EP3978856B1 - Échangeur de chaleur à plaques et distributeur pour échangeur de chaleur à plaques - Google Patents

Échangeur de chaleur à plaques et distributeur pour échangeur de chaleur à plaques Download PDF

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Publication number
EP3978856B1
EP3978856B1 EP20818340.0A EP20818340A EP3978856B1 EP 3978856 B1 EP3978856 B1 EP 3978856B1 EP 20818340 A EP20818340 A EP 20818340A EP 3978856 B1 EP3978856 B1 EP 3978856B1
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EP
European Patent Office
Prior art keywords
distributing
fluid medium
flow channel
heat exchanger
flow channels
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.)
Active
Application number
EP20818340.0A
Other languages
German (de)
English (en)
Other versions
EP3978856A1 (fr
EP3978856A4 (fr
Inventor
Nobuo Tanaka
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Hisaka Works Ltd
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Hisaka Works Ltd
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Publication date
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Publication of EP3978856A1 publication Critical patent/EP3978856A1/fr
Publication of EP3978856A4 publication Critical patent/EP3978856A4/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
    • F28D9/0075—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements the plates having openings therein for circulation of the heat-exchange medium from one conduit to another
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0037—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
    • F28D9/0068—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements with means for changing flow direction of one heat exchange medium, e.g. using deflecting zones
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
    • F28F9/0273—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple holes
    • 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
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators

Definitions

  • the present invention relates to a plate heat exchanger as defined in the preamble of claim 1, and to a distributor as defined in the preamble of claim 5.
  • Such devices are known from JP H 486 492 .
  • this plate heat exchanger includes a plurality of heat transfer plates 101.
  • the plurality of heat transfer platers 101 are stacked on each other in a thickness direction of each heat transfer plate 101 to thereby form first flow channels Fa through which a first fluid medium A, which is to evaporate or to be condensed, is circulated, and second flow channels Fb through which a second fluid medium B for causing the first fluid medium A to evaporate or condense is circulated.
  • the second fluid medium B serves as a fluid medium to exchange heat with the first fluid medium A.
  • the plurality of heat transfer plates 101 are stacked on each other to thereby form a first fluid medium supply channel Fa1 that communicates with the first flow channels Fa and allows the first fluid medium A to flow into the first flow channels Fa, a first fluid medium discharge channel Fa2 that communicates with the first flow channels Fa and allows the first fluid medium A to flow out of the first flow channels Fa, a second fluid medium supply channel Fb1 that communicates with the second flow channels Fb and allows the second fluid medium B to flow into the second flow channels Fb, and a second fluid medium discharge channel Fb2 that communicates with the second flow channels Fb and allows the second fluid medium B to flow out of the second flow channels Fb.
  • Each of the plurality of heat transfer plates 101 is a plate having a rectangular shape, and has a plurality of valleys and ridges on both surfaces thereof.
  • the ridges of the adjacent heat transfer plates 101 cross and abut against each other to thereby form the first flow channels Fa or the second flow channels Fb between the adjacent heat transfer plates 101.
  • the first flow channels Fa and the second flow channels Fb are formed alternately with the heat transfer plates 101 respectively interposed therebetween.
  • Each of the plurality of heat transfer plates 101 has through holes at corners. These through holes at the corners include a first through hole 102, a second through hole 103, a third through hole 104, and a fourth through hole 105.
  • the first through holes 102 are lined up in an X-axis direction to form a first fluid medium supply channel Fa1.
  • the second through holes 103 are lined up in the X-axis direction to form a first fluid medium discharge channel Fa2.
  • the third through holes 104 are lined up in the X-axis direction to form a second fluid medium supply channel Fb1.
  • the fourth through holes 105 are lined up in the X-axis direction to form a second fluid medium discharge channel Fb2.
  • the first fluid medium A supplied to the first fluid medium supply channel Fa1 flows into the first flow channels Fa for circulating therethrough, followed by flowing out to the first fluid medium discharge channel Fa2.
  • the second fluid medium B supplied to the second fluid medium supply channel Fb1 flows into the second flow channels Fb for circulating therethrough, followed by flowing out to the second fluid medium discharge channel Fb2.
  • the first fluid medium A flowing through the first flow channels Fa and the second fluid medium B flowing through the second flow channels Fb exchange heat with each other via the heat transfer plates 101 to thereby cause the first fluid medium A to evaporate or condense.
  • the circulating resistance of the first fluid medium A circulating through the first fluid medium supply channel Fa1 increases.
  • the circulating resistance causes unevenness between the amount of the first fluid medium A flowing into the first flow channels Fa on the inlet side of the first fluid medium supply channel Fa1 and the amount of the first fluid medium A flowing into the first flow channels Fa on the innermost side of the first fluid medium supply channel Fa1. That is, in the plate heat exchanger 100, uneven distribution of the first fluid medium A results from the circulating resistance as the number of the heat transfer plates 100 stacked on each other increases. This uneven distribution degrades heat exchange performance of the plate heat exchanger 100 as compared with the case where no uneven distribution occurs.
  • the plate heat exchanger 100 has limitations to increase heat exchange performance (i.e., evaporating performance or condensing performance) by increasing the number of the heat transfer plates 101 stacked on each other.
  • Patent Literature 1 JP H11-287572 A
  • a plate heat exchanger includes: a heat exchanger body including a plurality of heat transfer plates each having a surface extending in a direction orthogonal to a certain direction, the plurality of heat transfer plates being stacked on each other in the certain direction to form a plurality of first flow channels through which a first fluid medium is circulated and at least one second flow channel through which a second fluid medium is circulated so as to be alternately arranged with the plurality of heat transfer plates respectively interposed therebetween; and a distributor to allow the first fluid medium to be distributed to the plurality of first flow channels, in which two or more heat transfer plates continuously lined up out of the plurality of heat transfer plates each have a through hole at a mutually overlapping position as seen from the certain direction, the two or more heat transfer plates continuously lined up each have the through hole lined up in the certain direction to form a communicating space communicating with the plurality of first flow channels, the distributor has a tubular wall defining a hollow portion that extends in the certain direction in the communicating space and through which the first fluid medium
  • the configuration can be such that the distributing flow channel has: an opening portion communicating with the hollow portion; and a connecting flow channel extending along a peripheral direction of the tubular wall and connecting the opening portion and the distributing portion to each other.
  • the configuration can be such that the distributing portion includes a distributing portion inlet that communicates with the hollow portion and through which the first fluid medium flows into the distributing portion from the hollow portion, the distributor includes a direction changing member arranged at a position corresponding to the distributing portion inlet in the hollow portion of the tubular wall, and the direction changing member has an internal space that allows the hollow portion and the distributing portion inlet to communicate with each other and through which the first fluid medium can be circulated, and causes the first fluid medium to pass through the internal space to allow a flow direction of the first fluid medium to be directed along the thickness direction of the tubular wall at a position of the distributing portion inlet.
  • the configuration can be such that the heat exchanger body has, at a boundary position between the communicating space and each of the plurality of first flow channels, an opening portion through which the first fluid medium passes when flowing into the each of the plurality of first flow channels from the communicating space, and the opening portion causes differential pressure between the communicating space and the each of the plurality of first flow channels when the first fluid medium is circulated in the heat exchanger body.
  • a distributor for a plate heat exchanger is configured such that in the plate heat exchanger including a heat exchanger body including a plurality of heat transfer plates each having a surface extending in a direction orthogonal to a certain direction, the plurality of heat transfer plates being stacked on each other in the certain direction to form a plurality of first flow channels through which a first fluid medium is circulated and at least one second flow channel through which a second fluid medium is circulated so as to be alternately arranged with the plurality of heat transfer plates respectively interposed therebetween, the distributor is arranged in a communicating space formed by through holes respectively of two or more heat transfer plates continuously lined up out of the plurality of heat transfer plates, the through holes line up in the certain direction, the communicating space communicating with the plurality of first flow channels, to allow the first fluid medium to be distributed to the plurality of first flow channels, the distributor includes a tubular wall defining a hollow portion that extends in the certain direction and through which the first fluid medium supplied from outside the plate heat exchanger is circulated when the distributor is
  • a plate heat exchanger causes a first fluid medium to evaporate or condense by exchanging heat with a second fluid medium.
  • this heat exchanger includes: a heat exchanger body 2 that includes a plurality of heat transfer plates 21 each having a surface extending in a direction orthogonal to a certain direction; and a distributor 5 arranged inside the heat exchanger body 2 and configured to distribute a first fluid medium A.
  • the plurality of heat transfer plates 21 are schematically illustrated with projections and recesses omitted for ease of understanding of the configuration.
  • the heat exchanger body 2 includes: the plurality (four or more in this embodiment) of heat transfer plates 21 stacked on each other in the certain direction; a plurality of gaskets 22 arranged respectively between the plurality of heat transfer plates 21 stacked on each other; and a pair of end plates 23, 24 that sandwich the plurality of heat transfer plates 21 stacked on each other (i.e., a heat transfer plate group 21A) from both sides thereof in the certain direction.
  • a first flow channel Ra through which the first fluid medium A is circulated or a second flow channel Rb through which a second fluid medium B is circulated is formed between each adjacent heat transfer plates 21 out of the plurality of heat transfer plates 21 stacked on each other in the certain direction.
  • the heat transfer plates 21 of this embodiment each have a rectangular shape.
  • a direction in which the heat transfer plates 21 are stacked on each other is represented as an X-axis direction in the orthogonal coordinate system
  • a direction in which a short side of each of the plurality of heat transfer plates 21 extends is represented as a Y-axis direction of the orthogonal coordinate system
  • a direction in which a long side of the heat transfer plate 21 extends is represented as a Z-axis direction of the orthogonal coordinate system.
  • Two or more heat transfer plates 21 continuously lined up in the X-axis direction out of the plurality of heat transfer plates 21 each have a through hole (first hole 211) at a position overlapping each other as seen from the X-axis direction.
  • These two or more heat transfer plates 21 continuously lined up have their first holes 211 lined up in the X-axis direction to thereby form a communicating space Ra1 communicating with the first flow channel Ra (see Fig. 5 ).
  • each heat transfer plate 21 has the first hole 211, and the communicating space Ra1 extends from one end to the other end in the X-axis direction of the heat transfer plate group 21A.
  • each heat transfer plate 21 is a metal plate, and has a rectangular shape elongated in the Z-axis direction.
  • the heat transfer plate 21 has both surfaces in the X-axis direction each having a number of projections and recesses formed thereon.
  • the projections of this embodiment extend along a Y-Z surface (i.e., surface including the Y-axis direction and the Z-axis direction) to thereby form ridges.
  • the recesses extend along the Y-Z surface to form valleys.
  • the heat transfer plate 21 is formed by pressing a flat metal plate.
  • a ridge (projection) on one surface in the X-axis direction of the heat transfer plate 21 and a valley (recess) on the other surface thereof are formed at the same portion of the heat transfer plate 21. That is, at the portion of the heat transfer plate 21, when the one surface forms the ridge (projection) 211, the other surface forms the valley (recess) 212, and when the one surface forms the valley (recess), the other surface forms the ridge (projection).
  • Each heat transfer plate 21 has through holes (first hole 211, second hole 212, third hole 213, and fourth hole 214) at corners (see Fig. 3 ).
  • Each of the through holes 211, 212, 213, 214 is a circular hole. Further, the first hole 211, the second hole 212, the third hole 213, and the fourth hole 214 share the same diameter (hole diameter).
  • the gaskets 22 are sandwiched respectively between the heat transfer plates 21 and brought into tight contact with the heat transfer plates 21 to define flow channels or the like through which the first fluid medium A or the second fluid medium B flows between the adjacent heat transfer plates 21, and secure liquid tightness of the flow channels or the like.
  • Each of the gaskets 22 has at least one endless annular portion.
  • Each of the pair of end plates 23, 24 is a plate-shaped member having a shape corresponding to the heat transfer plates 21.
  • the pair of end plates 23, 24 are provided to firmly sandwich the heat transfer plate group 21A, that is, the plurality of (200 in an example of this embodiment) heat transfer plates 21 stacked on each other, and are thus members each having a thick plate shape with sufficient strength.
  • One end plate 23 out of the pair of end plates 23, 24 has through holes 231, 232, 233, 234 at positions corresponding to the respective through holes (i.e., the first hole 211, the second hole 212, the third hole 213, and the fourth hole 214) of each heat transfer plate 21.
  • Each of the pair of end plates 23, 24 of this embodiment has a rectangular plate shape. Further, the one end plate 23 has the through holes 231, 232, 233, 234 at corners.
  • the plurality of heat transfer plates 21 are stacked on each other so as to have the gaskets 22 respectively sandwiched between the respective adjacent heat transfer plates 21 to form the heat transfer plate group 21A.
  • the pair of end plates 23, 24 sandwiching the heat transfer plates group 21A from the outside in the X-axis direction are fastened with long bolts 25.
  • this configuration allows the ridges of each adjacent heat transfer plates 21 to cross and abut against each other, and allows the gaskets 22 sandwiched by the respective heat transfer plates 21 to be in tight contact therewith. Consequently, a space with liquid tightness is formed between, for example, each adjacent heat transfer plates 21.
  • the space with liquid tightness is a space through which the first fluid medium A or the second fluid medium B flows, such as the first flow channel Ra, the second flow channel Rb, the communicating space Ra1, or the like. Details of the space will be described below.
  • the heat exchanger body 2 has the first flow channel Ra or the second flow channel Rb formed between each adjacent heat transfer plates 21.
  • the first flow channel Ra and the second flow channel Rb are alternately arranged in the X-axis direction with the heat transfer plates 21 respectively interposed therebetween. That is, the heat exchanger body 2 has a plurality of first flow channels Ra and at least one second flow channel Rb.
  • the first fluid medium A flows through the first flow channels Ra to one side in the Z-axis direction (i.e., the upper side in Fig. 4 ), and the second fluid medium B flows through the second flow channels Rb to the other side in the Z-axis direction (i.e., the lower side in Fig. 6 ).
  • the first holes 211 are lined up in the X-axis direction to form the communicating space Ra1 that communicates with the first flow channels Ra and through which the distributor 5 is arranged.
  • the communicating space Ra1 extends from one end to the other end in the X-axis direction of the heat transfer plate group 21A.
  • One end (i.e., the left side in Fig. 5 ) in the X-axis direction of the communicating space Ra1 communicates with an external space through the through hole 231 of the one end plate 23, and the other end (i.e., the right side in Fig. 5 ) in the X-axis direction thereof is in contact with the other end plate 24 or the heat transfer plate immediately before the end plate 24 (i.e., the heat transfer plate having no through holes 211, 212, 213, 214).
  • the second holes 212 are lined up in the X-axis direction to form a first fluid medium discharge channel Ra2 that communicates with the first flow channels Ra and allows streams of the first fluid medium A flowing out of the first flow channels Ra to join together and be guided to one end in the X-axis direction of the heat transfer plate group 21A.
  • the first fluid medium discharge channel Ra2 extends from the one end to the other end in the X-axis direction of the heat transfer plate group 21A.
  • One end in the X-axis direction of the first fluid medium discharge channel Ra2 communicates with the external space through the through hole 232 of the one end plate 23, and the other end in the X-axis direction thereof is in contact with the other end plate 24 or the heat transfer plate immediately before the end plate 24.
  • the third holes 213 are lined up in the X-axis direction to form a second fluid medium supply channel Rb1 that communicates with the second flow channels Rb and through which the second fluid medium B externally supplied flows into the second flow channels Rb.
  • the second fluid medium supply channel Rb1 extends from the one end to the other end in the X-axis direction of the heat transfer plate group 21A.
  • One end in the X-axis direction of the second fluid medium supply channel Rb1 communicates with the external space through the through hole 233 of the one end plate 23, and the other end in the X-axis direction thereof is in contact with the other end plate 24 or the heat transfer plate immediately before the end plate 24.
  • the fourth holes 214 are lined up in the X-axis direction to form a second fluid medium discharge channel Rb2 that communicates with the second flow channels Rb and allows streams of the second fluid medium B flowing out of the second flow channels Rb to join together and be guided to the one end in the X-axis direction of the heat transfer plate group 21A.
  • the second fluid medium discharge channel Rb2 extends from the one end to the other end in the X-axis direction of the heat transfer plate group 21A.
  • One end in the X-axis direction of the second fluid medium discharge channel Rb2 communicates with the external space through the through hole 234 of the one end plate 23, and the other end in the X-axis direction thereof is in contact with the other end plate 24 or the heat transfer plate immediately before the end plate 24.
  • the distributor 5 is configured to distribute the first fluid medium A supplied from outside the heat exchanger body 2 to each of the plurality of first flow channels Ra.
  • the distributor 5 has a wall having a tubular shape (tubular wall) defining a hollow portion S that extends in the X-axis direction in the communicating space Ra1 and through which the first fluid medium A supplied from outside the heat exchanger body 2 is circulated.
  • the tubular wall of this embodiment has a cylindrical shape, and the distributor 5 is formed only of the tubular wall. That is, the distributor (tubular wall) 5 of this embodiment has a cylindrical shape.
  • the distributor 5 has a plurality of tubular portions 50 overlapped with each other in a radial direction (i.e., a thickness direction of the tubular wall).
  • This distributor 5 has a distributing flow channel 6 through which the first fluid medium A can be circulated, between at least two tubular portions 50 continuously overlapped in the radiation direction out of the plurality of tubular portions 50 (see Fig. 10 and Fig. 11 ).
  • the distributor 5 of this embodiment extends from one end to the other end in the X-axis direction of the communicating space Ra1. That is, one end in the X-axis direction of the distributor 5 is located at the through hole 231 of the one end plate 23, and the other end in the X-axis direction of the distributor 5 is in contact with the other end plate 24 or the heat transfer plate immediately before the end plate 24.
  • the hollow portion S of the distributor 5 communicates with the external space of the heat exchanger body 2 through the through hole 231 of the one end plate 23.
  • the distributor 5 of this embodiment has the two tubular portions 50 (i.e., an outer tubular portion 51 and an inner tubular portion 52) overlapped with each other in the radial direction.
  • the distributing flow channel 6 is formed between the two tubular portions 51, 52 overlapped with each other in the radial direction.
  • the outer tubular portion 51 is a member having a cylindrical shape.
  • the outer tubular portion 51 has an outer diameter smaller than the diameter of the first hole 211 of each heat transfer plate 21.
  • a gap G is formed between an outer peripheral surface 51a of the outer tubular portion 51 and opening edge portions respectively of the first holes 211 of the heat transfer plates 21 in the state where the distributor 5 is arranged through the communicating space Ra1 (see Fig. 4 ).
  • the gap G is maintained, for example, by arranging a flange at an end in the X-axis direction of the distributor 5 and fixing the flange to an opening edge portion of the through hole 231 of the one end plate 23.
  • the outer tubular portion 51 has a plurality of through holes 511.
  • Each of the plurality of through holes 511 is a hole through which the first fluid medium A that has flown through the distributing flow channel 6 flows out of the distributor 5.
  • the plurality of through holes 511 are provided at locations corresponding to the respective downstream ends (i.e., outflow portions 616: see Fig. 14 ) of the distributing flow channel 6.
  • the plurality of through holes 511 are arranged at intervals in the X-axis direction from each other.
  • the portion on the other side in the Z-axis direction of the outer tubular portion 51 i.e., the lower portion in Fig. 12 ) of this embodiment has a row of the through holes 511 formed to extend through the entire region in the X-axis direction.
  • a plurality of (two in the example shown in Fig. 12 ) rows of the through holes 511 each including the plurality of (16 in the example shown in Fig. 12 ) through holes 511 lined up in the X-axis direction at intervals from each other are arranged away from each other in a peripheral direction of the outer tubular portion 51.
  • the inner tubular portion 52 is a member having a cylindrical shape and arranged inside the outer tubular portion 51, and has an outer diameter corresponding to the inner diameter of the outer tubular portion 51.
  • the inner tubular portion 52 has an outer peripheral surface 52a on which a groove 521 having a shape corresponding to the distributing flow channel 6 is formed.
  • the inner tubular portion 52 has an inner peripheral surface 52b defining (surrounding) the hollow portion S. Further, the inner tubular portion 52 has an inflow opening 53 allowing the hollow portion S and the inside of the groove 521 to communicate with each other.
  • the inner tubular portion 52 described as above is arranged inside the outer tubular portion 51, that is, the outer tubular portion 51 and the inner tubular portion 52 are overlapped with each other in the radial direction to thereby allow a radially outward opening of the groove 521 of the inner tubular portion 52 to be covered with the inner peripheral surface 51b of the outer tubular portion 51.
  • a space (region) surrounded by the groove 521 and the inner peripheral surface 51b functions as the distributing flow channel 6.
  • the distributing flow channel 6 allows the first fluid medium A that has flown in from the hollow portion S to be distributed to one side and the other side in the X-axis direction at least once, and to flow out of the distributor 5 at positions corresponding to the respective ones of the plurality of first flow channels Ra lined up in the X-axis direction.
  • the distributing flow channel 6 includes a first distributing portion (distributing portion) 603 and the plurality of the outflow portions 616. Further, the distributing flow channel 6 includes an inflow opening portion (opening portion) 601 and a first connecting flow channel (connecting flow channel) 602.
  • the first distributing portion 603 allows the first fluid medium A that has flown into the distributing flow channel 6 to be distributed to the one side and the other side in the X-axis direction.
  • the plurality of outflow portions 616 each are directly or indirectly connected to the first distributing portion 603 and penetrate though the outer tubular portion 51 to thereby communicate with the communicating space Ra1 or the corresponding ones of the first flow channels Ra.
  • the inflow opening portion 601 communicates with the hollow portion S of the distributor 5.
  • the first connecting flow channel 602 extends along the peripheral direction of the distributor 5, and connects the inflow opening portion 601 and the first distributing portion 603 to each other.
  • Fig. 13 shows a pattern of a path of the distributing flow channel 6 in the state where the distributor 5 is cut for development along the X-axis direction (a direction of a center axis C of the distributor 5: see Fig. 7 ) so as to pass through an opposite position in the peripheral direction to a center of the inflow opening 53.
  • Fig. 14 is a partial enlarged view of Fig. 13 .
  • Fig. 15 shows the pattern of the path of the distributing flow channel 6 in the state where the distributor 5 is cut for development along the X-axis direction so as to pass through the center of the inflow opening 53 of the inner tubular portion 52.
  • the distributing flow channel 6 of this embodiment includes, sequentially from its upstream end toward its downstream end, the inflow opening portion 601, the first connecting flow channel 602, the first distributing portion 603, a first distributing flow channel 604, a peripheral distributing portion 605, a peripheral distributing flow channel 606, a second distributing portion 607, a second distributing flow channel 608, a second connecting flow channel 609, a third distributing portion 610, a third distributing flow channel 611, a third connecting flow channel 612, a fourth distributing portion 613, a fourth distributing flow channel 614, a fourth connecting flow channel 615, and the outflow portions 616.
  • the distributing flow channel 6 is substantially linearly symmetrical with a virtual line C1 that passes through the center of the inflow opening 53 (inflow opening portion 601) and extends in the peripheral direction. Further, the distributing flow channel 6 is substantially linearly symmetrical with a virtual line C2 that passes through the center and extends in the X-axis direction.
  • a detailed description will be hereinafter given on a circulating path of the first fluid medium A from the inflow opening portion 601 to one of the outflow portions 616, with reference to Fig. 13 to Fig. 15 .
  • the inflow opening portion 601 is the upstream end of the distributing flow channel 6, and communicates with the hollow portion S to thereby allow the first fluid medium A flowing through the hollow portion S to flow into the distributing flow channel 6.
  • the inflow opening portion 601 is formed by the inflow opening 53 of the inner tubular portion 52.
  • the inflow opening portion 601 of this embodiment is arranged at a central position in the X-axis direction of the distributor 5.
  • the first connecting flow channel 602 extends along the peripheral direction to thereby connect the inflow opening portion 601 and the first distributing portion 603 to each other.
  • the first connecting flow channel 602 of this embodiment includes a channel segment extending to one side (i.e., the right side in Fig. 13 ) and a channel segment extending to the other side (i.e., the left side in Fig. 13 ), in the peripheral direction from the inflow opening portion 601. That is, two first connecting flow channels 602 are arranged.
  • the first distributing portion 603 allows the first fluid medium A that has flown into the first distributing portion 603 to be distributed to one side (i.e., the upper side in Fig. 13 ) and the other side (i.e., the lower side in Fig. 13 ) in the X-axis direction.
  • the first distributing portion 603 includes: a first distributing portion inlet (distributing portion inlet) 6031 that is arranged on an opposite side in the peripheral direction to the inflow opening portion 601 and through which the first fluid medium A flows in; a one side outlet (one side distributing portion outlet) 6032 through which the first fluid medium A flows out to the one side in the X-axis direction; and an other side outlet (other side distributing portion outlet) 6033 through which the first fluid medium A flows out to the other side in the X-axis direction.
  • the first distributing portion 603 of this embodiment includes: a first distributing portion inlet 6031a that communicates with the first connecting flow channel 602 extending to the one side in the peripheral direction from the inflow opening portion 601; and a first distributing portion inlet 6031b that communicates with the first connecting flow channel 602 extending to the other side in the peripheral direction from the inflow opening portion 601. That is, the first distributing portion 603 includes the two first distributing portion inlets 6031a and 6031b.
  • the first distributing flow channel 604 includes a channel segment extending to the one side and a channel segment extending to the other side in the X-axis direction from the first distributing portion 603. That is, a pair of first distributing flow channels 604 are arranged to extend from the single first distributing portion 603. Specifically, one first distributing flow channel 604a out of the pair of first distributing flow channels 604 extends to one side in the X-axis direction from the one side outlet 6032 of the first distributing portion 603. The other first distributing flow channel 604b out of the pair of first distributing flow channels 604 extends to the other side in the X-axis direction from the other side outlet 6033 of the first distributing portion 603. The one first distributing flow channel 604a and the other first distributing flow channel 604b share the same length.
  • the peripheral distributing portion 605 communicates with the corresponding one of the pair of first distributing flow channels 604, and allows the first fluid medium A flowing in through the first distributing flow channel 604 to be distributed to the one side and the other side in the peripheral direction.
  • the peripheral distributing portion 605 is arranged at an interval in the X-axis direction from the first distributing portion 603, and includes: a peripheral distributing portion inlet 6051 through which the first fluid medium A flows in; a one side outlet 6052 through which the first fluid medium A flows out to the one side in the peripheral direction; and an other side outlet 6053 through which the first fluid medium A flows out to the other side in the peripheral direction.
  • the peripheral distributing flow channel 606 includes a channel segment extending to one side and a channel segment extending to the other side in the peripheral direction from the peripheral distributing portion 605. That is, a pair of peripheral distributing flow channels 606 are arranged to extend from the single peripheral distributing portion 605. Specifically, one peripheral distributing flow channel 606a out of the pair of peripheral distributing flow channels 606 extends to one side in the peripheral direction from the one side outlet 6052 of the peripheral distributing portion 605. The other peripheral distributing flow channel 606b out of the pair of peripheral distributing flow channels 606 extends to the other side in the peripheral direction from the other side outlet 6053 of the peripheral distributing portion 605. The one peripheral distributing flow channel 606a and the other peripheral distributing flow channel 606b share the same length.
  • the second distributing portion 607 communicates with the corresponding one of the pair of peripheral distributing flow channels 606, and allows the first fluid medium A flowing in through the peripheral distributing flow channel 606 to be distributed to the one side and the other side in the X-axis direction.
  • the second distributing portion 607 is arranged at an interval in the peripheral direction from the peripheral distributing portion 605, and includes: a second distributing portion inlet 6071 through which the first fluid medium A flows in; a one side outlet 6072 through which the first fluid medium A flows out to the one side in the X-axis direction; and an other side outlet 6073 through which the first fluid medium A flows out to the other side in the X-axis direction.
  • the second distributing flow channel 608 includes a channel segment extending to one side and a channel segment extending to the other side in the X-axis direction from the second distributing portion 607. That is, a pair of second distributing flow channels 608 are arranged to extend from the single second distributing portion 607. Specifically, one second distributing flow channel 608a out of the pair of second distributing flow channels 608 extends to one side in the X-axis direction from the one side outlet 6072 of the second distributing portion 607. The other second distributing flow channel 608b out of the pair of second distributing flow channels 608 extends to the other side in the X-axis direction from the other side outlet 6073 of the second distributing portion 607. The one second distributing flow channel 608a and the other second distributing flow channel 608b share the same length.
  • the second connecting flow channel 609 extends in the peripheral direction to thereby connect the corresponding one of the pair of second distributing flow channels 608 and the third distributing portion 610 to each other.
  • the second connecting flow channel 609 of this embodiment extends from the downstream end of the second distributing flow channel 608 to the other side in the peripheral direction.
  • the third distributing portion 610 communicates with the second connecting flow channel 609, and allows the first fluid medium A flowing in through the second connecting flow channel 609 to be distributed to the one side and the other side in the X-axis direction.
  • the third distributing portion 610 is arranged at an interval in the peripheral direction from the downstream end of the second distributing flow channel 608, and includes: a third distributing portion inlet 6101 through which the first fluid medium A flows in; a one side outlet 6102 through which the first fluid medium A flows out to the one side in the X-axis direction; and an other side outlet 6103 through which the first fluid medium A flows out to the other side in the X-axis direction.
  • the third distributing flow channel 611 includes a channel segment extending to one side and a channel segment extending to the other side in the X-axis direction from the third distributing portion 610. That is, a pair of third distributing flow channels 611 are arranged to extend from the single third distributing portion 610. Specifically, one third distributing flow channel 611a out of the pair of third distributing flow channels 610 extends to one side in the X-axis direction from the one side outlet 6102 of the third distributing portion 610. The other third distributing flow channel 611b out of the pair of third distributing flow channels 611 extends to the other side in the X-axis direction from the other side outlet 6103 of the third distributing portion 610. The one third distributing flow channel 611a and the other third distributing flow channel 611b share the same length.
  • the third connecting flow channel 612 extends in the peripheral direction to thereby connect the corresponding one of the pair of third distributing flow channels 611 and the fourth distributing portion 613 to each other.
  • the third connecting flow channel 612 of this embodiment extends from the downstream end of the third distributing flow channel 611 to the one side in the peripheral direction.
  • the fourth distributing portion 613 communicates with the third connecting flow channel 612, and allows the first fluid medium A flowing in through the third connecting flow channel 612 to be distributed to the one side and the other side in the X-axis direction.
  • the fourth distributing portion 613 is arranged at an interval in the peripheral direction from the downstream end of the third distributing flow channel 611, and includes: a fourth distributing portion inlet 6131 through which the first fluid medium A flows in; a one side outlet 6132 through which the first fluid medium A flows out to the one side in the X-axis direction; and an other side outlet 6133 through which the first fluid medium A flows out to the other side in the X-axis direction.
  • the fourth distributing flow channel 614 includes a channel segment extending to one side and a channel segment extending to the other side in the X-axis direction from the fourth distributing portion 613. That is, a pair of fourth distributing flow channels 614 are arranged to extend from the single fourth distributing portion 613. Specifically, one fourth distributing flow channel 614a out of the pair of fourth distributing flow channels 614 extends to one side in the X-axis direction from the one side outlet 6132 of the fourth distributing portion 613. The other fourth distributing flow channel 614b out of the pair of fourth distributing flow channels 614 extends to the other side in the X-axis direction from the other side outlet 6133 of the fourth distributing portion 613. The one fourth distributing flow channel 614a and the other fourth distributing flow channel 614b share the same length.
  • the fourth connecting flow channel 615 extends in the peripheral direction to thereby connect the corresponding one of the pair of fourth distributing flow channels 614 and the corresponding one of the outflow portions 616 to each other.
  • the fourth connecting flow channel 615 of this embodiment extends from the downstream end of the fourth distributing flow channel 614 to the other side in the peripheral direction.
  • the outflow portion 616 is the downstream end of the distributing flow channel 6, and communicates with the communicating space Ra1 or the first flow channels Ra to thereby allow the first fluid medium A that has flown through the distributing flow channel 6 to flow out to the communicating space Ra1 or the first flow channels Ra.
  • the outflow portion 616 is formed by the corresponding one of the through holes 511 of the outer tubular portion 51.
  • the distributing flow channel 6 of this embodiment includes the circulating paths each from the inflow opening portion 601 to the outflow portion 616 configured as above, and the number of such circulating paths is the same as the number of (32 in this embodiment) outflow portions 616. Further, in the distributing flow channel 6, the circulating paths in the number equal to the number of the outflow portions 515 share the same distance.
  • the first fluid medium A when the first fluid medium A is supplied from, for example, a pipe connected to the through hole 231 of the one end plate 23 to the hollow portion S of the distributor 5 through the through hole 231, the first fluid medium A flows through the hollow portion S to the other side in the X-axis direction.
  • the first fluid medium A reaches the inflow opening 53 (inflow opening portion 601) provided at an intermediate portion in the X-axis direction of the hollow portion S, the first fluid medium A flows into the distributing flow channel 6 through the inflow opening 53 (inflow opening portion 601).
  • the first fluid medium A that has flown in the distributing flow channel 6 flows through the pair of first connecting flow channels 602 each extending in the peripheral direction from the inflow opening portion 601 to flow into the first distributing portion 603 and to be distributed to the one side and the other side in the X-axis direction by the first distributing portion 603.
  • the first fluid medium A that has been distributed by the first distributing portion 603 flows through the pair of first distributing flow channels 604 each extending from the first distributing portion 603 to flow into the peripheral distributing portion 605 arranged at an interval on the one side in the X-axis direction from the first distributing portion 603 and into the peripheral distributing portion 605 arranged at an interval on the other side in the X-axis direction from the first distributing portion 603, and to be distributed to the one side and the other side in the peripheral direction by the respective peripheral distributing portions 605.
  • the first fluid medium A that has been distributed by each of the peripheral distributing portions 605 flows through the corresponding one of the peripheral distributing flow channels 606 to flow into the corresponding one of the second distributing portions 607 to which the peripheral distributing flow channel 606 is connected, and to be distributed to the one side and the other side in the X-axis direction by the second distributing portion 607.
  • the first fluid medium A that has been distributed by each of the second distributing portions 607 sequentially flows through the corresponding one of the second distributing flow channels 608 and the corresponding one of the second connecting flow channels 609 extending in the peripheral direction from the second distributing flow channel 608 to flow into the third distributing portion 610 arranged at an interval on the one side in the X-axis direction from the second distributing portion 607 and into the third distributing portion 610 arranged at an interval on the other side in the X-axis direction from the second distributing portion 607, and to be distributed to the one side and the other side in the X-axis direction by the respective third distributing portions 610.
  • the first fluid medium A that has been distributed by each of the third distributing portions 610 sequentially flows through the corresponding one of the third distributing flow channels 611 and the corresponding one of the third connecting flow channels 612 extending in the peripheral direction from the third distributing flow channel 611 to flow into the fourth distributing portion 613 arranged at an interval on the one side in the X-axis direction from the third distributing portion 610 and into the fourth distributing portion 613 arranged at an interval on the other side in the X-axis direction from the third distributing portion 610, and to be distributed to the one side and the other side in the X-axis direction by the respective fourth distributing portions 613.
  • the first fluid medium A that has been distributed by each of the fourth distributing portions 613 sequentially flows through the corresponding one of the fourth distributing flow channels 614 and the corresponding one of the fourth connecting flow channels 615 extending in the peripheral direction from the fourth distributing flow channel 614 to reach the outflow portion 616 arranged at an interval on the one side in the X-axis direction from the fourth distributing portion 613 and the outflow portion 616 arranged at an interval on the other side in the X-axis direction from the fourth distributing portion 613.
  • the first fluid medium A that has reached the plurality of outflow portions 616 that serve as the downstream ends of the distributing channel 6 flows out of the distributor 5 (flows out to the communicating space Ra1) through the through holes 511 of the outer tubular portion 51 serving as the respective outflow portions 616.
  • the first fluid medium A that has flown into the distributing flow channel 6 through the inflow opening 53 (inflow opening portion 601) provided at the intermediate portion in the X-axis direction of the hollow portion S is distributed to the one side and the other side in the X-axis direction by the first distributing portion 603, the respective second distributing portions 607, the respective third distributing portions 610, and the respective fourth distributing portions 613, which are respectively arranged at different positions in the X-axis direction, to be thereby supplied to the entire region in the X-axis direction of the communicating space Ra1 while uneven distribution thereof is suppressed.
  • the first fluid medium A that has flown out to the communicating space Ra1 flows along the outer peripheral surface (outer peripheral surface of the outer tubular portion 51) 51a of the distributor 5 in the gap around the periphery of the distributor 5 (i.e., the gap formed between the periphery of the distributor 5 and the members defining the communicating space Ra1), and flows into the first flow channels Ra located close in the X-axis direction to the through hole 511 through which the first fluid medium A has flown out.
  • An opening at an upstream end of each of the first flow channels Ra in the heat exchanger body 2 of this embodiment, specifically, the opening located at a boundary position between the first flow channel Ra and the communicating space Ra1 is an opening portion (upstream end opening portion) RaO through which the first fluid medium A having flown through the distributing flow channel 6 and flown out from the distributor 5 to the communicating space Ra1 flows into the first flow channel Ra.
  • the opening portion RaO is set to have such a size (opening area) as to cause differential pressure between the communicating space Ra1 and the first flow channel Ra when the first fluid medium A is being circulated within the heat exchanger body 2.
  • the opening portion RaO has an opening area smaller than the sectional area of an assumed flow channel (flow channel region) of the first fluid medium A that flows out of the corresponding one of the through holes 511 to flow toward the opening portion RaO along the outer peripheral surface 51a of the distributor 5 (i.e., the outer peripheral surface of the outer tubular portion). More specifically, as shown in Fig.
  • the opening area of the opening portion RaO is smaller than the value that is obtained by obtaining the dimension by subtracting an outer diameter ⁇ of the distributor 5 from an inner diameter ⁇ of the first hole 211 of each heat transfer plate 21, and then multiplying the dimension by a dimension ⁇ between two heat transfer plates 21 defining the first flow channel Ra (i.e., a sectional area of the flow channel: the area of the dotted regions in Fig. 16B ).
  • the opening width in the X-axis direction is made smaller than the dimension ⁇ between two heat transfer plates 21 defining the first flow channel Ra (preferably, made smaller than a half of the dimension ⁇ between two heat transfer plates 21 defining the first flow channel Ra (that is, smaller than ⁇ /2)) to have the opening area of the opening portion RaO smaller than the sectional area of the flow channel, thereby causing the differential pressure.
  • the differential pressure means the state where the pressure in the communicating space Ra1 is higher than the pressure in the first flow channel Ra.
  • the first fluid medium A that has flown out through the distributor 5 is accumulated in the gap around the periphery of the distributor 5, and flows into the first flow channels Ra while the upstream end opening portions RaO of the first flow channels Ra are subjected to substantially constant pressure.
  • variation (unevenness) in the amount of the first fluid medium A flowing into the fist flow channels Ra is suppressed.
  • the first fluid medium A that has flown into the first flow channels Ra flows through the respective first flow channels Ra to one side in the Z-axis direction, and then flows out to the first fluid medium discharge channel Ra2.
  • the first fluid medium A that has flown out from the first flow channels Ra flows through the first fluid medium discharge channel Ra1 while streams thereof join together in the first fluid medium discharge channel Ra2, and is discharged out of the heat exchanger body 2.
  • the second fluid medium B when the second fluid medium B is supplied from, for example, a pipe connected to the through hole 233 of the one end plate 23 to the second fluid medium supply channel Rb1, the second fluid medium B flows through the second fluid medium supply channel Rb1 to flow into the plurality of second flow channels Rb.
  • the second fluid medium B flows to the other side in the Z-axis direction through each of the plurality of second flow channels Rb, and then flows out into the second fluid medium discharge channel Rb2. Subsequently, the second fluid medium B that has flown out from these second flow channels Rb flows through the second fluid medium discharge channel Rb2 while streams thereof join together in the second fluid medium discharge channel Rb2, and is discharged to the outside.
  • the first fluid medium A is circulated through the first flow channels Ra and the second fluid medium B is circulated through the second flow channels Rb, as described above, so that the first fluid medium A and the second fluid medium B exchange heat through the heat transfer plates 21 respectively defining the first flow channels Ra and the second flow channels Rb to cause the first fluid medium A to evaporate or condense.
  • the heat exchanger 1 as described above is configured such that the first fluid medium A is distributed to the one side and the other side in the X-axis direction by the distributing portions 603, 607, 610, and 613 of the distributing flow channel 6 before the first fluid medium A that has been supplied to the hollow portion S of the distributor 5 from the outside of the heat exchanger body 2 flows out through the plurality of outflow portions 616 to reach the first flow channels Ra.
  • This configuration suppresses a difference in the distances of the circulating paths of the first fluid medium A from the inlet of the hollow portion S to the respective first flow channels Ra, as compared with the conventional plate heat exchanger (see Fig. 27 ) in which first flow channels arranged further away from the inlet for the first fluid medium result in longer circulating paths.
  • This configuration suppresses uneven distribution of the first fluid medium A to the first flow channels Ra (that is, uneven distribution of the first fluid medium A to the plurality of first flow channels Ra) that results from the difference in the distances (i.e., circulating resistances) of the circulating paths of the first fluid medium A from the inlet of the heat exchanger body 2.
  • the distributing flow channel 6 includes the inflow opening portion 601 communicating with the hollow portion S, and the first connecting flow channels 602 each extending along the peripheral direction of the distributor 5 and connecting the inflow opening portion 601 and the first distributing portion 603 to each other.
  • the first fluid medium A flowing in the X-axis direction through the hollow portion S flows into the distributing flow channel 6 through the inflow opening portion 601 while having a flow component (velocity component) of this circulating direction
  • the first fluid medium A flows through the first connecting flow channels 602 each extending in the peripheral direction, followed by flowing into the first distributing portion 603, so that the flow component of the X-axis direction is lost (or made small) in the flow of the first fluid medium A flowing into the first distributing portion 603.
  • This configuration suppresses (or eliminates) the difference between the amount of the first fluid medium A flowing out through the one side outlet 6032 and the amount of the first fluid medium A flowing out through the other side outlet 6033 when the first distributing portion 603 distributes the first fluid medium A flowing in therethrough to the one side and the other side in the X-axis direction. Consequently, the uneven distribution of the first fluid medium A to the first flow channels Ra is more effectively suppressed.
  • the upstream end opening portion RaO of each of the first flow channels Ra has differential pressure caused between the communicating space Ra1 and the corresponding first flow channel Ra when the first fluid medium A is circulated through the heat exchanger body 2.
  • the differential pressure is caused when the first fluid medium A that has flown through one outflow portion 616 flows into a plurality of first flow channels Ra located at the corresponding position to the outflow portion 616, despite a difference in the distances between the one outflow portion 616 and the respective upstream end opening portions RaO located at the corresponding position. Accordingly, the first fluid medium A accumulated in the communicating space Ra1 passes through each upstream end opening portion RaO under the same pressure to flow into the plurality of first flow channels Ra corresponding thereto.
  • the difference in the amounts of the first fluid medium A flowing into the first flow channels Ra can be suppressed even in the configuration that the number of the first flow channels Ra is greater than the number of the outflow portions 616.
  • the uneven distribution of the first fluid medium A into the plurality of first flow channels Ra is suitably suppressed.
  • the specific configuration of the distributing flow channel 6 is not limited.
  • the aforementioned embodiment has been described by taking, for example, the case where the distributing flow channel 6 has a linearly symmetrical configuration with the virtual line C1 extending in the peripheral direction and the virtual line C2 extending in the X-axis direction (see Fig. 13 ), without limitation thereto.
  • the distributing flow channel 6 can have non-symmetrical patterns of the paths. Any configuration can be employed, provided that the distributing flow channel 6 has no difference in distances between the circulating routes from the inflow opening portion 601 to the respective outflow portions 616, or can have a smaller difference in such distances than that of the conventional plate heat exchanger (see Fig. 26 to Fig. 28 ).
  • the aforementioned embodiment has been described by taking, for example, the case where the distributing flow channel 6 has the circulating paths with the same distance from the inflow opening portion 601 to the respective outflow portions 616, without limitation thereto.
  • the distances of the circulating paths from the inflow opening portion 601 to the respective outflow portions 616 can be different from each other.
  • all the circulating paths can have different distances, or some of the circulating paths among the plurality of circulating paths can have different distances.
  • any configuration can be employed, provided that there is no difference in distances between the circulating paths from the inflow opening portion 601 to the respective outflow portions 616, or there is a smaller difference in such distances than that of the conventional plate heat exchanger (see Fig. 26 to Fig. 28 ).
  • the distributing flow channel 6 includes the plurality of distributing portions (in the example of the aforementioned embodiment, one first distributing portion 603, four second distributing portions 607, eight third distributing portions 610, and sixteen fourth distributing portions 613), without limitation thereto. Any configuration can be employed, provided that the distributing flow channel 6 has at least one distributing portion.
  • Such a configuration also allows the first fluid medium A to be distributed to the one side and the other side in the X-axis direction, to be thereby capable of suppressing the difference in the distances between the circulating paths of the first fluid medium A from the through hole 231 of the one end plate 23 to the respective first flow channels Ra. That is, the difference in the lengths (path lengths) between the shortest circulating path and the longest circulating path among the circulating paths from the through hole 231 of the one end plate to the respective first flow channels Ra can be made smaller than that of the conventional plate heat exchanger 100 in which, as shown in Fig. 26 to Fig.
  • the distances of the circulating paths of the first fluid medium A from an inlet to respective first flow channels Fa become longer as the first flow channels Fa are located further away in a certain direction (i.e., a direction in which heat transfer plates 101 are stacked on each other) from the inlet.
  • This configuration can suppress uneven distribution of the first fluid medium A to the plurality of first flow channels Ra resulting from, for example, circulating resistances.
  • the aforementioned embodiment has been described by taking, for example, the case where the distributing flow channel 6 includes the peripheral distributing portions 605 each allowing the first fluid medium A to be distributed to the one side and the other side in the peripheral direction of the distributor 5, without limitation thereto.
  • the distributing flow channel 6 can be configured without the peripheral distributing portions 605.
  • the configuration can be such that the distributing portion (first distributing portion 603) is arranged at the upstream end of the distributing flow channel 6. That is, the distributing flow channel 6 can be configured such that the first distributing portion 603 is arranged at the upstream end of the distributing flow channel 6 and the first distributing portion inlet 6031 of the first distributing portion 603 communicates with the hollow portion S.
  • the inflow opening 53 of the inner tubular portion 52 forms the first distributing portion inlet 6031 of the first distributing portion 603.
  • the distributor 5 have a direction changing member 7, as shown in Fig. 20 to Fig. 22 , arranged at a position corresponding to the inflow opening 53 (first distributing portion inlet 6031) in the hollow portion S.
  • This direction changing member 7 has an internal space S 1 allowing the hollow portion S and the inflow opening 53 (first distributing portion inlet 6031) to communicate with each other and allowing the first fluid medium A to be circulated therethrough, and is configured to cause the first fluid medium A to pass through the internal space S 1 to change the flowing direction of the first fluid medium A to a direction along the radial direction of the distributor 5 (i.e., thickness direction of the distributor (tubular wall) 5 at the position of the inflow opening 53).
  • the direction changing member 7 has: a body 70 defining the internal space S1 through which the first fluid medium A can be circulated; a first opening 71 allowing the external space of the body 70 and the internal space S1 to communicate with each other; and a second opening 72 arranged at a different position from the first opening 71 and allowing the external space of the body 70 and the internal space S1 to communicate with each other.
  • the body 70 has a shape corresponding to the hollow portion S at a position corresponding to the inflow opening 53. That is, the body 70 has such a shape as to be internally fitted to the inner tubular portion 52.
  • the first opening 71 is arranged at a position where the first fluid medium A flowing in the hollow portion S can flow into the internal space S 1 when the direction changing member 7 is arranged in the hollow portion S of the distributor 5.
  • the first opening 71 is arranged at a position away from the second opening 72 in order to secure a flowing distance in the hollow portion S of the first fluid medium A that has flown through the first opening 71.
  • the first opening 71 is arranged at a position further away from the second opening 72 opposed to the inflow opening 53 than a central axis C of the distributor 5 (i.e., a position lower than the central axis C in Fig. 22 ).
  • the first fluid medium A when it is flowing into the inflow opening 53 makes small or loses its the flow component (velocity component) of the direction of the central axis C as the distance over which the first fluid medium A flows along the radial direction (specifically, the thickness direction of the distributor 5 at the position of the inflow opening 53) toward the inflow opening 53 (second opening 72) becomes longer.
  • the distance over which the first fluid medium A flows through the internal space S1 is preferably 10 or more times as long as the diameter of the inflow opening 53.
  • the second opening 72 is arranged at a position opposed to or directly communicating with the inflow opening 53 when the direction changing member 7 is arranged in the hollow portion S of the distributor 5.
  • the direction changing member 7 is preferably configured to enable the first fluid medium A in the hollow portion S to pass through the position of the direction changing member 7 in the direction of the central axis C.
  • two first openings 71 are arranged respectively at positions opposed to each other in the direction of the central axis C when the direction changing member 7 is arranged in the hollow portion S of the distributor 5. Further, in the direction changing member 7 shown in Fig.
  • the body 70 has such a shape as to form a gap between the body 70 and the inner peripheral surface 52b of the inner tubular portion 52 at a position opposite to the inflow opening 53 with the central axis C therebetween, when the direction changing member 7 is arranged in the hollow portion S of the distributor 5.
  • the direction changing member 7 is arranged immediately before the first distributing portion inlet 6031 (i.e., the position corresponding to the first distributing portion inlet 6031) in the hollow portion S to thereby allow the first fluid medium A flowing along the radial direction of the distributor 5 to flow into the first distributing portion 603 (first distributing portion inlet 6031).
  • the first fluid medium A having no flow component (velocity component) or a small flow component (velocity component) of the direction of the central axis C flows into the first distributing portion 603.
  • This configuration suppresses (or eliminates) the difference between the amount of the first fluid medium A flowing out through the one side outlet 6032 and the amount of the first fluid medium A flowing out through the other side outlet 6033 when the first fluid medium A is distributed to the one side and the other side in the X-axis direction by the first distributing portion 603, consequently effectively suppressing uneven distribution of the first fluid medium A to the first flow channels Ra.
  • the aforementioned embodiment has been described by taking, for example, the case where the distributor 5 has the inlet opening 53 arranged at the center in the direction of the central axis C, without limitation thereto.
  • the inflow opening 53 can be arranged at any position in the X-axis direction.
  • any configuration can be employed, provided that the distributing flow channel 6 has such a pattern as to have the circulating paths from the inflow opening portion 601 to the respective outflow portions 616, of which the distances are smaller than those of the conventional plate heat exchanger.
  • the heat exchanger 1 includes one distributor 5, without limitation thereto.
  • the plurality of (two in the example shown in Fig. 23 ) distributors 5 can be arranged in a row in the direction of the central axis C in the communicating space Ra1. That is, the heat exchanger 1 can include the plurality of distributors 5.
  • the aforementioned embodiment has been described by taking, for example, the case where the distributor 5 has a tubular shape with openings at both ends in the direction of the central axis C, without limitation thereto.
  • the distributor 5 can have a so-called bottomed tubular shape with one end closed in the direction of the central axis C.
  • the aforementioned embodiment has been described by taking, for example, the case where the distributor 5 has a cylindrical shape, without limitation thereto.
  • the distributor 5 can have, for example, a polygonal tubular shape that is polygonal in cross section, or a tubular shape that is oval in cross section. That is, the configuration can be such that the distributor 5 has the hollow portion S, enables the first fluid medium A to be supplied from the outside to the hollow portion S, and enables the first fluid medium A to be circulated through the hollow portion S.
  • the distributor 5 has the distributing flow channel 6 formed (defined) by the groove 521 formed on the outer peripheral surface 52a of the inner tubular portion 52 and the inner peripheral surface 51b of the outer tubular portion 51, without limitation thereto.
  • the distributing flow channel 6 can be formed by a groove formed on the inner peripheral surface 51b of the outer tubular portion 51 and the outer peripheral surface 52a of the inner tubular portion 52.
  • the distributing flow channel 6 can be formed by a groove formed on the inner peripheral surface 51b of the outer tubular portion 51 and a groove formed on the outer peripheral surface 52a of the inner tubular portion 52.
  • the aforementioned embodiment has been described by taking, for example, the case where the distributor 5 has the two tubular portions 50 (i.e., the outer tubular portion 51 and the inner tubular portion 52), without limitation thereto.
  • the distributor 5 can have three or more tubular portions 50 overlapped with each other in the thickness direction of their tubular walls (i.e., the radial direction in the example of the aforementioned embodiment).
  • the distributing flow channel 6 can be formed in the three or more tubular portions 50 continuously overlapped with each other in the radial direction, that is, formed by the three or more tubular portions 50 continuously overlapped with each other in the radial direction.
  • the distributing flow channel 6 can be formed such that, when the distributing flow channel 6 has three tubular portions (i.e., the outer tubular portion 51, an intermediate tubular portion 55, and the inner tubular portion 52) overlapped with each other in the radial direction, as shown in Fig. 24 , the intermediate tubular portion 55 has a slit (corresponding to the groove 521 of the aforementioned embodiment penetrating therethrough in the thickness direction) 521a having the same shape as the pattern of the path (see Fig.
  • the aforementioned embodiment has been described by taking, for example, the case where the distributor 5 allows the first fluid medium A to flow into the distributing flow channel 6 through the inflow opening 53 opening in the radial direction (i.e., the thickness direction of the tubular wall), without limitation thereto.
  • the configuration can be such that the first fluid medium A flows into the distributing flow channel 6 through the inflow opening 53 opening in the direction of the central axis C of the distributor 5.
  • the aforementioned embodiment has been described by taking, for example, the case where, in the distributor 5, the number of the through holes 511 (outflow portions 616) lined up in the X-axis direction on the outer tubular portion 51 is smaller than the number of the first flow channels Ra, without limitation thereto.
  • the number of the through holes 511 lined up in the X-axis direction of the outer tubular portion 51 can be equal to the number of the first flow channels Ra, or greater than the number of the first flow channels Ra.
  • the aforementioned embodiment has been described by taking, for example, the case where, in the heat exchanger 1, the gap is formed between, for example, the distributor 5 and the members defining the communicating space Ra1, without limitation thereto. There can be no gap between the distributor 5 and the members defining the communicating space Ra1. In this case, the first fluid medium A that has flown out through the outflow portions 616 of the distributing flow channel 6 directly flows into the first flow channels Ra.
  • the aforementioned embodiment has been described by taking, for example, the case where, in the heat exchanger 1, the pair of end plates 23, 24 are placed away from each other by unfastening the long bolts 25 to undo the sandwiching in the X-axis direction of the heat transfer plate group 21A, so that the heat transfer plates 21, the gaskets 22, the distributor 5, or the like can be replaced.
  • the aforementioned embodiment is not limited to this configuration.
  • the heat exchanger 1 can be configured such that the flow channels (e.g., the first flow channels Ra, the second flow channels Rb) are closed in a liquid tight manner by brazing the peripheral portion of the heat transfer plate group 21A.
  • the aforementioned embodiment has been described by taking, for example, the case where the distributor 5 is one of the members forming the heat exchanger 1, without limitation thereto.
  • the configuration can be such that the distributor 5 is additionally arranged to a first fluid medium supply channel (a flow channel through which the first fluid medium A is supplied to the first flow channels Ra: corresponding to the communicating space Ra1 of the aforementioned embodiment) of the conventional plate heat exchanger (i.e., the plate heat exchanger formed only by the heat exchanger body 2 of the aforementioned embodiment).
  • the present invention can provide a plate heat exchanger capable of suppressing uneven distribution of a first fluid medium to a plurality of first flow channels, and can provide a distributor for the plate heat exchanger.
  • a plate heat exchanger includes: a heat exchanger body including a plurality of heat transfer plates each having a surface extending in a direction orthogonal to a certain direction, the plurality of heat transfer plates being stacked on each other in the certain direction to form a plurality of first flow channels through which a first fluid medium is circulated and at least one second flow channel through which a second fluid medium is circulated so as to be alternately arranged with the plurality of heat transfer plates respectively interposed therebetween; and a distributor to allow the first fluid medium to be distributed to the plurality of first flow channels, in which two or more heat transfer plates continuously lined up (i.e., arranged adjacent to each other) out of the plurality of heat transfer plates each have a through hole at a mutually overlapping position as seen from the certain direction, the two or more heat transfer plates continuously lined up each have the through hole lined up in the certain direction to form a communicating space communicating with the plurality of first flow channels, the distributor has a tubular wall defining a hollow portion that extends in the
  • the plate heat exchanger is configured to allow the first fluid medium to be distributed to the one side and the other side in the certain direction (i.e., the direction in which the plurality of heat transfer plates are stacked on each other) before the first fluid medium that has been supplied to the hollow portion of the distributor from the outside of the heat exchanger body flows out through the plurality of outflow portions to reach the plurality of first flow channels. Accordingly, a difference in the distances of the circulating paths of the first fluid medium from the inlet of the hollow portion to the respective first flow channels can be suppressed as compared with the conventional plate heat exchanger (see Fig. 27 ) in which first flow channels arranged further away from the inlet of the first fluid medium result in longer circulating paths.
  • This configuration can suppress uneven distribution of the first fluid medium to the respective first flow channels (that is, uneven distribution of the first fluid medium to the plurality of first flow channels) that results from the difference in the distances (i.e., circulating resistances) of the circulating paths of the first fluid medium from the inlet of the heat exchanger body.
  • the configuration can be such that the distributing flow channel has: an opening portion communicating with the hollow portion; and a connecting flow channel extending along a peripheral direction of the tubular wall and connecting the opening portion and the distributing portion to each other.
  • the configuration can be such that the distributing portion includes a distributing portion inlet that communicates with the hollow portion and through which the first fluid medium flows into the distributing portion from the hollow portion, the distributor includes a direction changing member arranged at a position corresponding to the distributing portion inlet in the hollow portion of the tubular wall, and the direction changing member has an internal space that allows the hollow portion and the distributing portion inlet to communicate with each other and through which the first fluid medium can be circulated, and causes the first fluid medium to pass through the internal space to allow a flow direction of the first fluid medium to be directed along the thickness direction of the tubular wall at a position of the distributing portion inlet.
  • the direction changing member arranged immediately before the distributing portion inlet i.e., the position corresponding to the distributing portion inlet
  • the direction changing member arranged immediately before the distributing portion inlet allows the first fluid medium flowing along the thickness direction of the tubular wall to flow into the distributing portion (distributing portion inlet), that is, allows the first fluid medium having no (or a small) flow component of the certain direction to flow into the distributing portion (distributing portion inlet).
  • the configuration can be such that the heat exchanger body has, at a boundary position between the communicating space and each of the plurality of first flow channels, an opening portion through which the first fluid medium passes when flowing into the each of the plurality of first flow channels from the communicating space, and the opening portion causes differential pressure between the communicating space and the each of the plurality of first flow channels when the first fluid medium is circulated in the heat exchanger body.
  • the differential pressure is caused when the first fluid medium that has flown through one outflow portion flows into a plurality of first flow channels located at the corresponding position to the outflow portion, despite a difference in the distances between the one outflow portion and the respective opening portions located at the corresponding position. Accordingly, the first fluid medium accumulated in the communicating space passes through the respective opening portions under the same pressure to flow into the plurality of first flow channels Ra corresponding thereto.
  • the difference in the amounts of the first fluid medium flowing into the first flow channels can be suppressed even in the configuration that the number of the first flow channels is greater than the number of the outflow portions.
  • the uneven distribution of the first fluid medium into the plurality of first flow channels is suitably suppressed.
  • a distributor for a plate heat exchanger is configured such that in the plate heat exchanger including a heat exchanger body including a plurality of heat transfer plates each having a surface extending in a direction orthogonal to a certain direction, the plurality of heat transfer plates being stacked on each other in the certain direction to form a plurality of first flow channels through which a first fluid medium is circulated and at least one second flow channel through which a second fluid medium is circulated so as to be alternately arranged with the plurality of heat transfer plates respectively interposed therebetween, the distributor is arranged in a communicating space formed by through holes respectively of two or more heat transfer plates continuously lined up (arranged adjacent to each other) out of the plurality of heat transfer plates, the through holes line up in the certain direction, the communicating space communicating with the plurality of first flow channels, to allow the first fluid medium to be distributed to the plurality of first flow channels, the distributor includes a tubular wall defining a hollow portion that extends in the certain direction and through which the first fluid medium supplied from outside the plate heat exchanger
  • the distributor arranged in the communicating space of the plate heat exchanger allows the first fluid medium to be distributed to the one side and the other side in the certain direction (i.e., the direction in which the plurality of heat transfer plates are stacked on each other) by the distributing portion of the distributing flow channel before the first fluid medium that has been supplied to the hollow portion of the distributor from the outside of the heat exchanger body flows out through the plurality of outflow portions to reach the plurality of first flow channels. Accordingly, a difference in the distances of the circulating paths of the first fluid medium from the inlet of the hollow portion to the respective first flow channels can be suppressed as compared with the conventional plate heat exchanger (see Fig.
  • first flow channels arranged further away from the inlet of the first fluid medium result in longer circulating paths.
  • This configuration can suppress uneven distribution of the first fluid medium to the first flow channels (that is, uneven distribution of the first fluid medium to the plurality of first flow channels) that results from the difference in the distances (i.e., circulating resistances) of the circulating paths of the first fluid medium from the inlet of the heat exchanger body.

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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)

Claims (5)

  1. Échangeur de chaleur à plaques comprenant :
    un corps d'échangeur de chaleur (2) comprenant une pluralité de plaques de transfert de chaleur (21) ayant chacune une surface s'étendant dans une direction orthogonale à une certaine direction, la pluralité de plaques de transfert de chaleur étant empilées les unes sur les autres dans la certaine direction pour former une pluralité de premiers canaux d'écoulement à travers lesquels un premier milieu fluide circule et au moins un second canal d'écoulement à travers lequel un second milieu fluide circule de manière à être disposés de manière alternée avec la pluralité de plaques de transfert de chaleur interposées respectivement entre eux ; et
    un distributeur (5) pour permettre au premier milieu fluide d'être distribué dans la pluralité de premiers canaux d'écoulement, dans lequel
    deux plaques de transfert de chaleur ou plus alignées de façon continue parmi la pluralité de plaques de transfert de chaleur comportent chacune un trou traversant au niveau d'une position de chevauchement mutuel, vue depuis la certaine direction,
    les deux plaques de transfert de chaleur ou plus alignées de façon continue ont chacune le trou traversant aligné dans la certaine direction pour former un espace de communication communiquant avec la pluralité de premiers canaux d'écoulement,
    le distributeur (5) possède une paroi tubulaire définissant une partie creuse qui s'étend dans la certaine direction dans l'espace de communication et à travers laquelle circule le premier milieu fluide fourni depuis l'extérieur du corps d'échangeur de chaleur, l'échangeur de chaleur à plaques étant caractérisé en ce que le la paroi tubulaire comprend une pluralité de parties tubulaires (50) superposées les unes sur les autres dans la direction de l'épaisseur de la paroi tubulaire, la paroi tubulaire possède un canal d'écoulement de distribution (6) à travers lequel le premier milieu fluide peut circuler dans deux parties tubulaires ou plus superposées de façon continue dans la direction de l'épaisseur parmi la pluralité de parties tubulaires,
    le canal d'écoulement de distribution comprend :
    une partie de distribution (603) pour permettre au premier milieu fluide qui s'est écoulé dans le canal d'écoulement de distribution à travers la partie creuse d'être distribué à un côté et à un autre côté dans la certaine direction, la partie de distribution comprenant une sortie de partie de distribution à un côté à travers laquelle le premier milieu fluide s'écoule vers l'un côté et une sortie de partie de distribution à un autre côté à travers laquelle le premier milieu fluide s'écoule vers l'autre côté ; et
    une pluralité de parties de sortie (616), chacune communiquant directement ou indirectement avec la sortie de partie de distribution à un côté ou avec la sortie de partie de distribution à un autre côté et pénétrant à travers au moins une partie tubulaire la plus extérieure dans la direction de l'épaisseur pour communiquer avec l'espace de communication ou la pluralité de premiers canaux d'écoulement, et
    la pluralité de parties de sortie (616) sont disposées à des intervalles les unes des autres la certaine direction.
  2. Échangeur de chaleur à plaques selon la revendication 1, dans lequel le canal d'écoulement de distribution comporte : une partie d'ouverture communiquant avec la partie creuse ; et un canal d'écoulement de liaison s'étendant le long d'une direction périphérique de la paroi tubulaire et reliant la partie d'ouverture et la partie de distribution l'une à l'autre.
  3. Échangeur de chaleur à plaques selon la revendication 1, dans lequel
    la partie de distribution comprend une entrée de partie de distribution qui communique avec la partie creuse et à travers laquelle le premier milieu fluide s'écoule dans la partie de distribution à partir de la partie creuse,
    le distributeur comprend un élément de changement de direction disposé au niveau d'une position correspondant à l'entrée de partie de distribution dans la partie creuse de la paroi tubulaire, et
    l'élément de changement de direction possède un espace interne qui permet à la partie creuse et à l'entrée de partie de distribution de communiquer l'une avec l'autre et à travers lequel le premier milieu fluide peut circuler, et amène le premier milieu fluide à passer à travers l'espace interne pour permettre une direction d'écoulement du premier milieu fluide d'être dirigée le long de la direction de l'épaisseur de la paroi tubulaire au niveau d'une position de l'entrée de partie de distribution.
  4. Échangeur de chaleur à plaques selon l'une quelconque des revendications 1 à 3, dans lequel
    le corps d'échangeur de chaleur possède, au niveau d'une position limite entre l'espace de communication et chacun de la pluralité de premiers canaux d'écoulement, une partie d'ouverture à travers laquelle passe le premier milieu fluide lorsqu'il s'écoule dans chacun de la pluralité de premiers canaux d'écoulement à partir de l'espace de communication, et
    la partie d'ouverture provoque une pression différentielle entre l'espace de communication et chacun de la pluralité de premiers canaux d'écoulement lorsque le premier milieu fluide circule dans le corps d'échangeur de chaleur.
  5. Distributeur (5) pour un échangeur de chaleur à plaques, l'échangeur de chaleur à plaques comprenant un corps d'échangeur de chaleur (2) comprenant une pluralité de plaques de transfert de chaleur (21) ayant chacune une surface s'étendant dans une direction orthogonale à une certaine direction, la pluralité de plaques de transfert de chaleur étant empilées les unes sur les autres dans la certaine direction pour former une pluralité de premiers canaux d'écoulement à travers lesquels un premier milieu fluide circule et au moins un second canal d'écoulement à travers lequel un second milieu fluide circule de manière à être disposés de manière alternée avec la pluralité de plaques de transfert de chaleur interposées respectivement entre eux, dans lequel le distributeur est disposé dans un espace de communication formé par des trous traversants respectivement de deux plaques de transfert de chaleur ou plus alignées de façon continue parmi la pluralité de plaques de transfert de chaleur, les trous traversants étant alignés dans la certaine direction, l'espace de communication communiquant avec la pluralité de premiers canaux d'écoulement, pour permettre au premier milieu fluide d'être distribué à la pluralité de premiers canaux d'écoulement,
    le distributeur (5) comprenant une paroi tubulaire définissant une partie creuse qui s'étend dans la certaine direction et à travers laquelle circule le premier milieu fluide fourni depuis l'extérieur de l'échangeur de chaleur à plaques lorsque le distributeur est disposé dans l'espace de communication, le distributeur étant caractérisé en ce que la paroi tubulaire comprend une pluralité de parties tubulaires (50) superposées les unes sur les autres dans la direction de l'épaisseur de la paroi tubulaire, et possède un canal d'écoulement de distribution à travers lequel le premier milieu fluide peut circuler dans deux parties tubulaires ou plus superposées de façon continue dans la direction de l'épaisseur parmi la pluralité de parties tubulaires,
    le canal d'écoulement de distribution (6) comprend :
    une partie de distribution (603) pour permettre au premier milieu fluide qui s'est écoulé dans le canal d'écoulement de distribution à travers la partie creuse d'être distribué à un côté et à un autre côté dans la certaine direction, la partie de distribution comprenant une sortie de partie de distribution à un côté à travers laquelle le premier milieu fluide s'écoule vers l'un côté et une sortie de partie de distribution à un autre côté à travers laquelle le premier milieu fluide s'écoule vers l'autre côté ; et
    une pluralité de parties de sortie (616), chacune communiquant directement ou indirectement avec la sortie de partie de distribution à un côté ou avec la sortie de partie de distribution à un autre côté et pénétrant à travers au moins une partie tubulaire la plus extérieure dans la direction de l'épaisseur pour pouvoir communiquer avec l'espace de communication ou la pluralité de premiers canaux d'écoulement, et
    la pluralité de parties de sortie (616) sont disposées à des intervalles les unes des autres dans la certaine direction.
EP20818340.0A 2019-06-05 2020-06-01 Échangeur de chaleur à plaques et distributeur pour échangeur de chaleur à plaques Active EP3978856B1 (fr)

Applications Claiming Priority (2)

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JP2019105205 2019-06-05
PCT/JP2020/021530 WO2020246412A1 (fr) 2019-06-05 2020-06-01 Échangeur de chaleur à plaques et distributeur pour échangeur de chaleur à plaques

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EP3978856A4 EP3978856A4 (fr) 2023-06-14
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JP (1) JP7122469B2 (fr)
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CN113091501A (zh) * 2021-04-07 2021-07-09 广州番禺新速能板式热交换器有限公司 一种高效分配器及板式换热器

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Publication number Publication date
JP7122469B2 (ja) 2022-08-19
CN113924454B (zh) 2023-11-07
WO2020246412A1 (fr) 2020-12-10
EP3978856A1 (fr) 2022-04-06
CN113924454A (zh) 2022-01-11
JPWO2020246412A1 (ja) 2021-11-25
EP3978856A4 (fr) 2023-06-14

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