JP5947959B1 - Heat transfer plate for plate heat exchanger and plate heat exchanger equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the heat exchange efficiency between a first fluid and a second fluid by making the circulation state of a first fluid and the circulation state of a second fluid uniform. A plate body having a pair of end regions on both sides of an intermediate region includes a first seal planned portion surrounding a first opening on a first surface and a second seal surrounding a second opening on a second surface. A first projecting portion extending in a direction intersecting the center line in a region in the immediate vicinity of the first opening in the intermediate region of the first flow channel planned region, and a first opening in the intermediate region of the first flow channel planned region A second convex portion arranged in a distant region and having a larger angle than the first convex portion, and a region intersecting the center line in a region immediately adjacent to the second opening in an intermediate region of the second flow path planned region A fourth convex portion that is disposed in a region far from the second opening in the intermediate region of the second flow path planned region and has an angle with respect to the center line that is larger than the third convex portion. Prepare. [Selection] Figure 1

Description

  The present invention defines a first fluid that circulates in a first channel and a second fluid that circulates in a second channel while partitioning a first channel that circulates a first fluid and a second channel that circulates a second fluid. The present invention relates to a heat transfer plate for a plate-type heat exchanger that exchanges heat with each other, and a plate-type heat exchanger provided with the same.

  Conventionally, a plate-type heat exchanger has been provided as one of heat exchangers that exchange heat between a first fluid and a second fluid. As shown in FIG. 11, the plate heat exchanger includes a plurality of heat transfer plates 1 stacked in one direction, and a first flow path P1 through which the first fluid A is circulated with the heat transfer plate 1 as a boundary. Second flow paths P2 for circulating the two fluids B are alternately formed in one direction.

  Each heat transfer plate 1 is formed by press-molding a metal plate, and includes a plate body 10 that divides a first flow path P1 through which the first fluid A flows and a second flow path P2 through which the second fluid B flows. .

  As shown in FIGS. 12 and 13, the plate body 10 has a first surface S1 in the first direction and a second surface S2 facing away from the first surface S1. The plate body 10 includes the intermediate region CA including the first surface S1 and the second surface S2, and the intermediate region CA in the second direction including the first surface S1 and the second surface S2 and orthogonal to the first direction. A pair of end regions EA and EA that are continuous with the intermediate region CA are included.

  On the premise of this, the plate main body 10 has two first openings 11 and 11 penetrating the pair of end regions EA and EA in the first direction, and the same region in each of the pair of end regions EA and EA. Two second openings that are spaced apart in a first direction and a third direction orthogonal to the second direction with respect to the first opening 11 inside and that penetrate each of the pair of end regions EA, EA in the first direction. The contour of the first flow path P1 that surrounds the two first openings 11 and 11 in the pair of end regions EA and EA on the first surface S1 and circulates the first fluid A at the first surface S1. The first seal scheduled portion 13 for determining the second seal 12 and the two second openings 12 and 12 in the pair of end regions EA and EA on the second surface S2 are collectively surrounded and the second fluid B is circulated. The second seal scheduled portion 14 that determines the contour of the two flow paths P2, and the second area of the intermediate area CA Surface S1 and a plurality of ridges 23 ... and arranged in each of the entire region of the second surface S2 concave comprises 24 ... and (for example, see Patent Document 1).

  In each of the pair of end regions EA, EA, the first opening 11 and the second opening 12 in the same region are arranged symmetrically with respect to the longitudinal center line CL1 extending in the second direction. Further, the first opening 11 and the second opening 12 in one end area EA of the pair of end areas EA, EA and the other end area EA of the pair of end areas EA, EA. The certain 1st opening 11 and the 2nd opening 12 are symmetrically arrange | positioned on the basis of the horizontal centerline CL2 extended in a 3rd direction.

  Regions surrounded by the first planned seal portion 13 and the second planned seal portion 14 respectively (first flow channel planned region PP1 that defines the first flow channel P1 and second flow channel planned region PP2 that defines the second flow channel P2. ) Are formed so as to expand in the third direction toward the intermediate area CA in each of the pair of end areas EA and EA, maximize in the intermediate area CA, and overlap at least in the intermediate area CA.

  The ridges 23 and the ridges 24 continuously extend from the end (one end and the other end) of the plate body 10 in the third direction to the longitudinal center line CL1, and the longitudinal center line CL1 and the lateral center line. It is inclined at a predetermined angle with respect to CL2. The ridges 23 and the ridges 24 are alternately arranged in a direction perpendicular to the longitudinal direction.

  The plurality of heat transfer plates 1 having the above-described configuration are stacked in one direction with the plate bodies 10 facing each other. Specifically, as shown in FIG. 11, each of the heat transfer plates 1... Has a first surface S1 of the plate body 10 of the heat transfer plate 1 that is adjacent to the first surface S1 of the plate body 10 on one side in one direction. And the second surface S2 of the plate body 10 is opposed to the second surface S2 of the plate body 10 of the adjacent heat transfer plates 1 on the other side in one direction. Thereby, the 1st surface of the plate main body 10 of the heat-transfer plate 1 ... which the 1st seal plan part 13 on the 1st surface S1 of the plate main body 10 of each heat-transfer plate 1 ... adjoins by the one side of one direction. The second seal planned portion 14 on the second surface S2 of the plate body 10 of each heat transfer plate 1 is on the other side in one direction while facing the first seal planned portion 13 on S1. It will be in the state which opposed the 2nd scheduled seal part 14 on the 2nd surface S2 of the plate main body 10 of adjacent heat-transfer plate 1 ....

  Accordingly, the first flow path P1 is sealed between the first seal planned portions 13 of the adjacent heat transfer plates 1... And the first seal planned portion 13 is defined between the plate main bodies 10 of the adjacent heat transfer plates 1. Is formed, the space between the second seal planned portions 14 of the adjacent heat transfer plates 1 is sealed, and the second seal planned portion 14 is outlined between the plate main bodies 10 of the adjacent heat transfer plates 1. A flow path P2 is formed. That is, the first flow path P1 and the second flow path P2 are alternately formed with each heat transfer plate 1 as a boundary.

  In addition, one of the two first openings 11, 11 of the plurality of heat transfer plates 1 is connected in one direction to form a first inflow path P1a that allows the first fluid A to flow into the first flow path P1. At the same time, one of the two first openings 11, 11 of the plurality of heat transfer plates 1 is connected to form a first outflow path P1b through which the first fluid A flows out from the first flow path P1. The Furthermore, any one of the two second openings 12 and 12 of the plurality of heat transfer plates 1 is connected to form a second inflow path P2a for allowing the second fluid B to flow into the second flow path P2. At the same time, either one of the two second openings 12 and 12 of the plurality of heat transfer plates 1 is connected to form a second outflow path P2b through which the second fluid B flows out from the second flow path P2. The

  Thereby, in the plate heat exchanger HE having the above-described configuration, the first fluid A from the first inflow path P1a flows through the first flow path P1 and flows out to the first outflow path P1b, while from the second inflow path P2a. The second fluid B flows through the second flow path P2 and flows out to the second outflow path P2b. Thus, in this type of plate heat exchanger HE, the first fluid A flowing through the first flow path P1 and the second fluid B flowing through the second flow path P2 exchange heat via the heat transfer plate 1. It is like that.

  And this kind of plate-type heat exchanger HE makes the first flow path P1 wide in the surface area that the plurality of ridges 23 ... and the ridges 24 ... in the intermediate area CA of the heat transfer plates 1 ... contribute to heat transfer. The heat exchange performance between the first fluid A and the second fluid B is enhanced by giving flow resistance to the first fluid A flowing in the second fluid B and the second fluid B flowing in the second flow path P2.

JP 2002-107084 A

  By the way, in this type of plate heat exchanger HE, as shown in FIG. 14, the first flow path P1 collectively surrounds the two first openings 11 and 11 on the first surface S1 of the plate body 10. The first seal scheduled portion 13 that defines the maximum area in the intermediate area CA of the plate body 10 is contoured.

  Accordingly, the first fluid A flowing into the first flow path P1 from the first inflow path P1a spreads in the third direction toward the intermediate area CA in the first flow path P1 and then flows in the second direction. Then, it narrows from the intermediate area CA toward the first outflow path P1b and flows out from the first outflow path P1b.

  That is, the first flow path P1 includes a path R1 that flows in the second direction and reaches the intermediate area CA immediately after the first fluid A flows into the first flow path P1 from the first inflow path P1a, and the first fluid A is the first flow A. Immediately after flowing into the first flow path P1 from the one inflow path P1a, it flows in the third direction, then flows in the second direction and reaches the intermediate area CA, and the first fluid A flows from the intermediate area CA to the second direction. And the path R3 flowing out to the first outflow path P1b and the path R4 flowing in the third direction after the first fluid A flows in the second direction in the intermediate area CA and outflowing to the first outflow path P1b. That is, there are paths having different flow distances of the first fluid A in the first flow path P1.

  Therefore, even if it is the 1st fluid A which flowed into the 1st flow path P1 from the 1st inflow path P1a at the same timing, it will flow out from the 1st flow path P1 to the 1st outflow path P1b at a different timing. That is, the stay time of the first fluid A varies depending on the flow path of the first fluid A in the first flow path P1. Therefore, the heat exchange state with the second fluid B flowing through the second flow path P2 varies depending on the flow path of the first fluid A within the first flow path P1.

  Further, as shown in FIG. 15, the second flow path P <b> 2 collectively surrounds the two second openings 12, 12 on the second surface S <b> 2 of the plate body 10 and is maximum in the intermediate area CA of the plate body 10. The second planned seal portion 14 that defines the region to be formed is the outline.

  Accordingly, the second fluid B that has flowed into the second flow path P2 from the second inflow path P2a spreads in the third direction toward the intermediate area CA in the second flow path P2 and then toward the second direction. And then flows out from the second outflow path P2b, narrowing from the intermediate area CA toward the second outflow path P2b.

  That is, the second flow path P2 includes a path R1 ′ that flows in the second direction and reaches the intermediate area CA immediately after the second fluid B flows into the second flow path P2 from the second inflow path P2a, and the second fluid P2. Immediately after B flows into the second flow path P2 from the second inflow path P2a, it flows in the third direction, then flows in the second direction and reaches the intermediate area CA, and the second fluid B is in the intermediate area. The path R3 ′ flowing from the CA in the second direction and flowing out to the second outflow path P2b, and the second fluid B flowing in the second direction in the intermediate area CA and then flowing in the third direction to the second outflow path P2b And outflow route R4 ′. That is, there are paths having different flow distances of the second fluid B in the second flow path P2.

  Therefore, even if it is the 2nd fluid B which flowed into the 2nd flow path P2 from the 2nd inflow path P2a at the same timing, it will flow out from the 2nd flow path P2 to the 2nd outflow path P2b at a different timing. That is, a difference occurs in the residence time of the second fluid B depending on the flow path of the second fluid B in the second flow path P2. Therefore, the heat exchange state with the first fluid A flowing through the first flow path P1 differs depending on the flow path of the second fluid B within the second flow path P2.

  As a result, in the conventional plate heat exchanger HE (heat transfer plate 1...) Having the above configuration, the first fluid A flowing through the first flow path P1 and the second fluid B flowing through the second flow path P2 are efficiently used. There is a limit to heat exchange.

  Therefore, the present invention aims to equalize the flow state of the first fluid in the first flow path and the flow state of the second fluid in the second flow path, and to exchange heat between the first fluid and the second fluid. It is an object of the present invention to provide a heat transfer plate for a plate heat exchanger and a plate heat exchanger including the same.

  A heat transfer plate for a plate heat exchanger according to the present invention is a plate body that divides a first flow path for flowing a first fluid and a second flow path for flowing a second fluid, and is arranged in a first direction. One surface and a second surface opposite to the first surface, and an intermediate region including the first surface and the second surface; a first surface and the second surface; and perpendicular to the first direction A plate body having a pair of end regions continuous with the intermediate region on both sides of the intermediate region in the second direction, the plate body having two first ends penetrating each of the pair of end regions in the first direction; The opening and the pair of end regions are spaced from each other in the third direction perpendicular to the first direction and the second direction with respect to the first opening in the same region, and each of the pair of end regions is defined in the first direction. Two second openings penetrating in one direction and two in a pair of end regions on the first surface Firstly enclosing one opening and demarcating a first flow path planned region that expands in the third direction and reaches the maximum in the intermediate region as it goes to the intermediate region in each of the pair of end regions on the first surface. Encloses the planned seal portion and the two second openings in the pair of end regions on the second surface in a lump, and the third direction toward the intermediate region in each of the pair of end regions on the second surface A second seal planned portion that defines a second flow path planned area that expands to the maximum in the intermediate area and overlaps the first flow path planned area on the first surface at least in the intermediate area, A region in the vicinity of the boundary with each of the pair of end regions in the intermediate region, at least in a region in the immediate vicinity of each of the pair of first openings in the intermediate region, and with respect to a lateral center line extending in the third direction Extending in the crossing direction and lateral center A plurality of first protrusions that form a predetermined angle with respect to the boundary between the first flow path planned region and each of the pair of end regions in the intermediate region, and the pair of first protrusions in the intermediate region A plurality of second protrusions that are at least arranged in regions far from the opening, extend in a direction intersecting the horizontal center line, and have an angle with respect to the horizontal center line that is larger than the first protrusion; Of the second flow path planned region, the region in the vicinity of the boundary with each of the pair of end regions in the intermediate region, at least disposed in the region in the immediate vicinity of each of the pair of second openings in the intermediate region, A plurality of third protrusions extending in a direction intersecting the horizontal center line extending in three directions and forming a predetermined angle with respect to the horizontal center line, and a pair of ends in the intermediate region among the second flow path planned regions Boundary with each subregion It is a nearby region and is disposed at least in a region far from each of the pair of second openings in the intermediate region, extends in a direction intersecting the lateral center line, and has an angle with respect to the lateral center line. And a plurality of fourth convex portions having a larger angle.

  When constructing a plate heat exchanger, a plurality of the heat transfer plates having the above-described configuration are stacked in one direction. At this time, the first surface of the plate body of the heat transfer plate is opposed to the first surface of the plate body of another heat transfer plate adjacent on one side, and the second surface of the plate body of the heat transfer plate is on the other side. It opposes the 2nd surface of the plate main body of another heat-transfer plate adjacent by.

  Thereby, since the first seal scheduled portions of the adjacent heat transfer plates are opposed to each other with the first surfaces facing each other, the first sealed planned portion (seal portion) is sealed by sealing between the overlapping first sealed planned portions. ) Is formed as a contour. Therefore, the first flow path becomes a flow path that expands from both sides in the second direction (in each of the pair of end regions) toward the intermediate region in accordance with the form of the first seal planned portion.

  In addition, the first opening in any one of the pair of end regions of the plurality of heat transfer plates is continuous, so that the first fluid flows into the first channel by communicating with only the first channel. The first opening in either one of the pair of end regions of the plurality of heat transfer plates is continuous, so that the first fluid from the first flow channel is allowed to flow out by communicating with only the first flow channel. It becomes one outflow path.

  The heat transfer plate having the above-described configuration is a region in the vicinity of the boundary with each of the pair of end regions in the intermediate region in the first flow path planned region, and is closest to each of the pair of first openings in the intermediate region. A plurality of first protrusions arranged at least in a region extending in a direction intersecting the lateral center line extending in the third direction and forming a predetermined angle with respect to the lateral center line; Of these, the intermediate region is a region in the vicinity of the boundary between each of the pair of end regions, and is disposed at least in a region far from each of the pair of first openings in the intermediate region, and intersects the horizontal center line. A plurality of second protrusions extending in a direction and having an angle with respect to the horizontal center line larger than that of the first protrusion.

  As a result, in the first flow path formed by the seal against the first seal planned portion, the first convex portion exists in the area closest to the first inflow path and the first outflow path (first opening) in the intermediate area, The first convex portion has an angle with respect to the horizontal center line in a region that is arranged in the third direction with respect to the region where the convex portion exists and is far from the first inflow channel and the first outflow channel (first opening) in the intermediate region. A second convex portion (a second convex portion that reduces the resistance of the flow of the first fluid in the second direction as compared with the first convex portion) is present.

  As a result, the flow resistance of the first fluid in the flow path (the flow path including the path through which the first fluid flows in the third direction) in which the distance from the first inflow path to the first outflow path becomes long is reduced.

  That is, the flow rate of the first fluid in the intermediate region far from the first inflow passage is higher than the flow velocity of the first fluid in the intermediate region in the immediate vicinity of the first inflow passage, and the first outflow passage The flow rate of the first fluid in the intermediate region far from the first outflow path is higher than the flow rate of the first fluid in the intermediate region in the immediate vicinity.

  Therefore, even if the length of the flow path of the first fluid in the first flow path is different, the flow path (the first fluid flows in the second direction) that increases the distance from the first inflow path to the first outflow path. The difference between the flow time of the first fluid in the flow path including the flow path) and the flow time of the first fluid in the flow path having a short distance from the first inflow path to the first outflow path is the same or Thus, the flow state of the first fluid in the first flow path is made uniform.

  Furthermore, since the second seal scheduled portions of the heat transfer plates adjacent to each other with the second surfaces facing each other overlap, the second sealed planned portion (seal portion) is sealed by sealing between the overlapping second sealed planned portions. A second flow path having an outline is formed. Therefore, the second flow path becomes a flow path that expands from both sides in the second direction (in each of the pair of end regions) toward the intermediate region in accordance with the form of the second planned seal portion.

  Further, the second opening in any one of the pair of end regions of the plurality of heat transfer plates is continuous, so that the second fluid is allowed to flow into the second flow path only in communication with the second flow path. The second fluid flow from the second flow path is communicated with only the second flow path by connecting the second opening in either one of the pair of end regions of the plurality of heat transfer plates. It becomes the 2nd outflow passage which makes the outflow.

  And the heat transfer plate having the above configuration is a region in the vicinity of the boundary with each of the pair of end regions in the intermediate region in the second flow path planned region, and each of the pair of second openings in the intermediate region A plurality of third convex portions arranged at least in the nearest region, extending in a direction intersecting the horizontal center line extending in the third direction, and forming a predetermined angle with respect to the horizontal center line; Among the regions, the region in the vicinity of the boundary with each of the pair of end regions in the intermediate region, and disposed at least in the region far from each of the pair of second openings in the intermediate region, with respect to the lateral center line A plurality of fourth protrusions extending in the intersecting direction and having an angle with respect to the horizontal center line larger than that of the third protrusion.

  Thereby, in the second flow path formed by the seal against the second seal planned portion, the third convex portion exists in the immediate area with respect to the second inflow path and the second outflow path (second opening) in the intermediate area, The angle with respect to the lateral center line is the first in the region that is aligned in the third direction with respect to the region where the third convex portion exists and is far from the second inflow channel and the second outflow channel (second opening) in the intermediate region. There will be a fourth convex portion that forms an angle larger than the three convex portions (fourth convex portion that reduces the resistance of the second fluid flow in the second direction compared to the second convex portion).

  As a result, the flow resistance of the second fluid in the flow path (the flow path including the path through which the second fluid flows in the third direction) in which the distance from the second inflow path to the second outflow path becomes long is reduced.

  That is, the flow rate of the second fluid in the intermediate region far from the second inflow passage is higher than the flow velocity of the second fluid in the intermediate region in the immediate vicinity of the second inflow passage, and the second outflow The flow rate of the second fluid in the intermediate region far from the second outflow channel is higher than the flow rate of the second fluid in the intermediate region in the immediate vicinity of the path.

  Therefore, even if the length of the flow path of the second fluid in the second flow path is different, the flow path that the distance from the second inflow path to the second outflow path becomes long (the second fluid is in the second direction The difference between the flow time of the second fluid in the flow path including the flow path of the second fluid and the flow time of the second fluid in the flow path having a short distance from the second inflow path to the second outflow path is small. Or it becomes the same and the distribution | circulation state of the 2nd fluid in a 2nd flow path is equalized.

  Thus, according to the heat transfer plate of the said structure, the 1st flow path and the 2nd flow path which equalized the distribution | circulation state of the 1st fluid and the 2nd fluid could be formed, and, as a result, the heat exchange efficiency was improved. A plate heat exchanger can be constructed.

  As one aspect of the present invention, the first opening and the second opening in each of the pair of end regions are arranged symmetrically with respect to the horizontal center line, and the first opening and the same in the same end region The second opening is disposed symmetrically with respect to the longitudinal center line extending in the second direction, the plurality of first protrusions on the first surface is disposed between the plurality of fourth protrusions on the second surface, The plurality of second convex portions on the first surface are preferably disposed between the plurality of third convex portions on the second surface. If it does in this way, the 1st convex part and the 4th convex part will be the arrangement | positioning with a corresponding relationship, and the 2nd convex part and the 3rd convex part will be the arrangement | positioning with a corresponding relationship. Therefore, the fluid flow state on the first surface side (first flow path) and the second surface side (second flow path) is made uniform.

  As another aspect of the present invention, the plate body may be formed by press molding, and the back side of each of the first convex portion, the second convex portion, the third convex portion, and the fourth convex portion may be a concave portion. . If it does in this way, in addition to each convex surface of a 1st convex part, a 2nd convex part, a 3rd convex part, and a 4th convex part, a plate main body will have a concave surface of each back side. Therefore, the surface area that contributes to heat transfer is increased, and the heat transfer performance is enhanced.

  Further, as another aspect of the present invention, the plate body is a region in the vicinity of the boundary with each of the pair of end regions in the intermediate region of the first flow path planned region, and the first opening in the intermediate region At least in a region between a region closest to the first opening and a region far from the first opening, extending in a direction intersecting the horizontal center line and having an angle with respect to the horizontal center line A plurality of fifth convex portions that are larger than the second convex portion and an area near the boundary between each of the pair of end regions in the intermediate region of the second flow path planned region. , At least in a region between the region closest to the second opening in the intermediate region and the region far from the second opening, extending in a direction intersecting the transverse center line, and The angle to the center line is more than the third convex part Listen, may further comprise a plurality of sixth convex portion which forms a smaller angle than the fourth convex portion.

  In this way, in the first flow path, the flow path including the path through which the first fluid flows from the first inflow path (first opening) toward the area closest to the intermediate area, and the first inflow path ( A flow path between the first opening) and a flow path including a path through which the first fluid flows from the first area toward the farther area in the intermediate area, and a first outflow path (first opening) from the area closest to the intermediate area ) Between the flow path including the path through which the first fluid flows and the flow path including the path through which the first fluid flows from the area far from the intermediate area toward the first outflow path (first opening). In the distribution path, there is a fifth convex portion that generates a distribution resistance that is smaller than the distribution resistance due to the first protrusion and greater than the distribution resistance due to the second protrusion. Thereby, in the first flow path, a rapid change in the flow resistance of the first fluid in the third direction is suppressed.

  Further, in the second flow path, a flow path including a path through which the second fluid flows from the second inflow path (second opening) toward the area closest to the intermediate area, and the second inflow path (second opening) ) To the second outflow path (second opening) from the flow path between the flow path including the flow path through which the second fluid flows toward the far region in the intermediate region, and from the region closest to the intermediate region Between the flow path including the path through which the second fluid flows toward the flow path and the flow path including the path through which the second fluid flows from the area far from the intermediate area toward the second outflow path (second opening) In the path, there is a sixth convex portion that causes a flow resistance smaller than the flow resistance due to the third convex portion and larger than the flow resistance due to the fourth convex portion. Thereby, in the second flow path, a rapid change in the flow resistance of the second fluid in the third direction is suppressed.

  Therefore, in each of the first flow path and the second flow path, the flow state of the fluid is made more uniform, so that better heat exchange performance is exhibited.

  The plate heat exchanger of the present invention includes a plurality of heat transfer plates for any of the above plate heat exchangers, and the heat transfer plates for the plurality of plate heat exchangers are stacked in one direction, The first surface of the plate body in the heat transfer plate for the plate heat exchanger adjacent on the side faces each other, and the second surface of the plate body in the heat transfer plate for the plate heat exchanger adjacent on the other side in one direction A first flow path is formed to allow the first fluid to flow by allowing the first fluid seals to flow between the opposing first seal scheduled portions, and for the second fluid to flow through the sealed second sealed seal portions. A second flow path is formed.

  According to this plate type heat exchanger, since the heat transfer plate for the plate type heat exchanger is provided, the above-described operations and effects can be achieved.

  As described above, according to the present invention, the fluid circulation state in each of the first channel and the second channel can be made uniform, and as a result, the excellent effect that the heat exchange efficiency can be improved. Can be played.

FIG. 1 is a schematic exploded perspective view of a plate heat exchanger including a heat transfer plate for a plate heat exchanger according to an embodiment of the present invention. FIG. 2: is the top view seen from the 1st surface side of the heat exchanger plate for plate type heat exchangers concerning the embodiment. FIG. 3: is the top view seen from the 2nd surface side of the heat exchanger plate for plate type heat exchangers concerning the embodiment. FIG. 4 is a state in which a plate heat exchanger is constructed with the heat transfer plate for the plate heat exchanger according to the embodiment, and the first convex portion in the first flow path formed by the adjacent heat transfer plates FIG. 10 is an explanatory diagram for explaining the arrangement relationship between the second convex portion and the fifth convex portion. FIG. 5 shows a state in which a plate heat exchanger is constructed with the heat transfer plate for the plate heat exchanger according to the embodiment, and the third protrusion in the second flow path formed by the adjacent heat transfer plates. It is explanatory drawing in order to demonstrate the arrangement | positioning relationship of a part, a 4th convex part, and a 6th convex part. FIG. 6: is the top view seen from the 1st surface side of the heat exchanger plate for plate type heat exchangers which concerns on other embodiment of this invention. Drawing 7 is a top view seen from the 2nd surface side of a heat exchanger plate for plate type heat exchangers concerning other embodiments. FIG. 8 shows a state in which a plate heat exchanger is constructed with a heat transfer plate for a plate heat exchanger according to another embodiment, and the first convex portion in the first flow path formed by adjacent heat transfer plates. FIG. 10 is an explanatory diagram for explaining the arrangement relationship between the second convex portion and the fifth convex portion. FIG. 9 shows a state in which a plate heat exchanger is constructed with a heat transfer plate for a plate heat exchanger according to another embodiment, and the third protrusion in the second flow path formed by adjacent heat transfer plates. It is explanatory drawing in order to demonstrate the arrangement | positioning relationship of a part, a 4th convex part, and a 6th convex part. FIG. 10: is the top view seen from the 1st surface side or the 2nd surface side of the heat exchanger plate for plate type heat exchangers concerning another embodiment of this invention. FIG. 11 is a schematic exploded perspective view of a plate heat exchanger having a heat transfer plate for a conventional plate heat exchanger. FIG. 12: is the top view seen from the 1st surface side of the conventional heat exchanger plate for plate type heat exchangers. FIG. 13: is the top view seen from the 2nd surface side of the conventional heat exchanger plate for plate type heat exchangers. FIG. 14 is an explanatory diagram illustrating a first flow path formed by adjacent heat transfer plates in a state in which a plate heat exchanger is constructed with a heat transfer plate for a conventional plate heat exchanger. FIG. 15 is an explanatory diagram for explaining a second flow path formed by adjacent heat transfer plates in a state in which a plate heat exchanger is constructed with a heat transfer plate for a conventional plate heat exchanger. .

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  First, a plate type heat exchanger will be briefly described. As shown in FIG. 1, the plate heat exchanger includes a plurality of plate-type heat exchanger plates (hereinafter simply referred to as heat transfer plates) 1. Thus, the first flow path P1 for circulating the first fluid A and the second flow path P2 for circulating the second fluid B are alternately formed in one direction.

  Accordingly, the plate heat exchanger HE includes a first inflow path P1a and a first outflow path P1b that pass through the plurality of stacked heat transfer plates 1 and connect only to the first flow path P1, and a plurality of the stacked heat transfer plates HE. The second inflow path P2a and the second outflow path P2b that pass through the heat transfer plate 1 and connect only to the second flow path P2 are provided.

  Thereby, the plate type heat exchanger HE has a second inflow path P2a in addition to the first fluid A supplied to the first inflow path P1a flowing through the first flow path P1 and being discharged from the first outflow path P1b. The second fluid B supplied to the refrigerant flows through the second flow path P2 and is discharged from the second outflow path P2b. In the plate heat exchanger HE, the first fluid A flowing through the first flow path P1 and the second fluid B flowing through the second flow path P2 exchange heat via the heat transfer plate 1. Yes.

  The heat transfer plate 1 is a component for constructing the plate heat exchanger HE having the above-described configuration, and includes a first flow path P1, a second flow path P2, a first inflow path P1a, a first outflow path P1b, and a second inflow path. The structure for forming P2a and the 2nd outflow path P2b is provided.

  More specifically, the heat transfer plate 1 includes a plate body 10 that divides a first flow path P1 through which the first fluid A flows and a second flow path P2 through which the second fluid B flows.

  The plate body 10 is formed by press-molding a metal plate, and has a first surface S1 in a first direction and a second surface S2 opposite to the first surface S1. In the present embodiment, the plate body 10 is formed in a rectangular shape in plan view. As the plate body 10 is formed in a rectangular shape in plan view, in the present embodiment, the thickness direction of the plate body 10 is the first direction, the longitudinal direction of the plate body 10 is the second direction, and the plate body 10 The short direction (the direction perpendicular to the first direction and the second direction) perpendicular to the longitudinal direction of the first direction is described as the third direction.

  2 and 3, the plate body 10 includes an intermediate area CA including the first surface S1 and the second surface S2, and an intermediate area CA including the first surface S1 and the second surface S2 in the second direction. A pair of end regions EA and EA that are continuous with the intermediate region CA are provided on both sides. In FIG. 2, the first surface S1 side of the plate body 10 is shown, and a portion protruding outward from the first surface S1 and recessed on the second surface S2 on the back side (on the second surface S2). About the part in which the recessed part was formed, the inside of an outline is expressed by black painting, the part which protrudes outward from the 2nd surface S2 and is depressed on the 1st surface S1 (a recessed part is formed on the 1st surface S1). In this case, only the outline is described, and the inside of the outline is expressed as a ground color. On the other hand, in FIG. 3, the second surface S2 side of the plate body 10 is illustrated, and a portion protruding from the second surface S2 outward and recessed on the first surface S1 on the back side (first surface S1). About the part in which the recessed part was formed above, the inside of the outline is expressed by black painting, the part protruding outward from the first surface S1 and recessed on the second surface S2 (the recessed part on the second surface S2) For the formed part), only the outline is described, and the inside of the outline is expressed as a ground color.

  As shown in FIGS. 2 and 3, the plate body 10 includes two first openings 11, 11 penetrating each of the pair of end regions EA, EA in the first direction, and a pair of end regions EA, EA. The first opening 11 in the same region is spaced apart in the first direction and the third direction orthogonal to the second direction, and each of the pair of end regions EA, EA penetrates in the first direction. The two first openings 12 and 12 and the two first openings 11 and 11 in the pair of end regions EA and EA on the first surface S1 are collectively surrounded, and the pair of ends on the first surface S1. A first seal planned portion 13 (see FIG. 2) that defines a first flow path planned region PP1 that expands in the third direction as it goes to the intermediate region CA in each of the partial regions EA, EA, and is maximum in the intermediate region CA; Two second openings in the pair of end areas EA, EA on the second surface S2 12 and 12 are collectively encircled, and expanded in the third direction toward the intermediate area CA in each of the pair of end areas EA and EA on the second surface S2, maximizing in the intermediate area CA and at least the intermediate area A second planned seal portion 14 (see FIG. 3) that defines a second planned flow path region PP2 that overlaps the first planned flow path region PP1 on the first surface S1 at CA is provided.

  Further, the plate body 10 has a pair of first annular seal planned portions 15 and 15 surrounding each of the second openings 12 and 12 in the pair of end regions EA and EA on the first surface S1 (see FIG. 2). And a pair of second annular seal planned portions 16 and 16 (see FIG. 3) surrounding each of the second openings 12 and 12 in the pair of end regions EA and EA on the second surface S2. . 2 and 3, in order to clarify the respective arrangement of the first seal planned portion 13, the second seal planned portion 14, the first annular seal planned portion 15, and the second annular seal portion 16, these A two-dot chain line is attached as a center line.

  The first openings 11 and 11 and the second openings 12 and 12 are arranged one by one in each of the pair of end regions EA and EA. In the present embodiment, the two first openings 11 and 11 are arranged symmetrically with respect to the lateral center line CL2 extending in the third direction, and the two second openings 12 and 12 are based on the lateral center line CL2. Are arranged symmetrically.

  The 1st opening 11 and the 2nd opening 12 (the 1st opening 11 and the 2nd opening 12 which are in the same area | region) arrange | positioned at each edge part area | region EA and EA are arrange | positioned at intervals in the 3rd direction. . In the present embodiment, the first opening 11 and the second opening 12 arranged in the same (common) end area EA are arranged symmetrically with respect to the longitudinal center line CL1 extending in the second direction. In addition, although each opening 11 and 12 may be formed in a different size and a different shape, in this embodiment, the 1st opening 11 and the 2nd opening 12 are made into the same shape and the same size, and here, it is the same. It is assumed that the diameter is circular.

  In the present embodiment, the four openings (two first openings 11 and 11 and two second openings 12 and 12) are arranged at the four corners of the plate body 10. Specifically, the two first openings 11, 11 are arranged at both corners on one end side (one end side in the short direction) of the plate body 10 in the third direction, and the two second openings 12, 12 are It arrange | positions in the both corner | angular part of the other end side (the other end side of a transversal direction) of the plate main body 10 in a 1st direction.

  The first seal scheduled portion 13 and the second seal scheduled portion 14 are portions that are sealed (sealed) in a liquid-tight manner in relation to another adjacent heat transfer plate 1 (plate body 10). In the present embodiment, the first seal planned portion 13 and the second seal planned portion 14 are endless annular gaskets G conforming to these forms, and are filled (sealed) with the adjacent heat transfer plates 1. An annular gasket G (see FIGS. 4 and 5) is overlaid.

  As shown in FIG. 2, the first seal scheduled portion 13 is a pair of first direction changing portions 130 and 130 disposed in each of the pair of end regions EA and EA, and is arranged with respect to the outer periphery of the first opening 11. A pair of first direction change parts 130, 130 including a first turn part 130a and a pair of first extension parts 130b, 130c extending from both ends of the first turn part 130a to the boundary with the intermediate area CA. A pair of first extension portions 130b, 130c connected to each other of the pair of first direction changing portions 130, 130, which are spaced apart in the third direction and extend in the second direction in the intermediate area CA. And first connection portions 131 and 131.

  In the first direction changing portions 130 and 130, the first turn portion 130a is formed in an arc shape according to the shape of the first opening 11, and each of the pair of first extension portions 130b and 130c Continuing from the turn part 130a, the first turn part 130a is formed so as to extend in a tangential direction in a substantially straight line. In the present embodiment, one first connection portion 131 is disposed along one end of the plate body 10 in the third direction, and the other first connection portion 131 is disposed along the other end of the plate body 10 in the third direction. Are arranged.

  In the first seal scheduled portion 13 according to the present embodiment, one first extension portion 130b of each of the pair of first direction changing portions 130, 130 extends in the second direction, and the first connection portion 131 and the second one are connected to each other. They are arranged in series in the direction. In addition, the other first extension 130c of each of the pair of first direction changing portions 130, 130 is inclined with respect to the longitudinal center line CL1 and extends from the first turn portion 130a toward the lateral center line CL2, The other first connection portion 131 is connected.

  Thereby, the 1st seal | sticker planned part 13 is the trapezoid area | region expanded as it goes to the intermediate | middle area | region CA in each of a pair of edge part area | region EA and EA as 1st flow path planned area | region PP1 which demarcates the 1st flow path P1. Defined.

  As shown in FIG. 3, the second scheduled seal portion 14 is a pair of second direction changing portions 140 and 140 disposed in the pair of end regions EA and EA, respectively, A pair of second turning portions 140a and 140 including a pair of second extension portions 140b and 140c extending from both ends of the second turn portion 140a and the second turn portion 140a partially along the boundary to the intermediate area CA, A pair of second extension portions 140b, 140c of the pair of second direction change portions 140, 140 respectively connected to each other and spaced in the third direction and extending in the second direction in the intermediate area CA. Second connection portions 141 and 141.

  In the second direction change portions 140 and 140, the second turn portion 140a is formed in an arc shape in accordance with the shape of the second openings 12 and 12, and each of the pair of second extension portions 140b and 140c is Continuing from the second turn part 140a, the second turn part 140a is formed to extend substantially linearly in a tangential direction with respect to the second turn part 140a. In the present embodiment, one second connection portion 141 is disposed along the other end of the plate body 10 in the third direction, and the other second connection portion 141 is disposed along one end of the plate body 10 in the third direction. Are arranged.

  In the second scheduled seal portion 14 according to the present embodiment, one second extension portion 140b of each of the pair of second direction change portions 140 and 140 extends in the second direction, and the second connection portion 141 and the second second extension portion 140b extend in the second direction. They are arranged in series in the direction. Also, the other second extension 140c of each of the pair of second direction change parts 140, 140 is inclined with respect to the longitudinal center line CL1 and extends from the second turn part 140a toward the lateral center line CL2, It is connected to the other second connection part 141.

  Thereby, the 2nd seal | sticker planned part 14 is trapezoid-shaped expanded as it goes to intermediate | middle area | region CA in each of a pair of edge part area | region EA, EA as 2nd flow path planned area | region PP2 which delimits 2nd flow path P2. An area is defined.

  In the present embodiment, the pair of first connection parts 131 and 131 of the first seal scheduled part 13 and the pair of second connection parts 141 and 141 of the second seal scheduled part 14 coincide with each other in the third direction ( (Overlapping position on both sides). That is, the first seal planned portion 13 and the second seal planned portion 14 are a first flow channel planned region PP1 defined on the first surface S1 and a second flow channel planned region PP2 defined on the second surface S2. Are formed so as to be symmetrical with respect to the longitudinal center line CL1.

  Then, the heat transfer plate 1 according to the present embodiment is inverted 180 ° around the horizontal center line CL2 as the rotation center when the plate heat exchanger HE is constructed (a plurality of plates are stacked in one direction). Thus, the first surface S1 of the plate body 10 faces the first surface S1 of the heat transfer plate 1 adjacent on one side in one direction, and the second surface S2 of the plate body 10 is adjacent on the other side in one direction. It faces the second surface S2 of the heat plate 1.

  Accordingly, each of the first seal planned portion 13 and the second seal planned portion 14 has a shape of one end side and a shape of the other end side in the second direction with the horizontal center line CL2 as a boundary. It has a symmetrical shape with the axis of symmetry as the axis of symmetry.

  As shown in FIGS. 2 and 3, the first annular seal scheduled portions 15 and 15 and the second annular seal scheduled portions 16 and 16 are liquid-tight in relation to another adjacent heat transfer plate 1 (plate body 10). It is a site to be sealed (sealed). In the present embodiment, the first annular seal scheduled portions 15 and 15 and the second annular seal scheduled portions 16 and 16 are endless annular gaskets G conforming to these forms, and are connected to the adjacent heat transfer plates 1. An annular gasket G (see FIGS. 4 and 5) for filling (sealing) the gap is overlapped.

  The pair of first annular seal scheduled portions 15, 15 correspond to the two second openings 12, 12 that are excluded from the objects to be surrounded by the first seal planned portion 13, and therefore are surrounded by the first seal planned portion 13. It arrange | positions outside the made area | region (1st flow-path plan area | region PP1) (refer FIG. 2). In addition, the pair of second annular seal scheduled portions 16, 16 correspond to the two first openings 11, 11 that are not included in the envelopment by the second seal scheduled portion 14. Is disposed outside the region (second flow path planned region PP2) surrounded by (see FIG. 3). In the present embodiment, as the first openings 11 and 11 and the second openings 12 and 12 are formed in a circular shape, the first annular seal planned portions 15 and 15 and the second annular seal planned portions 16 and 16 are respectively , Formed in an annular shape.

  In the present embodiment, on the assumption that the heat transfer plate 1 (plate body 10) has the above-described configuration, the plate body 10 has a pair of end regions EA and EA in the intermediate region CA in the first flow path planned region PP1. At least in a region in the vicinity of each of the pair of first openings 11 and 11 in the intermediate region CA, extending in a direction intersecting the lateral center line CL2, and A region in the vicinity of the boundary between the plurality of first protrusions 17 that form a predetermined angle with respect to the horizontal center line CL2 and the pair of end regions EA, EA in the intermediate region CA among the first flow path planned region PP1. Each of the pair of first openings 11 and 11 in the intermediate area CA is disposed at least in an area far from each other, extends in a direction intersecting the lateral center line CL2, and Angle with respect to the center line CL2 comprises a plurality of second convex portions 18 ... forming a greater angle than the first protrusion 17 ....

  The plate body 10 is a region in the vicinity of the boundary between the pair of end regions EA and EA in the intermediate region CA in the second flow path planned region PP2, and a pair of second openings in the intermediate region CA. A plurality of third convex portions 19 that are arranged at least in regions immediately adjacent to each other, extend in a direction intersecting the lateral center line CL2, and form a predetermined angle with respect to the lateral center line CL2. Of the second planned flow path region PP2, a region in the vicinity of the boundary between each of the pair of end regions EA and EA in the intermediate region CA, and far from each of the pair of second openings 12 and 12 in the intermediate region CA A plurality of fourth protrusions 2 that are arranged at least in a region extending in a direction intersecting the horizontal center line CL2 and that have an angle with respect to the horizontal center line CL2 larger than that of the third protrusions 19. ... and a.

  In the present embodiment, the plate body 10 is a region in the vicinity of the boundary between each of the pair of end regions EA and EA in the intermediate region CA in the first flow path planned region PP1, and the first opening in the intermediate region CA. 11 is disposed at least in a region between a region nearest to the first opening 11 and a region far from the first opening 11, extends in a direction intersecting the horizontal center line CL 2, and with respect to the horizontal center line CL 2. A plurality of fifth convex portions 21 are further provided with an angle larger than that of the first convex portions 17 and smaller than that of the second convex portions 18.

  In the present embodiment, the plate body 10 is a region in the vicinity of the boundary between each of the pair of end regions EA and EA in the intermediate region CA in the second flow path planned region PP2, and in the intermediate region CA. It is disposed at least in a region between a region closest to the second opening 12 and a region far from the second opening 12, extends in a direction intersecting the horizontal center line CL2, and has a horizontal center. A plurality of sixth convex portions 22... Having a larger angle with respect to the line CL2 than the third convex portions 19 and smaller than the fourth convex portions 20.

  More specifically, the intermediate area CA of the plate body 10 is further subdivided into an intermediate central area CA1 including the lateral center line CL2, and a pair of intermediate end portions on both sides in the second direction of the intermediate central area CA1. The regions CA2 and CA2 include a pair of intermediate end regions CA2 and CA2 sandwiched between the end region EA and the intermediate central region CA1.

  Each of the intermediate end areas CA2 and CA2 is further subdivided into an end center area CA2a including the vertical center line CL1, and a pair of side areas CA2b on both sides of the end center area CA2a in the third direction. , CA2b.

  One side region CA2b of the pair of side regions CA2b, CA2b included in the intermediate end region CA2 is aligned with the first opening 11 in the adjacent end region EA in the second direction, and the one side The size (length) in the third direction in the partial area CA2b corresponds or substantially corresponds to the opening width of the first opening 11 in the third direction. On the other hand, the other side region CA2b of the pair of side regions CA2b, CA2b included in the intermediate end region CA2 is aligned with the second opening 12 in the adjacent end region EA in the second direction, The size (length) in the third direction of the other side region CA2b corresponds to or substantially corresponds to the opening width of the second opening 12 in the third direction.

  Accordingly, the end center area CA2a is aligned in the second direction with respect to the area between the first opening 11 and the second opening 12 in the same end area EA, and the end center area CA2a The size in the third direction corresponds to or substantially corresponds to the distance between the first opening 11 and the second opening 12. Note that the size (length) in the second direction in the intermediate area CA (intermediate central area CA1, intermediate end area CA2, CA2) is set in consideration of the properties of the fluid to be heat exchanged, the heat exchange state, and the like.

  With this arrangement, one side region CA2b of the pair of side regions CA2b and CA2b in each of the pair of intermediate end regions CA2 and CA2 is the end region in the intermediate region CA in the first flow path planned region PP1. The region near the boundary with the EA, which is a region in the immediate vicinity of the first opening 11 in the intermediate region CA, and the other of the pair of side regions CA2b and CA2b in each of the pair of intermediate end regions CA2 and CA2 The side region CA2b is a region in the vicinity of the boundary with the end region EA in the intermediate region CA, and is a region far from the first opening 11 in the intermediate region CA. In addition, one side region CA2b of the pair of side regions CA2b and CA2b in each of the pair of intermediate end regions CA2 and CA2 is an end region EA in the intermediate region CA in the second flow path planned region PP2. In the vicinity of the boundary between the second opening 12 in the intermediate area CA and the other of the pair of side areas CA2b and CA2b in each of the pair of intermediate end areas CA2 and CA2 The side area CA2b is an area in the vicinity of the boundary with the end area EA in the intermediate area CA, and is an area in the immediate vicinity of the second opening 12 in the intermediate area CA.

  Further, the end center area CA2a in each of the pair of intermediate end areas CA2 and CA2 is an area near the boundary with the end area EA in the intermediate area CA in the first flow path planned area PP1, and the intermediate area CA In the second flow path planned region PP2, the end region EA in the intermediate region CA is a region between the region closest to the first opening 11 and the region far from the first opening 11. This is a region near the boundary between the region close to the second opening 12 and the region far from the second opening 12 in the intermediate region CA.

  Accordingly, the first convex portions 17 are arranged on the first surface S1 of one side region CA2b of each intermediate end region CA2, CA2, and the second convex portions 18 are arranged in each intermediate end region. Arranged on the first surface S1 of the other side area CA2b of CA2 and CA2. On the other hand, the 3rd convex part 19 ... is arrange | positioned on the 2nd surface S2 of the other side area | region CA2b of each intermediate | middle edge part area | region CA2, CA2, and 4th convex part 20 ... is each intermediate | middle edge part area | region. Arranged on the second surface S2 of one side area CA2b of CA2 and CA2.

  Thus, since the first convex portions 17 and the fourth convex portions 20 are arranged in the same region, although the front and back are in a relationship, the plurality of first convex portions 17 are the plurality of fourth convex portions. 20... That is, in the second direction and the third direction, the first convex portions 17 and the fourth convex portions 20 are alternately arranged. Thereby, the 1st convex part 17 ... and the 4th convex part 20 ... are arrange | positioned at matrix form with respect to one side area | region CA2b of each intermediate | middle edge part area | region CA2, CA2.

  In addition, since the second convex portions 18 and the third convex portions 19 are arranged in the same region, although the front and back are in a relationship, the plurality of second convex portions 18 are the plurality of third convex portions 19. It is arranged between. That is, the second protrusions 18 and the third protrusions 19 are alternately arranged in the second direction and the third direction. Thereby, the 2nd convex part 18 ... and the 3rd convex part 19 ... are arrange | positioned at matrix form with respect to the other side part area | region CA2b of each intermediate | middle edge part area | region CA2, CA2.

  In addition, the fifth convex portions 21 are arranged on the first surface S1 of the end central region CA2a of the intermediate end regions CA2 and CA2, and the sixth convex portions 22 are formed of the intermediate end regions CA2 and CA2. It arrange | positions at 2nd surface S2 of edge part center area | region CA2a.

  The fifth convex portions 21... And the sixth convex portions 22... Are arranged in the same region, but the plurality of fifth convex portions 21. Arranged between. That is, the fifth convex portions 21 and the sixth convex portions 22 are alternately arranged in the second direction and the third direction. Thereby, the 5th convex part 21 ... and the 6th convex part 22 ... are arrange | positioned at matrix form with respect to edge part center area | region CA2a of each intermediate | middle edge part area | region CA2, CA2.

  In the present embodiment, since the heat transfer plate 1 (plate body 10) is formed by press-molding a metal plate, the first convex portion 17 ..., the second convex portion 18 ..., the third convex portion 19 ..., and the first The back side of each of the four convex portions 20 is a concave portion.

  Moreover, in this embodiment, the 1st convex part 17 ... and the 3rd convex part 19 ... make an angle smaller than 45 degrees with respect to horizontal center line CL2, and the 2nd convex part 18 ... and the 4th convex part 20 are included. ... is at an angle larger than 45 ° with respect to the horizontal center line CL2. Accordingly, the fifth convex portions 21 and the sixth convex portions 22 form 45 ° with respect to the horizontal center line CL2.

  In the present embodiment, each of the first convex portion 17, the second convex portion 18, the third convex portion 19, the fourth convex portion 20, the fifth convex portion 21, and the sixth convex portion 22. When the plurality of heat transfer plates 1 are overlapped by inclining to the horizontal center line CL2, the corresponding convex portions (first convex portion 17 ..., second convex portion 18 ... 3rd convex part 19 ..., 4th convex part 20 ..., 5th convex part 21 ..., and 6th convex part 22 ...) and it is formed so that it may collide.

  In the present embodiment, as described above, the heat transfer plate 1 is inverted by 180 ° around the horizontal center line CL2 as the rotation center when the plate heat exchanger HE is constructed (a plurality of plates are stacked in one direction). It is supposed to let you.

  Accordingly, the first protrusion 17 disposed in one side area CA2b of one intermediate end area CA2 and the first protrusion disposed in one side area CA2b of the other intermediate end area CA2. The portion 17... Has the same form as viewed from the first direction, is symmetrically arranged with respect to the horizontal center line CL2, and is arranged in the other side region CA2b of one intermediate end region CA2. The second convex portion 18 and the second convex portion 18 arranged in the other side region CA2b of the other intermediate end region CA2 have the same form as viewed from the first direction, They are arranged symmetrically with respect to the line CL2.

  Moreover, the 3rd convex part 19 arrange | positioned in the other side part area | region CA2b of 3rd convex part 19 ... of the other intermediate | middle edge part area | region CA2 and the 3rd convex part 19 arrange | positioned in the other side area | region CA2b of one intermediate | middle edge part area | region CA2. Is arranged symmetrically with respect to the horizontal center line CL2 while having the same form as viewed from the first direction, and arranged in one side area CA2b of one intermediate end area CA2. The fourth convex portions 20 ... and the fourth convex portions 20 ... arranged in one side region CA2b of the other intermediate end region CA2 have the same form as viewed from the first direction, and the horizontal center line CL2. It is arranged symmetrically with respect to.

  Further, fifth convex portions 21 arranged in the end central region CA2a of one intermediate end region CA2 and fifth convex portions 21 arranged in the end central region CA2a of the other intermediate end region CA2. Is the same as viewed from the first direction, is symmetrically arranged with respect to the horizontal center line CL2, and is arranged in the end central region CA2a of one intermediate end region CA2 The portions 22... And the sixth convex portions 22... Arranged in the end central region CA2a of the other intermediate end region CA2 are symmetrical with respect to the horizontal center line CL2 while having the same form as viewed from the first direction. It is a typical arrangement.

  Thereby, in the state which piled up the several heat-transfer plate 1, adjacent heat-transfer plate 1 is 1st convex part 17 ..., 2nd convex part 18 ..., 4th convex part 20 ..., and 5th. The convex portions 21 and the sixth convex portions 22 are cross-abutted (see FIGS. 4 and 5).

  The heat transfer plate 1 according to the present embodiment includes a plurality of ridges 23 and 24 on the intermediate central area CA1 in the intermediate area CA on each of the first surface S1 and the second surface S2 of the plate body 10. Is provided. The ridges 23 and the ridges 24 are alternately arranged in a direction orthogonal to the direction in which the ridges 23 and 24 extend. The ridges 23 and the ridges 24 continuously extend from the end (one end and the other end) of the plate body 10 in the third direction to the longitudinal center line CL1, and the longitudinal center line CL1 and the lateral center line. It is inclined at a predetermined angle with respect to CL2. In the present embodiment, the ridges 23 and 24 in the region on one end side in the third direction with the longitudinal center line CL1 as a boundary, and the other end side in the third direction with the longitudinal center line CL1 as a boundary. The ridges 23 and the ridges 24 in the region are arranged symmetrically with respect to the longitudinal center line CL1.

  The heat transfer plate 1 according to the present embodiment is as described above, and a plurality of the heat transfer plates 1 are overlaid when the plate heat exchanger HE is constructed. In the present embodiment, in order to form the plate heat exchanger HE with one type (one form) of the heat transfer plate 1, as described above, when the plurality of heat transfer plates 1 are overlapped, every other one in one direction. Then, the heat transfer plate 1 is inverted 180 ° with the horizontal center line CL2 as the center of rotation.

  Thus, as shown in FIG. 1, in each heat transfer plate 1, the first surface S <b> 1 is opposed to the first surface S <b> 1 of the adjacent heat transfer plate 1 on one side in one direction, and the second surface S <b> 2 is in one direction. It faces the second surface S2 of the heat transfer plate 1 adjacent on the other side. At the same time, the first seal planned portions 13 and the first annular seal planned portions 15 and 15 of the adjacent heat transfer plates 1 face each other, and the second seal planned portions 14 and the second annular seal planned portions 16 and 16 are opposed to each other. Since they face each other, a gasket G is interposed between them (see FIGS. 4 and 5), and the plurality of heat transfer plates 1 are tightened and bound in one direction.

  Thereby, between the adjacent heat transfer plates 1, a first flow path P1 conforming to the form of the first seal planned portion 13 is formed, and a second flow path P2 conforming to the form of the second seal planned portion 14 is formed. Is formed. That is, the first flow path P1 and the second flow path P2 are alternately formed in one direction with the heat transfer plate 1 as a boundary.

  In addition, the first openings 11 of the plurality of heat transfer plates 1 are connected to form a first inflow path P1a and a first outflow path P1b that communicate with only the first flow path P1, and the second of the plurality of heat transfer plates 1 is formed. A second inflow path P2a and a second outflow path P2b are formed which are continuous with the openings 12 and communicate with only the second flow path P2.

  In this state, as shown in FIG. 4, the first flow path P1 is formed in a trapezoidal shape when viewed from the first direction. That is, the first flow path P1 is a flow path that expands from both sides in the second direction (in each of the pair of end areas EA and EA) toward the intermediate area CA according to the form of the first seal scheduled portion 13. In the interior, the first convex portions 17 of the adjacent heat transfer plates 1, 1, the second convex portions 18, the fifth convex portions 21, and the convex strips 23 intersect each other.

  Moreover, as shown in FIG. 5, the inside of the 2nd flow path P2 is formed in trapezoid shape seeing from a 1st direction. That is, the second flow path P2 is a flow path that expands from both sides in the second direction (in each of the pair of end areas EA and EA) toward the intermediate area CA according to the form of the second seal scheduled portion 14. Then, in the inside, the third convex portions 19 of the adjacent heat transfer plates 1, 1, the fourth convex portions 20, the sixth convex portions 22, and the convex strips 23 cross each other.

  That is, in the first flow path P1 formed by the seal with respect to the first seal planned portion 13, as shown in FIG. 4, the area closest to the first inflow path P1a (one first opening 11) and the first flow in the intermediate area CA. The first convex portions 17 are present in the immediate area with respect to the exit path P1b (the other first opening 11), and the area far from the first inflow path P1a (the one first opening 11) in the intermediate area CA and In a region far from the first outflow passage P1b (the other first opening 11) in the intermediate region CA, the second convex portion 18 has an angle greater than the first convex portion 17 with respect to the lateral center line CL2. (2nd convex part 18 ... which makes resistance of the flow of the 1st fluid A of the 2nd direction small compared with the 1st convex part 17 ...) will exist.

  As a result, the flow resistance of the first fluid A in the flow path (the flow path including the path through which the first fluid A flows in the third direction) in which the distance from the first inflow path P1a to the first outflow path P1b becomes longer is obtained. Get smaller.

  That is, the intermediate area CA (the first fluid A flows in the third direction) farther from the first inflow path P1a than the flow velocity of the first fluid A in the intermediate area CA in the immediate vicinity of the first inflow path P1a. The flow velocity of the first fluid A in the intermediate area CA) to be reached is increased, and the first outflow path is higher than the flow velocity of the first fluid A in the intermediate area CA immediately adjacent to the first outflow path P1b. The flow rate of the first fluid A in the intermediate area CA far from P1b is increased.

  Accordingly, even if the length of the flow path of the first fluid A in the first flow path P1 is different, the flow path (the first fluid A is increased) from the first inflow path P1a to the first outflow path P1b. The distribution time of the first fluid A in the distribution path including the path flowing in the third direction) and the distribution time of the first fluid A in the distribution path having a short distance from the first inflow path P1a to the first outflow path P1b. The difference between the first fluid A and the first fluid A is made uniform or uniform.

  Further, in the second flow path P2 formed by the seal with respect to the second seal scheduled portion 14, as shown in FIG. 5, the area closest to the second inflow path P2a (one second opening 12) in the intermediate area CA and the second flow path P2. The third convex portion 19 is present in a region closest to the two outflow passages P2b (the other second opening 12), and is far from the second inflow passage P2a (the one second opening 12) in the intermediate region CA. The fourth convexity in which the angle with respect to the horizontal center line CL2 forms an angle larger than that of the third convex portion 19 in a region far from the second outflow path P2b (the other second opening 12) in the region and the intermediate region CA. There are portions 20 (fourth protrusions 20 that reduce the flow resistance of the second fluid B in the first direction compared to the third protrusions 19).

  Thereby, the distribution resistance of the second fluid B in the distribution path (the distribution path including the path through which the second fluid B flows in the second direction) in which the distance from the second inflow path P2a to the second outflow path P2b becomes long. Becomes smaller.

  That is, the intermediate area CA (the second fluid B flows in the third direction) farther from the second inflow path P2a than the flow velocity of the second fluid B in the intermediate area CA closest to the second inflow path P2a. The second fluid B in the middle region) that reaches the second outflow path P2b becomes faster than the second fluid B in the intermediate region CA in the immediate vicinity of the second outflow path P2b. The flow rate of the second fluid B in the intermediate area CA that is far from the path P2b is increased.

  Therefore, even if the length of the flow path of the second fluid B in the second flow path P2 is different, the flow path (second fluid) that increases the distance from the second inflow path P2a to the second outflow path P2b. The second fluid B in the circulation path in which the distance from the second inflow path P2a to the second outflow path P2b is short and the circulation time of the second fluid B in the distribution path including the path in which B flows in the third direction. The flow time of the second fluid B in the second flow path P <b> 2 is made uniform by making the difference with the flow time smaller or the same.

  Accordingly, the first fluid A that circulates uniformly in the first flow path P1 and the second fluid B that circulates evenly in the second flow path P2 are in the entire region contributing to heat transfer of the heat transfer plate 1 or A uniform heat exchange is performed in almost the entire area. Thereby, heat exchange efficiency improves.

  Further, as shown in FIG. 4, a flow path including a path through which the first fluid A flows from the first inflow path P1a (first opening 11) toward the nearest intermediate area CA, and a first inflow path P1a (first The first outflow passage P1b (the first outflow passage P1b from the flow path between the flow path including the flow path including the path through which the first fluid A flows toward the intermediate area CA far from the one opening 11, 11) and the intermediate area CA. A flow path including a path through which the first fluid A flows toward one opening 11), and a path through which the first fluid A flows from a distant central region toward the first outflow path P1b (first opening 11). In the distribution path between the distribution paths, there are fifth convex portions 21 that generate a distribution resistance that is smaller than the distribution resistance due to the first convex portions 17 and larger than the distribution resistance due to the second convex portions 18. become. Thereby, in the 1st flow path P1, the rapid change of the flow resistance of the 1st fluid A is suppressed by the 3rd direction.

  In addition, as shown in FIG. 5, a flow path including a path through which the second fluid B flows from the second inflow path P2a (second opening 12) toward the nearest intermediate area CA, and a second inflow path P2a (second A second flow path P2b (second flow path from the flow path between the flow path including the flow path through which the second fluid B flows from the second opening 12) toward the intermediate area CA far from the second intermediate opening 12). Including a flow path including a path through which the second fluid B flows toward the opening 12) and a path through which the second fluid B flows from the remote central region toward the second outflow path P2b (second opening 12). There are sixth convex portions 22 that cause a distribution resistance that is smaller than the distribution resistance due to the third convex portions 19 and larger than the distribution resistance due to the fourth convex portions 20. become. Thereby, also in the 2nd flow path P2, the rapid change of the distribution resistance of the 2nd fluid B is suppressed by the 3rd direction.

  Therefore, in each of the first flow path P1 and the second flow path P2, the flow state of the fluid is made more uniform, so that better heat exchange performance is exhibited.

  As described above, the heat transfer plate 1 according to this embodiment includes the plurality of first protrusions 17 and the plurality of second protrusions 18 on the first surface S1 of the plate body 10, and the plate body 10 Since the second surface S2 is provided with a plurality of third convex portions 19 and a plurality of fourth convex portions 20, a flow path (first fluid) that increases the distance from the first inflow path P1a to the first outflow path P1b. A distribution path (a distribution path including a path in which A flows in the third direction) is reduced, and a distribution path (the distance from the second inflow path P2a to the second outflow path P2b) is increased. The flow resistance of the second fluid B in the flow path including the path through which the second fluid B flows in the third direction is small, and the flow state of the fluid in each of the first flow path P1 and the second flow path P2 is made uniform. As a result, heat exchange efficiency can be improved. It can be an excellent effect that it is.

  In the present embodiment, the first openings 11 and 11 and the second openings 12 and 12 in each of the pair of end regions EA and EA are arranged symmetrically with respect to the lateral center line CL2 and are the same. The first openings 11 and 11 and the second openings 12 and 12 in the end regions EA and EA are arranged symmetrically with respect to the longitudinal center line CL1, and the plurality of first protrusions 17 on the first surface S1. Are arranged between the plurality of fourth protrusions 20 on the second surface S2, and the plurality of second protrusions 18 on the first surface S1 are the plurality of third protrusions 19 on the second surface S2. Since the first convex portions 17 and the fourth convex portions 20 are disposed in correspondence with each other, the second convex portions 18 and the third convex portions 19 are associated with each other. It becomes arrangement with. Therefore, the fluid flow state on the first surface S1 side (first flow path P1) and the second surface S2 side (second flow path P2) is made uniform.

  Moreover, the plate main body 10 is formed by press molding, and the back side of each of the first convex portion 17, the second convex portion 18, the third convex portion 19, and the fourth convex portion 20 is a concave portion. Therefore, the plate body 10 has a concave surface on the back side in addition to the convex surfaces of the first convex portion 17, the second convex portion 18, the third convex portion 19, and the fourth convex portion 20. Will have. Therefore, the surface area that contributes to heat transfer is increased, and the heat transfer performance is enhanced.

  In addition, since the plate body 10 further includes a plurality of fifth convex portions 21 and a plurality of sixth convex portions 22, the flow resistance of the first fluid A in the third direction is abrupt in the first flow path P1. While the change is suppressed, the rapid change in the flow resistance of the second fluid B in the third direction is suppressed in the second flow path P2. Therefore, in each of the first flow path P1 and the second flow path P2, the flow state of the fluid is made more uniform, so that better heat exchange performance is exhibited.

  In addition, since the plate heat exchanger HE according to the present embodiment includes the heat transfer plate 1 having the above-described configuration, it is possible to equalize the flow state of the fluid in each of the first flow path P1 and the second flow path P2. As a result, it is possible to achieve an excellent effect that the heat exchange efficiency can be improved.

  In addition, this invention is not limited to the said embodiment, Of course, it can change suitably in the range which does not deviate from the summary of this invention.

  In the said embodiment, the 1st seal plan part 13 surrounds the two 1st opening 11 and 11, and the 1st flow path plan which forms the 1st flow path P1 which makes the 1st fluid A the trapezoid flow (trapezoid flow). The region PP1 is defined, and the second seal scheduled portion 14 surrounds the two first openings 11 and 11 and forms a second flow path P2 that makes the second fluid B a trapezoidal flow (trapezoidal flow). Although the two flow path planned area PP2 is defined, the present invention is not limited to this. In other words, the first seal scheduled portion 13 collectively surrounds the two first openings 11 and 11 on the first surface S1, and the first region S1 includes an intermediate region in each of the pair of end regions EA and EA. The first flow path planned area PP1 that expands in the third direction as it goes to CA and is maximum in the intermediate area CA is defined, and the second seal planned part 14 has two second openings 12, 12 on the second surface S2. Are expanded in the third direction toward the intermediate area CA in each of the pair of end areas EA and EA on the second surface S2, and are maximized in the intermediate area CA and at least in the intermediate area CA. What is necessary is just to demarcate the 2nd channel plan area | region PP2 which overlaps with the 1st channel plan area | region PP1 on one surface S1.

  Specifically, as shown in FIGS. 6 and 7, the arrangement of the first opening 11 and the second opening 12 arranged in one of the pair of end areas EA, EA. The first seal planned portion 13 surrounds the two first openings 11 and 11 to define the first flow channel planned region PP1 that forms the first flow channel P1 in a rhombus shape, and the second seal planned portion 14 may surround the two second openings 12 and 12 to define a second flow path planned region PP2 that forms the second flow path P2 in a diamond shape. In other words, the first seal planned portion 13 defines a first flow path planned region PP1 that forms a first flow path P1 that causes the first fluid A to flow in a diagonal direction of the plate body 10 (makes the skew flow). The second seal planned portion 14 defines a second flow path planned area PP2 that forms a second flow path P2 that causes the first fluid A to flow in the diagonal direction of the plate body 10 (makes the flow oblique). Also good.

  In this case, one side region CA2b in one intermediate end region CA2 is a region near the boundary with the end region EA in the intermediate region CA in the first flow path planned region PP1, and is the first region in the intermediate region CA. The other side region CA2b of one intermediate end region CA2 is a region near the boundary with the end region EA in the intermediate region CA, and is the first region in the intermediate region CA. This is a region far from the opening 11.

  On the other hand, one side region CA2b in the other intermediate end region CA2 is a region near the boundary with the end region EA in the intermediate region CA in the first flow path planned region PP1, and in the intermediate region CA. The other side region CA2b of the other intermediate end region CA2 is a region near the boundary with the end region EA in the intermediate region CA, and is located far from the first opening 11. This is a region immediately adjacent to one opening 11.

  In addition, one side area CA2b in one intermediate end area CA2 is an area in the vicinity of the boundary with the end area EA in the intermediate area CA in the second flow path planned area PP2, and is the first in the intermediate area CA. The other side region CA2b of one intermediate end region CA2 is a region in the vicinity of the boundary with the end region EA in the intermediate region CA, and is the second region in the intermediate region CA. This is a region immediately adjacent to the opening 12.

  On the other hand, one side area CA2b in the other intermediate end area CA2 is an area near the boundary with the end area EA in the intermediate area CA in the second flow path planned area PP2, and the intermediate area CA The other side region CA2b of the other intermediate end region CA2 is a region in the vicinity of the boundary with the end region EA in the intermediate region CA, and is in the intermediate region CA. The region is located far from the second opening 12.

  Accordingly, as shown in FIG. 8, the first convex portions 17 in the first flow path P1 have one side region CA2b in one intermediate end region CA2 and the other side portion in the other intermediate end region CA2. The second protrusions 18 are arranged on the first surface S1 of the area CA2b, and the second protrusions 18... Of the other side area CA2b in one intermediate end area CA2 and the one side area CA2b in the other intermediate end area CA2. Arranged on one surface S1. On the other hand, as shown in FIG. 9, the third convex portions 19 in the second flow path P2 have one side in the other side region CA2b and one in the other middle end region CA2 in one middle end region CA2. The fourth protrusions 20 are arranged on the second surface S2 of the side region CA2b of the first side region CA2b in one intermediate end region CA2 and the other side region in the other intermediate end region CA2. It arrange | positions on the 2nd surface S2 of CA2b.

  Accordingly, in this case as well, as in the above embodiment, the flow path (including the flow path in which the first fluid A flows in the third direction) increases in the distance from the first inflow path P1a to the first outflow path P1b. ) In which the flow resistance of the first fluid A decreases and the distance from the second inflow path P2a to the second outflow path P2b increases (the flow including the path through which the first fluid A flows in the third direction). Since the flow resistance of the second fluid B in the path) is reduced, the first fluid A that circulates uniformly in the first flow path P1 and the second fluid B that circulates uniformly in the second flow path P2 are: Homogeneous heat exchange is performed over the entire region or almost the entire region that contributes to the heat transfer of the heat transfer plate 1. Thereby, heat exchange efficiency improves. In this case, two types of heat transfer plates in which the arrangements of the respective components such as the first seal planned portions 13 on the first surface S1 and the second seal planned portions 14 on the second surface S2 are mirror images are arranged. 1 is used, the first convex portion 17, the second convex portion 18, the third convex portion 19, the fourth convex portion 20, the fifth convex portion 21, and the sixth convex portion of the two types of heat transfer plates 1, 1. The part 22 is in a mode of cross-contacting with the opposing opponent.

  In the above embodiment, the plurality of ridges 23 and 24 are disposed on the first surface S1 and the second surface S2 of the intermediate central region CA1 in the intermediate region CA of the plate body 10, but the present invention is not limited to this. . For example, as shown in FIG. 10, assuming that the first flow path P1 and the second flow path P2 are formed in a trapezoidal flow path, one side area CA2b of each of the pair of intermediate end areas CA2 and CA2 is provided. First convex portions 17 are arranged on the first surface S1 and the first surface S1 of the region corresponding to one side region CA2b in the intermediate central region CA1, and each of the pair of intermediate end regions CA2 and CA2 The second convex portion 18 is arranged on the first surface S1 of the other side region CA2b of the second side region CA2b of each of the pair of intermediate end regions CA2 and CA2, and the middle center Third convex portions 19 are arranged on the second surface S2 of the region corresponding to the other side region CA2b in the region CA1, and the first side region CA2b of each of the pair of intermediate end regions CA2 and CA2 is arranged. On the two surfaces S2, there are fourth convex portions 20 ... It may be location. At the same time, the first surface S1 of the end central region CA2a of each of the pair of intermediate end regions CA2 and CA2 and the first surface S1 of the region corresponding to the end central region CA2a in the intermediate central region CA1 are fifth. The convex portions 21 are arranged, and the second surfaces S2 of the end central regions CA2a of the pair of intermediate end regions CA2 and CA2 and the regions corresponding to the end central regions CA2a in the intermediate central region CA1 Sixth convex portions 22 may be arranged on the two surfaces S2.

  Further, in this case, the region is continuous with the other side region CA2b in the first flow path planned region PP1, and is along the other first extension portion 130c of the first direction changing portions 130, 130 in the end region EA. A plurality of second convex portions 18 may be arranged with respect to the region. In this way, the first fluid A can be guided to the intermediate area CA with respect to the area far from the first openings 11, 11 (the first inflow path P1a or the first outflow path P1b). The dispersibility of the first fluid A in the one flow path P1 can also be improved. Further, it is a region that is continuous with the other side region CA2b in the second flow path planned region PP2, and is a region along the other second extension portion 140c of the second direction changing portions 140, 140 in the end region EA. A plurality of fourth convex portions 20 may be arranged. In this way, the second fluid B can be guided to the intermediate area CA with respect to the area far from the second openings 12, 12 (second inflow path P2a or second outflow path P2b), Dispersibility of the second fluid B in the second flow path P2 can also be improved.

  In the said embodiment, while arrange | positioning the 5th convex part 21 ... in 1st surface S1 of edge part center area | region CA2a of intermediate | middle edge part area | region CA2, on 2nd surface S2 of edge part center area | region CA2a of intermediate | middle edge part area | region CA2. Although the 6th convex part 22 ... has been arrange | positioned, it is not limited to this. For example, without providing the fifth convex portions 21 and the sixth convex portions 22 in the end central region CA2a, a half region on one side in the third direction with the longitudinal center line CL1 as a boundary in the end central region CA2a. The first protrusions 17 are arranged in an area adjacent to the side area CA2b where the first protrusions 17 are arranged, and the first center part CL1 in the end center area CA2a is used as a boundary. 2nd convex part 18 ... may be arrange | positioned to the area | region of the other half of 3 directions, Comprising: Side area | region CA2b where 2nd convex part 18 ... is arrange | positioned.

  That is, the first convex portion 17 is a region in the vicinity of the boundary with the end region EA of at least the intermediate region CA in the first surface S1 of the plate body 10 in the first flow path planned region PP1. It arrange | positions in the area | region nearest to the 1st opening 11, and the 2nd convex part 18 ... is an edge part area | region of at least intermediate | middle area | region CA in 1st surface S1 of the plate main body 10 in 1st flow-path plan area | region PP1. What is necessary is just to arrange | position to the area | region of the boundary of EA, and the area | region far from the 1st opening 11 (preferably farthest). Moreover, the 3rd convex part 19 ... is an area | region of the vicinity of the boundary with the edge part area | region EA of at least intermediate | middle area | region CA in 2nd surface S2 of the plate main body 10 in 2nd flow-path plan area | region PP2. The fourth protrusions 20 are arranged in a region closest to the second opening 12 and the end of at least the intermediate region CA on the second surface S2 of the plate body 10 in the second flow path planned region PP2. What is necessary is just to arrange | position to the area | region of the vicinity of the boundary with the partial area EA, and far (preferably farthest) from the second opening 12.

  In the said embodiment, although the heat-transfer plate 1 provided only with the plate main body 10 was demonstrated, it is not limited to this. For example, the heat transfer plate 1 may be configured so that the neighbors are fitted together in a state of being overlapped in one direction. That is, the heat transfer plate 1 includes an annular fitting portion extending from the outer periphery of the plate body 10 to the first surface S1 side or the second surface S2 side of the plate body 10 in addition to the plate body 10, What was comprised so that a fitting part of own may fit with the fitting part of the adjacent heat-transfer plate 1 in the match | combined state.

  In the said embodiment, the heat-transfer plate 1 (plate type heat | fever) which forms the 1st flow path P1 and the 2nd flow path P2 by pinching | interposing the gasket G arrange | positioned at each of the 1st scheduled seal part 13 and the 2nd planned seal part 14 Although the exchanger HE) has been described, it is not limited to this. For example, the heat transfer plate 1 is brazed to the adjacent heat transfer plate 1 so that the first seal scheduled portions 13, the second seal planned portions 14, the first annular seal scheduled intervals, and the second annular seal The space between the planned portions 16 and 16 may be sealed in a liquid-tight manner.

  In the said embodiment, although the heat-transfer plate 1 formed by press-molding one metal plate was demonstrated, it is not limited to this. For example, two press-formed metal plates (at least a first convex portion 17, a second convex portion 18, a first seal planned portion 13, and first annular seal planned portions 15, 15 are formed. And at least the third convex portion 19, the fourth convex portion 20, the second seal planned portion 14, and the metal plate on which the second annular seal planned portions 16, 16 are formed. The heat transfer plate 1 formed in a single unit may be used. In this case, the plurality of first protrusions 17 and the plurality of fourth protrusions 20 are not constrained by the mutual arrangement, and the plurality of second protrusions 18 and the plurality of third protrusions 19. Are not constrained by each other's arrangement. Thereby, the number and arrangement of the first convex portions 17, the second convex portions 18, the third convex portions 19, and the fourth convex portions 20 can be set as necessary.

  DESCRIPTION OF SYMBOLS 1 ... Heat-transfer plate, 10 ... Plate main body, 11 ... 1st opening, 12 ... 2nd opening, 13 ... 1st seal plan part, 14 ... 2nd seal plan part, 15 ... 1st annular seal plan part, 16 ... Second annular seal planned part, 17 ... first convex part, 18 ... second convex part, 19 ... third convex part, 20 ... fourth convex part, 21 ... fifth convex part, 22 ... sixth convex part, 130 ... 1st direction change part, 130a ... 1st turn part, 130b, 130c ... 1st extension part, 131 ... 1st connection part, 140 ... 2nd direction change part, 140a ... 2nd turn part, 140b, 140c ... 1st Two extension portions, 141 ... second connection portion, A ... first fluid, B ... second fluid, CA ... intermediate region, CA1 ... intermediate central region, CA2 ... intermediate end region, CA2a ... end central region, CA2b ... Side region, CL1 ... Vertical center line, CL2 ... Horizontal center line, EA ... End region, G ... Gasket , HE ... plate type heat exchanger, P1 ... first flow path, P1a ... first inflow path, P1b ... first outflow path, P2 ... second flow path, P2a ... second inflow path, P2b ... second outflow path, PP1 ... 1st channel plan area, PP2 ... 2nd channel plan area, S1 ... 1st surface, S2 ... 2nd surface

Claims (5)

  A plate body that divides a first flow path for flowing a first fluid and a second flow path for flowing a second fluid, the first face in the first direction and the second face facing away from the first face And is continuous with the intermediate region on both sides of the intermediate region in the second direction including the first surface and the second surface and perpendicular to the first direction. A plate main body having a pair of end regions, the plate main body being in the same region by two first openings penetrating each of the pair of end regions in the first direction and each of the pair of end regions. Two second openings that are spaced apart in a first direction and a third direction orthogonal to the second direction with respect to a certain first opening, and penetrate each of the pair of end regions in the first direction, and the first surface The two first openings in the pair of end regions are collectively surrounded by a pair of end regions on the first surface. A first seal planned portion that delimits a first flow path planned region that expands in the third direction as it goes toward the intermediate region, and is the largest in the intermediate region, and two second seals in a pair of end regions on the second surface. Encloses the two openings at once, expands in the third direction as it goes to the intermediate region at each of the pair of end regions on the second surface, maximizes in the intermediate region, and at least in the first region on the first surface in the intermediate region A region near the boundary between the second seal scheduled region that defines the second channel planned region that overlaps the one channel planned region and each of the pair of end regions in the intermediate region of the first channel planned region, A plurality of at least one region in the middle region that is disposed in the immediate vicinity of each of the pair of first openings, extends in a direction intersecting the lateral center line extending in the third direction, and forms a predetermined angle with respect to the lateral center line; First convex part and first flow path The fixed region is a region near the boundary with each of the pair of end regions in the intermediate region, and is disposed at least in a region far from each of the pair of first openings in the intermediate region. Of the pair of end regions in the intermediate region among the plurality of second convex portions extending in the intersecting direction and having an angle greater than the first convex portion with respect to the lateral center line and the second flow path planned region A region in the vicinity of the boundary between each of them and at least in a region immediately adjacent to each of the pair of second openings in the intermediate region, and extending in a direction intersecting the transverse center line extending in the third direction; A region in the vicinity of the boundary between the plurality of third convex portions that form a predetermined angle with respect to the center line and each of the pair of end regions in the intermediate region among the second flow path planned region, and a pair in the intermediate region Second opening A plurality of fourth protrusions that are arranged at least in regions far from each other, extend in a direction intersecting the horizontal center line, and have an angle with respect to the horizontal center line larger than that of the third protrusion. A heat transfer plate for a plate-type heat exchanger.   The first opening and the second opening in each of the pair of end regions are arranged symmetrically with respect to the lateral center line, and the first opening and the second opening in the same end region are the second Are arranged symmetrically with respect to a longitudinal center line extending in the direction, and the plurality of first protrusions on the first surface are arranged between the plurality of fourth protrusions on the second surface, The heat transfer plate for a plate heat exchanger according to claim 1, wherein the second convex portion is disposed between the plurality of third convex portions on the second surface.   The plate body according to claim 1 or 2, wherein the plate body is formed by press molding, and the back side of each of the first convex portion, the second convex portion, the third convex portion, and the fourth convex portion is a concave portion. Heat transfer plate for heat exchanger.   The plate body is a region in the vicinity of the boundary with each of the pair of end regions in the intermediate region in the first flow path planned region, and the region closest to the first opening in the intermediate region and the first opening Is disposed at least in a region between the region far from the region, extends in a direction intersecting the horizontal center line, and has an angle with respect to the horizontal center line larger than that of the first convex portion and larger than that of the second convex portion. Among the plurality of fifth convex portions having a small angle and the second flow path planned region, each of the regions near the boundary between the pair of end regions in the intermediate region, with respect to the second opening in the intermediate region It is arranged at least in a region between a region located nearest to the second opening and a region far from the second opening, extends in a direction intersecting the transverse center line, and has an angle with respect to the transverse center line from the third convex portion. Larger and smaller corner than the fourth convex part A plurality of sixth projections and further comprising in that the first to third aspects plate heat exchanger heat transfer plate according to any one of the forming the.   5. A plurality of heat transfer plates for the plate heat exchanger according to claim 1, wherein the heat transfer plates for the plurality of plate heat exchangers are overlapped in one direction, and one side in one direction The first surfaces of the plate main bodies in the heat transfer plates for adjacent plate heat exchangers are opposed to each other, and the second surfaces of the plate main bodies in the heat transfer plates for the plate heat exchanger adjacent on the other side in one direction are opposed to each other. The first flow path through which the first fluid is allowed to flow and the first fluid is allowed to flow is formed, and the second fluid seal is sealed between the opposite second seal scheduled portions. A plate-type heat exchanger, wherein two flow paths are formed.

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