Heat exchanger

Abstract

The heat exchanger comprises a plurality of circulation plates, the circulation plates comprise the first circulation plate and the second circulation plate, the first circulation plate and the second circulation plate are adjacently arranged, the first circulation plate comprises a plurality of first protruding parts protruding towards the second circulation plate, the first protruding parts are located in a first distribution area of the first circulation plate, and the second protruding parts are located in a second distribution area of the second circulation plate. The second circulation plate comprises a plurality of second convex parts which are arranged opposite to the first convex parts and protrude towards the first circulation plate, the second convex parts are located in the first distribution area of the second circulation plate, and the first convex parts of the first distribution area of the first circulation plate are fixedly connected with the second convex parts of the first distribution area of the second circulation plate. By means of the structure, the welding strength between every two adjacent circulation plates can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange, and particularly relates to a heat exchanger. Background Art

[0002] The heat exchanger includes a plurality of flow plates which are stacked. The flow plate includes two corner hole areas which are respectively located at both ends of the fluid plate. Each corner hole area is provided with two corner holes. There is a distribution area between the two corner holes in the same corner hole area. The distribution area is usually of a planar structure. The outer peripheries of the corner holes of adjacent flow plates are welded and fixed. A relatively large cavity is formed between the distribution areas of adjacent flow plates. In this way, the welding strength between adjacent flow plates is small. Summary of the Invention

[0003] The purpose of the present application is to provide a heat exchanger, which is beneficial to improving the welding strength between adjacent flow plates of the heat exchanger.

[0004] To achieve the above purpose, an embodiment of the present application adopts the following technical solutions:

[0005] A heat exchanger, the heat exchanger includes a plurality of flow plates which are stacked. The flow plate includes a first distribution area which is arranged near one end of the flow plate. The first distribution area has at least one.

[0006] The flow plate includes a first flow plate and a second flow plate. The first flow plate and the second flow plate are adjacent to each other. The first flow plate includes a plurality of first convex parts which are located in the first distribution area of the first flow plate. The plurality of first convex parts protrude towards the second flow plate. The second flow plate includes a plurality of second convex parts which are arranged opposite to the first convex parts. The plurality of second convex parts are located in the first distribution area of the second flow plate. The plurality of second convex parts protrude towards the first flow plate. The first convex parts in the first distribution area of the first flow plate and the second convex parts in the first distribution area of the second flow plate are fixedly connected.

[0007] In an embodiment provided by the present application, the heat exchanger includes a plurality of flow plates which are stacked. The flow plate includes a first flow plate and a second flow plate. The first flow plate includes a plurality of first convex parts which are located in the first distribution area of the first flow plate. The second flow plate includes a plurality of second convex parts which are arranged opposite to the first convex parts. The first convex parts and the second convex parts are fixedly connected. The distribution areas of two adjacent flow plates of the heat exchanger are respectively provided with relatively protruding convex parts, and the convex parts on the two adjacent flow plates are fixedly connected. This structure can increase the welding strength between two adjacent flow plates. Description of the Drawings

[0008] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0009] Figure 1 Structural schematic diagram of a heat exchanger;

[0010] Figure 2 Structural schematic diagram of a first flow plate provided by an embodiment of the present invention from one perspective;

[0011] Figure 3 Structural schematic diagram of a first flow plate provided by an embodiment of the present invention from another perspective;

[0012] Figure 4 Structural schematic diagram of a second flow plate provided by an embodiment of the present invention from one perspective;

[0013] Figure 5 Structural schematic diagram of a second flow plate provided by an embodiment of the present invention from another perspective;

[0014] Figure 6 Structural schematic diagram of a stack of multiple flow plates provided by an embodiment of the present invention from one perspective;

[0015] Figure 7 Structural schematic diagram of a stack of multiple flow plates provided by an embodiment of the present invention from another perspective;

[0016] Figure 8 Top view of a stack of multiple flow plates provided by an embodiment of the present invention;

[0017] Figure 9 For Figure 8 Cross-sectional view taken along direction A in

[0018] Figure 10 For Figure 8 Cross-sectional view taken along direction B in

[0019] Figure 11 For Figure 8 Cross-sectional view taken along direction C in

[0020] In the illustration, 1 and 2 are end plates; 101 is an inlet / outlet hole; 3 is a flow-through plate; 3a is the first flow-through plate; 3a1 is the first end of the first flow-through plate along the length direction; 3a2 is the second end of the first flow-through plate along the length direction; 301a is the first substrate; 301a1 is the first plate surface; 301a2 is the second plate surface; 302a is the first distribution area of the first flow-through plate; 303a is the second distribution area of the first flow-through plate; 304a is the first corner hole of the first flow-through plate; 305a is the second corner hole of the first flow-through plate; 306a is the third corner hole of the first flow-through plate; 307a is the fourth corner hole of the first flow-through plate; 308a is the first convex part; 309a is the third convex part; 310a is the first low-level section; 311a is the first boss; 312a is the first extension part; 313a is the flange of the first flow-through plate; 314a is the third groove; 315a is the second boss; 316a is the second extension part; 317a is the fourth groove; 318a is the first groove; 319a is the third boss; 320a is the second groove; 321a is the fourth boss; 322a is the heat exchange area of the first flow-through plate; 323a is the third low-level section; 3b is the second flow-through plate; 3b1 is the first end of the second flow-through plate along the length direction; 3b2 is the second end of the second flow-through plate along the length direction; 301b is the second substrate; 301b1 is the third plate surface; 301b2 is the fourth plate surface; 302b is the first distribution area of the second flow-through plate; 303b is the second distribution area of the second flow-through plate; 304b is the first corner hole of the second flow-through plate; 305b is the second corner hole of the second flow-through plate; 306b is the third corner hole of the second flow-through plate; 307b is the fourth corner hole of the second flow-through plate; 308b is the second convex part; 309b is the fourth concave part; 310b is the second low-level section; 311b is the fifth boss; 312b is the third extension part; 313b is the flange of the second flow-through plate; 314b is the seventh groove; 315b is the sixth boss; 316b is the fourth extension part; 317b is the eighth groove; 318b is the fifth groove; 319b is the seventh boss; 320b is the sixth groove; 321b is the eighth boss; 322b is the heat exchange area of the second flow-through plate; 323b is the fourth low-level section; S1 is the first inter-plate channel; S2 is the second inter-plate channel. Detailed implementation mode

[0021] An embodiment of the present invention discloses a heat exchanger, and the structural design of this heat exchanger is conducive to improving the welding strength between adjacent flow-through plates of the heat exchanger.

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] As Figure 1 shown, the heat exchanger includes two end plates 1, 2 and a plurality of flow-through plates 3. The plurality of flow-through plates 3 are stacked to form a stacked group. There is a first inter-plate channel S1 between a flow-through plate 3 and an adjacent flow-through plate 3. The first inter-plate channel S1 is for the first fluid to flow through. In this application, the first fluid refers to the refrigerant. There is a second inter-plate channel S2 between a flow-through plate 3 and another adjacent flow-through plate 3. The second inter-plate channel S2 is for the second fluid to flow through. In this application, the second fluid refers to the coolant. The first inter-plate channel S1 and the second inter-plate channel S2 are not connected, and the first fluid and the second fluid exchange heat; the two end plates 1, 2 are respectively located at both ends of the stacked group along the stacking direction. A total of 4 inlet / outlet holes 101 are provided on the two end plates 1, 2 to communicate with the inlets and outlets of the first fluid channels formed by communicating with the respective first inter-plate channels S1 and the inlets and outlets of the second fluid channels formed by communicating with the respective second inter-plate channels S2. The number of inlet / outlet holes 101 on the two end plates 1, 2 can be the same or different. As Figure 1 described, one of the end plates 1, 2 located at the top layer is provided with one inlet / outlet hole 101. Correspondingly, one of the end plates 1, 2 located at the bottom layer should be provided with three inlet / outlet holes 101. Of course, in other embodiments, the number of inlet / outlet holes 101 on the end plates 1, 2 can also be 0, 2, and 4.

[0024] To increase the heat exchange area and improve the heat exchange effect, the heat exchanger further includes fins (not shown in the figure). The fins are located in the first inter-plate channel S1 and the second inter-plate channel S2. The two end faces of the fins are respectively welded and fixed to the adjacent two flow-through plates 3. The fins are in a wavy shape, and at least one end of the fins is rectangular. It should be noted that other components can also be used in the heat exchanger to improve the heat exchange effect. For example, flat tubes (not shown in the figure) can be used instead of fins, or fins can be provided in one of the first inter-plate channel S1 and the second inter-plate channel S2, and flat tubes can be provided in the other of the first inter-plate channel S1 and the second inter-plate channel S2. Of course, in addition to flat tubes and fins, other components can also be used, which are not limited here.

[0025] In other embodiments, the fins / flat tubes can also be provided only in the first inter-plate channel S1 or the second inter-plate channel S2. The two end faces of the fins / flat tubes are respectively welded and fixed to the adjacent two flow-through plates 3.

[0026] In this embodiment, the flow plate 3 includes a heat exchange area 322a (322b), a first distribution area 302a (302b), and a second distribution area 303a (303b). The first distribution area 302a (302b) and the second distribution area 303a (303b) are respectively located at both ends of the flow plate 3, and the heat exchange area 322a (322b) is located between the first distribution area 302a (302b) and the second distribution area 303a (303b). The first distribution area 302a and 302b are provided with corner holes 304a, 305a, 304b, and 305b, and the second distribution area 303a and 303b are provided with corner holes 306a, 307a, 306b, and 307b. The fins / tubular fins are located in the heat exchange areas 322a and 322b. In other embodiments, part of the fins can also extend to the first distribution area 302a, 302b and / or the second distribution area 303a, 303b, and are located between the two corner holes 304a and 305a of the first distribution area 302a, or between the two corner holes 304b and 305b of the first distribution area 302b, or between the two corner holes 306a and 307a of the second distribution area 303a, or between the two corner holes 306b and 307b of the second distribution area 303b.

[0027] In this embodiment, corner holes 304a, 305a, 306a, and 307a (304b, 305b, 306b, and 307b) are respectively provided at the four corners of the flow plate 3. Two adjacent corner holes 305a and 305b (307a and 307b) of the adjacent flow plates 3 cooperate to connect each first inter-plate channel S1, and the other two corner holes 304a and 304b (306a and 306b) cooperate to connect each second inter-plate channel S2.

[0028] Please refer to Figures 2 to 5 , Figure 2 which is a schematic structural diagram of a first flow plate provided by an embodiment of the present invention from one perspective, Figure 3 which is a schematic structural diagram of the first flow plate provided by an embodiment of the present invention from another perspective, Figure 4 which is a schematic structural diagram of a second flow plate provided by an embodiment of the present invention from one perspective, Figure 5 which is a schematic structural diagram of the second flow plate provided by an embodiment of the present invention from another perspective.

[0029] An embodiment of the present application provides a heat exchanger, which includes a plurality of flow plates 3 stacked. The flow plates 3 include first distribution areas 302a and 302b, which are arranged near one end of the flow plate 3, and the first distribution areas 302a and 302b have at least one corner hole 304a, 305a, 304b, and 305b.

[0030] To form non-connected first inter-plate channels S1 and second inter-plate channels S2, the various flow-through plates 3 of the heat exchanger are divided into two types, that is, the flow-through plate 3 includes a first flow-through plate 3a and a second flow-through plate 3b. The first flow-through plate 3a and the second flow-through plate 3b are arranged adjacent to each other, as Figure 2 and Figure 3 shown. The first flow-through plate 3a includes a plurality of first convex portions 308a. The plurality of first convex portions 308a are located in the first distribution area 302a of the first flow-through plate 3a. The plurality of first convex portions 308a protrude towards the second flow-through plate 3b. Here, since the second flow-through plates 3b may be provided on both sides of the first flow-through plate 3a, a plurality of first convex portions 308a and a plurality of third convex portions 309a can be respectively provided on both sides of the first flow-through plate 3a. Or only one side of the first flow-through plate 3a is provided with a second flow-through plate 3b. In this case, a plurality of first convex portions 308a can be provided only on the side of the first flow-through plate 3a adjacent to the second flow-through plate 3b, or a plurality of first convex portions 308a and third convex portions 309a can be respectively provided on both sides of the first flow-through plate 3a.

[0031] As Figure 4 and Figure 5 shown, the second flow-through plate 3b includes a plurality of second convex portions 308b arranged opposite to the first convex portions 308a. The plurality of second convex portions 308b are located in the first distribution area 302b of the second flow-through plate 3b. The plurality of second convex portions 308b protrude towards the first flow-through plate 3a. Since the first flow-through plates 3a may be provided on both sides of the second flow-through plate 3b, a plurality of second convex portions 308b and a plurality of fourth convex portions 309b can be respectively provided on both sides of the second flow-through plate 3b. Or only one side of the second flow-through plate 3b is provided with a first flow-through plate 3a. In this case, a plurality of second convex portions 308b can be provided only on the side of the second flow-through plate 3b adjacent to the first flow-through plate 3a, or a plurality of second convex portions 308b and a plurality of fourth convex portions 309b can be respectively provided on both sides of the second flow-through plate 3b. The first convex portions 308a in the first distribution area 302a of the first flow-through plate 3a and the second convex portions 308b in the first distribution area 302b of the second flow-through plate 3b are fixedly connected. It should be noted that since the heat exchanger is formed by alternately laminating a plurality of first flow-through plates 3a and a plurality of second flow-through plates 3b, if the first distribution area 302a of the first flow-through plate 3a is provided with third convex portions 309a and the first distribution area 302b of the second flow-through plate 3b is provided with fourth convex portions 309b, then the third convex portions 309a in the first distribution area 302a of the first flow-through plate 3a and the fourth convex portions 309b in the first distribution area 302b of the second flow-through plate 3b are fixedly connected. Here, the fixed connection includes but is not limited to welding and bonding.

[0032] It can be seen that in an implementation provided by the present application, the first distribution areas 302a and 302b of two adjacent flow-through plates 3a and 3b of the heat exchanger are respectively provided with relatively protruding first convex parts 308a and second convex parts 308b, and the first convex parts 308a and the second convex parts 308b of two adjacent flow-through plates 3a and 3b are fixedly connected. It should be noted that distribution areas (302a, 302b, 303a, 303b) are respectively provided at both ends of the flow-through plates 3a and 3b in the length direction, and at least one of the distribution areas (302a, 302b, 303a, 303b) adopts the structure of the above-mentioned first distribution areas 302a and 302b. By providing the first convex parts 308a and the second convex parts 308b protruding towards each other in the first distribution areas 302a and 302b of two adjacent flow-through plates 3a and 3b, and fixedly connecting the first convex parts 308a and the second convex parts 308b on two adjacent flow-through plates 3a and 3b, this structure can not only increase the welding strength between two adjacent flow-through plates 3a and 3b, but also reduce the cavity area between the first distribution areas 302a and 302b of two adjacent flow-through plates 3a and 3b, thereby improving the overall strength of the heat exchanger, meeting the requirements of bursting and pressure alternation of the heat exchanger product, and also increasing the heat exchange area of the distribution area and improving the heat exchange efficiency here.

[0033] The above-mentioned first convex part 308a and second convex part 308b can adopt various shapes, such as frustum of a cone, trapezoid, etc. In an embodiment of the present application, the first convex part 308a is in a V shape, and each of the first convex parts 308a is connected to form a herringbone wave shape, the second convex part 308b is in a V shape, and each of the second convex parts 308b is connected to form a herringbone wave shape. The above-mentioned first convex part 308a and second convex part 308b can adopt a hollow structure or a solid structure.

[0034] As Figures 2 to 5 shown, in an embodiment of the present application, the flow-through plates 3a and 3b include second distribution areas 303a and 303b, and the second distribution areas 303a and 303b are arranged near the other ends of the flow-through plates 3a and 3b. The second distribution areas 303a and 303b are respectively provided with corner holes (306a, 307a, 306b, 307b), as Figure 2 and Figure 3As shown, a plurality of first protrusions 308a are provided in the second distribution area 303a of the first flow plate 3a, and a plurality of second protrusions 308b are provided in the second distribution area 303b of the second flow plate 3b. The first protrusions 308a in the second distribution area 303a of the first flow plate 3a and the second protrusions 308b in the second distribution area 303b of the second flow plate 3b are fixedly connected. It should be noted that the number and arrangement of the plurality of first protrusions 308a in the second distribution area 303a of the first flow plate 3a may be the same as or different from the number and arrangement of the plurality of first protrusions 308a in the first distribution area 302a of the first flow plate 3a. The number and arrangement of the plurality of second protrusions 308b in the second distribution area 303b of the second flow plate 3b may be the same as or different from the number and arrangement of the plurality of second protrusions 308b in the first distribution area 302b of the second flow plate 3b.

[0035] As Figures 6 to 9 shown, in practical applications, the first flow plate 3a and the second flow plate 3b are alternately stacked. The first flow plate 3a includes a first substrate 301a. The first substrate 301a includes a first plate surface 301a1 and a second plate surface 301a2 disposed opposite to the first plate surface 301a1. A plurality of first protrusions 308a protrude from the first plate surface 301a1, and a plurality of third protrusions 309a are provided on the second plate surface 301a2. Each of the third protrusions 309a protrudes from the second plate surface 301a2.

[0036] The second flow plate 3b includes a second substrate 301b. The second substrate 301b includes a third plate surface 301b1 and a fourth plate surface 301b2 disposed opposite to the third plate surface 301b1. A plurality of second protrusions 308b protrude from the third plate surface 301b1, and a plurality of fourth protrusions 309b are provided on the fourth plate surface 301b2. Each of the fourth protrusions 309b protrudes from the fourth plate surface 301b2. The third protrusions 309a in the first distribution area 302a of the first flow plate 3a and the fourth protrusions 309b in the first distribution area 302b of the second flow plate 3b are fixedly connected. The third protrusions 309a in the second distribution area 303a of the first flow plate 3a and the fourth protrusions 309b in the second distribution area 303b of the second flow plate 3b are fixedly connected.

[0037] In an embodiment of the present application, the first substrate 301a and the second substrate 301b are flat or approximately flat plates. The shape of the third protrusion 309a conforms to the shape of the first protrusion 308a, and the shape of the second protrusion 308b conforms to the shape of the fourth protrusion 309b. That is, in an embodiment of the present application, the first protrusion 308a and the third protrusion 309a are formed by stamping on the basis of the first substrate 301a, and the second protrusion 308b and the fourth protrusion 309b are formed by stamping on the basis of the second substrate 301b.

[0038] For the convenience of forming the first convex portion 308a and the third convex portion 309a, and the second convex portion 308b and the fourth convex portion 309b, in an embodiment of the present application, the cross-section of the first flow plate 3a parallel to the first plate surface 301a1 and the second plate surface 301a2 is the first projection surface. The projections of the first convex portion 308a and the third convex portion 309a on the first projection surface do not overlap. The cross-section of the second flow plate 3b parallel to the third plate surface 301b1 and the fourth plate surface 301b2 is the second projection surface. The projections of the second convex portion 308b and the fourth convex portion 309b on the second projection surface do not overlap. That is, the first convex portion 308a and the third convex portion 309a are arranged in a staggered manner, and the second convex portion 308b and the fourth convex portion 309b are arranged in a staggered manner. In this way, the first convex portion 308a and the third convex portion 309a, and the second convex portion 308b and the fourth convex portion 309b can be formed by one stamping, which is convenient for manufacturing.

[0039] As Figures 2 to 6 shown, first corner holes 304a, 304b and second corner holes 305a, 305b are respectively arranged at two corners of the first ends 3a1, 3b1 of the flow plate 3 along the length direction, and third corner holes 306a, 306b and fourth corner holes 307a, 307b are respectively arranged at two corners of the second ends 3a2, 3b2 of the flow plate 3 along the length direction. In an embodiment of the present application, the first corner holes 304a, 304b and the third corner holes 306a, 306b are arranged diagonally and serve as the inlets and outlets of the first inter-plate channel S1. The second corner holes 305a, 305b and the fourth corner holes 307a, 307b are arranged diagonally and serve as the inlets and outlets of the second inter-plate channel S2. In this way, the same fluid can flow diagonally, which can increase the flow path and improve the heat exchange effect. Of course, in other embodiments, the diagonal arrangement scheme may not be adopted. For example, the two corner holes on the flow plate 3 communicating with the same inter-plate channel can be arranged at the same end of the flow plate 3 or on the same side in the length direction of the flow plate 3.

[0040] As Figures 2 to 6As shown, the first convex portions 308a and the third convex portions 309a of the first distribution area 302a of the first flow plate 3a are located between the first corner hole 304a and the second corner hole 305a of the first flow plate 3a. The first convex portions 308a and the third convex portions 309a of the second distribution area 303a of the first flow plate 3a are located between the third corner hole 306a and the fourth corner hole 307a of the first flow plate 3a. The second convex portions 308b and the fourth convex portions 309b of the first distribution area 302b of the second flow plate 3b are located between the first corner hole 304b and the second corner hole 305b of the second flow plate 3b. The second convex portions 308b and the fourth convex portions 309b of the second distribution area 303b of the second flow plate 3b are located between the third corner hole 306b and the fourth corner hole 307b of the second flow plate 3b. Of course, it should be noted that setting convex portions between two corner holes at the same end of the flow plate 3 is a preferred embodiment provided by the present application. In other embodiments, convex portions can also be provided at other positions of the flow plate 3 as needed. Moreover, the planar area occupied by the convex portions between two corner holes at the same end of the flow plate 3 can be designed according to parameters such as the size of the fins, flat tubes, and corner holes, as well as the fluid pressure, and is not limited herein.

[0041] As Figure 2 shown, in an embodiment of the present application, a direction parallel to the flow plate 3 is defined as the E direction, and a direction parallel to the flow plate 3 and arranged at an angle to the E direction is defined as the F direction. The angle between the E direction and the F direction can be 90°, or can be less than 90°. Each of the first convex portions 308a is arranged in an array along the E direction and the F direction. Each of the second convex portions 308b is arranged in an array along the E direction and the F direction. Each of the third convex portions 309a is arranged in an array along the E direction and the F direction. Each of the fourth convex portions 309b is arranged in an array along the E direction and the F direction. That is, within the same distribution area, a plurality of the first convex portions 308a are arranged in a straight line along the E direction and can have multiple rows along the E direction. At the same time, a plurality of the first convex portions 308a also form a straight-line arrangement along the F direction and can have multiple rows along the F direction. The arrangement manners of the second convex portions 308b, the third convex portions 309a, and the fourth convex portions 309b are similar thereto and will not be elaborated herein.

[0042] As Figures 2 to 5 shown, there is a first low-level segment 310a between adjacent first convex portions 308a. The first flow plate 3a includes a first substrate 301a. The height of the first low-level segment 310a from the first substrate 301a is less than the height of the first convex portion 308a from the first substrate 301a; and / or, there is a second low-level segment 310b between adjacent second convex portions 308b. The second flow plate 3b includes a second substrate 301b. The height of the second low-level segment 310b from the second substrate 301b is less than the height of the second convex portion 308b from the second substrate 301b.

[0043] Similarly, as Figures 2 to 5 shown, there is a third low section 323a between adjacent third convex portions 309a. The first flow plate 3a includes a first substrate 301a. The height of the third low section 323a from the first substrate 301a is less than the height of the third convex portion 309a from the first substrate 301a, and / or there is a fourth low section 323b between adjacent fourth convex portions 309b. The second flow plate 3b includes a second substrate 301b. The height of the fourth low section 323b from the second substrate 301b is less than the height of the fourth convex portion 309b from the second substrate 301b.

[0044] By providing a low section between adjacent convex portions, the convex portions can be arranged more densely, which is beneficial to improving the heat exchange effect. And in the distribution areas of two adjacent flow plates 3, a gradually widening and narrowing space flow channel is formed through the cooperation of convex portions, low sections and concave portions, which can further strengthen the heat exchange between the refrigerant and the coolant. Of course, it should be noted that the design of the low section is a preferred implementation provided in an embodiment of the present application. In other embodiments, the low section may not be provided.

[0045] It should be noted that the two sides of the flow plate 3 are respectively the first inter-plate channel side S1 and the second inter-plate channel side S2. Since the first inter-plate channel S1 is used for the flow of the refrigerant, the pressure in the first inter-plate channel S1 is relatively high. The number of the first convex portions 308a of the first flow plate 3a located on the first inter-plate channel S1 is greater than the number of the third convex portions 309a of the first flow plate 3a located on the second inter-plate channel S2. From Figure 2 and Figure 3 it can be seen that the number of the first convex portions 308a protruding from the first plate surface 301a1 of the first flow plate 3a is 8, and the number of the third convex portions 309a protruding from the second plate surface 301a2 is 7. Of course, in practical applications, the number of the first convex portions 308a and the third convex portions 309a on both sides of the first flow plate 3a may also be the same, or the difference in the number of the first convex portions 308a and the third convex portions 309a on both sides of the first flow plate 3a may also be larger, or the number of the first convex portions 308a of the first flow plate 3a located on the first inter-plate channel S1 may be less than the number of the third convex portions 309a of the first flow plate 3a located on the second inter-plate channel S2. Similarly to the above first flow plate 3a, the number of the second convex portions 308b of the second flow plate 3b located on the first inter-plate channel S1 is greater than the number of the fourth convex portions 309b of the second flow plate 3b located on the second inter-plate channel S2, that is, as Figure 4 and Figure 5As shown, the number of second convex portions 308b protruding from the third plate surface 301b1 of the second flow-through plate 3b is 7, and the number of fourth convex portions 309b protruding from the fourth plate surface 301b2 is 8. In the illustrated embodiment, the first plate surface 301a1 of the first flow-through plate 3a and the fourth plate surface 301b2 of the adjacent second flow-through plate 3b enclose a first inter-plate channel S1, and the second plate surface 301a2 of the first flow-through plate 3a and the third plate surface 301a1 of the adjacent other second flow-through plate 3b enclose a second inter-plate channel S2.

[0046] As Figures 2 to 5 shown, in an embodiment of the present application, the flow-through plate 3 includes base plates 301a, 301b and flanges 313a, 313b. The flanges 313a, 313b protrude along the circumferences of the base plates 301a, 301b. First corner holes 304a, 304b and second corner holes 305a, 305b are respectively provided at two corners of the first ends 3a1, 3b1 in the length direction of the flow-through plate 3, and third corner holes 306a, 306b and fourth corner holes 307a, 307b are respectively provided at two corners of the second ends 3a2, 3b2 in the length direction of the flow-through plate 3. At least one of the outer circumferences of the first corner hole 304a and the second corner hole 305a of the first flow-through plate 3a is provided with a first boss 311a. One end of the first boss 311a is connected to the flange 313a in the length direction of the flow-through plate 3. From Figure 2 which it can be seen that a first boss 311a is provided around the first corner hole 304a of the first flow-through plate 3a. The first boss 311a is provided with a first extension portion 312a. The first boss 311a and the first extension portion 312a form a σ shape. One end of the first extension portion 312a away from the first boss 311a is connected to the flange 313a in the length direction of the first flow-through plate 3a. At least one of the outer circumferences of the third corner hole 306a and the fourth corner hole 307a of the first flow-through plate 3a is provided with a second boss 315a. One end of the second boss 315a is connected to the flange 313a in the length direction of the flow-through plate 3. As Figure 2As shown, a second boss 315a is provided around the third corner hole 306a. The second boss 315a is provided with a second extension 316a. The second boss 315a and the second extension 316a form a sigma shape. One end of the second extension 316a away from the second boss 315a is connected to the flange 313a in the length direction of the first flow plate 3a. It should be noted that the shapes formed by the first boss 311a and the first extension 312a and the shapes formed by the second boss 315a and the second extension 316a are not limited to the above sigma shape, and other shapes can also be used, as long as the first boss 311a and the second boss 315a can be connected to the corresponding side flanges 313a. The above first boss 311a and second boss 315a are usually used as the refrigerant inlets and outlets. Connecting the first boss 311a and the second boss 315a to the flanges 313a in the length direction of the flow plate 3 can reduce fluid bypass and reduce the fluid flowing into the space between the corner hole and the flange.

[0047] In the embodiment of the present application, there is a first inter-plate channel S1 between the first flow plate 3a and an adjacent second flow plate 3b, and a second inter-plate channel S2 between the first flow plate 3a and another adjacent second flow plate 3b. The first inter-plate channel S1 and the second inter-plate channel S2 are not connected. The flow plate 3 includes heat exchange areas 322a, 322b. The heat exchange areas 322a, 322b are located between the first distribution areas 302a, 302b and the second distribution areas 303a, 303b. Heat exchange components such as fins and flat tubes can be provided in the heat exchange areas 322a, 322b, or convex portions can also be provided in the heat exchange areas 322a, 322b to increase the heat exchange between the first inter-plate channel S1 and the second inter-plate channel S2 by using the convex portions.

[0048] Such as Figure 9As shown, the height H of the first inter-plate channel S1, the height h of the second inter-plate channel S2, the height h1 of the first convex portion 308a extending into the first inter-plate channel S1 is equal to 1 / 2H, the height h2 of the third convex portion 309a extending into the second inter-plate channel S2 is equal to 1 / 2h, the height h3 of the second convex portion 308b extending into the first inter-plate channel S1 is equal to 1 / 2H, and the height h4 of the fourth convex portion 309b extending into the second inter-plate channel S2 is equal to 1 / 2h. That is, the heights of the mating first convex portion 308a and the second convex portion 308b are equal to half of the height of the inter-plate channel where they are located, and the heights of the mating third convex portion 309a and the fourth convex portion 309b are equal to half of the height of the plate channel where they are located. In an embodiment of the present application, since the first inter-plate channel S1 is used for the circulation of refrigerant and the second inter-plate channel S2 is used for the circulation of coolant, the requirements for heat transfer coefficient and pressure drop of the first inter-plate channel S1 and the second inter-plate channel S2 are different. Usually, the pressure in the first inter-plate channel S1 is greater than the pressure in the second inter-plate channel S2. The height H of the above-mentioned first inter-plate channel S1 is usually less than the height h of the second inter-plate channel S2. Therefore, the heights of the first convex portion 308a and the third convex portion 309a of the first flow plate 3a are different, and the heights of the second convex portion 308b and the fourth convex portion 309b of the second flow plate 3b are different. By making the heights of the first convex portion 308a and the third convex portion 309a different, and the heights of the second convex portion 308b and the fourth convex portion 309b different, it is convenient for the stamping of the first flow plate 3a and the second flow plate 3, and the thinning rate during the stamping process can also be reduced.

[0049] Of course, in other embodiments, the height H of the first inter-plate channel S1 may also be equal to the height h of the second inter-plate channel S2. In this case, the heights of the first convex portion 308a and the third convex portion 309a of the first flow plate 3a are the same, and the heights of the second convex portion 308b and the fourth convex portion 309b of the second flow plate 3b are the same. That is, the heights of the first convex portion 308a and the mating second convex portion 308b are half of the height of the inter-plate channel where they are located, and the heights of the third convex portion 309a and the mating fourth convex portion 309b are half of the height of the inter-plate channel where they are located. Of course, in this case, the heights of the first convex portion 308a and the third convex portion 309a of the first flow plate 3a may also be different, and the heights of the second convex portion 308b and the fourth convex portion 309b of the second flow plate 3b may also be different, as long as it can be ensured that the relative first convex portion 308a and the second convex portion 308b, and the third convex portion 309a and the fourth convex portion 309b can be fixed and welded.

[0050] Further, in an embodiment of the present application, the first flow plate 3a includes a first substrate 301a. The height by which at least one first convex portion 308a protrudes from the first substrate 301a is different from the height by which other first convex portions 308a protrude from the first substrate 301a. The height by which at least one third convex portion 309a protrudes from the first substrate 301a is different from the height by which other third convex portions 309a protrude from the first substrate 301a. And / or, the second flow plate 3b includes a second substrate 301b. The height by which at least one second convex portion 308b protrudes from the second substrate 301b is different from the height by which other second convex portions 308b protrude from the second substrate 301b. The height by which at least one fourth convex portion 309b protrudes from the second substrate 301b is different from the height by which other fourth convex portions 309b protrude from the second substrate 301b. That is, the height by which at least one first convex portion 308a protrudes from the first flow plate 3a can be made different from the height by which other first convex portions 308a protrude from the first flow plate 3a. For example, one or several first convex portions 308a with a higher height can be provided on the first flow plate 3a to connect with the second convex portions 308b of the adjacent second flow plate 3b. The height of the other first convex portions 308a of the first flow plate 3a can be set relatively lower, so as to reduce the thinning rate of the first flow plate 3a during the stamping process. Similarly, the height by which at least one second convex portion 308b protrudes from the second flow plate 3b can be made different from the height by which other second convex portions 308b protrude from the second flow plate 3b. For example, one or several second convex portions 308b with a higher height can be provided on the second flow plate 3b to connect with the first convex portions 308a of the adjacent first flow plate 3a. The height of the other second convex portions 308b of the second flow plate 3b can be set relatively lower, so as to reduce the thinning rate of the second flow plate 3b during the stamping process. The situations of the third convex portion 309a and the fourth convex portion 309b are similar to those of the first convex portion 308a and the second convex portion 309b described above, and will not be elaborated here.

[0051] Such as Figures 6 to 11As shown, a first boss 311a is provided around a first corner hole 304a of the first flow plate 3a. The first boss 311a protrudes from the first plate surface 301a1. The first boss 311a has a first extension 312a. A first groove 318a is provided at a position corresponding to the first boss 311a and the first extension 312a on the second plate surface 301a2. A third boss 319a protruding from the second plate surface 301a2 is provided around a second corner hole 305a located at the same end of the first flow plate 3a as the first corner hole 304a. A third groove 314a is provided at a position corresponding to the third boss 319a on the first plate surface 301a1. A second boss 315a is provided around a third corner hole 306a of the first flow plate 3a. The second boss 315a has a second extension 316a. The second boss 315a protrudes from the first plate surface 301a1. A second groove 320a is provided at a position corresponding to the second boss 315a and the second extension 316a on the second plate surface 301a2. A fourth boss 321a protruding from the second plate surface 301a2 is provided around a fourth corner hole 307a located at the same end of the first flow plate 3a as the third corner hole 306a. A fourth groove 317a is provided at a position corresponding to the fourth boss 321a on the first plate surface 301a1.

[0052] Correspondingly, a fifth boss 311b is provided around a first corner hole 304b of the second flow plate 3b. The fifth boss 311b protrudes from the fourth plate surface 301b2. The fifth boss 311b has a third extension 312b. A fifth groove 318b is provided at a position corresponding to the fifth boss 311b and the third extension 312b on the third plate surface 301b1. A seventh boss 319b protruding from the third plate surface 301b1 is provided around a second corner hole 305b located at the same end of the second flow plate 3b as the first corner hole 304b. A seventh groove 314b is provided at a position corresponding to the seventh boss 319b on the fourth plate surface 301b2. A sixth boss 315b is provided around a third corner hole 306b of the second flow plate 3b. The sixth boss 315b protrudes from the fourth plate surface 301b2. The sixth boss 315b has a fourth extension 316b. A sixth groove 320b is provided at a position corresponding to the sixth boss 315b and the fourth extension 316b on the third plate surface 301b1. An eighth boss 321b protruding from the third plate surface 301b1 is provided around a fourth corner hole 307b located at the same end of the second flow plate 3b as the third corner hole 306b. A eighth groove 317b is provided at a position corresponding to the eighth boss 321b on the fourth plate surface 301b2. That is, the above-mentioned bosses are also formed by stamping, so as to reduce the thickness change of the first flow plate 3a and the second flow plate 3b.

[0053] Such as Figure 6 、 Figure 10 And Figure 11As shown, the first boss 311a of the first flow plate 3a is fixedly connected to the fifth boss 311b of the second flow plate 3b on one side, the third boss 319a of the first flow plate 3a is fixedly connected to the seventh boss 319b of the second flow plate 3b on one side, the second boss 315a of the first flow plate 3a is fixedly connected to the sixth boss 315b of the second flow plate 3b on the other side, and the fourth boss 321a of the first flow plate 3a is fixedly connected to the eighth boss 321b of the second flow plate 3b on the other side. In this way, the first inter-plate channel S1 and the second inter-plate channel S2 are isolated, and at the same time, the connection strength between the first flow plate 3a and the second flow plate 3b is increased.

[0054] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0055] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat exchanger, characterized in that, the heat exchanger includes a plurality of flow plates (3), the plurality of flow plates (3) are stacked, the flow plate (3) includes a first distribution area (302a, 302b), and the first distribution area (302a, 302b) is arranged near one end of the flow plate (3), and the first distribution area (302a, 302b) has at least one corner hole (304a, 305a, 304b, 305b). The flow plate (3) includes a first flow plate (3a) and a second flow plate (3b), the first flow plate (3a) and the second flow plate (3b) are arranged adjacent to each other, the first flow plate (3a) includes a plurality of first convex portions (308a), the plurality of first convex portions (308a) are located in the first distribution area (302a) of the first flow plate (3a), the plurality of first convex portions (308a) protrude towards the second flow plate (3b), the second flow plate (3b) includes a plurality of second convex portions (308b) arranged opposite to the first convex portions (308a), the plurality of second convex portions (308b) are located in the first distribution area (302b) of the second flow plate (3b), the plurality of second convex portions (308b) protrude towards the first flow plate (3a), and the first convex portions (308a) in the first distribution area (302a) of the first flow plate (3a) and the second convex portions (308b) in the first distribution area (302b) of the second flow plate (3b) are fixedly connected.

2. The heat exchanger according to claim 1, characterized in that, the flow plate (3) includes a second distribution area (303a, 303b), the second distribution area (303a, 303b) is arranged near the other end of the flow plate (3), the second distribution area (303a, 303b) has at least one corner hole (306a, 307a, 306b, 307b), a plurality of the first convex portions (308a) are arranged in the second distribution area (303a) of the first flow plate (3a), a plurality of the second convex portions (308b) are arranged in the second distribution area (303b) of the second flow plate (3b), and the first convex portions (308a) in the second distribution area (303a) of the first flow plate (3a) and the second convex portions (308b) in the second distribution area (303b) of the second flow plate (3b) are fixedly connected.

3. The heat exchanger according to claim 2, characterized in that, the first flow plate (3a) and the second flow plate (3b) are alternately stacked. The first flow plate (3a) includes a first substrate (301a), the first substrate (301a) includes a first plate surface (301a1) and a second plate surface (301a2) disposed opposite to the first plate surface (301a1), a plurality of the first convex portions (308a) protrude from the first plate surface (301a1), and a plurality of third convex portions (309a) are provided on the second plate surface (301a2), and each of the third convex portions (309a) protrudes from the second plate surface (301a2). The second flow plate (3b) includes a second substrate (301b), the second substrate (301b) includes a third plate surface (301b1) and a fourth plate surface (301b2) disposed opposite to the third plate surface (301b1), a plurality of the second convex portions (308b) protrude from the third plate surface (301b1), a plurality of fourth convex portions (309b) are provided on the fourth plate surface (301b2), and each of the fourth convex portions (309b) protrudes from the fourth plate surface (301b2). The third convex portions (309a) in the first distribution area (302a) of the first flow plate (3a) and the fourth convex portions (309b) in the first distribution area (302b) of the second flow plate (3b) are fixedly connected, and the third convex portions (309a) in the second distribution area (303a) of the first flow plate (3a) and the fourth convex portions (309b) in the second distribution area (303b) of the second flow plate (3b) are fixedly connected.

4. The heat exchanger according to claim 3, characterized in that a cross-section of the first flow plate (3a) parallel to the first plate surface (301a1) and the second plate surface (301a2) is a first projection plane, and projections of the first convex portions (308a) and the third convex portions (309a) on the first projection plane do not overlap; a cross-section of the second flow plate (3b) parallel to the third plate surface (301b1) and the fourth plate surface (301b2) is a second projection plane, and projections of the second convex portions (308b) and the fourth convex portions (309b) on the second projection plane do not overlap.

5. The heat exchanger according to claim 3 or 4, characterized in that the flow plate has four corner holes, and a first corner hole (304a, 304b) and a second corner hole (305a, 305b) are respectively provided at two corners of a first end (3a1, 3b1) of the flow plate (3) in the length direction, and a third corner hole (306a, 306b) and a fourth corner hole (307a, 307b) are respectively provided at two corners of a second end (3a2, 3b2) of the flow plate in the length direction. The first convex portion (308a) and the third convex portion (309a) of the first distribution area (302a) of the first flow plate (3a) are located between the first corner hole (304a) and the second corner hole (305a) of the first flow plate (3a). The first convex portion (308a) and the third convex portion (309a) of the second distribution area (303a) of the first flow plate (3a) are located between the third corner hole (306a) and the fourth corner hole (307a) of the first flow plate (3a). The second convex portion (308b) and the fourth convex portion (309b) of the first distribution area (302b) of the second flow plate (3b) are located between the first corner hole (304b) and the second corner hole (305b) of the second flow plate (3b). The second convex portion (308b) and the fourth convex portion (309b) of the second distribution area (303b) of the second flow plate (3b) are located between the third corner hole (306b) and the fourth corner hole (307b) of the second flow plate (3b).

6. The heat exchanger according to claim 5, wherein, The direction parallel to the flow plate (3) is the E direction, and the direction parallel to the flow plate (3) and at an angle to the E direction is the F direction. Each of the first convex portions (308a) is arranged in an array along the E direction and the F direction. Each of the third convex portions (309a) is arranged in an array along the E direction and the F direction. Each of the second convex portions (308b) is arranged in an array along the E direction and the F direction. Each of the fourth convex portions (309b) is arranged in an array along the E direction and the F direction.

7. The heat exchanger according to claim 3 or 6, wherein, There is a first low-level section (310a) between adjacent first convex portions (308a). The first flow plate (3a) includes a first substrate (301a). The height of the first low-level section (310a) from the first substrate (301a) is less than the height of the first convex portion (308a) from the first substrate (301a); and / or, There is a second low-level section (310b) between adjacent second convex portions (308b). The second flow plate (3b) includes a second substrate (301b). The height of the second low-level section (310b) from the second substrate (301b) is less than the height of the second convex portion (308b) from the second substrate (301b).

8. The heat exchanger according to claim 7, wherein, There is a third low-level section (323a) between adjacent third convex portions (309a). The first flow plate (3a) includes a first substrate (301a). The height of the third low-level section (323a) from the first substrate (301a) is less than the height of the third convex portion (309a) from the first substrate (301a); and / or, There is a fourth low section (323b) between adjacent said fourth convex parts (309b). The second flow-through plate (3b) includes a second base plate (301b). The height of the fourth low section (323b) from the second base plate (301b) is less than the height of the fourth convex part (309b) from the second base plate (301b).

9. The heat exchanger according to claim 3 or 8, wherein, On both sides of the flow-through plate (3) are respectively a first inter-plate channel (S1) and a second inter-plate channel (S2). The number of the first convex parts (308a) of the first flow-through plate (3a) located in the first inter-plate channel (S1) is greater than the number of the third convex parts (309a) of the first flow-through plate (3a) located in the second inter-plate channel (S2). The number of the second convex parts (308b) of the second flow-through plate (3b) located in the first inter-plate channel (S1) is greater than the number of the fourth convex parts (309b) of the second flow-through plate (3b) located in the second inter-plate channel (S2).

10. The heat exchanger according to claim 9, wherein, The flow-through plate (3) includes base plates (301a, 301b) and flanges (313a, 313b). The flanges (313a, 313b) are provided to protrude along the circumferential direction of the base plates (301a, 301b). At two corners of the first end (3a1, 3b1) of the flow-through plate (3) in the length direction are respectively provided a first corner hole (304a, 304b) and a second corner hole (305a, 305b). At two corners of the second end (3a2, 3b2) of the flow-through plate (3) in the length direction are respectively provided a third corner hole (306a, 306b) and a fourth corner hole (307a, 307b). At least one of the outer circumferences of the first corner hole (304a, 304b) and the second corner hole (305a, 305b) is provided with a first boss (311a, 311b). One end of the first boss (311a, 311b) is connected to the flange (313a, 313b) of the flow-through plate (3) in the length direction. At least one of the outer circumferences of the third corner hole (306a, 306b) and the fourth corner hole (307a, 307b) is provided with a second boss (315a, 315b). One end of the second boss (315a, 315b) is connected to the flange (313a, 313b) of the flow-through plate (3) in the length direction.

11. The heat exchanger according to claim 9, wherein, The height of the first inter-plate channel (S1) is H, the height of the second inter-plate channel (S2) is h, the height h1 of the first convex portion (308a) extending into the first inter-plate channel (S1) is equal to 1 / 2H, the height h2 of the third convex portion (309a) extending into the second inter-plate channel (S2) is equal to 1 / 2h, the height h3 of the fourth convex portion (309b) extending into the first inter-plate channel (S1) is equal to 1 / 2H, and the height h4 of the second convex portion (308b) extending into the second inter-plate channel (S2) is equal to 1 / 2h.

12. The flow-through plate according to claim 11, wherein, the first flow-through plate (3a) includes a first substrate (301a), the height by which at least one of the first convex portions (308a) protrudes from the first substrate (301a) is different from the height by which the other first convex portions (308a) protrude from the first substrate (301a), and the height by which at least one of the third convex portions (309a) protrudes from the first substrate (301a) is different from the height by which the other third convex portions (309a) protrude from the first substrate (301a); and / or, the second flow-through plate (3b) includes a second substrate (301b), the height by which at least one of the second convex portions (308b) protrudes from the second substrate (301b) is different from the height by which the other second convex portions (308b) protrude from the second substrate (301b), and the height by which at least one of the fourth convex portions (309b) protrudes from the second substrate (301b) is different from the height by which the other fourth convex portions (309b) protrude from the second substrate (301b).

13. The heat exchanger according to claim 1 or 12, wherein, a first inter-plate channel (S1) is provided between the first flow-through plate (3a) and an adjacent second flow-through plate (3b), a second inter-plate channel (S2) is provided between the first flow-through plate (3a) and another adjacent second flow-through plate (3b), the first inter-plate channel (S1) and the second inter-plate channel (S2) are not connected, and the flow-through plate (3) includes heat exchange areas (322a, 322b), and the heat exchange areas (322a, 322b) are located between the first distribution areas (302a, 302b) and the second distribution areas (303a, 303b).

14. The heat exchanger according to claim 13, wherein, the heat exchanger further includes a heat exchange member, the heat exchange member is disposed in the heat exchange areas (322a, 322b), and the heat exchange member includes one of fins and flat tubes.

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