CN102445027A - Double-water tank hot water system of heat-recovery air-cooling heat pump unit - Google Patents
Double-water tank hot water system of heat-recovery air-cooling heat pump unit Download PDFInfo
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- CN102445027A CN102445027A CN2011104588589A CN201110458858A CN102445027A CN 102445027 A CN102445027 A CN 102445027A CN 2011104588589 A CN2011104588589 A CN 2011104588589A CN 201110458858 A CN201110458858 A CN 201110458858A CN 102445027 A CN102445027 A CN 102445027A
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- 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
- F24D17/0026—Domestic hot-water supply systems with conventional heating means
- F24D17/0031—Domestic hot-water supply systems with conventional heating means with accumulation of the heated water
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention relates to a double-water tank hot water system of a heat-recovery air-cooling heat pump unit. The system comprises a control device, a refrigeration host machine, first and second electromagnetic three-way valves, first and second electromagnetic two-way valves, an operating water tank, a heat preservation water tank, first, second and third temperature sensors, a filter, first and second water pumps, and first, second and third gate valves, wherein the operating water tank is provided with F1, F2 and F3 water level switches respectively from bottom to top; the heat preservation water tank is provided with F4 and F5 water level switches respectively from bottom to top; the first temperature sensor is arranged in the operating water tank, the second temperature sensor is arranged in the heat preservation water tank, and the third temperature sensor is arranged on the pipeline between the second electromagnetic two-way valve and a hot water pipe meshwork; and the second gate valve is arranged at the bottom of the operating water tank, and the third gate valve is arranged at the bottom of the heat preservation water tank. By adopting the first and second electromagnetic three-way valves and the multiple gate valves to realize switching between pipelines of the water system, the double-water tank hot water system of the heat-recovery air-cooling heat pump unit provided by the invention has the advantages that the unit has low power consumption and high hot water utilization rate, and the effect of constant water temperature when a customer uses the water is achieved.
Description
Technical field
The present invention relates to air-conditioning technical field, particularly relate to a kind of two water tank hot-water heating systems of recovery type heat Air-Cooled Heat Pump Unit.
Background technology
Along with the continuous increase of China's economic level, and the improving constantly of living standard, people also constantly improve the demand of air-conditioning.Not only need air-conditioning to freeze but also require it to heat, even can comprise the function that heats hydrophone, thereby realize the purpose of multi-functional unification.
The hot-water heating system of source pump of the prior art adopts single water tank circulation heating; The hydronic source pump of this single water tank, need through the water pump forced circulation with thermal energy transfer in hot water storage tank, in case of the water use peak period perhaps to winter; The effective heat supply water yield of system often can't reach designing requirement; Can not satisfy client's water demand, objectively will cause the phenomenon of " air source water heater has problem ", instant heating poor performance and hot and cold water directly mixing cause water temperature low suddenly high suddenly.
Therefore; Needing badly provides a kind of and possesses that the multi-period heat pump water system that the constant water warm water is provided solves because hot and cold water directly mixes the water temperature problem fluctuated that causes; Can also reduce simultaneously the operating temperature point of unit; Reduce power consumption, the technology of two water tank hot-water heating systems of the recovery type heat Air-Cooled Heat Pump Unit of raising rate of thermal water utilization seems particularly important.
Summary of the invention
The objective of the invention is to avoid weak point of the prior art and provide a kind of and possess that the multi-period heat pump water system that the constant water warm water is provided solves because hot and cold water directly mixes the water temperature problem fluctuated that causes; Can also reduce simultaneously the operating temperature point of unit; Reduce power consumption, improve two water tank hot-water heating systems of the recovery type heat Air-Cooled Heat Pump Unit of rate of thermal water utilization.
The object of the invention is realized through following technical scheme:
A kind of two water tank hot-water heating systems of recovery type heat Air-Cooled Heat Pump Unit are provided, have included control device, refrigeration host computer, first three-way solenoid valve, second three-way solenoid valve, the first electromagnetism two-port valve, the second electromagnetism two-port valve, operating water tank, attemperater, first temperature sensor, second temperature sensor, three-temperature sensor, filter, first water pump, second water pump, first gate valve, second gate valve and the 3rd gate valve;
Said operating water tank is respectively arranged with F1 water level switch, F2 water level switch and F3 water level switch from bottom to up;
Said attemperater is respectively arranged with F4 water level switch and F5 water level switch from bottom to up;
Said first temperature sensor is arranged at said operating water tank, and said second temperature sensor is arranged at said attemperater, and said three-temperature sensor is arranged at the pipeline between said second electromagnetism two-port valve and the hot water pipe net;
Said second gate valve is arranged at the bottom of said operating water tank, and said the 3rd gate valve is arranged at the bottom of said attemperater;
1 end of said refrigeration host computer one side is connected with the A end of said first gate valve and said first three-way solenoid valve respectively; The C end of said first three-way solenoid valve is connected with the water inlet of said operating water tank; The benefit cold water outlet of said operating water tank is connected with the said first electromagnetism two-port valve; The B end of said first three-way solenoid valve is connected with first water inlet of said attemperater; Second water inlet of said attemperater is connected with an end of the said second electromagnetism two-port valve, and the other end of the said second electromagnetism two-port valve is connected with an end of hot water pipe net, and the other end of said hot water pipe net is connected with an end of said second water pump; The other end of said second water pump is connected with second delivery port of said attemperater; First delivery port of said attemperater is connected with the B of said second three-way solenoid valve end, and the A end of said second three-way solenoid valve is connected with the delivery port of said operating water tank, and the C end of said second three-way solenoid valve is connected with an end of said filter; The other end of said filter is connected with an end of said first water pump, and the other end of said first water pump is connected with 2 ends of said refrigeration host computer;
Another side joint air-conditioner water system of said refrigeration host computer;
Said refrigeration host computer, said first three-way solenoid valve, said operating water tank, said second three-way solenoid valve, said filter, said first water pump are formed hot water cyclesystem; Said operating water tank and said attemperater are formed the water storage system of water system; Said first electromagnetism two-port valve and said operating water tank are formed water charging system; Said second water pump, said three-temperature sensor, the said second electromagnetism two-port valve and said attemperater are formed the water system of water system; Said refrigeration host computer and said first gate valve, said operating water tank and said second gate valve, said attemperater and said the 3rd gate valve are formed purging system separately respectively.
Wherein, said filter is a y-type filter.
Wherein, said first temperature sensor is arranged at the bottom of said operating water tank.
Wherein, said second temperature sensor is arranged at the bottom of said attemperater.
Wherein, the pipeline between said second electromagnetism two-port valve and the hot water pipe net is life hot water return pipe road.
Beneficial effect of the present invention:
A kind of two water tank hot-water heating systems of recovery type heat Air-Cooled Heat Pump Unit include control device, refrigeration host computer, first three-way solenoid valve, second three-way solenoid valve, the first electromagnetism two-port valve, the second electromagnetism two-port valve, operating water tank, attemperater, first temperature sensor, second temperature sensor, three-temperature sensor, filter, first water pump, second water pump, first gate valve, second gate valve and the 3rd gate valve; Said operating water tank is respectively arranged with F1 water level switch, F2 water level switch and F3 water level switch from bottom to up; Said attemperater is respectively arranged with F4 water level switch and F5 water level switch from bottom to up; Said first temperature sensor is arranged at said operating water tank, and said second temperature sensor is arranged at said attemperater, and said three-temperature sensor is arranged at the pipeline between said second electromagnetism two-port valve and the hot water pipe net; Said second gate valve is arranged at the bottom of said operating water tank, and said the 3rd gate valve is arranged at the bottom of said attemperater; 1 end of said refrigeration host computer one side is connected with the A end of said first gate valve and said first three-way solenoid valve respectively; The C end of said first three-way solenoid valve is connected with the water inlet of said operating water tank; The benefit cold water outlet of said operating water tank is connected with the said first electromagnetism two-port valve; The B end of said first three-way solenoid valve is connected with first water inlet of said attemperater; Second water inlet of said attemperater is connected with an end of the said second electromagnetism two-port valve, and the other end of the said second electromagnetism two-port valve is connected with an end of hot water pipe net, and the other end of said hot water pipe net is connected with an end of said second water pump; The other end of said second water pump is connected with second delivery port of said attemperater; First delivery port of said attemperater is connected with the B of said second three-way solenoid valve end, and the A end of said second three-way solenoid valve is connected with the delivery port of said operating water tank, and the C end of said second three-way solenoid valve is connected with an end of said filter; The other end of said filter is connected with an end of said first water pump, and the other end of said first water pump is connected with 2 ends of said refrigeration host computer; Another side joint air-conditioner water system of said refrigeration host computer; Said refrigeration host computer, said first three-way solenoid valve, said operating water tank, said second three-way solenoid valve, said filter, said first water pump are formed hot water cyclesystem; Said operating water tank and said attemperater are formed the water storage system of water system; Said first electromagnetism two-port valve and said operating water tank are formed water charging system; Said second water pump, said three-temperature sensor, the said second electromagnetism two-port valve and said attemperater are formed the water system of water system; Said refrigeration host computer and said first gate valve, said operating water tank and said second gate valve, said attemperater and said the 3rd gate valve are formed purging system separately respectively.
The present invention realizes the switching between the water system pipeline through the mode that adopts first three-way solenoid valve, second three-way solenoid valve and a plurality of gate valves; Make recovery type heat Air-Cooled Heat Pump Unit water system according to the different needs different water tank of flowing through, form two water tank hot-water heating systems of recovery type heat source pump.It is low in energy consumption to have unit, and rate of thermal water utilization is high, the constant effect of water temperature in the time of can also reaching client's water simultaneously.
Description of drawings
Utilize accompanying drawing that invention is described further, but the embodiment in the accompanying drawing do not constitute any restriction of the present invention,, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to following accompanying drawing for those of ordinary skill in the art.
Fig. 1 is the structural representation of two water tank hot-water heating systems of a kind of recovery type heat Air-Cooled Heat Pump Unit of the present invention.
In Fig. 1, include:
1---refrigeration host computer,
2---operating water tank,
3---first three-way solenoid valve,
4---the first electromagnetism two-port valve,
5---attemperater, 51---first delivery port, 52---second delivery port, 53---first water inlet, 54---, second water inlet,
6---the second electromagnetism two-port valve,
7---three-temperature sensor,
8---the F5 water level switch,
9---the F4 water level switch,
10---second water pump,
11---the 3rd gate valve,
12---second temperature sensor,
13---second three-way solenoid valve,
14---second gate valve,
15---first temperature sensor,
16---first gate valve,
17---filter,
18---first water pump,
19---the F3 water level switch,
20---the F2 water level switch,
21---the F1 water level switch,
22---hot water pipe net.
The specific embodiment
In conjunction with following examples the present invention is further described.
The specific embodiment of two water tank hot-water heating systems of a kind of recovery type heat Air-Cooled Heat Pump Unit of the present invention; As shown in Figure 1, include control device, refrigeration host computer 1, first three-way solenoid valve 3, second three-way solenoid valve 13, the first electromagnetism two-port valve 4, the second electromagnetism two-port valve 6, operating water tank 2, attemperater 5, first temperature sensor 15, second temperature sensor 12, three-temperature sensor 7, filter 17, first water pump 18, second water pump 10, first gate valve 16, second gate valve 14 and the 3rd gate valve 11.
Said operating water tank 2 is respectively arranged with F1 water level switch 21, F2 water level switch 20 and F3 water level switch 19 from bottom to up.
Said attemperater 5 is respectively arranged with F4 water level switch 9 and F5 water level switch 8 from bottom to up.
Said first temperature sensor 15 is arranged at said operating water tank 2, and said second temperature sensor 12 is arranged at said attemperater 5, and said three-temperature sensor 7 is arranged at the pipeline between said second electromagnetism two-port valve 6 and the hot water pipe net 22.Through the control of 7 pairs of hot water pipe nets 22 of three-temperature sensor, the water that can prevent to rest on the hot water pipe net 22 keeps high relatively temperature always, can avoid the client using hot water during the initial stage, and the colder situation of water occurs.
Said second gate valve 14 is arranged at the bottom of said operating water tank 2, and said the 3rd gate valve 11 is arranged at the bottom of said attemperater 5.
1 end of said refrigeration host computer 1 one sides is connected with the A end of said first gate valve 16 and said first three-way solenoid valve 3 respectively; The C end of said first three-way solenoid valve 3 is connected with the water inlet of said operating water tank 2; The benefit cold water outlet of said operating water tank 2 is connected with the said first electromagnetism two-port valve 4; The B end of said first three-way solenoid valve 3 is connected with first water inlet 53 of said attemperater 5; Second water inlet 54 of said attemperater 5 is connected with an end of the said second electromagnetism two-port valve 4; The other end of the said second electromagnetism two-port valve 4 is connected with an end of hot water pipe net 22; The other end of said hot water pipe net 22 is connected with an end of said second water pump 10, and the other end of said second water pump 10 is connected with second delivery port 52 of said attemperater 5, and first delivery port 51 of said attemperater 5 is connected with the B of said second three-way solenoid valve 13 end; The A end of said second three-way solenoid valve 13 is connected with the delivery port of said operating water tank 2; The C end of said second three-way solenoid valve 13 is connected with an end of said filter 17, and the other end of said filter 17 is connected with an end of said first water pump 18, and the other end of said first water pump 18 is connected with 2 ends of said refrigeration host computer 1.
Said refrigeration host computer 1 another side joint air-conditioner water system.
Said refrigeration host computer 1, said first three-way solenoid valve 3, said operating water tank 2, said second three-way solenoid valve 13, said filter 17, said first water pump 18 are formed hot water cyclesystems; Said operating water tank 2 and said attemperater 5 are formed the water storage system of water systems; The said first electromagnetism two-port valve 4 is formed water charging system with said operating water tank 2; Said second water pump 10, said three-temperature sensor 7, the said second electromagnetism two-port valve 6 and said attemperater 5 are formed the water system of water systems; Said refrigeration host computer 1 and said first gate valve 16, said operating water tank 2 are formed purging system separately with said second gate valve 14, said attemperater 5 respectively with said the 3rd gate valve 11.
Concrete, said filter 17 is a y-type filter.
Concrete, said first temperature sensor 15 is arranged at the bottom of said operating water tank 2.
Concrete, said second temperature sensor 12 is arranged at the bottom of said attemperater 5.
Concrete, the pipeline between said second electromagnetism two-port valve 6 and the hot water pipe net 22 is life hot water return pipe road.
The present invention realizes the switching between the water system pipeline through the mode that adopts first three-way solenoid valve 3, second three-way solenoid valve 13 and a plurality of gate valves; Make recovery type heat Air-Cooled Heat Pump Unit water system according to the different needs different water tank of flowing through, thereby form the system of a kind of pair of water tank control.Refrigeration host computer 1 of the present invention when realizing round-the-clock supply constant water warm water, has also reduced the power consumption of unit through all-around intelligent control, and improves the utilization rate of hot water.The employing of first three-way solenoid valve 3 and second three-way solenoid valve 13 is than using the electromagnetism two-port valve, more convenient control and saving cost.
The workflow of two water tank hot-water heating systems of a kind of recovery type heat Air-Cooled Heat Pump Unit of the present invention
:
When refrigeration host computer 1 is switched on first, the F4 water level switch 9 in the attemperater 5 is detected, if F4 water level switch 9 breaks off; Then the F2 water level switch 20 in the operating water tank 2 is detected,, then open 4 pairs of operating water tanks of the first electromagnetism two-port valve 2 and carry out cold water and replenish if F2 water level switch 20 breaks off; Water level up to operating water tank 2 is higher than the F3 water level; F3 water level switch 19 closures are just closed the first electromagnetism two-port valve 4, stop operating water tank 2 moisturizings.
When the temperature that detects when first temperature sensor 15 of operating water tank 2 is lower than default value, open first three-way solenoid valve 3 and second three-way solenoid valve 13, make that the A of first three-way solenoid valve 3, C end are communicated with, behind the A of second three-way solenoid valve 13, the connection of C end; Move 18 a period of times of first water pump; After guaranteeing that unit internal water system system has enough flows, start 1 pair of operating water tank 2 of refrigeration host computer and heat, when the temperature of first temperature sensor, 15 detections is higher than default value; Closed first three-way solenoid valve 3 and second three-way solenoid valve 13; First water pump 18 is out of service, and refrigeration host computer 1 is in holding state, stops operating water tank 2 heating.
When attemperater 5 water levels are lower than the F5 water level; F5 water level switch 8 breaks off; Make its A, B hold connection through regulating first three-way solenoid valve 3, the operation of first water pump 18, the hot water of operating water tank 2 is transported to attemperater 5 behind the A, B end of the A through second three-way solenoid valve 13, C end, filter 17, first water pump 18, refrigeration host computer 1, first three-way solenoid valve 3 successively; Realization surpasses the F5 water level to the moisturizing of attemperater 5 up to attemperater 5 water levels.As be checked through attemperater 5 water levels and be higher than the F5 water level, then attemperater 5 is not carried out moisturizing.
To attemperater 5 moisturizings the time, if being lower than the F1 water level, the water level of operating water tank 2 cause F1 water level switch 21 to break off, then open the first electromagnetism two- port valve 4 and 16 pairs of operating water tanks 2 of first gate valve are mended cold water.Simultaneously; When first temperature sensor, 15 temperature sensors of operating water tank 2 are lower than setting value; Opening first three-way solenoid valve 3 makes its A, the connection of C end, second three-way solenoid valve 13 make its A, C hold connection; The running refrigerating main frame 1 and first water pump 18 are realized the heating process to operating water tank 2, till first temperature sensor, 15 temperature are higher than setting value.
If attemperater 5 does not use for a long time; When second temperature sensor, 12 temperature of attemperater 5 are lower than setting value; Regulate successively then that second three-way solenoid valve 13 makes that its B, C termination are logical, operation first water pump 18, running refrigerating main frame 1, regulate first three-way solenoid valve 3 and make its A, B termination logical, heat by 1 pair of attemperater 5 of refrigeration host computer.
For water system, when three-temperature sensor 7 temperature sensors are lower than setting value, open the second electromagnetism two-port valve 6 successively; Second water pump 10 circulates the water of attemperater 5, when three-temperature sensor 7 temperature sensors are higher than setting value in hot water pipe net 22; Second water pump 10 is out of service; Close the second electromagnetism two-port valve 6, the water temperature of hot water pipe net 22 is remained in the uniform temperature, avoiding the client is the phenomenon of cold water during water at the beginning.
Should be noted that at last; Above embodiment is only in order to explain technical scheme of the present invention; But not to the restriction of protection domain of the present invention, although with reference to preferred embodiment the present invention has been done explanation at length, those of ordinary skill in the art is to be understood that; Can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the essence and the scope of technical scheme of the present invention.
Claims (5)
1. two water tank hot-water heating systems of a recovery type heat Air-Cooled Heat Pump Unit is characterized in that: include control device, refrigeration host computer, first three-way solenoid valve, second three-way solenoid valve, the first electromagnetism two-port valve, the second electromagnetism two-port valve, operating water tank, attemperater, first temperature sensor, second temperature sensor, three-temperature sensor, filter, first water pump, second water pump, first gate valve, second gate valve and the 3rd gate valve;
Said operating water tank is respectively arranged with F1 water level switch, F2 water level switch and F3 water level switch from bottom to up;
Said attemperater is respectively arranged with F4 water level switch and F5 water level switch from bottom to up;
Said first temperature sensor is arranged at said operating water tank, and said second temperature sensor is arranged at said attemperater, and said three-temperature sensor is arranged at the pipeline between said second electromagnetism two-port valve and the hot water pipe net;
Said second gate valve is arranged at the bottom of said operating water tank, and said the 3rd gate valve is arranged at the bottom of said attemperater;
1 end of said refrigeration host computer one side is connected with the A end of said first gate valve and said first three-way solenoid valve respectively; The C end of said first three-way solenoid valve is connected with the water inlet of said operating water tank; The benefit cold water outlet of said operating water tank is connected with the said first electromagnetism two-port valve; The B end of said first three-way solenoid valve is connected with first water inlet of said attemperater; Second water inlet of said attemperater is connected with an end of the said second electromagnetism two-port valve, and the other end of the said second electromagnetism two-port valve is connected with an end of hot water pipe net, and the other end of said hot water pipe net is connected with an end of said second water pump; The other end of said second water pump is connected with second delivery port of said attemperater; First delivery port of said attemperater is connected with the B of said second three-way solenoid valve end, and the A end of said second three-way solenoid valve is connected with the delivery port of said operating water tank, and the C end of said second three-way solenoid valve is connected with an end of said filter; The other end of said filter is connected with an end of said first water pump, and the other end of said first water pump is connected with 2 ends of said refrigeration host computer;
Another side joint air-conditioner water system of said refrigeration host computer;
Said refrigeration host computer, said first three-way solenoid valve, said operating water tank, said second three-way solenoid valve, said filter, said first water pump are formed hot water cyclesystem; Said operating water tank and said attemperater are formed the water storage system of water system; Said first electromagnetism two-port valve and said operating water tank are formed water charging system; Said second water pump, said three-temperature sensor, the said second electromagnetism two-port valve and said attemperater are formed the water system of water system; Said refrigeration host computer and said first gate valve, said operating water tank and said second gate valve, said attemperater and said the 3rd gate valve are formed purging system separately respectively.
2. two water tank hot-water heating systems of a kind of recovery type heat Air-Cooled Heat Pump Unit according to claim 1 is characterized in that: said filter is a y-type filter.
3. two water tank hot-water heating systems of a kind of recovery type heat Air-Cooled Heat Pump Unit according to claim 1, it is characterized in that: said first temperature sensor is arranged at the bottom of said operating water tank.
4. two water tank hot-water heating systems of a kind of recovery type heat Air-Cooled Heat Pump Unit according to claim 1, it is characterized in that: said second temperature sensor is arranged at the bottom of said attemperater.
5. two water tank hot-water heating systems of a kind of recovery type heat Air-Cooled Heat Pump Unit according to claim 1 is characterized in that: the pipeline between said second electromagnetism two-port valve and the hot water pipe net is life hot water return pipe road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104588589A CN102445027A (en) | 2011-12-31 | 2011-12-31 | Double-water tank hot water system of heat-recovery air-cooling heat pump unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104588589A CN102445027A (en) | 2011-12-31 | 2011-12-31 | Double-water tank hot water system of heat-recovery air-cooling heat pump unit |
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| CN102445027A true CN102445027A (en) | 2012-05-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102705861A (en) * | 2012-06-15 | 2012-10-03 | 上海交通大学 | Air pre-heater system for fuel coal industrial boiler |
| CN103353141A (en) * | 2013-08-08 | 2013-10-16 | 罗日良 | Hot water supply system |
| CN103994567A (en) * | 2013-02-14 | 2014-08-20 | 松下电器产业株式会社 | Water heater capable of storing heat water |
| CN107631896A (en) * | 2017-09-26 | 2018-01-26 | 广东纽恩泰新能源科技发展有限公司 | Recovery type heat commodity inspection device for water heater |
| CN111609552A (en) * | 2020-04-23 | 2020-09-01 | 青岛海尔空调电子有限公司 | Hot water unit |
| CN111609561A (en) * | 2020-04-23 | 2020-09-01 | 青岛海尔空调电子有限公司 | Control method of hot water unit |
| CN113237228A (en) * | 2021-03-30 | 2021-08-10 | 浙江中广电器股份有限公司 | Heat pump water heater and heating operation control method thereof |
| CN114234446A (en) * | 2021-12-21 | 2022-03-25 | 清农集团有限公司 | Slaughter scalding heating system |
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Application publication date: 20120509 |