Heat exchanger

Abstract

The heat exchanger comprises a core body, the core body comprises a first plate sheet and a second plate sheet which are arranged in a stacked mode, the core body is provided with a first fluid channel and a second fluid channel which are isolated from each other, and the first fluid channel comprises a first hole channel and a second hole channel and further comprises a first inter-plate channel; the first plate sheet and / or the second plate sheet comprises a first isolation part for dividing the first inter-plate channel into a first inter-plate sub-channel and a second inter-plate sub-channel, the core body further comprises a first area and a second area, the first area is located between the first isolation part and the second area, the width of the first area is equal to that of the second area, and the second area is located between the first sub-plate sub-channel and the second sub-plate sub-channel. The core body comprises a first blocking part and a second blocking part, the first blocking part is located in the first area, and the second blocking part is located in the second area; each first blocking part is provided with a first root part, each second blocking part is provided with a second root part, in the length direction of the first plate sheet, the maximum distance between every two adjacent first root parts is L1, and the minimum distance between every two adjacent second root parts is L2 and L2gt; l1.

Description

[Technical field]

[0001] The present application relates to the field of heat exchange technology, and in particular to a heat exchanger. [Background technology]

[0002] Plate heat exchangers have high heat exchange efficiency, are compact, and are relatively light in weight. They can be used in many industries such as refrigeration, chemical industry, and water treatment. The basic principle of a plate heat exchanger is to form multiple adjacent and spaced flow channels between multiple heat exchange plates, and the two heat exchange media exchange heat through the heat exchange plates in adjacent flow channels. With the increase in the application scenarios of plate heat exchangers, the performance requirements for plate heat exchangers are also increasing. In a heat exchanger with a U-shaped inter-plate channel, although the inter-plate channel is long, the fluid tends to flow close to the dividing ribs when flowing, and the uniformity of fluid distribution needs to be further improved. [Summary of the invention]

[0003] A heat exchanger is provided, comprising a core, the core comprising a first plate and a second plate arranged in a stacked manner, the core having a first fluid channel and a second fluid channel isolated from each other, the first fluid channel comprising a first hole and a second hole located on the same width direction side of the core, the first fluid channel also comprising a first inter-plate channel located between the first plate and the second plate and corresponding to the first hole and the second hole, the first plate and / or the second plate comprising a first isolating portion for dividing the first inter-plate channel into a first sub-inter-plate channel and a second sub-inter-plate channel, the first sub-inter-plate channel being connected to the first hole, and the second sub-inter-plate channel being connected to the second hole; the core further comprising a first region and a second region, in the length direction of the core, the first The area is located between the first isolation part and the second area, the width of the first area is equal to the width of the second area, the first plate includes a first main body, the width of the first area is half of the distance between the first isolation part and a short side of the first main body; the core includes a first blocking part and a second blocking part, the number of the first blocking parts is multiple, the first blocking parts are located in the first area, the number of the second blocking parts is multiple, and the second blocking parts are located in the second area; the first blocking part has a first root, the second blocking part has a second root, in the length direction of the first plate, the maximum distance between two adjacent first roots is L1, the minimum distance between two adjacent second roots is L2, L2>L1.

[0004] In such a heat exchanger, the core also includes a first area and a second area. In the length direction of the core, the first area is located between the first isolation part and the second area, and the width of the first area is equal to the width of the second area. The first plate includes a first main body, and the width of the first area is half of the distance between the first isolation part and a short side of the first main body. The first blocking part is located in the first area, and the second blocking part is located in the second area. The first blocking part has a first root, and the second blocking part has a second root. In the length direction of the first plate, the maximum distance between two adjacent first roots is L1, and the minimum distance between two adjacent second roots is L2, L2>L1. When the heat exchanger is working, the flow resistance of the fluid when flowing through the first area is greater than the flow resistance of the fluid when flowing through the second area, so the flow resistance of the fluid flow path close to the first isolation part is increased, so that part of the fluid tends to flow away from the first isolation part, thereby improving the uniformity of the fluid distribution in the first plate channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 is a structural schematic diagram of a first plate of an embodiment of a heat exchanger in the present application;

[0006] Figure 2 is another structural schematic diagram of the first plate of one embodiment of the heat exchanger in the present application;

[0007] Figure 3 is a schematic structural diagram of a first plate of another embodiment of a heat exchanger in the present application;

[0008] Figure 4 is a structural schematic diagram of a first plate of another embodiment of a heat exchanger in the present application;

[0009] Figure 5 is a structural schematic diagram of a first plate of yet another embodiment of a heat exchanger in the present application;

[0010] Figure 6 It is a schematic structural diagram of the first plate of another embodiment of the heat exchanger in the present application.

[0011] Reference numerals:

[0012] The first plate 11, the first main body 111, the first channel 12, the second channel 13, the first sub-plate channel 14, the second sub-plate channel 15, the first isolation portion 16, the first rib 161, the third rib 162, the first area 17, the second area 18, the first blocking portion 19, the first root 191, the second blocking portion 20, and the second root 201. DETAILED DESCRIPTION

[0013] The technical solution of the specific implementation method is described below in conjunction with the accompanying drawings.

[0014] It should be noted that: although this specification has described the present invention in detail with reference to the above-mentioned embodiments, ordinary technicians in the field should understand that technicians in the relevant technical field can still modify, combine or replace the present invention with equivalents, and all technical solutions and improvements thereto that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

[0015] refer to Figure 1-Figure 2 A heat exchanger includes a core, the core includes a first plate 11 and a second plate arranged in a stacked manner, the core has a first fluid channel and a second fluid channel isolated from each other, the first fluid channel includes a first hole 12 and a second hole 13 located on the same width side of the core, the first fluid channel also includes a first inter-plate channel located between the first plate 11 and the second plate and corresponding to the first hole 12 and the second hole 13, the first plate 11 and / or the second plate includes a first partition 16 that divides the first inter-plate channel into a first sub-inter-plate channel 14 and a second sub-inter-plate channel 15, the first sub-inter-plate channel 14 is connected to the first hole 12, and the second sub-inter-plate channel 15 is connected to the second hole 13, the heat exchange medium can flow from the first hole 12 through the first sub-inter-plate channel 14, then flow to the second inter-plate channel, and finally flow out of the core through the second hole 13, the medium flow path is roughly U-shaped, the fluid flow path is extended, and the heat exchange efficiency of the heat exchanger is improved.

[0016] The first plate 11 may be substantially the same as the second plate, and will not be described in detail herein.

[0017] refer to Figure 1-Figure 2 The core also includes a first area 17 and a second area 18. In the length direction of the core, the first area 17 is located between the first isolation portion 16 and the second area 18, and the width of the first area 17 is equal to the width of the second area 18. The first plate 11 includes a first main body portion 111, and the width of the first area 17 is half of the distance between the first isolation portion 16 and a short side of the first main body portion 111. The core includes a first blocking portion 19 and a second blocking portion 20. The number of the first blocking portions 19 is multiple, and the first blocking portions 19 are located in the first area 17. The number of the second blocking portions 20 is multiple, and the second blocking portions 20 are located in the second area 18.

[0018] The first blocking portion 19 has a first root portion 191 , and the second blocking portion 20 has a second root portion 201 . In the length direction of the first plate 11 , the maximum distance between two adjacent first roots 191 is L1 , and the minimum distance between two adjacent second roots 201 is L2 , where L2>L1 .

[0019] In such a heat exchanger, the core further includes a first region 17 and a second region 18. In the length direction of the core, the first region 17 is located between the first isolating portion 16 and the second region 18. The width of the first region 17 is equal to the width of the second region 18. The first plate 11 includes a first main body portion 111. The width of the first region 17 is half the distance between the first isolating portion 16 and a short side of the first main body portion 111. The first blocking portion 19 is located in the first region 17. The second blocking portion 20 is located in the second region 18. The first blocking portion 19 has a first root 191. The first blocking portion 20 has a first root 192. The second blocking portion 20 has a second root portion 201. In the length direction of the first plate 11, the maximum distance between two adjacent first roots 191 is L1, and the minimum distance between two adjacent second roots 201 is L2, L2>L1. When the heat exchanger is working, the flow resistance of the fluid when flowing through the first area 17 is greater than the flow resistance of the fluid when flowing through the second area 18, thereby increasing the flow resistance of the fluid flow path close to the first isolation portion 16, so that part of the fluid tends to flow away from the first isolation portion 16, thereby increasing the uniformity of the fluid distribution in the first inter-plate channel.

[0020] refer to Figure 1 The width of the first region 17 is L5, the width of the second region is L6, the distance between the first isolation portion 16 and a short side of the first main body portion 111 is L7, L5=L6, and L5+L6=L7.

[0021] Of course, in the length direction of the core, the first region 17 is located between the first isolation portion 16 and the second region 18 , and the first region and the second region may be offset by a certain position, which will not be elaborated here.

[0022] The first root portion 191 refers to a portion where the first blocking portion 19 is connected to the first main body portion 111 (described in detail below), and the second root portion 201 refers to a portion where the second blocking portion 20 is connected to the first main body portion 111 .

[0023] The maximum distance between two adjacent first roots 191 refers to: there is a distance between any two adjacent first roots 191, where the maximum value of the distance is the maximum distance; the minimum distance between two adjacent second roots 201 refers to: there is a distance between any two adjacent second roots 201, where the minimum value of the distance is the minimum distance, which will not be elaborated here.

[0024] refer to Figure 1-Figure 2In the length direction of the first plate 11, the maximum distance between two adjacent first roots 191 is L1, and the minimum distance between two adjacent second roots 201 is L2, L2>L1. It is defined that the first root 191 away from the first isolation portion 16 in the first area 17 is the first sub-root, and the second root 201 close to the first isolation portion 16 in the second area 18 is the second sub-root. The distance between the first sub-root and the second sub-root is L3, L3≧L1.

[0025] refer to Figure 1-Figure 2 , it is defined that the surface perpendicular to the length direction of the core is the first surface, the projection of the first blocking part 19 on the first surface at least partially overlaps with the projection of the first isolation part 16 on the first surface, and the projection of the second blocking part 20 on the first surface at least partially overlaps with the projection of the first isolation part 16 on the first surface.

[0026] refer to Figure 1-Figure 2 The first root portion 191 is circular, for example, after the first blocking portion 19 is stamped, its shape is roughly hemispherical or spherical, and during the stamping process, there is a chamfer near the top of the first blocking portion 19. The second root portion 201 is circular, for example, after the second blocking portion 20 is stamped, its shape is roughly hemispherical or spherical, and during the stamping process, there is a chamfer near the top of the first blocking portion 19. The distance between two adjacent first roots 191 is L1, and the distance between two adjacent second roots 201 is L2. The center of the first root 191 and the center of the second root 201 are on the same straight line.

[0027] refer to Figure 1-Figure 2 The diameter of the first root 191 is equal to the diameter of the second root 201, the first blocking portion 19 is substantially the same as the second blocking portion 20, and the distance between the first blocking portion 19 adjacent to the second region 18 in the first region 17 and the second blocking portion 20 adjacent to the first region 17 in the second region 18 is L4, L2>L4>L1.

[0028] Of course, the diameter of the first root portion 191 may not be equal to the diameter of the second root portion 201, which will not be elaborated here.

[0029] refer to Figure 3 , along the direction away from the first isolation portion 16, the distance between adjacent first roots 191 increases, and the distance between adjacent second roots 201 increases. For example, the diameter of the first root 191 is the same as the diameter of the second root 201, the distance between the first root 191 gradually increases, and the distance between the second root 201 gradually increases.

[0030] refer to Figure 4Of course, the diameter of the first root portion 191 may not be equal to the diameter of the second root portion 201. For example, the diameter of the first root portion 191 gradually increases, and the diameter of the second root portion 201 gradually increases. The diameter of the first root portion 191 is greater than the diameter of the second root portion 201, which will not be elaborated here.

[0031] The first plate 11 has a first main body 111, the first blocking portion 19 protrudes from the first main body 111, the second blocking portion 20 protrudes from the first main body 111, the second plate has a second main body, the top of the first blocking portion 19 is welded to the second main body, and the top of the second blocking portion 20 is welded to the second main body.

[0032] The first plate 11 has a first rib 161 protruding from the first main body 111 , the second plate has a second rib protruding from the second main body, the second rib is partially sleeved on the first rib 161 , and the first rib 161 is welded to the second rib.

[0033] The first blocking portion 19 , the second blocking portion 20 and the first convex rib 161 protrude in substantially the same direction. Of course, they may also protrude in opposite directions, which will not be elaborated herein.

[0034] The width of the first area 17 is equal to the width of the second area 18, and the width of the first area 17 is half of the distance between the first isolation portion 16 and a short side of the first main body portion 111. The first plate 11 has a third rib 162, and the third rib 162 is located at an end of the first rib 161 away from the first blocking portion 19. The end of the third rib 162 away from the first rib 161 is roughly flush with the other short side of the first main body portion 111, and the third rib 162 is welded to the second main body.

[0035] By definition, the surface perpendicular to the height direction of the core is the second surface, and the projection of the first blocking portion 19 on the second surface is located within the projection of the third rib 162 on the second surface, so that the first plate 1 and the second plate can have the same structure to reduce costs.

[0036] The short side of the first main body portion 111 refers to a side extending in the width direction of the first main body portion 111 , which will not be described in detail herein.

[0037] refer to Figure 5 The first root portion 191 is elliptical, and the second root portion 201 is elliptical. At this time, the diameter of the first root portion 191 refers to the length of the long side or the short side, which will not be elaborated here.

[0038] refer to Figure 6 The first root portion 191 is a rhombus, and the second root portion 201 is a rhombus. Of course, the first root portion 191 can have two or more shapes, and the second root portion 201 can have two or more shapes, which will not be repeated here.

[0039] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A heat exchanger, comprising a core, wherein the core comprises a first plate (11) and a second plate arranged in a stacked manner, and the core has a first fluid channel and a second fluid channel isolated from each other, characterized in that: The first fluid channel comprises a first hole (12) and a second hole (13) located on the same width direction side of the core body, the first fluid channel also comprises a first inter-plate channel located between the first plate (11) and the second plate and corresponding to the first hole (12) and the second hole (13), the first plate (11) and / or the second plate comprises a first separating portion (16) for separating the first inter-plate channel into a first sub-inter-plate channel (14) and a second sub-inter-plate channel (15), the first sub-inter-plate channel (14) is in communication with the first hole (12), and the second sub-inter-plate channel (15) is in communication with the second hole (13); The core body further comprises a first region (17) and a second region (18); in the length direction of the core body, the first region (17) is located between the first isolating portion (16) and the second region (18); the width of the first region (17) is equal to the width of the second region (18); the first plate (11) comprises a first main body portion (111); the width of the first region (17) is half the distance between the first isolating portion (16) and a short side of the first main body portion (111); The core comprises a first blocking portion (19) and a second blocking portion (20), the number of the first blocking portions (19) is plural, and the first blocking portions (19) are located in the first area (17), the number of the second blocking portions (20) is plural, and the second blocking portions (20) are located in the second area (18); The first blocking portion (19) has a first root portion (191), and the second blocking portion (20) has a second root portion (201). In the length direction of the first plate (11), the maximum distance between two adjacent first roots (191) is L1, and the minimum distance between two adjacent second roots (201) is L2, and L2>L1.

2. The heat exchanger according to claim 1, characterized in that: It is defined that the first root (191) in the first region (17) away from the first isolation portion (16) is a first sub-root, and the second root (201) in the second region (18) close to the first isolation portion (16) is a second sub-root, and the distance between the first sub-root and the second sub-root is L3, L3≧L1.

3. The heat exchanger according to claim 2, characterized in that: It is defined that the surface perpendicular to the length direction of the core is the first surface, the projection of the first blocking portion (19) on the first surface at least partially overlaps with the projection of the first isolating portion (16) on the first surface, and the projection of the second blocking portion (20) on the first surface at least partially overlaps with the projection of the first isolating portion (16) on the first surface.

4. The heat exchanger according to claim 3, characterized in that The distance between two adjacent first roots (191) is L1, and the distance between two adjacent second roots (201) is L2.

5. The heat exchanger according to claim 4, characterized in that: Along the direction away from the first isolation portion (16), the distance between adjacent first roots (191) increases, and the distance between adjacent second roots (201) increases.

6. The heat exchanger according to claim 4 or 5, characterized in that: The first root portion (191) is circular, elliptical or rhombus-shaped, the second root portion (201) is circular, elliptical or rhombus-shaped, and the center of the first root portion (191) and the center of the second root portion (201) are on the same straight line.

7. The heat exchanger according to claim 6, characterized in that The diameter of the first root portion (191) is equal to the diameter of the second root portion (201); Alternatively, the diameter of the first root portion (191) is greater than the diameter of the second root portion (201).

8. The heat exchanger according to claim 7, characterized in that The first plate (11) has a first main body (111), the first blocking portion (19) protrudes from the first main body (111), the second blocking portion (20) protrudes from the first main body (111), the second plate has a second main body, the top of the first blocking portion (19) is welded to the second main body, and the top of the second blocking portion (20) is welded to the second main body.

9. The heat exchanger according to claim 8, characterized in that The first plate (11) has a first convex rib (161), the first convex rib (161) protrudes from the first main body (111), the second plate has a second convex rib, the second convex rib protrudes from the second main body, the second convex rib is partially sleeved on the first convex rib (161), and the first convex rib (161) and the second convex rib are welded.

10. The heat exchanger according to claim 9, characterized in that The first plate (11) has a third convex rib (162), the third convex rib (162) is located at an end of the first convex rib (161) away from the first blocking portion (19), the end of the third convex rib (162) away from the first convex rib (161) is substantially flush with the other short side of the first main body (111), and the third convex rib (162) is welded to the second main body.

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