Combustor and gas hob

Abstract

The utility model relates to a kind of burners, including furnace head and stainless steel fire cover, the stainless steel fire cover cover is located on the furnace head, the furnace head has gas outlet, the stainless steel fire cover is annular with the fire hole that the gas outlet is communicated is equipped;The furnace head has first sealing part, the stainless steel fire cover has second sealing part, the stainless steel fire cover with the furnace head is fixed by crimping between, when the stainless steel fire cover with the furnace head crimping, the first sealing part with the second sealing part cooperation forms axial seal and radial seal.The burner and gas stove provided in the utility model have double sealing effect in axial and radial between furnace head and stainless steel fire cover, and the effect of preventing fire leakage is better.

Description

Technical Field

[0001] This utility model relates to the field of gas stove technology, specifically to a burner and a gas stove. Background Technology

[0002] A gas stove burner typically consists of a burner head and a burner cap. The burner head is primarily responsible for mixing and igniting the gas and air, while the burner cap, usually placed on the burner head, disperses the flame and protects the burner. In existing technology, burner caps are generally made of cast iron or stainless steel. Stainless steel burner caps are typically riveted to the burner head, for example, using an interference fit. This can easily lead to axial or radial gaps at the contact surface between the burner cap and the burner head, resulting in flame leakage during use.

[0003] Therefore, it is necessary to improve upon existing technologies to provide a burner and gas stove with better flame leakage prevention. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, this utility model provides a burner and gas stove with better flame leakage prevention effect.

[0005] To solve the above-mentioned technical problems, the technical solution used in this utility model is as follows:

[0006] A burner includes a burner head and a stainless steel burner cap, the stainless steel burner cap being disposed on the burner head, the burner head having a gas outlet, and the stainless steel burner cap having a ring of flame outlet holes communicating with the gas outlet; the burner head having a first sealing part, the stainless steel burner cap having a second sealing part, the stainless steel burner cap being fixed to the burner head by pressing, and when the stainless steel burner cap is pressed to the burner head, the first sealing part and the second sealing part cooperate to form an axial seal and a radial seal.

[0007] Preferably, a sealing flange is formed on the outer side wall of the burner head, and the sealing flange is the first sealing part; the sealing flange includes a radial sealing end extending outward from the outer side wall of the burner head in a horizontal radial direction, and an axial sealing end extending upward from the end of the radial sealing end in the axial direction of the burner head; the second sealing part is a sealing groove, and the sealing groove is adapted to the shape of the sealing flange. When the stainless steel burner cap is pressed and fixed between the burner head and the sealing flange, the sealing flange and the sealing groove are interference-fitted to form an axial seal and a radial seal.

[0008] Preferably, the axial sealing end of the sealing flange is beveled.

[0009] Preferably, an included angle α is formed between the axial sealing end and the radial sealing end, where 45°≤α≤55°.

[0010] Preferably, a groove is provided on the outer side wall of the burner head, the groove extends along the axial direction of the burner head, and the groove is the first sealing part; when the stainless steel burner cap is pressed and fixed to the burner head, a filling protrusion is formed on the stainless steel burner cap, the filling protrusion is the second sealing part, and the filling protrusion is interference-fitted with the groove to form a radial seal and an axial seal.

[0011] Preferably, there are at least two grooves, which are arranged in a ring around the burner head, and adjacent grooves are spaced apart along the height direction of the burner head.

[0012] Preferably, the burner head includes a burner head body and a sealing edge arranged around it, the sealing edge being the first sealing part, a sealing edge groove being formed between the burner head body and the sealing edge, the sealing edge groove extending along the axial direction of the burner head body, the second sealing part of the stainless steel burner cap being able to be inserted into the sealing edge groove and interference fit with the inner wall of the sealing edge to form an axial seal; when the burner cap is pressed and fixed to the burner head, under pressure, the sealing edge can deform toward the sealing edge groove to form a radial seal.

[0013] Preferably, the depth of the pressure groove is 0.8-1.5 cm.

[0014] A gas stove includes a burner as described in any of the preferred embodiments.

[0015] The beneficial effects of this utility model are mainly reflected in the fact that the burner and gas stove provided by this utility model have a double sealing effect in the axial and radial directions between the burner head and the stainless steel burner cap, which has a better flame leakage prevention effect. Attached Figure Description

[0016] The above and other objects, features, and advantages of this invention will become clearer through a more detailed description of the preferred embodiments shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of this invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of the burner in this utility model;

[0018] Figure 2 This is a cross-sectional view of the first embodiment of the burner in this utility model.

[0019] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle;

[0020] Figure 4 for Figure 3 A schematic diagram of the exploded structure;

[0021] Figure 5 This is a schematic diagram of the structure of the second embodiment of the present invention;

[0022] Figure 6 This is a structural schematic diagram of the third embodiment of the present invention.

[0023] In the figure: 1. Burner head, 10. Sealing flange, 11. Radial sealing end, 110. Axial sealing end, 111. Groove, 12. Upper bottom wall, 120. Lower bottom wall, 121. Side wall, 122. Sealing edge, 13. Edge groove, 130. Stainless steel burner cap, 2. Sealing groove, 20. Flame outlet hole, 21. Radial seal, 22. Axial seal, 23. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0025] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "mounted," "one end," "the other end," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] refer to Figure 1-6 This utility model provides a burner, including a burner head 1 and a stainless steel burner cap 2 (generally a thin steel burner cap). The stainless steel burner cap 2 is placed on the burner head 1. The burner head 1 is the core component of the burner and has a gas passage inside. The gas passage is connected to an external gas source. The burner head 1 has a gas outlet (not shown in the figure) to transport gas through the gas passage to the gas outlet. The stainless steel burner cap 2 has a flame outlet hole 21 that communicates with the gas outlet. Generally, the burner head 1 is also provided with an ignition needle. The ignition needle ignites the gas, so that the flame is released through the flame outlet hole 21. The burner head 1 has a first sealing part and the stainless steel burner cap 2 has a second sealing part. The stainless steel burner cap 2 and the burner head 1 are fixed by pressing (generally riveting). When the stainless steel burner cap 2 and the burner head 1 are pressed together, under the action of pressure, the first sealing part and the second sealing part cooperate to form an axial seal 23 and a radial seal 22 between the stainless steel burner cap 2 and the burner head 1.

[0028] In this embodiment, the dual sealing effect of axial and radial sealing effectively avoids the flame leakage problem caused by gaps forming between the burner cap and burner head 1 after thermal shock. Thermal shock refers to a rapid temperature change within a short period. Specifically, in non-use mode, the overall temperature of the burner decreases, but upon ignition, the flame temperature can cause the burner head 1 and stainless steel tube to heat up rapidly. During the heating and cooling process, gaps may form between the stainless steel burner cap 2 and burner head 1 due to expansion or contraction, causing flames to leak from the edges or the joint between them—this is what we call flame leakage. Therefore, in this invention, the bidirectional sealing (refer to the directional indicators in the attached drawings, i.e., axial and radial sealing) effectively solves the flame leakage problem in existing technologies.

[0029] Regarding the axial and radial sealing effects formed between the stainless steel burner cap 2 and the furnace head 1, this utility model provides the following embodiments:

[0030] Example 1:

[0031] refer to Figure 2-4 In Embodiment 1, a sealing flange 11 is provided around the outer wall 122 of the burner head 1. The sealing flange 11 is the first sealing part. The sealing flange 11 includes a radial sealing end 110 extending outward from the outer wall 122 of the burner head 1 in the horizontal radial direction, and an axial sealing end 111 extending upward from the end of the radial sealing end 110 (i.e. the end of the radial sealing end 110) in the axial direction of the burner head 1. The radial sealing end 110 is mainly used to achieve the effect of radial sealing, and the axial sealing end 111 is mainly used to achieve the effect of axial sealing. The second sealing part is a sealing groove 20. The sealing groove 20 is adapted to the shape of the sealing flange 11. When the stainless steel burner cap 2 is pressed and fixed between the burner head 1, under pressure, the sealing flange 11 and the sealing groove 20 are interference-fitted to form axial sealing and radial sealing. In this embodiment, the sealing groove 20 can be formed under pressure during the pressing process. For example, the stainless steel burner cap 2 material itself can be plastically deformed by riveting and connected with the axial sealing end 111 of the sealing flange 11 to form an axial seal 23. Then, by spinning, the thin wall of the stainless steel burner cap 2 is concave and connected with the radial sealing end 110 to form a radial seal 22, thereby forming a sealing groove 20 that matches the sealing flange 11. Finally, the dual sealing effect of the axial seal 23 and the radial seal 22 is achieved, avoiding the phenomenon of flame leakage after the burner cap and the burner head 1 become loose.

[0032] refer to Figure 3-4 In a preferred embodiment, the axial sealing end 111 of the sealing flange 11 is arranged on an inclined plane (or tilted). An inclined plane means that... Figure 3From a first-person perspective, the axial sealing end 111 is inclined in cross-section. Specifically, only with an inclined design can the resistance be reduced during riveting, allowing the stainless steel burner cap 2 to be better pressed and fixed to the furnace head 1, thus avoiding jamming during the pressing process. Furthermore, during spinning, the inclined surface more easily guides the thin wall of the stainless steel burner cap 2 to be recessed, forming a tight radial seal with the radial sealing end 110. If a right-angled design were used, it would be very likely that the stainless steel burner cap 2 would not be able to be pressed down smoothly, and it might also cause the stainless steel burner cap 2 to be punctured and cracked during the pressing process.

[0033] refer to Figure 3-4 In a preferred embodiment, an included angle α is formed between the axial sealing end 111 and the radial sealing end 110, where 45° ≤ α ≤ 55°. Specifically, the included angle α can be 45°, 50°, or 55°, but is preferably 45°.

[0034] Example 2:

[0035] refer to Figure 5 In Embodiment 2, a groove 12 is provided on the outer wall 122 of the burner head 1. The groove 12 extends along the axial direction of the burner head 1 and serves as the first sealing part. When the stainless steel burner cap 2 is pressed and fixed to the burner head 1, a filling protrusion is formed on the stainless steel burner cap 2. The filling protrusion serves as the second sealing part. The filling protrusion and the groove 12 are press-fitted to form a radial seal and an axial seal. In this embodiment, the groove 12 provides forming space for the filling protrusion of the stainless steel burner cap 2. Specifically, during the riveting process, the stainless steel burner cap 2 is subjected to external force (referring to the pressure of the riveting equipment) and undergoes plastic deformation. The material is squeezed into the groove 12, thereby forming a filling protrusion (not shown) on the stainless steel burner cap 2 that matches the groove 12. The filling protrusion is tightly fitted with the upper and lower bottom walls 121 and side walls 122 of the groove 12 to form a seal in the radial direction and a seal in the axial direction. Through the press-fit between the filling protrusion and the groove 12, a tight pressing relationship is formed, effectively preventing flame leakage of the burner.

[0036] refer to Figure 5 In a further preferred embodiment, there are at least two grooves 12, which are arranged in a ring around the burner head 1, and adjacent grooves 12 are spaced apart along the height direction of the burner head 1. The design of multiple grooves 12 forms a seal at different heights of the burner head 1, effectively avoiding the flame leakage problem caused by the short sealing distance of conventional single-layer groove 12 design.

[0037] Example 3:

[0038] refer to Figure 6In Embodiment 3, the burner head 1 includes a burner head body 10 and a sealing edge 13 surrounding it. The sealing edge 13 is the first sealing part. A sealing groove 130 is formed between the burner head body 10 and the sealing edge 13. The sealing groove 130 extends along the axial direction of the burner head body 10. The second sealing part of the stainless steel burner cap 2 can be inserted into the sealing groove 130 and press-fitted with the inner wall of the sealing edge 13 to form an axial seal. When the stainless steel burner cap 2 is pressed and fixed to the burner head body 10, under pressure, the sealing edge 13 can deform in the direction of the sealing groove 130 to form a radial seal. The core of Embodiment 3 is that the sealing edge 13 and the sealing groove 130 structure on the burner head 1 achieve both axial and radial sealing effects after being pressed with the stainless steel burner cap 2. Specifically, the sealing edge 13 is arranged around the outer wall of the furnace body 10, and a sealing edge groove 130 is formed between the furnace body 10 and the sealing edge 13. The second sealing part at the lower end of the stainless steel flame cap 2 is inserted into the sealing edge groove 130. In this embodiment, the second sealing part can be directly the lower end of the stainless steel flame cap 2. During processing, the lower end (second sealing part) of the stainless steel flame cap 2 is directly inserted into the sealing edge groove 130 and press-fitted with the sealing edge 13 to form an axial seal. Then, the sealing edge 13 is subjected to force by the pressing device (riveting device). Under the action of external force, the sealing edge 13 deforms and tightens inward (the so-called inward refers to the direction of the sealing edge groove 130), thereby tightly wrapping the outer wall of the part of the stainless steel flame cap 2 inserted into the sealing edge groove 130, forming a radial seal. This ensures the stability between the furnace head 1 body and the stainless steel flame cap 2, and also ensures the axial and radial sealing, effectively achieving the effect of preventing fire leakage.

[0039] refer to Figure 6 In a further preferred embodiment, the depth of the pressing groove 130 is 0.8-1.5 cm. For example, the depth of the pressing groove 130 is 0.8 cm, 1 cm, 1.2 cm, or 1.5 cm. If the pressing groove 130 is too shallow, it may lead to a decrease in sealing performance, while if it is too deep, it may lead to excessive difficulty in crimping. Therefore, the depth of the pressing groove 130 is preferably 1 cm.

[0040] A gas stove (not shown) includes a burner as described in any of the preferred embodiments above; the burner head 1 is provided with mounting feet, and during installation, the mounting feet of the burner head 1 are installed and fixed to the gas stove body.

[0041] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A burner, characterized in that: The device includes a burner head and a stainless steel burner cap. The stainless steel burner cap is placed on the burner head, and the burner head has a gas outlet. The stainless steel burner cap has a ring of flame holes that communicate with the gas outlet. The burner head has a first sealing part, and the stainless steel burner cap has a second sealing part. The stainless steel burner cap and the burner head are fixed together by pressing. When the stainless steel burner cap is pressed together with the burner head, the first sealing part and the second sealing part cooperate to form an axial seal and a radial seal.

2. The burner as claimed in claim 1, characterized in that, A sealing flange is formed on the outer wall of the burner head, and the sealing flange is the first sealing part; the sealing flange includes a radial sealing end extending outward from the outer wall of the burner head in a horizontal radial direction, and an axial sealing end extending upward from the end of the radial sealing end in the axial direction of the burner head; the second sealing part is a sealing groove, and the sealing groove is adapted to the shape of the sealing flange. When the stainless steel burner cap is pressed and fixed between the burner head and the sealing flange, the sealing flange and the sealing groove are interference-fitted to form an axial seal and a radial seal.

3. The burner as described in claim 2, characterized in that, The axial sealing end of the sealing flange is beveled.

4. The burner as described in claim 2, characterized in that, An included angle α is formed between the axial sealing end and the radial sealing end, where 45°≤α≤55°.

5. The burner as claimed in claim 1, characterized in that, A groove is provided on the outer wall of the burner head, and the groove extends along the axial direction of the burner head. The groove is the first sealing part. When the stainless steel burner cap is pressed and fixed to the burner head, a filling protrusion is formed on the stainless steel burner cap. The filling protrusion is the second sealing part. The filling protrusion and the groove are interference-fitted to form a radial seal and an axial seal.

6. The burner as described in claim 5, characterized in that, There are at least two grooves, and the two grooves are arranged in a ring around the burner head, with adjacent grooves spaced apart along the height direction of the burner head.

7. The burner as claimed in claim 1, characterized in that, The burner head includes a burner head body and a sealing edge surrounding it. The sealing edge is the first sealing part. A sealing edge groove is formed between the burner head body and the sealing edge. The sealing edge groove extends along the axial direction of the burner head body. The second sealing part of the stainless steel burner cap can be inserted into the sealing edge groove and press-fitted with the inner wall of the sealing edge to form an axial seal. When the burner cap is pressed and fixed to the burner head, under pressure, the sealing edge can deform in the direction of the sealing edge groove to form a radial seal.

8. The burner as claimed in claim 7, characterized in that, The depth of the pressure groove is 0.8-1.5 cm.

9. A gas stove, characterized in that, Including the burner as described in any one of claims 1-8.

Images