CN115371284A - Integrated air conditioning system, control method and air conditioner - Google Patents
Integrated air conditioning system, control method and air conditioner Download PDFInfo
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- CN115371284A CN115371284A CN202211050883.8A CN202211050883A CN115371284A CN 115371284 A CN115371284 A CN 115371284A CN 202211050883 A CN202211050883 A CN 202211050883A CN 115371284 A CN115371284 A CN 115371284A
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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
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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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
- F25B40/00—Subcoolers, desuperheaters or superheaters
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/021—Indoor unit or outdoor unit with auxiliary heat exchanger not forming part of the indoor or outdoor unit
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Abstract
The embodiment of the invention provides an integrated air conditioner system, a control method and an air conditioner. This integrated air conditioning system includes solar water heating system and air conditioning system, air conditioning system includes: the system comprises a compressor, a first four-way valve, a second four-way valve, an intermediate heat exchanger, an outdoor heat exchanger, an indoor unit, a first electromagnetic valve and a second electromagnetic valve; the intermediate heat exchanger can exchange heat with the solar water heating system; the outdoor heat exchanger and the indoor unit are connected with the compressor through the first four-way valve; the outdoor heat exchanger and the intermediate heat exchanger are connected with the compressor through the second four-way valve. The invention solves the technical problem that a hot water system and an air conditioning system are independent systems and can not meet the requirements of refrigeration, heating and hot water heating through one system device, and achieves the technical effect of solar energy and electric energy complementation.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an integrated air conditioner system, a control method and an air conditioner.
Background
With the improvement of living standard, an air conditioning system and a solar water heating system become necessary articles for life. However, at present, the solar energy and the air conditioning system are independent systems, and the requirements of refrigeration, heating and hot water heating cannot be considered through one system device, so that the complementation of the solar energy and the electric energy is realized. The condensation heat generated by the outdoor heat exchanger of the air conditioner is usually directly discharged into the atmosphere, so that the energy is greatly wasted; the existing heat recovery system has high cost, complex application and low market acceptance.
Disclosure of Invention
The invention provides an integrated air conditioning system, aiming at solving the problems that a hot water system and an air conditioning system are independent systems and the requirements of refrigeration, heating and hot water production cannot be met through one system device. This integrated air conditioning system includes solar water heating system and air conditioning system, air conditioning system includes: the system comprises a compressor, a first four-way valve, a second four-way valve, an intermediate heat exchanger, an outdoor heat exchanger, an indoor unit, a first electromagnetic valve and a second electromagnetic valve; the intermediate heat exchanger can exchange heat with the solar water heating system; the outdoor heat exchanger and the indoor unit are connected with the compressor through the first four-way valve; the outdoor heat exchanger and the intermediate heat exchanger are connected with the compressor through the second four-way valve; the first electromagnetic valve is arranged between the outdoor heat exchanger and the first four-way valve, and the second electromagnetic valve is arranged between the outdoor heat exchanger and the second four-way valve.
The technical effect achieved after the technical scheme is adopted is as follows: through add the middle heat exchanger that can carry out the heat transfer with solar water heating system at air conditioning system for solar water heating system can carry out heat exchange with air conditioning system between, can be through the mode of adjusting first cross valve, second cross valve, first solenoid valve and second solenoid valve, the operating condition of air conditioning system is switched to the refrigerant flow path of intelligent control air conditioning system, satisfies indoor refrigeration demand, indoor heating demand, outdoor heat exchanger defrosting demand, and the hot water demand of making, realizes the complementation of solar energy and electric energy.
In this embodiment, the solar water heating system includes: the solar heat collector, the circulating pump and the heat collecting water tank; wherein the intermediate heat exchanger is capable of exchanging heat with the heat collecting water tank.
The technical effect achieved after the technical scheme is adopted is as follows: the solar heat collector can collect solar energy, and the cold water in the heat collecting water tank is heated by the solar energy; the circulating pump can pump the water in the heat collecting water tank into the solar heat collector to maintain the circulating operation of the solar energy system. Because the intermediate heat exchanger can exchange heat with the heat collection water tank, when the solar energy is insufficient, the intermediate heat exchanger can be utilized to improve the water temperature in the heat collection water tank, and the auxiliary hot water making of the air conditioning system is realized; when the air conditioning system is in defrosting operation, the heat in the heat collecting water tank can be utilized to maintain the heating operation of the indoor unit, and the air conditioning system does not need to be switched from the heating mode to the cooling mode.
The present embodiment provides a control method of an integrated air conditioning system, which is used for controlling the integrated air conditioning system according to any one of the previous embodiments, and the control method of the integrated air conditioning system includes: receiving a refrigeration instruction; closing the first solenoid valve and the second solenoid valve; acquiring the water temperature in a heat collecting water tank; and controlling the on-off of the first electromagnetic valve according to the relation between the water temperature and the water temperature threshold value.
The technical effect achieved after the technical scheme is adopted is as follows: after the integrated air conditioning system receives a refrigeration instruction, the air conditioning system enters a refrigeration mode, so that the condensation heat generated by the air conditioning system is directly discharged to the atmosphere to cause energy waste in order to avoid that the refrigerant enters the outdoor heat exchanger from the first four-way valve or the second four-way valve, and the first electromagnetic valve and the second electromagnetic valve are closed, so that the refrigerant enters the intermediate heat exchanger to be condensed and heated. Through acquiring the water temperature in the heat collecting water tank, the condensation capacity of the intermediate heat exchanger can be judged according to the size relation between the water temperature in the heat collecting water tank and the water temperature threshold value, so that the on-off of the first electromagnetic valve can be controlled according to the condensation capacity of the intermediate heat exchanger, and indoor different refrigeration requirements can be met.
In this embodiment, the controlling the on/off of the first electromagnetic valve according to the relationship between the water temperature and the water temperature threshold value includes: when the water temperature is lower than the water temperature threshold value, the first electromagnetic valve is kept closed, so that the refrigerant discharged by the compressor enters the intermediate heat exchanger for condensation and heat dissipation, and the condensed refrigerant enters the indoor unit for evaporation and heat absorption; and when the water temperature is greater than or equal to the water temperature threshold value, opening the first electromagnetic valve so that one part of the refrigerant discharged by the compressor enters the intermediate heat exchanger for condensation, and the other part of the refrigerant enters the outdoor heat exchanger for condensation.
The technical effect achieved after the technical scheme is adopted is as follows: if the water temperature is lower than the water temperature threshold value, the water temperature in the current water collection tank is lower, the condensation effect of the intermediate heat exchanger is better, the indoor refrigeration requirement of the air conditioning system can be met, the outdoor heat exchanger does not need to be opened, and therefore the first electromagnetic valve is controlled to be kept closed. If the water temperature is greater than or equal to the water temperature threshold value, the water temperature in the current heat collecting water tank is higher, the heat exchange difficulty between the intermediate heat exchanger and the heat collecting water tank is higher, and the condensation effect of the intermediate heat exchanger is poorer, so that a mode of opening the first electromagnetic valve is needed, a part of high-pressure refrigerant enters the outdoor heat exchanger for condensation and heat dissipation, the indoor refrigeration requirement is met through the double condensers, and the influence on the indoor refrigeration effect of the air conditioning system is avoided.
In this embodiment, the control method of the integrated air conditioning system further includes: when the integrated air conditioning system is in heating operation, the refrigerant discharged from the compressor preferentially enters the indoor unit.
The technical effect achieved after the technical scheme is adopted is as follows: when the integrated air-conditioning system is in heating operation, the refrigerant discharged from the compressor preferentially enters the indoor unit for condensation and heating, and the condensation heat generated by the air-conditioning system is preferentially used for heating the indoor unit, so that the normal heating process of the air-conditioning system can be prevented from being influenced by the heating water.
In this embodiment, when the integrated air conditioning system is operated in a defrosting mode, the indoor unit continuously heats.
The technical effect achieved after the technical scheme is adopted is as follows: when the integrated air conditioning system is in defrosting operation, the air conditioning system does not need to be switched into a refrigerating operation mode from a heating operation mode, and the indoor unit can be continuously used as a condenser for condensation and heating, so that the problem that the indoor room temperature fluctuation is large due to the fact that the air conditioning system is switched into the operation mode is avoided, and the use comfort of a user can be improved.
In this embodiment, when the integrated air conditioning system is operated for defrosting, the first electromagnetic valve is closed, and the second electromagnetic valve is opened, so that a part of the refrigerant discharged from the compressor enters the outdoor heat exchanger for defrosting, the other part of the refrigerant enters the indoor unit for condensing and heating, and the condensed refrigerant joins and then enters the intermediate heat exchanger for evaporation and heat absorption.
The technical effect achieved after the technical scheme is adopted is as follows: when the integrated air conditioning system operates in a defrosting mode, the high-pressure refrigerant discharged by the compressor can be divided into two paths by closing the first electromagnetic valve and opening the second electromagnetic valve, one path of refrigerant enters the outdoor heat exchanger to be condensed and heated so as to meet the defrosting requirement of the outdoor heat exchanger, the other path of refrigerant enters the indoor unit to be condensed and heated so as to meet the heating requirement of the indoor unit, and then the condensed refrigerant enters the intermediate heat exchanger serving as an evaporator to be evaporated and released heat after being converged.
In this embodiment, when the solar water heating system cannot meet the hot water demand, the air conditioning system may be turned on to assist in heating hot water.
The technical effect achieved after the technical scheme is adopted is as follows: when the solar water heating system cannot meet the hot water requirement, the air conditioning system can be started to assist in heating water, and the intermediate heat exchanger is used for heating water in the heat collecting water tank, so that the problems that the water temperature in the heat collecting water tank is low due to insufficient solar energy, and the solar energy collected by the solar water heating system cannot meet the hot water requirement are solved.
In this embodiment, when the solar water heating system cannot meet the hot water demand, the first electromagnetic valve is closed, and the second electromagnetic valve is opened, so that the refrigerant discharged from the compressor enters the intermediate heat exchanger to be condensed and release heat, and the condensed refrigerant enters the outdoor heat exchanger to be evaporated and absorb heat.
The technical effect achieved after the technical scheme is adopted is as follows: when the solar water heating system can not meet the hot water requirement, the high-pressure refrigerant discharged by the compressor can enter the intermediate heat exchanger for condensation and heating in a mode of closing the first electromagnetic valve and opening the second electromagnetic valve, the condensed refrigerant enters the outdoor heat exchanger for evaporation and heat absorption, so that the indoor unit can be controlled to be kept in a closed state while the hot water requirement is met, and the condition that the indoor side is subjected to temperature fluctuation caused by hot water production of the air conditioning system is avoided.
An embodiment of the present invention provides an air conditioner, where the air conditioner includes the integrated air conditioning system according to any one of the foregoing embodiments, and the air conditioner implements the control method of the integrated air conditioning system according to any one of the foregoing embodiments.
In summary, the above embodiments of the present application may have one or more of the following advantages or beneficial effects:
(1) The solar water heating system is additionally provided with the intermediate heat exchanger capable of exchanging heat with the solar water heating system, so that the solar water heating system can exchange heat with the air conditioning system, the refrigerant flow path of the air conditioning system can be intelligently controlled by adjusting the first four-way valve, the second four-way valve, the first electromagnetic valve and the second electromagnetic valve, the running state of the air conditioning system is switched, the indoor refrigeration requirement, the indoor heating requirement, the outdoor heat exchanger defrosting requirement and the heating water requirement are met, and the complementation of solar energy and electric energy is realized.
(2) When the integrated air conditioning system operates in refrigeration and hot water production, if the water temperature is smaller than the water temperature threshold value, the water temperature in the current heat collecting water tank is lower, the condensation effect of the intermediate heat exchanger is better, the indoor refrigeration requirement of the air conditioning system can be met, the outdoor heat exchanger does not need to be opened, and therefore the first electromagnetic valve is controlled to be kept closed. If the water temperature is greater than or equal to the water temperature threshold value, it is indicated that the water temperature in the current heat collection water tank is higher, the difficulty in heat exchange between the intermediate heat exchanger and the heat collection water tank is increased, and the condensation effect of the intermediate heat exchanger is deteriorated, so that the outdoor heat exchanger needs to be opened in a mode of opening the first electromagnetic valve, a part of high-pressure refrigerant enters the outdoor heat exchanger to be condensed and radiated, the indoor refrigeration requirement is met through the double condensers, and the indoor refrigeration effect of the air conditioning system is prevented from being influenced.
(3) When the integrated air-conditioning system is operated in a defrosting mode, the air-conditioning system does not need to be switched from a heating operation mode to a cooling operation mode, and the indoor unit can be continuously used as a condenser to perform condensation and heating, so that the problem that the temperature fluctuation of an indoor room is large due to the fact that the air-conditioning system is switched to the operation mode is avoided, and the use comfort of a user is improved.
(4) When the solar water heating system can not meet the hot water requirement, the high-pressure refrigerant discharged by the compressor can enter the intermediate heat exchanger for condensation and heat release in a mode of closing the first electromagnetic valve and opening the second electromagnetic valve, the condensed refrigerant enters the outdoor heat exchanger for evaporation and heat absorption, so that the indoor unit can be controlled to be kept in a closed state while the hot water requirement is met, and the condition that the indoor side is subjected to temperature fluctuation caused by hot water heating of the air conditioning system is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an integrated air conditioning system.
Fig. 2 is a schematic diagram of a circulation loop when the integrated air conditioning system operates in cooling and heating water.
Fig. 3 is a schematic diagram of a circulation loop during the operation of refrigeration and heating water when the water temperature of the integrated air conditioning system is too high.
Fig. 4 is a schematic diagram of a circulation loop during heating and hot water production operations of the integrated air conditioning system.
Fig. 5 is a schematic diagram of a circulation loop when the integrated air conditioning system is operated for heating and defrosting.
Fig. 6 is a schematic view of a circulation loop when the integrated air conditioning system is operated to produce hot water.
Description of the main element symbols:
1. a solar heat collector; 2. a heat collecting water tank; 3. a circulation pump; 10. a compressor; 20. an intermediate heat exchanger; 30. an outdoor heat exchanger; 40. an indoor unit; 51. a first four-way valve; 52. a second four-way valve; 61. a first solenoid valve; 62. a second solenoid valve; 70. an electronic expansion valve of the water tank; 80. outdoor electronic expansion valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
[ first embodiment ] A method for manufacturing a semiconductor device
Referring to fig. 1, an integrated air conditioning system according to a first embodiment of the present invention is provided. This integration air conditioning system includes: solar water heating system and air conditioning system.
The air conditioning system includes: a compressor 10, an intermediate heat exchanger 20, an outdoor heat exchanger 30, an indoor unit 40, a first four-way valve 51, a second four-way valve 52, a first solenoid valve 61, and a second solenoid valve 62; the intermediate heat exchanger 20 can exchange heat with a solar water heating system; the outdoor heat exchanger 30 and the indoor unit 40 are connected to the compressor 10 through a first four-way valve 51; the outdoor heat exchanger 30 and the intermediate heat exchanger 20 are connected to the compressor 10 via a second four-way valve 52; the first solenoid valve 61 is disposed between the outdoor heat exchanger 30 and the first four-way valve 51, and the second solenoid valve 62 is disposed between the outdoor heat exchanger 30 and the second four-way valve 52.
It can be understood that, by additionally arranging the intermediate heat exchanger 20 capable of exchanging heat with the solar water heating system in the air conditioning system, the solar system can exchange heat with the air conditioning system, and by adjusting the modes of the first four-way valve 51, the second four-way valve 52, the first electromagnetic valve 61 and the second electromagnetic valve 62, the refrigerant flow path of the air conditioning system can be intelligently controlled, the operation state of the air conditioning system can be switched, the indoor refrigeration requirement, the indoor heating requirement, the outdoor heat exchanger defrosting requirement and the heating water requirement can be met, and the complementation between solar energy and electric energy can be realized.
The air conditioning system further includes, for example: a tank electronic expansion valve 70 and an outdoor electronic expansion valve 80. The tank electronic expansion valve 70 is disposed between the intermediate heat exchanger 20 and the indoor unit 40, and the outdoor electronic expansion valve 80 is disposed between the outdoor heat exchanger 30 and the indoor unit 40.
Solar water heating systems include, for example: the solar heat collector comprises a solar heat collector 1, a heat collecting water tank 2 and a circulating pump 3. Wherein, the intermediate heat exchanger 20 is disposed in the heat collecting water tank 2, and the intermediate heat exchanger 20 can exchange heat with the heat collecting water tank 2.
It can be understood that the solar heat collector 1 can collect solar energy, and the cold water in the heat collecting water tank 2 is heated by the solar energy; the circulating pump 3 can pump the water in the heat collecting water tank 2 into the solar heat collector 1 to maintain the circulating operation of the solar system. Because the intermediate heat exchanger 20 can exchange heat with the heat collecting water tank 2, when the solar energy is insufficient, the water temperature in the heat collecting water tank 2 can be increased by using the intermediate heat exchanger 20, and the auxiliary hot water making of the air conditioning system is realized; when the air conditioning system is operated in a defrosting mode, the heat in the heat collecting water tank 2 can be used for maintaining the heating operation of the indoor unit 40, and the air conditioning system does not need to be switched from the heating mode to the cooling mode.
[ second embodiment ]
A second embodiment of the present invention provides a control method of an integrated air conditioning system for controlling any one of the integrated air conditioning systems as provided in the first embodiment, the control method of the integrated air conditioning system including: when the integrated air conditioning system is in heating operation, the refrigerant discharged from the compressor 10 preferentially enters the indoor unit 40.
It can be understood that, when the integrated air conditioning system is operated for heating, the refrigerant discharged from the compressor 10 preferentially enters the indoor unit 40 for condensation and heating, and the condensation heat generated by the air conditioning system is preferentially used for heating the indoor unit 40, so that the normal heating process of the air conditioning system can be prevented from being affected by the heating water.
In one embodiment, in conjunction with fig. 4, when the integrated air conditioning system is operating with heating water, there are two situations: the first situation is as follows: the air conditioning system operates according to a conventional air conditioning mode, and only the solar water heating system is used for heating water. The specific flow paths of the air conditioning system are as follows: the refrigerant flows out of the compressor 10, enters from the port a of the first four-way valve 51, flows out from the port D of the first four-way valve 51, enters the indoor unit 40 for condensation and heating, flows out of the indoor unit 40, passes through the outdoor electronic expansion valve 80, enters the outdoor heat exchanger 30 for evaporation, passes through the first solenoid valve 61, enters from the port B of the first four-way valve 51, flows out of the port C of the first four-way valve 51, and finally returns to the compressor 10.
Case two: the air conditioner heating requirement is met, and surplus condensation heat of the air conditioning system is taken to heat water. The specific flow paths of the air conditioning system are as follows: the refrigerant coming out of the compressor 10 is divided into two paths, wherein one path of refrigerant enters from the port A of the second four-way valve 52 and flows out from the port B of the second four-way valve 52, and then enters the intermediate heat exchanger 20 for condensation and heating; the other path of refrigerant enters from the port A of the first four-way valve 51, flows out from the port D of the first four-way valve 51, enters the indoor unit 40 for condensation and heating, then is converged by the two paths of refrigerant, enters the outdoor heat exchanger 30 for evaporation after being throttled by the outdoor electronic expansion valve 80, flows out of the outdoor heat exchanger 30 and is divided into two paths, one path of refrigerant enters from the port D of the second four-way valve 52 through the second electromagnetic valve 62, flows out of the port C of the second four-way valve 52 and returns to the compressor 10; the other refrigerant enters from the port B of the first four-way valve 51 through the first solenoid valve 61, flows out from the port C of the first four-way valve 51, and returns to the compressor 10.
It can be understood that when the integrated air conditioning system is operated for heating and heating water, the condensation heat of the air conditioning system preferentially satisfies the heating requirement of the indoor unit 40. Only when the heating requirement of the indoor unit 40 is met and surplus condensation heat exists, the intermediate heat exchanger 20 is switched through pressure difference, the solar water heating system is assisted, the water heating capacity is improved, and the system energy efficiency is improved.
Further, when the integrated air conditioning system is operated in a defrosting mode, the indoor unit 40 continuously heats.
It can be understood that, when the integrated air conditioning system is operated in a defrosting mode, the air conditioning system does not need to be switched from a heating operation mode to a cooling operation mode, and the indoor unit 40 can be continuously used as a condenser to perform condensation and heating, so that the problem that the temperature fluctuation of the indoor room is large due to the fact that the air conditioning system is switched to the operation mode is avoided, and the use comfort of a user is improved.
Further, when the integrated air conditioning system operates in a defrosting mode, the first electromagnetic valve 61 is closed, and the second electromagnetic valve 62 is opened, so that a part of the refrigerant discharged by the compressor 10 enters the outdoor heat exchanger 30 to be defrosted, the other part of the refrigerant enters the indoor unit 40 to be condensed and heated, and the condensed refrigerant is merged and then enters the intermediate heat exchanger 20 to be evaporated and release heat.
It can be understood that, when the integrated air conditioning system is operated in a defrosting mode, the high-pressure refrigerant discharged by the compressor 10 can be divided into two paths by closing the first electromagnetic valve 61 and opening the second electromagnetic valve 62, one path of refrigerant enters the outdoor heat exchanger 30 for condensation and heat release to meet the defrosting requirement of the outdoor heat exchanger 30, the other path of refrigerant enters the indoor unit 40 for condensation and heat generation to meet the heating requirement of the indoor unit 40, and then the condensed refrigerant enters the intermediate heat exchanger 20 serving as an evaporator for evaporation and heat release after being converged.
In an embodiment, referring to fig. 5, when the integrated air conditioning system operates for heating and defrosting, the intermediate heat exchanger 20 acts as an evaporator, and performs evaporation and heat absorption to meet the defrosting requirement of the outdoor heat exchanger 30 and the heating requirement of the indoor unit. The specific flow paths of the air conditioning system are as follows: the refrigerant coming out of the compressor 10 is divided into two paths, wherein one path of refrigerant enters from the port a of the second four-way valve 52, flows out from the port D of the second four-way valve 52, enters the outdoor heat exchanger 30 through the second electromagnetic valve 62, is condensed and releases heat, and defrosts the outdoor heat exchanger 30; the other refrigerant enters from the port a of the first four-way valve 51, flows out from the port D of the first four-way valve 51, and enters the indoor unit 40 to be condensed and heated. The two paths of liquid refrigerants after the cold condensation are converged, and then throttled by the tank electronic expansion valve 70, enter the intermediate heat exchanger 20 to be evaporated and absorb heat, and the evaporated refrigerant enters from the port B of the second four-way valve 52, flows out from the port C of the second four-way valve 52, and returns to the compressor 10. The first solenoid valve 61 remains closed during this process.
Further, the control method of the integrated air conditioning system further comprises the following steps: receiving a refrigeration instruction; closing the first solenoid valve 61 and the second solenoid valve 62; acquiring the water temperature in the heat collection water tank 2; and controlling the on-off of the first electromagnetic valve 61 according to the relationship between the water temperature and the water temperature threshold value.
It is understood that after the integrated air conditioning system receives a cooling command, the air conditioning system enters a cooling mode, and in order to avoid energy waste caused by direct discharge of condensation heat generated by the air conditioning system to the atmosphere due to the refrigerant entering the outdoor heat exchanger 30 from the first four-way valve 51 or the second four-way valve 52, the first solenoid valve 61 and the second solenoid valve 62 are closed, so that the refrigerant enters the intermediate heat exchanger 20 for condensation and heating. By acquiring the water temperature in the heat collection water tank 2, the condensation capacity of the intermediate heat exchanger 20 can be judged according to the relation between the water temperature in the heat collection water tank 2 and the water temperature threshold, so that the on-off of the first electromagnetic valve 61 can be controlled according to the condensation capacity of the intermediate heat exchanger 20, and different indoor refrigeration requirements can be met.
Further, the controlling the on/off of the first electromagnetic valve 61 according to the magnitude relation between the water temperature and the water temperature threshold value comprises: when the water temperature is lower than the water temperature threshold, the first electromagnetic valve 61 is kept closed, so that the refrigerant discharged from the compressor 10 enters the intermediate heat exchanger 20 for condensation and heating, and the condensed refrigerant enters the indoor unit 40 for evaporation and heat absorption; when the water temperature is greater than or equal to the water temperature threshold value, the first electromagnetic valve 61 is opened, so that a part of the refrigerant discharged from the compressor 10 enters the intermediate heat exchanger 20 for condensation and heating, and the other part enters the outdoor heat exchanger 30 for condensation. Wherein the value range of the water temperature threshold is 30-40 ℃.
It can be understood that, if the water temperature is less than the water temperature threshold, it indicates that the water temperature in the current heat collecting water tank 2 is relatively low, the condensation effect of the intermediate heat exchanger 20 is relatively good, and the indoor refrigeration requirement of the air conditioning system can be met, and the outdoor heat exchanger 30 does not need to be opened, so that the first electromagnetic valve 61 is controlled to be kept closed. If the water temperature is greater than or equal to the water temperature threshold, it indicates that the water temperature in the current heat collection water tank 2 is high, the difficulty of heat exchange between the intermediate heat exchanger 20 and the heat collection water tank 2 is high, and the condensation effect of the intermediate heat exchanger 20 is poor, so that the first electromagnetic valve 61 needs to be opened to open the outdoor heat exchanger 30, so that a part of high-pressure refrigerant enters the outdoor heat exchanger 30 to be condensed and radiated, the indoor refrigeration requirement is met through the double condensers, and the refrigeration effect of the indoor side of the air conditioning system is prevented from being influenced.
In one embodiment, in conjunction with fig. 2 and 3, when the integrated air conditioning system is operating with cooling and heating water, there are two situations:
the first situation is as follows: a single condenser. The first solenoid valve 61 is closed, the second solenoid valve 62 is closed, and the refrigerant does not enter the outdoor heat exchanger 30 to exchange heat, and at this time, the intermediate heat exchanger 20 corresponds to a condenser. The specific flow paths of the air conditioning system are as follows: the refrigerant flows from the compressor 10, enters from the port a of the second four-way valve 52, flows out from the port B of the second four-way valve 52, then enters the intermediate heat exchanger 20 for condensation and heat dissipation, flows out from the intermediate heat exchanger 20, enters the indoor unit 40 for evaporation and cooling, flows out from the indoor unit 40, enters from the port D of the first four-way valve, flows out from the port C of the first four-way valve, and returns to the compressor 10.
The second situation: a double condenser. When the water temperature of the heat collecting water tank 2 is greater than or equal to the water temperature threshold value, that is, the water temperature of the heat collecting water tank 2 is too high, the condensation effect of the intermediate heat exchanger 20 becomes poor, and the refrigeration requirement of the indoor unit 40 cannot be met only by the intermediate heat exchanger 20, so that the first electromagnetic valve 61 is opened. The specific flow paths of the air conditioning system are as follows: the refrigerant from the compressor 10 is divided into two paths, one path of refrigerant enters the outdoor heat exchanger 30 for condensation and heat dissipation, the other path of refrigerant enters the intermediate heat exchanger 20 for condensation and heat dissipation, and then the two paths of refrigerant are converged and enter the indoor unit 40 for evaporation and refrigeration.
It is understood that when the air conditioning system is operated in a cooling mode, the outdoor heat exchanger 30 is a condenser, the refrigerant condenses and dissipates heat in the outdoor heat exchanger 30, and the generated condensation heat is directly discharged to the outside of the room and is not collected and utilized, thereby causing heat waste. Therefore, when the air conditioning system is operated in a cooling mode, the refrigerant discharged from the compressor 10 preferentially enters the intermediate heat exchanger 20 and does not enter the outdoor heat exchanger 30, so that the heat which is originally wasted by flowing through the outdoor heat exchanger 30 can be collected, and the water in the heat collecting water tank 2 can be heated by the intermediate heat exchanger 20. When the water temperature in the heat collecting water tank 2 rises to the water temperature threshold value, the outdoor heat exchanger 30 is communicated to realize the heat exchange of the double condensers so as to ensure the refrigeration effect of the indoor unit 40.
Furthermore, when the solar water heating system cannot meet the hot water requirement, the air conditioning system can be started to assist in heating water.
It can be understood that when the solar water heating system can not meet the hot water requirement, the air conditioning system can be started to assist in heating water, and the intermediate heat exchanger 20 is utilized to heat water in the heat collecting water tank 2, so that the problems that the water temperature in the heat collecting water tank 2 is low due to insufficient solar energy and the solar energy collected by the solar water heating system can not meet the hot water requirement can be avoided.
Further, when the solar water heating system cannot meet the hot water demand, the first electromagnetic valve 61 is closed, and the second electromagnetic valve 62 is opened, so that the refrigerant discharged from the compressor 10 enters the intermediate heat exchanger 20 to be condensed and heated, and the condensed refrigerant enters the outdoor heat exchanger 30 to be evaporated and absorb heat.
It can be understood that, when the solar water heating system cannot meet the hot water demand, the high-pressure refrigerant discharged from the compressor 10 can enter the intermediate heat exchanger 20 to condense and release heat by closing the first electromagnetic valve 61 and opening the second electromagnetic valve 62, and the condensed refrigerant enters the outdoor heat exchanger 30 to evaporate and absorb heat, so that the indoor unit 40 is controlled to be kept in a closed state while the hot water demand is met, and temperature fluctuation at the indoor side caused by hot water production of the air conditioning system is avoided.
In one embodiment, with reference to fig. 6, when the integrated air conditioning system operates to produce hot water, the solar water heating system is used as a heat source for producing hot water, and when the solar energy is insufficient and cannot meet the requirement for producing hot water, the air conditioning system is turned on to assist in producing hot water, so as to improve the comfort of use. The specific flow paths of the air conditioning system are as follows: the high-temperature and high-pressure refrigerant gas discharged from the compressor 10 enters from the port a of the second four-way valve 52, flows out from the port B of the second four-way valve 52, then enters the intermediate heat exchanger 20 to be condensed and release heat, heats the domestic hot water in the hot water collecting tank 2, changes into liquid refrigerant after flowing out from the intermediate heat exchanger 20, flows through the outdoor electronic expansion valve 80, enters the outdoor heat exchanger 30 to be evaporated and absorb heat, flows out from the outdoor heat exchanger 30, passes through the second electromagnetic valve 62, then enters from the port D of the second four-way valve 52, flows out from the port C of the second four-way valve 52, and returns to the compressor 10. The second solenoid valve 62 is opened and the first solenoid valve 61 remains closed during this process.
[ third embodiment ]
A third embodiment of the present invention provides an air conditioner including any one of the integrated air conditioning systems provided in the first embodiment of the present invention, and capable of implementing the control method of any one of the integrated air conditioning systems provided in the second embodiment of the present invention.
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. The utility model provides an integrated air conditioning system which characterized in that, integrated air conditioning system includes solar water heating system and air conditioning system, air conditioning system includes: a compressor (10), a first four-way valve (51), a second four-way valve (52), an intermediate heat exchanger (20), an outdoor heat exchanger (30), an indoor unit (40), a first electromagnetic valve (61) and a second electromagnetic valve (62); wherein the intermediate heat exchanger (20) can exchange heat with the solar water heating system; the outdoor heat exchanger (30) and the indoor unit (40) are connected with the compressor (10) through the first four-way valve (51); the outdoor heat exchanger (30) and the intermediate heat exchanger (20) are connected with the compressor (10) through the second four-way valve (52); the first solenoid valve (61) is disposed between the outdoor heat exchanger (30) and the first four-way valve (51), and the second solenoid valve (62) is disposed between the outdoor heat exchanger (30) and the second four-way valve (52).
2. The integrated air conditioning system of claim 1, wherein the solar water heating system comprises: the solar heat collector (1), the circulating pump (3) and the heat collecting water tank (2); wherein the intermediate heat exchanger (20) is capable of exchanging heat with the heat collecting water tank (2).
3. A control method of an integrated air conditioning system, wherein the control method of the integrated air conditioning system is used for controlling the integrated air conditioning system according to any one of claims 1 to 2, and the control method of the integrated air conditioning system comprises:
receiving a refrigeration instruction;
closing the first solenoid valve (61) and the second solenoid valve (62);
acquiring the water temperature in the heat collection water tank (2);
and controlling the on-off of the first electromagnetic valve (61) according to the relation between the water temperature and the water temperature threshold value.
4. The control method of the integrated air conditioning system according to claim 3, wherein the controlling the on/off of the first solenoid valve (61) according to the magnitude relation between the water temperature and the water temperature threshold value comprises:
when the water temperature is smaller than the water temperature threshold value, the first electromagnetic valve (61) is kept closed, so that the refrigerant discharged by the compressor (10) enters the intermediate heat exchanger (20) for condensation and heat dissipation, and the condensed refrigerant enters the indoor unit (40) for evaporation and heat absorption;
when the water temperature is larger than or equal to the water temperature threshold value, the first electromagnetic valve (61) is opened, so that one part of the refrigerant discharged by the compressor (10) enters the intermediate heat exchanger (20) for condensation, and the other part of the refrigerant enters the outdoor heat exchanger (30) for condensation.
5. The integrated air conditioning system control method according to claim 3, further comprising:
when the integrated air conditioning system is in heating operation, the refrigerant discharged from the compressor (10) preferentially enters the indoor unit (40).
6. The integrated air conditioning system control method according to claim 3, further comprising:
when the integrated air conditioning system is in defrosting operation, the indoor unit (40) continuously heats.
7. The control method of an integrated air conditioning system according to claim 6,
when the integrated air conditioning system is in defrosting operation, the first electromagnetic valve (61) is closed, the second electromagnetic valve (62) is opened, so that one part of the refrigerant discharged by the compressor (10) enters the outdoor heat exchanger (30) for defrosting, the other part of the refrigerant enters the indoor unit (40) for condensing and heating, and the condensed refrigerant is converged and then enters the intermediate heat exchanger (20) for evaporation and heat absorption.
8. The integrated air conditioning system control method according to claim 3, further comprising:
when the solar water heating system cannot meet the hot water requirement, the air conditioning system can be started to assist in heating water.
9. The integrated air conditioning system control method according to claim 8,
when the solar water heating system cannot meet the hot water requirement, the first electromagnetic valve (61) is closed, the second electromagnetic valve (62) is opened, so that the refrigerant discharged by the compressor (10) enters the intermediate heat exchanger (20) to be condensed and release heat, and the condensed refrigerant enters the outdoor heat exchanger (30) to be evaporated and absorb heat.
10. An air conditioner, characterized in that the air conditioner comprises an integrated air conditioning system as claimed in any one of claims 1 to 2, and the air conditioner implements a control method of the integrated air conditioning system as claimed in any one of claims 3 to 9.
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| CN112594871A (en) * | 2020-12-31 | 2021-04-02 | 广东积微科技有限公司 | Defrosting control method of multifunctional multi-split system with double four-way valves |
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| JPH05231747A (en) * | 1992-02-25 | 1993-09-07 | Sanyo Electric Co Ltd | Air conditioner |
| WO2014010767A1 (en) * | 2012-07-12 | 2014-01-16 | (주)센도리 | Dualistic solar heat and heat accumulation system air-conditioning device |
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| CN115371284B (en) | 2023-03-28 |
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