CN110375462B - Solar jet and heat pump composite system and corresponding control method - Google Patents
Solar jet and heat pump composite system and corresponding control method Download PDFInfo
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- CN110375462B CN110375462B CN201910764044.4A CN201910764044A CN110375462B CN 110375462 B CN110375462 B CN 110375462B CN 201910764044 A CN201910764044 A CN 201910764044A CN 110375462 B CN110375462 B CN 110375462B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
- F25B27/005—Machines, plants or systems, using particular sources of energy using solar energy in compression type systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
Abstract
The invention provides a solar jet and heat pump composite system and a corresponding control method. The combined system comprises a heat pump circulation subsystem, wherein the heat pump circulation subsystem comprises a first heat exchanger and a second heat exchanger, the combined system further comprises an ejector, a first four-way valve, a photovoltaic heat-collecting generator and a working medium pump, the first four-way valve is provided with a first port, a second port, a third port and a fourth port, the ejector is provided with a main inlet, a main outlet and a branch inlet, the main outlet is in selective through connection with the first end of the first heat exchanger, the main inlet is in through connection with the first port, the branch inlet is in through connection with the second port, the third port is in selective through connection with the second heat exchanger, and the photovoltaic heat-collecting generator and the working medium pump are sequentially connected between the fourth port and the second end of the first heat exchanger in a pipeline manner. According to the solar jet and heat pump composite system and the corresponding control method, the structure is simple, the failure rate is low, and the composite system is beneficial to realizing various working modes.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a solar jet and heat pump combined system and a corresponding control method.
Background
The solar jet refrigeration system is widely focused on energy conservation and high efficiency because of the absence of a compressor, but the system is greatly influenced by weather factors, especially under the climatic conditions such as overcast and rains when the solar radiation intensity is insufficient, the system cannot normally operate, in order to avoid the phenomenon, the corresponding system integrating solar jet refrigeration and a heat pump appears in the prior art, and the system integrates the solar jet refrigeration system on the basis of conventional vapor compression so as to improve the energy utilization efficiency, but the system design is very complex, and the failure rate is caused.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide the solar jet and heat pump composite system and the corresponding control method, wherein the integration and separation between the solar jet and heat pump subsystem are realized through the flow path switching of the first four-way valve, the structure is simple, the failure rate is low, and the realization of multiple working modes of the composite system is facilitated.
In order to solve the problems, the invention provides a solar injection and heat pump composite system, which comprises a heat pump circulation subsystem, wherein the heat pump circulation subsystem comprises a first heat exchanger, a second heat exchanger, an injector, a first four-way valve, a photovoltaic heat-collecting generator and a working medium pump, the first four-way valve is provided with a first port, a second port, a third port and a fourth port, the injector is provided with a main channel inlet, a main channel outlet and a branch channel inlet, the main channel outlet is in selective through connection with the first end of the first heat exchanger, the main channel inlet is in through connection with the first port, the branch channel inlet is in through connection with the second port, the third port is in selective through connection with the second heat exchanger, and the photovoltaic heat-collecting generator and the working medium pump are sequentially connected in series between the fourth port and the second end of the first heat exchanger.
Preferably, a first electromagnetic valve is connected in series on a pipeline between the main pipeline outlet and the first end of the first heat exchanger, a second electromagnetic valve is connected in series on a pipeline between the third port and the second heat exchanger, and a third electromagnetic valve is connected in series on a pipeline between the working medium pump and the second end of the first heat exchanger.
Preferably, the heat pump circulation subsystem further comprises a second four-way valve, a compressor and a throttling element, wherein the second four-way valve is provided with a fifth port, a sixth port, a seventh port and an eighth port, an exhaust port of the compressor is in through connection with the fifth port, an air suction port of the compressor is in through connection with the seventh port, the eighth port h is in optional through connection with the second heat exchanger through a fourth electromagnetic valve, the sixth port is in optional through connection with the first end of the first heat exchanger through a fifth electromagnetic valve, and the throttling element is connected in series on a pipeline between the third electromagnetic valve and the second heat exchanger.
Preferably, a sixth solenoid valve is also included, said sixth solenoid valve being connected in parallel with said throttling element conduit.
Preferably, the photovoltaic heat collection generator comprises a generator shell, the generator shell is provided with an opening, a heat exchange component and a photovoltaic heat collection component are arranged at the opening, and the photovoltaic heat collection component is arranged on one side, away from the generator shell, of the heat exchange component.
Preferably, the heat exchange component is provided with a working medium input port protruding out of the outer side of the generator shell and an outlet accommodated in a gas-liquid separation cavity of the generator shell, and the generator shell is provided with a working medium output pipe communicated with the gas-liquid separation cavity.
Preferably, the photovoltaic heat collecting component comprises a photovoltaic cell panel or a photovoltaic thin film battery; and/or the heat exchange component comprises a heat pipe or a double pipe heat exchanger; and/or the photovoltaic heat collection generator further comprises an electric heating component, wherein the electric heating component is used for heating the liquid working medium in the generator shell.
The invention also provides a control method of the solar injection and heat pump combined system, which is used for controlling the switching of the flow paths of the first four-way valve and the second four-way valve and the opening and closing of the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve in the solar injection and heat pump combined system to realize the switching of the working modes of the combined system.
Preferably, when the solar energy is sufficient and the system has refrigeration requirement, the first port is controlled to be communicated with the fourth port, the second port is controlled to be communicated with the third port, the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are controlled to be opened, and the fourth electromagnetic valve, the fifth electromagnetic valve and the sixth electromagnetic valve are controlled to be closed, so that the composite system is in an injection refrigeration mode.
Preferably, when the outdoor temperature is low and the system has refrigeration requirement, the first port is controlled to be communicated with the second port, the third port is controlled to be communicated with the fourth port, the second electromagnetic valve and the sixth electromagnetic valve are controlled to be opened, and the first electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are controlled to be closed, so that the composite system is in a working medium circulation refrigeration mode; or when the outdoor temperature is higher and the system has heating requirements, the first port is controlled to be communicated with the second port, the third port is controlled to be communicated with the fourth port, the second electromagnetic valve and the sixth electromagnetic valve are controlled to be opened, and the first electromagnetic valve, the third electromagnetic valve, the fourth electromagnetic valve and the fifth electromagnetic valve are controlled to be closed, so that the composite system is in a working medium circulation heating mode.
Preferably, when the solar energy is insufficient, the outdoor temperature is high and the system has refrigeration requirement, the fifth port is controlled to be communicated with the sixth port, the seventh port is controlled to be communicated with the eighth port, the fourth electromagnetic valve and the fifth electromagnetic valve are controlled to be opened, and the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the sixth electromagnetic valve are controlled to be closed, so that the composite system is in a compression refrigeration mode; or when the solar energy is insufficient, the outdoor temperature is low and the system has heating requirements, the fifth port is controlled to be communicated with the eighth port, the seventh port is controlled to be communicated with the sixth port, the fourth electromagnetic valve and the fifth electromagnetic valve are controlled to be opened, and the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve and the sixth electromagnetic valve are controlled to be closed, so that the composite system is in a compression heating mode.
According to the solar injection and heat pump combined system and the corresponding control method, corresponding components of an injection refrigerating system are combined and integrated on the basis of a heat pump circulating subsystem through the first four-way valve, so that a solar injection and heat pump integrated combined system is constructed, the structural complexity of the system is simplified, the failure rate of the system can be reduced, and the integration and separation between the solar injection and heat pump subsystem can be realized through the flow path switching of the first four-way valve, so that the combined system can be beneficial to forming various working modes.
Drawings
FIG. 1 is a schematic diagram of a solar injection and heat pump hybrid system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the working medium flow direction when the solar injection and heat pump combined system is in an injection refrigeration mode according to the embodiment of the invention;
FIG. 3 is a schematic diagram of the flow direction of a working medium when the solar injection and heat pump combined system is in a working medium circulation refrigeration or heating mode according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the working medium flow direction when the solar injection and heat pump combined system is in a compression refrigeration mode according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of the flow direction of working medium when the solar injection and heat pump combined system is in a compression heating mode according to the embodiment of the invention;
fig. 6 is a schematic view of the internal structure of the photovoltaic heat collecting generator of fig. 1.
The reference numerals are expressed as:
11. a first heat exchanger; 12. a second heat exchanger; 21. an ejector; 22. a first four-way valve; 23. a photovoltaic heat collection generator; 231. a generator housing; 232. a heat exchange member; 233. a photovoltaic heat collection member; 234. a working medium output pipe; 235. a gas-liquid separation chamber; 236. a working medium input port; 24. a working medium pump; 31. a first electromagnetic valve; 32. a second electromagnetic valve; 33. a third electromagnetic valve; 34. a fourth electromagnetic valve; 35. a fifth electromagnetic valve; 36. a sixth electromagnetic valve; 41. a second four-way valve; 42. a compressor; 43. a throttle element; a. a first port; b. a second port; c. a third port; d. a fourth port; e. a fifth port; f. a sixth port; g. a seventh port; h. and an eighth port.
Detailed Description
Referring to fig. 1 to 6 in combination, according to an embodiment of the present invention, there is provided a solar injection and heat pump combined system, including a heat pump circulation subsystem, the heat pump circulation subsystem including a first heat exchanger 11, a second heat exchanger 12, an injector 21, a first four-way valve 22, a photovoltaic heat collector 23, and a working medium pump 24, the first four-way valve 22 having a first port a, a second port b, a third port c, and a fourth port d, the injector 21 having a main inlet, a main outlet, and a branch inlet, the main outlet being selectively connected through to the first port a, the branch inlet being connected through to the second port b, the third port c being selectively connected through to the second heat exchanger 12, the photovoltaic heat collector 23 and the working medium pump 24 being sequentially connected in series between the fourth port d and the second end of the first heat exchanger 11. In the technical scheme, the corresponding components of the injection refrigeration system are compositely integrated on the basis of the heat pump circulation subsystem through the first four-way valve 22, so that a solar injection and heat pump integrated composite system is formed, the structural complexity of the system is simplified, the failure rate of the system can be reduced, and the integration and separation between the solar injection and the heat pump subsystem are realized through the flow path switching of the first four-way valve 22, so that the composite system can be beneficial to form various working modes; in addition, the photovoltaic heat-collecting generator 23 is used to collect heat and realize photovoltaic power generation, so that electric energy can be stored while air conditioning is performed, and the stored electric energy can be delivered to electric equipment, for example, and of course, as a preferred embodiment, the stored electric energy can be supplied to the working medium pump 24, and even the compressor 42 and the four-way valve or the electromagnetic valve in the composite system.
The heat pump circulation subsystem may adopt a traditional heat pump circulation system with a single cooling or single heating mode, on the basis of which the above-mentioned related components for injection cooling can also realize the diversity of the working modes of the composite system, and further, the heat pump circulation subsystem may preferably have a cooling and heating mode to further improve the diversity of the working modes of the composite system, specifically, the heat pump circulation subsystem further includes a second four-way valve 41, a compressor 42 and a throttling element 43, the second four-way valve 41 has a fifth port e, a sixth port f, a seventh port g and an eighth port h, the exhaust port of the compressor 42 is in through connection with the fifth port e, the air suction port of the compressor 42 is in through connection with the seventh port g, the eighth port h is in through connection with the second heat exchanger 12 through a fourth electromagnetic valve 34, the sixth port f is in through connection with the first end of the first heat exchanger 11 through a fifth electromagnetic valve 35, and the throttling element 43 is in through connection with the fourth electromagnetic valve 33, and the heat pump circulation system can realize the heat pump mode before the second heat pump circulation system is switched between the fourth port and the fourth electromagnetic valve 33.
Further, a first electromagnetic valve 31 is connected in series with the pipeline between the main outlet and the first end of the first heat exchanger 11, a second electromagnetic valve 32 is connected in series with the pipeline between the third port c and the second heat exchanger 12, a third electromagnetic valve 33 is connected in series with the pipeline between the working medium pump 24 and the second end of the first heat exchanger 11, and preferably, a sixth electromagnetic valve 36 is further included, the sixth electromagnetic valve 36 is connected in parallel with the pipeline of the throttling element 43, and it is understood that the first end and the second end are both equivalent to the working medium inlet or outlet of the first heat exchanger 11, so that the working medium outlet may become the working medium inlet based on the first end and the second end in different working modes.
Preferably, the photovoltaic heat-collecting generator 23 includes a generator housing 231, the generator housing 231 has an opening, a heat-exchanging component 232 and a photovoltaic heat-collecting component 233 are disposed at the opening, the photovoltaic heat-collecting component 233 is disposed on a side of the heat-exchanging component 232 facing away from the generator housing 231, the working medium in the heat-exchanging component 232 and the working medium in the composite system circulation in the photovoltaic heat-collecting generator 23 in the technical scheme are the same working medium, the indirect heat exchanging process that the heat-exchanging component 232 and the working medium in the system are required to exchange heat in the prior art is not required, that is, the intermediate heat-exchanging mode in the traditional injection refrigeration system is not required, and therefore, the leakage possibility of the working medium and the problems of freezing at low temperature and the like of the working medium (for example, when water is adopted) are greatly reduced
Specifically, the heat exchange component 232 has a working medium input port 236 protruding outside the generator housing 231 and an outlet accommodated in a gas-liquid separation chamber 235 of the generator housing 231, the generator housing 231 is configured with a working medium output pipe 234 penetrating through the gas-liquid separation chamber 235, that is, after the system circulating working medium enters the heat exchange component 232 via the working medium input port 236 to exchange heat with external solar energy, the low-temperature low-pressure liquid phase working medium is gasified into a high-temperature high-pressure gas phase working medium, at this time, to a large extent, the working medium in the outlet is gas-liquid phase, the working medium of the gas-liquid phase is separated in the gas-liquid separation chamber 235, the separated gas phase enters the indoor side via the working medium output pipe 234 to realize refrigeration, and the heat exchange component may include a heat pipe or a double pipe heat exchanger, further, the photovoltaic heat collector 23 may further include an electric heating component, which is used for heating the liquid working medium in the generator housing 231, especially in the case of insufficient solar energy.
Preferably, the photovoltaic heat collecting member 233 includes a photovoltaic panel or a photovoltaic thin film cell.
According to an embodiment of the present invention, a control method of a solar injection and heat pump combined system is further provided, which is used for controlling the switching of the flow paths of the first four-way valve 22 and the second four-way valve 41 and the opening and closing of the first electromagnetic valve 31, the second electromagnetic valve 32, the third electromagnetic valve 33, the fourth electromagnetic valve 34, the fifth electromagnetic valve 35 and the sixth electromagnetic valve 36 in the solar injection and heat pump combined system to realize the switching of the working modes of the combined system.
Preferably, when the solar energy is sufficient and the system has refrigeration requirement, the first port a is controlled to be communicated with the fourth port d, the second port b is controlled to be communicated with the third port c, the first solenoid valve 31, the second solenoid valve 32 and the third solenoid valve 33 are controlled to be opened, the fourth solenoid valve 34, the fifth solenoid valve 35 and the sixth solenoid valve 36 are controlled to be closed, and at the moment, gas entrainment occurs at the ejector 21, so that the composite system is in the ejector refrigeration mode, and as can be understood, the compressor 42 is not operated at this moment, the working medium pump 24 is operated, and the second four-way valve 41 is not electrified.
Preferably, when the outdoor temperature is low and the system has refrigeration requirement, the first port a is controlled to be communicated with the second port b, the third port c and the fourth port d are controlled to be communicated, the second electromagnetic valve 32 and the sixth electromagnetic valve 36 are controlled to be opened, and the first electromagnetic valve 31, the third electromagnetic valve 33, the fourth electromagnetic valve 34 and the fifth electromagnetic valve 35 are controlled to be closed so as to enable the composite system to be in a working medium circulation refrigeration mode; or when the outdoor temperature is high and the system has a heating requirement, the first port a is controlled to be communicated with the second port b, the third port c and the fourth port d are controlled to be communicated, the second electromagnetic valve 32 and the sixth electromagnetic valve 36 are controlled to be opened, and the first electromagnetic valve 31, the third electromagnetic valve 33, the fourth electromagnetic valve 34 and the fifth electromagnetic valve 35 are controlled to be closed so as to enable the composite system to be in a working medium circulation heating mode, and it is understood that the compressor 42 is not operated at this time, the working medium pump 24 is operated, and the second four-way valve 41 is not electrified.
Preferably, when the solar energy is insufficient, the outdoor temperature is high and the system has refrigeration requirement, the fifth port e is controlled to be communicated with the sixth port f, the seventh port g is controlled to be communicated with the eighth port h, the fourth electromagnetic valve 34 and the fifth electromagnetic valve 35 are controlled to be opened, and the first electromagnetic valve 31, the second electromagnetic valve 32, the third electromagnetic valve 33 and the sixth electromagnetic valve 36 are controlled to be closed so as to enable the composite system to be in a compression refrigeration mode; or when the solar energy is insufficient, the outdoor temperature is low and the system has a heating requirement, the fifth port e is controlled to be communicated with the eighth port h, the seventh port g is controlled to be communicated with the sixth port f, the fourth electromagnetic valve 34 and the fifth electromagnetic valve 35 are controlled to be opened, and the first electromagnetic valve 31, the second electromagnetic valve 32, the third electromagnetic valve 33 and the sixth electromagnetic valve 36 are controlled to be closed so as to enable the composite system to be in a compression heating mode, and it can be understood that the compressor 42 is operated at the moment, the working medium pump 24 is not operated, and the first four-way valve 22 is not electrified.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (11)
1. The utility model provides a solar energy sprays and heat pump combined system, includes heat pump circulation subsystem, heat pump circulation subsystem includes first heat exchanger (11), second heat exchanger (12), its characterized in that still includes sprayer (21), first four-way valve (22), photovoltaic heat collection generator (23), working medium pump (24), first four-way valve (22) have first mouth (a), second mouth (b), third mouth (c), fourth mouth (d), sprayer (21) have main way import, main way export and branch road import, main way export with the first end of first heat exchanger (11) is selectable link up to be connected, main way import with first mouth (a) link up to be connected, branch road import with second mouth (b) link up to be connected, third mouth (c) with second heat exchanger (12) is selectable link up to be connected, photovoltaic heat collection generator (23) with working medium pump (24) pipeline in proper order in fourth mouth (d) with between first heat exchanger (11) the second end.
2. The compound system according to claim 1, characterized in that a first solenoid valve (31) is connected in series in the line between the main outlet and the first end of the first heat exchanger (11), a second solenoid valve (32) is connected in series in the line between the third port (c) and the second heat exchanger (12), and a third solenoid valve (33) is connected in series in the line between the working fluid pump (24) and the second end of the first heat exchanger (11).
3. The compound system according to claim 2, characterized in that the heat pump cycle subsystem further comprises a second four-way valve (41), a compressor (42), a throttling element (43), the second four-way valve (41) having a fifth port (e), a sixth port (f), a seventh port (g), an eighth port (h), the exhaust port of the compressor (42) being in through-connection with the fifth port (e), the suction port of the compressor (42) being in through-connection with the seventh port (g), the eighth port (h) being in selective through-connection with the second heat exchanger (12) by a fourth solenoid valve (34), the sixth port (f) being in selective through-connection with the first end of the first heat exchanger (11) by a fifth solenoid valve (35), the throttling element (43) being in series on the line between the third solenoid valve (33) and the second heat exchanger (12).
4. A compound system according to claim 3, further comprising a sixth solenoid valve (36), the sixth solenoid valve (36) being in line parallel with the throttling element (43).
5. The composite system according to claim 1, wherein the photovoltaic heat collecting generator (23) comprises a generator housing (231), the generator housing (231) has an opening, a heat exchanging component (232) and a photovoltaic heat collecting component (233) are arranged at the opening, and the photovoltaic heat collecting component (233) is coated on one side of the heat exchanging component (232) away from the generator housing (231).
6. The composite system according to claim 5, wherein the heat exchange member (232) has a working fluid input port (236) protruding outside the generator housing (231) and an outlet port accommodated in a gas-liquid separation chamber (235) provided in the generator housing (231), and the generator housing (231) is configured with a working fluid output pipe (234) penetrating the gas-liquid separation chamber (235).
7. The composite system of claim 5, wherein the photovoltaic heat collection component (233) comprises a photovoltaic panel or a photovoltaic thin film cell; and/or the heat exchange component comprises a heat pipe or a double pipe heat exchanger; and/or the photovoltaic heat collection generator (23) further comprises an electric heating component for heating the liquid working medium within the generator housing (231).
8. A control method of a solar injection and heat pump combined system is used for controlling the switching of a flow path of a first four-way valve (22) and a second four-way valve (41) and the opening and closing of a first electromagnetic valve (31), a second electromagnetic valve (32), a third electromagnetic valve (33), a fourth electromagnetic valve (34), a fifth electromagnetic valve (35) and a sixth electromagnetic valve (36) in the solar injection and heat pump combined system in claim 4 to realize the switching of the working modes of the combined system.
9. The control method according to claim 8, wherein when the solar energy is sufficient and the system has a refrigeration requirement, the first port (a) is controlled to be communicated with a fourth port (d), the second port (b) is controlled to be communicated with the third port (c), the first solenoid valve (31), the second solenoid valve (32) and the third solenoid valve (33) are controlled to be opened, and the fourth solenoid valve (34), the fifth solenoid valve (35) and the sixth solenoid valve (36) are controlled to be closed so that the composite system is in an injection refrigeration mode.
10. The control method according to claim 8, wherein when the outdoor temperature is low and the system has refrigeration requirement, the first port (a) is controlled to be communicated with the second port (b), the third port (c) and the fourth port (d), the second electromagnetic valve (32) and the sixth electromagnetic valve (36) are controlled to be opened, and the first electromagnetic valve (31), the third electromagnetic valve (33), the fourth electromagnetic valve (34) and the fifth electromagnetic valve (35) are controlled to be closed, so that the composite system is in a working medium circulation refrigeration mode; or when the outdoor temperature is higher and the system has heating requirements, the first port (a) is controlled to be communicated with the second port (b), the third port (c) and the fourth port (d) are controlled to be communicated, the second electromagnetic valve (32) and the sixth electromagnetic valve (36) are controlled to be opened, and the first electromagnetic valve (31), the third electromagnetic valve (33), the fourth electromagnetic valve (34) and the fifth electromagnetic valve (35) are controlled to be closed, so that the composite system is in a working medium circulation heating mode.
11. The control method according to claim 8, wherein when the solar energy is insufficient, the outdoor temperature is high and the system has refrigeration requirement, the fifth port (e) is controlled to be communicated with the sixth port (f), the seventh port (g) is controlled to be communicated with the eighth port (h), the third electromagnetic valve (33), the fourth electromagnetic valve (34) and the fifth electromagnetic valve (35) are controlled to be opened, and the first electromagnetic valve (31), the second electromagnetic valve (32) and the sixth electromagnetic valve (36) are controlled to be closed so as to enable the composite system to be in a compression refrigeration mode; or when the solar energy is insufficient, the outdoor temperature is low and the system has heating requirements, the fifth port (e) is controlled to be communicated with the eighth port (h), the seventh port (g) is controlled to be communicated with the sixth port (f), the third electromagnetic valve (33), the fourth electromagnetic valve (34) and the fifth electromagnetic valve (35) are controlled to be opened, and the first electromagnetic valve (31), the second electromagnetic valve (32) and the sixth electromagnetic valve (36) are controlled to be closed so that the composite system is in a compression heating mode.
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| CN110848849A (en) * | 2019-11-28 | 2020-02-28 | 广东美的暖通设备有限公司 | Air conditioner, control method of air conditioner, and storage medium |
| CN115127166B (en) * | 2022-08-31 | 2022-11-25 | 宁波奥克斯电气股份有限公司 | Air conditioner energy-saving system, control method thereof and air conditioner |
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| JP2010096436A (en) * | 2008-10-17 | 2010-04-30 | Hibiya Eng Ltd | Ejector type refrigeration system |
| CN202254476U (en) * | 2011-09-30 | 2012-05-30 | 北京时代科仪新能源科技有限公司 | Efficient heat energy processing system |
| CN103398498A (en) * | 2013-07-24 | 2013-11-20 | 广东申菱空调设备有限公司 | Compact solar ejector refrigeration and heat pump integrated system and method for controlling same |
| CN104315746A (en) * | 2014-11-05 | 2015-01-28 | 河北省科学院能源研究所 | Directly-evaporated type solar jetting refrigerating system |
| CN104807252A (en) * | 2015-05-06 | 2015-07-29 | 西安交通大学 | Solar assisted ejector synergized steam compression type heat pump circulating system and method |
| CN210512241U (en) * | 2019-08-19 | 2020-05-12 | 珠海格力电器股份有限公司 | Solar energy injection and heat pump combined system |
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