Energy-saving phase change heat storage and exchange device

Abstract

The application discloses an energy-saving phase change heat storage and exchange device, which comprises a heat exchanger, a water storage tank arranged on the outer wall of the heat exchanger, a conveying pipe arranged on the inner wall of the heat exchanger, a fin fixed on the outer wall of the conveying pipe, and a storage disc arranged on the inner wall of the heat exchanger, wherein the inner wall of the storage disc is filled with PCM material. On one hand, water is used as a heat transfer medium to timely take away the heat stored by the PCM and store the heat in the water storage tank; on the other hand, the heat released by the PCM can be used to continue heating circulating water when the supply of flue gas is stopped, so that the continuity and integrity of waste heat recovery are ensured, heat waste is minimized, after a new filter element is in place, the outer wall of the filter element is automatically rewrapped by a heat insulation plate, heat insulation is achieved, heat loss of flue gas heat in the filtering link is reduced, and the overall heat efficiency is further improved. The sealing plate, the expansion ring and the inner wall of the filter element are in close contact, so that the risk of leakage of high-temperature flue gas or heat from the connecting part of the filter element can be effectively eliminated.

Description

Technical Field

[0001] This invention relates to the field of heat exchange device technology, specifically to an energy-saving phase change heat storage heat exchange device. Background Technology

[0002] In the field of industrial energy conservation and renewable energy utilization, waste heat recovery technology is an important means to reduce energy consumption and improve energy efficiency. Among them, the recovery and utilization of waste heat from high-temperature flue gas generated in industrial production processes has become one of the key directions of industrial energy conservation transformation. At present, the development of new waste heat recovery heat exchange devices using the latent heat storage characteristics of phase change materials has become an important research direction. Phase change materials (PCMs) have advantages such as high heat storage density and near-isothermal phase change process. They can store excess heat in the form of latent heat when flue gas is generated and release the stored heat when flue gas supply is stopped or insufficient, thereby achieving effective buffering of intermittent heat sources and heat transfer across time.

[0003] While existing waste heat recovery heat exchangers can recover some waste heat from high-temperature flue gas generated in industrial production, their designs are often quite simple and direct, relying primarily on the immediate contact between the flue gas and the heat exchange surface for heat transfer. They lack effective mechanisms to address intermittent and unstable heat sources. When flue gas supply fluctuates or production equipment shuts down intermittently, traditional heat exchangers cannot store excess heat, resulting in significant heat loss into the environment and a marked decrease in thermal energy utilization. Furthermore, traditional devices typically rely on a single flue gas-to-water heat exchange path; when flue gas supply stops, hot water supply is also interrupted, making it impossible to achieve cross-time heat allocation and utilization, and compromising the continuity and integrity of waste heat recovery. In addition, in the flue gas filtration stage, the filter installation structure of traditional heat exchangers is relatively rudimentary. When replacing or maintaining filters, the high-temperature flue gas interface is often directly exposed to the environment, causing significant heat loss and posing safety hazards such as burns and flue gas leaks. The connection between the filter element and the device often lacks effective heat insulation and sealing design, which can easily lead to problems such as seal aging and flue gas leakage after long-term use, further aggravating heat loss and environmental pollution. Even when new filter elements are installed properly, the lack of automatic wrapping and sealing compensation mechanisms often results in micro-gaps at the connection, causing continuous heat loss from the flue gas during the filtration process, making it difficult to improve the overall thermal efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an energy-saving phase change thermal storage heat exchange device, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an energy-saving phase change heat storage heat exchange device, comprising a heat exchanger, a water storage tank disposed on the outer wall of the heat exchanger, a conveying pipe disposed on the inner wall of the heat exchanger, fins fixed on the outer wall of the conveying pipe, a storage tray disposed on the inner wall of the heat exchanger, and a fixing frame disposed on the outer wall of the heat exchanger. A filter device is provided at the position where the fixing frame communicates with the heat exchanger. The inner wall of the storage tray is filled with PCM material. The water storage tank communicates with the heat exchanger. The energy-saving phase change heat storage heat exchange device further includes: a replacement device for quickly replacing the filter device between the fixing frame and the heat exchanger, a heat insulation device for insulating the joint of the heat exchanger when replacing the filter device, and a placement device for removing the filter device. The replacement device further includes a storage slot disposed on the outer wall of the fixed frame, a rotating ring rotating on the inner wall of the fixed frame, a gear seat rotating on the inner wall of the fixed frame, a rotating shaft rotating on the inner wall of the gear seat, a fixed frame fixedly connected to the rotating shaft, and a filter disposed on the inner wall of the fixed frame. The rotating ring has teeth on the side near the gear seat, and the teeth match the gear seat.

[0006] Preferably, the replacement device further includes a pressure rod fixedly connected to the gear seat, a heat insulation plate sliding on the outer wall of the heat exchanger connection port, a fixing block fixedly connected to the heat insulation plate, a positioning rod fixedly connected to the fixing block, a pressure plate fixedly connected to the pressure rod, a sealing sleeve slidably connected to the heat insulation plate, and an expansion ring fixedly connected to the sealing sleeve.

[0007] Preferably, the side of the fixing block near the pressure rod is set as an inclined surface, an elastic element is provided between the heat insulation plate and the heat exchanger, a torsion spring is provided between the rotating shaft and the gear seat, the torsion spring is provided to drive the rotating shaft to rotate, a placement groove is provided between the heat insulation plate and the sealing sleeve, and the expansion ring is placed on the inner wall of the placement groove, the expansion ring will expand when heated.

[0008] Preferably, the heat insulation device includes a positioning plate disposed on the inner wall of the fixed frame, a sealing plate rotatably connected to the positioning plate, a sliding rod fixedly connected to the sealing plate, and a sliding ring sliding on the inner wall of the fixed frame. The sliding ring is provided with a guide groove on the side near the sliding rod, and the sliding rod is connected to the inner wall of the guide groove.

[0009] Preferably, the heat insulation device further includes a positioning plate two fixed inside the heat exchanger, a sealing plate two rotating on the inner wall of the positioning plate two, a sliding rod two fixedly connected to the sealing plate two, and a sliding ring two sliding on the inner wall of the heat exchanger. The sliding ring two has a sliding groove on the side near the sliding rod two, the sliding rod two contacts the inner wall of the sliding groove, and the sliding ring two is fixedly connected to the sealing sleeve.

[0010] Preferably, an elastic element is provided between the sliding ring one and the fixed frame. The elastic element is provided to drive the sliding ring one to reset. The sealing plate one and the positioning plate one are provided with a through groove one, and the positioning plate two and the sealing plate two are provided with a through groove two.

[0011] Preferably, the placement device includes an arc plate that slides on the inner wall of the fixed frame, a limiting key that is slidably embedded in the inner wall of the arc plate, a sliding block that is slidably connected to the arc plate, a rotating plate that rotates on the outer wall of the storage slot, and a push rod that is fixedly connected to the rotating plate.

[0012] Preferably, the placement device further includes a sliding member that slides through the outer wall of the storage slot, a limiting member fixedly connected to the sliding member, a rotating cover rotatably connected to the storage slot, a positioning frame fixedly connected to the storage slot, and a positioning block fixedly connected to the rotating plate. The rotating cover has a slot on the side near the limiting member, and the rotating plate has a limiting groove on the side near the limiting member.

[0013] Preferably, an elastic element is provided between the arc plate and the fixed frame to drive the arc plate to reset; an elastic element is provided between the limit key and the arc plate to drive the limit key to move towards the filter element; the side of the sliding block near the limit key is provided with an inclined surface to push the limit key to move away from the filter element; and an elastic element is provided between the sliding member and the storage slot to drive the sliding member to reset.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this invention, the intermittent and unstable waste heat of flue gas is stored as latent heat by melting the PCM material filled in the storage pan, thus realizing the storage and utilization of heat. By establishing a water circulation system between the heat exchanger and the water tank, water is used as a heat transfer medium to carry away the heat stored in the PCM and store it in the water tank in a timely manner. On the other hand, when the flue gas supply is stopped, the heat released by the PCM can be used to continue heating the circulating water, ensuring the continuity and integrity of waste heat recovery and minimizing heat waste. After the new filter element is in place, the heat insulation plate will automatically re-wrap its outer wall, playing a heat insulation role and reducing the loss of flue gas heat in the filtration process, further improving the overall thermal efficiency. The sealing plate and expansion ring are in close contact with the inner wall of the filter element, which can effectively prevent the risk of high-temperature flue gas or heat leakage from the filter element connection.

[0015] 2. In this invention, when the heat insulation plate moves the sealing plate to wrap and seal the filter element, the seal between the heat exchanger inlet and the filter element channel is automatically released. Only one action device is needed to automatically complete all subsequent sealing release and gas path connection work, without the need for separate operation of valves or switches, simplifying the operation process and reducing the possibility of misoperation. When it is necessary to remove the blocked or failed filter element, the device will simultaneously and automatically close the heat exchanger inlet and the filter element's own channel, so that both are restored to a sealed state. This ensures that before the operator touches or removes the filter element, the high-temperature, dusty, and possibly pressurized flue gas has been completely blocked outside the system, avoiding accidents caused by high-temperature flue gas ejection and injury due to misoperation or forgetting to close the valve, and providing effective protection for maintenance personnel.

[0016] 3. In this invention, the filter element can be pushed out by rotating and pushing the rotating plate, which greatly reduces the complexity of operation and improves the replacement efficiency. After use, the filter element may be stuck in the storage tank due to high temperature deformation, dust accumulation and adhesion, or slight expansion. The auxiliary pushing force of the rotating plate can easily push it out without the need for the operator to pull it out by force, which reduces the labor intensity and avoids damage to the parts due to brute force. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position and structure of the conveying pipe and fins of the present invention; Figure 3 This is a schematic diagram of the position structure of the rotating shaft and the fixing frame of the present invention; Figure 4 This is a schematic diagram showing the position and structure of the pressure bar and fixing block of the present invention; Figure 5 This is a schematic diagram of the positioning rod and pressure plate position structure of the present invention; Figure 6 This is a schematic diagram showing the positional structure of the positioning plate and the sealing plate of the present invention; Figure 7 This is a schematic diagram of the position structure of the limiting key and the sliding block of the present invention.

[0018] The meanings of the labels in the diagram are as follows: 1. Heat exchanger; 2. Water storage tank; 3. Delivery pipe; 4. Fins; 5. Storage tray; 6. Fixing frame; 7. Storage trough; 8. Rotating ring; 9. Gear seat; 10. Rotating shaft; 11. Fixing frame; 12. Filter element; 13. Pressure rod; 14. Fixing block; 15. Heat insulation plate; 16. Positioning rod; 17. Pressure plate; 18. Expansion ring; 19. Sealing sleeve; 21. Positioning plate one; 22. Sealing plate one; 23. Sliding rod one; 24. Sliding ring one; 25. Positioning plate two; 26. Sealing plate two; 27. Sliding rod two; 28. Sliding ring two; 31. Arc plate; 32. Limit key; 33. Sliding block; 34. Rotating plate; 35. Push rod; 36. Sliding component; 37. Limiting component; 38. Rotating cover; 39. Positioning block; 39. Positioning frame. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-7 One embodiment of the present invention is: an energy-saving phase change heat storage heat exchange device, including a heat exchanger 1, a water tank 2 disposed on the outer wall of the heat exchanger 1, a conveying pipe 3 disposed on the inner wall of the heat exchanger 1, fins 4 fixed on the outer wall of the conveying pipe 3, a storage tray 5 disposed on the inner wall of the heat exchanger 1, and a fixing frame 6 disposed on the outer wall of the heat exchanger 1. A filter device is provided at the position where the fixing frame 6 communicates with the heat exchanger 1. The inner wall of the storage tray 5 is filled with PCM material. The water tank 2 communicates with the heat exchanger 1. The energy-saving phase change heat storage heat exchange device also includes: a replacement device for quickly replacing the filter device between the fixing frame 6 and the heat exchanger 1, a heat insulation device for heat preservation of the joint of the heat exchanger 1 when replacing the filter device, and a placement device that can remove the filter device. The replacement device also includes a storage slot 7 disposed on the outer wall of the fixed frame 6, a rotating ring 8 rotating on the inner wall of the fixed frame 6, a gear seat 9 rotating on the inner wall of the fixed frame 6, a rotating shaft 10 rotating on the inner wall of the gear seat 9, a fixed frame 11 fixedly connected to the rotating shaft 10, and a filter element 12 disposed on the inner wall of the fixed frame 11. The rotating ring 8 has teeth on the side near the gear seat 9, and the teeth match the gear seat 9.

[0021] The replacement device also includes a pressure rod 13 fixedly connected to the gear seat 9, a heat insulation plate 15 sliding on the outer wall of the heat exchanger 1 connection port, a fixing block 14 fixedly connected to the heat insulation plate 15, a positioning rod 16 fixedly connected to the fixing block 14, a pressure plate 17 fixedly connected to the pressure rod 13, a sealing sleeve 19 slidably connected to the heat insulation plate 15, and an expansion ring 18 fixedly connected to the sealing sleeve 19.

[0022] The fixed block 14 is inclined on the side near the pressure rod 13. An elastic element is provided between the heat insulation plate 15 and the heat exchanger 1. A torsion spring is provided between the rotating shaft 10 and the gear seat 9. The torsion spring is provided to drive the rotating shaft 10 to rotate. A placement groove is provided between the heat insulation plate 15 and the sealing sleeve 19. An expansion ring 18 is placed on the inner wall of the placement groove. The expansion ring 18 will expand when heated.

[0023] In this embodiment, when it is necessary to collect waste heat generated in industrial production, the flue gas generated in industrial production will be transported through the conveying pipe 3 inside the heat exchanger 1. When the flue gas containing high temperature enters the conveying pipe 3, the heat contained in the flue gas will be transferred to the fins 4 through the pipe wall. After the heat is transferred to the fins 4, the heat of the fins 4 will be transferred to the inner wall through the outer wall of the storage pan 5. The heat transferred by the storage pan 5 will cause the internal PCM material to fuse and absorb heat. When the flue gas is transported through the conveying pipe 3, the water stored in the water storage tank 2 will circulate between the heat exchanger 1 and the water storage tank 2. After the water is transported into the heat exchanger 1, it will come into contact with the surface of the storage pan 5. During the water circulation process, the heat on the surface of the storage pan 5 will be absorbed into the water, and the heated water will be stored in the water storage tank 2. When the machine is turned off and the flue gas no longer generates heat, the heat absorbed in the PCM will be released to heat water, so that the heat generated during production can be fully utilized. When conveying flue gas, the flue gas will be filtered through the filter element 12 inside the fixed frame 6. During filtration, the filter element 12 may become clogged due to particulate matter in the flue gas. After long-term use, the filter element 12 will gradually fail and needs to be replaced. When replacing the filter element 12, rotate the rotating ring 8. The rotation of the rotating ring 8 will drive the gear seat 9 to rotate through the teeth. The rotation of the gear seat 9 will drive the pressure rod 13 to move. The pressure rod 13 will contact the inclined surface of the fixed block 14, and the pressure rod 13 will press the heat insulation plate 15 through the fixed block 14 to release the wrapping of the filter element 12. When the gear seat 9 rotates, it will drive the fixed frame 11 to move through the rotating shaft 10. The movement of the fixed frame 11 will drive the filter element 12 to move. When the heat insulation plate 15 wraps the filter element 12, the rotating shaft 10 cannot rotate. When the gear seat 9 rotates, it will continue to store force by pushing the torsion spring. When the pressure rod 13 releases the heat insulation plate 15 from the filter element 12 through the fixed block 14, the rotating shaft 10 will be pushed by the torsion spring to rotate. The rotation of the rotating shaft 10 will drive the filter element 12 to rotate into the storage tank 7 through the fixed frame 11. After the filter element 12 rotates into the inner wall of the storage tank 7, it will be cooled for a period of time and then taken out. When the filter element 12 on one side rotates into the storage tank 7, the filter element 12 on the other side will rotate from the storage tank 7 to the original position of the filter element 12 for use.When the gear seat 9 rotates, it drives the pressure plate 17 to move. The pressure plate 17 then contacts the positioning rod 16, keeping the heat insulation plate 15 away from the filter element 12. When the other filter element 12 moves to its original position, the pressure of the pressure plate 17 on the positioning rod 16 is released. At this time, the heat insulation plate 15 will re-wrap the outer wall of the filter element 12. The contact between the heat insulation plate 15 and the outer wall of the filter element 12 prevents heat loss when the flue gas passes through the filter element 12, achieving a heat insulation effect. The movement of the heat insulation plate 15 also drives the sealing sleeve 19 to move, and the sealing sleeve 19 then contacts... The inner wall of the filter element 12 is in contact with the sealing sleeve 19. The movement of the sealing sleeve 19 causes the expansion ring 18 to move, thus bringing the expansion ring 18 into contact with the filter element 12. When flue gas passes through the filter element 12, the expansion ring 18 expands due to the increased temperature, sealing the filter element 12 with the sealing sleeve 19 and preventing leakage of flue gas and heat. The combination of the conveying pipe 3 and the fins 4 significantly increases the contact area between the high-temperature flue gas and the heat exchange structure, ensuring efficient heat transfer from the flue gas. The melting of the PCM material filled in the storage pan 5 stores the intermittent and unstable waste heat of the flue gas as latent heat. This system achieves heat storage and utilization. By establishing a water circulation system between heat exchanger 1 and water storage tank 2, water is used as a heat transfer medium to promptly remove the heat stored in the PCM and store it in the water storage tank 2. Furthermore, when the flue gas supply is stopped, the heat released by the PCM can be used to continue heating the circulating water, ensuring the continuity and integrity of waste heat recovery and minimizing heat waste. Rotating the rotating ring 8 moves the filter element 12 towards the storage tank 7, allowing new filter elements 12 to be put into use. This eliminates the need for machine shutdown or manual replacement when filter elements 12 need to be replaced due to clogging or failure. The entire fixing frame 6 can be disassembled, and the replacement of the old and new filter elements 12 can be completed in a short time with simple operation, which greatly shortens the maintenance time and avoids production interruption caused by replacing the filter elements 12. It is particularly suitable for industrial waste heat recovery scenarios that require continuous operation. After the new filter element 12 is in place, the heat insulation plate 15 will automatically wrap its outer wall again to play a heat insulation role, reduce the loss of flue gas heat in the filtration stage, and further improve the overall thermal efficiency. The sealing sleeve 19 and the expansion ring 18 are in close contact with the inner wall of the filter element 12, which can effectively prevent the risk of high temperature flue gas or heat from leaking from the connection of the filter element 12.

[0024] Please see Figures 1-7 Based on the above embodiments, in another embodiment of the present invention, the heat insulation device includes a positioning plate 21 disposed on the inner wall of the fixed frame 11, a sealing plate 22 rotatably connected to the positioning plate 21, a sliding rod 23 fixedly connected to the sealing plate 22, and a sliding ring 24 sliding on the inner wall of the fixed frame 11. The sliding ring 24 has a guide groove on the side near the sliding rod 23, and the sliding rod 23 is connected to the inner wall of the guide groove.

[0025] The heat insulation device also includes a positioning plate 25 fixed inside the heat exchanger 1, a sealing plate 26 rotating on the inner wall of the positioning plate 25, a sliding rod 27 fixedly connected to the sealing plate 26, and a sliding ring 28 sliding on the inner wall of the heat exchanger 1. The sliding ring 28 has a sliding groove on the side near the sliding rod 27, the sliding rod 27 contacts the inner wall of the sliding groove, and the sliding ring 28 is fixedly connected to the sealing sleeve 19.

[0026] An elastic element is provided between the sliding ring 24 and the fixed frame 11. The elastic element is provided to drive the sliding ring 24 to reset. The sealing plate 22 and the positioning plate 21 have through grooves. The positioning plate 25 and the sealing plate 26 have through grooves.

[0027] The placement device includes an arc plate 31 that slides on the inner wall of the fixed frame 11, a limit key 32 that is slidably embedded in the inner wall of the arc plate 31, a sliding block 33 that is slidably connected to the arc plate 31, a rotating plate 34 that rotates on the outer wall of the storage slot 7, and a push rod 35 that is fixedly connected to the rotating plate 34.

[0028] The placement device also includes a sliding member 36 that slides through the outer wall of the storage slot 7, a limiting member 37 that is fixedly connected to the sliding member 36, a rotating cover 38 that is rotatably connected to the storage slot 7, a positioning frame 391 that is fixedly connected to the storage slot 7, and a positioning block 39 that is fixedly connected to the rotating plate 34. The rotating cover 38 has a slot on the side near the limiting member 37, and the rotating plate 34 has a limiting groove on the side near the limiting member 37.

[0029] An elastic element is provided between the arc plate 31 and the fixed frame 11. The elastic element is provided to drive the arc plate 31 to reset. An elastic element is provided between the limit key 32 and the arc plate 31. The elastic element is provided to drive the limit key 32 to move towards the filter element 12. The side of the sliding block 33 near the limit key 32 is set with an inclined surface. The inclined surface of the sliding block 33 is provided to push the limit key 32 to move away from the filter element 12. An elastic element is provided between the sliding member 36 and the storage groove 7. The elastic element is provided to drive the sliding member 36 to reset.

[0030] In this embodiment, during operation: when the filter element 12 is put into use, the heat insulation plate 15 will wrap around the outer wall of the filter element 12. When the heat insulation plate 15 moves, it will drive the sealing sleeve 19 to move and seal the filter element 12. When the sealing sleeve 19 moves, it will drive the sliding ring 28 to move. The movement of the sliding ring 28 will drive the sliding groove to move. When the sliding ring 28 moves, it will push the sliding rod 27 to move. The movement of the sliding rod 27 will drive the sealing plate 26 to rotate. The rotation of the sealing plate 26 will cause the positioning plate 25 to coincide with the through groove on the surface of the sealing plate 26, thus releasing the seal at the air inlet of the heat exchanger 1. When the sealing sleeve 19 moves, it will drive the sliding ring 24 to move. The movement of the sliding ring 24 will drive the guide groove to move. The sliding ring 24 will then drive the sliding rod 23 to move. The movement of the sliding rod 23 will drive the sealing plate 22 to rotate. The rotation of the sealing plate 22 will cause the positioning plate 21 to coincide with the through groove on the surface of the sealing plate 22. When the slots overlap, the seal of filter element 12 will be released, and filter element 12 will be connected to heat exchanger 1. When the heat insulation plate 15 moves the sealing sleeve 19 to wrap and seal filter element 12, the seal between the air inlet of heat exchanger 1 and the channel of filter element 12 will be automatically released. Only one action device is needed to automatically complete all subsequent seal release and air path connection work, without the need to operate valves or switches separately, simplifying the operation process and reducing the possibility of misoperation. When it is necessary to remove the blocked or failed filter element 12, the device will automatically close the air inlet of heat exchanger 1 and the channel of filter element 12 itself, so that both are restored to the sealed state. This ensures that before the operator touches or removes filter element 12, high temperature, dusty, and possibly pressurized flue gas has been completely blocked outside the system, avoiding accidents caused by high temperature flue gas spraying out and injuring people due to misoperation or forgetting to close the valve, and providing effective protection for maintenance personnel.

[0031] When the filter element 12 moves into the storage slot 7, it will contact the sliding member 36, which will then be pushed. The movement of the sliding member 36 will cause the limiting member 37 to contact the limiting of the rotating plate 34 and the rotating cover 38. At this time, the rotating plate 34 can rotate. When the filter element 12, which has been standing for a period of time, needs to be removed, the rotating plate 34 needs to be rotated. The rotation of the rotating plate 34 will cause the push rod 35 to move. The push rod 35 will contact the sliding block 33, which will then push the sliding block 33 to contact the limiting key 32. The push rod 35 will then push the sliding block 33 to move the limiting key 32 away from the filter element 12, thus releasing the locking of the limiting key 32 on the filter element 12. At this time, continuing to rotate the rotating plate 34 can push the arc plate 31 into the interior of the fixing frame 11, releasing the arc plate 31. The rotating plate 34, which encloses the filter element 12, can move the positioning block 39 when it rotates. When the positioning block 39 moves, it loses contact with the positioning frame 391, and the rotating plate 34 can be pushed. At this time, pushing the rotating plate 34 can help push the filter element 12 from the position of the rotating cover 38 in a direction away from the storage tank 7. At this time, the filter element 12 can be taken out from the inside of the storage tank 7. By rotating and pushing the rotating plate 34, the filter element 12 can be pushed out, which greatly reduces the complexity of operation and improves the replacement efficiency. After use, the filter element 12 may be stuck in the storage tank 7 due to high temperature deformation, dust accumulation and adhesion, or slight expansion. The auxiliary pushing force of the rotating plate 34 can easily push it out without the need for the operator to pull it out by force, which reduces the labor intensity and avoids damage to the parts due to brute force.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving phase change heat storage and exchange device, comprising a heat exchanger (1), a water tank (2) disposed on the outer wall of the heat exchanger (1), a conveying pipe (3) disposed on the inner wall of the heat exchanger (1), fins (4) fixed on the outer wall of the conveying pipe (3), a storage tray (5) disposed on the inner wall of the heat exchanger (1), and a fixing frame (6) disposed on the outer wall of the heat exchanger (1), wherein a filter device is provided at the position where the fixing frame (6) communicates with the heat exchanger (1), the inner wall of the storage tray (5) is filled with PCM material, and the water tank (2) communicates with the heat exchanger (1), characterized in that, The energy-saving phase change heat storage heat exchange device also includes: a replacement device for quickly replacing the filter device between the fixed frame (6) and the heat exchanger (1), a heat insulation device for heat preservation of the joint of the heat exchanger (1) when replacing the filter device, and a placement device that can remove the filter device. The replacement device also includes a storage slot (7) disposed on the outer wall of the fixed frame (6), a rotating ring (8) rotating on the inner wall of the fixed frame (6), a gear seat (9) rotating on the inner wall of the fixed frame (6), a rotating shaft (10) rotating on the inner wall of the gear seat (9), a fixed frame (11) fixedly connected to the rotating shaft (10), and a filter element (12) disposed on the inner wall of the fixed frame (11). The rotating ring (8) has teeth on the side near the gear seat (9), and the teeth match the gear seat (9).

2. The energy-saving phase change thermal storage heat exchange device according to claim 1, characterized in that: The replacement device also includes a pressure rod (13) fixedly connected to the gear seat (9), a heat insulation plate (15) sliding on the outer wall of the heat exchanger (1) connection port, a fixing block (14) fixedly connected to the heat insulation plate (15), a positioning rod (16) fixedly connected to the fixing block (14), a pressure plate (17) fixedly connected to the pressure rod (13), a sealing sleeve (19) slidingly connected to the heat insulation plate (15), and an expansion ring (18) fixedly connected to the sealing sleeve (19).

3. The energy-saving phase change thermal storage heat exchange device according to claim 2, characterized in that: The fixed block (14) is inclined on the side near the pressure rod (13), an elastic element is provided between the heat insulation plate (15) and the heat exchanger (1), a torsion spring is provided between the rotating shaft (10) and the gear seat (9), a placement groove is provided between the heat insulation plate (15) and the sealing sleeve (19), and the expansion ring (18) is provided on the inner wall of the placement groove.

4. The energy-saving phase change thermal storage heat exchange device according to claim 2, characterized in that: The heat insulation device includes a positioning plate (21) disposed on the inner wall of the fixed frame (11), a sealing plate (22) rotatably connected to the positioning plate (21), a sliding rod (23) fixedly connected to the sealing plate (22), and a sliding ring (24) sliding on the inner wall of the fixed frame (11). The sliding ring (24) has a guide groove on the side near the sliding rod (23), and the sliding rod (23) is connected to the inner wall of the guide groove.

5. The energy-saving phase change thermal storage heat exchange device according to claim 4, characterized in that: The heat insulation device also includes a positioning plate two (25) fixed inside the heat exchanger (1), a sealing plate two (26) rotating on the inner wall of the positioning plate two (25), a sliding rod two (27) fixedly connected to the sealing plate two (26), and a sliding ring two (28) sliding on the inner wall of the heat exchanger (1). The sliding ring two (28) has a sliding groove on the side near the sliding rod two (27), the sliding rod two (27) is in contact with the inner wall of the sliding groove, and the sliding ring two (28) is fixedly connected to the sealing sleeve (19).

6. The energy-saving phase change thermal storage heat exchange device according to claim 5, characterized in that: An elastic element is provided between the sliding ring (24) and the fixed frame (11). The sealing plate (22) and the positioning plate (21) are provided with a through groove. The positioning plate (25) and the sealing plate (26) are provided with a through groove.

7. The energy-saving phase change thermal storage heat exchange device according to claim 1, characterized in that: The placement device includes an arc plate (31) that slides on the inner wall of the fixed frame (11), a limiting key (32) that slides on the inner wall of the arc plate (31), a sliding block (33) that slides on the arc plate (31), a rotating plate (34) that rotates on the outer wall of the storage slot (7), and a push rod (35) that is fixedly connected to the rotating plate (34).

8. The energy-saving phase change thermal storage heat exchange device according to claim 7, characterized in that: The placement device further includes a sliding member (36) that slides through the outer wall of the storage slot (7), a limiting member (37) fixedly connected to the sliding member (36), a rotating cover (38) rotatably connected to the storage slot (7), a positioning frame (391) fixedly connected to the storage slot (7), and a positioning block (39) fixedly connected to the rotating plate (34). The rotating cover (38) has a slot on the side near the limiting member (37), and the rotating plate (34) has a limiting groove on the side near the limiting member (37).

9. The energy-saving phase change thermal storage heat exchange device according to claim 8, characterized in that: An elastic element is provided between the arc plate (31) and the fixed frame (11), an elastic element is provided between the limit key (32) and the arc plate (31), the sliding block (33) is provided with an inclined surface on the side near the limit key (32), and an elastic element is provided between the sliding member (36) and the storage groove (7).

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