CN207094909U - Heat pump system and air conditioning system - Google Patents
Heat pump system and air conditioning system Download PDFInfo
- Publication number
- CN207094909U CN207094909U CN201721057806.XU CN201721057806U CN207094909U CN 207094909 U CN207094909 U CN 207094909U CN 201721057806 U CN201721057806 U CN 201721057806U CN 207094909 U CN207094909 U CN 207094909U
- Authority
- CN
- China
- Prior art keywords
- compressor
- heat
- pump system
- solar
- heat pump
- 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.)
- Active
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 33
- 239000003507 refrigerant Substances 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims description 37
- 238000004891 communication Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000010687 lubricating oil Substances 0.000 description 5
- 238000005485 electric heating Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The application provides a heat pump system and air conditioning system, heat pump system includes compressor, first heat exchanger, second heat exchanger and the solar collector that sets up on the refrigerant flow path, still be provided with switching device on the refrigerant flow path, switching device constructs for making heat pump system has first connected mode and/or second connected mode first connected mode, solar collector works alone the second connected mode, solar collector with the compressor constitutes parallelly connected flow path. This application utilizes the supplementary air conditioner operation of solar heat through setting up the heat heating refrigerant that solar collector collected sunshine, has reduced the operation number of times of compressor, saves the air conditioner and uses the electric energy, has improved the life of compressor greatly, makes the air conditioner operation more energy-conserving, more environmental protection.
Description
Technical Field
The utility model relates to an air conditioning technology field, concretely relates to heat pump system and be provided with this heat pump system's air conditioning system.
Background
The traditional air conditioner generally uses a compressor to compress a refrigerant to realize refrigeration and heating, the compressor has high power consumption, the air conditioner has high use cost and can cause energy shortage, and particularly, when the power consumption peak in summer, a high-power air conditioner can cause great load to a power grid, influence the stability of the power grid and even cause electricity shortage in local areas. In addition, when the air conditioner operates, the compressor is always in a working state, so that the abrasion of the compressor is accelerated in hot summer days, and the service life of the air conditioning system is influenced.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present invention is to provide a heat pump system and an air conditioning system provided with the same, which can prolong the service life of a compressor and is more energy-saving and environment-friendly.
In order to achieve the above object, on the one hand, the utility model adopts the following technical scheme:
a heat pump system comprises a compressor, a first heat exchanger, a second heat exchanger and a solar heat collector, wherein the compressor, the first heat exchanger, the second heat exchanger and the solar heat collector are arranged on a refrigerant flow path, a switch device is further arranged on the refrigerant flow path, the switch device is structured to enable the heat pump system to have a first communication mode and/or a second communication mode, the solar heat collector works independently in the first communication mode, and the solar heat collector and the compressor form a parallel flow path in the second communication mode.
Preferably, the switching device is further configured such that the heat pump system has a third communication manner in which the solar collector and the compressor constitute a series flow path.
Preferably, the system further comprises a gas-liquid separator, the output ends of the compressor and the solar heat collector are connected to the first end of the first heat exchanger or the second heat exchanger, the second end of the second heat exchanger or the first heat exchanger is connected to the input end of the gas-liquid separator, and the gas output end of the gas-liquid separator is connected to the input ends of the compressor and the solar heat collector respectively.
Preferably, the system further comprises a four-way reversing valve, the output ends of the compressor and the solar thermal collector are connected to a first port of the four-way reversing valve through a first flow path, a first end of the first heat exchanger is connected to a second port of the four-way reversing valve, a first end of the second heat exchanger is connected to a third port of the four-way reversing valve, and a fourth port of the four-way reversing valve is connected to the input end of the gas-liquid separator.
Preferably, the liquid output end of the gas-liquid separator is connected with the input end of the solar heat collector.
Preferably, the output end of the solar heat collector is provided with two branches, which are respectively: the first branch circuit is connected with the output end of the solar heat collector and the first end of the first heat exchanger or the second heat exchanger, and the second branch circuit is connected with the output end of the solar heat collector and the input end of the compressor.
Preferably, the switching device includes a first control valve disposed on the first branch, and/or the switching device further includes a second control valve disposed on the second branch, and the first control valve and the second control valve are respectively used for controlling on-off of the first branch and the second branch.
Preferably, the switching device further comprises a third control valve disposed between the output end of the gas-liquid separator and the input end of the compressor, and configured to control the input of the refrigerant from the gas-liquid separator to the compressor.
Preferably, the input end of the compressor is provided with a first input port, and the gas output end of the gas-liquid separator and the output end of the solar heat collector are both communicated with the compressor through the first input port; or the input end of the compressor is provided with two input ports, namely a first input port and a second input port, wherein the gas output end of the gas-liquid separator is connected with the first input port, and the output end of the solar heat collector is connected with the second input port.
Preferably, the second inlet is located at a lower portion or bottom of the compressor.
Preferably, a temperature sensor and/or a pressure sensor is arranged on the solar collector.
On the other hand, the utility model adopts the following technical scheme:
an air conditioning system is provided with a controller in and comprises the heat pump system.
In the application, the solar heat collector is arranged to collect heat of sunlight to heat the refrigerant, and the solar heat is utilized to assist the air conditioner to operate, so that the problem that the traditional air conditioner only depends on a compressor to compress the refrigerant in a single form is solved, the traditional air conditioner is well supplemented, the operation times of the compressor are reduced, the electric energy used by the air conditioner is saved, and the service life of the compressor is greatly prolonged; simultaneously, in this application, gather the heat information feedback to air conditioning system to solar collector for air conditioning system can be according to real-time environment temperature regulation mode, makes the air conditioner operation more energy-conserving, more environmental protection.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
fig. 1 is a schematic diagram of a heat pump system according to an embodiment of the present invention;
fig. 2 shows a schematic diagram of a heat pump system according to a second embodiment of the present invention.
Detailed Description
The present invention is described below based on embodiments, and it is understood by those of ordinary skill in the art that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".
As shown in fig. 1, the heat pump system provided by the present application includes a compressor 1, a four-way reversing valve 2, a first heat exchanger 3, a second heat exchanger 4, a gas-liquid separator 5, and a solar heat collector 6, which are disposed on a refrigerant flow path. Preferably, the solar heat collector 6 comprises a solar heat collecting plate, a solar heat collecting pipe is arranged on the solar heat collecting plate, and an input end and an output end which are communicated with the solar heat collecting pipe are arranged on the solar heat collecting plate. The solar heat collector 6 and the compressor 1 can form a series or parallel flow path, a switching device is arranged on a branch of the parallel flow path and used for controlling the connection or the disconnection of the branch, and the switching device is configured to enable the heat pump system to have a first communication mode and/or a second communication mode, wherein the solar heat collector works independently in the first communication mode, and the solar heat collector and the compressor form a parallel flow path in the second communication mode. Preferably, the switching device is further configured such that the heat pump system has a third communication manner in which the solar collector and the compressor constitute a series flow path.
The first embodiment is as follows:
specifically, the output ends of the compressor 1 and the solar heat collector 6 are connected to a first port 21 of the four-way reversing valve 2 through a first flow path 10, one end of the first heat exchanger 3 is connected to a second port 22 of the four-way reversing valve 2, one end of the second heat exchanger 4 is connected to a third port 23 of the four-way reversing valve 2, and a fourth port 24 of the four-way reversing valve 2 is connected to the input end of the gas-liquid separator 5. The compressor 1 and the solar heat collector 6 are arranged between the gas-liquid separator 5 and the first port 21 of the four-way reversing valve 2, and both the compressor 1 and the solar heat collector 6 can provide high-temperature and high-pressure gaseous refrigerant for the first heat exchanger 3 or the second heat exchanger 4; or the solar heat collector 6 and the compressor 1 are connected in parallel to operate, and the two heat and pressure treatment is simultaneously carried out on the refrigerant; or the solar heat collector 6 and the compressor 1 are connected in series for operation, the solar heat collector 6 preheats the refrigerant, the preheated gaseous refrigerant is input into the compressor for further processing, and under the condition, the preheated refrigerant can enter the compressor from the bottom of the compressor 1, so that the heat collected by the solar heat collector 6 can be firstly transferred to the lubricating oil in the compressor 1, the lubricating oil can be heated, and the compressor is prevented from being blocked due to the solidification of the lubricating oil. The heat in the preheated refrigerant can play a role of an electric heating belt in the compressor, the electric heating belt in the compressor can be free from inputting electric energy, solar energy can be effectively utilized, and resources are saved. The specific operation control of the solar heat collector 6 and the compressor 1 can make the operation of the heat pump system and the environmental conditions be linked in real time, and resources can be effectively saved (the specific control aspect is described in detail later).
Preferably, the input end of the compressor 1 is provided with two input ports, which are a first input port 11 and a second input port 12, wherein the first input port is connected with the gas output end of the gas-liquid separator 5, and is used for inputting the gaseous refrigerant separated by the gas-liquid separator 5 into the compressor 1 for processing. The gas output end of the gas-liquid separator 5 is also connected with the input end of the solar heat collector 6, and is used for inputting the gaseous refrigerant separated by the gas-liquid separator 5 into the solar heat collector 6 for processing. Preferably, a pump 51 is arranged in the pipeline between the gas-liquid separator 5 and the solar collector 6, and the pump 51 is arranged to accelerate the transportation from the gas-liquid separator 5 to the solar collector 6. In another preferred embodiment, the input end of the solar heat collector 6 is further connected to the liquid output end of the gas-liquid separator 5 (not shown in the figure), for inputting the liquid refrigerant in the gas-liquid separator 5 into the solar heat collector 6 for heating and pressurizing. Preferably, the second input port 12 is located at a lower portion or a bottom portion of the compressor, so that the refrigerant preheated by the solar heat collector 6 can enter the compressor from the lower portion or the bottom portion of the compressor 1, and the lubricating oil located at the bottom of the compressor can be heated. In a preferred embodiment, the output end of the solar heat collector 6 is provided with two branches, respectively: the first branch 61 connecting the output end of the solar collector 6 with the first flow path 10, and the second branch 62 connecting the output end of the solar collector 6 with the second input port 12 of the compressor 1 are respectively used for inputting the gaseous refrigerant heated by the solar collector 6 into the first heat exchanger 3/the second heat exchanger 4 or the compressor 1. Preferably, a first control valve 611 is disposed on the first branch path 61, a second control valve 621 is disposed on the second branch path 62, and the first control valve 611 and the second control valve 621 are preferably solenoid valves for controlling the on/off of the first branch path 61 and the second branch path 62, respectively. In order to control the input of the refrigerant from the gas-liquid separator 5 to the compressor 1, a third control valve 13 is provided in a branch between the output end of the gas-liquid separator 5 and the input end of the compressor 1, and the third control valve 13 is preferably an electromagnetic valve for controlling the on/off of the output of the compressor 1.
Further, this application still provides an air conditioning system, and this air conditioning system is provided with the heat pump system in this application, and this air conditioning system can make full use of the solar energy in the nature, can judge the ambient temperature condition according to the solar energy conversion condition simultaneously, carries out real-time automatic control to air conditioning system, can effectively avoid the wasting of resources. Preferably, a controller (not shown) is provided in the air conditioning system for controlling the operation of the air conditioning system.
In a preferred embodiment, a temperature sensor and a pressure sensor (not shown) are disposed on the air conditioning system, and are used for sensing the temperature and the pressure of the refrigerant in the solar heat collector 6, respectively, and the controller collects the sensing results of the temperature sensor and the pressure sensor and is used for controlling the operation of the air conditioning system.
Further, the present application also provides a control method of the air conditioning system, where the control method includes a step of determining a time required for the solar thermal collector 6 to heat the refrigerant to a system specified state, and determining an ambient temperature condition according to the determined time, so as to control the opening and closing of each flow path and branch in the heat pump system to control the operation of the heat pump system, and at the same time, controlling the operation of the air conditioning system according to the determined ambient temperature condition.
Specifically, in a preferred embodiment, a first predetermined time T1 is set in the controller, for example, the first predetermined time is 0.5-3 minutes, preferably 1 minute, when the time required for the solar heat collector 6 to heat the refrigerant to the system specified state is less than the first predetermined time T1, the controller determines that the outdoor environment temperature is high and sunlight is sufficient according to the information fed back by the solar heat collector 6, and the heat collecting plate of the solar heat collector 6 collects more heat, and at this time, the controller determines that the system requirement can be met only by using the solar heat collector 6 to heat the refrigerant, and then the controller controls the first control valve 611 to open, controls the second control valve 621 and the third control valve 13 to close, stops the compressor 1, and controls the gaseous refrigerant output from the output end of the solar heat collector 6 to flow into the first heat exchanger 3 or the second heat exchanger 4 through the first branch 61 and the first flow path 10 for heat exchange (it is determined according to the specific state of the four-way valve 2 that The first heat exchanger 3 enters the second heat exchanger 4, which is prior art and will not be described in detail herein); meanwhile, the air conditioning system controls the operation mode of the air conditioning system according to the feedback information, specifically, in this case, if the feedback external environment temperature is high, the output power is increased, for example, the operation power of the fan is increased, so that the refrigerating capacity is increased to meet the demand of the indoor user, and the circulation speed of the refrigerant on the heat collecting plate of the solar heat collector 6 is increased and the refrigerant output is increased by increasing the power of the pump 51. Meanwhile, as the ambient temperature is higher, the air conditioning system protects the system safety, the controller can also control and accelerate the pressure and temperature frequency of the heat collecting plate of the solar heat collector 6, and when the pressure is too high, the air conditioning system controls the unfolding angle of the sun shield on the heat collecting plate, so that the heat absorption is reduced, and the stable and reliable operation of the air conditioning system is ensured.
A second predetermined time T2 is set in the controller, which second predetermined time T2 is greater than the first predetermined time T1, for example chosen to be 4-6 minutes, preferably 5 minutes. When the time required by the heat collecting plate to heat the refrigerant to the specified state of the system is greater than or equal to the first preset time T1 and less than the second preset time T2, the controller judges that the sunlight is insufficient or the ambient temperature is not high according to the information fed back by the heat collecting plate, the refrigerant can not meet the system requirement only by heating the refrigerant through the heat collecting plate, at the moment, the controller controls the compressor 1 to be opened according to the information fed back by the heat collecting plate, controls the first control valve 611 and the third control valve 13 to be opened, and controls the second control valve 621 to be closed, so that the first branch circuit 61 is opened, the second branch circuit 62 is closed, the refrigerant output from the gas output end of the gas-liquid separator 5 respectively enters the solar heat collector 6 and the compressor 1, the heat collecting plate of the solar heat collector 6. At the moment, the controller controls the air conditioning system to reduce power, namely, the air conditioning unit operates in a frequency reduction mode, the operating frequency of the compressor is reduced, and therefore the unit power is reduced.
When the time required by the heat collecting plate to heat the refrigerant to the specified state of the system is more than or equal to the second preset time, the heat collecting plate collects heat to heat the refrigerant slowly, and the controller judges that the outdoor environment temperature is low and the sunlight is insufficient according to the information fed back by the solar heat collector 6. Therefore, it is determined that the heat collecting plate of the solar heat collector 6 cannot heat the refrigerant to the system specified state, at this time, the second control valve 621 is controlled to be opened, and the first control valve 611 and the third control valve 13 are controlled to be closed, so that the solar heat collector 6 and the compressor 1 operate in series, the refrigerant heated by the solar heat collector 6 enters the compressor 1 through the second branch 62 to be continuously processed, and the solar heat collector 6 is mainly used for preheating the refrigerant. The refrigerant processed by the solar heat collector 6 enters the compressor from the bottom of the compressor 1 through the second input port 12 of the compressor 1, so that the heat collected by the solar heat collector 6 can be firstly transferred to the lubricating oil in the compressor 1, the effect of the electric heating belt of the compressor can be achieved, the problem of resource waste caused by heating of the electric heating belt can be solved, and the compressor is prevented from being blocked due to oil solidification. Meanwhile, the controller can control the system output according to the information fed back by the heat collecting plate of the solar heat collector 6 in real time, correspondingly reduce the power, reduce the refrigerating capacity and the like, and ensure the system to operate and save energy.
Example two:
most of the contents of this embodiment are the same as those of the first embodiment, and the same parts will not be repeated, and the following description mainly describes different parts from the first embodiment.
As shown in fig. 2, in this embodiment, only one first input port 11 is provided on the compressor 1, the second branch 62 is communicated with the first input port 11, and the refrigerant output from the solar heat collector 6 enters the compressor 1 through the first input port 11 for further processing.
The heat pump system and the air conditioning system can fully utilize the heat collecting plate of the solar heat collector to collect heat of the sun and the surrounding environment, assist in heating the refrigerant and heat the refrigerant into high-temperature and high-pressure gas, when the pressure sensor and the temperature sensor in the heat collecting plate detect the pressure and the temperature of the refrigerant to reach the set value of the system, the valve of the heat collecting plate is opened by controlling a control valve, such as an electromagnetic valve, the high-temperature and high-pressure refrigerant is transmitted to a heat exchanger for heat exchange, and meanwhile, the gas-liquid separator pumps the separated gaseous refrigerant back into the heat collecting plate through the pump 51, so that the air conditioning is used for refrigerating and; if the environment heat is insufficient, the refrigerant heated by the heat collecting plate of the solar heat collector is preheated and then transmitted to the compressor for use after being compressed, so that the output of the compressor is reduced; meanwhile, the collected heat information is fed back to the air conditioning system, and the air conditioning operation mode is controlled to realize energy-saving operation.
Those skilled in the art will readily appreciate that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (12)
1. A heat pump system is characterized by comprising a compressor, a first heat exchanger, a second heat exchanger and a solar heat collector which are arranged on a refrigerant flow path, wherein a switch device is further arranged on the refrigerant flow path, the switch device is constructed in a manner that the heat pump system has a first communication mode and/or a second communication mode, the solar heat collector works independently in the first communication mode, and the solar heat collector and the compressor form a parallel flow path in the second communication mode.
2. The heat pump system of claim 1, wherein the switching device is further configured such that the heat pump system has a third communication in which the solar collector and the compressor form a series flow path.
3. The heat pump system of claim 2, further comprising a gas-liquid separator, wherein the output ends of the compressor and the solar collector are commonly connected to a first end of the first heat exchanger or the second heat exchanger, a second end of the second heat exchanger or the first heat exchanger is connected to an input end of the gas-liquid separator, and a gas output end of the gas-liquid separator is connected to an input end of the compressor and the solar collector, respectively.
4. The heat pump system of claim 3, further comprising a four-way reversing valve, wherein the output of the compressor and the solar collector are connected to a first port of the four-way reversing valve via a first flow path, wherein a first end of the first heat exchanger is connected to a second port of the four-way reversing valve, wherein a first end of the second heat exchanger is connected to a third port of the four-way reversing valve, and wherein a fourth port of the four-way reversing valve is connected to the input of the gas-liquid separator.
5. The heat pump system of claim 3, wherein the liquid output of the gas-liquid separator is connected to the input of the solar collector.
6. The heat pump system according to claim 3, wherein the output of the solar collector is provided with two branches, respectively: the first branch circuit is connected with the output end of the solar heat collector and the first end of the first heat exchanger or the second heat exchanger, and the second branch circuit is connected with the output end of the solar heat collector and the input end of the compressor.
7. The heat pump system of claim 6, wherein the switching device comprises a first control valve disposed on the first branch, and/or the switching device further comprises a second control valve disposed on the second branch, the first and second control valves being configured to control the opening and closing of the first and second branches, respectively.
8. The heat pump system as claimed in claim 7, wherein the switching device further comprises a third control valve disposed between an output of the gas-liquid separator and an input of the compressor for controlling an input of the refrigerant from the gas-liquid separator to the compressor.
9. The heat pump system of claim 6,
the input end of the compressor is provided with a first input port, and the gas output end of the gas-liquid separator and the output end of the solar heat collector are communicated with the compressor through the first input port; or,
the input end of the compressor is provided with two input ports, namely a first input port and a second input port, wherein the gas output end of the gas-liquid separator is connected with the first input port, and the output end of the solar heat collector is connected with the second input port.
10. The heat pump system of claim 9, wherein the second input port is located at a lower portion or bottom of the compressor.
11. Heat pump system according to one of claims 1 to 10, characterized in that a temperature sensor and/or a pressure sensor is provided on the solar collector.
12. An air conditioning system having a controller disposed therein, the air conditioning system comprising a heat pump system as claimed in any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721057806.XU CN207094909U (en) | 2017-08-23 | 2017-08-23 | Heat pump system and air conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721057806.XU CN207094909U (en) | 2017-08-23 | 2017-08-23 | Heat pump system and air conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207094909U true CN207094909U (en) | 2018-03-13 |
Family
ID=61542380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721057806.XU Active CN207094909U (en) | 2017-08-23 | 2017-08-23 | Heat pump system and air conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207094909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514718A (en) * | 2017-08-23 | 2017-12-26 | 珠海格力电器股份有限公司 | Heat pump system, air conditioning system and control method thereof |
-
2017
- 2017-08-23 CN CN201721057806.XU patent/CN207094909U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107514718A (en) * | 2017-08-23 | 2017-12-26 | 珠海格力电器股份有限公司 | Heat pump system, air conditioning system and control method thereof |
| CN107514718B (en) * | 2017-08-23 | 2023-08-11 | 珠海格力电器股份有限公司 | Heat pump system, air conditioning system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203533802U (en) | Air-conditioning system | |
| CN106016906B (en) | A kind of moveable refrigerator and air conditioner integrated machine equipment | |
| CN101813360B (en) | Method and device for controlling electric heating of air conditioner | |
| CN101995110A (en) | Double-cylinder variable-capacity compressor air conditioning system and control method thereof | |
| CN206449767U (en) | A kind of central air-conditioning energy-saving system with chilled water low-temperature protection device | |
| CN100520229C (en) | Multiple closed loop soil-derived water-water heat pump system | |
| CN201488418U (en) | Defrosting structure of air source heat pump water heater | |
| CN109357431A (en) | A kind of module-combined-type air conditioner system and defrosting control method | |
| CN201779921U (en) | Multifunctional switch system of air conditioner and heat pump water heater | |
| CN207094909U (en) | Heat pump system and air conditioning system | |
| CN102734981B (en) | Air-source modular three-in-one air-conditioning hot water system | |
| CN102109244A (en) | Combined cooling and heating supply system and control method | |
| CN107514718B (en) | Heat pump system, air conditioning system and control method thereof | |
| CN205119211U (en) | Energy storage type air source heat pump heating system | |
| CN201935317U (en) | Cold accumulation solar energy injecting-compressing combined refrigerating unit | |
| CN107504709B (en) | Ultralow temperature type multifunctional heat pump system | |
| CN203147985U (en) | Control device for GSHP (Ground Source Heat Pump) unit | |
| CN213178886U (en) | Air conditioning system for switching outdoor unit and ground source water to supply heat by electromagnetic valve | |
| CN201273702Y (en) | Heat recovery type air-conditioning water heater | |
| CN207050131U (en) | A kind of air-conditioning | |
| CN212299533U (en) | Heat exchange system and air conditioner | |
| CN103322738A (en) | Temperature difference switch heating and defrosting design applied to compression type heating system | |
| CN203964435U (en) | Air Conditioning System with Heat | |
| CN203893493U (en) | Hot and cold water type geothermal heat pump system with function of heat recovery | |
| CN202835612U (en) | Multifunctional refrigerating and heating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |