JP2019215096A - Laminated heat exchanger - Google Patents

Abstract

To provide a laminated heat exchanger capable of improving diffusibility of a heat exchange medium and holding pressure resistance.SOLUTION: A laminated heat exchanger 1 includes: a plurality of plates 3 formed in a rectangular shape and laminated in a plate thickness direction; a communication hole 5 provided on one side in a lengthwise direction of the plate 3 which communicates with a plurality of plates 3 and causes a heat exchange medium to flow out between the plates 3 and 3 adjacent to each other; a peripheral flow channel 7 provided in the vicinity of the communication hole 5 of the plate 3 which causes the heat exchange medium flowing out of the communication hole 5 to flow from one side in the lengthwise direction of the plate 3 to the other side; and a fin part 9 provided adjacent to the peripheral flow channel 7 of the plate 3 which promotes heat exchange of the heat exchange medium that flows out of the peripheral flow channel 7. A plurality of beads 11 are formed in the peripheral flow channel 7, which are extended inclined with respect to the lengthwise direction and the width direction of the plate 3, the inclination directions being different between the adjacent plates 3 and 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a laminated heat exchanger applied to a vehicle. More specifically, the present invention relates to a stacked heat exchanger in which a plurality of plates are stacked and a heat exchange medium flows between adjacent plates.

  Conventionally, as a stacked heat exchanger, between a plate formed in a rectangular shape and a plurality of stacked in the plate thickness direction, and a plurality of plates provided on one side in the length direction of the plate and communicating with the plurality of plates, and between adjacent plates An inflow portion as a communication hole through which the heat exchange medium flows out, and a peripheral flow path provided near the inflow portion of the plate and flowing the heat exchange medium flowing out of the inflow portion from one side in the length direction of the plate toward the other side. A fin portion provided adjacent to a peripheral flow path of a plate and provided to promote heat exchange of a heat exchange medium flowing out of the peripheral flow path is known (for example, see Patent Document 1).

  In this laminated heat exchanger, the peripheral flow path is provided at a portion where the non-divided portion formed by a plurality of straight fins extending along the length direction of the plate and the outflow portion of the non-divided portion are located. And a dividing portion formed by a plurality of offset fins.

  In such a stacked heat exchanger, the heat exchange medium flowing out of the outflow portion flows out to the fin portion through the non-divided portion, and heat exchange of the heat exchange medium is promoted in the fin portion.

  In such a stacked heat exchanger, the heat exchange medium flowing out of the outflow portion flows out of the dividing portion in the width direction of the plate, so that the heat exchange medium is supplied to each of the plurality of straight fins arranged in the width direction of the plate. It can be diffused, and the heat exchange efficiency of the heat exchange medium can be improved.

JP 2017-133718 A

  However, in the stacked heat exchanger as described in Patent Document 1, since the peripheral flow path is a straight fin, the heat exchange medium easily flows into the straight fin near the communication hole, and is separated from the communication hole via the offset fin. The supply amount of the heat exchange medium to the straight fin was small, and the diffusivity of the heat exchange medium was not so much improved.

  Further, in the laminated heat exchanger as disclosed in the above-mentioned Patent Document 1, the diffusivity of the heat exchange medium can be increased by making the cuts of the offset fins large and forming the fins coarse, but the bonding strength between the fins and the adjacent plate is increased. And the pressure resistance is reduced.

  Therefore, an object of the present invention is to provide a laminated heat exchanger that can improve the diffusivity of a heat exchange medium and maintain pressure resistance.

  The invention according to claim 1 is provided between a plate formed in a rectangular shape, a plurality of which are overlapped in a plate thickness direction, and a plurality of the plates provided on one side in the length direction of the plate and communicating with the plurality of plates. A communication hole for allowing a heat exchange medium to flow out, and a peripheral flow path provided in the vicinity of the communication hole of the plate and allowing the heat exchange medium flowing out from the communication hole to flow from one side in the length direction of the plate to the other side. A fin portion provided adjacent to the peripheral flow path of the plate and promoting heat exchange of a heat exchange medium flowing out of the peripheral flow path, Is characterized in that a plurality of beads having different inclination directions are formed on adjacent plates extending in an inclined manner with respect to the length direction and the width direction of the plate.

  In this laminated heat exchanger, since a plurality of beads, which extend in an inclined manner with respect to the length direction and the width direction of the plate and are different in the inclination direction in adjacent plates, are formed in the peripheral flow path, the communication holes are formed. The heat exchange medium flowing out of the fin portion is diffused in the width direction of the plate along the plurality of beads formed at an angle and flows out to the fin portion, so that the diffusivity of the heat exchange medium can be improved.

  In addition, since the plurality of beads have different inclination directions between adjacent plates, when a plurality of plates are overlapped, the intersection of the beads of the adjacent plates becomes a joint, and if a plurality of beads are increased, the heat is increased. While improving the diffusivity of the exchange medium, the number of joints between the beads is increased, the joining strength between adjacent plates is increased, and the pressure resistance can be improved.

  Therefore, in such a laminated heat exchanger, the diffusivity of the heat exchange medium can be improved, and the pressure resistance can be maintained.

  The invention according to claim 2 is the stacked heat exchanger according to claim 1, wherein an end of the fin portion on the peripheral flow path side is in contact with an outer diameter of the communication hole among the plurality of beads. One bead is arranged between the contact portions that contact the center in the width direction of the plate.

  In this stacked heat exchanger, the end of the fin portion on the peripheral flow path side is disposed between the contact portions of the plurality of beads that are in contact with the outer diameter of the communication hole and that are in contact with the center in the width direction of the plate. Therefore, the heat exchange medium can flow out from the peripheral channel to the fin portion by efficiently using the diffusivity in the peripheral channel.

  The invention according to claim 3 is the laminated heat exchanger according to claim 1 or 2, wherein the plurality of beads have an inclination direction on one side and the other side with respect to a center in the width direction of the plate. It is different.

  In this stacked heat exchanger, since the plurality of beads have different inclination directions on one side and the other side with respect to the center in the width direction of the plate, the flow of the heat exchange medium flowing in the peripheral flow path is in the width direction of the plate. , And the stirring effect is promoted, and the heat exchange of the heat exchange medium can be improved.

  The invention according to claim 4 is the stacked heat exchanger according to any one of claims 1 to 3, wherein the end of the fin portion on the peripheral flow path side is the end of the plurality of beads. A bead passing through the center of the communication hole is arranged at a contact portion in contact with the center in the width direction of the plate.

  In this stacked heat exchanger, the end of the fin portion on the peripheral flow path side is located at the contact portion where the bead passing through the center of the communication hole out of the plurality of beads is in contact with the center in the width direction of the plate. The heat exchange medium can flow out from the peripheral flow path to the fin portion by making full use of the diffusivity in the flow path.

  The invention according to claim 5 is the stacked heat exchanger according to any one of claims 1 to 4, wherein a peripheral portion of the plate is provided between the peripheral flow path and the fin portion. A stopper is provided between the fin and the fin to regulate the flow of the heat exchange medium flowing out of the peripheral flow path.

  In this stacked heat exchanger, a stopper portion is provided between the peripheral flow path and the fin portion, between the peripheral portion of the plate and the fin portion, for regulating the flow of the heat exchange medium flowing out of the peripheral flow path. Therefore, it is possible to restrict the heat exchange medium from flowing around the peripheral portion of the plate, to allow the heat exchange medium to flow through the fin portions, and to improve the heat exchange efficiency of the heat exchange medium.

  According to a sixth aspect of the present invention, in the stacked heat exchanger according to the fifth aspect, the stopper is arranged such that a bead arranged on the fin side among a plurality of the beads hits a peripheral edge of the plate. It has a stretch bead portion formed by being stretched until it comes into contact.

  In this stacked heat exchanger, the stopper portion has the extended bead portion formed by extending the bead arranged on the fin portion side of the plurality of beads until it comes into contact with the peripheral portion of the plate, so that the adjacent plate By joining the stretched bead portions, it is possible to stably restrict the flow of the heat exchange medium to the peripheral edge portion of the plate.

  According to a seventh aspect of the present invention, in the stacked heat exchanger according to the fifth or sixth aspect, the stopper portion has a concave portion formed by being depressed until a peripheral portion of the plate comes into contact with the fin portion. It is characterized by having.

  In this stacked heat exchanger, since the stopper portion has the concave portion formed by being recessed until the peripheral portion of the plate comes into contact with the fin portion, the gap between the peripheral portion of the plate and the fin portion can be filled with the concave portion. Thus, it is possible to stably restrict the heat exchange medium from flowing around the peripheral edge of the plate.

  The invention according to claim 8 is the stacked heat exchanger according to any one of claims 5 to 7, wherein the stopper is provided on a side of a peripheral edge of the plate of the fin. The flow path through which the medium flows has a narrow flow path portion formed narrow.

  In this laminated heat exchanger, the stopper portion has the narrow channel portion provided on the peripheral edge side of the plate of the fin portion and formed with a narrow channel through which the heat exchange medium flows. It is possible to make it difficult for the heat exchange medium to flow into the road, and to stably restrict the flow of the heat exchange medium to the peripheral edge of the plate.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that the diffusivity of a heat exchange medium can be improved and the laminated heat exchanger which can maintain pressure resistance strength can be provided.

It is a front view of the lamination type heat exchanger concerning a 1st embodiment of the present invention. It is a principal part enlarged view of FIG. It is a front view of a plate of a lamination type heat exchanger concerning a 1st embodiment of the present invention. (A) It is a perspective view of the fin when the fin part of the lamination type heat exchanger which concerns on 1st Embodiment of this invention is a straight fin of a mountain shape. (B) is a perspective view of the fin when the fin is a rectangular chevron straight fin. (C) is a perspective view of the fin when the fin portion is an offset fin in which a mountain-shaped flow path is offset. It is a figure which shows the change of the flow ratio with respect to the position of the length direction of the peripheral flow path of the laminated heat exchanger which concerns on 1st Embodiment of this invention. It is a front view of the lamination type heat exchanger concerning a 2nd embodiment of the present invention. It is a front view of the lamination type heat exchanger concerning a 3rd embodiment of the present invention. It is a perspective view of a fin of a fin part of a lamination type heat exchanger concerning a 3rd embodiment of the present invention.

  A laminated heat exchanger according to an embodiment of the present invention will be described with reference to FIGS.

(First embodiment)
The first embodiment will be described with reference to FIGS.

  The stacked heat exchanger 1 according to the present embodiment communicates a plate 3 which is formed in a rectangular shape and a plurality of which are overlapped in a plate thickness direction, and a plurality of plates 3 provided on one side in the length direction of the plate 3. A communication hole 5 for allowing the heat exchange medium to flow between the adjacent plates 3 and 3; and a heat exchange medium provided near the communication hole 5 of the plate 3 and flowing out of the communication hole 5 to one side in the length direction of the plate 3. And a fin portion 9 provided adjacent to the peripheral flow passage 7 of the plate 3 and promoting heat exchange of the heat exchange medium flowing out from the peripheral flow passage 7. .

  Further, in the peripheral flow path 7, a plurality of beads 11 which are extended in an inclined manner with respect to the length direction and the width direction of the plate 3 and have different inclination directions in the adjacent plates 3, 3 are formed.

  The end of the fin portion 9 on the peripheral flow path 7 side is a contact portion P1 where two beads 11A and 11B of the plurality of beads 11 that are in contact with the outer diameter of the communication hole 5 are in contact with the center C of the plate 3 in the width direction. , P2.

  Further, the plurality of beads 11 have different inclination directions on one side and the other side with respect to the center C in the width direction of the plate 3.

  An end of the fin portion 9 on the side of the peripheral flow path 7 is disposed at a contact portion P3 where a bead 11C passing through the center of the communication hole 5 of the plurality of beads 11 is in contact with the center C of the plate 3 in the width direction. .

  Further, between the peripheral channel 7 and the fin 9, a stopper 15 is provided between the peripheral edge 13 of the plate 3 and the fin 9 to regulate the flow of the heat exchange medium flowing out of the peripheral channel 7. Has been.

  The stopper portion 15 has an extended bead portion 17 formed by extending the bead 11 arranged on the fin portion 9 side of the plurality of beads 11 until the bead 11 comes into contact with the peripheral portion 13 of the plate 3.

  Here, the stacked heat exchanger 1 according to the present embodiment is applied to, for example, an air conditioner for a vehicle, and a plurality of plates 3 are stacked and stacked, and a first plate 3 is provided between adjacent plates 3. A refrigerant as a heat exchange medium and a cooling water as a second heat exchange medium are alternately circulated.

  The stacked heat exchanger 1 performs heat exchange between the first heat exchange medium (refrigerant) and the second heat exchange medium (cooling water), and functions as a water-cooled condenser that cools the first heat exchange medium.

  Hereinafter, the details of the stacked heat exchanger 1 will be described with reference to FIGS. 1 to 5.

  As shown in FIGS. 1 to 4, the plurality of plates 3 are made of a plate material formed in a rectangular shape, and the peripheral edge portion 13 is bent toward one surface.

  The plurality of plates 3 are overlapped with each other in the bending direction of the peripheral portion 13 and brazed under pressure from both sides in the stacking direction to form a flow path between the first heat exchange medium and the second heat exchange medium. Are formed alternately.

  The plurality of plates 3 are provided with communication holes 5, peripheral flow paths 7, and fin portions 9.

  The communication hole 5 is provided near each of the four corners 19 of the plate 3 and includes a pair of first medium ports 21 and 21 and a pair of second medium ports 23 and 23.

  The pair of first medium ports 21 and 21 are provided in a circular shape through the plate 3 in the vicinity of the respective corner portions 19 and 19 located on the diagonal line of the plate 3.

  In a state where the plurality of plates 3 are superimposed, the pair of first medium ports 21 and 21 have the same center position of the first medium port 21 of each plate 3, and are arranged in the stacking direction of the plurality of plates 3. Communicated.

  The peripheral portions of the pair of first medium ports 21 and 21 are brazed to one of the adjacent plates 3 and 3 and not brazed to the other plate 3.

  By providing the pair of first medium ports 21 and 21 in this manner, a first flow path 25 through which the first heat exchange medium flows is formed between the plurality of plates 3 on one surface of the plates 3. On the other side of the plate, the first heat exchange medium does not flow.

  For this reason, the first heat exchange medium flows out and in between the pair of first medium ports 21, 21, so that the plurality of plates 3 are superimposed on each other and the plurality of adjacent plates 3, 3. Each set of adjacent plates 3, 3 in which the first flow path 25 is formed is circulated.

  The first heat exchange medium (refrigerant) is supplied to the pair of first medium ports 21 and 21 from one of the first medium ports 21 (here, the communication hole 5 arranged at the upper left in FIG. 1). The first heat exchange medium flowing out of the first flow path 25 and flowing through the first flow path 25 flows into the other first medium port 21 (here, the communication hole 5 disposed at the lower right in FIG. 1). Is done.

  The pair of second medium ports 23, 23 penetrate the plate 3 in the vicinity of the respective corner portions 19, 19 located on a diagonal line of the plate 3 different from the portion where the pair of first medium ports 21, 21 are located. It is provided in a circular shape.

  In a state where the plurality of plates 3 are superimposed, the center positions of the second medium ports 23 of the respective plates 3 coincide with each other, and the pair of second medium ports 23 are aligned in the stacking direction of the plurality of plates 3. Communicated.

  The peripheral portions of the pair of second medium ports 23, 23 are brazed to the plate 3 located on the surface of the adjacent plates 3, 3 on which the first heat exchange medium flows, and opposite thereto. Is not brazed to the plate 3 located on the side of the surface.

  By providing the pair of second medium ports 23 in this manner, the first heat exchange medium flows through the first flow path 25 on one surface of the plate 3 between the plurality of plates 3, A second flow path (a flow path (not shown) formed on the back surface side of the plate 3 shown in FIG. 1), through which the second heat exchange medium flows, is formed on the other surface of the plate.

  For this reason, the second heat exchange medium flows between the pair of second medium ports 23, 23, and in a state where the plurality of plates 3 are superimposed on each other, among the plurality of adjacent plates 3, 3. The first heat exchange medium is circulated every other set between adjacent plates 3 and 3 where the second flow path is not formed.

  The pair of second medium ports 23, 23 are connected to the second heat exchange medium (cooling water) through one of the second medium ports 23 (here, the communication hole 5 arranged at the upper right in FIG. 1). Flows into the second flow path, and the second heat exchange medium flowing through the second flow path flows into the other second medium port 23 (here, the communication hole 5 arranged at the lower left in FIG. 1). .

  In this way, the first heat exchange medium and the second heat exchange medium are alternately circulated through the first flow path 25 and the second flow path formed between the plurality of plates 3, thereby providing the first heat exchange medium. Heat exchange between the medium and the second heat exchange medium can be performed efficiently.

  A peripheral flow path 7 is formed around the communication hole 5 forming the pair of first medium ports 21 and 21 and the pair of second medium ports 23 and 23.

  The peripheral flow path 7 is provided around the communication hole 5 so that the directions of the adjacent plates 3 and 3 are different from each other, and the directions of the adjacent plates 3 and 3 are different from each other. It is composed of a plurality of beads 11 formed by an embossing process.

  The plurality of beads 11 are arranged such that the plurality of beads 11 located in the communication hole 5 from which the heat exchange medium flows out of the plurality of communication holes 5 are arranged such that the plurality of beads 11 extend from the communication hole 5 in the length direction and the width direction of the plate 3. The heat exchange medium flowing out is inclined at a predetermined angle so as to flow toward the center C of the plate 3 in the width direction.

  Specifically, for example, in the plate 3 shown in FIG. 3, the communication hole 5 located at the upper left allows the first heat exchange medium to flow out to the first flow path 25, so that a plurality of communication holes 5 provided around the communication hole 5 are provided. The bead 11 has a predetermined angle with respect to the length direction and the width direction of the plate 3 so that the first heat exchange medium flowing out of the communication hole 5 flows toward the center C in the width direction of the plate 3. It is inclined.

  In this manner, each of the communication holes 5 has a plurality of plates 3 overlapped with each other, with respect to the first channel 25 and the second channel (not shown) formed between the adjacent plates 3. Thus, a communication hole 5 through which the first heat exchange medium and the second heat exchange medium flow is formed.

  For this reason, one plate 3 is provided with peripheral channels 7 on both sides in the length direction, and a plurality of beads 11 formed in the peripheral channel 7 are located at the center in the width direction of the plate 3. C is formed in a V-shape so that the inclination direction is different.

  On the other hand, the peripheral flow path 7 of the plate 3 adjacent to the plate 3 (for example, the plate 3 disposed on the back side of the plate 3 shown in FIG. 1) has a plurality of beads 11 having different inclination directions from the plurality of beads 11 of the adjacent plate 3. Are formed in a V-shape opposite to the plurality of beads 11 of the adjacent plate 3.

  By making the plurality of beads 11 formed on one plate 3 different on one side and the other side in the width direction with the center C in the width direction of the plate 3 as a boundary, the beads 11 flow through the peripheral flow path 7. Since the flow of the heat exchange medium changes at the center C in the width direction of the plate 3, the effect of stirring the heat exchange medium is promoted, and the heat exchange of the heat exchange medium can be improved.

  The plurality of beads 11 forming the peripheral flow path 7 formed in the plate 3 are called a herringbone pattern.

  Since the plurality of beads 11 have different inclination directions between the adjacent plates 3, 3, the first flow path 25 formed between the adjacent plates 3, 3 in a state where the plurality of plates 3 are overlapped. And the second flow path form a network flow path.

  By providing the plurality of beads 11 on the plate 3 as described above, turbulence is generated in the first heat exchange medium and the second heat exchange medium in the first flow path 25 and the second flow path, and high heat exchange efficiency is obtained. be able to.

  Among the plurality of beads 11 constituting such a peripheral flow path 7, the plurality of beads 11 located around the communication hole 5 through which the heat exchange medium flows out are arranged in the length direction and the width direction of the plate 3. The heat exchange medium flowing out of the communication hole 5 is inclined so as to flow toward the center C of the plate 3 in the width direction.

  For this reason, the heat exchange medium flowing out of the communication hole 5 flows toward the center C side in the width direction of the plate 3 along the plurality of beads 11, and the diffusivity of the heat exchange medium can be improved.

  Such a plurality of beads 11 have different inclination directions between the adjacent plates 3 and 3, and are arranged in a mesh shape in a state where the plurality of plates 3 are overlapped.

  The intersection of the plurality of beads 11, 11 of the mesh-like adjacent plates 3, 3 becomes a joint when the plurality of plates 3 are overlapped and brazed, and the joining strength between the adjacent plates 3, 3 is reduced. Therefore, the pressure resistance can be maintained.

  In addition, if the plurality of beads 11 are formed finely and the number thereof is increased, not only the diffusibility of the heat exchange medium is improved, but also the joint between the adjacent plates 3 and 3 is increased, and the joint strength is further increased. And the pressure resistance can be improved.

  The fin portion 9 is provided adjacent to the peripheral flow path 7 including the plurality of beads 11.

  As shown in FIG. 4, for example, the fin portion 9 is formed of a straight fin 9a in which a plurality of flow paths are formed in a mountain shape, a straight fin 9b in which a plurality of flow paths are formed in a rectangular shape, and a rectangular shape. Offset fins 9c in which a plurality of flow paths are offset are arranged.

  The fin portions 9 are arranged adjacent to the peripheral flow path 7 and brazed to the adjacent plates 3 in a state where the plurality of plates 3 are overlapped with each other, so that the fin portions 9 are integrally formed between the plurality of plates 3. Is provided in a standard manner.

  The fin portions 9 allow the heat exchange medium flowing out of the peripheral flow path 7 to flow therein, and promote heat exchange between the first heat exchange medium and the second heat exchange medium flowing between the adjacent plates 3. Let it.

  An end of the fin portion 9 on the peripheral flow path 7 side is a contact portion where two beads 11A and 11B of the plurality of beads 11 that are in contact with the outer diameter of the communication hole 5 are in contact with the center C of the plate 3 in the width direction. It is arranged between P1 and P2.

  Here, the peripheral flow path 7 is sectioned at a predetermined interval in the length direction of the plate 3, and the flow rate of the heat exchange medium in the width direction of the plate 3 at this cross section is measured, and the flow rate ratio between the minimum and maximum flow rates is determined Calculated.

  This means that the closer the flow rate ratio is to 1, the smaller the difference between the minimum and maximum flow rates is, and the better the diffusivity of the heat exchange medium in the width direction of the plate 3 is. This is because it is possible to know at which position in the length direction of the plate 3 of the peripheral flow path 7 the diffusibility of the heat exchange medium is improved.

  FIG. 5 shows a change in the flow rate ratio of the peripheral flow path 7 to the length direction of the plate 3 obtained in this manner.

  In FIG. 5, two beads 11 </ b> A and 11 </ b> B in contact with the outer diameter of the communication hole 5 among a plurality of beads 11 constituting the peripheral flow path 7 correspond to a portion where the flow ratio sharply rises. In the range between the contact portions P1 and P2 that are in contact with the center C.

  Therefore, by disposing the end of the fin portion 9 on the side of the peripheral channel 7 between the contact portions P1 and P2 located at the center C of the plate 3 in the width direction, the diffusivity of the peripheral channel 7 is improved. The fin portion 9 can be arranged in a part that functions effectively.

  In addition, the part where the diffusibility of the heat exchange medium is most improved is that the bead 11C passing through the center of the communication hole 5 among the plurality of beads 11 constituting the peripheral flow path 7 is located at the center C in the width direction of the plate 3. The contact portion P3 was in contact therewith.

  For this reason, in the present embodiment, the end of the fin portion 9 on the side of the peripheral flow path 7 is arranged at the contact point P3 located at the center C in the width direction of the plate 3, and the diffusion of the peripheral flow path 7 The fin portion 9 is arranged in a portion where the property is most functioning.

  By arranging the end of the fin portion 9 on the side of the peripheral flow channel 7 in this way, the heat exchange medium flows out from the peripheral flow channel 7 to the fin portion 9 by efficiently utilizing the diffusivity in the peripheral flow channel 7. And the heat exchange efficiency of the heat exchange medium can be improved.

  Here, if the flow rate of the heat exchange medium between the peripheral portion 13 of the plate 3 and the fin section 9 increases, the flow rate of the heat exchange medium flowing through the fin section 9 decreases, and the heat exchange rate increases. The heat exchange efficiency of the medium is reduced.

  Therefore, between the peripheral channel 7 and the fin portion 9, a stopper portion 15 is provided between the peripheral edge portion 13 of the plate 3 and the fin portion 9 to regulate the flow of the heat exchange medium flowing out of the peripheral channel 7. Has been.

  The stopper portion 15 includes an extended bead portion 17 formed by extending the bead 11 arranged on the fin portion 9 side of the plurality of beads 11 until it comes into contact with the peripheral portion 13 of the plate 3.

  The stretched bead portions 17 are provided on adjacent plates 3 and 3, respectively, and in a state where a plurality of plates 3 are overlapped, the adjacent stretch bead portions 17 and 17 are joined to each other by brazing, and the heat exchange medium is stretched. It restricts circulation between the bead portions 17.

  By providing the stopper portion 15 including the stretched bead portion 17 in this manner, the heat exchange medium can be restricted from flowing to the peripheral portion 13 side of the plate 3, and the heat exchange medium can be stably distributed to the fin portion 9. And the heat exchange efficiency of the heat exchange medium can be improved.

  In addition, by using the extended bead portions 17 formed in the plurality of beads 11 constituting the peripheral flow path 7 as the stopper portions 15, the shape of the fin portions 9 and the shape of the peripheral edge portion 13 of the plate 3 are not changed. The flow of the heat exchange medium between the peripheral portion 13 of the plate 3 and the fin portion 9 can be restricted.

  In such a laminated heat exchanger 1, a plurality of beads 11, which extend in an inclined manner with respect to the length direction and the width direction of the plate 3 and have different inclination directions in the adjacent plates 3, 3, are formed in the peripheral flow path 7. Is formed, the heat exchange medium flowing out of the communication hole 5 flows out to the fin portion 9 while being diffused in the width direction of the plate 3 along the plurality of beads 11 formed at an angle, and the heat exchange medium Can be improved.

  In addition, since the plurality of beads 11 have different inclination directions between the adjacent plates 3, 3, when the plurality of plates 3 are overlapped, the intersection between the beads 11, 11 of the adjacent plates 3, 3 becomes a joint. When the number of the beads 11 is increased, the junction between the beads 11, 11 is increased while improving the diffusivity of the heat exchange medium, the bonding strength between the adjacent plates 3, 3 is increased, and the pressure resistance is reduced. Can be improved.

  Therefore, in such a laminated heat exchanger 1, the diffusibility of the heat exchange medium can be improved, and the pressure resistance can be maintained.

  The end of the fin portion 9 on the peripheral flow path 7 side is a contact portion P1 where two beads 11A and 11B of the plurality of beads 11 that are in contact with the outer diameter of the communication hole 5 are in contact with the center C of the plate 3 in the width direction. , P2, the heat exchange medium can flow out from the peripheral channel 7 to the fin portion 9 by efficiently utilizing the diffusivity in the peripheral channel 7.

  Further, since the plurality of beads 11 have different inclination directions on one side and the other side with respect to the center C in the width direction of the plate 3, the flow of the heat exchange medium flowing through the peripheral flow path 7 is in the width direction of the plate 3. It changes at the center C, the stirring effect is promoted, and the heat exchange of the heat exchange medium can be improved.

  An end of the fin portion 9 on the side of the peripheral flow path 7 is disposed at a contact portion P3 where a bead 11C passing through the center of the communication hole 5 of the plurality of beads 11 is in contact with the center C of the plate 3 in the width direction. Therefore, the heat exchange medium can flow out from the peripheral channel 7 to the fin portion 9 by making the most of the diffusivity in the peripheral channel 7.

  Further, between the peripheral channel 7 and the fin 9, a stopper 15 is provided between the peripheral edge 13 of the plate 3 and the fin 9 to regulate the flow of the heat exchange medium flowing out of the peripheral channel 7. As a result, the heat exchange medium can be restricted from flowing through the peripheral portion 13 of the plate 3, the heat exchange medium can be distributed through the fin portions 9, and the heat exchange efficiency of the heat exchange medium can be improved. .

  In addition, the stopper portion 15 has the extended bead portion 17 formed by extending the bead 11 arranged on the fin portion 9 side of the plurality of beads 11 until the bead 11 comes into contact with the peripheral edge portion 13 of the plate 3, so that the stopper portions 15 are adjacent to each other. By joining the extending bead portions 17 of the plates 3, 3, it is possible to stably restrict the flow of the heat exchange medium to the peripheral portion 13 of the plate 3.

(Second Embodiment)
The second embodiment will be described with reference to FIG.

  The stacked heat exchanger 101 according to the present embodiment has a concave portion 103 formed by recessing the stopper portion 15 until the peripheral portion 13 of the plate 3 contacts the fin portion 9.

  The same components as those in the first embodiment are denoted by the same reference numerals, and the description of the configurations and functions will be omitted by referring to the first embodiment. The effect obtained is the same.

  As shown in FIG. 6, the stopper portion 15 is formed in the peripheral portion 13 of the plate 3, and is recessed until the peripheral portion 13 of the plate 3 located in the length direction of the fin portion 9 contacts the fin portion 9. 103.

  The concave portion 103 abuts on the fin portion 9 to fill a gap between the peripheral portion 13 of the plate 3 and the fin portion 9, and the heat exchange medium flows between the peripheral portion 13 of the plate 3 and the fin portion 9. Regulate that.

  By using the recess 103 provided in the plate 3 as the stopper 15 in this manner, the peripheral edge of the plate 3 can be changed without changing the shape of the plurality of beads 11 and the shape of the fin 9 constituting the peripheral flow path 7. The flow of the heat exchange medium between the fin portion 9 and the fin portion 9 can be restricted.

  In such a laminated heat exchanger 101, since the stopper portion 15 has the concave portion 103 formed by being recessed until the peripheral portion 13 of the plate 3 comes into contact with the fin portion 9, the stopper portion 15 and the peripheral portion 13 of the plate 3 The gap with the portion 9 can be filled with the concave portion 103, and the flow of the heat exchange medium through the peripheral portion 13 of the plate 3 can be regulated stably.

(Third embodiment)
A third embodiment will be described with reference to FIGS.

  In the stacked heat exchanger 201 according to the present embodiment, the stopper portion 15 is provided on the peripheral portion 13 side of the plate 3 of the fin portion 9, and the narrow channel portion in which the channel through which the heat exchange medium flows is formed narrow. 203.

  The same components as those of the other embodiments are denoted by the same reference numerals, and the descriptions of the configurations and functions are omitted by referring to the other embodiments. The effect obtained is the same.

  As shown in FIGS. 7 and 8, the stopper portion 15 is provided on the peripheral edge 13 side of the plate 3 of the fin 9 d (in this case, a straight fin having a plurality of chevron-shaped flow paths) constituting the fin portion 9. And a narrow channel portion 203 formed so that the channel through which the heat exchange medium flows is narrowed.

  The narrow flow path portion 203 is formed such that by applying pressure to the fins 9d inward in the width direction, the flow paths of the heat exchange media located on both sides in the width direction of the fins 9d are narrowed.

  Since the heat exchange medium is less likely to flow into such a narrow flow path 203, the heat exchange medium is less likely to flow to the fin section 9 on the side of the peripheral section 13 of the plate 3, and the fin section 9 and the peripheral section 13 of the plate 3 The circulation of the heat exchange medium with the part 9 can be restricted.

  By using the narrow channel portion 203 provided in the fin portion 9 as the stopper portion 15 in this manner, the shape of the plurality of beads 11 constituting the peripheral channel 7 and the shape of the peripheral portion 13 of the plate 3 can be changed. In addition, the flow of the heat exchange medium between the peripheral portion 13 of the plate 3 and the fin portion 9 can be restricted.

  In such a laminated heat exchanger 201, the stopper portion 15 has the narrow channel portion 203 provided on the peripheral portion 13 side of the plate 3 of the fin portion 9 and formed with a narrow channel through which the heat exchange medium flows. Therefore, it is possible to make it difficult for the heat exchange medium to flow into the narrow flow path portion 203, and to stably restrict the heat exchange medium from flowing through the peripheral portion 13 of the plate 3.

  Note that, in the stacked heat exchanger according to the embodiment of the present invention, the fin portion is formed as a straight fin having a channel formed in a mountain shape, a straight fin having a channel formed in a rectangular mountain shape, or a rectangular ridge shape. The formed flow path is formed by offset fins or the like, but the invention is not limited to this, and any form of fin portion may be used as long as heat exchange of the heat exchange medium can be promoted. Good.

  Further, as the stopper portion, the extending bead portion, the concave portion, and the narrow channel portion are provided independently of each other, but the invention is not limited thereto. For example, as the stopper portion, the extending bead portion and the narrow channel portion are combined. The stopper portion may have a plurality of configurations in combination, such as a configuration provided by a stopper.

1, 101, 201: laminated heat exchanger 3: plate 5, communication hole 7, peripheral flow path 9, fin 11: bead 13, peripheral part 15, stopper 17, extended bead 103, concave 203, narrow flow Road

Claims (8)

A plate (3) which is formed in a rectangular shape and a plurality of which are overlapped in the plate thickness direction, and a plate (3) provided on one side in the length direction of the plate (3) and communicating with the plurality of plates (3) , 3) between the communication hole (5) through which the heat exchange medium flows out, and the plate (3), which is provided near the communication hole (5) and flows out from the communication hole (5) through the plate. (3) a peripheral channel (7) flowing from one side to the other side in the longitudinal direction, and the peripheral channel (7) provided adjacent to the peripheral channel (7) of the plate (3). And fins (9) for promoting heat exchange of the heat exchange medium flowing out of the stack heat exchanger (1, 101, 201),
In the peripheral flow path (7), a plurality of beads (11) extending obliquely with respect to the length direction and the width direction of the plate (3) and having different inclination directions in adjacent plates (3, 3). A stacked heat exchanger (1, 101, 201) characterized in that a heat exchanger is formed. The laminated heat exchanger (1, 101, 201) according to claim 1, wherein:
At the end of the fin portion (9) on the side of the peripheral flow path (7), two beads (11A, 11B) of the plurality of beads (11) that are in contact with the outer diameter of the communication hole (5) are formed. A laminated heat exchanger (1, 101, 201), which is arranged between contact points (P1, P2) in contact with a center (C) in the width direction of a plate (3). The stacked heat exchanger (1, 101, 201) according to claim 1 or 2,
The plurality of beads (11) have different inclination directions on one side and the other side with respect to a center (C) in the width direction of the plate (3). , 201). The stacked heat exchanger (1, 101, 201) according to any one of claims 1 to 3, wherein
An end of the fin portion (9) on the side of the peripheral flow path (7) has a bead (11C) passing through the center of the communication hole (5) among the plurality of beads (11). A stacked heat exchanger (1, 101, 201), which is arranged at a contact portion (P3) in contact with a center (C) in the width direction. The stacked heat exchanger (1, 101, 201) according to any one of claims 1 to 4, wherein
Between the peripheral channel (7) and the fin portion (9), between the peripheral portion (13) of the plate (3) and the fin portion (9) from the peripheral channel (7). A stacked heat exchanger (1, 101, 201), comprising a stopper (15) for regulating the flow of the heat exchange medium flowing out. The laminated heat exchanger (1, 101, 201) according to claim 5,
The stopper portion (15) is extended until a bead (11) arranged on the fin portion (9) side of the plurality of beads (11) comes into contact with a peripheral portion (13) of the plate (3). A laminated heat exchanger (1), characterized by having a stretch bead portion (17) formed by heating. The stacked heat exchanger (1, 101, 201) according to claim 5 or 6, wherein
The said stopper part (15) has the recessed part (103) formed by making the peripheral part (13) of the said plate (3) abut on the said fin part (9), The lamination type heat characterized by the above-mentioned. Exchanger (101). The stacked heat exchanger (1, 101, 201) according to any one of claims 5 to 7, wherein:
The stopper portion (15) is provided on the peripheral edge portion (13) of the plate (3) of the fin portion (9) and has a narrow channel portion (203) formed with a narrow channel through which a heat exchange medium flows. A stacked heat exchanger (201), comprising:

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