Heat exchanger

Abstract

The heat exchanger comprises a core body, the core body comprises a first plate sheet and a second plate sheet, the core body further comprises a first area and a second area, in the length direction of the core body, the first area is located between a first isolation part and the second area, the first plate sheet comprises a first main body part, the first main body part comprises a first side part, and the second side part comprises a second side part. The width of the first region is half of the distance between the first isolation part and the first side part; the core body comprises a first blocking part, the first blocking part is located in the first area and provided with a first containing cavity, the first blocking part is provided with a first opening, the first opening is communicated with the first containing cavity, the first main body part is provided with a second side part, and the second side part is communicated with the first containing cavity. The second side part extends in the length direction of the first main body part, the inlet pore channel is located between the second side part and the outlet pore channel, and the first opening faces the second side part. And the distribution uniformity of the fluid in the first inter-plate channel is improved.

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 an inlet channel and an outlet channel 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 inlet channel and the outlet channel, the first plate and / or the second plate comprising a first isolating portion which divides 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 inlet channel, and the second sub-inter-plate channel being connected to the outlet channel; the core further comprising a first region and a second region, in the length direction of the core, the first region being located between the first isolating portion and the second region, the width of the first region being the same as the width of the second region The widths of the two domains are equal, the first plate includes a first main body, the first main body includes a first side portion, the first side portion extends from the width direction of the first main body, and the width of the first area is half of the distance between the first isolation portion and the first side portion; the core includes a first blocking portion, the first blocking portion is located in the first area, the first blocking portion includes a first wall portion and a second wall portion, the second wall portion extends from an end portion of the first wall portion, the first blocking portion has a first accommodating cavity, the first accommodating cavity is located between the first wall portion and the second wall portion, the first blocking portion has a first opening, the first opening is connected to the first accommodating cavity, the first main body has a second side portion, the second side portion extends from the length direction of the first main body, the inlet channel is located between the second side portion and the outlet channel, and the first opening faces the second side portion.

[0004] Such a heat exchanger has a core body including a first area and a second area. In the length direction of the core body, 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 first blocking part has a first accommodating cavity, which is located between the first wall part and the second wall part. The first blocking part has a first opening, which is connected to the first accommodating cavity. The first main body has a second side part, which extends from the length direction of the first main body, and the first opening faces the second side part. When the heat exchanger is working, when the fluid flows through the first area, part of the fluid will enter the first accommodating cavity through the first opening. The first blocking part forms a certain resistance to the flow of the fluid, so that part of the fluid flowing to the first area 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 schematic structural diagram of a first plate of an embodiment of a heat exchanger in the present application;

[0006] Figure 2 yes Figure 1 A partial enlarged view of part A;

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

[0009] Reference numerals:

[0010] A first plate 1, a first main body portion 11, a first side portion 111, a second side portion 112, a third side portion 113, an inlet channel 12, an outlet channel 13, a first inter-sub-plate channel 14, a second inter-sub-plate channel 15, a first isolating portion 16, a first convex rib 161, a third convex rib 162, a first area 17, a second area 18, a first blocking portion 19, a first portion 191, a first wall portion 1911, a first main body wall portion 1912, a middle portion 192, a first arc portion 1921, a second arc portion 1922, a second portion 193, a second wall portion 1931, a second main body wall portion 1932, a first accommodating cavity 20, and a first opening 21. DETAILED DESCRIPTION

[0011] The technical solution of the specific implementation method is described below in conjunction with the accompanying drawings.

[0012] 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.

[0013] refer to Figure 1-Figure 2 A heat exchanger includes a core, the core includes a first plate 1 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 an inlet channel 12 and an outlet channel 13 located on the same width direction side of the core, the first fluid channel also includes a first inter-plate channel located between the first plate 1 and the second plate and corresponding to the inlet channel 12 and the outlet channel 13, the first plate 1 and / or the second plate includes a first separating portion 16 that separates 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 inlet channel 12, and the second sub-inter-plate channel 15 is connected to the outlet channel 13, the heat exchange medium can flow from the inlet channel 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 outlet channel 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.

[0014] The first plate 1 may be substantially the same as the second plate, and will not be described in detail herein.

[0015] refer to Figure 1-Figure 2 The core also 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 1 includes a first main body portion 11. The first main body portion 11 includes a first side portion 111. The first side portion 111 extends from the width direction of the first main body portion 11. The width of the first region 17 is half of the distance between the first isolating portion 16 and the second side portion 112. The core includes a first blocking portion 19. The first blocking portion 19 is located in the first region 17. The first blocking portion 19 includes a first side portion 111. A wall portion 1911 and a second wall portion 1931, the second wall portion 1931 extends from one end of the first wall portion 1911, the first blocking portion 19 has a first accommodating cavity 20, the first accommodating cavity 20 is located between the first wall portion 1911 and the second wall portion 1931, the first blocking portion 19 has a first opening 21, the first opening 21 is connected to the first accommodating cavity 20, the first main body portion 11 has a second side portion 112, the second side portion 112 extends from the length direction of the first main body portion 11, the inlet channel 12 is located between the second side portion 112 and the outlet channel 13, and the first opening 21 faces the second side portion 112.

[0016] Such a heat exchanger, the core 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, the width of the first area 17 is equal to the width of the second area 18, the first plate 1 includes a first main body 11, the width of the first area 17 is half the distance between the first isolation portion 16 and a short side of the first main body 11, the first blocking portion 19 is located in the first area 17, the first blocking portion 19 has a first accommodating cavity 20, the first accommodating cavity 20 is located between the first wall portion 1911 and the second wall portion 1931, the first blocking portion The portion 19 has a first opening 21, which is connected to the first accommodating chamber 20. The first main body portion 11 has a first side portion 111, which extends from the length direction of the first main body portion 11. The first opening 21 faces the first side portion 111. When the heat exchanger is working, when the fluid flows through the first area 17, part of the fluid will enter the first accommodating chamber 20 through the first opening 21. The first blocking portion 19 forms a certain resistance to the flow of the fluid, so that part of the fluid flowing to the first area 17 tends to flow away from the first isolation portion 16, thereby improving the uniformity of the fluid distribution in the first inter-plate channel.

[0017] refer to Figure 1 The width of the first region 17 is L4, the width of the second region 18 is L5, the distance between the first isolation portion 16 and a short side of the first main body portion 11 is L6, L4=L5, and L4+L5=L6.

[0018] refer to Figure 1 The first blocking portion 19 includes a first portion 191, a middle portion 192 and a second portion 193. The first portion 191 is located at one end of the middle portion 192, and the second portion 193 is located at the other end of the middle portion 192. The first blocking portion 19 is substantially V-shaped.

[0019] Of course, the first blocking portion 19 may also be in other shapes, which will not be described in detail here.

[0020] The middle portion 192 may be a rounded corner portion formed when the first blocking portion 19 is formed, or may be an arc portion formed when the first blocking portion 19 is formed, so as to reduce the fluid flow resistance, which will not be elaborated here.

[0021] The first plate 1 includes a flange, wherein a portion of the flange extends from the first side portion 111 , and a portion of the flange extends from the second side portion 112 , which will not be described in detail herein.

[0022] refer to Figure 2The first wall portion 1911 includes a first main wall portion 1912 and a first arc-shaped portion 1921, the second wall portion 1931 includes a second main wall portion 1932 and a second arc-shaped portion 1922, the first arc-shaped portion 1921 extends from the second arc-shaped portion 1922, the first main wall portion 1912 is located at the end of the first arc-shaped portion 1921 away from the second arc-shaped portion 1922, the second main wall portion 1932 is located at the end of the second arc-shaped portion 1922 away from the first arc-shaped portion 1921, the inner wall of the first portion 191 is the first main wall portion 1912, the inner wall of the middle portion 192 is the first arc-shaped portion 1921 and the second arc-shaped portion 1922, and the inner wall of the second portion 193 is the second main wall portion 1932.

[0023] refer to Figure 2 The first opening 21 is located at an end of the first main body wall portion 1912 away from the first arc-shaped portion 1921 , and the first opening 21 is located at an end of the second main body wall portion 1932 away from the second arc-shaped portion 1922 .

[0024] refer to Figure 1 The included angle between the first main body wall portion 1912 and the second side portion 112 is θ1, 30°≤θ1≤60°, and the included angle between the second main body wall portion 1932 and the second side portion 112 is θ2, 30°≤θ2≤60°.

[0025] refer to Figure 1 The distance between the end of the first main wall portion 1912 away from the first arc portion 1921 and the second side portion 112 is L1, and the distance between the end of the second main wall portion 1932 away from the second arc portion 1922 and the second side portion 112 is L2, L1=L2, and θ1=θ2.

[0026] refer to Figure 1 , it is defined that the plane perpendicular to the length direction of the first main body portion 11 is the first projection plane, the projection of the first main body wall portion 1912 on the first projection plane at least partially overlaps with the projection of the first isolation portion 16 on the first projection plane, and the projection of the second main body wall portion 1932 on the first projection plane at least partially overlaps with the projection of the first isolation portion 16 on the first projection plane.

[0027] refer to Figure 1 The first main body wall portion 1912 of any first blocking portion 19 is parallel to the first main body wall portions 1912 of the other first blocking portions 19, the second main body wall portion 1932 of any first blocking portion 19 is parallel to the second main body wall portions 1932 of the other second blocking portions, and the first main body wall portions 1912 of the multiple first blocking portions 19 are at the same distance from the first side portion 111.

[0028] Reference Figure 2In the length direction of the first plate 1 , the distance between two adjacent first main wall portions 1912 is L3 , that is, the first blocking portions 19 are arranged equidistantly in the first region 17 .

[0029] Of course, reference Figure 3 The first blocking portions 19 may also be arranged at non-equidistant intervals in the first region 17, for example, the distance between adjacent first blocking portions 19 may be gradually increased; Figure 4 In the up-down direction of the first main body 11, the first blocking portions 19 may be staggered in the first area 17, which will not be described in detail herein.

[0030] refer to Figure 1 The first blocking portion 19 protrudes from the first main body portion 11 , the second plate has a second main body portion, and the top of the first blocking portion 19 is welded to the second main body portion.

[0031] refer to Figure 1 The first plate 1 has a first convex rib 161, which protrudes from the first main body 11, and the second plate has a second convex rib, which 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 is welded to the second convex rib.

[0032] Reference Figure 1 The first plate 1 has a third rib 162, which is located at an end of the first rib 161 away from the first blocking portion 19, the first main body 11 has a third side portion 113, the end of the third rib 162 away from the first rib 161 is substantially flush with the third side portion 113, and the third rib 162 is welded to 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] It is defined that the surface perpendicular to the height direction of the core is the second projection surface, and the projection of the first blocking portion 19 on the second projection surface is located within the projection of the third rib 162 on the second projection surface, so that the first plate 1 and the second plate can have the same structure to reduce costs.

[0034] The first blocking portion 19 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.

[0035] 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 (1) and a second plate arranged in a stacked manner, wherein the core has a first fluid channel and a second fluid channel isolated from each other, wherein: The first fluid channel comprises an inlet channel (12) and an outlet channel (13) located on the same width direction side of the core, the first fluid channel also comprises a first inter-plate channel located between the first plate (1) and the second plate and corresponding to the inlet channel (12) and the outlet channel (13), the first plate (1) and / or the second plate comprises a first partition (16) for dividing 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 inlet channel (12), and the second sub-inter-plate channel (15) is in communication with the outlet channel (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 (1) comprises a first main body portion (11); the first main body portion (11) comprises a first side portion (111); the first side portion (111) extends from the width direction of the first main body portion (11); the width of the first region (17) is half of the distance between the first isolating portion (16) and the first side portion (111); The core body comprises a first blocking portion (19), the first blocking portion (19) is located in the first area (17), the first blocking portion (19) comprises a first wall portion (1911) and a second wall portion (1931), the second wall portion (1931) extends from one end of the first wall portion (1911), the first blocking portion (19) has a first accommodating cavity (20), the first accommodating cavity (20) is located between the first wall portion (1911) and the second wall portion (1931), the first blocking portion (19) has a first opening (21), the first opening (21) is connected to the first accommodating cavity (20), the first main body (11) has a second side portion (112), the second side portion (112) extends from the length direction of the first main body (11), the inlet channel (12) is located between the second side portion (112) and the outlet channel (13), and the first opening (21) faces the first side portion (111).

2. The heat exchanger according to claim 1, characterized in that: The first wall portion (1911) includes a first main wall portion (1912) and a first arc-shaped portion (1921), and the second wall portion (1931) includes a second main wall portion (1932) and a second arc-shaped portion (1922), the first arc-shaped portion (1921) extends from the second arc-shaped portion (1922), the first main wall portion (1912) is located at an end of the first arc-shaped portion (1921) away from the second arc-shaped portion (1922), the second main wall portion (1932) is located at an end of the second arc-shaped portion (1922) away from the first arc-shaped portion (1921), the first opening (21) is located at an end of the first main wall portion (1912) away from the first arc-shaped portion (1921), and the first opening (21) is located at an end of the second main wall portion (1932) away from the second arc-shaped portion (1922).

3. The heat exchanger according to claim 2, characterized in that: The included angle between the first main body wall portion (1912) and the second side portion (112) is θ1, 30°≤θ1≤60°, and the included angle between the second main body wall portion (1932) and the second side portion (112) is θ2, 30°≤θ2≤60°.

4. The heat exchanger according to claim 3, characterized in that The distance between the end of the first main body wall portion (1912) away from the first arc-shaped portion (1921) and the second side portion (112) is L1, and the distance between the end of the second main body wall portion (1932) away from the second arc-shaped portion (1922) and the second side portion (112) is L2, L1=L2, and θ1=θ2.

5. The heat exchanger according to any one of claims 1 to 4, characterized in that: It is defined that a plane perpendicular to the length direction of the first main body portion (11) is a first projection plane, a projection of the first main body wall portion (1912) on the first projection plane at least partially overlaps with a projection of the first isolation portion (16) on the first projection plane, and a projection of the second main body wall portion (1932) on the first projection plane at least partially overlaps with a projection of the first isolation portion (16) on the first projection plane.

6. The heat exchanger according to claim 5, characterized in that The first blocking portion (19) comprises a first portion (191), a middle portion (192) and a second portion (193), wherein the first portion (191) is located at one end of the middle portion (192), and the second portion (193) is located at the other end of the middle portion (192), and the first blocking portion (19) is roughly V-shaped, wherein the inner wall of the first portion (191) is the first main body wall portion (1912), the inner wall of the middle portion (192) is the first arc-shaped portion (1921) and the second arc-shaped portion (1922), and the inner wall of the second portion (193) is the second main body wall portion (1932).

7. The heat exchanger according to claim 6, characterized in that In the length direction of the first plate (1), the distance between two adjacent first main body wall portions (1912) is L3; Alternatively, in a direction away from the first isolation portion (16), the distance between adjacent first main body wall portions (1912) increases.

8. The heat exchanger according to claim 7, characterized in that The first main body wall portion (1912) of any one of the first blocking portions (19) is parallel to the first main body wall portions (1912) of the remaining first blocking portions (19), the second main body wall portion (1932) of any one of the first blocking portions (19) is parallel to the second main body wall portions (1932) of the remaining second blocking portions, and the first main body wall portions (1912) of multiple first blocking portions (19) are at equal distances from the first side portion (111).

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

10. The heat exchanger according to claim 9, characterized in that The first plate (1) has a first convex rib (161), the first convex rib (161) protrudes from the first main body (11), 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; The first plate (1) has a third convex rib (162), and the third convex rib (162) is located at an end of the first convex rib (161) away from the first blocking portion (19). The first main body (11) has a third side portion (113), and the end of the third convex rib (162) away from the first convex rib (161) is substantially flush with the third side portion (113). The third convex rib (162) is welded to the second main body.

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