WO2025182019A1 - Collecteur d'échangeur de chaleur, échangeur de chaleur et dispositif à cycle de réfrigération - Google Patents

Collecteur d'échangeur de chaleur, échangeur de chaleur et dispositif à cycle de réfrigération

Info

Publication number
WO2025182019A1
WO2025182019A1 PCT/JP2024/007578 JP2024007578W WO2025182019A1 WO 2025182019 A1 WO2025182019 A1 WO 2025182019A1 JP 2024007578 W JP2024007578 W JP 2024007578W WO 2025182019 A1 WO2025182019 A1 WO 2025182019A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
hole
space
exchanger header
insertion hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/007578
Other languages
English (en)
Japanese (ja)
Inventor
篤史 ▲高▼橋
悟 梁池
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to PCT/JP2024/007578 priority Critical patent/WO2025182019A1/fr
Publication of WO2025182019A1 publication Critical patent/WO2025182019A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • 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
    • 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling

Definitions

  • This disclosure relates to a heat exchanger header, a heat exchanger, and a refrigeration cycle device.
  • Patent Document 1 describes a header tank in a heat exchanger that is joined to multiple heat transfer tubes with brazing material, in which a stopper portion is provided in the tube insertion hole to position the end of the heat transfer tube in the extension direction within the tube insertion hole.
  • the width of the stopper portion when viewed from the arrangement direction of the multiple heat transfer tubes is configured to be smaller than the width of the tube insertion hole on the opposite side of the tank outer shell member and the width of the end of the tube in the extension direction.
  • brazing material or other joining material that flows into the stopper portion from the insertion hole will reach the end of the heat transfer tube and block at least a portion of the flow path of the heat transfer tube that opens at that end.
  • the heat exchanger header comprises a main body having a first surface.
  • the main body is provided with an insertion hole that opens into the first surface and into which an end of a heat transfer tube is inserted, a stopper that abuts at least a portion of the end of the heat transfer tube inserted into the insertion hole, a first space that is positioned on the opposite side of the insertion hole from the stopper in a first direction that intersects the first surface and communicates with the insertion hole, and a second space that is positioned between the first surface and the stopper in the first direction and communicates with the insertion hole.
  • the second space When viewed from the first direction, the second space is positioned outward of the insertion hole and the stopper in a second direction along the first surface.
  • This disclosure provides a heat exchanger header that can prevent the bonding material from blocking the flow path of the heat transfer tube, a heat exchanger equipped with such a heat exchanger header, and a refrigeration cycle device equipped with such a heat exchanger.
  • FIG. 1 is a diagram illustrating an example of a refrigeration cycle device according to the present disclosure.
  • FIG. 1 illustrates an example of a heat exchanger according to the present disclosure.
  • 3 is a cross-sectional view illustrating a heat exchanger header according to the first embodiment.
  • FIG. FIG. 4 is a cross-sectional view taken along the arrow IV-IV in FIG. 3.
  • FIG. 10 is a cross-sectional view illustrating a heat exchanger header according to a comparative example. 10 is a cross-sectional view illustrating a modified example of the heat exchanger header according to the first embodiment.
  • FIG. FIG. 10 is a cross-sectional view illustrating a heat exchanger header according to a second embodiment.
  • FIG. 10 is a cross-sectional view illustrating a heat exchanger header according to a third embodiment.
  • FIG. 10 is a cross-sectional view illustrating a modified example of the heat exchanger header according to the third embodiment.
  • FIG. 10 is an exploded perspective view of a heat exchanger header according to a fourth embodiment.
  • FIG. 10 is a side view for explaining a heat exchanger header according to a fourth embodiment.
  • FIG. 10 is a side view for explaining a heat exchanger header according to a fifth embodiment.
  • a refrigeration cycle apparatus 300 includes a compressor 301, a four-way valve 302, a first heat exchanger 303, a pressure reducing device 304, a second heat exchanger 305, a first fan 306, a second fan 307, and a control device 310. At least one of the first heat exchanger 303 and the second heat exchanger 305 is provided as the heat exchanger according to each embodiment.
  • the compressor 301, four-way valve 302, first heat exchanger 303, pressure reduction device 304, and second heat exchanger 305 are connected to one another by refrigerant piping 308.
  • the refrigeration cycle apparatus 100 is provided with a refrigerant circuit through which refrigerant circulates.
  • the flow of refrigerant in the refrigerant circuit is switched by the four-way valve 302. As shown in FIG.
  • the refrigeration cycle apparatus 100 can switch between a first state in which the refrigerant flows sequentially through the compressor 301, first heat exchanger 303, pressure reduction device 304, and second heat exchanger 305, and a second state in which the refrigerant flows sequentially through the compressor 301, pressure reduction device 304, and first heat exchanger 303.
  • the high-temperature, high-pressure gaseous refrigerant discharged from the compressor 301 flows through the four-way valve 302 and into the second heat exchanger 305.
  • the refrigerant exchanges heat with air supplied by the second fan 307, condensing and becoming a high-pressure liquid.
  • the refrigerant flowing out of the second heat exchanger 305 is converted into a low-pressure gas-liquid two-phase state by the pressure reducing device 304 and flows into the first heat exchanger 303.
  • the refrigerant exchanges heat with air supplied by the first fan 306, evaporating and becoming a low-pressure gaseous state.
  • the refrigerant flowing out of the first heat exchanger 303 flows through the four-way valve 302 and is drawn into the compressor 301.
  • the refrigeration cycle apparatus 100 may be, for example, an air conditioner.
  • the first heat exchanger 303 may be an outdoor heat exchanger, and the second heat exchanger 305 may be an indoor heat exchanger.
  • the flow path switching device for switching between the first state and the second state is not limited to the four-way valve 302, but may also be a six-way valve.
  • the refrigeration cycle apparatus 100 may be, for example, a refrigerator or a showcase.
  • the refrigeration cycle apparatus 100 does not have to be equipped with the four-way valve 302.
  • ⁇ Example of heat exchanger configuration> 2 shows a heat exchanger 200 as an example of a heat exchanger according to each embodiment.
  • the first heat exchanger 303 and the second heat exchanger 305 is the heat exchanger 200.
  • the heat exchanger 200 includes a first header 201, a second header 202, and a heat exchange section 203.
  • the first header 201 has a first refrigerant inlet/outlet section 201A, a plurality of first insertion holes 201B, and a plurality of first refrigerant flow paths connecting the first refrigerant inlet/outlet section 201A and each of the plurality of first insertion holes 201B.
  • the second header 202 has a second refrigerant inlet/outlet section 202A, a plurality of second insertion holes 202B, and a plurality of second refrigerant flow paths connecting the second refrigerant inlet/outlet section 202A and each of the plurality of second insertion holes 202B.
  • the heat exchange section 203 has a plurality of fins 203 and a plurality of heat transfer tubes 20. Each of the plurality of heat transfer tubes 20 extends along the first direction DR1. Each of the plurality of heat transfer tubes 20 is arranged at intervals from one another in the third direction DR3.
  • Each of the multiple first insertion holes 201B is connected to one end of each of the multiple heat transfer tubes 20.
  • Each of the multiple second insertion holes 202B is connected to the other end of each of the multiple heat transfer tubes 20.
  • Each of the multiple first insertion holes 201B is joined to one end of each of the multiple heat transfer tubes 20 by a bonding material.
  • Each of the multiple second insertion holes 202B is joined to the other end of each of the multiple heat transfer tubes 20 by a bonding material.
  • the bonding material is, for example, brazing material.
  • Each of the multiple heat transfer tubes 20 is, for example, a flat tube.
  • each of the multiple heat transfer tubes 20 has a longitudinal direction and a lateral direction in a cross section perpendicular to its extension direction.
  • the material constituting each of the multiple heat transfer tubes 20 includes, for example, copper (Cu) or aluminum (Al). Note that each of the multiple heat transfer tubes 20 may also be a circular tube.
  • the multiple first refrigerant flow paths are connected in parallel to the first refrigerant inlet/outlet section 201A.
  • the multiple second refrigerant flow paths are connected in parallel to the second refrigerant inlet/outlet section 202A.
  • the refrigerant that flows into the first header 201 from the first refrigerant inlet/outlet port 201A is distributed to each of the multiple first refrigerant flow paths and flows into each of the multiple heat transfer tubes 20 through the multiple first insertion holes 201B.
  • the refrigerant flowing through each of the multiple heat transfer tubes 20 exchanges heat with air supplied by a fan (not shown), and then flows into the second header 202 through the multiple second insertion holes 202B.
  • the refrigerant that flows into the second header 202 merges through the multiple second refrigerant flow paths and flows out of the second header 202 from the second refrigerant inlet/outlet port 202A.
  • the refrigerant that flows into the second header 202 from the second refrigerant inlet/outlet port 202A is distributed to each of the multiple second refrigerant flow paths and flows into each of the multiple heat transfer tubes 20 through the multiple second insertion holes 202B.
  • the refrigerant flowing through each of the multiple heat transfer tubes 20 exchanges heat with air supplied by a fan (not shown), and then flows into the first header 201 through the multiple first insertion holes 201B.
  • the refrigerant that flows into the first header 201 merges through the multiple first refrigerant flow paths and flows out of the first header 201 through the first refrigerant inlet/outlet port 201A.
  • At least one of the first header 201 and the second header 202 is provided as a heat exchanger header for each of the embodiments described below.
  • the heat exchanger 200 is installed, for example, so that the first direction DR1 is horizontal and the third direction DR3 is vertical.
  • Embodiment 1 is a cross-sectional view showing a joint portion between the heat exchanger header 101 and each of the plurality of heat transfer tubes 20 according to the first embodiment.
  • the heat exchanger header 101 according to the first embodiment includes a main body 11.
  • the main body 11 has a first surface 11A.
  • the first surface 11A is a surface facing the heat exchange section 203 and intersects with a first direction DR1 in which the heat transfer tubes 20 extend.
  • the first surface 11A is, for example, perpendicular to the first direction DR1.
  • the second direction DR2 and the third direction DR3 are two directions that extend along the first surface 11A and intersect with each other.
  • the second direction DR2 extends along the longitudinal direction of the heat transfer tubes 20.
  • the main body 11 is provided with multiple insertion holes 1A, multiple stopper portions 2A, multiple first spaces S1, and multiple second spaces S2.
  • the main body 11 is provided with multiple sets of insertion holes 1A, stopper portions 2A, first spaces S1, and second spaces S2 shown in FIG. 3, spaced apart from one another in the third direction DR3.
  • each of the multiple insertion holes 1A opens to the first surface 11A.
  • the central axis (hole axis) of each of the multiple insertion holes 1A is aligned with the first direction DR1.
  • the internal space of each of the multiple insertion holes 1A is intended to be occupied by a single heat transfer tube 20 and a bonding material 30.
  • Each of the multiple stopper portions 2A is arranged to abut at least a portion of the end portion in the first direction DR1 of one heat transfer tube 20 inserted into each insertion hole 1A.
  • Each of the multiple stopper portions 2A is arranged, for example, to abut only the outer edge portion in the second direction DR2 of the end face in the first direction DR1 of one heat transfer tube 20 inserted into each insertion hole 1A.
  • the stopper portion 2A When viewed from the first direction DR1, the stopper portion 2A extends inward only in the second direction DR2 beyond the outer edge of the insertion hole 1A on the first surface 11A.
  • Each of the multiple stopper portions 2A prevents the end portion of each heat transfer tube 20 from entering each first space S1.
  • Each of the multiple stopper portions 2A faces the internal space of each insertion hole 1A.
  • Each of the multiple first spaces S1 is arranged on the opposite side of each of the multiple stopper portions 2A in the first direction DR1.
  • Each of the multiple first spaces S1 is in communication with the internal space of each of the multiple insertion holes 1A.
  • Each of the multiple first spaces S1 is arranged to overlap in the first direction DR1 with at least a portion of the internal space of each of the multiple insertion holes 1A.
  • Each first space S1 is intended to be a flow path for refrigerant flowing into or out of the heat transfer tube 20.
  • Each first space S1 is arranged to constitute part of the first refrigerant flow path or the second refrigerant flow path.
  • Each of the multiple second spaces S2 is arranged between the first surface 11A and each of the multiple stopper portions 2A in the first direction DR1. Each of the multiple second spaces S2 communicates with each of the multiple insertion holes 1A. Each of the multiple second spaces S2 communicates with the internal space of each of the multiple insertion holes 1A. Each second space S2 is a space into which a portion of the bonding material 30 is intended to flow. Each second space S2 is arranged on the opposite side of each stopper portion 2A from each of the first spaces S1 in the first direction DR1.
  • each of the multiple second spaces S2 when viewed from the first direction DR1, is positioned outward from the outer edge of the first surface 11A of each insertion hole 1A in the second direction DR2.
  • each of the multiple second spaces S2 When viewed from the first direction DR1, is positioned outward from the stopper portion 2A in the second direction DR2.
  • the outer edge of each insertion hole 1A on the first surface 11A is indicated by a dashed line.
  • each second space S2 is also positioned outward from the outer edge of the first surface 11A of each insertion hole 1A in the third direction DR3.
  • each second space S2 is provided as an annular space surrounding the outer edge of the first surface 11A of each insertion hole 1A. From a different perspective, it is preferable that each second space S2 is provided as an annular space surrounding the end of the heat transfer tube 20 inserted in each insertion hole 1A.
  • the main body 11 is further provided with a first refrigerant inlet/outlet section 201A and the remainder of the multiple first refrigerant flow paths, or a second refrigerant inlet/outlet section 202A and the remainder of the multiple second refrigerant flow paths.
  • a first refrigerant inlet/outlet section 201A and the remainder of the multiple first refrigerant flow paths or a second refrigerant inlet/outlet section 202A and the remainder of the multiple second refrigerant flow paths.
  • the bonding material 30 is arranged to close each insertion hole 1A when each of the multiple heat transfer tubes 20 is inserted into the corresponding insertion hole 1A.
  • FIG. 5 is a cross-sectional view showing a heat exchanger header 400 according to a comparative example.
  • the heat exchanger header 400 shown in Figure 5 differs from the heat exchanger header 101 in that it does not have a second space S2.
  • the through hole 401A provided in the first plate-shaped member 401 and the hole portion 402C provided in the second plate-shaped member 402 on the first plate-shaped member 401 side form an insertion hole
  • the hole portion 402A in the second plate-shaped member 402 that is continuous with the hole portion 402C in the first direction DR1 forms a stopper portion.
  • the second space S2 is disposed between the first surface 11A and the stopper portion 2A in the first direction DR1. Furthermore, when viewed from the first direction DR1, the second space S2 is disposed outward from the outer edge of the insertion hole 1A on the first surface 11A in the second direction DR2. This second space S2 can act as a space for retaining the bonding material 30 that flows into the heat exchanger header 101 from the insertion hole 1A when the heat exchanger header 101 is joined to the heat transfer tube 20 with the bonding material 30.
  • each second space S2 is positioned further outward than the outer edge on the first surface 11A of each insertion hole 1A in the third direction DR3.
  • Such second spaces S2 can retain not only the bonding material 30 that has flowed into the heat exchanger header 101 from the gap between the inner circumferential surfaces of the opposing insertion holes 1A and the outer circumferential surfaces of the heat transfer tubes 20 in the second direction DR2, but also the bonding material 30 that has flowed into the heat exchanger header 101 from the gap between the inner circumferential surfaces of the opposing insertion holes 1A and the outer circumferential surfaces of the heat transfer tubes 20 in the third direction DR3.
  • the stopper portion 2A extend inward from the outer edge of the insertion hole 1A only in the second direction DR2.
  • the distance between each of the multiple refrigerant flow paths provided in the flat tube and both longitudinal ends of the flat tube is longer than the distance between each of the multiple refrigerant flow paths provided in the flat tube and both lateral ends of the flat tube.
  • the stopper portion 2A extends inward from the outer edge of the insertion hole 1A only in the second direction DR2
  • the risk of the bonding material 30 reaching the stopper portion 2A blocking at least a portion of the refrigerant flow path of the flat tube is further reduced compared to when the stopper portion 2A also extends inward from the outer edge of the insertion hole 1A in the third direction DR3, i.e., when the stopper portion 2A is arranged to contact both lateral ends of the flat tube.
  • the bonding material 30 is unlikely to reach the stopper portion 2A, so even if the stopper portion 2A extends further inward than the outer edge of the insertion hole 1A in the third direction DR3, blocking of the flow path of the heat transfer tube 20 by the bonding material 30 can be suppressed.
  • the heat exchanger 200 equipped with the heat exchanger header 101 can prevent the flow path of the heat transfer tube 20 from being blocked by the bonding material 30 in the heat exchanger header 101, thereby preventing performance degradation due to blockage.
  • the refrigeration cycle device 300 equipped with the heat exchanger 200 can prevent performance degradation due to blockage in the heat exchanger 200, thereby preventing performance degradation due to blockage.
  • the main body 11 of the heat exchanger header 101 may be provided as a so-called stacked header.
  • the main body 11 has, for example, a plurality of members stacked so as to overlap each other in the first direction DR1.
  • the main body 11 has, for example, a first member 1, a second member 2, and a fourth member 4.
  • the multiple insertion holes 1A and at least a portion of each of the multiple second spaces S2 are provided in the first member 1.
  • the multiple stopper portions 2A and the multiple first spaces S1 are provided in the second member 2.
  • the remainder of the multiple first refrigerant flow paths or the multiple second refrigerant flow paths is provided in the fourth member 4.
  • the first member 1, the second member 2, and the fourth member 4 are joined together with a joining material.
  • the first member 1 has a first surface 11A and a second surface 1C located on the opposite side of the first surface 11A in the first direction DR1.
  • the first member 1 has a plurality of first through holes 1H that extend from the first surface 11A to the second surface 1C. The central axis of each of the plurality of first through holes 1H is aligned with the first direction DR1.
  • Each of the plurality of first through holes 1H has a first hole portion 1HA and a second hole portion 1HB that are continuous with the first direction DR1.
  • the first hole portion 1HA opens onto the first surface 11A.
  • the second hole portion 1HB opens onto the second surface 1C.
  • the opening end of the first hole portion 1HA, located on the opposite side of the first surface 11A in the first direction DR1 is connected to the opening end of the second hole portion 1HB, located on the first surface 11A side in the first direction DR1.
  • the opening width W1 of the first hole portion 1HA in the second direction DR2 is constant, for example, regardless of the position in the first direction DR1.
  • the opening width W1 of the first hole portion 1HA in the second direction DR2 is wider than the longitudinal width of the heat transfer tube 20.
  • the maximum opening width W2 of the second hole portion 1HB in the second direction DR2 is larger than the opening width W1 of the first hole portion 1HA in the second direction DR2.
  • the opening width of the second hole portion 1HB in the second direction DR2 gradually increases with increasing distance from the first surface 11A in the first direction DR1, for example.
  • the minimum opening width of the second hole portion 1HB in the second direction DR2 is equal to the opening width W1 of the first hole portion 1HA in the second direction DR2.
  • the opening width of the first hole portion 1HA in the third direction DR3 is constant, regardless of the position in the first direction DR1.
  • the opening width of the first hole portion 1HA in the third direction DR3 is wider than the width of the heat transfer tube 20 in the short direction.
  • the maximum opening width of the second hole portion 1HB in the third direction DR3 is larger than the opening width of the first hole portion 1HA in the third direction DR3.
  • the opening width of the second hole portion 1HB in the third direction DR3 gradually increases with increasing distance from the first surface 11A in the first direction DR1, for example.
  • Each of the first hole portion 1HA and second hole portion 1HB of the first through hole 1H has a first set of inner circumferential surfaces facing the second direction DR2 and a second set of inner circumferential surfaces corresponding to the third direction DR3.
  • the spacing between the first set of inner circumferential surfaces is constant, for example, regardless of the position in the first direction DR1.
  • the spacing between the second set of inner circumferential surfaces is constant, for example, regardless of the position in the first direction DR1.
  • the spacing between the first set of inner circumferential surfaces gradually increases, for example, as they approach the second member 2 in the first direction DR1.
  • the spacing between the second set of inner circumferential surfaces gradually increases, for example, as they approach the second member 2 in the first direction DR1.
  • the rate of change of the spacing per unit length in the first direction DR1 is, for example, constant.
  • the rate of change of the spacing per unit length in the first direction DR1 is, for example, constant.
  • the opening width W1 of the first hole portion 1HA in the second direction DR2 may gradually increase or decrease, for example, as it moves away from the first surface 11A in the first direction DR1.
  • the opening width of the first hole portion 1HA in the third direction DR3 may gradually increase or decrease as it moves away from the first surface 11A in the first direction DR1.
  • the opening width W1 of the second hole portion 1HB in the second direction DR2 may increase in stages as it moves closer to the second member 2 in the first direction DR1.
  • the opening width of the second hole portion 1HB in the third direction DR3 may increase in stages as it moves closer to the second member 2 in the first direction DR1.
  • the rate of change of the spacing per unit length in the first direction DR1 does not have to be constant on the first set of inner circumferential surfaces of the second hole portion 1HB.
  • the second member 2 has a plurality of second through holes 2H that penetrate in the first direction DR1.
  • the central axis of each of the plurality of second through holes 2H is aligned with the first direction DR1.
  • the second through hole 2H has a third hole portion 2HA and a fourth hole portion 2HB that are continuous with the first direction DR1.
  • the third hole portion 2HA opens onto a surface of the second member 2 facing the first member 1.
  • the fourth hole portion 2HB opens onto a surface of the second member 2 facing away from the first member 1.
  • the open end of the third hole portion 2HA located on the side of the fourth hole portion 2HB in the first direction DR1 is connected to the open end of the fourth hole portion 2HB located on the side of the third hole portion 2HA in the first direction DR1.
  • the maximum value W3 of the opening width in the second direction DR2 of the third hole portion 2HA is larger than the opening width W4 in the second direction DR2 of the fourth hole portion 2HB.
  • the opening width in the second direction DR2 of the third hole portion 2HA gradually widens, for example, in the first direction DR1, toward the first member 1.
  • the maximum value W3 of the opening width in the second direction DR2 of the third hole portion 2HA is wider than the longitudinal width of the heat transfer tube 20.
  • the minimum value of the opening width in the second direction DR2 of the third hole portion 2HA is equal to the opening width W4 in the second direction DR2 of the fourth hole portion 2HB, and is narrower than the longitudinal width of the heat transfer tube 20.
  • the opening width W4 of the fourth hole portion 2HB in the second direction DR2 is constant, for example, regardless of the position in the first direction DR1.
  • the opening width of the third hole portion 2HA in the third direction DR3 is constant, regardless of the position in the first direction DR1, for example.
  • the opening width of the third hole portion 2HA in the third direction DR3 is wider than the width of the heat transfer tube 20 in the short direction.
  • the opening width of the fourth hole portion 2HB in the third direction DR3 is constant, regardless of the position in the first direction DR1, for example.
  • the opening width of the fourth hole portion 2HB in the third direction DR3 is wider than the width of the heat transfer tube 20 in the short direction.
  • the fourth member 4 includes, for example, a fifth member 5, a sixth member 6, and a seventh member 7.
  • the fifth member 5 has a plurality of fifth through holes 5H.
  • the sixth member 6 has a plurality of sixth through holes 6H.
  • the seventh member 7 has a seventh through hole 7H.
  • the internal space of each of the plurality of fifth through holes 5H connects each of the plurality of first spaces S1 to each of the plurality of sixth through holes 6H.
  • the internal space of each of the plurality of sixth through holes 6H connects the internal space of the seventh through hole 7H to each of the plurality of fifth through holes 5H.
  • the seventh through hole 7H is connected to the first refrigerant inlet/outlet portion 201A or the second refrigerant inlet/outlet portion 202A.
  • the central axes of each of the plurality of fifth through holes 5H, the plurality of sixth through holes 6H, and the plurality of seventh through holes 7H are aligned along the first direction DR1.
  • Each of the first member 1, second member 2, fifth member 5, sixth member 6, and seventh member 7 can be prepared, for example, as a plate-like member.
  • Each of the first member 1, second member 2, fifth member 5, sixth member 6, and seventh member 7 is joined to one another, for example, with a bonding material.
  • the dimension (thickness) of each plate-like member in the first direction DR1 is, for example, 1 mm or more and 10 mm or less.
  • the above-mentioned through holes can be easily formed, for example, by cutting.
  • the multiple insertion holes 1A and all of the multiple second spaces S2 are provided in the first member 1, and the multiple stopper portions 2A and multiple first spaces S1 are provided in the second member 2.
  • the first member 1 and the second member 2 can be easily manufactured as independent members. Furthermore, the first member 1 and the second member 2 can be easily joined using a joining material. Therefore, the heat exchanger header 101 having the first member 1 and the second member 2 can be manufactured more easily than a heat exchanger header in which the multiple insertion holes 1A, multiple second spaces S2, multiple stopper portions 2A, and multiple first spaces S1 are provided in the same member.
  • the refrigerant that flows from each of the multiple heat transfer tubes 20 into each of the multiple first spaces S1 passes through the internal space of each of the multiple fifth through holes 5H, the internal space of each of the multiple sixth through holes 6H, and the internal space of the seventh through hole 7H, before flowing out from the first refrigerant inlet/outlet portion 201A or the second refrigerant inlet/outlet portion 202A.
  • the heat exchanger header 101 is installed, for example, so that the first direction DR1 and the second direction DR2 are horizontal and the third direction DR3 is vertical.
  • the fourth member 4 may be formed from a single member.
  • the first member 1 and the second member 2 may be formed from a single member.
  • the main body 11 may be formed from a single member. In such a heat exchanger header 101, although ease of manufacture is reduced compared to when the main body 11 has multiple members, clogging of the flow path of the heat transfer tube by the bonding material can be suppressed.
  • a portion of the second space S2 may be provided in the second member 2.
  • the second through hole 2H in the second member 2 may further have a fifth hole portion 2HC for forming a portion of the second space S2, located closer to the first surface 11A in the first direction DR1 than the third hole portion 2HA forming the stopper portion.
  • the maximum opening width of the fifth hole portion 2HC in the second direction DR2 is larger than the maximum opening width of the third hole portion 2HA in the second direction DR2.
  • a pair of inner circumferential surfaces of the fifth hole portion 2HC facing the second direction DR2 may be inclined with respect to the first direction DR1.
  • Embodiment 2 A heat exchanger header 102 according to the second embodiment will be described with reference to Fig. 7. Unless otherwise specified, the heat exchanger header 102 according to the second embodiment has the same configuration and effects as the heat exchanger header 101 according to the first embodiment. Therefore, the same components as those in the heat exchanger header 101 are denoted by the same reference numerals, and description thereof will not be repeated.
  • the heat exchanger header 102 includes a main body 12.
  • the main body 12 differs from the main body 11 in that it further includes a third member 3.
  • the first member 1, third member 3, second member 2, and fourth member 4 are stacked on top of each other in the first direction DR1 in the order shown.
  • the third member 3 is disposed between the first member 1 and second member 2 in the first direction DR1.
  • the third member 3 has a third through hole 3H that penetrates in the first direction DR1.
  • the opening width of the third through hole 3H in the second direction DR2 is constant, for example, in the first direction DR1.
  • the opening width W5 of the third through hole 3H in the second direction DR2 is larger than the opening width W1 of the first hole portion 1HA in the second direction DR2.
  • the opening width W5 of the third through hole 3H in the second direction DR2 is larger than the maximum opening width W3 of the third hole portion 2HA of the second through hole 2H in the second direction DR2.
  • the insertion hole 1A is provided as a first through hole 1H that penetrates the first member 1 in the first direction DR1.
  • the opening width of the insertion hole 1A provided in the first member 1 in the second direction DR2 is constant, for example, in the first direction DR1.
  • the insertion hole 1A does not have, for example, the second hole portion 1HB shown in FIG. 3.
  • the entire second space S2 is provided within the third through hole 3H of the third member 3.
  • the heat exchanger header 102 With the heat exchanger header 102, at least a portion of the second space S2 is provided within the third through-hole 3H of the third member 3, which is disposed between the first member 1 and the second member 2. This allows the volume of the second space S2 to be adjusted by adjusting at least one of the thickness of the third member 3 and the opening width of the third through-hole 3H. Therefore, with the heat exchanger header 102, it is easier to adjust the volume of the second space S2 than with the heat exchanger header 101, which does not have a third member 3.
  • the heat exchanger header 102 can also be modified in the same manner as the modified example of the heat exchanger header 101.
  • a portion of the second space S2 may be provided in the second member 2.
  • the second space S2 may be provided as a space that is continuous with the third member 3 and the second member 2.
  • the first through hole 1H provided in the first member 1 may have the second hole portion 1HB shown in FIG. 3.
  • the second space S2 may be provided as a space connected to each of the first member 1, the third member 3, and the second member 2.
  • the opening width of the third through hole 3H in the second direction DR2 may vary in the first direction DR1. In this case, it is sufficient that the maximum opening width W5 of the third through hole 3H in the second direction DR2 is greater than the opening width W1 of the first hole portion 1HA in the second direction DR2, and greater than the maximum opening width W3 of the third hole portion 2HA of the second through hole 2H in the second direction DR2.
  • Embodiment 3 A heat exchanger header 103 according to the third embodiment will be described with reference to Fig. 8. Unless otherwise specified, the heat exchanger header 103 according to the third embodiment has the same configuration and effects as the heat exchanger header 101 according to the first embodiment. Therefore, the same components as those in the heat exchanger header 101 are denoted by the same reference numerals, and description thereof will not be repeated.
  • the second through hole 2H has a first opening end 2H1 located on the first member 1 side in the first direction DR1, and a second opening end 2H2 located on the opposite side from the first member 1 in the first direction DR1.
  • the first opening end 2H1 faces the second hole portion 1HB of the first through hole 1H provided in the first member 1.
  • the second opening end 2H2 contacts the surface of the fifth member 5 facing the first surface 11A.
  • the opening width of the second through hole 2H in the second direction DR2 gradually decreases from the first opening end 2H1 to the second opening end 2H2 in the first direction DR1.
  • Each of a pair of inner circumferential surfaces of the second through hole 2H facing the second direction DR2 is an inclined surface inclined with respect to the central axis of the second through hole 2H extending along the first direction DR1.
  • the width of the first space S1 in the second direction DR2 gradually decreases as it approaches the fifth member 5 in the first direction DR1.
  • the opening width of the second through hole 2H in the third direction DR3 also gradually decreases from the first opening end 2H1 to the second opening end 2H2 in the first direction DR1.
  • the opening width of the second through-hole 2H in the second direction DR2 gradually decreases in the first direction DR1 from the first opening end 2H1 to the second opening end 2H2, making it less likely for separation to occur in the flow of refrigerant on the inner surface of the second through-hole 2H.
  • the heat exchanger header 103 can suppress an increase in pressure loss of the refrigerant flowing through the first space S1.
  • the heat exchanger header 103 can also be modified in the same manner as the modified example of the heat exchanger header 101.
  • a portion of the second space S2 may be provided in the second member 2.
  • the second space S2 may be provided as a space that is continuous with the third member 3 and the second member 2.
  • the opening width of the second through hole 2H in the third direction DR3 may be constant in the first direction DR1.
  • the heat exchanger header 103 may have a configuration similar to that of the heat exchanger header 102, except that the opening width of the second through hole 2H in the second direction DR2 gradually decreases from the first opening end 2H1 to the second opening end 2H2 in the first direction DR1.
  • Embodiment 4. 10 and 11 a heat exchanger header 104 according to the fourth embodiment will be described. Unless otherwise specified, the heat exchanger header 104 according to the fourth embodiment has the same configuration and effect as the heat exchanger header 102 according to the second embodiment. Therefore, the same components as those in the heat exchanger header 102 are denoted by the same reference numerals, and description thereof will not be repeated.
  • each of the multiple first spaces S1 has a first space portion S1A and a second space portion S1B that extend along the first surface 11A and in two directions that intersect with each other.
  • the first space portion S1A extends, for example, along the second direction DR2.
  • the second space portion S1B extends, for example, along the third direction DR3.
  • the first spatial portion S1A and the second spatial portion S1B are connected to each other.
  • the first spatial portion S1A and the second spatial portion S1B have, for example, an L-shape or a T-shape.
  • the first spatial portion S1A and the second spatial portion S1B are arranged so as to overlap with each of the multiple insertion holes 1A in the first direction DR1.
  • the first spatial portion S1A and the second spatial portion S1B are closed on the side opposite the insertion hole 1A in the first direction DR1.
  • the main body 14 is provided with a plurality of third spaces S3 that connect the second space portions S1B of two or more of the plurality of first spaces S1.
  • the first space portion S1A and the second space portion S1B of the first space S1 are provided in the second member 2.
  • the third space S3 is provided, for example, in the third member 3.
  • the second member has a plurality of second through holes 2H arranged at intervals in the third direction DR3.
  • the fourth hole portion 2HB of each of the plurality of second through holes 2H has a sixth hole portion 2BA and a seventh hole portion 2BB.
  • the first spatial portion S1A is provided within the sixth hole portion 2BA.
  • the second spatial portion S1B is provided within the seventh hole portion 2BB.
  • the sixth hole portion 2BA has a configuration similar to the fourth hole portion 2HB of the second through hole 2H shown in Figures 3 and 4. One end in the extension direction of the seventh hole portion 2BB is connected to the sixth hole portion 2BA.
  • one end in the extension direction of the seventh hole portion 2BB is connected to the end of the sixth hole portion 2BA in the extension direction.
  • the remaining second through holes 2H have one end in the extension direction of the seventh hole portion 2BB connected to a portion of the sixth hole portion 2BA other than the end in the extension direction.
  • the third hole portion 2HA is provided, for example, only in an area that overlaps with the sixth hole portion 2BA in the first direction DR1. Note that in the second through holes 2H, it is sufficient that the third hole portion 2HA is provided at least in an area that overlaps with the sixth hole portion 2BA in the first direction DR1.
  • the open end of the second through hole 2H which is located on the opposite side of the insertion hole 1A in the first direction DR1, is closed by the fifth member 5.
  • the second member 2 is further provided with a plurality of eighth through holes 2I that penetrate in the first direction DR1.
  • Each of the plurality of eighth through holes 2I is disposed between two adjacent sixth hole portions 2BA in the third direction DR3, and is also disposed between two adjacent seventh hole portions 2BB in the second direction DR2.
  • the third member 3 has a plurality of third through holes 3H arranged at intervals in the third direction DR3.
  • the third member 3 also has a plurality of ninth through holes 3I that penetrate in the first direction DR1 between two third through holes 3H adjacent to each other in the third direction DR3.
  • Each of the plurality of ninth through holes 3I extends, for example, along the second direction DR2.
  • a third space S3 is provided within the ninth through hole 3I.
  • the open end of the ninth through hole 3I which is located on the insertion hole 1A side in the first direction DR1, is blocked by the first member 1.
  • the sixth hole portion 2BA of the second through hole 2H is arranged to overlap with the third through hole 3H and the first through hole 1H in the first direction DR1.
  • the seventh hole portion 2BB of the second through hole 2H is arranged to overlap with portions of the third through hole 3H and the ninth through hole 3I in the first direction DR1.
  • the eighth through hole 2I is arranged to overlap with another portion of the ninth through hole 3I, the fifth through hole 5H, and the sixth through hole 6H in the first direction DR1.
  • the flow of refrigerant in the heat exchanger header 104 will be explained below. First, the flow of refrigerant flowing from the heat exchanger header 104 into the heat transfer tubes 20 will be explained.
  • the refrigerant that flows into the seventh through hole 7H of the seventh member 7 flows along the first direction DR1 inside the sixth through hole 6H, the fifth through hole 5H, and the eighth through hole 2I, and then flows into the third space S3 inside the ninth through hole 3I.
  • the refrigerant that flows into the third space S3 collides with the surface of the first member 1 located on the opposite side from the first surface 11A.
  • the flow of the refrigerant that collides with the first member 1 branches into the second direction DR2 within the third space S3.
  • Some of the refrigerant that collides with the first member 1 flows to one side in the second direction DR2 within the third space S3 and flows into one of the two second spatial portions S1B that communicate with the third space S3.
  • the refrigerant that flows into one of the second spatial portions S1B collides with a surface of the fifth member 5 located on the first surface 11A side, flows along the third direction DR3, and flows into the first spatial portion S1A that communicates with one of the second spatial portions S1B.
  • the refrigerant that flows into the first spatial portion S1A flows into a first heat transfer tube 20 of the multiple heat transfer tubes 20.
  • the refrigerant that collides with the first member 1 flows to the other side of the second direction DR2 within the third space S3 and flows into the other of the two second spatial portions S1B that communicate with the third space S3.
  • the refrigerant that flows into the other second spatial portion S1B collides with a surface of the fifth member 5 located on the first surface 11A side, flows along the third direction DR3, and flows into the first spatial portion S1A that communicates with the other second spatial portion S1B.
  • the refrigerant that flows into the first spatial portion S1A flows into a second heat transfer tube 20 of the multiple heat transfer tubes 20.
  • the flow of refrigerant flowing from the heat transfer tubes 20 into the heat exchanger header 104 is opposite to the flow of refrigerant flowing from the heat exchanger header 104 into the heat transfer tubes 20 described above.
  • the heat exchanger header 104 is installed, for example, so that the first direction DR1 and the second direction DR2 are horizontal and the third direction DR3 is vertical.
  • the effects of the heat exchanger header 104 will be explained by comparing it with a comparative heat exchanger header in which the refrigerant flowing inside the header is not branched.
  • the comparative heat exchanger header if there is variation in the insertion depth of each of the multiple heat transfer tubes 20, this variation will result in variation in the flow rate of refrigerant distributed from the heat exchanger header to each flow path of each heat transfer tube.
  • the heat exchanger header 104 the refrigerant flowing inside branches in at least two directions, so even if there is variation in the insertion depth of each of the multiple heat transfer tubes 20, variation in the flow rate of refrigerant distributed from the heat exchanger header 104 to each flow path of each heat transfer tube 20 can be suppressed. As a result, the performance of a heat exchanger equipped with the heat exchanger header 104 can be improved.
  • heat exchanger header 104 shown in Figures 10 and 11 allows the refrigerant to branch multiple times, which more effectively reduces variations in the flow rate of the refrigerant distributed to each heat transfer tube 20.
  • the heat exchanger header 104 can also be modified in the same manner as the modified example of the heat exchanger header 102.
  • a portion of the second space S2 may be provided in the second member 2.
  • the second space S2 may be provided as a space continuing to the third member 3 and the second member 2.
  • the opening widths in the second direction DR2 of the sixth hole portion 2BA and the seventh hole portion 2BB of the second through hole 2H may gradually decrease in the first direction DR1 from the first opening end 2H1 to the second opening end 2H2.
  • Embodiment 5 A heat exchanger header 105 according to the fifth embodiment will be described with reference to Fig. 12. Unless otherwise specified, the heat exchanger header 105 according to the fifth embodiment has the same configuration and effect as the heat exchanger header 104 according to the fifth embodiment. Therefore, the same components as those in the heat exchanger header 104 are denoted by the same reference numerals, and description thereof will not be repeated.
  • the heat exchanger header 105 is arranged so that the second direction DR2 is inclined with respect to the horizontal direction.
  • the extension directions of the insertion hole 1A and the first space S1 are each inclined with respect to the horizontal direction.
  • the extension directions of the first through hole 1H, the sixth hole portion 2BA of the second through hole 2H, and the third through hole 3H are each inclined with respect to the horizontal direction.
  • the second direction DR2 is inclined with respect to, for example, both the horizontal direction and the vertical direction.
  • the effects of the heat exchanger header 105 will be explained by comparing it with the heat exchanger header of the comparative example described above, in which the refrigerant flowing inside the header is not branched.
  • the heat exchanger header of the comparative example if there is variation in the insertion depth of each of the multiple heat transfer tubes 20, this variation will result in variation in the flow rate of refrigerant distributed from the heat exchanger header to each flow path of each heat transfer tube. This variation is particularly significant when the heat transfer tubes are flat tubes whose longitudinal direction is inclined relative to the horizontal.
  • the heat exchanger header 105 allows the refrigerant flowing inside to branch in at least two directions, so even if there is variation in the insertion depth of each of the multiple heat transfer tubes 20, each of which has a longitudinal direction inclined relative to the horizontal, the variation in the flow rate of the refrigerant distributed from the heat exchanger header 105 to each heat transfer tube 20 can be suppressed. As a result, the performance of a heat exchanger equipped with the heat exchanger header 105 can be improved.
  • the heat exchanger header 105 can also be modified in the same manner as the heat exchanger header 104 .

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

Abstract

L'invention concerne un collecteur d'échangeur de chaleur (101) pourvu d'une partie corps (11) ayant une première surface (11A). La partie corps est pourvue : d'un trou d'insertion (1A) qui s'ouvre sur la première surface et dans lequel une partie extrémité d'un tube de transfert de chaleur (20) est insérée ; d'une partie butée (2A) qui vient en butée contre au moins une partie de la partie extrémité du tube de transfert de chaleur insérée dans le trou d'insertion ; d'un premier espace (S1) qui est disposé sur le côté opposé du trou d'insertion par rapport à la partie butée dans un premier sens (DR1) croisant la première surface, et qui communique avec le trou d'insertion ; et d'un second espace (S2) qui est disposé entre la première surface et la partie butée dans le premier sens et qui communique avec le trou d'insertion. Vu depuis le premier sens, le second espace est disposé vers l'extérieur par rapport au trou d'insertion et à la partie butée dans un second sens (DR2) le long de la première surface.
PCT/JP2024/007578 2024-02-29 2024-02-29 Collecteur d'échangeur de chaleur, échangeur de chaleur et dispositif à cycle de réfrigération Pending WO2025182019A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/007578 WO2025182019A1 (fr) 2024-02-29 2024-02-29 Collecteur d'échangeur de chaleur, échangeur de chaleur et dispositif à cycle de réfrigération

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2024/007578 WO2025182019A1 (fr) 2024-02-29 2024-02-29 Collecteur d'échangeur de chaleur, échangeur de chaleur et dispositif à cycle de réfrigération

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02109185U (fr) * 1989-02-17 1990-08-30
JP2004069228A (ja) * 2002-08-08 2004-03-04 Denso Corp 熱交換器
JP2006017442A (ja) * 2004-06-04 2006-01-19 Calsonic Kansei Corp 熱交換器
JP2008528945A (ja) * 2005-02-02 2008-07-31 キャリア コーポレイション ヘッダ内に多孔プレートを有する熱交換器
JP2014052135A (ja) * 2012-09-07 2014-03-20 Daikin Ind Ltd 冷媒熱交換器
WO2017051728A1 (fr) * 2015-09-22 2017-03-30 株式会社デンソー Échangeur thermique et procédé de fabrication d'échangeur thermique
WO2019193757A1 (fr) * 2018-04-06 2019-10-10 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération le comportant
WO2019207805A1 (fr) * 2018-04-27 2019-10-31 日立ジョンソンコントロールズ空調株式会社 Échangeur de chaleur et climatiseur doté de celui-ci
WO2019211893A1 (fr) * 2018-05-01 2019-11-07 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération
WO2020262378A1 (fr) * 2019-06-28 2020-12-30 ダイキン工業株式会社 Échangeur de chaleur et dispositif de pompe à chaleur
WO2023275936A1 (fr) * 2021-06-28 2023-01-05 三菱電機株式会社 Distributeur de réfrigérant, échangeur de chaleur, et dispositif à cycle de réfrigération

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02109185U (fr) * 1989-02-17 1990-08-30
JP2004069228A (ja) * 2002-08-08 2004-03-04 Denso Corp 熱交換器
JP2006017442A (ja) * 2004-06-04 2006-01-19 Calsonic Kansei Corp 熱交換器
JP2008528945A (ja) * 2005-02-02 2008-07-31 キャリア コーポレイション ヘッダ内に多孔プレートを有する熱交換器
JP2014052135A (ja) * 2012-09-07 2014-03-20 Daikin Ind Ltd 冷媒熱交換器
WO2017051728A1 (fr) * 2015-09-22 2017-03-30 株式会社デンソー Échangeur thermique et procédé de fabrication d'échangeur thermique
WO2019193757A1 (fr) * 2018-04-06 2019-10-10 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération le comportant
WO2019207805A1 (fr) * 2018-04-27 2019-10-31 日立ジョンソンコントロールズ空調株式会社 Échangeur de chaleur et climatiseur doté de celui-ci
WO2019211893A1 (fr) * 2018-05-01 2019-11-07 三菱電機株式会社 Échangeur de chaleur et dispositif à cycle de réfrigération
WO2020262378A1 (fr) * 2019-06-28 2020-12-30 ダイキン工業株式会社 Échangeur de chaleur et dispositif de pompe à chaleur
WO2023275936A1 (fr) * 2021-06-28 2023-01-05 三菱電機株式会社 Distributeur de réfrigérant, échangeur de chaleur, et dispositif à cycle de réfrigération

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