SU1663370A1 - Heat exchanger - Google Patents

Abstract

The invention can be used in plate heat exchangers. The purpose of the invention is to increase efficiency. The heat exchanger includes a housing 1, a corrugated partition 2, collectors 3, 4. In the gap between the tops of the corrugations of the partition 2 and the wall of the housing 1 a spacer 5 is installed, made in the form of a corrugated plate with corrugations perpendicular to the corrugations of the partition 2, or from metal felt. When the number of heat carriers is greater than two, the partition 2 is made multi-layered from a set of corrugated sheets. Coolants flow and are discharged through the manifolds 3, 4 and exchange heat through the walls of the partition 2. Spacer 5 plays the role of distribution hydraulic resistance in the gap between the housing 1 and the spacer 2. 1 cff, 8 Il.

Description

ig.1

The invention relates to heat engineering and can be used in plate heat exchangers.

The purpose of the invention is to increase efficiency.

1 shows a heat exchanger, a general view; figure 2 - the partition of the heat exchanger; on fig.Z - connection of the edge edges of the partition; figure 4 - the connection of the partition with the case; FIG. 5 shows a three-flow heat exchanger with a two-layer partition; FIG. figure 6 - scheme for supplying heat exchangers of a three-flow heat exchanger; figure 7 is a section aa in figure 6; Fig.8 - section BB in Fig.6.

The plate heat exchanger consists of a body 1, partition walls 2 installed therein, manifolds 3 and 4. The end edges 5 of partition 2 are hermetically sealed, for example, by a weld. In the gap between the tops of the corrugations of the partition 2 and the housing 1, a spacer 6 is installed, made of metal felt or in the form of a corrugated plate with corrugations perpendicular to the corrugations of the partition 2. The partition 2 can be made of multilayer, consisting of slotted 7 channels. The connection of the end edges of the multilayer walls shown in Fig.7.

The heat exchanger operates as follows.

The fluids are brought in and out through the manifolds 3 and 4. The flux of the fluids can be organized by the flow and counter flow. Heat transfer takes place through the walls of the partition 2. In the case of

A three-flow heat exchanger - one working medium can be supplied through end headers, and the other two - through side collectors (Figures 6 and 8).

The presence of the partition 6 allows to reduce the flow of coolant along the gap between the housing 1 and the partition 2, without interfering with the flow of coolant across the gap required for reliable operation of the heat exchanger. As a result, most of the coolant enters the area of the most efficient heat exchange, located between the corrugations of the partition 2. The implementation of the partition 2 of the multilayer allows heat exchange between several (more than two) heat carriers.

Claims (2)

1. A plate heat exchanger comprising a housing and a partition mounted therein with a gap with rectangular corrugations forming channels for heat exchanging media, characterized in that, in order to improve efficiency, a spacer made of metal felt is additionally installed in the gap in the form of a corrugated plate with corrugations perpendicular to the corrugations of the partition. 2. A heat exchanger according to claim 1, characterized in that, in order to carry out heat exchange between several heat carriers, the partition is made of a multi-layer one consisting of sheets installed with a gap to form slotted channels. FIG. 2 Fig.Z 4 GO Aa figl 6-6 I j FIG. eight