US20110036409A1 - Filter, cooling injection member, and cooling wind injection method - Google Patents
Filter, cooling injection member, and cooling wind injection method Download PDFInfo
- Publication number
- US20110036409A1 US20110036409A1 US12/736,655 US73665508A US2011036409A1 US 20110036409 A1 US20110036409 A1 US 20110036409A1 US 73665508 A US73665508 A US 73665508A US 2011036409 A1 US2011036409 A1 US 2011036409A1
- Authority
- US
- United States
- Prior art keywords
- wind
- cooling
- area
- injection port
- injection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/0318—Processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/794—With means for separating solid material from the fluid
Definitions
- the present invention relates to a technique for preventing an injection port that injects gas from becoming clogged.
- a cooling system for an electronic device such as a projector that uses a cooling pump can have a compact structure and inject cooling wind at a very high speed in comparison with such a cooling system that uses a cooling fan.
- the increase of the wind speed of the cooling wind can be accomplished by injecting from a very small injection port cooling wind that is delivered at low flow amount but at a high pressure from the cooling pump.
- the cooling system is provided with filter M (one of various types) that prevents clogging from taking place, and cooling wind from which dust has been collected by filter M is delivered to injection port N as shown in FIG. 1 .
- mesh-shaped filter M is used as a clog-prevention filter.
- a porous metallic filter and a foam filter are used.
- the cooling system can remove dust that is greater than the caliber of the injection port.
- An object of the present invention is to provide a technique that can effectively prevent the injection port from becoming clogged.
- a filter of the present invention is a filter disposed between a wind blower and an injection port that injects cooling wind delivered from said wind blower and in which a plurality of opening portions are formed, wherein an area of said filter is greater than an area of said injection port, an area of each of said plurality of opening portions is smaller than the area of said injection port, and a total area of said plurality of opening portions is 1 to 5 times greater than the area of said injection port.
- a cooling injection member of the present invention is a cooling injection member, comprising: a filter in which a plurality of opening portions are formed and that allows cooling wind delivered from a wind blower to pass through; and an injection port that injects said cooling wind that has passed through said filter, wherein an area of said filter is greater than an area of said injection port, an area of each of said plurality of opening portions is smaller than the area of said injection port, and a total area of said plurality of opening portions is 1 to 5 times greater than the area of said injection port.
- a cooling wind injection method of the present invention is a cooling wind injection method, comprising: providing a wind blower and a filter disposed between said wind blower and an injection port that injects cooling wind delivered from said wind blower and in which a plurality of opening portions are formed; causing an area of said filter to be greater than an area of said injection port; causing an area of each of said plurality of opening portions to be smaller than the area of said injection opening; and causing a total area of each of said plurality of opening portions to be 1 to 5 times greater than the area of said injection port.
- FIG. 1 is a perspective view showing the structure of a conventional injection member.
- FIG. 2 is a front view of a filter disclosed in Document 1.
- FIG. 3 is an overall view showing the structure of a cooling system of a first embodiment.
- FIG. 4 is an overall view showing the structure of a lamp unit and an injection member of the first embodiment.
- FIG. 5 is a perspective view showing the structure of the injection member of the first embodiment.
- FIG. 6 is a sectional view of the injection member of the first embodiment
- FIG. 7 is a front view of the injection member of the first embodiment.
- FIG. 8 is a table that compares characteristics of a metal filter of the first embodiment and characteristics of the filter of Document 1.
- FIG. 9 is a view showing the flow of cooling wind in the vicinity of punched holes of the first embodiment.
- FIG. 10 is a view showing the flow of cooling wind in the vicinity of punched holes of the filter of Document 1.
- FIG. 11 is a view showing a metal filter of the first embodiment, on which fine grains have been deposited.
- FIG. 12 is a perspective view showing the structure of an injection member of a second embodiment.
- FIG. 13 is a view describing a method that fixes a metal filter of the second embodiment.
- FIG. 14 is a view showing the metal filter of the second embodiment, on which fine grains have been deposited.
- FIG. 15 is a perspective view showing the structure of an injection member of a third embodiment.
- FIG. 16 is a front view of a masking plate of the third embodiment.
- FIG. 17 is a view showing the masking plate of the third embodiment, on which fine grains have been deposited.
- FIG. 3 is an overall view showing the structure of cooling system 1 of the first embodiment.
- Cooling system 1 is a system that cools an electronic device such as a projector and is incorporated therein for use. Referring to the same drawing, cooling system 1 has wind blower 10 , silicon tube 20 , and injection member 30 . In addition, cooling system 1 is mounted on lamp unit 40 .
- Wind blower 10 is, for example, a diaphragm type pump and delivers gas as cooling wind, that cools lamp unit 40 , to injection member 30 through silicon tube 20 .
- Silicon tube 20 is a tube that is made of silicon and that connects wind blower 10 and injection member 30 .
- FIG. 4 is an enlarged view of injection member 30 and lamp unit 40 .
- injection member 30 cools lamp unit 40 by injecting cooling wind delivered from wind blower 10 to lamp unit 40 .
- Lamp unit 40 is used as a light source for an electronic device and is a part that cooling system 1 cools as a cooling target.
- cooling system 1 can cool as a cooling target a member other than lamp unit 40 in the electronic device.
- FIG. 5 is a perspective view showing the structure of injection member 30 .
- injection member 30 has main body 301 , injection port 302 , spacer 303 , metal filter 304 , retaining ring 305 , and foam filter 306 .
- the arrow in the drawing represents the direction in which cooling wind is delivered.
- Main body 301 is a cylindrical member that passes through cooling wind delivered from wind blower 10 and has injection port 302 at its side position, injection port 302 having a caliber (for example, ⁇ 0.5 mm) that is smaller than the inner diameter of the cylinder (for example, ⁇ 6 mm).
- the caliber of injection port 302 is smaller than the inner diameter of the cylinder of main body 301 because cooling wind is injected from injection port 302 at a high speed equal to or greater than a predetermined value (for example, 130 m/s) using a high wind pressure (for example, 20 kPa).
- Injection port 302 injects cooling wind delivered by wind blower 10 at a wind speed equal to or greater than a predetermined value.
- the caliber of injection port 302 When the caliber of injection port 302 is smaller than the inner diameter of main body 301 and the wind speed of the cooling wind injected from injection port 302 can be maintained at equal to or greater than a predetermined value, the inner diameter of the cylinder of main body 301 , the wind pressure of cooling wind delivered by wind blower 10 , and the value of the caliber of injection port 302 can be freely changed.
- Spacer 303 and retaining ring 305 are ring-shaped parts that fix metal filter 304 inside main body 301 .
- Metal filter 304 is a disc-shaped part that collects fine grains that the cooling wind, that is delivered from wind blower 10 , contains.
- Foam filter 306 is a porous part that collects dust.
- Metal filter 304 may be made of another material such as plastics as well as a metal.
- FIG. 6 is a lateral sectional view of main body 301 that has accommodated spacers and so forth ( 303 , 304 , 305 , and 306 ). Referring to the drawing, fine grains that cooling wind contains and that is delivered from wind blower 10 are first collected by foam filter 306 and then by metal filter 304 and then the cooling wind from which dust has been collected is injected from injection port 302 .
- FIG. 7 is a front view of metal filter 304 .
- a plurality of punched holes 3041 have been formed in metal filter 304 .
- the area of metal filter 304 is nearly equal to the inner diameter of main body 301 that is greater than injection port 302 .
- the area of each of punched holes 3041 is required to be smaller than the area of injection port 302 so as to collect fine grains smaller than injection port 302 .
- the total area of punched holes 3041 is required to be 1 to 5 times greater than the area of injection port 302 .
- the reason why the total area is required to be equal to or greater than 1 time is in that if the ratio is smaller than 1, the pressure loss caused by metal filter 30 becomes excessively large.
- the reason why the total area is required to be 5 times or smaller is in that if the ratio is greater than 5, the wind speed of cooling wind that passes through punched holes 3041 does not become a predetermined value (for example, 26 m/s).
- FIG. 8 is a table that compares the structure of filter 304 of this embodiment and the characteristics of the mesh-shaped filter disclosed in Document 1.
- injection port is injection port 302
- meshes of conventional product is filter M described in Document 1 or FIG. 2
- Example 1 and “Example 2” are examples of metal filter 304 .
- Ring of diameters is the ratio of the diameter of holes formed in the filter to the diameter of injection port 302 .
- Opening magnification is the ratio of the total area of the holes formed in the filter to the area of injection port 302 .
- Numberer of holes is the number of holes formed in the filter.
- “Ratio of circumferential lengths” is the ratio of the total circumference of the holes formed in the filter to the circumference of injection port 302 . “Ratio of output flow speeds” is the ratio of the wind speed of cooling wind injected from the holes formed in the filter to the wind speed of cooling wind injected from injection port 302 .
- the area of each of punched holes 3041 is around 30% of the area of injection port 302 (ratio of diameters 0.3) and the total number of punched holes 3041 is 33.
- the wind speed of cooling wind that passes through punched holes 3041 is around equal to or greater than 52 m/s when the wind speed of the injection port is equal to or greater than 130 m/s.
- metal filter 30 can suppress the pressure loss to be equal to or lower than a predetermined level and obtain a wind speed that is equal to or greater than a predetermined value (26 m/s).
- each of punched holes 3041 is around 30% of the area of injection port 302 and the total number of punched holes 3041 is 62.
- metal filter 30 can suppress the pressure loss to be equal to or lower than a predetermined level and obtain a wind speed that is equal to or greater than a predetermined value (26 m/s).
- the drawing shows the flow of cooling wind in the vicinity of punched holes 3041 in the case in which the wind speed of gas that passes through punched holes 3041 is 20% of the wind speed of gas that passes through injection port 302 (130 m/s), namely equal to or greater than 26 m/s.
- the path of the arrow represents the path of the flow of cooling wind; the length of the arrow represents the magnitude of the flow speed of gas.
- FIG. 11 is a front view of metal filter 304 , viewed from the injection side of cooling wind when cooling system 1 has been operated for a predetermined time period. Referring to the drawing, since gas passed through punched holes 3041 at a wind speed equal to or greater than a predetermined value, fine grains in gas have been deposited in the vicinity of punched holes 3041 .
- Fine grains that foam filter 306 and metal filter 304 have not fully collected get deposited in the vicinity of injection port 302 . This is because the wind speed of gas injected from injection port 302 is satisfactorily large, for example, equal to or greater than 130 m/s and the pressure difference between the center portions of the holes and the vicinity thereof becomes large as with the case shown in FIG. 9 .
- injection port 302 When the amount of fine grains that have been deposited on injection port 302 becomes equal to or greater than a predetermined amount, injection port 302 becomes clogged.
- the time period for which clogging takes place depends on the circumferential length of the holes through which gas passes at a wind speed that is equal to or greater than a predetermined value. Since fine grains get deposited in the vicinity of punched holes 3041 as well as on injection port 302 , the time period for which the clogging takes place in the case in which metal filter 304 is provided is greater by the total of the circumferential lengths of punched holes 3041 than that in the case in which metal filter 304 is not provided.
- metal filter 304 is disposed between wind blower 10 and injection port 302 that injects cooling wind delivered from wind blower 10 and in which a plurality of punched holes 3041 are formed; the area of metal filter 304 is greater than the area of injection port 302 , the area of each of the plurality of punched holes 3041 is smaller than the area of injection port 302 , and the total area of the plurality of punched holes 3041 is 1 to 5 times greater than the area of injection port 302 .
- injection member 30 a is provided with a plurality of filters that are similar to metal filters 304 .
- FIG. 12 is a perspective view showing the structure of injection member 30 a of this embodiment.
- injection member 30 a has a structure similar to that of injection member 30 of the first embodiment except that injection member 30 a further has spacer 303 a and metal filter 304 a.
- Main body 301 of injection member 30 a accommodates these parts in the order of spacer 303 , metal filter 304 , spacer 303 a, metal filter 304 a, retaining ring 305 , and foam filter 306 .
- spacer 303 a and metal filter 304 a are similar to that of spacer 303 and metal filter 304 .
- metal filters 304 and 304 a are fixed to injection member 30 a in such a manner that the wind path of cooling wind that passes through punched holes 3041 is different from the wind path of cooling wind that passes through punched holes 3041 a formed in metal filter 304 a except for a center hole.
- the arrow of the drawing represents the direction in which cooling wind is delivered.
- metal filters 304 and 304 a are fixed in such a manner, cooling wind that has passed through punched holes 3041 a collides with a non-hole surface of metal filter 304 .
- fine grains get deposited at a portion with which cooling wind, that has passed through punched holes 3041 a, collides.
- injection member 30 a since injection member 30 a has a plurality of metal filters 304 , 304 a, it can securely remove fine grains.
- metal filters 304 , 304 a are fixed in such a manner that the path of wind that passes through punched holes 3041 a is different from the path of wind that passes through punched holes 3041 , cooling wind that has passed through punched holes 3041 a collides with a surface other than punched holes 3041 of metal filter 304 and fine grains that have not been deposited in the vicinity of punched holes 3041 a get deposited at the collided portion.
- three or more filters that are similar to metal filters 304 may be provided in injection member 30 a.
- the third embodiment is different from the first embodiment in that injection member 30 b is also provided with masking plate 307 .
- FIG. 15 is a perspective view showing the structure of injection member 30 b of this embodiment.
- injection member 30 b has a structure similar to that of injection member 30 of the first embodiment except that injection member 30 b also has masking plate 307 and spacer 303 b.
- Main body 301 of injection member 30 b accommodates these parts in the order of spacer 303 b, masking plate 307 , spacer 303 , metal filter 304 , retaining ring 305 , and foam filter 306 .
- FIG. 16 is a front view of masking plate 307 .
- masking plate 307 is a disc-shaped member whose outer circumferential portion has a plurality of notches 3071 . Cooling wind that has passed through punched holes 3041 collides with a surface of masking plate 307 , passes through notches 3071 , and is injected from injection port 302 . Thus, as shown in FIG. 17 , fine grains get deposited at a portion of masking plate 307 with which cooling wind, that has passed through punched holes 3041 , collides.
- Parts that allow fine grains to get deposited are not limited to metal filter 304 and masking plate 307 exemplified in the above-described second embodiment and third embodiment, but may be parts in any shape provided between an injection port and a filter and that have a wall surface with which cooling wind, that has passed through the filter of the present invention, collides.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Projection Apparatus (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Separating Particles In Gases By Inertia (AREA)
Abstract
Filter (304) disposed between a wind blower and injection port (302) that injects cooling wind delivered from said wind blower and in which a plurality of opening portions are formed, wherein an area of said filter (304) is greater than an area of said injection port (302), an area of each of said plurality of opening portions is smaller than the area of said injection port (302), and a total area of said plurality of opening portions is 1 to 5 times greater than the area of said injection port (302).
Description
- The present invention relates to a technique for preventing an injection port that injects gas from becoming clogged.
- A cooling system for an electronic device such as a projector that uses a cooling pump can have a compact structure and inject cooling wind at a very high speed in comparison with such a cooling system that uses a cooling fan. The increase of the wind speed of the cooling wind can be accomplished by injecting from a very small injection port cooling wind that is delivered at low flow amount but at a high pressure from the cooling pump.
- Since the injection port of the cooling system is very small, the injection port may become clogged with fine dust. Thus, the cooling system is provided with filter M (one of various types) that prevents clogging from taking place, and cooling wind from which dust has been collected by filter M is delivered to injection port N as shown in
FIG. 1 . - As exemplified in JP60-125221A (hereinafter referred to as Document 1) and in
FIG. 2 , mesh-shaped filter M is used as a clog-prevention filter. In addition, as disclosed in JP2002-119810A (hereinafter referred to as Document 2), a porous metallic filter and a foam filter are used. - Since the diameter of each hole of these filters, for example, hole H shown in
FIG. 2 is smaller than the caliber of injection port N, the cooling system can remove dust that is greater than the caliber of the injection port. - However, fine dust smaller than the caliber of the injection port may pass through the holes of the filter described in
Document 1 orDocument 2. Thus, even with these filters, it is difficult to prevent the injection port from becoming clogged with fine dust that has been deposited in the injection port. - If the holes of the filter were excessively narrowed to enhance the clog-prevention effect, the filter would cause the pressure loss to increase, resulting in lowering the energy efficiency.
- Thus, there was a problem in which the filter described in
Document 1 orDocument 2 could not satisfactorily prevent the injection port from becoming clogged with fine dust that had deposited therein. - An object of the present invention is to provide a technique that can effectively prevent the injection port from becoming clogged.
- To accomplish the foregoing object, a filter of the present invention is a filter disposed between a wind blower and an injection port that injects cooling wind delivered from said wind blower and in which a plurality of opening portions are formed, wherein an area of said filter is greater than an area of said injection port, an area of each of said plurality of opening portions is smaller than the area of said injection port, and a total area of said plurality of opening portions is 1 to 5 times greater than the area of said injection port.
- A cooling injection member of the present invention is a cooling injection member, comprising: a filter in which a plurality of opening portions are formed and that allows cooling wind delivered from a wind blower to pass through; and an injection port that injects said cooling wind that has passed through said filter, wherein an area of said filter is greater than an area of said injection port, an area of each of said plurality of opening portions is smaller than the area of said injection port, and a total area of said plurality of opening portions is 1 to 5 times greater than the area of said injection port.
- A cooling wind injection method of the present invention is a cooling wind injection method, comprising: providing a wind blower and a filter disposed between said wind blower and an injection port that injects cooling wind delivered from said wind blower and in which a plurality of opening portions are formed; causing an area of said filter to be greater than an area of said injection port; causing an area of each of said plurality of opening portions to be smaller than the area of said injection opening; and causing a total area of each of said plurality of opening portions to be 1 to 5 times greater than the area of said injection port.
- [
FIG. 1 ] is a perspective view showing the structure of a conventional injection member. - [
FIG. 2 ] is a front view of a filter disclosed inDocument 1. - [
FIG. 3 ] is an overall view showing the structure of a cooling system of a first embodiment. - [
FIG. 4 ] is an overall view showing the structure of a lamp unit and an injection member of the first embodiment. - [
FIG. 5 ] is a perspective view showing the structure of the injection member of the first embodiment. - [
FIG. 6 ] is a sectional view of the injection member of the first embodiment - [
FIG. 7 ] is a front view of the injection member of the first embodiment. - [
FIG. 8 ] is a table that compares characteristics of a metal filter of the first embodiment and characteristics of the filter ofDocument 1. - [
FIG. 9 ] is a view showing the flow of cooling wind in the vicinity of punched holes of the first embodiment. - [
FIG. 10 ] is a view showing the flow of cooling wind in the vicinity of punched holes of the filter ofDocument 1. - [
FIG. 11 ] is a view showing a metal filter of the first embodiment, on which fine grains have been deposited. - [
FIG. 12 ] is a perspective view showing the structure of an injection member of a second embodiment. - [
FIG. 13 ] is a view describing a method that fixes a metal filter of the second embodiment. - [
FIG. 14 ] is a view showing the metal filter of the second embodiment, on which fine grains have been deposited. - [
FIG. 15 ] is a perspective view showing the structure of an injection member of a third embodiment. - [
FIG. 16 ] is a front view of a masking plate of the third embodiment. - [
FIG. 17 ] is a view showing the masking plate of the third embodiment, on which fine grains have been deposited. - Next, with reference to drawings, embodiments of the present invention will be described in detail.
-
FIG. 3 is an overall view showing the structure ofcooling system 1 of the first embodiment.Cooling system 1 is a system that cools an electronic device such as a projector and is incorporated therein for use. Referring to the same drawing,cooling system 1 haswind blower 10,silicon tube 20, andinjection member 30. In addition,cooling system 1 is mounted onlamp unit 40. -
Wind blower 10 is, for example, a diaphragm type pump and delivers gas as cooling wind, that coolslamp unit 40, toinjection member 30 throughsilicon tube 20. -
Silicon tube 20 is a tube that is made of silicon and that connectswind blower 10 andinjection member 30. -
FIG. 4 is an enlarged view ofinjection member 30 andlamp unit 40. Referring to the drawing,injection member 30cools lamp unit 40 by injecting cooling wind delivered fromwind blower 10 tolamp unit 40. -
Lamp unit 40 is used as a light source for an electronic device and is a part thatcooling system 1 cools as a cooling target. - Of course,
cooling system 1 can cool as a cooling target a member other thanlamp unit 40 in the electronic device. -
FIG. 5 is a perspective view showing the structure ofinjection member 30. Referring to the drawing,injection member 30 hasmain body 301,injection port 302,spacer 303,metal filter 304, retainingring 305, andfoam filter 306. The arrow in the drawing represents the direction in which cooling wind is delivered. -
Main body 301 is a cylindrical member that passes through cooling wind delivered fromwind blower 10 and hasinjection port 302 at its side position,injection port 302 having a caliber (for example, φ0.5 mm) that is smaller than the inner diameter of the cylinder (for example, φ6 mm). The caliber ofinjection port 302 is smaller than the inner diameter of the cylinder ofmain body 301 because cooling wind is injected frominjection port 302 at a high speed equal to or greater than a predetermined value (for example, 130 m/s) using a high wind pressure (for example, 20 kPa).Injection port 302 injects cooling wind delivered bywind blower 10 at a wind speed equal to or greater than a predetermined value. - When the caliber of
injection port 302 is smaller than the inner diameter ofmain body 301 and the wind speed of the cooling wind injected frominjection port 302 can be maintained at equal to or greater than a predetermined value, the inner diameter of the cylinder ofmain body 301, the wind pressure of cooling wind delivered bywind blower 10, and the value of the caliber ofinjection port 302 can be freely changed. -
Spacer 303 and retainingring 305 are ring-shaped parts that fixmetal filter 304 insidemain body 301.Metal filter 304 is a disc-shaped part that collects fine grains that the cooling wind, that is delivered fromwind blower 10, contains.Foam filter 306 is a porous part that collects dust. -
Metal filter 304 may be made of another material such as plastics as well as a metal. -
Main body 301 ofinjection member 30 accommodates these parts in the order ofspacer 303,metal filter 304, retainingring 305, andfoam filter 306.FIG. 6 is a lateral sectional view ofmain body 301 that has accommodated spacers and so forth (303, 304, 305, and 306). Referring to the drawing, fine grains that cooling wind contains and that is delivered fromwind blower 10 are first collected byfoam filter 306 and then bymetal filter 304 and then the cooling wind from which dust has been collected is injected frominjection port 302. -
FIG. 7 is a front view ofmetal filter 304. Referring to the drawing, a plurality of punchedholes 3041 have been formed inmetal filter 304. The area ofmetal filter 304 is nearly equal to the inner diameter ofmain body 301 that is greater thaninjection port 302. The area of each of punchedholes 3041 is required to be smaller than the area ofinjection port 302 so as to collect fine grains smaller thaninjection port 302. - The total area of punched
holes 3041 is required to be 1 to 5 times greater than the area ofinjection port 302. The reason why the total area is required to be equal to or greater than 1 time is in that if the ratio is smaller than 1, the pressure loss caused bymetal filter 30 becomes excessively large. The reason why the total area is required to be 5 times or smaller is in that if the ratio is greater than 5, the wind speed of cooling wind that passes through punchedholes 3041 does not become a predetermined value (for example, 26 m/s). -
FIG. 8 is a table that compares the structure offilter 304 of this embodiment and the characteristics of the mesh-shaped filter disclosed inDocument 1. In this drawing, “injection port” isinjection port 302; “meshes of conventional product” is filter M described inDocument 1 orFIG. 2 ; “Example 1” and “Example 2” are examples ofmetal filter 304. “Ratio of diameters” is the ratio of the diameter of holes formed in the filter to the diameter ofinjection port 302. “Opening magnification” is the ratio of the total area of the holes formed in the filter to the area ofinjection port 302. “Number of holes” is the number of holes formed in the filter. “Ratio of circumferential lengths” is the ratio of the total circumference of the holes formed in the filter to the circumference ofinjection port 302. “Ratio of output flow speeds” is the ratio of the wind speed of cooling wind injected from the holes formed in the filter to the wind speed of cooling wind injected frominjection port 302. - In “Example 1”, the area of each of punched
holes 3041 is around 30% of the area of injection port 302 (ratio of diameters 0.3) and the total number of punchedholes 3041 is 33. In this structure, since the total area of punchedholes 3041 is around 2.7 times greater than the area of injection port 302 (opening magnification 2.7) and the ratio of output flow speeds is around 0.4, the wind speed of cooling wind that passes through punchedholes 3041 is around equal to or greater than 52 m/s when the wind speed of the injection port is equal to or greater than 130 m/s. Thus,metal filter 30 can suppress the pressure loss to be equal to or lower than a predetermined level and obtain a wind speed that is equal to or greater than a predetermined value (26 m/s). - In contrast, in “Example 2”, the area of each of punched
holes 3041 is around 30% of the area ofinjection port 302 and the total number of punchedholes 3041 is 62. In this structure, since the opening magnification is around 5.0 and the ratio of the output flow speeds is around 0.2,metal filter 30 can suppress the pressure loss to be equal to or lower than a predetermined level and obtain a wind speed that is equal to or greater than a predetermined value (26 m/s). - When the area of each of punched
holes 3041 is smaller thaninjection port 302 and the total area of punchedholes 3041 is 1 to 5 times greater than the area ofinjection port 302, the size, the shape, or the number of holes of punchedholes 3041 can be freely changed. - Next, the benefit obtained with a sufficient wind speed will be described with reference to
FIG. 9 . The drawing shows the flow of cooling wind in the vicinity of punchedholes 3041 in the case in which the wind speed of gas that passes through punchedholes 3041 is 20% of the wind speed of gas that passes through injection port 302 (130 m/s), namely equal to or greater than 26 m/s. In the drawing, the path of the arrow represents the path of the flow of cooling wind; the length of the arrow represents the magnitude of the flow speed of gas. Referring to the drawing, when the flow speed of cooling wind that passes through the center portions of punchedholes 3041 is equal to or greater than a predetermined value, the flow of cooling wind that passes through punchedholes 3041 becomes faster than the flow of cooling wind that passes through the vicinity thereof and the pressure difference between the vicinity at which the flow is slow and the hole portion at which the flow is fast becomes large according to the Bernoulli principle, resulting in the flow of gas injected in a sharp curve from the vicinity of punchedholes 3041 to punchedholes 3041. When fine grains are injected along the path of the flow into punchedholes 3041, fine grains touch and adhesively deposit on the surface of the vicinity of each of punchedholes 3041. - In contrast, when the total area of punched
holes 3041 is greater than 5 times of the area ofinjection port 302, for example, in “meshes of conventional product” shown inFIG. 8 , the opening magnification becomes 64.8, the ratio of output flow speeds becomes 0.0, and the wind speed becomes lower than 26 m/s. In this case, as shown inFIG. 10 , since there is less difference between the speed of wind that passes through the holes and the speed of wind that passes through the vicinity thereof and since the pressure difference between the holes and the vicinity thereof is small, the curve of the flow of gas injected from the vicinity to the holes is gradual. Thus, since fine grains in gas pass through the holes without being deposited in the vicinity thereof, the filter cannot effectively collect them. -
FIG. 11 is a front view ofmetal filter 304, viewed from the injection side of cooling wind when coolingsystem 1 has been operated for a predetermined time period. Referring to the drawing, since gas passed through punchedholes 3041 at a wind speed equal to or greater than a predetermined value, fine grains in gas have been deposited in the vicinity of punchedholes 3041. - Fine grains that foam
filter 306 andmetal filter 304 have not fully collected get deposited in the vicinity ofinjection port 302. This is because the wind speed of gas injected frominjection port 302 is satisfactorily large, for example, equal to or greater than 130 m/s and the pressure difference between the center portions of the holes and the vicinity thereof becomes large as with the case shown inFIG. 9 . - When the amount of fine grains that have been deposited on
injection port 302 becomes equal to or greater than a predetermined amount,injection port 302 becomes clogged. The time period for which clogging takes place depends on the circumferential length of the holes through which gas passes at a wind speed that is equal to or greater than a predetermined value. Since fine grains get deposited in the vicinity of punchedholes 3041 as well as oninjection port 302, the time period for which the clogging takes place in the case in whichmetal filter 304 is provided is greater by the total of the circumferential lengths of punchedholes 3041 than that in the case in whichmetal filter 304 is not provided. - For example, as shown in “Example 1” of
FIG. 8 , when 33 punchedholes 3041 having an area 0.3 times greater than that ofinjection port 302 are provided, the total of the circumferential lengths of punchedholes 3041 becomes 9.4 times greater than the circumferential length ofinjection port 302, allowing the time period for which clogging takes place to become equal to or greater than 10 times. - As described above, according to this embodiment,
metal filter 304 is disposed betweenwind blower 10 andinjection port 302 that injects cooling wind delivered fromwind blower 10 and in which a plurality of punchedholes 3041 are formed; the area ofmetal filter 304 is greater than the area ofinjection port 302, the area of each of the plurality of punchedholes 3041 is smaller than the area ofinjection port 302, and the total area of the plurality of punchedholes 3041 is 1 to 5 times greater than the area ofinjection port 302. Thus, fine grains smaller thaninjection port 302 can be collected and while the pressure loss can be suppressed to be equal to or smaller than a predetermined value, the wind speed of cooling wind that passes through punchedholes 3041 can be increased to be equal to or greater than a predetermined value. As a result, since fine grains get deposited in the vicinity of punchedholes 3041,cooling system 1 can effectively preventinjection port 302 from becoming clogged. - Next, a second embodiment of the present invention will be described with reference to
FIG. 12 toFIG. 14 . The second embodiment is different from the first embodiment in thatinjection member 30 a is provided with a plurality of filters that are similar to metal filters 304. -
FIG. 12 is a perspective view showing the structure ofinjection member 30 a of this embodiment. Referring to this drawing,injection member 30 a has a structure similar to that ofinjection member 30 of the first embodiment except thatinjection member 30 a further has spacer 303 a andmetal filter 304 a.Main body 301 ofinjection member 30 a accommodates these parts in the order ofspacer 303,metal filter 304, spacer 303 a,metal filter 304 a, retainingring 305, andfoam filter 306. - The structure of
spacer 303 a andmetal filter 304 a is similar to that ofspacer 303 andmetal filter 304. However, as shown inFIG. 13 ,metal filters injection member 30 a in such a manner that the wind path of cooling wind that passes through punchedholes 3041 is different from the wind path of cooling wind that passes through punchedholes 3041 a formed inmetal filter 304 a except for a center hole. The arrow of the drawing represents the direction in which cooling wind is delivered. When metal filters 304 and 304 a are fixed in such a manner, cooling wind that has passed through punchedholes 3041 a collides with a non-hole surface ofmetal filter 304. Thus, as shown inFIG. 14 , fine grains get deposited at a portion with which cooling wind, that has passed through punchedholes 3041 a, collides. - As described above, according to this embodiment, since
injection member 30 a has a plurality ofmetal filters - In addition, since metal filters 304, 304 a are fixed in such a manner that the path of wind that passes through punched
holes 3041 a is different from the path of wind that passes through punchedholes 3041, cooling wind that has passed through punchedholes 3041 a collides with a surface other than punchedholes 3041 ofmetal filter 304 and fine grains that have not been deposited in the vicinity of punchedholes 3041 a get deposited at the collided portion. - Alternately, of course, three or more filters that are similar to
metal filters 304 may be provided ininjection member 30 a. - Next, with reference to
FIG. 15 toFIG. 17 , a third embodiment of the present invention will be described. The third embodiment is different from the first embodiment in thatinjection member 30 b is also provided with maskingplate 307. -
FIG. 15 is a perspective view showing the structure ofinjection member 30 b of this embodiment. Referring to the drawing,injection member 30 b has a structure similar to that ofinjection member 30 of the first embodiment except thatinjection member 30 b also has maskingplate 307 andspacer 303 b.Main body 301 ofinjection member 30 b accommodates these parts in the order ofspacer 303 b, maskingplate 307,spacer 303,metal filter 304, retainingring 305, andfoam filter 306. -
Spacer 303 b is similar tospacer 303.FIG. 16 is a front view of maskingplate 307. Referring to the drawing, maskingplate 307 is a disc-shaped member whose outer circumferential portion has a plurality ofnotches 3071. Cooling wind that has passed through punchedholes 3041 collides with a surface of maskingplate 307, passes throughnotches 3071, and is injected frominjection port 302. Thus, as shown inFIG. 17 , fine grains get deposited at a portion of maskingplate 307 with which cooling wind, that has passed through punchedholes 3041, collides. - As described above, according to this embodiment, since cooling wind that has passed through punched
holes 3041 is masked by maskingplate 307 and fine grains that have not been deposited in the vicinity of punchedholes 3041 a get deposited on maskingplate 307, the dust collecting force ofinjection member 30 b improves. - Parts that allow fine grains to get deposited are not limited to
metal filter 304 and maskingplate 307 exemplified in the above-described second embodiment and third embodiment, but may be parts in any shape provided between an injection port and a filter and that have a wall surface with which cooling wind, that has passed through the filter of the present invention, collides. - Now, with reference to the embodiments, the present invention has been described. However, it should be understood by those skilled in the art that the structure and details of the present invention may be changed in various manners without departing from the scope of the present invention.
Claims (15)
1. A filter disposed between a wind blower and an injection port that injects cooling wind delivered from said wind blower and in which a plurality of opening portions are formed,
wherein an area of said filter is greater than an area of said injection port, an area of each of said plurality of opening portions is smaller than the area of said injection port, and a total area of said plurality of opening portions is 1 to 5 times greater than the area of said injection port.
2. A cooling injection member, comprising:
a filter in which a plurality of opening portions are formed and that allows cooling wind delivered from a wind blower to pass through; and
an injection port that injects said cooling wind that has passed through said filter,
wherein an area of said filter is greater than an area of said injection port, an area of each of said plurality of opening portions is smaller than the area of said injection port, and a total area of said plurality of opening portions is 1 to 5 times greater than the area of said injection port.
3. The cooling injection member according to claim 2 , further comprising:
a part having a wall surface with which cooling wind that passes through said opening portions collides, said part being disposed between said filter and said injection port.
4. The cooling injection member according to claim 2 , further comprising:
a masking plate, on whose outer circumference notch portions are formed and that masks a wind path of said cooling wind that passes through said opening portions.
5. The cooling injection member according to claim 2 , further comprising:
a plurality of said filters.
6. The cooling injection member according to claim 5 ,
wherein said plurality of filters are fixed to said cooling injection member in such a manner that a wind path of said cooling wind, that passes through said opening portions formed in one of said plurality of filters, is different from a wind path of said cooling wind that passes through said opening portions formed in another one of said plurality of filters.
7. A cooling wind injection method, comprising:
providing a wind blower and a filter disposed between said wind blower and an injection port that injects cooling wind delivered from said wind blower and in which a plurality of opening portions are formed;
causing an area of said filter to be greater than an area of said injection port;
causing an area of each of said plurality of opening portions to be smaller than the area of said injection opening; and
causing a total area of each of said plurality of opening portions to be 1 to 5 times greater than the area of said injection port.
8. The cooling wind injection method according to claim 7 , further comprising:
providing a part having a wall surface with which cooling wind that passes through said opening portions collides, said part being disposed between said filter and said injection port.
9. The cooling wind injection method according to claim 7 , further comprising:
providing a masking plate, on whose outer circumference notch portions are formed and that masks a wind path of said cooling wind that passes through said opening portions.
10. The cooling wind injection method according to claim 7 , further comprising:
providing a plurality of said filters.
11. The cooling wind injection method as set forth in claim 10 , further comprising:
wherein said plurality of filters are fixed to said cooling injection member in such a manner that a wind path of said cooling wind, that passes through said opening portions formed in one of said plurality of filters, is different from a wind path of said cooling wind that passes through said opening portions formed in another one of said plurality of filters.
12. The cooling injection member according to claim 3 , further comprising:
a plurality of said filters.
13. The cooling injection member according to claim 4 , further comprising:
a plurality of said filters.
14. The cooling wind injection method according to claim 8 , further comprising:
providing a plurality of said filters.
15. The cooling wind injection method according to claim 9 , further comprising:
providing a plurality of said filters.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2008/060036 WO2009144815A1 (en) | 2008-05-30 | 2008-05-30 | Filter, cooling jetting member and cooling wind jetting method |
Publications (1)
Publication Number | Publication Date |
---|---|
US20110036409A1 true US20110036409A1 (en) | 2011-02-17 |
Family
ID=41376714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/736,655 Abandoned US20110036409A1 (en) | 2008-05-30 | 2008-05-30 | Filter, cooling injection member, and cooling wind injection method |
Country Status (5)
Country | Link |
---|---|
US (1) | US20110036409A1 (en) |
EP (1) | EP2302991B1 (en) |
JP (1) | JP5130549B2 (en) |
CN (1) | CN102047775B (en) |
WO (1) | WO2009144815A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130220443A1 (en) * | 2012-02-22 | 2013-08-29 | The Board Of Trustees Of The University Of Illinois | Apparatus and method for flow control |
WO2019059456A1 (en) * | 2017-09-21 | 2019-03-28 | 주식회사 유니락 | Porous metal filter |
Citations (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3344923A (en) * | 1964-03-02 | 1967-10-03 | Pall Corp | Filter unit having filter elements in series and in reserve |
US3981326A (en) * | 1974-02-28 | 1976-09-21 | Mitco Corporation | Induction mixing nozzle |
US3982900A (en) * | 1974-06-17 | 1976-09-28 | Centro Sperimentale Metallurgico S.P.A. | Plate for fluid-bed reactors |
US4456504A (en) * | 1980-04-30 | 1984-06-26 | Chevron Research Company | Reactor vessel and process for thermally treating a granular solid |
JPS60125221A (en) * | 1983-12-10 | 1985-07-04 | Toyota Chuo Kenkyusho:Kk | Filter |
US4640322A (en) * | 1985-06-19 | 1987-02-03 | Cozzoli Machine Co. | Method and apparatus for filling a receptacle with a material |
US5836350A (en) * | 1995-08-04 | 1998-11-17 | Aisin Aw Co., Ltd. | Electromagnetic valve |
US6364489B1 (en) * | 1998-07-27 | 2002-04-02 | Canon Kabushiki Kaisha | Image projection apparatus |
US6623129B2 (en) * | 2001-03-27 | 2003-09-23 | Seiko Epson Corporation | Optical component and projector using the same |
US6955435B2 (en) * | 1999-09-10 | 2005-10-18 | Belliveau Richard S | Image projection lighting device |
US7052524B1 (en) * | 2004-05-06 | 2006-05-30 | Venezzio Jr Albert D | Fan mounted air purifier |
US20060139577A1 (en) * | 2004-12-24 | 2006-06-29 | Sanyo Electric Co., Ltd. | Rear projection display |
US20060227555A1 (en) * | 2005-04-06 | 2006-10-12 | Nec Viewtechnology, Ltd. | Lamp unit and projection display apparatus |
US20070182935A1 (en) * | 2006-02-07 | 2007-08-09 | Canon Kabushiki Kaisha | Projection-type image displaying apparatus |
US20070182934A1 (en) * | 2006-02-03 | 2007-08-09 | Toshiyuki Noda | Image projection apparatus |
US20070251613A1 (en) * | 2006-04-26 | 2007-11-01 | Tokyo Electron Limited | Heat treatment apparatus, heat treatment method, and recording medium storing computer program carrying out the same |
US20080090135A1 (en) * | 2006-04-11 | 2008-04-17 | Wu James X | Fluid Manager Including Electrical Contacts and a Battery Including the Same |
US7439660B2 (en) * | 2002-07-11 | 2008-10-21 | Koninklijke Philips Electronics, N.V. | Discharge lamp having cooling means |
US7537348B2 (en) * | 2004-09-27 | 2009-05-26 | Sanyo Electric Co., Ltd. | Projection type video display |
US20090290130A1 (en) * | 2006-10-03 | 2009-11-26 | Yoshifumi Nishimura | Light source lamp cooling apparatus and projection display apparatus |
US20120006198A1 (en) * | 2010-07-09 | 2012-01-12 | Aisin Seiki Kabushiki Kaisha | Air drier for air suspension of vehicle |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0329397A (en) * | 1989-06-26 | 1991-02-07 | Mitsubishi Electric Corp | Electronic device |
JPH11329922A (en) * | 1998-05-08 | 1999-11-30 | Dainippon Screen Mfg Co Ltd | Device and method for cooling substrate |
JP2002119810A (en) | 2000-10-13 | 2002-04-23 | New Japan Radio Co Ltd | Metallic air filter device and method for manufacturing metallic air filter |
CN1302544C (en) * | 2003-06-18 | 2007-02-28 | 中国科学院理化技术研究所 | Mini refrigeration system for computer chip heat radiating |
JP4462904B2 (en) * | 2003-11-19 | 2010-05-12 | Necディスプレイソリューションズ株式会社 | COOLING MECHANISM, ELECTRONIC DEVICE, PROJECTOR, AND COOLING METHOD IN CASE |
-
2008
- 2008-05-30 JP JP2010514307A patent/JP5130549B2/en not_active Expired - Fee Related
- 2008-05-30 CN CN200880129410.9A patent/CN102047775B/en not_active Expired - Fee Related
- 2008-05-30 WO PCT/JP2008/060036 patent/WO2009144815A1/en active Application Filing
- 2008-05-30 EP EP20080777047 patent/EP2302991B1/en not_active Not-in-force
- 2008-05-30 US US12/736,655 patent/US20110036409A1/en not_active Abandoned
Patent Citations (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3344923A (en) * | 1964-03-02 | 1967-10-03 | Pall Corp | Filter unit having filter elements in series and in reserve |
US3981326A (en) * | 1974-02-28 | 1976-09-21 | Mitco Corporation | Induction mixing nozzle |
US3982900A (en) * | 1974-06-17 | 1976-09-28 | Centro Sperimentale Metallurgico S.P.A. | Plate for fluid-bed reactors |
US4456504A (en) * | 1980-04-30 | 1984-06-26 | Chevron Research Company | Reactor vessel and process for thermally treating a granular solid |
JPS60125221A (en) * | 1983-12-10 | 1985-07-04 | Toyota Chuo Kenkyusho:Kk | Filter |
US4640322A (en) * | 1985-06-19 | 1987-02-03 | Cozzoli Machine Co. | Method and apparatus for filling a receptacle with a material |
US5836350A (en) * | 1995-08-04 | 1998-11-17 | Aisin Aw Co., Ltd. | Electromagnetic valve |
US6364489B1 (en) * | 1998-07-27 | 2002-04-02 | Canon Kabushiki Kaisha | Image projection apparatus |
US6955435B2 (en) * | 1999-09-10 | 2005-10-18 | Belliveau Richard S | Image projection lighting device |
US6623129B2 (en) * | 2001-03-27 | 2003-09-23 | Seiko Epson Corporation | Optical component and projector using the same |
US7439660B2 (en) * | 2002-07-11 | 2008-10-21 | Koninklijke Philips Electronics, N.V. | Discharge lamp having cooling means |
US7052524B1 (en) * | 2004-05-06 | 2006-05-30 | Venezzio Jr Albert D | Fan mounted air purifier |
US7537348B2 (en) * | 2004-09-27 | 2009-05-26 | Sanyo Electric Co., Ltd. | Projection type video display |
US20060139577A1 (en) * | 2004-12-24 | 2006-06-29 | Sanyo Electric Co., Ltd. | Rear projection display |
US20060227555A1 (en) * | 2005-04-06 | 2006-10-12 | Nec Viewtechnology, Ltd. | Lamp unit and projection display apparatus |
US20070182934A1 (en) * | 2006-02-03 | 2007-08-09 | Toshiyuki Noda | Image projection apparatus |
US20070182935A1 (en) * | 2006-02-07 | 2007-08-09 | Canon Kabushiki Kaisha | Projection-type image displaying apparatus |
US20080090135A1 (en) * | 2006-04-11 | 2008-04-17 | Wu James X | Fluid Manager Including Electrical Contacts and a Battery Including the Same |
US20070251613A1 (en) * | 2006-04-26 | 2007-11-01 | Tokyo Electron Limited | Heat treatment apparatus, heat treatment method, and recording medium storing computer program carrying out the same |
US20090290130A1 (en) * | 2006-10-03 | 2009-11-26 | Yoshifumi Nishimura | Light source lamp cooling apparatus and projection display apparatus |
US8403499B2 (en) * | 2006-10-03 | 2013-03-26 | Nec Display Solutions, Ltd. | Light source lamp cooling apparatus and projection display apparatus including detecting gas pressure to control light source |
US20120006198A1 (en) * | 2010-07-09 | 2012-01-12 | Aisin Seiki Kabushiki Kaisha | Air drier for air suspension of vehicle |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130220443A1 (en) * | 2012-02-22 | 2013-08-29 | The Board Of Trustees Of The University Of Illinois | Apparatus and method for flow control |
WO2019059456A1 (en) * | 2017-09-21 | 2019-03-28 | 주식회사 유니락 | Porous metal filter |
Also Published As
Publication number | Publication date |
---|---|
EP2302991B1 (en) | 2012-08-01 |
JP5130549B2 (en) | 2013-01-30 |
WO2009144815A1 (en) | 2009-12-03 |
EP2302991A4 (en) | 2011-08-17 |
CN102047775B (en) | 2014-03-12 |
EP2302991A1 (en) | 2011-03-30 |
CN102047775A (en) | 2011-05-04 |
JPWO2009144815A1 (en) | 2011-09-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN1938502B (en) | Cooling device | |
US20090014234A1 (en) | Acoustic Panel | |
TW201239205A (en) | Ejector | |
WO2009032183A1 (en) | Vehicular exhaust resonator with cooling feature | |
JP2014173598A (en) | Muffler of exhaust gas turbocharger | |
US6701963B1 (en) | Flow conditioner | |
EP2913589A1 (en) | Acoustic damping device for chambers with grazing flow | |
KR100804142B1 (en) | Filter structure of distributed flow for efficiency improvement of the metal foam filter for vehicle | |
US7225504B2 (en) | Noise suppressor for use with vacuum air cleaner | |
US20110036409A1 (en) | Filter, cooling injection member, and cooling wind injection method | |
KR102007156B1 (en) | Apparatus for diffusion of aerosol particles using multi-stage fans | |
US10245539B2 (en) | Virtual impactor filter assembly and method | |
BRPI0604552A (en) | gas liquid capture device | |
JP2010075902A (en) | Bag type dust collector | |
US10583548B2 (en) | Silencing mechanism of pneumatic tool | |
KR20170036274A (en) | Canister apparatus of vehicle | |
KR20160052254A (en) | Jet nozzle for bagfilter cleaning | |
JP5794653B1 (en) | steam trap | |
US20160243479A1 (en) | High performance pre-cleaner and method | |
JP6079506B2 (en) | Air cleaner | |
CN205561356U (en) | Knockout and air conditioner | |
JP2018065140A (en) | Air amplification device for bag filter and air amplification system for bag filter with use of air amplification device for bag filter | |
KR20050033152A (en) | Air duct | |
CN110206730A (en) | Compressor apparatus and refrigeration system | |
CN213176205U (en) | Silencer for fan |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NEC DISPLAY SOLUTIONS, LTD., JAPAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TAKAMATSU, HIROAKI;REEL/FRAME:025226/0426 Effective date: 20101020 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |