Combustor and gas stove

Abstract

The utility model discloses a burner, which comprises a shell, an outer fire cavity channel, an inner fire cavity channel and an inner fire cavity channel, and the injection pipeline is arranged on the shell and used for injecting mixed gas formed by mixing fuel gas and air into the outer fire cavity channel, one part of the injection pipeline is integrally connected with the shell, and the other part of the injection pipeline is fixedly connected to the shell. The utility model further discloses a gas stove with the burner. The beneficial effect of the utility model is that the manufacturing difficulty is reduced.

Description

Technical Field

[0001] The utility model 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] In the current prior art, the ejection pipe is usually connected to the bottom of the burner shell, more specifically, it is connected to the bottom of the ignition distributor. The ignition distributor is made by mold processing, and the ejection pipe is Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a burner and a gas stove, which reduce the manufacturing difficulty.

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

[0006] A burner comprising:

[0007] The shell has an annular outer fire cavity inside;

[0008] The ejector pipe is arranged on the shell and is used to inject the mixed gas formed by the mixture of gas and air into the outer fire cavity. A part of the ejector pipe is integrally connected to the shell, and the other part is fixedly connected to the shell.

[0009] As a further improvement of the present invention, the ejection pipe includes an upper half pipe and a lower half pipe, the lower half pipe is integrally connected to the bottom plate of the shell, and the upper half pipe is fixedly connected to the bottom plate of the shell.

[0010] As a further improvement of the present invention, the upper half pipe and the bottom plate of the shell are fixedly connected by a plurality of fasteners.

[0011] As a further improvement of the present invention, the upper half pipe has a plurality of connection holes located at its edge for fixing and connecting the fasteners.

[0012] As a further improvement of the present invention, the ejector pipe includes an upper half pipe and a lower half pipe, the upper half pipe is integrally connected to the bottom plate of the shell, and the lower half pipe is fixedly connected to the bottom plate of the shell.

[0013] As a further improvement of the present invention, the lower half pipe and the bottom plate of the shell are fixedly connected by a plurality of fasteners.

[0014] As a further improvement of the present invention, the lower half pipe has a plurality of connection holes located at its edge for fixing and connecting the fasteners.

[0015] 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.

[0016] 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.

[0017] A gas stove comprises the burner.

[0018] Beneficial effects of the utility model:

[0019] 1. By setting the ejector pipe as a split structure, one part is integrally connected to the shell, which can greatly simplify the mold structure and reduce the manufacturing difficulty, while the other part is connected to the shell by a fixed connection, so that the ejector pipe structure is complete and can perform its function normally;

[0020] 2. The ejector pipe is divided into an upper half pipe and a lower half pipe, one of which is integrally connected to the shell, and the other is connected to the shell, which is convenient for connection and installation;

[0021] 3. The ejector section utilizes the negative pressure difference created by the high-speed flow of gas to draw air outside the ejector pipe into the ejector section, where it mixes with the gas to form a mixed gas. The redirecting section changes the direction of the ejector pipe's gas path and makes it tangential to the outer fire cavity, allowing the mixed gas ejected from the gas outlet to flow in a circular direction along the outer fire cavity, avoiding kinetic energy loss caused by direct impact on the outer ring. This extends the flow path length of the mixed gas, thereby improving distribution uniformity and enhancing combustion uniformity in the outer fire ring.

[0022] 4. The extension section can effectively extend the total length of the ejector pipe, thereby extending the flow path of the mixed gas in the ejector pipe, thereby making the mixing of gas and air more complete. Full mixing can ensure that each gas molecule has enough oxygen for complete combustion, thereby improving combustion efficiency and significantly reducing the emission of incomplete combustion products such as carbon monoxide (CO) and unburned hydrocarbons (HC). BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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:

[0024] Figure 1 A schematic diagram of a burner for implementing Example 1;

[0025] Figure 2 Schematic diagram of the lower and upper pipes of implementation case 1;

[0026] Figure 3 This is a schematic cross-sectional view of the ejection pipe in Example 1;

[0027] Figure 4 A schematic diagram of a burner for implementing Example 2;

[0028] Figure 5 Schematic diagram of the lower half of the pipeline for implementation case 2. DETAILED DESCRIPTION

[0029] The present invention will be described in further detail below based on the accompanying drawings and implementation examples.

[0030] 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.

[0031] Implementation Case 1:

[0032] Reference Figure 1-3A 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.

[0033] In this embodiment, a portion of the ejector pipe 2 is integrally connected to the housing 1, and the other portion is fixedly connected to the housing 1. Under the premise that the ejector pipe 2 pursues performance and its structure is more complicated than the existing technology, the ejector pipe 2 is set as a split structure, a portion of which is integrally connected to the housing 1. More specifically, a portion of the ejector pipe 2 is integrally connected to the ignition divider 11, and the ignition divider 11 is made by mold processing, so the mold structure can be greatly simplified, making the manufacturing difficulty of the ignition divider 11 lower, while the other portion is connected to the ignition divider 11 by a fixed connection, so that the structure of the ejector pipe 2 is complete and can normally perform its function.

[0034] In this embodiment, the ejection pipe 2 includes an upper half pipe 2a and a lower half pipe 2b, wherein the lower half pipe 2b is integrally connected to the bottom plate 1a of the shell 1, that is, the bottom plate 1a of the ignition distributor 11, and the upper half pipe 2a is fixedly connected to the bottom plate 1a of the shell 1, so that the upper half pipe 2a and the lower half pipe 2b are combined to form a complete ejection pipe 2, so that it can inject the mixed gas formed by the mixture of gas and air into the outer fire cavity.

[0035] In this embodiment, the upper half pipe 2a and the bottom plate 1a of the shell 1, that is, the bottom plate 1a of the ignition distributor 11, are fixedly connected by a plurality of fasteners h2. The fasteners h2 can firmly fix the upper half pipe 2a to the bottom plate 1a of the shell 1, so that the structure of the ejection pipe 2 is complete.

[0036] In this embodiment, the upper duct 2a has multiple connection holes h1 located along its edge. These holes h1 are used to secure the fasteners h2. The holes h1 are positioned at least one at the leading edge of the upper duct 2a, and at least one at each side edge of the upper duct 2a. This ensures a uniform connection between the upper duct 2a and the bottom plate 1a of the housing 1, ensuring a secure and stable connection.

[0037] More specifically, in this embodiment, the top surface of the bottom plate 1a of the housing 1 has an integral, upright, rod-shaped fastener h2, corresponding to the connection hole h1. This fastener is manufactured using a mold. During installation, the connection hole h1 of the upper pipe 2a is aligned with the fastener h2, and the upper pipe 2a is pressed downward, allowing the fastener h2 to pass through the connection hole h1. A press is then used to press the top of the fastener h2, deforming it and snapping it onto the top surface of the upper pipe 2a, thereby securely connecting the upper pipe 2a.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Implementation Case 2:

[0042] In this implementation case, refer to Figure 4 、 Figure 5 The ejection pipe 2 includes an upper half pipe 2a and a lower half pipe 2b, wherein the upper half pipe 2a is integrally connected to the bottom plate 1a of the shell 1, that is, the bottom plate 1a of the ignition distributor 11, and the lower half pipe 2b is fixedly connected to the bottom plate 1a of the shell 1, so that the upper half pipe 2a and the lower half pipe 2b are combined to form a complete ejection pipe 2, so that it can inject the mixed gas formed by the mixture of gas and air into the outer fire cavity.

[0043] In this embodiment, the lower half pipe 2b and the bottom plate 1a of the shell 1, that is, the bottom plate 1a of the ignition distributor 11, are fixedly connected by a plurality of fasteners h2. The fasteners h2 can firmly fix the lower half pipe 2b to the bottom plate 1a of the shell 1, so that the structure of the ejection pipe 2 is complete.

[0044] In this embodiment, the lower duct half 2b has multiple connection holes h1 located along its edge. These holes h1 are used to secure fasteners h2. The arrangement of these holes h1, spaced along the edge of the lower duct half 2b, ensures a uniform connection between the upper duct half 2a and the bottom plate 1a of the housing 1, ensuring a secure and stable connection.

[0045] More specifically, in this embodiment, the bottom surface of the base plate 1a of the housing 1 has an integral, upright, rod-shaped fastener h2, corresponding to the connection hole h1. This fastener is manufactured using a mold. During installation, the connection hole h1 of the lower pipe 2b is aligned with the fastener h2, and the lower pipe 2b is pressed upward, allowing the fastener h2 to pass through the connection hole h1. A press is then used to press the top of the fastener h2, deforming it and snapping it onto the bottom surface of the lower pipe 2b, thereby securely connecting the lower pipe 2b.

[0046] Implementation Case 3:

[0047] A gas stove includes a burner, wherein the burner is as described in Example 1 or Example 2.

[0048] 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 an annular outer fire cavity inside; The ejector pipe is arranged on the shell and is used to inject the mixed gas formed by the mixture of gas and air into the outer fire cavity. A part of the ejector pipe is integrally connected to the shell, and the other part is fixedly connected to the shell.

2. The burner according to claim 1, characterized in that The ejector pipe comprises an upper half pipe and a lower half pipe, the lower half pipe is integrally connected to the bottom plate of the shell, and the upper half pipe is fixedly connected to the bottom plate of the shell.

3. The burner according to claim 2, characterized in that The upper half pipe and the bottom plate of the shell are fixedly connected by a plurality of fasteners.

4. The burner according to claim 3, characterized in that The upper half pipe has a plurality of connection holes located at its edge for fixing and connecting the fasteners.

5. The burner according to claim 1, characterized in that The ejector pipe includes an upper half pipe and a lower half pipe, the upper half pipe is integrally connected to the bottom plate of the shell, and the lower half pipe is fixedly connected to the bottom plate of the shell.

6. The burner according to claim 5, characterized in that The lower half pipe and the bottom plate of the shell are fixedly connected by a plurality of fasteners.

7. The burner according to claim 6, characterized in that The lower half pipe has a plurality of connection holes located at its edge for fixing and connecting the fasteners.

8. The burner according to any one of claims 1 to 7, 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.

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

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

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