SU1478030A1 - Plate-type heat exchanger - Google Patents

Abstract

The invention relates to heat engineering and reduces the hydraulic resistance of the heat exchanger and regulates the heat output by changing the flow pattern of the medium. The heat exchanger contains a package of plates 1 with a heat exchange surface and openings along the edges forming collectors when combined. The plate pack is placed between the clamping plates 6 and provided with nozzles 7.8 for the supply and removal of media. One of the collectors is provided with a thin-walled screen adjacent to the walls of the holes on the part of their perimeter on the side opposite to the surface. The screen is provided with transverse partitions to cover the holes. This embodiment prevents the passage of coolant to the upper part of the collector, where a stagnant zone is formed. 1 hp f-ly, 4 ill.

Description

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The invention relates to heat engineering, namely to the arrangement of plate heat exchangers, and can be used in various industries.

The purpose of the invention is to reduce the hydraulic resistance and regulate heat conduction by changing the flow pattern. Figure 1 shows a plate heat exchanger, a general view; 2 shows the pressure plate, left view; on fig.Z - hole plate with a thin-walled screen; figure 4 - section aa in figure 3.

The plate heat exchanger contains a package of plates 1 with a heat exchange surface 2 and openings 3 along the edges forming the collectors 4 and 5. The package of plates 1 is placed between the clamping plates 6 and provided with inlets 7 and outlet 8 fluids. At least one of the collectors 4 is provided with a thin-walled screen 9 adjacent to the walls of the openings 3 of the plates 1 on a part of their perimeter on the side opposite to the heat exchange surface 2. The thin-walled screen 9 is additionally provided with transverse partitions 10 to block the openings 3 of the plates 1.

The plate heat exchanger works as follows.

The coolants flow through the corresponding connections 7 to the respective collectors 4 of the heat exchanger, move along the heat exchange surface 2 of the plates 1 from different sides, exchange heat and exit the heat exchanger through the corresponding connections 8.

Placing at least one of the collectors 4 of a thin-walled screen 9 adjacent to the walls of the openings 3 of the plates 1 on the part of their perimeter on the side opposite to the heat exchange surface 2 prevents the passage of the coolant to the upper part of the collector

4, where a stagnation zone is formed, and thereby reduce the hydraulic resistance of the collector. Supplying the thin-walled screen 9 with transverse partitions 10 allows to block

5 part of the holes 3 of the plates 1 and change the flow pattern of the coolant in the package. In this way the heat output of the heat exchanger is regulated.

Claims (2)

0 claims 1, A plate heat exchanger containing a stack of plates with a heat exchange surface and openings along the edges forming when aligned collectors, located between the clamping plates and provided with media inlet and outlet connections, characterized in that, in order to reduce the flow resistance, 0, at least one of the collectors is provided with a thin-walled screen adjacent to the walls of the plates' openings on a part of their perimeter on the side opposite to the heat exchange surface. 2. The heat exchanger according to claim 1, in which, in order to control the heat production by changing the flow pattern of the medium, the screen is additionally provided with transverse partitions to block the openings of the plates. Editor I. Derbak Compiled by M.Golovkov Tehred M. Khodanych Proofreader I. Musk Order 2351/39 Circulation 570 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Fi, g.2 Aa Fig.Subscribe