WO2013099911A1 - Heat exchanger and refrigeration device - Google Patents
Heat exchanger and refrigeration device Download PDFInfo
- Publication number
- WO2013099911A1 WO2013099911A1 PCT/JP2012/083584 JP2012083584W WO2013099911A1 WO 2013099911 A1 WO2013099911 A1 WO 2013099911A1 JP 2012083584 W JP2012083584 W JP 2012083584W WO 2013099911 A1 WO2013099911 A1 WO 2013099911A1
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- WIPO (PCT)
- Prior art keywords
- header collecting
- collecting pipe
- baffle
- heat exchanger
- refrigerant
- Prior art date
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Classifications
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- 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
- F28F9/0202—Header boxes having their inner space divided by partitions
- F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
- F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
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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
- F28D1/0535—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- 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
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- 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
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- 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
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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
- F28D1/0535—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
- F28D1/05375—Assemblies of conduits connected to common headers, e.g. core type radiators with particular pattern of flow, e.g. change of flow direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
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- 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
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- 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
- F28F9/0202—Header boxes having their inner space divided by partitions
- F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
- F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
- F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
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- 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
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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
- F28D2001/0253—Particular components
- F28D2001/026—Cores
- F28D2001/0273—Cores having special shape, e.g. curved, annular
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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
- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/06—Derivation channels, e.g. bypass
Definitions
- the present invention relates to a heat exchanger and a refrigeration apparatus.
- a heat exchanger having a pair of header collecting pipes and a plurality of tubes communicating with each other like the heat exchanger described in Patent Document 1 Japanese Patent Laid-Open No. 2010-112580
- Patent Document 1 Japanese Patent Application Laid-Open No. 2010-112580
- a refrigerant flow is provided between a pair of header collecting pipes by providing a partition plate that divides the internal space of the header collecting pipe up and down. It is configured to reciprocate.
- Patent Document 1 Japanese Patent Laid-Open No. 2010-112580
- a lid member is fixed to the header collecting pipe body with respect to the upper end of the header collecting pipe of the heat exchanger. Since it is only the inner surface of the tube body, it is difficult to increase the bonding strength.
- an opening is formed inside the end portion of the header collecting pipe body, and the lid member is inserted through the opening. It is possible to insert them and fix them together.
- the objective of this invention is ensuring the drainage property on a cover member, maintaining the adhering state of a cover member and a header collecting pipe main body favorably.
- An object of the present invention is to provide a heat exchanger and a refrigeration apparatus that can perform the above-described operation.
- a heat exchanger includes a plurality of flat tubes, a header collecting pipe to which the flat tubes are connected, and a plurality of fins joined to the flat tubes,
- a heat exchanger in which a fluid flowing inside exchanges heat with air flowing outside the flat tube, and the header collecting pipe includes a header collecting pipe body and a lid member.
- the header collecting pipe body is provided such that the longitudinal direction is the vertical direction.
- the lid member is provided inside the upper end of the header collecting pipe body and closes the upper side of the header collecting pipe body.
- the header collecting pipe body has a pipe end portion extending upward from the lid member.
- a drainage part is formed in a part of the pipe end part.
- the plurality of flat tubes are not particularly limited, but may be arranged so that the side surfaces face each other, for example.
- this heat exchanger it is possible to drain condensed water, rainwater, and the like that may exist above the lid member via a drainage section provided in the header collecting pipe body. For this reason, it becomes possible to make it difficult to produce corrosion in the vicinity of the upper end of the header collecting pipe.
- the drainage portion is a groove formed such that a part of the pipe end portion is recessed downward.
- the drainage portion can be formed by forming a groove by denting a part of the pipe end portion of the header collecting pipe main body downward, manufacture becomes easy.
- the heat exchanger which concerns on the 3rd viewpoint of this invention is a heat exchanger which concerns on a 2nd viewpoint,
- the lower end part of a drainage groove is located below rather than the upper end part of a cover member.
- the drainage groove since the drainage groove has a portion lower than the upper end portion of the lid member, it is possible to discharge all the amount of water accumulated above the lid member.
- a heat exchanger is the heat exchanger according to any one of the first to third aspects, wherein at least a part of the outer peripheral portion of the lid member is other than the pipe end portion of the header collecting pipe. Is sandwiched from above and below between a portion of the tube and the tube end portion.
- the upper part of the lid member has a part in contact with the pipe end part
- the lower part of the lid member has a part in contact with the part other than the pipe end part of the header collecting pipe main body. . For this reason, it is possible to further strengthen the fixation between the header collecting pipe body and the lid member.
- the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger that is any one of the heat exchangers of the first to fourth aspects are connected to each other.
- the refrigerant circuit comprised by being made is provided.
- the refrigerant circuit can cause the second heat exchanger to function as at least a refrigerant evaporator.
- the second heat exchanger functions as a refrigerant evaporator, even if condensed water may accumulate in the upper end portion of the header collecting pipe, it can be easily drained through the drainage section. Is possible.
- the heat exchanger according to the first aspect of the present invention corrosion near the upper end of the header collecting pipe can be made difficult to occur.
- the heat exchanger according to the second aspect of the present invention is easy to manufacture.
- the refrigeration apparatus according to the fifth aspect of the present invention even if condensed water may accumulate in the upper end portion of the header collecting pipe, it can be easily drained through the drainage section.
- summary of a structure of the air conditioning apparatus which concerns on one Embodiment.
- the perspective view which shows the external appearance of an air-conditioning outdoor unit.
- the external appearance schematic perspective view which shows an outdoor heat exchanger, gas refrigerant
- the typical rear view which shows schematic structure of an outdoor heat exchanger.
- the schematic perspective view which shows the attachment state of the heat-transfer fin in an outdoor heat exchanger.
- FIG. 14 is a schematic side view of the baffle viewed from the left side of FIG. 13.
- the side view schematic diagram which shows the state inserted until just before a baffle plastically deformed.
- the side view schematic diagram which shows the state which insertion was completed in the state which the baffle deformed plastically.
- the external appearance perspective view which shows the mode of the insertion destination side in the state by which the baffle as a partition plate was inserted and fixed to the header collecting pipe main body.
- the external appearance perspective view which shows the mode on the opposite side to the insertion destination of the state by which the baffle as a partition plate was inserted and fixed to the header collecting pipe main body.
- the external appearance perspective view which shows the state by which the edge part vicinity of the header pipe main body was block
- the external appearance perspective view which shows the state by which the edge part vicinity of the header pipe main body which concerns on the modification A was block
- the external appearance perspective view which shows the state by which the edge part vicinity of the header pipe main body which concerns on the modification B was block
- FIG. 1 is a circuit diagram illustrating an outline of a configuration of an air conditioner according to an embodiment of the present invention.
- the air conditioner 1 is an apparatus used for air conditioning in a building in which the air conditioning indoor unit 3 is installed by performing a vapor compression refrigeration cycle operation, and uses the air conditioning outdoor unit 2 as a heat source side unit,
- the air conditioning indoor unit 3 as a side unit is connected by refrigerant communication pipes 6 and 7.
- the refrigerant circuit configured by connecting the air-conditioning outdoor unit 2, the air-conditioning indoor unit 3, and the refrigerant communication pipes 6 and 7 includes a compressor 91, a four-way switching valve 92, an outdoor heat exchanger 20, an expansion valve 40, and indoor heat.
- the exchanger 4 and the accumulator 93 are connected by a refrigerant pipe.
- a refrigerant is sealed in the refrigerant circuit, and a refrigeration cycle operation is performed in which the refrigerant is compressed, cooled, decompressed, heated and evaporated, and then compressed again.
- the refrigerant for example, one selected from R410A, R407C, R22, R134a, carbon dioxide, and the like is used.
- Air-conditioning indoor unit 3 is installed on a wall surface of the room by wall hanging or the like, or embedded or suspended in a ceiling of a room such as a building.
- the air conditioning indoor unit 3 has an indoor heat exchanger 4 and an indoor fan 5.
- the indoor heat exchanger 4 is, for example, a cross fin type fin-and-tube heat exchanger composed of heat transfer tubes and a large number of fins, and functions as a refrigerant evaporator during cooling operation to cool indoor air. In the heating operation, the heat exchanger functions as a refrigerant condenser and heats indoor air.
- the air conditioning outdoor unit 2 is installed outside a building or the like, and is connected to the air conditioning indoor unit 3 via the refrigerant communication pipes 6 and 7. As shown in FIGS. 2 and 3, the air-conditioning outdoor unit 2 has a substantially rectangular parallelepiped unit casing 10.
- the air conditioner outdoor unit 2 has a structure in which the blower chamber S ⁇ b> 1 and the machine chamber S ⁇ b> 2 are formed by dividing the internal space of the unit casing 10 into two by a partition plate 18 extending in the vertical direction. (So-called trunk type structure).
- the air conditioner outdoor unit 2 includes an outdoor heat exchanger 20 and an outdoor fan 95 disposed in the blower chamber S1 of the unit casing 10, and includes a compressor 91 and four compressors disposed in the machine chamber S2 of the unit casing 10.
- a path switching valve 92, an accumulator 93, an expansion valve 40, a gas refrigerant pipe 31, and a liquid refrigerant pipe 32 are provided.
- the unit casing 10 includes a bottom plate 12, a top plate 11, a side plate 13 on the blower chamber side, a side plate 14 on the machine chamber side, a front plate 15 on the blower chamber side, and a front plate 16 on the machine chamber side. Make up body.
- the air conditioner outdoor unit 2 is configured to suck outdoor air into the blower chamber S ⁇ b> 1 in the unit casing 10 from a part of the back surface and side surface of the unit casing 10, and blow out the sucked outdoor air from the front surface of the unit casing 10.
- the suction port 10a and the suction port 10b with respect to the blower chamber S1 in the unit casing 10 include an end portion on the back side of the side plate 13 on the blower chamber side and an end portion on the blower chamber S1 side of the side plate 14 on the machine chamber side. And is formed over.
- the blower outlet 10c is provided in the fan chamber side front board 15, The front side is covered with the fan grill 15a.
- the compressor 91 is a hermetic compressor driven by a compressor motor, for example, and is configured to be able to vary the operation capacity.
- the four-way switching valve 92 is a mechanism for switching the direction of refrigerant flow. During the cooling operation, the four-way switching valve 92 connects the refrigerant pipe on the discharge side of the compressor 91 and the gas refrigerant pipe 31 extending from one end (gas side end) of the outdoor heat exchanger 20, and via the accumulator 93. Then, the refrigerant communication pipe 7 for the gas refrigerant and the refrigerant pipe on the suction side of the compressor 91 are connected (see the solid line of the four-way switching valve 92 in FIG. 1).
- the four-way switching valve 92 connects the refrigerant pipe on the discharge side of the compressor 91 and the refrigerant communication pipe 7 for the gas refrigerant, and also connects the suction side and the outdoor heat of the compressor 91 via the accumulator 93.
- a gas refrigerant pipe 31 extending from one end (gas side end) of the exchanger 20 is connected (see the broken line of the four-way switching valve 92 in FIG. 1).
- the outdoor heat exchanger 20 is disposed upright in the blower chamber S1 in the vertical direction (vertical direction) and faces the suction ports 10a and 10b.
- the outdoor heat exchanger 20 is an aluminum heat exchanger, and in this embodiment, the one having a design pressure of about 3 MPa to 4 MPa is used.
- the gas refrigerant pipe 31 extends from one end (gas side end) so as to be connected to the four-way switching valve 92.
- the liquid refrigerant pipe 32 extends from the other end (liquid side end) of the outdoor heat exchanger 20 so as to be connected to the expansion valve 40.
- the accumulator 93 is connected between the four-way switching valve 92 and the compressor 91.
- the accumulator 93 has a gas-liquid separation function that divides the refrigerant into a gas phase and a liquid phase.
- the refrigerant flowing into the accumulator 93 is divided into a liquid phase and a gas phase, and the gas phase refrigerant that collects in the upper space is supplied to the compressor 91.
- the outdoor fan 95 supplies outdoor air to the outdoor heat exchanger 20 for heat exchange with the refrigerant flowing through the outdoor heat exchanger 20.
- the expansion valve 40 is a mechanism for decompressing the refrigerant in the refrigerant circuit, and is an electric valve capable of adjusting the opening degree.
- the expansion valve 40 is provided between the outdoor heat exchanger 20 and the refrigerant communication pipe 6 for liquid refrigerant in order to adjust the refrigerant pressure and the refrigerant flow rate, and allows the refrigerant to be used in both the cooling operation and the heating operation. Has the function of expanding.
- the outdoor fan 95 is disposed in the blower chamber S1 so as to face the outdoor heat exchanger 20.
- the outdoor fan 95 sucks outdoor air into the unit, causes the outdoor heat exchanger 20 to perform heat exchange between the refrigerant and the outdoor air, and then discharges the air after heat exchange to the outside.
- the outdoor fan 95 is a fan capable of changing the air volume of air supplied to the outdoor heat exchanger 20, and is, for example, a propeller fan driven by a motor such as a DC fan motor.
- the four-way switching valve 92 is in the state indicated by the solid line in FIG. 1, that is, the discharge side of the compressor 91 is connected via the gas refrigerant pipe 31. It is connected to the gas side of the outdoor heat exchanger 20, and the suction side of the compressor 91 is connected to the gas side of the indoor heat exchanger 4 via the accumulator 93 and the refrigerant communication pipe 7.
- the opening of the expansion valve 40 is adjusted so that the degree of superheat of the refrigerant at the outlet of the indoor heat exchanger 4 (that is, the gas side of the indoor heat exchanger 4) is constant.
- the low-pressure gas refrigerant is compressed by the compressor 91 to become a high-pressure gas refrigerant.
- This high-pressure gas refrigerant is sent to the outdoor heat exchanger 20 via the four-way switching valve 92. Thereafter, the high-pressure gas refrigerant is condensed in the outdoor heat exchanger 20 by exchanging heat with the outdoor air supplied by the outdoor fan 95 to become a high-pressure liquid refrigerant.
- the supercooled high-pressure liquid refrigerant is sent from the outdoor heat exchanger 20 to the expansion valve 40.
- the refrigerant that has been decompressed to near the suction pressure of the compressor 91 by the expansion valve 40 and is in a low-pressure gas-liquid two-phase state is sent to the indoor heat exchanger 4 and performs heat exchange with indoor air in the indoor heat exchanger 4. Evaporates into a low-pressure gas refrigerant.
- This low-pressure gas refrigerant is sent to the air-conditioning outdoor unit 2 via the refrigerant communication pipe 7 and again sucked into the compressor 91.
- the air conditioner 1 uses the outdoor heat exchanger 20 as the refrigerant condenser compressed in the compressor 91 and the indoor heat exchanger 4 as the refrigerant condensed in the outdoor heat exchanger 20.
- the four-way switching valve 92 is in the state indicated by the broken line in FIG. 1, that is, the discharge side of the compressor 91 is connected to the gas side of the indoor heat exchanger 4 via the refrigerant communication pipe 7.
- the suction side of the compressor 91 is connected to the gas side of the outdoor heat exchanger 20 via the gas refrigerant pipe 31.
- the opening of the expansion valve 40 is adjusted so that the degree of supercooling of the refrigerant at the outlet of the indoor heat exchanger 4 becomes constant at the target value of the degree of supercooling.
- the high-pressure gas refrigerant sent to the air conditioning indoor unit 3 undergoes heat exchange with room air in the indoor heat exchanger 4 to condense into a high-pressure liquid refrigerant, and then passes through the expansion valve 40. Further, the pressure is reduced according to the opening degree of the expansion valve 40.
- the refrigerant that has passed through the expansion valve 40 flows into the outdoor heat exchanger 20.
- the low-pressure gas-liquid two-phase refrigerant flowing into the outdoor heat exchanger 20 exchanges heat with the outdoor air supplied by the outdoor fan 95 to evaporate into a low-pressure gas refrigerant. Then, the air is sucked into the compressor 91 again.
- the air conditioner 1 uses the indoor heat exchanger 4 as a refrigerant condenser compressed in the compressor 91 and the outdoor heat exchanger 20 as a refrigerant condensed in the indoor heat exchanger 4.
- the indoor heat exchanger 4 As described above, in the heating operation, the air conditioner 1 uses the indoor heat exchanger 4 as a refrigerant condenser compressed in the compressor 91 and the outdoor heat exchanger 20 as a refrigerant condensed in the indoor heat exchanger 4.
- FIG. 4 showing a schematic external perspective view of the outdoor heat exchanger 20, and a schematic rear view of the outdoor heat exchanger The structure of the outdoor heat exchanger 20 will be described in detail with reference to FIG.
- the outdoor heat exchanger 20 includes a heat exchanging portion 21 that exchanges heat between the outdoor air and the refrigerant, and the heat exchanging portion 21 includes a large number of heat transfer fins 21a and a large number of flat multi-hole tubes 21b.
- the heat transfer fins 21a and the flat multi-hole tube 21b are both made of aluminum or an aluminum alloy.
- the flat multi-hole tube 21b functions as a heat transfer tube, and transfers heat moving between the heat transfer fins 21a and outdoor air to the refrigerant flowing inside.
- the outdoor heat exchanger 20 includes aluminum header collecting pipes 22 and 23, one on each end of the heat exchange unit 21.
- the header collecting pipe 22 has internal spaces 22a and 22b partitioned in the vertical direction by the first baffle 22c.
- a gas refrigerant pipe 31 is connected to the upper internal space 22a, and a liquid refrigerant pipe 32 is connected to the lower internal space 22b.
- the interior of the header collecting pipe 23 is partitioned in the vertical direction by a second baffle 23f, a third baffle 23g, a fourth baffle 23h, and a fifth baffle 23i to form internal spaces 23a, 23b, 23c, 23d, and 23e. .
- a second baffle 23f to the three internal spaces 23 a, 23 b, 23 c of the header collecting pipe 23, many flat multi-hole pipes 21 b connected to the internal space 22 a above the header collecting pipe 22 are connected.
- a large number of flat multi-hole pipes 21 b connected to the internal space 22 b below the header collecting pipe 22 are connected to the three inner spaces 23 c, 23 d, and 23 e of the header collecting pipe 23.
- each of the baffles is a component that is used not only as a partition plate of the header collecting pipe body 50 but also as a lid member.
- the baffle 60 will be described as a representative.
- the uppermost internal space 23 a and the lowermost internal space 23 e of the header collecting pipe 23 are connected by a connecting pipe 24.
- the internal space 23b in the second stage from the top and the internal space 23d in the second stage from the bottom are connected by a connecting pipe 25.
- the intermediate internal space 23c connects a part of the upper part (part connected to the upper internal space 22a) and a part of the lower part (part connected to the lower internal space 22b) of the heat exchange unit 21. It also plays a function.
- the liquid is liquefied, turned back at the header collecting pipe 23, passes through the lower part of the heat exchanging section 21, and goes out from the liquid refrigerant pipe 32.
- the refrigerant flow is in the opposite direction to the flow indicated by the arrows in FIG.
- FIG. 7 is a partially enlarged view showing a cross-sectional structure in a plane perpendicular to the flat direction of the flat multi-hole tube 21b of the heat exchanger 21 of the outdoor heat exchanger 20.
- FIG. 8 is a schematic perspective view showing a mounting state of the heat transfer fins 21 a in the outdoor heat exchanger 20.
- the heat transfer fins 21a are thin aluminum or aluminum alloy flat plates.
- Each of the heat transfer fins 21a is formed with a plurality of flat tube insertion notches 21aa extending in the vertical direction.
- the heat transfer fins 21a are attached so as to have countless portions protruding toward the upstream side of the air flow.
- the flat multi-hole tube 21b has upper and lower flat portions serving as heat transfer surfaces and a plurality of internal flow paths 21ba through which the refrigerant flows.
- the flat multi-hole tubes 21b that are slightly thicker than the upper and lower widths of the cutouts 21aa are arranged in a plurality of stages at intervals with the plane portion facing up and down, and are temporarily fixed in a state of being fitted into the cutouts 21aa. The Thus, the heat transfer fin 21a and the flat multi-hole tube 21b are brazed in a temporarily fixed state in which the flat multi-hole tube 21b is fitted in the notch 21aa of the heat transfer fin 21a.
- each flat multi-hole tube 21b are fitted into the header collecting tubes 22 and 23 and brazed. Therefore, the internal spaces 22a and 22b of the header collecting pipe 22 and the internal spaces 23a, 23b, 23c, 23d and 23e of the header collecting pipe 23 and the internal flow path 21ba of the flat multi-hole pipe 21b are connected.
- the header collecting pipe 22 has a header collecting pipe main body 50, a baffle 60 as a lid member, and a baffle 60 as a partition plate.
- FIG. 9 is an external perspective view showing the vicinity of the upper end portion of the header collecting pipe body 50.
- FIG. 10 the side view seen from the side where the flat multi-hole pipe of the header collecting pipe main body is connected is shown.
- FIG. 11 shows a side view of the header collecting pipe body as viewed from the front.
- the header collecting pipe main body 50 is a substantially cylindrical member, and upper and lower end portions thereof are opened.
- a brazing material 51 is applied to the outer peripheral surface 51 a on the radially outer side of the header collecting pipe body 50.
- the type of the brazing material 51 is not particularly limited.
- an aluminum brazing material is preferable as the brazing material including a common material together with the material of the header collecting pipe body 50 and the material of the baffle 60. From the viewpoint of material cost, it is preferable that the brazing material is not applied to the inner peripheral surface 51b on the radially inner side of the header collecting pipe body 50 and the upper and lower end surfaces.
- the header collecting pipe body 50 is formed with a plurality of flat tube insertion openings 59, a plurality of baffle insertion openings 56, a plurality of baffle tip openings 54, and an opening 55.
- the flat tube insertion opening 59 is an opening for inserting one end of the flat multi-hole tube 21 b, and is opened in the radial direction at a portion other than the end portion of the header collecting pipe main body 50.
- a plurality of flat tube insertion openings 59 are provided so as to be arranged in the vertical direction, which is the longitudinal direction of the header collecting pipe body 50.
- the flat tube insertion opening 59 is formed such that an arc portion corresponding to an angle of 90 to 120 degrees in the axis of the header collecting pipe body 50 is removed.
- the baffle insertion opening 56 is an opening for inserting a baffle 60 as a partition plate, which will be described later.
- the baffle insertion opening 56 is a portion other than the end of the header collecting pipe body 50 and has a diameter on the side opposite to the flat tube insertion opening 59. Open in the direction.
- a plurality of the baffle insertion openings 56 are provided so as to be aligned in the vertical direction, which is the longitudinal direction of the header collecting pipe body 50.
- the baffle insertion opening 56 is formed such that an arc portion corresponding to an axis angle of about 160 to 200 degrees is removed from the header collecting pipe main body 50.
- the baffle insertion opening 56 has a thick upper surface 56d, a thick lower surface 56e, and a thick contact surface 56b in the radially thick portion of the header collecting pipe body 50.
- the thick contact surface 56b is a surface that expands in the radial direction and the vertical direction of the header collecting pipe body 50, and includes a first insertion direction surface 64b and a baffle 60 in a first locked portion 64 of the baffle 60 described later.
- the second locked portion 65 is brought into surface contact with the second insertion direction surface 65b and locked.
- the baffle tip opening 54 is an opening formed on the opposite side to the main opening direction of the baffle insertion opening 56, that is, on the same side as the flat tube insertion opening 59, and is opened so as to be circular in a radial direction. is doing.
- the baffle tip opening 54 has a cylindrical inner surface 54 b with the radial direction of the header collecting pipe body 50 as the axial direction at the radial thick portion of the header collecting pipe body 50.
- the baffle tip opening 54 is formed at the same height as the baffle insertion opening 56 in the header collecting pipe body 50.
- the header collecting pipe body 50 is provided with a pipe end portion 53 for attaching a baffle 60 as a lid member to be described later at the end.
- the pipe end portion 53 is a portion in which an arc portion corresponding to an angle of about 160 to 250 degrees in the axial center of the header collecting pipe main body 50 extends in the longitudinal direction of the header collecting pipe main body 50.
- the pipe end portion 53 may be formed by extending any one of the arc portions of the header collecting pipe body 50.
- a flat tube is inserted in the arc portion of the header collecting pipe body 50 as in the present embodiment.
- the longitudinal end on the opening 59 side may be extended in the longitudinal direction, or the longitudinal end on the baffle insertion opening 56 side may be extended in the longitudinal direction.
- the pipe end portion 53 has a drain groove 52 and a locking portion 70.
- the drainage groove 52 has a shape in which a part of the upper end surface 53a of the pipe end portion 53 is cut away from the longitudinal end of the header collecting pipe body 50 toward the side opposite to the longitudinal end. ing.
- the depth of the drainage groove 52 (the position of the lower end portion 52 a) is such that the pipe end portion 53 and the upper end surface 51 c of the portion other than the drainage groove 52 of the header collecting pipe body 50 and the length of the header collecting pipe body 50 are long. It is formed to be the same height position in the direction. As a result, the water present on the upper surface of the baffle 60 and surrounded by the pipe end portion 53 is drained with the drain groove 52 directed radially outward.
- the locking portion 70 includes a first locking portion 71 extending at a top end portion of the pipe end portion 53 so as to be separated along a circumferential direction on one side from a portion where the drainage groove 52 is formed, And a second locking portion 72 extending away from the portion where the drainage groove 52 is formed along the circumferential direction of the other side.
- the vertical width of the locking portion 70 is configured to be as short as the width of the baffle 60 in the plate thickness direction.
- the first locking portion 71 includes an upper surface 71a constituting the same surface as the upper end surface 53a of the tube end portion 53, a lower surface 71c facing downward, and a circumferential surface 71b facing the circumferential direction.
- the lower surface 71 c of the first locking portion 71 is located above the upper end surface 51 c of the header collecting pipe body 50 and below the upper surface 71 a of the first locking portion 71.
- the circumferential surface 71 b of the first locking portion 71 is configured such that the surface facing the circumferential direction extends from the upper end surface 51 c of the header collecting pipe body 50 to the upper surface 71 a of the first locking portion 71.
- the circumferential surface 71b of the first locking portion 71 is a surface facing the circumferential direction of the pipe end portion 53 below the first locking portion 71 (the first locking portion is more than the second locking portion 72).
- the circumferential end surface 53b of the pipe end portion 53 is further away from the circumferential surface 53b, which is the surface closer to the portion 71).
- the lower surface 71c of the first locking portion 71 and the upper end surface 51c of the header collecting pipe body 50 are a distance slightly larger than the width in the plate thickness direction of the baffle 60 described later (the baffle insertion opening). A distance equal to the vertical width of 56) is secured.
- the second locking portion 72 has the same shape as the first locking portion 71 and is provided so as to be an axial object with respect to the first locking portion 71. That is, the second locking portion 72 includes an upper surface 72a that forms the same surface as the upper end surface 53a of the pipe end portion 53, a lower surface 72c that faces downward, and a circumferential surface 72b that faces the circumferential direction. ,have.
- the lower surface 72 c of the second locking portion 72 is located above the upper end surface 51 c of the header collecting pipe body 50 and below the upper surface 72 a of the second locking portion 72.
- the circumferential surface 72b of the second locking portion 72 is configured such that the surface facing the circumferential direction is continuous in the vertical direction from the upper end surface 51c of the header collecting pipe body 50 to the upper surface 72a of the second locking portion 72. Yes.
- the circumferential surface 72b of the second locking portion 72 is a surface facing the circumferential direction of the pipe end portion 53 below the second locking portion 72 (the second locking portion is more than the first locking portion 71). It is further provided away from the circumferential surface 53c which is the surface closer to the portion 72) in the direction in which the circumferential surface 53c of the tube end portion 53 is directed.
- the lower surface 72c of the second locking portion 72 is a distance slightly larger than the width in the plate thickness direction of the baffle 60 (described later) (baffle insertion opening) between the lower surface 72c of the header collecting pipe body 50 and the upper end surface 51c. A distance equal to the vertical width of 56) is secured.
- FIG. 12 shows an external perspective view of the baffle 60.
- FIG. 13 shows a schematic plan view of the baffle 60.
- FIG. 14 is a schematic side view of the baffle 60 when viewed from the left side in FIG.
- the baffle 60 is used as a partition plate and a lid member.
- the baffle 60 as the partition plate and the baffle 60 as the lid member all have the same shape, size, and material, and are manufactured as the same part. Since the shape and the like are made common in this way, the manufacturing cost can be suppressed by reducing the types of components.
- the baffle 60 includes a baffle body 61, a convex portion 63, a first locked portion 64, and a second locked portion 65.
- the baffle 60 is used to divide the flow path by being inserted into the baffle tip opening 54 of the header collecting pipe body 50 with the side on which the convex portion 63 is provided as the insertion side. It can also be used as a member for closing the end.
- the baffle body 61 is a substantially plate-like substantially circular member made of aluminum or an aluminum alloy, and is preferably the same material as that of the header collecting pipe body 50 in order to maintain a good brazed state.
- the baffle body 61 has a semicircular part that is approximately the same as the outer shape of the header collecting pipe body 50 and a semicircular part that is approximately the same as the inner diameter of the header collecting pipe body 50.
- the semicircular portion having the same diameter as the outer diameter of the header collecting pipe main body 50 is attached to the header collecting pipe main body 50 and is located along the outer peripheral face 51a of the header collecting pipe main body 50 in the anti-insertion direction outer peripheral face 61a. have.
- a semicircular portion of the same size as the inner diameter of the header collecting pipe main body 50 is attached to the header collecting pipe main body 50 and is located on the outer periphery in the first insertion direction so as to face the inner peripheral surface 51b of the header collecting pipe main body 50. It has the surface 61b and the 2nd insertion direction outer peripheral surface 61c.
- the baffle body 61 has a substantially circular first surface 61d and a substantially circular second surface 61e facing the opposite side of the first surface 61d.
- the convex portion 63 has a shape protruding in the radial direction from between the first insertion direction outer peripheral surface 61 b and the second insertion direction outer peripheral surface 61 c of the baffle main body 61 in the circumferential portion of the baffle main body 61.
- the convex part 63 has the front end surface 63a facing the protruding direction at the front end.
- the first surface 61d of the baffle body 61 extends above the convex portion 63, and the lower surface of the convex portion 63 includes a portion on the same plane as the second surface 61e of the baffle main body 61. ing.
- the circumferential width of the convex portion 63 is approximately the same as the plate thickness of the baffle body 61.
- the convex portion 63 has a tip surface 63 a that forms the outside of the baffle 60, and a first convex portion side surface 63 b and a second convex portion side surface 63 c that form the circumferential side surface of the convex portion 63.
- the 1st convex part side surface 63b is connected with the 1st insertion direction outer peripheral surface 61b.
- the 2nd convex part side surface 63c is connected with the 2nd insertion direction outer peripheral surface 61c.
- the front end surface 63a of the convex portion 63 includes a boundary portion with the first convex portion side surface 63b, a boundary portion with the second convex portion side surface 63c, a boundary portion with the first surface 61d of the baffle body 61, and the baffle body 61.
- the boundary portion with the second surface 61e is processed so as to have a rounded shape. As described above, since the convex portion 63 is processed into a rounded shape, it is difficult to be caught when the header collecting pipe main body 50 is inserted into the baffle tip opening 54, thereby enabling smooth insertion. ing.
- the first locked portion 64 is a radially outer end of a semicircular portion of the baffle body 61 that is approximately the same as the outer shape of the header collecting pipe body 50, and is approximately the same as the inner diameter of the header collecting pipe body 50. It is provided so that it may be located in one of the boundary parts with a semicircle part, and the 2nd to-be-latched part 65 is provided so that it may be located in the other of the said boundary part.
- the first locked portion 64 is formed so that the surface on the second surface 61e side of the baffle 60 is warped upward toward the second surface 61e side of the baffle 60 as it goes from the insertion direction to the anti-insertion direction. It has a locked surface 64a.
- the first locked portion 64 is formed so that the surface on the first surface 61d side of the baffle 60 is warped upward toward the second surface 61e side of the baffle 60 from the insertion direction toward the anti-insertion direction. 1 It has the upper locked surface 64c.
- the first locked portion 64 has a first insertion direction surface 64b that connects the first lower locked surface 64a and the first upper locked surface 64c in the plate thickness direction and faces the insertion direction. .
- the second locked portion 65 is the same as the first locked portion 64, and has the shape of the first locked portion 64 and the axial object. That is, the second locked portion 65 is formed so that the surface on the second surface 61e side of the baffle 60 is warped upward toward the second surface 61e side of the baffle 60 from the insertion direction toward the anti-insertion direction. 2 It has a lower locked surface 65a. Further, the second locked portion 65 is a second upper cover formed so that the surface on the first surface 61d side of the baffle 60 is warped upward toward the second surface 61e as it goes from the insertion direction to the anti-insertion direction. It has a locking surface 65c.
- the second locked portion 65 has a second insertion direction surface 65b that connects the second lower locked surface 65a and the second upper locked surface 65c in the plate thickness direction and faces the insertion direction. . (4-4) Mating closed state by baffle near end of header collecting pipe main body
- FIG. 15 is a schematic side view showing a state where the baffle 60 is inserted until immediately before plastic deformation.
- FIG. 16 is a schematic side view showing a state where the insertion is completed with the baffle 60 being plastically deformed.
- FIG. 17 is an external perspective view showing a state of the insertion destination side in a state where a baffle 60 as a partition plate is inserted and fixed to the header collecting pipe body 50.
- FIGS. 17 and 18 are an external perspective view showing a state opposite to the insertion destination in a state where a baffle 60 as a partition plate is inserted and fixed in the header collecting pipe main body 50.
- the baffle 60 is hatched so as to be distinguished from the header collecting pipe body 50 for easy understanding.
- the baffle 60 as a partition plate is inserted through the baffle insertion opening 56 of the header collecting pipe body 50 so that the convex portion 63 is at the leading end in the insertion direction, and the first lower locked surface 64a and the second lower locked surface. It is inserted until the state immediately before the plastic deformation occurs in the locked surface 65a (refer to the contact portion P between the baffle 60 and the header collecting pipe body 50 in FIG. 15). Further, the baffle 60 as the partition plate is further inserted, and the first lower locked surface 64a and the second lower locked surface 65a are elastically directed toward the surface of the baffle 60 on the first surface 61d side. The deformed state (see the contact portion P ′ between the baffle 60 and the header collecting pipe body 50 in FIG.
- the first locked portion 64 and the second locked portion 65 of the baffle 60 are inserted into the baffle.
- the outer peripheral portion of the opening 56 is reached, it is sandwiched between the upper and lower surfaces of the baffle insertion opening 56 from above and below, and is locked before it is completely inserted (baffle).
- the first locked portion 64, the second locked portion 65, and / or the thick upper surface 56d and the thick lower surface 56e of the baffle insertion opening 56 of the header collecting pipe body 50 exert forces.
- the baffle 60 is stably fixed, but by further pushing the baffle 60 into the back of the baffle insertion opening 56, the first insertion direction outer peripheral surface 61 b and the second insertion direction outer peripheral surface of the convex portion 63. 61c is in surface contact with the inner circumferential surface 51b on the radially inner side of the header collecting pipe body 50 in the radial direction, and at the same time, the first insertion direction surface 64b of the first locked portion 64 of the baffle 60 is in contact with the header collecting pipe body 50. Surface contact is made with the thick contact surface 56b.
- the convex portion 63 of the baffle 60 is moved from the vertical direction and the circumferential direction by the cylindrical inner surface 54b of the baffle tip opening 54 of the header collecting pipe body 50. Located in a covered place.
- the first convex side surface 63b, the second convex side surface 63c, the first surface 61d, the second surface 61e, and their boundary portions of the convex portion 63 of the baffle 60 are for the baffle tip of the header collecting pipe body 50.
- the state comes into contact with the surface of the cylindrical inner surface 54b of the opening 54, and the baffle 60 is supported by the header collecting pipe body 50 at both the non-insertion side end and the insertion side tip.
- the front end surface 63 a of the convex portion 63 is located on the substantially same plane as the outer peripheral surface 51 a on the radially outer side of the header collecting pipe body 50.
- the tip surface 63a of the convex portion 63 may have a dimensional shape that is positioned on the radially outer side of the outer peripheral surface 51a on the radially outer side of the header collecting pipe body 50, or the inner surface of the baffle tip opening 54. The dimension shape located between the thickness width of the header collecting pipe main body 50 may be sufficient.
- the brazing material 51 provided on the outer peripheral surface of the header collecting pipe main body 50 is drawn into the joint portion between the baffle tip opening 54 and the convex portion 63.
- the vicinity of the outer peripheral surface opposite to the insertion direction of the baffle 60 is sandwiched from above and below by the thick upper surface 56d and the thick lower surface 56e of the baffle insertion opening 56 of the header collecting pipe body 50.
- the counter-insertion direction outer peripheral surface 61a of the baffle 60 is located on substantially the same plane as the outer peripheral surface 51a of the header collecting pipe body 50 in the radial direction.
- the header collecting pipe body 50 in which the baffle 60 is temporarily fixed is brazed in the furnace by being placed in the furnace.
- the baffle 60 is prevented from falling out of the temporary fixed state. It is possible.
- Such a temporarily fixed state can be achieved simply by providing the first locked portion 64 and the second locked portion 65 on the baffle 60.
- the baffle 60 has a shape and size accuracy of the baffle insertion opening 56. Therefore, the manufacturing cost can be reduced.
- the convex portion 63 of the baffle 60 calls the brazing material 51 provided on the outer peripheral surface of the header collecting pipe body 50 into the joint portion between the baffle tip opening 54 and the convex portion 63. it can.
- the brazing material 51 can be drawn from various directions including the upper, lower and circumferential directions with respect to the tip surface 63a of the convex portion 63 in the outer peripheral surface 51a of the header collecting pipe body 50. . For this reason, the path length for drawing the brazing material 51 to the vicinity of the front end in the insertion direction of the baffle 60 can be shortened compared to the mode in which the convex portion 63 and the baffle front end opening 54 are not provided.
- Sufficient brazing material 51 can be drawn into the joint near the tip in the insertion direction, and the brazing strength can be increased. Further, in a mode in which the convex portion 63 and the baffle tip opening 54 are not provided, it is difficult to visually recognize from the outer periphery of the header collecting pipe body 50. It is possible to easily visually recognize from the outer periphery of the header collecting pipe body 50 whether or not a fillet made of the brazing material 51 is formed in the vicinity of the joining portion. Further, the brazing material 51 in the peripheral portion of the header collecting pipe main body 50 can be easily drawn into the joint portion between the outer circumferential surface 61 a in the anti-insertion direction of the baffle 60 and the outer peripheral surface 51 a of the header collecting pipe main body 50.
- FIG. 19 shows a state where the vicinity of the end of header collecting pipe main body 50 is blocked by baffle 60 as a lid member.
- the external appearance perspective view which shows is shown.
- FIG. 20 shows a side sectional view in the same state. In FIG. 19 and FIG. 20, the baffle 60 is hatched to distinguish it from the header collecting pipe body 50 for easy understanding.
- the baffle 60 as a lid member is inserted in a horizontal direction between the upper end surface 51c of the header collecting pipe body 50 and the lower surfaces 71c and 72c of the locking portion 70 so that the convex portion 63 becomes the front end in the insertion direction. By this, it will be in a temporarily fixed state.
- the first locked portion 64 and the first locked portion 64 of the baffle 60 are arranged. 2
- the locked portion 65 reaches the locking portion 70, it is completely in the state where it is sandwiched from above and below by the upper end surface 51c of the header collecting pipe body 50 and the lower surfaces 71c and 72c of the locking portion 70. It is in a locked state before it is inserted (the first locked portion 64, the second locked portion 65 of the baffle 60, and / or the upper end surface 51c of the header collecting pipe body 50 and the engagement).
- the lower surfaces 71c and 72c of the stop portion 70 are in a state of being plastically deformed while leaving the residual stress by applying force. Even in this state, the baffle 60 is stably fixed. However, when the baffle 60 is further pushed inward, the first insertion direction outer peripheral surface 61b and the second insertion direction outer peripheral surface 61c of the baffle 60 become the header collecting pipe main body.
- the first insertion direction surface 64 b of the first locked portion 64 of the baffle 60 is in surface contact with the circumferential surface 53 b of the pipe end portion 53 simultaneously with the surface contact in the radial direction with the inner peripheral surface 51 b on the radially inner side of 50.
- the convex portion 63 of the baffle 60 is positioned above the lower end portion 52 a of the drainage groove 52 provided in the pipe end portion 53.
- the lower part of the convex part 63 of the baffle 60 may be supported by the upper surface of the lower end part 52a of the drainage groove 52 of the pipe end part 53, and in that case, the baffle 60 has an end part on the non-insertion side.
- the header collecting pipe body 50 is supported. In this case, compared to a structure (backlash structure) supported only by either the non-insertion side end or the insertion side tip, it should be less likely to drop out and be stably held. Is done.
- the front end surface 63 a of the convex portion 63 is located on the substantially same plane as the outer peripheral surface 51 a on the radially outer side of the header collecting pipe body 50.
- the tip surface 63 a of the convex portion 63 may have a dimension shape that is located radially outside the outer peripheral surface 51 a on the radially outer side of the header collecting pipe body 50, or the upper surface of the lower end portion 52 a of the drain groove 52
- the dimension shape located between the thickness width of the pipe end part 53 may be sufficient.
- the header collecting pipe body 50 in which the baffle 60 as the lid member is temporarily fixed is brazed in the furnace by being placed in the furnace. Specifically, both the baffle 60 as the partition plate and the baffle 60 as the lid member are temporarily fixed, and then put into the furnace. The baffle 60 can also be prevented from falling out of the temporarily fixed state even if there is an impact during transportation until the baffle 60 is moved into the furnace after temporary fixing.
- Such a temporarily fixed state can be realized only by providing the first locked portion 64 and the second locked portion 65 on the baffle 60.
- the accuracy of the shape and dimensions of the baffle 60 is as follows. The manufacturing cost can be reduced because it is not required to the extent that it exactly conforms to the shape between the upper end surface 51c and the lower surfaces 71c and 72c of the locking portion 70.
- the convex portion 63 of the baffle 60 is provided on the outer peripheral surface of the header collecting pipe main body 50 at a portion where the baffle 60 as a lid member is brazed and fixed to the header collecting pipe main body 50 by the above configuration.
- the brazing material 51 can be drawn into the joint portion between the drainage groove 52 and the convex portion 63.
- the brazing of the baffle 60 in the vicinity of the convex portion 63 is not only the brazing material 51 provided on the lower portion of the front end surface 63a of the convex portion 63 in the outer peripheral surface 51a of the header collecting pipe body 50, but also the pipe end portion.
- the brazing material 51 provided in the circumferential position adjacent to the circumferential direction 53 and the brazing material 51 provided above can also be pulled in, so that sufficient brazing strength can be secured and reliability can be improved.
- the brazing material 51 on the outer peripheral surface 51a of the header collecting pipe main body 50 is liquefied in the furnace and passes through the gap between the header collecting pipe main body 50 and the baffle 60 due to surface tension, so that the upper surface of the baffle 60 is increased.
- the fillet F formed at a position along the inner peripheral surface 51b of the header collecting pipe body 50 can be easily seen from above, and it is easy to ensure that the brazing material 51 is sufficiently drawn. It is possible to improve reliability.
- the outdoor heat exchanger 20 of the present embodiment is configured so that the top surface of the baffle 60 is in a state where the baffle 60 as a lid member is attached to the header collecting pipe body 50.
- the tube end portion 53 is located at least partially.
- the joint portion between the baffle 60 and the header collecting pipe body 50 is not limited to the lower surface of the baffle as in the conventional example, and the joint portion can also be provided on the upper surface side. Thereby, the joining strength of the header collecting pipe main body 50 and the baffle 60 as a cover member can be improved.
- the pipe end portion 53 of the header collecting pipe body 50 does not cover the entire upper surface on the radially outer side of the baffle 60 as a lid member, but covers at least a part of the inside of the header collecting pipe body 50.
- a drainage groove 52 that connects the peripheral surface 51b and the outer peripheral surface 51a in the radial direction is formed. For this reason, even if dew condensation water or rainwater exists inside the tube end portion 53 and on the upper surface side of the baffle 60 as a lid member, it can be discharged immediately. For this reason, corrosion of the metal header collecting pipe main body 50 and the baffle 60 as the lid member can be suppressed. Moreover, the ice-up by the said water freezing can be suppressed.
- the outdoor heat exchanger 20 employing the drainage groove 52 functions as a refrigerant evaporator in a refrigeration cycle, condensed water is likely to be generated. It is possible to drain water efficiently.
- drain port 72x may be formed instead of the drain groove 52 of the above embodiment. Even in these cases, it is possible to ensure water drainage in the space above the baffle 60 as the lid member and inside the pipe end portion 53.
- Modification B In the above embodiment, the lower end portion 52 a of the drainage groove 52 and the upper end surface 51 c of the portion other than the pipe end portion 53 of the header collecting pipe body 50 are at the same height position in the longitudinal direction of the header collecting pipe body 50. The case has been described as an example. However, the present invention is not limited to this. For example, as shown in FIG.
- a baffle 360 as a lid member that does not have a shape corresponding to the convex portion 63 of the above embodiment, and a lid member as The drainage structure may be configured using the header collecting pipe main body 350 including the pipe end portion 353 having the drainage groove 352 that is lost above a part of the radially outer end of the baffle 360. Even in this case, sufficient drainage can be ensured.
- Air conditioning equipment (refrigeration equipment) 2 Air conditioning outdoor unit 3 Air conditioning indoor unit 10 Unit casing 20 Outdoor heat exchanger (heat exchanger) 21 Heat Exchanger 21a Heat Transfer Fin (Fin) 21b Flat multi-hole tube (flat tube) 22, 23 Header collecting pipe 31 Gas refrigerant pipe 32 Liquid refrigerant pipe 40 Expansion valve 50 Header collecting pipe body 52 Drain groove (drain section, groove) 52a Lower end portion 53 Pipe end portion 60 Baffle (lid member)
Abstract
Description
当該特許文献1(特開2010-112580号公報)に記載の熱交換器では、ヘッダ集合管の内部空間を上下に仕切る仕切り板を設けることで、1対のヘッダ集合管の間を冷媒流れが往復するように構成されている。 Conventionally, for example, a heat exchanger having a pair of header collecting pipes and a plurality of tubes communicating with each other like the heat exchanger described in Patent Document 1 (Japanese Patent Laid-Open No. 2010-112580) Has been proposed.
In the heat exchanger described in Patent Document 1 (Japanese Patent Application Laid-Open No. 2010-112580), a refrigerant flow is provided between a pair of header collecting pipes by providing a partition plate that divides the internal space of the header collecting pipe up and down. It is configured to reciprocate.
例えば、上記熱交換器のヘッダ集合管の上端について、ヘッダ集合管本体に対して蓋部材を固着させている例が考えられるが、その場合の接合部分は、蓋部材の径方向周辺とヘッダ集合管本体の内面だけであるため、接合強度を高めることが難しい。
これに対して、蓋部材とヘッダ集合管本体との接合部分をより広く確保するために、例えば、ヘッダ集合管本体の端部よりも内側に開口を形成し、当該開口を介して蓋部材を挿入させ、両者を固着させることも考えられる。ところが、この場合には、蓋部材の上面がヘッダ集合管本体の内周面によって囲まれた空間が生じてしまう。そして、熱交換器に付着した結露水や雨水等が当該空間に入り込んでしまった場合には、その水を当該空間外に排出することが困難になってしまい、その水周りの部材の腐食が生じる問題、もしくは、氷が成長してしまう問題がある。 In the heat exchanger described in Patent Document 1 (Japanese Patent Laid-Open No. 2010-112580) described above, there is room for improvement in the shape of the upper end portion of the header collecting pipe.
For example, an example in which a lid member is fixed to the header collecting pipe body with respect to the upper end of the header collecting pipe of the heat exchanger can be considered. Since it is only the inner surface of the tube body, it is difficult to increase the bonding strength.
On the other hand, in order to secure a wider joint portion between the lid member and the header collecting pipe body, for example, an opening is formed inside the end portion of the header collecting pipe body, and the lid member is inserted through the opening. It is possible to insert them and fix them together. However, in this case, a space is created in which the upper surface of the lid member is surrounded by the inner peripheral surface of the header collecting pipe body. And when condensed water, rain water, etc. adhering to the heat exchanger enter the space, it becomes difficult to discharge the water out of the space, and corrosion of members around the water There are problems that occur or ice grows.
なお、複数の扁平管は、特に限定されないが、例えば、側面が対向するように配列されていてもよい。
この熱交換器では、ヘッダ集合管本体に設けられた排水部を介して、蓋部材の上方に存在しうる結露水や雨水等を排水させることができる。このため、ヘッダ集合管の上端近傍における腐食を生じにくくすることが可能になる。 A heat exchanger according to a first aspect of the present invention includes a plurality of flat tubes, a header collecting pipe to which the flat tubes are connected, and a plurality of fins joined to the flat tubes, A heat exchanger in which a fluid flowing inside exchanges heat with air flowing outside the flat tube, and the header collecting pipe includes a header collecting pipe body and a lid member. The header collecting pipe body is provided such that the longitudinal direction is the vertical direction. The lid member is provided inside the upper end of the header collecting pipe body and closes the upper side of the header collecting pipe body. The header collecting pipe body has a pipe end portion extending upward from the lid member. A drainage part is formed in a part of the pipe end part.
The plurality of flat tubes are not particularly limited, but may be arranged so that the side surfaces face each other, for example.
In this heat exchanger, it is possible to drain condensed water, rainwater, and the like that may exist above the lid member via a drainage section provided in the header collecting pipe body. For this reason, it becomes possible to make it difficult to produce corrosion in the vicinity of the upper end of the header collecting pipe.
この熱交換器では、ヘッダ集合管本体のうち管端部分の一部を下方に凹ませて溝を形成させることで排水部を形成することができるため、製造が容易になる。 In the heat exchanger according to the second aspect of the present invention, in the heat exchanger according to the first aspect, the drainage portion is a groove formed such that a part of the pipe end portion is recessed downward.
In this heat exchanger, since the drainage portion can be formed by forming a groove by denting a part of the pipe end portion of the header collecting pipe main body downward, manufacture becomes easy.
この熱交換器は、排水溝が蓋部材の上端部よりも低い部分を有しているため、蓋部材の上方に溜まる水の量を全て排出させることが可能になる。 The heat exchanger which concerns on the 3rd viewpoint of this invention is a heat exchanger which concerns on a 2nd viewpoint, The lower end part of a drainage groove is located below rather than the upper end part of a cover member.
In this heat exchanger, since the drainage groove has a portion lower than the upper end portion of the lid member, it is possible to discharge all the amount of water accumulated above the lid member.
この熱交換器では、蓋部材の上方は管端部分と接触した部分を有しており、蓋部材の下方はヘッダ集合管本体のうち管端部分以外の部分と接触した部分を有している。このため、ヘッダ集合管本体と蓋部材との固着をより強固させることが可能になっている。 A heat exchanger according to a fourth aspect of the present invention is the heat exchanger according to any one of the first to third aspects, wherein at least a part of the outer peripheral portion of the lid member is other than the pipe end portion of the header collecting pipe. Is sandwiched from above and below between a portion of the tube and the tube end portion.
In this heat exchanger, the upper part of the lid member has a part in contact with the pipe end part, and the lower part of the lid member has a part in contact with the part other than the pipe end part of the header collecting pipe main body. . For this reason, it is possible to further strengthen the fixation between the header collecting pipe body and the lid member.
この冷凍装置では、第2熱交換器が冷媒の蒸発器として機能する際に、ヘッダ集合管の上端部分に結露水が溜まり込むことがあったとしても、排水部を介して容易に排水させることが可能になる。 In the refrigeration apparatus according to the fifth aspect of the present invention, the compressor, the first heat exchanger, the expansion valve, and the second heat exchanger that is any one of the heat exchangers of the first to fourth aspects are connected to each other. The refrigerant circuit comprised by being made is provided. The refrigerant circuit can cause the second heat exchanger to function as at least a refrigerant evaporator.
In this refrigeration system, when the second heat exchanger functions as a refrigerant evaporator, even if condensed water may accumulate in the upper end portion of the header collecting pipe, it can be easily drained through the drainage section. Is possible.
本発明の第2観点に係る熱交換器では、製造が容易になる。
本発明の第3観点に係る熱交換器では、蓋部材の上方に溜まる水の量を全て排出させることが可能になる。
本発明の第4観点に係る熱交換器では、ヘッダ集合管本体と蓋部材との固着をより強固させることが可能になっている。
本発明の第5観点に係る冷凍装置では、ヘッダ集合管の上端部分に結露水が溜まり込むことがあったとしても、排水部を介して容易に排水させることが可能になる。 In the heat exchanger according to the first aspect of the present invention, corrosion near the upper end of the header collecting pipe can be made difficult to occur.
The heat exchanger according to the second aspect of the present invention is easy to manufacture.
In the heat exchanger according to the third aspect of the present invention, it is possible to discharge all the amount of water accumulated above the lid member.
In the heat exchanger according to the fourth aspect of the present invention, it is possible to further firmly fix the header collecting pipe body and the lid member.
In the refrigeration apparatus according to the fifth aspect of the present invention, even if condensed water may accumulate in the upper end portion of the header collecting pipe, it can be easily drained through the drainage section.
図1は、本発明の一実施形態に係る空気調和装置の構成の概要を示す回路図である。
空気調和装置1は、蒸気圧縮式の冷凍サイクル運転を行うことによって空調室内機3が設置されている建物内の冷暖房に使用される装置であり、熱源側ユニットとしての空調室外機2と、利用側ユニットとしての空調室内機3とが冷媒連絡配管6,7で接続されて構成されている。
空調室外機2と空調室内機3と冷媒連絡配管6,7とが接続されて構成される冷媒回路は、圧縮機91、四路切換弁92、室外熱交換器20、膨張弁40、室内熱交換器4およびアキュムレータ93などが冷媒配管で接続されることで構成されている。この冷媒回路内には冷媒が封入されており、冷媒が圧縮され、冷却され、減圧され、加熱・蒸発された後に、再び圧縮されるという冷凍サイクル運転が行われるようになっている。冷媒としては、例えば、R410A、R407C、R22、R134a、二酸化炭素、などから選択されたものが用いられる。 (1) Overall Configuration of Air Conditioner FIG. 1 is a circuit diagram illustrating an outline of a configuration of an air conditioner according to an embodiment of the present invention.
The
The refrigerant circuit configured by connecting the air-conditioning
(2-1)空調室内機
空調室内機3は、室内の壁面に壁掛け等により、又は、ビル等の室内の天井に埋め込みや吊り下げ等により設置される。空調室内機3は、室内熱交換器4と、室内ファン5とを有している。室内熱交換器4は、例えば伝熱管と多数のフィンとにより構成されたクロスフィン式のフィン・アンド・チューブ型熱交換器であり、冷房運転時には冷媒の蒸発器として機能して室内空気を冷却し、暖房運転時には冷媒の凝縮器として機能して室内空気を加熱する熱交換器である。
(2-2)空調室外機
空調室外機2は、ビル等の室外に設置されており、冷媒連絡配管6,7を介して空調室内機3に接続される。空調室外機2は、図2および図3に示されているように、略直方体状のユニットケーシング10を有している。 (2) Detailed configuration of air conditioner (2-1) Air-conditioning indoor unit The air-conditioning
(2-2) Air Conditioning Outdoor Unit The air conditioning
ユニットケーシング10は、底板12と、天板11と、送風機室側の側板13と、機械室側の側板14と、送風機室側前板15と、機械室側前板16とを備えて、筐体を構成している。 As shown in FIG. 3, the air conditioner
The
圧縮機91は、例えば圧縮機用モータによって駆動される密閉式圧縮機であり、運転容量を可変することができるよう構成されている。
四路切換弁92は、冷媒の流れの方向を切り換えるための機構である。冷房運転時には、四路切換弁92は、圧縮機91の吐出側の冷媒配管と室外熱交換器20の一端(ガス側端部)から延びるガス冷媒配管31とを接続するとともに、アキュムレータ93を介してガス冷媒の冷媒連絡配管7と圧縮機91の吸入側の冷媒配管とを接続する(図1の四路切換弁92の実線を参照)。また、暖房運転時には、四路切換弁92は、圧縮機91の吐出側の冷媒配管とガス冷媒の冷媒連絡配管7とを接続するとともに、アキュムレータ93を介して圧縮機91の吸入側と室外熱交換器20の一端(ガス側端部)から延びるガス冷媒配管31とを接続する(図1の四路切換弁92の破線を参照)。 The air conditioner
The
The four-
アキュムレータ93は、四路切換弁92と圧縮機91との間に接続されている。アキュムレータ93は、冷媒を気相と液相とに分ける気液分離機能を具備している。アキュムレータ93に流入する冷媒は、液相と気相とに分かれ、上部空間に集まる気相の冷媒が圧縮機91へと供給される。 The
The
膨張弁40は、冷媒回路において冷媒を減圧するための機構であり、開度調整が可能な電動弁である。膨張弁40は、冷媒圧力や冷媒流量の調節を行うために、室外熱交換器20と液冷媒の冷媒連絡配管6の間に設けられ、冷房運転時および暖房運転時のいずれにおいても、冷媒を膨張させる機能を有している。
室外ファン95は、送風機室S1に室外熱交換器20に対向して配置されている。室外ファン95は、ユニット内に室外空気を吸入して、室外熱交換器20において冷媒と室外空気との間で熱交換を行わせた後に、熱交換後の空気を室外に排出する。この室外ファン95は、室外熱交換器20に供給する空気の風量を可変することが可能なファンであり、例えば、DCファンモータ等からなるモータによって駆動されるプロペラファン等である。 The
The
The
(3-1)冷房運転
冷房運転時は、四路切換弁92が図1の実線で示される状態、すなわち、圧縮機91の吐出側がガス冷媒配管31を介して室外熱交換器20のガス側に接続され、かつ、圧縮機91の吸入側がアキュムレータ93、冷媒連絡配管7を介して室内熱交換器4のガス側に対して接続された状態となっている。膨張弁40は、室内熱交換器4の出口(すなわち、室内熱交換器4のガス側)における冷媒の過熱度が一定になるように開度調節されるようになっている。この冷媒回路の状態で、圧縮機91、室外ファン95および室内ファン5を運転すると、低圧のガス冷媒は、圧縮機91で圧縮されることで高圧のガス冷媒となる。この高圧のガス冷媒は、四路切換弁92を経由して室外熱交換器20に送られる。その後、高圧のガス冷媒は、室外熱交換器20において、室外ファン95によって供給される室外空気と熱交換を行って凝縮して高圧の液冷媒となる。そして、過冷却状態になった高圧の液冷媒は、室外熱交換器20から膨張弁40に送られる。膨張弁40によって圧縮機91の吸入圧力近くまで減圧されて低圧の気液二相状態となった冷媒は、室内熱交換器4に送られ、室内熱交換器4において室内空気と熱交換を行って蒸発して低圧のガス冷媒となる。 (3) Operation of the air conditioner (3-1) Cooling operation During the cooling operation, the four-
(3-2)暖房運転
暖房運転時は、四路切換弁92が図1の破線で示される状態、すなわち、圧縮機91の吐出側が冷媒連絡配管7を介して室内熱交換器4のガス側に接続され、かつ、圧縮機91の吸入側がガス冷媒配管31を介して室外熱交換器20のガス側に接続された状態となっている。膨張弁40は、室内熱交換器4の出口における冷媒の過冷却度が過冷却度目標値で一定になるように開度調節されるようになっている。この冷媒回路の状態で、圧縮機91、室外ファン95および室内ファン5を運転すると、低圧のガス冷媒は、圧縮機91に吸入されて圧縮されて高圧のガス冷媒となり、四路切換弁92、および、冷媒連絡配管7を経由して、空調室内機3に送られる。 This low-pressure gas refrigerant is sent to the air-conditioning
(3-2) Heating Operation During the heating operation, the four-
(4)室外熱交換器の詳細構成
(4-1)室外熱交換器の全体構成
次に、室外熱交換器20の外観概略斜視図を示す図4、室外熱交換器の模式的な背面図を示す図5、および、概略背面図である図6を用いて室外熱交換器20の構成について詳細に説明する。 Then, the high-pressure gas refrigerant sent to the air conditioning
(4) Detailed Configuration of Outdoor Heat Exchanger (4-1) Overall Configuration of Outdoor Heat Exchanger Next, FIG. 4 showing a schematic external perspective view of the
室外熱交換器20は、熱交換部21の両端に各1本設けられたアルミニウム製のヘッダ集合管22,23を備えている。
ヘッダ集合管22は、第1バッフル22cによって上下方向に仕切られた内部空間22a,22bを有している。上部の内部空間22aには、ガス冷媒配管31が接続され、下部の内部空間22bには、液冷媒配管32が接続されている。 The
The
The
なお、本実施形態では、上記各バッフルは、ヘッダ集合管本体50の仕切り板として用いられるだけでなく、蓋部材としても用いられる部品であり、これらの共通形状を説明をする際には、後述のように代表してバッフル60として説明する。 The interior of the
In the present embodiment, each of the baffles is a component that is used not only as a partition plate of the header collecting
図7は、室外熱交換器20の熱交換部21の扁平多穴管21bの扁平方向に対して垂直な平面における断面構造を示す部分拡大図である。また、図8は、室外熱交換器20における伝熱フィン21aの取付状態を示す概略斜視図である。
伝熱フィン21aは薄いアルミニウム製もしくはアルミニウム合金製の平板であり、各伝熱フィン21aには水平方向に延びる扁平管挿入用の切り欠き21aaが上下方向に並べて複数形成されている。なお、伝熱フィン21aは、空気流れの上流側に向けて突出した部分を無数に有するように取り付けられている。
扁平多穴管21bは、伝熱面となる上下の平面部と、冷媒が流れる複数の内部流路21baを有している。切り欠き21aaの上下の幅よりもわずかに厚い扁平多穴管21bは、平面部を上下に向けた状態で、間隔をあけて複数段配列され、切り欠き21aaに嵌め込まれた状態で仮固定される。このように、伝熱フィン21aの切り欠き21aaに扁平多穴管21bが嵌め込まれた仮固定の状態で、伝熱フィン21aと扁平多穴管21bとがロウ付けされる。また、各扁平多穴管21bの両端は、それぞれヘッダ集合管22,23に嵌め込まれてロウ付けされる。そのため、ヘッダ集合管22の内部空間22a,22bやヘッダ集合管23の内部空間23a,23b,23c,23d,23eと扁平多穴管21bの内部流路21baとが繋がっている。 (4-2) Configuration of Heat Exchanger FIG. 7 is a partially enlarged view showing a cross-sectional structure in a plane perpendicular to the flat direction of the flat
The
The flat
(4-3)ヘッダ集合管の構成
以下、ヘッダ集合管22、23のうち主として端部周辺の構成について説明するが、この端部の構成はヘッダ集合管22、23において異なるところが無いため、以下、ヘッダ集合管22を代表して説明し、ヘッダ集合管23についての説明を省略する。
ヘッダ集合管22は、ヘッダ集合管本体50と、蓋部材としてのバッフル60および仕切り板としてのバッフル60を有している。
(4-3-1)ヘッダ集合管本体
図9に、ヘッダ集合管本体50の上端部分近傍を示す外観斜視図を示す。図10に、ヘッダ集合管本体の扁平多穴管が接続される側から見た側面図を示す。図11に、ヘッダ集合管本体の前面視側面図を示す。 As shown in FIG. 7, since the
(4-3) Configuration of Header Collecting Pipe Hereinafter, the configuration around the end part of the
The
(4-3-1) Header Collecting Pipe Body FIG. 9 is an external perspective view showing the vicinity of the upper end portion of the header collecting
ヘッダ集合管本体50の径方向外側の外周面51aの表面には、ロウ材51が塗布されている。ロウ材51の種類は特に限定されないが、例えば、ヘッダ集合管本体50の材質およびバッフル60の材質と共に共通の材質を含んだロウ材として、アルミロウが好ましい。また、材料コストの観点から、ヘッダ集合管本体50の径方向内側の内周面51bや上下の端面にはロウ材が塗布されていないことが好ましい。
ヘッダ集合管本体50は、複数の扁平管挿入用開口59、複数のバッフル挿入用開口56、複数のバッフル先端用開口54、および、開口55が形成されている。
扁平管挿入用開口59は、扁平多穴管21bの一端を挿入するため開口であり、ヘッダ集合管本体50の端部以外の部分において径方向に開口している。この扁平管挿入用開口59は、ヘッダ集合管本体50の長手方向である上下方向に並ぶようにして複数設けられている。この扁平管挿入用開口59は、ヘッダ集合管本体50の軸心の角度が90~120度に相当する円弧部分が取り除かれるようにして形成されている。 The header collecting pipe
A
The header collecting
The flat
ヘッダ集合管本体50は、端部に、後述する蓋部材としてのバッフル60を取り付けるための管端部分53が設けられている。
管端部分53は、ヘッダ集合管本体50の軸心の角度が約160~250度に相当する円弧部分が、さらにヘッダ集合管本体50の長手方向に延びて形成されている部分である。管端部分53は、ヘッダ集合管本体50の円弧部分のうちどの部分が延びだして形成されていてもよく、例えば、本実施形態のようにヘッダ集合管本体50の円弧部分のうち扁平管挿入用開口59側の長手方向端部が長手方向に延長されて形成されていてもよいし、バッフル挿入用開口56側の長手方向端部が長手方向に延長されて形成されていてもよい。この管端部分53は、排水用溝52、および、係止部70を有している。 The
The header collecting
The
係止部70は、管端部分53の上端部において、前記排水用溝52が形成されている部分から一方側の周方向に沿って離れるように延びている第1係止部71と、前記排水用溝52が形成されている部分から他方側の周方向に沿って離れるように延びている第2係止部72と、を有している。なお、係止部70の上下方向の幅は、バッフル60の板厚方向の幅と同程度に短く構成されている。 The
The locking
図12に、バッフル60の外観斜視図を示す。図13に、バッフル60の平面視概略図を示す。図14に、図13における左側から見た場合のバッフル60の側面視概略図を示す。
バッフル60は、仕切り板として、および、蓋部材として、用いられる。本実施形態において、仕切り板としてのバッフル60と蓋部材としてのバッフル60とは、いずれも形状、寸法および材質が共通化されており、同一部品として製造されている。このように形状等を共通化させたため、部品の種類の低減化により、製造コストを抑えることができている。
このバッフル60は、バッフル本体61、凸部63、第1被係止部64、および、第2被係止部65を有している。このバッフル60は、凸部63が設けられている側を挿入側としてヘッダ集合管本体50のバッフル先端用開口54に挿入されて流路を分割するために用いることも、ヘッダ集合管本体50の端部を塞ぐ部材として用いることも可能になっている。 (4-3-2) Baffle FIG. 12 shows an external perspective view of the
The
The
(4-4)ヘッダ集合管本体の端部近傍部分のバッフルによる勘合閉鎖状態
図15に、バッフル60が塑性変形する直前まで挿入された状態を示す側面視概略図を示す。図16に、バッフル60が塑性変形した状態で挿入が完了した状態を示す側面視概略図を示す。図17に、ヘッダ集合管本体50に仕切り板としてのバッフル60が挿入固定された状態の挿入先側の様子を示す外観斜視図を示す。図18に、ヘッダ集合管本体50に仕切り板としてのバッフル60が挿入固定された状態の挿入先とは反対側の様子を示す外観斜視図を示す。なお、図17、図18では、理解の容易のため、バッフル60にハッチングを施して、ヘッダ集合管本体50と区別して示している。 The second locked
(4-4) Mating closed state by baffle near end of header collecting pipe main body FIG. 15 is a schematic side view showing a state where the
以上のようにして、バッフル60が仮止め状態となったヘッダ集合管本体50は、炉の中に入れられることで炉中ロウ付けされる。
ここで、バッフル60が仮止め状態となったヘッダ集合管本体50を、炉の中に移動させるまでの運搬時の衝撃等があっても、バッフル60が仮止め状態から抜け落ちることを防ぐことが可能になっている。このような仮止め状態は、バッフル60に第1被係止部64や第2被係止部65を設けるだけで可能になり、バッフル60の形状および寸法の精度としては、バッフル挿入用開口56の形状に正確に沿うような程度までは要求されないため、製造コストを下げることができる。 Further, the vicinity of the outer peripheral surface opposite to the insertion direction of the
As described above, the header collecting
Here, even if there is an impact during transportation until the header collecting
(4-5)ヘッダ集合管本体の端部近傍部分の蓋部材としてのバッフルによる勘合閉鎖状態
図19に、ヘッダ集合管本体50の端部近傍が蓋部材としてのバッフル60で塞がれた状態を示す外観斜視図を示す。図20に、同状態の側面視断面図をそれぞれ示す。なお、図19、図20では、理解の容易のため、バッフル60にハッチングを施して、ヘッダ集合管本体50と区別して示している。
蓋部材としてのバッフル60は、凸部63が挿入方向先端になるようにして、ヘッダ集合管本体50の上端面51cと係止部70の下面71c、72cとの間を水平方向に挿入されることで、仮止め状態となる。 It should be noted that the
(4-5) Closed engagement state by baffle as lid member near end of header collecting pipe main body FIG. 19 shows a state where the vicinity of the end of header collecting pipe
The
以上のようにして、蓋部材としてのバッフル60が仮止め状態となったヘッダ集合管本体50は、炉の中に入れられることで炉中ロウ付けされる。なお、具体的には、仕切り板としてのバッフル60と、蓋部材としてのバッフル60と、のいずれについても仮止め状態とした後に、炉に入れられることになる。
なお、バッフル60についても、仮止め後の炉の中に移動させるまでの運搬時の衝撃等があっても、バッフル60が仮止め状態から抜け落ちることを防ぐことが可能になっている。このような仮止め状態は、バッフル60に第1被係止部64や第2被係止部65を設けるだけで可能になり、バッフル60の形状および寸法の精度としては、ヘッダ集合管本体50の上端面51cと係止部70の下面71c、72cとの間の形状に正確に沿うような程度までは要求されないため、製造コストを下げることができる。 Further, the vicinity of the outer peripheral surface opposite to the insertion direction of the
As described above, the header collecting
The
(5)空気調和装置1の室外熱交換器20の特徴
本実施形態の室外熱交換器20は、ヘッダ集合管本体50に蓋部材としてのバッフル60が取り付けられた状態で、バッフル60の上面の少なくとも一部に管端部分53が位置している。このため、バッフル60とヘッダ集合管本体50との接合部分は、従来例のようなバッフルの下面のみに限られず、上面側においても接合部分を有することができている。これにより、ヘッダ集合管本体50と蓋部材としてのバッフル60との接合強度を高めることができている。 Furthermore, since the latching | locking
(5) Features of the
特に、上記排水用溝52が採用された室外熱交換器20が、冷凍サイクルにおける冷媒の蒸発器として機能される場合には、結露水が生じやすいが、その場合であっても、生じた結露水を効率的に排水することが可能になっている。 In addition, the
In particular, when the
上記実施形態では、本発明の実施形態の一例を説明したが、上記実施形態はなんら本願発明を限定する趣旨ではなく、上記実施形態には限られない。本願発明は、その趣旨を逸脱しない範囲で適宜変更した態様についても当然に含まれる。
(6-1)変形例A
上記実施形態の室外熱交換器20のヘッダ集合管本体50では、係止部70が第1係止部71と第2係止部72との互いに分かれた部分をそれぞれ有している例を説明した。
しかし、本発明はこれに限られるものではなく、例えば、図21に示す係止部270が設けられたヘッダ集合管本体250のように、上記実施形態の第1係止部71と第2係止部72とが周方向に延長されて接続された形態であってもよい。そして、当該係止部270には、内周面51bと外周面51aとを接続するように径方向に貫通した排水口72xが設けられていてもよい。 (6) Modification In the above embodiment, an example of the embodiment of the present invention has been described. However, the above embodiment is not intended to limit the present invention, and is not limited to the above embodiment. The present invention naturally includes aspects appropriately modified without departing from the spirit of the present invention.
(6-1) Modification A
In the header collecting pipe
However, the present invention is not limited to this. For example, like the header collecting
これらの場合であっても、蓋部材としてのバッフル60の上方であって管端部分53の内側の空間における水の排水性を確保することが可能になる。
(6-2)変形例B
上記実施形態では、排水用溝52の下端部52aと、ヘッダ集合管本体50の管端部分53以外の部分の上端面51cと、がヘッダ集合管本体50の長手方向において同じ高さ位置である場合を例に挙げて説明した。
しかし、本発明は、これに限られるものではなく、例えば、図22に示すように、上記実施形態の凸部63に相当する形状を有さない蓋部材としてのバッフル360と、蓋部材としてのバッフル360の径方向外側端部の一部の上方において欠落させた排水用溝352を有する管端部分353を備えたヘッダ集合管本体350と、を用いて排水構造を構成してもよい。この場合であっても、排水性を十分に確保することができる。 Further, only the
Even in these cases, it is possible to ensure water drainage in the space above the
(6-2) Modification B
In the above embodiment, the
However, the present invention is not limited to this. For example, as shown in FIG. 22, a
2 空調室外機
3 空調室内機
10 ユニットケーシング
20 室外熱交換器(熱交換器)
21 熱交換部
21a 伝熱フィン(フィン)
21b 扁平多穴管(扁平管)
22,23 ヘッダ集合管
31 ガス冷媒配管
32 液冷媒配管
40 膨張弁
50 ヘッダ集合管本体
52 排水用溝(排水部、溝)
52a 下端部
53 管端部分
60 バッフル(蓋部材) 1 Air conditioning equipment (refrigeration equipment)
2 Air conditioning
21
21b Flat multi-hole tube (flat tube)
22, 23
52a
Claims (5)
- 複数の扁平管(21b)と、
各扁平管が接続されたヘッダ集合管(22、23)と、
上記扁平管に接合された複数のフィン(21a)と、を備え、
上記扁平管の内部を流れる流体が上記扁平管の外部を流れる空気と熱交換する熱交換器(20)であって、
前記ヘッダ集合管(22、23)は、
長手方向が上下方向となるように設けられたヘッダ集合管本体(50)と、
前記ヘッダ集合管本体(50)の上端よりも内側に設けられて、前記ヘッダ集合管本体(50)の上側を塞いでいる蓋部材(60)と、
を備え、
前記ヘッダ集合管本体(50)は、前記蓋部材(60)よりも上方に延びた管端部分(53)を有しており、
前記管端部分(53)の一部に排水部(52)が形成されている、
熱交換器(50)。 A plurality of flat tubes (21b);
A header collecting pipe (22, 23) to which each flat pipe is connected;
A plurality of fins (21a) joined to the flat tube,
A heat exchanger (20) in which a fluid flowing inside the flat tube exchanges heat with air flowing outside the flat tube,
The header collecting pipes (22, 23)
A header collecting pipe body (50) provided such that the longitudinal direction is the vertical direction;
A lid member (60) provided on the inner side of the upper end of the header collecting pipe body (50) and closing the upper side of the header collecting pipe body (50);
With
The header collecting pipe body (50) has a pipe end portion (53) extending upward from the lid member (60),
A drainage part (52) is formed in a part of the pipe end part (53).
Heat exchanger (50). - 前記排水部は、前記管端部分(53)の一部が下方に凹んで形成された溝(52)である、
請求項1に記載の熱交換器。 The drainage part is a groove (52) formed by recessing a part of the pipe end part (53) downward.
The heat exchanger according to claim 1. - 前記排水溝(52)の下端部(52a)は、前記蓋部材(60)の上端部よりも下方に位置している、
請求項2に記載の熱交換器。 The lower end (52a) of the drainage groove (52) is located below the upper end of the lid member (60).
The heat exchanger according to claim 2. - 前記蓋部材の外周部の少なくとも一部は、前記ヘッダ集合管のうち前記管端部分(53)以外の一部と前記管端部分との間で上下から狭持されている、
請求項1から3のいずれか1項に記載の熱交換器。 At least a part of the outer peripheral part of the lid member is sandwiched from above and below between a part of the header collecting pipe other than the pipe end part (53) and the pipe end part.
The heat exchanger according to any one of claims 1 to 3. - 圧縮機、第1熱交換器、膨張弁、および、請求項1から4のいずれか1項に記載の熱交換器である第2熱交換器が互いに接続されることで構成されており、前記第2熱交換器を少なくとも冷媒の蒸発器として機能させることが可能な冷媒回路を備えた、
冷凍装置(1)。 The compressor, the first heat exchanger, the expansion valve, and the second heat exchanger that is the heat exchanger according to any one of claims 1 to 4, are configured to be connected to each other, and A refrigerant circuit capable of causing the second heat exchanger to function as at least a refrigerant evaporator;
Refrigeration equipment (1).
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
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EP12861123.3A EP2799804B1 (en) | 2011-12-28 | 2012-12-26 | Heat exchanger and refrigeration device |
ES12861123.3T ES2574508T3 (en) | 2011-12-28 | 2012-12-26 | Heat exchanger and cooling device |
US14/368,174 US20150027161A1 (en) | 2011-12-28 | 2012-12-26 | Heat exchanger and refrigeration device |
CN201280065381.0A CN104024782B (en) | 2011-12-28 | 2012-12-26 | Heat exchanger and refrigerating plant |
BR112014016164-0A BR112014016164B1 (en) | 2011-12-28 | 2012-12-26 | heat exchanger and cooling device |
AU2012361654A AU2012361654B2 (en) | 2011-12-28 | 2012-12-26 | Heat exchanger and refrigeration device |
KR1020147021017A KR101449911B1 (en) | 2011-12-28 | 2012-12-26 | Heat exchanger and refrigeration device |
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JP2011-290120 | 2011-12-28 | ||
JP2011290120A JP5445576B2 (en) | 2011-12-28 | 2011-12-28 | Heat exchanger and refrigeration equipment |
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US (1) | US20150027161A1 (en) |
EP (1) | EP2799804B1 (en) |
JP (1) | JP5445576B2 (en) |
KR (1) | KR101449911B1 (en) |
CN (1) | CN104024782B (en) |
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JP6050978B2 (en) * | 2012-07-23 | 2016-12-21 | 株式会社ケーヒン・サーマル・テクノロジー | Evaporator |
JP6035089B2 (en) * | 2012-09-12 | 2016-11-30 | 株式会社ケーヒン・サーマル・テクノロジー | Heat exchanger |
JP2015227737A (en) * | 2014-05-30 | 2015-12-17 | 株式会社日本クライメイトシステムズ | Heat exchanger header |
JP5987889B2 (en) * | 2014-11-14 | 2016-09-07 | ダイキン工業株式会社 | Heat exchanger |
GB2537105A (en) * | 2015-03-30 | 2016-10-12 | Mcgowan Gregory | Air conditioning system |
WO2017179219A1 (en) * | 2016-04-12 | 2017-10-19 | 株式会社 Trigence Semiconductor | Speaker drive device, speaker device, and program |
US11193701B2 (en) * | 2017-06-09 | 2021-12-07 | Mitsubishi Electric Corporation | Heat exchanger and refrigeration cycle apparatus |
EP3686535B1 (en) | 2019-01-22 | 2024-03-06 | Hitachi Energy Ltd | Condenser |
JP7447644B2 (en) | 2020-04-03 | 2024-03-12 | 株式会社デンソー | Expansion valve mounting structure |
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BR112014016164B1 (en) | 2020-07-28 |
AU2012361654B2 (en) | 2014-10-02 |
ES2574508T3 (en) | 2016-06-20 |
CN104024782B (en) | 2015-09-09 |
KR101449911B1 (en) | 2014-10-15 |
KR20140100587A (en) | 2014-08-14 |
US20150027161A1 (en) | 2015-01-29 |
BR112014016164A2 (en) | 2017-06-13 |
JP5445576B2 (en) | 2014-03-19 |
EP2799804B1 (en) | 2016-03-09 |
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JP2013139941A (en) | 2013-07-18 |
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EP2799804A4 (en) | 2014-12-17 |
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