Ignition rod made of silicon nitride ceramic material

Abstract

The utility model relates to an ignition rod made of silicon nitride ceramic materials, which comprises two terminals respectively connected with leads and an extension portion connected between the two terminals, the extension portion is in a torsion or bending shape, the two terminals are arranged at one end of the ignition rod made of the silicon nitride ceramic materials, and the two terminals are connected with the leads. And the middle section of the extension part is positioned at the other end of the ignition rod made of the silicon nitride ceramic material and is a heating position. Compared with other ignition rods in the prior art, the ignition rod made of the silicon nitride ceramic material is high in strength, good in durability, lower in use cost and quite wide in application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of heating material, especially to the technical field of ceramic material ignition rod, specifically refers to a silicon nitride ceramic material ignition rod. BACKGROUND

[0002] The existing ceramic material ignition rod has low strength, poor durability, short service life, high use cost and difficult popularization. Therefore, providing a ceramic material ignition rod with high strength, good durability, low use cost and wide application range has become an urgent problem in the field. SUMMARY

[0003] The utility model discloses a silicon nitride ceramic material ignition rod which overcomes the shortcomings of the prior art.

[0004] In order to achieve the above-mentioned purpose, the silicon nitride ceramic material ignition rod of the utility model has the following composition:

[0005] The silicon nitride ceramic material ignition rod comprises two wire terminals 11 connected with the lead wire 3 respectively and an extension part 12 connected between the two wire terminals 11, the extension part 12 has a twisted or curved shape, the two wire terminals 11 are located at one end of the silicon nitride ceramic material ignition rod 1, and the middle section of the extension part 12 is located at the other end of the silicon nitride ceramic material ignition rod 1 as a heating position.

[0006] In the silicon nitride ceramic material ignition rod, the extension part 12 comprises at least one reciprocating segment 13, each reciprocating segment 13 is connected in series between the two wire terminals 11 in a head-to-tail manner, and there is only one path passing through all the reciprocating segments 13 between the two wire terminals 11.

[0007] In the silicon nitride ceramic material ignition rod, there is a gap 14 between each reciprocating segment 13.

[0008] In the silicon nitride ceramic material ignition rod, the extension part 12 of the silicon nitride ceramic material ignition rod 1 is located on a plane, and the whole silicon nitride ceramic material ignition rod 1 is located in a flat plate layer with a certain height.

[0009] In the silicon nitride ceramic material ignition rod, the extension part 12 of the silicon nitride ceramic material ignition rod is in a spiral shape, and the whole silicon nitride ceramic material ignition rod 1 is a hollow cylinder.

[0010] In the silicon nitride ceramic material ignition rod, the extension part 12 and the two wire terminals 11 are integrally formed.

[0011] The silicon nitride ceramic material ignition rod further comprises a ceramic insulation shell 2 and two lead wires 3, the two lead wires 3 are respectively welded to the two connecting terminals 11 and connected to an external power supply; the welding position is located in the ceramic insulation shell 2, and the extension part 11 of the silicon nitride ceramic material ignition rod 1 extends out of the ceramic insulation shell 2.

[0012] The silicon nitride ceramic material ignition rod of the utility model comprises two connecting terminals connected with lead wires respectively and an extension part connected between the two connecting terminals, the extension part has a twisted or curved shape, the two connecting terminals are located at one end of the silicon nitride ceramic material ignition rod, and the middle section of the extension part is located at the other end of the silicon nitride ceramic material ignition rod as a heating position. Compared with other ignition rods in the prior art, the silicon nitride ceramic material ignition rod of the utility model has high strength, good durability, lower use cost and quite wide application range. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 Fig. 1 is a structure schematic view of the silicon nitride ceramic material ignition rod of the utility model.

[0014] Figure 2 Fig. 2 is a structure schematic view of the silicon nitride ceramic material ignition rod and the insulation shell assembly of the utility model.

[0015] Figure 3 Fig. 3 is a structure schematic view of the second embodiment of the silicon nitride ceramic material ignition rod of the utility model.

[0016] Figure 4 Fig. 4 is a structure schematic view of the third embodiment of the silicon nitride ceramic material ignition rod of the utility model.

[0017] Reference signs:

[0018] Silicon nitride ceramic material ignition rod 1, ceramic insulation shell 2, lead wire 3, connecting terminal 11, extension part 12, reciprocating section 13, gap 14 DETAILED DESCRIPTION

[0019] In order to enable the technical content of the utility model to be understood more clearly, the following embodiments are used for detailed description.

[0020] Please refer to Figure 1 Fig. 1 is a structure schematic view of the silicon nitride ceramic material ignition rod of the utility model.

[0021] In one embodiment, the silicon nitride ceramic material igniter rod comprises: two wire ends 11 connected to the lead wire 3 respectively and an extended portion 12 connected between the two wire ends 11, the extended portion 12 having a twisted or curved shape, the two wire ends 11 being located at one end of the silicon nitride ceramic material igniter rod 1 and the middle of the extended portion 12 being located at the other end of the silicon nitride ceramic material igniter rod 1 as the heating position.

[0022] In one embodiment, the silicon nitride ceramic material igniter rod comprises: two wire ends 11 connected to the lead wire 3 respectively and an extended portion 12 connected between the two wire ends 11, the extended portion 12 having a twisted or curved shape, the two wire ends 11 being located at one end of the silicon nitride ceramic material igniter rod 1 and the middle of the extended portion 12 being located at the other end of the silicon nitride ceramic material igniter rod 1 as the heating position.

[0023] In one embodiment, the silicon nitride ceramic material igniter rod comprises: two wire ends 11 connected to the lead wire 3 respectively and an extended portion 12 connected between the two wire ends 11, the extended portion 12 having a twisted or curved shape, the two wire ends 11 being located at one end of the silicon nitride ceramic material igniter rod 1 and the middle of the extended portion 12 being located at the other end of the silicon nitride ceramic material igniter rod 1 as the heating position. Figure 1 , 2 In one embodiment, the silicon nitride ceramic material igniter rod comprises: two wire ends 11 connected to the lead wire 3 respectively and an extended portion 12 connected between the two wire ends 11, the extended portion 12 having a twisted or curved shape, the two wire ends 11 being located at one end of the silicon nitride ceramic material igniter rod 1 and the middle of the extended portion 12 being located at the other end of the silicon nitride ceramic material igniter rod 1 as the heating position.

[0024] In one embodiment, the silicon nitride ceramic material igniter rod comprises: two wire ends 11 connected to the lead wire 3 respectively and an extended portion 12 connected between the two wire ends 11, the extended portion 12 having a twisted or curved shape, the two wire ends 11 being located at one end of the silicon nitride ceramic material igniter rod 1 and the middle of the extended portion 12 being located at the other end of the silicon nitride ceramic material igniter rod 1 as the heating position. Figure 4 In one embodiment, the silicon nitride ceramic material igniter rod comprises: two wire ends 11 connected to the lead wire 3 respectively and an extended portion 12 connected between the two wire ends 11, the extended portion 12 having a twisted or curved shape, the two wire ends 11 being located at one end of the silicon nitride ceramic material igniter rod 1 and the middle of the extended portion 12 being located at the other end of the silicon nitride ceramic material igniter rod 1 as the heating position.

[0025] In one embodiment, the silicon nitride ceramic material igniter rod comprises: two wire ends 11 connected to the lead wire 3 respectively and an extended portion 12 connected between the two wire ends 11, the extended portion 12 having a twisted or curved shape, the two wire ends 11 being located at one end of the silicon nitride ceramic material igniter rod 1 and the middle of the extended portion 12 being located at the other end of the silicon nitride ceramic material igniter rod 1 as the heating position.

[0026] In one embodiment, the silicon nitride ceramic material igniter rod comprises: two wire ends 11 connected to the lead wire 3 respectively and an extended portion 12 connected between the two wire ends 11, the extended portion 12 having a twisted or curved shape, the two wire ends 11 being located at one end of the silicon nitride ceramic material igniter rod 1 and the middle of the extended portion 12 being located at the other end of the silicon nitride ceramic material igniter rod 1 as the heating position.

[0027] The pressure of the die forming is 5-30 MPa, and the pressure maintaining time is 5-10 s.

[0028] The heating rate is 3-8 DEG C / min, and the highest temperature maintaining time is 15-60 min.

[0029] The method further comprises sedimentation, the ultrasonic cleaning is 1-5 times, the drying temperature is 50-120 DEG C, and the time is 6-12 h.

[0030] The method further comprises alcohol washing, the hollow silica microbead particle size is 5-25 mu m, the shell wall thickness is 0.2-7.5 mu m, and the purity is greater than 99%.

[0031] The obtained porous Si3N4 ceramic material has a porosity of 69.5-91.3%, a specific surface area of 3.52-8.24 m2 / g, an average diameter of primary pores of 3.6-16.6 mu m, an average size of secondary pores of 40-135 nm, a bending strength of 138.4-273.4 MPa, and a compressive strength of 23.7-45.1 MPa.

[0032] As shown in Figure 2 The silicon nitride ceramic material ignition rod 1 further comprises a ceramic insulating shell 2 and two lead wires 3, the two lead wires 3 are respectively welded to the two connecting ends 11 and connected to an external power supply; the welding position is located in the ceramic insulating shell 2, and the extension part 12 of the silicon nitride ceramic material ignition rod 1 extends out of the ceramic insulating shell 2.

[0033] In practical application, the silicon nitride ceramic material ignition rod can be installed in various application occasions. Figure 2 As shown in the figure, the tail ends of the two lead wires can be connected to various external power supplies according to needs to form a loop, and the power supply can be designed as DC 12V, 20V, 24V, 36V, 110V-120V or 200V-250V. Moreover, various powers can be used according to application scenarios. After power-on, the silicon nitride ceramic material generates heat to start ignition. The silicon nitride ceramic material ignition rod is suitable for most existing barbecue grills, and is also suitable for carbon stoves, gas stoves and the like, and can also be suitable for hydrogen energy combustion batteries, gas air conditioner ignition, gas stoves, gas water heaters, gas ovens, gas dryers and the like. Various gas household appliances are ignited to replace the traditional pulse ignition mode.

[0034] The utility model discloses a silicon nitride ceramic material ignition rod, which comprises two connecting terminals connected with the lead wire respectively and an extension part connected between the two connecting terminals, the extension part has a twisted or curved shape, the two connecting terminals are located at one end of the silicon nitride ceramic material ignition rod, and the middle section of the extension part is located at the other end of the silicon nitride ceramic material ignition rod as a heating position. Compared with other ignition rods in the prior art, the silicon nitride ceramic material ignition rod has high strength, good durability, lower use cost and a quite wide application range.

[0035] In this specification, the utility model has been described with reference to its specific embodiments. However, it is obvious that various modifications and changes can still be made without departing from the spirit and scope of the utility model. Therefore, the specification and drawings should be considered as illustrative rather than restrictive.

Claims

1. A silicon nitride ceramic material igniter rod characterized by, The silicon nitride ceramic igniter rod (1) comprises two wire terminals (11) connected with the lead wires (3) respectively and an extended portion (12) connected between the two wire terminals (11), the extended portion (12) has a twisted or curved shape, the two wire terminals (11) are located at one end of the silicon nitride ceramic igniter rod (1), and the middle of the extended portion (12) is located at the other end of the silicon nitride ceramic igniter rod (1) as a heating position.

2. The silicon nitride ceramic material igniter rod of claim 1, wherein, The extended portion (12) comprises at least one reciprocating segment (13), each reciprocating segment (13) is connected in series between the two wire terminals (11) in a head-to-tail manner, and there is only one path between the two wire terminals (11) through all the reciprocating segments (13).

3. The silicon nitride ceramic material igniter rod of claim 2, wherein, There is a gap (14) between each reciprocating segment (13).

4. The silicon nitride ceramic igniter rod of claim 1, wherein, The extended portion (12) of the silicon nitride ceramic igniter rod (1) is located on a plane, and the whole silicon nitride ceramic igniter rod (1) is located in a flat plate layer with a certain height.

5. The silicon nitride ceramic igniter rod of claim 1, wherein, The extended portion (12) of the silicon nitride ceramic igniter rod is in a spiral shape, and the whole silicon nitride ceramic igniter rod (1) is a hollow cylinder.

6. The silicon nitride ceramic material igniter rod of claim 1, wherein, The extended portion (12) and the two wire terminals (11) are integrally formed.

7. The silicon nitride ceramic material igniter rod of any one of claims 1 to 6, wherein, It also comprises a ceramic insulating shell (2) and lead wires (3), the two lead wires (3) are welded to the two wire terminals (11) respectively and connected with an external power supply, the welding position is located in the ceramic insulating shell (2), and part of the extended portion (12) of the silicon nitride ceramic igniter rod (1) extends out of the ceramic insulating shell (2).

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