UA141157U - SOLID FUEL BOILER ON BULK ORGANIC FUEL - Google Patents

Abstract

Solid fuel boiler on bulk organic fuel, consisting of a housing and a frame. On the frame on the sensors of the weighing mechanism there is a furnace, in which at the bottom there are a number of holes for ash removal, and on the inner side there are holes-slits for fresh air to the combustion zone from the fan, which also supplies fresh air to swirlers located in the top of the furnace. In the central part of the furnace there is an opening for the auger, which is located in the heat-insulating casing, in the upper part of which a protective valve is movably installed to protect the fuel, which is located between the screw surfaces of the auger. Through the loading neck, the bulk fuel is fed into the storage hopper and can enter the screw space between the screw through the hole. The auger is driven by the motor, which is mounted at the bottom. Under the furnace there is a container for removing ash and for removing it in the lower part of the case there is a special door. In the upper part of the boiler above the furnace there is a heat exchanger with pipes for flue gas removal, in front of which there is a door for ignition, and in the back there are cold and heated water pipelines. Above the heat exchanger is a cone for removing flue gases in the flue.

Description

The useful model belongs to heating devices that work on solid fuel and can be used for heating residential and other premises, as well as for hot water supply.

The nearest analogue of the useful model is a heating boiler (invention patent Mo 82275, IPC (2006) E24Н 1/08, publ. 25.03.2008, Byul. Mo 6, 2008), which contains a case with gas discharge channels, a heat exchanger, a gas pipe and a camera combustion of fuel, which has a deflector plate, a grate and a grate chamber, with a fuel supply mechanism from a bunker, the deflector plate is made in the form of two ceramic planes, installed between them with a horizontal "roof" with an angle between them ranging from 280 to 340", and the gas outlet channels are placed vertically.

The disadvantage of this boiler is that the installation of a baffle plate will not allow to fully use the energy of infrared radiation for heating the coolant. In addition, in the combustion zone of this boiler, it is difficult to achieve complete combustion of raw materials in various combustion modes, especially those close to maximum power. This is due to the fact that the high speed of air supply in this mode of combustion will carry unburned residues that will settle on their surface into the gas exhaust channels.

The basis of the useful model is the task of increasing the efficiency of fuel combustion in solid fuel boilers using loose organic fuel (pellets, wood chips, sawdust, etc.) by creating favorable conditions for the controlled, turbulent combustion of combustible gases in the boiler combustion zone.

The task is solved by the fact that in a solid-fuel boiler on bulk organic fuel (pellets, wood chips, sawdust, and the like), which consists of a body with a frame, on which the sensors of the weighing mechanism are mounted, in which a number of holes are placed in the lower part for removing ash, and on the inner side there are holes-slits for supplying fresh air to the combustion zone from the fan, which also supplies fresh air to swirlers located in the upper part of the furnace, which serve to swirl the flame, better mixing of combustible gases with air and their effective burning, increasing the height of the flame and thereby increasing the area affected by infrared radiation from the flame. In the central part of the horn there is a hole for an auger, which is located in a heat-insulating jacket, in

From the upper part of which, to protect the fuel, which is located between the screw surfaces of the auger, a safety valve is movably installed. Through the loading neck, the bulk fuel is fed into the storage hopper and can enter through the opening into the screw space of the auger, the auger is driven by a motor that is fixed in the lower part. A container for removing ash is placed under the furnace, and for its removal there is a special door in the lower part of the case. In the upper part of the boiler, above the furnace, there is a heat exchanger with pipes for removing flue gases, in front of which there is a door for kindling, and in the back pipelines of cold and heated water are connected. A cone is fixed above the heat exchanger for removing flue gases into the flue.

The essence of a useful model is explained by drawings.

A solid fuel boiler on bulk organic fuel is shown in fig. 1 general front view, fig. 2 general rear view, fig. From the top view, fig. 4 section AA, fig. 5 section B-B, fig. 6 section B-B, fig. 7 section G-G.

A solid fuel boiler on loose organic fuel consists of a body 1, a frame 2, a furnace 3, holes for ash removal 4 and fresh air supply 5, swirlers with holes 6, a fresh air supply chamber 7, a fan 8, an opening for an auger 9, an auger 10, electric motor 11, protective valve 12, thermal insulation casing 13, fuel storage hopper 14 with opening 15, ash removal container 16, heat exchanger 17 with flue gas removal pipes 18, ignition door 19, cold water 20 and heated water pipelines 21 , loading neck 22, door for removing ash 23, sensors of the weighing mechanism 24, cone for removing flue gases 25.

The principle of operation of a solid fuel boiler on bulk organic fuel is as follows. Loose organic fuel (pellets, chips, sawdust) (see Fig. 4) is fed into the fuel storage hopper 14 through the loading neck 22 until it is completely filled. After that, the fuel enters through the opening 15 to the inter-screw space of the screw 10, which is driven into a rotary motion by 60 of the electric motor 11. The fuel captured by the screw surface moves upwards along the turns of the screw, until it comes into contact with the lower surface of the safety valve 12, which serves to prevent the ingress of combustible fuel back into the interscrew space. The fuel moving upwards will raise the safety valve until the bulk fuel begins to fall over the heat-insulating jacket 13 on the hopper 3. The fuel will be poured until the weight of the fuel on the hopper is optimal and this will be recorded by the sensors of the weighing mechanism 24 ( see Fig. 6). After that, the combustion control system (not shown in the drawings) will rotate the screw in the opposite direction, the fuel will drop down and the valve will be in the closed position, preventing the flame from entering the interscrew space.

Ignition is carried out through the ignition door 19. Fresh air is supplied by the fan 8 through the fresh air supply chamber 7 to the fresh air supply holes 5 and swirlers with holes 6. The combustion control system can regulate the intensity of combustion by changing the frequency of rotation of the fan blades, thereby supplying more or less air into the combustion zone. Due to the fact that fresh air is supplied from the fresh air supply holes 5 of swirlers 6 and tangentially to the inner cylindrical surface, the mountain flame burns and rises upward along the spiral path along the walls of the heat exchanger 17.

Vortexers 6 serve for better swirling of the flame (turbulent combustion of combustible gases along a spiral trajectory), better mixing of combustible combustible gases with air and their effective combustion, increasing the height of the flame and thereby increasing the area affected by infrared radiation from the flame I. The heated gases rise uphill, heating the upper part of the heat exchanger 17, pass through the flue gas removal pipes 18 and are removed into the chimney through the flue gas removal cone 25.

Cold water is supplied from the cold water pipeline 20, heated from the walls of the heat exchanger, supplied to hot water consumers through the heated water pipelines 21.

The advantages include the high efficiency of fuel combustion in a solid fuel boiler on bulk organic fuel due to the creation of optimal conditions for the controlled, turbulent combustion process of combustible gases in the combustion zone of the boiler.

Claims (1)

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