CN115234963A - EVI heat pump trigeminy supplies system - Google Patents
EVI heat pump trigeminy supplies system Download PDFInfo
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- CN115234963A CN115234963A CN202210741978.8A CN202210741978A CN115234963A CN 115234963 A CN115234963 A CN 115234963A CN 202210741978 A CN202210741978 A CN 202210741978A CN 115234963 A CN115234963 A CN 115234963A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/18—Hot-water central heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
- F24D19/1039—Arrangement or mounting of control or safety devices for water heating systems for central heating the system uses a heat pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/001—Compression cycle type
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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
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
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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
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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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
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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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/12—Hot water central heating systems using heat pumps
Abstract
The invention relates to the technical field of heat pumps, in particular to an EVI heat pump triple co-generation system. The system comprises a compressor, a first heat exchanger, an electronic four-way reversing valve, a finned heat exchanger, a flash tank, an economizer, a liquid storage device, a second heat exchanger, a gas-liquid separator and an electric control main board which are sequentially connected to form a refrigerant main loop; the third port of the electric control main board is communicated with the third port of the flash tank through a cooling pipeline, the second port of the electric control main board is communicated with the outlet end of the liquid storage device through a second cooling pipeline, the fourth port of the electric control main board is communicated with the first port of the flash tank through a fourth pipeline, and the first port of the electric control main board is communicated with the third port of the economizer through a fifth pipeline; the first port of the economizer is communicated with the second port of the flash tank through a sixth pipeline, and the fourth port of the economizer is communicated with the fourth port of the flash tank through an eighth pipeline. This system carries out high-efficient tonifying qi through flash tank + economic ware and increases the enthalpy to can effectively cool off automatically controlled mainboard through flash tank and reservoir.
Description
Technical Field
The invention relates to the technical field of heat pumps, in particular to an EVI heat pump triple co-generation system.
Background
The heat pump is a high-efficiency energy-saving device which makes full use of low-grade heat energy. Heat can be transferred spontaneously from a high temperature object to a low temperature object, but not in the opposite direction. The working principle of the heat pump is a mechanical device which forces heat to flow from a low-temperature object to a high-temperature object in a reverse circulation mode, and the heat pump can obtain larger heat supply amount only by consuming a small amount of reverse circulation net work, and can effectively utilize low-grade heat energy which is difficult to apply to achieve the purpose of energy conservation.
The heat pump system is used for preparing hot water at the earliest time, the heat pump system is good in performance in the heating field, but the heat pump needs to be further optimized in the refrigerating field and needs to be enhanced in the heating field, meanwhile, the development prospect of the heat pump is good at present, and the requirements of large and medium-sized heat pumps are increased day by day, so that the integration degree and the complexity of an electric control system are high, and heat dissipation in the operation process needs to be reduced in time.
Furthermore, the compressor discharge temperature is too high, which also needs to be taken into account in the various modes of heat pump operation.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide an EVI heat pump triple co-generation system, in which a flash tank and an economizer system are used to perform efficient air supply and enthalpy increase, and perform secondary compression on refrigerant vapor, so as to improve the compression efficiency of a compressor, and both the heating and heating modes of the system adopt air supply and enthalpy increase, so as to improve the high-temperature cooling and low-temperature heating capabilities, and in particular, the flash tank system has a further gas-liquid separation effect, thereby effectively reducing the liquid return phenomenon of the compressor. In addition, a two-stage refrigerant cooling system is arranged, and the electric control system can be effectively cooled. Moreover, the system can produce domestic hot water throughout the year.
In order to achieve the purpose, the invention adopts the following technical scheme: the system comprises a compressor, a first heat exchanger, an electronic four-way reversing valve, a finned heat exchanger, a flash tank, an economizer, a liquid storage device, a second heat exchanger and a gas-liquid separator which are sequentially connected to form a refrigerant main loop; wherein:
the electronic four-way reversing valve comprises a control valve port D, a control valve port S, a control valve port E and a control valve port C; an exhaust port of the compressor is communicated with a refrigerant inlet end of the first heat exchanger, an air suction port of the compressor is communicated with an outlet end of the gas-liquid separator, a refrigerant outlet end of the first heat exchanger is communicated with a control valve port D, a control valve port C is communicated with a first port of the fin heat exchanger, a control valve port S is communicated with an inlet end of the gas-liquid separator, and a control valve port E is communicated with a first port of the second heat exchanger;
a second port of the fin heat exchanger is connected with a main pipeline, and the main pipeline is connected with a first pipeline communicated with an inlet end of a liquid storage device; the inlet end of the liquid storage device is also connected with a third pipeline which is communicated with a second port of the second heat exchanger; the tail end of the main pipeline is connected with a second pipeline, and the other end of the second pipeline is connected to the third pipeline;
the heat pump triple co-generation system further comprises an electric control main board, a third port of the electric control main board is communicated with a third port of the flash tank through a first cooling pipeline, a second port of the electric control main board is communicated with an outlet end of the liquid reservoir through a second cooling pipeline, a fourth port of the electric control main board is communicated with a first port of the flash tank through a fourth pipeline, and the first port of the electric control main board is communicated with a third port of the economizer through a fifth pipeline;
the first port of the economizer is communicated with the second port of the flash tank through a sixth pipeline, a seventh pipeline is connected between the second port of the economizer and the fifth pipeline, and the fourth port of the economizer is communicated with the fourth port of the flash tank through an eighth pipeline;
the first port of the electric control main board is communicated with the second port of the electric control main board;
the first port of the economizer is communicated with the third port of the economizer, and the second port of the economizer is communicated with the fourth port of the economizer;
a ninth pipeline is arranged between the second pipeline and the fourth pipeline;
the fourth pipeline is connected with a refrigerant air supplementing pipe communicated with the middle cavity of the compressor;
the heat pump triple co-generation system comprises a hot water heating mode, a heating mode and a refrigerating mode.
Preferably, the system further comprises a first check valve which is arranged at the tail end of the main pipeline and is suitable for the unidirectional flow of the refrigerant from the first port of the flash tank to the second port of the fin heat exchanger through the ninth pipeline along the fourth pipeline; the fourth check valve is arranged on the fifth pipeline and is suitable for the unidirectional flow of the refrigerant from the first port of the electric control main board to the third port of the economizer; and the fifth one-way valve is arranged on the third pipeline, is positioned between the joint of the second pipeline and the third pipeline and the inlet end of the liquid reservoir, and is suitable for the one-way flow of the refrigerant from the main pipeline to the inlet end of the liquid reservoir through the first pipeline.
Preferably, the filter further comprises a first filter and a second filter; the first filter is arranged on the eighth pipeline and is suitable for filtering the refrigerant from the fourth port of the economizer to the fourth port of the flash tank; the second filter is arranged on the fifth pipeline and is suitable for filtering the refrigerant coming out of the first port of the economizer.
Preferably, the system further comprises a first electronic expansion valve, a second electronic expansion valve and a third electronic expansion valve; the first electronic expansion valve is arranged on the eighth pipeline and is positioned between the first filter and the fourth port of the flash tank; the second electronic expansion valve is arranged on the fourth pipeline and is positioned between the joint of the second pipeline and the ninth pipeline and the first port of the flash tank; and the third electronic expansion valve is arranged on the fifth pipeline and is positioned between the fourth check valve and the third port of the economizer.
Preferably, the device further comprises a first throttling capillary tube which is arranged on the fifth pipeline and is positioned between the joint of the fifth pipeline and the seventh pipeline and the fourth one-way valve.
Preferably, the heat pump triple co-generation system is in a heating mode, the control valve port D is communicated with the control valve port E, the control valve port S is communicated with the control valve port C, and the refrigerant sequentially passes through an exhaust port of the compressor, the first heat exchanger, the control valve port D, the control valve port E, the second heat exchanger, the fifth check valve, the reservoir, the electronic control mainboard and the second filter and is divided into a main refrigerant and an auxiliary refrigerant, wherein:
the main path refrigerant sequentially passes through the economizer, the first filter, the first electronic expansion valve, the flash tank, the second electronic expansion valve, the first check valve, the finned heat exchanger, the control valve port C, the control valve port S, the gas-liquid separator and the suction port of the compressor along a seventh pipeline;
the auxiliary refrigerant continuously flows along the fifth pipeline and sequentially passes through the capillary throttle pipe, the fourth one-way valve, the third electronic expansion valve, the third port of the economizer, the first port of the economizer, the refrigerant air supplement pipe and the middle cavity of the compressor.
Preferably, the heat exchanger further comprises a second check valve which is arranged on the first pipeline and is suitable for the unidirectional flow of the refrigerant from the fin heat exchanger to the liquid reservoir; and the sixth one-way valve is arranged on the second pipeline and is suitable for the one-way flow of the refrigerant from the flash tank to the second heat exchanger.
Preferably, the heat pump triple co-generation system is in a refrigeration mode, the control valve port D is communicated with the control valve port C, the control valve port S is communicated with the control valve port E, and the first check valve and the fifth check valve are closed; the refrigerant passes through compressor gas vent, first heat exchanger, control valve port D, control valve port C, finned heat exchanger, second check valve, reservoir, automatically controlled mainboard, second filter in proper order and falls into main road refrigerant and auxiliary road refrigerant, wherein:
the main path refrigerant sequentially passes through the economizer, the first filter, the first electronic expansion valve, the flash tank, the second electronic expansion valve, the seventh pipeline, the second pipeline, the sixth check valve, the second heat exchanger, the control valve port E, the control valve port S, the gas-liquid separator and the air suction port of the compressor along the seventh pipeline;
and the auxiliary refrigerant continuously flows along the fifth pipeline and sequentially passes through the capillary throttle pipe, the fourth one-way valve, the third electronic expansion valve, the third port of the economizer, the first port of the economizer, the refrigerant air supplementing pipe and the middle cavity of the compressor.
Preferably, the flash tank further comprises an electromagnetic valve, a third one-way valve, a second throttling capillary tube and a seventh one-way valve, wherein the electromagnetic valve is arranged on a sixth pipeline, the third one-way valve is arranged on the sixth pipeline, is positioned between the electromagnetic valve and the joint of the sixth pipeline and the refrigerant air supplement pipe, and is suitable for unidirectional flow of the refrigerant from the flash tank to the refrigerant air supplement pipe;
the third port of the electric control main board is communicated with the fourth port of the electric control main board; the second throttling capillary tube is arranged on the fourth pipeline and is positioned between the joint of the ninth pipeline and the fourth port of the electric control main board; the seventh check valve is arranged on the cooling pipeline, and the flash tank, the seventh check valve, the electric control main board and the second throttling capillary form a cooling loop.
Preferably, the heat exchanger further comprises an electric heating water tank arranged on the side part of the first heat exchanger, the electric heating water tank is provided with a water tank water inlet and a water tank water outlet, the first heat exchanger is provided with a first heat exchanger water outlet and a first heat exchanger water inlet, and the second heat exchanger is provided with a second heat exchanger water outlet and a second heat exchanger water inlet;
the electric heating water tank pipeline is sequentially connected with a water tank water inlet, a water tank water outlet, a first heat exchanger water inlet, a first heat exchanger water outlet, a second heat exchanger water inlet and a second heat exchanger water outlet; an electromagnetic control valve is further arranged on a pipeline between the water inlet of the water tank and the water inlet of the first heat exchanger and is suitable for controlling and adjusting the temperature of the electrically heated water tank;
the heat pump trigeminy supplies the system to be in the mode of heating water, and control valve port D and control valve port E intercommunication, wherein:
the refrigerant passes through an exhaust port of the compressor, the first heat exchanger, the control valve port D, the control valve port E and the second heat exchanger; at the moment, the pipeline between the electric heating water tank and the first heat exchanger is filled with water to exchange heat with the refrigerant to prepare hot water; the water inlet of the second heat exchanger is used for feeding water, the water outlet of the second heat exchanger is used for discharging water, and the water and the electric heating water tank form hot water circulation.
By adopting the technical scheme, the EVI heat pump triple co-generation system has three modes of heating, refrigerating and heating water. The system can produce domestic hot water throughout the year by independently controlling the three modes.
In the heating and refrigerating modes, the air is supplied from the second port of the flash tank through the electromagnetic valve, the third one-way valve and the refrigerant air supply pipe, and the air is supplied from the liquid storage device through the electric control main board, the economizer, the first throttling capillary tube, the fourth one-way valve, the third electronic expansion valve, the third port of the economizer, the first port of the economizer and the refrigerant air supply pipe.
In addition, due to the arrangement of the flash tank, the seventh one-way valve, the first cooling pipeline, the electric control main board and the second throttling capillary tube form a cooling loop for cooling the electric control main board. And the liquid storage device, the electric control main board, the second filter and the economizer form another cooling flow path for cooling the electric control main board. The two routes form a two-stage refrigerant cooling system, and the dissipated cold energy can be collected, so that the system is more energy-saving, efficient and high in reliability, the electronic control mainboard can be effectively cooled, and the problem of overhigh temperature due to high load of the electronic control mainboard caused by overhigh integration degree of the heat pump system is prevented.
Moreover, increased first heat exchanger before the cross valve, this heat exchanger can carry out the heat exchange with the electrical heating water tank, the hydrothermal of conventional life of being convenient for prepare to because the hot water of uniform temperature can be prepared to electrical heating water tank self, consequently the electrical heating water tank can adjust and widen hot water supply temperature, improves user's hot water demand temperature upper limit.
The system adopts independent control of heating, refrigerating and heating water, is simple to control and convenient to operate, can meet various requirements of users, has flexible cold and hot demand modes, and has efficient and energy-saving refrigerating, heating and heating water modes.
Drawings
Fig. 1 is a system diagram of an EVI heat pump triple co-generation system.
Fig. 2 is a schematic diagram of refrigerant flow and air supply of an EVI heat pump triple co-generation system in a heating mode.
Fig. 3 is a schematic diagram of refrigerant flow and air supply of an EVI heat pump triple co-generation system in a refrigeration mode.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 3, the EVI heat pump triple co-generation system includes an EVI compressor 1, a first heat exchanger 2, an electronic four-way reversing valve 3, a finned heat exchanger 4, a flash tank 5, an economizer 6, a reservoir 7, a second heat exchanger 8, and a gas-liquid separator 9, which are connected in sequence to form a primary refrigerant loop; wherein:
the electronic four-way reversing valve 3 comprises a control valve port D, a control valve port S, a control valve port E and a control valve port C; an exhaust port 10 of the compressor is communicated with a refrigerant inlet end 11 of the first heat exchanger, a suction port 12 of the compressor is communicated with an outlet end 13 of the gas-liquid separator, the refrigerant outlet end 13 of the first heat exchanger is communicated with a control valve port D, the control valve port C is communicated with a first port 14 of the fin heat exchanger, the control valve port S is communicated with an inlet end 15 of the gas-liquid separator, and the control valve port E is communicated with a first port 16 of the second heat exchanger;
a second port 17 of the fin heat exchanger is connected with a main pipe 18, and the main pipe 18 is connected with a first pipe 19 communicated with an inlet end 20 of a liquid storage device; the inlet end 20 of the reservoir is also connected with a third pipeline 21 which is communicated with a second port 22 of the second heat exchanger; the tail end of the main pipeline 18 is connected with a second pipeline 23, and the other end of the second pipeline 23 is connected to the third pipeline 21;
the heat pump triple co-generation system further comprises an electric control main board 24, a third port 25 of the electric control main board is communicated with a third port 27 of the flash tank through a first cooling pipeline 26, a second port 28 of the electric control main board is communicated with an outlet end 30 of a liquid storage device through a second cooling pipeline 29, a fourth port 31 of the electric control main board is communicated with a first port 33 of the flash tank through a fourth pipeline 32, and a first port 34 of the electric control main board is communicated with a third port 36 of the economizer through a fifth pipeline 35;
the first port 37 of the economizer is communicated with the second port 39 of the flash tank through a sixth pipeline 38, a seventh pipeline 41 is connected between the second port 40 of the economizer and the fifth pipeline 35, and the fourth port 42 of the economizer is communicated with the fourth port 44 of the flash tank through an eighth pipeline 43;
the first port 34 of the electric control main board is communicated with the second port 28 of the electric control main board;
the first economizer port 37 communicating with the third economizer port 36 and the second economizer port 40 communicating with the fourth economizer port 42;
a ninth pipeline 45 is arranged between the second pipeline 23 and the fourth pipeline 32;
a refrigerant air supplementing pipe 46 is connected to the fourth pipeline 32 and communicated with an intermediate cavity 47 of the compressor;
the heat pump triple co-generation system comprises a hot water heating mode, a heating mode and a refrigerating mode.
Further, the system further comprises a first check valve 48, which is arranged at the end of the main pipe 18 and is suitable for the unidirectional flow of the refrigerant from the first port 33 of the flash tank to the second port 17 of the fin heat exchanger through the ninth pipe 45 along the fourth pipe 32; a fourth check valve 49 disposed on the fifth pipeline 35 and adapted to allow the refrigerant to flow in one direction from the first port 34 of the electronic control main board to the third port 36 of the economizer; and a fifth check valve 50, disposed on the third pipe 21 and between the connection between the second pipe 23 and the third pipe 21 and the inlet end 20 of the accumulator, for one-way flow of the refrigerant from the main pipe 18 to the inlet end 20 of the accumulator through the first pipe 19.
Further, the system also includes a first filter 51 and a second filter 52; the first filter 51 is disposed on the eighth pipe 43 and adapted to filter the refrigerant from the fourth port 42 of the economizer to the fourth port 44 of the flash tank; the second filter 52 is disposed on the fifth pipe 35 and adapted to filter the refrigerant coming out of the first port 37 of the economizer.
Further, the system further includes a first electronic expansion valve 53, a second electronic expansion valve 54, and a third electronic expansion valve 55; the first electronic expansion valve 53 is disposed on the eighth pipe 43 and between the first filter 51 and the fourth port 44 of the flash tank; the second electronic expansion valve 54 is arranged on the fourth pipeline 32 and is positioned between the joint of the second pipeline 23 and the ninth pipeline 45 and the first port 33 of the flash tank; the third electronic expansion valve 55 is disposed on the fifth conduit 35 between the fourth check valve 49 and the third port 36 of the economizer.
Further, the system further includes a first throttling capillary 56 disposed in the fifth pipe 35 between a junction of the fifth pipe 35 and the seventh pipe 41 and the fourth check valve 49.
Further, the heat pump triple co-generation system is in a heating mode, the control valve port D is communicated with the control valve port E, the control valve port S is communicated with the control valve port C, and the refrigerant sequentially passes through the exhaust port 10 of the compressor, the first heat exchanger 2, the control valve port D, the control valve port E, the second heat exchanger 8, the fifth check valve 50, the reservoir 7, the electronic control mainboard 24 and the second filter 52 and is divided into a main refrigerant and an auxiliary refrigerant, wherein:
the main path refrigerant passes through the economizer 6, the first filter 51, the first electronic expansion valve 53, the flash tank 5, the second electronic expansion valve 54, the first check valve 48, the fin heat exchanger 4, the control valve port C, the control valve port S, the gas-liquid separator 9 and the suction port 12 of the compressor in sequence along the seventh pipeline 41;
the auxiliary refrigerant continues to flow along the fifth pipeline 35 and sequentially passes through the first throttling capillary tube 56, the fourth check valve 49, the third electronic expansion valve 55, the third port 36 of the economizer, the first port 37 of the economizer, the refrigerant air supplement pipe 46 and the middle cavity 47 of the compressor.
Further, the system further comprises a second check valve 57, which is arranged on the first pipeline 19 and is suitable for the one-way flow of the refrigerant from the fin heat exchanger 4 to the liquid reservoir 7; and a sixth check valve 58 disposed on the second pipe 23 and adapted to check the refrigerant flowing from the flash tank 5 to the second heat exchanger 8.
Further, the heat pump triple co-generation system is in a refrigeration mode, the control valve port D is communicated with the control valve port C, the control valve port S is communicated with the control valve port E, and the first check valve 48 and the fifth check valve 50 are closed; the refrigerant passes through gas vent 10, first heat exchanger 2, control valve port D, control valve port C, finned heat exchanger 4, second check valve 57, reservoir 7, automatically controlled mainboard 24, second filter 52 of compressor in proper order and falls into main road refrigerant and auxiliary road refrigerant, wherein:
the main path refrigerant passes through the economizer 6, the first filter 51, the first electronic expansion valve 53, the flash tank 5, the second electronic expansion valve 54, the seventh pipeline 41, the second pipeline 23, the sixth one-way valve 58, the second heat exchanger 8, the control valve port E, the control valve port S, the gas-liquid separator 9 and the suction port 12 of the compressor in sequence along the seventh pipeline 41;
the auxiliary refrigerant continues to flow along the fifth pipeline 35 and sequentially passes through the first throttling capillary tube 56, the fourth check valve 49, the third electronic expansion valve 55, the third port 36 of the economizer, the first port 37 of the economizer, the refrigerant air supplement pipe 46 and the middle cavity 47 of the compressor.
Further, the system further comprises an electromagnetic valve 59, a third one-way valve 60, a second throttling capillary tube 61 and a seventh one-way valve 62, wherein the electromagnetic valve 59 is arranged on the sixth pipeline 38, and the third one-way valve 60 is arranged on the sixth pipeline 38, is positioned between the electromagnetic valve 59 and the connection position of the sixth pipeline 38 and the refrigerant air supplement pipe 46, and is suitable for unidirectional flow of the refrigerant from the flash tank 5 to the refrigerant air supplement pipe 46;
the third port 25 of the electric control main board is communicated with the fourth port 31 of the electric control main board; the second throttling capillary 61 is arranged on the fourth pipeline 32 and is located between the joint of the ninth pipeline 45 and the fourth pipeline 32 and the fourth port 31 of the electronic control main board; the seventh check valve 62 is disposed on the first cooling pipeline 26, and the flash tank 5, the seventh check valve 62, the electronic control main board 24, and the second throttle capillary 61 form a cooling loop.
Further, the system also comprises an electric heating water tank 63 arranged on the side part of the first heat exchanger 2, wherein the electric heating water tank 63 is provided with a water tank water inlet 64 and a water tank water outlet 65, the first heat exchanger 2 is provided with a first heat exchanger water outlet 66 and a first heat exchanger water inlet 67, and the second heat exchanger 8 is provided with a second heat exchanger water outlet 68 and a second heat exchanger water inlet 69;
the electric heating water tank 63 is sequentially connected with a water tank water inlet 64, a water tank water outlet 65, a first heat exchanger water inlet 67, a first heat exchanger water outlet 66, a second heat exchanger water inlet 69 and a second heat exchanger water outlet 68 through pipelines; an electromagnetic control valve 70 is further arranged on a pipeline between the water tank water inlet 64 and the first heat exchanger water inlet 67 and is suitable for controlling and adjusting the temperature of the electric heating water tank 63;
the heat pump trigeminy supplies the system to be in the mode of heating water, and control valve port D communicates with control valve port E, wherein:
the refrigerant passes through an exhaust port 10 of the compressor, the first heat exchanger 2, a control valve port D, a control valve port E and a second heat exchanger 8; at this time, the pipeline between the electric heating water tank 63 and the first heat exchanger 2 is filled with water to exchange heat with the refrigerant to prepare hot water; the water is fed from the water inlet 69 of the second heat exchanger and is discharged from the water outlet 68 of the second heat exchanger, and the water and the electric heating water tank 63 form a heating water circulation.
In the embodiment, the EVI heat pump triple supply system has three modes of heating, refrigerating and heating water. The system can produce domestic hot water throughout the year by independently controlling the three modes.
Moreover, the flash tank 5 and the economizer 6 are used in the system at the same time, in the heating and cooling modes, the air is supplied from the second port of the flash tank through the electromagnetic valve 59, the third check valve 60 and the refrigerant air supply pipe 46, and the air is supplied from the liquid reservoir 7 through the electric control main board 24, the economizer 6, the first throttling capillary tube 56, the fourth check valve 49, the third electronic expansion valve 55, the third port of the economizer, the first port of the economizer and the refrigerant air supply pipe 46, so that the air is supplied to form a combined air supply and enthalpy increase system, the air supply amount is accurately adjusted, and good air supply and liquid injection switching is performed, so that the heating and cooling efficiency of the system is fully improved, and the compression efficiency of the compressor is improved.
In addition, due to the arrangement of the flash tank 5, a cooling loop for cooling the electronic control main board 24 is formed by the flash tank 5, the seventh check valve 62, the first cooling pipeline 26, the electronic control main board 24 and the second throttling capillary 61. And the liquid storage device 7, the electric control main board 24, the second filter and the economizer 6 form another cooling flow path for cooling the electric control main board 24. The two routes form a two-stage refrigerant cooling system, and dissipated cold energy can be collected, so that the system is more energy-saving, efficient and high in reliability, the electronic control main board 24 can be effectively cooled, and the problem of overhigh temperature due to high load of the electronic control main board caused by overhigh integration degree of the heat pump system is prevented.
Furthermore, increased first heat exchanger 2 before the cross valve, this heat exchanger can carry out the heat exchange with electrical heating water tank 63, the preparation of the conventional life hot water of being convenient for to because electrical heating water tank 63 self can prepare the hot water of uniform temperature, consequently electrical heating water tank 63 can adjust and widen hot water supply temperature, improves user's hot water demand temperature upper limit.
The system adopts independent control of heating, refrigerating and heating water, is simple to control and convenient to operate, can meet various requirements of users, has flexible cold and hot demand modes, and has efficient and energy-saving refrigerating, heating and heating water modes.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.
Claims (10)
1. An EVI heat pump trigeneration system which characterized in that: the system comprises an EVI compressor (1), a first heat exchanger (2), an electronic four-way reversing valve (3), a finned heat exchanger (4), a flash tank (5), an economizer (6), a liquid reservoir (7), a second heat exchanger (8) and a gas-liquid separator (9) which are sequentially connected to form a refrigerant main loop; wherein:
the electronic four-way reversing valve (3) comprises a control valve port D, a control valve port S, a control valve port E and a control valve port C; an exhaust port (10) of the compressor is communicated with a refrigerant inlet end (11) of the first heat exchanger, a suction port (12) of the compressor is communicated with an outlet end (13) of the gas-liquid separator, the refrigerant outlet end (13) of the first heat exchanger is communicated with a control valve port D, the control valve port C is communicated with a first port (14) of the fin heat exchanger, the control valve port S is communicated with an inlet end (15) of the gas-liquid separator, and the control valve port E is communicated with a first port (16) of the second heat exchanger;
a second port (17) of the fin heat exchanger is connected with a main pipeline (18), and a first pipeline (19) communicated with an inlet end (20) of a liquid storage device is connected to the main pipeline (18); the inlet end (20) of the liquid storage device is also connected with a third pipeline (21) which is communicated with a second port (22) of the second heat exchanger; the tail end of the main pipeline (18) is connected with a second pipeline (23), and the other end of the second pipeline (23) is connected to the third pipeline (21);
the heat pump triple co-generation system further comprises an electric control main board (24), a third port (25) of the electric control main board is communicated with a third port (27) of the flash tank through a first cooling pipeline (26), a second port (28) of the electric control main board is communicated with an outlet end (30) of the liquid storage device through a second cooling pipeline (29), a fourth port (31) of the electric control main board is communicated with a first port (33) of the flash tank through a fourth pipeline (32), and a first port (34) of the electric control main board is communicated with a third port (36) of the economizer through a fifth pipeline (35);
the first port (37) of the economizer is communicated with the second port (39) of the flash tank through a sixth pipeline (38), a seventh pipeline (41) is connected between the second port (40) of the economizer and the fifth pipeline (35), and the fourth port (42) of the economizer is communicated with the fourth port (44) of the flash tank through an eighth pipeline (43);
the first port (34) of the electric control main board is communicated with the second port (28) of the electric control main board;
the first port (37) of the economizer is communicated with the third port (36) of the economizer, and the second port (40) of the economizer is communicated with the fourth port (42) of the economizer;
a ninth pipeline (45) is arranged between the second pipeline (23) and the fourth pipeline (32);
a refrigerant air supplementing pipe (46) is connected to the fourth pipeline (32) and communicated with an intermediate cavity (47) of the compressor;
the heat pump triple co-generation system comprises a hot water heating mode, a heating mode and a refrigerating mode.
2. The EVI heat pump triple co-generation system according to claim 1, wherein: the first check valve (48) is arranged at the tail end of the main pipeline (18) and is suitable for the unidirectional flow of the refrigerant from the first port (33) of the flash tank to the second port (17) of the fin heat exchanger along the fourth pipeline (32) through the ninth pipeline (45); the fourth check valve (49) is arranged on the fifth pipeline (35) and is suitable for the unidirectional flow of the refrigerant from the first port (34) of the electric control main board to the third port (36) of the economizer; and the fifth one-way valve (50) is arranged on the third pipeline (21), is positioned between the joint of the second pipeline (23) and the third pipeline (21) and the inlet end (20) of the liquid reservoir, and is suitable for the one-way flow of the refrigerant from the main pipeline (18) to the inlet end (20) of the liquid reservoir through the first pipeline (19).
3. The EVI heat pump triple co-generation system of claim 2, wherein: further comprising a first filter (51) and a second filter (52); the first filter (51) is arranged on the eighth pipeline (43) and is suitable for filtering the refrigerant from the fourth port (42) of the economizer to the fourth port (44) of the flash tank; the second filter (52) is arranged on the fifth pipeline (35) and is suitable for filtering the refrigerant coming out of the first port (37) of the economizer.
4. The EVI heat pump triple co-generation system of claim 3, wherein: the system also comprises a first electronic expansion valve (53), a second electronic expansion valve (54) and a third electronic expansion valve (55); the first electronic expansion valve (53) is arranged on the eighth pipeline (43) and is positioned between the first filter (51) and the fourth port (44) of the flash tank; the second electronic expansion valve (54) is arranged on the fourth pipeline (32) and is positioned between the joint of the second pipeline (23) and the ninth pipeline (45) and the first port (33) of the flash tank; and the third electronic expansion valve (55) is arranged on the fifth pipeline (35) and is positioned between the fourth check valve (49) and the third port (36) of the economizer.
5. The EVI heat pump triple co-generation system according to claim 4, wherein: the device also comprises a first throttling capillary tube (56) which is arranged on the fifth pipeline (35) and is positioned between the connection position of the fifth pipeline (35) and the seventh pipeline (41) and the fourth one-way valve (49).
6. The EVI heat pump triple co-generation system according to claim 5, wherein: the heat pump triple co-generation system is in a heating mode, the control valve port D is communicated with the control valve port E, the control valve port S is communicated with the control valve port C, and a refrigerant sequentially passes through an exhaust port (10) of the compressor, the first heat exchanger (2), the control valve port D, the control valve port E, the second heat exchanger (8), the fifth check valve (50), the liquid reservoir (7), the electric control main board (24) and the second filter (52) and is divided into a main refrigerant and an auxiliary refrigerant, wherein:
the main path refrigerant sequentially passes through an economizer (6), a first filter (51), a first electronic expansion valve (53), a flash tank (5), a second electronic expansion valve (54), a first check valve (48), a fin heat exchanger (4), a control valve port C, a control valve port S, a gas-liquid separator (9) and a suction port (12) of a compressor along a seventh pipeline (41);
the auxiliary refrigerant continuously flows along a fifth pipeline (35) and sequentially passes through a first throttling capillary tube (56), a fourth one-way valve (49), a third electronic expansion valve (55), a third port (36) of the economizer, a first port (37) of the economizer, a refrigerant air supplementing tube (46) and an intermediate cavity (47) of the compressor.
7. The EVI heat pump triple co-generation system according to claim 5, wherein: the second check valve (57) is arranged on the first pipeline (19) and is suitable for the unidirectional flow of the refrigerant from the fin heat exchanger (4) to the liquid reservoir (7); and the sixth check valve (58) is arranged on the second pipeline (23) and is suitable for one-way flow of the refrigerant from the flash tank (5) to the second heat exchanger (8).
8. The EVI heat pump triple co-generation system according to claim 7, wherein: the heat pump triple co-generation system is in a refrigeration mode, a control valve port D is communicated with a control valve port C, a control valve port S is communicated with a control valve port E, and a first check valve (48) and a fifth check valve (50) are closed; the refrigerant passes through gas vent (10), first heat exchanger (2), control valve port D, control valve port C, fin heat exchanger (4), second check valve (57), reservoir (7), automatically controlled mainboard (24), second filter (52) of compressor in proper order and falls into main road refrigerant and auxiliary road refrigerant, wherein:
the main path refrigerant sequentially passes through an economizer (6), a first filter (51), a first electronic expansion valve (53), a flash tank (5), a second electronic expansion valve (54), a seventh pipeline (41), a second pipeline (23), a sixth one-way valve (58), a second heat exchanger (8), a control valve port E, a control valve port S, a gas-liquid separator (9) and a suction port (12) of a compressor along a seventh pipeline (41);
the auxiliary refrigerant continuously flows along a fifth pipeline (35) and sequentially passes through a first throttling capillary tube (56), a fourth one-way valve (49), a third electronic expansion valve (55), a third port (36) of the economizer, a first port (37) of the economizer, a refrigerant air supplementing tube (46) and an intermediate cavity (47) of the compressor.
9. The EVI heat pump triple co-generation system according to claim 1, wherein: the flash tank further comprises an electromagnetic valve (59), a third one-way valve (60), a second throttling capillary tube (61) and a seventh one-way valve (62), wherein the electromagnetic valve (59) is arranged on the sixth pipeline (38), the third one-way valve (60) is arranged on the sixth pipeline (38), is positioned between the connection part of the sixth pipeline (38) and the refrigerant air supplement pipe (46) and the electromagnetic valve (59), and is suitable for unidirectional flow of refrigerant from the flash tank (5) to the refrigerant air supplement pipe (46);
the third port (25) of the electric control main board is communicated with the fourth port (31) of the electric control main board; the second throttling capillary tube (61) is arranged on the fourth pipeline (32) and is positioned between the joint of the ninth pipeline (45) and the fourth pipeline (32) and the fourth port (31) of the electronic control main board; the seventh check valve (62) is arranged on the first cooling pipeline (26), and the flash tank (5), the seventh check valve (62), the electric control main board (24) and the second throttling capillary tube (61) form a cooling loop.
10. The EVI heat pump triple co-generation system according to claim 1, wherein: the heat exchanger is characterized by further comprising an electric heating water tank (63) arranged on the side portion of the first heat exchanger (2), a water tank water inlet (64) and a water tank water outlet (65) are formed in the electric heating water tank (63), a first heat exchanger water outlet (66) and a first heat exchanger water inlet (67) are formed in the first heat exchanger (2), and a second heat exchanger water outlet (68) and a second heat exchanger water inlet (69) are formed in the second heat exchanger (8);
the electric heating water tank (63) is sequentially connected with a water tank water inlet (64), a water tank water outlet (65), a first heat exchanger water inlet (67), a first heat exchanger water outlet (66), a second heat exchanger water inlet (69) and a second heat exchanger water outlet (68) through pipelines; an electromagnetic control valve (70) is further arranged on a pipeline between the water inlet (64) of the water tank and the water inlet (67) of the first heat exchanger and is suitable for controlling and adjusting the temperature of the electric heating water tank (63);
the heat pump trigeminy supplies the system to be in the mode of heating water, and control valve port D communicates with control valve port E, wherein:
the refrigerant passes through an exhaust port (10) of the compressor, a first heat exchanger (2), a control valve port D, a control valve port E and a second heat exchanger (8); at the moment, the pipeline between the electric heating water tank (63) and the first heat exchanger (2) is communicated with the refrigerant to carry out heat exchange to prepare hot water; the water is fed from the water inlet (69) of the second heat exchanger, and the water is discharged from the water outlet (68) of the second heat exchanger, and the water and the electric heating water tank (63) form hot water making circulation.
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| CN202210741978.8A CN115234963B (en) | 2022-06-28 | 2022-06-28 | EVI heat pump trigeminy supplies system |
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Cited By (1)
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