SU549650A1 - Mobile heat generator - Google Patents

Description

(54) MOBILE HEAT GENERATOR

The invention relates to air heaters. P may be used in the microclimate systems of livestock and poultry houses, storage facilities for agricultural products, essences, in construction, during heating and ventilation of industrial premises.

Air heaters are known that contain a cornus, a combustion chamber, a heat exchanger, fuel combustion devices and a fan, and the heat exchange surfaces are a series of pipes that are heated in a combustion chamber that is cylindrical with a flat bottom. partially unburned fuel mixture, moving along the wall of the combustion chamber, forms stagnant zones in the corners, which significantly reduces the heat transfer coefficient and leads to an increase in heat transfer surfaces, by weight overall dimensions of the air heater, and the efficiency of the air heater decreases. In addition, the technology of making tubular heat exchanging surfaces is rather complicated, and during operation of the air heater, a layer of conotis accumulates on the pipes, which significantly reduces the efficiency of the air heater.

Also known is a mobile heat generator, the contents of the housing with a coaxially exchanged coaxially with it ring heat exchanger with a turbulizing spacer.

This device is the most important to the invention but the technical essence

and the achieved result.

The disadvantage of such a heat generator is low heat exchange between the walls of the furnace with turbulizing spacers and heated air meters.

The aim of the invention is to intensify heat transfer.

This goal is achieved by the fact that the irons are set along the shape of the heat exchanger and have a wave-like shape with

the formation of alternating confused-diguser channels.

The drawing shows a heat generator in longitudinal section.

Tenloheperator contains corn /, annular heat exchanger 2, burned chamber 1 3, the outer surface of which is attached to turbulent spacers 4. Burner 3 is placed in the chamber from the side opposite to the thin-burning device 5, flame defrost 6 is made in the chamber, truncated cone. The fan 7 is connected to the inlet 8. At the end of the outlet 9, there are guide vanes W. The heat exchanger 2 has annular gaps / 7 and 12 for the passage of air and the node V .is

  V

: e no smoke to pipe 13 for the exit of flue gases. The fan 7 serves air simultaneously to the fuel-burning device 5, where the formation of a combustible mixture takes place, and to the gaps 11, 12 for heating. The hot gases, reaching the bottom, and 14, are turned in the direction opposite to the original movement, and directed to the annular heat exchanger 2, and then to the pipe 13.

The air heats up, the passage through the annular gaps // and 12. In the annular gap 11 there are turbulators spacers 4, attached to the outer surface of the combustion chamber 3, made in the form of undulating plates, and adjacent plates form alternating confusion-diffuser channels. In the confused part of the channel, an increase in the speed of movement washing the air surface occurs. In the diffuser cross section, the air velocity decreases. The alternation of confused-diffuser sections along the length of the gap 11 leads to additional turbulization of air flow, and, consequently, to the intensification of heat transfer.

The air passed through the gaps 11 12, gets into the outlet nozzle and with the help of guide vanes 10 partially and directs 01 and So3d (if

549650

from the hottest point of the combustion chamber 14. In this case, there is an intense heat removal from the bottom M. The blades 10 are fixed in such a way that they can move relative to the location fixed, while changing the gap between the bottom 14 of the combustion chamber and the surface of the blade 10. Thus , you can increase or decrease the air flow rate and its temperature.

Formula and 3 about b and e and

A mobile heat generator, comprising a housing with an axial combustion chamber and a ring-shaped heat exchanger coaxially coaxial with it, with turbulizing spacers inside, which, in order to intensify heat exchange, spacers are located along the heat exchanger and have a wavy form with the formation of alternating confused-diffuser channels.

Sources of information taken into account in the examination:

1. Author's certificate N ° 233204, F 24 N 3/02, 1969.

2. Author's certificate No. 151633 F 26 V 23/02, 1962.

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