Multi-medium plate heat exchanger

Abstract

The invention discloses a multi-medium plate heat exchanger, which is characterized in that a middle spacer is arranged and divides a corrugated baffle into two groups; a through hole is formed in the middle spacer corresponding to one through hole of the corrugate baffle; through holes are respectively formed in a front outer baffle and a rear outer baffle corresponding to other three through holes of the corrugated baffle; the edges of the front outer baffle, the corrugated baffle, the middle spacer and the rear outer baffle are connected in a brazing way; the edges of the through hole of the middle spacer and the corresponding through hole of the corrugated baffle are connected in the brazing way; the edges of the through holes of the front outer baffle and the rear outer baffle and the corresponding through holes of the corrugated baffle are connected in the brazing way; the edges of the corresponding through holes of the corrugated baffle are connected in the brazing way. According to the multi-medium plate heat exchanger, the front outer baffle, the corrugated baffle and the rear outer baffle are divided into two communicated heat exchange units through the middle spacer, so that the multi-medium plate heat exchanger has large heat exchange temperature difference and high heat exchange efficiency, is not limited by installation types, can be installed vertically and horizontally, meets the requirements of different installation environments, and is beneficial to widening the applicable range and field.

Description

technical field [0001] The invention relates to a heat exchange device, in particular to a multi-media plate heat exchanger with compact structure and high heat exchange efficiency. Background technique [0002] We know that the plate heat exchanger is a kind of heat exchange device with relatively high heat exchange efficiency. Plate heat exchangers are generally divided into two types. One is a detachable plate heat exchanger, which generally includes a front compression plate, a corrugated plate, a rear compression plate, fastening bolts and washers. The method of placing the gasket on the sheet is fastened, pressure-bearing, sealed, and then heat exchanged. The plate heat exchanger with this structure can only withstand lower working pressure and temperature, and the working reliability is also poor, and the volume is larger: the other is a welded structure pole heat exchanger, which has a front and outer The baffle, the multi-piece corrugated baffle and the rear outer...

AI Technical Summary

Problems solved by technology

The plate heat exchanger with this structure can only withstand lower working pressure and temperature, and the working reliability is also poor, and the volume is larger: the other is a welded structure pole heat exchanger, which has a front and outer The baffle, the multi-piece corrugated baffle and the rear outer baffle, the four corners of the front outer baffle, the rear outer baffle and the corrugated baffle are respectively provided with through holes, the front outer baffle, the rear outer The corrugated baffle is brazed at the edge to form alternating cold and hot medium channels. The edges of the through holes of the front outer baffle and the corrugated baffle are brazed with each other to form the liquid inlet of the first medium on the side of the front outer baffle. The other side of the front outer baffle forms the liquid inlet and liquid outlet of the second medium. This kind of heat exchanger has a compact structure, increased strength, and an enlarged working range; but its thermal , The design of the cold water channel and the external pipeline interface is unreasonable, and there are many restrictions on the use and installation of the product. Most of them can only be installed upright, otherwise the heat exchange effect will be very poor. The through hole of the front outer baffle is diagonally oppositely provided with the first medium liquid inlet, the liquid outlet and the second medium liquid inlet and liquid outlet, so as to form the cross first medium channel and the second medium channel , the thermal efficiency of this heat exchanger is high, and the installation position is not limited, but it can only exchange heat between one medium and another medium, and the temperature difference of heat exchange is small

Images