CN118258239A - Heat exchanger - Google Patents

Abstract

The application relates to the technical field of heat exchange, and discloses a heat exchanger which comprises a first plate and a second plate, wherein the first plate is provided with a first bulge, the second plate is provided with a second bulge, and the first bulge and the second bulge are arranged in a same-direction bulge mode. The first bulge includes that first side is protruding and two first middle part are protruding, the second bulge includes that second side is protruding and the second middle part is protruding, laminate the setting as first slab and second slab, make the first lateral wall of second slab of second butt, first lateral wall of first slab of first butt second slab, with form first U type runner between the first lateral wall of second base plate and the second lateral wall of first base plate, form the second U type runner between the first lateral wall of first base plate and the second lateral wall of second base plate, first bulge and the protruding staggered arrangement of second do not exist and nest each other, simplify the bellied structure of first bulge and second, be convenient for process.

Description

Heat exchanger

Technical Field

The application relates to the technical field of heat exchange, in particular to a heat exchanger.

Background

The plate heat exchanger is widely applied to a plurality of industries such as refrigeration, chemical industry and water treatment due to the advantages of high heat exchange efficiency, compact structure, lighter weight and the like, and the performance of the plate heat exchanger is continuously improved. However, the middle blocking part of the plate adopts a nested and laminated assembly mode, so that the middle blocking part of the plate must be provided with a step structure, wherein the higher part is welded in the groove corresponding to the convex rib of the adjacent plate, and the lower part is welded on the substrate surface of the adjacent plate, but this clearly increases the processing difficulty of the plate, and simultaneously also puts higher requirements on the matching precision of the adjacent plate, which is unfavorable for the improvement of the production efficiency.

Therefore, a heat exchanger is needed to solve the above-mentioned problems.

Disclosure of Invention

The application aims to provide a heat exchanger convenient to process.

The technical scheme adopted by the application is as follows:

The heat exchanger comprises a core body, wherein the core body comprises a first plate and a second plate which are arranged in a stacked mode, the first plate comprises a first substrate and a first flanging which is arranged around the first substrate in a surrounding mode, the second plate comprises a second substrate and a second flanging which is arranged around the second substrate in a surrounding mode, the first substrate is provided with a first bulge, the second substrate is provided with a second bulge, and the first bulge and the second bulge are arranged in a protruding mode in the same direction;

the first bulge extends along a first direction, the first bulge comprises a first side bulge and two first middle bulges, first ends of the two first middle bulges are connected with the first side bulge, and one end of the first side bulge, which is not connected with the first middle bulge, extends to the first flanging;

The second bulge extends along the first direction, the second bulge comprises a second side bulge and a second middle bulge, a first end of the second middle bulge is connected with the second side bulge, and one end of the second side bulge, which is not connected with the second middle bulge, extends to the second flanging;

The second bulges are abutted against the first side wall of the first substrate, at least the second ends of the second middle bulges are positioned in the areas between the two first middle bulges, the first bulges are abutted against the first side wall of the second substrate, and at least the second ends of the two first middle bulges are positioned in the areas on two sides of the second middle bulges.

According to the technical scheme, when the first plate and the second plate are stacked, the second protrusions are abutted against the first side wall of the first substrate, the second ends of the at least second middle protrusions are located in the area between the two first middle protrusions, the first protrusions are abutted against the first side wall of the second substrate, and the second ends of the at least two first middle protrusions are located in the areas on two sides of the second middle protrusions. Thus, a first U-shaped flow channel is formed between the first side wall of the second substrate and the second side wall of the first substrate, and a second U-shaped flow channel is formed between the first side wall of the first substrate and the second side wall of the second substrate. The first bulges and the second bulges are staggered, so that the first bulges and the second bulges are not mutually nested and stacked, the structures of the first bulges and the second bulges are simplified, and the processing is convenient.

Drawings

Fig. 1 is a schematic structural view of a heat exchanger according to an embodiment of the present application.

FIG. 2 is a cross-sectional view of a core provided by one embodiment of the present application;

FIG. 3 is a schematic view of a first sheet according to an embodiment of the present application;

FIG. 4 is a schematic view of the first panel of FIG. 3 from a second view;

FIG. 5 is a schematic view of a first view of a second panel according to an embodiment of the present application;

fig. 6 is a schematic structural view of the second plate of fig. 5 at a second view angle.

Fig. 7 is a schematic view of an assembly of a first plate and a second plate provided in an embodiment of the application.

In the figure:

1. A first plate; 11. a first substrate; 111. a first protrusion; 1111. a first middle protrusion; 1112. a first edge bulge; 112. a first groove; 1121. a first middle groove; 1122. a first edge groove; 113. a first through hole A; 114. a first through hole B; 12. a first flanging;

2. A second plate; 21. a second substrate; 211. a second protrusion; 2111. a second middle protrusion; 2112. a second edge portion projection; 212. a first groove; 2121. a second middle groove; 2122. a second edge groove; 213. a second through hole A; 214. a second through hole B; 215. a flow-around bulge; 2151. a first bypass protrusion; 2152. a second bypass protrusion; 22. a second flanging;

3. a top cover plate;

4. a bottom cover plate; 41. a convex portion;

5. A bypass fin;

100. a first U-shaped flow channel; 200. and a second U-shaped flow channel.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the product of the application, are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the referred or elements must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

In order to form a staggered U-shaped flow channel among a plurality of plates which are arranged in a stacked manner, the middle blocking part of the plates is required to be arranged into a stepped structure, a higher part is welded in a groove corresponding to a convex rib of an adjacent plate, and a lower part is welded on a substrate surface of the adjacent plate, so that the processing difficulty of the plates is increased, the matching precision requirement of the adjacent plates is improved, and the production efficiency of the heat exchanger is influenced.

As shown in fig. 1 and 2, the present embodiment provides a heat exchanger including a core body, and the core body is composed of a first plate 1 and a second plate 2 which are stacked, the first plate 1 includes a first substrate 11 and a first flange 12 surrounding the first substrate 11, the second plate 2 includes a second substrate 21 and a second flange 22 surrounding the second substrate 21, the first substrate 11 is provided with a first protrusion 111, the second substrate 21 is provided with a second protrusion 211, and the first protrusion 111 and the second protrusion 211 are protruded in the same direction. Referring to fig. 3 and 4, the first protrusion 111 extends in the first direction, the first protrusion 111 includes a first side protrusion 1112 and two first middle protrusions 1111, first ends of the two first middle protrusions 1111 are connected to the first side protrusion 1112, and an end of the first side protrusion 1112, to which the first middle protrusion 1111 is not connected, extends to the first flange 12. Referring to fig. 5 and 6, the second protrusion 211 extends in a first direction, the second protrusion 211 includes a second side protrusion 2112 and a second middle protrusion 2111, a first end of the second middle protrusion 2111 is connected to the second side protrusion 2112, and an end of the second side protrusion 2112, to which the second middle protrusion 2111 is not connected, extends to the second flange 22, the first direction being the ab direction in fig. 3 and 5.

Referring to fig. 7, when the first sheet 1 and the second sheet 2 are stacked and the first flange 12 and the second flange 22 are welded to form a core, the second protrusion 211 abuts against the first sidewall of the first substrate 11, at least the second end of the second middle protrusion 2111 is located in the area between the two first middle protrusions 1111, the first protrusion 111 abuts against the first sidewall of the second substrate 21, and at least the two first middle protrusions 1111 are located in the areas on both sides of the second middle protrusion 2111, so that the first U-shaped flow channel 100 can be formed between the first sidewall of the second substrate 21 and the second sidewall of the first substrate 11, and the second U-shaped flow channel 200 can be formed between the first sidewall of the first substrate 11 and the second sidewall of the second substrate 21. Because the abutting of the first plate 1 and the second plate 2 is a convex structure abutting plane structure, namely the overall height of the first convex 111 is consistent, the overall height of the second convex 211 is also consistent, and the convex directions of the first convex 111 and the second convex 211 are the same, the processing requirement on the convex structure is reduced, the abutting area of the convex structure and the plane structure, where the first plate 1 and the second plate 2 can be abutted by the convex structure, is increased, the requirement on the assembly precision of the core body can be further reduced, and the production efficiency is improved.

With continued reference to fig. 3 and 4, in this embodiment, the first side protrusion 1112 has an arc-shaped connection section, the arc-shaped connection section is located at an end of the first side protrusion 1112, which is not connected to the first flange 12, and two ends of the arc-shaped connection section are respectively connected to one first middle protrusion 1111, and the two first middle protrusions 1111 are spaced along a second direction, which is the cd direction in fig. 3, and the second direction is perpendicular to the first direction. The arc-shaped connecting section is a transition section formed by connecting the main body section of the first side bulge 1112 and the first middle bulge 1111, in the first U-shaped flow channel 100, fluid is separated by the first bulge 111, compared with the transition section which is arranged in a straight line shape, the arc-shaped connecting section is more beneficial to the uniform distribution of the fluid at the transition section, and the uniform heat exchange of different fluids in the first U-shaped flow channel 100 and the second U-shaped flow channel 200 can be enhanced. Preferably, the second ends of the first middle protrusions 1111 and the second ends of the second middle protrusions 2111 are both arc-shaped ends.

In this embodiment, the refrigerant flows in the first U-shaped flow channel 100 and the refrigerant flows in the second U-shaped flow channel 200, so as to further ensure the flow speed of the refrigerant, the width of one first middle protrusion 1111 is L1, the distance between two first middle protrusions 1111 is T, the width of the second middle protrusion 2111 is L2, and 2xl1+t is equal to or greater than L2 along the second direction. That is, the width of the portion of the first middle protrusion 1111 sandwiched between the second side wall of the first substrate 11 and the first side wall of the second substrate 21 is larger than the width of the portion of the second middle protrusion 2111 sandwiched between the first side wall of the first substrate 11 and the second side wall of the second substrate 21 so that the flow area of the second U-shaped flow channel 200 is larger than the flow area of the first U-shaped flow channel 100.

Further, along the stacking direction of the first sheet 1 and the second sheet 2, the height of the first protrusion 111 is H1, the height of the second protrusion 211 is H2, and H2 > H1, i.e. the circulation volume of the second U-shaped flow channel 200 is further increased by the heights of the different protrusions, so that the circulation volume of the second U-shaped flow channel 200 is larger than the circulation volume of the first U-shaped flow channel 100.

Referring to fig. 1 and 2, the heat exchanger further includes a top cover plate 3, the top cover plate 3 abuts against the second protrusion 211, and a second U-shaped flow channel 200 is also formed between the second plate 2 and the top cover plate 3. The top cover plate 3 is a flat plate structure, and in accordance with the foregoing, the second protrusions 211 can directly abut against the flat plate structure, and the top cover plate 3 is a flat plate structure, which meets the appearance requirements of users on the heat exchanger more than the existing arrangement of ribs on the top plate of the heat exchanger.

With continued reference to fig. 2, the heat exchanger further includes a bottom cover plate 4, and since the heat exchanger provides that the coolant flow passage is one more than the refrigerant flow passage, i.e., in this embodiment, the second U-shaped flow passage 200 is more than the first U-shaped flow passage 100, the bottom cover plate 4 has a protrusion 41, and the protrusion 41 abuts against a region between two first middle protrusions 1111 of the first side wall of the first plate 1 to form the second U-shaped flow passage 200 between the first plate 1 and the bottom cover plate 4. Preferably, the convex portion 41 of the bottom cover plate 4 is structurally identical to the second convex portion 211 of the second plate 2.

In some embodiments, referring to fig. 3 and 5, in the first direction, the first substrate 11 is provided with a first through hole a113 and a first through hole B114 at both ends, the first through hole a113 is provided near the first side protrusion 1112, the second substrate 21 is provided with a second through hole a213 and a second through hole B214 at both ends, the second through hole B214 is provided near the second side protrusion 2112, the first sheet 1 is stacked with the second sheet 2, the first through hole a113 and the second through hole a213 correspond, and the first through hole B114 and the second through hole B214 correspond. In addition, the first side wall of the first plate 1 has a sealing bead provided around the first through hole a113, the second side wall of the first plate 1 has a sealing bead provided around the first through hole B114, the first side wall of the second plate 2 has a sealing bead provided around the second through hole B214, the second side wall of the second plate 2 has a sealing bead provided around the second through hole a213, and when the first plate 1 and the second plate 2 are stacked as shown in fig. 2, the adjacent two sealing beads are abutted. The first U-shaped flow channel 100 is only communicated with the first through hole a113 by abutting the sealing convex ring, and the first through hole B114 is separated from the first U-shaped flow channel 100 by the sealing convex ring. The second U-shaped flow channel 200 is only communicated with the second through hole B214, and the second through hole a213 is separated from the second U-shaped flow channel 200 by a sealing flange. In this embodiment, when the fluid in the first U-shaped flow channel 100 is a refrigerant, the core is connected to the refrigerant pipeline at one side of the first through hole a113 and the second through hole a213, and the refrigerant enters the first U-shaped flow channel 100 only through the first through hole a 113. And the fluid in the second U-shaped flow channel 200 is coolant, the core body is connected with a coolant pipeline at one side of the first through hole B114 and the second through hole B214, and the coolant only enters the second U-shaped flow channel 200 through the second through hole B214.

In some embodiments, the first side wall of the second plate 2 is provided with a bypass protrusion 215, the bypass protrusion 215 abutting the second side wall of the first plate 1. The effect of the bypass protrusion 215 is to make the fluid distribution in the flow channel more uniform, and because the distance between the first side wall of the second plate 2 and the second side wall of the first plate 1 in the stacking direction of the first plate 1 and the second plate 2 is smaller, the bypass protrusion 215 can be directly arranged on the second plate 2 to realize the bypass effect on the refrigerant for reducing the assembly steps.

The bypass projection 215 comprises a first bypass projection 2151, the first bypass projection 2151 being located on the side of the second through-hole a213 facing away from the second flange 22, i.e. the refrigerant will first pass the bypass of the first bypass projection 2151 when entering the first U-shaped flow channel 100 through the second through-hole a 213. The bypass protrusions 215 of the present embodiment are elliptical protrusions, and the short sides of the first bypass protrusions 2151 disposed at intervals extend along a first direction, and the long sides of the first bypass protrusions 2151 extend along a second direction, where the first direction is the flow direction of the refrigerant, so as to enhance the flow splitting effect of the first bypass protrusions 2151 at the second through holes a 213. The bypass protrusions 215 further include second bypass protrusions 2152, the second bypass protrusions 2152 are located at other positions of the first side wall of the second plate 2, short sides of the second bypass protrusions 2152 arranged at intervals extend in the second direction, long sides of the second bypass protrusions 2152 extend in the first direction, and the obstruction to the flow of the refrigerant is reduced while uniform distribution of the refrigerant is achieved. Preferably, the circumferential projection 215 is formed by a punching process.

In some embodiments, the first protrusion 111 of the first sheet 1 and the second protrusion 211 of the second sheet 2 are formed by a stamping process, and then the first side wall of the first sheet 1 has the first groove 212 corresponding to the first protrusion 111, and the first side wall of the second sheet 2 has the second groove corresponding to the second protrusion 211. In this embodiment, the first protrusion 111 and the second protrusion 211 have the same length in the first direction, and the second middle protrusion 2111 has a longer length in the first direction than the first middle protrusion 1111, so when the first sheet 1 and the second sheet 2 are stacked to form the core, with continued reference to fig. 7, the second end of the second middle protrusion 2111 will be located in the arc-shaped connection section of the first side groove 1122, and the second end of the first middle protrusion 1111 will be flush with the first end of the second middle protrusion 2111.

Optionally, the heat exchanger further comprises a bypass fin 5, the bypass fin 5 being sandwiched between the second side wall of the second plate 2 and the first side wall of the first plate 1. The effect of the bypass fin 5 is consistent with that of the bypass protrusion 215, so that the fluid distribution in the flow channel is more uniform, but the distance between the first side wall of the first plate 1 and the second side wall of the second plate 2 in the stacking direction of the first plate 1 and the second plate 2 is larger, if the protrusion is arranged on the first plate 1, the height of the protrusion is higher, the processing difficulty is increased, the strength of the first plate 1 is affected, and therefore, the bypass fin 5 is arranged in the second U-shaped flow channel 200. The bypass fins 5 extend in the first direction to promote the coolant flow in the first direction, and the bypass fins 5 are also sandwiched in the second hairpin flow passages 200 between the second plate 2 and the header plate 3.

In some embodiments, an area between the two first middle protrusions 1111 may be provided with an abutment (not shown in the drawings) in the same protruding direction as the first protrusions 111, the abutment abutting against the second protrusions 211; or the region between the two first middle projections 1111 may be provided with an abutting portion (not shown in the drawing) opposite in projecting direction to the first projections 111, which abuts against the second projections 211, although the structure of the first sheet 1 and the second sheet 2 is complicated with respect to the above-described embodiment, an effect of simplifying the first projections 111 and the second projections 211 may be achieved.

It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, while the application has been described in connection with the above embodiments, the application is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the application, which is set forth in the following claims.

Claims (10)

1. The heat exchanger is characterized by comprising a core body, wherein the core body comprises a first plate (1) and a second plate (2) which are arranged in a stacked mode, the first plate (1) comprises a first substrate (11) and a first flanging (12) which is arranged around the first substrate (11), the second plate (2) comprises a second substrate (21) and a second flanging (22) which is arranged around the second substrate (21), the first substrate (11) is provided with a first bulge (111), the second substrate (21) is provided with a second bulge (211), and the first bulge (111) and the second bulge (211) are arranged in a protruding mode in the same direction;

The first protrusions (111) extend along a first direction, the first protrusions (111) comprise a first edge protrusion (1112) and two first middle protrusions (1111), first ends of the two first middle protrusions (1111) are connected with the first edge protrusion (1112), and one end of the first edge protrusion (1112) which is not connected with the first middle protrusion (1111) extends to the first flanging (12);

The second protrusion (211) extends along the first direction, the second protrusion (211) comprises a second side protrusion (2112) and a second middle protrusion (2111), a first end of the second middle protrusion (2111) is connected with the second side protrusion (2112), and an end of the second side protrusion (2112) not connected with the second middle protrusion (2111) extends to the second flanging (22);

the second protrusions (211) are abutted against the first side wall of the first substrate (11), at least the second ends of the second middle protrusions (2111) are located in the area between the two first middle protrusions (1111), the first protrusions (111) are abutted against the first side wall of the second substrate (21), and the second ends of the at least two first middle protrusions (1111) are located in the area on two sides of the second middle protrusions (2111).

2. The heat exchanger according to claim 1, wherein a region between two of the first middle projections (1111) is provided with an abutment portion in the same direction as the projection of the first projection (111), the abutment portion abutting against the second projection (211); or alternatively, the first and second heat exchangers may be,

The region between the two first middle protrusions (1111) is provided with an abutting portion opposite to the protruding direction of the first protrusions (111), and the abutting portion abuts against the second protrusions (211).

3. The heat exchanger according to claim 1, wherein the first side protrusion (1112) has an arc-shaped connection section, the arc-shaped connection section is located at an end of the first side protrusion (1112) where the first flange (12) is not connected, two ends of the arc-shaped connection section are respectively connected to one first middle protrusion (1111), and two first middle protrusions (1111) are arranged at intervals along a second direction, and the second direction is perpendicular to the first direction.

4. A heat exchanger according to claim 3, wherein one of the first middle protrusions (1111) has a width L1, the distance between two of the first middle protrusions (1111) is T, and the width of the second middle protrusion (2111) is L2,2 x l1+t being equal to or larger than L2, in the second direction.

5. The heat exchanger according to claim 4, wherein the first protrusion (111) has a height H1 and the second protrusion (211) has a height H2, H2 > H1, in the stacking direction of the first plate (1) and the second plate (2).

6. A heat exchanger according to claim 5, wherein the first side wall of the second plate (2) is provided with a flow-around protrusion (215), the flow-around protrusion (215) being in abutment with the second side wall of the first plate (1);

The heat exchanger further comprises a bypass fin (5), and the bypass fin (5) is clamped between the second side wall of the second plate (2) and the first side wall of the first plate (1).

7. The heat exchanger according to claim 1, wherein the first side wall of the first plate (1) has a first groove (212) corresponding to the first protrusion (111), and the first side wall of the second plate (2) has a second groove corresponding to the second protrusion (211).

8. The heat exchanger according to claim 1, further comprising a top cover plate (3), the top cover plate (3) abutting the second protrusion (211), the top cover plate (3) being of flat plate construction.

9. The heat exchanger according to claim 1, further comprising a bottom cover plate (4), the bottom cover plate (4) having a protrusion (41), the protrusion (41) abutting the area between two of the first middle protrusions (1111) of the first side wall of the first plate (1).

10. The heat exchanger according to claim 1, wherein, along the first direction, a first through hole a (113) and a first through hole B (114) are provided at both ends of the first substrate (11), the first through hole a (113) is provided near the first side protrusion (1112), a second through hole a (213) and a second through hole B (214) are provided at both ends of the second substrate (21), the second through hole B (214) is provided near the second side protrusion (2112), the first sheet (1) is stacked with the second sheet (2), the first through hole a (113) and the second through hole a (213) correspond, and the first through hole B (114) and the second through hole B (214) correspond;

the first side wall of the first plate (1) is provided with a sealing convex ring arranged on the circumference of the first through hole A (113), the second side wall of the first plate (1) is provided with a sealing convex ring arranged on the circumference of the first through hole B (114), the first side wall of the second plate (2) is provided with a sealing convex ring arranged on the circumference of the second through hole B (214), the second side wall of the second plate (2) is provided with a sealing convex ring arranged on the circumference of the second through hole A (213), the first plate (1) and the second plate (2) are stacked, and two adjacent sealing convex rings are in butt joint.