WO2015027677A1 - Refrigerating system for variable frequency air conditioner, and variable frequency air conditioner having refrigerating system - Google Patents

Refrigerating system for variable frequency air conditioner, and variable frequency air conditioner having refrigerating system Download PDF

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Publication number
WO2015027677A1
WO2015027677A1 PCT/CN2014/070490 CN2014070490W WO2015027677A1 WO 2015027677 A1 WO2015027677 A1 WO 2015027677A1 CN 2014070490 W CN2014070490 W CN 2014070490W WO 2015027677 A1 WO2015027677 A1 WO 2015027677A1
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WO
WIPO (PCT)
Prior art keywords
valve port
condenser
heat exchanger
refrigeration system
variable frequency
Prior art date
Application number
PCT/CN2014/070490
Other languages
French (fr)
Chinese (zh)
Inventor
***
韩宇
李金波
叶晓龙
赵强
冯博
高军胜
Original Assignee
广东美的制冷设备有限公司
广州华凌制冷设备有限公司
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.)
Filing date
Publication date
Application filed by 广东美的制冷设备有限公司, 广州华凌制冷设备有限公司 filed Critical 广东美的制冷设备有限公司
Priority to BR112015002987-6A priority Critical patent/BR112015002987B1/en
Publication of WO2015027677A1 publication Critical patent/WO2015027677A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
    • F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
    • F24F5/001—Compression cycle type
    • 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
    • F25B6/00—Compression machines, plants or systems, with several condenser circuits
    • F25B6/04—Compression machines, plants or systems, with several condenser circuits arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0403—Refrigeration circuit bypassing means for the condenser

Definitions

  • Refrigeration system for inverter air conditioner and inverter air conditioner having the same
  • the present invention relates to the field of refrigeration, and more particularly to a refrigeration system for an inverter air conditioner and a frequency conversion air conditioner having the same. Background technique
  • a heat sink connected to a refrigerant pipeline is used to cool the circuit board, so that the air conditioner can lower the module temperature of the circuit board during high-frequency cooling, and avoid burning the electronic components due to high temperature.
  • the current technology mainly It is a series of parallel or parallel heat exchangers after throttling. Because the temperature of the refrigerant after throttling is very low, condensed water is easily formed, which causes circuit board failure and affects the service life of the electric control. This technology has not been widely used. Now there is also a heat sink that directly cools the circuit board between the condenser outlet and the throttling element.
  • an object of the present invention is to provide a refrigeration system for an inverter air conditioner, which not only ensures a good cooling effect on the outdoor electromechanical control panel, but also solves the problem that the condensation water affects the outdoor unit. The problem of reliability of the electrical control board.
  • Another object of the present invention is to provide an inverter air conditioner having the refrigeration system.
  • a refrigeration system for an inverter air conditioner includes: a compressor having an exhaust port and an intake port; a four-way valve having first to fourth openings The first opening is connected to the exhaust port, the second opening is connected to the air inlet; the condenser, the first end of the condenser is connected to the third opening; the evaporator, the The first end of the evaporator is connected to the fourth opening; the throttling element, the first end of the throttling element is connected to the second end of the evaporator; and the outdoor electromechanical control board for cooling the inverter air conditioner a heat exchanger connected between the second end of the condenser and the second end of the throttling element; a one-way valve, the one-way valve being connected to the second of the condenser Between the two ends and the second end of the throttling element, the one-way valve is not conducting during cooling, and the refrigerant passes through the heat exchanger when flowing from the condenser to the
  • a refrigeration system for an inverter air conditioner can provide a heat exchanger with a temperature close to or slightly higher than an ambient temperature in a cooling mode by providing a heat exchanger between the condenser and the throttle element.
  • the device is configured to dissipate heat from the outdoor electromechanical control board. Therefore, the outdoor electromechanical control panel can be effectively dissipated without lowering the operating frequency of the compressor (even in the case of a high ambient temperature), thereby ensuring the inverter air conditioner at an ambient temperature.
  • the cooling effect in the higher case improves the user's comfort.
  • the temperature of the refrigerant flowing into the heat exchanger is close to or slightly higher than the ambient temperature, it is possible to avoid the generation of condensation water on the outdoor electromechanical control panel and the temperature drop of the outdoor electromechanical control panel is too low. Therefore, the reliability and safety of the outdoor electromechanical control panel can be improved.
  • the heating mode most of the refrigerant discharged from the throttling element is discharged into the condenser through the one-way valve, and only a small portion of the low-temperature refrigerant dissipates heat to the outdoor electromechanical control panel, and the outdoor electromechanical control panel While cooling, it prevents condensate from being generated, which ensures the reliability of the outdoor electromechanical control panel during system heating operation.
  • the one-way valve has a first valve port, a second valve port, a third valve port, and a fourth valve port, wherein the first valve port and the second valve port are in communication,
  • the third valve port is in communication with the fourth valve port, and the first valve port and the fourth valve port are electrically connected in a direction from the fourth valve port to the first valve port and are in the a valve port is blocked in a direction to the fourth valve port,
  • the first valve port is connected to the second end of the condenser, and the second valve port is connected to the first end of the heat exchanger,
  • the third valve port is connected to the second end of the heat exchanger, and the fourth valve port is connected to the second end of the throttling element.
  • the diameter of the second valve port is smaller than the diameter of the first valve port.
  • the heat exchanger includes a heat pipe having two ends connected to a second end of the condenser and a second end of the throttling element, respectively.
  • the heat exchanger further includes a heat dissipation plate having a first surface and a second surface opposite to each other, and a first groove is disposed on the first surface of the heat dissipation plate, and the heat dissipation pipe is disposed In the first groove.
  • a protrusion is provided on the second surface of the heat dissipation plate.
  • the heat exchanger further includes a fixing plate, the fixing plate is provided with a second groove, the fixing plate is disposed on the heat dissipation plate, the second groove and The first recess cooperates to define a receiving cavity for receiving the heat pipe.
  • the heat pipe is formed as a "U" shaped tube.
  • first groove is formed as a "U" shaped groove.
  • An inverter air conditioner includes: a refrigeration system, which is a refrigeration system for an inverter air conditioner according to the above embodiment of the present invention; an outdoor electromechanical control panel, the outdoor electromechanical control panel is adjacent to the Heat exchanger settings.
  • the inverter air conditioner according to the embodiment of the present invention can effectively dissipate heat from the outdoor electromechanical control board by setting a refrigerating system, and does not generate condensation water on the outdoor electromechanical control board and the outdoor unit The temperature drop of the electric control board is too low. Therefore, the inverter air conditioner according to the embodiment of the invention has the advantages of high cooling efficiency, good performance, high reliability, high safety shape and the like.
  • DRAWINGS 1 is a schematic structural view of a refrigeration system for an inverter air conditioner according to an embodiment of the present invention;
  • FIG. 2 is a partial structural schematic view of a refrigeration system for an inverter air conditioner according to an embodiment of the present invention
  • FIG. 3 is a schematic structural view of a heat exchanger of a refrigeration system for an inverter air conditioner according to an embodiment of the present invention
  • FIG. 4 is an exploded view of a heat exchanger of a refrigeration system for an inverter air conditioner according to an embodiment of the present invention.
  • Refrigeration system 10 compressor 100, condenser 200,
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may expressly or implicitly include one or more of the features.
  • the meaning of “plurality” is two or more, unless specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like should be understood broadly, and may be either a fixed connection or a detachable connection, unless otherwise explicitly stated and defined. , or integrated; can be mechanical connection, or electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements.
  • installation can be understood on a case-by-case basis.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may include first and second features, unless otherwise explicitly defined and defined. Not directly contact but through Additional features are in contact between them.
  • the first feature "above”, “above” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below and below the second feature, or merely indicating that the first feature level is less than the second feature.
  • the inverter air conditioner according to an embodiment of the present invention includes a refrigeration system 10 and an outdoor electromechanical control panel (not shown).
  • a refrigeration system 10 for an inverter air conditioner includes a compressor 100, a condenser 200, a four-way valve 600, a heat exchanger 300, a throttle element 400, an evaporator 500, and a check valve. 700.
  • the refrigeration system 10 has a cooling mode and a heating mode.
  • the compressor 100 has an exhaust port (equivalent to an inlet) and an intake port (equivalent to an outlet).
  • the four-way valve 600 has a first opening a, a second opening 13, a third opening c and a fourth opening d, the first opening a being connected to the exhaust port and the second opening b being connected to the suction port.
  • the first opening a and the third opening c are turned on and the second opening b and the fourth opening d are turned on.
  • the refrigeration system 10 is in the heating mode, the first opening a and the fourth opening d are turned on and the second opening b and the third opening c are turned on.
  • the first end of the condenser 200 is connected to the third opening c.
  • the first end of the evaporator 500 is connected to the fourth opening d.
  • the first end of the throttle element 400 is coupled to the second end of the evaporator 500.
  • the heat exchanger 300 is for cooling the outdoor electromechanical control panel of the inverter air conditioner, and the heat exchanger 300 is connected between the second end of the condenser 200 and the second end of the throttle element 400.
  • the one-way valve 700 is connected between the second end of the condenser 200 and the second end of the throttle element 400.
  • the one-way valve 700 When cooling, the one-way valve 700 is not conducting, and the refrigerant passes through the heat exchanger when flowing from the condenser 200 to the throttle element 400.
  • Device 300 When heating, the check valve 700 is turned on, and the refrigerant shorts the heat exchanger 300 when flowing from the throttle element 400 to the condenser 200.
  • the one-way valve 700 is unidirectionally turned in the direction from the throttle element 400 to the condenser 200, and the one-way valve 700 is not conducting in the direction from the condenser 200 to the throttle element 400.
  • the refrigerant discharged from the condenser 200 at this time flows through the heat exchanger 300 to the throttle element 400, and the check valve 700 is in a non-conducting state.
  • the refrigerant flowing out of the throttle element 400 flows through the check valve 700 to the condenser 200, at which time the refrigerant shorts the heat exchanger 300, that is, the refrigerant does not pass or only passes through the heat exchanger 300. .
  • the first end of the condenser 200 is referred to as the inlet of the condenser 200
  • the second end of the condenser 200 is referred to as the outlet of the condenser 200
  • the second end of the evaporator 500 is referred to as the second end of the evaporator 500.
  • the inlet of the evaporator 500, the first end of the evaporator 500 is referred to as the outlet of the evaporator 500
  • the first end of the heat exchanger 300 is referred to as the inlet of the heat exchanger 500
  • the second end of the heat exchanger 300 is referred to as the inlet of the heat exchanger 300.
  • the first end of throttling element 400 is referred to as the outlet of throttling element 400
  • the second end of throttling element 400 is referred to as the inlet of throttling element 400.
  • the inlets and outlets of the various components are in the cooling mode for the flow direction of the refrigerant.
  • the inlets and outlets of the various components are exactly opposite to the actual inlets and outlets (except for the compressor 100, whether in the cooling mode or the heating mode, the refrigerant enters from the inlet of the compressor 100)
  • the compressor 100 is discharged from the outlet of the compressor 100).
  • the refrigerant enters the condenser 200 from the inlet of the condenser 200 and exits the condenser 200 from the outlet of the condenser 200.
  • the refrigerant enters the condenser 200 from the outlet of the condenser 200.
  • the condenser 200 is removed from the inlet of the condenser 200.
  • the inlet of the condenser 200 is connected to the third opening c.
  • the inlet of the heat exchanger 300 is connected to the outlet of the condenser 200, and the inlet of the throttle element 400 is connected to the outlet of the heat exchanger 300.
  • the inlet of the evaporator 500 is connected to the outlet of the throttle element 400, and the outlet of the evaporator 500 is connected to the fourth opening d.
  • heat exchanger 300 is disposed between condenser 200 and throttling element 400.
  • the outdoor electromechanical control board is adjacent to the heat exchanger 300 to dissipate heat from the outdoor electromechanical control board by using the heat exchanger 300.
  • the first opening a of the four-way valve 600 may be connected to the outlet of the compressor 100, and the second opening b of the four-way valve 600 may be connected to the inlet of the compressor 100, the fourth of the four-way valve 600
  • the three opening c may be connected to the inlet of the condenser 200, and the fourth opening d of the four-way valve 600 may be connected to the outlet of the evaporator 500.
  • the refrigeration system 10 can perform cooling and heating. That is to say, the refrigeration system 10 has two operating modes of cooling and heating.
  • the first opening a and the third opening c of the four-way valve 600 are turned on, and the second opening b and the fourth opening d are turned on, as indicated by the solid arrows in FIG.
  • the refrigerant discharged from the exhaust port 10 of the compressor 1 enters the condenser 200 through the four-way valve 600, and the refrigerant condenses and dissipates heat in the condenser 200, and the temperature of the refrigerant after condensation heat dissipation falls to near or slightly higher than the outdoor temperature. Ambient temperature.
  • the refrigerant discharged from the condenser 200 enters the heat exchanger 300, and the refrigerant entering the heat exchanger 300 absorbs heat and cools the outdoor electromechanical control panel from the heat exchanger.
  • the refrigerant discharged from the 300 enters the throttling element 400 to be throttled, the refrigerant discharged from the throttle element 400 enters the evaporator 500, and the refrigerant entering the evaporator 500 absorbs heat and cools the use room, and finally from the evaporator 500.
  • the discharged refrigerant is sequentially discharged into the compressor 1 through the four-way valve 600 and the suction port 11, and the refrigeration cycle is completed.
  • the first opening a and the fourth opening d in the four-way valve 600 are turned on, and the second opening b and the third opening c are turned on, as indicated by the dotted arrows in FIG.
  • the refrigerant discharged from the exhaust port 10 of the compressor 1 is discharged into the evaporator 500 through the four-way valve 600, and the refrigerant is condensed and radiated in the evaporator 500 to exotherm the use room, and is discharged from the evaporator 500.
  • the refrigerant enters the throttling element 400 for throttling.
  • the check valve 700 since the check valve 700 is turned on, most of the refrigerant discharged from the throttle element 400 enters the condenser 200 through the check valve 700, and the refrigerant flowing into the condenser 200 evaporates and absorbs heat to lower the outdoor ambient temperature. Thereafter, the refrigerant is sequentially discharged into the compressor 1 through the four-way valve 600 and the suction port 11, and the heating cycle is completed.
  • the outdoor ambient temperature is low, and there is only a small amount of refrigerant or even in the heating cycle.
  • the non-refrigerant passes through the heat exchanger 300 to prevent the low temperature refrigerant from lowering the temperature of the outdoor electromechanical control panel, thereby ensuring the reliability of the outdoor electromechanical control panel during the heating operation of the refrigeration system 10.
  • the refrigeration system 10 for an inverter air conditioner can provide a refrigerant having a temperature close to or slightly higher than an ambient temperature by providing a heat exchanger 300 between the condenser 200 and the throttle element 400.
  • the heat exchanger 300 is passed through to dissipate heat from the outdoor electromechanical control panel. Therefore, the outdoor electromechanical control panel can be effectively dissipated without lowering the operating frequency of the compressor 100 (even in the case of a high ambient temperature), thereby ensuring that the inverter air conditioner is at an ambient temperature.
  • the cooling effect in high cases improves user comfort.
  • the temperature of the refrigerant flowing into the heat exchanger 300 is close to or slightly higher than the ambient temperature, it is possible to avoid the generation of condensation water on the outdoor electromechanical control panel and the temperature drop of the outdoor electromechanical control panel. Low, so that the reliability and safety of the outdoor electrical control panel can be improved.
  • the heating mode most of the refrigerant discharged from the throttling element 400 is discharged into the condenser 200 through the check valve 700, and only a small portion of the low-temperature refrigerant dissipates heat to the outdoor electromechanical control panel, and is electrically controlled to the outdoor.
  • the plate is cooled while preventing the generation of condensed water, which can ensure the reliability of the outdoor electromechanical control board during the heating operation of the refrigeration system 10.
  • the inverter air conditioner according to the embodiment of the present invention can effectively dissipate the outdoor electromechanical control board by providing the refrigeration system 10, and does not generate condensation water on the outdoor electromechanical control board and the outdoor environment The temperature drop of the electromechanical control board is too low. Therefore, the inverter air conditioner according to the embodiment of the invention has the advantages of high cooling efficiency, good performance, high reliability, high safety shape and the like.
  • the temperature of the outdoor electromechanical control panel of the inverter air conditioner according to the embodiment of the present invention can be lowered by more than 15 degrees Celsius, and the operating frequency of the compressor 100 can be increased by 20 Hz compared with the existing inverter air conditioner.
  • the refrigeration capacity of the inverter air conditioner according to the embodiment of the present invention is more than 10% higher than that of the existing inverter air conditioner.
  • the refrigeration capacity of the inverter air conditioner according to the embodiment of the present invention is more than 20% higher than that of the conventional inverter air conditioner.
  • the one-way valve 700 has a first valve port 710, a second valve port 720, a third valve port 730, and a fourth valve port 740, the first valve The port 710 is in communication with the second port 720, the third port 730 is in communication with the fourth port 740, and the first port 710 and the fourth port 740 are in the direction from the fourth port 740 to the first port 710. It is turned on and is turned off in the direction from the first valve port 710 to the fourth valve port 740.
  • the one-way valve 700 may have a fluid passage therein, and the discharge end of the one-way valve 700 may be provided with a first valve port 710 and a second valve port 720 communicating with the fluid passage, and the inlet end of the one-way valve 700 may be A third valve port 730 and a fourth valve port 740 are provided in communication with the fluid passage.
  • the first valve port 710 may be connected to the outlet of the condenser 200
  • the second valve port 720 may be connected to the inlet of the heat exchanger 300
  • the third valve port 730 may be connected to the outlet of the heat exchanger 300
  • the fourth valve port 740 can be coupled to the inlet of throttling element 400.
  • the structure of the one-way valve 700 in the drawing is only an exemplary description, and the one-way valve 700
  • the configuration of the check valve 700 may be other structures as long as it can be unidirectionally guided in the direction from the throttle element 400 to the second end of the condenser 200.
  • refrigerant discharged from the condenser 200 can enter the fluid passage from the first port 710. Since the first valve port 710 is located at the discharge end of the one-way valve 700, the first valve port 710 and the second valve port 720 are open, the third valve port 730 and the fourth valve port 740 are in communication, the first valve port 710 and the fourth port The valve port 740 is closed in a direction from the first valve port 710 to the fourth valve port 740. Therefore, the refrigerant cannot flow out from the third port 730 and the fourth port 740, and the refrigerant can only flow out from the second port 720 and further into the heat exchanger 300. The refrigerant discharged from the heat exchanger 300 can enter the fluid passage from the third valve port 730 and be discharged from the fourth valve port 740.
  • the refrigerant discharged from the throttle element 400 may From the fourth valve port 740 into the fluid passage and from the first valve port 710, a small amount of refrigerant enters the heat exchanger 300 from the third valve port 730 and/or the second valve port 720. Inside.
  • the diameter of the second valve port 720 can be smaller than the diameter of the first valve port 710.
  • the amount of refrigerant entering the heat exchanger 300 can be further reduced, thereby further preventing the generation of condensation water on the outdoor electromechanical control panel or the outdoor unit.
  • the temperature drop of the electric control board is too low.
  • the refrigeration system 10 may further include a controller (not shown).
  • the controller may be disposed between the second port 720 and the inlet of the heat exchanger 300 or between the third port 730 and the outlet of the heat exchanger 300.
  • the controller can be turned on when the refrigeration system 10 is in the cooling mode.
  • the controller can be turned off to prevent the refrigerant from entering the heat exchanger 300, thereby avoiding the generation of condensation water on the outdoor electromechanical control panel or the outdoor electromechanical The temperature drop of the control board is too low.
  • the heat exchanger 300 may include a heat pipe 310, the inlet of the heat pipe 310 may be connected to the outlet of the condenser 200, and the outlet of the heat pipe 310 may be throttled
  • the inlets of component 400 are connected.
  • the heat exchanger 300 has the advantages of a simple structure and the like.
  • the first end of the heat pipe 310 is connected to the second port 720, and the second end of the heat pipe 310 is connected to the third port 730.
  • the heat exchanger 300 may further include a heat dissipation plate 320 having first and second surfaces opposite to each other, and a first surface of the heat dissipation plate 320 A first groove 321 may be provided thereon.
  • the heat pipe 310 may include a first subsection 311, a second subsection 312 connected to the first end of the first subsection 311, and a third subsection 313 connected to the second end of the first subsection 311. A portion of a subsection 311 may be disposed within the first recess 321 . Wherein the second subsection 312 can be coupled to the outlet of the condenser 200 and the third subsection 313 can be coupled to the inlet of the throttle element 400.
  • the shape of the portion of the first subsection 311 can be adapted to the shape of the first recess 321 .
  • First subsection The 311 may be U-shaped, thereby extending the flow path of the refrigerant, so that the outdoor electromechanical control panel can be more efficiently dissipated.
  • the first subsection 311, the second subsection 312, and the third subsection 313 may be integrally formed.
  • the heat pipe 310 is formed as a "U" shaped tube
  • the first groove 321 is formed as a "U" shaped groove.
  • a boss 323 may be disposed on the second surface 322 of the heat sink 320.
  • the boss 323 can be in contact with a component having a large amount of heat such as an IPM (Intelligent Power Module) or a bridge stack on the outdoor electromechanical control board.
  • IPM Intelligent Power Module
  • bridge stacks on the outdoor electrical control panel can be arranged on the same line.
  • the heat exchanger 300 may further include a fixing plate 330, and the surface of the fixing plate 330 may be provided with a second groove 331.
  • the fixing plate 330 may be disposed on the heat dissipation plate 320, and the remaining portion of the first sub-section 311 may be disposed in the second groove 331.
  • the second groove 331 may be opposite to the first groove 321
  • the receiving groove may be defined between the second groove 331 and the first groove 321
  • the first sub-section 311 may be disposed in the receiving cavity.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Air Conditioning Control Device (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Abstract

A refrigerating system (10) for a variable frequency air conditioner, and a variable frequency air conditioner having the refrigerating system; the refrigerating system (10) comprises a compressor (100), a four-way valve (600), a condenser (200), a heat exchanger (300), a throttling element (400), an evaporator (500) and a one-way valve (700); the heat exchanger (300) and the one-way valve (700) are connected between the second end of the condenser (200) and the second end of the throttling element (400); when cooling, the one-way valve (700) is closed, and refrigerant flows through the heat exchanger (300) from the condenser (200) to the throttling element (400); and when heating, the one-way valve (700) is open, and the refrigerant bypasses the heat exchanger (300) when flowing from the throttling element (400) to the condenser (200).

Description

用于变频空调的制冷***和具有该制冷***的变频空调  Refrigeration system for inverter air conditioner and inverter air conditioner having the same
技术领域 Technical field
本发明涉及制冷领域，尤其是涉及一种用于变频空调的制冷***和具有该制冷***的变 频空调。 背景技术  The present invention relates to the field of refrigeration, and more particularly to a refrigeration system for an inverter air conditioner and a frequency conversion air conditioner having the same. Background technique
现有技术有采用与冷媒管路连接的散热器对电路板进行降温， 使空调器在高频制冷时， 能将电路板的模块温度降低， 避免因高温烧坏电子元器件， 目前的技术主要是从节流后的 管路串或并联换热器， 由于节流后的冷媒温度很低， 易形成冷凝水， 导致电路板故障， 影 响电控使用寿命， 该技术没有得到广泛应用。 现在也有在冷凝器出口和节流元件之间直接 串接对电路板进行降温的散热器， 该技术方案， 制冷时降温效果好， 且不会产生冷凝水， 但在制热时， 由于冷媒温度很低， 会造成模块温度过低， 还是会产生冷凝水， 致电路板故 障， 影响电控使用寿命。 发明内容  In the prior art, a heat sink connected to a refrigerant pipeline is used to cool the circuit board, so that the air conditioner can lower the module temperature of the circuit board during high-frequency cooling, and avoid burning the electronic components due to high temperature. The current technology mainly It is a series of parallel or parallel heat exchangers after throttling. Because the temperature of the refrigerant after throttling is very low, condensed water is easily formed, which causes circuit board failure and affects the service life of the electric control. This technology has not been widely used. Now there is also a heat sink that directly cools the circuit board between the condenser outlet and the throttling element. This technical solution has a good cooling effect during cooling and does not generate condensed water, but during heating, due to the refrigerant temperature Very low, it will cause the module temperature to be too low, or it will produce condensed water, which will cause the circuit board to malfunction and affect the service life of the electronic control. Summary of the invention
本发明旨在至少在一定程度上解决现有技术中的上述技术问题之一。为此，本发明的一 个目的在于提出一种用于变频空调的制冷***， 该制冷***不仅可保证对室外机电控板起 到很好的降温作用， 同时还可解决凝露水影响室外机电控板可靠性的问题。  The present invention aims to solve at least one of the above technical problems in the prior art to some extent. To this end, an object of the present invention is to provide a refrigeration system for an inverter air conditioner, which not only ensures a good cooling effect on the outdoor electromechanical control panel, but also solves the problem that the condensation water affects the outdoor unit. The problem of reliability of the electrical control board.
本发明的另一个目的在于提出一种具有所述制冷***的变频空调。  Another object of the present invention is to provide an inverter air conditioner having the refrigeration system.
根据本发明实施例的用于变频空调的制冷***， 包括： 压縮机， 所述压縮机具有排气口 和吸气口； 四通阀， 所述四通阀具有第一至第四开口， 所述第一开口与所述排气口相连， 所述第二开口与所述吸气口相连； 冷凝器， 所述冷凝器的第一端与所述第三开口相连； 蒸 发器， 所述蒸发器的第一端与所述第四开口相连； 节流元件， 所述节流元件的第一端与所 述蒸发器的第二端相连； 冷却所述变频空调的室外机电控板的换热器， 所述换热器连接在 所述冷凝器的第二端与所述节流元件的第二端之间； 单向阀， 所述单向阀连接在所述冷凝 器的第二端与所述节流元件的第二端之间， 制冷时， 所述单向阀不导通， 冷媒从所述冷凝 器流向所述节流元件时通过所述换热器； 制热时， 所述单向阀导通， 冷媒从所述节流元件 流向所述冷凝器时短路所述换热器。  A refrigeration system for an inverter air conditioner according to an embodiment of the present invention includes: a compressor having an exhaust port and an intake port; a four-way valve having first to fourth openings The first opening is connected to the exhaust port, the second opening is connected to the air inlet; the condenser, the first end of the condenser is connected to the third opening; the evaporator, the The first end of the evaporator is connected to the fourth opening; the throttling element, the first end of the throttling element is connected to the second end of the evaporator; and the outdoor electromechanical control board for cooling the inverter air conditioner a heat exchanger connected between the second end of the condenser and the second end of the throttling element; a one-way valve, the one-way valve being connected to the second of the condenser Between the two ends and the second end of the throttling element, the one-way valve is not conducting during cooling, and the refrigerant passes through the heat exchanger when flowing from the condenser to the throttling element; The check valve is turned on, and the refrigerant is short-circuited when flowing from the throttling element to the condenser Heat.
根据本发明实施例的用于变频空调的制冷***通过在冷凝器与节流元件之间设置换热 器， 从而在制冷模式时， 可以使温度接近或略高于环境温度的冷媒流过换热器以便对所述 室外机电控板进行散热。 由此可以在不降低压縮机的运转频率的情况下有效地对所述室外 机电控板进行散热 （即便是在环境温度较高的情况下）， 从而可以确保变频空调在环境温度 较高情况下的制冷效果， 提高用户使用舒适性。 而且， 由于流入换热器的冷媒的温度接近 或略高于环境温度， 因此可以避免在所述室外机电控板上产生凝露水和将所述室外机电控 板的温度降的过低， 从而可以提高所述室外机电控板的可靠性和安全性。 在制热模式时， 从节流元件排出的冷媒大部分通过单向阀排入到冷凝器中， 只有一小部分低温冷媒对所述 室外机电控板进行散热， 在对室外机电控板降温的同时又防止冷凝水产生， 可保证***制 热运行时室外机电控板的可靠性。 A refrigeration system for an inverter air conditioner according to an embodiment of the present invention can provide a heat exchanger with a temperature close to or slightly higher than an ambient temperature in a cooling mode by providing a heat exchanger between the condenser and the throttle element. The device is configured to dissipate heat from the outdoor electromechanical control board. Therefore, the outdoor electromechanical control panel can be effectively dissipated without lowering the operating frequency of the compressor (even in the case of a high ambient temperature), thereby ensuring the inverter air conditioner at an ambient temperature. The cooling effect in the higher case improves the user's comfort. Moreover, since the temperature of the refrigerant flowing into the heat exchanger is close to or slightly higher than the ambient temperature, it is possible to avoid the generation of condensation water on the outdoor electromechanical control panel and the temperature drop of the outdoor electromechanical control panel is too low. Therefore, the reliability and safety of the outdoor electromechanical control panel can be improved. In the heating mode, most of the refrigerant discharged from the throttling element is discharged into the condenser through the one-way valve, and only a small portion of the low-temperature refrigerant dissipates heat to the outdoor electromechanical control panel, and the outdoor electromechanical control panel While cooling, it prevents condensate from being generated, which ensures the reliability of the outdoor electromechanical control panel during system heating operation.
在本发明的一些实施例中，所述单向阀具有第一阀口、第二阀口，第三阀口和第四阀口， 所述第一阀口和第二阀口连通， 所述第三阀口和第四阀口连通， 所述第一阀口和所述第四 阀口在从所述第四阀口到所述第一阀口的方向上导通且在从所述第一阀口到所述第四阀口 的方向上截止， 所述第一阀口与所述冷凝器的第二端相连， 所述第二阀口与所述换热器的 第一端相连， 所述第三阀口与所述换热器的第二端相连， 所述第四阀口与所述节流元件的 第二端相连。  In some embodiments of the present invention, the one-way valve has a first valve port, a second valve port, a third valve port, and a fourth valve port, wherein the first valve port and the second valve port are in communication, The third valve port is in communication with the fourth valve port, and the first valve port and the fourth valve port are electrically connected in a direction from the fourth valve port to the first valve port and are in the a valve port is blocked in a direction to the fourth valve port, the first valve port is connected to the second end of the condenser, and the second valve port is connected to the first end of the heat exchanger, The third valve port is connected to the second end of the heat exchanger, and the fourth valve port is connected to the second end of the throttling element.
进一步地， 所述第二阀口的直径小于所述第一阀口的直径。  Further, the diameter of the second valve port is smaller than the diameter of the first valve port.
在本发明的一些实施例中，所述换热器包括散热管，所述散热管的两端分别与所述冷凝 器的第二端和所述节流元件的第二端相连。  In some embodiments of the invention, the heat exchanger includes a heat pipe having two ends connected to a second end of the condenser and a second end of the throttling element, respectively.
进一步地，所述换热器还包括散热板，所述散热板具有彼此相对的第一表面和第二表面， 所述散热板的第一表面上设有第一凹槽， 所述散热管设在所述第一凹槽内。  Further, the heat exchanger further includes a heat dissipation plate having a first surface and a second surface opposite to each other, and a first groove is disposed on the first surface of the heat dissipation plate, and the heat dissipation pipe is disposed In the first groove.
更进一步地， 所述散热板的第二表面上设有凸台。  Further, a protrusion is provided on the second surface of the heat dissipation plate.
在本发明的进一步实施例中， 所述换热器还包括固定板， 所述固定板上设有第二凹槽， 所述固定板设在所述散热板上， 所述第二凹槽和所述第一凹槽配合以限定出用于容纳所述 散热管的容纳腔。  In a further embodiment of the present invention, the heat exchanger further includes a fixing plate, the fixing plate is provided with a second groove, the fixing plate is disposed on the heat dissipation plate, the second groove and The first recess cooperates to define a receiving cavity for receiving the heat pipe.
优选地， 所述散热管形成为 "U"形管。  Preferably, the heat pipe is formed as a "U" shaped tube.
进一步地， 所述第一凹槽形成为 "U"形凹槽。  Further, the first groove is formed as a "U" shaped groove.
根据本发明实施例的变频空调， 包括： 制冷***， 所述制冷***为根据本发明上述实施 例的用于变频空调的制冷***； 室外机电控板， 所述室外机电控板邻近所述换热器设置。 根据本发明实施例的变频空调通过设置制冷***，从而可以有效地对所述室外机电控板 进行散热， 且不会在所述室外机电控板上产生凝露水和将所述室外机电控板的温度降的过 低。 因此， 根据本发明实施例的变频空调具有制冷效率高、 性能好、 可靠性高、 安全形高 等优点。 附图说明 图 1是根据本发明实施例的用于变频空调的制冷***的结构示意图； An inverter air conditioner according to an embodiment of the present invention includes: a refrigeration system, which is a refrigeration system for an inverter air conditioner according to the above embodiment of the present invention; an outdoor electromechanical control panel, the outdoor electromechanical control panel is adjacent to the Heat exchanger settings. The inverter air conditioner according to the embodiment of the present invention can effectively dissipate heat from the outdoor electromechanical control board by setting a refrigerating system, and does not generate condensation water on the outdoor electromechanical control board and the outdoor unit The temperature drop of the electric control board is too low. Therefore, the inverter air conditioner according to the embodiment of the invention has the advantages of high cooling efficiency, good performance, high reliability, high safety shape and the like. DRAWINGS 1 is a schematic structural view of a refrigeration system for an inverter air conditioner according to an embodiment of the present invention;
图 2是根据本发明实施例的用于变频空调的制冷***的局部结构示意图；  2 is a partial structural schematic view of a refrigeration system for an inverter air conditioner according to an embodiment of the present invention;
图 3是根据本发明实施例的用于变频空调的制冷***的换热器的结构示意图;  3 is a schematic structural view of a heat exchanger of a refrigeration system for an inverter air conditioner according to an embodiment of the present invention;
图 4是根据本发明实施例的用于变频空调的制冷***的换热器的***图。 附图标记：  4 is an exploded view of a heat exchanger of a refrigeration system for an inverter air conditioner according to an embodiment of the present invention. Reference mark:
制冷*** 10、 压縮机 100、 冷凝器 200、  Refrigeration system 10, compressor 100, condenser 200,
换热器 300、 散热管 310、 第一子段 311、 第二子段 312、 第三子段 313、 散热板 320、 第一凹槽 321、 第二表面 322、 凸台 323、 固定板 330、 第二凹槽 331、 节流元件 400、 蒸发 器 500、 四通阀 600、 第一开口 a、 第二开口 13、 第三开口 c、 第四开口 d、 单向阀 700、 第 一阀口 710、 第二阀口 720、 第三阀口 730、 第四阀口 740 具体实施方式  The heat exchanger 300, the heat pipe 310, the first sub-section 311, the second sub-section 312, the third sub-section 313, the heat dissipation plate 320, the first groove 321, the second surface 322, the boss 323, the fixing plate 330, The second groove 331 , the throttle element 400 , the evaporator 500 , the four-way valve 600 , the first opening a , the second opening 13 , the third opening c , the fourth opening d , the check valve 700 , and the first valve port 710 Second valve port 720, third valve port 730, fourth valve port 740
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或 类似的标号表示相同或类似的元件或具有相同或类似功能的元件。 下面通过参考附图描述 的实施例是示例性的， 旨在用于解释本发明， 而不能理解为对本发明的限制。  The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.
在本发明的描述中， 需要理解的是， 术语 "中心"、 "纵向"、 "横向"、 "长度"、 "宽度"、 "厚度"、 "上"、 "下"、 "前"、 "后"、 "左"、 "右"、 "竖直"、 "水平"、 "顶"、 "底 " "内"、 "外"、 "顺时针"、 "逆时针"等指示的方位或位置关系为基于附图所示的方位或位置关系， 仅是 为了便于描述本发明和简化描述， 而不是指示或暗示所指的装置或元件必须具有特定的方 位、 以特定的方位构造和操作， 因此不能理解为对本发明的限制。  In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "previous", " Orientation or position of the following "," "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. The relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of the description of the invention and the simplified description, and is not intended to indicate or imply that the device or component referred to has a specific orientation, and is constructed and operated in a specific orientation. It is not to be understood as limiting the invention.
此外， 术语"第一"、 "第二"仅用于描述目的， 而不能理解为指示或暗示相对重要性或 者隐含指明所指示的技术特征的数量。 由此， 限定有 "第一"、 "第二" 的特征可以明示或 者隐含地包括一个或者更多个该特征。 在本发明的描述中， "多个" 的含义是两个或两个以 上， 除非另有明确具体的限定。  Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" may expressly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless specifically defined otherwise.
在本发明中， 除非另有明确的规定和限定， 术语 "安装"、 "相连"、 "连接"、 "固定"等 术语应做广义理解， 例如， 可以是固定连接， 也可以是可拆卸连接， 或成一体； 可以是机 械连接， 也可以是电连接； 可以是直接相连， 也可以通过中间媒介间接相连， 可以是两个 元件内部的连通或两个元件的相互作用关系。 对于本领域的普通技术人员而言， 可以根据 具体情况理解上述术语在本发明中的具体含义。  In the present invention, the terms "installation", "connected", "connected", "fixed" and the like should be understood broadly, and may be either a fixed connection or a detachable connection, unless otherwise explicitly stated and defined. , or integrated; can be mechanical connection, or electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements. 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.
在本发明中， 除非另有明确的规定和限定， 第一特征在第二特征之 "上" 或之 "下" 可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过 它们之间的另外的特征接触。 而且， 第一特征在第二特征 "之上"、 "上方 "和 "上面" 包括第一特征在第二特征正上方和斜上方， 或仅仅表示第一特征水平高度高于第二特 征。 第一特征在第二特征 "之下" 、 "下方"和 "下面"包括第一特征在第二特征正下 方和斜下方， 或仅仅表示第一特征水平高度小于第二特征。 In the present invention, the first feature "on" or "under" the second feature may include direct contact of the first and second features, and may include first and second features, unless otherwise explicitly defined and defined. Not directly contact but through Additional features are in contact between them. Moreover, the first feature "above", "above" and "above" the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and below the second feature, or merely indicating that the first feature level is less than the second feature.
下面描述根据本发明实施例的变频空调。根据本发明实施例的变频空调包括制冷系 统 10和室外机电控板 （图中未示出） 。  An inverter air conditioner according to an embodiment of the present invention will be described below. The inverter air conditioner according to an embodiment of the present invention includes a refrigeration system 10 and an outdoor electromechanical control panel (not shown).
首先参考图 1-图 4描述根据本发明实施例的用于变频空调的制冷*** 10。 如图 1- 图 4所示， 根据本发明实施例的制冷*** 10包括压縮机 100、 冷凝器 200、 四通阀 600、 换 热器 300、 节流元件 400、 蒸发器 500和单向阀 700。 其中， 制冷*** 10具有制冷模式和制 热模式。  First, a refrigeration system 10 for an inverter air conditioner according to an embodiment of the present invention will be described with reference to Figs. As shown in FIGS. 1 to 4, a refrigeration system 10 according to an embodiment of the present invention includes a compressor 100, a condenser 200, a four-way valve 600, a heat exchanger 300, a throttle element 400, an evaporator 500, and a check valve. 700. Among them, the refrigeration system 10 has a cooling mode and a heating mode.
压縮机 100具有排气口 （相当于进口） 和吸气口 （相当于出口）。 四通阀 600具有第一 开口 a、 第二开口 13、 第三开口 c和第四开口 d， 第一开口 a与排气口相连， 第二开口 b与 吸气口相连。 其中当制冷*** 10处于制冷模式时， 第一开口 a和第三开口 c导通且第二开 口 b和第四开口 d导通。 当制冷*** 10处于制热模式时， 第一开口 a和第四开口 d导通且 第二开口 b和第三开口 c导通。  The compressor 100 has an exhaust port (equivalent to an inlet) and an intake port (equivalent to an outlet). The four-way valve 600 has a first opening a, a second opening 13, a third opening c and a fourth opening d, the first opening a being connected to the exhaust port and the second opening b being connected to the suction port. When the refrigeration system 10 is in the cooling mode, the first opening a and the third opening c are turned on and the second opening b and the fourth opening d are turned on. When the refrigeration system 10 is in the heating mode, the first opening a and the fourth opening d are turned on and the second opening b and the third opening c are turned on.
冷凝器 200的第一端与第三开口 c相连。蒸发器 500的第一端和第四开口 d相连。节流 元件 400的第一端与蒸发器 500的第二端相连。 换热器 300用于冷却变频空调的室外机电 控板， 换热器 300连接在冷凝器 200的第二端与节流元件 400的第二端之间。  The first end of the condenser 200 is connected to the third opening c. The first end of the evaporator 500 is connected to the fourth opening d. The first end of the throttle element 400 is coupled to the second end of the evaporator 500. The heat exchanger 300 is for cooling the outdoor electromechanical control panel of the inverter air conditioner, and the heat exchanger 300 is connected between the second end of the condenser 200 and the second end of the throttle element 400.
单向阀 700连接在冷凝器 200的第二端与节流元件 400的第二端之间，制冷时，单向阀 700不导通， 冷媒从冷凝器 200流向节流元件 400时通过换热器 300。 制热时， 单向阀 700 导通， 冷媒从节流元件 400流向冷凝器 200时短路换热器 300。 换言之， 单向阀 700在从节 流元件 400到冷凝器 200的方向上单向导通， 单向阀 700在从冷凝器 200到节流元件 400 的方向上不导通。  The one-way valve 700 is connected between the second end of the condenser 200 and the second end of the throttle element 400. When cooling, the one-way valve 700 is not conducting, and the refrigerant passes through the heat exchanger when flowing from the condenser 200 to the throttle element 400. Device 300. When heating, the check valve 700 is turned on, and the refrigerant shorts the heat exchanger 300 when flowing from the throttle element 400 to the condenser 200. In other words, the one-way valve 700 is unidirectionally turned in the direction from the throttle element 400 to the condenser 200, and the one-way valve 700 is not conducting in the direction from the condenser 200 to the throttle element 400.
也就是说， 在制冷*** 10处于制冷模式时， 此时从冷凝器 200排出的冷媒通过换热器 300流向节流元件 400， 单向阀 700处于不导通状态。 在制冷*** 10处于制热模式时， 从 节流元件 400流出的冷媒经过单向阀 700流向冷凝器 200， 此时冷媒短路换热器 300， 即冷 媒不经过或只有很少经过换热器 300。  That is, when the refrigeration system 10 is in the cooling mode, the refrigerant discharged from the condenser 200 at this time flows through the heat exchanger 300 to the throttle element 400, and the check valve 700 is in a non-conducting state. When the refrigeration system 10 is in the heating mode, the refrigerant flowing out of the throttle element 400 flows through the check valve 700 to the condenser 200, at which time the refrigerant shorts the heat exchanger 300, that is, the refrigerant does not pass or only passes through the heat exchanger 300. .
在本发明的下面描述中， 将冷凝器 200的第一端称为冷凝器 200的进口， 将冷凝器 200 的第二端称为冷凝器 200的出口， 将蒸发器 500的第二端称为蒸发器 500的进口， 将蒸发 器 500的第一端称为蒸发器 500的出口， 将换热器 300的第一端称为换热器 500的进口， 换热器 300的第二端称为换热器 500的出口， 节流元件 400的第一端称为节流元件 400的 出口， 节流元件 400的第二端称为节流元件 400的进口。 需要说明的是， 在制冷和制热这两个模式中， 冷媒的流向完全相反。各个部件（例如冷 凝器 200、 换热器 300、 节流元件 400、 蒸发器 500等） 的进口和出口是在制冷模式下针对 冷媒的流向而言的。 因此， 在制热模式下， 各个部件的进口和出口与实际的进口和出口正 好相反 （压縮机 100除外， 无论是制冷模式还是制热模式， 冷媒都是从压縮机 100的进口 进入到压縮机 100内且从压縮机 100的出口排出）。例如，在制冷模式下，冷媒从冷凝器 200 的进口进入到冷凝器 200内且从冷凝器 200的出口离开冷凝器 200， 在制热模式下， 冷媒从 冷凝器 200的出口进入到冷凝器 200内且从冷凝器 200的进口离开冷凝器 200。 In the following description of the present invention, the first end of the condenser 200 is referred to as the inlet of the condenser 200, the second end of the condenser 200 is referred to as the outlet of the condenser 200, and the second end of the evaporator 500 is referred to as the second end of the evaporator 500. The inlet of the evaporator 500, the first end of the evaporator 500 is referred to as the outlet of the evaporator 500, the first end of the heat exchanger 300 is referred to as the inlet of the heat exchanger 500, and the second end of the heat exchanger 300 is referred to as the inlet of the heat exchanger 300. At the outlet of heat exchanger 500, the first end of throttling element 400 is referred to as the outlet of throttling element 400, and the second end of throttling element 400 is referred to as the inlet of throttling element 400. It should be noted that in the two modes of cooling and heating, the flow direction of the refrigerant is completely opposite. The inlets and outlets of the various components (e.g., condenser 200, heat exchanger 300, throttling element 400, evaporator 500, etc.) are in the cooling mode for the flow direction of the refrigerant. Therefore, in the heating mode, the inlets and outlets of the various components are exactly opposite to the actual inlets and outlets (except for the compressor 100, whether in the cooling mode or the heating mode, the refrigerant enters from the inlet of the compressor 100) The compressor 100 is discharged from the outlet of the compressor 100). For example, in the cooling mode, the refrigerant enters the condenser 200 from the inlet of the condenser 200 and exits the condenser 200 from the outlet of the condenser 200. In the heating mode, the refrigerant enters the condenser 200 from the outlet of the condenser 200. The condenser 200 is removed from the inlet of the condenser 200.
具体而言，冷凝器 200的进口与第三开口 c相连。换热器 300的进口与冷凝器 200的出 口相连， 节流元件 400的进口与换热器 300的出口相连。蒸发器 500的进口与节流元件 400 的出口相连， 且蒸发器 500的出口与第四开口 d相连。 换言之， 换热器 300设在冷凝器 200 与节流元件 400之间。 其中， 所述室外机电控板邻近换热器 300， 以便利用换热器 300对所 述室外机电控板进行散热。  Specifically, the inlet of the condenser 200 is connected to the third opening c. The inlet of the heat exchanger 300 is connected to the outlet of the condenser 200, and the inlet of the throttle element 400 is connected to the outlet of the heat exchanger 300. The inlet of the evaporator 500 is connected to the outlet of the throttle element 400, and the outlet of the evaporator 500 is connected to the fourth opening d. In other words, heat exchanger 300 is disposed between condenser 200 and throttling element 400. The outdoor electromechanical control board is adjacent to the heat exchanger 300 to dissipate heat from the outdoor electromechanical control board by using the heat exchanger 300.
如图 1所示， 四通阀 600的第一开口 a可以与压縮机 100的出口相连， 四通阀 600的第 二开口 b可以与压縮机 100的进口相连， 四通阀 600的第三开口 c可以与冷凝器 200的进 口相连， 四通阀 600的第四开口 d可以与蒸发器 500的出口相连。 由此制冷*** 10即可以 进行制冷， 又可以进行制热。 也就是说， 制冷*** 10具有制冷和制热两个工作模式。  As shown in FIG. 1, the first opening a of the four-way valve 600 may be connected to the outlet of the compressor 100, and the second opening b of the four-way valve 600 may be connected to the inlet of the compressor 100, the fourth of the four-way valve 600 The three opening c may be connected to the inlet of the condenser 200, and the fourth opening d of the four-way valve 600 may be connected to the outlet of the evaporator 500. Thereby, the refrigeration system 10 can perform cooling and heating. That is to say, the refrigeration system 10 has two operating modes of cooling and heating.
当制冷*** 10处于制冷模式时， 此时四通阀 600的第一开口 a和第三开口 c导通， 第 二开口 b和第四开口 d导通， 如图 1中的实线箭头所示， 从压縮机 1的排气口 10排出的冷 媒通过四通阀 600进入到冷凝器 200内， 冷媒在冷凝器 200内冷凝散热， 冷凝散热后的冷 媒的温度下降至接近或略高于室外环境温度。 此时由于单向阀 700 不导通， 从冷凝器 200 排出的冷媒进入到换热器 300中， 进入到换热器 300中的冷媒对室外机电控板进行吸热降 温， 从换热器 300排出的冷媒进入到节流元件 400中节流， 从节流元件 400排出的冷媒进 入到蒸发器 500中， 进入到蒸发器 500中的冷媒对使用房间进行吸热降温， 最后从蒸发器 500排出的冷媒依次通过四通阀 600和吸气口 11排回到压縮机 1内， 完成制冷循环。  When the refrigeration system 10 is in the cooling mode, the first opening a and the third opening c of the four-way valve 600 are turned on, and the second opening b and the fourth opening d are turned on, as indicated by the solid arrows in FIG. The refrigerant discharged from the exhaust port 10 of the compressor 1 enters the condenser 200 through the four-way valve 600, and the refrigerant condenses and dissipates heat in the condenser 200, and the temperature of the refrigerant after condensation heat dissipation falls to near or slightly higher than the outdoor temperature. Ambient temperature. At this time, since the check valve 700 is not turned on, the refrigerant discharged from the condenser 200 enters the heat exchanger 300, and the refrigerant entering the heat exchanger 300 absorbs heat and cools the outdoor electromechanical control panel from the heat exchanger. The refrigerant discharged from the 300 enters the throttling element 400 to be throttled, the refrigerant discharged from the throttle element 400 enters the evaporator 500, and the refrigerant entering the evaporator 500 absorbs heat and cools the use room, and finally from the evaporator 500. The discharged refrigerant is sequentially discharged into the compressor 1 through the four-way valve 600 and the suction port 11, and the refrigeration cycle is completed.
制冷*** 10处于制热模式时， 此时四通阀 600中的第一开口 a和第四开口 d导通， 第 二开口 b和第三开口 c导通， 如图 1中的虚线箭头所示， 从压縮机 1的排气口 10排出的冷 媒通过四通阀 600排入到蒸发器 500中， 冷媒在蒸发器 500中冷凝散热以对使用房间进行 放热升温， 从蒸发器 500排出的冷媒进入到节流元件 400中进行节流。此时由于单向阀 700 导通， 从节流元件 400排出的冷媒大部分通过单向阀 700进入到冷凝器 200中， 流入到冷 凝器 200中的冷媒进行蒸发吸热以降低室外环境温度， 之后冷媒依次通过四通阀 600和吸 气口 11排回到压縮机 1内， 完成制热循环。  When the refrigeration system 10 is in the heating mode, the first opening a and the fourth opening d in the four-way valve 600 are turned on, and the second opening b and the third opening c are turned on, as indicated by the dotted arrows in FIG. The refrigerant discharged from the exhaust port 10 of the compressor 1 is discharged into the evaporator 500 through the four-way valve 600, and the refrigerant is condensed and radiated in the evaporator 500 to exotherm the use room, and is discharged from the evaporator 500. The refrigerant enters the throttling element 400 for throttling. At this time, since the check valve 700 is turned on, most of the refrigerant discharged from the throttle element 400 enters the condenser 200 through the check valve 700, and the refrigerant flowing into the condenser 200 evaporates and absorbs heat to lower the outdoor ambient temperature. Thereafter, the refrigerant is sequentially discharged into the compressor 1 through the four-way valve 600 and the suction port 11, and the heating cycle is completed.
在制冷*** 10处于制热运行时， 室外环境温度较低， 此时制热循环中只有很少冷媒或 者是无冷媒经过换热器 300， 防止低温冷媒将室外机电控板的温度降的过低， 可保证制冷系 统 10制热运行时室外机电控板的可靠性。 When the refrigeration system 10 is in heating operation, the outdoor ambient temperature is low, and there is only a small amount of refrigerant or even in the heating cycle. The non-refrigerant passes through the heat exchanger 300 to prevent the low temperature refrigerant from lowering the temperature of the outdoor electromechanical control panel, thereby ensuring the reliability of the outdoor electromechanical control panel during the heating operation of the refrigeration system 10.
根据本发明实施例的用于变频空调的制冷*** 10通过在冷凝器 200与节流元件 400之 间设置换热器 300， 从而在制冷模式时， 可以使温度接近或略高于环境温度的冷媒流过换热 器 300以便对所述室外机电控板进行散热。 由此可以在不降低压縮机 100的运转频率的情 况下有效地对所述室外机电控板进行散热 （即便是在环境温度较高的情况下）， 从而可以确 保变频空调在环境温度较高情况下的制冷效果， 提高用户使用舒适性。 而且， 由于流入换 热器 300 的冷媒的温度接近或略高于环境温度， 因此可以避免在所述室外机电控板上产生 凝露水和将所述室外机电控板的温度降的过低， 从而可以提高所述室外机电控板的可靠性 和安全性。 在制热模式时， 从节流元件 400排出的冷媒大部分通过单向阀 700排入到冷凝 器 200 中， 只有一小部分低温冷媒对室外机电控板进行散热， 在对室外机电控板降温的同 时又防止冷凝水产生， 可保证制冷*** 10制热运行时室外机电控板的可靠性。  The refrigeration system 10 for an inverter air conditioner according to an embodiment of the present invention can provide a refrigerant having a temperature close to or slightly higher than an ambient temperature by providing a heat exchanger 300 between the condenser 200 and the throttle element 400. The heat exchanger 300 is passed through to dissipate heat from the outdoor electromechanical control panel. Therefore, the outdoor electromechanical control panel can be effectively dissipated without lowering the operating frequency of the compressor 100 (even in the case of a high ambient temperature), thereby ensuring that the inverter air conditioner is at an ambient temperature. The cooling effect in high cases improves user comfort. Moreover, since the temperature of the refrigerant flowing into the heat exchanger 300 is close to or slightly higher than the ambient temperature, it is possible to avoid the generation of condensation water on the outdoor electromechanical control panel and the temperature drop of the outdoor electromechanical control panel. Low, so that the reliability and safety of the outdoor electrical control panel can be improved. In the heating mode, most of the refrigerant discharged from the throttling element 400 is discharged into the condenser 200 through the check valve 700, and only a small portion of the low-temperature refrigerant dissipates heat to the outdoor electromechanical control panel, and is electrically controlled to the outdoor. The plate is cooled while preventing the generation of condensed water, which can ensure the reliability of the outdoor electromechanical control board during the heating operation of the refrigeration system 10.
根据本发明实施例的变频空调通过设置制冷*** 10， 从而可以有效地对所述室外机电 控板进行散热， 且不会在所述室外机电控板上产生凝露水和将所述室外机电控板的温度降 的过低。 因此， 根据本发明实施例的变频空调具有制冷效率高、 性能好、 可靠性高、 安全 形高等优点。  The inverter air conditioner according to the embodiment of the present invention can effectively dissipate the outdoor electromechanical control board by providing the refrigeration system 10, and does not generate condensation water on the outdoor electromechanical control board and the outdoor environment The temperature drop of the electromechanical control board is too low. Therefore, the inverter air conditioner according to the embodiment of the invention has the advantages of high cooling efficiency, good performance, high reliability, high safety shape and the like.
在同一使用条件，与现有的变频空调相比，根据本发明实施例的变频空调的室外机电控 板的温度可以降低 15摄氏度以上， 压縮机 100的运行频率可以提高 20HZ。 当室外温度达到 35摄氏度以上时，根据本发明实施例的变频空调的制冷量比现有的变频空调的制冷量高 10% 以上。 当室外温度达到 45摄氏度以上时， 根据本发明实施例的变频空调的制冷量比现有的 变频空调的制冷量高 20%以上。  Under the same conditions of use, the temperature of the outdoor electromechanical control panel of the inverter air conditioner according to the embodiment of the present invention can be lowered by more than 15 degrees Celsius, and the operating frequency of the compressor 100 can be increased by 20 Hz compared with the existing inverter air conditioner. When the outdoor temperature reaches 35 degrees Celsius or more, the refrigeration capacity of the inverter air conditioner according to the embodiment of the present invention is more than 10% higher than that of the existing inverter air conditioner. When the outdoor temperature reaches 45 degrees Celsius or more, the refrigeration capacity of the inverter air conditioner according to the embodiment of the present invention is more than 20% higher than that of the conventional inverter air conditioner.
如图 1和图 2所示， 在本发明的一些实施例中， 单向阀 700具有第一阀口 710、 第二阀 口 720， 第三阀口 730和第四阀口 740， 第一阀口 710和第二阀口 720连通， 第三阀口 730 和第四阀口 740连通， 第一阀口 710和第四阀口 740在从第四阀口 740到第一阀口 710的 方向上导通且在从第一阀口 710到第四阀口 740的方向上截止。  As shown in FIGS. 1 and 2, in some embodiments of the present invention, the one-way valve 700 has a first valve port 710, a second valve port 720, a third valve port 730, and a fourth valve port 740, the first valve The port 710 is in communication with the second port 720, the third port 730 is in communication with the fourth port 740, and the first port 710 and the fourth port 740 are in the direction from the fourth port 740 to the first port 710. It is turned on and is turned off in the direction from the first valve port 710 to the fourth valve port 740.
具体地，单向阀 700内可以具有流体通道，单向阀 700的排出端可以设有与所述流体通 道连通的第一阀口 710和第二阀口 720，单向阀 700的进入端可以设有与所述流体通道连通 的第三阀口 730和第四阀口 740。 其中， 第一阀口 710可以与冷凝器 200的出口相连， 第二 阀口 720可以与换热器 300的进口相连， 第三阀口 730可以与换热器 300的出口相连， 第 四阀口 740可以与节流元件 400的进口相连。 由此在制热循环中只有少量的冷媒经过换热 器 300，从而可以避免在所述室外机电控板上产生凝露水或将所述室外机电控板的温度降的 过低。 其中， 需要说明的是， 附图中的单向阀 700的结构只是个示例性的说明， 单向阀 700 的结构不限于此， 单向阀 700还可为其他结构， 只要可以在从节流元件 400到冷凝器 200 的第二端的方向上单向导通即可。 Specifically, the one-way valve 700 may have a fluid passage therein, and the discharge end of the one-way valve 700 may be provided with a first valve port 710 and a second valve port 720 communicating with the fluid passage, and the inlet end of the one-way valve 700 may be A third valve port 730 and a fourth valve port 740 are provided in communication with the fluid passage. Wherein, the first valve port 710 may be connected to the outlet of the condenser 200, the second valve port 720 may be connected to the inlet of the heat exchanger 300, and the third valve port 730 may be connected to the outlet of the heat exchanger 300, the fourth valve port 740 can be coupled to the inlet of throttling element 400. Therefore, only a small amount of refrigerant passes through the heat exchanger 300 in the heating cycle, so that it is possible to avoid the generation of condensation water on the outdoor electromechanical control panel or to lower the temperature of the outdoor electromechanical control panel. It should be noted that the structure of the one-way valve 700 in the drawing is only an exemplary description, and the one-way valve 700 The configuration of the check valve 700 may be other structures as long as it can be unidirectionally guided in the direction from the throttle element 400 to the second end of the condenser 200.
具体而言， 当制冷*** 10处于制冷模式时， 从冷凝器 200排出的冷媒可以从第一阀口 710进入到所述流体通道内。 由于第一阀口 710位于单向阀 700的排出端， 第一阀口 710和 第二阀口 720导通， 第三阀口 730和第四阀口 740连通， 第一阀口 710和第四阀口 740在 从第一阀口 710到第四阀口 740的方向上截止。 因此冷媒不能从第三阀口 730和第四阀口 740流出， 冷媒只能从第二阀口 720流出， 进而进入到换热器 300内。 从换热器 300排出的 冷媒可以从第三阀口 730进入到所述流体通道内， 并从第四阀口 740排出。  Specifically, when the refrigeration system 10 is in the cooling mode, refrigerant discharged from the condenser 200 can enter the fluid passage from the first port 710. Since the first valve port 710 is located at the discharge end of the one-way valve 700, the first valve port 710 and the second valve port 720 are open, the third valve port 730 and the fourth valve port 740 are in communication, the first valve port 710 and the fourth port The valve port 740 is closed in a direction from the first valve port 710 to the fourth valve port 740. Therefore, the refrigerant cannot flow out from the third port 730 and the fourth port 740, and the refrigerant can only flow out from the second port 720 and further into the heat exchanger 300. The refrigerant discharged from the heat exchanger 300 can enter the fluid passage from the third valve port 730 and be discharged from the fourth valve port 740.
当制冷*** 10处于制热模式时， 由于第一阀口 710和第四阀口 740在从第四阀口 740 到第一阀口 710的方向上导通， 从节流元件 400排出的冷媒可以从第四阀口 740进入到所 述流体通道内， 并从第一阀口 710排出， 此时会有少量的冷媒从第三阀口 730和 /或第二阀 口 720进入到换热器 300内。  When the refrigeration system 10 is in the heating mode, since the first valve port 710 and the fourth valve port 740 are conducted in the direction from the fourth valve port 740 to the first valve port 710, the refrigerant discharged from the throttle element 400 may From the fourth valve port 740 into the fluid passage and from the first valve port 710, a small amount of refrigerant enters the heat exchanger 300 from the third valve port 730 and/or the second valve port 720. Inside.
有利地， 第二阀口 720的直径可以小于第一阀口 710的直径。 由此当制冷*** 10处于 制热模式时， 可以进一步减少进入到换热器 300 内的冷媒的量， 从而可以进一步避免在所 述室外机电控板上产生凝露水或将所述室外机电控板的温度降的过低。  Advantageously, the diameter of the second valve port 720 can be smaller than the diameter of the first valve port 710. Thus, when the refrigeration system 10 is in the heating mode, the amount of refrigerant entering the heat exchanger 300 can be further reduced, thereby further preventing the generation of condensation water on the outdoor electromechanical control panel or the outdoor unit. The temperature drop of the electric control board is too low.
在本发明的一个具体示例中， 制冷*** 10还可以包括控制器（图中未示出）。所述控制 器可以设在第二阀口 720与换热器 300的进口之间或者第三阀口 730与换热器 300的出口 之间。 当制冷*** 10处于制冷模式时， 可以打开所述控制器。 当制冷*** 10处于制热模 式时， 可以关闭所述控制器以便避免冷媒进入到换热器 300 内， 从而可以避免在所述室外 机电控板上产生凝露水或将所述室外机电控板的温度降的过低。  In a specific example of the present invention, the refrigeration system 10 may further include a controller (not shown). The controller may be disposed between the second port 720 and the inlet of the heat exchanger 300 or between the third port 730 and the outlet of the heat exchanger 300. The controller can be turned on when the refrigeration system 10 is in the cooling mode. When the refrigeration system 10 is in the heating mode, the controller can be turned off to prevent the refrigerant from entering the heat exchanger 300, thereby avoiding the generation of condensation water on the outdoor electromechanical control panel or the outdoor electromechanical The temperature drop of the control board is too low.
如图 3和图 4所示， 在本发明的一些示例中， 换热器 300可以包括散热管 310， 散热管 310的进口可以与冷凝器 200的出口相连且散热管 310的出口可以与节流元件 400的进口相 连。 由此换热器 300具有结构简单等优点。 在图 3和图 4的示例中， 散热管 310的第一端 与第二阀口 720相连， 散热管 310的第二端与第三阀口 730相连。  As shown in FIGS. 3 and 4, in some examples of the present invention, the heat exchanger 300 may include a heat pipe 310, the inlet of the heat pipe 310 may be connected to the outlet of the condenser 200, and the outlet of the heat pipe 310 may be throttled The inlets of component 400 are connected. Thus, the heat exchanger 300 has the advantages of a simple structure and the like. In the examples of Figs. 3 and 4, the first end of the heat pipe 310 is connected to the second port 720, and the second end of the heat pipe 310 is connected to the third port 730.
在本发明的一个示例中， 如图 3和图 4所示， 换热器 300还可以包括散热板 320， 散热 板 320具有彼此相对的第一表面和第二表面， 散热板 320的第一表面上可以设有第一凹槽 321。 其中， 散热管 310可以包括第一子段 311、 与第一子段 311的第一端相连的第二子段 312以及与第一子段 311的第二端相连的第三子段 313， 第一子段 311的一部分可以设在第 一凹槽 321内。 其中， 第二子段 312可以与冷凝器 200的出口相连， 第三子段 313可以与 节流元件 400的进口相连。通过设置散热板 320， 从而可以更加有效地对所述室外机电控板 进行散热。  In one example of the present invention, as shown in FIGS. 3 and 4, the heat exchanger 300 may further include a heat dissipation plate 320 having first and second surfaces opposite to each other, and a first surface of the heat dissipation plate 320 A first groove 321 may be provided thereon. The heat pipe 310 may include a first subsection 311, a second subsection 312 connected to the first end of the first subsection 311, and a third subsection 313 connected to the second end of the first subsection 311. A portion of a subsection 311 may be disposed within the first recess 321 . Wherein the second subsection 312 can be coupled to the outlet of the condenser 200 and the third subsection 313 can be coupled to the inlet of the throttle element 400. By providing the heat sink 320, the outdoor electromechanical control panel can be more efficiently dissipated.
有利地，第一子段 311的所述一部分的形状可以与第一凹槽 321的形状适配。第一子段 311可以是 U形， 由此可以延长冷媒的流动路径， 从而可以更加有效地对所述室外机电控板 进行散热。 第一子段 311、 第二子段 312和第三子段 313可以一体形成。 在本发明的具体示 例中， 如图 4所示， 散热管 310形成为 "U"形管， 第一凹槽 321形成为 "U"形槽。 Advantageously, the shape of the portion of the first subsection 311 can be adapted to the shape of the first recess 321 . First subsection The 311 may be U-shaped, thereby extending the flow path of the refrigerant, so that the outdoor electromechanical control panel can be more efficiently dissipated. The first subsection 311, the second subsection 312, and the third subsection 313 may be integrally formed. In a specific example of the present invention, as shown in FIG. 4, the heat pipe 310 is formed as a "U" shaped tube, and the first groove 321 is formed as a "U" shaped groove.
如图 3和图 4所示， 散热板 320的第二表面 322上可以设有凸台 323。 其中， 凸台 323 可以与所述室外机电控板上的 IPM (智能功率模块）、 桥堆等发热量大的元器件接触。 通过 在散热板 320的第二表面 322上设置凸台 323，从而可以更加有效地对所述室外机电控板进 行散热。 有利地， 所述室外机电控板上的 IPM (智能功率模块）、 桥堆等发热量大的元器件 可以排布在同一直线上。  As shown in FIGS. 3 and 4, a boss 323 may be disposed on the second surface 322 of the heat sink 320. The boss 323 can be in contact with a component having a large amount of heat such as an IPM (Intelligent Power Module) or a bridge stack on the outdoor electromechanical control board. By providing the boss 323 on the second surface 322 of the heat sink 320, the outdoor electromechanical control panel can be more efficiently dissipated. Advantageously, components such as IPM (Intelligent Power Module) and bridge stacks on the outdoor electrical control panel can be arranged on the same line.
如图 3和图 4所示， 在本发明的一个具体示例中， 换热器 300还可以包括固定板 330， 固定板 330的表面上可以设有第二凹槽 331。 其中， 固定板 330可以设在散热板 320上， 第 一子段 311的其余部分可以设在第二凹槽 331 内。 换言之， 第二凹槽 331可以与第一凹槽 321相对， 且第二凹槽 331与第一凹槽 321之间可以限定出容纳腔， 第一子段 311可以设在 该容纳腔内。 由此可以使换热器 300的结构更加合理、 稳固。  As shown in FIGS. 3 and 4, in a specific example of the present invention, the heat exchanger 300 may further include a fixing plate 330, and the surface of the fixing plate 330 may be provided with a second groove 331. The fixing plate 330 may be disposed on the heat dissipation plate 320, and the remaining portion of the first sub-section 311 may be disposed in the second groove 331. In other words, the second groove 331 may be opposite to the first groove 321 , and the receiving groove may be defined between the second groove 331 and the first groove 321 , and the first sub-section 311 may be disposed in the receiving cavity. Thereby, the structure of the heat exchanger 300 can be made more reasonable and stable.
在本说明书的描述中，参考术语"一个实施例"、 "一些实施例"、 "示例"、 "具体示例"、 或 "一些示例"等的描述意指结合该实施例或示例描述的具体特征、 结构、 材料或者特点 包含于本发明的至少一个实施例或示例中。 在本说明书中， 对上述术语的示意性表述不必 须针对的是相同的实施例或示例。 而且， 描述的具体特征、 结构、 材料或者特点可以在任 何的一个或多个实施例或示例中以合适的方式结合。 此外， 本领域的技术人员可以将本说 明书中描述的不同实施例或示例进行接合和组合。  In the description of the present specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like means a specific feature described in connection with the embodiment or example. A structure, material or feature is included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Further, various embodiments or examples described in the specification may be joined and combined by those skilled in the art.
尽管上面已经示出和描述了本发明的实施例， 可以理解的是， 上述实施例是示例性的， 不能理解为对本发明的限制， 本领域的普通技术人员在本发明的范围内可以对上述实施例 进行变化、 修改、 替换和变型。  Although the embodiments of the present invention have been shown and described, it is understood that the above described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The embodiments are subject to variations, modifications, substitutions and variations.

Claims

权利要求书 claims
1、 一种用于变频空调的制冷***， 其特征在于， 包括： 1. A refrigeration system for variable frequency air conditioners, characterized by including:
压縮机， 所述压縮机具有排气口和吸气口； A compressor, the compressor has an exhaust port and a suction port;
四通阀， 所述四通阀具有第一至第四开口， 所述第一开口与所述排气口相连， 所述第二 开口与所述吸气口相连； Four-way valve, the four-way valve has first to fourth openings, the first opening is connected to the exhaust port, and the second opening is connected to the suction port;
冷凝器， 所述冷凝器的第一端与所述第三开口相连； A condenser, the first end of the condenser is connected to the third opening;
蒸发器， 所述蒸发器的第一端与所述第四开口相连； Evaporator, the first end of the evaporator is connected to the fourth opening;
节流元件， 所述节流元件的第一端与所述蒸发器的第二端相连； A throttling element, the first end of the throttling element is connected to the second end of the evaporator;
冷却所述变频空调的室外机电控板的换热器，所述换热器连接在所述冷凝器的第二端与 所述节流元件的第二端之间； A heat exchanger for cooling the electric control panel of the outdoor unit of the variable frequency air conditioner, the heat exchanger being connected between the second end of the condenser and the second end of the throttling element;
单向阀，所述单向阀连接在所述冷凝器的第二端与所述节流元件的第二端之间，制冷时， 所述单向阀不导通， 冷媒从所述冷凝器流向所述节流元件时通过所述换热器； 制热时， 所 述单向阀导通， 冷媒从所述节流元件流向所述冷凝器时短路所述换热器。 One-way valve, the one-way valve is connected between the second end of the condenser and the second end of the throttling element. During cooling, the one-way valve is not conductive, and the refrigerant flows from the condenser When flowing to the throttling element, it passes through the heat exchanger; during heating, the one-way valve is turned on, and when the refrigerant flows from the throttling element to the condenser, it short-circuits the heat exchanger.
2、 根据权利要求 1所述的用于变频空调的制冷***， 其特征在于， 所述单向阀具有第 一阀口、 第二阀口， 第三阀口和第四阀口， 所述第一阀口和第二阀口连通， 所述第三阀口 和第四阀口连通， 所述第一阀口和所述第四阀口在从所述第四阀口到所述第一阀口的方向 上导通且在从所述第一阀口到所述第四阀口的方向上截止， 所述第一阀口与所述冷凝器的 第二端相连， 所述第二阀口与所述换热器的第一端相连， 所述第三阀口与所述换热器的第 二端相连， 所述第四阀口与所述节流元件的第二端相连。 2. The refrigeration system for variable frequency air conditioners according to claim 1, characterized in that the one-way valve has a first valve port, a second valve port, a third valve port and a fourth valve port, and the third valve port One valve port is connected to the second valve port, the third valve port is connected to the fourth valve port, and the first valve port and the fourth valve port are connected from the fourth valve port to the first valve port. The first valve port is connected to the second end of the condenser, and the second valve port is connected to the second end of the condenser. The third valve port is connected to the first end of the heat exchanger, the third valve port is connected to the second end of the heat exchanger, and the fourth valve port is connected to the second end of the throttling element.
3、 根据权利要求 2所述的用于变频空调的制冷***， 其特征在于， 所述第二阀口的直 径小于所述第一阀口的直径。 3. The refrigeration system for variable frequency air conditioning according to claim 2, characterized in that the diameter of the second valve port is smaller than the diameter of the first valve port.
4、 根据权利要求 1所述的用于变频空调的制冷***， 其特征在于， 所述换热器包括散 热管， 所述散热管的两端分别与所述冷凝器的第二端和所述节流元件的第二端相连。 4. The refrigeration system for variable frequency air conditioners according to claim 1, characterized in that the heat exchanger includes a heat dissipation pipe, and both ends of the heat dissipation pipe are respectively connected to the second end of the condenser and the second end of the condenser. The second end of the throttling element is connected.
5、 根据权利要求 4所述的用于变频空调的制冷***， 其特征在于， 所述换热器还包括 散热板， 所述散热板具有彼此相对的第一表面和第二表面， 所述散热板的第一表面上设有 第一凹槽， 所述散热管设在所述第一凹槽内。 5. The refrigeration system for variable frequency air conditioning according to claim 4, characterized in that the heat exchanger further includes a heat sink plate, the heat sink plate has a first surface and a second surface opposite to each other, and the heat dissipation plate A first groove is provided on the first surface of the board, and the heat dissipation pipe is arranged in the first groove.
6、 根据权利要求 5所述的用于变频空调的制冷***， 其特征在于， 所述散热板的第二 表面上设有凸台。 6. The refrigeration system for an inverter air conditioner according to claim 5, characterized in that a boss is provided on the second surface of the heat dissipation plate.
7、 根据权利要求 5所述的用于变频空调的制冷***， 其特征在于， 所述换热器还包括 固定板， 所述固定板上设有第二凹槽， 所述固定板设在所述散热板上， 所述第二凹槽和所 述第一凹槽配合以限定出用于容纳所述散热管的容纳腔。 7. The refrigeration system for variable frequency air conditioners according to claim 5, characterized in that the heat exchanger further includes a fixed plate, the fixed plate is provided with a second groove, and the fixed plate is located at the On the heat dissipation plate, the second groove and the first groove cooperate to define an accommodation cavity for accommodating the heat dissipation pipe.
8、 根据权利要求 5所述的用于变频空调的制冷***， 其特征在于， 所述散热管形成为 "U"形管。 8. The refrigeration system for variable frequency air conditioners according to claim 5, characterized in that the heat dissipation pipe is formed into a "U" shaped pipe.
9、 根据权利要求 8所述的用于变频空调的制冷***， 其特征在于， 所述第一凹槽形成 为 "U"形凹槽。 9. The refrigeration system for inverter air conditioners according to claim 8, wherein the first groove is formed into a "U" shaped groove.
10、 一种变频空调， 其特征在于， 包括： 10. A variable frequency air conditioner, characterized by including:
制冷***， 所述制冷***为根据权利要求 1-9 中任一项所述的用于变频空调的制冷系 统； Refrigeration system, the refrigeration system is a refrigeration system for variable frequency air conditioning according to any one of claims 1-9;
室外机电控板， 所述室外机电控板邻近所述换热器设置。 An outdoor unit electrical control panel is provided adjacent to the heat exchanger.
PCT/CN2014/070490 2013-08-27 2014-01-10 Refrigerating system for variable frequency air conditioner, and variable frequency air conditioner having refrigerating system WO2015027677A1 (en)

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