WO2018018767A1 - Climatiseur de refroidissement et de chauffage, et procédé de commande - Google Patents

Climatiseur de refroidissement et de chauffage, et procédé de commande Download PDF

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Publication number
WO2018018767A1
WO2018018767A1 PCT/CN2016/102941 CN2016102941W WO2018018767A1 WO 2018018767 A1 WO2018018767 A1 WO 2018018767A1 CN 2016102941 W CN2016102941 W CN 2016102941W WO 2018018767 A1 WO2018018767 A1 WO 2018018767A1
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WIPO (PCT)
Prior art keywords
valve port
port
cylinder
outdoor
exhaust
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PCT/CN2016/102941
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English (en)
Chinese (zh)
Inventor
戚文端
李金波
张建华
操瑞兵
刘燕飞
陈明瑜
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
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Priority claimed from CN201610866892.2A external-priority patent/CN106440132A/zh
Application filed by 广东美的制冷设备有限公司, 美的集团股份有限公司 filed Critical 广东美的制冷设备有限公司
Publication of WO2018018767A1 publication Critical patent/WO2018018767A1/fr

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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
    • 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
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • F25B1/10—Compression machines, plants or systems with non-reversible cycle with multi-stage compression

Definitions

  • the invention relates to the technical field of air conditioners, in particular to a cold and warm air conditioner and a control method capable of improving the energy efficiency of an air conditioner.
  • the refrigerant that has been throttled by the throttling element directly enters the indoor heat exchanger for heat exchange, and a part of the gaseous refrigerant is mixed in the refrigerant after the throttling, and enters the indoor heat exchanger.
  • the gaseous refrigerant not only affects the heat exchange effect of the indoor heat exchanger, but also causes the compression power consumption of the compressor to increase, and the energy efficiency ratio of the compressor is lowered, thereby affecting the energy efficiency level of the air conditioner.
  • the present invention aims to solve at least one of the technical problems in the related art to some extent.
  • the present invention proposes a cold and warm type air conditioner, which not only can improve the heat exchange effect of the indoor heat exchanger component, but also can improve the energy efficiency ratio of the two-cylinder compressor, reduce the power consumption of the two-cylinder compressor, and optimize the air-conditioning type air conditioner.
  • the energy efficiency level of the device is good.
  • the invention also proposes a control method for a cold and warm air conditioner.
  • a cooling and heating type air conditioner includes: a two-cylinder compressor including a casing, a first cylinder, and a second cylinder, wherein the casing is provided with an exhaust port, and the first suction a first air cylinder and a second air intake port, wherein the first cylinder and the second cylinder are respectively disposed in the casing, and an air intake passage of the first cylinder communicates with the first air inlet, the first The air intake passage of the two cylinders is in communication with the second air intake port, and the volume ratio of the first cylinder and the second cylinder ranges from 1 to 20; the reversing component, the reversing component includes a row a gas valve port, a first outdoor connection valve port, a second outdoor connection valve port, a first indoor connection valve port, a second indoor connection valve port, a first intake valve port and a second intake valve port, the exhaust valve a valve port is connected to the exhaust port, the first intake valve port is connected to the first intake port, the second intake valve
  • a cold and warm type air conditioner on the one hand, by providing a first cylinder and a second cylinder, and The first cylinder and the second cylinder are respectively connected to the first air inlet and the second air inlet, and the volume ratio of the first cylinder and the second cylinder is in a range of 1 to 20, thereby facilitating the improvement of the two-cylinder compressor
  • the energy efficiency ratio reduces the power consumption of the two-cylinder compressor;
  • the first indoor chamber is replaced by providing a gas-liquid separator and the indoor heat exchanger assembly including the first indoor heat exchange portion and the second indoor heat exchange portion
  • the hot portion is connected to the second interface of the gas-liquid separator, so that the second indoor heat exchange portion is connected to the third interface of the gas-liquid separator, so that when the cold and warm air conditioner is cooled, the gas state separated by the gas-liquid separator can be facilitated.
  • the reversing assembly includes two four-way valves, each of the four-way valves is provided with one of the exhaust valve ports, and one of the four-way valves is provided with the first indoor connection a valve port, the first outdoor connection valve port and the first intake valve port, and the other of the four-way valve is provided with the second indoor connection valve port, the second outdoor connection valve port, and the Second suction valve port.
  • the two four-way valves are linked when the cooling and heating type air conditioner is cooled or heated.
  • the reversing assembly is a seven-way valve.
  • the two-cylinder compressor further includes a first accumulator, the first accumulator is disposed outside the housing, and the first accumulator is respectively associated with the first suction
  • the gas port is connected to the first suction valve port.
  • the two-cylinder compressor further includes a second accumulator, the second accumulator being disposed outside the housing, the second accumulator being respectively associated with the second intake port and the The second suction valve port is connected.
  • the volume of the second reservoir is smaller than the volume of the first reservoir.
  • the first indoor heat exchange portion and the second indoor heat exchange portion are two independent heat exchangers, or the first indoor heat exchange portion and the second indoor heat exchange The hot part is the two parts of the same heat exchanger.
  • the flow rate of the throttle element is adjustable, and the flow rate of the throttle element whose flow rate is adjustable is adjusted according to the detection result of the first detection object during the cooling operation.
  • the flow rate is adjusted according to the detection result of the second detection object in the heating operation to the set flow rate according to the detection result of the second detection object;
  • the first detection object includes the outdoor environment temperature, the two-cylinder compression At least one of an operating frequency of the machine, an exhaust temperature of the exhaust port, and an exhaust pressure of the exhaust port;
  • the second detection object includes an outdoor ambient temperature, an operating frequency of the twin-cylinder compressor, and an exhaust of the exhaust port At least one of a temperature and an exhaust pressure of the exhaust port.
  • control method of the air-conditioning type air conditioner according to the embodiment of the present invention is advantageous for improving the energy efficiency of the air conditioner.
  • the first detection object and the second detection object are the same.
  • the flow rate of the throttle element is fixed, and the operating frequency of the two-cylinder compressor is adjusted according to the detected compressor operating parameter and/or the outdoor ambient temperature to satisfy a condition, wherein the compressor operating parameter comprises at least one of an operating current, an exhaust pressure, and an exhaust temperature.
  • control method of the air-conditioning type air conditioner according to the embodiment of the present invention is advantageous for improving the energy efficiency of the air conditioner.
  • FIG. 1 is a schematic view of a cold and warm air conditioner according to some embodiments of the present invention.
  • FIG. 2 is a schematic view of a cold and warm type air conditioner according to other embodiments of the present invention.
  • Air conditioner 100
  • a two-cylinder compressor 1 a two-cylinder compressor 1; a first cylinder 11; a second cylinder 12; an exhaust port 13; a first intake port 14; a second intake port 15;
  • Indoor heat exchanger assembly 3 first indoor heat exchange portion 31; second indoor heat exchange portion 32;
  • Throttle element 4
  • Reversing assembly 5 exhaust valve port 51; first outdoor connecting valve port 52; second outdoor connecting valve port 53; first indoor connecting valve port 54; second indoor connecting valve port 55; first inspirating valve port 56 a second suction valve port 57;
  • a gas-liquid separator 6 a first interface 61; a second interface 62; a third interface 63;
  • First sensor A second sensor B;
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. Or in one piece; it may be a mechanical connection, or it may be an electrical connection or a communication with each other; it may be directly connected or indirectly connected through an intermediate medium, and may be an internal connection of two elements or an interaction relationship between two elements. Unless otherwise expressly defined. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • a cooling and heating type air conditioner 100 which can be used for cooling or heating an indoor environment, will be described below with reference to Figs.
  • the air-conditioning type air conditioner 100 may include a two-cylinder compressor 1, a reversing unit 5, an outdoor heat exchanger 2, a gas-liquid separator 6, and an indoor heat exchanger assembly. 3. Specifically, the indoor heat exchanger assembly 3 is located within the casing of an indoor unit.
  • the two-cylinder compressor 1 includes a housing, a first cylinder 11 and a second cylinder 12.
  • the first cylinder 11 and the second cylinder 12 are respectively disposed in the casing.
  • the first cylinder 11 and the second cylinder 12 are respectively disposed in the casing, and the first cylinder 11 and the second cylinder 12 are spaced apart from each other in the up and down direction of the twin cylinder compressor 1.
  • the second cylinder 12 and the first cylinder 11 are respectively disposed in the housing, and the second cylinder 12 and the first cylinder 11 are spaced apart in the up and down direction of the twin cylinder compressor 1.
  • the housing is provided with an exhaust port 13, a first intake port 14 and a second intake port 15, and the intake passage of the first cylinder 11 communicates with the first intake port 14,
  • the intake passage of the second cylinder 12 communicates with the second intake port 15, whereby the heat exchanged refrigerant can be returned from the first intake port 14 and the second intake port 15 to the twin-cylinder compressor 1, respectively.
  • the refrigerant returning from the first intake port 14 can flow to the first cylinder 11, and the refrigerant returning from the second intake port 15 can flow to the second cylinder 12, and the refrigerant is in the first cylinder 11 and the second cylinder 12.
  • the compressors are independently compressed, and the compressed refrigerant can flow from the first cylinder 11 and the second cylinder 12 to the exhaust port 13 and simultaneously discharge the twin-cylinder compressor 1 from the exhaust port 13.
  • the volume ratio of the first cylinder 11 and the second cylinder 12 ranges from 1 to 20, that is, the ratio of the volume of the second cylinder 12 to the volume of the first cylinder 11 ranges from (1/20) to 1.
  • the inventors have found in actual research that when the volume ratio of the first cylinder 11 and the second cylinder 12 ranges from 1 to 20, the energy efficiency of the twin-cylinder compressor 1 is significantly improved compared with the prior art, thereby The energy efficiency ratio of the twin-cylinder compressor 1 is increased, the power consumption of the twin-cylinder compressor 1 is reduced, and the energy efficiency level of the air-conditioning type air conditioner 100 is optimized.
  • the reversing assembly 5 includes an exhaust valve port 51, a first outdoor connection valve port 52, a second outdoor connection valve port 53, a first indoor connection valve port 54, and a second indoor connection valve port. 55.
  • one of the first outdoor connection valve port 52 and the first indoor connection valve port 54 may be in reverse communication with the exhaust valve port 51, the first outdoor connection valve port 52 and the first The other of the indoor connection valve ports 54 may be in reverse communication with the first intake valve port 56; one of the second outdoor connection valve port 53 and the second indoor connection valve port 55 may be reversibly connected to the exhaust valve port 51.
  • the other of the second outdoor connection valve port 53 and the second indoor connection valve port 55 can be reversibly communicated with the second intake valve port 57.
  • the exhaust valve port 51 is respectively An outdoor connection valve port 52 and a second outdoor connection valve port 53 are in communication, and the first intake valve port 56 and the first chamber
  • the inner connecting valve port 54 is in communication
  • the second inhaling valve port 57 is in communication with the second indoor connecting valve port 55;
  • the exhaust valve port 51 is connected to the first indoor connecting port 54 and the first
  • the two indoor connection valve ports 55 are in communication
  • the first intake valve port 56 is in communication with the first outdoor connection valve port 52
  • the second intake valve port 57 is in communication with the second outdoor connection valve port 53.
  • one of the first outdoor connection valve port 52 and the second indoor connection valve port 55 is in reverse communication with the exhaust valve port 51, and the other of the first outdoor connection valve port 52 and the second indoor connection valve port 55
  • An intake valve port 56 is reversingly connected, and one of the second outdoor connection valve port 53 and the first indoor connection valve port 54 is in reverse communication with the exhaust valve port 51, and the second outdoor connection valve port 53 is connected to the first chamber.
  • the other of the valve ports 54 is in commutative communication with the second intake valve port 57.
  • the exhaust valve port 51 is connected to the exhaust port 13
  • the first intake valve port 56 is connected to the first intake port 14
  • the second intake valve port 57 is connected to the second intake port 15, whereby the structure Simple and reliable.
  • the first end of the outdoor heat exchanger 2 (for example, the left end shown in FIGS. 1-2) is connected to the first outdoor connection port 52 and the second outdoor connection port. 53 is connected, whereby when the cooling and heating type air conditioner 100 is cooled, the refrigerant can flow from the first outdoor connection port 52 and the second outdoor connection port 53 to the outdoor heat exchanger 2 simultaneously, when the heating and cooling type air conditioner 100 is heated
  • the refrigerant may flow from the outdoor heat exchanger 2 to the first outdoor connection valve port 52 and the second outdoor connection valve port 53, respectively.
  • the second end of the outdoor heat exchanger 2 (eg, the right end shown in Figures 1-2) is connected to the first end of the throttling element 4 (e.g., the left end shown in Figures 1-2), throttling Element 4 is capable of throttling and depressurizing the refrigerant flowing therethrough.
  • the gas-liquid separator 6 includes a first interface 61 to a third interface 63, wherein the first interface 61 and the second end of the throttle element 4 (eg, shown in FIGS. 1-2) The right end is connected, and the refrigerant can separate the gaseous refrigerant and the liquid refrigerant in the gas-liquid separator 6.
  • the gaseous refrigerant may flow out from the second interface 62, and the liquid refrigerant may flow out from the third interface 63.
  • the gaseous refrigerant may flow out from the third interface 63, and the liquid refrigerant flows out from the second interface 62.
  • the specific interface from which the gaseous refrigerant and the liquid refrigerant flow is related to the specific structure of the gas-liquid separator 6.
  • the structure and working principle of the gas-liquid separator 6 are well known to those skilled in the art, and are not detailed here. Description.
  • the indoor heat exchanger assembly 3 includes a first indoor heat exchange portion 31 and a second indoor heat exchange portion 32, and the two ends of the first indoor heat exchange portion 31 are respectively connected to the first indoor connection valve port 54 and the second portion of the gas-liquid separator 6
  • the interfaces 62 are connected, and both ends of the second indoor heat exchange portion 32 are connected to the second indoor connection valve port 55 and the third port 63 of the gas-liquid separator 6, respectively.
  • the liquid refrigerant separated by the gas-liquid separator 6 can be connected from the second The port 62 flows out to the first indoor heat exchange portion 31 to exchange heat with the indoor environment, and the gaseous refrigerant can flow out from the third interface 63 and flow to the second indoor heat exchange portion 32 to exchange heat with the indoor environment.
  • the gaseous refrigerant and the liquid refrigerant separated by the gas-liquid separator 6 can be separately flowed to the indoor heat exchanger assembly 3 independently, and independently in the indoor heat exchanger assembly 3
  • the indoor environment performs heat exchange, thereby facilitating the heat exchange effect of the indoor heat exchanger assembly 3, and optimizing the energy efficiency level of the cold and warm air conditioner 100.
  • the flow rate of the throttle element 4 may or may not be adjustable.
  • the throttle element 4 is an electronic expansion valve, a capillary tube or a throttle valve. Thereby, the structure is simple.
  • the throttle element 4 is an electronic expansion valve, the flow rate of the throttle element 4 is adjustable, and when the throttle element 4 is a capillary or a throttle valve, the flow rate of the throttle element 4 is not adjustable.
  • the exhaust valve port 51 communicates with the first outdoor connection valve port 52 and the second outdoor connection valve port 53, respectively.
  • the intake valve port 56 communicates with the first indoor connection valve port 54
  • the second intake valve port 57 communicates with the second indoor connection valve port 55
  • the refrigerant discharged from the exhaust port 13 of the twin-cylinder compressor 1 can be exhausted.
  • the valve port 51 flows to the first outdoor connection valve port 52 and the second outdoor connection valve port 53, respectively, and then the two refrigerants flow from the first outdoor connection valve port 52 and the second outdoor connection valve port 53 to the outdoor heat exchanger 2, respectively.
  • the refrigerant exchanges heat with the outdoor environment in the outdoor heat exchanger 2, and then the refrigerant flows out of the outdoor heat exchanger 2, flows to the throttling element 4, is throttled and depressurized by the throttling element 4, and then flows to the gas-liquid separator 6,
  • the refrigerant dissociates the gaseous refrigerant and the liquid refrigerant in the gas-liquid separator 6, the liquid refrigerant flows out from the second port 62, the gaseous refrigerant flows out from the third port 63, and the refrigerant flowing out from the second port 62 flows out from the third port 63.
  • the refrigerant flows to the corresponding first indoor heat exchange portion 31 and the second indoor In the hot portion 32, and independently exchange heat with the indoor environment to cool the indoor environment, the two refrigerants after the heat exchange flow out from the corresponding first indoor heat exchange portion 31 and the second indoor heat exchange portion 32 respectively;
  • the refrigerant flowing out of the first indoor heat exchange portion 31 passes through the first indoor connection valve port 54 and the first intake valve port 56, flows through the first intake port 14 to the first cylinder 11, and flows out from the second indoor heat exchange portion 32.
  • the refrigerant passes through the second indoor connecting valve port 55 and the second suction valve port 57, and flows to the second cylinder 12 through the second suction port 15; the two refrigerants are respectively in the corresponding first cylinder 11 and second cylinder 12
  • the refrigerant is independently compressed to form a high temperature and high pressure refrigerant, and the compressed two refrigerants can flow from the first cylinder 11 and the second cylinder 12 to the exhaust port 13 respectively, and simultaneously discharge the twin cylinder compressor 1 from the exhaust port 13, thereby forming The refrigeration cycle of the air-conditioning unit 100.
  • the exhaust valve port 51 communicates with the first indoor connection valve port 54 and the second indoor connection valve port 55, respectively, the first intake valve The port 56 communicates with the first outdoor connection valve port 52, the second intake valve port 57 communicates with the second outdoor connection valve port 53, and the refrigerant discharged from the exhaust port 13 of the twin-cylinder compressor 1 can pass through the exhaust valve port 51.
  • the two refrigerants flow from the first indoor connection valve port 54 and the second indoor connection valve port 55 to the corresponding first indoor heat exchange portion 31 and the first
  • the two indoor heat exchange portions 32, the two refrigerants respectively exchange heat with the indoor environment in the corresponding first indoor heat exchange portion 31 and the second indoor heat exchange portion 32 to heat the interior, and then the two refrigerants from the first indoor Heat exchange
  • the air-conditioning type air conditioner 100 on the one hand, by providing the first cylinder 11 and the second cylinder 12, and the first cylinder 11 and the second cylinder 12, respectively, with the first intake port 14 and the second intake port The port 15 is connected, and the volume ratio of the first cylinder 11 and the second cylinder 12 is in the range of 1 to 20, thereby facilitating the improvement of the energy efficiency ratio of the twin-cylinder compressor 1 and reducing the power consumption of the twin-cylinder compressor 1;
  • the gas-liquid separator 6, and the indoor heat exchanger assembly 3 includes the first indoor heat exchange portion 31 and the second indoor heat exchange portion 32, the first indoor heat exchange portion 31 and the gas-liquid separator 6 are provided.
  • the second interface 62 is connected to connect the second indoor heat exchange portion 63 with the third interface 63 of the gas-liquid separator 6, so that when the cold and warm air conditioner 100 is cooled, the gaseous refrigerant separated by the gas-liquid separator 6 can be facilitated. And the liquid refrigerant flows independently to the indoor heat exchanger component 3, and independently exchanges heat with the indoor environment in the indoor heat exchanger component 3, thereby facilitating the heat exchange effect of the indoor heat exchanger component 3, optimizing the cooling and heating type.
  • the energy efficiency level of the air conditioner 100 is good.
  • the reversing assembly 5 includes two four-way valves, each of which is provided with an exhaust valve port 51, and one of the four-way valves is provided with a first indoor connection.
  • the valve port 54, the first outdoor connection valve port 52 and the first intake valve port 56, and the other four-way valve is provided with a second indoor connection valve port 55, a second outdoor connection valve port 53 and a second intake valve port 57. .
  • the refrigerant discharged from the exhaust port 13 can flow to the two exhaust valve ports 51, respectively, and the structure is simple and reliable.
  • the present invention is not limited thereto.
  • the reversing assembly 5 is a seven-way valve, the structure is simple and reliable, and the arrangement of the seven-way valve is advantageous for reducing the cost.
  • the two four-way valves are interlocked when the refrigerating and heating type air conditioner 100 is cooled or heated, thereby facilitating the simultaneous reversing function of the two four-way valves, so as to facilitate
  • the cold-air type air conditioner 100 is cooled
  • one of the four-way valve exhaust valve ports 51 communicates with the first outdoor connection valve port 52 and the first intake valve port 56 communicates with the first indoor connection valve port 54
  • the other four-way The exhaust valve port 51 of the valve is in communication with the second outdoor connection valve port 53 and the second intake valve port 57 is in communication with the second indoor connection valve port 55.
  • the exhaust valve port 51 of one of the four-way valves communicates with the first indoor connection valve port 54 and the first intake valve port 56 communicates with the first outdoor connection valve port 52, and the exhaust valve port 51 of the other four-way valve
  • the second indoor connection valve port 55 is in communication, and the second intake valve port 57 is in communication with the second outdoor connection valve port 53.
  • the two-cylinder compressor 1 further includes a first accumulator 16 disposed outside the housing, the first accumulator 16 being respectively associated with the first intake port 14 and the first An intake valve port 56 is connected, thereby facilitating gas-liquid separation of the refrigerant flowing out of the first intake valve port 56, so that the gaseous refrigerant flows to the first cylinder 11 through the first intake port 14 and the liquid refrigerant is stored.
  • first reservoir 16 liquid flooding of the first cylinder 11 by the liquid refrigerant is thereby avoided.
  • the two-cylinder compressor 1 further includes a second accumulator 17, the second accumulator 17 is disposed outside the casing, and the second accumulator 17 is respectively connected to the second suction port 15 and the second suction port 57. Connected, thereby facilitating gas-liquid separation of the refrigerant flowing out of the second intake valve port 57, so that the gaseous refrigerant flows to the second cylinder 12 through the second intake port 15 and the liquid refrigerant is stored in the second accumulator 17, thereby avoiding the liquid blow of the liquid refrigerant to the second cylinder 12, which in turn is advantageous for improving the reliability of the operation of the twin-cylinder compressor 1.
  • the volume of the second reservoir 17 may be greater than, equal to, or less than the volume of the first reservoir 16.
  • the volume of the second reservoir 17 is smaller than the volume of the first reservoir 16.
  • the second cylinder 12 is smaller than the volume of the first cylinder 11, by making the volume of the second accumulator 17 smaller than the volume of the first accumulator 16, it is guaranteed not only to flow back to the first cylinder 11 and the first
  • the amount of refrigerant in the two cylinders 12 is also advantageous in reducing costs.
  • the first indoor heat exchange portion 31 and the second indoor heat exchange portion 32 are two independent heat exchangers, thereby facilitating the heat exchange effect of the indoor heat exchanger assembly 3.
  • the present invention is not limited thereto.
  • the first indoor heat exchange portion 31 and the second indoor heat exchange portion 32 are two portions of the same heat exchanger, thereby being simple and reliable, and being advantageous in reducing cost. It can be understood that the first indoor heat exchange portion 31 and the second indoor heat exchange portion 32 are located in the casing of the same indoor unit.
  • the volume ratio of the first cylinder 11 and the second cylinder 12 be in the range of 1 to 10.
  • the air-conditioning type air conditioner 100 further includes a first sensor A located at the exhaust port 13 for detecting the temperature or pressure of the refrigerant at the exhaust port 13.
  • the first sensor A is a pressure sensor or a temperature sensor.
  • the air-conditioning type air conditioner 100 further includes a second sensor B located on the first indoor heat exchange portion 31 or on the second indoor heat exchange portion 32 for detecting the temperature or pressure of the corresponding refrigerant.
  • the second sensor B is a pressure sensor or a temperature sensor.
  • the air-conditioning type air conditioner 100 of the present embodiment includes a two-cylinder compressor 1, a reversing unit 5, and an outdoor unit. Heat exchanger 2, gas-liquid separator 6 and indoor heat exchanger assembly 3. As shown in Figure 2, the reversing assembly 5 is a seven-way valve.
  • the two-cylinder compressor 1 includes a housing, a first cylinder 11 and a second cylinder 12.
  • the first cylinder 11 and the second cylinder 12 are respectively disposed in the casing.
  • the housing is provided with an exhaust port 13, a first intake port 14 and a second intake port 15, and the intake passage of the first cylinder 11 communicates with the first intake port 14, the second cylinder
  • the intake passage of 12 is in communication with the second intake port 15, whereby the heat exchanged refrigerant can be returned from the first intake port 14 and the second intake port 15 to the twin-cylinder compressor 1, respectively.
  • the reversing assembly 5 includes an exhaust valve port 51, a first outdoor connecting valve port 52, a second outdoor connecting valve port 53, a first indoor connecting valve port 54, a second indoor connecting valve port 55, and a An intake valve port 56 and a second intake valve port 57.
  • the exhaust valve port 51 is connected to the exhaust port 13
  • the first intake valve port 56 is connected to the first intake port 14
  • the second intake valve port 57 is connected to the second intake port 15, thereby simplifying the structure. .
  • the first end of the outdoor heat exchanger 2 is connected to the first outdoor connection valve port 52 and the second outdoor connection valve port 53, whereby when the cold and warm air conditioner 100 is cooled, the refrigerant can be
  • the first outdoor connection valve port 52 and the second outdoor connection valve port 53 simultaneously flow to the outdoor heat exchanger 2, and when the cold and warm air conditioner 100 is heated, the refrigerant can flow from the outdoor heat exchanger 2 to the first outdoor connection valve port respectively.
  • 52 and a second outdoor connection valve port 53 The second end of the outdoor heat exchanger 2 is connected to the first end of the throttle element 4 of which the flow rate is adjustable, and the throttle element 4 can throttle the pressure of the refrigerant flowing therethrough.
  • the gas-liquid separator 6 includes a first interface 61 to a third interface 63, wherein the first interface 61 is connected to the second end of the throttle element 4, and the refrigerant can realize a gaseous refrigerant in the gas-liquid separator 6. Separation from liquid refrigerant.
  • the indoor heat exchanger assembly 3 includes a first indoor heat exchange portion 31 and a second indoor heat exchange portion 32, and the two ends of the first indoor heat exchange portion 31 are respectively connected to the first indoor connection valve port 54 and the second portion of the gas-liquid separator 6
  • the interfaces 62 are connected, and both ends of the second indoor heat exchange portion 32 are connected to the second indoor connection valve port 55 and the third port 63 of the gas-liquid separator 6, respectively.
  • the throttle element 4 is an electronic expansion valve.
  • the first indoor heat exchange portion 31 and the second indoor heat exchange portion 32 are two independent heat exchangers.
  • the two indoor heat exchange sections are located in the casing of the same indoor unit.
  • the inventors conducted a plurality of experiments using an air conditioner to verify the relationship between the volume ratio of the first cylinder 11 and the second cylinder 12 and the energy efficiency increase ratio of the twin cylinder compressor 1.
  • the volume ratio of the first cylinder 11 and the second cylinder 12 ranges from 1 to 10.
  • the flow rate of the throttling element of the air-conditioning type air conditioner is adjustable, and of course, the flow rate of the throttle element may not be adjustable.
  • the flow rate of the throttle element with adjustable flow rate is adjusted to the set flow rate according to the detection result of the first detection object during the cooling operation; during the heating operation Adjusting the flow rate of the throttle element with adjustable flow rate to the set flow rate according to the detection result of the second detection object;
  • the first detection object includes an outdoor ambient temperature, an operating frequency of the two-cylinder compressor, and a row of the exhaust port At least one of a gas temperature and an exhaust pressure of the exhaust port.
  • the second detection object includes at least one of an outdoor ambient temperature, an operating frequency of the two-cylinder compressor, an exhaust temperature of the exhaust port, and an exhaust pressure of the exhaust port.
  • the air-conditioning type air conditioner includes a controller, and the controller can adjust the flow rate of the throttle element with adjustable flow rate to the set flow rate according to the detection result of the first detection object or the detection result of the second detection object.
  • first detection object and the second detection object may be the same, and may of course be different. It should be noted that the same as the first detection object and the second detection object means that the parameters required for adjusting the throttling element are the same during the cooling and heating operation, and the first detection object and the second detection object are different. It means that the parameters required to adjust the throttling element are different during cooling and heating operations.
  • the first detection object and the second detection object are outdoor ambient temperature T4, and during the heating and heating operation, the outdoor ambient temperature respectively presets a plurality of outdoor temperature intervals, and each outdoor temperature interval Corresponding to the flow rate of the different throttling elements, the flow rate of the throttling element is adjusted according to the flow rate value of the throttling element corresponding to the outdoor temperature range in which the actually detected outdoor ambient temperature value is located.
  • T4 Flow rate 10 ⁇ T4 ⁇ 20 100 20 ⁇ T4 ⁇ 30 110 30 ⁇ T4 ⁇ 40 120 40 ⁇ T4 ⁇ 50 150 50 ⁇ T4 ⁇ 60 180
  • the first detection object and the second detection object are an outdoor ambient temperature T4 and an operating frequency F.
  • the set flow rate of the throttling element is calculated according to the outdoor ambient temperature and the operating frequency, and then according to the set flow rate. Adjust the flow rate of the throttling element.
  • the flow rate of the throttle element is increased to calculate the flow rate; Wherein 0 ⁇ a 1 ⁇ 20,0 ⁇ b 1 ⁇ 20, -50 ⁇ c 1 ⁇ 100.
  • the control coefficients a, b, and c can both be 0. When any one of the coefficients is zero, it is proved that the parameter corresponding to the coefficient has no influence on the flow rate of the throttle element.
  • the cooling and heating type air conditioner calculates the flow rate of the throttle element to be 120 according to the collected frequency and the T4 value, and adjusts the flow rate of the throttle element to 120.
  • LA_heat_1 x 1 ⁇ F+y 1 T 4 +z 1
  • the control coefficients x, y, and z may each be 0.
  • the compressor operating frequency is 72 Hz
  • the first detection object and the second detection object are an outdoor ambient temperature T4, an operation frequency F, and an exhaust pressure; or the first detection object and the second detection object are an outdoor ambient temperature T4, and the operation Frequency F and exhaust temperature, first calculate the set exhaust pressure or set the exhaust temperature according to the outdoor ambient temperature T4 and the operating frequency F, and then adjust the flow rate of the throttle element according to the actually detected exhaust pressure or exhaust temperature.
  • the degree is such that the detected exhaust pressure or exhaust temperature reaches a set exhaust pressure or sets an exhaust temperature.
  • the first detection object is an outdoor ambient temperature T4
  • the second detection object is an outdoor ambient temperature T4, an operating frequency F and an exhaust pressure
  • the second detection object is an outdoor ambient temperature T4, an operating frequency. F and exhaust temperature.
  • the outdoor ambient temperature is preset to a plurality of outdoor temperature intervals, and each outdoor temperature interval corresponds to the flow rate of different throttling elements, according to the room where the actual detected outdoor environmental temperature value is located.
  • the flow rate value of the throttle element corresponding to the outer temperature interval adjusts the flow rate of the throttle element.
  • the set exhaust pressure or the exhaust temperature is calculated according to the outdoor ambient temperature T4 and the operating frequency F, and then the flow rate of the throttle element is adjusted according to the actually detected exhaust pressure or exhaust temperature. So that the detected exhaust pressure or exhaust temperature reaches the set exhaust pressure or sets the exhaust temperature. Thus, it is simple and reliable.
  • the first detection object or the second detection object may be re-detected after n seconds of operation, and then the flow rate of the throttle element is adjusted according to the detection result, and thus repeated.
  • the repetition condition is not limited thereto.
  • the first detection object or the second detection object may be re-detected, and then the flow rate of the throttle element is adjusted according to the detection result.
  • the operating frequency of the two-cylinder compressor is adjusted according to the detected compressor operating parameter and/or the outdoor ambient temperature to meet the condition, wherein the compressor operating parameters include the operating current, the exhaust pressure, and the exhaust At least one of the gas temperatures; in other words, the operating frequency of the two-cylinder compressor is adjusted according to the detection result of the detection object, wherein the detection object includes the outdoor ambient temperature, the exhaust temperature of the exhaust port, the exhaust pressure of the exhaust port, and the double At least one of the operating currents of the cylinder compressor.
  • the fixed flow rate of the throttling element means that the flow rate of the throttling element is not adjustable.
  • the compressor operating parameters and/or the outdoor ambient temperature may be re-detected after n seconds of operation, and then the operating frequency of the compressor is adjusted according to the re-detected detection result, thus repeating .
  • the repetition condition is not limited thereto.
  • the compressor operation parameter and/or the outdoor environment temperature may be re-detected, and then the operating frequency of the compressor may be adjusted according to the re-detected detection result.
  • the compressor operating parameters and/or the outdoor ambient temperature may be re-detected after n seconds of operation or after receiving the user's operating signal, and then according to the detection. As a result, the operating frequency is adjusted and repeated.
  • the compressor stops operating.
  • the system by adjusting the operating frequency of the compressor according to the detection result during the operation, the system can be operated within a suitable parameter range, and the reliability of the operation of the air conditioner can be improved.
  • a plurality of different exhaust gas temperature intervals are first preset, and the plurality of exhaust gas temperature ranges have different adjustment commands corresponding to the operating frequency, and then the exhaust gas temperature is detected and according to the detected exhaust gas temperature.
  • the adjustment command corresponding to the exhaust temperature range adjusts the operating frequency.
  • the adjustment command may include instructions of down-converting, up-converting, maintaining frequency, shutting down, and releasing the frequency limit. Therefore, by detecting the exhaust gas temperature and adjusting the operating frequency of the compressor, the operating state of the system can be directly reacted to ensure that the system operates within a suitable parameter range, thereby further improving the reliability of the operation of the air conditioner.
  • the release of the frequency limit means that the operating frequency of the compressor is not limited, and it is not necessary to adjust the operating frequency of the compressor.
  • the air conditioner is turned on and off, and the exhaust temperature TP is detected during operation.
  • a corresponding adjustment command is executed, and after the adjustment is completed, the TP is detected again. If the adjustment is satisfied, the determination is ended.
  • the exhaust gas temperature TP is detected again, and the determination is repeated. While running for n seconds, if the user shutdown command is detected or the set temperature is reached, the operation ends.
  • a plurality of outdoor temperature intervals, a heating shutdown protection current, and a cooling shutdown protection current are preset, and the plurality of outdoor temperature intervals correspond to different frequency limiting protection currents.
  • the outdoor ambient temperature is detected, and then the corresponding frequency-limiting protection current is obtained according to the detected outdoor temperature range of the outdoor ambient temperature, and the operating frequency is adjusted so that the actually detected operating current reaches a corresponding frequency-limiting protection current, wherein when cooling
  • the running current detected during heating is greater than the heating shutdown protection current, it will stop directly.
  • the correspondence between the plurality of outdoor temperature intervals and the corresponding frequency limiting protection current during cooling can be as follows: when T4>50.5° C., the frequency limiting protection current is CL5; when 49.5° C ⁇ T4>45.5° C., the limit is The frequency protection current is CL4; when 44.5°C ⁇ T4>41°C, the frequency limiting protection current is CL3; when 40°C ⁇ T4>33°C, the frequency limiting protection current is CL2; when 32 ⁇ T4°C, the frequency limiting protection current is CL1.
  • the specific values of the CL5, CL4, CL3, CL2, and CL1 and the cooling shutdown protection current may be specifically limited according to actual conditions, and are not limited herein.
  • the outdoor ambient temperature T4 detected during the cooling operation is within the outdoor temperature range of 40 ° C ⁇ T4 > 33 ° C, it means that the operating current is not allowed to exceed the frequency limiting protection current CL2. If it is exceeded, the frequency will be reduced to lower than the operating current.
  • the frequency limiting protection current is CL2.
  • the corresponding relationship between multiple outdoor temperature intervals and the corresponding frequency limiting protection current during heating can be as follows: when T4>15°C, the frequency limiting protection current is HL5; when 14°C>T4 ⁇ 10°C, the frequency limiting protection The current is HL4; when 9°C>T4 ⁇ 6°C, the current limiting protection current is HL3; when 5°C>T4 ⁇ -19°C, the frequency limiting protection current is HL2; when -20°C>T4, the frequency limiting protection current is HL1.
  • the specific values of HL5, HL4, HL3, HL2, HL1 and the heating shutdown protection current can be specifically limited according to the actual situation, and are not limited herein.
  • the outdoor ambient temperature T4 detected during heating operation is located in the outdoor temperature range of 9 °C>T4 ⁇ 6 °C, it means that the operating current is not allowed to exceed the frequency limiting protection current HL3. If it exceeds, the frequency will be reduced to lower than the running current. Frequency limiting protection current HL3.
  • a plurality of outdoor temperature intervals may be preset, and the plurality of outdoor temperature intervals correspond to different set operating frequencies, and the set operating frequency corresponding to the outdoor temperature range in which the actually detected outdoor ambient temperature is located Adjust the operating frequency of the compressor.
  • a plurality of different exhaust pressure intervals are first preset, and the adjustment commands of the operating frequencies corresponding to the plurality of exhaust pressure intervals are different, and then the exhaust pressure is detected and according to the detected exhaust pressure.
  • Row The adjustment command corresponding to the gas pressure interval adjusts the operating frequency.
  • the adjustment command may include instructions of down-converting, up-converting, maintaining frequency, shutting down, and releasing the frequency limit. Therefore, by detecting the exhaust pressure to adjust the operating frequency of the compressor, the operating state of the system can be directly reacted to ensure that the system operates within a suitable parameter range, thereby further improving the reliability of the operation of the air conditioner.
  • control method of the air-conditioning type air conditioner according to the embodiment of the present invention is advantageous for improving the energy efficiency of the air-conditioning type air conditioner.

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

Abstract

L'invention porte également sur un climatiseur de refroidissement et de chauffage (100) et sur un procédé de commande. Le climatiseur de refroidissement et de chauffage (100) comprend : un compresseur à double cylindre (1); un ensemble d'inversion (5) comprenant un premier orifice de soupape de connexion extérieure (52), un second orifice de soupape de connexion extérieure (53), un premier orifice de soupape de connexion intérieure (54) et un second orifice de soupape de connexion intérieure (55); un échangeur de chaleur extérieur (2); un ensemble échangeur de chaleur intérieur (3), où l'échangeur de chaleur intérieur (3) possède une première partie d'échange de chaleur intérieure (31) ayant deux extrémités respectivement reliées au premier orifice de soupape de connexion intérieure (54) et un second orifice (62) d'un séparateur gaz-liquide (6), et une seconde partie d'échange de chaleur intérieure (32) ayant deux extrémités respectivement reliées au second orifice de soupape de connexion intérieure (55) et un troisième orifice (63) du séparateur gaz-liquide (6).
PCT/CN2016/102941 2016-07-29 2016-10-21 Climatiseur de refroidissement et de chauffage, et procédé de commande WO2018018767A1 (fr)

Applications Claiming Priority (12)

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CN201610626382.8 2016-07-29
CN201610626382 2016-07-29
CN201610617593 2016-07-29
CN201620828292 2016-07-29
CN201620819431.5 2016-07-29
CN201620828292.2 2016-07-29
CN201610617593.5 2016-07-29
CN201620819431 2016-07-29
CN201610866892.2A CN106440132A (zh) 2016-07-29 2016-09-29 冷暖型空调器及控制方法
CN201621099076.5 2016-09-29
CN201610866892.2 2016-09-29
CN201621099076.5U CN206160544U (zh) 2016-07-29 2016-09-29 冷暖型空调器

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CN111486534A (zh) * 2020-05-19 2020-08-04 福州融翔电气技术有限公司 低功耗恒温恒湿机及其工作方法
CN114353262A (zh) * 2021-12-21 2022-04-15 青岛海尔空调电子有限公司 用于空调压缩机液击故障的控制方法及装置、空调
CN115264675A (zh) * 2022-04-29 2022-11-01 佛山市顺德区美的电子科技有限公司 一种空调器及其控制方法
WO2024140367A1 (fr) * 2022-12-30 2024-07-04 广东美的白色家电技术创新中心有限公司 Climatiseur et procédé de fonctionnement de climatiseur

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CN105115181A (zh) * 2015-07-21 2015-12-02 上海日立电器有限公司 一种空调系统
CN105758036A (zh) * 2016-04-29 2016-07-13 广东美的制冷设备有限公司 单冷型空调器及其控制方法
CN105758037A (zh) * 2016-04-29 2016-07-13 广东美的制冷设备有限公司 冷暖型空调器及其控制方法

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GB2209193B (en) * 1987-08-31 1991-10-23 Toshiba Kk Rotary compressor
US5878810A (en) * 1990-11-28 1999-03-09 Kabushiki Kaisha Toshiba Air-conditioning apparatus
CN1483970A (zh) * 2002-06-12 2004-03-24 Lg电子株式会社 多单元空调器及其控制方法
CN1924359A (zh) * 2005-08-30 2007-03-07 上海日立电器有限公司 单、双缸容量控制式压缩机
JP4815286B2 (ja) * 2006-07-10 2011-11-16 東芝キヤリア株式会社 ２元冷凍サイクル装置
CN101995110A (zh) * 2010-10-29 2011-03-30 广东美的电器股份有限公司 一种双缸变容压缩机空调系统及其控制方法
CN105115181A (zh) * 2015-07-21 2015-12-02 上海日立电器有限公司 一种空调系统
CN105758036A (zh) * 2016-04-29 2016-07-13 广东美的制冷设备有限公司 单冷型空调器及其控制方法
CN105758037A (zh) * 2016-04-29 2016-07-13 广东美的制冷设备有限公司 冷暖型空调器及其控制方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111486534A (zh) * 2020-05-19 2020-08-04 福州融翔电气技术有限公司 低功耗恒温恒湿机及其工作方法
CN114353262A (zh) * 2021-12-21 2022-04-15 青岛海尔空调电子有限公司 用于空调压缩机液击故障的控制方法及装置、空调
CN114353262B (zh) * 2021-12-21 2023-08-15 青岛海尔空调电子有限公司 用于空调压缩机液击故障的控制方法及装置、空调
CN115264675A (zh) * 2022-04-29 2022-11-01 佛山市顺德区美的电子科技有限公司 一种空调器及其控制方法
CN115264675B (zh) * 2022-04-29 2023-11-10 佛山市顺德区美的电子科技有限公司 一种空调器及其控制方法
WO2024140367A1 (fr) * 2022-12-30 2024-07-04 广东美的白色家电技术创新中心有限公司 Climatiseur et procédé de fonctionnement de climatiseur

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