SU1153221A1 - Heat exchanger - Google Patents

Abstract

HEAT EXCHANGER, comprising a housing and coaxially placed shchindriks in it, the formation of channels for air and LIQUID) and a device for cleaning a heat transfer surface, made in the form of scrapers connected to the drive of the purpose of intensification of heat exchange and increase of compactness - the cylinders are made with double walls and are open along the generators with the formation in the radial section of the slit in the form of a sector, under which the tray for collecting and removing soils is additionally installed, and the drive is scraper It is formed as a driven, mounted sides with cylinders, with reciprocating rotary motion and connected with scrapers by means of rods. (L

Description

The invention relates to the technique of ventilation and air conditioning and, in particular, to heat exchangers with direct heat transfer medium, used for heat recovery and cold in livestock buildings. The aim of the invention is to intensify heat transfer and increase compactness. FIG. 1 shows a heat exchanger longitudinal section; in fig. 2 is the same cross section in FIG. 3 node 1 in FIG. 1J in FIG. 4 - node P in FIG. 1. The heat exchanger contains a heat-insulated housing 1 with coaxial cylinders 2 inside, made with double walls for supplying heat transfer fluid and forming a series of annular channels 3 for supplying air open along the forming cylinders 2 to form 4 in the radial section in which tray 5 is installed to collect and remove soils. In each of the air supply channels 3, scrapers 6 are installed, connected by means of rods 7 with carriers 8 and 9 located on the two end sides of the coaxial cylinders on the drive shaft 10, executed with the possibility of reciprocating rotation to remove soils in the tray 5. The shaft 10 rests on two support bearings 11, mounted on the subsector 12 and outlet 13 collectors made in the form of hollow racks for supplying and discharging heat transfer fluid to each section of the coaxial cylinder 2. On the end side, the heat exchanger has ubki 14 and 15 for supply and discharge of process air. In order to intensify the heat exchange process, the heat transfer surface 1 of coaxial cylinders 2 have annular protrusions. The heat exchanger operates as follows. Warm air is supplied to the heat exchanger through the pipe 14 and enters the annular channels 3 formed by coaxial cylinders 2, between the double walls of each of which is supplied the heat-transfer fluid from the inlet manifold 12, which is then withdrawn through the heat exchanger. On the surfaces of the sections (walls of the coaxial cylinders 2) of heat exchange, heat and mass transfer occurs, as a result of which the coolant heats up and the air cools to form condensate, which traps dust and harmful gases in the air. The drive shaft 10, making reciprocating rotational oscillations by means of the carrier 8 and 9, provides counter-movement of the scrapers located in each of the annular channels 3, which clean the resulting contaminants from the surfaces of the coaxial cylinders. 2 and bring them to the slot 4, where these contaminants come from retracted to tray 5 and then taken to the sewer system of the room.

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Claims (1)

HEAT EXCHANGER, comprising a housing and cylinders coaxially placed in it, forming channels for air and liquid; and a device for cleaning the heat transfer surface, made in the form of scrapers connected to the drive; with the exception that, in order to intensify heat transfer and increase compactness, the cylinders are made with double walls and open along the generatrix with the formation in the radial section of a gap in the form of a sector, under which an additional tray for collecting and removing impurities is installed, and the scraper drive is made in the form of carriers, mounted on the end faces of the cylinders with the possibility of a reverse-rotational movement and connection nenny with scrapers by means of bars. (61) 1 1153221