CN110701611B

CN110701611B - Combustion apparatus

Info

Publication number: CN110701611B
Application number: CN201810750694.9A
Authority: CN
Inventors: 黄重景; 黄锦颖; 黄信铭; 黄信雄; 叶严仁; 林冠州
Original assignee: Grand Mate Co Ltd
Current assignee: Grand Mate Co Ltd
Priority date: 2018-07-10
Filing date: 2018-07-10
Publication date: 2021-06-22
Anticipated expiration: 2038-07-10
Also published as: CN110701611A

Abstract

A combustion device comprises a first cover body, a second cover body, an infrared ray generating net and a gas combustion element, wherein the first cover body is provided with a plurality of through holes; the first half part of the second cover body is provided with at least one hollow area, and the second half part is in a closed shape; the infrared generating net is arranged between the two cover bodies. A fire outlet of the gas combustion element is positioned in the projection range of the second half part. Therefore, the emitted infrared rays are uniform, and the intensity of the infrared rays is effectively improved.

Description

Combustion apparatus

Technical Field

The present invention relates to a gas combustion device, and more particularly, to a gas combustion device capable of generating open flame and infrared rays.

Background

The gas combustion device is used for combusting gas to generate flame, and heating an object to be heated by the heat energy of the flame, although the object to be heated can be heated by the flame at high temperature, most of the heat energy is transmitted to the inside of the object to be heated from the surface of the object to be heated in a conduction mode, so that the problem of uneven heating on the surface and the inside of the object to be heated can be caused.

For this reason, as shown in taiwan patent publication No. M543657, an infrared heat source device for generating infrared rays to heat an object to be heated has been developed by those skilled in the art, and the object to be heated can be uniformly heated by using the penetration property of the infrared rays. In the patent, a mesh-like structure 1 and a guide plate 2 are used to form a space for gas to flow back, so that the gas guides the gas to flow back through a guide surface 21 of the guide plate 2, enters the open pores of the mesh-like structure 1 from the tangential direction of a first surface 11 of the mesh-like structure 1, and passes out from a second surface 12, so that the mesh-like structure 1 generates infrared rays.

However, the whole flow guiding plate 2 in this patent is closed, so that the gas can not flow back to the first surface 11 of the mesh structure 1 along the guiding surface 21 of the flow guiding plate 2 as described in this patent, and the reason is that after the gas is output from the gas spraying device 3, the gas will form a back pressure between the mesh structure 1 and the flow guiding plate 2, and the back pressure will affect the flow of the gas, so that the gas cannot flow back to the first surface 11 of the mesh structure 1 along the guiding surface 21, and most of the flame will concentrate in the area of the mesh structure 1 closer to the gas spraying device 3, and cannot extend to a higher part, which causes uneven heating of the mesh structure 1, and further affects the uniformity of the generated infrared rays.

Therefore, the design of the infrared heat source device in the prior art is still not perfect, and there is a need for improvement.

Disclosure of Invention

In view of the above, the present invention is directed to a combustion apparatus, which can uniformly disperse the generated infrared rays.

Another object of the present invention is to provide a combustion apparatus capable of increasing the intensity of the generated infrared rays.

In order to achieve the above object, the present invention provides a combustion apparatus, which includes a first cover, a second cover, an infrared generating net and a gas combustion element, wherein the first cover has a first outer surface and a first inner surface opposite to each other, and the first cover is provided with a plurality of through holes penetrating through the first outer surface and the first inner surface; the second cover body is provided with a second outer surface and a second inner surface which are opposite to each other, the second cover body is arranged on the first cover body, and a containing chamber is formed between the second inner surface and the first inner surface; the second cover body is divided into a first half part and a second half part, the first half part is provided with at least one hollow area which penetrates through the second outer surface and the second inner surface, and the second half part is closed; the infrared generating net is arranged between the first cover body and the second cover body and is positioned in the containing chamber, the infrared generating net is heated by flame to generate infrared rays, and the generated infrared rays are transmitted out through the through holes; the gas burning element is provided with a fire outlet for burning gas to generate flame to act on the infrared ray generating net, and the fire outlet is positioned in the projection range of the second half part.

The first half part of the second cover body is provided with the hollow area, so that the problem that the emitted infrared rays are not uniform due to uneven combustion caused by back pressure of the combustion device in the prior art is effectively solved. And then the infrared ray generation net in the chamber is matched, so that the intensity of the infrared ray can be effectively improved.

Drawings

Fig. 1 is a perspective view of a combustion apparatus according to a preferred embodiment of the present invention.

Fig. 2 is an exploded perspective view of the combustion apparatus according to the preferred embodiment.

FIG. 3 is another perspective view of the combustion apparatus according to the preferred embodiment.

FIG. 4 is another perspective view of the combustion apparatus according to the preferred embodiment.

Fig. 5 is a top view of the second cover of the combustion apparatus according to the above preferred embodiment.

Fig. 6 is a partial sectional view of the combustion apparatus of the above preferred embodiment taken along a third reference plane.

FIG. 7 is a schematic view showing the flowing direction of the gas flow and the emission direction of the infrared rays.

[ notation ] to show

10 first cover

12 first body portion 122 first outer surface 124 first inner surface

12a the perforations 14 are open at the primary peripheral portion 18

20 second cover body

202 first half 202a first sub 202b second sub

204 second half 22 and second body portion 222 second exterior surface

224 second inner surface 22a and a second peripheral portion of the hollow-out area 24

242 inner edge 244 inner edge

30 infrared ray generating net

32 third peripheral edge part

40 gas combustion element

42 burner 422 fire outlet

50 support

52 first support plate 54 second support plate 56 third support plate

S-shaped container

P1 first reference plane P2 second reference plane

P3 third reference plane P4 fourth reference plane

L1 first distance L2 second distance

Detailed Description

In order that the invention may be more clearly described, preferred embodiments will now be described in detail with reference to the accompanying drawings. Referring to fig. 1 to 7, a combustion apparatus according to a preferred embodiment of the present invention includes a first housing 10, a second housing 20, an infrared generating net 30 and a gas combustion element 40, wherein:

the first cover 10 is made of metal and includes a first main body 12 and a first peripheral portion 14, wherein the first main body 12 has a first outer surface 122 and a first inner surface 124 opposite to each other, and is recessed from the first inner surface 124 toward the first outer surface 122 to form a concave arc shape, and the first main body 12 is provided with a plurality of through holes 12a penetrating through the first outer surface 122 and the first inner surface 124; the first peripheral portion 14 is annular and extends outward from the periphery of the first main body portion 12. The first housing 10 is disposed obliquely, and the first main body 12 further has an opening 18 located at a lower position and penetrating through the first outer surface 122 and the first inner surface 124. In fact, the first main body 12 is not limited to a concave arc shape, and may be a rectangle with a through hole or other shapes.

The second cover 20 is made of metal and includes a second main body 22 and a second peripheral portion 24, wherein the second main body 22 has a second outer surface 222 and a second inner surface opposite to each other, and is recessed from the second inner surface 224 toward the second outer surface 222 to form a concave arc shape, and the second inner surface 224 faces the first inner surface 124 of the first cover 10. The second peripheral portion 24 is annular and extends outward from the periphery of the second main body portion 22. The second housing 20 is disposed on the first housing 10, and a chamber S is formed between the second inner surface 224 and the first inner surface 124, and more specifically, the first housing 10 and the second housing 20 are fixed by the second peripheral portion 24 and the first peripheral portion 14 being combined together. The second housing 20 has a first half 202 and a second half 204, the second main portion 22 of the first half 202 has at least one hollow 22a penetrating through the second outer surface 222 and the second inner surface 224, the second half 204 is closed, and the second housing 20 is inclined downward from the first half 202 to the second half 204. In this embodiment, the at least one hollow-out region 22a is plural in number, and the hollow-out regions 22a are in the form of holes.

Referring to fig. 5 and 6, in the present embodiment, the second peripheral portion 24 is located on a first reference plane P1, and a second reference plane P2 is defined on the first reference plane P1, the second reference plane P2 passes through the center of the first reference plane P1 and is perpendicular to the first reference plane P1; second shell 20 is divided into a first half 202 and a second half 204 by a second reference plane P2. A third reference plane P3 is defined on the first reference plane P1, and the third reference plane P3 passes through the center of the first reference plane P1 and is perpendicular to the first reference plane P1 and the second reference plane P2, i.e., the intersection of the first reference plane P1, the second reference plane P2 and the third reference plane P3 is the center of the second cover 20. The second peripheral portion 24 of the second shell 20 has two opposite

inner edges

242, 244 on the third reference plane P3, and a first distance L1 is formed between the two

inner edges

242, 244. A fourth reference plane P4 is defined on the first reference plane P1, the fourth reference plane P4 is parallel to the second reference plane P2 and perpendicular to the third reference plane P3 and passes through the first half 202, a second distance L2 is provided between the fourth reference plane P4 and the second reference plane P2, the second distance L2 is a quarter of the first distance L1, in other words, the fourth reference plane P4 is located at a half of the distance between the inner edge 242 and the second reference plane P2. The first half 202 of the second cover 20 is divided into a first sub-portion 202a and a second sub-portion 202b by taking the fourth reference plane P4 as a boundary, and preferably, the hollow areas 22a are located in the first sub-portion 202a, and the second sub-portion 202b is closed. The number of the hollow areas 22a gradually increases in a direction away from the second half portion 204 and the fourth reference plane P4, that is, the number of the hollow areas 22a closer to the second peripheral portion 24 is larger.

The infrared ray generating net 30 is disposed between the first cover 10 and the second cover 20 and located in the accommodating chamber, the infrared ray generating net 30 is heated by the flame to generate infrared rays, and the generated infrared rays are transmitted through the through holes 12a of the first cover 10. In this embodiment, the infrared ray generation net 30 has a third peripheral portion 32, the third peripheral portion 32 is sandwiched between the first peripheral portion 14 and the second peripheral portion 24, so that the infrared ray generation net 30 is fixed between the first cover 10 and the second cover 20, and the infrared ray generation net 30 is located on the first reference plane P1. The mesh density per unit area of the infrared ray generating net 30 is greater than the density of the perforations 12a per unit area of the first cover 10. The infrared ray generation net 30 may be made of metal, alloy, ceramic, or the like.

The gas burning component 40 includes at least one burner 42 having at least one fire outlet 422 for burning gas to generate flame to act on the infrared ray generating net 30, and the fire outlet 422 is located within the projection range of the first half 202 of the second cover 20. In this embodiment, the number of the at least one burner 42 is plural, and the fire outlet 422 of each burner 42 is located below the opening 18 of the first cover 10, and the flame generated by the burner 42 acts on the infrared ray generation net 30 through the opening 18. In fact, the position of the burner 42 of the gas combustion element 40 is not limited to be located below the first housing 10, and the burner 42 may be designed to extend into the chamber S, and it is important that the flame is burned on the infrared ray generating net 30.

The combustion apparatus of the present embodiment further includes a bracket 50 for fixing the relative positions of the first casing 10, the second casing 20 and the gas combustion element 40, wherein the bracket 50 includes a first support plate 52, a second support plate 54 and a third support plate 56, the third support plate 56 is located between the first support plate 52 and the second support plate 54, the second casing 20 is fixed to the first support plate 52, and the fixed position is located at the intersection of the second reference plane P2 and the third reference plane P3, i.e. the central portion of the second casing 20. The gas combustion element 40 is fixed to the second support plate 54, and at least one of the first peripheral portion 14 and the second peripheral portion 24 is fixed to the third support plate 56.

Referring to fig. 7, when flame generated by the gas (shown by a dotted arrow in fig. 7) output from the fire outlet 422 of the gas burner 40 acts on the infrared ray generating net 30, the infrared ray generating net 30 is heated to emit infrared ray (shown by a solid arrow in fig. 7), a portion of the infrared ray directly penetrates through the through hole 12a of the first cover 10, another portion of the infrared ray penetrates through the through hole in the second inner surface 224 of the second cover 20, and the second inner surface 224 reflects the infrared ray in the direction of the first cover 10, and penetrates through the through hole 12a of the first cover 10, so as to increase the intensity of the infrared ray emitted by the combustion apparatus. The first cover 10 will be burnt by flame and will also generate infrared ray, and the flame will also penetrate through the through hole to form open fire.

It should be noted that, because the second half portion 204 of the second cover 20 is closed, and the fire outlet 422 of the gas combustion element 40 is located within the projection range of the second half portion 204, therefore, the flame formed by the gas output from the fire outlet 422 will flow along the second inner surface 224 of the second half portion 204 toward the first half portion 202, and the hollow 22a is opened on the first half portion 202, so that part of the gas and flame can smoothly escape out of the chamber S through the hollow area 22a along the second inner surface 224 of the first half 202 to form an open flame, therefore, the gas will not form a back pressure in the chamber S below the first half 202, so that the gas can flow more easily in the chamber, in this way, the flame can uniformly act on the infrared generating net 30 and the first cover 10, so that the intensity of the infrared generated by the combustion device is increased and uniform.

According to the combustion device of the present invention, the hollow-out area 22a is formed in the first half 202 of the second cover 20, so that the problem of uneven combustion caused by back pressure and uneven emitted infrared rays in the combustion device of the prior art is effectively solved. The invention can effectively improve the intensity of infrared ray by matching with the infrared ray generating net 30 in the chamber.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A combustion apparatus comprises

The first cover body is provided with a first outer surface and a first inner surface which are opposite, and the first cover body is provided with a plurality of through holes which penetrate through the first outer surface and the first inner surface; wherein the first cover has a first peripheral portion;

a second cover having a second outer surface and a second inner surface opposite to each other, the second cover having a second peripheral portion, the first peripheral portion being combined with the second peripheral portion, and a chamber being formed between the second inner surface and the first inner surface; the second cover body is divided into a first half part and a second half part, the first half part is provided with at least one hollow area which penetrates through the second outer surface and the second inner surface, and the second half part is closed;

the infrared generating net is arranged between the first cover body and the second cover body and is positioned in the containing chamber, the infrared generating net is heated by flame to generate infrared rays, and the generated infrared rays are transmitted out through the through holes; and

a gas burning component, which is provided with a fire outlet used for burning gas to generate flame to act on the infrared ray generating net, and the fire outlet is positioned in the projection range of the second half part.

2. The combustion apparatus as claimed in claim 1, wherein the infrared ray generating net has a third peripheral portion, the first peripheral portion is combined with the second peripheral portion, and the third peripheral portion is sandwiched between the first peripheral portion and the second peripheral portion.

3. The combustion apparatus as claimed in claim 2, comprising a support frame including a first support plate, a second support plate and a third support plate, the third support plate being located between the first support plate and the second support plate, the second housing being fixed to the first support plate, the gas combustion element being fixed to the second support plate, and at least one of the first peripheral portion and the second peripheral portion being fixed to the third support plate.

4. The combustion apparatus as claimed in claim 1, wherein the second peripheral portion is located on a first reference surface, and a second reference surface is defined on the first reference surface, the second reference surface passing through a center of the first reference surface and being perpendicular to the first reference surface; the second cover body is divided into the first half part and the second half part by taking the second reference surface as a boundary area; a third reference surface is defined on the first reference surface, and the third reference surface passes through the center of the first reference surface and is vertical to the first reference surface and the second reference surface; the second peripheral part of the second cover body is provided with two opposite inner edges on the third reference surface, and a first distance is reserved between the two inner edges; a fourth reference surface is defined on the first reference surface, the fourth reference surface is parallel to the second reference surface and perpendicular to the third reference surface, and passes through the first half part, a second distance is formed between the fourth reference surface and the second reference surface, and the second distance is one fourth of the first distance; the first half part of the second cover body is divided into a first secondary part and a second secondary part by taking the fourth reference surface as a boundary, the at least one hollow-out area is positioned in the first secondary part, and the second secondary part is closed.

5. The combustion apparatus as claimed in claim 4, comprising a support frame including a first support plate, a second support plate and a third support plate, the third support plate being located between the first support plate and the second support plate, the second housing being fixed to the first support plate at a location where the second reference surface and the third reference surface intersect; the gas combustion element is fixed on the second support plate, and at least one of the first peripheral part and the second peripheral part is fixed on the third support plate.

6. The combustion apparatus as claimed in claim 4, wherein the at least one hollow area is plural, the hollow areas are holes, and the number of the hollow areas increases along a direction away from the fourth reference plane.

7. The combustion apparatus of claim 1, wherein the at least one hollow area is plural, the hollow areas are holes, and the number of the hollow areas increases along a direction away from the second half portion.

8. The burner of claim 1, wherein the infrared producing mesh has a mesh density per unit area that is greater than a perforation density per unit area on the first housing.

9. The burner of claim 1, wherein the second inner surface of the second housing is configured to reflect infrared rays generated by the infrared ray generating mesh toward the first housing.