Plate heat exchanger, plate structure thereof and vehicle
The innovative plate design for U-type heat exchangers addresses uneven fluid distribution and dead zones by using edge-flanged plates with separators and turbulence promoters, enhancing heat transfer efficiency and product reliability.
Patent Information
- Application Number
- CN202421996693.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-08-16
AI Technical Summary
In the existing U-shaped plate plate heat exchangers, the heat exchange fluid is prone to produce uneven distribution and small flow dead zones at the turn of both sides of the U-shaped flow path, which affects the heat exchange efficiency, and is more obvious, especially when the plate width is larger.
A plate heat exchanger plate structure is designed, including edge flanges, end convex ribs and intermediate convex ribs. By forming an end flow channel when adjacent plates are overlapped, it connects the turning points on both sides of the U-shaped flow channel, and a spoiler hull is provided in the flow channel to equalize the fluid flow.
It effectively avoids the formation of flow dead zones in the U-shaped runner, improves heat exchange performance, and reduces the material thinning rate at the intermediate convex ribs, and improves the pressure resistance and pass rate of the product.
Smart Images
Figure CN223106754U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plate heat exchangers, in particular to a plate structure of a plate heat exchanger. The utility model also relates to a plate heat exchanger adopting the plate structure of the plate heat exchanger, and a vehicle provided with the plate heat exchanger. Background Technique
[0002] A plate heat exchanger is a heat exchange component formed by stacking and welding multiple plates. Chambers for heat exchange fluids to flow through are formed between adjacent plates, and openings for heat exchange fluids to enter and exit the chambers are provided on each plate.
[0003] Currently, according to the flow direction of heat exchange fluids in the plate heat exchanger, the plate forms of the plate heat exchanger mainly include two types: I-type and U-type. Among them, a dividing section that divides the plate into two regions is provided in the middle of the U-type plate. In this way, a U-shaped flow path located between the inlet and the outlet can be formed in the chamber, so that the flow path of the heat exchange fluid is lengthened and the flow velocity is increased, which helps to improve the heat exchange efficiency.
[0004] However, in the existing plate heat exchanger adopting U-type plates, when the heat exchange fluid flows in the U-shaped flow path in the chamber, uneven distribution of the heat exchange fluid is likely to occur at the turning points on both sides of the U-shaped flow path, and there are problems that the flow velocity is large near the middle position of the plate and the flow velocity is small near the side position of the plate. As a result, "flow dead zones" with a small flow velocity and insufficient heat exchange are likely to be formed at the turning points on both sides. The existence of the above-mentioned "flow dead zones" will have a greater impact on the heat exchange efficiency of the plate heat exchanger, and the more obvious this phenomenon is when the plate width is larger, which is not conducive to improving the heat exchange performance of the plate heat exchanger. Summary of the Utility Model
[0005] In view of this, the utility model aims to propose a plate structure of a plate heat exchanger to help improve the heat exchange performance of the plate heat exchanger.
[0006] To achieve the above object, the technical solution of the utility model is realized as follows:
[0007] A plate structure of a plate heat exchanger includes a plate body with flanges at the edges;
[0008] A partitioning portion protruding to one side is provided on the plate body. The partitioning portion includes an end rib located at one end of the plate body and an intermediate rib with one end connected to the end rib, and the other end of the intermediate rib does not extend to the end of the plate body;
[0009] When two adjacent plate body parts are superposed together after rotating 180° relative to each other around the vertical axis, the middle convex rib is used to separate a U-shaped flow channel between the two plate body parts, and the end convex rib forms an end flow channel between the two plate body parts. The end flow channel connects the turning parts on both sides of the U-shaped flow channel.
[0010] Further, the end convex rib and the plane position on the adjacent plate body part enclose and form the end flow channel.
[0011] Further, along the vertical axis direction of the plate body part, the end flow channel is located outside the inlet and outlet openings on the plate body part.
[0012] Further, along the vertical axis direction of the plate body part, neither the inlet position nor the outlet position of the end flow channel enters the inner side of the inlet and outlet openings on the plate body part.
[0013] Further, the middle convex rib is offset to one side of the vertical axis of the plate body part, and the middle convex rib is attached to the plane position on the adjacent plate body part.
[0014] Further, the plate body part is provided with a flow disturbing convex bulge protruding to one side. The flow disturbing convex bulge is located in the U-shaped flow channel and is multiple and distributed at intervals in the U-shaped flow channel.
[0015] Further, in the thickness direction of the plate body part, the protruding height of the flow disturbing convex bulge is not greater than the protruding height of the middle convex rib.
[0016] Further, viewed from the thickness direction of the plate body part, the flow disturbing convex bulge is in a water droplet shape; and / or, along the protruding direction, the cross section of the flow disturbing convex bulge is gradually reduced.
[0017] Compared with the prior art, the utility model has the following advantages:
[0018] For the plate heat exchanger plate sheet structure of the utility model, through the setting of the end convex rib in the partition part, when adjacent plate body parts are superposed, the end convex rib can form an end flow channel that connects the turning parts on both sides of the U-shaped flow channel between the two plate body parts. Thus, the formed end flow channel can be used to increase the flow rate of the heat exchange fluid at the turning parts on both sides of the U-shaped flow channel, and further help to avoid the formation of a flow dead zone with insufficient heat exchange in the U-shaped flow channel, so as to achieve the effect of facilitating the improvement of the heat exchange performance of the plate heat exchanger.
[0019] Another object of the utility model is to provide a plate heat exchanger, in which a plurality of the above-mentioned plate heat exchanger plate sheet structures are provided, and adjacent two plate body parts are superposed together after rotating 180° relative to each other around the vertical axis.
[0020] In addition, the present utility model also provides a vehicle, in which the plate heat exchanger as described above is provided.
[0021] The vehicle and the plate heat exchanger of the present utility model have the same beneficial effects as the plate structure of the above-mentioned plate heat exchanger, and will not be elaborated herein. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The accompanying drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:
[0023] Figure 1 is a schematic diagram of the plate structure according to an embodiment of the present utility model;
[0024] Figure 2 is Figure 1 a schematic diagram of the structure shown from another perspective;
[0025] Figure 3 is a schematic diagram when a plurality of plate structures are stacked together;
[0026] Figure 4 is Figure 3 a top view of the structure shown;
[0027] Figure 5 is Figure 4 a sectional view taken at the A-A position in ;
[0028] Figure 6 is Figure 4 a sectional view taken at the B-B position in ;
[0029] Figure 7 is Figure 5 a partial enlarged view of the C position in ;
[0030] Figure 8 is Figure 6 a partial enlarged view of the D position in ;
[0031] Figure 9 is a schematic diagram of the U-shaped flow channel and the end flow channel according to an embodiment of the present utility model;
[0032] DESCRIPTION OF THE REFERENCE NUMERALS:
[0033] 1, plate body; 2, partition part;
[0034] 101, flanging; 102, inlet and outlet opening; 103, turbulence convex hull; 201, end rib; 202, intermediate rib;
[0035] 10, U-shaped flow channel; 20, end flow channel;
[0036] O, the vertical axis of the plate body; S, the flow dead zone; z, the distance between the intermediate rib and the vertical axis of the plate body. Specific embodiments
[0037] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.
[0038] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are proposed to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, the detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.
[0039] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationships such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, if terms such as "first" and "second" appear, they are also only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0040] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.
[0041] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.
[0042] Embodiment 1
[0043] This embodiment relates to a plate structure of a plate heat exchanger. In the overall design, in combination with Figures 1 to 5 , and Figure 7 and Figure 9 as shown in
[0044] Among them, a partition portion 2 protruding to one side is provided on the plate body 1. The partition portion 2 includes an end rib 201 located at one end of the plate body 1 and an intermediate rib 202 with one end connected to the end rib 201, and the other end of the intermediate rib 202 does not extend to the end of the plate body 1.
[0045] In addition, when two adjacent plate bodies 1 are superposed together by rotating 180° relative to each other about the vertical axis O, the above-mentioned intermediate rib 202 is used to separate a U-shaped flow channel 10 between the two plate bodies 1, and the end rib 201 forms an end flow channel 20 between the two plate bodies 1, and the end flow channel 20 communicates the turning parts on both sides of the U-shaped flow channel 10.
[0046] At this time, with the above settings, through the setting of the end rib 201 in the partition portion 2, and when the adjacent plate bodies 1 are superposed, the end rib 201 can form an end flow channel 20 that communicates the turning parts on both sides of the U-shaped flow channel 10 between the two plate bodies 1. In this way, in this embodiment, the formed end flow channel 20 can be utilized to increase the flow rate of the heat exchange fluid at the turning parts on both sides of the U-shaped flow channel 10, that is, at the position of the flow dead zone S where the heat exchange fluid flow rate is small and the heat exchange is insufficient in the plate heat exchanger. This helps to avoid the formation of a flow dead zone S with insufficient heat exchange in the U-shaped flow channel 10 and is beneficial to improving the heat exchange performance of the plate heat exchanger.
[0047] Based on the above overall introduction, specifically, similar to the plate structure in the existing plate heat exchanger, the plate body 1 of this embodiment is generally also formed by stamping to form a flanging 101 arranged along the edge and a partition portion 2 including an end rib 201 and an intermediate rib 202 and other structures on it.
[0048] In addition, in specific implementation, the partition portion 2 including the end rib 201 and the intermediate rib 202 as a whole also has a "T" - shaped structure. Of course, it should be noted that, as shown in Figures 1 to 4 here, the partition portion 2 having a "T" - shaped structure means that although bending sections bent toward the side where the intermediate rib 202 is located are respectively provided at both ends of the end rib 201, the lengths of the bending sections at both ends of the end rib 201 are small, so that the partition portion 2 generally resembles a "T" - shaped structure as a whole.
[0049] In this embodiment, as a preferred implementation form, when the adjacent plate bodies 1 are superposed, the above-mentioned end rib 201 can, for example, enclose and form an end flow channel 20 with the plane position on the adjacent plate body 1. Among them, it should be noted that the plane position on the plate body 1, that is, the position on the plate body 1 having a flat surface and no protruding structure protruding into the end flow channel 20.
[0050] By making the end rib 201 and the plane position on the adjacent plate body 1 jointly enclose to form the end flow channel 20, it can be understood that it can ensure that there is no blocking structure in the end flow 20 that blocks the flow of the heat exchange fluid (such as the protruding structure protruding into the end flow channel 20 can block the flow of the heat exchange fluid). In this way, the heat exchange fluid can flow quickly in the end flow channel 20, and its flow rate may not even decay, and it can further increase the flow rate of the heat exchange fluid at the flow dead zone S, so as to better eliminate the flow dead zone S in the U-shaped flow channel 10 and improve the heat exchange efficiency of the plate heat exchanger.
[0051] In this embodiment, as a preferred implementation form, still in combination with Figure 9 As shown in, along the vertical axis O direction of the plate body 1, the above-mentioned end flow channel 20 is located outside the inlet and outlet openings 102 on the plate body 1.
[0052] At this time, the inlet and outlet openings 102 on the plate body 1 are used to form heat exchange fluid inlets and outlets communicating with the chambers (mainly the U-shaped flow channel 10 part) between adjacent plate bodies 1 after multiple plate bodies 1 are stacked. Generally, they are also formed by stamping during the preparation of the plate body 1. And the shape of the inlet and outlet openings 102 can be other shapes in addition to the circular shape shown in each figure, and it is not limited thereto. In specific implementation, for the design of the connection between the above-mentioned inlet and outlet openings 102 and the chambers between adjacent plate bodies 1, the relevant structures in the existing plate heat exchangers can be referred to.
[0053] By making the end flow channel 20 located outside the inlet and outlet openings 102 on the plate body 1, it can be understood that on the one hand, it can utilize the fact that this position on the plate body 1 is usually a flat structure and generally no protruding structure is formed, which is beneficial to realizing the joint enclosure of the end rib 201 and the plane position on the adjacent plate body 1 to form the end flow channel 20. On the other hand, since the end flow channel 20 is located outside the inlet and outlet openings 102, when adjacent plate bodies 1 are stacked, the flanges 101 at the edges will be connected together, which helps to form the end flow channel 20 and is beneficial to the sealing of the end flow channel 20 position.
[0054] Of course, by making the end flow channel 20 located outside the inlet and outlet openings 102 on the plate body 1, that is, making the end rib 201 in the partition part 2 close to the end of the plate body 1, it can also improve the structural strength of the plate body 1 and the end position of the plate heat exchanger formed by stacking.
[0055] On the basis of setting the end flow channel 20 outside the inlet and outlet openings 102, as a preferred implementation form, still referring to Figure 9As shown, also along the vertical axis O of the plate body 1, in this embodiment, it is also possible to ensure that neither the inlet position nor the outlet position of the above-mentioned end flow channel 20 enters the inner side of the inlet and outlet openings 102 on the plate body 1.
[0056] By ensuring that neither the inlet position nor the outlet position of the end flow channel 20 enters the inner side of the inlet and outlet openings 102, in other words, by ensuring that the inlet and outlet positions of the end flow channel 20 do not exceed the positions of the inlet and outlet openings 102. In this way, this embodiment can reduce the forming difficulty at both ends of the end rib 201, and at the same time enable the heat exchange fluid at the positions of the two-side heat exchange dead zones S to flow better into the end flow channel 20 and flow out of the end flow channel 20 into the heat exchange dead zones S, thereby further increasing the flow rate of the heat exchange fluid at the positions of the heat exchange dead zones S and improving the heat exchange performance of the plate heat exchanger.
[0057] In this embodiment, Figure 4 , and in combination with Figure 6 and Figure 8 As shown, as a preferred implementation form, on the plate body 1, the intermediate rib 202 can be offset to one side of the vertical axis O of the plate body 1, and there is a certain distance z from the vertical axis O of the plate body 1. At the same time, on the basis of the offset setting of the intermediate rib 202 relative to the vertical axis O of the plate body 1, further, the intermediate rib 202 is also made to fit with the flat surface position on the adjacent plate body 1 to form a U-shaped channel 10 separated by the intermediate rib 202 in the chamber between the adjacent plate bodies 1.
[0058] Wherein, the flat surface position on the plate body 1 here also refers to the position on the plate body 1 with a flat surface and no protruding structure (such as the following flow-around convex hull 103) protruding into the U-shaped flow channel 10. During specific implementation, the above distance z can be determined according to the structural design of the plate body 1, as long as it can ensure that when the adjacent plate bodies 1 are stacked, the intermediate rib 202 can fit with the flat surface position on the adjacent plate body 1 and can reliably separate the U-shaped flow channel 10 without bypass leakage occurring at the separation position of the intermediate rib 202.
[0059] In addition, it is worth noting that in existing plate heat exchangers, the sealing method of the intermediate separation section (i.e., the intermediate rib 202 in this embodiment) on the plate is usually the method of side fitting and welding. When using this method, since side welding is required, the height of the intermediate separation section is often relatively high, which will cause a large reduction rate of the plate material at the position of the intermediate separation section, and even cause cracking, easily resulting in low pressure resistance of the plate heat exchanger product and easy leakage failure, thus reducing the qualification rate of the plate heat exchanger product.
[0060] In this embodiment, by offsetting the middle rib 202 to one side of the vertical axis O of the plate body 1, and when adjacent plate bodies 1 are stacked, the top of the middle rib 202 is made to fit the plane position on the adjacent plate body 1. In this way, since the side welding method is no longer adopted, but the top of the middle rib 202 is welded after fitting the plane position on the adjacent plate body 1, it can effectively reduce the protruding height of the middle rib 202, so as to greatly reduce the material thinning rate at the position of the middle rib 201 on the plate body 1, which is beneficial to ensuring the pressure resistance of the plate heat exchanger product, helping to avoid leakage failure, and achieving the effect of improving the qualified rate of the plate heat exchanger product.
[0061] In this embodiment, as a preferred implementation form, still as Figures 1 to 4 shown, on the plate body 1, there are also spoiler convex hulls 103 protruding to one side, and the spoiler convex hulls 103 are located in the U-shaped flow channel 10 and are multiple and spaced apart in the U-shaped flow channel 10.
[0062] At this time, by setting the above-mentioned flow-around convex hulls 103, the flow-around effect of the flow-around convex hulls 103 can be utilized to make the heat exchange fluid flow rate, flow velocity, etc. at various parts in the U-shaped flow channel 10 more balanced, which is also beneficial to improving the heat exchange efficiency of the plate heat exchanger.
[0063] It should be noted that in specific implementation, for the sake of simplifying the structure of the plate body 1, facilitating the stacking of multiple plate bodies 1 to form a plate heat exchanger, and also for ensuring the flow rate of the heat exchange fluid, in the thickness direction of the plate body 1, the protruding height of the spoiler convex hull 103 can generally be set to not be greater than the protruding height of the middle rib 202. And the specific protruding height of the spoiler convex hull 103 can be selected and adjusted based on the flow rate design of the plate heat exchanger and the simulation situation during the design of the plate heat exchanger, etc.
[0064] In addition, in terms of structure, as a preferred implementation form, from the thickness direction of the plate body 1, the above-mentioned spoiler convex hull 103 can be set to be in a water droplet shape, for example, to have a better flow-around effect. At the same time, along the protruding direction, the cross-section of the above-mentioned spoiler convex hull 103 can also be set to gradually decrease, so as to better ensure the heat exchange flow rate of the plate heat exchanger.
[0065] Of course, in addition to being able to be in a water droplet shape and making the cross-section of the spoiler convex hull 103 gradually decrease, in other implementation forms, the spoiler convex hull 103 can also be designed into other shapes, and the cross-section of the spoiler convex hull 103 can adopt other design methods, which are all acceptable and not restricted here, as long as it can help obtain a better flow-around effect and will not have an adverse impact on the heat exchange flow rate of the plate heat exchanger.
[0066] The plate heat exchanger plate structure of this embodiment is designed as above. On the basis of adopting the U-shaped flow 10, by utilizing the formed end channels 20, the flow rate of the heat exchange fluid at the turning points on both sides of the U-shaped channel 10 can be increased, which helps to avoid the formation of a flow dead zone S with insufficient heat exchange in the U-shaped channel 10, and is beneficial to improving the heat exchange performance of the plate heat exchanger. At the same time, it can also reduce the thinning rate of the material at the middle rib 202, which is conducive to improving the product qualification rate of the plate heat exchanger and has good practicability.
[0067] Embodiment Two
[0068] This embodiment relates to a plate heat exchanger, in which a plurality of plate heat exchanger plate structures in Embodiment One are provided, and adjacent two plate bodies 1 are overlapped with each other by rotating 180° relative to their vertical axes O.
[0069] Among them, after a plurality of plate bodies 1 are stacked according to a set rule, that is, after adjacent two plate bodies 1 are overlapped by rotating 180° relative to their vertical axes O, adjacent plate bodies 1 can be connected by welding.
[0070] At this time, the welding positions between adjacent plate bodies 1, in addition to the flanging 101 position, such as the end rib 201 position, the middle rib 202 position, and the inlet and outlet opening 102 position, etc., also need to be welded to ensure the sealing of these positions and avoid the problem of bypass leakage.
[0071] It should be noted that, except for the plate structures in a plurality of Embodiment One that are overlapped together, other structures in the plate heat exchanger of this embodiment can refer to the relevant parts in the existing plate heat exchangers, and will not be elaborated here.
[0072] The plate heat exchanger of this embodiment, by adopting the plate structure in Embodiment One, helps to avoid the formation of a flow dead zone S with insufficient heat exchange in the U-shaped channel 10, can improve the heat exchange performance of the plate heat exchanger, and at the same time helps to reduce the thinning rate of the material at the middle rib 202, and can improve the product qualification rate of the plate heat exchanger, and has good practicability.
[0073] Embodiment Three
[0074] This embodiment relates to a vehicle, in which the plate heat exchanger in Embodiment Two is provided.
[0075] The vehicle of this embodiment, by adopting the plate heat exchanger in Embodiment Two, can have better heat exchange capacity, helps to improve the thermal management quality of the vehicle, and has good practicability.
[0076] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A plate structure of a plate heat exchanger, characterized in that: It includes a plate body (1) with flanges (101) provided at the edges; A partition part (2) protruding to one side is provided on the plate body (1), and the partition part (2) includes an end rib (201) located at one end of the plate body (1), and an intermediate rib (202) with one end connected to the end rib (201), and the other end of the intermediate rib (202) does not extend to the end of the plate body (1); When two adjacent plate bodies (1) are overlapped together by rotating 180° relative to each other about their vertical axis (O), the intermediate rib (202) is used to separate a U-shaped flow channel (10) between the two plate bodies (1), and the end rib (201) forms an end flow channel (20) between the two plate bodies (1), and the end flow channel (20) communicates the turning parts on both sides of the U-shaped flow channel (10).
2. The plate structure of a plate heat exchanger according to claim 1, characterized in that: The end rib (201) and the plane position on the adjacent plate body (1) enclose and form the end flow channel (20).
3. The plate structure of a plate heat exchanger according to claim 2, characterized in that: Along the vertical axis (O) direction of the plate body (1), the end flow channel (20) is located outside the inlet and outlet openings (102) on the plate body (1).
4. The plate structure of a plate heat exchanger according to claim 3, characterized in that: Along the vertical axis (O) direction of the plate body (1), neither the inlet position nor the outlet position of the end flow channel (20) enters the inner side of the inlet and outlet openings (102) on the plate body (1).
5. The plate structure of a plate heat exchanger according to claim 1, characterized in that: The intermediate rib (202) is offset to one side of the vertical axis (O) of the plate body (1), and the intermediate rib (202) is in contact with the plane position on the adjacent plate body (1).
6. The plate structure of a plate heat exchanger according to any one of claims 1 to 5, characterized in that: A turbulator convex hull (103) protruding to one side is provided on the plate body (1), the turbulator convex hull (103) is located in the U-shaped flow channel (10), and is a plurality of spaced apart in the U-shaped flow channel (10).
7. The plate structure of a plate heat exchanger according to claim 6, characterized in that: In the thickness direction of the plate body (1), the protruding height of the turbulator convex hull (103) is not greater than the protruding height of the intermediate rib (202).
8. The plate structure of a plate heat exchanger according to claim 6, characterized in that: Viewed from the thickness direction of the plate body (1), the turbulator convex hull (103) is in a water droplet shape; and / or, along the protruding direction, the cross section of the turbulator convex hull (103) is gradually reduced.
9. A plate heat exchanger, characterized in that: The plate heat exchanger is provided with a plurality of plate heat exchanger plate sheet structures described in any one of claims 1 to 8, and adjacent two of the plate bodies (1) are superposed together by rotating 180° relative to each other about the vertical axis (O).
10. A vehicle, characterized in that: The vehicle is provided with the plate heat exchanger described in claim 9.