Plate heat exchanger

Abstract

The invention relates to the technical field of heat exchange, and discloses a plate heat exchanger which comprises an end plate, two water inlets and two water outlets are formed in the end plate, two connecting rods are installed on one side of the end plate, a clamping plate is installed on the two connecting rods in a sliding mode, and a plurality of limiting holes are formed in the two sides of the end plate and the two sides of the clamping plate. According to the plate type heat exchanger, by means of the funnel-shaped design of an inlet of the pressurizing pipe, the pressure of fluid is increased after the fluid enters the pressurizing pipe, meanwhile, the fluid forms vortex in the pressurizing pipe after passing through the flow guide plate, and therefore the pressure of the fluid is increased; the pressure of the fluid in the pressurizing pipe is further increased, the fluid is extruded by the inner wall of the pressurizing groove when entering the pressurizing groove, the flowing-out speed of the fluid is increased by the pressure in the pressurizing pipe, and the fluid is uniformly discharged from each pressurizing groove, so that the pressure and the flow speed of each section of fluid in the flow guide pipe are relatively balanced; and the fluid in each liquid storage layer is relatively uniformly distributed.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange, and specifically relates to a plate heat exchanger. Background Art

[0002] A plate heat exchanger is an efficient heat transfer device, usually composed of a series of parallel metal plates. These plates are usually made of embossed and concave-convex stainless steel plates formed by stamping. The concave-convex patterns between two adjacent plates are combined relatively at 180 degrees to form staggered contact points. These contact points are joined by vacuum welding to form a high-pressure-resistant staggered flow structure. Sealing gaskets are usually installed on the plates to seal the fluid channels and guide the fluid to flow into their respective flow channels alternately. Four corner holes are also left on the plates for two liquids for heat transfer to pass through. The metal plates are installed in a frame with a fixed plate and a movable pressing plate on one side and clamped with clamping bolts. The metal plate and the movable pressing plate are usually suspended on the upper guide rods and positioned by the lower guide rods, and the rod ends are fixed on the support columns;

[0003] During the actual use of a plate heat exchanger, when the fluid continuously enters the channels between the heat exchange fins, a certain pressure loss will occur. This pressure loss will cause the kinetic energy of the fluid to decrease during the flow process, thereby reducing the flow velocity. When the flow velocity of the fluid changes, the flow state, pressure, temperature distribution, etc. of the fluid will all change accordingly, thereby affecting the distribution of the fluid between the plates. The fluid distribution between different plates may become uneven. The plates with too large a flow rate may reduce the heat exchange efficiency due to too large a pressure drop, while the plates with too small a flow rate may waste energy due to insufficient heat exchange, not only increasing the energy consumption of the heat exchanger, but even possibly causing problems such as plate deformation and seal failure, thus affecting the normal operation of the equipment. For this reason, we propose a plate heat exchanger. Summary of the Invention

[0004] The purpose of the present invention is to provide a plate heat exchanger to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A plate heat exchanger includes end plates. Two water inlets and two water outlets are provided on the end plates. Two connecting rods are fixedly installed on one side of the end plates. One end of each of the two connecting rods is fixedly installed with a column. A clamping plate is slidably installed on the two connecting rods. A number of limiting holes are provided on both sides of the end plates and the clamping plate. A rotating rod is rotatably installed between each two front and rear corresponding limiting holes. A limiting ring cooperating with the end plate is fixedly installed at one end of each rotating rod. A thread groove is also provided on each rotating rod. A sleeve is rotatably installed on each rotating rod. A thread bar cooperating with the thread groove is fixedly installed on the inner wall of each sleeve;

[0006] A number of heat exchange fins are arranged between the end plate and the clamping plate. Limiting grooves adapted to the connecting rods are provided at both the upper and lower ends of each heat exchange fin. Four liquid passing holes are provided at the four corners of each heat exchange fin. The liquid passing holes correspond to the water inlet and the water outlet one by one. A sealing strip for guiding the liquid is fixedly installed on one side of each heat exchange fin, and a sealing groove adapted to the sealing strip is provided on the other side. A liquid storage layer is formed between adjacent two heat exchange fins through the sealing strip. Each liquid storage layer allows liquid to enter and exit through two liquid passing holes on one side of the heat exchange fin, and the liquid passing holes for liquid to enter and exit on adjacent two heat exchange fins are arranged alternately. A flow guiding pipe is fixedly installed in each water inlet. Each flow guiding pipe passes through the corresponding liquid passing hole, and a number of flow guiding grooves are provided thereon. The flow guiding grooves correspond to the liquid storage layer corresponding to the water inlet and are interconnected. A pressurizing pipe is fixedly installed in each flow guiding pipe, and a number of pressurizing grooves are provided on each pressurizing pipe.

[0007] Preferably, the inlet of each pressurizing pipe is arranged in a funnel shape, and each pressurizing groove is arranged in an hourglass shape. The pressurizing grooves are arranged in a spiral pattern on the pressurizing pipe.

[0008] Preferably, a number of flow guiding plates are fixedly installed on the inner wall of the inlet of each pressurizing pipe. Each flow guiding plate is inclined and arranged in a spiral pattern on the inner wall of the pressurizing pipe.

[0009] Preferably, limiting members are provided on both the left and right sides of the clamping plate. A number of sliding cylinders are rotatably installed on each limiting member. A transmission ring is fixedly installed on the outer wall of each sliding cylinder. A transmission belt for transmitting connection between the transmission rings is provided in each limiting member. The sliding cylinders correspond to the sleeves one by one. A jack is provided on each sliding cylinder, and a plug rod adapted to the jack is fixedly installed on each sleeve.

[0010] Preferably, a positioning rod is fixedly installed on each limiting ring. A number of positioning holes for limiting the positioning rods are provided on the end plate. The positioning holes correspond to the positioning rods one by one.

[0011] Preferably, a frame is fixedly installed on the edge of each heat exchange fin. A limiting strip is fixedly installed on one side of each frame, and a card slot for limiting the limiting strip is provided on the other side.

[0012] Preferably, a number of flow dividing grooves are provided on each heat exchange fin. Each flow dividing groove is arranged in a "person" shape.

[0013] Preferably, a number of flow dividing plates for dispersing the liquid flowing into the liquid storage layer are fixedly installed on one side of each heat exchange fin.

[0014] Preferably, the flow directions of the fluids in two adjacent liquid storage layers are set in opposite directions.

[0015] Preferably, a slide rail is fixedly connected between the end plate and the column. Two rollers cooperating with the slide rail are rotatably installed at the upper end of the clamping plate. Guide bars are fixedly installed on both sides of the slide rail, and annular grooves cooperating with the guide bars are provided on each roller.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, the funnel-shaped design at the inlet of the pressurizing pipe causes the pressure of the fluid to increase after entering the pressurizing pipe. At the same time, the fluid will form a vortex in the pressurizing pipe after passing through the guide plate, further increasing the fluid pressure in the pressurizing pipe. And since the pressurizing groove is arranged in a hourglass shape, when the fluid enters the pressurizing groove, it will be squeezed by the inner wall of the pressurizing groove, and the pressure in the pressurizing pipe will make the fluid flow out faster, and the fluid will flow out evenly from each pressurizing groove, making the pressure and flow rate of each section of the fluid in the guide pipe relatively balanced. The fluid then enters the corresponding liquid storage layer through the guide groove, making the fluid distribution in each liquid storage layer relatively uniform, effectively reducing the situation of uneven fluid distribution.

[0018] 2. In the present invention, the rotation rod is fixed by the limit of the insertion hole on the insertion rod. After the sleeves are tightened, they will all be at the same rotation angle. After the sleeves on both sides of the clamping plate are at the same rotation angle, there will be no angular difference between the upper and lower sides of the clamping plate. The clamping forces on both sides of the clamping plate will be the same up and down, and the heat exchange fins will be kept clamped. Through the transmission of the transmission ring and the transmission belt, the sliding cylinders in each limiting member will also be kept at the same angle. When the sleeves on one side of the clamping plate should also rotate to the same angle, the insertion rods on the sleeves can be inserted into the insertion holes. According to the situation of the insertion rods inserted into the insertion holes, it can be detected whether the sleeves rotate in place and whether the clamping plate clamps the heat exchange fins comprehensively, and the sleeves can be reinforced, improving the sealing performance of the device during the heat exchange process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the limiting hole and the rotation rod of the present invention;

[0021] Figure 3 is a schematic diagram of the structure of the sleeve and the sliding cylinder of the present invention;

[0022] Figure 4 is a schematic diagram of the internal structure of the limiting member of the present invention;

[0023] Figure 5 is a schematic diagram of the heat exchange fin structure of the present invention;

[0024] Figure 6Schematic diagram of the structure of two adjacent heat exchange fins of the present invention;

[0025] Figure 7 Schematic diagram of the structure of the liquid storage layer of the present invention;

[0026] Figure 8 Schematic diagram of the structure of the diversion pipe of the present invention;

[0027] Figure 9 Schematic diagram of the internal structure of the diversion pipe of the present invention;

[0028] Figure 10 Schematic diagram of the structure of the pressure increasing tank of the present invention;

[0029] Figure 11 Schematic diagram of the fluid flow direction of the present invention.

[0030] In the figure: 1, end plate; 2, slide rail; 3, guide strip; 4, column; 5, connecting rod; 6, clamping plate; 7, roller; 8, annular groove; 9, water inlet; 10, water outlet; 11, limit hole; 12, positioning hole; 13, rotating rod; 14, limit ring; 15, positioning rod; 16, thread groove; 17, sleeve; 18, thread bar; 19, inserting rod; 20, sliding cylinder; 21, inserting hole; 22, transmission ring; 23, transmission belt; 24, limiting member; 25, heat exchange fin; 26, limiting groove; 27, liquid passing hole; 28, shunt groove; 29, shunt plate; 30, sealing strip; 31, sealing groove; 32, liquid storage layer; 33, frame; 34, limiting strip; 35, diversion pipe; 36, diversion groove; 37, pressure increasing pipe; 38, pressure increasing tank; 39, diversion plate; 40, clamping groove. Detailed implementation manners

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-11, the present invention provides a technical solution: a plate heat exchanger, including end plates 1, on which there are provided two water inlets 9 and two water outlets 10. On one side of the end plate 1, two connecting rods 5 are fixedly installed, and at one end of the two connecting rods 5, a column 4 is fixedly installed. A slide rail 2 is fixedly connected between the end plate 1 and the column 4. A clamping plate 6 is slidably installed on the two connecting rods 5. At the upper end of the clamping plate 6, two rollers 7 cooperating with the slide rail 2 are rotatably installed. Guide bars 3 are fixedly installed on both sides of the slide rail 2. Each roller 7 is provided with an annular groove 8 cooperating with the guide bar 3. Through the limitation of the clamping plate 6 by the connecting rod 5, the clamping plate 6 can slide along the connecting rod 5 to adjust the distance between the clamping plate 6 and the end plate 1. At the same time, through the cooperation of the roller 7 and the slide rail 2, and the cooperation of the annular groove 8 and the guide bar 3, the stability of the clamping plate 6 during sliding is improved, and the friction during the sliding of the clamping plate 6 is reduced.

[0033] There are several heat exchange fins 25 arranged between the end plate 1 and the clamping plate 6. At both the upper and lower ends of each heat exchange fin 25, there are limiting grooves 26 that cooperate with the connecting rod 5. At the four corners of each heat exchange fin 25, there are four liquid passing holes 27, and the liquid passing holes 27 correspond one by one to the water inlet 9 and the water outlet 10. On one side of each heat exchange fin 25, there is a sealing strip 30 fixedly installed for guiding the liquid, and on the other side, there is a sealing groove 31 that cooperates with the sealing strip 30. Between adjacent two heat exchange fins 25, a liquid storage layer 32 is formed by the sealing strip 30 and the sealing groove 31. Each liquid storage layer 32 allows liquid to enter and exit through two liquid passing holes 27 on one side of the heat exchange fin 25, and the liquid passing holes 27 for liquid inlet and outlet on adjacent two heat exchange fins 25 are arranged alternately. That is, the first heat exchange fin 25 uses the two right-side liquid passing holes 27 for liquid inlet and outlet, the second heat exchange fin 25 uses the two left-side liquid passing holes 27 for liquid inlet and outlet, and so on, alternating continuously. On one side of each heat exchange fin 25, there are several flow dividing plates 29 fixedly installed for dispersing the liquid flowing into the liquid storage layer 32, and the flow directions of the fluids in adjacent two liquid storage layers 32 are arranged in opposite directions. On each heat exchange fin 25, there are several flow dividing grooves 28, and each flow dividing groove 28 is arranged in a "person" shape. At the edge of each heat exchange fin 25, there is a frame 33 fixedly installed. On one side of each frame 33, there is a limiting strip 34 fixedly installed, and on the other side, there is a clamping groove 40 for limiting the limiting strip 34. The hot fluid enters from the water inlet 9 at the upper right. After passing through the upper right liquid passing hole 27 of the first heat exchange fin 25, a part of the fluid enters the liquid storage layer 32 between the first heat exchange fin 25 and the second heat exchange fin 25, and the other part of the fluid continues to flow backward. Due to the cooperation of the sealing strip 30 and the sealing groove 31, it cannot enter the liquid storage layer 32 formed by the second heat exchange fin 25 and the third heat exchange fin 25, and then it will continue to move and enter the liquid storage layer 32 formed by the third heat exchange fin 25 and the fourth heat exchange fin 25. The hot fluid entering the liquid storage layer 32 will be evenly distributed to the inside of the liquid storage layer 32 after being divided by the flow dividing plate 29. As the hot fluid continuously enters, the excess hot fluid will flow out through the liquid passing hole 27 at the lower right of the heat exchange fin 25 after being restricted by the sealing strip 30, and will finally be collected and flow out from the water outlet 10 at the lower right of the end plate 1. The cold fluid flows in from the water inlet 9 at the lower left of the end plate 1 and cannot enter the liquid storage layer 32 between the first heat exchange fin 25 and the second heat exchange fin 25 due to the limitation of the sealing strip 30. After continuing to flow, it will enter the liquid storage layer 32 formed by the second heat exchange fin 25 and the third heat exchange fin 25, and so on. After being divided by the flow dividing plate 29, the cold fluid will also be evenly distributed to the inside of the liquid storage layer 32 and finally be collected and flow out from the water outlet 10 at the upper left of the end plate 1. The cold fluid and the hot fluid flow alternately in adjacent liquid storage layers 32 for heat exchange. At the same time, the flow dividing grooves 28 on the heat exchange fins 25 increase the contact area between the fluid and the heat exchange fins 25, improving the heat exchange efficiency. And the flow direction of the hot fluid is from top to bottom, while the flow direction of the cold fluid is from bottom to top.The heat exchange efficiency between the hot and cold fluids is also improved.

[0034] A flow guide pipe 35 is fixedly installed in each water inlet 9. Each flow guide pipe 35 passes through the corresponding liquid passing hole 27, and a number of flow guide grooves 36 are arranged thereon. The flow guide grooves 36 correspond to the liquid storage layers 32 corresponding to the water inlets 9 one by one and are interconnected. A pressure increasing pipe 37 is fixedly installed in each flow guide pipe 35. The inlet of each pressure increasing pipe 37 is arranged in a funnel shape. A number of pressure increasing grooves 38 are arranged on each pressure increasing pipe 37. Each pressure increasing groove 38 is arranged in a hourglass shape, and the pressure increasing grooves 38 are arranged in a spiral pattern on the pressure increasing pipe 37. A number of flow guide plates 39 are fixedly installed on the inner wall at the inlet of each pressure increasing pipe 37. Each flow guide plate 39 is inclined and arranged in a spiral pattern on the inner wall of the pressure increasing pipe 37. After the hot and cold fluids enter the corresponding water inlets 9, they will first enter the pressure increasing pipes 37. Since the inlets of the pressure increasing pipes 37 are arranged in a funnel shape, the pressure of the fluid will increase after entering the pressure increasing pipes 37. At the same time, since the flow guide plates 39 are fixedly installed at the inlets of the pressure increasing pipes 37 and the flow guide plates 39 are inclined, the fluid will form a vortex in the pressure increasing pipes 37 after passing through the flow guide plates 39, further increasing the fluid pressure in the pressure increasing pipes 37. As the fluid continuously enters the pressure increasing pipes 37, the fluid in the pressure increasing pipes 37 will flow out through the pressure increasing grooves 38 thereon. Since the pressure increasing grooves 38 are arranged in a hourglass shape, the fluid will be squeezed by the inner wall of the pressure increasing grooves 38 when entering the pressure increasing grooves 38, and the pressure in the pressure increasing pipes 37 will make the outflow speed of the fluid faster, and make the fluid evenly discharged from each pressure increasing groove 38. After the fluid flows out of the pressure increasing grooves 38, it will diffuse along the inner wall of the pressure increasing grooves 38 into the flow guide pipes 35, making the pressure and flow rate of each section of fluid in the flow guide pipes 35 relatively balanced. The fluid then enters the corresponding liquid storage layers 32 through the flow guide grooves 36, making the fluid distribution in each liquid storage layer 32 relatively uniform and effectively reducing the uneven fluid distribution.

[0035] A number of limiting holes 11 are provided on both sides of the end plate 1 and the clamping plate 6. A rotating rod 13 is rotatably installed between every two corresponding limiting holes 11 in the front and rear. One end of each rotating rod 13 is fixedly installed with a limiting ring 14 that cooperates with the end plate 1. A positioning rod 15 is fixedly installed on each limiting ring 14. A number of positioning holes 12 for limiting the positioning rod 15 are provided on the end plate 1. The positioning holes 12 and the positioning rods 15 are in one-to-one correspondence. A threaded groove 16 is also provided on each rotating rod 13. A sleeve 17 is rotatably installed on each rotating rod 13. A threaded strip 18 that cooperates with the threaded groove 16 is fixedly installed on the inner wall of each sleeve 17. Limiting members 24 are provided on both the left and right sides of the clamping plate 6. A number of sliding cylinders 20 are rotatably installed on each limiting member 24. A transmission ring 22 is fixedly installed on the outer wall of each sliding cylinder 20. A transmission belt 23 for transmitting connection between the transmission rings 22 is provided in each limiting member 24. The sliding cylinders 20 and the sleeves 17 are in one-to-one correspondence. An insertion hole 21 is provided on each sliding cylinder 20. An insertion rod 19 that cooperates with the insertion hole 21 is fixedly installed on each sleeve 17. After the heat exchange fins 25 are installed in place, the limiting strip 34 on the frame 33 is inserted into the corresponding card slot 40, so that the adjacent heat exchange fins 25 can be accurately aligned, and the displacement of the heat exchange fins 25 during use can be reduced, preventing leakage during the use of the device. Then, the clamping plate 6 is pushed towards the end plate 1 to clamp the heat exchange fins 25, and the rotating rod 13 is sequentially passed through the limiting holes 11 on the end plate 1 and the clamping plate 6, so that the limiting ring 14 at the end of the rotating rod 13 abuts against one side of the end plate 1, and the positioning rod 15 on the limiting ring 14 is inserted into the corresponding positioning hole 12, making the rotating rod 13 fixed and unable to rotate. Then, the sleeve 17 is sequentially rotated and installed on the rotating rod 13. Through the cooperation of the threaded strip 18 and the threaded groove 16, the sleeve 17 is sleeved on the rotating rod 13, and one end abuts against the clamping plate 6. After the sleeve 17 is tightened, the clamping plate 6 will be fixed, and the heat exchange fins 25 will remain clamped. Then, the sliding cylinders 20 on the limiting member 24 are successively sleeved on the sleeve 17, and the insertion rod 19 on the sleeve 17 is inserted into the insertion hole 21 on the corresponding sliding cylinder 20. Since the rotating rod 13 is fixed, after the sleeve 17 is tightened, they will all be at the same rotation angle. After the sleeves 17 on both sides of the clamping plate 6 are at the same rotation angle, there will be no angular difference between the upper and lower sides of the clamping plate 6. The clamping forces on both sides of the clamping plate 6 will be the same up and down, and the heat exchange fins 25 will be kept clamped. Through the transmission of the transmission ring 22 and the transmission belt 23, the sliding cylinders 20 in each limiting member 24 will also all be at the same angle. When the sleeves 17 on one side of the clamping plate 6 also rotate to the same angle, the insertion rods 19 on the sleeves 17 can all be inserted into the insertion holes 21. According to the situation of the insertion rod 19 inserted into the insertion hole 21, it can be detected whether the sleeve 17 rotates in place and whether the clamping plate 6 clamps the heat exchange fins 25 comprehensively, and the sleeve 17 can be strengthened, improving the sealing performance of the device during the heat exchange process.

[0036] Specifically, first, select an appropriate number of heat exchange fins 25. Through the limitation of the limiting groove 26 by the connecting rod 5, install the heat exchange fins 25 in place, insert the limiting strip 34 on its frame 33 into the corresponding card slot 40, so that the adjacent heat exchange fins 25 can be accurately aligned, and the displacement of the heat exchange fins 25 during use can be reduced, preventing leakage during the use of the device. Then, push the clamping plate 6 towards the end plate 1 and clamp the heat exchange fins 25. Pass the rotating rod 13 through the limiting holes 11 on the end plate 1 and the clamping plate 6 in sequence, make the limiting ring 14 at the end of the rotating rod 13 abut against one side of the end plate 1, and insert the positioning rod 15 on the limiting ring 14 into the corresponding positioning hole 12, so that the rotating rod 13 is fixed and cannot rotate. Then, install the sleeves 17 on the rotating rod 13 one by one. Through the cooperation of the threaded strip 18 and the threaded groove 16, the sleeve 17 is sleeved on the rotating rod 13, and one end abuts against the clamping plate 6. After tightening the sleeve 17, the clamping plate 6 will be fixed, and the heat exchange fins 25 will remain clamped. Then, sleeved the sliding cylinders 20 on the limiting member 24 on the sleeves 17 one by one, and insert the insertion rods 19 on the sleeves 17 into the insertion holes 21 on the corresponding sliding cylinders 20. Since the rotating rod 13 is fixed, after the sleeves 17 are tightened, they will all be at the same rotation angle. After the sleeves 17 on both sides of the clamping plate 6 are at the same rotation angle, there will be no angular difference between the upper and lower sides of the clamping plate 6. The clamping forces on both sides of the clamping plate 6 will be the same up and down, and the heat exchange fins 25 will remain clamped. Through the transmission of the transmission ring 22 and the transmission belt 23, the sliding cylinders 20 in each limiting member 24 will also remain at the same angle. When the sleeves 17 on one side of the clamping plate 6 also rotate to the same angle, the insertion rods 19 on the sleeves 17 can all be inserted into the insertion holes 21. According to the situation of the insertion rods 19 inserted into the insertion holes 21, it can be detected whether the sleeves 17 rotate in place and whether the clamping plate 6 fully clamps the heat exchange fins 25, and the sleeves 17 can be strengthened, improving the sealing performance of the device during the heat exchange process. The hot fluid enters from the water inlet 9 in the upper right, and after passing through the liquid passing hole 27 in the upper right of the first heat exchange fin 25, a part of the fluid enters the liquid storage layer 32 between the first heat exchange fin 25 and the second heat exchange fin 25, and the other part of the fluid continues to flow backward, and through the cooperation of the sealing strip 30 and the sealing groove 31, it cannot enter the liquid storage layer 32 composed of the second heat exchange fin 25 and the third heat exchange fin 25. Then it will continue to move and enter the liquid storage layer 32 composed of the third heat exchange fin 25 and the fourth heat exchange fin 25. The hot fluid entering the liquid storage layer 32 will be evenly distributed to the inside of the liquid storage layer 32 after being shunted by the shunt plate 29. As the hot fluid continuously enters, the excess hot fluid will flow out from the liquid passing hole 27 in the lower right of the heat exchange fin 25 after being restricted by the sealing strip 30, and finally converge and flow out from the water outlet 10 in the lower right of the end plate 1. The cold fluid flows in from the water inlet 9 in the lower left of the end plate 1, and through the limitation of the sealing strip 30, it cannot enter the liquid storage layer 32 between the first heat exchange fin 25 and the second heat exchange fin 25, and will continue to flow and enter the liquid storage layer 32 composed of the second heat exchange fin 25 and the third heat exchange fin 25.And so on, after being shunted by the shunt plate 29, the cold fluid will also evenly flow into the interior of the liquid storage layer 32, and finally converge and flow out from the water outlet 10 at the upper left of the end plate 1. The cold fluid and the hot fluid flow alternately in adjacent liquid storage layers 32 for heat exchange. At the same time, the shunt grooves 28 on the heat exchange fins 25 increase the contact area between the fluid and the heat exchange fins 25, improving the heat exchange efficiency. And the flow direction of the hot fluid is from top to bottom, while the flow direction of the cold fluid is from bottom to top, which also improves the heat exchange efficiency between the hot and cold fluids. After the hot and cold fluids enter the corresponding water inlets 9, they will first enter the pressure increasing pipe 37. Since the inlets of the pressure increasing pipe 37 are all set in a funnel shape, the pressure of the fluid will increase after entering the pressure increasing pipe 37. At the same time, since a flow guide plate 39 is fixedly installed at the inlet of the pressure increasing pipe 37, and the flow guide plates 39 are all inclined, the fluid will form a vortex in the pressure increasing pipe 37 after passing through the flow guide plate 39, further increasing the fluid pressure in the pressure increasing pipe 37. As the fluid continuously enters the pressure increasing pipe 37, the fluid in the pressure increasing pipe 37 will flow out through the pressure increasing grooves 38 on it. Since the pressure increasing grooves 38 are set in a hourglass shape, the fluid will be squeezed by the inner wall of the pressure increasing groove 38 when entering the pressure increasing groove 38, and the pressure in the pressure increasing pipe 37 will make the fluid flow out faster, and make the fluid evenly discharged from each pressure increasing groove 38. After the fluid flows out of the pressure increasing groove 38, it will diffuse along the inner wall of the pressure increasing groove 38 into the flow guide pipe 35, making the pressure and flow velocity of each section of fluid in the flow guide pipe 35 relatively balanced. The fluid then enters the corresponding liquid storage layer 32 through the flow guide groove 36, making the fluid distribution in each liquid storage layer 32 relatively uniform, effectively reducing the situation of uneven fluid distribution.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plate heat exchanger, comprising an end plate (1), characterized in that: The end plate (1) is provided with two water inlets (9) and two water outlets (10), one side of the end plate (1) is fixedly mounted with two connecting rods (5), one end of the two connecting rods (5) is fixedly mounted with a column (4), the two connecting rods (5) are slidably mounted with a clamping plate (6), a plurality of limiting holes (11) are provided on both sides of the end plate (1) and the clamping plate (6), a rotating rod (13) is rotatably mounted between each two corresponding limiting holes (11), one end of each rotating rod (13) is fixedly mounted with a limiting ring (14) matching with the end plate (1), each rotating rod (13) is also provided with a thread groove (16), each rotating rod (13) is rotatably mounted with a sleeve (17), and a thread strip (18) matching with the thread groove (16) is fixedly mounted on the inner wall of each sleeve (17); A plurality of heat exchange plates (25) are arranged between the end plate (1) and the clamping plate (6), and each of the heat exchange plates (25) is provided with a limit groove (26) matched with the connecting rod (5) at both ends, and each of the heat exchange plates (25) is provided with four liquid holes (27) at four corners, and the liquid holes (27) correspond to the water inlet (9) and the water outlet (10) one by one. A sealing strip (30) for guiding the liquid is fixedly installed on one side of each heat exchange plate (25), and a sealing groove (31) matched with the sealing strip (30) is provided on the other side. A liquid storage layer (32) is formed between two adjacent heat exchange plates (25) through the sealing strip (30). Each liquid storage layer (32) is provided with a sealing strip (31) for guiding the liquid. The layers (32) are connected to the heat exchange plate (25) for liquid to enter and exit through two liquid holes (27) on one side of the heat exchange plate (25), and the liquid holes (27) for liquid to enter and exit on two adjacent heat exchange plates (25) are arranged alternately. A guide pipe (35) is fixedly installed in each water inlet (9), and each guide pipe (35) passes through the corresponding liquid hole (27) and is provided with a plurality of guide grooves (36). The guide grooves (36) correspond to the liquid storage layers (32) corresponding to the water inlet (9) one by one and are interconnected. A boosting pipe (37) is fixedly installed in each guide pipe (35), and each boosting pipe (37) is provided with a plurality of boosting grooves (38).

2. A plate heat exchanger according to claim 1, characterized in that: The inlet of each boosting pipe (37) is arranged in a funnel shape, and each boosting groove (38) is arranged in an hourglass shape. The boosting grooves (38) are arranged in a spiral on the boosting pipe (37).

3. A plate heat exchanger according to claim 2, characterized in that: A plurality of guide plates (39) are fixedly mounted on the inner wall at the entrance of each boosting pipe (37), and each guide plate (39) is arranged in an inclined manner and arranged in a spiral arrangement on the inner wall of the boosting pipe (37).

4. A plate heat exchanger according to claim 1, characterized in that: The clamping plate (6) is provided with a limit piece (24) on both sides, and a plurality of slides (20) are rotatably mounted on each of the limit pieces (24). A transmission ring (22) is fixedly mounted on the outer wall of each of the slides (20). A transmission belt (23) for connecting the transmission rings (22) is arranged in each of the limit pieces (24). The slides (20) correspond to the sleeves (17) one by one, and a socket (21) is arranged on each of the slides (20). An insertion rod (19) matching the socket (21) is fixedly mounted on each of the sleeves (17).

5. A plate heat exchanger according to claim 1, characterized in that: A positioning rod (15) is fixedly mounted on each of the limiting rings (14), and a plurality of positioning holes (12) for limiting the positioning rod (15) are provided on the end plate (1), and the positioning holes (12) correspond one to one with the positioning rods (15).

6. A plate heat exchanger according to claim 1, characterized in that: A frame (33) is fixedly mounted on the edge of each heat exchange plate (25); a limit strip (34) is fixedly mounted on one side of each frame (33); and a slot (40) for limiting the limit strip (34) is provided on the other side.

7. A plate heat exchanger according to claim 6, characterized in that: A plurality of diversion grooves (28) are arranged on each of the heat exchange plates (25), and each of the diversion grooves (28) is arranged in a herringbone shape.

8. A plate heat exchanger according to claim 7, characterized in that: A plurality of flow distribution plates (29) for dispersing the liquid flowing into the liquid storage layer (32) are fixedly mounted on one side of each of the heat exchange plates (25).

9. A plate heat exchanger according to claim 8, characterized in that: The flow directions of the fluids in two adjacent liquid storage layers (32) are arranged in opposite directions.

10. The plate heat exchanger according to claim 1, characterized in that: A slide rail (2) is fixedly connected between the end plate (1) and the column (4); two rollers (7) matching with the slide rail (2) are rotatably mounted on the upper end of the clamping plate (6); guide bars (3) are fixedly mounted on both sides of the slide rail (2); and each of the rollers (7) is provided with an annular groove (8) matching with the guide bar (3).

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