US20060156508A1 - Vacuum cleaner with cyclonic separating dirt cup and dirt cup door - Google Patents
Vacuum cleaner with cyclonic separating dirt cup and dirt cup door Download PDFInfo
- Publication number
- US20060156508A1 US20060156508A1 US11/249,282 US24928205A US2006156508A1 US 20060156508 A1 US20060156508 A1 US 20060156508A1 US 24928205 A US24928205 A US 24928205A US 2006156508 A1 US2006156508 A1 US 2006156508A1
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- United States
- Prior art keywords
- dirt cup
- vacuum cleaner
- filter
- hand
- housing
- 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
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
- A47L9/165—Construction of inlets
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
- A47L5/24—Hand-supported suction cleaners
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L5/00—Structural features of suction cleaners
- A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
- A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
- A47L5/24—Hand-supported suction cleaners
- A47L5/26—Hand-supported suction cleaners with driven dust-loosening tools
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/12—Dry filters
- A47L9/127—Dry filters tube- or sleeve-shaped
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
- A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
- A47L9/1658—Construction of outlets
- A47L9/1666—Construction of outlets with filtering means
Abstract
The present invention relates to a vacuum cleaner. In one embodiment, a hand-held vacuum cleaner includes a housing having a first end and a second end, a suction nozzle located at the first end of the housing, and a suction fan and motor assembly located in the housing. A brushroll may be disposed within the suction nozzle. The hand-held vacuum cleaner further includes a dirt cup including an inlet, an outlet, a cyclonic flow chamber, a filter assembly, and a dirt cup door. The dirt cup is rotatably detachable from the housing. At least one nub cooperates with the at least one slot in the dirt cup to rotatably secure the dirt cup to the second end of the housing. In addition, the filter assembly includes at twist on filter cartridge.
Description
- This application is a continuation-in-part of application Ser. No. 29/221,441, filed on Jan. 14, 2005, and Ser. No. 29/221,442, filed on Jan. 14, 2005, and Ser. No. 29/237,958, filed on Sep. 8, 2005.
- The present invention relates to the field of vacuum cleaners. It finds particular application in conjunction with vacuum cleaners which employ cyclonic separation.
- Vacuum cleaners have become extremely popular for cleaning a variety of surfaces in homes, offices, cars or the like. One well known type of vacuum cleaner is a portable hand-held unit. Such units are utilized typically for small clean-up jobs or for cleaning in hard-to-reach places. These portable vacuum cleaner units are relatively light-weight and have a handle in order to enable a user to readily employ them in places where canister, upright, or shop-type vacuum cleaners cannot be used or are inconvenient to use.
- However, the above mentioned hand-held vacuum cleaners suffer a number of disadvantages. One disadvantage is that the filter elements are often small and tend to clog with debris relatively quickly. This disadvantage arises as a result of the compact nature of these hand-held vacuum cleaners. As the filter collects debris the air flow through the hand-held vacuum cleaner is reduced. Thus, the overall vacuum and pickup efficiency of the cleaner is reduced as well.
- Another disadvantage with prior hand-held vacuum cleaners is that they do not provide a convenient method of emptying the dirt which accumulates in the dirt cup of the cleaner. These units require the operator to shut-off the device and physically remove the dirt cup in order to empty the collected debris.
- Accordingly, it is desirable to develop a new and improved vacuum cleaner which would overcome the foregoing deficiencies and others while meeting the above stated needs and providing better and more advantageous results.
- According to one aspect of the present invention, a hand-held vacuum cleaner includes a housing having a first end and a second end, a suction nozzle located adjacent the first end of the housing, a suction fan and motor assembly located in the housing, and a dirt cup detachably mounted adjacent the second end of the housing. The dirt cup includes an inlet in fluid communication with the suction nozzle, an outlet in fluid communication with the suction fan and motor assembly, and a dirt cup door located on one end of the dirt cup.
- According to another aspect of the present invention, a vacuum cleaner includes a housing having at least one nub disposed about an outer circumference of the housing, a suction nozzle located adjacent a first end of the housing, a suction fan and motor assembly located in the housing, and a dirt cup including a first end and a second end. The dirt cup includes an inlet in fluid communication with the suction nozzle and an outlet in fluid communication with the suction fan and motor assembly. The dirt cup further includes at least one slot disposed about an inner circumference of the first end of the dirt cup, wherein the at least one nub of the housing cooperates with the at least one slot to rotatably secure the dirt cup to the housing. The vacuum cleaner further includes a filter assembly mounted to at least one of the dirt cup and the housing.
- According to yet another aspect of the present invention, a vacuum cleaner includes a housing having a first end and a second end, a suction nozzle located adjacent the first end of the housing, a suction fan and motor assembly located in the housing, a dirt cup rotatably mounted to the housing, and a filter support including a segmented flange. The segmented flange includes at least one notch and at least one detent adjacent to the at least one notch. The filter support plate is disposed upstream from said suction fan and motor assembly. The vacuum cleaner further includes a filter which includes at least one tab disposed on the filter. The at least one tab includes a ridge. The at least one tab and the ridge cooperate with the at least one notch and the at least one detent to rotatably mount the filter to the filter support.
- Other benefits and advantages of the invention will become apparent to those of average skill in the art upon a reading of the following detailed specification.
- The invention may take form in certain structures and components, several embodiments of which will be described in detail in this specification and illustrated in the accompanying drawings. In the drawings:
-
FIG. 1 is an assembled front perspective view of a first embodiment of a vacuum cleaner according to the present invention illustrating a hand-held cyclonic vacuum cleaner. -
FIG. 2 is an enlarged exploded front perspective view of the hand-held cyclonic vacuum cleaner ofFIG. 1 , showing a dirt cup being detached from a housing of the hand-held vacuum cleaner. -
FIG. 3 is an enlarged exploded rear perspective view of the hand-held cyclonic vacuum cleaner ofFIG. 1 , the detached dirt cup, is shown as including a dirt cup door. -
FIG. 4 is an enlarged exploded front perspective view of the dirt cup of the hand-held cyclonic vacuum cleaner ofFIG. 1 , showing a filter assembly removed from the dirt cup. -
FIG. 5 is an exploded perspective view from the front of the filter assembly ofFIG. 4 showing a filter cartridge removed from a filter support plate. -
FIG. 6 is an exploded perspective view from the rear of the filter assembly ofFIG. 4 showing the filter cartridge removed from the filter support plate. -
FIG. 7 is a side perspective view of the hand-held cyclonic vacuum cleaner ofFIG. 1 illustrating the dirt cup door of the dirt cup in an open position. -
FIG. 8 is an enlarged longitudinal vertical cross sectional view of the hand-held cyclonic vacuum cleaner ofFIG. 1 , illustrating the air flow path. -
FIG. 9 is an enlarged horizontal cross section as viewed from the top of the hand-held cyclonic vacuum cleaner ofFIG. 1 , illustrating the air flow path. -
FIG. 10 is a greatly enlarged view of the dirt cup and the filter assembly of the hand-held cyclonic vacuum cleaner shown inFIG. 8 . -
FIG. 11 is a vertical cross section of a second embodiment of a vacuum cleaner according to the present invention illustrating a stick type vacuum cleaner. -
FIG. 12 is a vertical cross section of a third embodiment of a vacuum cleaner according to the present invention illustrating an upright vacuum cleaner. - With reference to
FIG. 1 , a first embodiment of a hand-heldvacuum cleaner 100 is shown. The hand-heldvacuum cleaner 100 generally includes ahousing 110, asuction nozzle 112, ahandle 114, adirt cup 116 and a suction fan and motor assembly 118 (FIG. 8 ). As shown inFIG. 1 , thehousing 110 can be formed of two bilaterally symmetrical pieces, a left half portion and a right half portion. Of course, other housing constructions are also contemplated. As can be seen inFIG. 9 , the suction fan andmotor assembly 118 is disposed internally to thehousing 110. Thesuction nozzle 112 can be disposed adjacent afirst end 110 a of thehousing 110, whereas thedirt cup 116 can be disposed adjacent asecond end 110 b of thehousing 110. - Now with reference to
FIG. 2 , a perspective view of thefirst embodiment 100 of the hand-held vacuum cleaner is shown with thedirt cup 116 removed from thehousing 110. A plurality ofnubs 120 are disposed along thesecond end 110 b of thehousing 110. More particularly, the nubs are located circumferentially around a periphery of thehousing 110. Thenubs 120 cooperate with a plurality ofslots 122 defined in thedirt cup 116. As shown in bothFIGS. 2 and 4 , theslots 122 are disposed along an inner circumference of an opening 124 of thedirt cup 116. The shape of eachslot 122 may resemble an ‘L’. In the first embodiment, a first portion of theslot 122 is formed perpendicular to the opening 124, whereas a second portion of theslot 122 continues at about a 90° angle to the first portion and parallel to theopening 124. The second portion of theslot 122 includes a raisedridge 126 which functions as a frictional lock for thenub 120. As shown inFIG. 2 , thedirt cup 116 can be secured to thehousing 110 by first aligning thenubs 120 with the first portion of theslots 122 and advancing thedirt cup 116 towards thesecond end 110 b of thehousing 110 until the opening 124 abuts thehousing 110. Once thenubs 120 have seated fully into the first portion of theslots 122, thedirt cup 116 is rotated in a counterclockwise fashion (as viewed from the front of the hand-held vacuum cleaner 100). Thedirt cup 116 is rotated until each of thenubs 120 snap past its respective raisedridge 126. Also visible inFIG. 2 , is afilter assembly 128 that is disposed internally to thedirt cup 116. Thefilter assembly 128 slides into thedirt cup 116 and is held in place by a frictional fit between thefilter assembly 128 and an inner wall surface of thedirt cup 116. - With reference now to
FIG. 3 , a perspective view of the first embodiment of the hand-heldcyclonic vacuum cleaner 100 is shown (as inFIG. 2 ) but now from a rear view. As inFIG. 2 , thedirt cup 116 is shown to be removed from thehousing 110. More clearly visible inFIG. 3 are thenubs 120. In addition, asuction fan inlet 130 is shown. As best shown inFIG. 9 , a pair of suctionfan exhaust ports 131 can be defined in thehousing 110. Adirty air outlet 132 is located at an upper portion of thesecond end 110 b of thehousing 110. Generally speaking, the suction fan andmotor assembly 118 draws air through thesuction fan inlet 130 which in turn, draws air through thefilter assembly 128 and through thedirty air outlet 132. Thedirty air outlet 132 is in fluid communication with thesuction nozzle 112. - With reference now to
FIG. 7 , adirt cup door 134 is located at a rear portion of thedirt cup 116. Thedirt cup door 134 is attached to thedirt cup 116 via ahinge 136. Located at an upper portion of thedirt cup door 134 is acatch 138. Thecatch 138 is engaged by alatch 140 which firmly secures thedirt cup door 134 against thedirt cup 116. Thelatch 140, thecatch 138, and thehinge 136 are further depicted inFIG. 10 . By depressing thelatch 140, thecatch 138 on thedirt cup door 134 is released and thedirt cup door 134 will pivot downward about thehinge 136. A spring, not illustrated, can be employed for this purpose. In this manner, thedirt cup door 134 provides a convenient method of emptying thedirt cup 116 without requiring the removal of thedirt cup 116 from thehousing 110. - Now with reference to
FIG. 4 , thefilter assembly 128 disposed in thedirt cup 116 of the first embodiment of the hand-heldcyclonic vacuum cleaner 100 is shown. Thefilter assembly 128 generally includes afilter support plate 142 and afilter cartridge 144. Thefilter support plate 142 includes anouter sealing gasket 146, that is attached to the outer circumference of thefilter support plate 142, adirty air inlet 148, a cyclonicair flow deflector 150, and asegmented flange 151. - When the
filter assembly 128 is inserted into thedirt cup 116, the volumetric space between thefilter support plate 142 and thedirt cup door 134 defines a cyclonic flow chamber. It should be noted that the dirty air outlet 132 (FIG. 3 ) and the dirty air inlet 148 (FIG. 4 ) are rotated slightly about a Z-axis by an angular displacement α. This slight angular displacement permits thedirt cup 116 to rotate with respect to thehousing 110 without interference during attachment of thedirt cup 116. As the dirt cup is attached, thedirty air inlet 148 rotates into alignment with thedirty air outlet 132 such that the one contacts the other and a seal is formed when thedirt cup 116 is fully attached. In addition, a dirty air outlet sealing gasket is disposed about the circumference of the dirty air outlet 132 (FIG. 3 ) and is pinched between the interface of thedirty air outlet 132 and thedirty air inlet 148 when thedirt cup 116 is mounted to thehousing 110. - As illustrated in
FIGS. 4-6 , thefilter cartridge 144 is secured to thefilter support plate 142 via a frictional twist-on assembly. With particular reference toFIG. 5 , thefilter assembly 128 is shown in an exploded perspective view. Thesegmented flange 151 of thefilter support plate 142 and thefilter cartridge 144 are plainly visible. Thesegmented flange 151 can include anotch 151 a, adetent 151 b, and one ormore stops 151 c. Thefilter cartridge 144 includes afilter base 152, afilter medium 154 and afilter end cap 156. Thefilter base 152 includes acollar 152 a, a plurality oftabs 152 b, and ahandle 152 c. The plurality oftabs 152 b, include a raisedridge 152 d. Thecollar 152 a and thetabs 152 b are oriented such that they are received by thesegmented flange 151 of thefilter support plate 142. Specifically, eachtab 152 b slides past itsrespective notch 151 a in thesegmented flange 151. Then, thefilter cartridge 144 is rotated counterclockwise (as viewed from the front) causing theridge 152 d to slide over thesegmented flange 151 and into thedetent 151 b. Furthermore, as thefilter cartridge 144 is rotated, each of thetabs 152 b will eventually come to rest against a respective one of the plurality ofstops 151 c. As thetabs 152 b are rotated into position, thesegmented flange 151 deflects slightly such that a small amount of pressure is generated between thesegmented flange 151 and thetabs 152 b. Eventually, eachtab 152 b snaps into place when eachridge 152 d is aligned with itsrespective detent 151 b. This pressure, in combination with the seating of theridge 152 d into thedetent 151 b, holds thefilter cartridge 144 firmly in place with thefilter support plate 142. - The
handle 152 c may be used to grip thefilter cartridge 144 so as to facilitate the installation and removal of thefilter cartridge 144 without damaging thefilter medium 154. Thefilter medium 154 may be formed from a pleated filter material such as paper or a filter mesh material using fiberglass, nylon, plastic, or other various synthetic or organic materials. Assembly of thefilter cartridge 144 may be accomplished by adhering, molding, or crimping thefilter cap 156 to a first end of thefilter medium 154 and by similarly attaching the base 152 to a second end of thefilter medium 154. - Now with reference to
FIG. 6 , a rear exploded perspective view of thefilter assembly 128 is shown. Here, the rear portions of thefilter support plate 142 and thefilter cartridge 144 are clearly visible. With respect to thefilter support plate 142, the cyclonicair flow deflector 150 is shown as is aninner sealing gasket 158. With respect to thefilter cartridge 144, theend cap 156 and thefilter medium 154 are clearly visible, whereas thebase 152 is partially eclipsed. As thefilter cartridge 144 is mated with thefilter support plate 142, theinner sealing gasket 158 is compressed between thefilter support plate 142 and thebase 152 of thefilter cartridge 144 providing an airtight seal for reducing the possibility of unfiltered airflow across thefilter assembly 128. - Now with reference to
FIG. 7 , a side perspective view of the first embodiment of the hand-heldcyclonic vacuum cleaner 100 is shown.FIG. 7 clearly illustrates the operation of thedirt cup door 134. Here, thedirt cup door 134 is shown in an open position. With thedirt cup door 134 in the open position, thecatch 138 and thehinge 136, as well as thelatch 140, are clearly visible. In addition, a sealinggasket 160 is located about the outer perimeter of thedirt cup door 134. As described previously, when thelatch 140 is depressed, thecatch 138 is released and a spring biasing element that may be located within thehinge 136 urges thedirt cup door 134 open. At this stage, the user of the hand-heldvacuum cleaner 100 may hold the cleaner by itshandle 114 in a vertical orientation, such that any debris within thedirt cup 116 will simply drop out. Once the debris has been emptied, the user may close thedirt cup door 134 by lifting it and pressing it up against thelatch 140. - Now with reference to
FIG. 8 , a vertical cross section of the hand-heldvacuum cleaner 100 is shown. The section fan andmotor assembly 118, thefilter assembly 128, thefilter cartridge 144, and abrushroll 162 are shown. Thebrushroll 162 may be disposed internally to thehousing 110 and adjacent to thesuction nozzle 112. When the suction fan andmotor assembly 118 is operating, air begins to enter through thesuction nozzle 112, past therotating brushroll 162, through afluid channel 164 and out thedirty air outlet 132. As shown inFIG. 8 , thedirty air outlet 132 abuts thedirty air inlet 148 of thefilter support plate 142 when thedirt cup 116 is attached to thehousing 110. As airflow exits thedirty air outlet 132 it enters thedirty air inlet 148 and impinges against the cyclonicair flow deflector 150. The air flow then continues in a tangential direction with respect to thefilter cartridge 144 and spirals towards the rear portion of thedirt cup 116. Heavier than air particles are separated from the airflow due to the centrifugal forces generated by the cyclonic flow of the air. These particles accumulate in or near the bottom and rear portions of thedirt cup 116. As the airflow slows it moves towards the center of the cyclonic airflow chamber and is drawn through thefilter medium 154 toward thesuction fan inlet 130. Lastly, the airflow exits thedirt cup 116 via thecollar 152 a (FIG. 5 ) and enters the suction fan andmotor assembly 118. As the air flow passes through the suction fan andmotor assembly 118, the air cools the motor and exits the vacuum cleaner through theexhaust ports 131 in thehousing 110. - With reference now to
FIG. 9 , a horizontal cross section of the hand-heldvacuum cleaner 100 is shown. Clearly visible inFIG. 9 are thesuction nozzle 112, thebrushroll 162, thehousing 110, the suction fan andmotor assembly 118, thedirt cup 116, thedirt cup door 134 and thefilter assembly 128. Also, a portion of the air flow path is shown within the cyclonic separating chamber of the dirt cup 116 (as indicated by the solid arrows showing circular movement about the filter cartridge 144). Dotted arrows indicate air flow from thefilter cartridge 144 into the suction fan andmotor assembly 118 and out through theexhaust ports 131 on the sides of thehousing 110. - Now with reference to
FIG. 10 , an enlarged vertical cross section of thedirt cup 116 and thefilter assembly 128 is shown. Thefilter cartridge 144 including thebase 152, thefilter medium 154 and thefilter cap 156 are shown. Thehandle portion 152 c of thebase 152 of thefilter cartridge 144 is also shown. As described previously, thefilter cartridge 144 is rotatably engaged with thefilter support plate 142 via thesegmented flange 151. Thetabs 152 b of thecollar 152 a engage and generate a pressure fit between the base 152 and thesegmented flange 151. - With continued reference to
FIG. 10 , the air flow moves from thefluid channel 164 through thedirty air outlet 132 past thedirty air inlet 148 as indicated by reference indicia A. The air flow is then redirected by the cyclonicair flow deflector 150 to produce a cyclonic air flow B. The air flow C then spirals about thefilter cartridge 144 by which dense heavier than air debris is deposited in thedirt cup 116. The airflow D then proceeds through thefilter medium 154, through thecollar 152 a, past thesuction fan inlet 130, and into the suction fan andmotor assembly 118. Also illustrated inFIG. 10 is an enlarged cross section of thelatch 140, thecatch 138, thehinge 136 and the dirt cupdoor sealing gasket 160. Thelatch 140 includes abutton surface 166 which the user may depress to open thedirt cup door 134. Depressing thelatch 140 causes an end of the latch to pivot upward. As the latch end pivots upward thecatch 138 disengages permitting thedirt cup door 134 to pivot about thehinge 136 into the open position. - During operation of the hand-held
vacuum cleaner 100, dirty air is drawn into the dirt cup wherein the dirty air undergoes a cyclonic dirt separation as described previously. As more and more debris collects in the dirt cup, the air flow through thevacuum cleaner 100 is reduced. This results in a lower amount of suction being produced at the suction nozzle. In order to restore the air flow to its original level, the user of the hand-heldvacuum cleaner 100 will need to empty the dirt cup. Emptying the dirt cup may be accomplished in a number of ways. One way of emptying the dirt cup is by simply removing the dirt cup from the housing. This is accomplished by rotating the dirt cup in a clockwise direction (as viewed from the front of the hand-held vacuum cleaner 100) and pulling outward until thenubs 120 disengage the slots 122 (FIGS. 3, 4 ). Once the dirt cup is removed, the filter assembly may be removed by gently pulling on thehandle portion 152 c of the filter cartridge. With the filter assembly removed, the dirt cup may be emptied by tilting the dirt cup opening towards and into an appropriate trash receptacle. At this point, the user may also elect to replace the filter cartridge with a new clean cartridge, or simply clean the filter material of the cartridge. - Another technique for emptying the dirt cup involves using the dirt cup door. In this case, the dirt cup need not be removed from the housing. Nor does this require the filter assembly to be removed from the dirt cup. In fact, the hand-held
vacuum cleaner 100 need only be tilted in a vertical orientation with the dirt cup door pointing in a downward direction while the user depresses the latch. Depressing the latch releases the catch and allows the dirt cup door to swing open. Agitating or lightly tapping the dirt cup will aid in dislodging dirt and debris within the dirt cup, allowing such dirt and debris to drop through the dirt cup door opening and into an appropriate trash receptacle. As before, the user may elect to clean or change out the filter cartridge after removing the dirt cup. In fact, it should be appreciated, that the filter cartridge could be removed from the dirt cup (without first removing the dirt cup from the housing) by reaching through the dirt cup door opening and disengaging the filter cartridge from the filter support plate. However, as illustrated, the present filter cartridge is too large to pass entirely through the dirt cup door opening. Nevertheless, it can be contemplated that either the present filter cartridge can be reduced in size to accommodate the dirt cup door opening or the dirt cup door opening could be enlarged to accommodate the filter cartridge. - Also, to facilitate the removal of the filter cartridge from the filter support plate, it should be appreciated that the handle on the filter cartridge could be differently shaped and located elsewhere on the filter cartridge. For example, the filter cartridge could utilize a filter frame that would rigidly secure the
filter base 152 to the end cap 156 (FIG. 5 ), thus, allowing the end cap to be used as a handle surface. Similarly, the handle portion could be formed on the outer circumference of the base. In addition, the filter support plate could be fastened or integrally formed to the housing, rather than being secured internally to the dirt cup via a frictional fit. - It should be noted that multiple gaskets located in the
handheld vacuum cleaner 100 cooperate to prevent unfiltered dirty air flow from entering the suction fan and motor assembly and to also prevent ambient air from entering into the dirt cup from the edges of the dirt cup door during operation. The dirty air outlet gasket, the filter support plate gasket, and the filter cartridge base gasket prevents unfiltered dirty air within thedirt cup 116 from directly entering the suction fan andmotor assembly 118. A leak of this nature, over-time, could cause extensive dirt accumulation within the suction fan and motor assembly. This accumulation could result in overheating of the motor or premature wear-out of journal and or roller bearings. The dirt cup door gasket, located about the perimeter of the dirt cup door, prevents ambient air from entering the dirt cup during operation of the hand-heldvacuum cleaner 100 and prevents fine debris from escaping when the cleaner is not operating. An air leak of this nature would have no detrimental impact on the suction fan and motor assembly, however, it would reduce the overall suction capability of the hand-heldvacuum cleaner 100. The dirt cup door gasket is compressed due to the pressure generated between the catch and the latch, thus, providing an air tight seal about the dirt cup door opening. Because of the pressure generated between the catch and the latch, the dirt cup door is prevented from accidentally opening on its own during use. Additional latch pressure may be generated by placing a compression spring beneath the button surface of the latch to generate greater downward force at the tip of the latch. - The hand-held
vacuum cleaner 100 may be powered by a variety of sources. One source could be a 110-120 volts AC house supply (as is standard in the U.S.A.) or 220-240 volts AC (as prevalent in Europe) provided via apower line 170, shown inFIG. 1 . Alternately, the hand-heldvacuum cleaner 100 could be configured to operate on a DC power supply by having an appropriate DC motor. A DC power supply could include a 12 volt supply as provided, for example, by a rechargeable or removable battery pack or even by a cigarette lighter or a power outlet in an automobile or other vehicle. Doing so would have the advantage of making the hand-heldvacuum cleaner 100 even more portable. Lastly, it should noted that the hand-heldvacuum cleaner 100 need not contain the brushroll as described previously. As an alternative to having the brushroll, the suction nozzle may be flat, smooth, or only contain static bristles located along an opening of the suction nozzle to help agitate and deflect debris into the suction nozzle. - Now with reference to
FIG. 11 , a side cross sectional view of a second embodiment of a vacuum cleaner having a cyclonic twist off dirt cup is shown. More particularly, the second embodiment depicts a sticktype vacuum cleaner 200. Generally, thestick vacuum cleaner 200 includes ahousing 210, anozzle portion 212, a handle located at anupper portion 214, adirt cup 216 and a suction motor andfan assembly 218. Normally, stick vacuums do not employ a brushroll. Thus, one is not shown inFIG. 11 . As described with reference to the first embodiment of thevacuum cleaner 100, the second embodiment of thevacuum cleaner 200 also includes adirt cup door 234 having ahinge 236, acatch 238 and alatch 240. Disposed internally to thedirt cup 216 is afilter support plate 242, afilter cartridge 244 and a cyclonicair flow deflector 250. The cyclonicair flow deflector 250 may be formed integrally with thefilter support plate 242. Thefilter cartridge 244 further includes abase 252, afilter medium 254 and anend cap 256. As before, thefilter base 252 includes a plurality of tabs which engage a plurality of notches in a segmented flange of thefilter support plate 242. In addition, thedirt cup 216 of the second embodiment can employ the same twist on assembly as does the first embodiment. Thedirt cup 216 may be attached to thehousing 210 through the use of a plurality of nubs disposed along an outer circumference of thehousing 210, as well as a plurality of slots disposed along an inner circumference of thedirt cup 216. The plurality of slots in thedirt cup 216 engage the plurality of nubs along the outer circumference of thehousing 210. - In much the same way (as described previously with respect to the first embodiment 100), the user of the second embodiment may use a
dirt cup door 234 to empty debris that is collected in thedirt cup 216 during vacuuming. As before, thedirt cup 216 may be emptied a number of ways. The user may elect to twist off theentire dirt cup 216, remove thefilter support plate 242 along with thefilter cartridge 244 and empty out the contents of thedirt cup 216. Alternatively, the user may elect to leave thedirt cup 216 attached and use thedirt cup door 234 to the empty thedirt cup 216. The debris may be emptied through thedirt cup door 234 by depressing thelatch 240 and allowing thedirt cup door 234 to rotate about thehinge 236. In this case, the user may conveniently empty the dirt cup by simply lifting the sticktype vacuum cleaner 200 over a trash receptacle while depressing thelatch 240. In all other aspects, the operation of thedirt cup 216 and thedirt cup door 234 are the same as in thefirst embodiment 100. - Now with reference to
FIG. 12 , a side cross sectional view of a third embodiment of a vacuum cleaner having a cyclonic twist off dirt cup is shown. In particular, the third embodiment depicts an uprighttype vacuum cleaner 300. As in the earlier two embodiments, theupright vacuum cleaner 300 also includes ahousing 310, asuction head portion 312, a handle that may be located at anupper portion 314 of thehousing 310, adirt cup 316 and a suction motor andfan assembly 318. In contrast to the sticktype vacuum cleaner 200 of the second embodiment, in the third embodiment, the suction motor andfan assembly 318 is disposed in thesuction head portion 312, rather than in thehousing portion 310. Similar to the first and second embodiments, thedirt cup 316 of the third embodiment includes adirt cup door 334, ahinge 336, acatch 338 and alatch 340. However, afilter support plate 342 may be rigidly secured or made of one-piece with thehousing 310 and may only be partially disposed internally to thedirt cup 316. As with the first and second embodiments, afilter cartridge 344, is at least partially disposed internally to thedirt cup 316 and may be secured via a twist-on assembly to thefilter support plate 342. In addition, thethird embodiment 300 includes a cyclonicair flow deflector 350 that can be integrally formed with thefilter support plate 342. - Once again, the method of operation and attachment of the
dirt cup 316 and thefilter cartridge 344 are the same in the third embodiment as they were in the first and second embodiments. One noteworthy difference is thedirt cup 316 and thefilter cartridge 344 have an overall longer length than thedirt cup 216 andfilter cartridge 244 of the second embodiment. The longer orlarger dirt cup 316 andlarger filter cartridge 344 provide for greater volume of debris accumulation than do the first or second embodiments. This provides the added advantage of reducing the frequency of emptying thedirt cup 316. Furthermore, alarger cartridge 344 provides a lower loss of air flow through theupright vacuum cleaner 300 as dirt and debris begin to accumulate in thedirt cup 316. - Another difference involves the pathways of the clean air and dirty air through the
upright vacuum cleaner 300. The dirty air flow pathway begins at an opening in thesuction head 312 moving past arotating brushroll 313 and flows through the suction head through a dirtyair fluid channel 364 in thehousing 310. Then the airflow begins to move downward towards thedirt cup 316 and impinges against the cyclonicair flow deflector 350 which induces the cyclonic airflow separation within thedirt cup 316. As the air flow slows, it enters through the sides of thefilter cartridge 344 initially traveling upward into the clean air fluid channel in thehousing 310, then downwards through the suction fan andmotor assembly 318 eventually exiting theupright vacuum cleaner 300. - It should also be noted that the
dirt cup 316 need not be removed in order to be emptied. The user may simply and conveniently locate a trash receptacle beneath thedirt cup 316 directly below thedirt cup door 334 and depress thelatch 340 in order to empty any dirt and debris directly into the trash receptacle. The unique structural orientation of thedirt cup 316 with respect to theupright vacuum cleaner 300 permits this method of convenient emptying of thedirt cup 316. In all other aspects, the operation of thedirt cup 316 and thedirt cup door 334 are the same as in the first embodiment. - Modifications and alterations will occur to others upon reading and understanding the preceding detailed description. It is intended that the embodiments described herein be construed as including all such modifications and alterations, insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (23)
1. A hand-held vacuum cleaner comprising:
a housing having a first end and a second end;
a suction nozzle located adjacent the first end of the housing;
a suction fan and motor assembly located in the housing;
a dirt cup detachably mounted adjacent the second end of the housing;
wherein, the dirt cup includes an inlet in fluid communication with the suction nozzle, an outlet in fluid communication with the suction fan and motor assembly, and a dirt cup door located on one end of the dirt cup.
2. The hand-held vacuum cleaner of claim 1 wherein at least a portion of the dirt cup defines a cyclonic flow chamber.
3. The hand-held vacuum cleaner of claim 1 wherein the dirt cup includes a latch for releasably engaging the dirt cup door.
4. The hand-held vacuum cleaner of claim 3 wherein the dirt cup door includes a catch for releasably engaging the latch.
5. The hand-held vacuum cleaner of claim 1 wherein the dirt cup includes a hinge for the dirt cup door.
6. The hand-held vacuum cleaner of claim 1 further comprising a filter assembly releasably mounted to the dirt cup, wherein the filter assembly is disposed upstream of the suction fan and motor assembly.
7. The hand-held vacuum cleaner of claim 6 wherein the filter assembly includes a filter cartridge and a filter support plate.
8. The hand-held vacuum cleaner of claim 7 wherein the filter support plate includes a cyclonic airflow deflector inlet, a centrally located clean air outlet, and a sealing gasket disposed about an outer circumference of the filter support plate.
9. The hand-held vacuum cleaner of claim 1 further comprising a brushroll mounted to the housing wherein the brushroll is rotatably driven by the fan and motor assembly.
10. The hand-held vacuum cleaner of claim 1 wherein the dirt cup door includes a sealing gasket.
11. A vacuum cleaner comprising:
a housing including at least one nub disposed about an outer circumference of the housing;
a suction nozzle located adjacent a first end of the housing;
a suction fan and motor assembly located in the housing; and
a dirt cup including a first end and a second end, the dirt cup having an inlet in fluid communication with the suction nozzle and an outlet in fluid communication with the suction fan and motor assembly, and at least one slot disposed about an inner circumference of the first end of the dirt cup, wherein the at least one nub of the housing cooperates with the at least one slot to rotatably secure the dirt cup to the housing; and
a filter assembly mounted to at least one of the dirt cup and the housing.
12. The hand-held vacuum cleaner of claim 11 further comprising a brushroll which is rotatably driven by the fan and motor assembly.
13. The hand-held vacuum cleaner of claim 11 wherein the filter assembly includes a filter cartridge and a filter support plate.
14. Then hand-held vacuum cleaner of claim 13 wherein a cyclonic flow chamber is defined within the dirt cup between the filter support plate and the second end of the dirt cup.
15. The hand-held vacuum cleaner of claim 13 wherein the filter support plate includes a cyclonic airflow deflector, a centrally located outlet, and a sealing gasket about an outer circumference of the filter support plate.
16. The hand-held vacuum cleaner of claim 13 wherein the filter assembly is disposed upstream of the suction fan.
17. The hand-held vacuum cleaner of claim 13 wherein the filter assembly is frictionally engaged along an inner wall surface of the dirt cup.
18. The hand-held vacuum cleaner of claim 13 wherein the filter cartridge includes a filter base, a filter end cap, and a filter medium disposed between the filter base and the filter end cap.
19. The hand-held vacuum cleaner of claim 18 wherein the filter base includes at least one tab that is snappingly engageable with at least one detent of the filter support plate.
20. The hand-held vacuum cleaner of claim 18 wherein the filter base includes a handle portion.
21. A vacuum cleaner comprising:
a housing having a first end and a second end;
a suction nozzle located adjacent the first end of the housing;
a suction fan and motor assembly located in the housing;
a dirt cup rotatably mounted to the housing;
a filter support including a segmented flange, the segmented flange having at least one notch and at least one detent adjacent to the at least one notch, the filter support plate being disposed upstream from said suction fan and motor assembly; and
a filter including at least one tab disposed on the filter, the at least one tab having a ridge, the at least one tab and the ridge cooperating with the at least one notch and the at least one detent to rotatably mount the filter to the filter support.
22. The hand-held vacuum cleaner of claim 21 wherein the segmented flange includes at least one stop adjacent to the at least one detent, the at least one stop precluding the at least one tab from rotating past the at least one detent.
23. The hand-held vacuum cleaner of claim 21 wherein the filter further comprises a handle portion.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/249,282 US20060156508A1 (en) | 2005-01-14 | 2005-10-13 | Vacuum cleaner with cyclonic separating dirt cup and dirt cup door |
PCT/US2006/000819 WO2006076363A2 (en) | 2005-01-14 | 2006-01-11 | Vacuum cleaner with cyclonic separating dirt cup and dirt cup door |
CNA2006800047001A CN101119675A (en) | 2005-01-14 | 2006-01-11 | Vacuum cleaner with swirl separation dust cup and dust cup door |
EP06717955A EP1845829A2 (en) | 2005-01-14 | 2006-01-11 | Vacuum cleaner with cyclonic separating dirt cup and dirt cup door |
AU2006205022A AU2006205022A1 (en) | 2005-01-14 | 2006-01-11 | Vacuum cleaner with cyclonic separating dirt cup and dirt cup door |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US29/221,442 USD520127S1 (en) | 2005-01-14 | 2005-01-14 | Filter assembly |
US29/221,441 USD521137S1 (en) | 2005-01-14 | 2005-01-14 | Filter |
US29/237,958 USD541399S1 (en) | 2005-09-08 | 2005-09-08 | Filter assembly |
US11/249,282 US20060156508A1 (en) | 2005-01-14 | 2005-10-13 | Vacuum cleaner with cyclonic separating dirt cup and dirt cup door |
Related Parent Applications (3)
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US29/221,441 Continuation-In-Part USD521137S1 (en) | 2005-01-14 | 2005-01-14 | Filter |
US29/221,442 Continuation-In-Part USD520127S1 (en) | 2005-01-14 | 2005-01-14 | Filter assembly |
US29/237,958 Continuation-In-Part USD541399S1 (en) | 2005-01-14 | 2005-09-08 | Filter assembly |
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US20060156508A1 true US20060156508A1 (en) | 2006-07-20 |
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US11/249,282 Abandoned US20060156508A1 (en) | 2005-01-14 | 2005-10-13 | Vacuum cleaner with cyclonic separating dirt cup and dirt cup door |
Country Status (5)
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US (1) | US20060156508A1 (en) |
EP (1) | EP1845829A2 (en) |
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Also Published As
Publication number | Publication date |
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CN101119675A (en) | 2008-02-06 |
AU2006205022A1 (en) | 2006-07-20 |
WO2006076363A2 (en) | 2006-07-20 |
EP1845829A2 (en) | 2007-10-24 |
WO2006076363A3 (en) | 2006-12-14 |
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