CN110595090A - Heat pump system and air conditioner - Google Patents

Heat pump system and air conditioner Download PDF

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Publication number
CN110595090A
CN110595090A CN201910832558.9A CN201910832558A CN110595090A CN 110595090 A CN110595090 A CN 110595090A CN 201910832558 A CN201910832558 A CN 201910832558A CN 110595090 A CN110595090 A CN 110595090A
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CN
China
Prior art keywords
heat
refrigerant
port
heat exchanger
valve port
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910832558.9A
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Chinese (zh)
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CN110595090B (en
Inventor
杨坤
罗彬�
占磊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
Guangdong Midea HVAC Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
GD Midea Heating and Ventilating Equipment Co Ltd
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Priority to CN201910832558.9A priority Critical patent/CN110595090B/en
Publication of CN110595090A publication Critical patent/CN110595090A/en
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Publication of CN110595090B publication Critical patent/CN110595090B/en
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Classifications

    • 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
    • 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
    • F25B39/00—Evaporators; Condensers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
    • F28G13/005—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00 cleaning by increasing the temperature of heat exchange surfaces
    • 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
    • F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
    • F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
    • 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
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/24—Storage receiver heat

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses a heat pump system and an air conditioner. The heat pump system comprises a compressor, a refrigerant heater, a target heat exchanger, a first heat exchange device and a second heat exchange device. The compressor comprises an inlet and an outlet, and the refrigerant heater is connected with the outlet of the compressor. The target heat exchanger is connected with the refrigerant heater, the refrigerant heater is used for heating the refrigerant flowing out of the outlet of the compressor, and the refrigerant heated by the refrigerant heater can be conveyed to the target heat exchanger to sterilize the target heat exchanger. The first heat exchange device and the second heat exchange device are both connected with a target heat exchanger, the first heat exchange device is connected with the target heat exchanger in parallel and then connected with the second heat exchange device in series, and the second heat exchange device is connected with an inlet of the compressor. The first heat exchange device can exchange heat with the gaseous refrigerant to convert the gaseous refrigerant into a liquid refrigerant and provide the liquid refrigerant to the second heat exchange device. The second heat exchange device can exchange heat with the liquid refrigerant to convert the liquid refrigerant into a gaseous refrigerant and provide the gaseous refrigerant to the compressor.

Description

Heat pump system and air conditioner
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to a heat pump system and an air conditioner.
Background
In the refrigeration season, an indoor unit of the air conditioning system operates in a refrigeration mode, and a heat exchanger of the indoor unit is in a high-humidity environment for a long time, so that mold and various harmful bacteria are easy to grow and become a pollution source of indoor air. The self-cleaning technology of the existing indoor machine heat exchanger is limited by the high pressure of the system, and the heat exchanger can be heated to 50 ℃. However, the effective sterilization temperature usually needs 60-70 ℃, and the current technology cannot perform more effective sterilization and cleaning on the internal heat exchanger.
Disclosure of Invention
The invention provides a heat pump system and an air conditioner.
A heat pump system of an embodiment of the present invention is used for an air conditioner, and includes:
a compressor comprising an inlet and an outlet;
a refrigerant heater connected to the outlet;
the target heat exchanger is connected with the refrigerant heater, the refrigerant heater is used for heating the refrigerant flowing out of the outlet, and the refrigerant heated by the refrigerant heater can be conveyed to the target heat exchanger to sterilize the target heat exchanger;
the first heat exchange device and the second heat exchange device are connected with the target heat exchanger in parallel and then connected with the second heat exchange device in series, and the second heat exchange device is connected with the inlet;
the first heat exchange device can exchange heat with a gaseous refrigerant to convert the gaseous refrigerant into a liquid refrigerant and provide the liquid refrigerant to the second heat exchange device;
the second heat exchange device can exchange heat with the liquid refrigerant to convert the liquid refrigerant into a gaseous refrigerant and provide the gaseous refrigerant to the compressor.
Among the foretell heat pump system, the refrigerant heater can heat the refrigerant that flows out from the compressor, by refrigerant heater heating target heat exchanger and first heat transfer device of flowing through, can disinfect to the target heat exchanger when flowing through the target heat exchanger, the liquid refrigerant that forms after the heat transfer with first heat transfer device can converge with the refrigerant that flows out from the target heat exchanger and flow into second heat transfer device and evaporate, then flow into in the compressor, thereby get into next circulation, so, the refrigerant that is heated can be treated the heat transfer of disinfecting and carry out the efficient sterilization that lasts, thereby realize the purpose of the automatically cleaning of high-efficient disinfecting.
In some embodiments, the refrigerant heater is configured to heat the refrigerant to a temperature of 100 ℃ to 120 ℃.
In some embodiments, the air conditioner comprises an outdoor heat exchanger and a plurality of parallel indoor heat exchangers, wherein the plurality of indoor heat exchangers are connected in parallel and then connected in series with the outdoor heat exchanger;
one or more of the indoor heat exchangers are the target heat exchanger, one or more of the rest of the indoor heat exchangers are the target heat exchanger, and the outdoor heat exchanger is the second heat exchange device.
In some embodiments, the first heat exchange device is in a heating mode while sterilizing the target heat exchanger.
In some embodiments, the heat pump system includes a first four-way valve including a first port, a second port, a third port, and a fourth port, the first port is connected to the outlet, the second port is connected to the target heat exchanger and the first heat exchanger, the third port is connected to the inlet, the fourth port is connected to the second heat exchanger, and the refrigerant heater is connected between the first port and the outlet or between the second port and the target heat exchanger;
under the condition of sterilizing the target heat exchanger, the first valve port is communicated with the second valve port, and the third valve port is communicated with the fourth valve port.
In certain embodiments, the first heat exchange device is a heat storage device, the state of the heat storage device comprising a heat storage state and a heat release state;
under the condition of the heat storage state, the heat storage device is connected with the target heat exchanger in parallel and then connected with the second heat exchange device in series, the heat storage device can exchange heat with the gaseous refrigerant to convert the gaseous refrigerant into the liquid refrigerant and supply the liquid refrigerant to the second heat exchange device to store heat, and the second heat exchange device can exchange heat with the liquid refrigerant to convert the liquid refrigerant into the gaseous refrigerant and supply the gaseous refrigerant to the compressor;
the heat storage device can be switched between the heat storage state and the heat release state, the second heat exchange device is connected with the target heat exchanger in parallel and then connected with the heat storage device in series under the condition of switching from the heat storage state to the heat release state, the second heat exchange device can exchange heat with the gaseous refrigerant to convert the gaseous refrigerant into the liquid refrigerant to supply the liquid refrigerant to the heat storage device, and the heat storage device can exchange heat with the liquid refrigerant to convert the liquid refrigerant into the gaseous refrigerant and supply the gaseous refrigerant to the compressor.
In certain embodiments, the heat pump system includes a first four-way valve operable to switch the state of the thermal storage device;
the first four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with the outlet and the target heat exchanger, the second valve port is connected with the heat storage device, the third valve port is connected with the inlet, the fourth valve port is connected with the second heat exchange device, and the refrigerant heater is connected between the first valve port and the outlet or between the first valve port and the target heat exchanger;
when the first valve port is communicated with the second valve port, and the third valve port is communicated with the fourth valve port, the heat storage device is in a heat storage state;
when the first valve port is communicated with the fourth valve port, and the second valve port is communicated with the third valve port, the heat storage device is in a heat release state.
In certain embodiments, the heat pump system further comprises a second four-way valve comprising a fifth port connecting the pipeline between the outlet and the first port, a sixth port connecting the target heat exchanger, a seventh port connecting the pipeline between the third port and the inlet, and an eighth port connecting the seventh port;
when the target heat exchanger is sterilized, the fifth valve port is communicated with the sixth valve port, and the seventh valve port is communicated with the eighth valve port.
In certain embodiments, the heat pump system further comprises a temperature sensor for detecting the temperature of the heat storage device, and a control device connecting the temperature sensor and the first four-way valve;
the control device is configured to control the first four-way valve to operate to shift the thermal storage device from the thermal storage state to the heat release state when the thermal storage device is in the thermal storage state and when the detected temperature of the temperature sensor is greater than or equal to a first threshold value;
the control device is also configured to control the first four-way valve to operate to cause the thermal storage device to transition from the heat release state to the thermal storage state in a case where the thermal storage device is in the heat release state and where the detected temperature of the temperature sensor is less than or equal to a second threshold value that is less than the first threshold value.
In certain embodiments, the heat pump system includes an oil separator connected between the inlet and the outlet, respectively, and the refrigerant heater is connected between the outlet and the oil separator.
The embodiment of the invention also provides an air conditioner, which comprises the heat pump system in any one of the above embodiments.
Among the foretell air conditioner, the refrigerant heater can heat the refrigerant that flows out from the compressor, by refrigerant heater heating target heat exchanger and first heat transfer device of flowing through, can disinfect to the target heat exchanger when flowing through the target heat exchanger, the liquid refrigerant that forms after the heat transfer with first heat transfer device can converge the back with the refrigerant that flows out from the target heat exchanger and flow into second heat transfer device and evaporate, then flow into in the compressor, thereby get into next circulation, therefore, the refrigerant that is heated can treat the heat transfer that disinfects and lasts the efficient and disinfect, thereby realize the purpose of high-efficient automatically cleaning that disinfects.
Additional aspects and advantages of embodiments of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic configuration diagram of a heat pump system according to an embodiment of the present invention;
fig. 2 is another schematic configuration diagram of the heat pump system according to the embodiment of the present invention;
fig. 3 is a schematic view of still another structure of the heat pump system according to the embodiment of the present invention;
fig. 4 is a schematic configuration diagram of the heat pump system according to the embodiment of the present invention in a cooling state;
fig. 5 is a further structural schematic diagram of a heat pump system according to an embodiment of the present invention;
fig. 6 is a further structural schematic diagram of the heat pump system of the embodiment of the invention;
fig. 7 is another schematic diagram of the heat pump system of the embodiment of the invention in a cooling state.
Description of the main element symbols:
the heat pump system 100, the compressor 10, the inlet 11, the outlet 12, the refrigerant heater 20, the target heat exchanger 30, the first heat exchanger 40, the second heat exchanger 50, the first four-way valve 60, the first valve port 61, the second valve port 62, the third valve port 63, the fourth valve port 64, the heat storage device 70, the second four-way valve 90, the fifth valve port 91, the sixth valve port 92, the seventh valve port 93, the eighth valve port 94, the fan 110, and the oil separator 120.
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 or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to 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", "outer", "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, should not 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise expressly specified or limited, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. 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. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
Referring to fig. 1 to 3, a heat pump system 100 according to an embodiment of the present invention may be used in an air conditioner, and the heat pump system 100 includes a compressor 10, a refrigerant heater 20, a target heat exchanger 30, a first heat exchanging device 40, and a second heat exchanging device 50. The compressor 10 includes an inlet 11 and an outlet 12, and the refrigerant heater 20 is connected to the outlet 12 of the compressor 10. The target heat exchanger 30 is connected to the refrigerant heater 20, the refrigerant heater 20 heats the refrigerant flowing out of the outlet 12 of the compressor 10, and the refrigerant heated by the refrigerant heater 20 can be transferred to the target heat exchanger 30 to sterilize the target heat exchanger 30. The first heat exchanger 40 and the second heat exchanger 50 are both connected to the target heat exchanger 30, the first heat exchanger 40 is connected in parallel to the target heat exchanger 30 and then connected in series to the second heat exchanger 50, and the second heat exchanger 50 is connected to the inlet 11 of the compressor 10 (solid arrows in fig. 1 to 3 indicate a flow path of a refrigerant when the target heat exchanger 30 is sterilized).
The first heat exchanger 4 can exchange heat with the gaseous refrigerant to convert the gaseous refrigerant into a liquid refrigerant, and provide the liquid refrigerant to the second heat exchanger 50. The second heat exchanging device 50 can exchange heat with the liquid refrigerant to convert the liquid refrigerant into a gaseous refrigerant and provide the gaseous refrigerant to the compressor 10.
In the heat pump system 100 according to the embodiment of the present invention, the refrigerant heater 20 can heat the refrigerant flowing out of the compressor 10, the refrigerant is heated by the refrigerant heater 20 and flows through the target heat exchanger 30 and the first heat exchanger 40, the target heat exchanger 30 can be sterilized when the refrigerant flows through the target heat exchanger 30, the liquid refrigerant formed by heat exchange with the first heat exchanger 40 can join with the refrigerant flowing out of the target heat exchanger 30, flow into the second heat exchanger 50 for evaporation, and then flow into the compressor 10, so as to enter into the next cycle, and thus, the heated refrigerant can continuously and efficiently sterilize heat exchange to be sterilized, thereby achieving the purpose of efficient sterilization and self-cleaning.
It will be appreciated that in embodiments of the present application, the target heat exchanger is the heat exchanger to be sterilized, i.e. the heat exchanger that needs to be sterilized.
Specifically, in the present embodiment, the refrigerant heater 20 may heat the refrigerant to 100-120 ℃. In this way, the target heat exchanger 30 can be sterilized by a high temperature when the heated refrigerant flows through the target heat exchanger 30.
In addition, in the present embodiment, since the high-temperature refrigerant is in a gaseous state after being condensed by the target heat exchanger 30, for example, the temperature of the refrigerant may be reduced from 100-120 ℃ to 60-70 ℃, at this time, the refrigerant flowing out of the target heat exchanger 30 is still a high-temperature and high-pressure gaseous refrigerant, and cannot be directly returned to the first heat exchanging device 40 or the second heat exchanging device 50 for evaporation and heat exchange, and if the high-temperature and high-pressure refrigerant directly returns to the compressor 10, the compressor 10 may be affected. Therefore, in the present embodiment, in order to maintain the stability of the refrigerant cycle of the heat pump system 100 and protect the heat pump system, one of the first heat exchange device 40 and the second heat exchange device 50 may convert the gaseous refrigerant into the liquid refrigerant to be supplied to the other, and then the liquid refrigerant is evaporated into the gaseous refrigerant and then sent to the compressor 10. That is, in the present embodiment, the first heat exchanger 40 corresponds to a condenser for condensing a gaseous refrigerant, and the second heat exchanger 50 corresponds to an evaporator for evaporating a liquid refrigerant.
In some embodiments, the air conditioner includes an outdoor heat exchanger and a plurality of parallel indoor heat exchangers, and the plurality of parallel indoor heat exchangers are connected in series with the outdoor heat exchanger. Referring to fig. 1, in such a case, one or more of the plurality of indoor heat exchangers may be the above-described target heat exchanger 30, one or more of the remaining indoor heat exchangers may be the first heat exchange means 40, and the outdoor heat exchanger may be the second heat exchange means 50.
Specifically, in the present embodiment, the air conditioner may be a central air conditioner, the heat pump system 100 of the air conditioner may have a sterilization mode, and when the air conditioner receives an instruction to turn on the sterilization mode, the refrigerant heater 20 is activated to heat the refrigerant, thereby sterilizing the indoor heat exchanger. It is understood that, in such an embodiment, the first heat exchange device 40 is in the heating mode in the case of sterilizing the target heat exchanger 30. That is, in such an air conditioner and heat pump system, when one or more of the indoor heat exchangers are sterilized, one or more of the other indoor heat exchangers that do not need sterilization need to be turned on to generate a liquid refrigerant, so as to be mixed with a high-temperature gaseous refrigerant flowing out of the target heat exchanger 30 to form a gas-liquid mixed refrigerant, and then the gas-liquid mixed refrigerant enters the second heat exchanging device 50 (i.e., the outdoor heat exchanger) to be evaporated to form a low-temperature and low-pressure gaseous refrigerant.
Referring to fig. 1 and 4, further, in some embodiments, the heat pump system 100 further includes a first four-way valve 60, the first four-way valve 60 includes a first valve port 61, a second valve port 62, a third valve port 63, and a fourth valve port 64, the first valve port 61 is connected to the outlet 12, the second valve port 62 is connected to the target heat exchanger 30 and the first heat exchanger 40, the third valve port 63 is connected to the inlet 11, the fourth valve port 64 is connected to the second heat exchanger 50, and the refrigerant heater 20 is connected between the first valve port 61 and the outlet 12 or between the second valve port 62 and the target heat exchanger 30. When the target heat exchanger 30 is sterilized, the first port 61 communicates with the second port 62, and the third port 63 communicates with the fourth port 64.
Specifically, referring to fig. 1, in the example shown in fig. 1, the refrigerant heater 20 is connected between a first valve port 61 and an outlet 12, when the target heat exchanger 30 is sterilized, gaseous refrigerant discharged from the outlet 12 of the compressor 10 is heated by the refrigerant heater 20 and then is delivered to the target heat exchanger 30 and the first heat exchanger 40 through the first valve port 61 and the second valve port 62 of the first four-way valve 60, the heated refrigerant enters the target heat exchanger 30 to be sterilized, the refrigerant entering the first heat exchanger 40 exchanges heat with the first heat exchanger 40 to be cooled to form liquid refrigerant, the gaseous refrigerant flowing from the target heat exchanger 30 and the liquid refrigerant flowing from the first heat exchanger 40 are mixed to form gas-liquid mixed refrigerant, and then the gas-liquid mixed refrigerant enters the second heat exchanger 50, and other mixed refrigerant is evaporated in the second heat exchanger 50 and then enters the compressor 10 through the inlet 11 of the compressor 10, this is circulated to achieve efficient sterilization and cleaning of the target heat exchanger 30 in its entirety (solid arrows in fig. 1 indicate the flow path of the refrigerant when sterilizing the target heat exchanger 30).
It should be understood that, in other examples, the refrigerant heater 20 may be connected between the first valve port 61 and the target heat exchanger 30, and unlike the above examples, in such examples, the refrigerant is heated by the refrigerant heater 20 after passing through the first four-way valve 60.
It is understood that, referring to fig. 1 and 4, in such an embodiment, both the indoor heat exchanger (i.e., the target heat exchanger 30 and the first heat exchanging device 40) and the outdoor heat exchanger (i.e., the second heat exchanging device 50) of the air conditioner are equipped with the fan 110, and in the sterilization mode (i.e., in the case of sterilizing the target heat exchanger 30), the fan 110 corresponding to the target heat exchanger 30 is not activated in order to ensure that the target heat exchanger 30 can be in a high temperature state to achieve efficient sterilization and self-cleaning. It can be understood that the refrigerant flowing out of the target heat exchanger 30 is still a high-temperature and high-pressure gaseous refrigerant just because the blower 110 corresponding to the target heat exchanger 30 is not started. However, in order to make the refrigerant flowing out of the first heat exchanger 40 a liquid refrigerant, the fan 110 corresponding to the first heat exchanger 40 is in an on state, that is, the first heat exchanger 40 is in a heating mode to release heat to the external environment.
Furthermore, it can be understood that, in such an embodiment, the indoor heat exchangers (i.e. the target heat exchanger 30 and the first heat exchanging device 40) of the air conditioner may also enter a heating mode, in which the fans 110 corresponding to the indoor heat exchangers are turned on, and the four-way valve is communicated in the same manner as in the sterilization mode, in which the first valve port 61 is communicated with the second valve port 62, and the third valve port 63 is communicated with the fourth valve port 64. In addition, in the embodiment of the present invention, in the heating mode, the refrigerant heater 20 may or may not be turned on, which may be determined according to actual conditions.
Referring to fig. 4, the heat pump system 100 can also enter a cooling mode due to the presence of the first four-way valve 60, in the cooling mode, the first port 61 of the first four-way valve 60 is communicated with the fourth port 64, the second port 62 is communicated with the third port 63, and the refrigerant flows through the target heat exchanger 30 and the first heat exchanger 40 after flowing through the second heat exchanger 50 (solid arrows in fig. 4 indicate the flow path of the refrigerant in the cooling mode).
Referring to fig. 2, 3, 5 and 6, in some embodiments, the first heat exchange device 40 may be a heat storage device 70. The state of the thermal storage device 70 includes a heat storage state and a heat release state.
In the case where the heat storage device 70 is in the heat storage state, the heat storage device 70 is connected in parallel with the target heat exchanger 30 and then connected in series with the second heat exchange device 50, the heat storage device 70 can exchange heat with the gaseous refrigerant to convert the gaseous refrigerant into the liquid refrigerant and supply the liquid refrigerant to the second heat exchange device 50 and store heat, and the second heat exchange device 50 can exchange heat with the liquid refrigerant to convert the liquid refrigerant into the gaseous refrigerant and supply the gaseous refrigerant to the compressor 10.
The heat storage device 70 is capable of switching between a heat storage state and a heat release state, and when the heat storage state is switched to the heat release state, the second heat exchanger 50 is connected in parallel to the target heat exchanger 30 and then connected in series to the heat storage device 70, the second heat exchanger 50 is capable of exchanging heat with the gaseous refrigerant to convert the gaseous refrigerant into the liquid refrigerant and supplying the liquid refrigerant to the heat storage device 70, and the heat storage device 70 is capable of exchanging heat with the liquid refrigerant to convert the liquid refrigerant into the gaseous refrigerant and supplying the gaseous refrigerant to the compressor 10.
That is, in the present embodiment, the heat storage device 70 and the second heat exchange device 50 function differently when the heat storage device 70 is in different states, and when the heat storage device 70 is in a heat storage state, the heat storage device 70 is configured to store heat to cool a gaseous refrigerant to supply the liquid refrigerant to the second heat exchange device 50, and the second heat exchange device 70 is configured to evaporate the liquid refrigerant to supply the gaseous refrigerant to the compressor 10. When the heat storage device 70 is in the heat release state, the second heat exchange device 50 is configured to cool the gaseous refrigerant to provide the liquid refrigerant to the heat storage device 70, and the heat storage device 70 is configured to release heat to evaporate the liquid refrigerant to provide the gaseous refrigerant to the compressor 10. That is, the heat storage device 70 and the second heat exchange device 50 are operated in a mutually different state, and the heat storage device 70 corresponds to a condenser and the second heat exchange device 50 corresponds to an evaporator when the heat storage device 70 is in a heat storage state, and the heat storage device 70 corresponds to an evaporator and the second heat exchange device 50 corresponds to a condenser when the heat storage device 70 is in a heat release state.
Further, it is also understood that in the present embodiment, the first heat exchange device 40 employs the heat storage device 70 having heat storage and release functions, so that the heat storage device 70 can absorb heat to cool the high-temperature and high-pressure gaseous refrigerant or release heat to evaporate the liquid refrigerant when sterilizing the target heat exchanger 30. Meanwhile, since the first heat exchanging device 40 can store and release heat, in this embodiment, the heat pump system 100 and the air conditioner may not be a multi-split system, that is, one or more indoor heat exchangers of the air conditioner may be provided, and when the indoor heat exchangers are provided, other indoor heat exchangers may not be operated in a heating mode when the indoor heat exchangers are sterilized, thereby preventing a temperature of a certain room from being increased. It is understood that, in the present embodiment, the air conditioner may be a central air conditioner or a home air conditioner.
In addition, in the present embodiment, the thermal storage device 70 may be a device that can store and release heat, which is made of a phase change thermal storage material or other materials that can store and release heat, and in particular, it is not limited thereto, and only needs to be able to store and release heat.
Further, referring to fig. 2, 3 and 5, as well as fig. 6, in such an embodiment, the heat pump system 100 further includes a first four-way valve 60, the first four-way valve 60 being operable to switch the state of the heat storage device 70;
the first four-way valve 60 includes a first valve port 61, a second valve port 62, a third valve port 63 and a fourth valve port 64, the first valve port 61 connects the outlet 12 and the target heat exchanger 30, the second valve port 62 connects the heat storage device 70, the third valve port 63 connects the inlet 11, the fourth valve port 64 connects the second heat exchange device 50, and the refrigerant heater 20 is connected between the first valve port 61 and the outlet 12 or between the first valve port 61 and the target heat exchanger 30;
in the case where the first valve port 61 communicates with the second valve port 62, and the third valve port 63 communicates with the fourth valve port 64, the thermal storage device 70 is in a thermal storage state;
when the first port 61 communicates with the fourth port 64 and the second port 62 communicates with the third port 63, the thermal storage device 70 is in a heat release state.
Specifically, in the present embodiment, the heat pump system 100 further includes a control device (not shown), and the operation of the first four-way valve may be controlled by the control device, that is, the control device may notify the communication mode of the valve port of the first four-way valve to determine whether the heat storage device 70 is in the heat storage state or the heat release state, for example, when the heat storage state is performed, the first valve port 61 is communicated with the second valve port 62, and the third valve port 63 is communicated with the fourth valve port 64, and at this time, if the switching state is required, the control device may switch the communication mode of the valve ports to the first valve port 61 is communicated with the fourth valve port 64, and the second valve port 62 is communicated with the third valve port 63.
It should be noted that the first four-way valve 60 in the present embodiment and the first four-way valve 60 in the above embodiment are different in the function, the function of the first four-way valve 60 in the above embodiment is to enable the heat pump system 100 to switch between the heating mode, the cooling mode, and the heat storage mode, and the function of the first four-way valve 60 in the present embodiment is to enable the heat storage device 70 to directly switch between the heat storage state and the heat release state in the sterilization mode.
Referring to fig. 2 and 3, in the example shown in fig. 2 and 3, the refrigerant heater 20 is connected between the first valve port 61 and the outlet 12.
Referring to fig. 2, when the heat storage device 70 is in a heat storage state while the target heat exchanger 30 is sterilized, the first valve port 61 communicates with the second valve port 62, and the third valve port 63 communicates with the fourth valve port 64. In this case, the first heat exchanger 40 is connected in parallel to the target heat exchanger 30 and then connected in series to the second heat exchanger 50, the gaseous refrigerant discharged from the outlet 12 of the compressor 10 is heated by the refrigerant heater 20 and then divided, and a portion of the gaseous refrigerant is sent into the heat storage device 70 through the first valve port 61 and the second valve port 62 of the first four-way valve 60 and cooled in the heat storage device 70 to form a liquid refrigerant, and at this time, the heat storage device 70 stores heat released by cooling the refrigerant. The other portion is delivered to the target heat exchanger 30 to sterilize the target heat exchanger 30. Subsequently, the gas-liquid mixed refrigerant, which is formed by mixing the gas refrigerant flowing out of the target heat exchanger 30 and the liquid refrigerant flowing out of the heat storage device 70, flows into the second heat exchanger 50 to be evaporated, and then the evaporated refrigerant enters the compressor 10 through the inlet 11 of the compressor 10 to enter the next cycle (solid arrows in fig. 2 indicate the circulation path of the refrigerant in the heat storage state of the heat storage device 70). It is to be understood that in such a case, the heat storage device 70 corresponds to a condenser, and the second heat exchange device 50 corresponds to an evaporator.
It is understood that, in general, the heat storage device 70 can store a limited amount of heat, and therefore, when the amount of heat stored reaches a certain level, for example, when the temperature of the heat storage device 70 reaches a certain level, the heat storage device 70 will not be able to store heat any more, and at this time, the heat storage device 70 needs to release heat. Referring to fig. 3, in such a case, the valve state of the first four-way valve 60 can be switched from the original state in which the first port 61 and the second port 62 are communicated, the third port 63 and the fourth port 64 are communicated, to the state in which the first port 61 and the fourth port 64 are communicated, and the second port 62 and the third port 63 are communicated. In this case, the second heat exchanger 50 is connected in parallel to the target heat exchanger 30 and then connected in series to the first heat exchanger 40, the gaseous refrigerant discharged from the outlet 12 of the compressor 10 is heated by the refrigerant heater 20 and then divided, a portion of the gaseous refrigerant is delivered into the second heat exchanger 50 through the first valve port 61 and the fourth valve port 64 of the first four-way valve 60 and is cooled in the second heat exchanger 50 to form a liquid refrigerant, and the other portion of the gaseous refrigerant is delivered to the target heat exchanger 30 to sterilize the target heat exchanger 30. Then, the gas-phase refrigerant flowing out of the target heat exchanger 30 and the liquid-phase refrigerant flowing out of the second heat exchanger 50 are mixed to form a gas-liquid mixed refrigerant, and the gas-liquid mixed refrigerant flows into the heat storage device 70 together, the heat storage device 70 releases heat to evaporate the liquid-phase refrigerant, and the evaporated refrigerant enters the compressor 10 through the inlet 11 of the compressor 10 to enter the next cycle (solid arrows in fig. 3 indicate the circulation path of the refrigerant in the heat release state of the heat storage device 70). It is to be understood that in such a case, the heat storage device 70 corresponds to an evaporator, and the second heat exchange device 50 corresponds to a condenser.
In this way, the switching between heat storage and heat release of the heat storage device 70 can be realized by switching the state of the first four-way valve 60, so that it can be ensured that the target heat exchanger 30 can be sterilized effectively and durably, and the heat storage amount of the heat storage device can be prevented from reaching the limit, so that the operation and durability of the compressor 10 are affected by the gaseous refrigerant with high temperature and high pressure and the liquid refrigerant in the refrigerant circulation loop.
Referring to fig. 5 and 6, in the example shown in fig. 5 and 6, the refrigerant heater 20 is connected between the first valve port 61 and the target heat exchanger 30. Unlike the above example, in this example, the refrigerant passes through the first four-way valve 60 and is then heated by the refrigerant heater 20.
With continued reference to fig. 2, 3, 5 and 6, in some embodiments, the heat pump system 100 further includes a second four-way valve 90, where the second four-way valve 90 includes a fifth valve port 91, a sixth valve port 92, a seventh valve port 93 and an eighth valve port 94, the fifth valve port 91 is connected to the pipeline between the outlet 12 and the first valve port 61, the sixth valve port 92 is connected to the target heat exchanger 30, the seventh valve port 93 is connected to the pipeline between the third valve port 63 and the inlet 11, and the eighth valve port 94 is connected to the seventh valve port 93.
When the target heat exchanger 30 is sterilized, the fifth port 91 communicates with the sixth port 92, and the seventh port 93 communicates with the eighth port 94.
Specifically, in such an embodiment, when the heat storage device 70 is in the heat storage state or the heat release state during sterilization of the target heat exchanger 30, the fifth port 91 and the sixth port 92 of the second four-way valve 90 are always in communication, and the seventh port 93 and the eighth port 94 are always in communication.
When the heat storage device 70 is in the heat storage state, the gaseous refrigerant evaporated by the second heat exchange device 50 flows out through the fourth port 64 and the third port 63 of the first four-way valve 60, and since the seventh port 93 is connected to the pipe between the third port 63 and the inlet 11 and the eighth port 94 is connected to the seventh port 93 to form a circulation loop, even if the refrigerant flows through the second four-way valve 90 from the seventh port 93, the refrigerant flows out from the eighth port 94 to flow into the compressor 10 again.
Similarly, when the heat storage device 70 is in the heat release state, the gaseous refrigerant evaporated by the heat storage device 70 flows through the second port 62 of the first four-way valve 60 and flows out from the third port 63, and since the seventh port 93 is connected to the pipe between the third port 63 and the inlet 11 and the eighth port 94 is connected to the seventh port 93 to form a circulation loop, even if the refrigerant flows through the second four-way valve 90 from the seventh port 93, the refrigerant flows out from the eighth port 94 to flow into the compressor 10 again.
In addition, referring to fig. 7, the second four-way valve 90 is further configured to enable the target heat exchanger 30 to operate in a heating mode, a cooling mode, and a heating mode and a cooling mode, and when the target heat exchanger 30 operates in the heating mode, only the fifth valve port 91 is required to be communicated with the sixth valve port 92, the seventh valve port 93 is required to be communicated with the eighth valve port 94, and the fan 110 matched with the target heat exchanger 30 is started to deliver hot air to the outside. At this time, the refrigerant heater 20 may be turned on or partially turned on.
Referring to fig. 7, when the cooling mode needs to be operated, it is only necessary to simultaneously switch the states of the first four-way valve 60 and the second four-way valve 90, that is, to switch the first four-way valve 60 to communicate with the first valve port 61 and the fourth valve port 64, communicate with the second valve port 62 and the third valve port 63, switch the second four-way valve 90 to communicate with the fifth valve port 91 and the eighth valve port 94, and communicate with the sixth valve port 92 and the seventh valve port 93 (i.e., the state shown in fig. 7), in such a case, the refrigerant first flows through the second heat exchanger 50, is condensed into a liquid refrigerant in the second heat exchanger 50 and generates heat, and then is respectively branched to the heat storage device 70 and the target heat exchanger 30, the liquid refrigerant evaporates and is converted into a gaseous refrigerant in the target heat exchanger 30, the target heat exchanger 30 cools the outside during the conversion, and then the gaseous refrigerant flows back into the compressor 10 through the sixth valve port 92 and the seventh valve port 93 of the second four-way valve 90 to enter the next cycle (solid Flow path of refrigerant in mode).
In some embodiments, the heat pump system 100 further includes a temperature sensor (not shown) for detecting the temperature of the heat storage device 70, and a control device (not shown) connecting the temperature sensor and the first four-way valve 60. The control means may be configured to control the first four-way valve 60 to operate to transition the heat storage device 70 from the heat storage state to the heat release state in the case where the heat storage device 70 is in the heat storage state and where the detected temperature of the temperature sensor is greater than or equal to the first threshold value. The control means may also be configured to control the first four-way valve 60 to operate to transition the heat storage device 70 from the heat release state to the heat storage state in a case where the heat storage device 70 is in the heat release state and where the detected temperature of the temperature sensor is less than or equal to a second threshold value, where the second threshold value is less than the first threshold value.
Specifically, the first threshold value may be the temperature of the thermal storage device 70 when the thermal storage amount of the thermal storage device 70 reaches a limit, and the second threshold value may be the temperature of the thermal storage device 70 when the heat of the thermal storage device 70 is substantially released and the liquid refrigerant cannot be supplied any more. Both the first threshold and the second threshold may be temperature parameters set before the heat pump system 100 leaves the factory, and specific values may be set according to specific situations.
As described above, in the present embodiment, when sterilizing heat exchange to be sterilized, the control device may detect the temperature of the thermal storage device 70 based on the temperature sensor to accurately determine whether the thermal storage device 70 needs to be switched to the heat storage state, that is, whether the thermal storage device 70 needs to be switched from the heat storage state to the heat release state or from the heat release state to the heat storage state. When the state needs to be switched, the control device only needs to control the four-way valve to act to complete automatic switching.
Further, it is understood that in the present embodiment, the control device may also be connected to the second four-way valve 90 and may be capable of controlling the operation of the second four-way valve 90 and also controlling the on and off of the fan 110, so that the control device may simultaneously operate the first four-way valve 60 and the second four-way valve 90 and the on and off of the fan 110 to switch the target heat exchanger 30 between the heating mode and the cooling mode. In addition, the control device may also be connected to the refrigerant heater 20, and the control device may also be configured to control the refrigerant heater 20 to be turned off and on, so that the control device may switch the heat pump system 100 between the heating mode, the cooling mode, and the sterilization mode when receiving an external instruction.
Referring to fig. 1 to 4, in some embodiments, the heat pump system 100 further includes an oil separator 120, the oil separator 120 is connected to the inlet 11 and the outlet 12, respectively, and the refrigerant heater 20 is connected between the outlet 12 and the oil separator 120.
Specifically, the oil separator 120 serves to separate the lubricant oil discharged out of the compressor 10 with the refrigerant gas and supply the separated lubricant oil to the compressor 10, thereby preventing the compressor 10 from being damaged due to oil shortage.
In the embodiment shown in fig. 1 to 4, the refrigerant heater 20 is connected between the outlet 12 of the compressor 10 and the separator. That is, in the example shown in fig. 1 to 4, the refrigerant is heated by the refrigerant heater 20 and then enters the oil separator 120 to separate the lubricating oil. It should be understood that, referring to fig. 5 and 6, in other embodiments, the refrigerant heater 20 may also be connected after the oil separator 120, that is, in the example shown in fig. 5 and 6, the refrigerant is heated after the lubricant oil is separated by the oil separator 120 and then enters the refrigerant heater 20.
The embodiment of the invention further provides an air conditioner, and the air conditioner comprises the heat pump system 100 in any one of the above embodiments.
Specifically, the air conditioner may be a household air conditioner or a central air conditioner. When the air conditioner is a home air conditioner, the target heat exchanger 30 may be an indoor heat exchanger, the second heat exchange device 50 may be an outdoor heat exchanger, and the first heat exchange device 40 may be a heat storage device 70. In the case where the air conditioner is a central air conditioner, the target heat exchanger 30 may be one or more of a plurality of indoor heat exchangers, the first heat exchange device 40 is one or more of other indoor heat exchangers, and the second heat exchange device 50 is an outdoor heat exchanger.
In the air conditioner of the embodiment of the invention, the refrigerant heater 20 can heat the refrigerant flowing out of the compressor 10, the refrigerant is heated by the refrigerant heater 20 and flows through the target heat exchanger 30 and the first heat exchange device 40, the target heat exchanger 30 can be sterilized when the refrigerant flows through the target heat exchanger 30, the liquid refrigerant formed after heat exchange with the first heat exchange device 40 can be converged with the refrigerant flowing out of the target heat exchanger 30, then flows into the second heat exchange device 50 for evaporation, and then flows into the compressor 10, so that the next cycle is carried out, and therefore, the heated refrigerant can continuously and efficiently sterilize heat exchange to be sterilized, and the purposes of efficient sterilization and self-cleaning are achieved.
Furthermore, in the description herein, reference to the description of the terms "one embodiment," "certain embodiments," "illustrative embodiments," "an example," "specific example," or "some examples" or the like means 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.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (11)

1. A heat pump system for an air conditioner, the heat pump system comprising:
a compressor comprising an inlet and an outlet;
a refrigerant heater connected to the outlet;
the target heat exchanger is connected with the refrigerant heater, the refrigerant heater is used for heating the refrigerant flowing out of the outlet, and the refrigerant heated by the refrigerant heater can be conveyed to the target heat exchanger to sterilize the target heat exchanger;
the first heat exchange device and the second heat exchange device are connected with the target heat exchanger in parallel and then connected with the second heat exchange device in series, and the second heat exchange device is connected with the inlet;
the first heat exchange device can exchange heat with a gaseous refrigerant to convert the gaseous refrigerant into a liquid refrigerant and provide the liquid refrigerant to the second heat exchange device;
the second heat exchange device can exchange heat with the liquid refrigerant to convert the liquid refrigerant into a gaseous refrigerant and provide the gaseous refrigerant to the compressor.
2. The heat pump system of claim 1, wherein the refrigerant heater is configured to heat the refrigerant to a temperature of 100 ℃ to 120 ℃.
3. The heat pump system of claim 1, wherein the air conditioner comprises an outdoor heat exchanger and a plurality of parallel indoor heat exchangers, and the plurality of indoor heat exchangers are connected in parallel and then connected in series with the outdoor heat exchanger;
one or more of the indoor heat exchangers are the target heat exchanger, one or more of the rest of the indoor heat exchangers are the target heat exchanger, and the outdoor heat exchanger is the second heat exchange device.
4. The heat pump system of claim 3, wherein the first heat exchange device is in a heating mode with the target heat exchanger sterilized.
5. The heat pump system of claim 3, wherein the heat pump system comprises a first four-way valve comprising a first port, a second port, a third port, and a fourth port, the first port is connected to the outlet, the second port is connected to the target heat exchanger and the first heat exchanger, the third port is connected to the inlet, the fourth port is connected to the second heat exchanger, and the refrigerant heater is connected between the first port and the outlet or between the second port and the target heat exchanger;
under the condition of sterilizing the target heat exchanger, the first valve port is communicated with the second valve port, and the third valve port is communicated with the fourth valve port.
6. The heat pump system of claim 1, wherein the first heat exchange device is a thermal storage device, and the state of the thermal storage device includes a thermal storage state and a thermal release state;
under the condition of the heat storage state, the heat storage device is connected with the target heat exchanger in parallel and then connected with the second heat exchange device in series, the heat storage device can exchange heat with the gaseous refrigerant to convert the gaseous refrigerant into the liquid refrigerant and supply the liquid refrigerant to the second heat exchange device to store heat, and the second heat exchange device can exchange heat with the liquid refrigerant to convert the liquid refrigerant into the gaseous refrigerant and supply the gaseous refrigerant to the compressor;
the heat storage device can be switched between the heat storage state and the heat release state, the second heat exchange device is connected with the target heat exchanger in parallel and then connected with the heat storage device in series under the condition of switching from the heat storage state to the heat release state, the second heat exchange device can exchange heat with the gaseous refrigerant to convert the gaseous refrigerant into the liquid refrigerant to supply the liquid refrigerant to the heat storage device, and the heat storage device can exchange heat with the liquid refrigerant to convert the liquid refrigerant into the gaseous refrigerant and supply the gaseous refrigerant to the compressor.
7. The heat pump system of claim 6, comprising a first four-way valve operable to switch the state of the thermal storage device;
the first four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with the outlet and the target heat exchanger, the second valve port is connected with the heat storage device, the third valve port is connected with the inlet, the fourth valve port is connected with the second heat exchange device, and the refrigerant heater is connected between the first valve port and the outlet or between the first valve port and the target heat exchanger;
when the first valve port is communicated with the second valve port, and the third valve port is communicated with the fourth valve port, the heat storage device is in a heat storage state;
when the first valve port is communicated with the fourth valve port, and the second valve port is communicated with the third valve port, the heat storage device is in a heat release state.
8. The heat pump system of claim 7, further comprising a second four-way valve comprising a fifth port connecting the conduit between the outlet and the first port, a sixth port connecting the target heat exchanger, a seventh port connecting the conduit between the third port and the inlet, and an eighth port connecting the seventh port;
when the target heat exchanger is sterilized, the fifth valve port is communicated with the sixth valve port, and the seventh valve port is communicated with the eighth valve port.
9. The heat pump system according to claim 7, further comprising a temperature sensor for detecting a temperature of the heat storage device, and a control device connecting the temperature sensor and the first four-way valve;
the control device is configured to control the first four-way valve to operate to shift the thermal storage device from the thermal storage state to the heat release state when the thermal storage device is in the thermal storage state and when the detected temperature of the temperature sensor is greater than or equal to a first threshold value;
the control device is also configured to control the first four-way valve to operate to cause the thermal storage device to transition from the heat release state to the thermal storage state in a case where the thermal storage device is in the heat release state and where the detected temperature of the temperature sensor is less than or equal to a second threshold value that is less than the first threshold value.
10. The heat pump system of claim 1, comprising an oil separator connected between the inlet and the outlet, respectively, the refrigerant heater being connected between the outlet and the oil separator.
11. An air conditioner characterized by comprising the heat pump system according to any one of claims 1 to 10.
CN201910832558.9A 2019-09-04 2019-09-04 Heat pump system and air conditioner Active CN110595090B (en)

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JP2000283582A (en) * 1999-03-31 2000-10-13 Fuji Heavy Ind Ltd Pasteurization of motor vehicle air conditioner
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