SU1483232A2 - Plate-type heat exchanger - Google Patents

Abstract

The invention relates to plate heat exchangers and allows intensification of heat exchange. The heat exchanger contains a package of flat sheets 1 alternating with corrugated sheets to form channels for working media. Flat plates 5 are installed at the exit and inlet of the channels along the midline of the corrugations of the corrugated sheets, and part of the channels between the tops of the corrugations and the plates 5 are plugged in a checkerboard pattern. Flat sheets 1 are provided with protrusions 7, extended beyond the package to the length of flat plates 5 and forming sections 8.9 with channels 10.11 for working media with the last ends of the package. Sections 8.9 at the ends are plugged, and on the sides are provided with removable flaps 12 installed in a checkerboard pattern. In channels 10, 11 of sections 8, 9, guides 13 are additionally installed, having opposite direction of bending in adjacent channels 10, 11. The invention makes it possible to intensify heat exchange by using the surfaces of flat plates 5 that are extended beyond the package of projections 7 of sheets 1. 2 h. the item of f-ly, 4 ill.

Description

The invention relates to a plate heat exchanger and is an improvement of the invention according to the author. No. 661227о

The circuit of the invention is the intensification of heat exchange,

Fig, 1 shows a heat exchanger, B1SCH side; Fig. 2 is the same, top view (top flat sheet is removed); on fng.Z - section A-A {guides conventionally not shown) in fig.} pa pa phpg., section 4 bb in fig.1.

The heat exchanger contains a package in the form of alternating flat and corrugated sheets 1 and 2, forming channels 3 and 4 for working media. At the entrance and exit of channels 3 and 4, flat plates 5 are installed along the line of corrugations of sheets 2, and channels 3 and 4 are installed, between the corrugations of the corrugations and plates 5, in a staggered order. The plugs 6 form two channels 3 and 4 that are isolated from each other and extend on either side of the plates 5.

h Flat sheets 1 are provided with protrusions 7, extended beyond the package to the length of flat plates 5 and forming sections 8 and 9 with channels 10 and II for working media with the last ends of the package. Sections 8 and 9 are closed at the ends, and along the sides are provided with removable flaps 12 installed in a checkerboard pattern. In channels 10 and 11 of sections 8 and 9, additional guides 13 are installed, having opposite bending directions in adjacent channels 10 and 11.

The heat exchanger works as follows

Q

50

five

0

five

0

The fluids are fed to the channels 10 and 11 of sections 8 and 9 which are not shut off by the flaps 12 and, moving them counter-current with a change of direction by 90, exchange heat through the flat plates 5 and the projections 7 of the sheets 1.

Next, the working medium flows in countercurrent to channels 3 and 4 formed by plugs 6 and exchange heat through flat and corrugated sheets 2.

Claims (3)

1. Plate Heat Exchanger on auth. No. 661227, characterized in that, in order to intensify heat exchange, flat sheets are provided with protrusions extended beyond the package to the length of flat plates and forming sections with working media for the latter on the package ends. 2. Heat exchanger according to claim 1, characterized in that the sections at the ends, they are plugged and provided on the sides with removable flaps installed in a checkerboard pattern. 3. Heat exchanger according to claims 1 and 2, characterized in that in the section channels additional guides are installed, having opposite bending directions in adjacent channels. FIG, I H  X /. /to..-  V 4sy + ss / + x / u j- + / / / (+ u jh 4gsy + / b y / + U + U + + H $ Y + H P Aa / / Rie. 3 1 2 5 12 V 6-5 AU / L: zs2szs ,, lv vav / a: $ #. Do / Z