Welded wide channel heat exchanger

Abstract

The present application relates to heat exchange equipment technical field, specifically to a kind of welded wide channel heat exchanger.A kind of welded wide channel heat exchanger includes support, filter cartridge and heat exchange mechanism.Heat exchange mechanism includes multiple heat exchange plates, and flow channel is formed between adjacent two heat exchange plates, and multiple flow channels include multiple first channels and multiple second channels arranged alternately each other.Due to structural features, first channel not covered by filter cartridge is more prone to clogging in use.This design brings maintenance advantage instead, it can help quickly and accurately locate clogging area.When cleaning or repairing, only need to disassemble heat exchange plate not covered by filter cartridge, other heat exchange plates do not need to remove, so as to significantly improve maintenance efficiency.The present application provides a kind of welded wide channel heat exchanger to solve the problem of low maintenance efficiency of existing wide channel welded plate heat exchanger in actual use due to the inability to locate specific clogging position, must be overall diswashing.

Description

Technical Field

[0001] This invention relates to the field of heat exchange equipment technology, and more specifically to a welded wide-channel heat exchanger. Background Technology

[0002] A welded wide-channel heat exchanger is an industrial heat exchange device designed based on the plate heat exchange principle. Its core feature lies in the use of welding technology to seal and form inter-plate channels with a large flow cross-section. This type of heat exchanger typically consists of multiple parallel metal plates welded together around their perimeter to form a single plate bundle, with channels for medium flow formed between adjacent plates. Its basic working principle is to allow two fluids at different temperatures (such as a heat source and a cold source) to flow alternately through these adjacent channels, achieving efficient heat transfer through the plates, thereby achieving process objectives such as heating, cooling, or waste heat recovery.

[0003] Wide-channel heat exchangers are primarily used in industries such as chemical, metallurgical, power, and environmental protection to handle high-viscosity fluids containing solid particles or prone to fouling. Due to their wide flow channels, they are less prone to clogging and have a higher tolerance for impurities compared to traditional narrow-channel plate heat exchangers. Their core advantage lies in their strong anti-clogging capability and ability to maintain high heat exchange performance, typically eliminating the need for fluid filtration. However, during prolonged operation, the flow channels may still gradually become clogged due to the accumulation of impurities.

[0004] For example, utility model patent CN223470536U provides a high-efficiency wide-channel welded plate heat exchanger. It utilizes a structure including a bracket, plate heat exchanger, second rotating rod, slide rail, vertical plate, first rotating rod, and groove to achieve the opening and closing functions of the heat exchange plates, facilitating maintenance. However, in practical use, this structure still has significant limitations: because it cannot pinpoint the exact location of the blockage, once a blockage occurs, the entire plate heat exchanger module must be disassembled and cleaned. This is not only cumbersome but also significantly increases downtime and maintenance costs, affecting the overall efficiency of cleaning and maintenance. Summary of the Invention

[0005] This invention provides a welded wide-channel heat exchanger to solve the problem of low maintenance efficiency caused by the inability to locate specific blockages and the need for complete disassembly and cleaning in the actual use of existing wide-channel welded plate heat exchangers.

[0006] The present invention provides a welded wide-channel heat exchanger with the following technical solution: A welded wide-channel heat exchanger includes a support, a filter cartridge, and a heat exchange mechanism. The heat exchange mechanism includes multiple heat exchange plates distributed along a first direction, which is horizontal, and the heat exchange plates are vertically mounted on the support.

[0007] Each heat exchanger plate has a heat source inlet and a cold source inlet at the top, and a heat source outlet and a cold source outlet at the bottom. Multiple heat source inlets are interconnected to form a heat source inlet channel, and multiple cold source inlets are interconnected to form a cold source inlet channel. Multiple heat source outlets are interconnected to form a heat source outlet channel, and multiple cold source outlets are interconnected to form a cold source outlet channel.

[0008] A flow channel is formed between two adjacent heat exchange plates, and the multiple flow channels include multiple first channels and multiple second channels arranged alternately. The first channel connects the heat source inlet channel and the heat source outlet channel, and the second channel connects the cold source outlet channel and the cold source inlet channel.

[0009] The filter cartridge is arranged along a first direction and is slidably disposed within the heat source inlet channel. Both ends of the filter cartridge are connected to the heat source inlet channel, and are respectively the first end and the second end. Filter holes are formed on the peripheral wall of the filter cartridge.

[0010] The heat source flows into the filter cartridge from the first end and exits from the second end and through the filter holes, entering multiple first channels. The peripheral wall of the filter cartridge covers the upper inlet of the first channels, while the upper inlets of the remaining first channels are exposed outside the second end of the filter cartridge. When the exposed first channel becomes blocked, the pressure in the portion of the heat source channel not covered by the filter cartridge increases, pushing the filter cartridge to move and increasing the number of previously covered, unblocked first channels exposed.

[0011] Furthermore, the two sides of the support along the first direction are respectively the first side and the second side, the first end of the filter cartridge is close to the first side of the support, and the second end of the filter cartridge is close to the second side of the support.

[0012] The support frame is equipped with a connecting mechanism, which is arranged sequentially with the heat exchange mechanism along the direction from the first side to the second side of the support frame. The connecting mechanism includes an inlet pipe and an outlet pipe distributed vertically, both of which are arranged along the first direction. The inlet pipe is connected to the heat source channel, and the outlet pipe is connected to the heat source channel.

[0013] Furthermore, a welded wide-channel heat exchanger also includes a limiting mechanism disposed inside the liquid inlet pipe. The limiting mechanism includes multiple limiting components, which are distributed sequentially along a first direction.

[0014] Each limiting assembly includes a spring and a limiting block. One side of the spring is fixedly mounted on the inner circumferential wall of the liquid inlet pipe. The limiting block is fixedly mounted on the other side of the spring, and an inclined surface is formed on the side of the limiting block away from the spring, which abuts against the first end of the filter cartridge. When the pressure in the heat source channel increases to a level where the movement of the filter cartridge is sufficient to overcome the elastic force of the spring, the filter cartridge pushes the limiting block to move closer to the spring.

[0015] Furthermore, a welded wide-channel heat exchanger also includes an adjustment mechanism, which comprises a connecting assembly and a flow equalization tube.

[0016] The flow equalization tube is arranged along the first direction and slidably disposed within the heat source channel. The flow equalization tube has a third end and a fourth end, respectively. The fourth end of the flow equalization tube is close to the second side of the support, and the fourth end of the flow equalization tube is vertically aligned with the second end of the filter cartridge. Both the third and fourth ends of the flow equalization tube are connected to the heat source channel. Along the direction from the fourth end to the third end of the flow equalization tube, the diameter of the flow equalization tube gradually decreases.

[0017] The flow equalization tube divides the internal space of the heat source channel into a first space and a second space. The first space corresponds to the first channel that is not covered by the peripheral wall of the filter cartridge.

[0018] The filter cartridge moves synchronously with the flow equalization tube via a connecting assembly. During operation, the heat source flows from the first channel, which is not covered by the peripheral wall of the filter cartridge, to the first space, and then through the flow equalization tube to the second space. The flow equalization tube is used to increase the flow resistance of the heat source from the first space to the second space.

[0019] Furthermore, the connecting assembly also includes a U-shaped connecting bracket, which is located on the second side of the support and can slide along the first direction. One end of the U-shaped connecting bracket is located in the heat source inlet channel and is connected to the second end of the filter cartridge. The other end of the U-shaped connecting bracket is located in the heat source outlet channel and is connected to the fourth end of the flow equalization tube.

[0020] Furthermore, the support is provided with a first clamping plate, a second clamping plate, and a third clamping plate. The first clamping plate, the second clamping plate, and the third clamping plate are distributed sequentially from the first side to the second side of the support. Part of the heat exchange plates are located between the first clamping plate and the second clamping plate, and another part of the heat exchange plates are located between the second clamping plate and the third clamping plate.

[0021] Furthermore, the bracket is equipped with multiple locking screws distributed circumferentially along the bracket. Each locking screw is positioned along a first direction and sequentially connects to a first pressure plate, a second pressure plate, and a third pressure plate, and is locked in stages by two nuts. Specifically, the first nut locks the first pressure plate and the second pressure plate in place, and the second nut locks the second pressure plate and the third pressure plate in place.

[0022] Furthermore, among the multiple heat exchange plates located between the first and second clamping plates, adjacent heat exchange plates are fixedly connected. Among the multiple heat exchange plates located between the second and third clamping plates, adjacent heat exchange plates abut against each other. The multiple heat exchange plates located between the second and third clamping plates are detachable.

[0023] Furthermore, the multiple heat exchange plates include multiple first plates and multiple second plates arranged alternately. Along the direction from the first side to the second side of the support, the two sides of the first plate are the third side and the fourth side, respectively, and the two sides of the second plate are the fifth side and the sixth side, respectively.

[0024] The third side of the first plate is located within the first channel, and a first sealing strip is provided on the third side of the first plate. The first sealing strip surrounds the heat source inlet channel, the heat source outlet channel, and the first channel. The cold source inlet channel and the cold source outlet channel are located outside the first area, and the first sealing strip is used to prevent the cold source outlet channel, the cold source inlet channel, and the first channel from communicating.

[0025] The fifth side of the second plate is located within the second channel. A second sealing strip is provided on the fifth side of the second plate. The second sealing strip surrounds the cold source outlet channel, the cold source inlet channel, and the second channel, forming a sealed second area, allowing the cold source outlet channel, the cold source inlet channel, and the second channel to communicate with each other. The heat source channel and the heat source outlet channel are located outside the second area. The second sealing strip is used to prevent the heat source inlet channel, the heat source outlet channel, and the second channel from communicating.

[0026] Furthermore, the U-shaped connecting frame and the third clamping plate are slidably connected, and a sealing rubber is provided at the sliding connection.

[0027] The beneficial effects of this invention are as follows: In this welded wide-channel heat exchanger, the heat source, through the provided heat exchange mechanism, enters the heat source channel via the liquid inlet pipe, initially entering the interior of the filter cartridge from the first end. Subsequently, a portion of the heat source is discharged outwards through the filter holes on the filter cartridge wall, entering the first channel covered by the filter cartridge. The remaining portion of the heat source is discharged directly from the second end of the filter cartridge, entering the first channel not covered by the filter cartridge.

[0028] Due to its structural characteristics, the first channel not covered by the filter cartridge is more prone to clogging during use. This design, however, offers a maintenance advantage: it helps to quickly and accurately locate the clogged area. During cleaning or maintenance, only the heat exchanger plate not covered by the filter cartridge needs to be removed; the other heat exchanger plates do not need to be removed, reducing the number of heat exchanger plates that need to be disassembled and cleaned each time, thus significantly improving maintenance efficiency.

[0029] When the first exposed channel becomes blocked, the pressure inside the heat source channel increases and pushes the filter cartridge to move, increasing the number of previously covered but unblocked first channel inlets exposed. This effectively counteracts the uneven flow caused by local blockage, ensuring that the heat source distribution is restored to uniformity and stability. At the same time, it avoids local high pressure and stress concentration, which helps to extend the service life of the filter cartridge and related components. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of a welded wide-channel heat exchanger provided in an embodiment of the present invention; Figure 2 A side view of a welded wide-channel heat exchanger provided in an embodiment of the present invention; Figure 3 for Figure 2 Sectional view along the middle AA direction; Figure 4 An exploded view of a welded wide-channel heat exchanger provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a heat exchange plate in a welded wide-channel heat exchanger provided in an embodiment of the present invention; Figure 6 for Figure 3 Enlarged view of point B in the middle.

[0032] In the diagram: 100, bracket; 101, first clamping plate; 102, second clamping plate; 103, U-shaped connecting frame; 104, liquid inlet pipe; 1041, mounting groove; 105, liquid outlet pipe; 106, third clamping plate; 107, flow equalization pipe; 108, filter cartridge; 109, cold source outlet channel; 110, cold source inlet channel; 111, locking screw; 120, spring; 121, limiting block; 130, first sealing strip; 140, second sealing strip; 201, heat source inlet channel; 202, heat source outlet channel; 301, heat exchange plate. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Reference Figures 1 to 6 As shown in the figure, an embodiment of the present invention provides a welded wide-channel heat exchanger, including a support 100, a filter cartridge 108, and a heat exchange mechanism. The heat exchange mechanism includes a plurality of heat exchange plates 301 distributed along a first direction, which is a horizontal direction, and the heat exchange plates 301 are vertically arranged on the support 100.

[0035] Each heat exchange plate 301 has a heat source inlet and a cold source inlet at the top, and a heat source outlet and a cold source outlet at the bottom. Multiple heat source inlets are interconnected to form a heat source inlet channel 201, and multiple cold source inlets are interconnected to form a cold source inlet channel 110. Multiple heat source outlets are interconnected to form a heat source outlet channel 202, and multiple cold source outlets are interconnected to form a cold source outlet channel 109.

[0036] A flow channel is formed between two adjacent heat exchange plates 301. The multiple flow channels include multiple first channels and multiple second channels arranged alternately. The first channel connects the heat source inlet channel 201 and the heat source outlet channel 202, and the second channel connects the cold source outlet channel 109 and the cold source inlet channel 110.

[0037] The filter cartridge 108 is arranged along the first direction and is slidably disposed within the heat source inlet channel 201. Both ends of the filter cartridge 108 are connected to the heat source inlet channel 201, and are respectively the first end and the second end. Filter holes are provided on the peripheral wall of the filter cartridge 108.

[0038] The heat source flows into the filter cartridge 108 from the first end and exits from the second end and filter holes into multiple first channels. The peripheral wall of the filter cartridge 108 covers the upper inlet of the first channel, while the upper inlets of the remaining first channels are exposed outside the second end of the filter cartridge 108. When the exposed first channel becomes blocked, the pressure in the portion of the heat source channel 201 not covered by the filter cartridge 108 increases, pushing the filter cartridge 108 to move. This increases the number of previously covered but unblocked first channels exposed, effectively offsetting the uneven flow caused by local blockage, ensuring that the heat source distribution is restored to uniformity and stability, while avoiding local high pressure and stress concentration, thus helping to extend the service life of the filter cartridge 108 and related components.

[0039] The filter cartridge 108 has thickened walls at both ends so that when the pressure in the area of ​​the heat source channel 201 not covered by the filter cartridge 108 increases, the filter cartridge 108 can be moved.

[0040] The heat source enters the heat source channel 201 through the liquid inlet pipe 104, first entering the interior of the filter cartridge 108 from the first end. Subsequently, a portion of the heat source is discharged outward through the filter holes on the wall of the filter cartridge 108 and enters the first channel covered by the filter cartridge 108. The other portion of the heat source is discharged directly from the second end of the filter cartridge 108 and enters the first channel not covered by the filter cartridge 108.

[0041] Due to its structural characteristics, the first channel not covered by the filter cartridge 108 is more prone to clogging during use. This design, however, offers a maintenance advantage: it helps to quickly and accurately locate the clogged area. During cleaning or maintenance, only the heat exchange plate 301 not covered by the filter cartridge 108 needs to be removed; the other heat exchange plates 301 do not need to be removed, thus significantly improving maintenance efficiency.

[0042] In this embodiment, the two sides of the support 100 along the first direction are the first side and the second side, the first end of the filter cartridge 108 is close to the first side of the support 100, and the second end of the filter cartridge 108 is close to the second side of the support 100.

[0043] A connecting mechanism is provided on the support 100, and the connecting mechanism and the heat exchange mechanism are distributed sequentially from the first side to the second side of the support 100. The connecting mechanism includes an inlet pipe 104 and an outlet pipe 105 distributed vertically. Both the inlet pipe 104 and the outlet pipe 105 are arranged along the first direction. The inlet pipe 104 is connected to the heat source inlet channel 201, and the outlet pipe 105 is connected to the heat source outlet channel 202.

[0044] In this embodiment, a plurality of mounting grooves 1041 are provided on the inner peripheral wall of the liquid inlet pipe 104, and the plurality of mounting grooves 1041 are distributed sequentially along the first direction.

[0045] A welded wide-channel heat exchanger also includes a limiting mechanism, which is disposed in the liquid inlet pipe 104. The limiting mechanism includes multiple limiting components, each of which is disposed in an installation groove 1041.

[0046] Each limiting component includes a spring plate 120 and a limiting block 121. One side of the spring plate 120 is fixedly disposed in the mounting groove 1041, and the limiting block 121 is fixedly disposed on the other side of the spring plate 120. The limiting block 121 has an inclined surface on the side away from the spring plate 120. Along the direction from the second side to the first side of the bracket 100, the inclined surface gradually approaches the axis of the filter cartridge 108. The inclined surface abuts against the first end of the filter cartridge 108. When the pressure in the heat source channel 201 increases to the point that the movement of the filter cartridge 108 is sufficient to overcome the elastic force of the spring plate 120, the filter cartridge 108 pushes the limiting block 121 to move closer to the spring plate 120.

[0047] A welded wide-channel heat exchanger further includes an adjustment mechanism, which comprises a connecting assembly and a flow equalization tube 107. The flow equalization tube 107 is arranged along a first direction and slidably disposed within a heat source channel 202. The two ends of the flow equalization tube 107 are a third end and a fourth end, respectively. The third end of the flow equalization tube 107 is close to a first side of a support 100. The fourth end of the flow equalization tube 107 is close to a second side of the support 100, and the fourth end of the flow equalization tube 107 is vertically aligned with the second end of a filter cartridge 108. Both the third and fourth ends of the flow equalization tube 107 are connected to the heat source channel 202. Along the direction from the fourth end to the third end of the flow equalization tube 107, the diameter of the flow equalization tube 107 gradually decreases.

[0048] The flow equalization pipe 107 divides the internal space of the heat source channel 202 into a first space and a second space, which are distributed sequentially from the first side to the second side of the support 100. The first space corresponds to the first channel that is not covered by the peripheral wall of the filter cartridge 108.

[0049] The filter cartridge 108 moves synchronously with the flow equalization tube 107 via a connecting assembly. During operation, the heat source flows from the first channel (not covered by the peripheral wall of the filter cartridge 108) to the first space, and then through the flow equalization tube 107 to the second space. The flow equalization tube 107 increases the flow resistance of the heat source from the first space to the second space. This is because when the heat source enters the first channel covered by the filter cartridge 108, it experiences natural resistance due to the filter cartridge 108's obstruction. However, the resistance is lower when entering the uncovered first channel. By artificially increasing the flow resistance of the uncovered first channel, the flow equalization tube 107 ensures the overall uniformity of flow in all first channels.

[0050] In this embodiment, the connecting assembly further includes a U-shaped connecting bracket 103, which is located on the second side of the support 100 and can slide along the first direction. One end of the U-shaped connecting bracket 103 is located in the heat source inlet channel 201 and is connected to the second end of the filter cartridge 108. The other end of the U-shaped connecting bracket 103 is located in the heat source outlet channel 202 and is connected to the fourth end of the flow equalization pipe 107. When the filter cartridge 108 moves, the flow equalization pipe 107 moves synchronously through the U-shaped connecting bracket 103, so that the first space and the uncovered first channel always correspond.

[0051] In this embodiment, the support 100 is provided with a first pressing plate 101, a second pressing plate 102, and a third pressing plate 106. The first pressing plate 101, the second pressing plate 102, and the third pressing plate 106 are distributed sequentially along the direction from the first side to the second side of the support 100. Part of the heat exchange plate 301 is located between the first pressing plate 101 and the second pressing plate 102, and another part of the heat exchange plate 301 is located between the second pressing plate 102 and the third pressing plate 106.

[0052] Both the first pressing plate 101 and the second pressing plate 102 have multiple connecting holes, which correspond one-to-one with and are connected to the heat source inlet channel 201, the heat source outlet channel 202, the cold source outlet channel 109, and the cold source inlet channel 110.

[0053] Of the heat exchange plates 301 located between the second pressing plate 102 and the third pressing plate 106, only a portion is covered by the filter cartridge 108, while the rest are uncovered. However, all the heat exchange plates 301 located between the first pressing plate 101 and the second pressing plate 102 are covered by the filter cartridge 108.

[0054] When the first end of the filter cartridge 108 moves past the limiting assembly furthest from the second side of the support 100, all the first channels between the second clamping plate 102 and the third clamping plate 106 are exposed outside the second end of the filter cartridge 108.

[0055] In this embodiment, the bracket 100 is provided with a plurality of locking screws 111, which are distributed circumferentially along the bracket 100. Each locking screw 111 is arranged along a first direction and is sequentially connected to a first pressing plate 101, a second pressing plate 102, and a third pressing plate 106, and is locked in stages by two nuts. Specifically, the first nut locks the first pressing plate 101 and the second pressing plate 102 in place, and the second nut locks the second pressing plate 102 and the third pressing plate 106 in place.

[0056] In this embodiment, among the plurality of heat exchange plates 301 located between the first pressing plate 101 and the second pressing plate 102, two adjacent heat exchange plates 301 are fixedly connected by welding.

[0057] Among the multiple heat exchange plates 301 located between the second clamping plate 102 and the third clamping plate 106, adjacent heat exchange plates 301 abut against each other. The multiple heat exchange plates 301 located between the second clamping plate 102 and the third clamping plate 106 are removable. During cleaning or maintenance, only the corresponding heat exchange plate 301 between the second clamping plate 102 and the third clamping plate 106 needs to be removed, without disassembling the entire assembly, thus significantly improving maintenance efficiency. Furthermore, the multiple heat exchange plates 301 located between the second clamping plate 102 and the third clamping plate 106 are made of wear-resistant material, making them less prone to damage during disassembly. Therefore, only a portion of the heat exchange plates 301 are made of wear-resistant material, resulting in lower overall costs.

[0058] In this embodiment, the plurality of heat exchange plates 301 include a plurality of first plates and a plurality of second plates arranged alternately. Along the direction from the first side to the second side of the support 100, the two sides of the first plate are the third side and the fourth side, respectively, and the two sides of the second plate are the fifth side and the sixth side, respectively.

[0059] The third side of the first plate is located within the first channel. A first sealing strip 130 is provided on the third side of the first plate. The first sealing strip 130 surrounds the heat source inlet channel 201, the heat source outlet channel 202, and the first channel, forming a sealed first area, allowing the heat source inlet channel 201, the heat source outlet channel 202, and the first channel to communicate with each other. The cold source inlet channel 110 and the cold source outlet channel 109 are located outside the first area, and the first sealing strip 130 is used to prevent the cold source outlet channel 109 and the cold source inlet channel 110 from communicating with the first channel.

[0060] The fifth side of the second plate is located within the second channel. A second sealing strip 140 is provided on the fifth side of the second plate. The second sealing strip 140 surrounds the cold source outlet channel 109, the cold source inlet channel 110, and the second channel, forming a sealed second area, allowing the cold source outlet channel 109, the cold source inlet channel 110, and the second channel to communicate with each other. The heat source inlet channel 201 and the heat source outlet channel 202 are located outside the second area, and the second sealing strip 140 is used to prevent the heat source inlet channel 201 and the heat source outlet channel 202 from communicating with the second channel.

[0061] In this embodiment, the U-shaped connecting frame 103 and the third pressing plate 106 are slidably connected, and a sealing rubber ring is provided at the sliding connection.

[0062] Working process: The heat source is introduced into the heat source channel 201 through the liquid inlet pipe 104, and first enters the interior of the filter cartridge 108 from the first end. Subsequently, part of the heat source is discharged outward through the filter holes on the wall of the filter cartridge 108 and enters the first channel covered by the filter cartridge 108. The other part of the heat source is discharged directly from the second end of the filter cartridge 108 and enters the first channel not covered by the filter cartridge 108.

[0063] Due to its structural characteristics, the first channel not covered by the filter cartridge 108 is more prone to clogging during use. This design, however, offers a maintenance advantage: it helps to quickly and accurately locate clogged areas. During cleaning or maintenance, only the corresponding heat exchange plate 301 between the second and third clamping plates 102 needs to be removed; the entire assembly does not need to be disassembled, reducing the number of heat exchange plates 301 that need to be removed at one time, thus significantly improving maintenance efficiency.

[0064] When the first channel in the area not covered by the filter cartridge 108 is blocked, the pressure in the portion of the heat source channel 201 not covered by the filter cartridge 108 will increase. When this pressure increases to a level sufficient to overcome the elastic force of the spring 120, the filter cartridge 108 will be pushed past the limit block 121 and move along the direction from the second side to the first side of the bracket 100. At this time, the number of first channels in the area not covered by the filter cartridge 108 between the second pressing plate 102 and the third pressing plate 106 increases, thereby effectively offsetting the uneven flow caused by local blockage, ensuring that the heat source distribution is restored to uniformity and stability, while avoiding local high pressure and stress concentration, which helps to extend the service life of the filter cartridge 108 and related components.

[0065] When the filter cartridge 108 moves past the limiting assembly furthest from the second side of the support 100, it indicates that all the first channels between the second clamping plate 102 and the third clamping plate 106 are exposed outside the filter cartridge 108. At this point, the machine needs to be stopped for maintenance, the third clamping plate 106 needs to be removed, and the heat exchange plate 301 between the second clamping plate 102 and the third clamping plate 106 needs to be removed and cleaned.

[0066] Heat sources flowing out of the first channel, which is not covered by the filter cartridge 108, first flow into the first space, and then into the second space via the flow equalization pipe 107. This design aims to increase the resistance of this portion of the heat source outflow. This is because when the heat source enters the first channel covered by the filter cartridge 108, it experiences natural resistance due to the obstruction of the filter cartridge 108. However, the resistance is smaller when entering the uncovered first channel. By increasing the flow resistance of the uncovered first channel, the flow equalization pipe 107 ensures the overall uniformity of flow in all first channels.

[0067] The cold source enters the cold source inlet channel 110, and is then distributed to each of the second channels. After heat exchange is completed between multiple heat exchange plates 301, the cold source flows into the cold source outlet channel 109 and is discharged outward.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welded wide-channel heat exchanger, characterized in that: It includes a support frame, a filter cartridge, and a heat exchange mechanism; the heat exchange mechanism includes multiple heat exchange plates distributed along a first direction, which is a horizontal direction, and the heat exchange plates are vertically mounted on the support frame; Each heat exchange plate has a heat source inlet and a cold source inlet at the top, and a heat source outlet and a cold source outlet at the bottom; multiple heat source inlets are interconnected to form a heat source inlet channel, multiple cold source inlets are interconnected to form a cold source inlet channel; multiple heat source outlets are interconnected to form a heat source outlet channel, and multiple cold source outlets are interconnected to form a cold source outlet channel. A flow channel is formed between two adjacent heat exchange plates. The multiple flow channels include multiple first channels and multiple second channels arranged alternately. The first channel connects the heat source inlet channel and the heat source outlet channel, and the second channel connects the cold source outlet channel and the cold source inlet channel. The filter cartridge is arranged along the first direction and is slidably disposed in the heat source channel; both ends of the filter cartridge are connected to the heat source channel, and are respectively the first end and the second end; filter holes are provided on the peripheral wall of the filter cartridge. The heat source flows into the filter cartridge from the first end and flows out from the second end of the filter cartridge and the filter holes before entering multiple first channels; the peripheral wall of the filter cartridge covers part of the upper inlet of the first channel, and the upper inlet of the remaining first channels is exposed outside the second end of the filter cartridge. When the first exposed channel becomes blocked, the pressure in the portion of the heat source channel not covered by the filter cartridge increases and pushes the filter cartridge to move, thus increasing the number of previously covered but unblocked first channels exposed.

2. The welded wide-channel heat exchanger according to claim 1, characterized in that: The support has a first side and a second side on both sides along the first direction, with the first end of the filter cartridge close to the first side of the support and the second end of the filter cartridge close to the second side of the support. The support is equipped with a connecting mechanism, and the connecting mechanism and the heat exchange mechanism are distributed sequentially from the first side to the second side of the support. The connecting mechanism includes an inlet pipe and an outlet pipe distributed vertically. Both the inlet pipe and the outlet pipe are arranged along the first direction. The inlet pipe is connected to the heat source channel, and the outlet pipe is connected to the heat source channel.

3. A welded wide-channel heat exchanger according to claim 2, characterized in that: It also includes a limiting mechanism, which is disposed inside the liquid inlet pipe. The limiting mechanism includes multiple limiting components, which are distributed sequentially along the first direction. Each limiting component includes a spring and a limiting block. One side of the spring is fixedly mounted on the inner circumferential wall of the liquid inlet pipe. The limiting block is fixedly mounted on the other side of the spring. An inclined surface is provided on the side of the limiting block away from the spring, and the inclined surface abuts against the first end of the filter cartridge. When the pressure in the heat source channel rises to the point that the movement of the filter cartridge is sufficient to overcome the elastic force of the spring, the filter cartridge pushes the limiting block to move closer to the spring.

4. A welded wide-channel heat exchanger according to claim 2, characterized in that: It also includes a regulating mechanism, which comprises a connection component and a flow equalization tube; The flow equalization tube is arranged along the first direction and is slidably disposed within the heat source channel; The two ends of the flow equalization tube are the third end and the fourth end, respectively; The fourth end of the flow equalization tube is close to the second side of the support, and the fourth end of the flow equalization tube and the second end of the filter cartridge are aligned vertically; the third and fourth ends of the flow equalization tube are both connected to the heat source channel; along the direction from the fourth end to the third end of the flow equalization tube, the diameter of the flow equalization tube gradually decreases. The flow equalization tube divides the internal space of the heat source channel into a first space and a second space. The first space corresponds to the first channel that is not covered by the peripheral wall of the filter cartridge. The filter cartridge drives the flow equalization tube to move synchronously through the connecting assembly. During operation, the heat source flows from the first channel, which is not covered by the peripheral wall of the filter cartridge, to the first space, and then flows to the second space through the flow equalization tube. The flow equalization tube is used to increase the flow resistance of the heat source from the first space to the second space.

5. A welded wide-channel heat exchanger according to claim 4, characterized in that: The connecting assembly also includes a U-shaped connecting frame, which is located on the second side of the support and can slide along the first direction; one end of the U-shaped connecting frame is located in the heat source inlet channel and is connected to the second end of the filter cartridge; the other end of the U-shaped connecting frame is located in the heat source outlet channel and is connected to the fourth end of the flow equalization tube.

6. A welded wide-channel heat exchanger according to claim 5, characterized in that: The support is provided with a first pressing plate, a second pressing plate and a third pressing plate; the first pressing plate, the second pressing plate and the third pressing plate are distributed in sequence along the direction from the first side to the second side of the support; some heat exchange plates are located between the first pressing plate and the second pressing plate, and other heat exchange plates are located between the second pressing plate and the third pressing plate.

7. A welded wide-channel heat exchanger according to claim 6, characterized in that: The bracket is equipped with multiple locking screws, which are distributed around the circumference of the bracket. Each locking screw is set along a first direction and is sequentially connected to a first pressure plate, a second pressure plate, and a third pressure plate. The screws are locked in stages by two nuts. The first nut locks the first pressure plate and the second pressure plate together, and the second nut locks the second pressure plate and the third pressure plate together.

8. A welded wide-channel heat exchanger according to claim 6, characterized in that: Among the multiple heat exchange plates located between the first and second pressing plates, two adjacent heat exchange plates are fixedly connected; among the multiple heat exchange plates located between the second and third pressing plates, two adjacent heat exchange plates abut against each other; and the multiple heat exchange plates located between the second and third pressing plates are detachable.

9. A welded wide-channel heat exchanger according to claim 2, characterized in that: The heat exchange plates include multiple first plates and multiple second plates arranged alternately; along the direction from the first side to the second side of the support, the two sides of the first plate are the third side and the fourth side, respectively, and the two sides of the second plate are the fifth side and the sixth side, respectively. The third side of the first plate is located within the first channel. A first sealing strip is provided on the third side of the first plate. The first sealing strip surrounds the heat source inlet channel, the heat source outlet channel, and the first channel, forming a sealed first area, which allows the heat source inlet channel, the heat source outlet channel, and the first channel to communicate with each other. The cold source inlet channel and the cold source outlet channel are located outside the first area. The first sealing strip is used to prevent the cold source outlet channel, the cold source inlet channel, and the first channel from communicating. The fifth side of the second plate is located inside the second channel. A second sealing strip is provided on the fifth side of the second plate. The second sealing strip surrounds the cold source outlet channel, the cold source inlet channel, and the second channel to form a sealed second area, so that the cold source outlet channel, the cold source inlet channel, and the second channel are interconnected. The heat source channel and the heat source outlet channel are located outside the second area. The second sealing strip is used to prevent the heat source inlet channel, the heat source outlet channel, and the second channel from being connected.

10. A welded wide-channel heat exchanger according to claim 6, characterized in that: The U-shaped connecting frame and the third clamping plate are slidably connected, and a sealing rubber is provided at the sliding connection.

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