EP4397932A1 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
EP4397932A1
EP4397932A1 EP24150443.0A EP24150443A EP4397932A1 EP 4397932 A1 EP4397932 A1 EP 4397932A1 EP 24150443 A EP24150443 A EP 24150443A EP 4397932 A1 EP4397932 A1 EP 4397932A1
Authority
EP
European Patent Office
Prior art keywords
heat exchange
main
auxiliary
exchange unit
refrigerant
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP24150443.0A
Other languages
German (de)
English (en)
Inventor
Jiwon Choi
Yohan Lee
Taegyun PARK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Publication of EP4397932A1 publication Critical patent/EP4397932A1/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0417—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with particular circuits for the same heat exchange medium, e.g. with the heat exchange medium flowing through sections having different heat exchange capacities or for heating/cooling the heat exchange medium at different temperatures
    • 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
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/18—Heat exchangers specially adapted for separate outdoor units characterised by their shape
    • 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
    • F25B39/04—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • F28D1/0435—Combination of units extending one behind the other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/007—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0243—Header boxes having a circular cross-section

Definitions

  • the conventional heat exchanger includes an upper header 2 located above a lower header 1 so as to correspond thereto, a plurality of tubes 3 located between the upper header 2 and the lower header 1, and fins 6 located between the tubes 3.
  • the lower header 1 is formed in the shape of a cylinder having a cavity formed therein, and a plurality of header holes 4, into which the tubes 3 are fixedly inserted, is formed in one side of the outer circumferential portion of the lower header 1, which defines the external appearance of the lower header 1, in the longitudinal direction of the lower header 1 so as to be spaced apart from each other at regular intervals.
  • the upper header 2 which is located above the lower header 1 so as to correspond thereto, has the same shape as the lower header 1.
  • the tubes 3 are arranged parallel to each other in the longitudinal direction of the headers 1 and 2 in such a manner that both end portions of each of the tubes 3 in the longitudinal direction are fixed to the respective header holes 4.
  • Each of the fins 6 is formed in the shape of a plate that has a small thickness and is bent several times in a zigzag pattern, and is mounted between the tubes 3.
  • the fins 6 may be fixed in any of various shapes. However, it is preferable to secure a space so as to minimize air flow resistance.
  • the tubes and the fins are provided in multiple rows. However, as the number of rows of the tubes and the fins increases, air resistance increases, and heat exchange efficiency decreases.
  • a heat exchanger includes a main heat exchange unit configured to perform heat exchange between refrigerant and air and to define a first heat exchange surface and an auxiliary heat exchange unit configured to perform heat exchange between refrigerant discharged from the main heat exchange unit and air and to define a second heat exchange surface, wherein the first heat exchange surface has an area larger than the area of the second heat exchange surface.
  • the area of the second heat exchange surface may be 40% to 60% of the area of the first heat exchange surface.
  • the second heat exchange surface may have a width identical to the width of the first heat exchange surface and may have a height different from the height of the first heat exchange surface.
  • a portion of the main heat exchange unit may be located so as to overlap the auxiliary heat exchange unit in a first direction, and the upper end of the auxiliary heat exchange unit may be located at a lower height than the upper end of the main heat exchange unit.
  • the heat exchanger may further include an air introduction hole formed to allow air to be introduced thereinto, and the auxiliary heat exchange unit may be located closer to the air introduction hole than the main heat exchange unit.
  • the first heat exchange surface of the main heat exchange unit may be disposed in multiple rows in the first direction.
  • the main heat exchange unit may include a plurality of main refrigerant tubes formed to allow refrigerant to flow therethrough, a plurality of main fins disposed between the plurality of main refrigerant tubes adjacent to each other in order to conduct heat, a first main header coupled to one side of each of the plurality of main refrigerant tubes and formed to allow refrigerant to flow therethrough, and a second main header coupled to the opposite side of each of the plurality of main refrigerant tubes and formed to allow refrigerant to flow therethrough.
  • the first heat exchange surface may be defined by the plurality of main refrigerant tubes and the plurality of main fins.
  • the auxiliary heat exchange unit may include a plurality of auxiliary refrigerant tubes formed to allow refrigerant to flow therethrough, a plurality of auxiliary fins disposed between the plurality of auxiliary refrigerant tubes adjacent to each other in order to conduct heat, a first auxiliary header coupled to one side of each of the plurality of auxiliary refrigerant tubes and formed to allow refrigerant to flow therethrough, and a second auxiliary header coupled to the opposite side of each of the plurality of auxiliary refrigerant tubes and formed to allow refrigerant to flow therethrough.
  • spatially-relative terms such as “below”, “beneath”, “lower”, “above”, or “upper” may be used herein to describe one element's relationship to another element as illustrated in the Figures. It will be understood that spatially-relative terms are intended to encompass different orientations of the device in addition to the orientation depicted in the Figures. For example, if the device in one of the figures is turned over, elements described as “below” or “beneath” other elements would then be oriented “above” the other elements. The exemplary terms “below” or “beneath” can, therefore, encompass both an orientation of above and below. Since the device may be oriented in another direction, the spatially-relative terms may be interpreted in accordance with the orientation of the device.
  • the refrigerant condensed by the outdoor heat exchanger 11 may flow to the expansion device 12, and may be expanded by the expansion device 12.
  • the refrigerant expanded by the expansion device 12 may exchange heat with indoor air while passing thorough the indoor heat exchanger 13, with the result that the refrigerant may be evaporated.
  • the refrigerant circulates through a refrigeration cycle constituted by the compressor 10, the outdoor heat exchanger 11, the expansion device 12, and the indoor heat exchanger 13.
  • a compressor suction channel may be connected to the compressor 10 in order to guide the refrigerant, having passed through the indoor heat exchanger 13, to the compressor 10.
  • An accumulator 14 configured to accumulate liquid refrigerant may be mounted in the compressor suction channel.
  • An indoor fan 16 may be mounted in the indoor unit I in order to blow indoor air to the indoor heat exchanger 13.
  • FIG. 3 is a perspective view of the outdoor heat exchanger shown in FIG. 2
  • FIG. 4 is a plan view of the outdoor heat exchanger shown in FIG. 3 .
  • the main heat exchange unit 110 and the auxiliary heat exchange unit 120 are manufactured by stacking a plurality of refrigerant tubes.
  • the main heat exchange unit 110 and the auxiliary heat exchange unit 120 are formed such that the refrigerant tubes are disposed horizontally in order to allow the refrigerant to move horizontally.
  • the main refrigerant tubes 51 are disposed so as to be elongated in the lateral direction. Channels, through which the refrigerant flows, are formed in the main refrigerant tubes 51.
  • the main refrigerant tubes 51 are disposed horizontally, and the plurality of main refrigerant tubes 51 is stacked in the upward-downward direction.
  • a plurality of channels may be formed in the main refrigerant tubes 51.
  • One introduction pipe 22 or a plurality of introduction pipes 22 may be connected to the first main header 111.
  • the refrigerant that has passed through the first main header 111 flows to the second main header 112 via the main refrigerant tubes 51, and the refrigerant introduced into the second main header 112 is supplied to the auxiliary heat exchange unit 120 through the connection pipe 26.
  • main heat exchange unit 110 has been described above as being disposed in a single row, the main heat exchange unit 110 may be disposed in multiple rows in the forward-backward direction, which is a first direction, as shown in FIG. 3 .
  • a second main header 112a of the first main heat exchange unit 110a and a second main header 112b of the second main heat exchange unit 110b may be connected to each other via a first main connection pipe 25-1
  • a first main header 111b of the second main heat exchange unit 110b and a first main header 111c of the third main heat exchange unit 110c may be connected to each other via a second main connection pipe 25-2
  • a second main header 112c of the third main heat exchange unit 110c and the second auxiliary header 122 may be connected to each other via the connection pipe 26.
  • a first main header 111a of the first main heat exchange unit 110a is connected to the introduction pipe 22.
  • the auxiliary heat exchange unit 120 may include a plurality of auxiliary refrigerant tubes 52, auxiliary fins 62, a first auxiliary header 121, and a second auxiliary header 122.
  • the auxiliary heat exchange unit 120 includes a plurality of auxiliary refrigerant tubes 52 having a plurality of channels formed therein, auxiliary fins 62 interconnecting the auxiliary refrigerant tubes 52 in order to conduct heat, a first auxiliary header 121 coupled to one side of each of the plurality of auxiliary refrigerant tubes 52 and communicating with one side of each of the plurality of auxiliary refrigerant tubes 52 in order to allow the refrigerant to flow therethrough, and a second auxiliary header 122 coupled to the other side of each of the plurality of auxiliary refrigerant tubes 52 and communicating with the other side of each of the plurality of auxiliary refrigerant tubes 52 in order to allow the refrigerant to flow therethrough.
  • the auxiliary refrigerant tubes 52 are disposed so as to be elongated in the lateral direction. Channels, through which the refrigerant flows, are formed in the auxiliary refrigerant tubes 52.
  • the auxiliary refrigerant tubes 52 are disposed horizontally, and the plurality of auxiliary refrigerant tubes 52 is stacked in the upward-downward direction.
  • a plurality of channels may be formed in the auxiliary refrigerant tubes 52.
  • auxiliary refrigerant tubes 52 communicate with the first auxiliary header 121, and the left sides thereof communicate with the second auxiliary header 122.
  • the auxiliary fins 62 are formed so as to be bent in the upward-downward direction. Each of the auxiliary fins 62 interconnects two adjacent ones of the auxiliary refrigerant tubes 52, which are stacked in the upward-downward direction, to conduct heat.
  • One discharge pipe 24 or a plurality of discharge pipes 24 may be connected to the first auxiliary header 121.
  • the second auxiliary header 122 communicates with the other side of each of the plurality of auxiliary refrigerant tubes 52.
  • the second auxiliary header 122 is disposed so as to be elongated in the upward-downward direction and is connected to the connection pipe 26.
  • the second auxiliary header 122 has a single space defined therein to supply the refrigerant supplied through the connection pipe 26 to the plurality of auxiliary refrigerant tubes 52.
  • connection pipe 26 or a plurality of connection pipes 26 may be connected to the second auxiliary header 122.
  • the refrigerant that is discharged from the compressor 10 and is heat-exchanged in the main heat exchange unit 110 is in a high-temperature and high-pressure gaseous state, and thus has a large specific volume.
  • the refrigerant that is heat-exchanged in the auxiliary heat exchange unit 120 after being heat-exchanged in the main heat exchange unit 110 is in a gaseous or gas-liquid mixed state, the temperature of which is lower than that of the refrigerant in the main heat exchange unit 110. Therefore, the specific volume of the refrigerant that is heat-exchanged in the auxiliary heat exchange unit 120 is smaller than that of the refrigerant that is heat-exchanged in the main heat exchange unit 110.
  • the heat exchange amount and heat exchange efficiency in the main heat exchange unit 110 is greatly reduced due to the large specific volume of the refrigerant in the main heat exchange unit 110.
  • FIG. 5 is a front view of the main heat exchange unit 110 shown in FIG. 3
  • FIG. 6 is a front view of the auxiliary heat exchange unit 120 shown in FIG. 3 .
  • the main heat exchange unit 110 may define a first heat exchange surface P1
  • the auxiliary heat exchange unit 120 may define a second heat exchange surface P2.
  • the first heat exchange surface P1 may refer to an area defined by the main refrigerant tubes 51 and the main fins 61.
  • the first heat exchange surface P1 may have a first height H1 and a first width L1.
  • the second heat exchange surface P2 may refer to an area defined by the auxiliary refrigerant tubes 52 and the auxiliary fins 62.
  • the second heat exchange surface P2 may have a second height H2 and a second width L2.
  • the area of the first heat exchange surface P1 may be larger than the area of the second heat exchange surface P2.
  • the area of the second heat exchange surface P2 is smaller than the area of the first heat exchange surface P1
  • the area of the second heat exchange surface P2 may be 40% to 60% of the area of the first heat exchange surface P1.
  • the second width L2 of the second heat exchange surface P2 may be equal to the first width L1 of the first heat exchange surface P1, and the second height H2 of the second heat exchange surface P2 may be different from the first height H1 of the first heat exchange surface P1. Therefore, the positions of the headers of the main heat exchange unit 110 and the auxiliary heat exchange unit 120 may be shared, whereby manufacture thereof is facilitated.
  • a portion of the main heat exchange unit 110 may be located so as to overlap the auxiliary heat exchange unit 120 in the first direction (forward-backward direction), and the upper end of the auxiliary heat exchange unit 120 may be located at a lower height than the upper end of the main heat exchange unit 110. In this case, the lower end of the auxiliary heat exchange unit 120 and the lower end of the main heat exchange unit 110 may be located at the same height.
  • the number of first heat exchange surfaces may be greater than the number of second heat exchange surfaces.
  • the first heat exchange surfaces may be disposed in multiple rows, and the second heat exchange surfaces may be disposed in a single row.
  • the auxiliary heat exchange unit 120 does not shield the middle and upper portions of the main heat exchange unit 110, in which an air flow amount is relatively large, and thus air resistance is reduced.
  • a spacing distance between the main refrigerant tubes 51 and the auxiliary refrigerant tubes 52 may be less than the width of the main refrigerant tubes 51.
  • the plurality of auxiliary fins may be located so as to overlap the plurality of main fins in the first direction.
  • the plurality of auxiliary refrigerant tubes may be located so as to overlap the plurality of main refrigerant tubes in the first direction. Due to such placement, air flow resistance is reduced, and heat exchange efficiency is improved.
  • FIG. 7 is a view showing the flow of refrigerant in the outdoor heat exchanger shown in FIG. 3 .
  • the refrigerant compressed in the compressor 10 flows to the first main heat exchange unit 1 10a, the refrigerant in the first main heat exchange unit 110a flows to the second main heat exchange unit 110b, the refrigerant in the second main heat exchange unit 110b flows to the third main heat exchange unit 110c, the refrigerant in the third main heat exchange unit 110c flows to the auxiliary heat exchange unit 120, and the refrigerant in the auxiliary heat exchange unit 120 is discharged outside through the discharge pipe 24.
  • the heat exchanger of the present disclosure has one or more effects as follows.
  • an auxiliary heat exchange unit is disposed separately from a main heat exchange unit and the area of the heat exchange surface of the auxiliary heat exchange unit is set to be smaller than the area of the heat exchange surface of the main heat exchange unit, air resistance increases little while air passes through the auxiliary heat exchange unit having a relatively small area, the flow amount of air that has passed through the auxiliary heat exchange unit is increased, and the flow amount of air to be supplied to the main heat exchange unit is increased.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Geometry (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP24150443.0A 2023-01-06 2024-01-04 Echangeur de chaleur Pending EP4397932A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020230002329A KR20240110353A (ko) 2023-01-06 2023-01-06 열교환기

Publications (1)

Publication Number Publication Date
EP4397932A1 true EP4397932A1 (fr) 2024-07-10

Family

ID=89474443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24150443.0A Pending EP4397932A1 (fr) 2023-01-06 2024-01-04 Echangeur de chaleur

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Country Link
US (1) US20240230237A1 (fr)
EP (1) EP4397932A1 (fr)
KR (1) KR20240110353A (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0643278A2 (fr) * 1989-08-23 1995-03-15 Showa Aluminum Kabushiki Kaisha Evaporateur pour refroidisseurs dans les véhicules automobiles
KR20040053551A (ko) 2002-12-17 2004-06-24 엘지전자 주식회사 마이크로채널 열교환기
US20120102974A1 (en) * 2010-11-03 2012-05-03 Denso Corporation Air conditioner for vehicle
US20210131749A1 (en) * 2017-01-25 2021-05-06 Lg Electronics Inc. Heat exchanger of refrigerator
WO2021234956A1 (fr) * 2020-05-22 2021-11-25 三菱電機株式会社 Échangeur de chaleur, unité extérieure et dispositif à cycle de réfrigération
WO2021234958A1 (fr) * 2020-05-22 2021-11-25 三菱電機株式会社 Échangeur de chaleur, unité extérieure équipée d'un échangeur de chaleur, et conditionneur d'air équipé d'une unité extérieure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0643278A2 (fr) * 1989-08-23 1995-03-15 Showa Aluminum Kabushiki Kaisha Evaporateur pour refroidisseurs dans les véhicules automobiles
KR20040053551A (ko) 2002-12-17 2004-06-24 엘지전자 주식회사 마이크로채널 열교환기
US20120102974A1 (en) * 2010-11-03 2012-05-03 Denso Corporation Air conditioner for vehicle
US20210131749A1 (en) * 2017-01-25 2021-05-06 Lg Electronics Inc. Heat exchanger of refrigerator
WO2021234956A1 (fr) * 2020-05-22 2021-11-25 三菱電機株式会社 Échangeur de chaleur, unité extérieure et dispositif à cycle de réfrigération
WO2021234958A1 (fr) * 2020-05-22 2021-11-25 三菱電機株式会社 Échangeur de chaleur, unité extérieure équipée d'un échangeur de chaleur, et conditionneur d'air équipé d'une unité extérieure

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