CN113251657A - Heat pump water heater and control method thereof - Google Patents

Heat pump water heater and control method thereof Download PDF

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Publication number
CN113251657A
CN113251657A CN202010088780.5A CN202010088780A CN113251657A CN 113251657 A CN113251657 A CN 113251657A CN 202010088780 A CN202010088780 A CN 202010088780A CN 113251657 A CN113251657 A CN 113251657A
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CN
China
Prior art keywords
heat pump
water heater
pump water
heat conductor
end heat
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.)
Pending
Application number
CN202010088780.5A
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Chinese (zh)
Inventor
魏爱国
康乐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Economic And Technology Development District Haier Water Heater Co ltd
Haier Smart Home Co Ltd
Qingdao Haier New Energy Electric Appliance Co Ltd
Original Assignee
Qingdao Economic And Technology Development District Haier Water Heater Co ltd
Haier Smart Home Co Ltd
Qingdao Haier New Energy Electric Appliance Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Economic And Technology Development District Haier Water Heater Co ltd, Haier Smart Home Co Ltd, Qingdao Haier New Energy Electric Appliance Co Ltd filed Critical Qingdao Economic And Technology Development District Haier Water Heater Co ltd
Priority to CN202010088780.5A priority Critical patent/CN113251657A/en
Publication of CN113251657A publication Critical patent/CN113251657A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H4/00Fluid heaters characterised by the use of heat pumps
    • F24H4/02Water heaters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/20Arrangement or mounting of control or safety devices
    • F24H9/2007Arrangement or mounting of control or safety devices for water heaters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/32Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed

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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)
  • Power Engineering (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The invention discloses a heat pump water heater and a control method thereof. The heat pump water heater includes: an electric control board; the heat pump unit comprises a shell, and a compressor, an evaporator, a throttling device and a fan which are arranged in the shell; the water tank comprises a tank shell, and an inner container and a condenser which are arranged in the tank shell; the thermoelectric power generation module comprises a thermoelectric power generation component, a cold end heat conductor and a hot end heat conductor, wherein the thermoelectric power generation component is arranged between the cold end heat conductor and the hot end heat conductor, the cold end heat conductor is used for conducting cold energy generated by the heat pump water heater, and the hot end heat conductor is used for conducting heat generated by the heat pump water heater; the compressor, the evaporator, the throttling device and the condenser are connected together to form a refrigerant loop, and the compressor, the fan and the thermoelectric generation component are respectively and electrically connected with the electric control board. The electric control board of the heat pump water heater is supplied with power in an auxiliary mode by utilizing temperature difference power generation, so that the energy consumption of the heat pump water heater is reduced.

Description

Heat pump water heater and control method thereof
Technical Field
The invention relates to the technical field of household appliances, in particular to a heat pump water heater.
Background
At present, the water heater is the domestic appliance commonly used in people's daily life, and the water heater divide into: electric water heater, heat pump water heater and solar water heater.
The heat pump water heater generally comprises a heat pump unit and a water tank, wherein the heat pump unit generally comprises a compressor, a fan and an evaporator, and the water tank generally comprises a tank shell, an inner container and a condenser. The compressor, the evaporator, the throttling device and the condenser are connected together to form a refrigerant loop, and the condenser is used for heating water in the inner container.
However, when the heat pump water heater is in a standby state, the electric control board still needs to supply power, so that the electric energy loss is also generated in the long-time standby process, and the energy consumption of the heat pump water heater is further large. In view of this, how to design a heat pump water heater with low energy consumption is a technical problem to be solved by the invention.
Disclosure of Invention
The invention provides a heat pump water heater, which is characterized in that an electric control board of the heat pump water heater is supplied with power in an auxiliary manner by utilizing thermoelectric power generation so as to reduce the energy consumption of the heat pump water heater.
In order to achieve the above technical object, the present invention provides a heat pump water heater, including:
an electric control board;
the heat pump unit comprises a shell, and a compressor, an evaporator, a throttling device and a fan which are arranged in the shell;
the water tank comprises a tank shell, and an inner container and a condenser which are arranged in the tank shell;
the thermoelectric power generation module comprises a thermoelectric power generation component, a cold end heat conductor and a hot end heat conductor, wherein the thermoelectric power generation component is arranged between the cold end heat conductor and the hot end heat conductor, the cold end heat conductor is used for conducting cold energy generated by the heat pump water heater, and the hot end heat conductor is used for conducting heat energy generated by the heat pump water heater;
the compressor, the evaporator, the throttling device and the condenser are connected together to form a refrigerant loop, and the compressor, the fan and the thermoelectric generation component are respectively and electrically connected with the electric control board.
Further, the thermoelectric generation module is arranged in the water tank.
Further, the hot end heat conductor is arranged on the condenser; or the hot end heat conductor is arranged on the inner container.
Further, a return pipe of the compressor extends into the water tank and is attached to the cold end heat conductor; or the refrigerant pipe of the evaporator extends into the water tank and is attached to the cold end heat conductor.
Furthermore, the thermoelectric generation module is arranged in the heat pump unit.
Further, the cold end heat conductor is arranged on the evaporator; or the cold end heat conductor is arranged on an air return pipe of the compressor.
Further, the exhaust pipe of the compressor is attached to the hot end heat conductor; or the refrigerant pipe of the condenser extends into the heat pump unit and is attached to the hot end heat conductor.
Furthermore, the inner container is also provided with a potential sensor, and the potential sensor is electrically connected with the electric control board.
The invention further provides a control method of the heat pump water heater, which comprises the following steps: and detecting the real-time potential value Et of the inner container, comparing the real-time potential value Et with a set potential value E0, and if Et is greater than E0, carrying out current anti-corrosion protection on the inner container by using the electric energy generated by the thermoelectric generation module.
Further, in the case of Et > E0, as the difference between Et and E0 increases, the power applied to the inner container increases.
Compared with the prior art, the invention has the advantages and positive effects that: the thermoelectric generation module utilizes the temperature difference that produces between the different parts of heat pump water heater self to generate electricity, and the electric energy that the thermoelectric generation module produced can supply power to automatically controlled board, like this, under standby state, alright come for automatically controlled board power supply through the electric energy that the thermoelectric generation module produced to reduce the consumption of commercial power under the standby state, come to assist the power supply to the automatically controlled board of heat pump water heater through utilizing thermoelectric generation, with the energy consumption that reduces heat pump water heater.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a water heater according to an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of a water heater according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a thermoelectric power generation module according to an embodiment of the water heater of the present invention;
FIG. 4 is a second schematic structural diagram of a thermoelectric power generation module according to an embodiment of the water heater of the present invention;
FIG. 5 is a flow chart of a control method of another embodiment of the water heater of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a first embodiment, as shown in fig. 1 to 4, the heat pump water heater of this embodiment includes: heat pump set 1 and water tank 2. Wherein, an electric control board (not shown) can be configured on the heat pump unit 1 or the water tank 2 according to design requirements, so as to control the operation of the heat pump water heater through the electric control board.
Among them, the heat pump unit 1 generally includes a casing 11, and a compressor 12, an evaporator 13, a throttle device 14, and a fan 15 provided in the casing 11. In addition, the water tank 2 includes a cabinet 21, and an inner container 22 and a condenser 23 provided in the cabinet 21. The compressor 12, the evaporator 13, the throttling device 14 and the condenser 23 are connected to form a refrigerant loop, and the compressor 12 and the fan 15 are respectively electrically connected with the electric control board. The configuration form of the above conventional heat pump water heater is not limited and described herein.
In order to reduce energy consumption, the heat pump water heater of the embodiment further comprises a thermoelectric generation module 3, the thermoelectric generation module 3 comprises a thermoelectric generation component 31, a cold-end heat conductor 32 and a hot-end heat conductor 33, the thermoelectric generation component is arranged between the cold-end heat conductor 32 and the hot-end heat conductor 33, the cold-end heat conductor 32 is used for conducting cold energy generated by the heat pump water heater, the hot-end heat conductor 33 is used for conducting heat generated by the heat pump water heater, and the thermoelectric generation component is respectively electrically connected with the electric control board.
In actual use, the temperatures of different components in a heat pump water heater are different, for example: high temperature components typically include: condenser 23, internal bladder 22 and the exhaust of compressor 12, the low temperature components generally comprise: evaporator 13 and the return air pipe of compressor 12.
The thermoelectric power generation module 3 can generate power by utilizing the temperature difference between the high-temperature component and the low-temperature component, correspondingly, the cold end heat conductor 32 needs to be connected with the low-temperature component to conduct the cold quantity of the low-temperature component, and the hot end heat conductor 33 needs to be connected with the high-temperature component to conduct the heat quantity of the high-temperature component. Thermoelectric generation component 31 presss from both sides between cold junction heat conductor 32 and hot junction heat conductor 33, and thermoelectric generation component 31 utilizes the difference in temperature of cold junction heat conductor 32 and hot junction heat conductor 33 to generate electricity, and the electric energy of production alright supply power with to automatically controlled board.
For the installation position of the thermoelectric generation module 3, there may be various ways, for example: the thermoelectric generation module 3 is disposed in the water tank 2, or the thermoelectric generation module 3 is disposed in the heat pump unit 1, which will be described below with reference to the accompanying drawings.
In a certain embodiment, the thermoelectric generation module 3 is disposed in the water tank 2. The hot end heat conductor 33 can be attached to the inner container 22 as required to heat the hot end heat conductor 33 by using the water temperature in the inner container 22; alternatively, the hot-side heat conductor 33 may be placed against the condenser 23, so that the hot-side heat conductor 33 is heated by the condenser 23.
Meanwhile, in order to meet the requirement of cold conduction of the cold end heat conductor 32, the return pipe of the compressor 12 may extend into the water tank 2 and abut against the cold end heat conductor 32. In the working process of the compressor 12, the return pipe flows into a low-temperature refrigerant, and the cold energy of the low-temperature refrigerant in the return pipe is utilized to refrigerate the cold-end heat conductor 32, so that a large temperature difference is generated between the cold-end heat conductor 32 and the hot-end heat conductor 33, and the thermoelectric power generation component is further promoted to generate power.
Alternatively, the refrigerant tube of the evaporator 13 extends into the tank 2 and abuts the cold side heat conductor 32. The refrigerant temperature in the refrigerant pipe in the evaporator 13 is low, and the refrigerant pipe extending from the evaporator 13 is used for refrigerating the cold-end heat conductor 32, so that a large temperature difference is generated between the cold-end heat conductor 32 and the hot-end heat conductor 33, and the thermoelectric power generation component is further promoted to generate power.
In another embodiment, the thermoelectric generation module 3 is disposed in the heat pump unit 1. It is possible for the thermoelectric generation module 3 to be mounted against the evaporator 13 or to be mounted on the compressor 12. The following description will be made for each of the above two cases.
Under the condition that the thermoelectric generation module 3 is arranged on the evaporator 13, the cold-end heat conductor 32 is arranged on the evaporator 13, cold energy generated by the evaporator 13 directly refrigerates the cold-end heat conductor 32 in the running process of the compressor, and the hot-end heat conductor 33 can directly utilize an exhaust pipe of the compressor 12 to heat, or a refrigerant pipe of the condenser 23 can be extended into the heat pump unit 1 and attached to the hot-end heat conductor 33.
In the case where the thermoelectric power generation module 3 is provided in the compressor 12, the exhaust pipe of the compressor 12 may be used to heat the hot-side heat conductor 33, and the return pipe of the compressor 12 may be used to cool the cold-side heat conductor 32.
In a preferred embodiment, in order to facilitate the connection of the refrigerant pipeline by an operator, a refrigerant connection pipe 34 may be disposed on the cold-side heat conductor 32 and/or the hot-side heat conductor 33, and during actual assembly, the refrigerant connection pipe 34 may be connected between the compressor 12 and the condenser 23, or between the compressor 12 and the evaporator 13, or between the evaporator 13 and the throttling device 14, or between the condenser 23 and the throttling device 14, as required.
In addition, a plurality of thermoelectric generation components 31 can be arranged between the cold-end heat conductor 32 and the hot-end heat conductor 33 according to the requirement, and the thermoelectric generation components 31 are connected with the electric control board through connecting lines 310.
In some embodiments, the electric energy generated by the thermoelectric generation part 31 may also be stored in a storage battery. For this purpose, the thermoelectric power generation module 3 is further provided with a storage battery (not shown), and the storage battery is also electrically connected to an electric control board, and the electric control board stores electric energy generated by the thermoelectric power generation unit 31 in the storage battery as needed, or discharges the electric energy by using the storage battery to supply electric power. For the specific control method for controlling the charging and discharging of the storage battery by the electric control board, reference may be made to the control mode of the conventional storage battery, which is not limited and described herein.
In the second embodiment, in order to enhance the functionality of the heat pump water heater, the electric energy generated by the thermoelectric generation module 3 may be used to perform a galvanic corrosion protection process on the inner container 22. For this purpose, the inner container 22 is further provided with an electric potential sensor (not shown) electrically connected to the electric control board. The potential sensor can detect a potential value of the inner container 22, and determine whether or not the current corrosion prevention treatment is necessary for the inner container 22 using the detected potential value.
The set potential value E0 for triggering current corrosion prevention is obtained by testing in a factory stage and stored in an electric control board of the heat pump water heater aiming at different inner containers 22.
As shown in fig. 5, the specific corrosion control process is as follows:
step S101, the potential sensor detects the real-time potential value Et of the inner container 22 and transmits the real-time potential value Et to the electronic control board.
Step S102, the electric control board compares the detected real-time potential value Et with the stored set potential value E0.
Step S103, if Et > E0, the inner container is proved to have the possibility of corrosion prevention, and at the moment, the electric energy generated by the thermoelectric generation module 3 is used for carrying out current corrosion prevention protection on the inner container.
And step S104, if Et is less than or equal to E0, storing the electric energy generated by the thermoelectric generation module 3 in a storage battery.
Specific control methods for the heat pump water heater provided with the thermoelectric power generation component 31 and the storage battery can be classified into the following two types: the first way is that the electric energy generated by the thermoelectric generation component 31 is firstly stored in the storage battery, and then the storage battery performs current anti-corrosion operation on the inner container; the second way is that the electric energy generated by the thermoelectric generation component 31 directly performs the current corrosion prevention operation on the liner, the rest electric energy is stored in the storage battery, and the storage battery assists the current corrosion prevention operation on the liner as required.
The first control method for corrosion prevention is as follows: after the heat pump water heater is started, the temperature difference power generation component 31 stores electric energy generated by temperature difference in the storage battery; if Et > E0, the battery discharge protects the inner container 22 from corrosion by current. Specifically, after the heat pump water heater is started, the thermoelectric generation component 31 generates power by using the temperature difference between the cold-end heat conductor 32 and the hot-end heat conductor 33, the generated electric energy is stored in the storage battery, and the electric control board controls whether the storage battery performs the discharging operation according to the real-time potential value Et detected by the potential sensor. In the process of corrosion prevention, in the case of Et > E0, the electric energy applied to the inner container by the storage battery is increased along with the increase of the difference value between Et and E0.
The second control method for corrosion prevention is: after the heat pump water heater is started, the temperature difference power generation component 31 generates electric energy by using the temperature difference; if Et is greater than E0, the electric energy generated by the thermoelectric generation component 31 directly carries out current anti-corrosion protection on the inner container 22; if Et is less than or equal to E0, the electric energy generated by the thermoelectric generation section 31 is stored in the battery. Specifically, after the heat pump water heater is started, the electric control board controls the thermoelectric generation component 31 to directly perform current anti-corrosion treatment on the inner container 22 according to the real-time potential value Et of the inner container 22 detected by the potential sensor, or stores electric energy in the storage battery.
In the preferred embodiment, in order to more reasonably utilize the electric energy generated by the thermoelectric generation component 31, the real-time voltage value generated by the thermoelectric generation component 31 is Ut, and the potential difference Δ U = E t-E0 of the inner container 22; when Ut > Δ U, the electric energy generated by the thermoelectric generation component 31 is used for charging the storage battery while the electric current corrosion protection of the inner container 22 is satisfied. Thus, while the inner container 22 is ensured to carry out effective current anti-corrosion treatment, the electric energy can be effectively collected. More importantly, the hydrogen embrittlement phenomenon caused by excessive current generated by excessive voltage applied to the inner container 22 can be avoided, and the corrosion prevention effect can be improved.
When Ut is less than delta U, the thermoelectric generation component 31 and the storage battery simultaneously carry out current corrosion protection on the inner container, when the electric energy generated by the thermoelectric generation component 31 cannot meet the current corrosion protection requirement of the inner container 22, the storage battery also applies voltage to the inner container 22, and the thermoelectric generation component 31 and the storage battery are matched to carry out current corrosion protection on the inner container.
Utilize the difference in temperature to realize the conversion of heat energy and electric energy through the seebeck effect, the produced electric energy of difference in temperature power generation module utilization difference in temperature can satisfy the formula to automatically controlled board power supply, can also carry out the electric current anticorrosion to the inner bag as required and handle to need not to adopt the magnesium stick to carry out anticorrosive, avoid quality of water sclerosis, improved bathing experience nature and reduce use cost, effectual improvement user experience nature.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A heat pump water heater, comprising:
an electric control board;
the heat pump unit comprises a shell, and a compressor, an evaporator, a throttling device and a fan which are arranged in the shell;
the water tank comprises a tank shell, and an inner container and a condenser which are arranged in the tank shell;
the thermoelectric power generation module comprises a thermoelectric power generation component, a cold end heat conductor and a hot end heat conductor, wherein the thermoelectric power generation component is arranged between the cold end heat conductor and the hot end heat conductor, the cold end heat conductor is used for conducting cold energy generated by the heat pump water heater, and the hot end heat conductor is used for conducting heat energy generated by the heat pump water heater;
the compressor, the evaporator, the throttling device and the condenser are connected together to form a refrigerant loop, and the compressor, the fan and the thermoelectric generation component are respectively and electrically connected with the electric control board.
2. The heat pump water heater of claim 1, wherein the thermoelectric generation module is disposed in the water tank.
3. The heat pump water heater according to claim 2, wherein the hot side heat conductor is provided at the condenser; or the hot end heat conductor is arranged on the inner container.
4. The heat pump water heater of claim 2 wherein the compressor return pipe extends into the tank and abuts the cold end heat conductor; or the refrigerant pipe of the evaporator extends into the water tank and is attached to the cold end heat conductor.
5. The heat pump water heater of claim 1, wherein the thermoelectric generation module is disposed in the heat pump unit.
6. The heat pump water heater of claim 5 wherein the cold end heat conductor is disposed on the evaporator; or the cold end heat conductor is arranged on an air return pipe of the compressor.
7. The heat pump water heater according to claim 5, wherein the exhaust pipe of the compressor abuts against the hot end heat conductor; or the refrigerant pipe of the condenser extends into the heat pump unit and is attached to the hot end heat conductor.
8. The heat pump water heater according to any one of claims 1 to 7, wherein an electric potential sensor is further disposed on the inner container, and the electric potential sensor is electrically connected to the electric control board.
9. A control method of the heat pump water heater according to any one of claims 1 to 8, comprising: and detecting the real-time potential value Et of the inner container, comparing the real-time potential value Et with a set potential value E0, and if Et is greater than E0, carrying out current anti-corrosion protection on the inner container by using the electric energy generated by the thermoelectric generation module.
10. The heat pump water heater control method according to claim 9, wherein in the case of Et > E0, as the difference between Et and E0 increases, the electric power applied to the inner bag is increased.
CN202010088780.5A 2020-02-12 2020-02-12 Heat pump water heater and control method thereof Pending CN113251657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010088780.5A CN113251657A (en) 2020-02-12 2020-02-12 Heat pump water heater and control method thereof

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Application Number Priority Date Filing Date Title
CN202010088780.5A CN113251657A (en) 2020-02-12 2020-02-12 Heat pump water heater and control method thereof

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024066845A1 (en) * 2022-09-30 2024-04-04 海信(广东)空调有限公司 Heat pump water heater

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201878060U (en) * 2010-08-25 2011-06-22 中国电力科学研究院 Heat pump type temperature difference generating device
CN102997382A (en) * 2011-09-19 2013-03-27 珠海格力电器股份有限公司 Air conditioning system and method for generating power by utilizing waste heat of air conditioning system
EP2947398A1 (en) * 2014-05-20 2015-11-25 Atlantic Industrie Water heater including one or more thermoelectric generators
CN105331983A (en) * 2015-10-14 2016-02-17 珠海格力电器股份有限公司 Control system and control method for forced current cathodic protection
CN106949658A (en) * 2017-03-17 2017-07-14 广东美的制冷设备有限公司 The control method of air-conditioner and air-conditioner
CN206847151U (en) * 2017-06-29 2018-01-05 四川省建筑设计研究院 A kind of thermoelectric potential net for air-source heat pump units based on Seebeck effect
CN109099585A (en) * 2018-08-27 2018-12-28 珠海格力电器股份有限公司 Air energy water heater temperature difference power generation control system, water heater and control method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201878060U (en) * 2010-08-25 2011-06-22 中国电力科学研究院 Heat pump type temperature difference generating device
CN102997382A (en) * 2011-09-19 2013-03-27 珠海格力电器股份有限公司 Air conditioning system and method for generating power by utilizing waste heat of air conditioning system
EP2947398A1 (en) * 2014-05-20 2015-11-25 Atlantic Industrie Water heater including one or more thermoelectric generators
CN105331983A (en) * 2015-10-14 2016-02-17 珠海格力电器股份有限公司 Control system and control method for forced current cathodic protection
CN106949658A (en) * 2017-03-17 2017-07-14 广东美的制冷设备有限公司 The control method of air-conditioner and air-conditioner
CN206847151U (en) * 2017-06-29 2018-01-05 四川省建筑设计研究院 A kind of thermoelectric potential net for air-source heat pump units based on Seebeck effect
CN109099585A (en) * 2018-08-27 2018-12-28 珠海格力电器股份有限公司 Air energy water heater temperature difference power generation control system, water heater and control method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024066845A1 (en) * 2022-09-30 2024-04-04 海信(广东)空调有限公司 Heat pump water heater

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Application publication date: 20210813

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