CN116608511A - Air conditioning system - Google Patents

Air conditioning system Download PDF

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Publication number
CN116608511A
CN116608511A CN202310587179.4A CN202310587179A CN116608511A CN 116608511 A CN116608511 A CN 116608511A CN 202310587179 A CN202310587179 A CN 202310587179A CN 116608511 A CN116608511 A CN 116608511A
Authority
CN
China
Prior art keywords
heat exchanger
valve
flow path
air conditioning
conditioning system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310587179.4A
Other languages
Chinese (zh)
Inventor
卞嘉晨
李枭
罗文�
李小超
卜根
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.)
Nanjing Huihe Construction Technology Co ltd
Original Assignee
Nanjing Huihe Construction Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nanjing Huihe Construction Technology Co ltd filed Critical Nanjing Huihe Construction Technology Co ltd
Priority to CN202310587179.4A priority Critical patent/CN116608511A/en
Publication of CN116608511A publication Critical patent/CN116608511A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the heat exchangers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/26—Disposition of valves, e.g. of on-off valves or flow control valves of fluid flow reversing 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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—Expansion valves
    • F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
    • 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]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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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)
  • Fluid Mechanics (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

The application discloses an air conditioning system which comprises a first heat exchanger, a second heat exchanger, a third heat exchanger, a compressor and a throttling device, wherein the first heat exchanger is used for heating or cooling working media in the air conditioning system. The second heat exchanger is used for heating or cooling working medium in the air conditioning system. The third heat exchanger is used for heating or cooling working medium in the air conditioning system. The compressor is used for compressing working media in the air conditioning system. The throttling device is used for controlling the flow of working medium in the air conditioning system; the first heat exchanger, the compressor, the second heat exchanger, the throttling device and the third heat exchanger are sequentially communicated. The application has the advantage of providing the air conditioning system which can achieve both heating and dehumidification.

Description

Air conditioning system
Technical Field
The application relates to the technical field of air conditioners, in particular to an air conditioning system.
Background
Independent temperature and humidity control is an effective way for reducing the energy consumption of an air conditioner and improving the indoor human comfort level. The fresh air conditioning system mainly comprises a cold (hot) water unit and a fresh air dehumidifying (humidifying) machine, wherein the indoor temperature and the indoor humidity are independently controlled through the respective refrigerating units, and the system is difficult to meet the requirement of heating and dehumidifying in low-temperature and high-humidity weather due to the existing pipeline design.
In the related art, for example, chinese patent document CN103868171a provides a fresh air system with a dehumidifying function, which can implement a refrigeration cycle operated in summer, cool fresh air, dehumidify and send the fresh air into a room; heating cycle is operated in winter, and fresh air is heated, humidified and sent into a room. It does not allow simultaneous heating and dehumidification at lower temperatures but higher humidity.
From the above, the related art does not provide any technical teaching for how to realize the heating and dehumidifying functions in the fresh air system at the same time.
Disclosure of Invention
The summary of the application is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. The summary of the application is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
To solve the technical problems mentioned in the background section above, some embodiments of the present application provide an air conditioning system, which includes a first heat exchanger, a second heat exchanger, a third heat exchanger, a compressor, and a throttling device, where the first heat exchanger is used to heat or cool a working medium in the air conditioning system. The second heat exchanger is used for heating or cooling working medium in the air conditioning system. The third heat exchanger is used for heating or cooling working medium in the air conditioning system. The compressor is used for compressing working media in the air conditioning system. The throttling device is used for controlling the flow of working medium in the air conditioning system; the first heat exchanger, the compressor, the second heat exchanger, the throttling device and the third heat exchanger are sequentially communicated.
Further, the air conditioning system further comprises a switching valve device connected between the compressor and the second heat exchanger and/or the third heat exchanger; the switching valve device is provided with a first switching state and a second switching state, so that the compressor, the second heat exchanger and the third heat exchanger are sequentially communicated when the switching valve device is in the first switching state, and the compressor is respectively communicated with the second heat exchanger and the third heat exchanger when the switching valve device is in the second switching state.
Further, the switching valve device comprises a three-way valve, wherein the three-way valve comprises a first valve port, a second valve port and a third valve port, the first valve port is connected to the first heat exchanger, the second valve port is connected to the compressor, and the third valve port is connected to the third heat exchanger; the first valve port is communicated with the third valve port and the second valve port is closed when the switching valve device is in a first switching state, and the second valve port is communicated with the third valve port and the first valve port is closed when the switching valve device is in a second switching state.
Further, the switching valve device comprises a first switching valve, a second switching valve and a third switching valve, wherein the first switching valve is connected between the compressor and the third heat exchanger, the second switching valve is connected between the second heat exchanger and the third heat exchanger, and the third switching valve is connected between the second heat exchanger and the first heat exchanger.
Further, the air conditioning system further comprises a liquid storage tank, and the liquid storage tank is connected between the first interface of the third heat exchanger and the first interface of the first heat exchanger.
Further, the air conditioning system further includes a flow path switching device having a first flow path state and a second flow path state such that the working medium flows from the first interface to the second interface of the flow path switching device when the flow path switching device is in the first flow path state and the working medium flows from the second interface to the first interface of the flow path switching device when the flow path switching device is in the second flow path state.
Further, the flow path switching device comprises a first flow path switching device, a second flow path switching device and a third flow path switching device, and the first flow path switching device is connected between the liquid storage tank and the first heat exchanger; the second flow path switching device is connected to one side of the second heat exchanger far away from the compressor; the third flow path switching device is connected between the third heat exchanger and the second flow path switching device.
Further, the first flow path switching device comprises a first one-way valve and a first electronic expansion valve, the second flow path switching device comprises a second one-way valve and a second electronic expansion valve, the third flow path switching device comprises a third one-way valve and a throttling device, and the throttling device comprises a third expansion valve; the first check valve is connected with the first electronic expansion valve in parallel, the second check valve is connected with the second electronic expansion valve in parallel, and the third check valve is connected with the third electronic expansion valve in parallel.
Further, the first check valve and the third check valve are oriented differently.
Further, the second check valve and the third check valve are oriented differently when the switching valve device is in the first switching state.
The application has the beneficial effects that: provided is an air conditioning system capable of simultaneously heating and dehumidifying.
More specifically, some embodiments of the present application may have the following specific benefits:
the switching valve device can enable the air conditioning system to be switched between a heating dehumidification mode and a heating hot air mode so as to simultaneously meet various requirements;
the switching valve device is a three-way valve, the pipeline design of the air conditioning system is simplified due to the fact that the three-way valve is reduced, and the air conditioning system is convenient to construct and maintain when being implemented.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application, are incorporated in and constitute a part of this specification. The drawings and their description are illustrative of the application and are not to be construed as unduly limiting the application.
In addition, the same or similar reference numerals denote the same or similar elements throughout the drawings. It should be understood that the figures are schematic and that elements and components are not necessarily drawn to scale.
In the drawings:
FIG. 1 is a schematic illustration of the direction of flow of a working fluid in a first operating condition of an air conditioning system according to an embodiment of the present application;
FIG. 2 is a schematic view of another construction of the switching valve device of the air conditioning system shown in FIG. 1; the method comprises the steps of carrying out a first treatment on the surface of the
FIG. 3 is a schematic view of the direction of flow of the working medium of the air conditioning system of FIG. 1 in a second operating state;
FIG. 4 is an overall schematic of an air conditioning system according to one embodiment of the present application;
FIG. 5 is a schematic flow diagram of a working fluid in a single dehumidification condition in an air conditioning system according to one embodiment of the present disclosure;
FIG. 6 is a schematic flow diagram of a working fluid in a single hot air condition in an air conditioning system according to one embodiment of the present application;
FIG. 7 is a schematic diagram of the flow of working fluid under refrigeration and dehumidification in an air conditioning system according to one embodiment of the present application;
FIG. 8 is a schematic flow diagram of a working fluid in a first flow path state in an air conditioning system according to an embodiment of the present application;
fig. 9 is a schematic flow diagram of a working fluid in a second flow path state in an air conditioning system according to an embodiment of the present application.
Meaning of reference numerals:
100. an air conditioning system;
110. a first heat exchanger;
120. a second heat exchanger;
130. a third heat exchanger;
140. a compressor;
150. a throttle device;
160. a switching valve device; 160a, a first valve port; 160b, a second valve port; 160c, a third valve port; 161. a first switching valve; 162. a second switching valve; 163. a third switching valve;
170. a liquid storage tank;
180. a flow path switching device; 181. a first flow path switching device; 181a, a first one-way valve; 181b, a first electronic expansion valve; 182. a second channel switching device; 182a, a second one-way valve; 182b, a second electronic expansion valve; 183. a third flow path switching device; 183a, a third one-way valve; 183b, a third electronic expansion valve;
side1, the first interface of the first switching device of interface;
side2, the first interface of the third switching device;
side3, the first interface of the flow path switching device;
side4, the second interface of the flow path switching device.
Detailed Description
Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It should be understood that the drawings and embodiments of the present disclosure are for illustration purposes only and are not intended to limit the scope of the present disclosure.
It should be further noted that, for convenience of description, only the portions related to the present application are shown in the drawings. Embodiments of the present disclosure and features of embodiments may be combined with each other without conflict.
In the description of the present application, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which a product of the application is conventionally put in use, it is merely for convenience of describing the present application and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like in the description of the present application, if any, are used for distinguishing between the descriptions and not necessarily for indicating or implying a relative importance.
Furthermore, the terms "horizontal," "vertical," and the like in the description of the present application, if any, do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. It will be understood by those of ordinary skill in the art that the specific meaning of the terms described above in this application
It should be noted that references to "one", "a plurality" and "a plurality" in this disclosure are intended to be illustrative rather than limiting, and those skilled in the art will appreciate that "one or more" is intended to be construed as "one or more" unless the context clearly indicates otherwise.
The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1 to 4, an air conditioning system 100 of the present application includes a first heat exchanger 110, a second heat exchanger 120, a third heat exchanger 130, a compressor 140, and a throttling device 150, wherein the first heat exchanger 110 is used for heating or cooling a working medium in the air conditioning system 100. The second heat exchanger 120 is used to warm or cool the working fluid in the air conditioning system 100. The third heat exchanger 130 is used to warm or cool the working fluid in the air conditioning system 100. The compressor 140 is used to compress a working medium in the air conditioning system 100. Throttle device 150 is used to control the flow of working fluid in air conditioning system 100; the first heat exchanger 110, the compressor 140, the second heat exchanger 120, the throttling device 150, and the third heat exchanger 130 are sequentially communicated.
Specifically, the compressor 140 compresses the working medium, so that the working medium flowing out of the compressor 140 is a high-temperature and high-pressure gaseous working medium, the compressor 140 is communicated with the second heat exchanger 120, the second heat exchanger 120 is a water side heat exchanger, that is, the second heat exchanger 120 heats water in a capillary network passing through the second heat exchanger, the hot water in the capillary network heats a lower indoor temperature, the capillary network is one of the end forms of the second heat exchanger 120, and can also be a fan coil, a floor heating coil or the like, and the capillary network can be replaced by a fan coil, a floor heating coil or the like, which will not be described again. The working medium passing through the second heat exchanger 120 becomes a high-temperature high-pressure liquid state, the high-temperature high-pressure liquid state working medium is further decompressed through the throttling device 150, specifically, the throttling device 150 is an electronic expansion valve, the flow of the working medium in a pipeline can be controlled more accurately, at the moment, the electronic expansion valve further cools the working medium to enable the working medium to become a low-temperature low-pressure gas-liquid two-phase state, the low-temperature low-pressure gas-liquid two-phase state working medium passes through the third heat exchanger 130 to dehumidify indoor circulating air, and therefore, the indoor dehumidification can be performed while the indoor temperature is increased in the connection state, and the situations of lower indoor temperature and higher indoor humidity are met.
More specifically, the air conditioning system 100 further includes a switching valve device 160 connected between the compressor 140 and the second heat exchanger 120 and the third heat exchanger 130, the switching valve device 160 being connected between the compressor 140 and the second heat exchanger 120, and the switching valve device 160 being connected between the compressor 140 and the third heat exchanger 130. The switching valve device 160 has a first switching state and a second switching state, so that the compressor 140, the second heat exchanger 120, and the third heat exchanger 130 are sequentially connected when the switching valve device 160 is in the first switching state, and the compressor 140 is respectively connected to the second heat exchanger 120 and the third heat exchanger 130 when the switching valve device 160 is in the second switching state. The switching valve device 160 can quickly adjust the use state of the air conditioning system 100, saves the number of pipelines of the air conditioning system 100 during installation, and reduces the design difficulty of the pipeline positions.
More specifically, the switching valve device 160 comprises a three-way valve having a first port 160a, a second port 160b and a third port 160c, the first port 160a being connected to the first heat exchanger 110, the second port 160b being connected to the compressor 140, the third port 160c being connected to the third heat exchanger 130; wherein, when the switching valve device 160 is in the first switching state, the first valve port 160a is communicated with the third valve port 160c, and the second valve port 160b is closed, and when the switching valve device 160 is in the second switching state, the second valve port 160b is communicated with the third valve port 160c, and the first valve port 160a is closed.
More specifically, when the switching valve device 160 is in the first switching state, the compressor 140, the second heat exchanger 120, and the third heat exchanger 130 are sequentially connected. At this time, the compressor 140 compresses the working medium, so that the working medium flowing out of the compressor 140 is a high-temperature and high-pressure gaseous working medium, the compressor 140 is communicated with the second heat exchanger 120, the second heat exchanger 120 is a water side heat exchanger, that is, the second heat exchanger 120 heats water in a capillary network passing through the second heat exchanger, the hot water in the capillary network heats lower indoor temperature, the working medium passing through the second heat exchanger 120 becomes a low-temperature and low-pressure gas phase, the low-temperature and low-pressure gas phase working medium further flows through the throttling device 150 to further limit the flow, specifically, the throttling device 150 is an electronic expansion valve, at this time, the electronic expansion valve further cools the working medium to enable the working medium to become a low-temperature and low-pressure gas-liquid two-phase state, the low-temperature and low-pressure gas-liquid two-phase state passes through the third heat exchanger 130 to dehumidify indoor circulating air, and then the working medium flows through the first heat exchanger 110. At this time, the air conditioning system 100 dehumidifies the room while increasing the temperature of the room, thereby satisfying the scene that the indoor temperature is low and the indoor humidity is high.
When the switching valve device 160 is in the second switching state, the compressor 140 is respectively communicated with the second heat exchanger 120 and the third heat exchanger 130, at this time, the compressor 140 compresses the working medium, so that the working medium flowing out of the compressor 140 is a high-temperature high-pressure gaseous working medium, the high-temperature high-pressure gaseous working medium is divided into two parts, one part flows through the second heat exchanger 120, the second heat exchanger 120 is a water side heat exchanger, that is, the second heat exchanger 120 heats water in a capillary network passing through the second heat exchanger, and the hot water in the capillary network heats up at a lower indoor temperature. The other path of working medium flows through the third heat exchanger 130, the third heat exchanger 130 further heats the indoor circulating air, the heated circulating air and the capillary network are heated indoors, and the state is suitable for indoor temperature deviation and outdoor temperature deviation.
In one embodiment, the air conditioning system 100 further includes a liquid storage tank 170, wherein the liquid storage tank 170 is connected between the first interface side2 of the third heat exchanger 130 and the first interface side1 of the first heat exchanger 110. The fluid reservoir 170 can store excess fluid in the air conditioning system 100 to cope with a variety of conditions requiring different amounts of fluid.
As shown in fig. 8 and 9, specifically, the air conditioning system 100 further includes a flow path switching device 180, where the flow path switching device 180 has a first flow path state and a second flow path state such that the working medium flows from the first interface side3 to the second interface side4 of the flow path switching device 180 when the flow path switching device 180 is in the first flow path state and the working medium flows from the second interface side4 to the first interface side3 when the flow path switching device 180 is in the second flow path state. The flow path switching device 180 can change the flow direction of the working medium by controlling the flow path state of the flow path switching device itself so as to meet different use scenes of the air conditioning system 100.
More specifically, the flow path switching device 180 includes a first flow path switching device 181, a second flow path switching device 182, and a third flow path switching device 183, the first flow path switching device 181 being connected between the liquid storage tank 170 and the first heat exchanger 110; the second flow path switching device 182 is connected to a side of the second heat exchanger 120 remote from the compressor 140; the third flow path switching device 183 is connected between the third heat exchanger 130 and the second flow path switching device 182.
More specifically, the first flow path switching device 181 includes a first check valve 181a and a first electronic expansion valve 181b, the second flow path switching device 182 includes a second check valve 182a and a second electronic expansion valve 182b, the third flow path switching device 183 includes a third check valve 183a and a throttling device 150, and the throttling device 150 includes a third expansion valve; wherein, the first check valve 181a is connected in parallel with the first electronic expansion valve 181b, the second check valve 182a is connected in parallel with the second electronic expansion valve 182b, and the third check valve 183a is connected in parallel with the third electronic expansion valve 183 b. Wherein, the orientation of the first check valve 181a is different from that of the third check valve 183 a. The second check valve 182a and the third check valve 183a are oriented differently when the switching valve device 160 is in the first switching state.
When the flow path switching device 180 is in the first flow path state, the working medium flows from the first interface side3 to the second interface side4 of the flow path switching device, that is, the working medium flows from the check valve side of the flow path switching device 180, in other words, when the first flow path switching device 181 is in the first flow path state, the working medium flows from the first check valve 181 a; when the second flow path switching device 182 is in the first flow path state, the working medium flows through the second check valve 182 a; when third flow switching device 183 is in the first flow state, the working fluid flows through third check valve 183 a.
When the flow path switching device 180 is in the second flow path state, the working medium flows from the second port side4 of the flow path switching device 180 to the first port side3, that is, the working medium flows from the electronic expansion valve side of the flow path switching device 180, in other words, when the first flow path switching device 181 is in the second flow path state, the working medium flows from the first electronic expansion valve 181 b; when the second flow path switching device 182 is in the second flow path state, the working medium flows through the second electronic expansion valve 182 b; when the third flow path switching device 183 is in the second flow path state, the working medium flows through the third electronic expansion valve 183 b.
In another embodiment, as shown in fig. 2, the switching valve device 160 includes a first switching valve 161, a second switching valve 162, and a third switching valve 163, the first switching valve 161 is disposed between the compressor 140 and the third heat exchanger 130, the second switching valve 162 is disposed between the second heat exchanger 120 and the third heat exchanger 130, and the third switching valve 163 is disposed between the second heat exchanger 120 and the first heat exchanger 110.
When the indoor temperature is lower and the humidity is higher, the second switching valve 162 is opened, the first switching valve 161 and the third switching valve 163 are closed, namely, the high-temperature and high-pressure gas working medium flowing out of the compressor 140 flows through the second heat exchanger 120 to heat water in a capillary network in the capillary network, so that circulating water in the capillary network heats the indoor, the low-temperature and low-pressure gas working medium flowing out of the second heat exchanger 120 further flows through the throttling device 150 to further limit the flow, specifically, the throttling device 150 is an electronic expansion valve, at the moment, the electronic expansion valve further cools the working medium to enable the working medium to be changed into a low-temperature and low-pressure gas-liquid two-phase state, and the low-temperature and low-pressure gas-liquid two-phase state passes through the third heat exchanger 130 to dehumidify indoor circulating air, so that the indoor temperature can be increased in the connection state and the indoor is dehumidified.
More specifically, when the indoor temperature is low and the outdoor temperature is also low, the first switching valve 161 and the third switching valve 163 are opened, and the second switching valve 162 is closed, at this time, a separate pipe needs to be introduced into one side of the throttling device 150 so that the high-temperature and high-pressure gas phase working medium flowing out of the compressor 140 does not pass through the throttling device 150, and thus the circulating air flowing through the third heat exchanger 130 is heated.
Therefore, according to the cooperation of the switching valve device 160 and the flow path switching device 180, the air conditioning system 100 has a plurality of specific usage conditions, and the following usage conditions are more commonly used:
as shown in fig. 5, in the single dehumidification mode, the compressor 140, the first heat exchanger 110, the liquid storage tank 170, the third electronic expansion valve 183b and the third heat exchanger 130 are sequentially connected, at this time, the high-temperature and high-pressure gaseous working medium flowing out of the compressor 140 flows through the first heat exchanger 110 to exchange heat, the working medium becomes a high-temperature and high-pressure liquid state, then flows through the third electronic expansion valve 183b to be further limited into low-temperature and low-pressure gas-liquid two phases, the low-temperature and low-pressure liquid working medium flows through the third heat exchanger 130, the third heat exchanger 130 performs low-temperature dehumidification on indoor circulated air, so that indoor air humidity is reduced, and the mode is suitable for the condition that indoor temperature is suitable but indoor humidity is higher.
As shown in fig. 6, in the single hot air mode, the compressor 140, the third heat exchanger 130, the liquid storage tank 170, the first electronic expansion valve 181b and the first heat exchanger 110 are sequentially connected, at this time, the high-temperature and high-pressure gaseous working medium produced by the compressor 140 passes through the third heat exchanger 130, the third heat exchanger 130 heats the indoor circulating air, the high-temperature and high-pressure liquid working medium flowing out of the third heat exchanger 130 passes through the first electronic expansion valve 181b to be limited and then becomes a low-temperature and low-pressure gas-liquid two-phase working medium, and then passes through the first heat exchanger 110 to exchange heat with the outdoor, so that the outdoor air is further absorbed, and the working medium which becomes a gas state enters the compressor 140 to start the next cycle, thereby being suitable for the application scenario when the indoor temperature is low.
As shown in fig. 7, in the refrigeration and dehumidification mode, the compressor 140 is connected to the first heat exchanger 110, the first heat exchanger 110 changes the high-temperature and high-pressure gaseous working medium flowing out of the compressor 140 into a high-temperature and high-pressure liquid working medium, the high-temperature and high-pressure liquid working medium is divided into two parts, one part is decompressed by the third electronic expansion valve 183b, and the other part becomes a low-temperature and low-pressure gas-liquid two-phase, and enters the third heat exchanger 130 to dehumidify indoor circulating air. The other path of high-temperature and high-pressure liquid working medium is decompressed by the second electronic expansion valve 182b to become low-temperature and low-pressure gas-liquid two-phase state, and then enters the second heat exchanger 120, cooling treatment is carried out on capillary tube network circulating water in the second heat exchanger 120, and then the circulating water cools the room, and the working medium passing through the third heat exchanger 130 and the second heat exchanger 120 becomes gas state and then enters the compressor 140 to start the next cycle. At this time, the air conditioning system 100 is suitable for a use scene where the indoor temperature is high and the humidity is high, and dehumidifies the indoor while cooling the indoor.
As shown in fig. 3, in the hot air heating mode, the high-temperature and high-pressure gaseous working medium from the compressor 140 is split into two parts, one part of the working medium passes through the second heat exchanger 120 to heat circulating water in the capillary network, and the capillary network heats indoor air; the other path of the air conditioning system is used for heating the indoor circulating water through the third heat exchanger 130, the indoor air is heated in a double way, working media passing through the second heat exchanger 120 and the third heat exchanger 130 become high-temperature high-pressure gas-liquid two phases, then the high-temperature high-pressure gas-liquid two phases are decompressed through the electronic expansion valve, the working media enter the first heat exchanger 110 to evaporate, gasify and absorb heat to become gas, meanwhile, heat of outdoor air is absorbed, the working media which become gas state enter the compressor 140 to start the next circulation, and at the moment, the air conditioning system 100 is suitable for a use scene with lower indoor temperature and lower outdoor temperature.
The foregoing description is only of the preferred embodiments of the present disclosure and description of the principles of the technology being employed. It will be appreciated by those skilled in the art that the scope of the application in the embodiments of the present disclosure is not limited to the specific combination of the above technical features, but encompasses other technical features formed by any combination of the above technical features or their equivalents without departing from the spirit of the application. Such as the above-described features, are mutually substituted with (but not limited to) the features having similar functions disclosed in the embodiments of the present disclosure.

Claims (10)

1. An air conditioning system, comprising:
the first heat exchanger is used for heating or cooling working media in the air conditioning system;
the second heat exchanger is used for heating or cooling working media in the air conditioning system;
the third heat exchanger is used for heating or cooling working media in the air conditioning system;
the compressor is used for compressing working media in the air conditioning system;
the throttling device is used for controlling the flow of working medium in the air conditioning system;
the method is characterized in that:
the first heat exchanger, the compressor, the second heat exchanger, the throttling device and the third heat exchanger are sequentially communicated.
2. An air conditioning system according to claim 1, wherein: the air conditioning system further includes:
a switching valve device connected between the compressor and the second heat exchanger and/or the third heat exchanger;
the switching valve device is provided with a first switching state and a second switching state, so that the compressor, the second heat exchanger and the third heat exchanger are sequentially communicated when the switching valve device is in the first switching state, and the compressor is respectively communicated with the second heat exchanger and the third heat exchanger when the switching valve device is in the second switching state.
3. An air conditioning system according to claim 2, wherein: the switching valve device comprises a three-way valve, wherein the three-way valve comprises a first valve port, a second valve port and a third valve port, the first valve port is connected to the first heat exchanger, the second valve port is connected to the compressor, and the third valve port is connected to the third heat exchanger;
the switching valve device is in a first switching state, the first valve port is communicated with the third valve port, the second valve port is closed, and the switching valve device is in a second switching state, the second valve port is communicated with the third valve port, and the first valve port is closed.
4. An air conditioning system according to claim 2, wherein: the switching valve device comprises a first switching valve, a second switching valve and a third switching valve, wherein the first switching valve is connected between the compressor and the third heat exchanger, the second switching valve is connected between the second heat exchanger and the third heat exchanger, and the third switching valve is connected between the second heat exchanger and the first heat exchanger.
5. An air conditioning system according to claim 1, wherein: the air conditioning system further comprises a liquid storage tank, and the liquid storage tank is connected between the first interface of the third heat exchanger and the first interface of the first heat exchanger.
6. An air conditioning system according to any of claims 1 to 5, characterized in that: the air conditioning system further includes a flow path switching device having a first flow path state and a second flow path state such that the working fluid flows from the first interface to the second interface of the flow path switching device when the flow path switching device is in the first flow path state and the working fluid flows from the second interface to the first interface of the flow path switching device when the flow path switching device is in the second flow path state.
7. An air conditioning system according to claim 6, wherein: the flow path switching device comprises a first flow path switching device, a second flow path switching device and a third flow path switching device, and the first flow path switching device is connected between the liquid storage tank and the first heat exchanger; the second flow path switching device is connected to one side of the second heat exchanger, which is far away from the compressor; the third flow path switching device is connected between the third heat exchanger and the second flow path switching device.
8. An air conditioning system according to claim 7, wherein: the first flow path switching device comprises a first one-way valve and a first electronic expansion valve, the second flow path switching device comprises a second one-way valve and a second electronic expansion valve, the third flow path switching device comprises a third one-way valve and a throttling device, and the throttling device comprises a third expansion valve;
the first check valve is connected with the first electronic expansion valve in parallel, the second check valve is connected with the second electronic expansion valve in parallel, and the third check valve is connected with the third electronic expansion valve in parallel.
9. An air conditioning system according to claim 8, wherein: the first one-way valve and the third one-way valve are oriented differently.
10. An air conditioning system according to claim 9, wherein: the second one-way valve and the third one-way valve are oriented differently when the switching valve device is in the first switching state.
CN202310587179.4A 2023-05-23 2023-05-23 Air conditioning system Pending CN116608511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310587179.4A CN116608511A (en) 2023-05-23 2023-05-23 Air conditioning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310587179.4A CN116608511A (en) 2023-05-23 2023-05-23 Air conditioning system

Publications (1)

Publication Number Publication Date
CN116608511A true CN116608511A (en) 2023-08-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310587179.4A Pending CN116608511A (en) 2023-05-23 2023-05-23 Air conditioning system

Country Status (1)

Country Link
CN (1) CN116608511A (en)

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