SU648823A1 - Plate heat exchanger - Google Patents

Description

I

This invention relates to heat exchangers, specifically plate heat exchangers.

Plate heat exchangers are known with channels arranged in parallel planes for the passage of working media and turbulent inserts placed inside ll.

However, the known heat exchangers have low rigidity, as well as different types of details in their design, which complicates the technology of their manufacture.

The purpose of the invention is to increase stiffness and improve manufacturing technology & laziness.

This is achieved in that the inserts are in the form of perforated plates in contact with one another with the mixing of the holes.

FIG. 1 shows the proposed heat exchanger, longitudinal section; in fig. 2 is a section A-A in FIG. one.

The heat exchanger contains channels located in parallel planes.

1 for the passage of working media with noMeuieH inside the turbulizing 1k; thrust 2. The inserts are made in the form of perforated plates in contact with each other with mixing holes 3. At the edge of the inserts 2 holes 3 are made in the form of slits 4 for the entrance of the medium and slits 5 for media from the system of channels 1 formed by flat plates 6 serving as heat transfer surfaces and inserts 2. Input 7 and output 8 collectors for the heated medium are formed by a gap between the housing 9 and the active part of the heat exchanger and are separated from the input th and output collectors gray medium deaf partitions.

The heat exchanger works in the following way.

The heated medium enters the collector 7 of which through the slots 4 is fed into the system of channels 1. The passage through the system of channels 1 of the heated “emara” through the slots 5 enters into the junction

collection 8 and out of the heat transfer to the ka. The heating medium moves analogs of the s-jbsM way by a crossover between alternating adjacent systems of channels 1 with the heated medium. In this way, symmetrical (two-sided) heating is provided, which intensifies the heat exchange and improves the heat exchanger's com- bility.

In view of the fact that the heat transfer in the middle: moving with a multi-jphagic change in the direction of flow and the hole in the bars is made with sharp edges and relative elongation, the boundary layer is destroyed. Pesly dry reduces thermal resistance, intensifies heat exchange between heat transfer media and heat transfer surfaces 3, thereby improving the heat absorption capacity of the heat mixer. Plates with. perforation have a high rigidity in the directions of norm 1 small 1 to heat transfer surfaces 51 ways to carry a large load, which makes it possible to use as a heat transfer material porhkornstvyy thin: yisgov pz material with high

thermal conductivity, supported on perforated plates. Thin heat transfer surfaces also lower the heat transfer coefficient

nick and improve compactness.

The manufacture of similar parts from sheet material and their assembly into a package forming the active part of the heat exchanger are highly technological, which improves the economic performance of the heat exchanger.

Claims (1)

1. USSR author's certificate No. 4О61О2, cl. F 28D 9 / GS, 1973.