WO2018128035A1 - 室外機、および冷凍サイクル装置 - Google Patents

室外機、および冷凍サイクル装置 Download PDF

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Publication number
WO2018128035A1
WO2018128035A1 PCT/JP2017/043255 JP2017043255W WO2018128035A1 WO 2018128035 A1 WO2018128035 A1 WO 2018128035A1 JP 2017043255 W JP2017043255 W JP 2017043255W WO 2018128035 A1 WO2018128035 A1 WO 2018128035A1
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WO
WIPO (PCT)
Prior art keywords
heat transfer
heat
outdoor unit
heat exchange
side holding
Prior art date
Application number
PCT/JP2017/043255
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
大木　長斗司
修平 多田
法福　守
遠藤　剛
Original Assignee
日立ジョンソンコントロールズ空調株式会社
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 日立ジョンソンコントロールズ空調株式会社 filed Critical 日立ジョンソンコントロールズ空調株式会社
Priority to CN201780035599.4A priority Critical patent/CN109312935B/zh
Publication of WO2018128035A1 publication Critical patent/WO2018128035A1/ja
Priority to US16/223,341 priority patent/US20190120556A1/en

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    • 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
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05333—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • 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
    • 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
    • F24F1/16—Arrangement or mounting thereof
    • 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
    • F28D1/05316—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05325—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
    • 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
    • F28D1/05358—Assemblies of conduits connected side by side or with individual headers, e.g. section type radiators
    • 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
    • F28F1/325—Fins with openings
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0131—Auxiliary supports for elements for tubes or tube-assemblies formed by plates
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0132—Auxiliary supports for elements for tubes or tube-assemblies formed by slats, tie-rods, articulated or expandable rods
    • 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
    • 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
    • F28F2009/0285—Other particular headers or end plates
    • F28F2009/0297—Side headers, e.g. for radiators having conduits laterally connected to common header
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/12—Fins with U-shaped slots for laterally inserting conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/04—Reinforcing means for conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/04—Means for preventing wrong assembling of parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/06—Adapter frames, e.g. for mounting heat exchanger cores on other structure and for allowing fluidic connections

Definitions

  • the present invention relates to an outdoor unit having a heat exchanger and a refrigeration cycle apparatus.
  • a heat exchanger of a type in which a heat transfer tube penetrates heat transfer fins stacked at a predetermined interval is known.
  • Such a type of heat exchanger has a header collecting pipe and a heat transfer fin, rather than a distance (fin pitch) between the heat transfer fin and the heat transfer fin in a heat exchange section composed of a heat transfer pipe and a heat transfer fin.
  • the interval of becomes wide When the interval between the header collecting pipe and the heat transfer fins increases, air passes between the header collecting pipe and the heat transfer fins rather than the heat exchange unit.
  • the present invention has been made in view of the above, and the performance degradation of the heat exchanger generated by the air flowing between the header collecting pipe and the fins, and the prevention of corrosion and fixing the heat exchanger to the housing,
  • An object of the present invention is to provide an outdoor unit and a refrigeration cycle apparatus that can be compatible at low cost.
  • an outdoor unit and a refrigeration cycle apparatus are configured by a flat tube having a substantially oval cross section, and are arranged in a vertical direction while being arranged along a horizontal direction.
  • a heat exchanging portion having a plurality of heat transfer tubes arranged substantially in parallel with an interval, and a plurality of heat transfer fins joined to the heat transfer tubes, and opposed to each other substantially in parallel in the vertical direction
  • a heat exchanger that includes a pair of header collecting pipes that bundle the ends of the heat transfer pipes that extend from the heat exchange part, and a housing that supports the heat exchanger via a support bracket.
  • An outdoor unit wherein the support bracket is located at a portion of the heat transfer tube that connects the heat exchanging portion and the header collecting pipe, and the heat exchange side holding portion through which each heat transfer tube passes, and the heat exchange side holding Upstream end located on the upstream side of the air flow passing through the heat exchanger in the section And extending along the longitudinal direction of the heat transfer tube, and provided integrally with the housing side holding portion fixed to the housing, the heat exchange side holding portion, or the housing side holding portion, and A fin contact portion disposed in contact with or adjacent to an edge portion adjacent to the header collecting pipe in the heat exchanging portion.
  • an outdoor unit and a refrigeration cycle apparatus that can achieve both the restriction of the air flow between the header collecting pipe and the heat transfer fin and the fixing of the heat exchanger to the housing at a low cost. Can be provided.
  • FIG. 1 shows an air conditioner S as a refrigeration cycle apparatus in which the heat exchanger fixing structure of the present invention is employed.
  • the air conditioner S includes an outdoor unit 1 and an indoor unit 2.
  • the outdoor unit 1 includes an accumulator 5, a compressor 6, a four-way valve 7, an outdoor heat exchanger 8, an outdoor expansion valve 9, and an outdoor blower 10.
  • the indoor unit 2 includes an indoor heat exchanger 12, an indoor blower 13, and an indoor expansion valve 14.
  • Each device of the outdoor unit 1 and each device of the indoor unit 2 are connected by a refrigerant pipe 3 to form a refrigeration cycle.
  • a refrigerant as a heat medium is sealed in the refrigerant pipe 3, and the refrigerant circulates between the outdoor unit 1 and the indoor unit 2 through the refrigerant pipe 3.
  • the accumulator 5 is provided to store the liquid return at the time of transition, and separates the liquid refrigerant mixed in the gas refrigerant supplied to the compressor 6 to adjust the refrigerant to an appropriate dryness.
  • the compressor 6 compresses and discharges the sucked gaseous refrigerant (gas refrigerant).
  • the four-way valve 7 switches the direction of the refrigerant flow between the outdoor unit 1 and the indoor unit 2 without changing the direction of the refrigerant flow to the compressor 6 by switching between a solid line path and a broken line path. Change.
  • the four-way valve 7 switches between the cooling operation and the heating operation by changing the direction of the refrigerant flow.
  • the outdoor heat exchanger 8 is supported by the casing 20 (see FIG. 2) of the outdoor unit 1 by a support structure described later, and performs heat exchange between the refrigerant and outdoor outdoor air.
  • the outdoor expansion valve 9 is a throttle valve that adiabatically expands and vaporizes a liquid refrigerant (liquid refrigerant).
  • the outdoor blower 10 supplies outside air to the outdoor heat exchanger 8.
  • the indoor heat exchanger 12 performs heat exchange between the refrigerant and the indoor air.
  • the indoor blower 13 supplies room air to the indoor heat exchanger 12.
  • the indoor expansion valve 14 is a throttle valve that adiabatically expands and vaporizes a liquid refrigerant (liquid refrigerant). Further, the indoor expansion valve 14 can change the flow rate of the refrigerant flowing through the indoor heat exchanger 12 by changing the throttle amount.
  • each apparatus is arrange
  • a casing 20 that forms the outer shape of the outdoor unit 1 includes a top plate (not shown), a bottom plate 21, and side plates 22 to 25.
  • the interior space of the casing 20 is separated from the heat exchange chamber 31 and the machine by a partition plate 26. It is divided into chambers 32.
  • the side plate includes a machine room side front plate 22, a machine room side rear plate 23, a heat exchange chamber side front plate 24, and a heat exchange chamber side rear plate 25.
  • the heat exchange chamber 31 includes a heat exchange chamber side front plate 24, a heat exchange chamber side rear plate 25, and a partition plate 26. Inside the heat exchange chamber 31, the outdoor heat exchanger 8 and the outdoor fan 10 are arranged.
  • the heat exchange chamber 31 supplies air between the machine room side rear plate 23 and the heat exchange chamber side rear plate 25 and between the heat exchange chamber side front plate 24 and the heat exchange chamber side rear plate 25.
  • Intake ports 27 and 28 for suction are provided.
  • the heat exchange chamber side front plate 24 is provided with an exhaust port 29 for discharging the air heat-exchanged by the outdoor heat exchanger 8 from the front surface of the outdoor unit.
  • air is sucked from the intake ports 27 and 28 provided on the back and side surfaces of the outdoor unit 1. Then, the sucked air passes through the outdoor heat exchanger 8, exchanges heat, and is then discharged from the outdoor unit 29 through the exhaust port 29 provided on the front surface of the outdoor unit.
  • the machine room 32 includes a machine room side front plate 22, a machine room side rear plate 23, and a partition plate 26, and the accumulator 5, the compressor 6, and the like are disposed inside the machine room 32.
  • the solid arrow in FIG. 1 indicates the flow of the refrigerant during the cooling operation, and the four-way valve 7 switches as indicated by the solid line.
  • the gas refrigerant compressed to high temperature and high pressure by the compressor 6 flows into the outdoor heat exchanger 8 via the four-way valve 7. While passing through the outdoor heat exchanger 8, the gas refrigerant flowing into the outdoor heat exchanger 8 dissipates heat and condenses to the outside air supplied by the outdoor blower 10, and becomes a low-temperature and high-pressure liquid refrigerant.
  • the liquid refrigerant condensed from the gas refrigerant is sent to the indoor unit 2 via the outdoor expansion valve 9.
  • the outdoor expansion valve 9 does not function as an expansion valve, the refrigerant passes through the liquid refrigerant without adiabatic expansion.
  • the liquid refrigerant flowing into the indoor unit 2 flows into the indoor heat exchanger 12 while being adiabatically expanded by the indoor expansion valve 14.
  • the liquid refrigerant undergoes adiabatic expansion it takes vaporization latent heat from the indoor air supplied by the indoor blower 13 and becomes a low-temperature and low-pressure gas refrigerant. Then, the room air from which the latent heat of vaporization has been taken is relatively cooled, and cold air is blown into the room.
  • the gas refrigerant evaporated from the liquid refrigerant is sent to the outdoor unit 1.
  • the gas refrigerant that has returned to the outdoor unit 1 passes through the four-way valve 7 and flows into the accumulator 5.
  • the gas refrigerant that has flowed into the accumulator 5 is separated from the mixed liquid refrigerant by the accumulator 5, adjusted to a predetermined dryness, supplied to the compressor 6, and compressed again.
  • the refrigerant circulates in the refrigeration cycle in the direction of the solid arrow, thereby realizing a cooling operation for supplying cold air into the room.
  • the dotted arrows in FIG. 1 indicate the flow of the refrigerant during the heating operation, and the four-way valve 7 switches as indicated by the dotted line.
  • the high-temperature and high-pressure gas refrigerant compressed by the compressor 6 flows into the indoor unit 2 via the four-way valve 7.
  • the gas refrigerant that has flowed into the indoor heat exchanger 12 dissipates heat to the indoor air supplied by the indoor blower 13, and becomes a low-temperature and high-pressure liquid refrigerant.
  • the indoor air which received heat will be heated comparatively, and warm air will be ventilated indoors.
  • the liquid refrigerant condensed from the gas refrigerant passes through the indoor expansion valve 14 and is sent to the outdoor unit 1.
  • the indoor expansion valve 14 does not function as an expansion valve, the refrigerant passes through the liquid refrigerant without being adiabatically expanded.
  • the liquid refrigerant flowing into the outdoor unit 1 flows into the outdoor heat exchanger 8 while being adiabatically expanded by the outdoor expansion valve 9.
  • the liquid refrigerant undergoes adiabatic expansion it evaporates by taking latent heat of evaporation from the outside air supplied by the outdoor blower 10 and becomes a low-temperature and low-pressure gas refrigerant.
  • the gas refrigerant evaporated from the liquid refrigerant and flowing out of the outdoor heat exchanger 8 passes through the four-way valve 7 and flows into the accumulator 5.
  • the gas refrigerant that has flowed into the accumulator 5 is separated from the mixed liquid refrigerant by the accumulator 5, adjusted to a predetermined dryness, supplied to the compressor 6, and compressed again.
  • the refrigerant circulates in the refrigeration cycle in the direction of the dotted arrow, thereby realizing a heating operation for supplying warm air into the room.
  • the outdoor heat exchanger 8 of this embodiment includes a heat exchange unit 40 and a header collecting pipe 41.
  • the heat exchanging unit 40 is a part that transfers heat between air and the refrigerant, and includes a plurality of heat transfer fins 44 and a plurality of heat transfer tubes 43.
  • the heat transfer fins 44 are configured by rectangular plate-like members. Further, the heat transfer fins 44 are stacked and arranged with a predetermined interval (about 1.5 mm) in the horizontal direction with the plate surfaces facing each other while the longitudinal direction of the plate-like member is along the vertical direction. . Then, outdoor air passes through the gaps between the stacked heat transfer fins 44.
  • the heat exchanging portion 40 is bent in a substantially L shape, but the outdoor heat exchanger 8 shown in FIG. 3A facilitates understanding of the configuration. Therefore, it is drawn as a heat exchanger provided with a flat plate-like heat exchange part.
  • the heat transfer tube 43 is formed of a tubular member having a flat tube shape with a substantially oval cross section and divided into a plurality of flow paths along the longitudinal direction. Further, the heat transfer tubes 43 are arranged with a predetermined interval in the vertical direction in a state along the horizontal direction with the elliptical flat portion facing the vertical direction. The heat transfer tubes 43 are joined to the heat transfer fins 44 while penetrating the stacked heat transfer fins 44. In addition, header collecting pipes 41 are communicated with both ends of each heat transfer pipe 43.
  • the header collecting pipe 41 includes a collection header 41a and a turn-up header 41b.
  • the collection header 41 a bundles the heat transfer tubes 43 at both ends thereof, and distributes and collects the refrigerant to the heat transfer tubes 43.
  • a gas pipe 45 serving as a gas refrigerant inlet / outlet and a liquid pipe 46 serving as a liquid refrigerant inlet / outlet are connected to the collection header 41a.
  • the folded header 41 b sends the refrigerant discharged from the heat transfer tube 43 to another heat transfer tube 43.
  • the interval between the header collecting pipe 41 and the adjacent heat transfer fins 44 is wider than the interval between the heat transfer fins 44, and the interval is set to about 20 mm.
  • the heat transfer fins 44, the heat transfer tubes 43, and the header collecting tubes 41 constituting the outdoor heat exchanger 8 are made of the same material aluminum alloy and are integrally joined to each other by brazing.
  • the outdoor heat exchanger 8 having such a configuration is installed in a heat exchange chamber 31 of the housing 20 via a support bracket 50.
  • the support bracket 50 is installed between the heat exchange unit 40 and the header collecting pipe 41.
  • FIG. 4 shows a state in which the support bracket 50 is arranged on the collection header 41a side. However, as shown in FIG. 2, the support bracket 50 is also on the turn-up header 41b side. Placed in.
  • the support bracket 50 is positioned on the outermost side in the stack, and the heat transfer fins 44 constituting the edge portion 40 a of the heat exchanging unit 40 adjacent to the header collecting pipe 41, and the header collecting pipe 41. That is, the support bracket 50 is disposed at a portion of the heat transfer tube 43 that connects the heat exchanging unit 40 and the header collecting tube. Further, as shown in FIGS. 4 to 6, the support bracket 50 includes a heat exchange side holding portion 51, a housing side holding portion 52, and a fin contact portion 55. In addition, the support bracket 50 of this embodiment is formed by press molding from a flat plate-like member made of an aluminum alloy of the same material as the outdoor heat exchanger 8 into a substantially U-shaped cross section.
  • the heat exchange side holding part 51 is a part fixed to the outdoor heat exchanger 8, and the heat exchange part 40 and the machine room 32 are arranged so that the air sucked into the outdoor unit 1 does not enter the machine room 32. It is a site
  • the heat exchange side holding portion 51 has a flat plate shape, and the same number and the same number of tube holes 56 as the heat transfer tubes 43 are open in the vertical direction so as to penetrate the plate surface (see FIG. 5). . Further, the heat exchange side holding portion 51 is located on the outermost side at the interval between the heat transfer fins 44 and is close to the heat transfer fins 44 constituting the edge portion 40a on the plate surface of the heat transfer fins 44. Are arranged along.
  • each heat exchanger tube 43 penetrates the pipe hole 56 without gap.
  • the heat exchange side holding portion 51 has the tube hole 56 fixed to the outer periphery of the heat transfer tube 43 by brazing.
  • the dimensions of the heat exchange side holding portion 51 are set so that the upstream end edge thereof coincides with the tips of the heat transfer fins 44.
  • the housing side holding part 52 is a part fixed to the side plate constituting the housing 20.
  • the housing side holding part 52 includes an upstream side holding piece 53 and a downstream side holding piece 54.
  • the upstream holding piece 53 has a flat plate shape and extends along the longitudinal direction of the heat transfer tube 43 from the upstream end edge of the heat exchange side holding portion 51.
  • the downstream holding piece 54 has a flat plate shape and extends along the longitudinal direction of the heat transfer tube 43 from the downstream edge of the heat exchange side holding portion 51.
  • the upstream edge and the downstream edge of the heat exchange side holding part 51 are an edge located on the upstream side when air passes through the heat exchange part 40 and an edge located on the downstream side. pointing.
  • the upstream holding piece 53 and the downstream holding piece 54 are both provided to be orthogonal to the heat exchange side holding portion 51. It is not limited to such a form.
  • the downstream holding piece 54 may be extended along the partition plate 26 to form an air flow path together with the partition plate 26. That is, the upstream holding piece 53 and the downstream holding piece 54 take various forms according to the shape of the machine room side rear plate 23 coupled to the housing side holding portion 52 and the shape of the partition plate 26. Can do.
  • the fin contact portion 55 is a portion that guides the air sucked into the outdoor unit 1 not to pass between the heat transfer fins 44 and the header collecting pipe 41 but to pass through the heat exchange portion 40.
  • the fin contact portion 55 is positioned on the outermost side in the stacking, and is disposed in contact with or adjacent to the heat transfer fin 44 that forms the edge portion 40a of the heat exchanging portion 40 adjacent to the header collecting pipe 41.
  • the heat exchange side holding portion 51 also serves as the fin contact portion 55. Therefore, in the support bracket 50, the heat exchange side holding part 51 is close to the heat transfer fins 44 at an interval between the heat transfer fins 44, and the housing side holding part 52 is connected to the header collecting pipe 41 from the heat transfer fin 44 side. It is extended to the side. That is, the support bracket 50 is disposed so that the U-shape thereof opens toward the header collecting pipe 41 side.
  • an insulating member 80 is interposed between the housing side holding portion 52, the machine room side rear plate 23, and the partition plate 26.
  • the insulating member 80 is made of an electrically insulating material such as resin and rubber.
  • the support bracket 50 disposed between the heat exchange unit 40 and the header collecting pipe 41 is fixed to the housing 20.
  • the restriction of the air flow between the header collecting pipe 41 and the heat transfer fins 44 and the fixing of the outdoor heat exchanger 8 to the housing 20 can be achieved at low cost.
  • the salinity is added to the header collecting pipe 41 or the heat transfer pipe 43 between the header collecting pipe 41 and the heat transfer fins 44.
  • the heat exchange part 40 has a structure where corrosion is suppressed by the sacrificial anticorrosive effect of the fin 44 joined to the heat exchanger tube 43.
  • the support bracket 50 and each member of the housing 20 are fixed with the insulating member 80 interposed therebetween. Therefore, even when a corrosive aluminum alloy or the like is used as the material of the support bracket 50 and a ferrous metal or the like is used for the side plate of the housing 20, it is possible to prevent dissimilar metal contact corrosion. Thereby, the reliability as the air conditioner S can be improved.
  • the support bracket 50 disposed between the collection header 41a and the heat transfer fins 44 has been described. However, as shown in FIG. Similar effects can be obtained when the support bracket 50 is disposed. Further, in the present embodiment, the upstream holding piece 53 and the downstream holding piece 54 constituting the housing side holding portion of the support bracket 50 are disposed substantially in parallel, but the present invention is limited to such a form. It is not a thing.
  • the downstream holding piece 54 only needs to have a shape that can be fixed in accordance with the shape of the partition plate 26, and the same function and effect can be obtained.
  • the heat exchanger of such a form is not limited to the holding.
  • the support of the present embodiment The bracket 50 can be applied. Even when the corrugated fin is applied to the multi-heat exchanger with the support bracket 50, the same effects as the present embodiment can be obtained.
  • the air conditioner S of 2nd Embodiment is demonstrated with reference to FIG.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • the support bracket 50A is greatly different from the first embodiment described above.
  • the configurations of the outdoor heat exchanger 8 and the housing 20 are the same as those in the first embodiment.
  • the support bracket 50 ⁇ / b> A has a substantially U-shaped cross section that is the same as that of the support bracket 50 of the first embodiment, but has a different orientation when attached to the outdoor heat exchanger 8. . That is, in the support bracket 50A, the heat exchange side holding portion 51 is disposed in contact with the header collecting pipe 41, and the housing side holding portion 52 extends from the header collecting pipe 41 side to the heat transfer fin 44 side. And 50 A of support brackets are arrange
  • the distal end portion of the upstream holding piece 53A constituting the housing side holding portion 52 is located on the outermost side and constitutes the edge portion 40a of the heat exchanging portion 40 adjacent to the header collecting tube 41 (most header collecting tube 41). Close to the heat transfer fin 44. That is, the tip of the upstream holding piece 53A is set to the fin contact portion 55A. Further, the heat exchange side holding part 51 is fixed to the header collecting pipe 41 while the pipe hole 56 is fixed to the outer periphery of the heat transfer pipe 43 by brazing.
  • the heat exchange side holding portion 51 is brazed to the header collecting pipe 41 so that it is applied to the heat transfer pipe 43 by the vibration of the compressor 6 or the like during the operation of the air conditioner S.
  • the load can be distributed to the header collecting pipe 41.
  • the brazing of the heat exchange side holding portion 51 may be configured such that the brazing between the tube hole 56 and the heat transfer tube 43 is omitted and only the brazing with the header collecting pipe 41 is performed.
  • the fin contact portion 55Aa of this aspect has a flat plate shape and extends from the tip of the upstream holding piece 53Aa toward the downstream side in the air flow direction to the front of the heat transfer tube 43. Further, the fin contact portion 55Aa is located on the outermost side, and is joined to the heat transfer fin 44 constituting the edge portion 40a by brazing. That is, this aspect joins the fin contact portion 55Aa and the heat transfer fin 44 by brazing, and also joins the header collecting pipe 41 and the heat transfer pipe 43, and the heat transfer fin, as in the above-described another aspect 1. 44 and the heat transfer tube 43 are joined.
  • the header bracket pipe 41 and the heat transfer fins 44 are configured such that the support bracket 50Aa is configured to be joined to the heat transfer fins 44 that constitute the edge portions 40a with the fin contact portions 55Aa positioned on the outermost side. It is possible to block the air flowing between the two. Thereby, the air which flows into the heat exchange part 40 increases, and heat exchange efficiency can be improved. Further, when the outdoor heat exchanger 8 is assembled, the heat transfer tubes 43, 55aa are in contact with the outermost heat transfer fins 44, and the heat exchange side holding portions 51 are in contact with the header collecting tubes 41. By assembling the heat transfer fins 44 and the header collecting pipe 41, each member can be positioned.
  • the fin contact portion 55Ab of this aspect is a form in which the fin contact portion 55Aa of another aspect 1 is further extended to the downstream side in the air flow direction, and is connected to the tip of the downstream holding piece 54. That is, the support bracket 50Ab has a substantially rectangular shape (box shape) in cross section. Note that the fin contact portion 55Ab is located on the outermost side at the interval between the heat transfer fins 44 and is disposed close to the heat transfer fins 44 constituting the edge portion 40a, and is joined by brazing or the like. Absent.
  • the stability when the outdoor heat exchanger 8 is installed on the bottom plate 21 of the housing 20 can be improved.
  • the air conditioner S of 3rd Embodiment is demonstrated with reference to FIG.
  • the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
  • a significant difference from the first embodiment described above is the configuration of the outdoor heat exchanger 8B and the support bracket 50B.
  • the configuration of the housing 20 is the same as that of the first embodiment described above.
  • the outdoor heat exchanger 8B is composed of two heat exchangers 8F and 8R.
  • Each part of the two heat exchangers 8F and 8R is set to have the same size, and is arranged so as to be seen as one when the heat exchange part 40 is seen from the front. That is, in this embodiment, the two heat exchangers 8F and 8R are installed so as to overlap in the direction in which air flows.
  • the support bracket 50B of this embodiment is supported by the housing
  • the support bracket 50B of the present embodiment includes a plate-shaped heat exchange side holding portion 51B and a housing side holding portion 52 extending from both end edges of the heat exchange side holding portion 51. It has a substantially U-shaped cross section.
  • the size of the heat exchange side holding portion 51B in the direction of air flow is set to about twice that of the first embodiment, and the heat transfer tubes 43 of the two heat exchangers 8F and 8R arranged in an overlapping manner penetrate. , Brazed.
  • the support bracket 50B has the heat exchange side holding portion 51B close to the heat transfer fin 44 side, and the housing side holding portion 52 from the heat transfer fin 44 side to the header collecting pipe 41 side. It is extended to. That is, the support bracket 50 ⁇ / b> B is arranged so that the U-shape thereof opens toward the header collecting pipe 41 side.
  • the heat exchange side holding portion 51B also serves as the fin contact portion 55B.
  • the support bracket 50B is not limited to the shape of the present embodiment.
  • the support bracket 50 of the first embodiment can be installed in each heat exchanger of the outdoor heat exchanger 8B, and the adjacent housing side holding parts 52 can be joined together by brazing or the like later.
  • it is also possible to set it as the structure which supports the two heat exchangers 8F and 8R collectively. In such a case, parts can be shared with different models, and the manufacturing cost can be reduced.
  • the support bracket 50Ba of this aspect shows a form in which the header collecting pipe 41 is shifted and arranged.
  • the heat exchange side holding part 51Ba of this aspect is formed in the shape bent in step shape so that both the outermost heat-transfer fins 44 may be met.
  • the heat exchange side holding portion 51Ba also serves as the fin contact portion 55Ba.
  • the support bracket 50Bb is divided into two.
  • the upstream bracket 50F for the upstream heat exchanger 8F and the downstream bracket 50R for the downstream heat exchanger 8R are separately prepared, and both are joined later to form one support bracket 50Bb.
  • the configuration is as follows. That is, the heat exchange side holding portion 51Bb is composed of the heat exchange side holding portion 51F and the downstream side holding piece 54F of the upstream bracket 50F, and the upstream side holding piece 53R and the heat exchange side holding portion 51R of the downstream bracket 50R.
  • the staircase shape is configured.
  • the heat exchange side holding portion 51Bb also serves as the fin contact portion 55Bb.
  • the installation form of the two heat exchangers 8F and 8R is arranged so that the header collecting pipe 41 is displaced in the longitudinal direction of the heat transfer pipe 43 as in the different mode 1 of the third embodiment described above.
  • the same effects as those of the third embodiment described above can be obtained, and the shapes of the upstream bracket 50F and the downstream bracket 50R can be simplified. it can.
  • the processing of the support bracket 50Bb is facilitated, and various arrangement patterns of the heat exchanger can be accommodated by combining some simple upstream brackets 50F and downstream brackets 50R.
  • parts can be shared with different models, and the manufacturing cost can be reduced.

Landscapes

  • 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)
  • Other Air-Conditioning Systems (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
PCT/JP2017/043255 2017-01-04 2017-12-01 室外機、および冷凍サイクル装置 WO2018128035A1 (ja)

Priority Applications (2)

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CN201780035599.4A CN109312935B (zh) 2017-01-04 2017-12-01 室外机以及冷冻循环装置
US16/223,341 US20190120556A1 (en) 2017-01-04 2018-12-18 Outdoor device and refrigeration cycle device

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JP2017000022A JP6820750B2 (ja) 2017-01-04 2017-01-04 室外機、および冷凍サイクル装置
JP2017-000022 2017-01-04

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JP6583489B1 (ja) * 2018-06-15 2019-10-02 ダイキン工業株式会社 熱交換ユニット
JP7374356B2 (ja) 2021-02-04 2023-11-06 三菱電機株式会社 室外機および冷凍サイクル装置
WO2023119565A1 (ja) * 2021-12-23 2023-06-29 三菱電機株式会社 空気調和機の室外機

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JP6820750B2 (ja) 2021-01-27
CN109312935B (zh) 2019-11-22
CN109312935A (zh) 2019-02-05
JP2018109471A (ja) 2018-07-12

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