A novel heat exchanger plate

Abstract

This utility model relates to a detachable novel heat exchanger plate. It includes sealing areas at both ends, a flow guiding area, and a central wave area. The gap between the supporting protrusions on both sides of the first and second sealing grooves in the sealing areas at both ends is at the same height as the first and second sealing grooves. The flow guiding area includes multiple first and second convex ridges. The first convex ridges run in the same direction as the second sealing groove on one side of the plate, and the second convex ridges run in the same direction as the second sealing groove on the other side of the plate. The first and second convex ridges are at the same height and intersect each other. The spacing between the first and second convex ridges is the same. The height at the intersection of the two convex ridges is higher than the height of the other parts of the convex ridges. The highest points of the protrusions in the two flow guiding areas are opposite to the spacing between the convex ridges. This plate ensures uniform medium distribution, strong pressure resistance, and adaptability to various flow patterns.

Description

Technical Field

[0001] This utility model relates to the field of plate heat exchanger plates, specifically a new type of detachable heat exchanger plate. Background Technology

[0002] Since its development a century ago, plate heat exchangers have seen continuous improvement in quality and design, with new products and plate types constantly emerging and their application areas expanding. They fully embody characteristics such as high efficiency, energy saving, small footprint, easy disassembly, and convenient maintenance. The core component of a plate heat exchanger is the plate itself, and there are currently two main structural forms of plates used in the market. The first is the V-series plate, characterized by the absence of a flow guiding zone; the heat exchange corrugations are directly connected to the two end seals, where the sealing groove 100 and all corrugation support points 200 are fully open. The second, commonly used type is a plate structure similar to Alfa Laval's, featuring a chocolate-shaped tubular flow guiding zone 300. The surrounding sealing grooves are fully enclosed, with the first and second sealing grooves 400 and 500 having closed sealing sides and fully open flow sides, with a strict distinction between the sealing and flow sides.

[0003] Both of the above plate types and processing technologies have their own advantages, disadvantages, and limitations. The V-series plates lack a flow guide zone, resulting in significant fluid flow resistance loss as the medium flows through them, making it difficult to balance the fluid flow. The fully open sealing groove support point structure also limits the equipment's pressure-bearing capacity. Furthermore, due to limitations in the design of the support points on both sides of the first and second sealing grooves and the constraints of the flow guide zone structure, Alfa Laval plates can only achieve unilateral flow. This leads to flow obstruction at the plate edges or certain corners, creating dead zones. The fully enclosed perimeter of the plates also makes them prone to a "backplate" phenomenon after assembly, affecting the appearance quality.

[0004] For the reasons mentioned above, there is an urgent need to develop a brand-new type of plate heat exchanger plate to make up for the shortcomings of the commonly used plate types, reduce equipment resistance loss, reduce flow dead zones, ensure that the plate can achieve multiple flow modes, and facilitate external pipeline connection while improving pressure resistance. Summary of the Invention

[0005] The purpose of this invention is to provide a new type of heat exchanger plate that can improve the pressure resistance of the equipment, reduce the resistance loss of the equipment, and provide a variety of connection methods according to different piping requirements of users.

[0006] The technical solution of this utility model:

[0007] A novel heat exchanger plate includes a left-end sealing area, a right-end sealing area, and a middle corrugated area. A flow guiding area is provided between the left-end sealing area and the middle corrugated area, and a flow guiding area is provided between the right-end sealing area and the middle corrugated area.

[0008] The gap between the support protrusions on both sides of the first and second sealing grooves in the left and right sealing areas is the same height as the first and second sealing grooves. The upper and lower support protrusions in the left sealing area are arranged symmetrically, and the upper and lower support protrusions in the right sealing area are arranged symmetrically. The gaps between the support protrusions in the left and right sealing areas are arranged in opposite directions.

[0009] The flow guiding area includes multiple first and second convex ridges. The first convex ridges have the same orientation as the two sealing grooves on one side of the plate, and the second convex ridges have the same orientation as the two sealing grooves on the other side of the plate. The first and second convex ridges have the same height and intersect each other. The spacing between the first and second convex ridges is the same. The height at the intersection of the two convex ridges is higher than the height of other parts of the convex ridges. The protrusions at the intersection of the convex ridges in the two flow guiding areas are arranged in opposite directions to the lowest point of the gap between the convex ridges.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model's heat exchanger plates feature protrusions between the raised sections on both sides of the first and second sealing grooves in the left and right sealing areas, forming a semi-enclosed structure. This semi-enclosed structure provides rigid support for the plates, preventing deformation. Especially under conditions of high temperature, high pressure, pressure fluctuations, or a large number of plates with high clamping force, it effectively prevents plate misalignment and localized deformation, avoiding the extrusion of the sealing gasket from the gasket groove or damage to the gasket and plates, thus extending the equipment's service life. Furthermore, this utility model employs this semi-enclosed structure on both the flow and sealing sides of the first and second sealing grooves. Regardless of the direction of medium flow, the other side has sufficient semi-enclosed structure to ensure the equipment can withstand high pressures. This innovation overcomes the shortcomings and defects of previous V-series plates with their fully open structure, which had low pressure-bearing capacity, and Alfa Laval plates, which only allowed unilateral flow.

[0012] 2. The heat exchanger plate flow guiding area of ​​this utility model is provided with multiple first convex ridges and second convex ridges, and the spacing between the first convex ridges and second convex ridges is the same. This special structural design brings the following advantages:

[0013] (1) Uniform fluid distribution: The increased flow guide zone enables the fluid to be evenly distributed along the entire width of the plate, making full use of all the plate area, reducing pressure loss, and thus improving heat exchange performance. This overcomes the shortcomings of the previous V-series plates, which had no flow guide zone, the corrugations were directly connected to the second seal, resulting in large local pressure loss, uneven fluid flow, failure to fully utilize the effective heat exchange area of ​​the plate, unstable operation, and easy cracking. This improves the service life of the plate and the heat exchange effect.

[0014] (2) Adaptable to various flow patterns: Whether it is unilateral flow or diagonal flow, the flow guiding zone of this application can guide the flow direction well, which provides convenience for different flow channel designs. At the same time, the appropriate flow mode can be flexibly selected according to the user's installation space and pipeline layout requirements, which makes up for the shortcomings of the previous Alfa Laval flow guiding zone tubular flow guiding form which can only flow unilaterally, and fully meets the ever-changing market demands of users.

[0015] 3. The heat exchanger plates of this utility model allow for various fluid flow combinations. Due to the reasonable design of the semi-enclosed structure with supporting protrusions at the first and second sealing grooves and the reasonable optimization of the flow guiding area, the equipment can switch or select between single-sided flow and diagonal flow according to actual process requirements and fluid characteristics. For some working conditions with small flow and low resistance drop, single-sided flow can be selected, while for working conditions with large flow and higher heat exchange efficiency, diagonal flow can be selected to achieve the best match between heat exchange effect and resistance loss. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the plate structure of the novel heat exchanger of this application.

[0018] Figure 2 This is an enlarged view of the left end of the heat exchanger plate of the present application.

[0019] Figure 3 This is an enlarged view of the right end of the heat exchanger plate of the present application.

[0020] Figure 4 This is a partial enlarged view of the support protrusions of the first and second sealing grooves of the novel heat exchanger plate of this application.

[0021] Figure 5 This is a partial enlarged view of the flow guiding area of ​​the novel heat exchanger plate in this application.

[0022] Figure 6 This is a magnified view of the support points of the first and second sealing grooves of the original V series.

[0023] Figure 7 This is a magnified view of a portion of the original Alfa Laval diversion zone.

[0024] Figure label:

[0025] Left sealing area 1; Right sealing area 2; Middle corrugated area 3; Guide area 4; First sealing groove 5; First and second sealing grooves 6; Support protrusion 7; First ridge 8; Second ridge 9; Protrusion 10; Support arm 11; Boss 12; Peripheral sealing groove 13; Gap 14; Second and second sealing grooves 15; Lowest point of gap 16. Detailed Implementation

[0026] To address the problems in the background technology, a novel heat exchanger plate has been invented. This novel heat exchanger plate has strong pressure resistance, can provide multiple connection methods according to different user piping requirements, and allows for comprehensive optimization of the equipment design, achieving a complete match of performance aspects to meet ever-changing market demands. It has a wide range of applications, is easy to manufacture, and saves materials.

[0027] It should be noted that in the description of this application, terms such as "upper," "lower," "left," "right," "inner," and "outer," which indicate direction or positional relationship, are based on the direction or positional relationship shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0028] like Figure 1 , 2 As shown in Figures 1 and 3, a novel heat exchanger plate includes a left-end sealing area 1, a right-end sealing area 2, and a middle corrugated area 3. A flow guiding area 4 is provided between the left-end sealing area 1 and the middle corrugated area 3, and also between the right-end sealing area 2 and the middle corrugated area 3. The left-end sealing area 1 and the right-end sealing area 2 include corner holes, positioning holes, a first sealing groove, and a second sealing groove. The flow guiding area 4 is used to evenly distribute the medium flowing in from the corner holes, and the middle corrugated area 3 is used for medium heat exchange. The gap 14 between the supporting protrusions 7 on both sides of the first sealing groove 5 and the second sealing groove 6 of the left and right end sealing areas 1 and 2 is at the same height as the first sealing groove 5 and the second sealing groove 6. The upper and lower parts of the left-end sealing area 1 (e.g., ...) Figure 1 The supporting protrusions 7 (as shown above and below) are arranged symmetrically, and the upper and lower parts of the sealing area 2 on the right end (as shown above and below) Figure 1 The arrangement of the support protrusions 7 (as shown above and below) is symmetrical. The gaps between the support protrusions 7 in the left sealing area 1 and the right sealing area 2 are opposite. Here, "opposite" means that the position on the right sealing area corresponding to the support protrusion in the left sealing area is the gap, and the position on the right sealing area corresponding to the gap in the left sealing area is the support protrusion.

[0029] like Figure 2 , 3 The guide area 4 (left-end guide area and right-end guide area) mentioned in section 5 includes multiple first protruding ridges 8 and second protruding ridges 9. The first protruding ridges 8 are transverse to the plate ( Figure 1The first and second sealing grooves 6 on one side (in the width direction of the heat exchange plate) have the same orientation, and the second protruding rib 9 has the same orientation as the second and second sealing grooves 15 on the other side of the plate. The first protruding rib 8 and the second protruding rib 9 have the same height and intersect each other. The spacing between the first protruding ribs 8 and the spacing between the second protruding ribs 9 are the same. The height at the intersection of the first and second protruding ribs with the two orientations is higher than the height of other parts of the protruding ribs. The intersection of the first and second protruding ribs is the highest point, the first and second protruding ribs are the second highest points, and the gap between the first and second protruding ribs is the lowest point (i.e., the lowest gap point 16). Figure 2 , 3 As shown in Figure 5, the protrusions 10 (the highest point at the intersection of the first and second protrusions) in the left and right guide zones are arranged in opposite directions to the lowest point 16 of the gap between the protrusions. Here, "opposite" means that the highest point of the protrusion 10 in the left guide zone corresponds to the lowest point 16 of the gap in the right guide zone, and the lowest point 16 of the gap in the left guide zone corresponds to the highest point of the protrusion 10 in the right guide zone.

[0030] The intersection of the two protruding ridges includes a central protrusion 10 and four support arms 11 extending outward from the outer periphery of the protrusion 10. The support arms 11 are placed in the gap between the two protruding ridges, and the protrusion 10 is used to support and stabilize the plates.

[0031] like Figure 4 As shown, the supporting protrusions of the left and right sealing areas 1 and 2 are connected to each other via bosses 12 at their ends facing the first sealing groove 5 and the second sealing groove 6. The height of the bosses 12 is lower than the height of the supporting protrusions 7. Sealing gaskets are placed in the first and second sealing grooves, and the bosses prevent the gaskets from falling off without affecting the flow of the medium. The supporting protrusions 7 on the outer side of the peripheral sealing groove 13 of the plate are connected to each other via bosses 12 at their ends facing the peripheral sealing groove 13. The height of the bosses 12 is lower than the height of the supporting protrusions 7. The lower height of the bosses prevents the sealing gaskets from being squeezed out and also prevents the plate from exhibiting a "back plate" phenomenon. The ratio of the height of the bosses 12 at the first and second sealing grooves and the sealing grooves around the plate to the height of the supporting protrusions 7 is (0.4-0.5):1.

[0032] like Figure 1-3 As shown, the specific structure of the heat exchanger plate of this application is as follows:

[0033] The novel heat exchanger plate of this application is mainly designed with five regions: a left-end sealing region, a right-end sealing region, a middle corrugated region, a flow guiding region between the left-end sealing region and the middle corrugated region, and a flow guiding region between the right-end sealing region and the middle corrugated region. A key feature is that the supporting protrusions on both sides of the first and second sealing grooves in the left-end sealing region are designed symmetrically, with identical structures. Similarly, the supporting protrusions on both sides of the first and second sealing grooves in the right-end sealing region are designed symmetrically, with identical structures. The gaps between the supporting protrusions at the left and right ends are exactly opposite. The second plate, rotated 180 degrees and assembled with the first plate, forms a honeycomb-shaped fluid channel.

[0034] The sealing grooves around the plate and the supporting protrusions on both sides of the first and second sealing grooves are designed as semi-enclosed structures, meaning adjacent supporting protrusions are connected by bosses (semi-enclosed two-tiered structure), with symmetrical upper and lower structures and consistent dimensions. The flow guiding area connected to the second sealing groove is designed with multiple intersecting ridges on both sides, with supporting protrusions at the intersections. The flow guiding area is symmetrically arranged vertically, and the protrusions in the flow guiding area at the left and right ends of the plate (the highest point at the intersection of the first and second ridges of the plate) are arranged opposite to the lowest point of the gap between the ridges. Due to the unique boss structure between the supporting protrusions around the first and second sealing grooves and the unique design of the flow guiding area, the structure of the flow side and sealing side of the corner holes at the end of the plate is completely identical. The medium can flow in from either end of the upper or lower corner holes at the end and flow out from either end of the upper or lower corner holes at the other end.

[0035] During assembly, the first plate adhesive pad assembly is suspended on the corresponding position of the upper guide rod. The second plate adhesive pad assembly is rotated 180 degrees and suspended on the corresponding position of the upper guide rod. The third plate is assembled in the same direction as the first plate, the fourth plate in the same direction as the second plate, and so on. Several plates form a plate bundle and are clamped and fixed between two clamping plates by clamp studs to form the entire equipment. Since the first and second sealing grooves of the plates are semi-enclosed two-layer platform structures on both sides, and the flow guiding area is a polygonal convex symmetrical structure, the flow mode of the equipment can be adjusted arbitrarily according to the user's pipeline connection and actual working conditions. Regardless of the connection form, the performance of the equipment can be guaranteed, that is, the pressure bearing capacity of the equipment is improved and the resistance loss is reduced, and various performance indicators can achieve optimal matching.

[0036] A comparison table of the performance of the new plate in this application and the existing equipment (all other parameters of the three types of plates are the same).

[0037] parameter This application product Alfa Laval products V series products Heat transfer coefficient K (W / (m2.k)) 5500 4500–5500 4800-5700 Resistance drop ΔP (kPa) 51 60-90 65-105 Pressure bearing capacity P (MPa) 3.0 2.3 1.6

[0038] The support points of the first and second sealing grooves at the left and right ends of the plate in this invention are all semi-enclosed structures. Both the flow and sealing sides of the first and second sealing grooves employ a boss structure between the supporting protrusions. Regardless of the direction of medium flow, the other side has a sufficiently semi-enclosed structure to ensure the equipment can withstand high pressure. The plate's flow guiding area adopts a multi-sided convex ridge cross structure, allowing for both unilateral and diagonal flow, resulting in uniform fluid distribution. All areas of the plate are fully utilized, reducing pressure loss, improving heat exchange performance, and achieving the optimal match between heat exchange efficiency and resistance loss. After pressing, the plate undergoes an integral composite punching process to punch corner holes, positioning holes, and trim edges in one step. This ensures the accuracy of punching positions and dimensions of each part while improving production efficiency and reducing costs. This invention has advantages such as novel and unique concept, compact and reasonable structure, stable and reliable performance, reduced process steps, energy saving and consumption reduction in production, wide application range, broad development prospects, and suitability for industry promotion.

[0039] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art, inspired by this description, design similar structures and implementations to the above embodiments without departing from the technical essence of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A novel heat exchanger plate, comprising a left-end sealing region, a right-end sealing region, and a middle corrugated region, characterized in that: A flow guiding area is provided between the left sealing area and the middle corrugated area, and a flow guiding area is provided between the right sealing area and the middle corrugated area; The gap between the support protrusions on both sides of the first and second sealing grooves in the left and right sealing areas is the same height as the first and second sealing grooves. The upper and lower support protrusions in the left sealing area are arranged symmetrically, and the upper and lower support protrusions in the right sealing area are arranged symmetrically. The gaps between the support protrusions in the left and right sealing areas are arranged in opposite directions. The flow guiding area includes multiple first and second convex ridges. The first convex ridges have the same orientation as the two sealing grooves on one side of the plate, and the second convex ridges have the same orientation as the two sealing grooves on the other side of the plate. The first and second convex ridges have the same height and intersect each other. The spacing between the first and second convex ridges is the same. The height at the intersection of the two convex ridges is higher than the height of other parts of the convex ridges. The protrusions at the intersection of the convex ridges in the two flow guiding areas are arranged in opposite directions to the lowest point of the gap between the convex ridges.

2. The novel heat exchanger plate according to claim 1, characterized in that: The intersection of the two convex ridges includes a central protrusion and four support arms extending outward from the outer periphery of the protrusion, the support arms being positioned within the gap between the two convex ridges.

3. The novel heat exchanger plate according to claim 1, characterized in that: The supporting protrusions of the left and right sealing areas are connected to each other by a boss at one end facing the first sealing groove and the second sealing groove, and the height of the boss is lower than the height of the supporting protrusion.

4. A novel heat exchanger plate according to claim 1, characterized in that: The outer support protrusions of the peripheral sealing groove on the outer periphery of the plate are connected to each other by a boss at one end facing the peripheral sealing groove, and the height of the boss is lower than the height of the support protrusion.

5. A novel heat exchanger plate according to claim 3 or 4, characterized in that: The ratio of the height of the boss to the height of the supporting protrusion is (0.4-0.5):1.

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