Silicon nitride high-temperature igniter

Abstract

The utility model discloses a silicon nitride high-temperature igniter, which relates to the technical field of igniters and comprises a silicon nitride igniter main body, a heat insulation mechanism is arranged on the outer side of the silicon nitride igniter main body, a take-up mechanism is arranged on the rear side of the heat insulation mechanism, and the silicon nitride igniter main body comprises an insulator mechanism. The front side of the insulator mechanism is provided with a silicon nitride heating element, and the rear end of the insulator mechanism is provided with two cables. The U-shaped heat insulation cover I, the quick release plate, the U-shaped heat insulation cover II, the extension plate, the butt joint clamping plate, the heat insulation baffle and the heat insulation layer are matched with one another, so that the outer wall of an insulator mechanism contained in the silicon nitride igniter main body can be subjected to heat insulation treatment by utilizing a box body formed by the U-shaped heat insulation cover I and the U-shaped heat insulation cover II; the influence of external high temperature on an insulator mechanism is avoided, the stability of the joint of the cable and the silicon nitride heating element is ensured, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of igniter technology, specifically to a silicon nitride high-temperature igniter. Background Technology

[0002] A silicon nitride high-temperature igniter is an ignition device that uses silicon nitride as an ignition head. It is primarily used for igniting gases in high-temperature environments. It converts electrical energy into heat energy through a heating element, rapidly raising the surface temperature of the silicon nitride. Specifically, when the circuit is connected, the heating element raises the surface temperature of the silicon nitride material to over 1000℃ within 2-10 seconds, reaching a maximum of 1400℃. This high-temperature surface ignites combustible gases. It is widely used in various scenarios requiring high-temperature ignition, such as household gas water heaters and automobiles. However, existing technologies have the following problems:

[0003] Because the insulator of existing silicon nitride high-temperature igniters cannot completely insulate against heat, the cable is mainly fixed inside the insulator by sealant. When used in a high-temperature environment for a long time, the cable inside the insulator is heated and easily damaged, which leads to a shortened service life. At the same time, the external cable of existing silicon nitride igniters is prone to bending, tangling and damage, and is not very aesthetically pleasing. Utility Model Content

[0004] This invention provides a silicon nitride high-temperature igniter to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A silicon nitride high-temperature igniter includes a silicon nitride igniter body, a heat insulation mechanism on the outer side of the silicon nitride igniter body, a wire take-up mechanism on the rear side of the heat insulation mechanism, an insulator mechanism in the silicon nitride igniter body, a silicon nitride heating element on the front side of the insulator mechanism, and two cables on the rear side of the insulator mechanism. The heat insulation mechanism includes a U-shaped heat insulation cover and a U-shaped heat insulation cover, which are respectively disposed on the upper and lower sides of the insulator mechanism. A heat insulation layer is fixedly installed between the opposite surfaces of the U-shaped heat insulation cover and the U-shaped heat insulation cover. Heat insulation baffles are fixedly installed on the rear sides of the opposite surfaces of the U-shaped heat insulation cover and the rear ends of the two cables pass through the rear sides of the two heat insulation baffles.

[0007] A further improvement of the present invention is that: quick-release plates are fixedly installed on both the left and right sides of the first U-shaped heat insulation cover, and both quick-release plates are provided with vertically penetrating docking grooves; extension plates are fixedly installed on both the left and right sides of the second U-shaped heat insulation cover, the width of the extension plates is smaller than that of the quick-release plates, and docking plates are fixedly installed on the top of both extension plates, and the two docking plates are respectively engaged with the two docking grooves.

[0008] A further improvement of this utility model is that silicone rubber rings are fixedly installed on the outer walls of both docking plates.

[0009] A further improvement of the present invention is that the cable take-up mechanism includes a U-shaped storage cover one and a U-shaped storage cover two. A sealing cover is fixedly installed on the rear side of the opposite face of the U-shaped storage cover one and the U-shaped storage cover two. Semi-circular cable inlet holes are opened on the left and right sides of the opposite face of the two sealing covers. The two cables pass through the left and right and upper and lower semi-circular cable inlet holes to the rear side of the sealing cover.

[0010] A further improvement of this utility model is that: L-shaped cable clamps are fixedly installed on both the left and right sides of the rear end of the inner wall of the U-shaped storage cover II, and the distance between the horizontal part of the L-shaped cable clamp and the sealing cover is less than the cross-sectional diameter of the cable.

[0011] A further improvement of this utility model is that: the insulator mechanism includes a U-shaped upper insulator cover and a U-shaped lower insulator cover; the heat insulation layer at the bottom of the first U-shaped heat insulation cover overlaps with the top of the upper U-shaped insulator cover; the heat insulation layer at the top of the second U-shaped heat insulation cover overlaps with the bottom of the lower U-shaped insulator cover; a retaining plate is fixedly installed at the bottom of each of the two vertical positions of the upper U-shaped insulator cover; a retaining groove is fixedly installed at the top of each of the two vertical positions of the lower U-shaped insulator cover; and the retaining plate engages with the retaining groove; and sealant is fixedly filled on the rear side of the opposite surfaces of the upper and lower U-shaped insulator covers.

[0012] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0013] 1. This utility model provides a silicon nitride high-temperature igniter. Through the cooperation of U-shaped heat insulation cover one, quick-release plate, U-shaped heat insulation cover two, extension plate, docking plate, heat insulation baffle, and heat insulation layer, the outer wall of the insulating mechanism included in the main body of the silicon nitride igniter can be heat-insulated by the box body composed of U-shaped heat insulation cover one and U-shaped heat insulation cover two, so as to avoid the influence of external high temperature on the insulating mechanism, ensure the stability of the connection between the cable and the silicon nitride heating element, and improve the service life.

[0014] 2. This utility model provides a silicon nitride high-temperature igniter. Through the cooperation of the cable winding mechanism, U-shaped storage cover one, U-shaped storage cover two, sealing cover, semi-circular cable inlet hole, and L-shaped cable clamp, the excess cable can be effectively stored after the silicon nitride high-temperature igniter is installed, preventing the cable from getting tangled and damaged, while also improving the aesthetics. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the silicon nitride igniter body and heat insulation mechanism of the present invention.

[0017] Figure 3 This is a disassembly diagram of the U-shaped heat insulation cover one and the U-shaped heat insulation cover two of the present invention.

[0018] Figure 4 This is a schematic diagram of the take-up mechanism of the present invention;

[0019] Figure 5 This is a schematic diagram of the insulator mechanism of the present invention.

[0020] In the diagram: 1. Silicon nitride igniter body; 11. Insulator mechanism; 111. U-shaped upper insulator cover; 112. U-shaped lower insulator cover; 113. Clamping plate; 114. Clamping slot; 115. Sealant; 12. Silicon nitride heating element; 13. Cable; 2. Heat insulation mechanism; 21. U-shaped heat insulation cover one; 211. Quick release plate; 212. Connecting slot; 22. U-shaped heat insulation cover two; 221. Extension plate; 222. Connecting clamping plate; 223. Silicone rubber ring; 23. Heat insulation baffle; 24. Heat insulation layer; 3. Cable winding mechanism; 31. U-shaped storage cover one; 32. U-shaped storage cover two; 33. Sealing cover; 34. Semi-circular cable inlet hole; 35. L-shaped cable clamping plate. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1 , Figure 2 , Figure 3As shown, this utility model provides a silicon nitride high-temperature igniter, including a silicon nitride igniter body 1. A heat insulation mechanism 2 is provided on the outer side of the silicon nitride igniter body 1, and a wire winding mechanism 3 is provided on the rear side of the heat insulation mechanism 2. The silicon nitride igniter body 1 includes an insulator mechanism 11. A silicon nitride heating element 12 is provided on the front side of the insulator mechanism 11, and two cables 13 are provided on the rear side of the insulator mechanism 11. The heat insulation mechanism 2 includes a U-shaped heat insulation cover 21 and a U-shaped heat insulation cover 22. The U-shaped heat insulation cover 21 and the U-shaped heat insulation cover 22 are respectively provided on the upper and lower sides of the insulator mechanism 11. A heat insulation layer 24 is fixedly installed between the opposite surfaces of the U-shaped heat insulation cover 21 and the U-shaped heat insulation cover 22. Heat insulation baffles are fixedly installed on the rear sides of the opposite surfaces of the U-shaped heat insulation cover 21 and the U-shaped heat insulation cover 22. 23. The rear ends of the two cables 13 pass through the rear sides of the two heat insulation baffles 23 respectively. Quick-release plates 211 are fixedly installed on both sides of the U-shaped heat insulation cover 1 21. Both quick-release plates 211 have vertically connected docking grooves 212. Extension plates 221 are fixedly installed on both sides of the U-shaped heat insulation cover 22. The width of the extension plates 221 is smaller than that of the quick-release plates 211. The top of both extension plates 221 is fixedly installed with docking clamps 222. The two docking clamps 222 are respectively engaged with the two docking grooves 212. Silicone rubber rings 223 are fixedly installed on the outer walls of both docking clamps 222. The silicone rubber rings 223 are made of silicone rubber. Silicone rubber is an excellent high-temperature elastic material with high high-temperature resistance and weather resistance. It can be used for a long time in the range of -60℃ to +230℃.

[0023] In use, the U-shaped heat insulation cover 1 21 and the U-shaped heat insulation cover 22 can be aligned with the docking plate 222 on the top of the extension plate 221 and inserted into the docking groove 212 of the quick-release plate 211. The U-shaped heat insulation cover 1 21 and the U-shaped heat insulation cover 222 are then pinched together. The silicone rubber ring 223 on the outer wall of the docking plate 222 makes the docking plate 222 more securely inserted into the docking groove 212, thus stably securing the U-shaped heat insulation cover 1 21 and the U-shaped heat insulation cover 222 to the outer wall of the insulator mechanism 11. The heat insulation baffle is then used to further secure them. 23 seals against the tail of the insulator mechanism 11. At the same time, the U-shaped storage cover 31 fixed to the rear top of the U-shaped heat insulation cover 21 and the U-shaped storage cover 32 fixed to the rear bottom of the U-shaped heat insulation cover 22 will also merge into a box. After the U-shaped heat insulation cover 21 and the U-shaped heat insulation cover 22 merge, the heat insulation layer 24 on the opposite side will play a heat insulation role. The heat insulation layer 24 is made of fiber material and has excellent high temperature resistance, which can prevent the external high temperature from affecting the insulator mechanism 11.

[0024] like Figure 4As shown, the cable take-up mechanism 3 includes a U-shaped storage cover 31 and a U-shaped storage cover 32. A sealing cover 33 is fixedly installed on the rear side of the opposite face of the U-shaped storage cover 31 and the U-shaped storage cover 32. Semi-circular cable inlet holes 34 are opened on the left and right sides of the opposite face of the two sealing covers 33. The two cables 13 pass through the two semi-circular cable inlet holes 34 to the rear side of the sealing cover 33. An L-shaped cable clamp 35 is fixedly installed on the left and right sides of the rear end of the sealing cover 33 on the inner wall of the U-shaped storage cover 32. The distance between the horizontal part of the L-shaped cable clamp 35 and the sealing cover 33 is less than the cross-sectional diameter of the cable 13.

[0025] After the silicon nitride igniter body 1 is fully installed, the excess cable 13 can be pushed forward and passed through the circular hole formed by the semi-circular cable inlet holes 34 on the opposite sides of the two sealing covers 33. This allows the cable 13 to be inserted into the box formed by the U-shaped storage cover 31 and the U-shaped storage cover 32 until the cable 13 is kept horizontal and there is no long dragging line. Then, the part of the cable 13 near the sealing cover 33 can be fixed in the L-shaped cable clamp plate 35 by the elasticity of its outer sheath. This prevents the cable 13 from being pulled out at will, ensuring the cable 13 is stored effectively and improving the stability of the stored cable.

[0026] like Figure 5 As shown, the insulator mechanism 11 includes a U-shaped insulator upper cover 111 and a U-shaped insulator lower cover 112. The heat insulation layer 24 at the bottom of the U-shaped heat insulation cover 111 overlaps with the top of the U-shaped insulator upper cover 111. The heat insulation layer 24 at the top of the U-shaped heat insulation cover 22 overlaps with the bottom of the U-shaped insulator lower cover 112. A retaining plate 113 is fixedly installed at the bottom of the two vertical positions of the U-shaped insulator upper cover 111. A retaining groove 114 is fixedly installed at the top of the two vertical positions of the U-shaped insulator lower cover 112, and the retaining plate 113 is engaged with the retaining groove 114. The rear side of the opposite surfaces of the U-shaped insulator upper cover 111 and the U-shaped insulator lower cover 112 is fixedly filled with sealant 115.

[0027] The insulator mechanism 11 consists of a U-shaped upper insulator cover 111 and a U-shaped lower insulator cover 112. The combined U-shaped upper insulator cover 111 and U-shaped lower insulator cover 112 are bonded together with sealant 115 and engaged with a retaining plate 113 into a retaining groove 114. This improves the sealing performance between the U-shaped upper insulator cover 111 and U-shaped lower insulator cover 112. At the same time, the filling of sealant 115 can also effectively seal the edges of the cable 13, improving the sealing performance.

[0028] The working principle of this silicon nitride high-temperature igniter will be explained in detail below.

[0029] like Figure 1-5As shown, in use, the U-shaped heat insulation cover 1 21 and the U-shaped heat insulation cover 22 can be aligned with the docking plate 222 on the top of the extension plate 221 and inserted into the docking groove 212 of the quick-release plate 211. The U-shaped heat insulation cover 1 21 and the U-shaped heat insulation cover 22 are then pinched together. The silicone rubber ring 223 on the outer wall of the docking plate 222 makes the docking plate 222 more securely inserted into the docking groove 212, thus stably securing the U-shaped heat insulation cover 1 21 and the U-shaped heat insulation cover 222 to the outer wall of the insulator mechanism 11. The heat insulation baffle 23 seals against the tail of the insulator mechanism 11. Simultaneously, the U-shaped storage cover 31 fixed to the top rear side of the U-shaped heat insulation cover 21 and the U-shaped storage cover 32 fixed to the bottom rear side of the U-shaped heat insulation cover 22 also merge to form a box. After the U-shaped heat insulation cover 21 and U-shaped heat insulation cover 22 merge, the heat insulation layer 24 on their opposite sides provides heat insulation. The heat insulation layer 24 is made of fiber material and has excellent high-temperature resistance, preventing external high temperatures from affecting the insulator mechanism 11. This will not cause any impact. Meanwhile, after the silicon nitride igniter body 1 is fully installed, any excess cable 13 can be pushed forward through the circular hole formed by the semi-circular inlet holes 34 on the opposite sides of the two sealing covers 33. This allows the cable 13 to be inserted into the box formed by the U-shaped storage cover 31 and the U-shaped storage cover 32, until the cable 13 is kept horizontal and no long trailing line appears. Then, the portion of the cable 13 closest to the sealing cover 33 can be secured by its own elastic sheath by being inserted into the L-shaped cable clip 35, avoiding [further issues]. The cable-free 13 can be pulled out at will. The insulator mechanism 11 consists of a U-shaped upper insulator cover 111 and a U-shaped lower insulator cover 112. The combined U-shaped upper insulator cover 111 and U-shaped lower insulator cover 112 are bonded together with sealant 115. The locking plate 113 is inserted into the locking groove 114, which can improve the sealing between the U-shaped upper insulator cover 111 and U-shaped lower insulator cover 112. At the same time, the filling of sealant 115 can also effectively seal the edges of the cable 13, improving the sealing performance.

[0030] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A silicon nitride high-temperature igniter, comprising a silicon nitride igniter body (1), characterized in that: A heat insulation mechanism (2) is provided on the outer side of the silicon nitride igniter body (1), and a wire winding mechanism (3) is provided on the rear side of the heat insulation mechanism (2). The silicon nitride igniter body (1) includes an insulator mechanism (11), a silicon nitride heating element (12) is provided on the front side of the insulator mechanism (11), and two cables (13) are provided on the rear side of the insulator mechanism (11). The heat insulation mechanism (2) includes a U-shaped heat insulation cover one (21) and a U-shaped heat insulation cover two (22). The U-shaped heat insulation cover one (21) and the U-shaped heat insulation cover two (22) are respectively set on the upper and lower sides of the insulator mechanism (11). A heat insulation layer (24) is fixedly installed between the opposite surfaces of the U-shaped heat insulation cover one (21) and the U-shaped heat insulation cover two (22). Heat insulation baffles (23) are fixedly installed on the rear side of the opposite surfaces of the U-shaped heat insulation cover one (21) and the U-shaped heat insulation cover two (22). The rear ends of the two cables (13) respectively pass through the rear side of the two heat insulation baffles (23).

2. The silicon nitride high-temperature igniter according to claim 1, characterized in that: The U-shaped heat insulation cover one (21) is fixedly installed with quick-release plates (211) on both the left and right sides. Both quick-release plates (211) have through-holes (212) on both the upper and lower sides. The U-shaped heat insulation cover two (22) is fixedly installed with extension plates (221) on both the left and right sides. The width of the extension plates (221) is smaller than that of the quick-release plates (211). Both extension plates (221) are fixedly installed with docking plates (222) on the top. The two docking plates (222) are respectively engaged with the two docking slots (212).

3. A silicon nitride high-temperature igniter according to claim 2, characterized in that: Silicone rubber rings (223) are fixedly installed on the outer walls of both docking plates (222).

4. A silicon nitride high-temperature igniter according to claim 1, characterized in that: The cable take-up mechanism (3) includes a U-shaped storage cover one (31) and a U-shaped storage cover two (32). A sealing cover (33) is fixedly installed on the rear side of the opposite face of the U-shaped storage cover one (31) and the U-shaped storage cover two (32). Semi-circular cable inlet holes (34) are opened on the left and right sides of the opposite face of the two sealing covers (33). The two cables (13) pass through the two semi-circular cable inlet holes (34) to the rear side of the sealing cover (33).

5. A silicon nitride high-temperature igniter according to claim 4, characterized in that: The inner wall of the U-shaped storage cover (32) has an L-shaped cable clamp (35) fixedly installed on both the left and right sides of the rear end of the sealing cover (33). The distance between the L-shaped cable clamp (35) and the sealing cover (33) at the horizontal position is less than the cross-sectional diameter of the cable (13).

6. A silicon nitride high-temperature igniter according to claim 1, characterized in that: The insulator mechanism (11) includes a U-shaped insulator upper cover (111) and a U-shaped insulator lower cover (112). The heat insulation layer (24) at the bottom of the first U-shaped heat insulation cover (21) overlaps with the top of the upper U-shaped insulator (111). The heat insulation layer (24) at the top of the second U-shaped heat insulation cover (22) overlaps with the bottom of the lower U-shaped insulator (112). A retaining plate (113) is fixedly installed at the bottom of the two vertical parts of the upper U-shaped insulator (111). A retaining groove (114) is fixedly installed at the top of the two vertical parts of the lower U-shaped insulator (112). The retaining plate (113) is engaged with the retaining groove (114). The rear side of the opposite surfaces of the upper U-shaped insulator (111) and the lower U-shaped insulator (112) is fixedly filled with sealant (115).

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