CN200993401Y - Biomass compressed fuel cooking and heating dual-purpose stove - Google Patents

Abstract

A two-purpose oven for both cooking and heating with compressed organic fuel is provided, which is characterized in that the upper part of the oven tank contracts inward into a conic shape; between the outside of an oven tank and a water jacket, a circular air chamber is provided, the lower part of which is communicated with an ash chamber; the upper part of the oven tank is provided with a secondary air-in ring with an air-intake hole; the air-intake hole is communicated with the circular air chamber; at middle of the upper part of the oven tank, a fire-distributing cup that can scatter the flame toward the surrounding is provided; on the oven body, an automatic feeding box is provided; another end of the output tube of the feeding box is inserted into the oven tank. The flame of the utility model will first be concentrated above the oven tank, then is distributed by the fire-distributing cup into a circular shape; the flame mixes fully with the secondary air, so that the combustion is more complete. The utility model is especially suitable for heating and cooking in winter in households in suburbs, forestry areas and the countryside in the northern area.

Description

Biomass compressed fuel cooking and heating dual-purpose stove

technical field

The utility model relates to a small civil stove for burning solid fuel.

Background technique

Biomass compressed fuel is a new type of fuel that has emerged in recent years. It is a pellet or compressed block made of plant straw, wood chips, forest branches, etc., because this fuel is biomass and has a dense texture. , so the combustion efficiency is high. According to calculations, the calorific value of this biomass compressed fuel reaches 3800-4200kcal/kg, which is equivalent to ordinary coal. Biomass pellets as a fuel have good prospects for development due to their low sulfur content, complete combustion, and renewability. The main users of this kind of fuel should be the suburbs, forest areas and rural areas. These places have the advantages of local materials, local production, and local consumption. However, there is no suitable dual-purpose stove for cooking and heating for civilian use that burns compressed biomass fuel. .

Contents of the invention

The purpose of this utility model is to provide a dual-purpose stove for heating and cooking with biomass compressed fuel suitable for use in rural areas. As shown in the accompanying drawings, the utility model includes a barrel-type furnace shell, the middle part of the shell is a furnace, and there is a furnace outside the furnace. Water jacket, the water jacket outside the furnace is connected with the water jacket outside the furnace flue. There is a furnace grate under the furnace, and the ash chamber is below the furnace grate. It is characterized in that the upper direction of the furnace is converged into a cone shape, and there is a gap between the outside of the furnace and the water jacket. The annular space forms an annular air chamber. The lower part of the annular air chamber communicates with the ash chamber. There is a secondary air inlet tube above the furnace. In the middle of the cylinder, there is a fire distribution cup that can disperse the flame to the circumference. An automatic feeding box is fixed on the upper part of the furnace body. A screw pusher rod is arranged in the feeding box. The front end is connected to one end of the discharge cylinder, and the other end of the discharge cylinder is inserted into the furnace. The utility model can automatically inject fuel into the furnace through the feeding box, and the flame is gathered above the furnace and then divided into rings by the fire distribution cup, and the flame is fully mixed with the secondary air to make the combustion more complete. The water jacket is connected with the radiator through the pipeline, and the hot water is delivered to the indoor radiator to provide heating to the room. The utility model is especially suitable for heating in winter in northern rural families. The utility model is also provided with a manual feeding port on the furnace body for manual feeding, and a forced air supply port is set at the lower part of the furnace body, which can be equipped with a fan with a power of 20W to force the air supply.

Description of drawings

Accompanying drawing 1 is a front view of the utility model;

Accompanying drawing 2 is the utility model left view;

Accompanying drawing 3 is a top view of the utility model. Legend: 1. Manual feeding port (furnace door); 2. Furnace body; 3. Taper sleeve body; 4. Furnace chamber; 5. Secondary air inlet tube; 6. Annular fire baffle; 1. Furnace exhaust flue water jacket; 9. Ash chamber; 10. Feeding motor; 11. Screw pusher rod; 12. Automatic feeding box; 13. Flue duct; 14. Furnace grate;

Detailed ways

An annular fire baffle is set above the furnace, and the fire baffle near the smoke outlet is higher than the place away from the smoke outlet, so as to prevent the flame from being discharged from the smoke outlet prematurely. The furnace body is 650 mm high, the hearth is 320 mm high, and the upper cone is 130 mm high. The annular fire baffle is 400 mm high near the smoke outlet and 250 mm high at the lowest point. The fire-distributing cup is conical, 50 millimeters high, 90 millimeters in diameter at the bottom, and 40 millimeters in diameter at the bottom. There is an openable door in the ash chamber. After the door is opened, the primary air is supplied from the bottom of the ash chamber to the furnace, and the secondary air is supplied from the annular air chamber connected with the ash chamber to the top of the furnace. The motor power of the automatic feeding box is 45W, and the motor is equipped with a reducer to reduce the motor to 3.5 revolutions per minute. At this speed, the output speed of the feeding box is 3.2 kg per hour. This embodiment can supply heat to the room of 40-80 square meters.

Claims (3)

1. Biomass compressed fuel cooking and heating dual-purpose furnace, including a barrel furnace shell, the middle part of the shell is the furnace, and there is a water jacket outside the furnace. The water jacket outside the furnace is connected with the water jacket outside the furnace flue. Furnace grate, below the grate is the ash chamber, which is characterized in that the upper part of the furnace is gathered inwards into a cone shape, and there is an annular space between the outer side of the furnace and the water jacket to form an annular air chamber, the lower part of the annular air chamber communicates with the ash chamber, and there is a The secondary air inlet tube has an air inlet hole, and the air inlet hole communicates with the annular air chamber. A fire distribution cup body that can disperse the flame to the circumference is installed in the upper middle of the furnace, and an automatic feeding cup is fixed on the furnace body. A screw pusher rod is arranged in the feeding box, the lower part of the pusher rod is connected with the output shaft of the motor, the front end of the pusher rod is connected to one end of the discharge barrel, and the other end of the discharge barrel is inserted into the furnace. 2. The dual-purpose boiler for cooking and heating with compressed biomass fuel according to claim 1, characterized in that there is a manual feeding port on the furnace body. 3. The biomass compressed fuel cooking and heating furnace according to claim 1, characterized in that an annular fire baffle is set above the furnace.

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