CN211425171U - Plate-fin heat exchanger - Google Patents

Abstract

The utility model provides a plate-fin heat exchanger, including baffle, fin and strip of paper used for sealing, place fin and strip of paper used for sealing and constitute intermediate layer unit between two adjacent baffles, last corner and lower corner of the lateral surface of strip of paper used for sealing and strip of paper used for sealing all are provided with the chamfer on the last corner of the medial surface of fin and lower corner, seam crossing formation recess between baffle and strip of paper used for sealing, square groove has all been seted up along strip of paper used for sealing length direction to four sides of strip of paper used for sealing, a through-hole has been seted up in the middle of the strip. The utility model aims at providing a sealed effectual, can reduce the plate-fin heat exchanger of thermal stress by a wide margin.

Description

Plate-fin heat exchanger

Technical Field

The utility model relates to a plate-fin heat exchanger technical field, concretely relates to plate-fin heat exchanger.

Background

Heat exchangers, also known as heat exchangers, are devices that transfer heat from one heat carrying medium to another. In industrial processes, heating or cooling, i.e. the transfer of heat, is often required. The plate-fin heat exchanger is a heat exchange device for cold recovery and energy transfer, and is also one of the most advanced heat exchange devices at present. Existing plate-fin heat exchangers are typically comprised of baffles, fins, and seals. The fins and the sealing strips are arranged between two adjacent partition plates to form a sandwich unit, and the sandwich unit is stacked according to different fluid modes and brazed into a whole. The seal strip is one of the main components in the plate-fin heat exchanger, the quality of the seal strip directly affects the quality and the service life of the plate-fin heat exchanger, and the structure of the seal strip is particularly important for the firmness, reliability, heat dissipation effect and service life of the heat exchanger. As shown in fig. 1, four corners of the existing seal are right angles, and during brazing, after a brazing material under the seal on the side surface of the plate-fin heat exchanger is melted, a phenomenon of dripping and hanging of the brazing material is easily caused, so that insufficient brazing material is generated at a joint between the seal and a partition plate, and when the plate-fin heat exchanger is impacted by an external force, the deformed partition plate and the seal are easily leaked.

In addition, after the seal of the plate-fin heat exchanger is brazed, in the working process of the heat exchanger, the heat stress generated by the structure of the seal can cause certain damage to the heat exchanger, and serious people can cause the tearing of the heat exchanger or the leakage and the expansion of the heat exchanger.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a sealed effectual, can reduce the plate-fin heat exchanger of thermal stress by a wide margin.

The utility model provides a plate-fin heat exchanger, including baffle, fin and strip of paper used for sealing, place fin and strip of paper used for sealing and constitute intermediate layer unit between two adjacent baffles, last corner and lower corner of the lateral surface of strip of paper used for sealing and strip of paper used for sealing all are provided with the chamfer on the last corner of the medial surface of fin and lower corner, seam crossing formation recess between baffle and strip of paper used for sealing, square groove has all been seted up along strip of paper used for sealing length direction to four sides of strip of paper used for sealing, a through-hole has been seted up in the middle of the.

Further, the chamfer is a planar chamfer.

Further, the chamfer is a circular arc chamfer.

Further, the through hole is round or square.

Further, the fins are sawtooth type fins, straight type fins or porous type fins.

Further, the seal is made of stainless steel or aluminum alloy.

The utility model discloses the beneficial effect who brings: 1. the upper corner and the lower corner of the outer side face of the seal and the upper corner and the lower corner of the inner side face, facing the fins, of the seal are provided with chamfers, a groove is formed in a joint between the partition plate and the seal to produce a capillary effect on molten brazing materials, the molten brazing materials are prevented from being hung in a downward dripping mode, the brazing materials collected in the groove improve the welding tightness between the partition plate and the seal, and the risk of leakage is reduced.

2. The utility model discloses a square groove that plate-fin heat exchanger strip of paper used for sealing set up has not only strengthened the radiating effect, has reduced thermal stress moreover by a wide margin, therefore has effectively avoided appearing breaking or the bad situation that rises in the heat exchanger working process for the life of heat exchanger can prolong greatly than ordinary strip of paper used for sealing. The utility model discloses a square groove and through-hole have saved the strip of paper used for sealing consumptive material by a wide margin, have alleviateed the weight of strip of paper used for sealing, have also improved overall structure's mechanical strength simultaneously, have strengthened the stability after connecting. The utility model discloses a square groove has increased the area of brazing on strip of paper used for sealing surface to increased the area of closing surface, improved the welding performance of strip of paper used for sealing and baffle, strengthened sealed effect, and then reduced the processing requirement of sealed face, the cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a sandwich unit of a conventional plate-fin heat exchanger;

fig. 2 is a schematic structural diagram of a sandwich unit of a plate-fin heat exchanger according to an embodiment of the present invention.

Fig. 3 is a front view of the seal of the present invention.

Fig. 4 is a schematic view of the three-dimensional structure of the seal of the present invention.

Fig. 5 is a schematic structural view of another shape of the seal of the present invention.

The novel heat-insulation plate comprises a partition plate 1, a fin 2, a seal 3, a chamfer 4, a groove 5, a square groove 6 and a through hole 7.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 2-3, the utility model provides a plate-fin heat exchanger, including baffle 1, fin 2 and strip of paper used for sealing 3, place fin 2 and strip of paper used for sealing 3 and constitute the intermediate layer unit between two adjacent baffles 1, all be provided with chamfer 4 on the last corner of the lateral surface of strip of paper used for sealing 3 and lower corner and the strip of paper used for sealing 3 towards the last corner of the medial surface of fin and lower corner, seam crossing formation recess 5 between baffle 1 and strip of paper used for sealing 3, square groove 6 has all been seted up along strip of paper used for sealing length direction to four sides of strip of paper used for sealing 3, a through-hole 7 has been seted up in.

In this embodiment, the chamfer 4 is a planar chamfer or a circular chamfer. The through hole 7 is round or square. Fig. 4 shows a planar chamfer, circular through hole seal, and fig. 5 shows a circular chamfer, square through hole seal structure.

Preferably, the fins 2 are saw-toothed fins, straight fins or porous fins. The seal 3 is made of stainless steel or aluminum alloy.

The utility model discloses an its transversal square of personally submitting of strip of paper used for sealing, all can weld with the baffle on two arbitrary parallel surfaces of strip of paper used for sealing body, and these are convenient for all assemble the strip of paper used for sealing on the heat exchanger. The upper corner and the lower corner of the outer side face of the seal and the upper corner and the lower corner of the inner side face, facing the fins, of the seal are provided with chamfers, a groove is formed in a joint between the partition plate and the seal to produce a capillary effect on molten brazing materials, the molten brazing materials are prevented from being hung in a downward dripping mode, the brazing materials collected in the groove improve the welding tightness between the partition plate and the seal, and the risk of leakage is reduced.

The utility model discloses a square groove that plate-fin heat exchanger strip of paper used for sealing set up has not only strengthened the radiating effect, has reduced thermal stress moreover by a wide margin, therefore has effectively avoided appearing breaking or the bad situation that rises in the heat exchanger working process for the life of heat exchanger can prolong greatly than ordinary strip of paper used for sealing. The utility model discloses a square groove and through-hole have saved the strip of paper used for sealing consumptive material by a wide margin, have alleviateed the weight of strip of paper used for sealing, have also improved overall structure's mechanical strength simultaneously, have strengthened the stability after connecting. And simultaneously, the utility model discloses a square groove has increased the area of brazing on strip of paper used for sealing surface to increased the area of closed surface, improved the welding performance of strip of paper used for sealing and baffle, strengthened sealed effect, and then reduced the processing requirement of sealed face, the cost is reduced.

The above description is only an example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (6)

1. The utility model provides a plate-fin heat exchanger, includes baffle (1), fin (2) and strip of paper used for sealing (3), places fin (2) and strip of paper used for sealing (3) and constitutes the intermediate layer unit between two adjacent baffles (1), its characterized in that, all be provided with chamfer (4) on the last corner and the lower corner of the lateral surface of strip of paper used for sealing (3) and strip of paper used for sealing (3) towards the last corner and the lower corner of the medial surface of fin, seam crossing formation recess (5) between baffle (1) and strip of paper used for sealing (3), square groove (6) have all been seted up along strip of paper used for sealing length direction to four sides of strip of paper used for sealing (3), a through-hole (7) have been.

2. Plate fin heat exchanger according to claim 1, wherein the chamfer (4) is a planar chamfer.

3. Plate fin heat exchanger according to claim 1, wherein the chamfer (4) is a rounded chamfer.

4. Plate fin heat exchanger according to claim 1, wherein the through holes (7) are round or square.

5. The plate fin heat exchanger of claim 1, wherein the fins (2) are saw-tooth fins, straight fins or perforated fins.

6. Plate fin heat exchanger according to claim 1, wherein the seal (3) is made of stainless steel or an aluminium alloy.

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