CN213818220U - Ceramic electric heating element assembly - Google Patents
Ceramic electric heating element assembly Download PDFInfo
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- CN213818220U CN213818220U CN202022825203.8U CN202022825203U CN213818220U CN 213818220 U CN213818220 U CN 213818220U CN 202022825203 U CN202022825203 U CN 202022825203U CN 213818220 U CN213818220 U CN 213818220U
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Abstract
The utility model discloses a ceramic electric heating element subassembly, including ceramic heat-generating body and metal casing, its characterized in that: the wiring terminal of the ceramic heating element is arranged in the metal shell, the end face and the side face of the wiring terminal of the ceramic heating element are respectively connected with a positive electrode wire and a negative electrode wire, and an insulating heat conduction material is filled between the inner wall of the metal shell and the ceramic heating element. Adopt the utility model discloses a ceramic electric heating element subassembly, it is first: the process is simplified, and the cost is reduced. Secondly, guarantee reliability and the gas tightness of connection, solved the gas leakage that current structure exists and the problem that drops. Thirdly, the method comprises the following steps: the heat conducting capacity of the tail part of the ceramic heating body can be enhanced through the structure. And the heat conduction time is long, and the ignition device is suitable for ignition on the DPF.
Description
Technical Field
The utility model relates to a ceramic electric heating element subassembly.
Background
The ceramic electric heating element is used as a heating element and is used as an igniter, such as ignition of an engine of a motor vehicle, ignition of gas, ignition of a DPF (diesel particulate filter), etc., although the ceramic electric heating element may be used as a heating element. When the ceramic electric heater is used as an igniter of the DPF, it is necessary to maintain the ignition time for more than 20 minutes, and the reliability of the igniter is very high.
The general ceramic electric heating body comprises a heating body, wherein the electric connection end of the heating body is connected with a positive electrode wire and a negative electrode wire, the heating body is electrified to heat, and ignition is carried out after a certain temperature is reached. In the prior art, the terminal of the heating element of the ceramic electric heating element assembly is installed in a ceramic tube, and a metal material is required to be sleeved outside the ceramic tube. The structure has the advantages of complex process, easy air leakage and falling off, poor heat dissipation effect and high cost. The metal shell is wrapped outside the ceramic electric heater as a negative electrode, but the structure reliability is low, and once the metal shell is loosened or separated, the ceramic electric heater cannot work.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a ceramic electric heating element subassembly that the reliability is strong and simple process.
In order to achieve the above object, the present invention is realized as follows: the utility model provides a ceramic electric heating element subassembly, includes ceramic heat-generating body and metal casing, its characterized in that: the wiring terminal of the ceramic heating element is arranged in the metal shell, the end face and the side face of the wiring terminal of the ceramic heating element are respectively connected with a positive electrode wire and a negative electrode wire, and an insulating heat conduction material is filled between the inner wall of the metal shell and the ceramic heating element. By adopting the scheme, the effects of simplifying the process, saving the cost and improving the reliability of the assembly can be achieved.
In order to further facilitate the installation of the ceramic electric heating body assembly and other devices, the metal shell is provided with a front section and a rear section, and the outer diameter of the front section is smaller than that of the rear section. Wherein, a connecting body can be arranged on the outer wall of the front section. The connecting body may optionally be an external thread. Other forms such as a key, spline, weld, etc. may of course be selected.
For further convenient installation, the inner diameter of the cavity of the front section is smaller than that of the cavity of the rear section, and the wiring end of the ceramic heating body extends into the cavity of the front section of the metal shell.
In order to further improve the sealing performance, a metal transition sleeve is arranged on the inner wall of the front-section cavity of the metal shell, and the ceramic heating body is matched with the metal transition sleeve. Preferably, the ceramic heating element is welded to the metal transition sleeve, and the metal transition sleeve is welded to the inner wall of the front-section cavity of the metal shell. For further convenient installation, an annular groove is arranged at the joint of the outer walls of the front section and the rear section of the metal shell.
In order to further facilitate the installation of the electric wire, the rear section cavity of the metal shell is provided with a step, and the inner diameter of one side of the rear section cavity close to the front section cavity is smaller than that of one side of the front section cavity far away.
Preferably, the insulating and heat conducting material is one or more of ceramic gel, alumina insulating powder, insulating ceramic powder or resin.
Has the advantages that:
the utility model discloses a ceramic heater structure is with ceramic heat-generating body direct mount in the metal casing to fill for example insulating heat conduction materials such as ceramic congeals sizing material in direct metal casing and carry out insulating, heat conduction, sealed and waterproof function. Such a structure is first: the process is simplified, and the cost is reduced. Secondly, guarantee reliability and the gas tightness of connection, solved the gas leakage that current structure exists and the problem that drops. Thirdly, the method comprises the following steps: the heat conducting capacity of the tail part of the ceramic heating body can be enhanced through the structure.
Drawings
FIG. 1 is a schematic structural view (cross section) of a ceramic electric heating element assembly according to an embodiment.
Description of reference numerals: 1 metal casing, 2 ceramic heating elements, 3 negative pole electric wires, 4 insulating heat conduction materials, 5 metal transition covers, 6 back ends, 7 front ends, 8 steps, 9 positive pole electric wires.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and any modifications or replacements within the basic spirit of the embodiments still fall within the scope of the present invention claimed in the claims.
Example 1: as shown in fig. 1, the present embodiment provides a ceramic electric heater assembly, including ceramic heating element 2 and metal casing 1, the wiring end of ceramic heating element sets up in the metal casing, the terminal surface and the side of the wiring end of ceramic heating element are connected with positive electric wire 9 and negative electric wire 3 respectively, it has insulating heat conduction material to fill between inside and the ceramic heating element of metal casing, insulating material is ceramic gel material.
In this embodiment, the insulating and heat conducting material filled between the inner cavity of the metal shell and the ceramic heating element means that only the ceramic gel material is filled between the inner cavity of the metal shell and the ceramic heat conductor, and no ceramic part is disposed. The ceramic gel material can ensure the insulation and isolation in a narrow space, so that the volume of the metal shell can be reduced, and the occupied space is reduced.
Adopt the ceramic electric heating element subassembly of this embodiment, first: the process is simplified, and the cost is reduced. Secondly, guarantee reliability and the gas tightness of connection, solved the gas leakage that current structure exists and the problem that drops. Thirdly, the method comprises the following steps: the heat conducting capacity of the tail part of the ceramic heating body can be enhanced through the structure. And the heat conduction time is long, and the ignition device is suitable for ignition on the DPF.
Example 2: as shown in FIG. 1, the present embodiment provides a ceramic electric heating element assembly, which comprises a ceramic heating element 2 and a metal casing 1, wherein the metal casing has a front section 7 and a rear section 8, and the inner diameter of the front section chamber is smaller than that of the rear section chamber. The wiring end of the ceramic heating element extends into the metal shell from the front section cavity of the metal shell, the end face and the side face of the wiring end of the ceramic heating element are respectively connected with a positive electrode wire 9 and a negative electrode wire 3, and insulating ceramic powder is filled in the metal shell. The ceramic heating body is directly connected with the inner wall of the front-section cavity of the metal shell in a welding mode. For the ceramic heating element with high excircle size precision, the ceramic heating element can also be pressed into the front section cavity of the metal shell by direct interference fit.
Adopt the ceramic electric heating element subassembly of this embodiment, first: the process is simplified, and the cost is reduced. Secondly, guarantee reliability and the gas tightness of connection, solved the gas leakage that current structure exists and the problem that drops. Thirdly, the method comprises the following steps: the heat conducting capacity of the tail part of the ceramic heating body can be enhanced through the structure. And the heat conduction time is long, and the ignition device is suitable for ignition on the DPF.
Example 3: as shown in FIG. 1, the present embodiment provides a ceramic electric heating element assembly, which comprises a ceramic heating element 2 and a metal casing 1, wherein the metal casing has a front section 7 and a rear section 6, and the inner diameter of the front section chamber is smaller than that of the rear section chamber. In addition, a metal transition sleeve 5 is arranged on the inner wall of the front-section cavity of the metal shell. The ceramic heating element with the metal transition sleeve extends into the metal shell from the front section cavity of the metal shell, and the metal transition sleeve is matched with the front section inner cavity of the metal shell. The tail part of the ceramic heating body penetrates through the front section cavity of the metal shell and is positioned in the rear section cavity, and the end face and the side face of the tail end of the ceramic heating body in the rear section cavity are respectively connected with a positive electrode wire 9 and a negative electrode wire 3. Then, the rear-section cavity is filled with ceramic gel or alumina insulating powder, so that the ceramic gel or alumina insulating powder is filled between the inner wall of the rear-section cavity and the ceramic heating element.
The ceramic heating body is connected with the metal transition sleeve in a welding mode, and the metal transition sleeve is connected with the cavity wall of the front section inner cavity of the metal shell in a welding mode.
As another embodiment of this embodiment, the ceramic heating element is connected to the metal transition sleeve in an interference fit manner, and the metal transition sleeve is welded to a cavity wall of the front-section inner cavity of the metal shell. Or, the ceramic heating body is connected with the metal transition sleeve in an interference fit mode, and the metal transition sleeve is connected with the front section inner cavity of the metal shell in an interference fit mode.
Adopt the ceramic electric heating element subassembly of this embodiment, first: the process is simplified, and the cost is reduced. Secondly, guarantee reliability and the gas tightness of connection, solved the gas leakage that current structure exists and the problem that drops. Thirdly, the method comprises the following steps: the heat conducting capacity of the tail part of the ceramic heating body can be enhanced through the structure. And the heat conduction time is long, and the ignition device is suitable for ignition on the DPF.
Example 4: as shown in fig. 1, the present embodiment provides a ceramic electric heating element assembly, which includes a ceramic heating element and a metal casing, wherein the metal casing has a front section and a rear section, and the inner diameter of the front section chamber is smaller than the inner diameter of the rear section chamber. In addition, a metal transition sleeve is arranged on the inner wall of the front-section cavity of the metal shell. The ceramic heating element with the metal transition sleeve extends into the metal shell from the front section cavity of the metal shell, and the metal transition sleeve is matched with the front section inner cavity of the metal shell. The tail part of the ceramic heating body penetrates through the front section cavity of the metal shell and is positioned in the rear section cavity, and the end face and the side face of the tail end of the ceramic heating body in the rear section cavity are respectively connected with a positive electrode wire and a negative electrode wire. The metal shell is filled with ceramic gel materials or resin materials. The ceramic heating body is connected with the metal transition sleeve in a welding mode, and the metal transition sleeve is connected with the cavity wall of the front section inner cavity of the metal shell in a welding mode.
In this embodiment, when the resin material is used, a waterproof layer needs to be added at the rear end of the metal shell chamber.
As another embodiment of this embodiment, the rear-stage cavity of the metal shell has a step 8, and the inner diameter of the rear-stage cavity on the side close to the front-stage cavity is smaller than the inner diameter of the rear-stage cavity on the side far from the front-stage cavity by the step 8. Through the design, a larger space is convenient to obtain for installing the electric wire at the tail part of the ceramic heating body.
Adopt the ceramic electric heating element subassembly of this embodiment, first: the process is simplified, and the cost is reduced. Secondly, guarantee reliability and the gas tightness of connection, solved the gas leakage that current structure exists and the problem that drops. Thirdly, the method comprises the following steps: the heat conducting capacity of the tail part of the ceramic heating body can be enhanced through the structure. And the heat conduction time is long, and the ignition device is suitable for ignition on the DPF.
Example 5: this embodiment is an improvement over embodiment 1, 2, 3, or 4, in which the outer diameter of the front section of the metal shell is smaller than that of the rear section, and a connecting body is provided at the outer wall of the front section. The connecting body can be selected as an external thread, and other forms such as a connecting key, a spline and the like can be selected. In the present embodiment in the form of an external thread.
Through the setting of the different external diameters of the anterior segment and the back end of metal casing to and the setting of connector, the anterior segment of the ceramic electric heating body subassembly of being convenient for is installed on other devices such as engine, gas-cooker, DPF etc.. And the steps of the front section and the rear section can also play a role in limiting.
As another implementation manner of this embodiment, an annular groove is disposed at a junction of outer walls of the front section and the rear section of the metal shell, and the annular groove is a tool withdrawal groove.
Claims (9)
1. The utility model provides a ceramic electric heating element subassembly, includes ceramic heat-generating body and metal casing, its characterized in that: the wiring terminal of the ceramic heating element is arranged in the metal shell, the end face and the side face of the wiring terminal of the ceramic heating element are respectively connected with a positive electrode wire and a negative electrode wire, and an insulating heat conduction material is filled between the inner wall of the metal shell and the ceramic heating element.
2. A ceramic heater assembly as set forth in claim 1 wherein: the metal shell has a front section and a rear section, and the outer diameter of the front section is smaller than that of the rear section.
3. A ceramic heater assembly as set forth in claim 2 wherein: the outer wall of the front section is provided with a connector.
4. A ceramic heater assembly as set forth in claim 3 wherein: the connecting body is an external thread.
5. A ceramic heater assembly as claimed in claim 2, 3 or 4, wherein: the inner diameter of the cavity of the front section is smaller than that of the cavity of the rear section, and the wiring end of the ceramic heating body extends into the cavity of the front section of the metal shell.
6. A ceramic heater assembly as set forth in claim 5 wherein: and a metal transition sleeve is arranged on the inner wall of the front-section cavity of the metal shell, and the ceramic heating body is matched with the metal transition sleeve.
7. A ceramic electric heater assembly as set forth in claim 6, wherein: the ceramic heating element is connected with the metal transition sleeve in a welding mode, and the metal transition sleeve is connected with the inner wall of the front section cavity of the metal shell in a welding mode.
8. A ceramic electric heater assembly as set forth in claim 7, wherein: and an annular groove is formed at the joint of the outer walls of the front section and the rear section of the metal shell.
9. A ceramic heater assembly as claimed in claim 6, 7 or 8, wherein: the rear section cavity of the metal shell is provided with a step, and the inner diameter of one side, close to the front section cavity, of the rear section cavity is smaller than that of one side, far away from the front section cavity, of the rear section cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022825203.8U CN213818220U (en) | 2020-11-30 | 2020-11-30 | Ceramic electric heating element assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022825203.8U CN213818220U (en) | 2020-11-30 | 2020-11-30 | Ceramic electric heating element assembly |
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| CN213818220U true CN213818220U (en) | 2021-07-27 |
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| CN202022825203.8U Active CN213818220U (en) | 2020-11-30 | 2020-11-30 | Ceramic electric heating element assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700586A (en) * | 2021-09-29 | 2021-11-26 | 重庆利迈陶瓷技术有限公司 | Ceramic electric heating plug |
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2020
- 2020-11-30 CN CN202022825203.8U patent/CN213818220U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700586A (en) * | 2021-09-29 | 2021-11-26 | 重庆利迈陶瓷技术有限公司 | Ceramic electric heating plug |
| WO2023051276A1 (en) * | 2021-09-29 | 2023-04-06 | 重庆利迈科技有限公司 | Ceramic glow plug |
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Address after: 401329 no.15-1, Fengsheng Road, Jiulongpo District, Chongqing Patentee after: Chongqing Limai Technology Co.,Ltd. Address before: 401329 no.15-1, Fengsheng Road, Jiulongpo District, Chongqing Patentee before: CHONGQING LE-MARK CERAMIC TECHNOLOGY Co.,Ltd. |
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