Combustion equipment integrating heating cooking and tail gas treatment in high altitude area

Abstract

The utility model provides combustion equipment integrating heating cooking and tail gas treatment in a high-altitude area, and relates to the field of combustion equipment for residents in plateau high-altitude areas. The combustion equipment comprises a cooking bench, a furnace bottom, a heat preservation layer, a furnace pipe, a grate and an ash recovery box, a feeding port is formed in the middle of the cooking bench, a secondary combustion chamber is reserved between the furnace pipe and the heat preservation layer, a primary smoke exhaust pipe is arranged over the cooking bench and is a snail shell-shaped variable-section spiral pipeline, and the spiral pipeline is tightly connected layer by layer to form a conical cover structure. The lower end of the primary smoke exhaust pipe is connected with the furnace pipe and communicated with the hearth area, the upper end of the primary smoke exhaust pipe is connected with a smoke collection circulating pipe which is communicated with the lower portion of the secondary combustion chamber, and a secondary smoke exhaust pipe is arranged on the upper portion of the heat preservation layer and communicated with the secondary combustion chamber. The utility model solves the problems that the existing combustion equipment is low in combustion efficiency, low in heat collection degree and poor in heat dissipation effect, and exhaust tail gas has great influence on the environment, and is suitable for cooking and heating of residents in high-altitude areas.

Description

Technical Field

[0001] The utility model relates to the field of combustion equipment for residents in plateau and high-altitude areas, in particular to a combustion equipment integrating heating, cooking and exhaust gas treatment in high-altitude areas. Background Art

[0002] Oxygen is scarce in high-altitude areas of the plateau, and the fuel cannot receive sufficient oxygen support during the combustion process, resulting in incomplete combustion. The chemical energy of the fuel cannot be fully converted into heat energy. Some of the fuel fails to release all of its heat energy and is lost in the form of incomplete combustion, resulting in reduced fuel thermal efficiency, reduced energy output of the combustion equipment, and decreased operating efficiency. Incompletely burned fuel can also cause flame instability during the combustion process, resulting in flickering and flameout, affecting the stable operation of the combustion equipment and reducing its operating efficiency. Incompletely burned fuel also forms carbon deposits and coke inside the combustion equipment, adhering to the surface and interior of the combustion equipment, affecting heat transfer and fuel combustion. Long-term accumulation can lead to reduced performance of the combustion equipment, reduced operating efficiency, and even damage. At the same time, a single combustion often cannot completely burn the fuel. Incompletely burned fuel produces a large amount of harmful oil smoke and exhaust gas, affecting the surrounding environment and human health.

[0003] Through investigation of the current market and existing combustion equipment, it was found that the existing combustion equipment has some defects when used under the special climatic conditions of high-altitude plateau areas, specifically low energy utilization, low thermal efficiency, inability to fully utilize local resources, and greater pollution to the local environment. Summary of the Invention

[0004] This utility model addresses the aforementioned shortcomings of existing combustion equipment in high-altitude plateaus and provides a combustion device that integrates heating, cooking, and exhaust gas treatment in high-altitude areas. This combustion device is energy-efficient and environmentally friendly, making it suitable for cooking and heating in high-altitude areas. It solves the problems of existing combustion equipment, such as low combustion efficiency, low heat collection, poor heat dissipation, and significant environmental impact of exhaust gas.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a combustion device which integrates heating, cooking and exhaust gas treatment in high altitude areas, including a stove top and a stove bottom, a heat-insulating layer is arranged between the stove top and the stove bottom, a furnace core is arranged inside the heat-insulating layer, a grate is arranged at the bottom of the furnace core, an ash recovery box is arranged at the furnace bottom, a feeding port which is communicated with the furnace area inside the furnace core is arranged in the middle of the stove top, a secondary combustion chamber is left between the furnace core and the heat-insulating layer, a primary smoke exhaust pipe is arranged directly above the stove top, the primary smoke exhaust pipe is a snail shell-shaped variable-section spiral pipe, the spiral pipes are tightly connected layer by layer to form a conical cover structure, the lower end of the primary smoke exhaust pipe is connected to the furnace core and the furnace area, the upper end thereof is connected to a smoke collection circulation pipe, the smoke collection circulation pipe is communicated with the lower part of the secondary combustion chamber, a secondary smoke exhaust pipe is arranged on the upper part of the heat-insulating layer and is communicated with the secondary combustion chamber.

[0007] Furthermore, a smoke exhaust fan is installed in the inner cavity at the top of the primary exhaust pipe to collect and discharge the smoke generated by the primary combustion in the furnace and the oil smoke generated during cooking into the secondary combustion chamber. The internal space formed by the conical cover structure inside the primary exhaust pipe is used to heat and bake the food to be cooked, fully utilizing the heat radiation and convection carried by the smoke. This process improves fuel combustion efficiency and is more environmentally friendly.

[0008] Furthermore, a plurality of ventilation holes are provided on the furnace wall to provide combustion support conditions for the fuel in the furnace.

[0009] Furthermore, the furnace wall is a cylinder with spiral patterns, which increases the surface area of the furnace wall, thereby increasing the contact area between the flue gas and the furnace wall during secondary combustion and making the combustion more complete.

[0010] Furthermore, the inner diameter of the connection part between the lower end of the primary smoke exhaust pipe and the furnace is gradually reduced to reduce the internal pressure of the top of the furnace, so that the flame is more concentrated and the stove above is heated more evenly.

[0011] Furthermore, the insulation layer includes a sand layer attached to the furnace shell and the inner wall of the furnace shell. This design can increase the heat collection effect and reduce heat loss.

[0012] Furthermore, the side wall of the furnace bottom is provided with ventilation holes, which are located between the grate and the ash recovery box to better provide combustion support conditions for the furnace area.

[0013] Furthermore, the outer diameter of the secondary combustion chamber between the furnace core and the sediment layer gradually decreases from the bottom end to the top end, thereby increasing the heat collection effect of the secondary combustion chamber.

[0014] Furthermore, an activated carbon filter is provided inside the secondary smoke exhaust pipe, and the activated carbon filter adopts a plate, spherical or conical structure.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are:

[0016] 1. The utility model circulates the primary combustion exhaust gas in the furnace through the primary exhaust pipe and the smoke collection circulation pipe to the secondary combustion chamber, relies on the heat of the furnace wall to carry out secondary combustion, and then discharges the secondary combustion exhaust gas, avoiding the problem that the fuel cannot be completely burned by only one combustion in high-altitude plateau areas. At the same time, the primary combustion exhaust gas is reused for the second time, thereby improving the combustion heat utilization rate, and improving the heat collection effect and emission reduction benefits.

[0017] 2. The primary smoke exhaust pipe of the utility model adopts a snail shell-shaped variable-section spiral pipe. The variable-section design adds a certain degree of obstruction to the discharge of exhaust gas, which slows down the flow speed of exhaust gas with a certain amount of heat, and transfers heat to the outside to achieve a heating effect; and the spiral pipes are tightly connected layer by layer to form a conical cover structure, and the inner side of the conical cover forms a secondary heating and baking area for food, which solves the problems of low combustion efficiency, low heat collection, poor heat dissipation effect, and large impact of exhaust gas on the environment in existing combustion equipment. It is suitable for cooking and heating for residents in high-altitude areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a combustion device that integrates heating, cooking and exhaust gas treatment in high altitude areas according to the present invention;

[0019] Figure numerals: 1-stove, 101-feeding port, 2-insulation layer, 201-furnace shell, 202-mud and sand layer, 3-furnace bottom, 301-ventilation hole, 4-grate, 5-furnace core, 501-ventilation hole, 6-ash recovery box, 7-primary exhaust pipe, 8-exhaust fan, 9-smoke collection circulation pipe, 10-secondary exhaust pipe, 11-activated carbon filter. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1As shown, the utility model provides a combustion device that integrates heating, cooking and exhaust gas treatment in high-altitude areas, including a stove 1 and a furnace bottom 3. An insulation layer 2 is arranged between the stove 1 and the furnace bottom 3, a furnace 5 is arranged inside the insulation layer 2, a grate 4 is arranged at the bottom of the furnace 5, and an ash recovery box 6 is arranged at the furnace bottom 3. A feeding port 101 is arranged in the middle of the stove 1 and is connected to the furnace area inside the furnace 5. A secondary combustion chamber is left between the furnace 5 and the insulation layer 2. A primary smoke exhaust pipe 7 is arranged directly above the stove 1. The primary smoke exhaust pipe 7 is a snail shell-shaped variable-section spiral pipe. The spiral pipes are tightly connected layer by layer to form a conical cover structure. The lower end of the primary smoke exhaust pipe 7 is connected to the furnace 5 and is connected to the furnace area, and the upper end is connected to the smoke collection circulation pipe 9. The smoke collection circulation pipe 9 is connected to the lower part of the secondary combustion chamber, and a secondary smoke exhaust pipe 10 is arranged on the upper part of the insulation layer 2 to be connected to the secondary combustion chamber.

[0022] Specifically, a smoke exhaust fan 8 is installed within the top inner cavity of the primary exhaust pipe 7 to collect and discharge the smoke generated by the primary combustion in the furnace 5 and the oil smoke generated during cooking into the secondary combustion chamber. The internal space formed by the conical cover structure within the primary exhaust pipe 7 is used to heat and bake the food to be cooked, fully utilizing the heat radiation and convection carried by the smoke. This process increases fuel combustion efficiency and is more environmentally friendly.

[0023] Specifically, a plurality of ventilation holes 501 are provided on the wall of the furnace 5 to provide combustion support conditions for the fuel in the furnace 5 .

[0024] Specifically, the wall of the furnace 5 is a cylinder with spiral patterns, which increases the surface area of the wall of the furnace 5 so that the contact area between the flue gas and the wall of the furnace 5 is larger during secondary combustion, and the combustion is more complete.

[0025] Specifically, the inner diameter of the connection portion between the lower end of the primary smoke exhaust pipe 7 and the furnace 5 is gradually reduced to reduce the internal pressure at the top of the furnace 5, so that the flame is more concentrated and the stove 1 above is heated more evenly.

[0026] Specifically, the insulation layer 2 includes a furnace shell 201 and a mud and sand layer 202 attached to the inner wall of the furnace shell 201. This design can increase the heat collection effect and reduce heat loss.

[0027] Specifically, a vent hole 301 is opened on the side wall of the furnace bottom 3, and the vent hole 301 is located between the grate 4 and the ash recovery box 6 to better provide combustion support conditions for the furnace area.

[0028] Specifically, the outer diameter of the secondary combustion chamber between the furnace core 5 and the sediment layer 202 gradually decreases from the bottom end to the top end, thereby increasing the heat collection effect of the secondary combustion chamber.

[0029] Specifically, an activated carbon filter 11 is provided inside the secondary smoke exhaust pipe 10 , and the activated carbon filter 11 adopts a plate-type, spherical or conical structure.

[0030] In this embodiment, the stove 1, the furnace shell 201, and the furnace bottom 3 are made of high-temperature resistant iron plate. The outer side of the high-temperature resistant iron plate of the furnace shell 201 is sprayed with black-gray fluorocarbon paint, and the primary exhaust pipe 7 is made of aluminum alloy.

[0031] In this embodiment, the fuel is fed into the charging port 101 and is typically coal, cow dung, straw, etc. Since the fuel is at a high altitude, a mixed fuel of biomass (cow dung, etc.) and coal is recommended, as this can improve combustion efficiency and produce a calorific value higher than the sum of the calorific value of the coal and the calorific value of the cow dung.

[0032] In this embodiment, the fuel fed from the feed port 101 is burned once in the furnace 5, and the exhaust gas from the primary combustion is circulated to the secondary combustion chamber through the primary exhaust pipe 7 and the smoke collection circulation pipe 9. The secondary combustion is carried out by relying on the heat of the furnace wall 5, and then the exhaust gas from the secondary combustion is discharged. This avoids the problem that the fuel cannot be completely burned by primary combustion alone in high-altitude plateau areas. At the same time, the exhaust gas from the primary combustion is reused for a second time, thereby improving the utilization rate of combustion heat, and improving the heat collection effect and emission reduction benefits. The primary exhaust pipe 7 adopts a snail shell-shaped variable cross-section spiral pipe. The variable cross-section design adds a certain degree of obstruction to the discharge of the exhaust gas, which slows down the flow speed of the exhaust gas with a certain amount of heat, and transfers heat to the outside to achieve a heating effect. The spiral pipes are tightly connected layer by layer to form a conical cover structure, and the inner side of the conical cover forms a secondary heating and baking area for food. Therefore, the combustion equipment of the present invention is suitable for cooking and heating by residents in high-altitude areas.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the technical solution and conceptual design of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A combustion device for heating, cooking and exhaust gas treatment in high altitude areas, comprising a stove (1) and a stove bottom (3), wherein a heat preservation layer (2) is provided between the stove (1) and the stove bottom (3), a furnace (5) is provided inside the heat preservation layer (2), a grate (4) is provided at the bottom of the furnace (5), an ash recovery box (6) is provided at the furnace bottom (3), a feeding port (101) is provided in the middle of the stove (1) and communicates with the internal furnace area of the furnace (5), and the characteristics are: A secondary combustion chamber is left between the furnace (5) and the insulation layer (2); a primary smoke exhaust pipe (7) is arranged directly above the stove (1); the primary smoke exhaust pipe (7) is a snail-shell-shaped variable-section spiral pipe, and the spiral pipes are tightly connected layer by layer to form a conical cover structure; the lower end of the primary smoke exhaust pipe (7) is connected to the furnace (5) and communicates with the furnace area, and the upper end is connected to the smoke collection circulation pipe (9), and the smoke collection circulation pipe (9) is communicated with the lower part of the secondary combustion chamber; a secondary smoke exhaust pipe (10) is arranged on the upper part of the insulation layer (2) and communicates with the secondary combustion chamber.

2. The combustion equipment integrating heating, cooking and exhaust gas treatment in high altitude areas according to claim 1, characterized in that: A smoke exhaust fan (8) is provided in the inner cavity at the top end of the primary smoke exhaust pipe (7).

3. The combustion equipment integrating heating, cooking and exhaust gas treatment in high altitude areas as claimed in claim 2, characterized in that: A plurality of ventilation holes (501) are provided on the wall of the furnace (5).

4. The combustion equipment integrating heating, cooking and exhaust gas treatment in high altitude areas as claimed in claim 3, characterized in that: The wall of the furnace (5) is a cylinder with spiral patterns.

5. The combustion equipment integrating heating, cooking and exhaust gas treatment in high altitude areas according to claim 1, characterized in that: The inner diameter of the connection portion between the lower end of the primary smoke exhaust pipe (7) and the furnace (5) gradually decreases.

6. The combustion equipment integrating heating, cooking and exhaust gas treatment in high altitude areas according to claim 1, characterized in that: The thermal insulation layer (2) comprises a furnace shell (201) and a mud and sand layer (202) attached to the inner wall of the furnace shell (201).

7. The combustion equipment integrating heating, cooking and exhaust gas treatment in high altitude areas according to claim 1, characterized in that: A vent hole (301) is provided on the side wall of the furnace bottom (3), and the vent hole (301) is located between the furnace grate (4) and the ash recovery box (6).

8. The combustion equipment integrating heating, cooking and exhaust gas treatment in high altitude areas as claimed in claim 6, characterized in that: The outer diameter of the secondary combustion chamber between the furnace (5) and the sediment layer (202) gradually decreases from the bottom end to the top end.

9. The combustion equipment integrating heating, cooking and exhaust gas treatment in high altitude areas according to claim 1, characterized in that: An activated carbon filter (11) is provided inside the secondary smoke exhaust pipe (10), and the activated carbon filter (11) adopts a plate-type, spherical or conical structure.

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