Cup plate lamination type heat exchanger

Abstract

To provide a cup plate laminated heat exchanger advantageous for improving heat exchange efficiency while reducing cost.SOLUTION: The inside diameter 3216H of the first fluid supply passage 46, which is determined by the inside diameter D1 of the first fluid supply passage hole formed in the third cup plate 32, is smaller than the inside diameter D2 of the first fluid inlet opening 34, which is determined by the inside diameter LA of the hole formed in the first cup plate 14. Since the first fluid flows from the inlet opening 34 having a large cross-sectional area to the first fluid supply path 46 having a small cross-sectional area, the flow velocity of the first fluid is increased. Since the flow velocity of the first fluid is increased in the first fluid supply path 46, the first fluid flows from the first fluid supply path 46 to each of the plurality of first fluid circulation layers 42 at a substantially uniform flow rate without being biased.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cup plate stacked type heat exchanger. [Background technology]

[0002] A cup plate stacked type heat exchanger has been proposed, which has a core body in which multiple cup plates are stacked alternately, and between adjacent cup plates, first fluid circulation layers for circulating a first fluid (cooling water) and second fluid circulation layers for circulating a second fluid (oil) that exchanges heat with the first fluid are formed alternately in the stacking direction (see Patent Document 1). The core body is provided with a first fluid supply passage that is coaxial with the inlet and communicates with the inlet and that is connected to the first fluid flow layer, extending in the stacking direction, and the multiple cup plates are provided with first fluid supply passage holes to form the first fluid supply passage, and a first fluid discharge passage that is coaxial with the outlet and communicates with the outlet and that is connected to the first fluid flow layer, extending in the stacking direction, and the multiple cup plates are provided with first fluid discharge passage holes to form the first fluid discharge passage. In this cup plate stacked heat exchanger, the diameter of the holes for the first fluid supply paths in the multiple cup plates is configured to gradually increase from the upstream side to the downstream side of the first fluid, and the diameter of the holes for the first fluid discharge paths is configured to gradually decrease from the upstream side to the downstream side of the first fluid, thereby achieving a uniform flow rate distribution of the first fluid flowing through each first fluid flow layer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration Publication No. 2516357 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional technology, since the multiple cup plates each have different diameters for the first fluid supply path hole and the first fluid discharge path hole, there is a concern that the number of cup plate types will increase and the configuration will become more complex, resulting in increased costs. The present invention has been made in consideration of the above circumstances, and aims to provide a cup plate stacked type heat exchanger that is advantageous in improving the heat exchange efficiency between the first fluid and the second fluid while reducing costs. [Means for solving the problem]

[0005] In order to achieve the above object, one embodiment of the present invention includes a core body 12 in which a plurality of second cup plates 30 and a plurality of third cup plates 32 are alternately stacked, with first fluid circulation layers 42 and second fluid circulation layers 44 alternately formed between adjacent second and third cup plates 30, 32 in the stacking direction; a first cup plate 14 stacked on the second cup plate 30 located at one end of the core body 12 in the stacking direction; and a top plate 16 stacked on the first cup plate 14 and provided with an inlet 16A for a first fluid and an outlet 16B for a first fluid, and the first cup plate 14 has a first fluid inlet 16A and a second fluid outlet 16B. a first fluid supply passage 46 that is coaxial with the inlet opening 34 and communicates with the first fluid circulation layer 42 and extends in the stacking direction in the core body 12; and the second and third cup plates 30, 32 are provided with first fluid supply passage holes 3016H, 3216H that constitute the first fluid supply passage 46, wherein the inner diameter D1 of the first fluid supply passage holes 3016H, 3216H is smaller than the inner diameter D2 of the inlet opening 34 of the first cup plate 14. Moreover, one embodiment of the present invention includes a core body 12 in which a plurality of round second cup plates 30 and a plurality of round third cup plates 32 are alternately stacked, with first fluid circulation layers 42 and second fluid circulation layers 44 alternately formed between adjacent second and third cup plates 30, 32 in the stacking direction; a round first cup plate 14 stacked on the second cup plate 30 located at one end of the core body 12 in the stacking direction; and a top plate 16 stacked on the first cup plate 14 and provided with an inlet 16A for a first fluid and an outlet 16B for a first fluid, the first cup plate 14 being provided with an inlet opening 34 communicating with the inlet 16A for the first fluid and an outlet opening 36 communicating with the outlet 16B for the first fluid, and the core body 12 being provided with an inlet opening 34 and an outlet opening 36 communicating with the outlet 16B for the first fluid, and the core body 12 being provided with an inlet opening 34 and an outlet opening 36 communicating with the inlet opening 34 and an outlet opening 36 communicating with the outlet 16B for the first fluid. a first fluid supply path hole 3008, 3208 constituting the first fluid supply path 46 is provided in the second and third cup plates 30, 32, the first fluid supply path hole 3208 provided in the third cup plate 32 is formed by an inner peripheral surface 3212A of an annular first burring portion 3212 protruding in a direction away from the first cup plate 14, and the inner peripheral portion 3008A of the first fluid supply path hole 3008 of the second cup plate 30 is fitted into the outer peripheral surface 3212B of the first burring portion 3212, and the cup plate stacked type heat exchanger is characterized in that an inner diameter D1 of the first burring portion 3212 is smaller than an inner diameter D2 of the inlet opening 34 of the first cup plate 14. In one embodiment of the present invention, the first cup plate 14 is provided with an outlet opening 36 for the first fluid, and the outlet opening 36 is formed by an inner peripheral surface 1404A of an annular second burring portion 1404 provided on the first cup plate 14 and protruding toward the core body 12, the inlet opening 34 and the outlet opening 36 are provided at positions that are 180 degrees out of phase with each other about the center of the first cup plate 14, and the core body 12 is provided with a first fluid discharge path 48 that communicates with the outlet opening 36 and extends in the stacking direction, and The three cup plates 30, 32 are provided with first fluid discharge path holes 3010, 3210 for configuring the first fluid discharge path 48, and the first fluid discharge path hole 3210 provided in the third cup plate 32 is formed by an inner peripheral surface 3214A of an annular third burring portion 3214 having an outer peripheral surface 3214B of substantially the same shape as an outer peripheral surface 1404B of the second burring portion 1404, and an inner peripheral portion 3010A of the first fluid discharge path hole 3010 of the second cup plate 30 is formed by the outer peripheral surfaces 1404B of the second burring portion 1404 and the third burring portion 3214, 3214B, and outer diameters D4 and D5 of the second burring portion 1404 and the third burring portion 3214 are formed to be larger than the inner diameter D3 of the first fluid supply path hole 3008 of the second cup plate 30, and further, the core body 12 is provided with a second fluid supply path 50 and a second fluid discharge path 52 extending in the stacking direction at positions that are 180 degrees out of phase with each other about the center of the first cup plate 14, and the second and third cup plates 30, 32 are provided with outer diameters D5 and D6 of the second fluid supply path 50 and the second fluid discharge path 52 that are substantially the same inner diameter D7 and that constitute one of the second fluid supply path 50 and the second fluid discharge path 52. First holes 3014, 3218 for a second fluid are provided, the peripheral portions of which are joined to each other, and the second hole for a second fluid constituting the other of the second fluid supply path 50 and the second fluid discharge path 52 provided in the second cup plate 30 is formed by an inner peripheral surface 3016A of an annular fourth burring portion 3016 protruding in a direction away from the first cup plate 14, and the inner peripheral portion 3216A of the second hole for a second fluid 3216 constituting the other of the second fluid supply path 50 and the second fluid discharge path 52 provided in the third cup plate 32 is fitted into an outer peripheral surface 3016B of the fourth burring portion 3016,The outer diameter D6 of the fourth burring portion 3016 is larger than the inner diameter D7 of the first hole 3218 for second fluid which constitutes one of the second fluid supply path 50 and the second fluid discharge path 52 provided in the third cup plate 32. In one embodiment of the present invention, the first fluid is cooling water, and the second fluid is oil. [Effects of the Invention]

[0006] According to one embodiment of the present invention, the first fluid flows from the inlet opening 34, which has a large cross-sectional area, to the first fluid supply path 46, which has a small cross-sectional area. As a result, the flow rate of the first fluid is increased in the first fluid supply path 46, and the first fluid flows from the first fluid supply path 46 to each of the multiple first fluid circulation layers 42 at an approximately uniform flow rate without any bias. Therefore, the number of types of cup plates can be reduced, which is advantageous in terms of increasing the heat exchange efficiency between the first fluid and the second fluid while reducing the cost of the cup plate stacked heat exchanger. Furthermore, according to one embodiment of the present invention, when assembling the second cup plate 30 and the first cup plate 14, it is prevented that the hole 3008 for the first fluid supply path of the second cup plate 30 is mistakenly assembled to the outer peripheral surface 1404B of the second burring portion 1404 of the first cup plate 14; and when assembling the second cup plate 30 and the third cup plate 32, it is prevented that the hole 3008 for the first fluid supply path of the second cup plate 30 is mistakenly assembled to the outer peripheral surface 3214B of the third burring portion 3214 of the third cup plate 32; and it is prevented that the first hole 3218 for the second fluid of the third cup plate 32 is mistakenly assembled to the outer peripheral surface 3016B of the fourth burring portion 3016 of the second cup plate 30, which is advantageous in improving the efficiency of the manufacturing work of cup plate stacked type heat exchangers. Furthermore, according to one embodiment of the present invention, the first fluid is cooling water and the second fluid is oil, so that the cooling water flows from the first fluid supply path 46 to each of the multiple first fluid flow layers 42 at a substantially uniform flow rate without bias, which is advantageous in improving the heat exchange efficiency between the cooling water and oil in the cup plate stacked type heat exchanger. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a cross-sectional view of a cup plate stacked type heat exchanger according to a first embodiment. [Figure 2] FIG. 10 is a perspective view showing a cup plate stacked type heat exchanger according to a second embodiment. [Figure 3] FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. [Figure 4] FIG. 3 is a cross-sectional view taken along line BB in FIG. 2. [Figure 5] 1A is a plan view of the second cup plate, FIG. 1B is a cross-sectional view taken along line BB in FIG. 1A, and FIG. 1C is a cross-sectional view taken along line CC in FIG. [Figure 6] 1A is a plan view of the third cup plate, FIG. 1B is a cross-sectional view taken along line BB in FIG. 1A, and FIG. 1C is a cross-sectional view taken along line CC in FIG. [Figure 7] 4 is an enlarged cross-sectional view of the vicinity of an inlet pipe 22 in FIG. 3. [Figure 8] FIG. 4 is an enlarged cross-sectional view of the vicinity of an outflow pipe 24 in FIG. 3. DETAILED DESCRIPTION OF THE INVENTION

[0008] (First embodiment) A first embodiment of the present invention will be described with reference to FIG. In the first embodiment, the cup-plate stacked type heat exchanger is used in an automobile to exchange heat between a first fluid (e.g., coolant for cooling the engine) and a second fluid (e.g., transmission oil). As shown in Figure 1, the cup plate stacked heat exchanger 10 comprises a core body 12, a first cup plate 14 attached to the upper surface of the core body 12, a top plate 16 attached to the upper surface of the first cup plate 14, a bottom plate 18 attached to the lower surface of the core body 12, and a base plate 20 attached to the lower surface of the bottom plate 18. The core body 12, first cup plate 14, top plate 16, bottom plate 18, and base plate 20 are circular in plan view. However, in this embodiment, their shapes are not limited to circular in plan view, and various conventional shapes such as rectangular can be used.

[0009] The top plate 16 is provided with an inlet pipe 22 for the first fluid and an outlet pipe 24 for the first fluid; in other words, the top plate 16 is provided with an inlet 16A for the first fluid and an outlet 16B for the first fluid. The first cup plate 14 is attached to the second cup plate 30 which forms the upper surface of the core body 12, and the first cup plate 14 is provided with a first fluid inlet opening 34 which communicates with the first fluid inlet 16A, a first fluid outlet opening 36 which communicates with the first fluid outlet 16B, and an inclined plate portion 1402 is provided on the outer periphery of the first cup plate 14.

[0010] The core body 12 is formed by alternately stacking a plurality of second cup plates 30 of the same shape and size and a plurality of third cup plates 32 of the same shape and size but different in shape from the second cup plates 30, and between the adjacent second and third cup plates 30, 32, first fluid circulation layers 42 for circulating a first fluid and second fluid circulation layers 44 for circulating a second fluid that exchanges heat with the first fluid are alternately formed in the stacking direction. The inclined plate portion 1402 of the first cup plate 14 and the inclined plate portions 3004 and 3204 of the second and third cup plates 30 and 32 are joined together. The core body 12 is provided with a first fluid supply passage 46 that is coaxial with the first fluid inlet opening 34 and communicates with the first fluid inlet opening 34, extending in the direction in which the second cup plate 30 and the third cup plate 32 are stacked, and a first fluid discharge passage 48 that is coaxial with the first fluid outlet opening 36 and communicates with the first fluid outlet opening 36, extending in the direction in which the second cup plate 30 and the third cup plate 32 are stacked.

[0011] The first fluid supply path 46 is formed by a first fluid supply path hole 3016H provided in the second cup plate 30 and a first fluid supply path hole 3216H provided in the third cup plate. In addition, since the inner diameter of the first fluid supply path hole 3216H provided in the third cup plate 32 is smaller than the inner diameter of the first fluid supply path hole 3016H provided in the second cup plate 30, the first fluid supply path 46 is essentially formed by the first fluid supply path hole 3216H provided in the third cup plate 32. In the second cup plate 30, in order to form the second fluid circulation layer 44 between it and the third cup plate 32, the second cup plate 30 is formed in a flat plate shape to ensure a gap between it and the third cup plate 32, except for the first fluid supply path 46 and the first fluid discharge path 48, and at the locations of the first fluid supply path 46 and the first fluid discharge path 48, it rises toward the third cup plate 32, and the area around the first fluid supply path hole 3016H is joined to the area around the first fluid supply path hole 3214H of the third cup plate 32. The inner diameter D1 of the first fluid supply path 46 determined by the first fluid supply path hole 3216H provided in the third cup plate 32 is formed smaller than the inner diameter D2 of the first fluid inlet opening 34 determined by the hole 1416H in the first cup plate 14. The inlet pipe, inlet opening, outlet opening, and outlet pipe for the second fluid are the same as those of the conventional device, and therefore will not be described.

[0012] According to this embodiment, the first fluid is supplied from the inlet pipe 22 to the first fluid supply passage 46 of the core body 12 via the first fluid inlet opening 34 of the first cup plate 14, flows from the first fluid supply passage 46 into each of the multiple first fluid circulation layers 42, is discharged from each of the multiple first fluid circulation layers 42 to the first fluid discharge passage 48, and reaches the outlet pipe 24 from the first fluid discharge passage 48 via the first fluid outlet opening 36 of the first cup plate 14. In this case, the inner diameter D1 of the first fluid supply path 46 determined by the first fluid supply path hole 3216H provided in the third cup plate 32 is formed smaller than the inner diameter D2 of the first fluid inlet opening 34 determined by the hole in the first cup plate 14. Therefore, the first fluid flows from the inlet opening 34 with a large cross-sectional area to the first fluid supply path 46 with a small cross-sectional area, and the flow rate is increased. By increasing the flow velocity of the first fluid in the first fluid supply channel 46, the first fluid flows from the first fluid supply channel 46 to each of the plurality of first fluid flow layers 42 at a substantially uniform flow rate without bias. Therefore, compared to conventional technology in which the diameters of the first fluid supply path holes and the first fluid discharge path holes provided in multiple cup plates are configured to be different, the number of types of cup plates can be reduced, which is advantageous in reducing the cost of the cup plate stacked heat exchanger 10 while increasing the heat exchange efficiency between the first fluid and the second fluid.

[0013] (Second embodiment) Next, a second embodiment will be described. In the following embodiments, parts and members similar to those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted, and the description will focus on the differences. In the second embodiment, as in the first embodiment, the cup-plate stacked heat exchanger is used in automobiles to exchange heat between a first fluid (e.g., cooling water for cooling the engine) and a second fluid (e.g., transmission oil). As shown in Figure 3, the cup plate stacked heat exchanger 10 comprises a core body 12, a first cup plate 14 attached to the upper surface of the core body 12, a top plate 16 attached to the upper surface of the first cup plate 14, a bottom plate 18 attached to the lower surface of the core body 12, and a base plate 20 attached to the lower surface of the bottom plate 18. The core body 12, the first cup plate 14, the top plate 16, the bottom plate 18, and the base plate 20 are circular in plan view. In other words, the first cup plate 14 and the second and third cup plates 30, 32 (described later) that constitute the core body 12 are round.

[0014] As shown in FIG. 2, the top plate 16 is provided with an inlet pipe 22 for the first fluid and an outlet pipe 24 for the first fluid; in other words, the top plate 16 is provided with an inlet 16A for the first fluid and an outlet 16B for the first fluid. As shown in FIGS. 3 and 4, the base plate 20 is provided with an inlet 26 for the second fluid and an outlet 28 for the second fluid, and the top plate 16 is provided with an inclined plate portion 1602 on the outer periphery thereof. As shown in Figure 3, the first cup plate 14 is attached to the second cup plate 30 that forms the upper surface of the core body 12, and the first cup plate 14 is provided with a first fluid inlet opening 34 that communicates with the first fluid inlet 16A, a first fluid outlet opening 36 that communicates with the first fluid outlet 16B, a first fluid inlet pipe 22, and an inclined plate portion 1402 on the outer periphery of the first cup plate 14. As shown in Figure 4, the first cup plate 14 is provided with a second fluid intermediate discharge hole 1408 for forming the second fluid intermediate discharge path 52 described later, and a second fluid discharge hole 1410 for forming the second fluid discharge path 54 described later. As shown in FIG. 8, the outlet opening 36 for the first fluid is formed by the inner peripheral surface 1404A of the annular second burring portion 1404 provided on the first cup plate 14 and protruding toward the core body 12 side. As shown in FIG. 4, the bottom plate 18 is provided with a second fluid inlet 38 that communicates with the second fluid inlet 26 of the base plate 20, and also with a second fluid outlet 40 that communicates with the second fluid outlet 28, and an inclined plate portion 1802 is provided on the outer periphery of the bottom plate 18. As shown in FIG. 3, the bottom plate 18 is provided with a first fluid supply hole 1804 for forming the first fluid supply path 46 described later, and a first fluid discharge hole 1806 for forming the first fluid discharge path 48. As shown in FIG. 4, the bottom plate 18 is provided with a second fluid supply hole 1808 for forming the second fluid supply path 50 described later, a second fluid intermediate discharge hole 1810 for forming the second fluid intermediate discharge path 52, and a second fluid discharge hole 1812 for forming the second fluid discharge path 54.

[0015] As shown in Figure 3, the core body 12 is formed by alternately stacking a plurality of second cup plates 30 of the same shape and size and a plurality of third cup plates 32 of the same shape and size but different in shape from the second cup plates 30, and between adjacent second and third cup plates 30, 32, first fluid circulation layers 42 through which a first fluid flows and second fluid circulation layers 44 through which a second fluid that exchanges heat with the first fluid flows are alternately formed in the stacking direction. The core body 12 is provided with a first fluid supply passage 46 that is coaxial with the first fluid inlet opening 34 and communicates with the first fluid inlet opening 34, extending in the direction in which the second cup plate 30 and the third cup plate 32 are stacked, and a first fluid discharge passage 48 that is coaxial with the first fluid outlet opening 36 and communicates with the first fluid outlet opening 36, extending in the direction in which the second cup plate 30 and the third cup plate 32 are stacked. As shown in FIG. 4, the core body 12 is provided with a second fluid supply passage 50 that is coaxial with the second fluid inlet 38 and communicates with the second fluid inlet 38, and that extends in the direction in which the second cup plate 30 and the third cup plate 32 are stacked. In addition, the core body 12 is provided with a second fluid intermediate discharge passage 52 communicating with the second fluid supply passage 50, and a second fluid discharge passage 54 coaxial with the second fluid outlet 40 and communicating with the second fluid outlet 40, extending in the direction in which the second cup plate 30 and the third cup plate 32 are stacked. The second fluid intermediate discharge path 52 and the second fluid discharge path 54 are connected by a flow path 56 provided between the top plate 16 and the first cup plate 14 . The first fluid flow layer 42 is connected to the first fluid supply path 46 and the first fluid discharge path 48, and is isolated from the second fluid flow layer 44, the second fluid supply path 50, the second fluid intermediate discharge path 52, and the second fluid discharge path 54. The second fluid flow layer 44 is connected to the second fluid supply path 50, the second fluid intermediate discharge path 52, and the second fluid discharge path 54, and is isolated from the first fluid flow layer 42, the first fluid supply path 46, and the first fluid discharge path 48. 3 and 4, reference numeral 58 denotes fins provided on the second cup plate 30 and the bottom plate 18 to improve the heat transfer performance during heat exchange between the first fluid and the second fluid.

[0016] As shown in Figures 5(A), (B), and (C), the second cup plate 30 has a flat first circular plate portion 3002 and a first inclined plate portion 3004 provided around the periphery of the first circular plate portion 3002. A second fluid discharge path hole 3006 for forming the second fluid discharge path 54 is provided in the center of the first circular plate portion 3002. In addition, on both sides of the second fluid discharge path hole 3006 on a diameter passing through the center of the first circular plate portion 3002, a first fluid supply path hole 3008 for forming the first fluid supply path 46 and a first fluid discharge path hole 3010 for forming the first fluid discharge path 48 are provided. In addition, on both sides of the second fluid discharge path hole 3006 on a diameter passing through the center of the first circular plate portion 3002, a second fluid supply path hole 3012 for forming the second fluid supply path 50 and a second fluid intermediate discharge path hole 3014 for forming the second fluid intermediate discharge path 52 are provided. The first fluid supply path hole 3008 and the first fluid discharge path hole 3010 are arranged circumferentially with a phase shift of 90 degrees relative to the second fluid supply path hole 3012 and the second fluid intermediate discharge path hole 3014, with the second fluid discharge path hole 3006 as the center. Since the first fluid supply path 46 is arranged coaxially with the inlet opening 34 for the first fluid and the first fluid discharge path 48 is arranged coaxially with the outlet opening 36 for the first fluid, the inlet opening 34 for the first fluid and the outlet opening 36 for the first fluid are arranged at positions that are 180 degrees out of phase with each other around the center of the first cup plate 14. As shown in FIG. 5(C), the second fluid supply path hole 3012 is formed by an inner peripheral surface 3016A of an annular fourth burring portion 3016 that protrudes in a direction away from the first cup plate .

[0017] As shown in FIGS. 6(A), (B), and (C), the third cup plate 32 includes a flat second circular plate portion 3202 and a second inclined plate portion 3204 provided around the periphery of the second circular plate portion 3202. A second fluid discharge path hole 3206 for forming the second fluid discharge path 54 is provided in the center of the second circular plate portion 3202. Around the second fluid discharge path hole 3206, a protruding ridge 3220 protruding toward the first cup plate 14 and a plurality of protrusions 3222 are provided. The protruding ridge portion 3220 extends in a circular shape around the second fluid discharge path hole 3206 with the center of the second fluid discharge path hole 3206 as the center. The multiple protrusions 3222 are provided on the outside of the protrusion portion 3220, and are alternately provided on a circumference of a first radius centered on the center of the second fluid discharge path hole 3206 and on a circumference of a second radius larger than the first radius. In addition, on both sides of the second fluid discharge path hole 3206 on a diameter passing through the center of the second circular plate portion 3202, a first fluid supply path hole 3208 for forming the first fluid supply path 46 and a first fluid discharge path hole 3210 for forming the first fluid discharge path 48 are provided. As shown in FIG. 6(B), the first fluid supply path hole 3208 provided in the third cup plate 32 is formed by the inner circumferential surface 3212A of the annular first burring portion 3212 that protrudes in a direction away from the first cup plate 14. In addition, the hole 3210 for the first fluid discharge path provided in the third cup plate 32 is formed by the inner surface 3214A of the annular third burring portion 3214 that protrudes in a direction away from the first cup plate 14 and has an outer surface 3214B that is approximately the same shape as the outer surface 1404B of the second burring portion 1404. In addition, on both sides of the second fluid discharge path hole 3206 on a diameter passing through the center of the second circular plate portion 3202, a second fluid supply path hole 3216 for forming the second fluid supply path 50 and a second fluid intermediate discharge path hole 3218 for forming the second fluid intermediate discharge path 52 are provided. The first fluid supply path hole 3208 and the first fluid discharge path hole 3210 are arranged circumferentially with a phase shift of 90 degrees with respect to the second fluid supply path hole 3216 and the second fluid intermediate discharge path hole 3218, with the second fluid discharge path hole 3206 as the center. In other words, the second fluid supply path 50 and the second fluid intermediate discharge path 52 are arranged at locations that are 180 degrees out of phase with each other around the center of the first cup plate 14, and extend in the direction in which the first fluid circulation layer 42 and the second fluid circulation layer 44 are stacked.

[0018] As shown in FIG. 3, in the core body 12, the second cup plate 30 and the third cup plate 32 are joined together with the first inclined plate portions 3004 and the second inclined plate portions 3204 alternately overlapping each other. Furthermore, the top of the protruding stripe 3220 and the tops of the plurality of protrusions 3222 of the third cup plate 32 are joined to the lower surface of the first circular plate portion 3002 of the second cup plate 30 directly above. As shown in FIG. 7, at the portion of the core body 12 where the first fluid supply passage 46 is located, the first fluid circulation layer 42 is connected to the first fluid supply passage 46, and the inner peripheral portion 3008A of the first fluid supply passage hole 3008 of the second cup plate 30 is fitted into the outer peripheral surface 3212B of the first burring portion 3212 of the third cup plate 32, thereby isolating the first fluid supply passage 46 from the second fluid circulation layer 44. That is, at the location of the core body 12 where the first fluid supply passage 46 is located, the inner surfaces 3212A of the first burring portions 3212 of the multiple third cup plates 32 are arranged at equal intervals in the extension direction of the first fluid supply passage 46, and the first fluid supply passage 46 is formed via the inner surfaces 3212A of the first burring portions 3212 of the multiple third cup plates 32, and the first fluid circulation layer 42 is connected to the first fluid supply passage 46 between the inner surfaces 3212A of the first burring portions 3212 adjacent to each other vertically. In addition, the second cup plate 30, which is located at the top of the core body 12, has the outer peripheral portion 3008A of the first fluid supply path hole 3008 joined to the outer peripheral underside of the first fluid inlet opening 34 of the first cup plate 14, thereby blocking the second fluid circulation layer 44 formed between the first cup plate 14 and the second cup plate 30 and the first fluid supply path 46. Also, as shown in Figure 3, the inner peripheral portion of the first fluid supply hole 1804 of the bottom plate 18 is fitted into the outer peripheral surface 3212B of the first burring portion 3212 of the third cup plate 32, which is located at the lowest position of the core body 12, and the second fluid circulation layer 44 formed between the bottom plate 18 and the third cup plate 32 and the first fluid supply path 46 are blocked.

[0019] As shown in FIG. 8, at the portion of the core body 12 where the first fluid discharge path 48 is located, the first fluid circulation layer 42 is connected to the first fluid discharge path 48, and the inner peripheral portion 3010A of the first fluid discharge path hole 3010 of the second cup plate 30 is fitted into the outer peripheral surface 3214B of the third burring portion 3214 of the third cup plate 32, thereby isolating the first fluid discharge path 48 from the second fluid circulation layer 44. That is, at the location of the core body 12 where the first fluid discharge passage 48 is located, the inner surfaces 3214A of the third burring portions 3214 of the multiple third cup plates 32 are arranged at equal intervals in the extension direction of the first fluid discharge passage 48, and the first fluid discharge passage 48 is formed via the inner surfaces 3214A of the third burring portions 3214 of the multiple third cup plates 32, and the first fluid circulation layer 42 is connected to the first fluid discharge passage 48 between the inner surfaces 3214A of adjacent third burring portions 3214 in the vertical direction. In addition, the second cup plate 30, which is located at the top of the core body 12, has the inner peripheral portion 3010A of the first fluid discharge path hole 3010 engaged with the outer peripheral surface 1404B of the second boring portion 1404 of the first cup plate 14, thereby blocking the second fluid circulation layer 44 formed between the first cup plate 14 and the second cup plate 30 and the first fluid discharge path 48. Also, as shown in Figure 3, the inner peripheral portion 1806A of the first fluid discharge hole 1806 of the bottom plate 18 is fitted into the outer peripheral surface 3214B of the third burring portion 3214 of the third cup plate 32, which is located at the lowest position of the core body 12, and the second fluid circulation layer 44 and the first fluid discharge path 48 formed between the bottom plate 18 and the third cup plate 32 are blocked.

[0020] As shown in FIG. 4, the second fluid flow layer 44 is connected to the second fluid supply path 50 at the location of the core body 12 where the second fluid supply path 50 is located, and the inner peripheral portion 3216A of the second fluid supply path hole 3216 of the third cup plate 32 is fitted into the outer peripheral surface 3016B of the fourth boring portion 3016 of the second cup plate 30, thereby isolating the second fluid supply path 50 from the first fluid flow layer 42. That is, at the location of the core body 12 where the second fluid supply passage 50 is located, the inner surfaces 3016A of the fourth burring portions 3016 of the multiple second cup plates 30 are arranged at equal intervals in the extension direction of the second fluid supply passage 50, and the second fluid supply passage 50 is formed via the inner surfaces 3016A of the fourth burring portions 3016 of the multiple second cup plates 30, and the second fluid circulation layer 44 is connected to the second fluid supply passage 50 between the inner surfaces 3016A of adjacent fourth burring portions 3016 in the vertical direction. In other words, the second fluid supply passage 50 provided in the second cup plate 30 is formed by the inner circumferential surface 3016A of the annular fourth burring portion 3016 that protrudes in a direction away from the first cup plate 14. Therefore, an inner surface 3016A of a fourth burring portion 3016 serving as a second hole for the second fluid that constitutes the second fluid supply path 50 is formed in the second cup plate 30, and a second fluid supply path hole 3216 serving as a second hole for the second fluid that constitutes the second fluid supply path 50 is formed in the third cup plate 32.

[0021] As shown in FIG. 4 , at the portion of the core body 12 where the second fluid intermediate discharge path 52 is located, the second fluid circulation layer 44 is connected to the second fluid intermediate discharge path 52, and the outer peripheral portion 3218A of the second fluid intermediate discharge path hole 3218 of the third cup plate 32 is joined to the underside of the outer peripheral portion 3014A of the second fluid intermediate discharge path hole 3014 of the second cup plate 30, thereby isolating the second fluid intermediate discharge path 52 from the first fluid circulation layer 42. Here, the second intermediate fluid discharge path hole 3014 and the second intermediate fluid discharge path hole 3218 are provided with substantially the same inner diameter D7. That is, at the portion of the core body 12 where the second fluid intermediate discharge passage 52 is located, the outer periphery 3014A of the second fluid intermediate discharge passage hole 3014 of the second cup plate 30 joined to each other and the outer periphery 3218A of the second fluid intermediate discharge passage hole 3218 of the third cup plate 32 are arranged at equal intervals in the extending direction of the second fluid intermediate discharge passage 52, and the outer periphery 3014A of the second fluid intermediate discharge passage hole 3218 of the second cup plate 30 joined to each other ... A second fluid intermediate discharge path 52 is formed via the outer peripheral portion 3014A and the outer peripheral portion 3218A of the second fluid intermediate discharge path hole 3218 of the third cup plate 32, and the second fluid circulation layer 44 is connected to the second fluid intermediate discharge path 52 between the outer peripheral portion 3014A of the second fluid intermediate discharge path hole 3014 of the second cup plates 30 that are joined together and adjacent to each other vertically and vertically and the outer peripheral portion 3218A of the second fluid intermediate discharge path hole 3218 of the third cup plate 32. In other words, the second fluid intermediate discharge path holes 3014 and 3218 are formed in the second and third cup plates 30 and 32, respectively, as first holes for second fluid that constitute the second fluid intermediate discharge path 52.

[0022] Furthermore, as shown in FIG. 4, the first fluid circulation layer 42 and the second fluid circulation layer 44 are blocked from the second fluid discharge path 54 at the portion of the core body 12 where the second fluid discharge path 54 is located. At the location of the core body 12 where the second fluid discharge path 54 is located, the outer peripheral portion 3006A of the second fluid discharge path hole 3006 of the second cup plate 30 and the outer peripheral portion 3206A of the second fluid discharge path hole 3206 of the third cup plate 32 are joined. That is, at the location of the core body 12 where the second fluid discharge path 54 is located, the outer peripheral portions 3006A of the second fluid discharge path holes 3006 of the second cup plates 30 that are joined together and the outer peripheral portions 3206A of the second fluid discharge path holes 3206 of the third cup plates 32 that are joined together are arranged at equal intervals in the extension direction of the second fluid discharge path 54, and the second fluid discharge path 54 is formed via the outer peripheral portions 3006A of the second fluid discharge path holes 3006 of the second cup plates 30 that are joined together and the outer peripheral portions 3206A of the second fluid discharge path holes 3206 of the third cup plates 32. In addition, the top of the protrusion portion 3220 of the third cup plate 32 is joined to the underside of the first circular plate portion 3002 of the second cup plate 30 directly above, thereby blocking the first fluid circulation layer 42 and the second fluid circulation layer 44 from the second fluid discharge path 54. The outer periphery 3006A of the second fluid discharge path hole 3006 of the second cup plate 30 located at the top of the core body 12 is joined to the outer periphery of the second fluid discharge hole 1410 of the first cup plate . Furthermore, the outer periphery 3206A of the second fluid discharge path hole 3206 of the third cup plate 32 located at the lowermost position of the core body 12 is joined to the outer periphery of the second fluid discharge hole 1812 of the bottom plate 18.

[0023] As shown in FIG. 7, the inner diameter D1 of the first burring portion 3212 of the third cup plate 32 is formed to be smaller than the inner diameter D2 of the inlet opening 34 of the first cup plate 14. As shown in Figures 7 and 8, the outer diameter D4 of the second boring portion 1404 of the first cup plate 14 and the outer diameter D5 of the third boring portion 3214 of the third cup plate 32 are formed to be larger than the inner diameter D3 of the first fluid supply path hole 3008 of the second cup plate 30. Furthermore, as shown in FIG. 4, the outer diameter D6 of the fourth boring portion 3016 of the second cup plate 30 is larger than the inner diameter D7 of the first hole 3218 for the second fluid that constitutes the second fluid intermediate discharge path 52 provided in the third cup plate 32.

[0024] According to this embodiment, the first fluid is supplied from the inlet pipe 22 to the first fluid supply passage 46 of the core body 12 via the first fluid inlet opening 34 of the first cup plate 14, flows from the first fluid supply passage 46 into each of the multiple first fluid circulation layers 42, is discharged from each of the multiple first fluid circulation layers 42 to the first fluid discharge passage 48, and reaches the outlet pipe 24 from the first fluid discharge passage 48 via the first fluid outlet opening 36 of the first cup plate 14. In this case, the inner diameter D1 of the first burring portion 3212 is formed to be smaller than the inner diameter D2 of the inlet opening 34 of the first cup plate 14. In other words, the inner diameter of the first fluid supply path 46 is smaller than the inner diameter D2 of the inlet opening 34 of the first cup plate 14. Therefore, the first fluid flows from the inlet opening 34 with a large cross-sectional area to the first fluid supply path 46 with a small cross-sectional area, and the flow rate is increased. By increasing the flow velocity of the first fluid in the first fluid supply channel 46, the first fluid flows from the first fluid supply channel 46 to each of the plurality of first fluid flow layers 42 at a substantially uniform flow rate without bias. Therefore, compared to conventional technology in which the diameters of the first fluid supply path holes and the first fluid discharge path holes provided in multiple cup plates are configured to be different, the number of types of cup plates can be reduced, which is advantageous in reducing the cost of the cup plate stacked heat exchanger 10 while increasing the heat exchange efficiency between the first fluid and the second fluid.

[0025] In addition, in this embodiment, the outer diameter D4 of the second boring portion 1404 of the first cup plate 14 and the outer diameter D5 of the third boring portion 3214 of the third cup plate 32 are formed to be larger than the inner diameter D3 of the first fluid supply path hole 3008 of the second cup plate 30. Therefore, when assembling the second cup plate 30 and the first cup plate 14, it is prevented that the first fluid supply path hole 3008 of the second cup plate 30 is mistakenly assembled to the outer peripheral surface 1404B of the second boring portion 1404 of the first cup plate 14, and also, when assembling the second cup plate 30 and the third cup plate 32, it is prevented that the first fluid supply path hole 3008 of the second cup plate 30 is mistakenly assembled to the outer peripheral surface 3214B of the third boring portion 3214 of the third cup plate 32. In addition, in this embodiment, the outer diameter D6 of the fourth boring portion 3016 of the second cup plate 30 is formed to be larger than the inner diameter D7 of the first hole 3218 for the second fluid that constitutes the second fluid intermediate discharge path 52 provided in the third cup plate 32. Therefore, when assembling the second cup plate 30 and the third cup plate 32, it is prevented that the first hole 3218 for the second fluid provided in the third cup plate 30 is mistakenly assembled to the outer peripheral surface 3016B of the fourth boring portion 3016 of the second cup plate 30. Therefore, this is advantageous in reliably preventing incorrect assembly of the first cup plate 14, the second cup plate 30, and the third cup plate 32, and is advantageous in improving the efficiency of the manufacturing process of the cup plate stacked type heat exchanger 10.

[0026] Furthermore, in this embodiment, the first fluid is cooling water and the second fluid is oil, so that the cooling water flows from the first fluid supply passage 46 to each of the multiple first fluid flow layers 42 at a substantially uniform flow rate without bias, which is advantageous in improving the heat exchange efficiency between the cooling water and oil in the cup plate stacked type heat exchanger.

[0027] In the embodiment, the flow path for the second fluid is configured to include a second fluid supply path 50, a second fluid intermediate discharge path 52, and a second fluid discharge path 54, and theoretically, everything other than the supply path is considered to be a discharge path, with both the second fluid intermediate discharge path 52 and the second fluid discharge path 54 corresponding to a discharge path. Since the second fluid intermediate discharge path 52 is provided at a location that is 180 degrees out of phase with the second fluid supply path 50 about the center of the first cup plate 14, the first second fluid holes are the second fluid intermediate discharge path holes 3014, 3218 provided in the second and third cup plates 30, 32 to form the second fluid intermediate discharge path 52. In addition, the flow path of the second fluid may be configured to include a second fluid supply path 50 and a second fluid discharge path 54, and the second fluid supply path 50 and the second fluid discharge path 54 may be provided at locations that are 180 degrees out of phase with each other around the center of the first cup plate 14. In this case, the first hole for the second fluid becomes a hole for the second fluid discharge path provided to form the second fluid discharge path 54. [Explanation of symbols]

[0028] 10. Cup-plate stacked heat exchanger 12 Core body 14 First Cup Plate 1402 Inclined plate section 1404 Second Barring Section 1404A Inner surface 1404B Outer surface 1408 2nd fluid intermediate discharge hole 1410 2nd fluid discharge hole 16 Top Plate 16A Entrance 16B Exit 1602 Inclined plate section 18 Bottom Plate 1802 Inclined plate section 1804 1st fluid supply hole 1806 1st fluid discharge hole 1806A inner circumference 1808 2nd fluid supply hole 1810 2nd fluid intermediate discharge hole 1812 2nd fluid discharge hole 20 base plate 22 Inflow pipe 24 Outflow pipe 26 Inlet 28 Outlet 30 Second Cup Plate 3002 First disc part 3004 1st inclined plate part 3006 2nd fluid discharge channel hole 3006A outer periphery 3008 First fluid supply channel hole 3008A outer periphery 3010 First fluid discharge channel hole 3010A inner circumference 3012 2nd fluid supply channel hole 3014 Hole for second fluid intermediate discharge path (first hole for second fluid) 3014A outer periphery 3016 4th Barring Section 3016A Inner peripheral surface (2nd hole for 2nd fluid) 3016B Outer surface 3016H 1st fluid supply channel hole 32 3rd Cup Plate 3202 Second disc part 3204 2nd inclined plate part 3206 2nd fluid discharge channel hole 3206A outer periphery 3208 First fluid supply channel hole 3210 First fluid discharge channel hole 3212 First Barring Section 3212A Inner surface 3212B Outer surface 3214 3rd Barring Section 3214A Inner surface 3214B Outer surface 3216 2nd fluid supply path hole (2nd hole for 2nd fluid) 3218 Hole for second fluid intermediate discharge path (first hole for second fluid) 3218A outer periphery 3220 Projection part 3222 convex part 3216H 1st fluid supply channel hole 34 Entrance 36 Exit 38 Entrance 40 exit 42 1st fluid flow layer 44 Second fluid flow layer 46 1st fluid supply path 48 1st fluid discharge path 50 Second fluid supply path 52 Second fluid intermediate discharge path (second fluid discharge path) 54 2nd fluid discharge path 56 Flow path 58 Finn D1: Inner diameter of the first burring portion 3212 D2 Inner diameter of inlet opening 34 D3: Inner diameter of the first fluid supply path hole 3208 D4: Outer diameter of the second burring portion 1404 D5: Outer diameter of the third burring portion 3214 D6 Outer diameter of the fourth boring section 3016 D7: Inner diameter of the hole for the intermediate discharge path for second fluid (first hole for second fluid) 3014 and the hole for the intermediate discharge path for second fluid (first hole for second fluid) 3218

Claims

1. a core body (12) in which a plurality of second cup plates (30) and a plurality of third cup plates (32) are alternately stacked, and first fluid circulation layers (42) and second fluid circulation layers (44) are alternately formed between the adjacent second and third cup plates (30, 32) in the stacking direction; a first cup plate (14) stacked on the second cup plate (30) located at one end of the core body (12) in the stacking direction; a top plate (16) that is placed on the first cup plate (14) and has an inlet (16A) for a first fluid and an outlet (16B) for a first fluid; The first cup plate (14) is provided with an inlet opening (34) communicating with an inlet (16A) for the first fluid and an outlet opening (36) communicating with an outlet (16B) for the first fluid; a first fluid supply path (46) extending in the stacking direction is provided in the core body (12), the first fluid supply path (46) being coaxial with the inlet opening (34) and communicating with the inlet opening (34) and the first fluid circulation layer (42); a cup plate stacking type heat exchanger in which first fluid supply path holes (3016H, 3216H) constituting the first fluid supply path (46) are provided in the second and third cup plates (30, 32), an inner diameter (D1) of the first fluid supply passage hole (3016H, 3216H) is smaller than an inner diameter (D2) of the inlet opening (34) of the first cup plate (14); A cup-plate stacked heat exchanger characterized by the above.

2. a core body (12) in which a plurality of round second cup plates (30) and a plurality of round third cup plates (32) are alternately stacked, and first fluid flow layers (42) and second fluid flow layers (44) are alternately formed between the adjacent second and third cup plates (30, 32) in the stacking direction; a round first cup plate (14) superimposed on the second cup plate (30) located at one end of the core body (12) in the stacking direction; a top plate (16) that is placed on the first cup plate (14) and has an inlet (16A) for a first fluid and an outlet (16B) for a first fluid; The first cup plate (14) is provided with an inlet opening (34) communicating with an inlet (16A) for the first fluid and an outlet opening (36) communicating with an outlet (16B) for the first fluid; a first fluid supply path (46) extending in the stacking direction is provided in the core body (12), the first fluid supply path (46) being coaxial with the inlet opening (34) and communicating with the inlet opening (34) and the first fluid circulation layer (42); The second and third cup plates (30, 32) are provided with first fluid supply path holes (3008, 3208) that constitute the first fluid supply path (46), The first fluid supply path hole (3208) provided in the third cup plate (32) is formed by an inner peripheral surface (3212A) of an annular first burring portion (3212) protruding in a direction away from the first cup plate (14), A cup plate stacked type heat exchanger in which an inner peripheral portion (3008A) of the first fluid supply path hole (3008) of the second cup plate (30) is fitted into an outer peripheral surface (3212B) of the first burring portion (3212), The inner diameter (D1) of the first burring portion (3212) is smaller than the inner diameter (D2) of the inlet opening (34) of the first cup plate (14). A cup-plate stacked heat exchanger characterized by the above.

3. The first cup plate (14) is provided with an outlet opening (36) for a first fluid; The outlet opening 36 is formed by an inner peripheral surface (1404A) of an annular second burring portion (1404) provided on the first cup plate (14) and protruding toward the core body (12), The inlet opening (34) and the outlet opening (36) are provided at positions that are 180 degrees out of phase with each other about the center of the first cup plate (14), The core body (12) is provided with a first fluid discharge passage (48) extending in the stacking direction and communicating with the outlet opening (36), The second and third cup plates (30, 32) are provided with first fluid discharge path holes (3010, 3210) for forming the first fluid discharge path (48), The first fluid discharge path hole (3210) provided in the third cup plate (32) is formed by an inner peripheral surface (3214A) of an annular third burring portion (3214) having an outer peripheral surface (3214B) having substantially the same shape as the outer peripheral surface (1404B) of the second burring portion (1404), The inner peripheral portion (3010A) of the first fluid discharge path hole (3010) of the second cup plate (30) is fitted into the outer peripheral surfaces (1404B, 3214B) of the second burring portion (1404) and the third burring portion (3214), The outer diameters (D4, D5) of the second burring portion (1404) and the third burring portion (3214) are formed larger than the inner diameter (D3) of the first fluid supply path hole (3008) of the second cup plate (30); Furthermore, the core body (12) is provided with a second fluid supply path (50) and a second fluid discharge path (52) extending in the stacking direction at positions that are 180 degrees out of phase with each other about the center of the first cup plate (14), The second and third cup plates (30, 32) are provided with first holes (3014, 3218) for second fluid, which have substantially the same inner diameter (D7) and which constitute one of the second fluid supply path (50) and the second fluid discharge path (52), and whose outer peripheries are joined to each other; a second hole for second fluid constituting the other of the second fluid supply path (50) and the second fluid discharge path (52) provided in the second cup plate (30) is formed by an inner peripheral surface (3016A) of an annular fourth burring portion (3016) protruding in a direction away from the first cup plate (14); an inner peripheral portion (3216A) of the second hole (3216) for second fluid that constitutes the other of the second fluid supply path (50) and the second fluid discharge path (52) provided in the third cup plate (32) is fitted into an outer peripheral surface (3016B) of the fourth burring portion (3016); The outer diameter (D6) of the fourth burring portion (3016) is formed larger than the inner diameter (D7) of the second fluid first hole (3218) constituting one of the second fluid supply path (50) and the second fluid discharge path (52) provided in the third cup plate (32).

3. The cup plate stacked type heat exchanger according to claim 2.

4. The first fluid is cooling water and the second fluid is oil.

4. The cup plate stacked type heat exchanger according to claim 1, wherein the cup plate stacked type heat exchanger is a cup plate stacked type heat exchanger.

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