WO2021157514A1 - Échangeur thermique à plaques - Google Patents

Échangeur thermique à plaques Download PDF

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Publication number
WO2021157514A1
WO2021157514A1 PCT/JP2021/003494 JP2021003494W WO2021157514A1 WO 2021157514 A1 WO2021157514 A1 WO 2021157514A1 JP 2021003494 W JP2021003494 W JP 2021003494W WO 2021157514 A1 WO2021157514 A1 WO 2021157514A1
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WO
WIPO (PCT)
Prior art keywords
heat transfer
flow path
surface side
ridges
axis direction
Prior art date
Application number
PCT/JP2021/003494
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English (en)
Japanese (ja)
Inventor
要 山口
智浩 四方
Original Assignee
株式会社日阪製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社日阪製作所 filed Critical 株式会社日阪製作所
Priority to EP21751027.0A priority Critical patent/EP4098965A4/fr
Priority to CN202180011114.4A priority patent/CN115003979A/zh
Publication of WO2021157514A1 publication Critical patent/WO2021157514A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • 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
    • 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
    • F28F3/044—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 pontual, e.g. dimples
    • 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

Definitions

  • the present invention relates to a plate heat exchanger in which a plurality of heat transfer plates are stacked.
  • a plate-type heat exchanger 500 in which a plurality of heat transfer plates 501 are stacked is known (see Patent Document 1).
  • the concave portion on one surface and the convex portion on the other surface have a front-back relationship
  • the convex portion on one surface and the concave portion on the other surface have a front-back relationship
  • concave portions and convex portions of the same size that are alternately repeated are arranged on both sides.
  • the first fluid flows through the first flow path Ra and the second fluid flows through the second flow path Rb, so that the first flow path Ra and the second flow path Rb are separated from each other.
  • the first fluid and the second fluid exchange heat through the heat plate 501.
  • the first fluid when, for example, a fluid whose layer changes due to heat exchange (a fluid having different characteristics from the second fluid) is used as one fluid (first fluid), the first fluid is the second.
  • a liquid film is formed on the surface of the heat transfer plate 501 that defines the first flow path. Therefore, in order to obtain sufficient heat exchange performance, the flow velocity of the first fluid in the first flow path Ra is made larger than the flow velocity of the second fluid in the second flow path Rb so that the flow rate of the liquid film is increased. Need to be disturbed.
  • an object of the present invention is to provide a plate-type heat exchanger that can obtain sufficient heat exchange performance even when heat exchange between a first fluid and a second fluid having different characteristics.
  • the plate heat exchanger of the present invention Two transmissions that have a first surface and a second surface opposite to the first surface, and are superposed so that the first surfaces face each other in the first direction orthogonal to the first surface. Equipped with multiple heat transfer plate pairs composed of heat plates In a state where the plurality of heat transfer plate pairs are superposed so that the second surfaces face each other in the first direction, the first fluid is orthogonal to the first direction between the first surfaces facing each other. A first flow path that can flow in two directions is formed, and a second flow path that allows the second fluid to flow in the second direction is formed between the two opposing surfaces.
  • the first surface has at least one first surface side ridge extending along the second direction and at least one first surface side recess extending along the second direction.
  • the second surface has at least one second surface side recess having a front and back relationship with the first surface side convex groove on the first surface, and a front and back relationship between the first surface side recess on the first surface.
  • Has at least one second side ridge in each heat transfer plate pair the third direction in which the first surface side convex and the first surface side concave are orthogonal to each of the first direction and the second direction on each of the facing first surfaces.
  • a plurality of ridge pairs composed of the ridges on the first surface side facing each other are lined up in the third direction.
  • the plurality of ridge pairs arranged in the third direction has at least one first ridge pair and at least one second ridge pair.
  • the facing first surface side ridges face each other with a gap in the first direction.
  • the facing first surface side ridges are in contact with each other.
  • At least one of the first surface side ridges constituting the first ridge pair has at least one groove portion that crosses the first surface side ridge in the third direction at an intermediate position in the second direction. You may.
  • Each of the plurality of second surface side ridges on one of the two opposing second surfaces and the plurality of second surface side ridges on the other second surface of the opposite second surfaces may be arranged at a position deviated from each other in the third direction so as not to come into contact with each other.
  • the second surface side convex of the one second surface faces the second surface side concave of the other second surface, and the second surface side concave of the one second surface faces the other. It may face the second surface side ridge on the second surface of the above.
  • At least one second surface of the opposing second surfaces has at least one barrier ridge extending in a direction intersecting the second direction.
  • the barrier ridges may come into contact with the plurality of second side ridges on the other side of the second surface.
  • the at least one barrier ridge is arranged on each of the opposing second surfaces.
  • the at least one barrier ridge on the second surface of one of the two opposing surfaces and the at least one barrier ridge on the other second surface of the facing second surface May be arranged at different positions in the second direction.
  • the positions of the top of the barrier ridge and the top of each second surface side ridge may be the same in the first direction.
  • FIG. 1 is a perspective view of a plate heat exchanger according to the present embodiment.
  • FIG. 2 is an exploded perspective view of the plate type heat exchanger.
  • FIG. 3 is a view of the first heat transfer plate included in the plate heat exchanger as viewed from the front surface side.
  • FIG. 4 is a view of the first heat transfer plate viewed from the second surface side.
  • FIG. 5 is a view of the second heat transfer plate included in the plate heat exchanger as viewed from the front surface side.
  • FIG. 6 is a view of the second heat transfer plate viewed from the second surface side.
  • FIG. 7 is an enlarged view of the enclosed portion shown by VII in FIG.
  • FIG. 8 is an enlarged view of the enclosed portion shown by VIII in FIG.
  • FIG. 7 is an enlarged view of the enclosed portion shown by VII in FIG.
  • FIG. 8 is an enlarged view of the enclosed portion shown by VIII in FIG.
  • FIG. 7 is an enlarged view of the enclosed portion shown by VII in FIG.
  • FIG. 8 is
  • FIG. 9 is a cross-sectional view taken at the IX-IX position in FIG.
  • FIG. 10 is an enlarged view of the enclosed portion indicated by X in FIG.
  • FIG. 11 is an enlarged view of the enclosed portion indicated by XI in FIG.
  • FIG. 12 is a cross-sectional view taken along the line XII-XII in FIG.
  • FIG. 13 is a partially enlarged view of a cross section of a state in which a plurality of heat transfer plates are superposed.
  • FIG. 14 is a cross-sectional view taken along the line XIV-XIV in FIG.
  • FIG. 15 is a schematic view for explaining the flow path configuration of the plate heat exchanger.
  • FIG. 16 is a diagram showing the flow of the first fluid in the first flow path.
  • FIG. 17 is a diagram showing the flow of the second fluid in the second flow path.
  • FIG. 18 is a partially enlarged view of a main heat transfer portion in the heat transfer plate according to another embodiment.
  • FIG. 19 is a cross-sectional view taken along the line XIX-XIX in FIG.
  • FIG. 20 is a vertical cross-sectional view of a conventional plate heat exchanger.
  • the plate heat exchanger of this embodiment is Two transmissions that have a first surface and a second surface opposite to the first surface, and are superposed so that the first surfaces face each other in the first direction orthogonal to the first surface.
  • a plurality of heat transfer plate pairs having heat plates
  • the first fluid is orthogonal to the first direction between the first surfaces facing each other.
  • a first flow path that can flow in two directions is formed, and a second flow path that allows the second fluid to flow in the second direction is formed between the two opposing surfaces.
  • the first surface has at least one first surface side ridge extending along the second direction and at least one first surface side recess extending along the second direction.
  • the second surface has at least one second surface side recess having a front and back relationship with the first surface side convex groove on the first surface, and a front and back relationship between the first surface side recess on the first surface.
  • Has at least one second side ridge in each heat transfer plate pair the third direction in which the first surface side convex and the first surface side concave are orthogonal to each of the first direction and the second direction on each of the facing first surfaces.
  • a plurality of ridge pairs composed of the ridges on the first surface side facing each other are lined up in the third direction.
  • the plurality of ridge pairs arranged in the third direction has at least one first ridge pair and at least one second ridge pair.
  • the facing first surface side ridges face each other with a gap in the first direction.
  • the facing first surface side ridges are in contact with each other.
  • the first surface side ridges face each other with a gap, so that the first flow path is formed as compared with the case where the first surface side ridges facing each other at the position are in contact with each other. Since the distance between the specified heat transfer plates (first surface) in the first direction is increased, the cross-sectional area of the first flow path is increased, and the position corresponding to the first ridge pair (that is, the same in the third direction) is increased. Since the distance in the first direction of the heat transfer plate (second surface) that defines the second flow path at the position) becomes smaller, the flow path cross-sectional area of the second flow path becomes smaller.
  • the first surface side ridges constituting the first ridge pair may have at least one groove portion that crosses the first surface side ridges in the third direction at an intermediate position in the second direction. good.
  • the strength of the portion is improved.
  • Each of the plurality of second surface side ridges on one of the two opposing second surfaces and the plurality of second surface side ridges on the other second surface of the opposite second surfaces may be arranged at a position deviated from each other in the third direction so as not to come into contact with each other.
  • the ridges on the opposite second surface side are displaced from each other in the third direction so as not to contact each other, so that the second flow formed between the opposing second surfaces.
  • the second fluid flows in the second direction along the path, the second fluid can also move in the third direction.
  • the bias in the third direction in the flow (flow rate) of the second fluid is suppressed, and as a result, the deterioration of the heat exchange performance due to the bias can be prevented.
  • the second surface side convex of the one second surface faces the second surface side concave of the other second surface, and the second surface side concave of the one second surface faces the other. It may face the second surface side ridge on the second surface of the above.
  • the second flow path extends in the third direction so as to meander when viewed from the second direction (see FIG. 13).
  • the distance between the second surfaces facing each other (specifically, the distance in the first direction) becomes constant or substantially constant, so that the bias in the third direction in the flow of the second fluid becomes constant. It can be suppressed more. As a result, it is possible to more reliably prevent the deterioration of the heat exchange performance due to the bias.
  • At least one second surface of the opposing second surfaces has at least one barrier ridge extending in a direction intersecting the second direction.
  • the barrier ridges may come into contact with the plurality of second side ridges on the other side of the second surface.
  • the at least one barrier ridge is arranged on each of the opposing second surfaces.
  • the at least one barrier ridge on the second surface of one of the two opposing surfaces and the at least one barrier ridge on the other second surface of the facing second surface May be arranged at different positions in the second direction.
  • the flow path width (dimension in the first direction) of the second flow path at this position becomes smaller or disappears, and the second The flow resistance of the flow path becomes too large.
  • the flow path width at each position is secured because the positions of the barrier ridges on one second surface and the barrier ridges on the other second surface are different in the second direction. Therefore, it is possible to prevent the flow resistance of the second flow path from becoming too large.
  • the second fluid collides with each of the barrier ridges provided on one of the second surfaces and the other second surface, thereby causing sufficient turbulence in the flow of the second fluid in the second flow path. Can be caused.
  • the positions of the top of the barrier ridge and the top of each second surface side ridge may be the same in the first direction.
  • the plate heat exchanger according to the present embodiment (hereinafter, also simply referred to as “heat exchanger”) has a plurality of heat transfer plates 2, 3 which are superposed in a predetermined direction.
  • the heat exchanger 1 includes a pair of frame plates (end plates) 4 that sandwich the plurality of heat transfer plates 2 and 3 from the outside in the predetermined direction.
  • Flow paths Ra and Rb through which fluids A and B can flow are formed between the heat transfer plates 2 and 3 in the plurality of heat transfer plates 2 and 3.
  • the specific configuration is as follows.
  • the heat exchanger 1 of the present embodiment includes three or more rectangular heat transfer plates 2 and 3, and these three or more heat transfer plates 2 and 3 include two types of heat transfer plates.
  • one of the two types of heat transfer plates 2 and 3 is also referred to as the first heat transfer plate 2, and the other heat transfer plate of the two types of heat transfer plates 2 and 3 is referred to as the first heat transfer plate 2.
  • the second heat transfer plate 3 is also referred to as the second heat transfer plate 3.
  • the direction in which the heat transfer plates 2 and 3 are overlapped is the X-axis direction (first direction) of the Cartesian coordinate system
  • the short side direction of the heat transfer plates 2 and 3 is the Y-axis of the Cartesian coordinate system.
  • the direction is defined as the direction (third direction), and the long side direction of the heat transfer plates 2 and 3 is defined as the Z-axis direction (second direction) of the Cartesian coordinate system.
  • first heat transfer plate 2 and the second heat transfer plate 3 have a common configuration. Therefore, in the following, first, the common configuration of the first heat transfer plate 2 and the second heat transfer plate 3 will be described.
  • the heat transfer plates 2 and 3 are heat transfer portions having first surfaces Sa1 and Sb1 and second surfaces Sa2 and Sb2 opposite to the first surfaces Sa1 and Sb1. 20 and 30 and annular fitting portions 21 and 31 extending from the entire outer peripheral edge of the heat transfer portions 20 and 30 in a direction intersecting the heat transfer portions 20 and 30.
  • the heat transfer plates 2 and 3 of the present embodiment are formed by press-molding a metal plate (thin plate).
  • the heat transfer portions 20 and 30 spread in a direction orthogonal to the X-axis direction and have a thickness in the X-axis direction. Therefore, the first surfaces Sa1 and Sb1 and the second surfaces Sa2 and Sb2 of the heat transfer portions 20 and 30 of the plurality of heat transfer plates 2 and 3 superposed in the X-axis direction are arranged in the X-axis direction.
  • the heat transfer portions 20 and 30 of the present embodiment have a long rectangular shape in the Z-axis direction when viewed from the X-axis direction (see FIGS. 3 to 6).
  • the heat transfer portions 20 and 30 have concave portions 22 and 32 and convex portions 23 and 33.
  • the heat transfer portions 20 and 30 of the present embodiment have a plurality of concave portions 22 and 32 and a plurality of convex portions 23 and 33 on the first surfaces Sa1 and Sb1 and the second surfaces Sa2 and Sb2, respectively.
  • the heat transfer plates 2 and 3 of the present embodiment are formed by press-molding a metal plate as described above. Therefore, the concave portions 22 and 32 of the first surfaces Sa1 and Sb1 of the heat transfer portions 20 and 30 and the convex portions 23 and 33 of the second surfaces Sa2 and Sb2 of the heat transfer portions 20 and 30 are in a front-to-back relationship. .. Further, the convex portions 23 and 33 of the first surfaces Sa1 and Sb1 of the heat transfer portions 20 and 30 and the concave portions 22 and 32 of the second surfaces Sa2 and Sb2 of the heat transfer portions 20 and 30 are in a front-to-back relationship.
  • the portions forming the concave portions 22 and 32 on the first surfaces Sa1 and Sb1 form the convex portions 23 and 33 on the second surfaces Sa2 and Sb2, and the convex portions 23 and 33 are formed on the first surfaces Sa1 and Sb1.
  • the portions forming the portions 23 and 33 form the recesses 22 and 32 with the second surfaces Sa2 and Sb2.
  • the heat transfer portions 20 and 30 have an opening peripheral edge having main heat transfer portions 25 and 35 arranged in the center in the Z-axis direction and openings 200, 201, 202, 203, 300, 301, 302 and 303. It is arranged between the main heat transfer portions 25, 35 and the opening peripheral portion 200p, 201p, 202p, 203p, 300p, 301p, 302p, 303p. It has a weir portion 26, 36 and the like.
  • the heat transfer portions 20 and 30 of the present embodiment have at least two openings 200, 201, 202, 203, 300, 301, 302 and 303 at one end and the other end in the Z-axis direction, respectively. More specifically, the heat transfer portions 20 and 30 have two openings 200, 203, 300 and 303 at one end in the Z-axis direction and two openings 201, 202 and 301 at the other end in the Z-axis direction. , 302.
  • the two openings 200, 203, 300, and 303 at one end of the heat transfer portions 20 and 30 are arranged at intervals in the Y-axis direction. Further, the two openings 201, 202, 301 and 302 at the other ends of the heat transfer portions 20 and 30 are arranged at intervals in the Y-axis direction.
  • the first surface is dented when viewed from the Sa1 and Sb1 sides.
  • the opening peripheral edges 200p, 201p, 300p, and 301p are bulging when viewed from the second surface Sa2 and Sb2 side.
  • the amount of displacement (position in the X-axis direction) of each of the opening peripheral edges 200p, 201p, 300p, and 301p that bulges when viewed from the second surface Sa2 and Sb2 side is the heat transfer plates 2 and 3 adjacent to each other. It is set to come into contact with the opening peripheral portions 200p, 201p, 300p, and 301p.
  • 202p and 302p are bulging when viewed from the front surface Sa1 and Sb1 sides.
  • the opening peripheral edges 202p, 203p, 302p, and 303p are recessed when viewed from the second surface Sa2, Sb2 side.
  • the amount of displacement (position in the X-axis direction) of each of the opening peripheral edges 202p, 203p, 302p, 303p that bulges when viewed from the first surface Sa1 and Sb1 side is the heat transfer plates 2 and 3 adjacent to each other. It is set to abut the opening peripheral edges 202p, 203p, 302p, and 303p.
  • the recessed opening peripheral edges 200p, 201p, 202p, 203p, 300p, 301p. , 302p, 303p, and the bottom (most recessed part) of the recessed portions (first surface side recesses 225, 325 and second surface side recesses 226, 326 described later) in the weir portions 26, 36. is doing.
  • one opening 200, 300 at one end in the Z-axis direction and one opening 201, 301 at the other end in the Z-axis direction are diagonally positioned.
  • the other openings 203 and 303 at one end in the Z-axis direction and the other openings 202 and 302 at the other end in the Z-axis direction are at diagonal positions.
  • the main heat transfer portions 25 and 35 are rectangular portions when viewed from the X-axis direction. As shown in FIGS. 3, 5, 7, 9, 10, and 12, at least one of the main heat transfer portions 25 and 35 extends along the Z-axis direction on the first surfaces Sa1 and Sb1.
  • At least one barrier backside recess 223, 323 extending in a direction intersecting the Z-axis direction.
  • the main heat transfer portions 25, 35 of the present embodiment include a plurality of first flow path forming recesses 221 and 321 and a plurality of first flow path forming protrusions 231 and 331 on the first surfaces Sa1 and Sb1. It has recesses 223 and 323 on the back side of the barrier.
  • the plurality of first flow path forming recesses 221 and 321 and the plurality of barrier backside recesses 223 and 323 are included in the plurality of recesses 22 and 32 of the heat transfer portions 20 and 30 described above.
  • the plurality of protrusions 231 and 331 for forming the first flow path are included in the plurality of protrusions 23 and 33 of the heat transfer portions 20 and 30 described above.
  • the bottoms (most recesses) of the recessed first flow path forming recesses 221 and 321 and the barrier backside recesses 223 and 323 are recessed. Dots are attached to the part).
  • Each of the plurality of barrier backside recesses 223 and 323 continuously extends from one end to the other end in the Y-axis direction of the main heat transfer portions 25 and 35.
  • Each of the plurality of barrier backside recesses 223 and 323 of the present embodiment extends straight in the Y-axis direction.
  • These plurality of barrier backside recesses 223 and 323 are arranged at intervals in the Z-axis direction.
  • the plurality of barrier backside recesses 223 and 323 of the present embodiment are evenly spaced in the Z-axis direction, except for the barrier backside recesses 223A and 323A arranged at one end in the Z-axis direction (upper end in FIGS. 3 and 5). Have been placed.
  • the distance between the barrier backside recesses 223A and 323A arranged at one end of the barrier backside recesses 223A and 323A and one ends of the main heat transfer portions 25 and 35 adjacent to each other in the Z-axis direction is the Z axis at another position.
  • the distance between the dents 223 and 323 on the back side of the barrier adjacent to each other in the direction is half or approximately half.
  • the plurality of barrier backside recesses 223 and 323 arranged in this way have a plurality of regions (first surface side divided regions) in which the main heat transfer portions 25 and 35 are arranged in the Z-axis direction on the first surface Sa1 and Sb1 sides. ) Divide into D1.
  • the barrier back side recesses 223 and 323 of the present embodiment are, for example, six, and the main heat transfer portions 25 and 35 are divided into seven first surface side division regions D1.
  • a plurality of first flow path forming recesses 221 and 321 are arranged so as to extend in the Z-axis direction and at intervals in the Y-axis direction, respectively. Further, in each of the plurality of first surface side divided regions D1, the plurality of first flow path forming protrusions 231 and 331 are Z between the first flow path forming recesses 221 and 321 adjacent to each other in the Y-axis direction. It extends in the axial direction. That is, in each of the first surface side divided regions D1, the first flow path forming recesses 221 and 321 and the first flow path forming protrusions 231 and 331 are alternately arranged in the Y-axis direction.
  • Each of the plurality of first flow path forming recesses 221 and 321 and the plurality of first flow path forming protrusions 231 and 331 extend from one end to the other end in the Z-axis direction in the first surface side division region D1. There is. Therefore, the ends of the barrier backside recesses 223 and 323 in the first flow path forming recesses 221 and 321 are connected to the barrier backside recesses 223 and 323.
  • the depths of the first flow path forming recesses 221 and 321 and the depths of the barrier backside recesses 223 and 323 are the same. That is, the positions of the bottoms of the first flow path forming recesses 221 and 321 in the X-axis direction and the positions of the bottoms of the barrier backside recesses 223 and 323 in the X-axis direction are the same.
  • the center position of the first flow path forming recesses 221 and 321 in the Y-axis direction and the center position of the first flow path forming protrusions 231 and 331 in the Y-axis direction are alternately arranged in the Y-axis direction so that the two are at equal intervals (same pitch) (FIG. 7, FIG. 9), 10 and 12).
  • the first flow path forming ridges 221 and 321 arranged alternately and the first flow path forming ridges 231 and 331 are located in the center of the uneven group formed by the first flow path forming ridges 231 and 331 in the Y-axis direction.
  • the center position of 231 and 331 in the Y-axis direction is shifted by 1/2 pitch in the Y-axis direction with respect to the vertical center line CL extending in the Z-axis direction at the center position of the heat transfer portions 20 and 30 in the Y-axis direction.
  • the uneven group is arranged (see FIGS. 3 and 5).
  • the 1 pitch is the distance between the central positions of the adjacent first flow path forming recesses 221 and 321 and the first flow path forming protrusions 231 and 331 (reference numerals P in FIGS. 9 and 12). reference).
  • the plurality of first flow path forming protrusions 231 and 331 arranged in each first surface side dividing region D1 have two types of first flow path forming protrusions having different positions (heights) of the tops in the X-axis direction. Including articles.
  • the plurality of first flow path forming ridges 231 and 331 arranged in each first surface side divided region D1 are the first first flow path forming ridges (hereinafter, "first ridges"). 231A, 331A, and a second first flow path forming ridge (hereinafter referred to as "second ridge") 231B, 331B, which is higher than the first ridge 231A and 331A.
  • each first surface side division region D1 the second ridges 231B and 331B are arranged every other one with respect to the first ridges 231A and 331A. That is, one first ridge 231A and one 331A are arranged between the second ridges 231B and 331B adjacent to each other in the Y-axis direction.
  • each first surface side divided region D1 is the same. Therefore, the first protrusions 231A and 331A of each first surface side division region D1 are arranged straight in the Z-axis direction (that is, they are arranged on the same straight line). Further, the second ridges 231B and 331B of each first surface side division region D1 are arranged straight in the Z-axis direction. Further, the recesses 221 and 321 for forming the first flow path of the first surface side division region D1 are lined up straight in the Z-axis direction.
  • the main heat transfer portions 25 and 35 have the first surfaces Sa1 and Sb1 on the second surfaces Sa2 and Sb2.
  • the second flow path forming recesses (second surface side recesses) 222 and 322 formed on the back side of the first flow path forming protrusions 231 and 331, and the first flow path forming recesses on the first surfaces Sa1 and Sb1. It has a second flow path forming ridge (second surface side ridge) 232, 332, which is formed on the back side of the strips 221 and 321.
  • the main heat transfer portions 25 and 35 have barrier ridges 233 and 333 formed on the back side of the barrier back side recesses 223 and 323 of the first surfaces Sa1 and Sb1 on the second surfaces Sa2 and Sb2. That is, the main heat transfer portions 25 and 35 have at least one second flow path forming recess 222 and 222 extending along the Z-axis direction and at least one extending along the Z-axis direction on the second surfaces Sa2 and Sb2. It has one second flow path forming ridge 232, 332 and. Further, the main heat transfer portions 25 and 35 have at least one barrier ridge 233,333 extending in a direction intersecting the Z-axis direction on the second surfaces Sa2 and Sb2.
  • the main heat transfer portions 25 and 35 of the present embodiment have a plurality of recesses 222 and 322 for forming the second flow path and a plurality of protrusions 232 and 332 for forming the second flow path on the second surfaces Sa2 and Sb2. , With a plurality of barrier ridges 233,333.
  • the plurality of recesses 222 and 222 for forming the second flow path are included in the plurality of recesses 22 and 32 of the heat transfer portions 20 and 30 described above.
  • the plurality of ridges 232 and 332 for forming the second flow path and the plurality of ridges 233 and 333 for barriers are included in the plurality of protrusions 23 and 33 of the heat transfer portions 20 and 30 described above.
  • dots are added to the recessed recesses 222 and 222 for forming the second flow path in order to clarify the unevenness relationship on the first surfaces Sa1 and Sb1.
  • Each of the plurality of barrier ridges 233 and 333 continuously extends from one end to the other end in the Y-axis direction of the main heat transfer portions 25 and 35.
  • Each of the plurality of barrier ridges 233,333 of the present embodiment extends straight in the Y-axis direction.
  • These plurality of barrier ridges 233, 333 are arranged at intervals in the Z-axis direction.
  • the plurality of barrier ridges 233, 333 of the present embodiment are evenly spaced in the Z-axis direction, except for the barrier ridges 233A and 333A arranged at one end (upper end in FIGS. 4 and 6) in the Z-axis direction. Have been placed.
  • the distance between the barrier ridges 233A and 333A arranged at one end and one ends of the main heat transfer portions 25 and 35 adjacent to the barrier ridges 233A and 333A in the Z-axis direction is at another position.
  • the distance between the barrier ridges 233 and 333 adjacent to each other in the Z-axis direction is half or approximately half.
  • the plurality of barrier ridges 233, 333 arranged in this way have a plurality of regions (second surface side divided regions) in which the main heat transfer portions 25 and 35 are arranged in the Z-axis direction on the second surface Sa2 and Sb2 sides. ) Divide into D2.
  • Six barrier ridges 233 and 333 of the present embodiment are arranged, for example, and the main heat transfer portions 25 and 35 are divided into seven second surface side division regions D2.
  • Each second surface side division region D2 of the present embodiment is formed on the back side of the corresponding first surface side division region D1 in the plurality of first surface side division regions D1 of the first surface Sa1 and Sb1.
  • a plurality of second flow path forming recesses 222 and 322 are arranged so as to extend in the Z-axis direction and at intervals in the Y-axis direction, respectively. Further, in each of the plurality of second surface side divided regions D2, the plurality of second flow path forming protrusions 232 and 332 are located between the second flow path forming recesses 222 and 322 adjacent to each other in the Y-axis direction. Extends in the Z-axis direction. That is, in each of the second surface side divided regions D2, the recesses 222 and 322 for forming the second flow path and the protrusions 232 and 332 for forming the second flow path are alternately arranged in the Y-axis direction.
  • Each of the plurality of recesses 222 and 322 for forming the second flow path and the plurality of protrusions 232 and 332 for forming the second flow path are from one end to the other end in the Z-axis direction in the second surface side division region D2. It is extending. Therefore, the ends of the ridges 232 and 332 for forming the second flow path on the side of the ridges 233 and 333 for the barrier are connected to the ridges 233 and 333 for the barrier.
  • the heights of the ridges 232 and 332 for forming the second flow path and the heights of the ridges 233 and 333 for the barrier are the same. That is, the positions of the tops of the second flow path forming ridges 232 and 332 in the X-axis direction and the positions of the tops of the barrier ridges 233 and 333 in the X-axis direction are the same.
  • the central position of the second flow path forming recess 222 and 322 in the Y-axis direction and the second flow path forming protrusion 232 and 332 in the Y-axis direction are alternately arranged in the Y-axis direction so that the central positions are at equal intervals (same pitch). (See FIGS. 8, 9, 11, and 12).
  • the concavo-convex group is arranged so that the center position of the recesses 222 and 222 in the Y-axis direction is deviated by 1/2 pitch in the Y-axis direction with respect to the vertical center lines CL of the heat transfer portions 20 and 30 (FIG. 4 and FIG. 6).
  • the one pitch is the distance between the central positions of the adjacent second flow path forming recesses 222 and 322 and the second flow path forming protrusions 232 and 332 (FIGS. 9 and 12). See symbol P).
  • each second surface side division region D2 form two types of second flow paths having different positions (depths) in the X-axis direction of the bottom portion.
  • first recess for forming the second flow path
  • second recess includes a second flow path forming recess (hereinafter referred to as "second recess") 222B and 222B.
  • the first dents 222A and 322A are formed on the back side of the first ridges 231A and 331A of the first surfaces Sa1 and Sb1, and the second ridges 222B and 322B are the second ridges of the first surfaces Sa1 and Sb1. It is formed on the back side of 231B and 331B.
  • each second surface side division area D2 the second recess 222B and 222B are arranged every other one with respect to the first recess 222A and 222A. That is, one first recess 222A and one 222A are arranged between the second recesses 222B and 222B adjacent to each other in the Y-axis direction.
  • each second surface side divided region D2 is the same. Therefore, the first recesses 222A and 322A of each second surface side dividing region D2 are arranged straight in the Z-axis direction (that is, arranged on the same straight line). Further, the second recesses 222B and 222B of each second surface side dividing region D2 are arranged straight in the Z-axis direction. Further, the ridges 232 and 332 for forming the second flow path of each second surface side division region D2 are lined up straight in the Z-axis direction.
  • the weir portions 26 and 36 are arranged on one side and the other side of the main heat transfer portions 25 and 35 in the Z-axis direction in the heat transfer portions 20 and 30, respectively. That is, the heat transfer portions 20 and 30 have a pair of weir portions 26 and 36.
  • Each of the weirs 26 and 36 of the present embodiment has two openings arranged at one end or the other end in the Z-axis direction of the heat transfer portions 20 and 30 with the boundary with the main heat transfer portions 25 and 35 as the base. It is a triangular portion having an intermediate position of 200, 201, 202, 203, 300, 301, 302, and 303 as an apex.
  • Each of these pair of weir portions 26, 36 has openings 200, 201, 202, 203, 300, 301, 302, 303 along the first surface Sa1, Sb1 or the second surface Sa2, Sb2 to the main heat transfer portion 25.
  • the flow of the fluids A and B toward 35 is diffused in the Y-axis direction, or the openings 200, 201 and 202 are opened from the main heat transfer portions 25 and 35 along the first surface Sa1, Sb1 or the second surface Sa2 and Sb2.
  • 203, 300, 301, 302, 303 to focus the flows of fluids A and B in the Y-axis direction (see FIGS. 16 and 17).
  • each of the weir portions 26 and 36 has a plurality of first surface side concave portions 225 and 325 and a plurality of first surface side convex portions 235 and 335 on the first surface Sa1 and Sb1.
  • the first surface side concave portions 225 and 325 and the first surface side convex portions 235 and 335 are alternately arranged in each direction of inclining to one side and inclining to the other side with respect to the Z-axis direction. ing.
  • the plurality of first surface side concave portions 225 and 325 are included in the plurality of concave portions 22 and 32 of the above-mentioned heat transfer portions 20 and 30, and the plurality of first surface side convex portions 235 and 335 are the above-mentioned heat transfer portions. It is included in the plurality of convex portions 23 and 33 of 20 and 30.
  • each weir portion 26, 36 has a plurality of second surface side concave portions 226, 326 and a plurality of second surface side convex portions 236, 336 on the second surface Sa2, Sb2.
  • the plurality of second surface side recesses 226 and 326 and the plurality of second surface side convex portions 236 and 336, respectively, are the first surface side recesses 225, 325 or the first at the corresponding positions on the first surfaces Sa1 and Sb1. It is formed on the back side of the surface side convex portions 235 and 335.
  • the second surface side concave portion 226, 326 and the second surface side convex portion 236, 336 alternate in each direction of the direction of inclining to one side and the direction of inclining to the other side with respect to the Z-axis direction. Is located in.
  • the plurality of second surface side concave portions 226 and 326 are included in the plurality of concave portions 22 and 32 of the above-mentioned heat transfer portions 20 and 30, and the plurality of second surface side convex portions 236 and 336 are the above-mentioned heat transfer portions. It is included in the plurality of convex portions 23 and 33 of 20 and 30.
  • Both the first heat transfer plate 2 and the second heat transfer plate 3 have heat transfer portions 20 and 30 configured as described above.
  • the fitting portion 21 of the first heat transfer plate 2 extends from the outer peripheral edge of the heat transfer portion 20 toward the first surface Sa1 (see FIGS. 2 and 3).
  • the fitting portion 31 of the second heat transfer plate 3 extends from the outer peripheral edge of the heat transfer portion 30 toward the second surface Sb2 (see FIGS. 2 and 6).
  • the first heat transfer plate 2 and the second heat transfer plate 3 configured as described above have their first surfaces Sa1 and Sb1 facing each other, or their second surfaces. Sa2 and Sb2 are alternately superposed in the X-axis direction so as to face each other. That is, each of the plurality of heat transfer plates 2 and 3 has the first surfaces Sa1 and Sb1 of the heat transfer portions 20 and 30 adjacent to each other on one side in the X-axis direction. The heat transfer portions 20 and 30 of the heat transfer plates 2 and 3 adjacent to each other on the other side in the X-axis direction while facing the first surfaces Sa1 and Sb1 of 30 and the second surfaces Sa2 and Sb2 of the heat transfer portions 20 and 30. The second surface Sa2 and Sb2 of the above surface are opposed to each other.
  • the fitting portions 21 and 31 of one of the heat transfer plates 2 and 3 adjacent to each other in the X-axis direction are the X-axis. It is fitted with the fitting portions 21, 31 of the other heat transfer plates 2, 3 of the heat transfer plates 2, 3 adjacent to each other in the direction.
  • first heat transfer plate 2 and second heat transfer plate 2 adjacent to each other so that the first surfaces Sa1 and Sb1 face each other.
  • the heat transfer plate pair 5 is formed by superimposing the plates 3).
  • a plurality of the heat transfer plate pairs 5 are formed (see FIG. 2). These plurality of heat transfer plate pairs 5 are superposed so that the second surfaces Sa2 and Sb2 face each other.
  • the plurality of heat transfer plate pairs 5 are superposed in a state of being rotated by 180 ° around an imaginary line extending in the X-axis direction every other one.
  • each of these heat transfer plate pairs 5 the corresponding first surface side division regions D1 (specifically, at the same position in the Z-axis direction) of the opposite first surfaces Sa1 and Sb1 face each other. Then, in the facing first surface side divided regions D1 (first surfaces Sa1, Sb1), the first flow path forming recesses 221 and 321 and the first flow path forming protrusions 231 and 331 are formed in the Y-axis direction. By arranging them alternately, as shown in FIG. 13, a plurality of ridge pairs 6 formed by facing first flow path forming ridges 231 and 331 are lined up in the Y-axis direction.
  • the first ridges 231A and 331A facing each other face each other with an interval in the X-axis direction. do. Further, in the remaining ridge pairs (second ridge pairs) 6B, the second ridges 231B and 331B facing each other are in contact with each other. In the heat transfer plate pair 5 of the present embodiment, the first ridge pair 6A and the second ridge pair 6B are alternately arranged in the Y-axis direction.
  • each heat transfer plate pair 5 the plurality of barrier backside recesses 223 and 323 of the facing first surfaces Sa1 and Sb1 face each other.
  • the heat transfer portions 20 and 30 extend from one end to the other end along the Y-axis direction at positions corresponding to the barrier backside recesses 223 and 323 between the first surfaces Sa1 and Sb1.
  • a columnar space S1 is formed.
  • one heat transfer plate pair 5 is adjacent to the other heat transfer plate pair 5 in a state of being rotated 180 ° around a virtual line extending in the X-axis direction. Matching. Then, in the second surfaces Sa2 and Sb2, the dimension of the second surface side division region D2 at one end in the Z axis direction in the Z axis direction is half of the dimension of the other second surface side division region D2 in the Z axis direction or It's about half. Therefore, the second surface side division regions D2 of the opposite second surfaces Sa2 and Sb2 face each other in a state of being displaced in the Z-axis direction.
  • the second surface side division region D2 of Sb2 is opposed to the second surface side division region D2 in a state of being deviated by a half pitch in the Z axis direction (distance corresponding to the dimension of the second surface side division region D2 at one end in the Z axis direction in the Z axis direction). ing. That is, the ridges 233, 333 for each barrier of the second surface Sa2, Sb2 of the two opposing surfaces Sa2, Sb2, and the ridges 233, 333 for each barrier of the other second surfaces Sa2, Sb2.
  • the ridges 233, 333 for each barrier of one second surface Sa2 and Sb2 and the ridges 233 and 333 for each barrier of the other second surface Sa2 and Sb2 are in the Z-axis direction. They are arranged at positions offset by half a pitch.
  • the barrier ridges 233 and 333 on one of the second surfaces Sa2 and Sb2 are arranged on the other second surface Sa2 and Sb2 at intervals in the Y-axis direction.
  • a plurality of ridges 233, 333 for barriers of the other second surfaces Sa2 and Sb2 are arranged at intervals in the Y-axis direction on one of the second surfaces Sa2 and Sb2 while abutting on each of the 232 and 332. It comes into contact with each of the two flow path forming ridges 232 and 332. As a result, as shown in FIG.
  • the heat transfer portions 20 and 30 in the Y-axis direction are straightened in the Z-axis direction from one end to the other end. There is no area where it can flow. That is, while the second fluid B flows from one end to the other end of the heat transfer portions 20 and 30 in the Z-axis direction, the barrier of the second surfaces Sa2 and Sb2 of any of the two opposing surfaces Sa2 and Sb2. It collides with the ridges 233 and 333.
  • a plurality of second flow path forming ridges 232 and 332 on one of the second surfaces Sa2 and Sb2 are formed. And each of the plurality of second flow path forming ridges 232 and 332 of the other second surfaces Sa2 and Sb2 are arranged at positions shifted in the Y-axis direction so as not to come into contact with each other.
  • the center of the recesses 222 and 222 for forming the second flow path in the Y-axis direction and the second flow path adjacent to the recesses 222 and 222 for forming the second flow path are adjacent to each other.
  • the distance from the center of the forming ridges 232 and 332 in the Y-axis direction is one pitch
  • the second flow path forming recesses 222 and 322 and the second flow path are formed in each second surface side division region D2.
  • the arrangement with the ridges 232 and 332 is shifted by 1/2 pitch with respect to the line-symmetrical arrangement with the vertical center line CL as the axis of symmetry (see FIGS. 4 and 6).
  • the ridges 232 and 332 for forming the second flow path on one of the second surfaces Sa2 and Sb2 and the dents 222 and 322 for forming the second flow path on the other surfaces Sa2 and Sb2 face each other and one side.
  • the second flow path forming recess 222, 322 of the second surface Sa2, Sb2 and the second flow path forming convex line 232, 332 of the other second surface Sa2, Sb2 face each other.
  • the recesses 222 and 322 for forming the second flow path and the ridges 232 and 332 for forming the second flow path are arranged on each of the two surfaces.
  • the arrangement of the second flow path forming recesses 222 and 322 and the second flow path forming protrusions 232 and 332 in each of the second surface side division regions D2 is one pitch, respectively. They are facing each other in a misaligned state.
  • a plurality of heat transfer plates 2 and 3 are superposed to form a heat transfer plate group, so that the first fluid A can flow between the first surfaces Sa1 and Sb1 in the Z-axis direction.
  • the second flow path Rb through which the second fluid B can flow in the Z-axis direction is formed between the second surfaces Sa2 and Sb2, respectively.
  • openings 200, 201, 202, 203, 300, 301, 302, 303 located at corresponding positions of the heat transfer portions 20 and 30 are connected in the X-axis direction. Further, the opening peripheral portions 200p, 201p, 202p, 203p, 300p, 301p, 302p, and 303p that face each other and bulge toward the other party come into contact with each other.
  • the first outflow path Pa2 that causes the first fluid A to flow out from the first flow path Ra
  • the second fluid B to the second flow path Rb.
  • a second inflow path Pb1 for supplying the fluid and a second outflow path Pb2 for discharging the second fluid B from the second flow path Rb are formed (see FIGS. 2 and 15).
  • Each of the pair of frame plates 4 is thicker than the heat transfer plates 2 and 3 to ensure the strength of the heat exchanger 1.
  • one of the frame plates 4A of the pair of frame plates 4 has a thick plate-shaped plate body 41A extending in a direction orthogonal to the X-axis direction and a plate body 41A.
  • a frame fitting portion 42A extending from the entire outer peripheral edge of the plate body 41A in a direction intersecting with the plate body 41A, and a plurality of nozzles 43 extending from the plate body 41A are provided.
  • the plate body 41A has a shape corresponding to the heat transfer portions 20 and 30 of the heat transfer plates 2 and 3.
  • the plate body 41A of the present embodiment has a long rectangular shape in the Z-axis direction.
  • the plate body 41A has a through hole penetrating in the Z-axis direction at a position overlapping each of the first inflow path Pa1, the first outflow path Pa2, the second inflow path Pb1, and the second outflow path Pb2 when viewed from the X-axis direction.
  • the plate body 41A of the present embodiment has through holes at the four corners.
  • the frame fitting portion 42A extends from the outer peripheral edge of the plate body 41A to the heat transfer plates 2 and 3 sides.
  • Each of the plurality of nozzles 43 is a tubular portion, and extends in the X-axis direction from a position corresponding to each through hole of the plate body 41A.
  • the hollow portion of each nozzle 43 communicates with the through hole of the plate body 41A.
  • the hollow portion of each nozzle 43 communicates with the first inflow path Pa1, the first outflow path Pa2, the second inflow path Pb1, or the second outflow path Pb2.
  • the other frame plate 4B of the pair of frame plates 4 intersects the plate main body 41B extending in the direction orthogonal to the X-axis direction and the plate main body 41B from the entire outer peripheral edge of the plate main body 41B.
  • a frame fitting portion 42B extending in the direction is provided.
  • the plate body 41B has a shape corresponding to the heat transfer portions 20 and 30 of the heat transfer plates 2 and 3.
  • the plate body 41B of the present embodiment has a long rectangular shape in the Z-axis direction.
  • the frame fitting portion 42B extends from the outer peripheral edge of the plate body 41B to the side opposite to the heat transfer plates 2 and 3, that is, to the side away from the heat transfer plates 2 and 3.
  • the pair of frame plates 4A and 4B configured as described above sandwich the heat transfer plate group from the outside in the X-axis direction.
  • the frame fitting portion 42A of one frame plate 4A is externally fitted to the fitting portion 31 of the heat transfer plate 3 adjacent in the X-axis direction.
  • the frame fitting portion 42B of the other frame plate 4B is externally fitted to the fitting portion 21 of the heat transfer plate 2 adjacent in the X-axis direction.
  • the abutting portions of the adjacent frame plates 4 and the heat transfer plates 2 and 3 and the abutting portions of the adjacent heat transfer plates 2 and 3 are brazed. Has been done.
  • the plurality of heat transfer plates 2, 3 and the pair of frame plates 4 are integrally (mechanically) connected, and the facing surfaces (contact portions) of the adjacent heat transfer plates 2, 3 are sealed. Will be done.
  • the first fluid A supplied from the outside to the first inflow path Pa1 is a plurality of first streams from the first inflow path Pa1 as shown in FIGS. 2 and 15. It flows into each of the roads Ra. Then, the first fluid A flows in the Z-axis direction between the openings 202, 203, 302, and 303 arranged at diagonal positions of the heat transfer portions 20 and 30 in each of the plurality of first flow paths Ra, and flows through the first outflow path. It flows out to Pa2 (see FIG. 16).
  • the second fluid B supplied from the outside to the second inflow path Pb1 flows into each of the plurality of second flow paths Rb from the second inflow path Pb1.
  • the second fluid B flows in the Z-axis direction between the openings 200, 201, 300, and 301 arranged at diagonal positions of the heat transfer portions 20 and 30 in each of the plurality of second flow paths Rb, and the second fluid B flows. It flows out to the outflow path Pb2 (see FIG. 17).
  • the first fluid A flowing through the first flow path Ra and the second fluid B flowing through the second flow path Rb are heat transfer plates 2, 3 (which separate the first flow path Ra and the second flow path Rb). Heat is exchanged via the heat transfer units 20 and 30). As a result, the first fluid A condenses or evaporates in the process of flowing in the first flow path Ra in the Z-axis direction.
  • a fluid whose phase changes due to heat exchange such as chlorofluorocarbon is used as the first fluid A, and water or the like is used as the second fluid, but the present invention is not limited to these.
  • the first ridges 231A and 331A face each other with a gap in the X-axis direction.
  • first surfaces Sa1, Sb1 defining the first flow path Ra, as compared with the case where the first flow path forming ridges 231 and 331 facing each other at the position are in contact with each other.
  • the interval increases (see FIG. 13). Therefore, the flow path cross-sectional area of the first flow path Ra becomes large.
  • the first ridges 231A and 331A face each other with a gap in the X-axis direction, so that the first ridges 231A and 331A facing each other at the position are in contact with each other.
  • the distance between the surfaces Sa2 and Sb2) in the X-axis direction becomes smaller (see FIG. 13). Therefore, the flow path cross-sectional area of the second flow path Rb becomes small.
  • the flow path cross-sectional area of the first flow path Ra and the second flow path Rb is larger than that in the case where the first ridges 231A and 331A facing each other in the first ridge pair 6A are in contact with each other.
  • the difference becomes large. Therefore, in the heat exchanger 1, the difference between the flow velocity of the first fluid A flowing through the first flow path Ra and the flow velocity of the second fluid B flowing through the second flow path Rb becomes large, and as a result, for example, the freon as described above. Sufficient heat exchange performance can be obtained even when heat exchange is performed between the first fluid A and the second fluid B having different characteristics such as water and water.
  • the second fluid B when the second fluid B flows in the Z-axis direction through the second flow path Rb formed between the opposite second surfaces Sa2 and Sb2, the second fluid B can also move in the Y-axis direction. That is, when the ridges 232 and 332 for forming the second flow path of the opposite second surfaces Sa2 and Sb2 are in contact (contact) with each other, the contact portion between the ridges 232 and 332 for forming the second flow path is contacted.
  • Second when the second fluid B flows in the second flow path Rb in the Z-axis direction (flows along the second flow path forming recess 222, 322 and the second flow path forming convex line 232, 332).
  • the movement of the fluid B in the Y-axis direction is restricted. As a result, the bias in the Y-axis direction in the flow (flow rate) of the second fluid B is suppressed, and as a result, the deterioration of the heat exchange performance due to the bias can be prevented.
  • the ridges 232 and 332 for forming the second flow path of one of the two opposing surfaces Sa2 and Sb2, the second surface Sa2 and Sb2, are the other second surface Sa2.
  • Sb2 facing the second flow path forming recess 222,322 and one second surface Sa2, Sb2 for second flow path forming recess 222,322 is the second of the other second surface Sa2, Sb2. It faces the flow path forming ridges 232 and 332.
  • the second flow path Rb extends in the Y direction so as to meander when viewed from the Z-axis direction (see FIG.
  • the second surfaces Sa2 and Sb2 have a plurality of barrier ridges 233 and 333 extending in a direction intersecting the Z-axis direction, and each barrier ridge 233,333. Is in contact with each of the plurality of second flow path forming ridges 232 and 332 on the second surface Sa2 and Sb2 on the other side.
  • turbulence turbulence, etc.
  • the flow path width of the second flow path Rb at this position becomes small or disappears, and the flow resistance of the second flow path Rb becomes too large.
  • the flow path width at each position in the Z-axis direction becomes large. It is ensured that the flow resistance of the second flow path Rb is prevented from becoming too large.
  • the second fluid B collides with the barrier ridges 233 and 333 provided on one of the second surfaces Sa2 and Sb2 and the other second surface Sa2 and Sb2, respectively, in the second flow path Rb. Sufficient turbulence can occur in the flow of the second fluid B.
  • X on the tops of the barrier ridges 233 and 333 and the tops of the second flow path forming ridges 232 and 332 on the opposite second surfaces Sa2 and Sb2, respectively.
  • the axial position is the same.
  • a region communicating in the Z-axis direction in the second flow path Rb in other words, a region that allows the second fluid B to pass through without colliding with the heat transfer plates 2 and 3 when flowing in the Z-axis direction. It does not occur (see FIG. 13).
  • the second fluid B is used in the recesses 222 and 222 for forming the second flow path of one of the second surfaces Sa2 and Sb2 (in other words, for forming the second flow path adjacent to each other of the second surfaces Sa2 and Sb2). Even when the fluid flows between the ridges 232 and 332), it is inside the recesses 222 and 322 for forming the second flow path of the other second surfaces Sa2 and Sb2 (in other words, the other second surfaces Sa2 and Sb2 are adjacent to each other. Even when the fluid flows between the two flow path forming ridges 232 and 332), it collides with the barrier ridges 233 and 333.
  • the plate heat exchanger of the present invention is not limited to the above embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention.
  • the configuration of one embodiment can be added to the configuration of another embodiment, and a part of the configuration of one embodiment can be replaced with the configuration of another embodiment.
  • some of the configurations of certain embodiments can be deleted.
  • a plurality of barrier ridges 233 and 333 are arranged on the opposite second surfaces Sa2 and Sb2, but the configuration is not limited to this.
  • the barrier ridges 233 and 333 may be arranged only on one of the opposite second surfaces Sa2 and Sb2. Further, the barrier ridges 233 and 333 may not be provided on the second surfaces Sa2 and Sb2, and only one may be arranged.
  • the barrier ridges 233 and 333 of the above embodiment extend straight from one end to the other end of the heat transfer portions 20 and 30 in the Y-axis direction, but the configuration is not limited to this.
  • the barrier ridges 233 and 333 may extend in a direction intersecting the Z-axis direction. Further, the barrier ridges 233 and 333 may be arranged in a partial range (region) in the Y-axis direction of the heat transfer portions 20 and 30. Further, the ridges 233 and 333 for the barrier may be bent or curved at one or a plurality of places. Further, the ridges 233 and 333 for the barrier may be extended intermittently.
  • the tops of the barrier ridges 233 and 333 of the above embodiment are at the same positions as the tops of the second flow path forming ridges 232 and 332 in the X-axis direction, that is, with the barrier ridges 233 and 333.
  • the heights of the ridges 232 and 332 for forming the second flow path are the same, but the height is not limited to this configuration.
  • the tops of the barrier ridges 233 and 333 may be higher or lower than the second flow path forming ridge 232.
  • each flow path (the recesses 221 and 321 for forming the first flow path, the recesses 222 and 222 for forming the second flow path) and the protrusions for forming each flow path in the heat exchanger 1 of the above embodiment.
  • Convex 231 and 331 for forming the first flow path, ridge 232 and 332 for forming the second flow path are arranged from one end to the other end in the Y-axis direction of the divided regions D1 and D2, and each of them is arranged in the Z-axis direction. It extends straight to, but is not limited to this configuration.
  • the recesses 221 and 222, 321 and 322 for forming the flow path and the protrusions 231, 232, 332, 332 and 332 for forming the flow path may be inclined with respect to the Z-axis direction, and may be inclined at one place or a plurality of places. It may be bent or curved. That is, the recesses 221, 222, 321 and 322 for forming each flow path and the ridges 231, 232, 332, 332 for forming each flow path may extend along the Z-axis direction.
  • the recesses 221, 222, 321 and 322 for forming each flow path and the protrusions 231, 232, 332, 332 for forming each flow path are formed in the divided regions D1, D2 or the heat transfer portions 20 and 30 in the Z-axis direction. It may be arranged in a part of a range (area). Further, the recesses 221, 222, 321 and 322 for forming each flow path and the ridges 231, 232, 332, 332 for forming each flow path may be extended intermittently.
  • the positions of the tops of the first ridges 231A and 331A are the positions of the tops of the second ridges 231B and 331B and the recesses for forming the second flow path in the X-axis direction. It is a central position with respect to the position of the bottom of 222, 222, but is not limited to this configuration.
  • the position of the top of the first ridges 231A and 331A is the position on the bottom side of the second flow path forming recesses 222 and 322 from the position of the top of the second ridges 231B and 331B. Any position may be used as long as it is located on the top side of the second ridges 231B and 331B from the position of the bottom of the second flow path forming recesses 222 and 322.
  • the first ridges 231A and 331A are used in the ridge group composed of a plurality of ridges 231 and 331 for forming the first flow path arranged at intervals in the Y-axis direction.
  • the second ridges 231B and 331B are arranged alternately, in other words, the first ridges 231A and 331A are arranged one by one between the second ridges 231B and 331B adjacent to each other in the Y-axis direction.
  • a plurality of the first ridges 231A and 331A may be arranged between the second ridges 231B and 331B adjacent to each other in the Y-axis direction.
  • the number of the first ridges 231A and 331A arranged between the second ridges 231B and 331B adjacent to each other in the Y-axis direction is preferably two or less from the viewpoint of strength. ..
  • the number of the first ridges 231A and 331A arranged between the second ridges 231B and 331B adjacent to each other in the Y-axis direction may be different for each part (region) of the heat transfer portions 20 and 30. ..
  • first ridges 231A and 331A have at least one groove portions 2310 and 3310 that cross the first ridges 231A and 331A in the Y-axis direction at an intermediate position in the Z-axis direction (examples shown in FIGS. 18 and 19). Then you may have one).
  • the first ridges 231A and 331A facing each other are not in contact with each other (opposed at intervals). Therefore, the strength against the force in the direction in which the first ridges 231A and 331A approach each other is lower than that in the configuration in which the first ridges 231A and 331A are in contact with each other.
  • the strength of the portion can be improved. ..
  • first protrusions 231A and 331A need to have the grooves 2310 and 3310.
  • a portion where the strength tends to be low in the heat transfer portions 20 and 30 such as the peripheral portion of the main heat transfer portions 25 and 35 and the boundary portion with other portions such as the weir portions 26 and 36 in the main heat transfer portions 25 and 35.
  • Only the first ridges 231A and 331A of the above may have grooves 2310 and 3310.
  • a plurality of second flow path forming ridges 232 of one of the second surfaces Sa2 and Sb2 are arranged at positions deviated from each other in the Y-axis direction so as not to come into contact with each other.
  • the ridges 232 and 332 for forming the second flow path of the opposite second surfaces Sa2 and Sb2 may be in contact with each other.
  • the specific flow path configuration in the heat exchanger 1 is not limited.
  • the flow paths Ra and Rb are connected in parallel between the inflow paths Pa1 and Pb1 and the outflow paths Pa2 and Pb2, but the flow of the heat exchanger 1 In the path (that is, the flow path of the fluids A and B from flowing into the heat exchanger 1 to flowing out to the outside), a portion connected in series or a portion connected in parallel is provided. You may.
  • the heat exchanger 1 of the above embodiment includes only the first heat transfer plate 2 and the second heat transfer plate 3 as heat transfer plates, but is not limited to this configuration.
  • the heat exchanger 1 at least one end of the heat transfer plate group in which the first heat transfer plate 2 and the second heat transfer plate 3 are superposed on each other in the Z-axis direction, the heat transfer plate according to the above embodiment.
  • a group of heat transfer plates on which heat transfer plates having different configurations from those of 2 and 3 are overlapped may be overlapped.
  • Heat transfer plate A ... No. One fluid (fluid), B ... second fluid (fluid), CL ... vertical center line, D1 ... first surface side division region, D2 ... second surface side division region, Pa1 ... first inflow path, Pa2 ... first flow Outgoing path, Pb1 ... Second inflow path, Pb2 ... Second outflow path, Ra ... First flow path (flow path), Rb ... Second flow path (flow path), S1 ... Columnar space, Sa1, Sb1 ... First surface , Sa2, Sb2 ... Second side

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

Abstract

La présente invention est caractérisée en ce que : une pluralité de paires de plaques de transfert thermique, dont un côté se trouve en face de l'autre, se chevauchent, un premier canal étant formé entre les deux côtés et un second canal étant formé entre les autres côtés ; dans chacune des paires de plaques de transfert thermique, des sections inférieures et des sections supérieures s'étendant dans la direction de l'axe Z sur des côtés respectifs se faisant face sont disposées en alternance dans la direction de l'axe Y, chacune des paires de plaques de transfert thermique comprenant une pluralité de paires de sections supérieures qui sont configurées à partir de sections supérieures se faisant face et qui sont disposées dans la direction de l'axe Y ; et dans au moins une paire de sections supérieures parmi la pluralité de paires de sections supérieures, les sections supérieures se font face à travers un espace.
PCT/JP2021/003494 2020-02-05 2021-02-01 Échangeur thermique à plaques WO2021157514A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21751027.0A EP4098965A4 (fr) 2020-02-05 2021-02-01 Échangeur thermique à plaques
CN202180011114.4A CN115003979A (zh) 2020-02-05 2021-02-01 板式热交换器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020017866A JP7181241B2 (ja) 2020-02-05 2020-02-05 プレート式熱交換器
JP2020-017866 2020-02-05

Publications (1)

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WO2021157514A1 true WO2021157514A1 (fr) 2021-08-12

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JP (1) JP7181241B2 (fr)
CN (1) CN115003979A (fr)
WO (1) WO2021157514A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2024014495A1 (fr) * 2022-07-13 2024-01-18 ダイキン工業株式会社 Échangeur de chaleur, dispositif à cycle de fluide frigorigène et appareil d'alimentation en eau chaude

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001059688A (ja) * 1999-08-23 2001-03-06 Daikin Ind Ltd プレート式熱交換器
JP2010085094A (ja) * 2010-01-20 2010-04-15 Hisaka Works Ltd プレート式熱交換器
WO2018216165A1 (fr) * 2017-05-25 2018-11-29 株式会社日阪製作所 Échangeur de chaleur de type à plaques
JP3222546U (ja) 2019-05-27 2019-08-08 大成工業株式会社 プレート式熱交換器
WO2019224767A1 (fr) * 2018-05-24 2019-11-28 Ecosfera S.R.L. Dispositif d'échange de chaleur

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DE602004004114T3 (de) * 2004-08-28 2014-07-24 Swep International Ab Plattenwärmetauscher
WO2007036963A1 (fr) * 2005-09-30 2007-04-05 Gianni Candio Procédé de fabrication d’un échangeur de chaleur à plaques possédant des plaques reliées par des points de contacts fondus et échangeur de chaleur ainsi obtenu
JP6069425B2 (ja) 2015-07-03 2017-02-01 株式会社日阪製作所 プレート式熱交換器
WO2017122428A1 (fr) 2016-01-13 2017-07-20 株式会社日阪製作所 Échangeur de chaleur à plaques

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001059688A (ja) * 1999-08-23 2001-03-06 Daikin Ind Ltd プレート式熱交換器
JP2010085094A (ja) * 2010-01-20 2010-04-15 Hisaka Works Ltd プレート式熱交換器
WO2018216165A1 (fr) * 2017-05-25 2018-11-29 株式会社日阪製作所 Échangeur de chaleur de type à plaques
WO2019224767A1 (fr) * 2018-05-24 2019-11-28 Ecosfera S.R.L. Dispositif d'échange de chaleur
JP3222546U (ja) 2019-05-27 2019-08-08 大成工業株式会社 プレート式熱交換器

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Title
See also references of EP4098965A4

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024014495A1 (fr) * 2022-07-13 2024-01-18 ダイキン工業株式会社 Échangeur de chaleur, dispositif à cycle de fluide frigorigène et appareil d'alimentation en eau chaude
JP7502700B2 (ja) 2022-07-13 2024-06-19 ダイキン工業株式会社 熱交換器、冷媒サイクル装置、給湯器

Also Published As

Publication number Publication date
CN115003979A (zh) 2022-09-02
EP4098965A1 (fr) 2022-12-07
JP2021124242A (ja) 2021-08-30
JP7181241B2 (ja) 2022-11-30
EP4098965A4 (fr) 2023-07-19

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