US20090229540A1 - Water heater - Google Patents
Water heater Download PDFInfo
- Publication number
- US20090229540A1 US20090229540A1 US12/403,650 US40365009A US2009229540A1 US 20090229540 A1 US20090229540 A1 US 20090229540A1 US 40365009 A US40365009 A US 40365009A US 2009229540 A1 US2009229540 A1 US 2009229540A1
- Authority
- US
- United States
- Prior art keywords
- case
- water heater
- chamber
- water
- heating device
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000002955 isolation Methods 0.000 claims description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002184 metal Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/0009—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters of the reduced pressure or vacuum steam type
Definitions
- the present invention relates generally to a heating device, and more particularly to a water heater.
- conventional water heaters include gas water heaters and electric water heaters.
- the gas water heater has a continuous S pipe therein and a gas burner heating the pipe directly.
- the electric water heater has two types. The first type has an electric heater to heat water directly.
- the second type has electromagnetic heating means, which generates an eddy current to induce a metal block, and then water flows through the metal block to be heated.
- the gas water heater has a poorer efficiency than the electric water heater, and it has to consider the air ventilation issue for the place mounting the gas water heater to avoid accident.
- the other problem of the gas water heater is that it usually has a long distance between the water heater and the hydrant that user has to wait for the cold water in the pipe running out before the water comes out, and the temperature will loss in the long pipe also.
- Another issue of the gas water heater is temperature control. It is caused by the long pipe also to have the reaction time of temperature change too slow that user usually over adjusts to make the water temperature too hot or too cold when the water temperature had been changed to the designed temperature.
- Some small electric water heaters have no water tank therein that such water heater may be mounted in the house. The advantage of it is fast reaction in temperature adjustment, and the drawback of it is that it can not supply sufficient hot water.
- the mounting place is limited, and it still has the problem of too long distance between the water heater and hydrant.
- the primary objective of the present invention is to provide a water heater, which has a superior heat efficiency to save power and supply enough hot water.
- a water heat includes a case having an airtight chamber therein, a water pipe received in the chamber of the case with a first connection end and a second connection end extended out of the case respectively, a thermal medium, which is liquid in a room temperature, received in the chamber of the case, and a heating device for heating the thermal medium directly or indirectly.
- FIG. 1 is a perspective view of a first preferred embodiment of the present invention
- FIG. 2 is a sectional view along the 2-2 line of FIG. 1 ;
- FIG. 3 is a sectional view of the first preferred embodiment of the present invention, showing the operation of the water heater;
- FIG. 4 is a sectional view of a second preferred embodiment of the present invention.
- FIG. 5 is a sectional view of a third preferred embodiment of the present invention.
- FIG. 6 is a sectional view of a fourth preferred embodiment of the present invention.
- FIG. 7 is a sectional view of a fifth preferred embodiment of the present invention.
- FIG. 8 is a sectional view of a sixth preferred embodiment of the present invention.
- a water heater 10 of the first preferred embodiment of the present invention includes:
- a case 20 has an airtight chamber 30 therein, with a pressure lower than one atmospheric pressure.
- the chamber 30 is preferred vacuumed.
- the required pressure in the chamber 30 is less than 10 ⁇ 1 Torr, and more preferable is less than 10 ⁇ 2 Torr, and further more preferable is less than 10 ⁇ 3 Torr.
- a water pipe 40 is a continuous S-shaped pipe mounted in the case 20 , which has a first connection end 41 and a second connection end 42 extended out of the case 20 respectively at opposite sides of the case 20 , and the second connection is at a higher position and the first connection end is at a lower position, as shown in FIG. 2 .
- the first and second connection ends 41 , 42 of the water pipe 40 are to connectors connected to external pipes to keep the airtight condition of the chamber 30 .
- a thermal medium 50 which is a liquid in room temperature with a lower vaporized temperature, is received in the chamber 20 of the case 10 .
- a need of the thermal medium 50 is not much.
- sufficient thermal medium 50 only takes 1.5% to 20% of a volume of the chamber 20 , preferable is 2% to 15%, and more preferable is 10%.
- the consideration of the quantity of the thermal medium 50 is cost and heat transfer efficiency. Any quantity of the thermal medium 50 in the chamber 20 should be still in the scope of the present invention.
- the thermal medium may be a material with a high volatility, such as ether, alcohol, benzene or a mixture of above, or other suitable materials.
- a heating device 60 which is an electric heater, is mounted on a bottom of the case 10 .
- a cold water pipe 11 is connected to the first connecting end 41 of the water pipe 40
- a hot water pipe 12 is connected to the second connecting end 42 of the water pipe 40
- a power line (not shown) is connected to the heating device 60 .
- the heating device 60 may be provided with a controller (not shown) for power control, a temperature sensor (not shown) for temperature control, and a flow sensor (not shown) for turn-on or turn-off water. Aforesaid control devices are common in the conventional water heater, so we do not describe the detail here.
- the heating device 60 When the heating device 60 is energized to heat the thermal medium 50 in the case 20 , and then the thermal medium 50 will be vaporized quickly and the vapor of the thermal medium 50 will be full in the chamber 30 to heat the water in the water pipe 40 . It is obvious that the heating area of the water pipe 40 is maximized to the entire surface of the water pipe 40 that would provide the maximum heat efficiency.
- the vacuum condition is related to vaporization of the thermal medium 50 .
- the lower pressure in the chamber 30 will get a faster evaporation the thermal medium 50 and a higher heat efficiency.
- the present invention provides the vaporized thermal medium to be a medium for heat transfer to water, so that the vaporized thermal medium will reach to the whole chamber for heat transfer. That is why the present invention has a higher heat efficiency to heat water quickly.
- the liquidized thermal medium 50 will flow back to a bottom of the chamber 30 along an interior wall of the case 20 , and be reheated by the heating device 60 for vaporization again that the water in the pipe may be heated to a desired temperature quickly and flow out the hot water pipe 12 through the second connecting end 42 .
- FIG. 4 shows a water heater of the second preferred embodiment of the present invention (all of the elements in the following embodiments have the same reference numerals as the corresponding elements in the first preferred embodiment), which is similar to the first preferred embodiment except that a heating device 60 ′ is mounted on a bottom of the chamber 30 , in other words, on a bottom of an interior side of the case 20 .
- the heating efficiency of the heating device 60 ′ will be better.
- FIG. 5 shows a water heater of the third preferred embodiment. Basically, it is as same as the second preferred except that the water heater of the third preferred embodiment further includes an outer case 70 to enclose the case 20 therein. A space between the outer case 70 and the case 20 is vacuumed to form a vacuum thermal isolation layer 80 .
- FIG. 6 shows a water heater of the fourth preferred embodiment of the present invention, which is similar to the third preferred embodiment except that the space between the outer case 70 and the case 20 is not vacuumed but is inserted with a thermal isolation material to form a thermal isolation layer 90 .
- FIG. 7 shows a water heater of the fifth preferred embodiment of the present invention, which the heating device is a gas burner 100 to replace the electric heater, and an out case 110 is provided to enclose the case 20 therein for wind shield and air guiding.
- the heating device is a gas burner 100 to replace the electric heater
- an out case 110 is provided to enclose the case 20 therein for wind shield and air guiding.
- the present invention provides the thermal medium to be the heat transfer medium that the heat generated from the heating device is transferred to the entire space in the case.
- the water heater of the present invention can heat a greater quantity of water very fast. While the water heater of the present invention is equipped with electric heating device, it can be mounted in the shower room or kitchen directly. It is very easy to mount and operate the water heater of the present invention. Some embodiments provide a thermal isolation device to have all the power in heating water. The power loss is minimized
- FIG. 8 is a water heater of the sixth preferred embodiment of the present invention, which is equipped with the gas heating device 100 as same as the fifth preferred embodiment.
- the water heater of the sixth preferred embodiment has the case 20 provided with a tunnel 25 from a bottom to a top thereof.
- the tunnel 25 is a ventilation passageway for burning gas.
- a spiral water pipe 40 ′ surrounds the tunnel 25 .
Abstract
A water heat includes a case having an airtight chamber therein, a water pipe received in the chamber of the case with a first connection end and a second connection end extended out of the case respectively, a thermal medium, which is liquid in a room temperature, received in the chamber of the case, and a heating device for heating the thermal medium directly or indirectly.
Description
- 1. Field of the Invention
- The present invention relates generally to a heating device, and more particularly to a water heater.
- 2. Description of the Related Art
- Typically, conventional water heaters include gas water heaters and electric water heaters. The gas water heater has a continuous S pipe therein and a gas burner heating the pipe directly. The electric water heater has two types. The first type has an electric heater to heat water directly. The second type has electromagnetic heating means, which generates an eddy current to induce a metal block, and then water flows through the metal block to be heated. Typically, the gas water heater has a poorer efficiency than the electric water heater, and it has to consider the air ventilation issue for the place mounting the gas water heater to avoid accident. The other problem of the gas water heater is that it usually has a long distance between the water heater and the hydrant that user has to wait for the cold water in the pipe running out before the water comes out, and the temperature will loss in the long pipe also. Another issue of the gas water heater is temperature control. It is caused by the long pipe also to have the reaction time of temperature change too slow that user usually over adjusts to make the water temperature too hot or too cold when the water temperature had been changed to the designed temperature. Some small electric water heaters have no water tank therein that such water heater may be mounted in the house. The advantage of it is fast reaction in temperature adjustment, and the drawback of it is that it can not supply sufficient hot water. There are large electric water heaters in the present market, which may supply sufficient hot water. However, the mounting place is limited, and it still has the problem of too long distance between the water heater and hydrant.
- The primary objective of the present invention is to provide a water heater, which has a superior heat efficiency to save power and supply enough hot water.
- According to the objective of the present invention, a water heat includes a case having an airtight chamber therein, a water pipe received in the chamber of the case with a first connection end and a second connection end extended out of the case respectively, a thermal medium, which is liquid in a room temperature, received in the chamber of the case, and a heating device for heating the thermal medium directly or indirectly.
-
FIG. 1 is a perspective view of a first preferred embodiment of the present invention; -
FIG. 2 is a sectional view along the 2-2 line ofFIG. 1 ; -
FIG. 3 is a sectional view of the first preferred embodiment of the present invention, showing the operation of the water heater; -
FIG. 4 is a sectional view of a second preferred embodiment of the present invention; -
FIG. 5 is a sectional view of a third preferred embodiment of the present invention; -
FIG. 6 is a sectional view of a fourth preferred embodiment of the present invention; -
FIG. 7 is a sectional view of a fifth preferred embodiment of the present invention; and -
FIG. 8 is a sectional view of a sixth preferred embodiment of the present invention - As shown in
FIG. 1 andFIG. 2 , awater heater 10 of the first preferred embodiment of the present invention includes: - A
case 20 has anairtight chamber 30 therein, with a pressure lower than one atmospheric pressure. Thechamber 30 is preferred vacuumed. The required pressure in thechamber 30 is less than 10−1 Torr, and more preferable is less than 10−2 Torr, and further more preferable is less than 10−3 Torr. - A
water pipe 40 is a continuous S-shaped pipe mounted in thecase 20, which has afirst connection end 41 and asecond connection end 42 extended out of thecase 20 respectively at opposite sides of thecase 20, and the second connection is at a higher position and the first connection end is at a lower position, as shown inFIG. 2 . In practice, the first and second connection ends 41, 42 of thewater pipe 40 are to connectors connected to external pipes to keep the airtight condition of thechamber 30. - A
thermal medium 50, which is a liquid in room temperature with a lower vaporized temperature, is received in thechamber 20 of thecase 10. A need of thethermal medium 50 is not much. Typically, sufficientthermal medium 50 only takes 1.5% to 20% of a volume of thechamber 20, preferable is 2% to 15%, and more preferable is 10%. The consideration of the quantity of thethermal medium 50 is cost and heat transfer efficiency. Any quantity of thethermal medium 50 in thechamber 20 should be still in the scope of the present invention. The thermal medium may be a material with a high volatility, such as ether, alcohol, benzene or a mixture of above, or other suitable materials. - A
heating device 60, which is an electric heater, is mounted on a bottom of thecase 10. - As shown in
FIG. 3 , acold water pipe 11 is connected to the first connectingend 41 of thewater pipe 40, and ahot water pipe 12 is connected to the second connectingend 42 of thewater pipe 40. A power line (not shown) is connected to theheating device 60. Theheating device 60 may be provided with a controller (not shown) for power control, a temperature sensor (not shown) for temperature control, and a flow sensor (not shown) for turn-on or turn-off water. Aforesaid control devices are common in the conventional water heater, so we do not describe the detail here. When theheating device 60 is energized to heat thethermal medium 50 in thecase 20, and then thethermal medium 50 will be vaporized quickly and the vapor of thethermal medium 50 will be full in thechamber 30 to heat the water in thewater pipe 40. it is obvious that the heating area of thewater pipe 40 is maximized to the entire surface of thewater pipe 40 that would provide the maximum heat efficiency. The vacuum condition is related to vaporization of thethermal medium 50. The lower pressure in thechamber 30 will get a faster evaporation thethermal medium 50 and a higher heat efficiency. The present invention provides the vaporized thermal medium to be a medium for heat transfer to water, so that the vaporized thermal medium will reach to the whole chamber for heat transfer. That is why the present invention has a higher heat efficiency to heat water quickly. After heat transfer, the liquidizedthermal medium 50 will flow back to a bottom of thechamber 30 along an interior wall of thecase 20, and be reheated by theheating device 60 for vaporization again that the water in the pipe may be heated to a desired temperature quickly and flow out thehot water pipe 12 through the second connectingend 42. -
FIG. 4 shows a water heater of the second preferred embodiment of the present invention (all of the elements in the following embodiments have the same reference numerals as the corresponding elements in the first preferred embodiment), which is similar to the first preferred embodiment except that aheating device 60′ is mounted on a bottom of thechamber 30, in other words, on a bottom of an interior side of thecase 20. The heating efficiency of theheating device 60′ will be better. -
FIG. 5 shows a water heater of the third preferred embodiment. Basically, it is as same as the second preferred except that the water heater of the third preferred embodiment further includes anouter case 70 to enclose thecase 20 therein. A space between theouter case 70 and thecase 20 is vacuumed to form a vacuumthermal isolation layer 80. -
FIG. 6 shows a water heater of the fourth preferred embodiment of the present invention, which is similar to the third preferred embodiment except that the space between theouter case 70 and thecase 20 is not vacuumed but is inserted with a thermal isolation material to form athermal isolation layer 90. -
FIG. 7 shows a water heater of the fifth preferred embodiment of the present invention, which the heating device is agas burner 100 to replace the electric heater, and anout case 110 is provided to enclose thecase 20 therein for wind shield and air guiding. - The present invention provides the thermal medium to be the heat transfer medium that the heat generated from the heating device is transferred to the entire space in the case. The water heater of the present invention can heat a greater quantity of water very fast. While the water heater of the present invention is equipped with electric heating device, it can be mounted in the shower room or kitchen directly. It is very easy to mount and operate the water heater of the present invention. Some embodiments provide a thermal isolation device to have all the power in heating water. The power loss is minimized
-
FIG. 8 is a water heater of the sixth preferred embodiment of the present invention, which is equipped with thegas heating device 100 as same as the fifth preferred embodiment. The water heater of the sixth preferred embodiment has thecase 20 provided with atunnel 25 from a bottom to a top thereof. Thetunnel 25 is a ventilation passageway for burning gas. Aspiral water pipe 40′ surrounds thetunnel 25.
Claims (15)
1. A water heat, comprising:
a case having an airtight chamber therein;
a water pipe received in the chamber of the case with a first connection end and a second connection end extended out of the case respectively;
a thermal medium, which is liquid in a room temperature, received in the chamber of the case; and
a heating device for heating the thermal medium directly or indirectly.
2. The water heater as defined in claim 1 , wherein a pressure in the chamber is lower than one atmospheric pressure.
3. The water heater as defined in claim 2 , wherein the chamber of the case is vacuumed.
4. The water heater as defined in claim 2 , wherein the pressure in the chamber 30 is less than 10−2 Torr.
5. The water heater as defined in claim 1 , wherein the water pipe has a continuous S shape, and the second connection end is higher than the first connection end.
6. The water heater as defined in claim 1 , wherein the heating device is a burner mounted on a bottom of the case.
7. The water heater as defined in claim 6 , wherein the heating device is a gas burner.
8. The water heater as defined in claim 1 , wherein the heating device is an electric heater mounted on a bottom of the case.
9. The water heater as defined in claim 1 , wherein the heating device is an electric heater mounted on a bottom of the chamber.
10. The water heater as defined in claim 1 , wherein the thermal medium takes 1.5% to 20% of a volume of the chamber.
11. The water heater as defined in claim 1 , wherein the thermal medium is made of a material with a high volatility selected from a group consisting of ether, alcohol, benzene.
12. The water heater as defined in claim 1 , further comprising a thermal isolation layer surrounding the case.
13. The water heater as defined in claim 1 , further comprising an outer case enclosing the case therein.
14. The water heater as defined in claim 13 , wherein a vacuum thermal isolation layer is provided between the out case and the case.
15. The water heater as defined in claim 13 , wherein a thermal isolation layer is provided between the out case and the case.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW097109247A TW200938781A (en) | 2008-03-14 | 2008-03-14 | Water heater |
TW97109247 | 2008-03-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090229540A1 true US20090229540A1 (en) | 2009-09-17 |
Family
ID=40680530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/403,650 Abandoned US20090229540A1 (en) | 2008-03-14 | 2009-03-13 | Water heater |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090229540A1 (en) |
EP (1) | EP2101122A2 (en) |
JP (1) | JP2009222381A (en) |
AU (1) | AU2009201039B2 (en) |
SG (1) | SG155851A1 (en) |
TW (1) | TW200938781A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110214437A1 (en) * | 2010-03-02 | 2011-09-08 | Samsung Electronics Co., Ltd. | Heat pump system and control method thereof |
USD766409S1 (en) * | 2014-07-15 | 2016-09-13 | Robert Bosch Gmbh | Heating device |
USD769426S1 (en) * | 2015-01-15 | 2016-10-18 | Robert Bosch Gmbh | Heating device |
USD903665S1 (en) * | 2018-02-01 | 2020-12-01 | Hewlett-Packard Development Company, L.P. | Computer |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102168884A (en) * | 2010-12-18 | 2011-08-31 | 刘艳妮 | Instant water heater |
CN109341056A (en) * | 2018-08-24 | 2019-02-15 | 芜湖鸣人热能设备有限公司 | Vacuum hot water boiler |
CN110813034B (en) * | 2019-11-13 | 2021-08-24 | 上海交通大学 | S-shaped tube bundle falling film absorber |
Citations (6)
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US2748249A (en) * | 1953-03-09 | 1956-05-29 | Collerati Mario | Method of and apparatus for heating fluids |
US2791204A (en) * | 1951-08-16 | 1957-05-07 | Smith Corp A O | Water heater utilizing heat of crystallization |
US3492461A (en) * | 1967-12-28 | 1970-01-27 | Hooker Chemical Corp | Apparatus for the protection of structures exposed to heat storage compositions |
US4251715A (en) * | 1977-12-06 | 1981-02-17 | Boliden Aktiebolag | Method for directly heating concentrated sulfuric acid by electric current flow between surface-passivated electrodes |
US4378846A (en) * | 1980-12-15 | 1983-04-05 | Brock Kurtis B | Enhanced oil recovery apparatus and method |
US20070133963A1 (en) * | 2005-12-08 | 2007-06-14 | Chin-Kuang Luo | Heat conducting assembly for a water heater, and method for making the heat conducting assembly |
Family Cites Families (6)
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JPS5892793A (en) * | 1981-11-26 | 1983-06-02 | Maeda Tekkosho:Kk | Water heater |
JPS5883601U (en) * | 1981-11-26 | 1983-06-06 | 株式会社前田鉄工所 | sexual boiler |
JPS5888502U (en) * | 1981-12-11 | 1983-06-15 | 株式会社大一 | Vacuum boiler overheating prevention device |
JPS60103202A (en) * | 1983-11-09 | 1985-06-07 | 三洋電機株式会社 | Decompression type steam generator |
JPS618701U (en) * | 1984-06-22 | 1986-01-20 | 株式会社 平川鉄工所 | Electric vacuum evaporator |
US5687706A (en) * | 1995-04-25 | 1997-11-18 | University Of Florida | Phase change material storage heater |
-
2008
- 2008-03-14 TW TW097109247A patent/TW200938781A/en unknown
-
2009
- 2009-03-13 US US12/403,650 patent/US20090229540A1/en not_active Abandoned
- 2009-03-13 EP EP09003698A patent/EP2101122A2/en not_active Withdrawn
- 2009-03-13 SG SG200901747-6A patent/SG155851A1/en unknown
- 2009-03-16 AU AU2009201039A patent/AU2009201039B2/en not_active Ceased
- 2009-03-16 JP JP2009063057A patent/JP2009222381A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2791204A (en) * | 1951-08-16 | 1957-05-07 | Smith Corp A O | Water heater utilizing heat of crystallization |
US2748249A (en) * | 1953-03-09 | 1956-05-29 | Collerati Mario | Method of and apparatus for heating fluids |
US3492461A (en) * | 1967-12-28 | 1970-01-27 | Hooker Chemical Corp | Apparatus for the protection of structures exposed to heat storage compositions |
US4251715A (en) * | 1977-12-06 | 1981-02-17 | Boliden Aktiebolag | Method for directly heating concentrated sulfuric acid by electric current flow between surface-passivated electrodes |
US4378846A (en) * | 1980-12-15 | 1983-04-05 | Brock Kurtis B | Enhanced oil recovery apparatus and method |
US20070133963A1 (en) * | 2005-12-08 | 2007-06-14 | Chin-Kuang Luo | Heat conducting assembly for a water heater, and method for making the heat conducting assembly |
US7319814B2 (en) * | 2005-12-08 | 2008-01-15 | Chin-Kuang Luo | Heat conducting assembly for a water heater, and method for making the heat conducting assembly |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110214437A1 (en) * | 2010-03-02 | 2011-09-08 | Samsung Electronics Co., Ltd. | Heat pump system and control method thereof |
USD766409S1 (en) * | 2014-07-15 | 2016-09-13 | Robert Bosch Gmbh | Heating device |
USD768831S1 (en) * | 2014-07-15 | 2016-10-11 | Robert Bosch Gmbh | Heating device |
USD768832S1 (en) * | 2014-07-15 | 2016-10-11 | Robert Bosch Gmbh | Heating device |
USD769428S1 (en) * | 2014-07-15 | 2016-10-18 | Robert Bosch Gmbh | Heating device |
USD769425S1 (en) * | 2014-07-15 | 2016-10-18 | Robert Bosch Gmbh | Heating device |
USD769427S1 (en) * | 2014-07-15 | 2016-10-18 | Robert Bosch Gmbh | Heating device |
USD770021S1 (en) * | 2014-07-15 | 2016-10-25 | Robert Bosch Gmbh | Heating device |
USD770604S1 (en) * | 2014-07-15 | 2016-11-01 | Robert Bosch Gmbh | Heating device |
USD773020S1 (en) * | 2014-07-15 | 2016-11-29 | Robert Bosch Gmbh | Heating device |
USD769426S1 (en) * | 2015-01-15 | 2016-10-18 | Robert Bosch Gmbh | Heating device |
USD903665S1 (en) * | 2018-02-01 | 2020-12-01 | Hewlett-Packard Development Company, L.P. | Computer |
Also Published As
Publication number | Publication date |
---|---|
TW200938781A (en) | 2009-09-16 |
JP2009222381A (en) | 2009-10-01 |
AU2009201039A1 (en) | 2009-10-01 |
SG155851A1 (en) | 2009-10-29 |
EP2101122A2 (en) | 2009-09-16 |
AU2009201039B2 (en) | 2011-07-07 |
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