WO2018018766A1 - Climatiseur froid-chaud et procédé de commande - Google Patents

Climatiseur froid-chaud et procédé de commande Download PDF

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Publication number
WO2018018766A1
WO2018018766A1 PCT/CN2016/102940 CN2016102940W WO2018018766A1 WO 2018018766 A1 WO2018018766 A1 WO 2018018766A1 CN 2016102940 W CN2016102940 W CN 2016102940W WO 2018018766 A1 WO2018018766 A1 WO 2018018766A1
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WIPO (PCT)
Prior art keywords
port
valve port
cylinder
outdoor
air conditioner
Prior art date
Application number
PCT/CN2016/102940
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English (en)
Chinese (zh)
Inventor
刘燕飞
李金波
戚文端
张建华
陈明瑜
操瑞兵
Original Assignee
广东美的制冷设备有限公司
美的集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201610625770.4A external-priority patent/CN106016799A/zh
Priority claimed from CN201621093570.0U external-priority patent/CN206160543U/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 WO2018018766A1 publication Critical patent/WO2018018766A1/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 after throttling 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 room for replacement.
  • the gaseous refrigerant in the heat exchanger 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 heat exchange portion and the outdoor heat exchanger are made by the indoor heat exchanger assembly including the first indoor heat exchange portion and the second indoor heat exchange portion
  • a throttling element is connected in series between one of the diverting ports and between the second indoor heat exchange portion and the other diverting port of the outdoor heat exchanger, so as to facilitate separate between the first indoor heat exchange portion and the outdoor heat exchanger And throttling and depressurizing the refrigerant between the second indoor heat exchange portion and the outdoor heat exchanger, which can reduce the amount of gaseous refrigerant in the refriger
  • 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 is disposed outside the housing, and the second accumulator is respectively associated with the second suction
  • the gas port is connected to the second suction valve port.
  • the volume of the second reservoir is less than the volume of the first reservoir.
  • the throttling element is an electronic expansion valve, a capillary or a throttle.
  • 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 volume ratio of the first cylinder and the second cylinder ranges from 1 to 10.
  • the flow rate of the at least one throttle element is adjustable, and the flow rate of the throttle element with adjustable flow rate is adjusted to a predetermined flow rate according to the detection result of the detection object, wherein
  • the 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.
  • 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 flow rates of the two throttle elements are fixed, and the operating frequency of the two-cylinder compressor is adjusted according to the detected compressor operating parameters 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;
  • Outdoor heat exchanger 2 summary port 21; branch ports 22a, 22b;
  • Indoor heat exchanger assembly 3 first indoor heat exchange portion 31; second indoor heat exchange portion 32;
  • 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;
  • 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 integrated; can be mechanical connections, electrical connections or communication with each other; can be directly connected or indirectly through intermediate media Connected, may be the internal communication of two elements or the interaction of two elements, unless explicitly defined otherwise.
  • 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 cooling and heating type air conditioner 100 may include a two-cylinder compressor 1, a reversing unit 5, an outdoor heat exchanger 2, and an indoor heat exchanger assembly 3. Specifically, the indoor heat exchanger assembly 3 is located in the casing of the same 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 ratio of the volume ratio of the first cylinder 11 and the second cylinder 12 is in the range of 1 to 20, that is, the ratio of the volume of the second cylinder 12 to the volume of the first cylinder 11 is in the range of (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 The first outdoor connecting valve port 52 and the second outdoor connecting valve port 53 are respectively connected, the first inhaling valve port 56 is in communication with the first indoor connecting valve port 54, and the second inhaling valve port 57 is connected to the second indoor connecting valve port.
  • the exhaust valve port 51 communicates with the first indoor connecting valve port 54 and the second indoor connecting valve port 55, respectively, the first inhaling valve port 56 and the first outdoor connecting valve
  • the port 52 is in communication
  • the second intake valve port 57 is in communication with the second outdoor connection valve port 53. It can be understood herein that the exhaust valve port 51, the first outdoor connection valve port 52, the first indoor connection valve port 54, the first intake valve port 56, the second outdoor connection valve port 53, and the second indoor are understood.
  • the manner of connecting the connecting port 55 and the second inhaling valve port 57 is only a schematic description according to the accompanying drawings, which is not a limitation of the present application. In other embodiments, other connecting modes may also be provided.
  • 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 outdoor heat exchanger 2 has a summary port 21 and two branch ports 22a, 22b.
  • one of the split ports 22a is located between the summary port 21 and the other split port 22b.
  • the summary port 21 is connected to the first outdoor connection valve port 52 and the second outdoor connection valve port 53, whereby when the cooling and heating type air conditioner 100 is cooled, the refrigerant can be connected from the first outdoor connection port 52 and the second outdoor connection port 53 flows to the outdoor heat exchanger 2 through the summary port 21 at the same time. When the cold and warm air conditioner 100 is heated, the refrigerant can flow from the summary port 21 of the outdoor heat exchanger 2 to the first outdoor connection port 52 and the second outdoor connection valve, respectively. Mouth 53.
  • the indoor heat exchanger assembly 3 includes a first indoor heat exchange portion 31 and a second indoor heat exchange portion 32, and two ends of the first indoor heat exchange portion 31 are respectively connected to the first indoor connection valve port 54 and one of the branch ports 22a. Both ends of the second indoor heat exchange portion 32 are respectively connected to the second indoor connection valve port 55 and the other branch flow port 22b, thereby forming a complete refrigerant flow path to facilitate the circulation of the refrigerant.
  • a throttle element 4a, 4b is connected in series between the first indoor heat exchange portion 31 and the outdoor heat exchanger 2, the second indoor heat exchange portion 32 and the outdoor heat exchanger 2, that is, heat exchange in the first chamber
  • a throttle element 4a is connected in series between the portion 31 and one of the above-described split ports 22a
  • a throttle element 4b is connected in series between the second indoor heat exchange portion 32 and the other split port 22b.
  • the two channels of refrigerant after throttling may flow to the first indoor heat exchange portion 31 and the second indoor heat exchange portion 32, respectively, and independently In the first room
  • the inner heat exchange portion 31 and the second indoor heat exchange portion 32 exchange heat with the indoor environment, 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 rates of the two throttle elements 4a, 4b are adjustable or the flow degrees of the two throttle elements 4a, 4b are not adjustable, or one of the two throttle elements 4a, 4b is throttled 4a
  • the flow rate of 4b is adjustable and the flow rate of the other throttle elements 4a, 4b is fixed.
  • a throttle element 4a having an adjustable flow rate is connected in series between the first indoor heat exchange portion 31 and one of the above-described split ports 22a, and is connected in series between the second indoor heat exchange portion 32 and the other split port 22b.
  • a throttle element 4a having a fixed flow rate is connected in series between the first indoor heat exchange portion 31 and one of the above-described split ports 22a, and the second indoor heat exchange portion 32 and the other split flow are A throttle element 4b of adjustable flow rate is connected in series between the ports 22b.
  • the throttle elements 4a, 4b with adjustable flow rates are electronic expansion valves, and the throttle elements 4a, 4b with fixed flow rates are capillary tubes or throttle valves.
  • the structure simple, but also responsive.
  • 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 respectively, and flow to the outdoor through the summary port 21
  • the heat exchanger 2 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 through the two branch ports 22a, 22b, and flows to the two throttling elements 4a, 4b, respectively.
  • the road refrigerant is throttled and depressurized by the corresponding throttling elements 4a, 4b, and then flows to the first indoor heat exchange portion 31 and the second indoor heat exchange portion 32, respectively, and the two refrigerants are in the corresponding first indoor heat exchange portion 31 and The indoor heat exchange portion 32 exchanges heat with the indoor environment to cool the indoor environment.
  • the gas valve port 56 flows through the first suction port 14 to the first cylinder 11, and the refrigerant flowing out of the second indoor heat exchange portion 32 passes through the second indoor connection valve port 55 and the second suction valve port 57, and passes through the first
  • the two intake ports 15 flow to the second cylinder 12; the two refrigerants are independently compressed in the corresponding first cylinder 11 and the second cylinder 12 to form high temperature and high pressure refrigerant respectively, and the compressed two refrigerants can be respectively from the first cylinder 11 and the second cylinder 12 flow to the exhaust port 13, and simultaneously discharge the twin-cylinder compressor 1 from the exhaust port 13, thereby forming a refrigeration cycle of the air-conditioning type air conditioner 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 is in communication with the first outdoor connection valve port 52, and the second intake valve port 57 is in communication with the second outdoor connection valve port 53 from the exhaust port 13 of the twin-cylinder compressor 1.
  • the refrigerant may flow through the exhaust valve port 51 to the first indoor connection valve port 54 and the second indoor connection valve port 55, and then the two refrigerants flow from the first indoor connection valve port 54 and the second indoor connection valve port 55 respectively.
  • the two refrigerants flow out from the first indoor heat exchange portion 31 and the second indoor heat exchange portion 32, respectively, through the corresponding throttling elements 4a, 4b, and are throttled down by the corresponding throttling elements 4a, 4b.
  • the two flow-dividing ports 22a and 22b corresponding to the outdoor heat exchanger 2 respectively flow to the outdoor converter 2, and the refrigerant exchanges heat with the outdoor environment in the outdoor heat exchanger 2, and the heat-exchanged refrigerant exchanges heat from the outside.
  • the summary port 21 of the device 2 flows out and flows to the first outdoor connection valve port 52 and the second outdoor connection valve port 53 respectively to flow into the reversing assembly 5; the refrigerant flowing to the first outdoor connection valve port 52, further passes through the first suction Valve port 56, and flows through the first intake port 14
  • the cylinder 11 and the refrigerant flowing to the second outdoor connection valve port 53 further pass through the second intake valve port 57 and flow to the second cylinder 12 through the second intake port 15;
  • the two refrigerants are respectively corresponding to the first cylinder 11 and the first
  • the two cylinders 12 are independently compressed to form a high-temperature and high-pressure refrigerant, respectively, and the compressed two-way refrigerant can flow from the first cylinder 11 and the second cylinder 12 to the exhaust port 13 respectively, and simultaneously discharge the two-cylinder compressor from the exhaust port 13. 1, thereby forming a heating cycle of the air-conditioning type air conditioner 100.
  • 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 indoor heat exchanger assembly 3 include the first indoor heat exchange portion 31 and the second indoor heat exchange portion 32, between the first indoor heat exchange portion 31 and one of the branch ports 22a of the outdoor heat exchanger 2 And a throttle element 4a, 4b is respectively connected in series between the second indoor heat exchange portion 32 and the other branch port 22b of the outdoor heat exchanger 2, so as to facilitate the first indoor heat exchange portion 31 and the outdoor heat exchanger 2, respectively.
  • the section The two channels of refrigerant after the flow can flow to the first indoor heat exchange portion 31 and the first The indoor heat exchange portion 32 and the first indoor heat exchange portion 31 and the second indoor heat exchange portion 32 independently exchange heat with the indoor environment, thereby facilitating the heat exchange effect of the indoor heat exchanger assembly 3, optimizing the heating and cooling.
  • the energy efficiency level of the air conditioner 100 is good, and the energy saving effect 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 setting of the seven-way valve is beneficial to reduce 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 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 other four-way valve exhaust valve port 51 and the second indoor connection valve port 55 is connected, 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.
  • the volume ratio of the first cylinder 11 and the second cylinder 12 ranges from 1 to 13.
  • the volume ratio of the first cylinder 11 and the second cylinder 12 be in the range of 1 to 10. Thereby, it is advantageous to further optimize the structure of the twin-cylinder compressor 1.
  • the air-conditioning type air conditioner 100 further includes a first sensor A, the first transmission
  • the sensor A is 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, an outdoor heat exchanger 2, and an indoor heat exchanger unit 3.
  • 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 outdoor heat exchanger 2 has a summary port 21 and two branch ports 22a, 22b.
  • the summary port 21 is connected to the first outdoor connection valve port 52 and the second outdoor connection valve port 53, whereby when the cooling and heating type air conditioner 100 is cooled, the refrigerant can be connected from the first outdoor connection port 52 and the second outdoor connection port 53 flows to the outdoor heat exchanger 2 through the summary port 21 at the same time.
  • the refrigerant can flow from the summary port 21 of the outdoor heat exchanger 2 to the first outdoor connection port 52 and the second outdoor connection valve, respectively. Mouth 53.
  • the indoor heat exchanger assembly 3 includes a first indoor heat exchange portion 31 and a second indoor heat exchange portion 32.
  • the two ends of the first indoor heat exchange portion 31 are respectively connected to the first indoor connection valve port 54 and one of the split ports 22a, 22b.
  • the two ends of the second indoor heat exchange portion 32 are respectively connected to the second indoor connection valve port 55 and the other branch port 22a, 22b, thereby forming a complete refrigerant flow path to facilitate the circulation of the refrigerant.
  • a throttle element 4a, 4b is connected in series between the first indoor heat exchange portion 31 and the outdoor heat exchanger 2, the second indoor heat exchange portion 32 and the outdoor heat exchanger 2, and the two throttle elements 4a, 4b
  • the flow rate of one of the throttle elements 4a, 4b is adjustable and the flow rate of the other throttle element 4a, 4b is fixed.
  • the throttle elements 4a and 4b whose flow rates are adjustable are electronic expansion valves, and the throttle elements 4a and 4b whose flow rates are fixed are capillary tubes.
  • 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 improvement ratio of the twin cylinder compressor 1, and one of them is explained. .
  • the energy efficiency of the whole machine is significantly improved compared with the prior art.
  • the volume ratio of the first cylinder 11 and the second cylinder 12 ranges from 1 to 10.
  • the flow rate of the two throttling elements of the air-conditioning type air conditioner is adjustable, and the flow rate of the throttling element may not be adjustable.
  • the flow rate of one of the two throttling elements is adjustable and the flow rate of the other throttling element is fixed. It can be understood here that the fixed flow rate of the throttle element means that the flow rate of the throttle element is not adjustable.
  • the flow rate of the throttling element with adjustable flow rate is adjusted to a predetermined flow rate according to the detection result of the detection object, wherein the detection object includes the outdoor ambient temperature, the twin-cylinder compressor At least one of a running frequency, 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 detection object.
  • the flow rate of one of the two throttling elements is adjustable, the flow rate of the throttling element whose flow rate is adjustable is adjusted according to the detection result of the detection object to the set flow rate;
  • the detection objects corresponding to the two throttling elements may be the same or different.
  • the flow rate of the two throttling elements can be adjusted to the set flow rate according to the detection results of the first detection object and the second detection object.
  • the first detection object and the second detection object each include 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 same as the first detection object and the second detection object means that the parameters required for adjusting the two throttling elements are the same, and the first detection object and the second detection object are not used to adjust two. The parameters required for the throttling elements are different.
  • the detection object of the throttling element may be the same or different when cooling and heating, for example, the detection object during cooling is outdoor.
  • the ambient temperature and the object of detection during heating are the exhaust gas temperature.
  • the detection objects of each throttling element may be the same or different under two different operating conditions of cooling and heating.
  • cooling The detection object of one of the throttling elements is the outdoor ambient temperature
  • the detection object of the other throttling element is the operating frequency of the compressor.
  • heating the detection object of one of the throttling elements is the exhaust pressure
  • the other The detection object of a throttling element is the outdoor ambient temperature.
  • the parameters required for the throttling element with adjustable flow rate are collected, and then the flow rate of the throttle element with adjustable flow rate is adjusted according to the obtained parameters until the flow rate is set.
  • the steps of collecting and processing the parameters required to control the two throttling elements can be performed simultaneously or sequentially.
  • the detection objects corresponding to the two throttling elements are both outdoor ambient temperature T4; or
  • the corresponding detection object of the throttling element is the outdoor ambient temperature.
  • the outdoor ambient temperature is preset to a plurality of outdoor temperature intervals, and each outdoor temperature interval corresponds to a flow rate of different throttling elements, corresponding to an outdoor temperature interval in which the actually detected outdoor environmental temperature value is located.
  • the flow rate value of the throttling element adjusts the flow rate of the throttling element whose flow rate is adjustable.
  • the flow rate of the two throttling elements 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 present;
  • the flow rate of the one throttling element in the throttling element is adjustable, 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 environmental temperature value is located degree
  • T4 Flow rate 10 ⁇ T4 ⁇ 20 100 20 ⁇ T4 ⁇ 30 110 30 ⁇ T4 ⁇ 40 120 40 ⁇ T4 ⁇ 50 150 50 ⁇ T4 ⁇ 60 180
  • T4 Flow rate 10 ⁇ T4 ⁇ 20 160 5 ⁇ T4 ⁇ 10 180 -5 ⁇ T4 ⁇ 5 200 -10 ⁇ T4 ⁇ -5 250 -15 ⁇ T4 ⁇ -10 300
  • the detection objects of the two throttling elements when the flow degrees of the two throttling elements are both adjustable, the detection objects of the two throttling elements, that is, the first detection object and the second detection object are the outdoor ambient temperature T4 and the operating frequency F;
  • the corresponding detection object of the throttling element is the outdoor ambient temperature T4 and the operating frequency F.
  • the set flow rate of the throttling element is first calculated according to the outdoor ambient temperature and the operating frequency, and then the flow rate of the throttling element is adjusted according to the set flow rate. That is to say, when the flow degrees of the two throttling elements are both adjustable, the set flow rate of the throttling element is first calculated according to the outdoor ambient temperature and the operating frequency, and then the two throttling elements are adjusted according to the set flow rate. Flow rate; when the flow rate of one of the two throttling elements is adjustable, the set flow rate of the throttling element is first calculated according to the outdoor ambient temperature and the operating frequency, and then the adjusted flow rate is adjusted according to the set flow rate. The flow rate of a throttling element.
  • the flow rate of the throttle element with adjustable flow rate 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 outdoor ambient temperature is detected to be 35 ° C
  • the compressor operating frequency is 58 Hz
  • the cooling and heating type air conditioner calculates that the flow rate of the throttling element should be 120, and adjusts the flow rate of the throttling element whose flow rate is adjustable to 120.
  • the compressor operating frequency is 72 Hz
  • the flow rates of the two throttling elements are adjustable, and the detection objects corresponding to the two throttling elements, that is, the first detection object and the second detection object are both the outdoor ambient temperature T4 and the operation.
  • Frequency F and exhaust pressure; or the first detection object and the second detection object are outdoor ambient temperature T4, operating frequency F, and exhaust temperature, and when cooling or heating operation, first calculated according to outdoor ambient temperature T4 and operating frequency F Set the exhaust pressure or set the exhaust temperature, and then adjust the two throttling elements according to the actual detected exhaust pressure or exhaust temperature.
  • the flow rate is such that the detected exhaust pressure or exhaust temperature reaches a set exhaust pressure or sets an exhaust temperature. Thus, it is simple and reliable.
  • the flow rate of one of the two throttling elements is adjustable, and the object of the throttling element with adjustable flow rate is an outdoor ambient temperature T4, an operating frequency F, and an exhaust gas. Pressure or outdoor ambient temperature T4, operating frequency F and exhaust temperature.
  • the flow rate of one of the two throttling elements is adjustable.
  • the object to be detected is the outdoor ambient temperature T4, and the throttling element is detected during heating.
  • the object is the outdoor ambient temperature T4, the operating frequency F, and the exhaust pressure.
  • the outdoor ambient temperature is preset with a plurality of outdoor temperature intervals, each outdoor temperature interval corresponding to the flow rate of different throttling elements, and the throttling corresponding to the outdoor temperature range in which the actually detected outdoor environmental temperature value is located
  • the flow rate value of the component adjusts the flow rate of the throttle element.
  • the set exhaust pressure is first 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 so that the detected exhaust pressure reaches the set Set the exhaust pressure.
  • the flow rate of the throttle element is adjusted according to the actually detected exhaust pressure so that the detected exhaust pressure reaches the set Set the exhaust pressure.
  • the flow degrees of the two throttling elements are adjustable, and the first detection object corresponding to one of the throttling elements is the outdoor ambient temperature T4, and the outdoor ambient temperature during cooling and heating operations.
  • the first detection object corresponding to one of the throttling elements is the outdoor ambient temperature T4, and the outdoor ambient temperature during cooling and heating operations.
  • the corresponding second detection object is an outdoor ambient temperature and an operating frequency.
  • the set flow rate of the other throttling element may be first calculated according to the outdoor ambient temperature T4 and the operating frequency F, and then according to The flow rate is set to adjust the flow rate of the other throttle element.
  • T4 Flow rate 10 ⁇ T4 ⁇ 20 100 20 ⁇ T4 ⁇ 30 110 30 ⁇ T4 ⁇ 40 120 40 ⁇ T4 ⁇ 50 150 50 ⁇ T4 ⁇ 60 180
  • LA_cool_1 a 1 ⁇ F+b 1 T 4 +c 1
  • LA_cool_1 a 1 ⁇ F+b 1 T 4 +c 1
  • 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.
  • T4 Flow rate 10 ⁇ T4 ⁇ 20 160 5 ⁇ T4 ⁇ 10 180 -5 ⁇ T4 ⁇ 5 200 -10 ⁇ T4 ⁇ -5 250 -15 ⁇ T4 ⁇ -10 300
  • LA_heat_1 x 1 ⁇ F+y 1 T 4 +z 1
  • the control coefficients x, y, and z may each be 0.
  • the 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 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 parameters and/or the outdoor ambient temperature to meet the condition, wherein the compressor operating parameters include the operating current and the exhaust pressure. At least one of the exhaust 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, and the exhaust pressure of the exhaust port. At least one of the operating currents of the two-cylinder compressor.
  • 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 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.
  • the following adjustment commands are set: 115 °C ⁇ TP, shutdown; 110 ° C ⁇ TP ⁇ 115 ° C, down frequency to TP ⁇ 110 ° C; 105 ° C ⁇ TP ⁇ 110°C, frequency hold; TP ⁇ 105°C, release frequency limit.
  • 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 frequency 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.
  • the adjustment command corresponding to the exhaust pressure 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 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 concerne également un climatiseur froid-chaud (100) et un procédé de commande. Le climatiseur froid-chaud (100) comprend : un compresseur à double cylindre (1); un ensemble d'inversion (5), comprenant un premier orifice de soupape de raccordement extérieur (52), un second orifice de soupape de raccordement extérieur (53), un premier orifice de soupape de raccordement intérieur (54) et un second orifice de soupape de raccordement intérieur (55); un échangeur de chaleur extérieur (2) ayant un orifice de rassemblement (21) et deux orifices de dérivation (22a, 22b); et un ensemble échangeur de chaleur intérieur (3). Les deux extrémités de la première partie d'échange de chaleur intérieure (31) de l'ensemble échangeur de chaleur intérieur (3) sont reliées respectivement au premier orifice de soupape de raccordement intérieur (54) et à l'un des orifices de dérivation (22a), et les deux extrémités de la seconde partie d'échange de chaleur intérieure (32) sont reliées respectivement au second orifice de soupape de raccordement intérieur (55) et à l'autre orifice de dérivation (22b).
PCT/CN2016/102940 2016-07-29 2016-10-21 Climatiseur froid-chaud et procédé de commande WO2018018766A1 (fr)

Applications Claiming Priority (20)

Application Number Priority Date Filing Date Title
CN201610625770.4 2016-07-29
CN201620820047 2016-07-29
CN201620820036.9 2016-07-29
CN201620829924.7 2016-07-29
CN201620829924 2016-07-29
CN201610617086.1 2016-07-29
CN201620819388.2 2016-07-29
CN201610625616.7 2016-07-29
CN201620820047.7 2016-07-29
CN201620820036 2016-07-29
CN201610625770.4A CN106016799A (zh) 2016-07-29 2016-07-29 冷暖型空调器
CN201620819388 2016-07-29
CN201610624302 2016-07-29
CN201610625616 2016-07-29
CN201610617086 2016-07-29
CN201610624302.5 2016-07-29
CN201621093570.0U CN206160543U (zh) 2016-07-29 2016-09-29 冷暖型空调器
CN201610867116.4A CN106440457A (zh) 2016-07-29 2016-09-29 冷暖型空调器及控制方法
CN201621093570.0 2016-09-29
CN201610867116.4 2016-09-29

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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
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