CN220321361U - Silicon carbide hot surface igniter - Google Patents
Silicon carbide hot surface igniter Download PDFInfo
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- CN220321361U CN220321361U CN202321383987.0U CN202321383987U CN220321361U CN 220321361 U CN220321361 U CN 220321361U CN 202321383987 U CN202321383987 U CN 202321383987U CN 220321361 U CN220321361 U CN 220321361U
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- igniter body
- igniter
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- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 19
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000000853 adhesive Substances 0.000 abstract description 17
- 230000001070 adhesive effect Effects 0.000 abstract description 17
- 229920001353 Dextrin Polymers 0.000 abstract description 13
- 239000004375 Dextrin Substances 0.000 abstract description 13
- 235000019425 dextrin Nutrition 0.000 abstract description 13
- 238000001035 drying Methods 0.000 abstract description 8
- 239000006229 carbon black Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000002156 mixing Methods 0.000 abstract description 5
- 238000005245 sintering Methods 0.000 abstract description 5
- 238000007580 dry-mixing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000008676 import Effects 0.000 abstract description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 235000019580 granularity Nutrition 0.000 description 2
- 239000011361 granulated particle Substances 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009766 low-temperature sintering Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000011856 silicon-based particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000007750 plasma spraying Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model discloses a silicon carbide hot surface igniter, which comprises an igniter body, wherein the igniter body is of a flat plate structure or a cylindrical structure, the igniter body of the flat plate structure is arranged from one end to the other end to form a first section, a second section and a third section at one time, the width of the first section is larger than that of the second section, and the width of the second section is larger than that of the third section; the middle of the igniter body of the cylindrical structure is provided with a through hole with two ends communicated, one end of the igniter body is provided with a linear open slot towards the other end, and the inner end of the linear open slot extends to the other end of the igniter body to form a thread slot; the formula consists of high-temperature silicon carbide, carbon black, sugar, yellow dextrin and BD-5 adhesive; the method comprises the steps of dry mixing, wet mixing, forming, drying, grooving, threading, sintering and detecting; the beneficial effects are that: the utility model has novel structure, various performance indexes reach the level of imported like products abroad, replace import, and reduce the production cost of manufacturers such as gas furnaces, water heaters and the like.
Description
Technical Field
The utility model relates to a silicon carbide hot surface igniter, in particular to a silicon carbide hot surface igniter.
Background
The hot surface igniter with screw thread structure or flat plate structure is used in sealed gas oven, gas drier and boiler equipment, and has high oxidation resistance at high temperature, high safety performance, high explosion and explosion caused by ignition after igniting common igniter, and the technological process is reaction sintering and re-crystallization to obtain high density low resistivity product with thermal resistance in 28-33 ohm and cold resistance in 69-155 ohm.
The silicon carbide has at least 70 crystal forms due to the sensitivity of the heating element to sintering temperature, and the production process is particularly complex. Stable chemical property, high heat conductivity, small thermal expansion coefficient, good wear resistance and high heat conductivity. Can bear the temperature change of extreme cold and hot without cracking, and the silicon carbide igniter can directly ignite the main burner without using an indicator lamp. The current passes through the igniter and emits red light, which is hot. A threaded, flat-plate hot surface igniter operating under normal conditions will last up to 10 tens of thousands of times. The products are continuously used for more than 65 years in European and American markets, but are imported in China, so that the use cost of Chinese users is increased. The utility model can make up the dependence of Chinese users on foreign importation.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a silicon carbide hot surface igniter which is suitable for equipment such as a gas boiler, a clothes dryer, an oven and the like aiming at the defects of the prior art.
In order to achieve the above object, the present utility model adopts the following measures:
the utility model provides a carborundum hot surface igniter, including the igniter body, the igniter body be a flat structure, or cylinder structure, the igniter body of flat structure is once set for first section, second section and third section from one end to other end, the width of first section is greater than the width of second section, the width of second section is greater than the width of third section, first groove has been seted up to the intermediate position of first section, the degree of depth of first groove is greater than the length of first section, be less than the length of first section plus the second section, the intermediate position of third section has been seted up the second groove, the degree of depth of second groove is less than the length of third section, third groove and fourth groove have been seted up respectively to the tip of two blocks of boards about dividing into by first section of first groove, the degree of depth of third groove and fourth groove is less than half of first section length, fifth groove and sixth groove have been seted up respectively to third section one end to the bottom two corner of first groove, the degree of depth of fifth groove and sixth groove is less than the length of first section; the middle of the igniter body of the cylindrical structure is provided with a through hole with two through ends, one end of the igniter body is provided with a linear open slot towards the other end, the depth of the linear open slot is smaller than half of the length of the igniter body, the inner end of the linear open slot extends to the other end of the igniter body and is provided with a thread slot, the thread slot and the linear open slot are communicated with the through hole, and the thread slot does not penetrate through to the end part of the other end of the igniter body;
the first section and the second section are provided with a chamfer curved surface, the second section and the third section are provided with a chamfer curved surface, and two sides of the tail end of the third section are provided with chamfer curved surfaces; the length of the igniter body of the flat plate structure is 76 mm, the thickness of the igniter body of the flat plate structure is 3.2 mm, the length of the first section is 25 mm, the width of the first section is 24 mm, the width of the second section is 17 mm, the length of the third section is 40.2 mm, the width of the third section is 12.6 mm, the depth of the first groove is 30 mm, the width of the first groove is 7.8 mm, the width of the second groove is 1 mm, the widths of the third groove and the fourth groove are 2 mm, the depth of the third groove and the fourth groove are 6.1 mm, and the minimum distance between the third groove and the fourth groove is 13.9 mm; the length of the igniter body of the cylindrical structure is 60 mm, the radius of the cross section is 5 mm, and the radius of the through hole is 3.1 mm.
The formula for manufacturing the igniter comprises high-temperature silicon carbide, carbon black, sugar, yellow dextrin and BD-5 adhesive, wherein the proportions of the components are as follows: 85-95% of high-temperature silicon carbide, 1.5-3.5% of carbon black, 3.5% of sugar, 3-6% of yellow dextrin and the balance of BD-5 adhesive, wherein the ratio of the sugar to the BD-5 adhesive is as follows: 35% -45%;
the sugar, the yellow dextrin and the BD-5 adhesive are melted into hydrosol, the sugar, the yellow dextrin and the BD-5 adhesive are organic polymers, the yellow dextrin is a water-based adhesive, and the BD-5PVA adhesive is bonded in a water-based manner.
A method of manufacturing an igniter as described above,
step 1: dry mixing: raw materials with different granularities are prepared by the following steps: adding high-temperature silicon carbide, carbon black, yellow dextrin and boron nitride into a stirrer, and stirring for four hours;
step 2: wet mixing: mixing the dry-mixed materials, adding hydrosol formed by dissolving 35% -45% of sugar and BD-5 adhesive, stirring for 60-80 minutes, then placing into a ball mill for ball milling for 8-12 hours, then pumping into a granulator, and processing the raw materials into particles in a spray granulation mode;
step 3: and (3) forming: placing the granulated particles into a 50-ton press hopper, performing compression molding by using a mold according to a compression ratio of 1:2.2, and then demolding;
step 4: and (3) drying: placing the pressed blank into a drying oven, and drying for 10-20 hours at 110-155 ℃;
step 5: grooving or threading to achieve the required electrode performance according to the depth of the grooving and the length of the threading;
step 6: sintering: placing the blank into a carbon box, adding 35% -50% of 40-mesh high-temperature silicon particles into the carbon box according to the specific gravity of the blank, then performing low-temperature sintering at 1550-1650 ℃ for 5-6 hours, then adding inert protective gas, heating to 2180-2530 ℃, and cooling to obtain a finished product;
step 7: and (3) detection: spraying aluminum or nickel on the tail end of the finished product, then placing the finished product into a power meter for testing, checking the thermal state resistance, the power, the current and the time, stabilizing the current to 3.0-3.6A after the voltage is 115V and the temperature reaches 980 ℃ for 17 seconds and 10-20 seconds, and ensuring that the electrical performance of the finished product is not attenuated after the finished product is circulated for 20 times.
The utility model has the beneficial effects that: the utility model has novel structure, various performance indexes reach the level of imported like products abroad, replace import, and reduce the production cost of manufacturers such as gas furnaces, water heaters and the like.
Drawings
Fig. 1 is a schematic view of a flat plate structure of the present utility model.
Fig. 2 is a schematic view of a cylinder structure according to the present utility model.
Detailed Description
The utility model provides a carborundum hot surface igniter, including igniter body 1, igniter body 1 be a flat plate structure, or cylinder structure, igniter body 1 of flat plate structure is once set into first section 101 from one end to other end, second section 102 and third section 103, the width of first section 101 is greater than the width of second section 102, the width of second section 102 is greater than the width of third section 103, first groove 104 has been seted up to the intermediate position of first section 101, the degree of depth of first groove 104 is greater than the length of first section 101, be less than the length of first section 101 plus the length of second section 102, the intermediate position of third section 103 has been seted up second groove 105, the degree of depth of second groove 105 is less than the length of third section 103, the tip of two blocks of left and right sides boards that first section 101 cut apart has been seted up third groove 106 and fourth groove 107 respectively, the degree of depth of third groove 106 and fourth groove 107 is less than half of first section 101 length, the bottom both corners 103 of first groove 104 are equipped with fifth groove 108 and sixth groove 108 and fifth groove 109 to the end of third section 101 respectively, the degree of depth of fifth groove 109 is less than fifth groove 109; the middle of the igniter body 1 with a cylindrical structure is provided with a through hole 1-1 with two through ends, one end of the igniter body 1 is provided with a linear open slot 1-2 towards the other end, the depth of the linear open slot 1-2 is smaller than half of the length of the igniter body 1, the inner end of the linear open slot 1-2 extends out of a thread slot 1-3 towards the other end of the igniter body 1, the thread slot 1-3 and the linear open slot 1-2 are communicated with the through hole 1-1, and the thread slot 1-3 does not penetrate through to the end part of the other end of the igniter body 1.
A chamfer curved surface is arranged between the first section 101 and the second section 102, a chamfer curved surface is arranged between the second section 102 and the third section 103, and two sides of the tail end of the third section 103 are chamfer curved surfaces; the length of the igniter body 1 of the flat plate structure is 76 mm, the thickness is 3.2 mm, the length of the first section 101 is 25 mm, the width is 24 mm, the width of the second section 102 is 17 mm, the length of the third section 103 is 40.2 mm, the width is 12.6 mm, the depth of the first groove 104 is 30 mm, the width is 7.8 mm, the width of the second groove 105 is 1 mm, the width of the third groove 106 and the fourth groove 107 is 2 mm, the depth is 6.1 mm, and the minimum distance between the third groove 106 and the fourth groove 107 is 13.9 mm; the igniter body 1 of the cylindrical structure has a length of 60 mm, a radius of the cross section of 5 mm, and a radius of the through hole 1-1 of 3.1 mm.
The igniter body 1 is an integrally formed integral structure. Depending on the device, the igniter body 1 may be selected to have a flat plate structure or a cylindrical structure.
The formula for manufacturing the igniter comprises high-temperature silicon carbide, carbon black, sugar, yellow dextrin and BD-5 adhesive, wherein the proportions of the components are as follows: 85-95% of high-temperature silicon carbide, 1.5-3.5% of carbon black, 3.5% of sugar, 3-6% of yellow dextrin and the balance of BD-5 adhesive, wherein the ratio of the sugar to the BD-5 adhesive is as follows: 35% -45%.
The sugar, the yellow dextrin and the BD-5 adhesive are melted into hydrosol, the sugar, the yellow dextrin and the BD-5 adhesive are organic polymers, the yellow dextrin is a water-based adhesive, and the BD-5PVA adhesive is bonded in a water-based manner.
A method of manufacturing an igniter as described above,
step 1: dry mixing: raw materials with different granularities are prepared by the following steps: adding high-temperature silicon carbide, carbon black, yellow dextrin and boron nitride into a stirrer, and stirring for four hours;
step 2: wet mixing: mixing the dry-mixed materials, adding hydrosol formed by dissolving 35% -45% of sugar and BD-5 adhesive, stirring for 60-80 minutes, then placing into a ball mill for ball milling for 8-12 hours, then pumping into a granulator, and processing the raw materials into particles in a spray granulation mode;
step 3: and (3) forming: placing the granulated particles into a 50-ton press hopper, performing compression molding by using a mold according to a compression ratio of 1:2.2, and then demolding;
step 4: and (3) drying: placing the pressed blank into a drying oven, and drying for 10-20 hours at 110-155 ℃;
step 5: grooving or threading to achieve the required electrode performance according to the depth of the grooving and the length of the threading;
step 6: sintering: placing the blank into a carbon box, adding 35% -50% of 40-mesh high-temperature silicon particles into the carbon box according to the specific gravity of the blank, then performing low-temperature sintering at 1550-1650 ℃ for 5-6 hours, then adding inert protective gas, heating to 2180-2530 ℃, and cooling to obtain a finished product;
step 7: and (3) detection: spraying aluminum or nickel on the tail end of the finished product, then placing the finished product into a power meter for testing, checking the thermal state resistance, the power, the current and the time, stabilizing the current to 3.0-3.6A after the voltage is 115V and the temperature reaches 980 ℃ for 17 seconds and 10-20 seconds, and ensuring that the electrical performance of the finished product is not attenuated after the finished product is circulated for 20 times.
The assembly process comprises the following steps:
spraying, aluminum spraying or nickel spraying, electrical appliance performance screening, aluminum welding or crimping, ceramic filling, shaping baking oven, 20 times of circulating electrifying and solidifying, 100% electrical performance detection, 100% crack detection and packaging to obtain qualified finished products.
The device comprises: plasma spraying machine, aluminum welding, wire crimping machine, electrical property screening equipment, shaping filling mould, drying and baking, aging test bench, AQL finished product test, crack detection.
Claims (2)
1. A silicon carbide hot surface igniter comprising an igniter body (1), characterized in that: the igniter comprises an igniter body (1) and is characterized in that the igniter body (1) is of a flat plate structure or a cylindrical structure, the igniter body (1) of the flat plate structure is arranged from one end to the other end at a time to form a first section (101), a second section (102) and a third section (103), the width of the first section (101) is larger than that of the second section (102), the width of the second section (102) is larger than that of the third section (103), a first groove (104) is formed in the middle position of the first section (101), the depth of the first groove (104) is larger than that of the first section (101), the length of the first section (101) and the length of the second section (102) are smaller than that of the third section (103), the depth of the second groove (105) is smaller than that of the third section (103), a third groove (106) and a fourth groove (107) are formed in the end parts of left and right plates separated by the first groove (104), the depth of the third groove (106) and the fourth groove (103) are respectively smaller than that of the first groove (101) and the fifth groove (108) are formed in the middle position of the third section (103), and the depth of the third groove (103) is smaller than that of the first groove (101) is equal to the sixth groove (109); a through hole (1-1) with two through ends is formed in the middle of an igniter body (1) of a cylindrical structure, a linear open groove (1-2) is formed in one end of the igniter body (1) towards the other end, the depth of the linear open groove (1-2) is smaller than half of the length of the igniter body (1), a thread groove (1-3) extends from the inner end of the linear open groove (1-2) towards the other end of the igniter body (1), the thread groove (1-3) and the linear open groove (1-2) are communicated with the through hole (1-1), and the thread groove (1-3) does not penetrate through to the end part of the other end of the igniter body (1).
2. A silicon carbide hot surface igniter as defined in claim 1 wherein: a chamfer curved surface is arranged between the first section (101) and the second section (102), a chamfer curved surface is arranged between the second section (102) and the third section (103), and two sides of the tail end of the third section (103) are chamfer curved surfaces; the igniter body (1) of the flat plate structure has a length of 76 mm and a thickness of 3.2 mm, the first section (101) has a length of 25 mm and a width of 24 mm, the second section (102) has a width of 17 mm, the third section (103) has a length of 40.2 mm and a width of 12.6 mm, the first groove (104) has a depth of 30 mm and a width of 7.8 mm, the second groove (105) has a width of 1 mm, the third groove (106) and the fourth groove (107) have a width of 2 mm and a depth of 6.1 mm, and the minimum distance between the third groove (106) and the fourth groove (107) is 13.9 mm; the length of the igniter body (1) of the cylindrical structure is 60 mm, the radius of the cross section is 5 mm, and the radius of the through hole (1-1) is 3.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321383987.0U CN220321361U (en) | 2023-06-01 | 2023-06-01 | Silicon carbide hot surface igniter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321383987.0U CN220321361U (en) | 2023-06-01 | 2023-06-01 | Silicon carbide hot surface igniter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220321361U true CN220321361U (en) | 2024-01-09 |
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ID=89413065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321383987.0U Active CN220321361U (en) | 2023-06-01 | 2023-06-01 | Silicon carbide hot surface igniter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220321361U (en) |
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2023
- 2023-06-01 CN CN202321383987.0U patent/CN220321361U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240312 Address after: 315000 chehedu village, Shiqi street, Haishu District, Ningbo City, Zhejiang Province Patentee after: NINGBO HENGHUI SENSING TECHNOLOGY Co.,Ltd. Country or region after: China Address before: No. 95, Lane 126, Changshou South Road, Zhonghe Street, Guozhou District, Ningbo City, Zhejiang Province, 315000 Patentee before: Ding Jinzhi Country or region before: China Patentee before: Zhang Houdong |
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| TR01 | Transfer of patent right |