Combustor and gas stove

Abstract

The utility model discloses a burner which comprises a shell, a burner body, a burner cover, a burner cover, a burner cover and a burner cover. The shell is provided with a bottom plate and an annular outer fire cavity channel. The injection pipeline comprises an upper half pipeline and a lower half pipeline, the lower half pipeline is integrally connected with the bottom plate of the shell, the edge of the upper half pipeline is provided with a plurality of connecting parts, and the connecting parts are attached to the bottom plate and fixedly connected with the bottom plate. The utility model further discloses a gas stove with the burner. The gas stove has the advantages that on the premise that the injection pipeline is arranged to be of a split structure, the sealing performance of the injection pipeline is guaranteed, and gas leakage is avoided.

Description

Technical Field

[0001] The invention relates to a burner and a gas stove, belonging to the technical field of kitchen appliances. Background Art

[0002] The burner and ejector tube are important components of the gas stove. Among them, the burner is the part of the stove that directly generates flames, which determines the distribution of the flame and the combustion efficiency. The most common burner suitable for kitchens is the double-ring fire style. The interior of the burner has a ring-shaped outer fire cavity. The function of the ejector tube is to transport gas. The gas is sprayed into the ejector tube at high speed, thereby injecting air into the ejector tube and mixing with the gas to form a mixed gas. After the mixed gas is injected into the outer fire cavity, it ignites and burns at the fire hole of the outer fire cover of the burner.

[0003] The burner and ejector pipe are manufactured using a mold. Typically, the ejector pipe and burner are an integrated structure. Due to the complexity of the ejector pipe's structure, the design and preparation of the mold are demanding. This problem can be solved by making the ejector pipe a split structure. One part of the ejector pipe is integrated with the ignition distributor, while the other part is fixedly connected to the ignition distributor, thus making the ejector pipe structurally complete and reducing the difficulty of manufacturing. However, the split structure of the ejector pipe obviously increases its sealing requirements to prevent gas leakage. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a burner and a gas stove, which can ensure the sealing of the injection pipe to avoid gas leakage under the premise that the injection pipe is set as a split structure.

[0005] The utility model is realized through the following technical solutions.

[0006] A burner comprising:

[0007] The shell has a bottom plate and an annular outer fire cavity inside;

[0008] The ejection pipe comprises an upper half pipe and a lower half pipe, wherein the lower half pipe is integrally connected to the bottom plate of the shell, and the edge of the upper half pipe has a plurality of connecting parts, which are attached to the bottom plate and fixedly connected to the bottom plate.

[0009] As a further improvement of the present invention, the bottom plate of the shell has a recessed groove portion corresponding to the connecting portion, the bottom surface of the connecting portion is attached to the bottom surface of the groove portion, and the side edge of the connecting portion is attached to the groove wall surface of the groove portion.

[0010] As a further improvement of the present invention, the sink portion is provided with at least one fastener, and the connecting portion is provided with at least one connecting hole for fixed connection with the fastener.

[0011] As a further improvement of the present invention, the fastener has a locking portion that passes through the connecting hole and is exposed on the top surface of the connecting portion, and the locking portion is used to clamp the connecting portion with the recessed portion after being deformed by pressure.

[0012] As a further improvement of the present invention, the fastener and the sink portion are integrally connected.

[0013] As a further improvement of the present invention, the upper half pipe is provided with at least one connecting portion at the edge of its head end, and the upper half pipe is provided with at least one connecting portion at the edges of both sides thereof.

[0014] As a further improvement of the present invention, the ejection pipe has an ejection section and a changing section arranged along the direction of the gas path, the ejection section is used to inject air from the air inlet and mix it with the gas; the changing section is used to change the direction of the gas path and make the injection direction of the air outlet tangent to the external fire cavity.

[0015] As a further improvement of the present invention, the ejection pipe further has an extension section, and the extension section is located downstream of the turning section along the direction of the gas path.

[0016] A gas stove comprises the burner.

[0017] Beneficial effects of the utility model:

[0018] 1. By attaching the connection part to the base plate, the contact area between the upper half of the pipe and the base plate at its connection can be increased, which can improve the sealing of these connections, thereby preventing gas leakage from the injection pipe during the gas input process, and thus improving the combustion stability of the burner;

[0019] 2. The provision of the sinking groove portion, on the one hand, can keep the bottom plate flat, thereby reducing the resistance encountered by the mixed gas flowing in the external fire cavity, thereby improving flow efficiency to ensure combustion performance, and also reducing noise. On the other hand, the bottom surface and side edges of the connecting portion are respectively attached to the bottom surface and wall surface of the sinking groove portion, which not only further increases the attachment area but also bends the gas leakage path, thereby further improving the sealing effect and preventing gas leakage.

[0020] 3. By locking the locking part on the top surface of the connecting part, on the one hand, the fixed connection method is relatively easy to operate, and the firmness of the fixed connection can be guaranteed; on the other hand, the locking part can be pressed tightly against the top surface of the connecting part, so that the fitting state of the connecting part and the sink part is tighter, thereby further improving its sealing and avoiding gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following is a detailed description of preferred embodiments of the present invention with reference to the accompanying drawings to help understand the purpose and advantages of the present invention, wherein:

[0022] Figure 1 is a schematic diagram of the burner;

[0023] Figure 2 Schematic diagram of the burner after removing the outer fire cover;

[0024] Figure 3 This is a schematic diagram of the lower half of the pipe and the bottom plate;

[0025] Figure 4 This is a schematic diagram of the upper half of the pipeline;

[0026] Figure 5 This is a structural diagram of the ejector pipe. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below based on the accompanying drawings and implementation examples.

[0028] In this specification, directional terms such as up, down, left, right, front, back, front, back, top, and bottom, which are mentioned or may be mentioned, are defined relative to the configurations shown in the accompanying drawings. The terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may vary depending on the location and usage of the component. Therefore, these or other directional terms should not be construed as restrictive.

[0029] Implementation Case 1:

[0030] Reference Figure 1-5A burner includes a shell 1 and an ejection pipe 2, the shell 1 includes an ignition divider 11, an outer fire cover 12 and an inner fire cover 13, wherein the ignition divider 11 has a base plate 1a and an inner ring, a middle ring 1b and an outer ring 1c connected to the base plate 1a, the outer fire cover 12 is sealed on the middle ring 1b and the outer ring 1c, so that an outer fire cavity c defined by the base plate 1a, the middle ring 1b, the outer ring 1c and the fire cover is formed inside the shell 1, the ejection pipe 2 injects a mixture of gas and air into the outer fire cavity c, and an outer fire ring is formed on the fire hole 121 of the outer fire cover 12 through ignition by the igniter. In similar principle, an inner fire ring is formed on the fire hole 121 of the inner fire cover 13. Since the technical improvement of the present application does not involve this part, this part will not be described in detail in this embodiment.

[0031] In this embodiment, the ejection conduit 2 comprises an upper half 2a and a lower half 2b. The upper half 2a corresponds to the upper half of the ejection conduit 2, while the lower half 2b corresponds to the lower half of the ejection conduit 2. The lower half 2b of the ejection conduit 2 is integrally connected to the bottom plate 1a of the housing 1, specifically the bottom plate 1a of the ignition distributor 11. The edges of the upper half 2a have multiple connecting portions 2c that fit onto and are fixedly connected to the bottom plate 1a, thereby completing the assembly of the upper half 2a and the lower half 2b, making the structure complete.

[0032] In this embodiment, by attaching the connecting portion 2c to the base plate 1a, the contact area between the upper half pipe 2a and the base plate 1a at its connection can be increased, and the sealing of these connections can be improved, thereby avoiding gas leakage in the injection pipe 2 during the process of inputting gas, and then improving the combustion stability of the burner.

[0033] In this embodiment, the bottom plate 1a of the shell 1 has an inwardly recessed recess 1e at a location corresponding to the connection portion 2c. The shape of the recess 1e matches that of the connection portion 2c. Furthermore, the bottom surface of the connection portion 2c of the lower half pipe 2b abuts against the bottom surface of the recess 1e, and the side edges of the connection portion 2c abut against the wall surfaces of the recess 1e. Providing the recess 1e on the bottom plate 1a for affixing the connection portion 2c allows, on the one hand, the bottom plate 1a to remain flat, thereby reducing the resistance encountered by the mixed gas flowing within the outer fire cavity c, thereby improving flow efficiency to ensure combustion performance and reducing noise. On the other hand, the bottom and side edges of the connection portion 2c, respectively, affix to the bottom and wall surfaces of the recess 1e, further increasing the affixed area and bending the gas leakage path, thereby further improving the sealing effect and preventing gas leakage.

[0034] In this embodiment, regarding the connection method of the connecting part 2c of the lower half pipe 2b, the groove part 1e is provided with a fastener h2. Normally, the groove part 1e only needs to be provided with one fastener h2, or multiple fasteners can be provided. The connecting part 2c is provided with at least one connecting hole h1 for fixed connection with the fastener h2, thereby completing the connection between the connecting part 2c and the base plate 1a.

[0035] In this embodiment, more specifically, the diameter of fastener h2 matches the diameter of connection hole h1. A portion of fastener h2 passes through connection hole h1 and is exposed on the top surface of connection portion 2c. This portion, referred to as locking portion h21, is inserted through connection hole h1. After the locking portion h21 of fastener h2 passes through connection hole h1, the bottom surface of connection portion 2c abuts against the bottom surface of recessed groove portion 1e. Pressure is applied to locking portion h21 using a tool to deform it. After deformation, the locking portion h21 becomes larger than connection hole h1 and can clamp connection portion 2c with recessed groove portion 1e, completing the fixed connection. This method of fixed connection is simple to operate and ensures a secure connection. Furthermore, the locking portion h21 can press against the top surface of connection portion 2c, further tightening the fit between connection portion 2c and recessed groove portion 1e, thereby further improving their sealing and preventing gas leakage.

[0036] In this embodiment, the fastener h2 and the recessed groove portion 1e are integrally connected and can be processed into an integral structure through a mold, so that the fastener h2 is not easily loosened on the recessed groove portion 1e, thereby improving the reliability of subsequent fixed connection.

[0037] In this embodiment, the upper half pipe 2a is provided with at least one connection portion 2c at the edge of its head end, and the upper half pipe 2a is provided with at least one connection portion 2c at the edges on both sides thereof. The number of connection portions 2c provided at the head end and the edges on both sides of the upper half pipe 2a needs to be reasonably set according to actual application requirements.

[0038] In this embodiment, the connection portion 2c corresponding to the head end of the upper half pipe 2a is formed at the head end, and the connection portions 2c corresponding to both sides of the upper half pipe 2a are formed by protruding outward from both sides of the upper half pipe 2a.

[0039] In this embodiment, an air inlet a1 and an air outlet a2 are formed at the head and tail ends of the ejector pipe 2, respectively. The ejector pipe 2 comprises an ejector section 21 and a redirecting section 22, arranged sequentially along the gas path. The ejector section 21 is used to inject air from the air inlet a1 and mix it with the gas, while the redirecting section 22 is used to change the direction of the gas path. Specifically, the gas path direction of the ejector pipe 2 changes as it passes through the ejector section 21 and the redirecting section 22, causing the ejection direction of the gas outlet a2 to be tangential to the outer fire cavity c.

[0040] In this embodiment, an ejection section 21 and a redirecting section 22 are provided on the ejection pipe 2, wherein the ejection section 21 is equivalent to the ejection pipe 2 in the prior art. The gas nozzle on the nozzle holder injects gas from the air inlet a1 of the ejection pipe 2. The ejection section 21 utilizes the negative pressure difference formed by the high-speed flow of the gas to draw air outside the ejection pipe 2 into the ejection section 21 and mix it with the gas to form a mixed gas, which can ensure that the gas can be fully burned during combustion. The redirecting section 22 can change the gas path direction of the ejection pipe 2 after it passes through the ejection section 21, so that the mixed gas is finally ejected into the outer fire cavity c from the gas outlet a2 in a direction tangent to the outer fire cavity c. By changing the direction of the gas path of the injection pipe 2 through the redirecting section 22 and making it tangential to the outer fire cavity c, the mixed gas ejected from the gas outlet a2 can flow in a circumferential direction along the outer fire cavity c, and can avoid the loss of kinetic energy caused by the mixed gas directly impacting the outer ring 1c, thereby increasing the circumferential flow speed of the mixed gas in the outer fire cavity c and forming a circular flow, extending the flow path length of the mixed gas in the outer fire cavity c, and then being able to improve the distribution uniformity of the mixed gas in the outer fire cavity c, thereby improving the combustion uniformity of the outer fire ring.

[0041] In this embodiment, the ejector pipe 2 further comprises an extension section 23, which is located downstream of the redirecting section 22 along the gas path. This means that the ejector pipe 2 is sequentially arranged along the gas path as an ejector section 21, a redirecting section 22, and an extension section 23. The extension section 23 can effectively extend the total length of the ejector pipe 2, thereby extending the flow path of the mixed gas within the ejector pipe 2, thereby achieving a more complete mixing of the gas and air. The complete mixing ensures that each gas molecule has sufficient oxygen for complete combustion, thereby improving combustion efficiency and significantly reducing emissions of incomplete combustion products such as carbon monoxide (CO) and unburned hydrocarbons (HC). In addition, the mixed gas obtained by fully mixing the gas and air maintains a stable combustion flame during combustion, preventing flameout or deflagration.

[0042] Implementation Case 2:

[0043] A gas stove includes a burner, wherein the burner is as described in Example 1.

[0044] Finally, it should be noted that the above implementation cases are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above implementation cases, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above implementation cases, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation cases of the present invention.

Claims

1. A burner, characterized in that: include: The shell has a bottom plate and an annular outer fire cavity inside; The ejection pipe comprises an upper half pipe and a lower half pipe, wherein the lower half pipe is integrally connected to the bottom plate of the shell, and the edge of the upper half pipe has a plurality of connecting parts, which are attached to the bottom plate and fixedly connected to the bottom plate.

2. The burner according to claim 1, characterized in that The bottom plate of the shell has a recessed groove portion at a position corresponding to the connecting portion, the bottom surface of the connecting portion is attached to the bottom surface of the groove portion, and the side edge of the connecting portion is attached to the groove wall surface of the groove portion.

3. The burner according to claim 2, characterized in that The sink portion is provided with at least one fastener, and the connecting portion is provided with at least one connecting hole for fixed connection with the fastener.

4. The burner according to claim 3, characterized in that The fastener has a locking portion that passes through the connecting hole and is exposed on the top surface of the connecting portion. The locking portion is used to clamp the connecting portion with the recessed portion after being deformed by pressure.

5. The burner according to claim 3, characterized in that The fastener and the recessed portion are integrally connected.

6. The burner according to claim 1, characterized in that The upper half pipe is provided with at least one connecting portion at the edge of the head end thereof, and the upper half pipe is provided with at least one connecting portion at the edges of both sides thereof.

7. The burner according to any one of claims 1 to 6, characterized in that: The ejection pipe has an ejection section and a redirection section arranged along the direction of the gas path. The ejection section is used to inject air from the air inlet and mix it with the fuel gas; the redirection section is used to change the direction of the gas path and make the injection direction of the air outlet tangent to the outer fire cavity.

8. The burner according to claim 7, characterized in that The ejector pipe further comprises an extension section, which is located downstream of the direction-changing section along the gas path.

9. A gas stove, characterized in that: The burner comprises the burner according to any one of claims 1 to 8.

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