Heat exchange plate and heat exchange unit
By setting V-shaped stripes and inclined side plate structures in the plate heat exchanger to form a staggered flow channel, and through the design of bosses and recesses, the problem of poor heat exchange caused by low-speed fluid laminar flow is solved, and efficient heat transfer and improved flow channel rigidity are achieved.
Patent Information
- Application Number
- CN202010795974.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-08-10
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2040-08-10
AI Technical Summary
When the metal plates of existing plate heat exchangers exchange heat, low-speed fluids are prone to laminar flow, resulting in poor heat exchange effects, and the traditional fixing method affects the heat transfer efficiency.
V-shaped stripes and inclined side panels are set on the plate body to form a staggered flow channel, and the corresponding design of bosses and recesses increases the connection reliability and rigidity. It is made of stainless steel plate stamping.
It improves the turbulence efficiency of the fluid at low speed, enhances the heat exchange effect, and increases the heat transfer efficiency by 20%, reduces the fluid pressure loss to 10%, enhances the rigidity and avoids deformation.
Smart Images
Figure CN111998717B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of heat exchange equipment, and in particular to a heat exchange plate and a heat exchange unit. Background Art
[0002] A plate heat exchanger is a high-efficiency heat exchanger made up of a series of stacked metal plates with a certain corrugated shape. Thin rectangular channels are formed between each metal plate, through which heat exchange is carried out. Its function is to transfer the heat of one fluid to another fluid. When the metal plates of existing plate heat exchangers exchange heat, low-speed fluids often flow in a laminar manner between the metal plates, resulting in poor heat exchange effect. In addition, the metal plates of existing plate heat exchangers are either not connected by any fixings or connected by traditional distance columns. When the metal plates are not connected by any fixings, they are prone to deformation if they are thin, and the heat transfer efficiency is affected if the metal plates are thick. The heat transfer efficiency is also reduced when traditional distance columns are used for connection. Summary of the Invention
[0003] In order to overcome the deficiencies of the prior art, one of the objects of the present invention is to provide a heat exchange plate, and a second object of the present invention is to provide a heat exchange unit that can improve heat transfer efficiency and ensure heat exchange effect.
[0004] One of the purposes of the present invention is achieved by the following technical solution:
[0005] A heat exchange plate comprises: a plate body, a first side plate extending outward on two opposite sides of the plate body, and a second side plate extending outward on the other two opposite sides of the plate body; the first side plate is inclined toward the first surface of the plate body, the second side plate is inclined toward the second surface of the plate body, and the plate body is provided with V-shaped stripes.
[0006] Furthermore, the V-shaped stripes include a plurality of V-shaped protrusions and V-shaped grooves arranged along the same direction, and the V-shaped protrusions and V-shaped grooves are alternately arranged.
[0007] Furthermore, the V-shaped protrusion and the V-shaped groove are suitable for being integrally stamped on the plate body.
[0008] Furthermore, a plurality of bosses and recesses are provided on both the first and second surfaces of the plate body, and the bosses on the first surface of the plate body correspond to the recesses on the second surface, and the recesses on the first surface of the plate body correspond to the bosses on the second surface.
[0009] Furthermore, the boss and the recess are both truncated cone-shaped.
[0010] Furthermore, the boss and the recess are adapted to be integrally stamped on the plate.
[0011] The second object of the present invention is achieved by adopting the following technical solution:
[0012] A heat exchange unit comprises: at least three heat exchange plates arranged in parallel, and any two adjacent heat exchange plates are arranged in a mirror image, the first side plates of the two adjacent heat exchange plates are connected to each other or the second side plates are connected to each other; the first side plates of the two adjacent heat exchange plates are connected to each other to form a first flow channel along the length direction of the first side plates between the two heat exchange plates, and the second side plates of the two adjacent heat exchange plates are connected to each other to form a second flow channel along the length direction of the second side plates between the two heat exchange plates; the opposite bosses on the two heat exchange plates connected to each other by the second side plates are welded and fixed.
[0013] Furthermore, the heat exchange plate is stamped from a stainless steel plate, and the thickness of the heat exchange plate is less than 0.6 mm.
[0014] Furthermore, a first welding plate parallel to the plate body is provided on the first side plate, and a second welding plate parallel to the plate body is provided on the second side plate; the first welding plates of two adjacent heat exchange plates are welded to each other or the second welding plates are welded to each other.
[0015] Furthermore, both ends of the first side plate in the length direction extend to be flush with the side of the second welding plate away from the plate body, and a connecting plate is connected between the first side plate, the second side plate and the second welding plate; the second flow channel includes a top opening and an end opening, the top opening is surrounded by the first welding plates of the two heat exchange plates forming the second flow channel, and the end opening is surrounded by the connecting plate, the first side plate and the first welding plate of the two heat exchange plates forming the second flow channel, and the end opening is suitable for being sealed by a steel plate adapted to the shape of the end opening.
[0016] Compared with the prior art, the beneficial effect of the present invention is that: the plate body of the heat exchange plate is provided with V-shaped stripes. When the fluid passes through the surface of the plate body, due to the interference of the V-shaped stripes, the fluid can also generate turbulence at a lower flow rate, thereby improving the efficiency of heat exchange and further improving the heat exchange effect. In addition, since a first side plate and a second side plate are provided on the plate body, and the first side plate and the second side plate are respectively inclined in different directions, when the first side plates of two adjacent heat exchange plates are connected to each other, a first flow channel along the length direction of the first side plate can be formed between the two heat exchange plates. When the second side plates of two adjacent heat exchange plates are connected to each other, a second flow channel along the length direction of the second side plate can be formed between the two heat exchange plates. The first flow channel and the second flow channel are intertwined with each other, so that two different fluids can be well provided for heat exchange. The relative bosses on the two heat exchange plates connected to each other by the second side plate are welded and fixed. In this way, the overall rigidity of the heat exchange unit can be improved, making it less likely to deform. The bosses on the first surface of the plate body correspond to the recesses on the second surface, and the recesses on the first surface of the plate body correspond to the bosses on the second surface. Therefore, the places where the first flow channel and the second flow channel are occupied by the bosses can be compensated by the recesses accordingly. In this way, the pressure loss of the fluid when passing through the first flow channel and the second flow channel is only 10% of that of the transmission distance column, and the heat transfer efficiency can be increased by 20%. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A three-dimensional diagram of the heat exchange plate of the present invention;
[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0019] Figure 3 This is a schematic diagram of the cross section of the V-shaped stripes in the present invention;
[0020] Figure 4 A three-dimensional diagram showing the second side plates of two heat exchange plates being connected to each other;
[0021] Figure 5 for Figure 4 a schematic diagram along the length direction of the first side panel;
[0022] Figure 6 is a schematic diagram of a heat exchange unit;
[0023] Figure 7 Schematic diagram of a steel plate fitted with an end opening.
[0024] In the figure: 1. Plate body; 11. First side plate; 12. Second side plate; 13. V-shaped stripe; 131. V-shaped protrusion; 132. V-shaped groove; 14. Boss; 15. Recess; 16. First welding plate; 17. Second welding plate; 18. Connecting plate; 2. First flow channel; 3. Second flow channel; 31. Top opening; 32. End opening; 4. Steel plate. DETAILED DESCRIPTION
[0025] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.
[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0028] like Figure 1-3 The figure shows a heat exchange plate provided by an embodiment of the present invention, which comprises at least a plate body 1, first side plates 11 extending outward from two opposite sides of the plate body 1, and second side plates 12 extending outward from two other opposite sides of the plate body 1. The first side plates 11 are inclined toward the first surface of the plate body 1, and the second side plates 12 are inclined toward the second surface of the plate body 1. V-shaped stripes 13 are provided on the plate body 1. That is, the first side plates 11 and the second side plates 12 are inclined in opposite directions.
[0029] In the above-mentioned arrangement, the plate body 1 of the heat exchange plate is provided with V-shaped stripes 13. When the fluid passes through the surface of the plate body 1, due to the interference of the V-shaped stripes 13, the fluid can also generate turbulence at a lower flow rate, thereby improving the efficiency of heat exchange and further enhancing the heat exchange effect. In addition, referring to Figure 6Since the plate body 1 is provided with a first side plate 11 and a second side plate 12, and the first side plate 11 and the second side plate 12 are inclined in different directions, when the first side plates 11 of two adjacent heat exchange plates are connected to each other, a first flow channel 2 along the length direction of the first side plate 11 can be formed between the two heat exchange plates. When the second side plates 12 of two adjacent heat exchange plates are connected to each other, a second flow channel 3 along the length direction of the second side plate 12 can be formed between the two heat exchange plates. The first flow channel 2 and the second flow channel 3 are staggered with each other, so that two different fluids can be well provided for heat exchange.
[0030] As a preferred embodiment, refer to Figure 3 The V-shaped stripes 13 include a plurality of V-shaped protrusions 131 and V-shaped grooves 132 arranged in the same direction, and the V-shaped protrusions 131 and V-shaped grooves 132 are arranged alternately. That is, the V-shaped stripes 13 in the present invention are composed of V-shaped protrusions 131 and V-shaped grooves 132 arranged alternately. Specifically, the V-shaped protrusions 131 and V-shaped grooves 132 are suitable for integrally stamping on the plate body 1. Forming the V-shaped protrusions 131 and V-shaped grooves 132 by integral stamping is very convenient and saves material because no new components are added to the plate body 1.
[0031] Preferably, refer to Figure 1 as well as Figure 6 The first and second surfaces of the plate body 1 are both provided with a plurality of bosses 14 and recesses 15. The bosses 14 on the first surface of the plate body 1 correspond to the recesses 15 on the second surface, and the recesses 15 on the first surface of the plate body 1 correspond to the bosses 14 on the second surface. This arrangement facilitates the connection between the plates 1, that is, the plates 1 can be welded and fixed to each other via the bosses 14, thereby increasing the reliability of the connection between the heat exchange plates and making them less prone to deformation. Furthermore, since the bosses 14 on the first surface of the plate body 1 correspond to the recesses 15 on the second surface, and the recesses 15 on the first surface of the plate body 1 correspond to the bosses 14 on the second surface, the areas occupied by the bosses in the first flow channel 2 and the second flow channel 3 can be compensated by the recesses 15 accordingly. In this way, the pressure loss of the fluid when passing through the first flow channel 2 and the second flow channel 3 is only 10% of that of the transmission distance column, and the heat transfer efficiency can be increased by 20%.
[0032] Preferably, the boss 14 and the recess 15 are both truncated cone-shaped. The truncated cone shape can further reduce the obstruction to the fluid in the first flow channel 2 and the second flow channel 3, thereby further ensuring the heat transfer efficiency.
[0033] Preferably, the boss 14 and the recess 15 are suitable for being integrally stamped on the plate body 1. Similarly, integrally stamping the boss 14 and the recess 15 is very convenient, and since no new components need to be added to the plate body 1, material is also saved.
[0034] A heat exchange unit, referring to Figure 1-3 as well as Figure 6 , including at least three heat exchange plates arranged in parallel, the heat exchange plates including a plate body 1, a first side plate 11 extending outward on two opposite sides of the plate body 1, and a second side plate 12 extending outward on the other two opposite sides of the plate body 1; the first side plate 11 is inclined toward the first surface of the plate body 1, and the second side plate 12 is inclined toward the second surface of the plate body 1, V-shaped stripes 13 are provided on the plate body 1, and a plurality of bosses 14 and recesses 15 are provided on the first and second surfaces of the plate body 1, and the bosses 14 on the first surface of the plate body 1 correspond to the recesses 15 on the second surface, and the recesses 15 on the first surface of the plate body 1 correspond to the bosses 14 on the second surface. Any two adjacent heat exchange plates are arranged in a mirror image, with the first side plates 11 of the two adjacent heat exchange plates connected to each other or the second side plates 12 connected to each other; that is, the multiple heat exchange plates are arranged alternately in a manner such that the first side plates 11 are connected to each other and the second side plates 12 are connected to each other. For better textual description, the number of heat exchange plates is now explained as 4, and the heat exchange plates are numbered 1-4 from left to right. Heat exchange plate No. 1 is connected to the first side plate 11 of heat exchange plate No. 2, heat exchange plate No. 2 is connected to the second side plate 12 of heat exchange plate No. 3, and heat exchange plate No. 3 is connected to the first side plate 11 of heat exchange plate No. 4. The first side plates 11 of the two adjacent heat exchange plates are connected to each other to form a first flow channel 2 along the length direction of the first side plate 11 between the two heat exchange plates, and the second side plates 12 of the two adjacent heat exchange plates are connected to each other to form a second flow channel 3 along the length direction of the second side plate 12 between the two heat exchange plates; the opposing bosses 14 on the two heat exchange plates connected to each other by the second side plates 12 are welded and fixed.
[0035] In the above-mentioned heat exchange unit, the relative bosses 14 on the two heat exchange plates connected to each other by the second side plate 12 are welded and fixed. In this way, the overall rigidity of the heat exchange unit can be improved, making it less likely to deform, and the bosses 14 on the first surface of the plate body 1 correspond to the recesses 15 on the second surface, and the recesses 15 on the first surface of the plate body 1 correspond to the bosses 14 on the second surface, so the places where the first flow channel 2 and the second flow channel 3 are occupied by the bosses can be compensated by the recesses 15 accordingly. In this way, the pressure loss of the fluid when passing through the first flow channel 2 and the second flow channel 3 is only 10% of that of the transmission distance column, and the heat transfer efficiency can be increased by 20%.
[0036] Preferably, the heat exchange plate is stamped from stainless steel plate 4 and has a thickness of less than 0.6 mm. Because the aforementioned configuration improves the overall rigidity of the heat exchange unit, the heat exchange plate can be made thinner. As we know, the thinner the heat exchange plate, the better the heat exchange effect. In actual use, the thickness should be selected based on a balance between heat exchange effect and rigidity.
[0037] Preferably, refer to Figure 4-6The first side plate 11 is provided with a first welding plate 16 parallel to the plate body 1, and the second side plate 12 is provided with a second welding plate 17 parallel to the plate body 1. The first welding plates 16 of two adjacent heat exchange plates are welded to each other, or the second welding plates 17 are welded to each other. Specifically, laser welding can be used. This arrangement not only facilitates welding, but also avoids damage caused by direct machining of the first and second side plates 11, 12. This ensures a tight seal when the first and second side plates 11, 12 are connected, preventing fluid leakage from the connection.
[0038] Preferably, refer to Figure 6-7 The two ends of the first side plate 11 in the longitudinal direction extend to be flush with the side of the second welding plate 17 away from the plate body 1. A connecting plate 18 is connected between the first side plate 11, the second side plate 12 and the second welding plate 17. The second flow channel 3 includes a top opening 31 and an end opening 32. The top opening 31 is surrounded by the first welding plates 16 of the two heat exchange plates forming the second flow channel 3. The end opening 32 is surrounded by the connecting plate 18, the first side plate 11 and the first welding plate 16 of the two heat exchange plates forming the second flow channel 3. The end opening 32 is suitable for being blocked by a steel plate 4 that is adapted to the shape of the end opening 32. Blocking the end opening 32 by the steel plate 4 can effectively prevent unnecessary mixing of the two fluids that need to exchange heat. Specifically, the steel plate 4 can be serrated to block the end opening 32, and the serrated steel plate 4 can be formed by laser cutting.
[0039] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A heat exchange plate, characterized in that: include: a plate body, first side panels extending outwardly from two opposite sides of the plate body, and second side panels extending outwardly from two other opposite sides of the plate body; the first side panels are inclined toward the first surface of the plate body, the second side panels are inclined toward the second surface of the plate body, and the plate body is provided with V-shaped stripes; The V-shaped stripes include a plurality of V-shaped protrusions and V-shaped grooves arranged in the same direction, and the V-shaped protrusions and V-shaped grooves are arranged alternately; The first and second surfaces of the plate are both provided with a plurality of bosses and recesses, and the bosses on the first surface of the plate correspond to the recesses on the second surface, and the recesses on the first surface of the plate correspond to the bosses on the second surface; The boss and the recess are both truncated cone-shaped; The thickness of the heat exchange plate is less than 0.6 mm; When at least three heat exchange plates are arranged in parallel, any two adjacent heat exchange plates are arranged in a mirror image; The boss and the recess are adapted to be integrally punched on the plate.
2. The heat exchange plate according to claim 1, wherein: The V-shaped protrusion and the V-shaped groove are suitable for being integrally punched on the plate body.
3. A heat exchange unit, characterized in that: include: At least two heat exchange plates according to any one of claims 1 to 2 are arranged in parallel, and any two adjacent heat exchange plates are arranged in a mirror image, the first side plates of the two adjacent heat exchange plates are connected to each other or the second side plates are connected to each other; the first side plates of the two adjacent heat exchange plates are connected to each other to form a first flow channel along the length direction of the first side plates between the two heat exchange plates, and the second side plates of the two adjacent heat exchange plates are connected to each other to form a second flow channel along the length direction of the second side plates between the two heat exchange plates; The second side plate is welded and fixed between the opposite bosses on the two heat exchange plates connected to each other; The areas of the first and second flow channels occupied by the bosses are compensated by corresponding recesses; A first welding plate parallel to the plate body is provided on the first side plate, and a second welding plate parallel to the plate body is provided on the second side plate; the first welding plates of two adjacent heat exchange plates are welded to each other or the second welding plates are welded to each other; The two ends of the first side plate in the length direction respectively extend to be flush with the side of the second welding plate away from the plate body, and a connecting plate is connected between the first side plate, the second side plate and the second welding plate; the second flow channel includes a top opening and an end opening, the top opening is surrounded by the first welding plates of the two heat exchange plates forming the second flow channel, and the end opening is surrounded by the connecting plate of the two heat exchange plates forming the second flow channel, the first side plate and the first welding plate, and the end opening is suitable for being sealed by a steel plate adapted to the shape of the end opening.
4. The heat exchange unit according to claim 3, wherein: The heat exchange plate is formed by stamping a stainless steel plate.
Citation Information
Patent Citations
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CN105547020A
Heat exchange plate and heat exchange unit
CN212645476U