Silicon carbide igniter assembling structure

Abstract

The utility model relates to the field of igniters, in particular to a silicon carbide igniter assembling structure which comprises an assembling body, the assembling body comprises a shell and a ceramic seat matched with the shell, the front face of the shell is in an open type design, one end of the shell is provided with a heat dissipation part, and the other end of the shell is provided with an assembling part. The ceramic seat is slidably mounted in the shell through the assembling part, and a limiting step is arranged in the shell for limiting; a connecting part is also arranged on the back surface of the shell in a matching manner; the fixing device is simple in structure, convenient to manufacture, firm in fixation, simple and easy to assemble, and firm and does not fall off.

Description

Technical Field

[0001] The utility model relates to an assembly structure in the field of igniters. Background Art

[0002] The hot surface igniter with threaded structure or flat structure is used in closed gas ovens, gas dryers, and boiler equipment. It can resist oxidation at high temperature, and has high efficiency and safety performance when connected in series with bimetallic gas valves. At the same time, it solves the problem of deflagration and explosion caused by ignition of a large amount of gas after ignition due to poor ignition of ordinary igniters. Its process is to obtain high-density and low-resistivity products by reaction sintering and recrystallization. Due to the sensitivity of the heating element silicon carbide to the sintering temperature, it has at least 70 crystal forms, and the production process is particularly complex. It has stable chemical properties, high thermal conductivity, small thermal expansion coefficient, good wear resistance, and high thermal conductivity; it can withstand extremely cold and hot temperature changes without breaking. The silicon carbide igniter can directly ignite the main burner without using an indicator light; the traditional silicon carbide igniter has a complex assembly structure, and the assembly is unreliable, and the practical installation is not convenient, which is not conducive to long-term use. Utility Model Content

[0003] The utility model aims to provide a silicon carbide igniter assembly structure, which has the advantages of simple structure, convenient manufacture, firm fixation, simple assembly and firmness without falling off.

[0004] The purpose of the utility model is achieved as follows: a silicon carbide igniter assembly structure, including an assembly body, the assembly body including a shell and a ceramic seat arranged in conjunction with the shell, the front of the shell is open-type, one end of the shell is provided with a heat dissipation portion, the other end of the shell is provided with an assembly portion, the ceramic seat is slidably installed into the shell through the assembly portion, and a limiting step is provided inside the shell for limiting the position; the back of the shell is also provided with a connecting portion, and chamfers are provided on all sides of the ceramic seat.

[0005] When the utility model is working, an inverted triangular step is provided on the ceramic seat, and a limit step and an extension arm are provided on the shell. The ceramic seat is slidably installed into the shell through the assembly part, and the extension arm will be guided along the groove on the ceramic seat and slide inward. When encountering the inverted triangular step on the ceramic seat, it will be stretched in the opposite direction. When the extension arm slides over the inverted triangular step, the extension arm rebounds and gathers inward, and is just stuck with the convex surface of the inverted triangular step on the ceramic seat. At the same time, the ceramic seat is blocked by the upper limit step of the shell when it moves forward. At the same time, the limit edge ensures the limit fit installation between the ceramic seat and the shell to avoid looseness.

[0006] The beneficial effects of the utility model are that the utility model has a simple structure, is easy to manufacture, is firmly fixed, is easy to assemble, and is firm and will not fall off.

[0007] As a further improvement of the utility model, in order to ensure that the shell and the ceramic seat can be easily slidably installed and assembled reliably; the cross-section of the shell is concave-shaped, and the assembly part includes an extension arm and limiting edges arranged on both sides of the shell, and the extension arm extends toward the front of the shell and is arranged at an angle of 30-45° with the shell.

[0008] As a further improvement of the present invention, in order to ensure the assembly fit between the shell and the ceramic seat, the limiting edge is provided with two chamfers that fit the ceramic seat.

[0009] As a further improvement of the utility model, in order to ensure that the limiting step can effectively limit the installation of the ceramic seat and avoid loosening; the limiting step is arranged on the shell and is arranged in the direction of extension of the extension arm, and a plurality of the limiting steps are arranged side by side.

[0010] As a further improvement of the utility model, in order to ensure reliable assembly and stable installation without unnecessary sliding, a groove is provided on any one side of the ceramic seat along the direction of sliding assembly with the shell, an inverted triangular step is provided in the groove, and the raised side of the inverted triangular step is provided in conjunction with the extending arm.

[0011] As a further improvement of the present invention, in order to ensure quick and reliable installation and not easy to be damaged, the shell is made of metal material, and the extension arm is made of metal elastic material. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural diagram of the shell in the utility model.

[0013] Figure 2 It is the front view of the assembly in the utility model.

[0014] Figure 3 It is a structural diagram of the ceramic seat in the utility model.

[0015] Figure 4 It is a rear view of the assembly in the utility model.

[0016] Figure 5 for Figure 4 Middle BB view.

[0017] Among them, 1 is a limiting step, 2 is an extending arm, 3 is a shell, 4 is a ceramic seat, 5 is a connecting part, 6 is a heat dissipation part, 7 is a groove, 8 is an inverted triangle step, and 9 is a limiting edge. DETAILED DESCRIPTION

[0018] like Figure 1-5 As shown, the technical solution of the utility model will be further described below in conjunction with embodiments:

[0019] The purpose of the utility model is achieved as follows: a silicon carbide igniter assembly structure, including an assembly, the assembly including a shell 3 and a ceramic seat 4 arranged in cooperation with the shell 3, the front of the shell 3 is open-type, one end of the shell 3 is provided with a heat dissipation portion 6, the other end of the shell 3 is provided with an assembly portion, the ceramic seat 4 is slidably installed into the shell 3 through the assembly portion, and a limiting step 1 is provided inside the shell 3 for limiting; the back of the shell 3 is also provided with a connecting portion 5, and chamfers are provided around the ceramic seat 4; the cross-section of the shell 3 is concave, and the assembly portion includes a protruding arm 2 and a heat dissipation portion 6 arranged on the shell 3. The limiting edges 9 on both sides of the body 3, the extending arm 2 extends toward the front of the shell 3 and is set at an angle of 30-45° with the shell 3; the limiting edges 9 are provided with two chamfers that fit the ceramic seat 4; the limiting step 1 is provided on the shell 3 and is arranged in the direction of extending the extending arm 2, and a number of the limiting steps 1 are arranged side by side; any one side of the ceramic seat 4 is provided with a groove 7 along the direction of sliding assembly with the shell 3, and an inverted triangle step 8 is provided in the groove 7, and the raised side of the inverted triangle step 8 is provided in cooperation with the extending arm 2; the shell 3 is made of metal material, and the extending arm 2 is made of metal elastic material.

[0020] When the utility model is working, an inverted triangular step is provided on the ceramic seat 4, and a limit step 1 and an extension arm 2 are provided on the shell 3. The ceramic seat 4 is slidably installed into the shell 3 through the assembly part, and the extension arm 2 will be guided along the groove 7 on the ceramic seat 4 and slide inward. When encountering the inverted triangular step 8 on the ceramic seat 4, it will be stretched in the opposite direction. When the extension arm 2 slides over the inverted triangular step 8, the extension arm 2 rebounds and contracts inward, and is just stuck with the convex surface of the inverted triangular step 8 on the ceramic seat 4. At the same time, the ceramic seat 4 is blocked by the limit step 1 of the shell 3 when it moves forward. At the same time, the limit edge 9 ensures that the ceramic seat 4 and the shell 3 are limited and fitted to avoid loosening.

[0021] The present utility model is not limited to the above-mentioned embodiments. On the basis of the technical solution disclosed in the present utility model, technicians in this field can make some substitutions and deformations to some technical features therein according to the disclosed technical content without creative labor, and these substitutions and deformations are all within the protection scope of the present utility model.

Claims

1. A silicon carbide igniter assembly structure, comprising an assembly body, characterized in that: The assembly includes a shell and a ceramic seat arranged in conjunction with the shell. The front of the shell is open in design. A heat dissipation portion is arranged at one end of the shell, and an assembly portion is arranged at the other end of the shell. The ceramic seat is slidably installed into the interior of the shell through the assembly portion. A limiting step is arranged inside the shell for limiting the position. A connecting portion is also arranged in conjunction with the back of the shell, and chamfers are arranged on all sides of the ceramic seat.

2. The silicon carbide igniter assembly structure according to claim 1, characterized in that: The cross section of the shell is in a concave shape, and the assembly portion includes a protruding arm and limiting edges arranged on both sides of the shell. The protruding arm extends toward the front of the shell and is arranged at an angle of 30-45 degrees with the shell.

3. A silicon carbide igniter assembly structure according to claim 2, characterized in that: The limiting edges are provided with two chamfers which fit the chamfers of the ceramic seat.

4. The silicon carbide igniter assembly structure according to claim 1, characterized in that: The limiting step is arranged on the housing and is arranged in coordination with the extending direction of the extending arm, and a plurality of the limiting steps are arranged side by side.

5. The silicon carbide igniter assembly structure according to claim 1, characterized in that: Any one side of the ceramic seat is provided with a groove along the direction of sliding assembly with the shell, an inverted triangle step is provided in the groove, and a raised side of the inverted triangle step is provided in cooperation with the extending arm.

6. The silicon carbide igniter assembly structure according to claim 2, characterized in that: The shell is made of metal material, and the extending arm is made of metal elastic material.

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