RU182666U1 - HEAT GENERATOR - Google Patents

Abstract

The utility model relates to heat engineering, and specifically to heat generators, and is used in industry, construction and agricultural production, and is intended for air heating of industrial premises and supply of heated air to a grain dryer or other drying chamber, as well as for heating greenhouse areas in the winter season.

Improving the efficiency of the installation; reduction of annual maintenance and repair costs, including slag removal, replacement of thermal insulation; elimination of the disadvantages inherent in the above analogues; simplification of the design of the installation, which reduces labor costs during its manufacture, is achieved by the fact that the pipes of the heat exchange sections are combined into three successive groups and arranged in the form of wells according to the cartridge principle, and the outer surface of the combustion chamber has the shape of a six-angle prism, and a regulating damper with a vertical a wall with visors, to change the amount of air entering the heating and excluding the ingress of atmospheric precipitation, and on a gas-rotary box installed to the lugs of the ash removal channel for cleaning the heat exchange sections, and at the top of the heat exchange sections, access is provided for cleaning the pipes of the heat exchange sections with a ramrod.

The volume of the combustion chamber is designed to use local low-calorie coal, which reduces fuel transportation costs. Thus, the use of the proposed technical solution makes it possible to quickly start the heat generator and its heating in a few minutes. To improve the overall dimensions of the heat generator and increase its efficiency. A high coefficient of efficiency (85%) makes it possible to reduce heating costs due to the use of cheap fuel and maintaining a given temperature level in the room.

Description

The utility model relates to heat engineering, and specifically to heat generators, and is used in industry, construction and agricultural production and is intended for air heating of industrial premises and supply of heated air to a grain dryer or other drying chamber, as well as for heating greenhouse areas in the winter season.

The solid-fuel VT-600 air heater with a thermal power of 600 kW develops a pressure of 1000 Pa. At the same time, the temperature of the coolant reaches 120 ° C. The volume of air supplied during heating is 30 thousand m3 / h, the power of electric motors is 15 kW. The solid-fuel air heater VT-600 is intended for use as a heating source in industrial premises, as well as for supplying hot air to grain dryers or other devices, consisting of a cylindrical body, a combustion chamber with a loading door and a heat exchanger are placed inside. There are grates for loading fuel. In addition, a smoke pipe, transitional cone, fan, control unit base is mounted in the housing. The firebox (combustion chamber) is made of plate steel. For heating, various types of solid fuel are used: coal, firewood, briquettes from peat and sawdust (https://optshop.by/pl5509464-vozduhonagrevatel-tverdotoplivnyj-600.html).

The closest in technical essence is the air-heating installation AT-1,0, which is designed for air heating of industrial premises and supply of heated air to a grain dryer or other drying chamber. Fuel is loaded into the furnace space, the products of fuel combustion heat the walls of the combustion chamber and pass through the pipes of the heat exchanger into the chimney and then enter the atmosphere. Cold air is taken in by the fan, passes between the outer casing and is heated by removing heat from the combustion chamber and heat exchanger. Firewood, wood waste, peat briquettes are used as fuel. Rated thermal power - 1000 kW; Maximum heat carrier temperature - 120 ° С; The supply of heated air - 37000 m3 / h; Installed power of electric motors - 18.5 kW. The volume of the furnace (for loading fuel) is 2.21 / 2210 m3 / l. (http: //your kit.white/at-1-0.html).

The disadvantages of the VT-600 solid-fuel air heater and AT-1.0 air-heating installation are insufficient efficiency factors, the difficulty of maintenance (cleaning from ash, replacing the insulation), atmospheric precipitation in the heated air, and the complexity of manufacturing a cylinder-shaped combustion chamber body.

The technical problem, the solution of which is directed to the technical solution of the utility model, is:

- increase the efficiency of the installation;

- reducing the cost of annual maintenance and repair, including the removal of slag, replacement of thermal insulation;

- elimination of the disadvantages inherent in the above analogues;

- simplification of the design of the installation, reducing labor costs in its manufacture.

The volume of the combustion chamber is designed to use local low-calorie coal, which reduces fuel transportation costs.

The task is achieved in that the pipes of the heat exchange sections are combined into three successive groups and arranged in the form of wells according to the cartridge principle, and the outer surface of the combustion chamber has the shape of a six-angle prism, and a regulating damper with a vertical wall with visors is installed at the outlet of the heat generator to change the amount of incoming for heating the air and eliminating the ingress of atmospheric precipitation, and on the gas rotary duct the lids of the ash removal channel are installed for cleaning the heat exchange sections th, and at the top of the heat exchange sections, access is provided for cleaning the pipes of the heat exchange sections with a ramrod.

The figure shows a functional diagram of a heat generator.

The heat generator comprises a frame 1, a combustion chamber 2 for burning fuel and heating air, a loading window 3, a blowing window 4, a gas rotation box 5, an ash channel cover 6, an explosive valve 7, heat-volume sections 8, an exit window 9, a gate 10, an outer casing 11 regulating the shutter 12, the support bell 13, the upper technical covers 14, for cleaning the heat exchange sections 8 in the upper part of the heat generator using a ramrod.

The heat generator operates as follows. Before kindling the heat generator installed on the frame 1, the slide gate 10 of the output window 9 is fully opened. The control damper 12 is set to the middle position, the door of the blower window 4 is opened and the combustion chamber 2 of the heat generator is ventilated by natural draft for 5 minutes. For more technological optimization of the design, the outer surface of the combustion chamber 2 has the shape of a hexagonal prism. Turn on an external fan (not shown in the diagram) to ensure the circulation of heated air through the heat generator. Fuel is loaded into the combustion chamber 2 through the loading window 3 and combustion is maintained corresponding to the heat load of the heat generator. The combustion products heat the walls of the combustion chamber 2 and move into a gas rotary box 5, from which through the channel for the passage of heated air formed by the outer casing 11, enter the heat exchange sections 8, which are combined in three consecutive groups and arranged in the form of wells according to the cartridge principle, which allows to significantly simplify the process and reduce the time for their replacement, increase the amount of heat, thereby increasing the efficiency indicator. Next, the flue gases are taken from the support bell 13 and go into the atmosphere through the chimney. Cold air is sucked in by an external fan and heated, removing heat from the walls of the combustion chamber 2 and heat-exchange sections 8. Heated air is supplied through the outlet window 9 to the drying zone or heated room. The temperature of the air at the outlet of the heat generator is regulated by a regulating flap 12, which has a vertical wall with peaks that prevent atmospheric precipitation from entering the air entering the heating. The control flap 12 changes the flow of cold air into the heat exchange sections 8. The rate of combustion of the fuel in the combustion chamber 2 is changed by the amount of air entering the armrest space, changing the position of the blower door of the blower window 4. After the initial kindling, fuel is loaded into the combustion chamber 2 at regular intervals, not less than after 15-20 minutes. In the process of supplying heated air to a heated room, there is no direct contact between the combustion products and the heated air. To prevent the heat generator from collapsing in case of a possible explosion of coal dust in the gas rotary duct 5, an explosive valve 7 is installed. To remove ash and ash deposits in the first and second wells of the heat exchange sections 8, use the covers of the ash removal channel 6, there is also access for cleaning pipes of the heat exchange sections 8 in the upper part of the heat generator using a ramrod, for this it is possible to easily remove the support bell 13 and the upper technical covers 14.

Thus, the use of the proposed technical solution makes it possible to quickly start the heat generator and its heating in a few minutes. To improve the overall dimensions of the heat generator and increase its efficiency. A high coefficient of efficiency (85%) makes it possible to reduce heating costs due to the use of cheap fuel and maintaining a given temperature level in the room.

Claims (1)

A heat generator comprising a combustion chamber, a gas rotation box, heat exchange sections, characterized in that the pipes of the heat exchange sections are combined in three consecutive groups and arranged in the form of wells according to the principle of cassettes, and the outer surface of the combustion chamber has the shape of a hexagonal prism, a control damper is installed at the outlet of the heat generator, having a vertical wall with peaks, for changing the amount of air entering the heating and excluding the ingress of atmospheric precipitation, and on a gas rotary box the lid channel become ash removal for cleaning heat exchanger sections, wherein the top of the heat exchanger sections is provided access for cleaning pipes of heat exchange sections ramrod.

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