WO2007123117A1 - 給湯機の異常検出装置 - Google Patents
給湯機の異常検出装置 Download PDFInfo
- Publication number
- WO2007123117A1 WO2007123117A1 PCT/JP2007/058336 JP2007058336W WO2007123117A1 WO 2007123117 A1 WO2007123117 A1 WO 2007123117A1 JP 2007058336 W JP2007058336 W JP 2007058336W WO 2007123117 A1 WO2007123117 A1 WO 2007123117A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hot water
- tank
- unit
- heat pump
- temperature
- 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
- F24D19/1054—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water the system uses a heat pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/104—Inspection; Diagnosis; Trial operation
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/223—Temperature of the water in the water storage tank
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/375—Control of heat pumps
- F24H15/38—Control of compressors of heat pumps
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/40—Control of fluid heaters characterised by the type of controllers
- F24H15/414—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based
- F24H15/45—Control of fluid heaters characterised by the type of controllers using electronic processing, e.g. computer-based remotely accessible
-
- 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
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
- F24H4/04—Storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/04—Sensors
- F24D2220/042—Temperature sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2240/00—Characterizing positions, e.g. of sensors, inlets, outlets
- F24D2240/26—Vertically distributed at fixed positions, e.g. multiple sensors distributed over the height of a tank, or a vertical inlet distribution pipe having a plurality of orifices
Definitions
- the present invention relates to an abnormality detection device for a water heater.
- a conventional heat pump type hot water heater has a heat pump unit 1 and a tank unit 2 for storing hot water heated by the heat pump unit 1.
- the tank unit 2 includes a hot water storage tank 3, a circulation path 12 connected to the hot water storage tank 3, and an intervening connection to the circulation path 12.
- the heat exchange path 14 is heated by a heat pump heating source, and the low-temperature water flowing out from the hot water storage tank 3 to the circulation path 12 is boiled and returned to the hot water storage tank 3. Yes Driving is possible.
- the hot water stored in the hot water storage tank 3 is supplied to a bathtub (not shown) or the like.
- the hot water storage tank 3 is provided with a water supply port 5 on the bottom wall thereof and a hot water outlet 6 on the upper wall thereof. Then, tap water is supplied from the water supply port 5 to the hot water storage tank 3, and hot hot water is discharged from the hot water outlet 6.
- the hot water storage tank 3 has a water intake 10 on the bottom wall, a hot water inlet 11 on the upper side wall (peripheral wall), and the water intake 10 and the hot water inlet 11 are connected to the circulation path 12. It is connected with.
- the circulation path 12 is provided with a water circulation pump 13 and a heat exchange path 14.
- a water supply channel 8 is connected to the water supply port 5.
- the hot water storage tank 3 is provided with four remaining hot water detectors 18a, 18b, 18c, 18d at a predetermined pitch in the vertical direction, and a temperature detector 19a that constitutes the feed water temperature detector 19. ing .
- Each of the remaining hot water detectors 18 & and the temperature detector 19a also has a thermistor force, for example.
- the circulation path 12 is provided with a water thermistor 20a serving as a water temperature detector 20 upstream of the heat exchange path 14, and a hot water thermistor 21a serving as a hot water temperature detector 21 downstream of the heat exchange path 14. Is provided.
- the circulation path 12 includes a water inlet pipe 15 and a hot water outlet pipe 16, and the water inlet pipe 15 includes the pump 13 described above.
- a connection that connects (connects) the first piping 15a on the side of the hot water storage tank 3 in which the heat sink is installed, the second piping 15b on the heat source side in which the water thermistor 20a is installed, and the first and second piping 15a, 15b.
- the hot water piping 16 is connected to the first piping 16a on the hot water storage tank 3 side, the second piping 16b on the heat source side with the hot water thermistor 21a, and the first and second piping 16a, 16b.
- Connection (to connect) It consists of piping 16c. In this case, as will be described later, the connecting pipes 15c and 16c are connected on site.
- the heat pump unit (heating source) 1 includes a refrigerant circuit, and the refrigerant circuit includes a compressor 25, a water heat exchanger 26 constituting the heat exchange path 14, and an electric expansion valve (decompression mechanism) 27. And an air-heat exchange (evaporator) 28 in this order. That is, the discharge pipe 29 of the compressor 25 is connected to the hydrothermal exchange 26, the hydrothermal exchange 26 and the electric expansion valve 27 are connected to the refrigerant passage 30, and the electric expansion valve 27 and the evaporator 28 are connected to the refrigerant.
- the evaporator 28 and the compressor 25 are connected by a passage 31 and are connected by a refrigerant passage 33 in which an accumulator 32 is interposed.
- the evaporator 28 is provided with a fan 34 for adjusting the capacity of the evaporator 28.
- the hot water supply apparatus configured as described above, when the compressor 25 is driven and the water circulation pump 13 is driven (actuated), the stored water is supplied from the water intake 10 provided at the bottom of the hot water storage tank 3. (Cryogenic water) flows out and flows through the heat exchange path 14 of the circulation path 12. At this time, the hot water is heated (boiling) by the hydrothermal exchange 26 and returned to the upper part of the hot water storage tank 3 from the hot water inlet 11. By continuously performing such an operation, hot water can be stored in the hot water storage tank 3. Further, during operation, the discharge pipe control for adjusting the discharge pipe temperature of the compressor 25 to the target discharge pipe temperature is performed by adjusting the opening degree of the electric expansion valve 27 and the like.
- the current electricity rate system is set at a lower price than the daytime unit price, so this operation is mainly performed during the low-night hours (for example, from 23:00 to 7:00 hours). Obi).
- a heat pump type hot water heater is known, for example, as disclosed in JP-A-2003-222406!
- the top of the hot water storage tank 3 is provided with an overheat prevention device (in order to prevent various troubles due to an abnormal temperature rise in the hot water in the hot water storage tank 3).
- Baime Tulthermo Baime Tulthermo
- Examples of application of such an overheat prevention device (bimetal thermo) 50 are known as disclosed in, for example, Japanese Patent Application Laid-Open Nos. 2000-39144 and 11-108417.
- the overheat prevention device (bimetal thermo) 50 is activated. From the viewpoint of ensuring the safety, the operation of the compressor 25 is stopped. That is, in the above-described conventional water heater, the power source is connected to the power unit 52 of the heat pump unit 1 via the tank p plate 51 of the tank unit 11, as shown in FIG. Power to the heat pump control unit 53.
- the heat pump control unit 33 is for controlling the drive frequency of the compressor 25 and the opening of the electric expansion valve 27. Then, by the operation of the bimetal thermo 50, the power supply line 54 between the tank P plate 51 and the power supply unit 52 is cut off.
- Reference numeral 55 denotes a tank control unit.
- the overheat prevention device (bimetal thermo) 50 is very expensive, and the actual situation is that it does not fully meet the demand for equipment cost reduction.
- an object of the present invention is to provide a water heater that can suppress the occurrence of various problems caused by an abnormal temperature rise in hot water in a hot water storage tank as in the prior art, and can be configured at low cost.
- An object of the present invention is to provide an abnormality detection device.
- an abnormality detection apparatus for a hot water heater of the present invention includes:
- a heat pump unit for heating hot water for heating hot water
- a hot water storage tank for storing heated hot water, a tank unit having a tank temperature detecting unit for detecting the hot water temperature of the hot water storage tank, and a tank control unit;
- the tank control unit of the tank unit controls an energization switching unit that switches permission and non-permission of power supply from the tank unit to the heat pump unit.
- the energization switching unit is controlled to stop energization to the heat pump unit, and the hot water temperature of the hot water storage tank detected by the tank temperature detecting unit is a reference.
- the energization switching unit is controlled so as to stop the power supply from the tank unit to the heat pump unit when the temperature becomes higher than the temperature.
- the heat pump operation stop command is a standby power saving command for reducing standby power of the heat pump unit.
- the tank temperature detection unit also functions as a remaining hot water amount detector of the hot water storage tank.
- the above hot water supply system is composed of a water heat exchanger heated by the operation of the compressor and the inflowing water of the incoming piping power connected to the bottom of the hot water storage tank by the above mentioned hydrothermal exchange ⁇
- the hydrothermal power is provided with a control system that controls at least one of the operation of the compressor and the amount of circulating hot water in the circulation path based on the temperature of the hot water discharged, and the tank temperature detection unit further comprises the hydrothermal power. It also functions as a tapping temperature detection unit that detects the tapping temperature that is discharged.
- the abnormality detection device for a hot water heater of the present invention it is not necessary to use an expensive overheat prevention device (bimetal thermo) as in the prior art, and it is an inexpensive temperature detection means.
- an expensive overheat prevention device for example, using a temperature thermistor, safety can be ensured as in the past, so that a significant cost reduction of the water heater can be achieved.
- FIG. 1 is a simplified circuit diagram of a water heater equipped with an abnormality detection device of the present invention.
- FIG. 2 is a simplified block diagram of a control unit of the abnormality detection device for the hot water heater.
- FIG. 3 is a simplified block diagram of a control unit of an abnormality detection device for a water heater in a conventional example.
- FIG. 1 is a simplified circuit diagram of a water heater (heat pump type water heater). Since this is the same as the description related to the conventional example, the description thereof is omitted.
- FIG. 2 1 is a heat pump unit and 2 is a tank unit. These are the same as those described with reference to FIG.
- Reference numeral 41 denotes a heat pump control unit
- 42 denotes a tank control unit.
- a kitchen remote control (main remote control) 43 and a bath remote control (sub remote control) 44 are connected to the tank control unit 42.
- the tank control unit 42 is provided on the tank P plate 45 as in the prior art.
- the power supply lines 46 and 47 are connected to the power supply unit 48 of the heat pump unit 1 through the tank P plate 45.
- the power line 46 is provided with a relay 49 in the tank P plate 45. This relay 49 is a force that functions as an energization switching unit, and its function will be described later.
- a tank temperature thermistor 40 serving as a tank temperature detecting unit for detecting the hot water temperature of the hot water storage tank 3 is attached to the top of the hot water storage tank 3.
- the heat pump control unit 41 and the tank control unit 42 constitute a control system.
- An operation stop command can be output from the kitchen remote controller 43 and the bath remote controller 44 to the tank controller 42. This is used when the heat pump unit 1 is to be stopped during this period in order to save standby power when the user is away for several days.
- the tank control unit 42 turns off the relay 49 of the power supply line 46 to the heat pump unit 1. Stop power supply. This embodiment uses such a function.
- the detection tank in the above tank temperature thermistor 40 When the hot water temperature rises to an abnormal temperature, for example, exceeding 95 ° C, the tank temperature thermistor 40 outputs an abnormal temperature increase output to the tank control unit 42, and the tank control unit 42 operates the relay 49. The power supply is stopped.
- the output of the tank temperature thermistor 40 is directly output to the tank control unit 42, but this is output to the heat pump control unit 41 and then to the tank control unit 42.
- a command output for turning off the relay 49 may be output.
- the heat pump control unit 41 may receive an abnormal temperature rise output from the tank temperature thermistor 40 and output a stop command for the power supply unit 48.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007800081454A CN101395432B (zh) | 2006-04-19 | 2007-04-17 | 热水供应器的异常检测装置 |
| EP07741772.3A EP2009366B1 (en) | 2006-04-19 | 2007-04-17 | Hot water supplier having a malfunction detection device |
| US12/297,810 US8365686B2 (en) | 2006-04-19 | 2007-04-17 | Malfunction detection device for hot water supplier |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-115125 | 2006-04-19 | ||
| JP2006115125A JP4120683B2 (ja) | 2006-04-19 | 2006-04-19 | 給湯機の異常検出装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007123117A1 true WO2007123117A1 (ja) | 2007-11-01 |
Family
ID=38625017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2007/058336 Ceased WO2007123117A1 (ja) | 2006-04-19 | 2007-04-17 | 給湯機の異常検出装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8365686B2 (ja) |
| EP (1) | EP2009366B1 (ja) |
| JP (1) | JP4120683B2 (ja) |
| CN (1) | CN101395432B (ja) |
| WO (1) | WO2007123117A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009264707A (ja) * | 2008-04-30 | 2009-11-12 | Noritz Corp | 給湯システム |
| JP2016099072A (ja) * | 2014-11-25 | 2016-05-30 | 株式会社ノーリツ | ヒートポンプ給湯システム |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8385729B2 (en) | 2009-09-08 | 2013-02-26 | Rheem Manufacturing Company | Heat pump water heater and associated control system |
| EP2899475A4 (en) * | 2012-09-20 | 2015-09-23 | Panasonic Ip Man Co Ltd | COGENERATION SYSTEM AND METHOD OF OPERATING THE COGENERATION SYSTEM |
| JP6109119B2 (ja) * | 2014-07-10 | 2017-04-05 | 三菱電機株式会社 | ヒートポンプ給湯システム |
| CN105258331B (zh) * | 2015-10-30 | 2017-04-12 | 广东美的暖通设备有限公司 | 一种热泵热水机的防冻结控制方法及系统 |
| CN107166736A (zh) * | 2017-05-25 | 2017-09-15 | 广东万家乐燃气具有限公司 | 一种电热水器低功耗检测显示系统及方法 |
| US11287144B2 (en) | 2019-07-31 | 2022-03-29 | Rheem Manufacturing Company | Water heaters with real-time hot water supply determination |
| CN111928488A (zh) * | 2020-08-04 | 2020-11-13 | 合肥美的暖通设备有限公司 | 故障检测方法、热泵制热设备、故障检测装置和存储介质 |
| CN114112469A (zh) * | 2021-11-29 | 2022-03-01 | 广东纽恩泰新能源科技发展有限公司 | 一种空气源热泵测试系统 |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11108417A (ja) | 1997-10-09 | 1999-04-23 | Toshiba Corp | 空気調和機 |
| JP2000039144A (ja) | 1998-07-27 | 2000-02-08 | Sanyo Electric Co Ltd | 燃焼機器 |
| JP2002168524A (ja) * | 2000-12-01 | 2002-06-14 | Denso Corp | 給湯装置 |
| JP2003222406A (ja) | 2002-01-30 | 2003-08-08 | Daikin Ind Ltd | 給湯機の異常検出装置 |
| JP2003254607A (ja) * | 2002-03-01 | 2003-09-10 | Matsushita Electric Ind Co Ltd | ヒートポンプ給湯機 |
| JP2004190926A (ja) * | 2002-12-10 | 2004-07-08 | Noritz Corp | 給湯装置 |
| JP2005114332A (ja) * | 2003-10-09 | 2005-04-28 | Eruson Kk | 省エネ型電気給湯設備 |
| JP2005283024A (ja) * | 2004-03-30 | 2005-10-13 | Toto Ltd | 貯湯式電気温水器 |
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| US3730265A (en) * | 1970-10-15 | 1973-05-01 | Hooker Chemical Corp | Shut-down system for heat storage exchange apparatus |
| JPH01208646A (ja) * | 1988-02-15 | 1989-08-22 | Sanden Corp | 冷暖房給湯システムの制御装置 |
| US5279319A (en) * | 1991-09-25 | 1994-01-18 | Fidelman George R | Water pressure relief method and system for water heaters |
| US5465588A (en) * | 1994-06-01 | 1995-11-14 | Hydro Delta Corporation | Multi-function self-contained heat pump system with microprocessor control |
| AU719740B2 (en) * | 1996-03-29 | 2000-05-18 | Waterfurnace International, Inc. | Microprocessor control for a heat pump water heater |
| US6059195A (en) * | 1998-01-23 | 2000-05-09 | Tridelta Industries, Inc. | Integrated appliance control system |
| JP3737381B2 (ja) * | 2000-06-05 | 2006-01-18 | 株式会社デンソー | 給湯装置 |
| US6728600B1 (en) * | 2000-06-08 | 2004-04-27 | Honeywell International Inc. | Distributed appliance control system having fault isolation |
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| DE10345300B4 (de) * | 2003-09-30 | 2006-09-07 | Stiebel Eltron Gmbh & Co. Kg | Regelgerät, insbesondere für eine Wärmepumpe |
| US7024877B2 (en) * | 2003-12-01 | 2006-04-11 | Tecumseh Products Company | Water heating system |
| US7225629B2 (en) * | 2004-01-20 | 2007-06-05 | Carrier Corporation | Energy-efficient heat pump water heater |
| WO2007004460A1 (ja) * | 2005-06-30 | 2007-01-11 | Toshiba Carrier Corporation | ヒートポンプ式給湯装置 |
| NL1029676C2 (nl) * | 2005-08-03 | 2007-02-06 | Eco Heating Systems B V | Inrichting voor het afgeven van een verwarmd fluïdum en verwarminrichting daarvoor. |
| IL176460A (en) * | 2006-06-21 | 2010-11-30 | Shmuel Ben Ishai | Water heating and storage system |
| US8008603B2 (en) * | 2007-08-31 | 2011-08-30 | Mackenzie Bruce G | Boiler protection apparatus and method |
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2006
- 2006-04-19 JP JP2006115125A patent/JP4120683B2/ja not_active Expired - Lifetime
-
2007
- 2007-04-17 US US12/297,810 patent/US8365686B2/en not_active Expired - Fee Related
- 2007-04-17 WO PCT/JP2007/058336 patent/WO2007123117A1/ja not_active Ceased
- 2007-04-17 EP EP07741772.3A patent/EP2009366B1/en not_active Not-in-force
- 2007-04-17 CN CN2007800081454A patent/CN101395432B/zh not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11108417A (ja) | 1997-10-09 | 1999-04-23 | Toshiba Corp | 空気調和機 |
| JP2000039144A (ja) | 1998-07-27 | 2000-02-08 | Sanyo Electric Co Ltd | 燃焼機器 |
| JP2002168524A (ja) * | 2000-12-01 | 2002-06-14 | Denso Corp | 給湯装置 |
| JP2003222406A (ja) | 2002-01-30 | 2003-08-08 | Daikin Ind Ltd | 給湯機の異常検出装置 |
| JP2003254607A (ja) * | 2002-03-01 | 2003-09-10 | Matsushita Electric Ind Co Ltd | ヒートポンプ給湯機 |
| JP2004190926A (ja) * | 2002-12-10 | 2004-07-08 | Noritz Corp | 給湯装置 |
| JP2005114332A (ja) * | 2003-10-09 | 2005-04-28 | Eruson Kk | 省エネ型電気給湯設備 |
| JP2005283024A (ja) * | 2004-03-30 | 2005-10-13 | Toto Ltd | 貯湯式電気温水器 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009264707A (ja) * | 2008-04-30 | 2009-11-12 | Noritz Corp | 給湯システム |
| JP2016099072A (ja) * | 2014-11-25 | 2016-05-30 | 株式会社ノーリツ | ヒートポンプ給湯システム |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2009366B1 (en) | 2017-08-16 |
| JP4120683B2 (ja) | 2008-07-16 |
| CN101395432A (zh) | 2009-03-25 |
| US20090084329A1 (en) | 2009-04-02 |
| CN101395432B (zh) | 2011-04-13 |
| US8365686B2 (en) | 2013-02-05 |
| EP2009366A4 (en) | 2015-11-11 |
| JP2007285634A (ja) | 2007-11-01 |
| EP2009366A1 (en) | 2008-12-31 |
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