Box-shaped laminated heat exchanger provided with novel backing plate structure

Abstract

The invention discloses a box-shaped laminated heat exchanger provided with a novel backing plate structure. The box-shaped laminated heat exchanger consists of heat exchange plates which are provided with oblique surface edges, are box-shaped and can be mutually laminated in sequence. The oblique surfaces of the edges of the heat exchange plates are mutually connected in a sealing manner; in interlayers formed by the heat exchange plates in the box-shaped laminated heat exchanger, corner pores for a heat transfer medium to circulate and heat exchange devices for dividing wall heat exchange are formed and arranged; the heat exchange devices are located in the middles of the heat exchange plates correspondingly; the corner pores are distributed at the two ends of the heat exchange plates correspondingly; at the two ends of each heat exchange plate, in space formed by the corresponding corner pores and the peripheral expansion plane, backing plates in sealing connection with the upper and lower heat exchange plates are arranged; and one backing plate is arranged at each of the two ends of each heat exchange plate, and the two backing plates have the same thickness, and have the same thickness as that of the heat exchange device in the middle of the corresponding heat exchange plate. The box-shaped laminated heat exchanger is characterized in that in the box-shaped laminated heat exchanger, the backing plates assembled in the heat exchange plates and the peripheries of the backing plates are provided with bulged structures.

Description

technical field [0001] The invention relates to a heat exchanger, in particular to a box-shaped stacked heat exchanger with a novel pad structure. Background technique [0002] The box-shaped stacked heat exchanger is composed of a plurality of box-shaped heat exchange plates with beveled edges that can be stacked together in sequence. In the interlayer formed by the heat exchange plates in the device, there are corner holes for the circulation of the heat exchange medium and heat exchange devices for the heat exchange of the partition walls. The heat exchange devices are located in the middle of each heat exchange plate, and the corner holes are distributed in each At both ends of the heat exchange plate, in the space formed by the corner holes at both ends of the heat exchange plate and the peripheral extension surface, there is a backing plate that is sealed and connected with the upper and lower heat exchange plates. There is a backing plate at both ends, and the thickn...

AI Technical Summary

Problems solved by technology

[0004] The disadvantages of the above two published patents are that the periphery of the backing plate shown in this patent (028286839) and (ZL2013205973605) is a right-angled edge structure, and its peripheral right-angled edge structure is especially shown in the utility model patent (ZL2013205973605 )of Figure 5 , Image 6 , Figure 15, Figure 11 , Figure 13 and in Figure 15 etc.

However, there is an R connection transition between the inclined surface around each heat exchange plate and its bottom plane. When the backing plate is assembled in the heat exchange plate, the backing plate with right-angled edges may be biased to a single position in the heat exchange plate. As a result, the right-angled edges around the backing plate may ride on the R connection transition between the inclined surface around the heat exchange plate and the bottom plane, which will cause the plane of the backing plate and the bottom plane of the heat exchange plate to be inconsistent. A good fit will cause problems in the sealing quality of the backing plate, and may cause the heat exchange medium to cross the cavity at the corner hole, causing the product to be scrapped

[0005] In addition, when the heat exchange device in the middle of the heat exchange plate is a fin structure, since the periphery of the backing plate shown in the patent (028286839) and (ZL2013205973605) is a right-angled edge structure, the backing plate and the heat exchange plate are assembled inside the heat exchange plate. When installing fins, because the material of the fins is very thin, the bottom edge of the fins will be inserted between the backing plate and the bottom plane of the heat exchange plate, which will also cause the plane of the backing plate and the bottom plane of the heat exchange plate to not be well aligned. It will also cause problems with the sealing quality of the backing plate, and it may also cause the heat exchange medium to pass through the cavity at the corner hole, resulting in the product being scrapped

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