WO2015182535A1 - セラミックヒータおよびそれを備える点火装置 - Google Patents
セラミックヒータおよびそれを備える点火装置 Download PDFInfo
- Publication number
- WO2015182535A1 WO2015182535A1 PCT/JP2015/064851 JP2015064851W WO2015182535A1 WO 2015182535 A1 WO2015182535 A1 WO 2015182535A1 JP 2015064851 W JP2015064851 W JP 2015064851W WO 2015182535 A1 WO2015182535 A1 WO 2015182535A1
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- ceramic
- heating resistor
- lead
- ceramic body
- ceramic heater
- Prior art date
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
- H05B3/42—Heating elements having the shape of rods or tubes non-flexible
- H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
- H05B3/283—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material the insulating material being an inorganic material, e.g. ceramic
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/027—Heaters specially adapted for glow plug igniters
Definitions
- the present invention relates to a ceramic heater and an ignition device including the ceramic heater.
- Ceramic heaters are known as heaters used for gas ranges, in-vehicle heating devices, petroleum fan heaters, glow plugs for automobile engines, or fuel preheating.
- Examples of the ceramic heater include a ceramic heater disclosed in Japanese Patent Laid-Open No. 2000-156275 (hereinafter referred to as Patent Document 1).
- the ceramic heater disclosed in Patent Document 1 includes a ceramic structure, a heating resistor embedded in the ceramic structure, and a feeder line connected to the heating resistor and drawn to the surface of the ceramic structure. I have.
- the ceramic heater includes a ceramic body, a strip-shaped heating resistor embedded in the ceramic body, and a strip-shaped lead embedded in the ceramic body and connected to an end portion of the heating resistor. Has a first portion that covers the end of the heating resistor at the connection portion with the heating resistor, and a second portion that protrudes on both sides of the end, compared to the thickness of the first portion. Thus, the thickness of the second portion is reduced.
- the ignition device includes the ceramic heater and a flow path for flowing gaseous fuel to the ceramic body of the ceramic heater.
- FIG. 2 is a cross-sectional view of the ceramic heater shown in FIG. 1 cut along line AA ′. It is an enlarged view which shows a resistor and a lead among the ceramic heaters shown in FIG. It is a perspective view which shows the ignition device using the ceramic heater shown in FIG.
- the ceramic heater 10 includes a ceramic body 1, a heating resistor 2 provided in the ceramic body 1, and leads provided in the ceramic body 1 and connected to the heating resistor 2. 3 is provided.
- a ceramic heater 10 can be used, for example, for a pre-heating of a glow plug or fuel of an automobile engine, or for ignition of a gas range.
- the ceramic body 1 is a member in which a lead 3 and a heating resistor 2 are embedded. By providing the lead 3 and the heating resistor 2 inside the ceramic body 1, the durability of the lead 3 and the heating resistor 2 can be improved.
- the ceramic body 1 is, for example, a rod-shaped or plate-shaped member (which can be said to be a columnar shape together).
- the ceramic body 1 is formed by laminating a plurality of ceramic layers 11.
- a ceramic heater 10 in which the ceramic body 1 is formed of a laminate of a plurality of ceramic layers 11 will be described, but the present invention is not limited to this. That is, the ceramic body 1 may be integrally formed. Examples of a method for integrally forming the ceramic body 1 include injection molding.
- the ceramic body 1 is made of ceramics having electrical insulation properties such as oxide ceramics, nitride ceramics or carbide ceramics. Specifically, the ceramic body 1 is made of alumina ceramic, silicon nitride ceramic, aluminum nitride ceramic, silicon carbide ceramic, or the like.
- the ceramic body 1 made of silicon nitride ceramic can be obtained by the following method. Specifically, for example, 5 to 15% by mass of a rare earth element oxide such as Y 2 O 3 , Yb 2 O 3 or Er 2 O 3 as a sintering aid with respect to silicon nitride as a main component; 5 amount such that the amount of SiO 2 is 1.5 to 5 wt% contained Al 2 O 3 and sintered to 5% by weight is mixed with SiO 2 which is adjusted.
- the ceramic body 1 made of silicon nitride ceramics can be obtained by forming into a predetermined shape and firing at a temperature of 1650 to 1780 ° C. For the firing, for example, a hot press method can be used.
- the length of the ceramic body 1 is set to 20 to 100 mm, for example.
- the cross section of the ceramic body 1 is set to a square having a thickness of 1 to 6 mm and a width of 2 to 40 mm, for example.
- the heating resistor 2 is a belt-like member that generates heat when a voltage is applied.
- the heating resistor 2 is embedded between two adjacent ceramic layers 11 of the ceramic body 1.
- a voltage is applied to the heating resistor 2
- a current flows and the heating resistor 2 generates heat.
- the heat generated by this heat generation is transmitted through the inside of the ceramic body 1, and the surface of the ceramic body 1 becomes high temperature.
- the ceramic heater 10 functions as heat is transferred from the surface of the ceramic body 1 to the object to be heated. Examples of the object to be heated from which heat is transferred from the surface of the ceramic body 1 include light oil supplied to a fuel injection device of an automobile diesel engine.
- the heating resistor 2 is provided on the tip side of the ceramic body 1.
- the heating resistor 2 has a longitudinal cross-sectional shape (a surface parallel to the length direction of the heating resistor 2), for example, a folded shape.
- the heating resistor 2 has two parallel straight portions 21 and a connecting portion 22 whose outer periphery and inner periphery are substantially semicircular or semi-elliptical and that folds and connects the two straight portions 21. is doing.
- the heating resistor 2 is folded back near the tip of the ceramic body 1.
- the length from the tip of the heating resistor 2 (the most distal portion of the connecting portion 22) to the rear end of the heating resistor 2 (the rear end of the straight portion 21) is, for example, in the length direction of the heating resistor 2 It is set to 2 to 15 mm.
- the heating resistor 2 is mainly composed of a carbide such as tungsten (W), molybdenum (Mo), or titanium (Ti), nitride, silicide, or the like.
- a carbide such as tungsten (W), molybdenum (Mo), or titanium (Ti), nitride, silicide, or the like.
- the ceramic body 1 is made of silicon nitride ceramic, it is preferable that the main component of the heating resistor 2 is made of tungsten carbide. Thereby, the thermal expansion coefficient of the ceramic body 1 and the thermal expansion coefficient of the heating resistor 2 can be brought close to each other.
- the lead 3 is a band-shaped member embedded in the ceramic body 1 and having one end pulled out to the side surface of the ceramic body 1.
- the lead 3 is located between two adjacent ceramic layers 11.
- the lead 3 is electrically connected to the heating resistor 2.
- the lead 3 is used to electrically connect the heating resistor 2 and an external power source.
- Two leads 3 are provided along the length direction of the ceramic body 1 corresponding to each of the two linear portions 21 of the heating resistor 2, and are bent at the rear end side of the ceramic body 1 to be ceramic. It is pulled out to the side of the body 1.
- the lead 3 is bent at 90 ° on the rear end side of the ceramic body 1 and pulled out to the side surface of the ceramic body 1.
- the lead 3 is made of a metal material having excellent heat resistance such as W or Mo. In particular, it is preferable to use the same tungsten carbide as the heating resistor 2 from the viewpoint of the thermal expansion coefficient.
- the lead 3 has a width of 1 to 20 mm, a length of the portion along the length direction of the heating resistor 2 is 10 to 80 mm, and is drawn out to the side surface of the ceramic body 1.
- the length of the portion extending in the direction perpendicular to the direction is set to 2 to 30 mm, and the thickness is set to about 10 to 50 ⁇ m.
- FIG. 2 is a cross-sectional view of the ceramic heater 10 shown in FIG. 1 cut along the line AA ′ passing through the connecting portion between the heating resistor 2 and the lead 3.
- FIG. 2 shows a cross section perpendicular to the main surface of the heating resistor 2.
- a part of the boundary between the plurality of ceramic layers 11 is indicated by a dotted line.
- FIG. 3 is an enlarged view of the resistor 2 and the lead 3 in FIG.
- the lead 3 has a first portion 31 that covers the end portion of the heating resistor 2, and a second portion 32 that protrudes on both sides of the end portion.
- the boundary between the lead 3 and the heating resistor 2 becomes non-planar. It is possible to make it difficult for a crack to progress at the boundary with the body 2.
- the end of the lead 3 can be sufficiently far away from the heating resistor 2, so that when a crack occurs at the end of the second portion 32, a crack is generated between the lead 3 and the heating resistor 2.
- the protruding length W of the second portion 32 may be twice or more the thickness T of the lead 3 at the end of the first portion 31.
- the second portion 32 can be thinly spread in the ceramic body 1. As a result, the thermal stress generated in the ceramic body 1 when the second portion 32 is thermally expanded can be reduced.
- the thickness of the protruding portion (second portion 32) is smaller than the thickness of the portion of the lead 3 that overlaps the heating resistor 2 (first portion 31).
- the thickness of the lead 3 can be set such that the thickness of the first portion 31 is 5 to 50 ⁇ m and the thickness of the second portion 32 is 0.5 to 10 ⁇ m.
- the comparison between the thickness of the first portion 31 and the thickness of the second portion 32 can be performed, for example, by comparing the average thickness of the first portion 31 and the average thickness of the second portion 32.
- the average thickness of the first portion 31 and the second portion 32 can be determined by the following method, for example. Specifically, three virtual lines that divide the first part 31 and the second part 32 into four equal parts in the width direction are drawn on the first part 31 and the second part 32. And in the 1st part 31 and the 2nd part 32, each average value of the thickness of the position where these three virtual lines were drawn is calculated
- the respective average values can be regarded as the average thickness of the first portion 31 and the average thickness of the second portion 32.
- the thickness of the second portion 32 is thinner toward the outside in the connection portion between the lead 3 and the heating resistor 2.
- the thermal stress is likely to be concentrated particularly in the vicinity of the tip of the second portion 32.
- a crack can be generated in the lead 3 at a position far from the heating resistor 2 and the first portion 31. Therefore, the possibility that the connection reliability between the lead 3 and the heating resistor 2 is lowered can be reduced.
- the heating resistor 2 and the lead 3 may be provided between two adjacent ceramic layers 11. Thereby, the crack which arises in the ceramic body 1 can be reduced. In the ceramic body 1, stress tends to concentrate particularly between the ceramic layers 11.
- the heating resistor 2 and the lead 3 that can concentrate stress on the second portion 32 between the layers of the ceramic layer 11 as described above, the stress generated between the layers of the ceramic layer 11 can be reduced. It can be absorbed by the second portion 32. Therefore, it is possible to reduce the occurrence of cracks in the ceramic body 1 from the interlayer of the ceramic layer 11.
- the heating resistor 2 and the second portion 32 may be in contact with one surface of one of the two ceramic layers 11.
- both the heat generating resistor 2 and the lead 3 can absorb the force.
- the heating resistor 2 and the second portion 32 may be continuous on one surface.
- “continuous on one surface” means on one surface of one of the two adjacent ceramic layers 11 when a cross section passing through the heating resistor 2 and the lead 3 is viewed. This means that the heating resistor 2 and the lead 3 are in contact with each other. As a result, the gap that becomes the starting point of the crack can be reduced at the interface between the heating resistor 2 and the second portion 32, thereby reducing the occurrence of cracks at the interface between the heating resistor 2 and the lead 3. it can.
- the other main surface may be in an arc shape recessed inward.
- the lead 3 and the heating resistor 2 may be made of a metal material and a ceramic material mixed in the metal material.
- a metal material include WC.
- the ceramic material include Si 3 N 4 or BN.
- the content of the ceramic material in the second portion 32 may be larger than the content of the ceramic material in the first portion 31. This makes it easier for the second portion 32 to crack than the first portion 31 when stress is applied to the entire lead 3. This is because the second portion 32 is less likely to be elastically deformed than the first portion 31 by reducing the proportion of the metal material and increasing the proportion of the ceramic material in the second portion 32. is there.
- a method for changing the composition of the first portion 31 and the second portion 32 for example, a method of forming the first portion 31 and the second portion 32 by separate green sheets can be mentioned.
- the thermal expansion coefficient of the heating resistor 2 may be made smaller than the thermal expansion coefficient of the lead 3.
- the thermal expansion coefficient of the heating resistor 2 may be made smaller than the thermal expansion coefficient of the lead 3.
- the thermal expansion coefficient of the heating resistor 2 is made smaller than the thermal expansion coefficient of the lead 3.
- the main component of the lead 3 and the heating resistor 2 is WC, and Si 3 N 4 having a thermal expansion coefficient smaller than WC is added as a subcomponent. At this time, by making the amount of Si 3 N 4 added to the heating resistor 2 larger than the amount of Si 3 N 4 added to the lead 3, the thermal expansion coefficient of the heating resistor 2 is increased. Can be smaller.
- the above ceramic heater 10 can be manufactured by using, for example, a hot press method. Specifically, first, a paste that becomes the heating resistor 2 and the lead 3 is laminated on the green sheet that becomes a part of the ceramic layer 11. At this time, in order to project the second portion 32 of the lead 3 to both sides of the heating resistor 2, a minute pressure is applied to the portion of the lead 3 that becomes the second portion 32, thereby The part used as the part 32 and green paste are stuck. Thereafter, another green sheet is laminated on the above-described green sheet so as to sandwich the heating resistor 2 and the lead 3 to obtain a laminate. Then, the ceramic heater 10 can be created by firing this laminate using a hot press method.
- the ceramic heater 10 is used, for example, as an ignition device 100 as shown in FIG.
- the ignition device 100 includes a ceramic heater 10 and a flow path 20 through which gaseous fuel flows through the ceramic heater 10.
- the flow path 20 is comprised by the ventilation pipe 22 which has the gas valve 21 and the jet nozzle 23, for example.
- the gas valve 21 has a function of controlling the flow rate of the gaseous fuel. Examples of the gaseous fuel supplied from the gas valve 21 include natural gas or propane gas.
- the ventilation pipe 22 ejects the gaseous fuel supplied from the gas valve 21 toward the ceramic heater 10 from the ejection port 23.
- the gaseous fuel can be ignited by heating the ejected gaseous fuel using the heater 10. Since the ignition device 100 includes the ceramic heater 10 that has improved long-term reliability, the stability of ignition of gaseous fuel is improved.
- Ceramic body 11 Ceramic layer 2: Heating resistor 21: Linear portion 22: Connection portion 3: Lead 31: First portion 32: Second portion 10: Ceramic heater 100: Ignition device
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Resistance Heating (AREA)
Abstract
Description
11:セラミック層
2:発熱抵抗体
21:直線部分
22:連結部分
3:リード
31:第1部分
32:第2部分
10:セラミックヒータ
100:点火装置
Claims (8)
- セラミック体と、該セラミック体に埋設された帯状の発熱抵抗体と、前記セラミック体に埋設されて前記発熱抵抗体の端部に接続された帯状のリードとを有し、
前記リードは、前記発熱抵抗体との接続部において前記発熱抵抗体の端部を覆う第1部分と、前記端部の両側に張り出した第2部分とを有しており、前記第1部分の厚みに比べて前記第2部分の厚みが薄くなっているセラミックヒータ。 - 前記リードと前記発熱抵抗体との接続部において、前記第2部分の厚みが外側に向かって薄くなっている請求項1に記載のセラミックヒータ。
- 前記第1部分の端部における厚みに比べて前記第2部分の張り出す長さが大きい請求項1または請求項2に記載のセラミックヒータ。
- 前記セラミック体が複数のセラミック層の積層体から成る請求項1乃至請求項3のいずれかに記載のセラミックヒータ。
- 前記発熱抵抗体と前記リードとが隣り合う2つの前記セラミック層の層間に設けられている請求項4に記載のセラミックヒータ。
- 前記発熱抵抗体と前記第2部分とが前記2つのセラミック層のうち一方のセラミック層の1つの面に接している請求項5に記載のセラミックヒータ。
- 前記発熱抵抗体と前記第2部分とが前記1つの面上において連続している請求項6に記載のセラミックヒータ。
- 請求項1乃至請求項7のいずれかに記載のセラミックヒータと、該セラミックヒータのうち前記セラミック体に気体燃料を流す流路とを備えた点火装置。
Priority Applications (3)
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CN201580022106.4A CN106233819B (zh) | 2014-05-27 | 2015-05-25 | 陶瓷加热器以及具备其的点火装置 |
EP15798970.8A EP3151630B1 (en) | 2014-05-27 | 2015-05-25 | Ceramic heater and ignition device provided with same |
JP2016523479A JP6027293B2 (ja) | 2014-05-27 | 2015-05-25 | セラミックヒータおよびそれを備える点火装置 |
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JP2014-109198 | 2014-05-27 | ||
JP2014109198 | 2014-05-27 |
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EP (1) | EP3151630B1 (ja) |
JP (1) | JP6027293B2 (ja) |
CN (1) | CN106233819B (ja) |
WO (1) | WO2015182535A1 (ja) |
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JP6673644B2 (ja) * | 2015-04-22 | 2020-03-25 | 京セラ株式会社 | セラミックヒータ |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01272078A (ja) * | 1988-04-21 | 1989-10-31 | Rinnai Corp | セラミックヒータ |
JPH03149791A (ja) * | 1989-11-04 | 1991-06-26 | Ngk Spark Plug Co Ltd | セラミックヒータ |
JPH0429192U (ja) * | 1990-07-02 | 1992-03-09 | ||
JPH05182746A (ja) * | 1991-12-28 | 1993-07-23 | Rohm Co Ltd | 加熱ヒータ |
JP2005135869A (ja) * | 2003-10-31 | 2005-05-26 | Kyocera Corp | 積層焼結体、セラミックヒータ、ガスセンサ素子、積層焼結体の製造方法およびガスセンサ素子の製造方法。 |
JP2007042615A (ja) * | 2005-06-29 | 2007-02-15 | Kyocera Corp | セラミックヒータおよびその製造方法、並びにガスセンサ素子 |
Family Cites Families (8)
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JP2000268944A (ja) * | 1998-08-03 | 2000-09-29 | Denso Corp | セラミックヒータおよびその製造方法,並びにガスセンサ |
JP2001227744A (ja) * | 2000-02-14 | 2001-08-24 | Denso Corp | セラミックグロープラグ |
JP4605932B2 (ja) * | 2001-04-11 | 2011-01-05 | 京セラ株式会社 | 接触加熱装置 |
JP2007227063A (ja) * | 2006-02-22 | 2007-09-06 | Kyocera Corp | セラミックヒータ |
CN101647314B (zh) * | 2007-02-22 | 2012-05-23 | 京瓷株式会社 | 陶瓷加热器、采用该陶瓷加热器的热线引火塞及陶瓷加热器的制造方法 |
WO2012147920A1 (ja) * | 2011-04-27 | 2012-11-01 | 京セラ株式会社 | ヒータおよびこれを備えたグロープラグ |
JP5721584B2 (ja) * | 2011-08-10 | 2015-05-20 | 京セラ株式会社 | ヒータおよびこれを備えたグロープラグ |
JP2013051070A (ja) * | 2011-08-30 | 2013-03-14 | Denso Corp | セラミックヒータ及びそれを用いたガスセンサ素子 |
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2015
- 2015-05-25 CN CN201580022106.4A patent/CN106233819B/zh active Active
- 2015-05-25 EP EP15798970.8A patent/EP3151630B1/en active Active
- 2015-05-25 WO PCT/JP2015/064851 patent/WO2015182535A1/ja active Application Filing
- 2015-05-25 JP JP2016523479A patent/JP6027293B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01272078A (ja) * | 1988-04-21 | 1989-10-31 | Rinnai Corp | セラミックヒータ |
JPH03149791A (ja) * | 1989-11-04 | 1991-06-26 | Ngk Spark Plug Co Ltd | セラミックヒータ |
JPH0429192U (ja) * | 1990-07-02 | 1992-03-09 | ||
JPH05182746A (ja) * | 1991-12-28 | 1993-07-23 | Rohm Co Ltd | 加熱ヒータ |
JP2005135869A (ja) * | 2003-10-31 | 2005-05-26 | Kyocera Corp | 積層焼結体、セラミックヒータ、ガスセンサ素子、積層焼結体の製造方法およびガスセンサ素子の製造方法。 |
JP2007042615A (ja) * | 2005-06-29 | 2007-02-15 | Kyocera Corp | セラミックヒータおよびその製造方法、並びにガスセンサ素子 |
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EP3151630B1 (en) | 2019-04-24 |
EP3151630A1 (en) | 2017-04-05 |
CN106233819B (zh) | 2019-07-05 |
EP3151630A4 (en) | 2018-01-24 |
CN106233819A (zh) | 2016-12-14 |
JPWO2015182535A1 (ja) | 2017-04-20 |
JP6027293B2 (ja) | 2016-11-16 |
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