WO2021036781A1 - 多联机空调*** - Google Patents
多联机空调*** Download PDFInfo
- Publication number
- WO2021036781A1 WO2021036781A1 PCT/CN2020/108425 CN2020108425W WO2021036781A1 WO 2021036781 A1 WO2021036781 A1 WO 2021036781A1 CN 2020108425 W CN2020108425 W CN 2020108425W WO 2021036781 A1 WO2021036781 A1 WO 2021036781A1
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- WIPO (PCT)
- Prior art keywords
- refrigerant
- heat exchange
- pipe
- exchange coil
- heat exchanger
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
- F24F3/065—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units with a plurality of evaporators or condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/06—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
Definitions
- the invention belongs to the technical field of air conditioners, and specifically relates to a multi-line air conditioning system.
- the multi-connected air conditioning system has become an indispensable heat exchange device.
- most of the indoor units of the multi-line central air conditioner are connected to the same refrigerant circuit in parallel, so as to connect the outdoor unit through the refrigerant circuit.
- the other indoor units can only choose the same operation mode or not run, but cannot choose different modes, that is, all indoor units can only run the same heating/cooling mode , It is impossible for some indoor units to operate in heating mode and another part of indoor units to operate in cooling mode, and it is difficult to meet the room temperature adjustment needs of different users.
- the existing multi-line air-conditioning system includes a three-pipe valve box type multi-line central air conditioner, which can make indoor units of the same valve box refrigerant circuit operate in the same working mode by switching the refrigerant circuit.
- the indoor units with different valve box refrigerant circuits can be operated in different working modes.
- the disadvantage of the multi-line central air conditioner is that the overall flexibility of the multiple indoor units depends entirely on the number of valve boxes. If the number of valve boxes is configured too much, the complexity of the piping system of the multi-line central air conditioner will increase. If the number of valve boxes is configured too small and it is difficult for most indoor units to freely choose the working mode, the complexity of the pipeline system and the overall operational flexibility of multiple indoor units are difficult to coordinate.
- the present invention provides a A multi-line air-conditioning system
- the multi-line air-conditioning system includes a first heat exchange coil, a second heat exchange coil, and a plurality of indoor units, and flows in the first heat exchange coil and the second heat exchange coil
- the indoor unit includes a heat exchanger
- the heat exchanger is connected to the first heat exchange coil through a first refrigerant input pipe and a first refrigerant output pipe, so that the first heat exchange
- the refrigerant in the heat coil can flow into the heat exchanger through the first refrigerant input pipe, and the refrigerant in the heat exchanger can flow into the first heat exchange plate through the first refrigerant output pipe
- a first valve member is provided on the first refrigerant input
- the heat exchanger includes a refrigerant mixing pipe, the first refrigerant input pipe and the second refrigerant input pipe are in communication with the input end of the refrigerant mixing pipe, and the The first refrigerant output pipe and the second refrigerant output pipe communicate with the output end of the refrigerant mixing pipe.
- a third valve member is provided on the first refrigerant output pipe, and the third valve member is configured to be able to adjust the refrigerant flow rate in the first refrigerant output pipe, so
- the second refrigerant output pipe is provided with a fourth valve member, and the fourth valve member is configured to be able to adjust the refrigerant flow rate in the second refrigerant output pipe.
- the third valve member and/or the fourth valve member are electronic expansion valves.
- the heat exchanger includes a first heat exchange tube and a second heat exchange tube, and the input end of the first heat exchange tube is connected to the first refrigerant input tube, The output end of the first heat exchange tube is connected to the first refrigerant output tube, the input end of the second heat exchange tube is connected to the second refrigerant input tube, and the output end of the second heat exchange tube Connected with the second refrigerant output pipe.
- the first heat exchange tubes and the second heat exchange tubes are arranged in a staggered manner.
- the indoor unit further includes a blower, and the blower is arranged near the heat exchanger.
- the first valve member and/or the second valve member are electronic expansion valves.
- the first heat exchange coil and the second heat exchange coil belong to the same refrigerant circulation unit.
- the first heat exchange coil and the second heat exchange coil belong to two refrigerant circulation units respectively.
- the heat exchanger of each indoor unit of the multi-line air conditioning system of the present invention allows refrigerants of different temperatures in the first heat exchange coil and the second heat exchange coil to flow in at the same time.
- the heat exchangers of each indoor unit can emit different expected heat or cold, so that different heat exchangers With different heat exchange capabilities and realizing the free choice of the working mode of any indoor unit, the multi-line air-conditioning system of the present invention has multiple working modes (cooling/heating/partial cooling, partial heating) without adding complexity
- the diversity of the overall operation of the multi-connected air conditioning system is improved.
- the above-mentioned heat exchanger includes a refrigerant mixing tube that allows refrigerants of different temperatures in the first heat exchange coil and the second heat exchange coil to be mixed and flowed, so as to control the mixing ratio of the cold and hot refrigerants.
- the heat/cold transfer capacity of the heater is not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, but not limited to, heat exchanger.
- the above heat exchanger includes a first heat exchange tube and a second heat exchange tube.
- the first heat exchange tube allows the refrigerant in the first heat exchange coil to flow in
- the second heat exchange tube allows the refrigerant in the second heat exchange coil to flow in.
- the refrigerant flows in to adjust the heat/cold capacity transfer capacity of the heat exchanger as a whole by adjusting the respective refrigerant flow rates in the two heat exchange tubes.
- FIG. 1 is a schematic diagram of the overall structure of the first embodiment of the multi-connected air conditioning system of the present invention
- FIG. 2 is a schematic diagram of the overall structure of the second embodiment of the multi-connected air conditioning system of the present invention.
- first heat exchange part 101, first heat exchange coil; 102, evaporator; 103, first compressor; 2. second heat exchange part; 201, second heat exchange coil; 202. Condenser; 203. Second compressor; 3. Indoor unit; 4. Air blower; 5. First refrigerant input pipe; 6. First refrigerant output pipe; 7. First valve; 8. Second Refrigerant input pipe; 9. Second refrigerant output pipe; 10. Second valve; 11. Three-way joint; 12. Third compressor.
- connection should be understood in a broad sense.
- they can be fixed or fixed. It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
- connection should be understood in a broad sense.
- they can be fixed or fixed. It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
- the specific meaning of the above-mentioned terms in the present invention can be understood according to specific circumstances.
- the multi-line system of the present invention includes a first heat exchange coil 101, a second heat exchange coil 201 and a plurality of indoor units 3, wherein the first heat exchange coil 101 and the second heat exchange coil Refrigerants with different temperatures flow in the heat exchange coil 201, and the indoor unit 3 includes a heat exchanger (located inside the indoor unit 3, not shown in the figure) and a blower 4.
- the blower 4 is arranged near the heat exchanger to promote the flow of the hot air or cold air after the heat exchange with the heat exchanger into the room.
- the heat exchanger is connected to the first heat exchange coil 101 through the first refrigerant input pipe 5 and the first refrigerant output pipe 6, so that the refrigerant in the first heat exchange coil 101 can flow into the heat exchange through the first refrigerant input pipe 5
- the refrigerant in the heat exchanger can flow into the first heat exchange coil 101 through the first refrigerant output pipe 6.
- a first valve member 7 is provided on the first refrigerant input pipe 5, and the first valve member 7 is configured to be able to adjust the refrigerant flow rate in the first refrigerant input pipe 5.
- the heat exchanger is also connected to the second heat exchange coil 201 through the second refrigerant input pipe 8 and the second refrigerant output pipe 9, so that the refrigerant in the second heat exchange coil 201 can flow into and exchange through the second refrigerant input pipe 8.
- the refrigerant in the heat exchanger can flow into the second heat exchange coil 201 through the second refrigerant output pipe 9.
- a second valve member 10 is provided on the second refrigerant input pipe 8, and the second valve member 10 is configured to be able to adjust the refrigerant flow rate in the second refrigerant input pipe 8.
- the first refrigerant input pipe 5 and the first refrigerant output pipe 6 can constitute one refrigerant circuit
- the second refrigerant input pipe 8 and the second refrigerant output pipe 9 can constitute another refrigerant circuit.
- the heat exchanger is connected to the two refrigerant circuits at the same time, so that the refrigerant flowing out of the first heat exchange coil 101 and the refrigerant flowing out of the second heat exchange coil 201 can respectively flow through the heat exchanger through the corresponding refrigerant circuit. It flows into the first heat exchange coil 101 and the second heat exchange coil 201.
- the first valve member 7 and the second valve member 10 are used to control the temperature of the refrigerant in the first heat exchange coil 101, respectively.
- the flow rate of the outgoing refrigerant and the flow rate of the refrigerant out of the second heat exchange coil 201 can adjust the ratio of the amount of refrigerant at two different temperatures flowing through the heat exchanger at the same time, and then set the ratio according to the heat exchange requirements of each heat exchanger.
- each heat exchanger can flow through the refrigerant at a set temperature, so that each heat exchanger has its own expected heat/cold capacity transfer capacity, so that each indoor unit 3 can be adjusted according to its own Set the ratio of the refrigerant flowing through the heat exchangers of the indoor unit 3 to achieve independent heating or cooling of each indoor unit 3.
- the multi-connected air-conditioning system includes an outdoor part and an indoor part, wherein the outdoor part is divided into two parts including the first heat exchange coil 101 and the second heat exchange coil 201 A small part, the indoor part includes a plurality of indoor units 3.
- One of the two small parts of the heat exchange coil can flow a refrigerant with a constant temperature and a higher temperature, and the other can flow a refrigerant with a constant and lower temperature (hereinafter, the two temperature refrigerants are referred to as high-temperature refrigerant and low-temperature refrigerant) .
- the two refrigerant circuits composed of the first refrigerant input pipe 5 and the first refrigerant output pipe 6, as well as the second refrigerant input pipe 8 and the second refrigerant output pipe 9 respectively, enable the first heat exchange plate
- the high-temperature refrigerant and the low-temperature refrigerant in the tube 101 and the second heat exchange coil 201 simultaneously flow through the heat exchanger at a set flow rate (the set flow rate can be adjusted by the first valve member 7 and the second valve member 10).
- the heat exchangers of multiple indoor units 3 are connected in parallel to the part containing the first heat exchange coil 101 at the same time And the part containing the second heat exchange coil 201.
- the first heat exchange coil 101 and the second heat exchange coil 201 continuously flow out high temperature refrigerant and low temperature refrigerant at a constant temperature
- the high temperature refrigerant and the low temperature refrigerant can be simultaneously delivered to each heat exchanger through two refrigerant circuits .
- the overall temperature of the high and low temperature refrigerant flowing through the heat exchanger can be changed, so that each heat exchanger can release the expected heat or cold energy and reduce the heat Or cold energy is transferred to the airflow, and then forms a hot or cold airflow of different temperatures that meets the room temperature adjustment needs of each user, which realizes the independent control of each indoor unit 3, so that any indoor unit 3 can freely choose the operating cooling mode Or heating mode to meet the temperature control needs of different users.
- FIG. 1 shows an overall structure of the first embodiment of the multi-line air conditioning system of the present invention.
- the first heat exchange coil 101 and the second heat exchange coil 201 belong to two refrigerant circulation units respectively, that is, the part containing the first heat exchange coil 101 itself can constitute a complete
- the refrigerant circulation unit realizes the closed circulation of the refrigerant.
- the part containing the second heat exchange coil 201 itself can constitute another complete refrigerant circulation unit and realize the closed circulation of the refrigerant.
- Each indoor unit 3 is connected to the refrigerant circulation unit including the first heat exchange coil 101 through a refrigerant circuit, and is connected to the refrigerant circulation unit including the second heat exchange coil 201 through another refrigerant circuit.
- a plurality of indoor units 3 are connected in parallel to two refrigerant circulation units through this connection method.
- Figure 1 shows the first heat exchange part 1 (that is, one of the refrigerant circulating units), the second heat exchange part 2 (that is, the other of the refrigerant circulating units), multiple indoor units 3, and refrigerant pipelines.
- All the arrows in the figure indicate the flow direction of the refrigerant.
- the first heat exchange part 1 includes a first heat exchange coil 101, an evaporator 102, a first compressor 103, and a throttling device (not shown in the figure) (the first heat exchange part 1 in FIG. 1
- the second heat exchange part 2 only shows the components of the heat exchange coil, evaporator, condenser, compressor, refrigerant flow pipeline, etc., but does not show the specific connection relationship between the components.
- the first change in the figure The distribution and connection diagrams of the components of the hot part 1 and the second heat exchange part 2 do not represent the actual installation positions and pipeline connections of the components of the first heat exchange part 1 and the second heat exchange part 2.
- Fig. 2 is the same as Fig. 1) ,
- the first heat exchange coil 101, the evaporator 102, the first compressor 103 and the throttling device are connected to form a closed refrigerant circulation circuit through the refrigerant flow pipeline.
- the second heat exchange section 2 includes a second heat exchange coil 201, a condenser 202, a second compressor 203, and a throttling device (not shown in the figure).
- the second heat exchange coil 201, a condenser 202, and a second The compressor 203 and the throttling device are connected to form another closed refrigerant circulation circuit through the refrigerant flow pipeline.
- the specific pipeline connection scheme of the first heat exchange part 1 and the second heat exchange part 2 will not be described in detail here.
- the two ends of the first refrigerant input pipe 5 are respectively connected to the refrigerant input end of the heat exchanger and the refrigerant output end of the first heat exchange coil 101, and the two ends of the first refrigerant output pipe 6 are respectively connected to the refrigerant output of the heat exchanger End and the refrigerant input end of the first heat exchange coil 101.
- the first valve 7 is arranged on the first refrigerant input pipe 5 between the refrigerant input end of the heat exchanger and the refrigerant output end of the first heat exchange coil 101 to control the flow of the high temperature refrigerant flowing into the heat exchanger .
- the second valve 10 is arranged on the second refrigerant input pipe 8 between the refrigerant input end of the heat exchanger and the refrigerant output end of the second heat exchange coil 201, so as to control the flow of low temperature refrigerant flowing into the heat exchanger .
- the above-mentioned heat exchanger includes a refrigerant mixing tube.
- the refrigerant output ends of the first refrigerant input pipe 5 and the second refrigerant input pipe 8 are both connected with the input end of the refrigerant mixing pipe, and the refrigerant input ends of the first refrigerant output pipe 6 and the second refrigerant output pipe 9 are both connected with the refrigerant mixing pipe
- the output ends of the first heat exchange coil 101 are connected, and the low temperature refrigerant in the second heat exchange coil 201 can flow into the heat exchanger through the first refrigerant input pipe 5 and the second refrigerant input pipe 8 respectively.
- the refrigerant mixes When inside the tube, the refrigerants of two temperatures will be mixed into the refrigerant of the expected temperature, so that the heat exchanger can release the expected heat and cold, and realize the heat exchange with the airflow.
- the multi-line air conditioning system of the present invention further includes a plurality of three-way joints 11.
- the three-way joint 11 includes a refrigerant output terminal and two refrigerant input terminals.
- the refrigerant output end of the first refrigerant input pipe 5 is connected to one refrigerant input end of the three-way joint 11, and the refrigerant output end of the second refrigerant input pipe 8 is connected to the other refrigerant input end of the three-way joint 11.
- the refrigerant output end is in communication with the refrigerant input section of the refrigerant mixing pipe, so as to realize the combined connection of the first refrigerant input pipe 5 and the second refrigerant input pipe 8 with the refrigerant mixing pipe.
- the above implementation is only a preferred example of the present invention.
- the designer can choose any one that can realize the combined connection of the first refrigerant input pipe 5 and the second refrigerant input pipe 8 with the refrigerant mixing pipe.
- the refrigerant output ends of the first refrigerant input pipe 5 and the second refrigerant input pipe 8 are integrated, and the first refrigerant input pipe 5 and the second refrigerant input pipe 8 share a refrigerant output port.
- a third valve member (not shown in the figure) is provided on the first refrigerant output pipe 6, and the third valve member is configured to be able to adjust the refrigerant flow rate in the first refrigerant output pipe 6.
- a fourth valve member is provided on the second refrigerant output pipe 9, and the fourth valve member is configured to be able to adjust the refrigerant flow rate in the second refrigerant output pipe 9.
- the heat exchanger includes a first heat exchange tube and a second heat exchange tube, the refrigerant input end of the first heat exchange tube is connected to the first refrigerant input tube 5, and the refrigerant of the first heat exchange tube The output end is connected with the first refrigerant output tube 6 so that the high-temperature refrigerant in the first heat exchange tube can flow through the first heat exchange tube.
- the refrigerant input end of the second heat exchange tube is connected to the second refrigerant input tube 8, and the refrigerant output end of the second heat exchange tube is connected to the second refrigerant output tube 9 so that the low temperature refrigerant in the second heat exchange tube can flow through the first 2.
- Heat exchange tube is connected to the second refrigerant input tube 8
- the refrigerant output end of the second heat exchange tube is connected to the second refrigerant output tube 9 so that the low temperature refrigerant in the second heat exchange tube can flow through the first 2.
- the heat released by the first heat exchange tube and the cold energy released by the second heat exchange tube can be integrated into The expected heat/cold capacity, so that the airflow can exchange heat with the heat exchanger that emits the expected heat/cold capacity, and become a hot airflow or a cold airflow at a set temperature.
- the refrigerants of the two refrigerant circulation units since the refrigerants of the two refrigerant circulation units always circulate independently and are not mixed and converge, the refrigerants in the two refrigerant circulation units may be the same type of refrigerant or different types of refrigerants.
- first heat exchange tube and the second heat exchange tube are arranged in a staggered manner to avoid uneven distribution of the heat/cold amount emitted by the heat exchanger.
- the specific manner of the above-mentioned staggered arrangement is not limited, and the specific staggered form can be set according to pipeline arrangement requirements, specific heat exchange requirements, etc.
- the first heat exchange tube and the second heat exchange tube can be wound around each other, or the first heat exchange tube and the second heat exchange tube respectively include a multi-layer connected and curved and coiled surface structure.
- the surface structure and the surface structure of the second heat exchange tube are arranged to cross each other.
- any one or more (two or more) of the first valve element 7, the second valve element 10, the third valve element, and the fourth valve element are electronic expansion valves.
- the opening degree of the electronic expansion valve By adjusting the opening degree of the electronic expansion valve, the refrigerant flow of the pipe where the corresponding valve is located can be adjusted.
- the above-mentioned valve member may also be a valve capable of adjusting the flow of refrigerant besides the electronic expansion valve.
- the above-mentioned four valve parts may be the same type of flow control valve, or may include multiple flow control valves.
- FIG. 2 shows an overall structure of the second embodiment of the multi-line air conditioning system of the present invention.
- the first heat exchange coil 101 and the second heat exchange coil 201 belong to the same refrigerant circulation unit, that is, the part containing the first heat exchange coil 101 and the second heat exchange coil
- the parts of the coil 201 together constitute a complete refrigerant circulation unit, which realizes the closed circulation of the refrigerant.
- Each indoor unit 3 is connected to the refrigerant circulation unit through two refrigerant circuits.
- a plurality of indoor units 3 are connected in parallel to the refrigerant circulation unit through this connection method. Specifically, FIG.
- FIG. 2 shows the first heat exchange coil 101, the second heat exchange coil 201, the third compressor 12, a plurality of indoor units 3, and refrigerant flow pipelines. All arrows in the figure indicate The flow direction of the refrigerant. Taking the first heat exchange coil 101 as the high temperature refrigerant, the first heat exchange coil 101 as the condenser 202, the second heat exchange coil 201 as the low temperature refrigerant, and the second heat exchange coil 201 as the evaporator 102 As an example, the first heat exchange coil 101, the second heat exchange coil 201, the third compressor 12, and the throttling device (not shown in the figure) are connected to form a closed refrigerant circulation circuit through a refrigerant flow pipeline.
- the pipeline connection method of the refrigerant circulation circuit is the same as the pipeline construction method of the refrigerant circulation circuit of a conventional air conditioner.
- the two ends of the first refrigerant input pipe 5 are respectively connected to the refrigerant input end of the heat exchanger and the refrigerant output end of the first heat exchange coil 101, and the two ends of the second refrigerant output pipe 9 are respectively connected to the refrigerant output of the heat exchanger And the refrigerant output end of the first heat exchange coil 101 so that the refrigerant in the refrigerant output pipe of the first heat exchange coil 101 can flow into the refrigerant output pipe after flowing through the heat exchanger.
- the first valve 7 is arranged on the first refrigerant input pipe 5, between the refrigerant input end of the heat exchanger and the refrigerant output end of the first heat exchange coil 101, so as to control the flow of the high temperature refrigerant flowing into the heat exchanger .
- Two ends of the second refrigerant input pipe 8 are respectively connected to the refrigerant input end of the heat exchanger and the refrigerant output end of the second heat exchange coil 201, and both ends of the second refrigerant output pipe 9 are respectively connected to the refrigerant output of the heat exchanger And the refrigerant input end of the second heat exchange coil 201, so that the refrigerant in the refrigerant output pipe of the second heat exchange coil 201 can flow into the refrigerant output pipe after flowing through the heat exchanger.
- the second valve 10 is arranged on the second refrigerant input pipe 8 between the refrigerant input end of the heat exchanger and the refrigerant output end of the second heat exchange coil 201, so as to control the flow of low temperature refrigerant flowing into the heat exchanger .
- the above heat exchanger can be configured to allow mixed flow of high-temperature refrigerant and low-temperature refrigerant, such as a refrigerant mixing tube, or a structure that allows high-temperature refrigerant and low-temperature refrigerant to flow independently in parallel, such as a first heat exchange tube. And the second heat exchange tube.
- a refrigerant mixing tube or the first heat exchange tube and the second heat exchange tube has been described in the foregoing, so it will not be repeated here.
- both the first heat exchange coil 101 and the second heat exchange coil 201 can output a refrigerant with a constant temperature.
- the standard for constant temperature may specifically be that the fluctuation value of the temperature of the refrigerant does not exceed the set difference.
- the setting difference is 1 degree
- the high temperature refrigerant is set to 50 degrees
- the low temperature refrigerant is 20 degrees
- the temperature of the high temperature refrigerant can be maintained at any temperature in the range of 49 degrees to 51 degrees
- the temperature of the low temperature refrigerant is maintained Any temperature within the range of 19 degrees to 21 degrees is fine.
- the above-mentioned setting difference can be set according to the expected operating stability of the multi-connected air-conditioning system.
- some indoor units 3 of the multiple indoor units 3 may not When independent operation control is required, this part of the indoor unit 3 can also be connected in parallel to the same first refrigerant input pipe 5 and the same second refrigerant input pipe 8 and the same first refrigerant output pipe 6 and the same second refrigerant output pipe 9 Therefore, the entire (mixed) temperature of the refrigerant flowing through the heat exchanger of the partial indoor unit 3 is the same. Or, when the number of the part of the indoor unit 3 is small, the part of the indoor unit 3 may also be connected in series to the same first refrigerant input pipe 5 and the same second refrigerant input pipe 8 and the same first refrigerant output pipe 6 And the same second refrigerant output pipe 9.
- the technical solution adjusted in this way does not deviate from the basic principle of the present invention, and therefore will fall within the protection scope of the present invention.
- the heat exchanger of each indoor unit 3 of the multi-unit air conditioning system of the present invention allows the high-temperature refrigerant in the first heat exchange coil 101 and the low-temperature refrigerant in the second heat exchange coil 201 to flow in at the same time.
- the heat exchangers of each indoor unit 3 can emit different expected heat or cold, so as to make different
- the heat exchanger has different heat exchange capabilities and realizes the free choice of the working mode of any indoor unit 3, so that the multi-line air-conditioning system of the present invention has multiple working modes (cooling/heating/partial cooling, partial heating), Without adding multiple complicated refrigerant switching pipelines, the diversity of the overall operation of the multi-connected air conditioning system is improved.
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
Abstract
一种多联机空调***,包括第一换热盘管(101)、第二换热盘管(201)和多个室内机(3),第一换热盘管(101)和第二换热盘管(201)中流动着温度不同的冷媒。室内机(3)包括换热器和送风风机(4)。换热器通过第一冷媒输入管(5)和第一冷媒输出管(6)与第一换热盘管(101)相连,以使第一换热盘管(101)中的冷媒能够通过第一冷媒输入管(5)流入换热器中,并使换热器中的冷媒能够通过第一冷媒输出管(6)流入第一换热盘管(101)中。第一冷媒输入管(5)上设置有第一阀件(7),第一阀件(7)设置为能够调节第一冷媒输入管(5)中的冷媒流量。换热器还通过第二冷媒输入管(8)和第二冷媒输出管(9)与第二换热盘管(201)相连,以使第二换热盘管(201)中的冷媒能够通过第二冷媒输入管(8)流入换热器中,并使换热器中的冷媒能够通过第二冷媒输出管(9)流入第二换热盘管(201)中。第二冷媒输入管(8)上设置有第二阀件(10),第二阀件(10)设置为能够调节第二冷媒输入管(8)中的冷媒流量。当第一换热盘管(101)和第二换热盘管(201)内的冷媒温度不同时,通过第一阀件(7)和第二阀件(10)分别控制第一换热盘管(101)内流出的冷媒流量和第二换热盘管(201)内流出的冷媒流量,能够调控同时流经换热器的两种不同温度的冷媒量比例,进而在根据各换热器的换热需求设定该冷媒量比例的情形下,使得每个换热器具备其各自预期的热量/冷量传递能力,进而使每个室内机(3)均能够根据各自的换热需求设定共同流经室内机(3)的换热器的冷媒比例,实现各室内机(3)的独立制热或制冷。
Description
本发明属于空调器技术领域,具体涉及一种多联机空调***。
随着人们生活水平的不断提高,人们对生活环境也提出了越来越高的要求。为了使中大型场所维持舒适的环境温度,多联机空调***已经成为一种必不可少的换热设备。目前市场中,多联机中央空调的多个室内机大多以并联方式连通至同一冷媒回路上,以便通过该冷媒回路连通室外机。在此情形下,当部分室内机处于制冷或者制热模式时,其余室内机只能选择相同的运行模式或者不运行,而不能选择不同模式,即所有室内机只能运行同一制热/制冷模式,不能出现部分室内机运行制热模式、另一部分室内机运行制冷模式的情况,难以满足不同用户的室温调节需求。
进一步地,现有多联机空调***包括一种三管路阀盒式多联机中央空调,该多联机中央空调能够通过切换冷媒回路的方式使同一阀盒冷媒回路的室内机以同一工作模式运行,使不同阀盒冷媒回路的室内机能够以不同工作模式运行。但是该多联机中央空调的弊端在于:多个室内机的整体运行灵活程度完全依赖于阀盒的数量,如果阀盒数量配置过多则增大了多联机中央空调的管路***的复杂度,如果阀盒数量配置过少又难以使大部分室内机自由选择工作模式,管路***的复杂度与多个室内机的整体运行灵活度难以协调。
相应地,本领域需要一种新的多联机空调***来解决上述问题。
发明内容
为了解决现有技术中的上述问题,即为了解决现有多联机中央空调难以在保证其管路***的简洁度的同时实现多个室内机灵活运 行不同工作模式的问题,本发明提供了一种多联机空调***,所述多联机空调***包括第一换热盘管、第二换热盘管和多个室内机,所述第一换热盘管和所述第二换热盘管中流动着温度不同的冷媒,所述室内机包括换热器,所述换热器通过第一冷媒输入管和第一冷媒输出管与所述第一换热盘管相连,以使所述第一换热盘管中的冷媒能够通过所述第一冷媒输入管流入所述换热器中,并使所述换热器中的冷媒能够通过所述第一冷媒输出管流入所述第一换热盘管中,所述第一冷媒输入管上设置有第一阀件,所述第一阀件设置为能够调节所述第一冷媒输入管中的冷媒流量,所述换热器还通过第二冷媒输入管和第二冷媒输出管与所述第二换热盘管相连,以使所述第二换热盘管中的冷媒能够通过所述第二冷媒输入管流入所述换热器中,并使所述换热器中的冷媒能够通过所述第二冷媒输出管流入所述第二换热盘管中,所述第二冷媒输入管上设置有第二阀件,所述第二阀件设置为能够调节所述第二冷媒输入管中的冷媒流量。
在上述多联机空调***的优选技术方案中,所述换热器包括冷媒混合管,所述第一冷媒输入管和所述第二冷媒输入管与所述冷媒混合管的输入端连通,所述第一冷媒输出管和所述第二冷媒输出管与所述冷媒混合管的输出端连通。
在上述多联机空调***的优选技术方案中,所述第一冷媒输出管上设置有第三阀件,所述第三阀件设置为能够调节所述第一冷媒输出管中的冷媒流量,所述第二冷媒输出管上设置有第四阀件,所述第四阀件设置为能够调节所述第二冷媒输出管中的冷媒流量。
在上述多联机空调***的优选技术方案中,所述第三阀件和/或所述第四阀件为电子膨胀阀。
在上述多联机空调***的优选技术方案中,所述换热器包括第一换热管和第二换热管,所述第一换热管的输入端与所述第一冷媒输入管相连,所述第一换热管的输出端与所述第一冷媒输出管相连,所述第二换热管的输入端与所述第二冷媒输入管相连,所述第二换热管的输出端与所述第二冷媒输出管相连。
在上述多联机空调***的优选技术方案中,所述第一换热管和所述第二换热管交错设置。
在上述多联机空调***的优选技术方案中,所述室内机还包括送风风机,所述送风风机设置在所述换热器附近。
在上述多联机空调***的优选技术方案中,所述第一阀件和/或所述第二阀件为电子膨胀阀。
在上述多联机空调***的优选技术方案中,所述第一换热盘管和所述第二换热盘管共属于同一个冷媒循环机组。
在上述多联机空调***的优选技术方案中,所述第一换热盘管和所述第二换热盘管分别属于两个冷媒循环机组。
本领域技术人员能够理解的是,本发明的多联机空调***的每个室内机的换热器均允许第一换热盘管和第二换热盘管内不同温度的冷媒同时流入。在此情形下,通过控制第一换热盘管和第二换热盘管的冷媒流量比例,可使各室内机的换热器散发出不同的预期热量或冷量,从而使不同换热器具备不同的换热能力、实现任意一个室内机的工作模式的自由选择,使得本发明的多联机空调***具备多种工作模式(制冷/制热/部分制冷、部分制热),在不增添复杂的冷媒切换管路的情形下提升了多联机空调***的整体运行情况的多样性。
优选地,上述换热器包括冷媒混合管,该冷媒混合管允许第一换热盘管和第二换热盘管内不同温度的冷媒混合流入,以便通过控制冷、热冷媒的混合比例调控各换热器的热量/冷量传递能力。
可替代地,上述换热器包括第一换热管和第二换热管,第一换热管允许第一换热盘管内的冷媒流入,第二换热管允许第二换热盘管内的冷媒流入,以便通过调控两个换热管内各自的冷媒流量来调整换热器整体的热量/冷量传递能力。
下面参照附图来描述本发明的优选实施方式。附图为:
图1是本发明的多联机空调***的第一实施方式的整体结构示意图;
图2是本发明的多联机空调***的第二实施方式的整体结构示意图。
附图标记:1、第一换热部分;101、第一换热盘管;102、蒸发器;103、第一压缩机;2、第二换热部分;201、第二换热盘管;202、冷凝器;203、第二压缩机;3、室内机;4、送风风机;5、第一冷媒输入管;6、第一冷媒输出管;7、第一阀件;8、第二冷媒输入管;9、第二冷媒输出管;10、第二阀件;11、三通接头;12、第三压缩机。
首先,本领域技术人员应当理解的是,这些实施方式仅仅用于解释本发明的技术原理,并非旨在限制本发明的保护范围。本领域技术人员可以根据需要对其进行相应调整,以便适应具体的应用场合。此外,还需要说明的是,在本发明的描述中,术语“第一”、“第二”、“第三”仅用于描述目的,而不能理解为指示或暗示相对重要性。
此外,还需要说明的是,在本发明的描述中,除非另有明确的规定和限定,术语“连通”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域技术人员而言,可根据具体情况理解上述术语在本发明中的具体含义。
如图1或者图2所示,本发明的多联机***包括第一换热盘管101、第二换热盘管201和多个室内机3,其中,第一换热盘管101和第二换热盘管201中流动着温度不同的冷媒,室内机3包括换热器(位于室内机3的内部,图中未示出)和送风风机4。送风风机4设置在换热器附近,以便促进与换热器换热后的热气流或者冷气流流动至室内。换热器通过第一冷媒输入管5和第一冷媒输出管6与第一换热盘管101相连,以使第一换热盘管101中的冷媒能够通过第一冷媒输入管5流入换热器中,并使换热器中的冷媒能够通过第一冷媒输出管6流入第一换热盘管101中。第一冷媒输入管5上设置有第一阀件7,第一阀件7设置为能够调节第一冷媒输入管5中的冷媒流量。换热器还通过第二冷媒输入管8和第二冷媒输出管9与第二换热盘管201相连,以使第二换热盘管201中的冷媒能够通过第二冷媒输入管8流入换热器中,并使换热器中的冷媒能够通过第二冷媒输出管9流入第二换热 盘管201中。第二冷媒输入管8上设置有第二阀件10,第二阀件10设置为能够调节第二冷媒输入管8中的冷媒流量。也就是说,第一冷媒输入管5和第一冷媒输出管6能够构成一条冷媒回路,第二冷媒输入管8和第二冷媒输出管9能够构成另一条冷媒回路。换热器同时与这两条冷媒回路连通,使得第一换热盘管101内流出的冷媒和第二换热盘管201内流出的冷媒能够分别通过相应的冷媒回路流经换热器后再流入第一换热盘管101和第二换热盘管201内。在此情形下,当第一换热盘管101和第二换热盘管201内的冷媒温度不同时,通过第一阀件7和第二阀件10分别控制第一换热盘管101内流出的冷媒流量和第二换热盘管201内流出的冷媒流量,能够调控同时流经换热器的两种不同温度的冷媒量比例,进而在根据各换热器的换热需求设定该冷媒量比例的情形下,能够使各换热器流经设定温度的冷媒,使得每个换热器具备其各自预期的热量/冷量传递能力,进而使每个室内机3均能够根据各自的换热需求设定共同流经室内机3的换热器的冷媒比例,实现各室内机3的独立制热或制冷。
在上述多联机空调***的实施方式中,该多联机空调***包括室外部分和室内部分,其中,室外部分被划分为包含第一换热盘管101和包含第二换热盘管201的两个小部分,室内部分包括多个室内机3。该两个小部分的换热盘管中的一个能够流动温度恒定且较高的冷媒,另一个能够流动温度恒定且较低的冷媒(以下将两种温度的冷媒简称为高温冷媒和低温冷媒)。单就一个室内机3而言,第一冷媒输入管5和第一冷媒输出管6以及第二冷媒输入管8和第二冷媒输出管9分别组成的两条冷媒回路能够使第一换热盘管101和第二换热盘管201内的高温冷媒和低温冷媒同时以设定流量(该设定流量可以通过第一阀件7和第二阀件10调整)流经换热器。在每个换热器均采用双冷媒回路的管路连接方式安装于多联机空调***中时,多个室内机3的换热器以并联方式同时连通至包含第一换热盘管101的部分和包含第二换热盘管201的部分。在第一换热盘管101和第二换热盘管201持续流出温度恒定的高温冷媒和低温冷媒的情形下,高温冷媒和低温冷媒能够通过两条冷媒回路被同时向输送每个换热器。通过调节每个冷媒回路上的阀件的开度,能够改变流经换热器的高、低温冷媒的整体温 度,从而使每个换热器能够释放出预期的热量或冷量并将该热量或冷量传递给气流,进而形成符合各用户的室温调节需求的、不同温度的热气流或冷气流,实现了每个室内机3的独立控制,使得任意室内机3均可自由选择运行制冷模式或者制热模式,满足了不同用户的温控需求。无需为多个室内机3设置复杂的冷媒切换管路,以使管路结构简洁、易布置,冷媒流动控制更加简单、易实现,便于安装和维护,实用性更强。
继续参阅图1,图1示出了本发明的多联机空调***的第一实施方式的一种整体结构。在本发明的第一实施方式中,第一换热盘管101和第二换热盘管201分别属于两个冷媒循环机组,即包含第一换热盘管101的部分自身能够构成一个完整的冷媒循环机组、实现冷媒的闭合循环。包含第二换热盘管201的部分自身能够构成另一个完整的冷媒循环机组、实现冷媒的闭合循环。每个室内机3通过一条冷媒回路连通至包含第一换热盘管101的冷媒循环机组,并通过另一条冷媒回路连通至包含第二换热盘管201的冷媒循环机组。多个室内机3通过该连接方式并联至两个冷媒循环机组上。具体而言,图1中示出了第一换热部分1(即其中一个冷媒循环机组)、第二换热部分2(即其中另一个冷媒循环机组)、多个室内机3以及冷媒管路,图中的所有箭头均表示冷媒的流动方向。以第一换热盘管101流出的是高温冷媒、第一换热盘管101为冷凝器202以及第二换热盘管201流出的是低温冷媒、第二换热盘管201为蒸发器102为例,第一换热部分1包括第一换热盘管101、蒸发器102、第一压缩机103和节流装置(图中未示出)(图1中的第一换热部分1/第二换热部分2仅示意出了换热盘管、蒸发器、冷凝器、压缩机、冷媒流动管路等部件组成,但并未示出各部件间具体的连接关系,图中第一换热部分1/第二换热部分2的部件分布与连接示意并不代表第一换热部分1和第二换热部分2的各部件真实安装位置和管路连接方式。图2同图1),第一换热盘管101、蒸发器102、第一压缩机103和节流装置通过冷媒流动管路连通成一个闭合的冷媒循环回路。第二换热部分2包括第二换热盘管201、冷凝器202、第二压缩机203和节流装置(图中未示出),第二换热盘管201、冷凝器202、第二压缩机203和节流装置通过冷媒流动管路连 通成另一个闭合的冷媒循环回路。鉴于上述冷媒循环回路的管路连通方式与常规空调器的冷媒循环回路的构建方式相同,所以在此不再详细阐述第一换热部分1和第二换热部分2的具体管路连接方案。第一冷媒输入管5的两端分别连通至换热器的冷媒输入端与第一换热盘管101的冷媒输出端,第一冷媒输出管6的两端分别连通至换热器的冷媒输出端与第一换热盘管101的冷媒输入端。第一阀件7设置于第一冷媒输入管5上、位于换热器的冷媒输入端与第一换热盘管101的冷媒输出端之间,以便控制流入换热器内的高温冷媒的流量。第二冷媒输入管8的两端分别连通至换热器的冷媒输入端与第一换热盘管101的冷媒输出端,第二冷媒输出管9的两端分别连通至换热器的冷媒输出端与第一换热盘管101的冷媒输入端。第二阀件10设置于第二冷媒输入管8上、位于换热器的冷媒输入端与第二换热盘管201的冷媒输出端之间,以便控制流入换热器内的低温冷媒的流量。
进一步地,上述换热器包括冷媒混合管。第一冷媒输入管5和第二冷媒输入管8的冷媒输出端均与该冷媒混合管的输入端连通,第一冷媒输出管6和第二冷媒输出管9的冷媒输入端均与冷媒混合管的输出端连通,使得第一换热盘管101内的高温冷媒和第二换热盘管201内的低温冷媒能够分别通过第一冷媒输入管5和第二冷媒输入管8流入换热器内,并且在换热器的冷媒混合管内混合成预期温度的冷媒,然后再分流至第一冷媒输出管6和第二冷媒输出管9内、通过第一冷媒输出管6和第二冷媒输出管9分别流入第一换热盘管101和第二换热盘管201。在此情形下,就任意一个室内机3而言,当第一换热盘管101内的高温冷媒和第二换热盘管201内的低温冷媒分别以一定流量流入该室内机3的冷媒混合管内时,两种温度的冷媒会混合成预期温度的冷媒,从而使得换热器释放出预期的热量和冷量、实现与气流的热交换。
更进一步地,如图1所示,本发明的多联机空调***还包括多个三通接头11。该三通接头11包括一个冷媒输出端和两个冷媒输入端。第一冷媒输入管5的冷媒输出端连通至三通接头11的一个冷媒输入端,第二冷媒输入管8的冷媒输出端连通至三通接头11的另一个冷媒输入端,三通接头11的冷媒输出端与冷媒混合管的冷媒输入段连通, 从而实现第一冷媒输入管5和第二冷媒输入管8与冷媒混合管的合并连接。当然,上述实施方式仅是本发明的优选示例,在实际的管路连接方案中,设计人员可以选用任意一种能够实现第一冷媒输入管5和第二冷媒输入管8与冷媒混合管合并连通的方案,如第一冷媒输入管5和第二冷媒输入管8的冷媒输出端一体设置、第一冷媒输入管5和第二冷媒输入管8共同使用一个冷媒输出口。
在此情形下,优选地,第一冷媒输出管6上设置有第三阀件(图中未示出),第三阀件设置为能够调节第一冷媒输出管6中的冷媒流量。第二冷媒输出管9上设置有第四阀件,第四阀件设置为能够调节第二冷媒输出管9中的冷媒流量。通过上述设置,使得换热器内部的冷媒在流经第一冷媒输出管6和第二冷媒输出管9时能够分别以设定的流量流入第一换热盘管101和第二换热盘管201,避免第一换热盘管101所属的冷媒循环机组或者第二换热盘管201所属的冷媒循环机组的冷媒在循环过程中明显减少的情况,便于两个冷媒循环机组的冷媒流动管路内的压力维稳。
作为一种可替代的实施方式,换热器包括第一换热管和第二换热管,第一换热管的冷媒输入端与第一冷媒输入管5相连,第一换热管的冷媒输出端与第一冷媒输出管6相连,以便使第一换热管内的高温冷媒能够流经第一换热管。第二换热管的冷媒输入端与第二冷媒输入管8相连,第二换热管的冷媒输出端与第二冷媒输出管9相连,以便使第二换热管内的低温冷媒能够流经第二换热管。通过使高温冷媒和低温冷媒同时流经换热器的第一换热管和第二换热管,能够使第一换热管释放出的热量和第二换热管释放出的冷量综合成预期的热量/冷量,从而使得气流能够与散发出预期的热量/冷量的换热器进行热交换、变成设定温度的热气流或者冷气流。在该实施方式中,由于两个冷媒循环机组的冷媒始终独立循环流动、没有混合交汇的情形,因此两个冷媒循环机组内的冷媒既可以是同种冷媒也可以是不同种冷媒。
进一步地,第一换热管和第二换热管交错设置,以避免换热器发出的热量/冷量分布不均匀。其中,上述交错设置的具体方式不是限定的,其具体交错形式可以根据管路排布需求、具体换热需求等进行设定。例如,第一换热管和第二换热管可以彼此缠绕设置,或者, 第一换热管和第二换热管分别包括多层相连通且弯曲盘绕的面结构,第一换热管的面结构与第二换热管的面结构之间交叉设置。
在上述多个实施方式中,第一阀件7、第二阀件10、第三阀件和第四阀件中的任意一个或多个(两个及两个以上)为电子膨胀阀。通过调节电子膨胀阀的开度,能够调节相应阀件所在管道的冷媒流量。当然,上述阀件还可以是除电子膨胀阀以外其他能够调节冷媒流量的阀。上述四个阀件既可以是同一种类的流量调节阀,也可以包含多种流量调节阀。
继续参阅图2,图2示出了本发明的多联机空调***的第二实施方式的一种整体结构。在本发明的第二实施方式中,第一换热盘管101和第二换热盘管201共属于同一个冷媒循环机组,即包含第一换热盘管101的部分和包含第二换热盘管201的部分共同构成一个完整的冷媒循环机组、实现冷媒的闭合循环。每个室内机3均通过两条冷媒回路连通至该冷媒循环机组。多个室内机3通过该连接方式并联至该冷媒循环机组上。具体而言,图2中示出了第一换热盘管101、第二换热盘管201、第三压缩机12、多个室内机3以及冷媒流动管路,图中的所有箭头均表示冷媒的流动方向。以第一换热盘管101流出的是高温冷媒、第一换热盘管101为冷凝器202以及第二换热盘管201流出的是低温冷媒、第二换热盘管201为蒸发器102为例,第一换热盘管101、第二换热盘管201、第三压缩机12和节流装置(图中未示出)通过冷媒流动管路连通成一个闭合的冷媒循环回路。该冷媒循环回路的管路连通方式与常规空调器的冷媒循环回路的管路构建方式相同。第一冷媒输入管5的两端分别连通至换热器的冷媒输入端与第一换热盘管101的冷媒输出端,第二冷媒输出管9的两端分别连通至换热器的冷媒输出端与第一换热盘管101的冷媒输出端,以便使第一换热盘管101的冷媒输出管内的冷媒在流经换热器后能够再流入该冷媒输出管上。第一阀件7设置于第一冷媒输入管5上、位于换热器的冷媒输入端与第一换热盘管101的冷媒输出端之间,以便控制流入换热器内的高温冷媒的流量。第二冷媒输入管8的两端分别连通至换热器的冷媒输入端与第二换热盘管201的冷媒输出端,第二冷媒输出管9的两端分别连通至换热器的冷媒输出端与第二换热盘管201的冷媒输 入端,以便使第二换热盘管201的冷媒输出管内的冷媒在流经换热器后能够再流入该冷媒输出管上。第二阀件10设置于第二冷媒输入管8上、位于换热器的冷媒输入端与第二换热盘管201的冷媒输出端之间,以便控制流入换热器内的低温冷媒的流量。
进一步地,上述换热器既可以设置成允许高温冷媒和低温冷媒混流的结构,如设置冷媒混合管,又可以设置成允许高温冷媒和低温冷媒独立并行流动的结构,如设置第一换热管和第二换热管。其中,冷媒混合管或者第一换热管和第二换热管的具体管路连接方式已在前文描述,因此此处不再赘述。
在本发明的第一实施方式和第二实施方式中,第一换热盘管101和第二换热盘管201均能够输出温度恒定的冷媒。在实际实施时,温度恒定的标准具体可以为冷媒的温度的波动值上下均不超过设定差值。例如,当设定差值为1度、高温冷媒设定为50度、低温冷媒为20度时,高温冷媒的温度维持在49度至51度范围内的任意温度即可,低温冷媒的温度维持在19度至21度范围内的任意温度即可。其中,上述设定差值可以根据多联机空调***的预期运行稳定度等进行设定。
尽管本发明描述的多个实施方式都是结合每个室内机3均独立控制的情形来描述的,但是这仅是本发明的优选实施方式,不应对本发明的保护构成限制。在不偏离本发明的基本原理的前提下,本领域技术人员可以根据实际的控制需求对室内机3的整体管路设置方案进行调整,例如,在多个室内机3中的部分室内机3不需要独立运行控制时,该部分室内机3还可以以并联方式连通至同一第一冷媒输入管5和同一第二冷媒输入管8与同一第一冷媒输出管6和同一第二冷媒输出管9之间,以便该部分室内机3的换热器流经的冷媒的整体(混合)温度相同。或者,在该部分室内机3的数量较少时,该部分的室内机3也可以以串联方式连通至同一第一冷媒输入管5和同一第二冷媒输入管8与同一第一冷媒输出管6和同一第二冷媒输出管9之间。按照这种方式调整的技术方案没有偏离本发明的基本原理,因此将落入本发明的保护范围之内。
综上所述,本发明的多联机空调***的每个室内机3的换热器均允许第一换热盘管101内的高温冷媒和第二换热盘管201内的低温冷媒同时流入。在此情形下,通过控制第一换热盘管101和第二换热盘管201的冷媒流量比例,可使各室内机3的换热器散发出不同的预期热量或冷量,从而使不同换热器具备不同的换热能力、实现任意一个室内机3的工作模式的自由选择,使得本发明的多联机空调***具备多种工作模式(制冷/制热/部分制冷、部分制热),在不增添多个复杂的冷媒切换管路的情形下提升了多联机空调***的整体运行情况的多样性。
至此,已经结合附图所示的优选实施方式描述了本发明的技术方案,但是,本领域技术人员容易理解的是,本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下,本领域技术人员可以对相关技术特征作出等同的更改或替换,这些更改或替换之后的技术方案都将落入本发明的保护范围之内。
Claims (10)
- 一种多联机空调***,其特征在于,所述多联机空调***包括第一换热盘管、第二换热盘管和多个室内机,所述第一换热盘管和所述第二换热盘管中流动着温度不同的冷媒,所述室内机包括换热器,所述换热器通过第一冷媒输入管和第一冷媒输出管与所述第一换热盘管相连,以使所述第一换热盘管中的冷媒能够通过所述第一冷媒输入管流入所述换热器中,并使所述换热器中的冷媒能够通过所述第一冷媒输出管流入所述第一换热盘管中,所述第一冷媒输入管上设置有第一阀件,所述第一阀件设置为能够调节所述第一冷媒输入管中的冷媒流量,所述换热器还通过第二冷媒输入管和第二冷媒输出管与所述第二换热盘管相连,以使所述第二换热盘管中的冷媒能够通过所述第二冷媒输入管流入所述换热器中,并使所述换热器中的冷媒能够通过所述第二冷媒输出管流入所述第二换热盘管中,所述第二冷媒输入管上设置有第二阀件,所述第二阀件设置为能够调节所述第二冷媒输入管中的冷媒流量。
- 根据权利要求1所述的多联机空调***,其特征在于,所述换热器包括冷媒混合管,所述第一冷媒输入管和所述第二冷媒输入管与所述冷媒混合管的输入端连通,所述第一冷媒输出管和所述第二冷媒输出管与所述冷媒混合管的输出端连通。
- 根据权利要求2所述的多联机空调***,其特征在于,所述第一冷媒输出管上设置有第三阀件,所述第三阀件设置为能够调节所述第一冷媒输出管中的冷媒流量,所述第二冷媒输出管上设置有第四阀件,所述第四阀件设置为能够调节所述第二冷媒输出管中的冷媒流量。
- 根据权利要求3所述的多联机空调***,其特征在于,所述第 三阀件和/或所述第四阀件为电子膨胀阀。
- 根据权利要求1所述的多联机空调***,其特征在于,所述换热器包括第一换热管和第二换热管,所述第一换热管的输入端与所述第一冷媒输入管相连,所述第一换热管的输出端与所述第一冷媒输出管相连,所述第二换热管的输入端与所述第二冷媒输入管相连,所述第二换热管的输出端与所述第二冷媒输出管相连。
- 根据权利要求4所述的多联机空调***,其特征在于,所述第一换热管和所述第二换热管交错设置。
- 根据权利要求1所述的多联机空调***,其特征在于,所述室内机还包括送风风机,所述送风风机设置在所述换热器附近。
- 根据权利要求1所述的多联机空调***,其特征在于,所述第一阀件和/或所述第二阀件为电子膨胀阀。
- 根据权利要求1至8中任一项所述的多联机空调***,其特征在于,所述第一换热盘管和所述第二换热盘管共属于同一个冷媒循环机组。
- 根据权利要求1至8中任一项所述的多联机空调***,其特征在于,所述第一换热盘管和所述第二换热盘管分别属于两个冷媒循环机组。
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