Asymmetric channel plate heat exchanger

Abstract

The application relates to the technical field of plate heat exchangers, and discloses an asymmetric flow channel plate heat exchanger device, which comprises a base, one side of the base is fixedly connected with a connecting plate, the other side of the base is fixedly connected with a back plate, the bottom of the connecting plate is provided with a connecting piece, the rear side of the connecting piece is provided with a plurality of rotating pieces, the rotating pieces are rotationally connected between two adjacent rotating pieces from front to back, the rotating piece at the front side is rotationally connected with the connecting piece, and a plurality of sliding rods are fixedly connected between the connecting plate and the back plate. The connecting box at the rear side is pulled by a cylinder, the plurality of connecting boxes are connected through rotating rods and rotating pieces, the distance between the connecting boxes is changed, the first plate piece and the second plate piece at the top of the connecting box are exposed, damaged plate pieces can be quickly found during maintenance, and the problems that plate pieces are hidden and difficult to position during maintenance of the existing plate heat exchanger, the plate pieces need to be disassembled one by one, and time and labor are consumed are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plate heat exchangers, in particular to an asymmetric flow channel plate heat exchanger. BACKGROUND

[0002] The flow channel plate heat exchanger is a high-efficiency and compact heat exchange device widely used in many fields such as industrial production and civil facilities. It allows cold and hot fluids to enter the staggered flow channels formed by adjacent plates and sealing gaskets, and can select reverse or forward flow mode according to actual needs. Heat transfer occurs through the plates during the flow process, thereby regulating the temperature of the fluid to meet the temperature control requirements of the process in industrial production such as chemical industry and power generation, as well as the heat exchange requirements in civil facilities such as building heating and air conditioning systems.

[0003] In the conventional heat exchanger, the plates are enclosed in a compression frame, so that the surface state of the plates cannot be directly observed during maintenance, and local corrosion and small cracks may be easily overlooked. When a positioning fault occurs, it needs to be repeatedly disassembled and checked, which is time-consuming and labor-intensive, and affects the continuity of production. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides an asymmetric flow channel plate heat exchanger to solve the problem that the plate state of the existing heat exchanger cannot be directly observed during maintenance, which requires repeated disassembly and checking.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: an asymmetric flow channel plate heat exchanger, comprising a base, one side of the base is fixedly connected with a connecting plate, the other side of the base is fixedly connected with a back plate, the bottom of the connecting plate is provided with a connecting piece, the rear side of the connecting piece is provided with a plurality of rotating pieces, the front and rear two rotating pieces are rotatably connected, the front rotating piece is rotatably connected with the connecting piece, a plurality of sliding rods are fixedly connected between the connecting plate and the back plate, a plurality of connecting boxes are slidably connected between the two sliding rods at the bottom, a rotating rod is fixedly connected to the middle of each of the plurality of rotating pieces, each rotating rod is rotatably connected with the adjacent connecting box, a plurality of first plates are arranged between the connecting plate and the back plate, a second plate is arranged at the rear side of each first plate, a disassembly assembly is arranged in each connecting box, and a blocking assembly is arranged in the connecting plate.

[0006] By adopting the above technical scheme, when the plate heat exchanger is maintained, the user can move the rear connecting box, connect the connecting box with the rotating rod and the rotating piece, drive all connecting boxes to move, adjust the distance between the connecting boxes, separate the first plate and the second plate at the top of the connecting box, and directly observe the plate state without repeated disassembly and checking.

[0007] Preferably, the disassembly assembly comprises a plurality of springs, the opposite ends of the plurality of springs are fixedly connected with the connecting boxes, the adjacent ends of the plurality of springs are fixedly connected with limiting pieces, the limiting pieces are slidably connected with the connecting boxes, an oval disc is arranged between two limiting pieces, and the oval disc is fixedly connected with the adjacent rotating rods.

[0008] Preferably, the blocking assembly comprises a rotating rod, the rotating rod is rotatably connected with the connecting plate, the bottom end of the rotating rod is fixedly connected with the connecting piece, a plurality of sliding grooves are formed in the surface of the rotating rod, a plurality of racks are slidably connected with the surfaces of the sliding grooves, a plurality of gears are meshingly connected with the surfaces of the plurality of racks, a plurality of balls are fixedly connected at the two ends of the plurality of gears, and a plurality of holes are formed in the surfaces of the plurality of balls.

[0009] Preferably, a plurality of connecting pipes are fixedly connected to the front side of the connecting plate, the plurality of balls are located inside the connecting pipes, and the plurality of balls are rotatably connected with the connecting pipes.

[0010] Preferably, a plurality of sliding rails are fixedly connected to the top of the connecting box, and the first plate and the second plate are slidably arranged between the two adjacent sliding rails.

[0011] Preferably, a fixing plate is arranged on the front side of the back plate, and the fixing plate is slidably connected with the two sliding rails on the rear side.

[0012] Preferably, a plurality of first recesses are formed in the first plate, a plurality of second recesses are formed in the second plate, a sealing ring is fixedly connected to the inside of the first plate and the second plate, and a connecting groove is formed in the bottom of the first plate, the second plate and the fixing plate.

[0013] Preferably, the sliding rail is slidably connected with the adjacent sliding rod, and a guide groove is formed in the adjacent side of the sliding rail.

[0014] Preferably, a gas cylinder is fixedly connected to the front side of the back plate, and the output end of the gas cylinder is fixedly connected with the adjacent connecting box.

[0015] Preferably, the rack is slidably connected with the rotating rod, and the rack is located inside the connecting plate.

[0016] Working principle: when the user overhauls the asymmetric channel plate heat exchanger, the gas cylinder pulls or pushes the connected connecting box, because a plurality of connecting boxes are connected with the rotating rod and the rotating piece, the adjacent rotating piece also rotates and is connected, driving all the connecting boxes to move, changing the distance between the connecting boxes, so that the first plate and the second plate exposed in the sliding rail are exposed, facilitating observation and maintenance.

[0017] Meanwhile, the connecting box moves to rotate the rotating rod, drive the elliptical disc to rotate, and the limiting pieces are close to each other under the action of the spring, so that the first plate and the second plate can be quickly disassembled, and the connecting box moves to rotate the connecting piece and the rotating rod, the sliding groove guide rack on the rotating rod slides to drive the gear and the ball to rotate, and the connecting pipe is blocked to prevent fluid leakage, and in addition, the first plate and the second plate are connected with the connecting box through the bottom connecting groove, and the asymmetric groove and the sealing ring in the interior optimize heat exchange and prevent leakage.

[0018] The present application provides an asymmetric flow channel plate heat exchanger.

[0019] 1、In the present application, the connecting box at the rear side is pulled by the air cylinder, and the distance between the multiple connecting boxes is changed due to the connection of the rotating rod and the rotating piece, so that the first plate and the second plate at the top of the connecting box are exposed, which facilitates the quick finding of damaged plates during maintenance, solves the problems of hidden plate positioning and time-consuming and labor-consuming disassembly of the existing plate heat exchanger during maintenance, and avoids the risk of damage to the sealing element and deformation of the plate caused by repeated disassembly in traditional maintenance.

[0020] 2、In the present application, when the multiple connecting boxes move, the multiple rotating pieces drive the rotating rod to rotate, the rotating rod drives the elliptical disc to rotate, and the two limiting pieces are close to each other under the action of the spring, so that the first plate, the second plate and the fixed plate can be pulled out upward, thereby realizing the quick disassembly of the damaged plate.

[0021] 3、In the present application, when the multiple connecting boxes move, the connecting piece and the rotating piece rotate, and the rotating rod rotates synchronously when the connecting piece rotates, and the rotating rod moves the rack to both sides when rotating due to the sliding of the rack in the sliding groove, and the gear drives the ball to rotate to block the connecting pipe at this time, so that the fluid cannot continue to flow, and the automatic closing of fluid transmission is realized when the multiple connecting boxes are separated, and leakage is prevented. DETAILED DESCRIPTION

[0022] Figure 1 It is a perspective view of the asymmetric flow channel plate heat exchanger of the present application;

[0023] Figure 2 It is a schematic view of the air cylinder of the asymmetric flow channel plate heat exchanger of the present application;

[0024] Figure 3 It is a schematic view of the connecting box of the asymmetric flow channel plate heat exchanger of the present application;

[0025] Figure 4 It is a schematic view of the first plate of the asymmetric flow channel plate heat exchanger of the present application;

[0026] Figure 5It is a rotating part schematic view of the asymmetric flow channel plate heat exchanger of the present application;

[0027] Figure 6 It is a limiting part schematic view of the asymmetric flow channel plate heat exchanger of the present application;

[0028] Figure 7 It is a round ball schematic view of the asymmetric flow channel plate heat exchanger of the present application;

[0029] Figure 8 It is a chute schematic view of the asymmetric flow channel plate heat exchanger of the present application.

[0030] 1, base; 2, connecting plate; 3, connecting pipe; 4, back plate; 5, air cylinder; 6, sliding rod; 7, sliding rail; 8, first plate; 9, second plate; 10, fixed plate; 11, connecting box; 12, connecting piece; 13, rotating part; 14, first groove; 15, second groove; 16, sealing ring; 17, rotating rod; 18, oval disc; 19, spring; 20, limiting part; 21, rotating rod; 22, chute; 23, rack; 24, gear; 25, round ball; 26, hole; 27, connecting groove. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings in the specification. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0032] Please refer to the drawings in the specification Figure 1 - the drawings in the specification Figure 5 The asymmetric flow channel plate heat exchanger provided by the embodiments of the present application comprises a base 1, one side of the base 1 is fixedly connected with a connecting plate 2, the other side of the base 1 is fixedly connected with a back plate 4, the bottom of the connecting plate 2 is provided with a connecting piece 12, the rear side of the connecting piece 12 is provided with a plurality of rotating parts 13, the two rotating parts 13 adjacent in front and back are rotationally connected, the rotating part 13 in front is rotationally connected with the connecting piece 12, a plurality of sliding rods 6 are fixedly connected between the connecting plate 2 and the back plate 4, a plurality of connecting boxes 11 are slidingly connected between the two sliding rods 6 at the bottom, rotating rods 17 are fixedly connected to the middle of the plurality of rotating parts 13, the plurality of rotating rods 17 are rotationally connected with the adjacent connecting boxes 11, a plurality of first plates 8 are arranged between the connecting plate 2 and the back plate 4, second plates 9 are arranged at the rear side of the plurality of first plates 8, dismounting assemblies are arranged inside the plurality of connecting boxes 11, and a blocking assembly is arranged inside the connecting plate 2.

[0033] Specifically, when the first plate 8 and the second plate 9 need to be inspected, the rear connecting box 11 is moved, and since the connecting box 11 is connected with the rotating member 13 through the rotating rod 17 and is rotationally connected between adjacent rotating members 13, the movement of the rear connecting box 11 will drive all the connecting boxes 11 to move synchronously, so as to adjust the spacing between the connecting boxes 11, thereby separating the first plate 8 and the second plate 9 at the top of the connecting box 11, facilitating the user to observe and maintain, the disassembly assembly is used for quickly disassembling and maintaining the damaged first plate 8 or second plate 9, and the blocking assembly is used for automatically interrupting the fluid transmission during maintenance.

[0034] Referring to the accompanying drawings Figure 5 and the accompanying drawings Figure 6 The disassembly assembly comprises a plurality of springs 19, opposite ends of the plurality of springs 19 are fixedly connected with the connecting box 11, adjacent ends of the plurality of springs 19 are fixedly connected with a limiting piece 20, the plurality of limiting pieces 20 are slidingly connected with the connecting box 11, and an oval disc 18 is arranged between two limiting pieces 20, and the oval disc 18 is fixedly connected with the adjacent rotating rod 17.

[0035] Specifically, when the user needs to disassemble the plate, the connecting box 11 moves to drive the rotating rod 17 to rotate, the rotating rod 17 drives the oval disc 18 to rotate, and the two limiting pieces 20 are brought close to each other under the action of the plurality of springs 19 in the rotating process of the oval disc 18, at this time, the first plate 8 and the second plate 9 can be pulled out upward, realizing the quick disassembly of the plate, solving the problem of time and labor consumption in the traditional maintenance process of disassembling the plate piece by piece, and avoiding the risk of damage to the sealing element and deformation of the plate caused by repeated disassembly.

[0036] Referring to the accompanying drawings Figure 7 and the accompanying drawings Figure 8 The blocking assembly comprises a rotating rod 21, the rotating rod 21 is rotationally connected with the connecting plate 2, the bottom end of the rotating rod 21 is fixedly connected with the connecting piece 12, a plurality of sliding grooves 22 are formed in the surface of the rotating rod 21, a plurality of racks 23 are slidingly connected with the surfaces of the plurality of sliding grooves 22, a plurality of gears 24 are meshingly connected with the surfaces of the plurality of racks 23, a plurality of spherical balls 25 are fixedly connected at two ends of the plurality of gears 24, and a plurality of holes 26 are formed in the surfaces of the plurality of spherical balls 25.

[0037] Specifically, when the plurality of connecting boxes 11 move, the connecting piece 12 will rotate with the rotating member 13, the connecting piece 12 drives the rotating rod 21 to rotate synchronously, the racks 23 move to both sides under the guiding action of the sliding grooves 22 when the rotating rod 21 rotates, the racks 23 drive the gears 24 and the spherical balls 25 to rotate, the angle of the holes 26 formed in the surface of the spherical ball 25 changes when the spherical ball 25 rotates to a certain position, realizing the automatic closing of the fluid transmission, and effectively preventing the fluid from leaking when the plurality of connecting boxes 11 are separated during the maintenance of the plate heat exchanger, thereby avoiding the safety hazards and environmental pollution caused by the fluid leakage.

[0038] Referring to the drawings Figure 1 and the drawings Figure 7 A plurality of connecting pipes 3 are fixedly connected to the front side of the connecting plate 2, and a plurality of spherical balls 25 are located inside the connecting pipes 3 and are rotatably connected to the connecting pipes 3.

[0039] Specifically, when the spherical ball 25 rotates to a specific position, the surface hole 26 of the spherical ball 25 is misaligned with the passage of the connecting pipe 3, the connecting pipe 3 is blocked, and fluid flow is prevented, so that timely and effective prevention of fluid leakage in the connecting pipe 3 is achieved when the maintenance connecting box 11 is separated, the safety of the maintenance environment is ensured, and normal maintenance of the equipment is ensured.

[0040] Referring to the drawings Figure 2 and the drawings Figure 3 A plurality of sliding rails 7 are fixedly connected to the top of each of the connecting boxes 11, and a plurality of first and second plate pieces 8 and 9 slide between two adjacent sliding rails 7 in front and back.

[0041] Specifically, the rear connecting box 11 is pulled, the plurality of connecting boxes 11 change in spacing due to the connection of the rotating rod 17 and the rotating piece 13, at this time, the plurality of sliding rails 7 fixedly connected to the top of the connecting box 11 also change in position, and since the plurality of first and second plate pieces 8 and 9 slide between two adjacent sliding rails 7 in front and back, the movement of the sliding rails 7 causes the first and second plate pieces 8 and 9 to be exposed, which facilitates positioning and contact by the user, so that the plate pieces can be orderly exposed when the connecting box 11 is moved, the problem of hidden plate pieces in a traditional plate heat exchanger is solved, the user can quickly find the plate pieces to be maintained, the maintenance efficiency is improved, and the number of the first and second plate pieces 8 and 9 can be installed between the sliding rails 7 according to actual needs, thereby meeting different flow requirements.

[0042] Referring to the drawings Figure 1 and the drawings Figure 2 A fixed plate 10 is arranged on the front side of the back plate 4 and is slidably connected between the two sliding rails 7 on the rear side.

[0043] Specifically, the fixed plate 10 is installed on the last side and is attached to the last first or second plate piece 8 or 9, so as to block the passages at the four corners of the first or second plate piece 8 or 9, so that the fluid can only flow through the groove formed in the first or second plate piece 8 or 9, thereby achieving heat exchange.

[0044] Referring to the drawings Figure 2 and the drawings Figure 4 A plurality of first recesses 14 are formed in each of the first plate pieces 8, a plurality of second recesses 15 are formed in each of the second plate pieces 9, a sealing ring 16 is fixedly connected to the inside of each of the first and second plate pieces 8 and 9, and a connecting groove 27 is formed in the bottom of each of the first and second plate pieces 8 and 9 and the fixed plate 10.

[0045] Specifically, the first groove 14 inside the first plate 8 is V-shaped and narrow, and the second groove 15 inside the second plate 9 is U-shaped and wide, thereby forming an asymmetric flow channel, in which the fluid flows fast and turbulently in the first groove 14 and flows slowly and stays long in the second groove 15, thereby optimizing the heat exchange efficiency, and the sealing ring 16 fixed inside the first plate 8 and the second plate 9 prevents fluid leakage and ensures stable heat exchange, the asymmetric flow channel is achieved by special groove shape design, and the heat exchange effect is improved, and the first plate 8, the second plate 9 and the fixed plate 10 are connected with the limiting piece 20 through the connecting groove 27 at the bottom, thereby realizing the fixation of the first plate 8, the second plate 9 and the fixed plate 10 on the connecting box 11.

[0046] Referring to the accompanying drawings Figure 2 and the accompanying drawings Figure 3 , the plurality of sliding rails 7 are slidingly connected between adjacent sliding rods 6, and the plurality of sliding rails 7 are provided with guide grooves on the adjacent sides.

[0047] Specifically, the connecting box 11 moves to drive the plurality of sliding rails 7 connected thereto to move, since the plurality of sliding rails 7 are slidingly connected between adjacent sliding rods 6, the sliding rails 7 slide along the sliding rods 6, and the guide grooves provided on the adjacent sides of the plurality of sliding rails 7 allow the first plate 8, the second plate 9 and the fixed plate 10 to be pulled out upwardly to be quickly disassembled.

[0048] Referring to the accompanying drawings Figure 1 and the accompanying drawings Figure 2 , the back plate 4 is fixedly connected with the air cylinder 5 at the front side, and the output end of the air cylinder 5 is fixedly connected with the adjacent connecting box 11.

[0049] Specifically, when the user wants to overhaul the plate heat exchanger, the output end of the air cylinder 5 is extended or retracted, thereby pulling or pushing the connecting box 11 connected thereto, the movement of the connecting box 11 drives the connecting box 11 to act through the rotating rod 17 and the rotating piece 13, so that the distance between the plurality of connecting boxes 11 is changed, and the first plate 8 and the second plate 9 at the top of the connecting box 11 are exposed, which is convenient for the user to observe.

[0050] Referring to the accompanying drawings Figure 7 and the accompanying drawings Figure 8 , the plurality of racks 23 are slidingly connected with the rotating rods 21, and the plurality of racks 23 are located inside the connecting plate 2.

[0051] Specifically, the connecting box 11 moves to drive the rotating member 13 and the connecting member 12 to rotate. When the rotating rod 21 rotates, the sliding groove 22 formed on the surface of the rotating rod 21 guides the rack 23 to slide on the rotating rod 21. The sliding of the rack 23 drives the gear 24 engaged with the rack 23 to rotate, so that the ball 25 rotates to block the connecting pipe 3, preventing fluid leakage and providing necessary transmission links to ensure automatic fluid blocking when the connecting box 11 is separated for maintenance, thereby improving the safety and practicability of the device.

[0052] The working steps of the above asymmetric flow channel plate heat exchanger are as follows: when the user prepares for maintenance, the cylinder 5 is started to pull or push the rear connecting box 11. Since the connecting box 11 is connected with the rotating member 13 through the rotating rod 17 and adjacent rotating members 13 are connected by rotating, all the connecting boxes 11 move synchronously to adjust the spacing, drive the top sliding rail 7 to change, and expose the first plate 8 and the second plate 9 sliding between the sliding rails 7 for easy observation. The fixed plate 10 is slidingly connected with the rear sliding rail 7 and blocks the last plate hole to make the fluid flow along the groove for heat exchange.

[0053] If the plates need to be disassembled, the connecting box 11 moves to drive the rotating rod 17 to rotate, and then the elliptical disc 18 rotates. The limiting member 20 approaches under the action of the spring 19 to pull out the first plate 8 and the second plate 9 upwardly. At the same time, the connecting box 11 moves to drive the connecting member 12 to drive the rotating rod 21 to rotate. The sliding groove 22 on the rotating rod 21 guides the rack 23 to slide. The rack 23 drives the gear 24 to rotate the ball 25. When the ball 25 rotates to a specific position, the surface hole 26 thereof is misaligned with the connecting pipe 3 passage to block the connecting pipe 3, preventing fluid leakage during maintenance. During the whole process, the asymmetric grooves in the first plate 8 and the second plate 9 optimize the heat exchange efficiency, the sealing ring 16 prevents leakage, and the sliding rail 7 and the sliding rod 6 are slidingly connected and the guide groove is provided to facilitate the upward extraction and disassembly of the plates.

[0054] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An asymmetric flow channel plate heat exchanger, comprising a base (1), characterized in that, A connecting plate (2) is fixedly connected to one side of the base (1), and a back plate (4) is fixedly connected to the other side of the base (1). A connector (12) is provided at the bottom of the connecting plate (2). Multiple rotating parts (13) are provided on the rear side of the connector (12). Two adjacent rotating parts (13) are rotatably connected to each other. The rotating part (13) on the front side is rotatably connected to the connector (12). Multiple sliding rods (6) are fixedly connected between the connecting plate (2) and the back plate (4). Two sliding rods at the bottom are... Multiple connecting boxes (11) are slidably connected between the sliding rods (6), and a rotating rod (17) is fixedly connected to the middle of each of the multiple rotating parts (13). The multiple rotating rods (17) are rotatably connected to the adjacent connecting boxes (11). Multiple first plates (8) are provided between the connecting plate (2) and the back plate (4). A second plate (9) is provided on the rear side of each of the multiple first plates (8). A disassembly assembly is provided inside each of the multiple connecting boxes (11), and a barrier assembly is provided inside the connecting plate (2). The disassembly assembly includes multiple springs (19), each spring (19) having its opposite end fixedly connected to the connecting box (11), each spring (19) having its adjacent end fixedly connected to a limiting member (20), each limiting member (20) having its sliding connection to the connecting box (11), and an elliptical disk (18) being provided between two limiting members (20), the elliptical disk (18) being fixedly connected to an adjacent rotating rod (17). The barrier assembly includes a rotating rod (21), which is rotatably connected to the connecting plate (2). The bottom end of the rotating rod (21) is fixedly connected to the connector (12). The rotating rod (21) has multiple grooves (22) on its surface. Each groove (22) has a rack (23) slidably connected to its surface. Each rack (23) has a gear (24) meshing with its surface. Each gear (24) has a ball (25) fixedly connected to both ends. Each ball (25) has a hole (26) on its surface. The front side of the connecting plate (2) is fixedly connected to multiple connecting pipes (3), and multiple spheres (25) are located inside the connecting pipes (3), and multiple spheres (25) are rotatably connected to the connecting pipes (3).

2. The asymmetric flow channel plate heat exchanger according to claim 1, characterized in that, Multiple slide rails (7) are fixedly connected to the top of each of the multiple connecting boxes (11), and multiple first plates (8) and second plates (9) slide between two adjacent slide rails (7).

3. The asymmetric flow channel plate heat exchanger according to claim 1, characterized in that, A fixing plate (10) is provided on the front side of the back plate (4), and the fixing plate (10) is slidably connected to two slide rails (7) on the rear side.

4. The asymmetric flow channel plate heat exchanger according to claim 1, characterized in that, Multiple first plates (8) are provided with multiple first grooves (14) inside, multiple second plates (9) are provided with multiple second grooves (15) inside, multiple first plates (8) and multiple second plates (9) are fixedly connected with sealing rings (16), and multiple first plates (8), second plates (9) and fixing plates (10) are provided with connecting grooves (27) at the bottom.

5. The asymmetric flow channel plate heat exchanger according to claim 2, characterized in that, Each of the slide rails (7) is slidably connected to an adjacent slide rod (6), and each of the slide rails (7) has a guide groove on an adjacent side.

6. The asymmetric flow channel plate heat exchanger according to claim 1, characterized in that, A cylinder (5) is fixedly connected to the front side of the back plate (4), and the output end of the cylinder (5) is fixedly connected to the adjacent connecting box (11).

7. The asymmetric flow channel plate heat exchanger according to claim 1, characterized in that, The multiple racks (23) are slidably connected to the rotating rod (21), and the multiple racks (23) are located inside the connecting plate (2).

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