Heat exchange device

Abstract

The heat exchange device comprises a heat exchanger, a filter screen assembly and a vibration mechanism, the filter screen assembly is arranged at the end, close to an air inlet end cover of the heat exchanger, of a heat exchange body of the heat exchanger, the filter screen assembly can move in the axial direction of the heat exchange body, and the vibration mechanism is arranged on the air inlet end cover and connected with the filter screen assembly. The vibration mechanism drives the filter screen assembly to move, and dust adhering to the filter screen is shaken off. The filter screen assembly comprises elastic connecting pieces and a plurality of filter screens, the filter screens are arranged at intervals in the axial direction of the heat exchange body, and the elastic connecting pieces are arranged between every two adjacent filter screens and connected with the two adjacent filter screens, so that the filter screens can be driven by the vibration mechanism to move together. And the multiple filter screens can move relatively, so that the vibration effect of the filter screens is improved, then the solid particle shaking-off effect of the filter screens is improved, and the problem that normal work of the heat exchange device is affected due to the fact that the filter screens are blocked by solid particles is avoided.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange equipment, and in particular to a heat exchange device. Background Technology

[0002] A heat exchanger for coke oven gas to liquefied natural gas and hydrogen co-production is a device specifically designed for heat exchange during the coke oven gas conversion process. Its function is to effectively manage heat and improve energy utilization efficiency while coke oven gas is converted into liquefied natural gas and hydrogen. Simply put, the working principle of the heat exchanger is to achieve heat recovery and utilization through heat transfer between two fluids at different temperatures.

[0003] Because coke oven gas contains dust, sulfides, and other solid particles, it will deposit on the surface and in the internal channels of the heat exchanger after being introduced into the heat exchanger, forming scale. These deposits will reduce the thermal efficiency of the heat exchanger, increase energy consumption, and may cause equipment failure. Therefore, a filter screen is often installed at the gas inlet. However, due to the continuous introduction of coke oven gas, the filter screen may become clogged, affecting the normal operation of the equipment. Utility Model Content

[0004] The purpose of this invention is to solve the problem that existing heat exchange devices are prone to filter clogging, which affects the normal operation of the heat exchange device.

[0005] To solve the above-mentioned technical problems, this utility model provides a heat exchange device, including a heat exchanger, a filter assembly, and a vibration mechanism. The heat exchanger includes a heat exchange body and an inlet end cap. The inlet end cap is connected to one axial end of the heat exchange body and has an inlet port. The inlet end cap is used to connect to an external pipeline, and the gas for heat exchange enters the heat exchange body through the inlet port. The vibration mechanism is disposed on the inlet end cap. The filter assembly includes an elastic connector and multiple filter screens. The multiple filter screens are disposed at the end of the heat exchange body where the inlet end cap is located and are movable along the axial direction of the heat exchange body. The multiple filter screens are spaced apart along the axial direction of the heat exchange body, wherein at least one filter screen is connected to the vibration mechanism. The elastic connector is disposed between two adjacent filter screens and connected to the two adjacent filter screens. The vibration mechanism causes the filter screen connected to it to move and drives the other filter screens to move relative to each other through the elastic connector.

[0006] In some embodiments of this application, the heat exchange body has a stop portion on the side of the filter assembly away from the vibration mechanism. The stop portion is used to prevent the filter from moving toward the side away from the vibration mechanism, so that when the vibration mechanism pushes the filter to move toward the stop portion, the elastic connector is compressed and stores energy, and when the vibration mechanism moves toward the stop portion, the elastic connector releases energy.

[0007] In some embodiments of this application, a first sliding groove is provided on the inner wall surface of the heat exchange body, and the first sliding groove extends along the axial direction of the heat exchange body; a first slider is provided on the radial outer surface of each filter screen, and the first slider is slidably connected to the first sliding groove, so that the filter screen is slidably connected to the heat exchange body; the first sliding groove forms the stop portion on the side wall opposite to the air inlet end cover.

[0008] In some embodiments of this application, the heat exchange body has an opening at one end of the first slide groove away from the stop portion, and the opening communicates with the first slide groove; the air inlet end cap is provided with a limiting member, which is disposed at the opening to prevent the filter screen from sliding out of the first slide groove.

[0009] In some embodiments of this application, the elastic connector includes a main rod, a secondary rod, and an elastic element. The main rod has a mounting cavity with one open end. One axial end of the secondary rod passes through the opening of the mounting cavity and is inserted into the mounting cavity. The secondary rod can slide relative to the main body along the axial direction of the heat exchange main body. The elastic element is installed in the mounting cavity, and both ends of the elastic element abut against the main rod and the secondary rod, respectively, so that the elastic force of the elastic element can push the secondary rod and the main rod to move away from each other. The main rod and the secondary rod are respectively connected to two adjacent filter screens.

[0010] In some embodiments of this application, the main rod is provided with a second sliding groove on the side wall of the mounting cavity, the second sliding groove extending axially along the heat exchange body; the auxiliary rod is provided with a second slider on its radially outer side, the second slider being slidably connected to the second sliding groove.

[0011] In some embodiments of this application, the filter screen is provided with a first connector on one side of the main rod, and a second connector is provided on the main rod, the second connector being snapped into the first connector; the filter screen is provided with a third connector on one side of the auxiliary rod, and a fourth connector is provided on the auxiliary rod, the fourth connector being snapped into the third connector.

[0012] In some embodiments of this application, the vibration mechanism includes a driving member and a movable member. The driving member is connected to the air inlet end cap, and the movable member is connected to the driving member and the filter screen. The movable member can reciprocate along the axial direction of the heat exchange body under the drive of the driving member to push the filter screen to move.

[0013] In some embodiments of this application, a fifth connector is provided on the radial outer surface of the heat exchange body; a sixth connector is provided on the radial outer surface of the air inlet end cap, and the sixth connector is engaged with the fifth connector, so that the air inlet end cap is detachably connected to the heat exchange body.

[0014] In some embodiments of this application, the fifth connector has a snap-fit ​​hole that extends through the axial direction of the heat exchanger body; the sixth connector includes a rod, a locking block, and an elastic reset member. One end of the rod is fixedly connected to the air inlet end cap, and the other end extends toward the heat exchanger body; the rod has a mounting groove at the end opposite to the air inlet end cap, and the mounting groove extends through the side of the rod perpendicular to the axis of the heat exchanger body; the locking block is slidably connected in the mounting groove, and the locking block can slide into the mounting groove of the rod, allowing the rod to pass through the snap-fit ​​hole. The locking block can also slide to one end outside the mounting groove of the rod, preventing the rod from passing through the snap-fit ​​hole, thereby snapping the sixth connector onto the fifth connector; the elastic reset member is disposed in the mounting groove and connected to the locking block, and the elastic force of the elastic reset member pushes the locking block to slide so that one end of the locking block is outside the mounting groove.

[0015] In some embodiments of this application, the locking block has a guide slope on the side away from the air intake end cap, so that the size of the end of the locking block away from the insertion rod is smaller than the size of the end of the locking block close to the insertion rod.

[0016] As can be seen from the above technical solution, the beneficial effects of this utility model are as follows: The heat exchange device of this application includes a heat exchanger, a filter assembly, and a vibration mechanism. The filter assembly is disposed on the heat exchange body of the heat exchanger near the air inlet end cap of the heat exchanger. The filter assembly is used to filter solid particles in the gas entering the heat exchanger. The filter assembly can move along the axial direction of the heat exchange body. The vibration mechanism is disposed on the air inlet end cap and connected to the filter assembly, so that the filter assembly is driven to move by the vibration mechanism, shaking off the dust adhering to the filter. The filter assembly includes an elastic connector and multiple filter screens. The multiple filter screens are spaced apart along the axial direction of the heat exchange body. The elastic connector is disposed between two adjacent filter screens and connected to the two adjacent filter screens, so that the multiple filter screens can move together under the drive of the vibration mechanism, and the multiple filter screens can also move relative to each other. When the vibration mechanism moves the filter screen connected to it, it drives the other filter screens to move relative to each other through the elastic connector, thereby improving the vibration effect of the filter screen, and thus improving the effect of shaking off solid particles from the filter screen, avoiding the problem of solid particles clogging the filter screen and affecting the normal operation of the heat exchange device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the heat exchange device in one embodiment.

[0018] Figure 2 This is a schematic diagram of the structure in one embodiment where the air intake end cap is connected to the vibration mechanism.

[0019] Figure 3 This is a schematic diagram of the structure of the fifth and sixth connectors in a disassembled state in one embodiment.

[0020] Figure 4 This is a structural schematic diagram of the sixth connector in one embodiment, wherein the insertion rod is shown in cross-section.

[0021] Figure 5 This is a cross-sectional structural schematic diagram of a heat exchange device in one embodiment.

[0022] Figure 6 yes Figure 5 A magnified view of a portion at point A.

[0023] Figure 7 This is a schematic diagram of the structure of the vibration mechanism and filter assembly in one embodiment.

[0024] Figure 8 This is a schematic diagram of the structure of the elastic connector in one embodiment.

[0025] Figure 9 This is a schematic diagram of the connection structure between the filter screen and the elastic connector in one embodiment.

[0026] The reference numerals in the attached drawings are explained as follows: 1-Heat exchanger; 11-Heat exchange body; 111-First slide groove; 112-Stop; 113-Inlet port; 114-Outlet port; 12-Inlet end cap; 121-Limiting component; 122-Inlet port; 13-Fifth connector; 131-Snap-fit ​​hole; 14-Sixth connector; 141-Insertion rod; 1411-Mounting groove; 1412-Third slide groove; 142-Locking block; 1421-Guide slope; 1422-Third slider; 143-Spring 15-Reset component; 15-End cap for air outlet; 151-Air outlet; 2-Vibration mechanism; 21-Driver; 22-Moving component; 3-Filter assembly; 31-Filter; 311-First slider; 312-First connector; 313-Third connector; 32-Elastic connector; 321-Main rod; 3211-Mounting cavity; 3212-Second slide groove; 3213-Second connector; 322-Second rod; 3221-Second slider; 3222-Fourth connector; 323-Elastic component. Detailed Implementation

[0027] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0028] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] See Figure 1Coke oven gas contains a large amount of dust, sulfides and other solid particles. These solid particles will deposit on the surface and in the internal heat exchange channels of the heat exchange device, forming scale. This will reduce the heat exchange efficiency of the heat exchange device, and in severe cases, may even cause blockage of the heat exchange channels, thereby damaging the coke oven gas to liquefied natural gas and hydrogen co-production equipment using the heat exchange device. This application provides a heat exchange device, which includes a heat exchanger 1, a filter assembly 3, and a vibration mechanism 2. The filter assembly 3 is disposed on the heat exchange body 11 of the heat exchanger 1 and is located at one end of the air inlet end cap 12 of the heat exchanger 1. The filter assembly 3 is used to filter solid particles in the gas entering the heat exchanger 1. The filter assembly 3 can move along the axial direction of the heat exchange body 11. The vibration mechanism 2 is disposed on the air inlet end cap 12 and is connected to the filter assembly 3, so that the vibration mechanism 2 drives the filter assembly 3 to move, shaking off the solid particles stuck to the filter screen 31 of the filter assembly 3, thus avoiding the problem of solid particles clogging the filter screen 31 and affecting the normal operation of the heat exchange device.

[0031] The heat exchanger 1 includes a heat exchange body 11, an inlet end cap 12, and an outlet end cap 15. Two non-communicating heat exchange channels are formed on the heat exchange body 11. The two fluids requiring heat exchange pass through these two channels respectively, thus achieving heat exchange. The two heat exchange channels are a first heat exchange channel and a second heat exchange channel. The first heat exchange channel is arranged along the axial direction of the heat exchange body 11 and is used for the coke oven gas produced by the coke oven gas to liquefied natural gas co-production hydrogen equipment. The inlet end cap 12 and the outlet end cap 15 are respectively located at opposite ends of the axial direction of the heat exchange body 11 and are used for connection to pipelines. The inlet end cap 12 has an inlet port 122, which is connected to one end of the first heat exchange channel. The outlet end cap 15 has an outlet port 15, which is connected to the other end of the first heat exchange channel. The second heat exchange channel is arranged intersecting with the first heat exchange channel, and the heat exchange medium used to absorb the heat of coke oven gas passes through the second heat exchange channel. One end of the second heat exchange channel is provided with an air inlet 113, and the other end is provided with an air outlet 114. Both the air inlet 113 and the air outlet 114 are provided on the heat exchange body 11 and are used to connect to the pipeline.

[0032] See Figures 1 to 5 A fifth connector 13 is provided on the radial outer surface of the heat exchange body 11. The fifth connector 13 is arranged to protrude radially along the heat exchange body 11 and is used to connect with the air inlet end cap 12. A sixth connector 14 is provided on the radial outer surface of the air inlet end cap 12. The sixth connector 14 is used to engage with the fifth connector 13, so that the air inlet end cap 12 is detachably connected to the heat exchange body 11, thereby facilitating the disassembly and assembly of the filter screen assembly 3 and facilitating the cleaning of solid particles filtered by the filter screen assembly 3.

[0033] exist Figure 3 In the illustrated embodiment, the fifth connector 13 has a snap-fit ​​hole 131 that extends through the fifth connector 13 along the axial direction of the heat exchange body 11. The sixth connector 14 includes a rod 141, a locking block 142, and an elastic reset member 143. One end of the rod 141 is fixedly connected to the air inlet end cap 12, and the other end extends toward the heat exchange body 11. The rod 141 has a mounting groove 1411 at the end away from the air inlet end cap 12. The mounting groove 1411 extends through the side of the rod 141 perpendicular to the axis of the heat exchange body 11 and through both sides of the rod 141. That is, the length direction of the rod 141 is the same as the axial direction of the heat exchange body 11, and the mounting groove 1411 extends through both sides of the rod 141. Two locking blocks 142 are provided, which are arranged back to back and are slidably connected in the mounting groove 1411. The elastic reset member 143 is installed in the mounting groove 1411 and positioned between the two locking blocks 142. The elastic force of the elastic reset member 143 causes the two locking blocks 142 to extend outward from the mounting groove 1411 of the insert rod 141 in opposite directions. The elastic reset member 143 is preferably a compression spring. The locking blocks 142 can slide into the mounting groove 1411 of the insert rod 141, allowing the insert rod 141 to pass through the snap-fit ​​hole 131. The locking blocks 142 can also slide to a position where one end is located outside the mounting groove 1411 of the insert rod 141, preventing the insert rod 141 from passing through the snap-fit ​​hole 131, thereby causing the sixth connector 14 to snap onto the fifth connector 13.

[0034] When the air inlet end cap 12 is installed on the heat exchange body 11, the locking block 142 is slid into the mounting groove 1411 of the insert rod 141 by external force, so that the insert rod 141 passes through the snap-fit ​​hole 131. After the insert rod 141 passes through the snap-fit ​​hole 131, no external force is applied to the locking block 142, so that the locking block 142 slides to one end outside the mounting groove 1411 of the insert rod 141 under the elastic action of the elastic reset member 143, so that the insert rod 141 cannot be pulled out from the snap-fit ​​hole 131, realizing the snap-fit ​​between the sixth connector 14 and the fifth connector 13, thereby realizing the detachable installation of the air inlet end cap 12 on the heat exchange body 11.

[0035] Multiple sixth connectors 14 and multiple fifth connectors 13 are provided. Multiple fifth connectors 13 are arranged in a ring array along the axis of the heat exchange body 11, and multiple sixth connectors 14 are arranged in a ring array along the axis of the air inlet end cover 12. The multiple sixth connectors 14 and multiple fifth connectors 13 are arranged in a one-to-one correspondence.

[0036] Preferably, the length direction of the mounting groove 1411 is the same as the tangential direction of the heat exchange body 11, so that the end of the locking block 142 that slides out of the mounting groove 1411 does not face the heat exchange body 11. This makes it convenient for the user to apply external force to the locking block 142 so that the locking block 142 slides into the mounting groove 1411 of the insert rod 141, thereby making it convenient for the user to remove the air inlet end cap 12 from the heat exchange body 11.

[0037] A third sliding groove 1412 is provided on the side wall of the mounting groove 1411. Each locking block 142 is provided with a third slider 1422. The third slider 1422 is located at the end of the locking block 142 near the elastic reset member 143, that is, at the end of the locking block 142 located in the mounting groove 1411. The third slider 1422 is slidably connected to the third sliding groove 1412, so that the locking block 142 is slidably connected to the insert rod 141 and will not separate from the insert rod 141.

[0038] In a preferred embodiment, the locking block 142 has a guide slope 1421 on the side opposite to the air inlet end cap 12, and the size of the end of the locking block 142 away from the elastic reset member 143 is smaller than the size of the end of the locking block 142 near the elastic reset member 143. When the air inlet end cap 12 is installed on the heat exchange body 11, that is, when the insertion rod 141 passes through the snap-fit ​​hole 131, the guide slope 1421 of the locking block 142 first abuts against the side wall of the snap-fit ​​hole 131, and during the process of the insertion rod 141 passing through the snap-fit ​​hole 131, the side wall of the snap-fit ​​hole 131 applies a force to the locking block 142 in the direction of sliding into the mounting groove 1411, so that the insertion rod 141 can pass smoothly through the snap-fit ​​hole 131. After the locking block 142 on the insertion rod 141 has completely passed through the snap-fit ​​hole 131, the force applied to the locking block 142 by the side wall of the snap-fit ​​hole 131 disappears, and the locking block 142 slides to one end located outside the insertion rod 141 under the elastic action of the elastic reset member 143. This achieves the snap-fit ​​between the sixth connector 14 and the fifth connector 13, and the connection is convenient.

[0039] It should be noted that there may be only one locking block 142, and one end of the elastic reset member 143 abuts against the insertion rod 141, and the other end abuts against the locking block 142. The elastic force of the elastic reset member 143 pushes the locking block 142 to slide to a position where one end is located radially outside the insertion rod 141.

[0040] See Figure 1 , Figure 2 , Figure 5 and Figure 6The heat exchange body 11 has a first groove 111 on its inner wall surface near the end cap 12 of the air inlet. The first groove 111 extends axially along the heat exchange body 11. The heat exchange body 11 has an opening at the end of the first groove 111 near the end cap 12 of the air inlet, and the opening communicates with the first groove 111. The filter assembly 3 can slide into the first groove 111 from one side of the opening and can slide on the first groove 111. The heat exchange body 11 has a stop 112 at the end of the first groove 111 opposite to the end cap 12 of the air inlet (which is also the end opposite to the vibration mechanism 2). The end cap 12 of the air inlet has a limiting member 121, which is located at the opening, so that the filter assembly 3 can only slide between the stop 112 and the limiting member 121, thereby preventing the filter assembly 3 from sliding out of the first groove 111.

[0041] exist Figure 6 In the illustrated embodiment, a stop portion 112 is formed on the side wall of the first groove 111 opposite to the air inlet end cap 12. In other embodiments, the stop portion 112 may also be a separate component fixed to the inner wall surface of the heat exchange body 11.

[0042] exist Figure 2 In the embodiment shown, the limiting member 121 is configured to cooperate with the first slide groove 111 so that when the air inlet end cap 12 is installed on the heat exchange body 11, the limiting member 121 and the first slide groove 111 cooperate to achieve the alignment between the air inlet end cap 12 and the heat exchange body 11, thereby improving the installation accuracy between the air inlet end cap 12 and the heat exchange body 11. Moreover, the limiting member 121 can restrict the filter screen assembly 3 within the first slide groove 111.

[0043] See Figure 1 and Figure 2 The vibration mechanism 2 can be a telescopic cylinder structure, a telescopic hydraulic cylinder structure, or an electric push rod structure. The vibration mechanism 2 includes a driving component 21 and a movable component 22. The driving component 21 is connected to the air inlet end cap 12, and the movable component 22 connects the driving component 21 to the filter screen 31 of the filter screen assembly 3. Driven by the driving component 21, the movable component 22 can reciprocate along the axial direction of the heat exchange body 11 to push the filter screen 31 to move, thereby achieving vibration of the filter screen 31. For example, if the vibration mechanism 2 is an electric push rod structure, then the driving component 21 is a motor, and the movable component 22 is a push rod. The motor drives the push rod to extend or retract, thereby pushing the filter screen 31 to move. It should be noted that the vibration mechanism 2 can also be a crank-connecting rod mechanism, that is, the vibration mechanism 2 includes a motor, a crank and a connecting rod. The crank is connected to the output shaft of the motor, one end of the connecting rod is connected to the center position of the output shaft of the motor, and the other end is connected to the filter screen 31. The motor drives the crank and the connecting rod to move, thereby driving the filter screen 31 to reciprocate in the first slide groove 111. That is, the motor of the crank-connecting rod mechanism is the driving component, and the connecting rod and the crank form the moving components.

[0044] exist Figure 1 In the illustrated embodiment, the drive member 21 is fixed to the outer surface of the intake end cap 12 to prevent solid particles in the gas flowing through the intake end cap 12 from adhering to the drive member 21 and affecting its operation. The movable member 22 extends through the intake end cap 12 into its interior and abuts against the filter screen 31. In other embodiments, the movable member 22 and the filter screen 31 may also be fixedly connected.

[0045] See Figure 7 The filter assembly 3 includes an elastic connector 32 and multiple filters 31. The multiple filters 31 are disposed between the heat exchange body 11 and the air inlet end cap 12, and are capable of moving axially along the heat exchange body 11. The multiple filters 31 are spaced apart axially along the heat exchange body 11. The elastic connector 32 is disposed between two adjacent filters 31 and connected to the two adjacent filters 31. This arrangement allows the multiple filters 31 to move together under the drive of the vibration mechanism 2, and also allows relative movement between the multiple filters 31. When the vibration mechanism 2 moves the filter 31 connected to it, the elastic connector 32 drives the other filters 31 to move relative to each other, thereby improving the vibration effect of the filters 31 and improving the dust removal effect of the filters 31, preventing dust from clogging the filters 31 and affecting the normal operation of the heat exchange device. Moreover, when the filters 31 are disassembled and cleaned, the entire filter assembly 3 can be removed from the heat exchange body 11 simultaneously, making the disassembly and assembly of the filter assembly 3 more convenient.

[0046] In one embodiment, when the filter assembly 3 is in its natural state (the elastic connector 32 is not compressed), the filter screens 31 on both sides of the heat exchange body 11 abut against the stop portion 112 and the limiting member 121, respectively, so that the filter assembly 3 will not move freely on the first slide groove 111 when the vibration mechanism 2 is not working. When the vibration mechanism 2 is working and the movable member 22 of the vibration mechanism 2 moves towards the stop portion 112, due to the obstruction of the stop portion 112, the movable member 22 abuts against the filter screen 31 on the side of the filter assembly 3 closest to the vibration mechanism 2 and can push it to move, thereby compressing and storing energy in the elastic connector 32. When the movable member 22 of the vibration mechanism 2 moves rapidly away from the stop portion 112, the filter screen 31 on the side closest to the limiting member 121 is pushed towards the limiting member 121 by the release of energy from the elastic connector 32, so that the filter screen 31 moves within the first slide groove 111 to shake off the solid particles adhering to its surface and prevent the filter screen 31 from being blocked. Furthermore, when the filter screen 31 impacts the limiting member 121, the elastic connector 32 vibrates continuously, thereby causing the filter screen 31 to vibrate continuously, which improves the vibration effect of the filter screen 31 and thus improves the effect of shaking off solid particles adhering to the surface of the filter screen 31.

[0047] Among them, the filter screen 31 near the air intake end cap 12 is the first filter structure to come into contact with the gas to be filtered, and it has more solid particles adhering to it. In this embodiment, due to the setting of the stop part 112, the filter screen 31 near the air intake end cap 12 has a larger range of motion, thereby improving the effect of shaking off the solid particles adhering to the surface of the filter screen 31.

[0048] In an alternative embodiment, there is a distance between the stop 112 and the filter screen 31, which is less than the stroke of the movable member 22 reciprocating along the axial direction of the heat exchange body 11. This allows the movable member 22 of the vibration mechanism 2 to move towards the stop 112, abutting against the filter screen 31 on the side of the filter screen assembly 3 closest to the vibration mechanism 2 and pushing it to move. When the movable member 22 of the vibration mechanism 2 moves rapidly away from the stop 112, the filter screen 31 on the side closest to the limiting member 121 is pushed towards the limiting member 121 by the release of energy from the elastic connector 32. Moreover, since the filter screen assembly 3 as a whole can slide within the first slide groove 111, all the filter screens 31 vibrate, improving the vibration effect and thus improving the effect of shaking off solid particles adhering to the surface of the filter screen 31.

[0049] In one embodiment, one of the filter screens 31 of the filter screen assembly 3 is fixedly connected to the movable part 22 of the vibration mechanism 2, and the vibration mechanism 2 drives the filter screen assembly 3 to reciprocate along the axial direction of the heat exchange body 11, thereby shaking off the solid particles adhering to the surface of the filter screen 31. Since the elastic connector 32 can be compressed and stretched, the motion inertia of the multiple filter screens 31 is different when accelerating, decelerating or changing direction during the movement, so that two adjacent filter screens 31 move relative to each other under the action of motion inertia, thereby improving the effect of shaking off the solid particles adhering to the surface of the filter screen 31. In this embodiment, the stop part 112 and the limiting part 121 may not be provided on the heat exchange body 11.

[0050] It should be noted that the movable part 22 of the vibration mechanism 2 can also be connected to multiple filter screens 31. For example, there are four filter screens 31. When two filter screens 31 are connected to the movable part 22, the other two filter screens 31 can also move relative to each other and with other filter screens 31, which improves the effect of shaking off solid particles adhering to the surface of the filter screens 31.

[0051] Each filter screen 31 is adapted to the cross-section of the heat exchange body 11, enabling the filter screen 31 to filter all gas entering the heat exchange channel through the air inlet 122. Each filter screen 31 has a first slider 311 on its radial outer surface, which is slidably connected to a first groove 111, allowing the filter screen 31 to be slidably connected to the heat exchange body 11. Figure 1 In the illustrated embodiment, multiple first chutes 111 are provided, and the multiple first chutes 111 are arranged in a circular array along the axis of the heat exchange body 11. The number of first sliders 311 on each filter screen 31 is equal to the number of first chutes 111, and the multiple first sliders 311 are arranged in a one-to-one correspondence with the multiple first chutes 111. The cross-section of the first chute 111 is T-shaped, and the first sliders 311 are adapted to fit the first chutes 111.

[0052] See Figure 8 The elastic connector 32 includes a main rod 321, a secondary rod 322, and an elastic element 323. The main rod 321 has an open mounting cavity 3211. One axial end of the secondary rod 322 passes through the opening of the mounting cavity 3211 and is inserted into it. The secondary rod 322 can slide relative to the main body along the axial direction of the heat exchange body 11. The elastic element 323 is installed in the mounting cavity 3211, and both ends of the elastic element 323 abut against the main rod 321 and the secondary rod 322, respectively. The elastic force of the elastic element 323 can push the secondary rod 322 and the main rod 321 to move away from each other in the same direction as the axial direction of the heat exchange body 11. The main rod 321 and the secondary rod 322 are fixedly connected to two adjacent filter screens 31. When the movable part 22 of the vibration mechanism 2 drives the filter screen 31 to move closer to the stop 112, the secondary rod 322 and the main rod 321 slide towards each other, causing the elastic element 323 to store energy, and the distance between the filter screens 31 connected to the secondary rod 322 and the main rod 321 decreases. When the movable part 22 of the vibration mechanism 2 moves rapidly away from the stop 112, the elastic element 323 releases energy, causing the secondary rod 322 and the main rod 321 to slide away from each other, thereby increasing the distance between the filter screens 31 connected to the secondary rod 322 and the main rod 321. Through the operation of the vibration mechanism 2 (i.e., the continuous reciprocating motion of the movable part 22), the filter screen 31 vibrates continuously. The elastic element 323 is preferably a spring.

[0053] The outer wall of the auxiliary rod 322 slides against the main rod 321, thereby reducing the friction between the first slider 311 and the first groove 111. This disperses the friction between the filter screen 31 and the heat exchange body 11 to the auxiliary rod 322 and the main rod 321, as well as the first slider 311 and the first groove 111, preventing excessive local stress from affecting the service life. Furthermore, when the connection point between the moving part 22 of the vibration mechanism 2 and the filter screen 31 is not located at the center of the filter screen 31, the filter screen 31 can move smoothly, preventing jamming due to uneven force on the filter screen 31.

[0054] The main rod 321 has a second sliding groove 3212 on the side wall of the mounting cavity 3211, and the second sliding groove 3212 extends along the axial direction of the heat exchange body 11; the auxiliary rod 322 has a second slider 3221 on its radial outer side, and the second slider 3221 is slidably connected to the second sliding groove 3212, so that the auxiliary rod 322 and the main rod 321 can slide relative to each other but will not separate.

[0055] See Figure 7 and Figure 9 In one embodiment, the filter screen 31 is provided with a first connecting member 312 on one side of the main rod 321, and a second connecting member 3213 is provided on the main rod 321. The second connecting member 3213 is snapped into the first connecting member 312, thereby connecting the filter screen 31 to the main rod 321, and the connection is convenient. Similarly, the filter screen 31 is provided with a third connecting member 313 on one side of the secondary rod 322, and a fourth connecting member 3222 is provided on the secondary rod 322. The fourth connecting member 3222 is snapped into the third connecting member 313, thereby connecting the filter screen 31 to the secondary rod 322, and the connection is convenient. The filter screen 31 and the elastic connecting member 32 are connected by snapping, making it easier to disassemble and assemble the filter screen assembly 3 during cleaning. In other embodiments, the filter screen 31 and the main rod 321, and the filter screen 31 and the secondary rod 322, can also be fixedly connected by screws or other structures.

[0056] exist Figure 9 In the illustrated embodiment, the first connector 312 and the filter screen 31 are separately disposed, and the first connector 312 is fixed to the filter screen 31. The first connector 312 is provided with a snap-fit ​​groove, and the second connector 3213 snaps into the snap-fit ​​groove of the first connector 312. It should be noted that the first connector 312 and the filter screen 31 can also be an integral structure, that is, the filter screen 31 has a snap-fit ​​groove for snapping into the second connector 3213.

[0057] Similarly, the third connector 313 is separate from the filter screen 31, and the third connector 313 is fixed to the filter screen 31. The third connector 313 is provided with a snap-fit ​​groove, and the fourth connector 3222 snaps into the snap-fit ​​groove of the third connector 313. It should be noted that the third connector 313 and the filter screen 31 can also be an integral structure, that is, the filter screen 31 has a snap-fit ​​groove for snapping into the fourth connector 3222.

[0058] Preferably, the first connector 312 and the third connector 313 have the same structure, and the second connector 3213 and the fourth connector 3222 have the same structure, so that when multiple filters 31 are connected together by the elastic connector 32, the two ends of the elastic connector 32 can be interchanged, that is, the fourth connector 3222 can be engaged with the first connector 312, and the second connector 3213 can be engaged with the third connector 313, making the connection more convenient.

[0059] In an alternative embodiment, the resilient connector 32 includes a resilient element 323, the two ends of which are directly connected to two adjacent filter screens 31. In this embodiment, it is not necessary to provide a main rod 321 and a secondary rod 322. The resilient element 323 is preferably a spring.

[0060] The heat exchange device of this application includes a heat exchanger 1, a filter assembly 3, and a vibration mechanism 2. The filter assembly 3 is disposed between the heat exchange body 11 of the heat exchanger 1 and the air inlet end cover 12 of the heat exchanger 1, and is used to filter solid particles in the gas entering the heat exchanger 1. The filter assembly 3 can move along the axial direction of the heat exchange body 11. The vibration mechanism 2 is disposed on the air inlet end cover 12 and connected to the filter assembly 3, so that the filter assembly 3 is driven to move by the vibration mechanism 2, and the dust stuck to the filter 31 is shaken off. The filter assembly 3 includes an elastic connector 32 and multiple filter screens 31. The multiple filter screens 31 are spaced apart along the axial direction of the heat exchange body 11. The elastic connector 32 is positioned between adjacent filter screens 31 and connected to them, allowing the multiple filter screens 31 to move together under the drive of the vibration mechanism 2. Furthermore, the multiple filter screens 31 can also move relative to each other, improving the vibration effect of the filter screens 31 and thus enhancing the removal of solid particles. This prevents solid particles from clogging the filter screens 31 and affecting the normal operation of the heat exchange device. Moreover, the air inlet end cap 12 is detachably connected to the heat exchange body 11 via a sixth connector 14 and a fifth connector 13, facilitating the cleaning of the filter screens 31 in the filter assembly 3.

[0061] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A heat exchange device, characterized by, The heat exchanger comprises a heat exchange body and an air inlet end cover connected to one end of the heat exchange body in the axial direction, the air inlet end cover is provided with an air inlet, and the air inlet end cover is used to connect external pipelines, and the gas for heat exchange enters the heat exchange body through the air inlet. The vibration mechanism is arranged on the air inlet end cover. The filter screen assembly comprises elastic connecting members and a plurality of filter screens, the plurality of filter screens are arranged at one end of the heat exchange body provided with the air inlet end cover and can move in the axial direction of the heat exchange body, the plurality of filter screens are arranged at intervals in the axial direction of the heat exchange body, at least one filter screen is connected to the vibration mechanism, the elastic connecting members are arranged between and connected to adjacent two filter screens, the vibration mechanism drives the filter screen connected thereto to move, and the elastic connecting members drive other filter screens to move relatively.

2. The heat exchange device according to claim 1, wherein the heat exchange body is provided with a stop portion on the side of the filter screen assembly away from the vibration mechanism, the stop portion is used to block the movement of the filter screen to the side away from the vibration mechanism, so that the elastic connecting members are compressed and stored energy when the vibration mechanism drives the filter screen to move towards the stop portion, and the elastic connecting members release energy when the vibration mechanism moves away from the stop portion.

3. The heat exchange device according to claim 2, wherein the inner wall surface of the heat exchange body is provided with a first sliding groove extending in the axial direction of the heat exchange body. The radial outer surface of each filter screen is provided with a first sliding block, and the first sliding block is in sliding connection with the first sliding groove, so that the filter screen is in sliding connection with the heat exchange body. The side wall of the first sliding groove away from the air inlet end cover forms the stop portion.

4. The heat exchange device according to claim 3, wherein the heat exchange body is provided with an opening at one end of the first sliding groove away from the stop portion, and the opening is in communication with the first sliding groove. The air inlet end cover is provided with a limiting member arranged at the opening to prevent the filter screen from sliding out of the first sliding groove.

5. The heat exchange device according to claim 1, wherein the elastic connecting member comprises a main rod, a secondary rod and an elastic member, the main rod is provided with an open mounting cavity at one end, the secondary rod is inserted into the mounting cavity through the opening of the mounting cavity, the secondary rod can slide in the axial direction of the heat exchange body relative to the main rod, the elastic member is arranged in the mounting cavity, and the two ends of the elastic member are in abutment with the main rod and the secondary rod respectively, so that the elastic force of the elastic member can drive the secondary rod and the main rod to move away from each other. The main rod and the secondary rod are connected to adjacent two filter screens respectively.

6. The heat exchange device according to claim 5, wherein ​ ​ ​ ​ ​ The main rod is provided with a second sliding groove on the side wall of the mounting cavity, and the second sliding groove extends along the axial direction of the heat exchange main body; the radial outer side of the auxiliary rod is provided with a second sliding block, and the second sliding block is in sliding connection with the second sliding groove.

7. The heat exchange device according to claim 5, characterized in that, The filter screen is provided with a first connecting piece on one side of the main rod, the main rod is provided with a second connecting piece, and the second connecting piece is in clamping connection with the first connecting piece. The filter screen is provided with a third connecting piece on one side of the auxiliary rod, the auxiliary rod is provided with a fourth connecting piece, and the fourth connecting piece is in clamping connection with the third connecting piece.

8. The heat exchange device according to claim 1, characterized in that, The vibration mechanism comprises a driving piece and a movable piece, the driving piece is connected with the air inlet end cover, the movable piece is connected with the driving piece and the filter screen, and the movable piece can reciprocate along the axial direction of the heat exchange main body under the driving of the driving piece to push the filter screen to move.

9. The heat exchange device according to claim 1, characterized in that, The radial outer surface of the heat exchange main body is provided with a fifth connecting piece; The radial outer surface of the air inlet end cover is provided with a sixth connecting piece, the sixth connecting piece is in clamping connection with the fifth connecting piece, and the air inlet end cover is detachably connected to the heat exchange main body.

10. The heat exchange device according to claim 9, characterized in that, The fifth connecting piece is provided with a clamping hole penetrating through along the axial direction of the heat exchange main body; The sixth connecting piece comprises a plug rod, a locking block and an elastic reset piece, one end of the plug rod is fixedly connected with the air inlet end cover, and the other end extends towards the heat exchange main body; the plug rod is provided with a mounting groove at the end away from the air inlet end cover, and the mounting groove penetrates through the side surface of the plug rod perpendicular to the axial line of the heat exchange main body; The locking block is in sliding connection in the mounting groove, the locking block can slide into the mounting groove of the plug rod, so that the plug rod can pass through the clamping hole, and the locking block can also slide to one end outside the mounting groove of the plug rod, so that the sixth connecting piece is clamped on the fifth connecting piece; The elastic reset piece is arranged in the mounting groove and connected with the locking block, and the elastic force of the elastic reset piece pushes the locking block to slide so that one end of the locking block is located outside the mounting groove.

11. The heat exchange device according to claim 10, characterized in that, The side of the locking block away from the air inlet end cover is provided with a guide inclined surface, and the size of the end of the locking block away from the plug rod is smaller than the size of the end of the locking block close to the plug rod.

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