CN217058468U

CN217058468U - Heat exchange plate of plate heat exchanger

Info

Publication number: CN217058468U
Application number: CN202123360925.1U
Authority: CN
Inventors: 马文鑫; 雷晨辉; 王永亮; 张振; 张学伟; 魏强; 张馨宇; 任高林
Original assignee: Beijing Aerospace Yisen Wind Tunnel Engineering Technology Co ltd
Current assignee: Beijing Aerospace Yisen Wind Tunnel Engineering Technology Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-07-26
Anticipated expiration: 2031-12-29

Abstract

The invention provides a heat exchange plate of a plate heat exchanger, which comprises a plate body, wherein the plate body comprises a heat exchange area, the surface of the heat exchange area is provided with a plurality of first flow guide parts which are arranged in a quadrilateral structure, each first flow guide part comprises a first flow guide groove and a second flow guide groove, the protruding directions of the first flow guide grooves are opposite, and the first flow guide grooves and the second flow guide grooves form four sides of the first flow guide parts; when the sheet body is assembled, the first diversion grooves and the second diversion grooves which correspond to each other in the same group form a flow passage for fluid to pass through.

Description

Heat exchange plate of plate heat exchanger

Technical Field

The utility model relates to a heat exchanger field especially relates to a plate heat exchanger's heat transfer board.

Background

The plate heat exchanger is a high-efficiency heat exchanger and is widely used in the industries of air conditioning equipment, heat supply of buildings, light food industry and the like. The plate heat exchanger is composed of the following parts: a group of thin metal heat exchange plates, a sealing gasket and a compressing device which are compressed together. The surface of the thin metal heat exchanger plates is usually machined to a special shape, such as corrugated or herringbone. The edges of two adjacent plates are provided with clamping gaskets or sealing gaskets to prevent liquid from flowing out, so that the aim of sealing is fulfilled. Cold and hot fluids alternately flow through two sides of the heat exchange plate and are transferred through the heat exchange area of the heat exchange plate.

The heat exchange area of the existing heat exchange plate is usually corrugated or herringbone, the structure is simple, the fluid disturbance is not strong, and the heat exchange efficiency needs to be improved.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a heat exchanger plate of a plate heat exchanger to at least solve the above technical problems existing in the prior art.

The invention provides a heat exchange plate of a plate heat exchanger, which comprises a plate sheet body, wherein the plate sheet body comprises a heat exchange area, the surface of the heat exchange area is provided with a plurality of first flow guide parts which are arranged in a quadrilateral structure, each first flow guide part comprises a first flow guide groove and a second flow guide groove, the protruding directions of the first flow guide grooves are opposite, and the first flow guide grooves and the second flow guide grooves form four sides of the first flow guide parts; when the sheet body is installed in an assembly mode, the first guide grooves and the second guide grooves which correspond to each other in the same assembly mode form flow channels for fluid to pass through.

In an embodiment, the first diversion trench and the second diversion trench are both in a strip shape.

In an embodiment, each of the edges of the first flow guide part includes at least two first flow guide grooves or second flow guide grooves, and the protruding directions of the adjacent edges of the first flow guide part are different.

In an embodiment, a bottom side of the first flow guide portion is disposed obliquely with respect to a horizontal direction, and an included angle between the bottom side of the first flow guide portion and the horizontal direction is greater than or equal to 15 degrees.

In an embodiment, the first flow guiding portions are distributed on the heat exchange area in the order of rows and columns, and adjacent first flow guiding portions share adjacent sides.

In an embodiment, the heat exchange zone further comprises a second flow guiding part, wherein the second flow guiding part comprises a first side and a second side at the top and the bottom of the heat exchange zone, and a third side and a fourth side at the left and the right of the heat exchange zone;

the first edge and the second edge are formed by a plurality of groups of first diversion grooves which are arranged at intervals, and each group of the first diversion grooves at least comprises two diversion grooves; the third edge and the fourth edge are formed by a plurality of groups of second diversion grooves which are arranged at intervals, and each group of second diversion grooves at least comprises two diversion grooves.

In an embodiment, each of the first flow guide grooves of the first and second sides is parallel to a side of the first flow guide part, and each of the second flow guide grooves of the third and fourth sides is parallel to a bottom side of the first flow guide part.

In an embodiment, the heat transfer area further includes a third flow guiding portion, and the third flow guiding portion is partially distributed inside the first flow guiding portion quadrilateral structure; the third diversion part is also provided with the first diversion grooves in a staggered manner, and the third diversion part is provided with the third edge and the fourth edge in a staggered manner.

In an implementation manner, the third diversion part includes a third diversion groove and a fourth diversion groove that protrude in opposite directions, the third diversion groove and the fourth diversion groove form a quadrilateral structure of the third diversion part, and four sides of the third diversion part and four sides of the first diversion part are respectively corresponding and arranged in parallel.

In an implementation manner, the plate body further includes a diversion region, the diversion region is arranged in a triangular structure, and the diversion region is arranged at the upper end and the lower end of the heat exchange region.

Based on the above scheme, this disclosure has following beneficial effect:

(1) through the first water conservancy diversion portion that is the quadrangle structure setting in the heat transfer district setting, increase the disturbance nature in flow field, and first water conservancy diversion portion includes first guiding gutter and the second guiding gutter of protruding opposite direction. When the plate is assembled, a flow channel for fluid circulation is formed, and the rigidity of the plate body is improved; meanwhile, compared with the corrugated type and the herringbone in the prior art, the quadrilateral structure further improves the turbulence degree of the fluid in the heat exchanger;

(2) at least two strip-shaped first guide grooves or second guide grooves are arranged to form each edge of the first guide part, the length of each edge of the first guide part is further increased, and the heat exchange area is increased;

(3) the inclined quadrilateral structure can further improve the turbulence degree, limit the flowing speed of the fluid and improve the heat exchange effect;

(4) the first flow guide parts are distributed in a plurality of rows and columns and are closely connected, so that the utilization efficiency of the whole heat exchange area is improved;

(5) the first side and the second side are arranged at the top and the bottom of the heat exchange area, the third step and the fourth side are arranged at two sides of the heat exchange area, and the second flow guide part is arranged around the whole first flow guide part, so that the path length of the fluid flow of the whole heat exchange area is further increased, the flow speed is reduced, and the heat exchange area is further increased;

(6) the third flow guide part is further arranged, so that when fluid flows to the second flow guide part and the first flow guide part to form a flow channel, a next-level turbulent flow is formed in the flow channel, and the heat exchange effect is further improved on the basis of the prior art;

(7) by arranging the flow splitting region, the fluid inlet and outlet are provided, so that the fluid enters and exits the heat exchange region in order.

Drawings

Fig. 1 is a schematic structural view of a plate body of a heat exchange plate according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram illustrating a heat exchange area of a heat exchange plate according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a heat exchange area of a heat exchange plate according to another embodiment of the present disclosure;

FIG. 4 is a schematic view of a heat exchange area providing heat exchange plates according to a further embodiment of the present disclosure;

FIG. 5 is a schematic view of a plurality of heat transfer zones for providing a heat transfer plate according to an embodiment of the present disclosure;

FIG. 6 shows an enlarged detail of FIG. 5;

FIG. 7 is a schematic top view of a portion of FIG. 5;

fig. 8 is a partial side view of fig. 5.

In the figure: 1. a sheet body; 2. a heat exchange zone; 3. a first flow guide part; 31. a first diversion trench; 32. a second diversion trench; 4. a flow channel; 5. a second flow guide part; 51. a first side; 52. a second edge; 53. a third side; 54. a fourth side; 6. a third flow guide part; 61. a third diversion trench; 62. a fourth diversion trench; 7. a shunting area.

Detailed Description

In order to make the objects, features and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In order to improve the turbulence and improve the heat exchange effect, as shown in fig. 1 to 7, an embodiment of the present disclosure provides a heat exchange plate of a plate heat exchanger, including a plate body 1, the plate body 1 includes a heat exchange region 2 and a flow splitting region 7, the flow splitting region 7 is disposed at upper and lower ends of the heat exchange region 2, the heat exchange region 2 is disposed in a rectangular structure, the flow splitting region 7 may be disposed in a triangular structure, but a specific structure is not limited here, and only a requirement that a fluid enters the heat exchange region 2 from the flow splitting region 7 or is output to the flow splitting region 7 from the heat exchange region 2 is satisfied. It should be understood that the functions herein are all fulfilled when the heat exchange plates are mounted after the plate heat exchanger through the pair groups.

As shown in fig. 1 and fig. 2, a plurality of first flow guide parts 3 arranged in a quadrilateral structure are arranged on the surface of the heat exchange area 2, each first flow guide part 3 comprises a first flow guide groove 31 and a second flow guide groove 32, which protrude in opposite directions, and the first flow guide grooves 31 and the second flow guide grooves 32 form four sides of the first flow guide part 3; on the same surface of the heat exchange area 2, since the protruding directions of the first guide grooves 31 and the second guide grooves 32 are opposite, it can be known that when the first guide grooves 31 are protruding with respect to one surface, the second guide grooves 32 are recessed; if first channels 31 are concave to one side, then second channels 32 are convex to that side.

When the sheet body 1 is assembled in pairs, the first guide grooves 31 and the second guide grooves 32 corresponding to the same group form a flow passage 4 for fluid to pass through; it can be known that, on the opposite surfaces of two sheet body 1, the first guiding groove 31 is convex, and the second guiding groove 32 is concave, so when two sheet body 1 are assembled, the corresponding first guiding groove 31 is attached to each other, and the corresponding second guiding groove 32 is far away from each other, forming the flow channel 4 for the fluid to flow through.

Preferably, first guide grooves 31 and second guide grooves 32 are both in a long strip shape.

Preferably, each side of the first flow guide part 3 includes at least two first flow guide grooves 31 or second flow guide grooves 32, and the protruding directions of the adjacent sides of the first flow guide part 3 are different. Therefore, the protruding directions of the two oppositely arranged sides of the first diversion part 3 should be the same.

Preferably, the bottom side of the first diversion part 3 is arranged obliquely with respect to the horizontal direction, the included angle between the bottom side of the first diversion part 3 and the horizontal direction is greater than or equal to 15 degrees, and the specific arrangement of the oblique angle should be adjusted according to the needs of practical application situations such as the length of the heat exchange zone 2 or fluid, for example, by detecting the turbulence degree inside the heat exchange zone 2 under the current structure.

The first diversion parts 3 are distributed on the heat exchange area 2 in the order of rows and columns, and adjacent first diversion parts 3 share adjacent sides. In the scheme, four sides of the first flow guide part 3 positioned in the heat exchange area are shared with four adjacent first flow guide parts 3 positioned in the vertical and horizontal directions, so that the first flow guide parts 3 of the heat exchange area 2 are closely arranged, and the space utilization rate is high.

As shown in fig. 3, preferably, the heat exchange area 2 further comprises a second diversion part 5, and the second diversion part 5 comprises a first side 51 at the top and a second side 52 at the bottom of the heat exchange area 2, and a third side 53 and a fourth side 54 at the left and right sides of the heat exchange area 2;

the first edge 51 and the second edge 52 are formed by a plurality of groups of first guide grooves 31 arranged at intervals, and each group of first guide grooves 31 at least comprises two first guide grooves; the third side 53 and the fourth side 54 are formed by a plurality of groups of second guide grooves 32 arranged at intervals, and each group of second guide grooves 32 comprises at least two.

Each set of first channels 31 of the first and

second sides

51 and 52 is parallel to a side of the first flow guide 3, and each set of second channels 32 of the third and

fourth sides

53 and 54 is parallel to a bottom side of the first flow guide.

Wherein, at least two first flow guiding grooves 31 of each group of the first edge 51 and the second edge 52 are parallel to the side edge of the first flow guiding part 3, and are also arranged obliquely relative to the horizontal direction, and the protruding direction of the at least two first flow guiding grooves 31 of each group is the same as that of the side edge of the first flow guiding part 3, and is opposite to that of the bottom edge of the second flow guiding part 5;

the at least two second guide grooves 32 of each of the third and

fourth sides

53 and 54 are parallel to the bottom side of the first guide part 3 and are also inclined with respect to the horizontal direction, and the at least two second guide grooves 32 of each of the groups have the same protruding direction as the bottom side of the first guide part 3 and the opposite protruding direction to the side of the second guide part 5.

As shown in fig. 4, preferably, the heat exchange area 2 further includes a plurality of third flow guiding portions 6, where the third flow guiding portions 6 include portions distributed inside the quadrilateral structure of the first flow guiding portion 3; further includes portions which are alternately disposed with each set of first guide grooves 31 of the first and

second sides

51 and 52 of the second guide 5, and each set of second guide grooves 32 of the third and

fourth sides

53 and 54 of the second guide 5.

The third diversion part 6 comprises a third diversion groove 61 and a fourth diversion groove 62 with opposite protruding directions, the third diversion groove 61 and the fourth diversion groove 62 form a quadrilateral structure of the third diversion part 6, and four sides of the third diversion part 6 and four sides of the first diversion part 3 are respectively arranged correspondingly and in parallel. It should be understood that the third flow guide 6 can also be regarded as a reduced version of the first flow guide 3, such as a uniform convex direction and an inclined angle, but the specific structure can be different.

As shown in fig. 5 and 6, the first guide groove 31, the second guide groove 32, the third guide groove 61 and the fourth guide groove 62 are preferably in a truncated cone-shaped convex structure.

As shown in fig. 7 and fig. 8, a top view structure and a side view structure of the three heat exchange plates in fig. 5 are shown in an installation state, wherein a pair of paired plate bodies 1 and an adjacent third plate body 1 are included, and the installation relationship between the plate bodies 1 and the formation of the flow channels 4 can be seen through the representation of the structure.

It should be understood that a sealing strip is also required when the heat exchange plate is assembled, so that the flow channel 4 for fluid circulation in the assembled heat exchange plate is in a sealed state, but the scheme is not limited thereto.

This scheme is through setting up first water conservancy diversion portion 3, second water conservancy diversion portion 5 and third water conservancy diversion portion 6, and coaction is in heat transfer area 2, greatly increased fluidic disturbance for even if the fluid can still present the turbulent flow state under lower velocity of flow, improve heat exchange efficiency.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The heat exchange plate of the plate heat exchanger is characterized by comprising a plate body (1), wherein the plate body (1) comprises a heat exchange area (2), a plurality of first flow guide parts (3) which are arranged in a quadrilateral structure are arranged on the surface of the heat exchange area (2), each first flow guide part (3) comprises a first flow guide groove (31) and a second flow guide groove (32) which are opposite in protruding direction, and the first flow guide grooves (31) and the second flow guide grooves (32) form four sides of the first flow guide parts (3); when the sheet body (1) is installed in a paired manner, the first guide grooves (31) and the second guide grooves (32) which correspond to each other in the same group form a flow channel (4) for fluid to pass through.

2. A heat exchanger plate of a plate heat exchanger according to claim 1, characterised in that the first guiding gutter (31) and the second guiding gutter (32) are both of an elongated configuration.

3. A heat exchanger plate of a plate heat exchanger according to claim 1, characterised in that each edge of the first flow guide (3) comprises at least two first flow channels (31) or second flow channels (32), and that the direction of protrusion of adjacent edges of the first flow guide (3) is different.

4. A heat exchanger plate of a plate heat exchanger according to any one of claims 1 to 3, wherein the bottom side of the first flow guiding portion (3) is arranged obliquely with respect to the horizontal direction, and the angle between the bottom side of the first flow guiding portion (3) and the horizontal direction is greater than or equal to 15 degrees.

5. A heat exchanger plate of a plate heat exchanger according to claim 4, characterised in that the first flow guiding portions (3) are distributed over the heat transfer area (2) in a row and column order, adjacent first flow guiding portions (3) sharing adjacent edges.

6. A heat exchanger plate of a plate heat exchanger according to any one of claims 1 to 3, wherein the heat transfer zone (2) further comprises a second flow guiding portion (5), the second flow guiding portion (5) comprising a first edge (51) and a second edge (52) at the top and at the bottom of the heat transfer zone (2) and a third edge (53) and a fourth edge (54) at the left and right sides of the heat transfer zone (2);

the first edge (51) and the second edge (52) are formed by a plurality of groups of first guide grooves (31) which are arranged at intervals, and each group of the first guide grooves (31) comprises at least two; the third side (53) and the fourth side (54) are formed by a plurality of groups of second guide grooves (32) which are arranged at intervals, and each group of second guide grooves (32) at least comprises two.

7. A heat exchanger plate of a plate heat exchanger according to claim 6, wherein each group of the first flow channels (31) of the first and second edges (51, 52) is parallel to a side edge of the first flow guides (3), and each group of the second flow channels (32) of the third and fourth edges (53, 54) is parallel to a bottom edge of the first flow guides (3).

8. A heat exchanger plate of a plate heat exchanger according to claim 7, wherein the heat transfer zone (2) further comprises a third flow guiding portion (6), the third flow guiding portion (6) being partly distributed inside the quadrilateral configuration of the first flow guiding portion (3); the third guide part (6) is further staggered with each group of the first side (51) and the second side (52) of the second guide part (5) of the first guide groove (31), and is staggered with each group of the third side (53) and the fourth side (54) of the second guide part (5) of the second guide groove (32).

9. A heat exchanger plate of a plate heat exchanger according to claim 8, wherein the third flow guiding portion (6) comprises a third flow guiding groove (61) and a fourth flow guiding groove (62) with opposite convex directions, the third flow guiding groove (61) and the fourth flow guiding groove (62) form a quadrilateral structure of the third flow guiding portion (6), and four sides of the third flow guiding portion (6) correspond to and are arranged in parallel with four sides of the first flow guiding portion (3), respectively.

10. A heat exchanger plate of a plate heat exchanger according to claim 9, wherein the plate sheet body (1) further comprises a flow dividing zone (7), the flow dividing zone (7) being arranged at both the upper and lower ends of the heat exchange zone (2).