WO2018116929A1 - Échangeur de chaleur et climatiseur - Google Patents

Échangeur de chaleur et climatiseur Download PDF

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Publication number
WO2018116929A1
WO2018116929A1 PCT/JP2017/044694 JP2017044694W WO2018116929A1 WO 2018116929 A1 WO2018116929 A1 WO 2018116929A1 JP 2017044694 W JP2017044694 W JP 2017044694W WO 2018116929 A1 WO2018116929 A1 WO 2018116929A1
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WIPO (PCT)
Prior art keywords
chamber
heat transfer
heat exchanger
refrigerant
header
Prior art date
Application number
PCT/JP2017/044694
Other languages
English (en)
Japanese (ja)
Inventor
秀哲 立野井
青木　泰高
洋平 葛山
将之 左海
Original Assignee
三菱重工サーマルシステムズ株式会社
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 三菱重工サーマルシステムズ株式会社 filed Critical 三菱重工サーマルシステムズ株式会社
Priority to EP17883828.0A priority Critical patent/EP3473963A4/fr
Publication of WO2018116929A1 publication Critical patent/WO2018116929A1/fr

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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
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0243—Header boxes having a circular cross-section

Definitions

  • the present invention relates to a heat exchanger and an air conditioner. This application claims priority based on Japanese Patent Application No. 2016-247153 for which it applied on December 20, 2016, and uses the content here.
  • a heat exchanger for an air conditioner in which a plurality of heat transfer tubes extending in the horizontal direction are arranged at intervals in the vertical direction and fins are provided on the outer surface of each heat transfer tube. Both ends of the plurality of heat transfer tubes are respectively connected to a pair of headers extending in the vertical direction.
  • the refrigerant introduced into one header and circulated through the heat transfer tube to the other header is folded back at the other header and returned to the one header again through the heat transfer tube.
  • a plurality of regions are defined by partition plates that divide the header in the vertical direction.
  • the refrigerant introduced into the one area in the header via the heat transfer tube is introduced into the other area in the header via the connection pipe, and then the plurality of heat transfer pipes connected to the other area. Is returned to one header on the entrance / exit side.
  • liquid phase refrigerant having a large specific gravity tends to flow downward
  • gas phase refrigerant having a small specific gravity tends to flow upward. Therefore, a drift occurs in the refrigerant flowing into each heat transfer tube.
  • Patent Document 1 describes that the header is divided into a heat transfer tube side space and a counter heat transfer tube side space by a partition plate, and these spaces are communicated with each other at an upper part and a lower part to suppress refrigerant drift. ing.
  • the refrigerant flow rate flowing into the heat transfer tube is equalized in any heat transfer tube from the upper part to the lower part.
  • This invention is made
  • the heat exchanger according to the first aspect of the present invention includes a plurality of heat exchanger tubes that extend in the horizontal direction and in which a refrigerant flows therethrough and that are arranged in a plurality at intervals in the vertical direction, and that have a tubular shape that extends in the vertical direction.
  • the heat transfer tube has one end connected to an internal space in a communicating state, and the header portion extends in a horizontal sectional view across each heat transfer tube and the inner peripheral surface of the header portion to pass through the header portion.
  • Each of the heat transfer tubes is partitioned into a first chamber and a second chamber, and the first chamber and the second chamber are separated from each other at a position equal to or higher than the height of the uppermost heat transfer tube among the heat transfer tubes.
  • a vertical partition plate that forms a first communicating portion that communicates, and a flow passage that is connected only to the first chamber among the first chamber and the second chamber, and through which the refrigerant flows.
  • the refrigerant when the heat exchanger is used as an evaporator, the refrigerant is introduced into the first chamber in the header portion through the flow path. A part of the refrigerant introduced into the first chamber is introduced into each heat transfer tube.
  • the refrigerant that has not been introduced into the heat transfer tubes is introduced into the second chamber via the first communication portion formed in the upper part of the vertical partition plate, and is introduced into each heat transfer tube while moving downward in the second chamber. It will be.
  • the flow rate of the refrigerant moving in the first chamber can be suppressed, and the amount of refrigerant introduced into each heat transfer tube connected to the upper part or the central part in the header part is secured.
  • the refrigerant may concentrate on the upper part of the first chamber, but the refrigerant is introduced into the upper part of the second chamber through the first series part formed at the upper part of the vertical partition plate. Since the refrigerant is introduced into each heat transfer tube while moving downward in the second chamber, the refrigerant is introduced into each heat transfer tube connected to the lower part and the central part in the header part without concentrating on the upper part of the header part. As a result, the amount of refrigerant to be ensured is ensured, so that the variation in the flow rate of the refrigerant flowing through each heat transfer tube can be suppressed.
  • the first series passage may be a communication hole formed in the vertical partition plate.
  • the first series part may be a gap between the vertical partition plate and an upper end of the header part.
  • the vertical partition plate may form a second communication portion that allows the first chamber and the second chamber to communicate with each other between the vertically adjacent heat transfer tubes.
  • the refrigerant is introduced from each heat transfer tube into the first chamber and the second chamber in the header portion, and the refrigerant introduced into the first chamber is introduced into the flow passage.
  • the refrigerant introduced into the second chamber is introduced into the first chamber via the second communication portion formed in the vertical partition plate and then introduced into the flow passage.
  • the vertical partition plate forms a third communication portion that communicates the first chamber and the second chamber with each other at a position below the lowest heat transfer tube among the heat transfer tubes. It may be.
  • the refrigerant is introduced from each heat transfer tube into the first chamber and the second chamber in the header portion, and the refrigerant introduced into the first chamber is introduced into the flow passage.
  • the refrigerant introduced into the second chamber moves downward in the second chamber, is introduced into the first chamber via the third communication portion formed in the vertical partition plate, and is then introduced into the flow passage.
  • the refrigerant introduced into the second chamber from each heat transfer tube can be introduced into the first chamber via the second communication portion without being accumulated in the second chamber and introduced into the flow passage.
  • a lower portion of the vertical partition plate is curved from the second chamber side to the first chamber side, and the third communication portion is between the vertical partition plate and a lower end of the header portion. It may be a gap.
  • the refrigerant is introduced from each heat transfer tube into the first chamber and the second chamber in the header portion, and the refrigerant introduced into the first chamber is introduced into the flow passage.
  • the refrigerant introduced into the second chamber moves downward in the second chamber, is introduced into the first chamber via the third communication portion formed in the vertical partition plate, and is then introduced into the flow passage.
  • the refrigerant introduced into the second chamber from each heat transfer tube can be introduced into the first chamber via the second communication portion without being accumulated in the second chamber and introduced into the flow passage.
  • the lower part of the vertical partition plate is curved toward the second chamber, the curved shape guides the flow of the refrigerant, and the refrigerant is easily introduced from the second chamber into the first chamber.
  • the length Lp of the heat transfer tube in the header portion in the extending direction of the heat transfer tube may be less than or equal to half of the inner diameter Di of the header portion.
  • the length in the header portion of the heat transfer tube is short, so that the gas-liquid two-phase state introduced from the flow passage to the first chamber and the first chamber to the second chamber is Disturbances in the flow of the refrigerant due to the refrigerant collecting between the upper and lower portions of the heat transfer tubes in the first chamber and the second chamber can be suppressed, and the liquid-phase refrigerant is easily introduced into the heat transfer tubes. This further suppresses the occurrence of variations in the flow rate of the refrigerant flowing through each heat transfer tube.
  • the air conditioner according to the second aspect of the present invention includes any one of the above heat exchangers. As a result, it is possible to suppress the occurrence of variations in the flow rate of the refrigerant flowing through each heat transfer tube, and to avoid a decrease in cooling and heating performance.
  • FIG. 1 is an overall configuration diagram of an air conditioner according to a first embodiment of the present invention. It is a longitudinal cross-sectional view of the heat exchanger which concerns on 1st embodiment of this invention. It is a perspective view of the heat exchanger which concerns on 1st embodiment of this invention. It is a horizontal sectional view of the 2nd header part of the heat exchanger concerning a first embodiment of the present invention. It is an A direction arrow directional view of FIG. It is a perspective view of the heat exchanger which concerns on the modification of 1st embodiment of this invention. It is a horizontal sectional view of the 2nd header part of the heat exchanger concerning the modification of a first embodiment of the present invention. It is a B direction arrow directional view of FIG.
  • E arrow line view of FIG. It is a perspective view of the heat exchanger which concerns on the modification of 3rd embodiment of this invention. It is a longitudinal direction sectional view of the 2nd header part of the heat exchanger concerning the modification of a third embodiment of the present invention. It is a F arrow line view of FIG. It is a horizontal sectional view of the 2nd header part of the heat exchanger of the heat exchanger concerning a fourth embodiment of the present invention.
  • the air conditioner 1 includes a compressor 2, an indoor heat exchanger 3 (heat exchanger 10), an expansion valve 4, an outdoor heat exchanger 5 (heat exchanger 10), a four-way valve 6, and The pipe 7 for connecting them is provided, and a refrigerant circuit composed of these is constituted.
  • the compressor 2 compresses the refrigerant and supplies the compressed refrigerant to the refrigerant circuit.
  • the indoor heat exchanger 3 performs heat exchange between the refrigerant and the indoor air.
  • the indoor heat exchanger 3 is used as an evaporator during cooling operation and absorbs heat from the room, and is used as a condenser during heating operation and dissipates heat to the room.
  • the outdoor heat exchanger 5 performs heat exchange between the refrigerant and the outdoor air.
  • the expansion valve 4 reduces the pressure by expanding the high-pressure refrigerant liquefied by exchanging heat with the condenser.
  • the outdoor heat exchanger 5 is used as a condenser during the cooling operation and dissipates heat to the outside, and is used as an evaporator during the heating operation and absorbs heat from the outside.
  • the four-way valve 6 switches the direction in which the refrigerant flows between the heating operation and the cooling operation. Accordingly, during the cooling operation, the refrigerant circulates in the order of the compressor 2, the outdoor heat exchanger 5, the expansion valve 4, and the indoor heat exchanger 3. On the other hand, during the heating operation, the refrigerant circulates in the order of the compressor 2, the indoor heat exchanger 3, the expansion valve 4, and the outdoor heat exchanger 5.
  • the heat exchanger 10 used as the indoor heat exchanger 3 and the outdoor heat exchanger 5 will be described with reference to FIGS.
  • the heat exchanger 10 includes a plurality of heat transfer tubes 20, a plurality of fins 23, a pair of headers 30, and a connection tube 55.
  • the heat transfer tube 20 is a tubular member extending linearly in the horizontal direction, and a flow path through which the refrigerant flows is formed.
  • a plurality of such heat transfer tubes 20 are arranged at intervals in the vertical direction, and are arranged in parallel to each other.
  • each heat transfer tube 20 has a flat tubular shape, and a plurality of flow paths arranged in parallel in the horizontal direction perpendicular to the extending direction of the heat transfer tube 20 are formed inside the heat transfer tube 20. ing.
  • the plurality of flow paths are arranged in parallel to each other.
  • the outer shape of the cross section orthogonal to the extending direction of the heat transfer tube 20 is a flat shape with the horizontal direction orthogonal to the extending direction of the heat transfer tube 20 as the longitudinal direction.
  • the fins 23 are respectively disposed between the heat transfer tubes 20 arranged as described above.
  • the fins 23 are alternately arranged in the heat transfer tubes 20 adjacent to each other in the vertical direction as they extend in the extending direction of the heat transfer tubes 20. It extends in a so-called corrugated shape extending so as to come into contact.
  • the shape of the fin 23 is not limited to this, and may be any shape as long as it is provided so as to protrude from the outer peripheral surface of the heat transfer tube 20.
  • the pair of headers 30 are provided so as to sandwich the heat transfer tubes 20 at both ends of the plurality of heat transfer tubes 20.
  • One of the pair of headers 30 is an inlet / outlet header 40 serving as an inlet / outlet of the refrigerant into the heat exchanger 10 from the outside.
  • the other of the pair of headers 30 is a folded-back header 50 for the refrigerant to be folded in the heat exchanger 10.
  • the entrance / exit header 40 is a cylindrical member extending in the up-down direction, the upper end and the lower end are closed, and the inside is partitioned into two upper and lower regions by a partition plate.
  • a lower area defined by the entry / exit partition plate 41 is a lower entry / exit area 42.
  • An upper area partitioned by the entrance / exit partition plate 41 is an upper entrance / exit area 43.
  • the lower entrance / exit area 42 and the upper entrance / exit area 43 are not in communication with each other in the entrance / exit header 40.
  • the lower entry / exit area 42 and the upper entry / exit area 43 are connected to the pipes 7 constituting the refrigerant circuit.
  • the heat transfer tube 20 connected in communication with the lower entrance / exit region 42 is the first heat transfer tube 21.
  • the heat transfer tube 20 connected in communication with the upper entrance / exit region 43 is a second heat transfer tube 22 (heat transfer tube 20).
  • the folded-back header 50 includes a header body 51, a folded-side partition plate 54, and a vertical partition plate 70.
  • the header main body 51 is a cylindrical member extending in the vertical direction, and the upper end and the lower end are closed.
  • the folding side partition plate 54 is provided in the header body 51, and divides the space in the header body 51 into two upper and lower areas.
  • a lower portion of the folding side partition plate 54 of the header body 51 is a first header portion 52.
  • the upper part of the folding side partition plate 54 of the header body 51 is a second header part 53 (header part).
  • the header main body 51 is partitioned by the folding side partition plate 54, so that the first header portion 52 and the second header portion 53 each having a space therein are formed in the folding side header 50. ing.
  • the first header portion 52 and the second header portion 53 constitute the folded-back header 50.
  • the first heat transfer tube 21 is connected to the first header portion 52 from one side in the horizontal direction so as to communicate with the inside of the first header portion 52.
  • the second heat transfer tubes 22 are connected to the second header portion 53 from one side in the horizontal direction so as to communicate with the inside of the second header portion 53, respectively.
  • the heat transfer tube 20 connected to the first header portion 52 is the first heat transfer tube 21
  • the heat transfer tube 20 connected to the second header portion 53 is the second heat transfer tube 22.
  • the vertical partition plate 70 is a plate-like member extending in the vertical direction, and is provided in the second header portion 53.
  • the vertical partition plate 70 divides the space in the second header portion 53 into two regions of a first chamber 76 and a second chamber 77 so that each space communicates with each second heat transfer tube 22 in a horizontal sectional view. ing.
  • the vertical partition plate 70 is installed in a direction in which the second heat transfer tube 22 extends in a horizontal sectional view.
  • the vertical partition plate 70 extends in the horizontal direction in the second header portion 53.
  • each second heat transfer tube in which the first chamber 76 and the second chamber 77 are separated by the vertical partition plate 70 also between the second heat transfer tubes 22 adjacent in the vertical direction is the second header portion.
  • the one end by the side of the 2nd heat exchanger tube among the both ends of the horizontal direction of the vertical partition plate 70 is contacting the 2nd heat exchanger tube.
  • the opening of each second heat transfer tube 22 is divided in the horizontal direction perpendicular to the extending direction of the second heat transfer tube 22 by one end of the vertical partition plate.
  • the connecting pipe 55 is a tubular member having a flow path formed therein, and one end of the connecting pipe 55 is connected to the first header portion 52 in communication with the inside of the first header portion 52, and the other end. Is connected to the second header portion 53 in communication with the inside of the second header portion 53. More specifically, one end of the connection pipe 55 is connected to the central portion of the first header portion 52 in the vertical direction. On the other hand, the other end of the connection pipe 55 is connected to the lower part of the first chamber 76 of the second header part 53.
  • a flow path formed inside the connection pipe 55 serves as a flow passage 56 that allows the refrigerant to flow between the first header portion 52 and the second header portion 53.
  • the flow passage 56 may be formed so as to directly connect the inside of the first header portion 52 and the first chamber 76 to the folded-back partition plate 54.
  • the header 30 has a cylindrical shape extending in the vertical direction, and the internal space is also cylindrical.
  • the vertical partition plate 70 is arrange
  • the first chamber 76 and the second chamber 77 each have a semicircular shape in a horizontal sectional view.
  • an upper communication hole 62 (first communication portion 61) that allows the first chamber 76 and the second chamber 77 to communicate with each other by penetrating the vertical partition plate 70 is formed.
  • the upper communication hole 62 is equal to or higher than the height of the second header portion uppermost heat transfer tube 24, which is the heat transfer tube located at the uppermost position among the second heat transfer tubes 22. Formed in position.
  • the upper communication hole 62 is formed at a position ahead of the tip of the second heat transfer tube 22, that is, on the side opposite to the connection portion between the second header portion 53 and the second heat transfer tube 22 in the horizontal sectional view. .
  • the heat exchanger 10 When the heat exchanger 10 is the indoor heat exchanger 3, it is used as an evaporator during the cooling operation of the air conditioner 1, and when the outdoor heat exchanger 5 is used, it evaporates during the heating operation of the air conditioner 1. It will be used as a container.
  • a gas-liquid two-phase refrigerant with a large liquid phase is supplied from the pipe 7 to the lower inlet / outlet region 42 of the inlet / outlet header 40 shown in FIG.
  • This refrigerant is distributed and supplied into the plurality of first heat transfer tubes 21 in the lower entrance / exit region 42, and exchanges heat with the external atmosphere of the first heat transfer tubes 21 in the process of flowing through the first heat transfer tubes 21. Evaporation is encouraged.
  • the refrigerant supplied from the first heat transfer tube 21 into the first header portion 52 of the folded-back header 50 is a gas-liquid two-phase in which the liquid phase ratio is reduced due to a partial change from the liquid phase to the gas phase. Becomes a refrigerant.
  • the gas-liquid two-phase refrigerant supplied into the first header portion 52 is introduced into a connecting pipe 55 connected to the first header portion 52, and It is introduced into the first chamber 76 in the second header portion 53 through the connecting pipe 55.
  • the refrigerant introduced into the first chamber 76 sequentially moves upward in the first chamber 76 as the refrigerant continues to be supplied, and is introduced into each second heat transfer tube 22.
  • the refrigerant that has not been introduced into the second heat transfer tube 22 is introduced into the upper portion of the second chamber 77 through the upper communication hole 62 formed in the upper portion of the vertical partition plate 70.
  • the refrigerant introduced into the upper portion of the second chamber 77 is introduced into each second heat transfer tube 22 while moving downward in the second chamber 77.
  • the cross-sectional area of the refrigerant flow path in the first chamber 76 is the entire second header portion 53. It is smaller than the cross-sectional area. For this reason, even if it is a case where there is little refrigerant
  • the amount of refrigerant introduced into the heat transfer tubes 22 is ensured, and the occurrence of variations in the flow rate of the refrigerant flowing through each second heat transfer tube 22 can be suppressed.
  • the refrigerant may concentrate on the upper portion of the first chamber 76, but the upper portion of the second chamber 77 is formed via the upper communication hole 62 formed on the upper portion of the vertical partition plate 70. Since the refrigerant is introduced and introduced into each of the second heat transfer tubes 22 while moving downward in the second chamber 77, the refrigerant does not concentrate on the upper portion of the second header portion 53, and the second header portion.
  • the amount of refrigerant introduced into each second heat transfer tube 22 connected to the lower part or the center part in 53 is secured, and also the occurrence of variation in the flow rate of refrigerant flowing through each second heat transfer tube 22 is suppressed. it can.
  • the refrigerant is urged to evaporate again by exchanging heat with the external atmosphere of the second heat transfer tube 22 in the course of flowing through the second heat transfer tube 22.
  • the liquid phase remaining in the refrigerant changes into a gas phase in the second heat transfer tube 22, and the gas phase refrigerant is supplied to the upper entrance / exit region 43 of the inlet / outlet header 40.
  • the refrigerant is introduced into the pipe 7 from the upper entrance / exit area 43 and circulates in the refrigerant circuit.
  • the refrigerant supplied to the second header portion 53 can be used for each second heat transfer tube 22 regardless of whether the refrigerant flow rate is small or large.
  • the variation in the amount of refrigerant introduced into the heat exchanger can be suppressed, and the performance deterioration of the heat exchanger due to the deviation of the refrigerant flow rate flowing into the heat transfer tube can be suppressed.
  • the cooling performance and the heating performance are not impaired.
  • the height may be the same height as the two header portion uppermost heat transfer tubes 24 or the height between the second header portion uppermost heat transfer tube 24 and the upper end of the second header portion 53.
  • a gap is formed between the vertical partition plate 70 and the second header portion 53, and the gap communicates the first chamber 76 and the second chamber 77 with the upper communication portion 63 (first communication portion 61).
  • the refrigerant introduced into the first chamber 76 sequentially moves upward in the first chamber 76 as the refrigerant continues to be supplied, and is introduced into each second heat transfer tube 22.
  • the refrigerant that has not been introduced into the second heat transfer tube 22 is introduced into the upper portion of the second chamber 77 via the upper communication portion 63 formed at the upper portion of the vertical partition plate 70, and moves downward in the second chamber. Since it will be introduced into each second heat transfer tube 22, the occurrence of variations in the amount of refrigerant introduced into each second heat transfer tube 22 can be suppressed as described above.
  • the heat exchanger 80 which concerns on 2nd embodiment of this invention is demonstrated with reference to FIG.9, FIG10 and FIG.11.
  • the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.
  • the vertical partition plate 71 of the heat exchanger 80 of the second embodiment is similar to the first embodiment in the internal space of the cylindrical second header portion 53. It arrange
  • the vertical partition plate 71 is formed with an upper communication hole 62 similar to that of the first embodiment.
  • the length of the vertical partition plate 71 in the horizontal direction is from the tip position of the heat transfer tube 22 to the inner peripheral surface of the second header portion 53.
  • the upper and lower portions of each heat transfer tube 22 in the second header portion 53 are not provided with the vertical partition plate 71, and thereby the heat transfer tube side communication portion 65 (second communication portion) for communicating the first chamber 76 and the second chamber 77. 64) is formed.
  • the heat exchanger 80 operates as a condenser during the cooling operation of the air conditioner 1, contrary to the case where the heat exchanger 80 is used as an evaporator, the first chamber 76 in the second header portion 53 from each second heat transfer tube 22 and A refrigerant is introduced into the second chamber 77.
  • the refrigerant introduced into the first chamber 76 moves downward in the first chamber 76 and is introduced into the first header portion 52 via the connection pipe 55.
  • the refrigerant introduced into the second chamber 77 is introduced into the first chamber 76 via the heat transfer tube side communication portion 65 formed in the vertical partition plate 71 and then into the first header portion 52 via the connection tube 55. be introduced.
  • the heat exchanger 80 of the present embodiment when operating as an evaporator, it is the same as in the first embodiment, but when operating as a condenser, the second heat transfer tube 22
  • the refrigerant introduced into the second chamber 77 does not accumulate in the second chamber 77 and is introduced into the first chamber 76 via the heat transfer tube side communication portion 65 formed in the vertical partition plate 71. It can introduce
  • the cooling performance and the heating performance are not impaired.
  • the length of the vertical partition plate 71 in the horizontal direction is the same as that of the first embodiment.
  • the heat transfer tube side communication holes 66 may be formed in portions corresponding to the upper and lower portions of the second heat transfer tubes 22 in 71 so that the first chamber 76 and the second chamber 77 communicate with each other.
  • the refrigerant introduced from each second heat transfer tube 22 into the second chamber 77 does not accumulate in the second chamber 77, and passes through the heat transfer tube side communication hole 66 formed in the vertical partition plate 71. It is introduced into the first chamber 76 and can be introduced into the first header portion via the connecting pipe 55 connected to the lower portion of the first chamber 76.
  • the cooling performance and the heating performance are not impaired.
  • the heat exchanger 90 which concerns on 3rd embodiment of this invention is demonstrated with reference to FIG.15, FIG16 and FIG.17.
  • the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.
  • the vertical partition plate 72 of the heat exchanger 90 of the third embodiment is similar to the first embodiment in the internal space of the cylindrical second header portion 53.
  • an upper communication hole 62 similar to the first embodiment is formed.
  • the vertical partition plate 72 further includes the first chamber 76 and the first chamber 76 at a position lower than the second header portion lowermost heat transfer tube 25, which is a heat transfer tube located at the lowermost portion in each second heat transfer tube 22.
  • a lower communication hole 68 (third communication portion 67) for communicating with the two chambers 77 is formed. Further, the lower communication hole 68 is formed at a position ahead of the tip of the second heat transfer tube 22, that is, on the side opposite to the connection portion between the second header portion 53 and the second heat transfer tube 22 in a horizontal sectional view. Is done.
  • the heat exchanger 90 operates as a condenser during the cooling operation of the air conditioner 1, contrary to the case where it is used as an evaporator, the first chamber 76 in the second header section 53 from each second heat transfer tube 22 and A refrigerant is introduced into the second chamber 77.
  • the refrigerant introduced into the first chamber 76 moves downward in the first chamber 76 and is introduced into the first header portion 52 via the connection pipe 55.
  • the refrigerant introduced into the second chamber 77 moves downward in the second chamber 77, and then introduced into the first chamber 76 via the lower communication hole 68 formed in the vertical partition plate 72. It is introduced into the first header portion 52 through the connecting pipe 55.
  • the heat exchanger 90 of the present embodiment when operating as an evaporator, it is the same as in the first embodiment, but when operating as a condenser, the second heat transfer tube 22
  • the refrigerant introduced into the second chamber 77 does not accumulate in the second chamber 77 and is introduced into the first chamber 76 through the lower communication hole 68 formed in the vertical partition plate 72, and is placed in the lower portion of the first chamber 76. It can introduce into a 1st header part via the connected connecting pipe 55.
  • FIG. As a result, in the air conditioner using the heat exchanger 90 of the present embodiment, the cooling performance and the heating performance are not impaired.
  • the lower part of the vertical partition plate 72 is curved toward the first chamber 76, and the second header part lowermost heat transfer tube 25.
  • a lower communication portion 69 (third communication portion 67) that allows the first chamber 76 and the second chamber 77 to communicate with each other may be formed further downward.
  • the lower communication portion 69 is formed as a gap between the lower end of the vertical partition plate 72 and the lower end of the second header portion 53. Also by this, the refrigerant introduced from each second heat transfer tube 22 into the second chamber 77 does not accumulate in the second chamber 77, and the first through the lower communication portion 69 formed in the vertical partition plate 72.
  • the second communication part 64 described in the second embodiment may be provided.
  • the vertical partition plate has the same configuration as that of any one of the first to third embodiments.
  • This embodiment demonstrates as a structure similar to the vertical partition plate 70 of 1st embodiment. Constituent elements similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and detailed description thereof is omitted.
  • the length Lp in the second header portion 53 of the second heat transfer tube 22 in the extending direction of the second heat transfer tube 22 is the second header portion.
  • the inner diameter Di of 53 is less than half.
  • the tip position of the second heat transfer tube 22 is the same as the center position of the second header portion 53 or is closer to the connection portion side of the second header portion 53 and the second heat transfer tube 22 than the center of the second header portion 53. ing.
  • a heat exchanger 100 when operating as an evaporator, since the length in the second header portion 53 of the second heat transfer tube 22 is short, the first chamber 76 and the first chamber 76 are connected from the connection tube 55.
  • the refrigerant in the gas-liquid two-phase state introduced into the second chamber 77 through the upper communication hole 62 from the upper part of the first chamber 76 and the second heat transfer tubes 22 in the second chamber 77 is accumulated.
  • the liquid phase refrigerant can be easily introduced into each second heat transfer tube.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un échangeur de chaleur pourvu : d'une pluralité de tuyaux de transfert de chaleur qui s'étendent horizontalement, permettent à un fluide frigorigène de s'écouler à travers ceux-ci et sont disposés à une certaine distance les uns des autres dans la direction verticale ; d'une section de collecteur qui est en forme de tuyau, s'étend dans la direction verticale et a un espace interne auquel une extrémité de chaque tuyau de la pluralité de tuyaux de transfert de chaleur est reliée d'une manière communicante ; d'une plaque de séparation verticale qui, dans une section transversale horizontale, s'étend à l'intérieur de la section de collecteur entre la surface périphérique interne de la section de collecteur et les tuyaux de transfert de chaleur, divise l'intérieur de la section de collecteur en une première chambre et une seconde chambre, les première et seconde chambres étant en communication avec chacun des tuyaux de transfert de chaleur et a, formée à l'intérieur de celle-ci, une première section de communication pour fournir une communication entre la première chambre et la seconde chambre à une position supérieure ou égale à la hauteur du tuyau de transfert de chaleur le plus haut des tuyaux de transfert de chaleur ; et d'un trajet d'écoulement qui est relié uniquement à la première chambre de la première chambre et de la seconde chambre et à travers lequel s'écoule un fluide frigorigène.
PCT/JP2017/044694 2016-12-20 2017-12-13 Échangeur de chaleur et climatiseur WO2018116929A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17883828.0A EP3473963A4 (fr) 2016-12-20 2017-12-13 Échangeur de chaleur et climatiseur

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016247153A JP2018100800A (ja) 2016-12-20 2016-12-20 熱交換器及び空気調和機
JP2016-247153 2016-12-20

Publications (1)

Publication Number Publication Date
WO2018116929A1 true WO2018116929A1 (fr) 2018-06-28

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EP (1) EP3473963A4 (fr)
JP (1) JP2018100800A (fr)
WO (1) WO2018116929A1 (fr)

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JP6664558B1 (ja) * 2019-02-04 2020-03-13 三菱電機株式会社 熱交換器、熱交換器を備えた空気調和装置、および熱交換器を備えた冷媒回路
WO2021149223A1 (fr) * 2020-01-23 2021-07-29 三菱電機株式会社 Échangeur de chaleur et appareil à cycle frigorifique
WO2021192192A1 (fr) * 2020-03-27 2021-09-30 三菱電機株式会社 Échangeur de chaleur, unité d'échangeur de chaleur et dispositif à cycle frigorifique
US20230094694A1 (en) * 2020-03-23 2023-03-30 Fujitsu General Limited Heat exchanger

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US20230082035A1 (en) * 2020-02-19 2023-03-16 Hanon Systems Heat exchanger having flow distribution tank structure for thermal stress dispersion
JP6927352B1 (ja) 2020-03-23 2021-08-25 株式会社富士通ゼネラル 熱交換器
JP7036166B2 (ja) * 2020-08-03 2022-03-15 株式会社富士通ゼネラル 熱交換器

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JP6664558B1 (ja) * 2019-02-04 2020-03-13 三菱電機株式会社 熱交換器、熱交換器を備えた空気調和装置、および熱交換器を備えた冷媒回路
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WO2021149223A1 (fr) * 2020-01-23 2021-07-29 三菱電機株式会社 Échangeur de chaleur et appareil à cycle frigorifique
US20230094694A1 (en) * 2020-03-23 2023-03-30 Fujitsu General Limited Heat exchanger
WO2021192192A1 (fr) * 2020-03-27 2021-09-30 三菱電機株式会社 Échangeur de chaleur, unité d'échangeur de chaleur et dispositif à cycle frigorifique

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EP3473963A4 (fr) 2019-07-03
JP2018100800A (ja) 2018-06-28
EP3473963A1 (fr) 2019-04-24

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