Heat insulation structure of firewood stove combustion chamber

Abstract

The utility model provides a thermal insulation structure of a firewood stove combustion chamber, which comprises an outer shell, an inner shell and a combustion shell which are sequentially arranged from outside to inside, a first thermal insulation material is filled between the outer shell and the inner shell, an air cavity is formed between the inner shell and the combustion shell, and a second thermal insulation material is filled at the top of the air cavity. An air outlet structure communicated with the air cavity is formed in the shell wall of the combustion shell, the air cavity is communicated with the outside, and a combustion cavity is formed in the inner side of the combustion shell. The first heat insulation object between the outer shell and the inner shell is used for outer layer heat insulation, the air cavity between the inner shell and the combustion shell is used for inner layer heat insulation, and the heat transfer speed and temperature are reduced by means of the characteristic that air heat conduction is slow; in addition, hot air in the air cavity is taken away through the air outlet structure, and outward radiation of heat is further slowed down.

Description

[Technical field]

[0001] The utility model relates to a heat insulation structure of a combustion chamber of a wood stove. [Background technology]

[0002] Firewood stoves usually use firewood as fuel. Traditional firewood stoves are built with cement bricks and are fixed and cannot be moved. Therefore, some people combine firewood stoves with modern technology to make them mobile firewood stoves that can be produced and sold. At present, firewood stoves on the market also have gas stoves, functional cabinets, range hoods and other components. Therefore, the heat insulation of the firewood stove combustion chamber is particularly important. If the heat insulation is not done well, other components are likely to burn out due to high temperature, or reduce their service life to varying degrees. At present, the heat insulation of the combustion chamber is achieved by setting up external insulation, but it is difficult to solve the problem of heat radiation affecting other components by external insulation alone. [Contents of the utility model]

[0003] The purpose of the utility model is to overcome the above problems. We provide a heat insulation structure for a combustion chamber of a wood stove, which improves the heat insulation performance of the combustion chamber.

[0004] To achieve the above-mentioned purpose, the utility model provides a heat insulation structure of a wood-fired stove combustion chamber, which includes an outer shell, an inner shell and a combustion shell arranged in sequence from the outside to the inside, a first heat insulation material is filled between the outer shell and the inner shell, a wind cavity is formed between the inner shell and the combustion shell, and a second heat insulation material is filled on the top of the wind cavity, an air outlet structure connected to the wind cavity is opened on the shell wall of the combustion shell, the wind cavity is connected to the outside, and a combustion cavity is formed on the inner side of the combustion shell.

[0005] In one or more embodiments, the air outlet structure is composed of a plurality of air outlet holes, and the plurality of air outlet holes are evenly distributed in the middle and upper part of the combustion shell.

[0006] In one or more embodiments, the shape of the air outlet is one or more combinations of circular, elliptical, and elongated.

[0007] In one or more embodiments, the first thermal insulation material and the second thermal insulation material are both thermal insulation mud.

[0008] In one or more embodiments, the thermal insulation structure further includes a bottom plate, and the outer shell, the inner shell and the combustion shell are fixed to the bottom plate.

[0009] In one or more embodiments, a plurality of columns are connected to the bottom plate, the columns are hollow structures and are connected to the wind cavity, and air inlets are provided on the columns.

[0010] In one or more embodiments, a plurality of vertically arranged exhaust pipes are provided in the air cavity, the exhaust pipes are fixed by a second heat insulation material, and the top air inlet ends of the exhaust pipes extend out of the second heat insulation material.

[0011] Compared with the background technology, the utility model has the following effects: by using the first insulation between the outer shell and the inner shell as the outer layer insulation, and the wind cavity between the inner shell and the combustion shell as the inner layer insulation, the slow heat conduction characteristic of air is utilized to reduce the speed and temperature of heat transfer; in addition, the air outlet structure is utilized to take away the hot air in the wind cavity, further slowing down the heat radiation outward.

Brief Description of the Drawings

[0012] Figure 1 This is a schematic diagram of the combustion chamber of the embodiment of the utility model;

[0013] Figure 2 It is a cross-sectional view of a combustion chamber according to an embodiment of the present utility model. [Specific implementation method]

[0014] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0015] Please see Figure 1-2 The utility model provides a heat insulation structure of a firewood stove combustion chamber, which comprises an outer shell 1, an inner shell 2 and a combustion shell 3 which are arranged in sequence from the outside to the inside, a first heat insulation material 4 is filled between the outer shell and the inner shell, a wind cavity 5 is formed between the inner shell and the combustion shell, and a second heat insulation material 6 is filled on the top of the wind cavity, the wind cavity is filled with air, and the heat insulation property of the air is utilized to delay and weaken the heat radiation transfer of the combustion shell to the outside, an air outlet structure 7 connected with the air cavity is opened on the shell wall of the combustion shell 3, the air cavity 5 is connected with the outside, a combustion cavity is formed on the inner side of the combustion shell 3, when the combustion cavity is burning, fresh air from the outside enters the air cavity and is output from the air outlet structure to the combustion cavity, providing fresh air for combustion in the combustion cavity, and at the same time, the hot air in the air cavity is also output to the combustion cavity, taking away the heat of the air cavity in the process, further slowing down the heat radiation of the combustion cavity to the outside.

[0016] The air outlet structure 7 is composed of a plurality of air outlet holes, which are evenly distributed in the middle and upper part of the combustion shell 3. The shape of the air outlet hole is a combination of one or more of a circle, an ellipse, and a strip, which is selected according to actual production needs and is not limited here.

[0017] The first thermal insulation material 4 and the second thermal insulation material 6 are both thermal insulation mud, which is a common and easily available thermal insulation mud material on the market, and has the advantages of flame retardancy, heat insulation and thermal insulation.

[0018] The heat insulation structure further comprises a bottom plate 8, and the outer shell 1, the inner shell 2 and the combustion shell 3 are fixed to the bottom plate, so that the structure of the outer shell, the inner shell and the combustion shell is more stable.

[0019] A plurality of columns 9 are connected to the bottom plate 8. The columns are hollow structures and are connected to the air cavity 5. Air inlets are provided on the columns. The internal space of the columns is utilized to provide a path for the air to enter the air cavity. Preferably, the bottom of the column is the air inlet, but the bottom of the column needs to be suspended to facilitate the entry of fresh air.

[0020] A plurality of vertically arranged exhaust pipes 10 are arranged in the wind cavity 5. The exhaust pipes are fixed by a second thermal insulation material 6, and the top air inlet ends of the exhaust pipes extend out of the second thermal insulation material 6. The exhaust pipes can discharge the smoke generated by the combustion in the combustion chamber, and the exhaust pipes are arranged on the second thermal insulation material, which can save the additional process and materials for insulating the outside of the exhaust pipes.

[0021] In addition to the above embodiments, the present invention may also have other implementation modes, and technical solutions formed by equivalent replacement or equivalent transformation all fall within the protection scope of the present invention.

Claims

1. A heat insulation structure for a combustion chamber of a wood stove, characterized in that: The invention comprises an outer shell (1), an inner shell (2) and a combustion shell (3) which are arranged in sequence from the outside to the inside; a first heat insulating material (4) is filled between the outer shell and the inner shell; a wind cavity (5) is formed between the inner shell and the combustion shell; and a second heat insulating material (6) is filled at the top of the wind cavity; an air outlet structure (7) which is connected to the wind cavity is provided on the shell wall of the combustion shell (3); the wind cavity (5) is connected to the outside; and a combustion cavity is formed on the inner side of the combustion shell (3).

2. The heat insulation structure of a wood stove combustion chamber according to claim 1, characterized in that: The air outlet structure (7) is composed of a plurality of air outlet holes, and the plurality of air outlet holes are evenly distributed in the middle and upper part of the combustion shell (3).

3. The heat insulation structure of a wood stove combustion chamber according to claim 2, characterized in that: The shape of the air outlet is circular, oval, or strip, or a combination thereof.

4. The heat insulation structure of a wood stove combustion chamber according to claim 1, characterized in that: The first thermal insulation material (4) and the second thermal insulation material (6) are both thermal insulation mud.

5. The heat insulation structure of a wood stove combustion chamber according to claim 1, characterized in that: The heat insulation structure also includes a bottom plate (8), and the outer shell (1), the inner shell (2) and the combustion shell (3) are fixed to the bottom plate.

6. The heat insulation structure of a wood stove combustion chamber according to claim 5, characterized in that: A plurality of columns (9) are connected to the bottom plate (8), the columns are hollow structures and are connected to the air cavity (5), and air inlets are provided on the columns.

7. A heat insulation structure for a combustion chamber of a wood-burning stove according to any one of claims 1 to 6, characterized in that: A plurality of vertically arranged exhaust pipes (10) are arranged in the air cavity (5), the exhaust pipes are fixed by the second heat insulation (6), and the top air inlet ends of the exhaust pipes extend out of the second heat insulation (6).

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