WO2019103495A1 - Climatiseur - Google Patents

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Publication number
WO2019103495A1
WO2019103495A1 PCT/KR2018/014468 KR2018014468W WO2019103495A1 WO 2019103495 A1 WO2019103495 A1 WO 2019103495A1 KR 2018014468 W KR2018014468 W KR 2018014468W WO 2019103495 A1 WO2019103495 A1 WO 2019103495A1
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WO
WIPO (PCT)
Prior art keywords
pipe
refrigerant
liquid
heat exchange
gas
Prior art date
Application number
PCT/KR2018/014468
Other languages
English (en)
Korean (ko)
Inventor
하정훈
김성호
진근호
Original Assignee
엘지전자 주식회사
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 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to DE112018005940.5T priority Critical patent/DE112018005940T5/de
Publication of WO2019103495A1 publication Critical patent/WO2019103495A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F24F1/30—Refrigerant piping for use inside the separate outdoor units
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/028—Evaporators having distributing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/26—Refrigerant piping
    • F24F1/32—Refrigerant piping for connecting the separate outdoor units to indoor units
    • 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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/40—Fluid line arrangements
    • F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/04—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/04—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases
    • F25B43/043—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases for compression type systems
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • 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
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/02—Details of evaporators

Definitions

  • the present invention relates to an air conditioner.
  • the air conditioner is a device for keeping the air in a predetermined space in a most suitable condition according to the purpose of use and purpose.
  • the air conditioner includes a compressor, a condenser, an expansion device, and an evaporator, and a refrigerant cycle for compressing, condensing, expanding, and evaporating the refrigerant is driven to cool or heat the predetermined space.
  • the predetermined space may be variously suggested according to the place where the air conditioner is used.
  • the predetermined space may be an indoor space of a house or a building.
  • the predetermined space may be a boarding space on which a person is boarded.
  • the air conditioner includes an indoor unit installed in the predetermined space and an outdoor unit supplying refrigerant to the indoor unit.
  • the air conditioner may operate in a cooling operation or a heating operation depending on the flow of the refrigerant.
  • the cooling operation or the heating operation of the air conditioner is determined according to the flow of circulating refrigerant.
  • the refrigerant compressed in the compressor installed in the outdoor unit becomes the liquid refrigerant through the outdoor heat exchanger functioning as the condenser.
  • the refrigerant expands in the indoor heat exchanger functioning as the evaporator, and vaporization may occur.
  • the temperature of the ambient air of the indoor heat exchanger is lowered by the vaporization phenomenon.
  • the indoor unit fan rotates ambient air of the indoor heat exchanger whose temperature is lowered is discharged to the predetermined space, so that the predetermined space can be cooled.
  • the high-temperature and high-pressure gas refrigerant in the indoor heat exchanger serving as the condenser is liquefied .
  • the energy released by the liquefaction phenomenon raises the temperature of the ambient air of the indoor heat exchanger.
  • the indoor fan is rotated, the surrounding air of the indoor heat exchanger whose temperature is raised is discharged to the predetermined space, and the predetermined space is heated.
  • the liquefied refrigerant may be introduced into the outdoor heat exchanger which is expanded in the main expansion device and then functions as an evaporator, and may be vaporized.
  • the indoor heat exchanger and the outdoor heat exchanger function as a condenser or an evaporator and are heat-exchanged.
  • the evaporator serves to evaporate the liquid refrigerant and change the phase of the liquid refrigerant into the gas refrigerant.
  • the applicant of the present invention has studied the technique for increasing the heat exchange efficiency of the evaporator and filed and filed the following documents.
  • a gas-liquid separator is provided on the suction side of the evaporator, the liquid refrigerant separated from the gas-liquid separator flows to the evaporator, and the gas refrigerant flows to the compressor.
  • the present invention provides an air conditioner in which a refrigerant provided to the evaporator is separated into a gaseous refrigerant and a liquid refrigerant and flows uniformly in each pass formed in the evaporator.
  • the air conditioner according to the present invention includes a compressor, a condenser, an expansion valve, and an evaporator.
  • the air conditioner includes a gas-liquid separator for separating the refrigerant introduced from the expansion valve into liquid refrigerant and gas refrigerant, A liquid pipe connecting the gas-liquid separator and the evaporator so that the separated liquid refrigerant flows, and a gas pipe connecting the gas-liquid separator and the evaporator such that the gas refrigerant separated from the gas-liquid separator flows, A plurality of heat exchange pipes through which the refrigerant flows, and the liquid pipe and the pipe pipe are provided in a number corresponding to the plurality of heat exchange pipes.
  • the gas-liquid separator is provided with a refrigerant inlet and a refrigerant outlet, each of which is provided in the form of a pipe through which a refrigerant flows.
  • One end of the refrigerant inlet is coupled to one side of the refrigerant outlet, Lt; / RTI >
  • the diameter of the refrigerant discharge portion may be larger than the diameter of the refrigerant inflow portion.
  • the refrigerant discharge portion may be disposed perpendicular to the bottom surface, and the refrigerant inflow portion may be disposed to form a predetermined inclination (c) with the bottom surface.
  • the predetermined inclination (c) may be 30 degrees or more and 45 degrees or less.
  • the refrigerant discharge portion is composed of a first refrigerant discharge portion located at a lower portion and a second refrigerant discharge portion positioned at an upper portion with respect to a portion connected to the refrigerant inflow portion, and the liquid pipe is connected to the first refrigerant discharge portion And the gas pipe may be connected to the second refrigerant discharge portion.
  • the heat exchange pipe includes a first heat exchange pipe, a second heat exchange pipe and a third heat exchange pipe
  • the liquid pipe includes a first liquid pipe connected to the first heat exchange pipe, a second liquid pipe connected to the second heat exchange pipe, And a third liquid pipe connected to the third heat exchange pipe, wherein the first pipe is connected to the first heat exchange pipe, and the second pipe is connected to the second heat exchange pipe, And a third pipe connected to the third heat exchange pipe.
  • the first liquid pipe and the refrigerant flowing in the first pipe are heat-exchanged and the second liquid pipe and the refrigerant flowing in the second pipe are heat-exchanged in the second heat exchange pipe
  • the third heat exchange pipe is heat exchanged with the refrigerant flowing in the third liquid pipe and the third pipe, and the refrigerant discharged from the first to third heat exchange pipes may be connected to the compressor.
  • the same amount of refrigerant flows into the first liquid pipe, the second liquid pipe, and the third liquid pipe, and the same amount of refrigerant flows into the first, second, and third pipe .
  • the refrigerant flows in a predetermined ratio to the first liquid pipe, the second liquid pipe and the third liquid pipe, and the refrigerant flows to the first pipe, the second pipe and the third pipe at a predetermined ratio Can flow.
  • the refrigerant flows to at least one of the first liquid pipe, the second liquid pipe and the third liquid pipe, and the refrigerant flows to at least one of the first pipe, the second pipe and the third pipe .
  • the second refrigerant discharge portion may be provided with a gas-liquid pipe for shielding the refrigerant flowing through the pipe.
  • the evaporator may be an outdoor heat exchanger.
  • the refrigerant may be R32.
  • the liquid refrigerant and the gaseous refrigerant are uniformly distributed to the plurality of paths provided in the evaporator, thereby improving the heat exchange efficiency of the evaporator.
  • the refrigerant since the refrigerant is separated into the liquid refrigerant and the gas refrigerant, and each piping is connected to the evaporator, the refrigerant can be more evenly distributed.
  • FIG. 1 is a view illustrating an indoor unit and an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along line I-I 'of FIG.
  • FIG 3 is an exploded view of an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • FIG. 4 is a schematic view illustrating a refrigerant flow in an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • FIG. 5 is a view illustrating a refrigerant flow in a gas-liquid separator and an evaporator of an air conditioner according to an embodiment of the present invention.
  • FIG. 6 is a view illustrating a gas-liquid separator of an air conditioner according to an embodiment of the present invention.
  • FIG. 7 is a view showing a control configuration of an air conditioner according to an embodiment of the present invention.
  • FIG. 1 is a view illustrating an indoor unit and an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • an air conditioner includes an indoor unit 1 installed in a predetermined space for providing cooling or heating, and an outdoor unit connected to the indoor unit 1 to form a refrigeration cycle 10 are provided.
  • the indoor unit 1 is installed in an indoor space
  • the outdoor unit 10 is installed in an outdoor space.
  • FIG. 1 the indoor unit 1 and the outdoor unit 10 are shown together for convenience of description.
  • the indoor unit (1) and the outdoor unit (10) can be connected to a refrigerant pipe through which refrigerant flows.
  • the refrigerant flowing into the air conditioner according to the present invention may correspond to R32.
  • the R32 refrigerant has attracted attention as a highly efficient eco-friendly refrigerant capable of achieving high efficiency with a relatively small amount.
  • the indoor unit 1 and the outdoor unit 10 may be provided in various forms.
  • FIG. 2 is a cross-sectional view taken along line I-I 'of FIG.
  • the indoor unit 1 may correspond to a wall-mounted indoor unit attached to a wall of an indoor space.
  • the wall-mounted type indoor unit is generally used in the home and corresponds to a relatively small capacity.
  • the indoor unit 1 is provided with a case 1a which forms an outer appearance and in which an indoor heat exchanger 4 and an indoor air blowing fan 3 are disposed and a case 1a connected to the front of the case 1a, And a front panel 1b that forms a front appearance.
  • the front panel 1b can be understood as a constitution of the case 1a.
  • the case 1a includes a discharge port 5 through which the indoor air is introduced and the air introduced through the suction port 2 is heat-exchanged and discharged into the indoor space.
  • the suction port (2) is formed at least a part of the upper portion of the case (1a).
  • a suction grille 2a for preventing the inflow of foreign matter may be formed in the suction port 2.
  • the discharge port 5 may be formed by opening at least a part of the lower portion of the case 1a.
  • a discharge vane 5a is provided at one side of the discharge port 5 so as to be movable for opening or closing the discharge port 5.
  • the discharge vane 5a When the discharge vane 5a is opened, harmonized air can be discharged into the indoor space in the case 1a.
  • the discharge vane 5a may be opened by rotating the lower portion of the discharge vane 5a upward.
  • the discharge port 5 may be provided with a discharge grill (not shown).
  • An indoor heat exchanger (4) is installed in the case (1a) for heat exchange with the air sucked from the suction port (2).
  • the indoor heat exchanger (4) is disposed so as to surround the suction side of the indoor blowing fan (3). That is, the indoor heat exchanger 4 may be formed by bending a plurality of the indoor heat exchangers 4.
  • the indoor air blowing fan (3) includes a cross flow fan for discharging the air sucked in the circumferential direction in the circumferential direction.
  • the indoor air blowing fan 3 includes a fan body 3a as a fixing member and a plurality of blades 3b fixed to one side of the fan body 3a and spaced apart in the circumferential direction. That is, the plurality of blades 3b are arranged along the circumferential direction.
  • the flow guides 8 and 9 include a rear guide 8 and a stabilizer 9.
  • the rear guide (8) extends from the rear side of the case (1a) to the suction side of the indoor blowing fan (3).
  • the rear guide 8 guides the intake air to the indoor ventilation fan 3 smoothly when the indoor ventilation fan 3 is rotated. Further, the rear guide 8 can prevent the air flowing by the indoor air blowing fan 3 from peeling off from the indoor air blowing fan 3.
  • the stabilizer (9) is disposed on the discharge side of the indoor air blowing fan (3).
  • the stabilizer 9 is spaced apart from the outer circumferential surface of the indoor air blowing fan 3 to prevent the air discharged from the indoor air blowing fan 3 from flowing back to the indoor heat exchanger 4 side.
  • the rear guide 8 and the stabilizer 9 extend along the longitudinal direction of the indoor air blowing fan 3.
  • a drain portion 6 is provided below the indoor heat exchanger 4 to store condensed water generated during heat exchange between air and refrigerant.
  • a filter (7) for filtering foreign matter in the air sucked through the suction port (2) is provided in the case (1a).
  • the filter (7) is arranged to surround the indoor heat exchanger (4) inside the suction port (2).
  • the air filtered by the filter (7) can flow to the indoor heat exchanger (4) side.
  • the shape of the indoor unit 1 is an example, and the indoor unit 1 may have various shapes.
  • FIG 3 is an exploded view of an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • an outdoor unit 10 of an air conditioner according to an embodiment of the present invention is arranged to exchange heat with outdoor air.
  • the outdoor unit (10) includes a case which forms an appearance and contains a large number of parts.
  • the case includes a front panel 11, a rear panel 12, an upper panel 13, and side panels 14 and 15.
  • the front panel 11 constitutes a front surface of the outdoor unit 10 and a front discharge port 11a through which air is discharged to the outside of the outdoor unit 10 is provided.
  • the rear panel 12 is spaced rearward from the front panel 11 so as to form an inner space of the outdoor unit 10. Also, the rear panel 12 is provided with a rear suction port 12a through which air is sucked into the outdoor unit 10.
  • the side panels constitute both side surfaces of the outdoor unit 10 and include a left panel 14 and a right panel 15.
  • the left panel 14 and the right panel 15 are coupled to the front panel 11 and the rear panel 12 to form an internal space of the outdoor unit 10.
  • the left panel 14 and the right panel 15 are provided with side suction ports 14a and 15a, respectively.
  • the upper panel 13 is coupled to the upper portions of the front panel 11, the rear panel 12 and the side panels 14 and 15 so as to constitute the upper surface of the outdoor unit 10.
  • the case further includes a base 17 constituting the lower surface of the outdoor unit 10. As the lower surface of the base 17 is fixed to the installation position, the outdoor unit 10 can be fixed to the installation position.
  • the outdoor unit 10 is formed with an inner space surrounded by the case, and a compressor or the like to be described later may be disposed in the inner space. That is, the compressor or the like may be mounted on the upper surface of the base 17.
  • the outdoor unit (10) is provided with the suction ports (12a, 14a, 15a) for sucking outdoor air and the discharge port (11a) through which the sucked air is discharged.
  • the discharge port 11a may be formed in the front of the case, and the suction ports 12a, 14a, and 15a may be formed on the rear or side of the case.
  • this is merely an example, and the discharge port and the suction port may be formed in various forms and may be located at various positions.
  • the outdoor unit (10) may further include a service panel (16) that covers an electric room including a compressor and the like.
  • the service panel 16 may be formed to be rounded to one side from the front surface of the outdoor unit 10.
  • the service panel 16 may be rounded from the front to the right of the outdoor unit 10, and one end of the service panel 16 is fastened to the right end of the front panel 11 , And the other end of the service panel 16 can be fastened to the front end of the right panel 15.
  • the service panel 16 is provided as one panel, and can open and close the front and the side at the same time, so that the installer or the manager can easily access the electric room.
  • the service panel 16 may include a service window and a service cover 16a.
  • the service window is an opening through the service panel 16, and the service cover 16a is installed to open and close the service window.
  • the service window may be formed so as to correspond to a display unit that allows the user to determine and operate the state of the outdoor unit 10. [ At this time, since the display unit is exposed to the outside through the service window, the installer can remove the service panel 16 and remove only the service cover 16a to check the state of the outdoor unit 10. [
  • the service window may be provided on a side surface of the outdoor unit 10. That is, the service cover 16a may be provided on the side surface of the outdoor unit 10, and may be provided on the right side of the service panel 16 as shown in FIGS. 2 and 3, for example.
  • the service window is disposed on the side surface of the outdoor unit 10 so that even when the outdoor unit 10 is disposed in a narrow space such as a veranda or a wall of a building and is difficult to access the front side, It is possible to grasp the state of the outdoor unit 10 through a service window installed in the outdoor unit 10.
  • the outdoor unit 10 may further include a partition wall 18 extending upward from the base 17 to divide the interior space into a heat exchange chamber and an electric compressor chamber.
  • the separating wall 18 prevents the moisture in the heat exchange chamber from penetrating into the electric field chamber.
  • the separating wall 18 is a plate extending in the vertical direction, and one end thereof may be coupled to the upper surface of the base 17.
  • the separating wall 18 may be formed in a curved surface so as to correspond to the arrangements disposed in the electric field chamber.
  • the heat exchange chamber is a space in which the outdoor heat exchanger 24 and the outdoor air blowing fan 32 are disposed and the refrigerant passing through the outdoor heat exchanger 24 and the outdoor air flowing by the outdoor air blowing fan 32 It is a space where heat exchange takes place.
  • the outdoor heat exchanger 24 exchanges heat between the outside air and the refrigerant, and functions as a condenser when the air conditioner performs cooling operation and as an evaporator when the air conditioner performs heating operation.
  • the outdoor heat exchanger (24) may include a heat exchange pipe through which refrigerant flows, and a heat exchange fin that enlarges the heat exchange appearance between the refrigerant and the air.
  • the outdoor air blowing fan 32 is connected to the motor 31 and the motor mount 33 so that the air inside the outdoor unit 10 can be forcedly convected.
  • the outdoor air blowing fan 32 is coupled to the rotating shaft of the motor 31 and can be rotated according to the driving of the motor 31.
  • the motor 31 may be coupled to and supported by the motor mount 33. That is, the motor mount 33 can support the motor 31 and the outdoor blowing fan 32 coupled to the motor 31.
  • the motor mount 33 is understood to be a structure formed between the base 17 and the upper panel 13. Therefore, one end of the motor mount 33 is fastened to the upper surface of the base 17, and the other end is disposed adjacent to the lower surface of the upper panel 13.
  • the motor 31 and the outdoor blowing fan 32 may be fastened to the front surface of the motor mount 33. Particularly, the motor 31 and the outdoor blowing fan 32 can be fastened at positions corresponding to the front discharge port 11a.
  • the outdoor air blowing fan 32 is rotated by the motor 31 to generate air flow. Air sucked through the inlets (12a, 14a, 15a) provided on the rear and side surfaces of the outdoor unit (10) passes through the outdoor heat exchanger (24) and performs heat exchange with the refrigerant. The air having passed through the outdoor heat exchanger (24) is discharged to the outside of the outdoor unit (10) through the front discharge port (11a).
  • the outdoor air flowing in this way and the refrigerant flowing through the outdoor heat exchanger (24) can be heat-exchanged.
  • the electric room is a space in which the compressor (21) and the front section (22) are located.
  • the compressor (21) is fixed to the base (18) to compress the refrigerant.
  • the compressor 21 may be provided with various shapes and various compression methods.
  • the compressor 21 may be a reciprocating compressor that compresses the refrigerant while linearly reciprocating the piston in the cylinder so that a compression space in which the working gas is sucked or discharged is formed between the piston and the cylinder.
  • the front portion 22 may be positioned above the electric field chamber to prevent the penetration of moisture.
  • the controller 22 may be provided with a controller for controlling various configurations of the air conditioner.
  • various devices may be further provided in the inner space of the outdoor unit 10.
  • the shape of the outdoor unit 10 is an example, and the outdoor unit 10 may have various shapes.
  • the flow of the refrigerant flowing into the outdoor unit (10) will be described in detail with reference to the apparatus provided in the outdoor unit (10).
  • FIG. 4 is a schematic view illustrating a refrigerant flow in an outdoor unit of an air conditioner according to an embodiment of the present invention.
  • FIG. 4 shows only a part of the structure described above to show the flow of the refrigerant, and a refrigerant pipe connecting the components is schematically shown.
  • the refrigerant pipe extending to the outside of the outdoor unit 10 for connection with the indoor unit 1 is omitted.
  • the outdoor unit (10) is provided with the compressor (21) and the outdoor heat exchanger (24).
  • the outdoor unit 10 is provided with a main expansion unit 27, an accumulator 26, a flow switching unit 25, an oil separator (not shown), a gas-liquid separator 100 and a plurality of refrigerant pipes.
  • the main expansion device (27) is configured to expand the liquid refrigerant in the high-temperature and high-pressure state condensed in the condenser to the liquid refrigerant in the low-pressure state.
  • the main expansion device 27 may include an electric expansion valve (EEV).
  • the main expansion device 27 is provided to change the opening rate. At this time, the opening amount can be controlled in a pulse unit, and the opening amount of the main expansion device 27 can be changed within a predetermined range.
  • the increase in the opening amount means that the valve is opened
  • the decrease in the opening amount means that the valve is closed. Also, when the opening amount is increased, the amount of refrigerant flowing increases, and when the opening amount is decreased, the amount of refrigerant flowing can be reduced.
  • the accumulator 26 is disposed before the refrigerant flows into the compressor 21, that is, at the inlet side of the compressor 21 to separate the gaseous refrigerant.
  • the gaseous refrigerant separated from the accumulator (26) flows into the compressor (21).
  • the flow switching unit 25 is disposed at the outlet side of the compressor 21 and switches the direction of the refrigerant discharged from the compressor 21. That is, the flow switching unit 25 causes the refrigerant to flow toward the outdoor heat exchanger 24 or the indoor unit in accordance with the cooling operation and the heating operation.
  • the flow switching unit 25 may be provided as a four-way valve.
  • the oil separator is disposed at the outlet side of the compressor (21) and separates oil from the refrigerant discharged from the compressor (21).
  • the gas-liquid separator 100 is disposed on the suction side of the evaporator, and can separate the refrigerant flowing into the gas refrigerant and the liquid refrigerant. As shown in FIG. 4, the gas-liquid separator 100 is disposed on one side of the outdoor heat exchanger 24. In particular, when the outdoor heat exchanger 24 functions as an evaporator, it is disposed on the suction side of the outdoor heat exchanger 24.
  • the gas-liquid separator 100 allows both the separated gas refrigerant and the liquid refrigerant to flow to the evaporator.
  • the refrigerant flowing into the outdoor heat exchanger 24 can be separated into gas refrigerant and liquid refrigerant and supplied to the outdoor heat exchanger 24. This will be described in detail later.
  • the plurality of refrigerant pipes are provided with refrigerant pipes through which respective components are connected to flow the refrigerant.
  • each refrigerant pipe is divided into a first pipe to a sixth pipe.
  • the first pipe 40 is connected to the main expansion device 27 and extends to the indoor unit.
  • the second pipe 42 connects the main expansion device 27 and the outdoor heat exchanger 24 Refrigerant piping.
  • the gas-liquid separator 100 is installed in the second pipe 42. That is, as described above, the gas-liquid separator 100 can also be understood as at least a part of the second pipe 42.
  • the third pipe 44 is a refrigerant pipe connecting the outdoor heat exchanger 24 and the flow switching unit 25 and the fourth pipe 46 passes through the accumulator 26, (25) and the suction side of the compressor (21). At this time, the accumulator (26) is installed in the fourth pipe (46).
  • the fifth pipe 48 is a refrigerant pipe connecting the discharge side of the compressor 21 and the flow switching unit 25.
  • the sixth pipe 50 is connected to the indoor unit It is an extended refrigerant piping.
  • Cooling operation corresponds to a case where cool air is supplied to the indoor space in which the indoor unit 1 is installed, and the outdoor heat exchanger 24 functions as a condenser.
  • the indoor heat exchanger (4) disposed in the indoor unit (1) functions as an evaporator and can supply cold air to the indoor space.
  • the low-temperature and low-pressure refrigerant evaporated in the indoor heat exchanger (4) flows into the outdoor unit (10) through the sixth pipe (50).
  • the flow switching unit 25 connects the sixth piping 50 and the fourth piping 46 so that the refrigerant flows into the compressor 21 through the accumulator 26.
  • the refrigerant discharged from the compressor (21) at high temperature and high pressure flows along the fifth pipe (48) and the third pipe (44).
  • the refrigerant is condensed in the outdoor heat exchanger 24 functioning as a condenser and flows into the indoor unit along the second pipe 42 and the first pipe 40 so as to be circulated as described above.
  • the main expansion device 27 may not have any influence on the refrigerant being completely opened and flowing.
  • the gas-liquid separator 100 functions as one refrigerant pipe through which the refrigerant flows.
  • the air conditioner according to the present invention performs the heating operation
  • the flow of the refrigerant is indicated by a solid line arrow in FIG.
  • the heating operation corresponds to a case of supplying warm air to the indoor space in which the indoor unit 1 is installed, and the outdoor heat exchanger 24 functions as an evaporator.
  • the indoor heat exchanger (4) disposed in the indoor unit (1) functions as a condenser and can supply warmth to the predetermined space.
  • the refrigerant condensed in the indoor unit (1) flows into the outdoor unit (10) through the first pipe (40).
  • the refrigerant is expanded in the main expansion device 27 and flows along the second pipe 42 to the outdoor heat exchanger 24 through the gas-liquid separator 100.
  • the outdoor heat exchanger (24) exchanges heat between the refrigerant flowing through the gas-liquid separator (100) and outdoor air to evaporate the refrigerant.
  • the evaporated refrigerant flows along the third pipe 44 to the flow switching unit 25 and the flow switching unit 25 connects the third pipe 44 and the fourth pipe 46 . That is, different pipes are connected to the cooling mode.
  • the refrigerant passes through the accumulator (26) along the fourth pipe (46) and flows into the compressor (21).
  • the refrigerant discharged from the compressor 21 at a high temperature and a high pressure flows into the fifth pipe 48 and flows along the sixth pipe 50 in the flow switching unit 25.
  • the refrigerant may flow into the indoor unit along the sixth pipe 50 and may be circulated as described above.
  • 5 is a view illustrating a refrigerant flow in a gas-liquid separator and an evaporator of an air conditioner according to an embodiment of the present invention.
  • 5 shows the flow of the refrigerant when the air conditioner is in the heating operation, that is, when the outdoor heat exchanger 24 functions as the evaporator.
  • 6 is a view showing a gas-liquid separator of an air conditioner according to an embodiment of the present invention.
  • the refrigerant that has passed through the expansion valve 27 flows into the gas-liquid separator 100, and flows from the gas-liquid separator 100 to the outdoor heat exchanger 24, as shown in FIG. Further, the refrigerant passing through the outdoor heat exchanger (24) may flow into the compressor (21).
  • the gas-liquid separator 100 includes a refrigerant inlet 102 and a refrigerant outlet 104, 106. At this time, the refrigerant inlet portion 102 is connected to the expansion valve 27, and the refrigerant discharge portions 104 and 106 are connected to the outdoor heat exchanger 24.
  • the refrigerant inlet portion 102 and the refrigerant outlet portions 104 and 106 are provided in the form of a pipe provided with a space through which the refrigerant flows. Accordingly, the coolant inlet portion 102 and the coolant outlet portions 104 and 106 have diameters, respectively.
  • the diameter of the refrigerant inlet portion 102 is a and the diameter of the refrigerant outlet portion 104, 106 is b.
  • a corresponds to a value smaller than b. That is, the refrigerant discharging portions 104 and 106 are formed to have a larger diameter than the refrigerant inflow portion 102.
  • a may be provided at 6.35 mm or more, and b may be provided at 23 mm or less. This is not an exemplary value considering the actual design such as the kind of refrigerant, the flow rate, etc., and any value greater than b is not relevant.
  • the refrigerant discharging units 104 and 106 are provided to extend in a direction perpendicular to the bottom surface.
  • the refrigerant discharge portions 104 and 106 may be arranged to extend in the gravity direction.
  • the refrigerant inflow portion 102 is connected to one side of the refrigerant discharge portions 104 and 106 so that the inside is communicated. Further, the coolant inflow portion 102 is installed to be inclined by a c angle with respect to the bottom surface. At this time, c may be 30 degrees or more and 45 degrees or less.
  • the gas-liquid separator 100 and the main expansion device 27 are shown separated from each other in order to illustrate the flow direction of the refrigerant.
  • the refrigerant introduction part 102 may be formed in the main expansion device 27) and the refrigerant discharge portions (104, 106).
  • one end of the refrigerant inlet portion 102 is coupled to the refrigerant outlet portion 104, 106, and the other end is connected to the main expansion device 27.
  • the length of the refrigerant inlet 102 may be d.
  • d may be understood as the length of the refrigerant flowing from the main expansion device 27 to the refrigerant discharge portions 104 and 106. At this time, d may be 160 mm or more.
  • the refrigerant discharge portion includes a first refrigerant discharge portion 104 positioned at a lower portion and a second refrigerant discharge portion 106 positioned at an upper portion with respect to a portion connected to the refrigerant inlet portion 102.
  • the refrigerant flowing through the expansion valve 27 flows through the refrigerant inlet 102 and flows into the refrigerant outlet 104 and the refrigerant discharging unit 106 through the gas-liquid separator 100. At this time, the gas refrigerant flows upwardly by gravity, and the liquid refrigerant can flow downward.
  • the liquid refrigerant flows into the first refrigerant discharge portion 104, and the gas refrigerant flows into the second refrigerant discharge portion 106.
  • the gas refrigerant may actually flow into the first refrigerant discharge part 104 or the liquid refrigerant may flow into the second refrigerant discharge part 106, but this is negligible.
  • the gas-liquid separator 100 can separate the refrigerant into the gas refrigerant and the liquid refrigerant.
  • the refrigerant is more easily separated. That is, the refrigerant can be separated into a gas refrigerant and a liquid refrigerant in a process of flowing from a narrow space to a wide space and expanding its volume.
  • d means a length enough to allow the refrigerant to be well separated into gas and liquid. For example, if the length d is too small, the flow rate of the refrigerant at the refrigerant discharge portions 104 and 106 may be too fast to be separated.
  • c means an angle at which the flow rate of the refrigerant can be made relatively large. For example, if the c is provided at an excessively large angle, the refrigerant flows at a relatively high speed and the liquid refrigerant can be moved close to the inside of the refrigerant inlet portion 102. Therefore, there is a possibility that the refrigerant may flow upward when it reaches the refrigerant discharging sections 104 and 106.
  • the separated gas refrigerant and liquid refrigerant flow into the outdoor heat exchanger (24).
  • the pipe through which the liquid refrigerant flows is referred to as a liquid pipe 110
  • the pipe through which the gas refrigerant flows is referred to as a pipe pipe 120.
  • the gas pipe 120 may be provided with a gas-liquid valve 130. This is to prevent the refrigerant from flowing into the pipe 120 during the cooling operation of the air conditioner. In addition, during the heating operation of the air conditioner, the gas-liquid valve 130 can block the flow of the refrigerant to the gas pipe 120.
  • the gas-liquid valve 130 may be opened to allow refrigerant to flow into the pipe 120.
  • the gas-liquid valve 130 may be opened and the refrigerant may flow into the pipe 120.
  • liquid pipe 110 and the pipe 120 may be provided.
  • the liquid pipe 110 and the pipe 120 are provided in the same number and correspond to the number of passes of the outdoor heat exchanger 24.
  • the outdoor heat exchanger 24 may include heat exchange pipes 242, 244, and 246 through which refrigerant flows, and a heat exchange fin 240 that expands a heat exchange area between the refrigerant and the air.
  • the heat exchange pipe is composed of a plurality of heat exchange pipes through which refrigerant flows.
  • the heat exchange pipe includes a first heat exchange pipe 242, a second heat exchange pipe 244, and a third heat exchange pipe 246.
  • the number of such heat exchange pipes is an exemplary one and may be provided in various numbers.
  • the first liquid pipe 112 connected to the first heat exchange pipe 242 and the second liquid pipe 114 connected to the second heat exchange pipe 244 are connected to the liquid pipe 110, And a third liquid pipe 116 connected to the third heat exchange pipe 246.
  • the first pipe 122 connected to the first heat exchange pipe 242 and the second pipe 124 connected to the second heat exchange pipe 244 are connected to the pipe 120, And a third pipe 126 connected to the third heat exchange pipe 246.
  • the liquid pipes 112, 114, and 116 and the pipe pipes 122, 124, and 126 may be connected to the heat exchange pipes 242, 244, and 246, respectively.
  • the joint portions where the liquid pipes 112, 114, and 116 and the pipe pipes 122, 124, and 126 are joined are disposed outside the heat exchange pipes 242, 244, and 246 And may be the inside of the heat exchange pipes 242, 244, and 246.
  • each of the heat exchange pipes 242, 244 and 246 is connected to the liquid pipes 112, 114 and 116 and the pipe pipes 122, 124 and 126, respectively.
  • the other end of the heat exchange pipes 242, 244 and 246 is connected to the third pipe 44.
  • Liquid refrigerant flows to the liquid pipe 110 along the first refrigerant discharge portion 104 of the gas-liquid separator 100.
  • the liquid refrigerant is divided into the first liquid pipe 112, the second liquid pipe 114 and the third liquid pipe 116 to be discharged to the first heat exchange pipe 242, the second heat exchange pipe 244 and the third heat exchange pipe 246, respectively.
  • the gas refrigerant flows to the gas pipe 120 along the second refrigerant discharge portion 106 of the gas-liquid separator 100.
  • the gas refrigerant is divided into the first gas pipe 122, the second gas pipe 124 and the third gas pipe 126 to be supplied to the first heat exchange pipe 242, the second heat exchange pipe 244 and the third heat exchange pipe 246, respectively.
  • the refrigerant heat-exchanged in the first heat exchange pipe 242, the second heat exchange pipe 244 and the third heat exchange pipe 246 is discharged and connected to the compressor 21 along the third pipe 44, Lt; / RTI >
  • FIG. 7 is a view showing a control configuration of an air conditioner according to an embodiment of the present invention.
  • the air conditioner according to the present invention includes a control unit 150 for controlling the respective components.
  • the configuration shown in FIG. 7 is illustrative and the configuration controlled by the controller 150 is not limited thereto.
  • the controller 150 may control the driving of the compressor 21, the opening of the main expansion device 27, and the like.
  • the load can be adjusted by driving the compressor 21, or information on the load can be stored.
  • the flow rate of the refrigerant can be adjusted through the main expansion device 27, or information on the flow rate can be stored.
  • the controller 150 may control the gas-liquid valve 130. As described above, the controller 150 may open the gas-liquid valve 130 under the conditions such as a low flow rate and a low load during a heating operation.
  • the controller 150 may control the same amount of the refrigerant to flow through the first liquid pipe 112, the second liquid pipe 114, and the third liquid pipe 116. Also, it is possible to control the same amount of refrigerant to flow through the first, second, and third pipes 122, 124, and 126.
  • the refrigerant flow as described above may be provided on the hardware (device) side and may be controlled by the controller 150.
  • the same amount of liquid refrigerant and gas refrigerant can flow through the first heat exchange pipe 242, the second heat exchange pipe 244 and the third heat exchange pipe 246, respectively. Accordingly, efficient heat exchange is performed in the first heat exchange pipe 242, the second heat exchange pipe 244 and the third heat exchange pipe 246, and the evaporation efficiency of the outdoor heat exchanger 24 is improved .
  • the heat exchange efficiency is improved as the liquid refrigerant and the gas refrigerant are equally distributed to the respective heat exchange pipes 242, 244, and 246 under a low refrigerant flow rate or a low load condition. That is, the liquid refrigerant and the gas refrigerant can be equally divided by the gas-liquid separator 100 to prevent the refrigerant from leaking due to gravity or the like.
  • the control unit 150 may control the refrigerant to flow to at least one of the first to third liquid pipes 112, 114 and 116 or the first to third pipe units 122, 124 and 126. For example, when the flow rate of the refrigerant is very small, the third liquid pipe 116 and the third pipe 126 are controlled so that the refrigerant does not flow.
  • the refrigerant may not flow into the third heat exchange pipe 246. That is, when the flow rate of the refrigerant is very small, heat exchange can be controlled to occur only in a part of the outdoor heat exchanger (24).
  • the controller 150 may control the refrigerant to flow to the first to third liquid pipes 112, 114, and 116 or the first to third pipes 122, 124, and 126 at a predetermined ratio .
  • heat exchange efficiency of each of the heat exchange pipes 242, 244, and 246 may be different depending on the type of the outdoor unit installed.
  • a larger amount of refrigerant can be flowed into the first heat exchange pipe 242, assuming that the heat exchange efficiency of the first heat exchange pipe 242 is higher than the heat exchange efficiency of the other heat exchange pipes 244 and 246.
  • the proportions of the liquid refrigerant and the gas refrigerant in each piping can be controlled differently if necessary.
  • Such control can be realized by a valve or the like provided in each pipe.
  • the valve may be a flow control valve.

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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)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Other Air-Conditioning Systems (AREA)

Abstract

La présente invention concerne un climatiseur. Le climatiseur selon le concept de la présente invention est un climatiseur comportant un compresseur, un condenseur, un détendeur et un évaporateur, et comprend en outre : un séparateur gaz/liquide pour séparer un réfrigérant, alimenté à travers le détendeur, en un réfrigérant en phase liquide et un réfrigérant en phase gazeux; des tuyaux de liquide pour relier le séparateur gaz/liquide et l'évaporateur de façon à permettre au réfrigérant en phase liquide séparé par le séparateur gaz/liquide de s'écouler à travers celui-ci; et des tuyaux de gaz pour raccorder le séparateur gaz/liquide et l'évaporateur de façon à permettre au réfrigérant en phase gazeux séparé par le séparateur gaz/liquide de s'écouler à travers celui-ci, l'évaporateur comprenant une pluralité de tuyaux d'échange de chaleur à travers lesquels les réfrigérants respectifs circulent, et les tuyaux de liquide et les tuyaux de gaz sont chacun prévus pour correspondre en nombre au nombre de la pluralité de tuyaux d'échange de chaleur.
PCT/KR2018/014468 2017-11-22 2018-11-22 Climatiseur WO2019103495A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112018005940.5T DE112018005940T5 (de) 2017-11-22 2018-11-22 Klimaanlage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0156543 2017-11-22
KR1020170156543A KR20190059026A (ko) 2017-11-22 2017-11-22 공기조화기

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112628890A (zh) * 2020-12-21 2021-04-09 青岛海尔空调电子有限公司 热泵系统及空调器

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Publication number Priority date Publication date Assignee Title
JP2001033111A (ja) * 1999-07-19 2001-02-09 Fujitsu General Ltd 空気調和機
JP3216469B2 (ja) * 1995-02-10 2001-10-09 ダイキン工業株式会社 空気調和機用蒸発器
JP2002195671A (ja) * 2000-12-27 2002-07-10 Fujitsu General Ltd 多室形空気調和機
JP2002243183A (ja) * 2001-02-20 2002-08-28 Fujitsu General Ltd 空気調和機
KR20120122690A (ko) * 2011-04-29 2012-11-07 엘지전자 주식회사 기액분리기 및 이를 포함하는 공기조화기

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Publication number Priority date Publication date Assignee Title
KR101615445B1 (ko) 2014-08-14 2016-04-25 엘지전자 주식회사 공기 조화기

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3216469B2 (ja) * 1995-02-10 2001-10-09 ダイキン工業株式会社 空気調和機用蒸発器
JP2001033111A (ja) * 1999-07-19 2001-02-09 Fujitsu General Ltd 空気調和機
JP2002195671A (ja) * 2000-12-27 2002-07-10 Fujitsu General Ltd 多室形空気調和機
JP2002243183A (ja) * 2001-02-20 2002-08-28 Fujitsu General Ltd 空気調和機
KR20120122690A (ko) * 2011-04-29 2012-11-07 엘지전자 주식회사 기액분리기 및 이를 포함하는 공기조화기

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112628890A (zh) * 2020-12-21 2021-04-09 青岛海尔空调电子有限公司 热泵系统及空调器

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