SU473044A2 - Corrugated insert for plate heat exchanger - Google Patents

Description

one

This is true for heat engineering.

According to the main author. St. No. 336489, a known corrugated insert for a plate heat exchanger with corrugations, for example, a triangular, rectangular profile and parallel channels for one of the heat exchanging media; On the ribs of the corrugations along the flow of the stream, several rows of bilateral asymmetrical undercuts are formed, forming in adjacent channels correspondingly tapering and expanding portions to provide throttling and subsequent flow widening in each channel.

The purpose of the acquisition is to intensify heat transfer. This goal is achieved by the fact that the undercuts are made with cut off vertices, forming flow-through windows connecting adjacent channels, and cut-offs of the vertices lie in a plane parallel to the surface of the corresponding ribs, ditch; grooves and adjacent ipe6pax corrugations are arranged in a checkerboard pattern; smooth ribs are located between the ribs having undercuts.

FIG. Figure 1 schematically shows a corrugated insert on the inlet side of the coolant; in fig. 2 - insert in the plan; “And FIG. 3, 4 - the same options.

The corrugated insert is a corrugated plate 1 triangular or

Rectangular profile On the ribs of the corrugations along the flow of the medium, several rows of two-sided recesses 2 and 3 were made with cut-off vertices forming flow-through windows 4 and 5. Sections of the vertices lie in a plane parallel to the surface of the corresponding ribs of the corrugations. In order to obtain the most favorable results, it is desirable to use channels with a profile characterized by a ratio in corrugated inserts. The corrugated insert can be made in such a way that smooth fins 6 are placed between the ribs having undercuts. The best effect of heat transfer intensification can be expected in such an insert while observing certain geometrical ratios:, 75h-0.95 and / d,

where d is the hydraulic diameter of the narrowed section of the channel;

D is the hydraulic diameter o of the closed channel;

S - step of notches along the channel; h is the height of the corrugation; t - corrugation pitch.

Subject invention

Claims (3)

1. Corrugated insert according to the author's 30 certificate jV 336489, different from In order to intensify the heat exchange, the undercuts are made by cut cut-outs, forming flow-over windows connecting adjacent channels, and cut-off peaks lie in a plane parallel to the surface of the corresponding ribs of the corrugations. 2. The insertion of claim 1, wherein the undercuts on the adjacent edges are arranged in a checkerboard pattern. 3. The insert according to claim 1, characterized in that smooth edges are located between the ribs having undercuts.  five 3 5