Tree-shaped corrugated plate type water-water plate type heat exchanger

Abstract

The invention relates to a tree-shaped corrugated plate type water-water plate type heat exchanger, and belongs to the technical field of heat exchangers. Comprising a plurality of trunks, each trunk comprises two linear structures which are arranged at an angle alpha, and a plurality of branch structures are arranged on the linear structures of the trunks. Through the synergistic effect of the branch structures and the herringbone corrugated trunks, fluid is accelerated and distributed for the first time when flowing through the trunks and the corrugations; after the fluid enters the branch ripples, the fluid from different directions collides and shears with one another to generate large-scale vortexes, so that macromixing is realized; and compared with a pure herringbone plate heat exchanger, the heat transfer coefficient is obviously improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of corrugated plate heat exchanger, belong to heat exchanger technical field. BACKGROUND

[0002] Plate heat exchanger is a kind of high-efficiency compact heat exchange equipment, widely used in chemical industry, energy, refrigeration, food processing, heating and ventilation and other fields. The traditional plate heat exchanger is stacked by a series of heat exchange plates, and the fluid flows in the channel between the plates for heat exchange. Plate heat exchanger can not only achieve the temperature control of fluid required by industrial process, but also effectively recover waste heat. Heat exchange plate is the core component to complete the heat exchange of cold and hot fluid in plate heat exchanger, which directly determines the heat exchange efficiency and operating power consumption of plate heat exchanger.

[0003] In the prior art, there are generally four forms of heat exchange plates: herringbone, flat corrugated plate, inclined corrugated plate and special-shaped plate. The herringbone plate is the most widely used, but due to uneven distribution of flow channels between the plates, local temperature is often too high. Compared with the herringbone plate, the flat corrugated plate has improved flow channels and smaller flow channel resistance, but the heat transfer effect is reduced. For example: the plate of the plate heat exchanger with publication number US20250102233A1, the technical scheme discloses a multi-segment combined corrugated plate, the plate includes at least two corrugated unit segments; the segment includes a high wave area, a transition area and a middle line; the corrugated angles of adjacent segments can be different, and obstacles can be formed by phase shift and independent setting of the middle line height window height, realizing independent control of different fluid flow paths and resistance, being able to independently optimize the heat transfer coefficient and pressure drop for multiple fluids with different physical and chemical properties, and realizing efficient heat exchange especially under medium and low flow conditions, but the design is carried out on the segmented scale between macro and micro, the flow is systematically managed and customized through the combination, phase shift and window characteristics between segments, and the problem of how to independently and accurately balance the heat exchange performance and flow resistance of multiple fluids with different characteristics is emphasized, and the flexibility and customization of the design are emphasized. The plate heat exchanger with high and low unequal heat transfer areas with publication number CN223376404U, the technical scheme discloses that the plate is divided into a medium inlet area, a medium intermediate area and a medium outlet area along the flow direction; the angles between the plate corrugations and the center line of each area and its sub-areas such as the near end, the middle end and the far end are different, for example, greater than 60° for a high flow resistance area and less than 40° for a low flow resistance area, thereby forming a preset high and low flow resistance distribution; according to the flow and heat exchange requirements of the medium in different areas (inlet, intermediate and outlet) on the plate, the high and low unequal flow resistance areas are formed by setting corrugations with different angles to optimize the overall plate flow distribution; the problem of uneven fluid distribution caused by different flow lengths is solved, and the overall flow balance is achieved. Therefore, the technical scheme for how to strengthen the mixing of the fluid is not proposed. The inclined corrugated plate takes into account the heat transfer and fluidity, but does not fully highlight the characteristics of the herringbone or inclined corrugated plate. In order to take into account the heat transfer effect and improve the flow resistance of the fluid between the plates of the plate heat exchanger, the present application proposes a tree-shaped corrugated plate special-shaped plate for a water-water plate heat exchanger. Defects and deficiencies of the prior art: 1. The flow channel structure of the traditional corrugated plate is single, the fluid distribution is uneven, local thermal stress is concentrated, and the service life of the equipment is affected; 2. The vibration suppression ability of the plate corrugated shape to the fluid is weak, and structural fatigue is easily caused; the local flow dead zone and insufficient heat exchange area of the traditional corrugated plate.

[0004] Therefore, it is urgent to propose a tree-shaped corrugated plate water-water plate heat exchanger to solve the above technical problems. SUMMARY

[0005] To solve the above problems, a tree-shaped corrugated plate water-water plate heat exchanger is provided, and a brief summary of the present application is given below to provide a basic understanding of some aspects of the present application. It should be understood that this summary is not an exhaustive summary of the present application. It is not intended to determine the key or important parts of the present application, nor to limit the scope of the present application.

[0006] Technical scheme of the present application: A tree-shaped corrugated plate water-water plate heat exchanger, comprising: an angle hole is provided on the plate, a corrugated area is provided in the middle of the plate, a flow guide area is provided between the angle hole and the corrugated area, the corrugated area is provided with a plurality of trunks, the trunk comprises two linear structures arranged at an angle α, and a plurality of branch structures are provided on the linear structure of the trunk.

[0007] Preferably: a plurality of branch structures are uniformly arranged along the linear structure of the trunk, and the branch structures on both sides of the trunk are staggered.

[0008] Preferably: the two sides of the linear structure of the trunk are inclined to the water surface and the backwater surface, and the length of the branch structure is 0.2-2 times the width of the trunk.

[0009] Preferably: the corrugated area is hexagonal, and the tip of the trunk is correspondingly arranged on the input side of the plate.

[0010] Preferably: a gasket is provided on the plate, a plurality of plates are sequentially stacked to form a corrugated plate group, and one plate in the corrugated plate group is arranged at 180° with another adjacent plate.

[0011] Preferably: the trunk and branch structure on the plate are formed by stamping, a recess is formed at the back of the protruding structure, the positions of the branch structures on adjacent plates are different by △h, and the branch structures on adjacent plates do not coincide.

[0012] Preferably: it further comprises: a first outer plate, a first pull rod, a cold fluid outlet, a cold fluid inlet, a hot fluid outlet, a hot fluid inlet and a second outer plate, the first outer plate and the second outer plate are respectively located on both sides of the corrugated plate group, and the first outer plate and the second outer plate clamp and fix the corrugated plate group through the uniformly arranged first pull rod.

[0013] Preferably: the second outer plate is provided with a first outlet angle hole, a first inlet angle hole, a second inlet angle hole and a second outlet angle hole at positions corresponding to the four angle holes, respectively, and the four angle holes of a plurality of stacked plates form a cold fluid outlet on the right side of the corrugated plate group, a cold fluid inlet on the right side, a hot fluid outlet on the left side and a hot fluid inlet on the left side, the first outlet angle hole communicates with the cold fluid outlet, the first inlet angle hole communicates with the cold fluid inlet, the second inlet angle hole communicates with the hot fluid inlet, and the second outlet angle hole communicates with the hot fluid outlet.

[0014] Preferably, it also includes a second pull rod, and the two ends of the plate are provided with arc-shaped notches, and the second pull rod passes through the second outer plate, the arc-shaped notches, and the first outer plate.

[0015] The present invention has the following beneficial effects: The synergistic effect of the branch structure and the herringbone corrugated main body of this invention accelerates and initially distributes the fluid as it flows through the main corrugated body; after entering the branch corrugated body, the fluid from different directions collides and shears with each other, generating large-scale vortices and achieving macroscopic mixing; forming a dual enhancement of "macroscopic turbulence + microscopic disturbance", the heat transfer coefficient is significantly improved compared with the pure herringbone plate heat exchanger. The tree-like fractal flow channel network of the present invention ensures that the fluid can be automatically and rationally distributed from the main channel to each branch channel, covering the edges and corners of the plate. This design avoids the "flow channel short circuit" and "flow dead zone" phenomena commonly found in traditional corrugated plates from the root, making the temperature and heat load distribution on the plate surface more uniform, which not only improves the overall heat exchange efficiency, but also alleviates local thermal stress.

[0016] The manufacturing process of this invention is feasible and economical. It adopts a "one-time stamping forming" process, in which tree-like branches and corrugations are formed simultaneously, without the need for secondary processing. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a tree-shaped corrugated plate water-to-water plate heat exchanger.

[0018] Figure 2 This is an exploded view of a tree-shaped corrugated plate water-to-water heat exchanger.

[0019] Figure 3 This is a front view of adjacent plates.

[0020] Figure 4 It is a reverse view of adjacent plates.

[0021] Figure 5 This is a three-dimensional diagram of a tree-shaped corrugated plate water-to-water heat exchanger.

[0022] Figure 6 This is a rear view of a tree-shaped corrugated plate water-to-water heat exchanger.

[0023] Figure 7 This is a schematic diagram of a tree-shaped corrugated plate water-to-water plate heat exchanger. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this invention clearer, the invention is described below with reference to specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0025] Specific implementation method one: Combining Figures 1-7 This embodiment describes a tree-shaped corrugated plate water-to-water plate heat exchanger, comprising: a corner hole 18 at each of the four corners of a square plate; a corrugated region 11 in the middle of the plate; a flow guiding region 17 between the corner holes 18 and the corrugated region 11; the flow guiding region 17 having several radial linear protrusions; the upper left corner hole communicating with the corrugated region through the upper left flow guiding region; the corrugated region communicating with the lower left corner hole through the lower left flow guiding region; and so on on the right side. The corrugated region 11 contains... Several uniformly arranged main trunks 12 are provided. The main trunks 12 are symmetrical herringbone structures. Each main trunk 12 includes two linear structures arranged at an angle α to the X direction. Several branch structures 13 are provided on the linear structures of the main trunks 12. The branch structures 13 are symmetrically arranged with Y as the center. The plates are tree-shaped composite corrugated plates. The heat exchange area (corrugated area) of the plates is composed of periodically arranged herringbone units. This area includes the herringbone main trunk and the branch structures 13 extending from the inclined surface of the main trunk, forming a tree-shaped flow channel network. This invention addresses the problems of uneven fluid distribution, localized thermal stress, flow dead zones, and vibration fatigue in traditional corrugated plates. It pursues an integrated design of "geometric adaptation, flow synergy, heat transfer enhancement, and structural reliability." It introduces branching corrugations on the herringbone main corrugation to form a tree-like fractal flow channel network, thereby optimizing the micro-flow field on the plate surface and enhancing fluid mixing and disturbance.

[0026] Specific Implementation Method Two: Combining Figures 1-7 This embodiment describes a tree-shaped corrugated plate water-to-water plate heat exchanger. The tree-shaped branch structure 13 can be configured as a straight protrusion perpendicular to the center line Y, or the angle between the branch and the main trunk can be 15°–45°, with a length 0.2–2 times the width of the main trunk. Several branch structures 13 are evenly arranged along the linear structure (inclined straight protrusion structure) of the main trunk 12. The branch structures 13 on the water-facing side and the branch structures 13 on the back side of the same main trunk 12 are staggered in the linear structure direction, for example… Figure 3As shown on the left, taking the linear structure on the left side of the main trunk 12 in the first row as an example, there are five branch structures 13 on the water-facing side, and one branch structure is set on the back side between adjacent water-facing branch structures. There are a total of four branch structures 13 on the back side. Several main trunks 12 are evenly arranged along the Y direction so that the adjacent branch structures 13 are staggered. The heat exchange efficiency of this invention is extremely high. The tree structure generates a dual enhancement of "macro-turbulence + micro-disturbance". Through the structural characteristics of the creative tree-like flow channel network, the impact force of the fluid on the plate is dispersed, while the continuous and severe destruction of the water boundary layer is achieved. The tree-like fractal flow channel network of the present invention ensures that the fluid can be automatically and rationally distributed from the main channel to each branch channel, covering the edges and corners of the plate. This design avoids the "flow channel short circuit" and "flow dead zone" phenomena commonly found in traditional corrugated plates from the root, making the temperature and heat load distribution on the plate surface more uniform, which not only improves the overall heat exchange efficiency, but also alleviates local thermal stress.

[0027] Specific implementation method three: Combining Figures 1-7 This embodiment describes a tree-shaped corrugated plate water-to-water plate heat exchanger. The linear structure of the main trunk 12 has both its water-facing and water-returning surfaces (inlet and outlet sides) inclined. Specifically, the cross-section of the linear structures on both sides of the herringbone main trunk 12 is a triangular protruding structure. One end of the branch structure 13 connects to the protruding tip of the main trunk 12 (e.g., at...). Figure 2 The branch structure 13 is connected to the upper side of the main trunk 12, and the other end of the branch structure 13 does not contact the adjacent main trunk 12. The length of the branch structure 13 is 0.2-2 times the width of the linear structure of the herringbone main trunk 12. The present invention innovates at the micro-channel scale and solves the problems of extremely uniform fluid distribution and extreme heat transfer enhancement through intense mixing by perturbing the flow field through fractal geometry inside a single corrugated unit.

[0028] Specific implementation method four: Combination Figures 1-7 This embodiment describes a tree-shaped corrugated plate water-to-water plate heat exchanger. The corrugated region 11 is hexagonal, and the tips of the main stems 12 within the hexagonal corrugated region 11 correspond to the input side of the plates. That is, the two tips of the hexagonal corrugated region 11 are located in the plate input-to-output direction. Figure 5 On the center line Y (upper and lower), the corrugated area 11 is a hexagon symmetrically arranged with respect to the center line Y. The middle edge of the corrugated area 11 is parallel to the center line Y. The herringbone main body 12 ( Figure 5 The linear structures on both sides (left and right) are arranged parallel to the two end slopes of the corrugated area 11 input side, and the structures on both sides of the herringbone trunk 12 near the output side are shortened according to the shape of the end slopes of the hexagonal output side. This invention significantly improves heat exchange efficiency: the synergistic effect of the branch structure and the herringbone corrugated main body accelerates and initially distributes the fluid as it flows through the main corrugated body; after entering the branch corrugated body, the fluid from different directions collides and shears with each other, generating large-scale vortices and achieving macroscopic mixing; forming a dual enhancement of "macroscopic turbulence + microscopic disturbance", the heat transfer coefficient is significantly improved compared with pure herringbone plate heat exchangers.

[0029] Specific Implementation Method Five: Combining Figures 1-7 This embodiment describes a tree-shaped corrugated plate water-to-water plate heat exchanger. Each plate is equipped with a sealing gasket 9. Several plates are stacked sequentially to form a corrugated plate group 1. In the corrugated plate group 1, one plate is positioned at 180° to the adjacent plate 1. This can be understood as follows: Figure 3 or Figure 4 The left-side plate 1 shown is marked as the original position of a plate. The adjacent plate rotates 180° around its center to form the right-side plate 1. The sealing gasket on the plate also rotates with it.

[0030] Specific Implementation Method Six: Combination Figures 1-7 This embodiment describes a tree-shaped corrugated plate water-to-water plate heat exchanger, such as... Figure 3 As shown, the main trunk 12 and branch structures 13 on the plates are formed by stamping, which is convenient for processing. A recess is formed on the back of the raised structure. The positional difference between the branch structures 13 on adjacent plates is Δh = 4.13-4.2 mm, ensuring that adjacent branch structures 13 do not overlap. When the fluid passes through adjacent plates, the raised and recessed structures on both sides of the fluid generate a pressure difference, pushing the fluid to deflect. A small-scale backflow zone is formed when the fluid passes through the recessed branch structure on the back. The stable main flow and the multi-point distributed backflow interact, significantly increasing the intensity of turbulence. The fluid distribution is extremely uniform; the tree-like fractal structure automatically distributes the fluid to every corner of the plate. This invention fundamentally eliminates flow dead zones and short circuits. Regarding vibration and fatigue resistance, the invention utilizes a branched structure to perform secondary cutting and guidance of the fluid, generating strong local eddies and lateral (Y and Z) mixing. Considering factors such as contact area and fluid flow, it not only enhances heat transfer but also, through its innovative structural design, allows for one-time stamping, facilitating manufacturing and controlling production and usage costs, thus improving heat transfer efficiency and possessing significant economic and promotional value. The complex tree-like structure enhances plate stiffness and the ability to suppress fluid disturbances, optimizing flow distribution while simultaneously suppressing vibration and enhancing fluid mixing.

[0031] Specific implementation method seven: Combination Figures 1-7This embodiment describes a tree-shaped corrugated plate water-to-water plate heat exchanger, which further includes: a first outer plate 2, a first tie rod 3, a cold fluid outlet 10, a cold fluid inlet 14, a hot fluid outlet 15, a hot fluid inlet 16, and a second outer plate 20. The first outer plate 2 and the second outer plate 20 serve as clamping plates located on both sides of the corrugated plate assembly 1. The first outer plate 2 and the second outer plate 20 clamp and fix the corrugated plate assembly 1 by the evenly arranged first tie rods 3. The first tie rod 3 includes a bolt and a nut, and the first tie rod 3 passes through the first outer plate 2 and the second outer plate 20 and is threadedly connected to the nut.

[0032] Specific implementation method eight: Combination Figures 1-7 This embodiment describes a tree-shaped corrugated plate water-to-water plate heat exchanger. The second outer plate 20 has four corner holes 18 corresponding to a first outlet corner hole 5, a first inlet corner hole 7, a second inlet corner hole 6, and a second outlet corner hole 8. The first outlet corner hole 5 can be a cold fluid outlet corner hole, the first inlet corner hole 7 can be a cold fluid inlet corner hole, the second inlet corner hole 6 can be a hot fluid inlet corner hole, and the second outlet corner hole 8 can be a hot fluid outlet corner hole. Flanges 4 are provided at the outlet and inlet corner holes. The four corner holes 18 of several stacked plates form a cold fluid outlet 10 on the right side of the corrugated plate group 1, a cold fluid inlet 14 on the right side, a hot fluid outlet 15 on the left side, and a hot fluid inlet 16 on the left side. The first outlet corner hole 5 communicates with the cold fluid outlet 10, the first inlet corner hole 7 communicates with the cold fluid inlet 14, the second inlet corner hole 6 communicates with the hot fluid inlet 16, and the second outlet corner hole 8 communicates with the hot fluid outlet 15.

[0033] Specific Implementation Method Nine: Combining Figures 1-7 This embodiment describes a tree-shaped corrugated plate water-to-water plate heat exchanger, which also includes a second tie rod 21. The plates have arc-shaped notches 19 at the middle of both ends in the Y direction. The second tie rod 21 passes through the second outer plate 20, the arc-shaped notches 19, and the first outer plate 2 to fix the corrugated plate assembly 1 neatly, which is convenient for installation. The structure of the second tie rod 21 is the same as that of the first tie rod 3.

[0034] Example 1: Combination Figures 1-7 The tree-shaped corrugated plate heat exchanger of this embodiment is a plate heat exchanger with a herringbone trunk and branching plates. The plates include the plate body, and the heat exchange area of ​​the plates is composed of periodically arranged herringbone units. The herringbone unit includes a herringbone trunk, which is composed of two trunk slopes (sloping walls on a linear structure, including a water-facing side and a water-returning side) that intersect at a certain angle. On one or two trunk slopes of the herringbone trunk, a branching structure extending from the slope is provided.

[0035] The bifurcated branch structure consists of branch ribs protruding from the inclined surface of the main trunk.

[0036] The bifurcated branch structure forms a non-zero angle with the centerline of the herringbone trunk slope, with a branch angle of 15°-45°.

[0037] The bifurcated branch structures on the same herringbone-shaped main slope are multiple and arranged sequentially along the direction of fluid flow.

[0038] like Figure 7 The direction of the middle arrow indicates the flow direction. Along the fluid flow direction, adjacent branch structures are arranged in an alternating pattern on the main slope.

[0039] The length of the bifurcated branch structure is 0.2-2 times the width of the herringbone trunk.

[0040] The bifurcated branch structures on the two main inclined surfaces of the herringbone-shaped trunk have the same distribution density, branch angle, or length.

[0041] The plate is stacked with the same plate after being rotated 180°, so that the herringbone-shaped main body of the two plates supports each other and forms a complex cross flow channel.

[0042] like Figure 5 and Figure 7 As shown, the heat exchange area of ​​the plate in this embodiment is composed of periodically arranged herringbone units. Each herringbone unit includes a herringbone trunk, which is composed of two inclined surfaces of the trunk at a certain angle.

[0043] like Figure 7 As shown, the bifurcated branch structure is set on both main inclined surfaces, and the branches on both sides are staggered; in addition, the branch structure is in the form of protruding ribs, and its branch angle is 15°-45°; this design can generate stronger lateral mixing in the flow channel.

[0044] like Figure 7As shown, the fluid does not flow in a straight line, but is forced to flow along the inclined wall of the herringbone-shaped main channel, resulting in a zigzag overall flow path and generating a large-scale spiral secondary flow perpendicular to the main flow direction. When the fluid flows along the inclined surface of the main channel, some of the fluid, especially the low-velocity fluid near the wall, enters the bifurcation structure 13. Because the bifurcation branches form a certain angle with the centerline of the inclined surface of the main channel, the flow direction of this part of the fluid is changed again. At the instants when the fluid flows into, through, and out of the bifurcation branches, strong local vortices are generated due to the sudden change in the flow cross-section and the sharp deflection of the direction. These vortices-carrying fluids, after flowing out of the bifurcation branches, collide at high speed and merge into the main flow of the main channel. The bifurcation structure is arranged periodically along the flow direction. This process generates a series of smaller vortices, increasing the mixing between fluids and lengthening the actual flow path of the fluid on the heat exchange surface. These three factors work together to greatly enhance the heat exchange process.

[0045] Example 2: Combination Figures 1-7 The tree-shaped corrugated plate heat exchanger of this embodiment includes a tree-shaped composite corrugated plate 1, two outer plates, a first tie rod 3 (clamping bolt), a flange 4, and a sealing gasket 5; Assembly process: Stack 20 plates at intervals using sealing gaskets 5 (alternating arrangement of cold and hot runners), fix them on both sides with 15mm thick carbon steel clamping plates (first outer plate 2, second outer plate 20), and lock them in place with 10 M20 clamping bolts (eight first tie rods 3, two second tie rods 21). Align flange 4 with the corner holes of the plates to complete the assembly.

[0046] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be permuted and combined. Those skilled in the art can exhaust all possibilities based on the mathematical knowledge of permutation and combination. Therefore, the present invention will not describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by the present invention.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A tree-shaped corrugated plate water-to-water plate heat exchanger, comprising: The plate is provided with corner holes (18), and a corrugated area (11) is provided in the middle of the plate. A flow guiding area (17) is provided between the corner holes (18) and the corrugated area (11). The plate is characterized in that: the corrugated area (11) is provided with several main trunks (12), the main trunks (12) include two linear structures arranged at an angle α, and several branch structures (13) are provided on the linear structures of the main trunks (12).

2. The tree-shaped corrugated plate water-to-water plate heat exchanger according to claim 1, characterized in that: Several branch structures (13) are uniformly arranged along the linear structure of the trunk (12), and the branch structures (13) on both sides of the trunk (12) are staggered.

3. A tree-shaped corrugated plate water-to-water plate heat exchanger according to claim 1, characterized in that: The linear structure of the main trunk (12) is inclined on both sides, and the length of the branch structure (13) is 0.2-2 times the width of the main trunk (12).

4. A tree-shaped corrugated plate water-to-water plate heat exchanger according to claim 3, characterized in that: The corrugated area (11) is hexagonal, and the tip of the main stem (12) is set to correspond to the input side of the plate.

5. A tree-shaped corrugated plate water-to-water plate heat exchanger according to claim 4, characterized in that: A sealing gasket (9) is provided on the plate. Several plates are stacked in sequence to form a corrugated plate group (1). In the corrugated plate group (1), one plate is set at 180° with the adjacent plate (1).

6. A tree-shaped corrugated plate water-to-water plate heat exchanger according to claim 5, characterized in that: The main trunk (12) and branch structure (13) on the plate are formed by stamping, and a recess is formed on the back of the protruding structure. The positions of the branch structures (13) on adjacent plates differ by Δh, and the branch structures (13) between adjacent plates do not overlap.

7. A tree-shaped corrugated plate water-to-water plate heat exchanger according to claim 5, characterized in that: Also includes: The first outer plate (2), the first tie rod (3), the cold fluid outlet (10), the cold fluid inlet (14), the hot fluid outlet (15), the hot fluid inlet (16) and the second outer plate (20) are respectively located on both sides of the corrugated plate assembly (1). The first outer plate (2) and the second outer plate (20) clamp and fix the corrugated plate assembly (1) by the evenly arranged first tie rod (3).

8. A tree-shaped corrugated plate water-to-water plate heat exchanger according to claim 7, characterized in that: The second outer plate (20) is provided with a first outlet corner hole (5), a first inlet corner hole (7), a second inlet corner hole (6), and a second outlet corner hole (8) respectively at the positions corresponding to the four corner holes (18). The four corner holes (18) of several stacked plates form a cold fluid outlet (10) on the right side of the corrugated plate group (1), a cold fluid inlet (14) on the right side, a hot fluid outlet (15) on the left side, and a hot fluid inlet (16) on the left side. The first outlet corner hole (5) is connected to the cold fluid outlet (10), the first inlet corner hole (7) is connected to the cold fluid inlet (14), the second inlet corner hole (6) is connected to the hot fluid inlet (16), and the second outlet corner hole (8) is connected to the hot fluid outlet (15).

9. A tree-shaped corrugated plate water-to-water plate heat exchanger according to claim 8, characterized in that: It also includes a second pull rod (21), and the two ends of the plate are provided with arc-shaped notches (19). The second pull rod (21) passes through the second outer plate (20), the arc-shaped notches (19), and the first outer plate (2).

Images