Sealing structure for detachable heat exchanger core

Abstract

The utility model provides a sealing structure for detachable heat exchanger core body relates to the field of heat exchanger, including a plurality of baffle, a plurality of first seal, a plurality of connecting shaft and a plurality of second seal, baffle board surface level, the fin is arranged between adjacent baffle, the first seal is separated through two parallel arrangements between adjacent baffle, baffle edge, first seal vertical direction is provided with a plurality of connecting holes, and the connecting shaft is alternatively passed through the connecting hole on baffle and first seal, and the connecting shaft end adopts the pressure of compacting piece and is compacted, the height of second seal is consistent with the height of first seal, and second seal is fixed with first seal, and the second seal is connected and fixed with adjacent baffle through filling glue. The utility model provides a sealing structure for detachable heat exchanger core body, solves the problem of low heat exchange efficiency and high cost of detachable heat exchange core in the prior art, can reduce the thickness of baffle under the premise of convenient dismounting and guaranteeing sealing, thereby improving heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, and more particularly to a sealing structure for a detachable heat exchanger core. Background Technology

[0002] Plate-fin heat exchangers are commonly used industrial devices. They typically have multiple parallel baffles with two different temperature channels on either side of the baffles. Cold and hot media contact the two sides of the baffles respectively, and heat exchange occurs on the baffles. Sealing strips are installed at the edges of the gaps between the baffles to form tubular spaces. Cold and hot media flow through these tubular spaces on either side of the baffles; the tubular space through which the cold media flows is the cold flow channel, and the tubular space through which the hot media flows is the hot flow channel. End caps are installed at the inlet and outlet of all the tubular spaces through which the cold and hot media flow, respectively, for convergence. The cold media enters from the cold flow end cap, disperses into the cold flow channel, and finally flows out from the cold flow end cap outlet; the hot media does the same. Fins are installed in the cold and hot flow channels to guide the media and provide structural support between adjacent baffles (the sealing strips also serve as structural support between adjacent baffles).

[0003] Seals are typically welded between two partitions. Heat exchangers need to be replaced after prolonged use, requiring cleaning, primarily of the area between the partitions. To facilitate this cleaning, Chinese Patent Application No. 202223462645.6 discloses a heat exchanger core that is easy to disassemble and assemble. This design uses connecting holes on the partitions and seals, with a connecting shaft passing through all the aligned holes. Nuts are tightened using the threads at the ends of the connecting shafts, applying pressure perpendicular to the outer partitions. This ensures a tight seal between the partitions and seals, eliminating the need for welding and facilitating subsequent separation of the partitions and seals, thus simplifying heat exchanger cleaning.

[0004] However, the above structure has defects. Since the contact surface between the partition and the seal is not flat, there is still a gap between the partition and the seal for the hot and cold medium to pass through, even with mechanical pressing alone. Therefore, it is difficult to ensure a full seal for the medium. Furthermore, the mating structure of the recessed and protruding parts requires the partition to have a wall thickness sufficient to create the recessed part. This increases the thickness of the partition, reduces the heat exchange efficiency, and also increases the cost of the heat exchanger's partition. Utility Model Content

[0005] To address the aforementioned technical problems, the sealing structure for a detachable heat exchanger core provided by this utility model can reduce the thickness of the partition plate while ensuring easy disassembly and sealing, thereby improving heat exchange efficiency.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The sealing structure for a detachable heat exchanger core provided by this utility model includes multiple partitions, multiple first seals, multiple connecting shafts, and multiple second seals. The partition surfaces are horizontal. Fins are provided between adjacent partitions. Adjacent partitions are separated by two parallel first seals. Multiple connecting holes are equidistantly spaced vertically along the edges of the partitions. Multiple connecting holes are provided vertically along the first seals. The connecting shafts alternately pass through the connecting holes on the partitions and the connecting holes on the first seals. A clamping element is provided at the end of the connecting shaft, pressing against the partitions. The height of the second seals is the same as the height of the first seals. The second seals are fixed against the first seals. The second seals are connected and fixed to adjacent partitions by filler adhesive.

[0007] The sealing structure for a detachable heat exchanger core provided by this utility model preferably includes an inner side where the fins are disposed between the two first seals; a second seal is disposed inside the first seal; the inner surface of the first seal is a first contact surface; the second seal includes a second contact surface; and the second contact surface is in close contact with the first contact surface.

[0008] The sealing structure for a detachable heat exchanger core provided by this utility model preferably has the upper and lower bottom surfaces of the second seal strip respectively abutting against the partition plate for fixation; strip-shaped glue injection grooves are formed on the upper and lower bottom surfaces of the second seal strip; the glue injection grooves are formed along the extension direction of the second seal strip; the opening of the glue injection grooves is directly opposite the adjacent partition plate.

[0009] The sealing structure for a detachable heat exchanger core provided by this utility model preferably has a V-shaped cross-section of the glue injection groove; the depth of the glue injection groove is less than 1 / 2 of the thickness of the second seal.

[0010] The sealing structure for a detachable heat exchanger core provided by this utility model preferably uses silicone rubber as the filler.

[0011] The sealing structure for a detachable heat exchanger core provided by this utility model preferably includes a clamping nut as the clamping component; the two ends of the connecting shaft are threaded; and the clamping nut is fitted and fixed on the thread at the end of the connecting shaft.

[0012] The above technical solution has the following advantages or beneficial effects: This utility model provides a sealing structure for a detachable heat exchanger core, relating to the field of heat exchangers. It includes multiple partitions, multiple first seals, multiple connecting shafts, and multiple second seals. The partition surfaces are horizontal. Fins are provided between adjacent partitions. Adjacent partitions are separated by two parallel first seals. Multiple connecting holes are equidistantly spaced vertically along the edges of the partitions. Multiple connecting holes are also provided vertically along the first seals. The connecting shafts alternately pass through the connecting holes on the partitions and the connecting holes on the first seals. A clamping element is provided at the end of the connecting shaft, pressing against the partitions. The height of the second seals is the same as the height of the first seals. The second seals are fixed against the first seals. The second seals are connected and fixed to adjacent partitions by filler adhesive. This utility model provides a sealing structure for a detachable heat exchanger core, solving the problems of low heat exchange efficiency and high cost in existing detachable heat exchanger cores. It can reduce the thickness of the partitions while ensuring easy disassembly and sealing, thereby improving heat exchange efficiency. Attached Figure Description

[0013] The present invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the gist of the invention.

[0014] Figure 1 This is a cross-sectional view of the sealing structure for a detachable heat exchanger core provided in Embodiment 1 of this utility model. Detailed Implementation

[0015] Example 1:

[0016] The sealing structure for a detachable heat exchanger core provided in Embodiment 1 of this utility model is as follows: Figure 1 As shown, it includes multiple partitions 1, multiple first seals 2, multiple connecting shafts 3, and multiple second seals 4; the partition 1 has a horizontal surface; fins 5 are provided between adjacent partitions 1; adjacent partitions 1 are separated by two parallel first seals 2; multiple connecting holes 6 are equidistantly opened vertically along the edge of the partition 1; multiple connecting holes 6 are opened vertically along the first seals 2; the connecting shafts 3 alternately pass through the connecting holes 6 on the partitions 1 and the connecting holes 6 on the first seals 2; the end of the connecting shaft 3 is provided with a clamping element 7 that presses against the partition 1; the height of the second seals 4 is the same as the height of the first seals 2; the second seals 4 are fixed against the first seals 2; the second seals 4 are connected and fixed to adjacent partitions 1 by filler adhesive.

[0017] The sealing structure for a detachable heat exchanger core provided in this embodiment is an improvement on an existing heat exchanger core that is easy to disassemble and assemble, such as the one disclosed in Chinese Patent Application No. 202223462645.6. However, to ensure that the medium between the baffles 1 does not flow out, it cuts grooves on the baffles 1 and provides protrusions on the first seal 2. The larger cross-section of the protrusions is used to resist the impact of the medium and to extend the path required for the medium to leak out from the first seal 2. However, the need to cut grooves on the baffles 1 means that the baffles 1 need to be thickened, which will block the heat exchange between the hot and cold media on both sides of the baffles 1. Moreover, a thicker baffle 1 will result in a higher production cost for the heat exchanger core. In contrast, the baffles 1 in this embodiment can be thinner because the structure provided in this embodiment can ensure the obstruction of the fluid medium without cutting grooves, that is, by increasing the thickness of the baffles 1. A second seal 4 is attached to the first seal 2. The connection between the second seal 4 and the partition 1 is made of filler glue, which prevents the fluid medium from detaching. The impact of the fluid medium on the seal is borne by the first seal 2, which is attached to the second seal 4. The first seal 2 can transmit the impact force of the fluid to the connecting shaft 3. The connecting shaft 3 itself is fixed relative to the partition 1. Therefore, in this embodiment, the first seal 2 prevents the impact force of the fluid medium, and the filler glue between the second seal 4 and the partition 1 prevents the fluid medium from leaking from the partition and the seal. When disassembling the partition 1, the partition 1 and the first seal 2 are naturally separated by pulling the connecting shaft 3 out of the connecting hole 6. Then, the operator can apply a smaller force (compared to welding) to separate the second seal 4, which is connected to the adjacent partition 1 by filler glue.

[0018] The sealing structure for a detachable heat exchanger core provided in Embodiment 1 of this utility model solves the problems of low heat exchange efficiency and high cost of detachable heat exchanger cores in the prior art. It can reduce the thickness of the partition plate while ensuring easy disassembly and sealing, thereby improving the heat exchange efficiency.

[0019] As a preferred embodiment, in this embodiment, the area where the fins 5 are disposed between the two first seals 2 is the inner side; the second seal 4 is disposed inside the first seal 2; the inner surface of the first seal 2 is the first contact surface 21; the second seal 4 includes a second contact surface 41; the second contact surface 41 and the first contact surface 21 are tightly attached to each other. The second seal 4 can be disposed inside or outside the first seal 2, but when disposed outside, since both hot and cold fluid media will first contact the first seal 2, and there may be gaps between the first seal 2 and the partition 1 (due to the unevenness between the first seal 2 and the partition 1), the hot and cold media may communicate through the connecting hole 6 through which the connecting shaft 3 passes. Therefore, in this embodiment, the second seal 4 is disposed inside the first seal 2. The direct impact of the fluid media on the second seal 4 will be borne by the first seal 2 through the contact between the second contact surface 41 of the second seal 4 and the first contact surface of the first seal 2. The impact of the fluid media on the connection between the second seal 4 and the partition 1 is borne by the filler adhesive.

[0020] In this embodiment, the upper and lower bottom surfaces of the second seal 4 are respectively fixed against the partition; strip-shaped glue injection grooves 42 are opened on the upper and lower bottom surfaces of the second seal 4; the glue injection grooves 42 are opened along the extension direction of the second seal 4; the opening of the glue injection grooves 42 is directly opposite the adjacent partition 1.

[0021] As a preferred embodiment, in this embodiment, the cross-sectional shape of the glue injection groove 42 is V-shaped; the depth of the glue injection groove 42 is less than 1 / 2 of the thickness of the second seal 4. The V-shaped groove is wide towards the partition 1 and narrow towards the back of the partition 1, so that the filler (preferably silicone rubber in this embodiment) cures to form a wedge-shaped adhesive layer. At this time, the upper surface of the adhesive layer is in contact with the partition 1, the lower surface is embedded in the bottom of the V-shaped groove, and the two sides are in contact with the groove wall of the V-shaped groove. When the medium flows near the second seal 4, it will generate pressure perpendicular to the partition 1. This pressure is transmitted to the upper surface of the wedge-shaped adhesive layer through the partition 1, forcing the adhesive layer to be squeezed towards the bottom of the V-shaped groove. However, the bottom of the V-shaped groove is small, and the wedge-shaped adhesive layer is difficult to compress towards the bottom of the V-shaped groove. Therefore, even if there is an external force to squeeze the filler towards the bottom of the V-shaped groove, the filler will not be able to fully penetrate because the bottom capacity of the V-shaped groove is small. The squeezed filler can extend on the side near the partition 1, which increases the contact surface and fills the compression space between the partition 1 and the second seal 4, enhancing the sealing effect.

[0022] To specifically achieve the pressing of all partitions 1 and the first seal 2 by means of the connecting shaft 3, in this embodiment, the pressing element 7 is a pressing nut; both ends of the connecting shaft 3 are threaded; the pressing nut is fitted and fixed on the thread at the end of the connecting shaft 3. In this embodiment, by tightening the pressing nut at both ends of the connecting shaft 3, the pressing nut compresses the partitions 1 at the edges, thereby achieving the pressing between the partitions 1 and the first seal 2.

[0023] In summary, this utility model provides a sealing structure for a detachable heat exchanger core, relating to the field of heat exchangers. It includes multiple partitions, multiple first seals, multiple connecting shafts, and multiple second seals. The partition surfaces are horizontal. Fins are provided between adjacent partitions. Adjacent partitions are separated by two parallel first seals. Multiple connecting holes are equidistantly spaced vertically along the edges of the partitions. Multiple connecting holes are also provided vertically along the first seals. The connecting shafts alternately pass through the connecting holes on the partitions and the connecting holes on the first seals. A clamping element is provided at the end of the connecting shaft, pressing against the partitions. The height of the second seals is the same as the height of the first seals. The second seals are fixed against the first seals. The second seals are connected and fixed to adjacent partitions by filler adhesive. This utility model's sealing structure for a detachable heat exchanger core solves the problems of low heat exchange efficiency and high cost in existing detachable heat exchanger cores. It reduces partition thickness while ensuring easy disassembly and sealing, thereby improving heat exchange efficiency.

[0024] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A sealing structure for a detachable heat exchanger core, comprising multiple partitions, multiple first seals, and multiple connecting shafts; the partition surfaces are horizontal; Fins are provided between adjacent partitions; adjacent partitions are separated by two parallel first seals; The partition has multiple connecting holes equidistantly spaced vertically along its edge; the first seal has multiple connecting holes vertically; the connecting shaft alternately passes through the connecting holes on the partition and the connecting holes on the first seal; the end of the connecting shaft is provided with a clamping member that presses against the partition. Its features are, It also includes multiple second seals; The height of the second seal is the same as the height of the first seal; the second seal is fixed against the first seal. The second seal is fixed to the adjacent partition by a filler adhesive.

2. The sealing structure for a detachable heat exchanger core as described in claim 1, characterized in that, The area where the fins are disposed between the two first seals is the inner side; The second seal is disposed inside the first seal; The inner side of the first seal is the first contact surface; the second seal includes a second contact surface; the second contact surface and the first contact surface are tightly adhered to each other.

3. The sealing structure for a detachable heat exchanger core as described in claim 1, characterized in that, The upper and lower surfaces of the second seal are respectively abutted against the partition plate for fixation; The second seal has strip-shaped glue injection grooves on its upper and lower surfaces; the glue injection grooves are formed along the extension direction of the second seal; the openings of the glue injection grooves are directly opposite the adjacent partition.

4. The sealing structure for a detachable heat exchanger core as described in claim 3, characterized in that, The adhesive injection groove has a V-shaped cross-section; the depth of the adhesive injection groove is less than 1 / 2 of the thickness of the second seal.

5. The sealing structure for a detachable heat exchanger core as described in claim 1, characterized in that, The filler is silicone rubber.

6. The sealing structure for a detachable heat exchanger core as described in claim 1, characterized in that, The clamping component is a clamping nut; both ends of the connecting shaft are threaded; the clamping nut is fitted and fixed on the thread at the end of the connecting shaft.

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