Plate-type heat exchanger with low current-resistance at angled hole and secondary sealing groove

Abstract

The invention relates to a board type exchanger that has low flow resistance at the flute of angle hole and second sealing. The feature is that the layer location of flute bottom layer bearing sealing spacer is different between different group angle hole sealing structure and corresponding angle hole second sealing structure. When the heat exchanging board stacking together, the interval channel height between boards formed by angle holes sealing spacer flute and corresponding second sealing spacer flute exceeds the height of buckle ripple. Thus, the flow resistance would be decreased.

Description

technical field [0001] The invention relates to a plate heat exchanger, in particular to a plate heat exchanger sealed with a sealing gasket. Background technique [0002] This kind of plate heat exchanger is assembled with several roughly rectangular or square and other shaped heat exchange plates. The heat exchange plates are sealed with sealing gaskets. Structure, the heat exchange structure on some heat exchange plates is composed of regular concave-convex support ribs, and the heat exchange structure on some heat exchange plates is composed of corrugations; [0003] There are four corner hole sealing structures at both ends of the heat exchange structure on each heat exchange plate and correspond to the four corner hole secondary sealing structures. These four corner hole sealing structures and the corresponding four corner hole secondary sealing structures The structure is composed of two groups of pairs, and the two corner hole sealing structures of each pair and the...

AI Technical Summary

Problems solved by technology

[0005] The disadvantage of the plate heat exchanger manufactured by the prior art is that in the sealing structure of the four corner holes on the heat exchange plate and in the secondary sealing structure of the corresponding four corner holes, its supporting sealing gasket The layers at the bottom of the grooves are all the same. When the heat exchange plates are stacked one by one, the plates at the grooves of the sealing gaskets in each corner hole and the corresponding grooves of the secondary sealing gaskets The height of the inter-runner channel is only the height of a concave-convex corrugation. Since the length of the expansion line of the groove of the corner hole sealing gasket and the groove of the secondary sealing gasket is limited, the flow cross-sectional area between the plates formed by the length of the line and the height of a corrugation is obviously smaller than that of the replacement The flow cross-sectional area between the plates is formed by the width of the heat exchange structure on the heat plate and a corrugation height, so there is only one concave-convex corrugation height at each corner hole sealing gasket groove and at the corresponding secondary sealing gasket groove The flow cross-sectional area between the plates will generate greater fluid resistance to the heat exchange medium

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