WO2011052624A1 - セラミックヒータ - Google Patents
セラミックヒータ Download PDFInfo
- Publication number
- WO2011052624A1 WO2011052624A1 PCT/JP2010/069036 JP2010069036W WO2011052624A1 WO 2011052624 A1 WO2011052624 A1 WO 2011052624A1 JP 2010069036 W JP2010069036 W JP 2010069036W WO 2011052624 A1 WO2011052624 A1 WO 2011052624A1
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- WIPO (PCT)
- Prior art keywords
- ceramic heater
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/001—Glowing plugs for internal-combustion engines
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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
- 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 used for, for example, a heater for ignition of an oil fan heater or a glow plug used for assisting start of a diesel engine.
- ceramic heaters have been used in various applications including, for example, ignition heaters for oil fan heaters and glow plugs used to assist starting diesel engines.
- This ceramic heater is configured by, for example, a heating element made of conductive ceramics being embedded in a base made of insulating ceramics.
- a material constituting the heating element a material mainly composed of at least one of molybdenum, tungsten silicide, nitride, and carbide is used.
- a material mainly composed of silicon nitride is known.
- the material constituting the heating element generally has a larger thermal expansion coefficient than the material constituting the base, there is a possibility that the base may crack due to thermal stress generated between the two during heat generation. . Therefore, in order to reduce the difference in thermal expansion coefficient between them, a technique has been proposed in which the base material contains a rare earth component, a chromium silicide and an aluminum component (see, for example, Patent Document 1).
- the present invention has been devised to solve such problems in conventional ceramic heaters, and its purpose is to suppress the occurrence of cracks in the substrate due to the difference in thermal expansion between the heating element and the ceramic substrate. And providing a ceramic heater with excellent durability.
- a heating resistor having a heating portion composed of a folded portion and two straight portions respectively extending from both ends of the folded portion is embedded in the ceramic base.
- the part is characterized in that at least the center part on the inner side facing each other in the cross-sectional shape is concave.
- the two straight portions have a curved concave shape in which at least the central portion on the inside facing each other is curved.
- the two straight portions have curved shapes in which the outer sides are curved in the cross-sectional shape.
- the two straight portions have a crescent shape in the cross-sectional shape.
- the ceramic base at the position where the two straight portions are arranged has a cross-sectional shape between an outer peripheral shape and a concave wall surface of at least a central portion on the inner side opposite to each other of the two straight portions. It is preferable that the shape is dissimilar.
- the cross-sectional shape of the folded portion is the same as the cross-sectional shape of the straight portion.
- the heating resistor is characterized in that the heating portion has a higher resistance than other portions.
- the two linear portions are concave at least at the center portions on the inner sides facing each other in the cross-sectional shape, the areas of the inner surfaces facing each other are increased, and the surfaces thereof are also increased. Is not straight when viewed in cross section, it is possible to disperse the stress generated when the ceramic base partitioned by at least the central part (concave part) on the inner side facing each other is volume-expanded. This stress can be relieved by acting like a cushion. Therefore, it is possible to prevent the ceramic base between the heat generating parts from expanding and cracking when a sudden voltage application occurs during an abnormality.
- FIG. 2 is a cross-sectional view of the ceramic heater shown in FIG. It is a cross-sectional view which shows the other example of embodiment of the ceramic heater of this invention. It is a cross-sectional view which shows the further another example of embodiment of the ceramic heater of this invention. It is a cross-sectional view which shows the further another example of embodiment of the ceramic heater of this invention. It is a cross-sectional view which shows the further another example of embodiment of the ceramic heater of this invention. It is a cross-sectional view which shows the further another example of embodiment of the ceramic heater of this invention. It is sectional drawing which shows an example of the metal mold
- FIG. 1 (a) is a plan perspective view illustrating an example of an embodiment of a ceramic heater according to the present invention
- FIG. 1 (b) is an enlarged view of a main part thereof.
- FIG. 2 is a cross-sectional view of the ceramic heater shown in FIG.
- a heating resistor having a heating portion 2 including a folded portion 2c and two straight portions 2a and 2b respectively extending from both ends of the folded portion 2c is embedded in the ceramic substrate 1. It becomes the composition.
- the folded portion 2 c is embedded so as to be located at the tip of the ceramic substrate 1.
- the folded portion 2c is formed in an arc shape in a plan view, and the straight portions 2a and 2b are parallel portions formed in parallel with each other in a plan view, and heat generated by the folded portion 2c and the straight portions 2a and 2b.
- the part 2 is formed in a U shape.
- silicon nitride ceramics As a material for forming the ceramic substrate 1, alumina ceramics or silicon nitride ceramics are preferable because of their excellent insulation characteristics at high temperatures, but silicon nitride ceramics are particularly preferable because of their high durability characteristics during rapid temperature rise. preferable.
- the structure of silicon nitride ceramics has a form in which main crystal phase particles mainly composed of silicon nitride (Si 3 N 4 ) are bonded by a grain boundary phase derived from a sintering aid component or the like. In the main crystal phase, a part of silicon (Si) or nitrogen (N) is replaced by aluminum (Al) or oxygen (O), and metal elements such as Li, Ca, Mg, and Y are solidified in the main crystal phase. It may be melted.
- conductive ceramics such as tungsten carbide (WC), molybdenum disilicide (MoSi 2 ), tungsten disilicide (WSi 2 ) can be used as a material for forming the heat generating portion 2.
- lead portions 3a and 3b are connected to respective ends of the straight portions 2a and 2b constituting the heat generating portion 2, and heat is generated by flowing current to the heat generating portion 2 through the lead portions 3a and 3b.
- the part 2 generates heat.
- the lead portions 3a and 3b are formed in substantially the same direction by being integrated with each of the straight portions 2a and 2b constituting the heat generating portion 2 with the same material as that of the heat generating portion 2, preferably.
- the diameter is larger than that of the heat generating portion 2, and the resistance per unit length is lower than that of the heat generating portion 2 in order to suppress unnecessary heat generation.
- the end surface of the lead portion 3a opposite to the side connected to the linear portion 2a is exposed from the base end portion of the ceramic base 1, and constitutes an electrode extraction portion 4a. Further, the end surface of the lead portion 3b opposite to the side connected to the linear portion 2b is exposed from the side surface of the ceramic base 1 to constitute the electrode extraction portion 4b.
- the heat generating part 2 and the lead parts 3a and 3b may be separately molded with different compositions, and in this case, the lead parts 3a and 3b are more than the heat generating part 2 in order to suppress unnecessary heat generation. Also, the resistance per unit length is low.
- the two linear portions are concave at least at the center portions on the inner sides facing each other in the cross-sectional shape (hereinafter, at least the center portions on the inner sides facing each other are referred to as the recess portions 5). ).
- the two linear portions 2a and 2b have a concave shape in at least a central portion facing each other in the cross-sectional shape (at least a central portion facing each other). Since the area of the inner surfaces facing each other is large, and the surface is not straight when viewed in cross section, at least the central portion (recessed portion) facing each other.
- the stress generated when the ceramic substrate 1 partitioned by the volume expansion is dispersed, and the heat generating portion 2 acts like a cushion to relieve the stress. Therefore, it is possible to prevent the ceramic base 1 between the heat generating portions from expanding in volume and causing cracks when a sudden voltage application occurs during an abnormality.
- the concave shape at least in the central part means that the concave part 5 may be provided only in the inner central part facing each other, or the concave part 5 may be provided over almost the entire inner side facing each other. In other words, it means that the opening of the recess 5 may be only the inner central part facing each other, or may extend over almost the entire inner part facing each other.
- the regions other than the concave portion 5 inside the two linear portions 2 a and 2 b facing each other are flat surfaces and face each other in parallel. Such a shape can be produced using a press molding method or an injection molding method as described later.
- the concave portion 5 is effective even in a slightly concave shape, but in order to bring out a cushion-like effect, the depth of the concave portion 5 is the width direction in the cross section of the straight portions 2a and 2b (horizontal in FIG. 2).
- Direction) thickness is preferably 3% or more.
- the depth of the concave portion 5 is It is 50% or less of the thickness in the width direction (horizontal direction in FIG. 2) (thickness in the width direction of the straight portions 2a and 2b when the concave portion 5 is not formed) in the cross section of the straight portions 2a and 2b. It is preferable.
- the length of the opening of the recess 5 in the height direction is the same as the thickness in the height direction (vertical direction in FIG. 2) in the cross section of the parallel portions 2a and 2b (the recess 5 is formed. 5% or more of the thickness in the height direction of the straight portions 2a and 2b when it is assumed that it is not, and preferably 70% or less from the viewpoint of the cushioning effect.
- the concave portion 5 is provided in the entire longitudinal direction of the heat generating portion 2 (the folded portion 2c and the straight portions 2a and 2b) in order to maximize the cushion effect.
- the ceramic heater 10 of the present invention preferably has a curved concave shape in which at least the central portion (recessed portion 5) on the inner side of the linear portions 2 a and 2 b constituting the heat generating portion 2 is curved. .
- the curved curved concave shape means that there is no refraction point inside the concave portion 5, and the curved curve is preferably a smooth curve as a whole rather than a slightly curved corner.
- the depth of the recess 5 is set to the thickness in the width direction (horizontal direction in FIG. 3) in the cross section of the straight portions 2a and 2b (the recess 5 is formed). It is preferable that it is 50% or less of the thickness in the width direction of the straight portions 2a and 2b). According to this embodiment, since the stress is concentrated in the concave portion 5 and there is no refraction point at which cracks are likely to occur, the occurrence of cracks in the ceramic substrate 1 can be further suppressed.
- the two straight portions 2a and 2b have a curved shape in which the outer sides are curved in the cross-sectional shape.
- the curved shape in which the outer side is curved means that there is no refraction point on the outer side, and the curved curve is preferably a smooth curve as a whole, rather than a slightly rounded curve. According to this embodiment, since there is no refraction point at which stress concentrates and cracks are likely to occur on the outer sides of the two straight portions 2a and 2b, the occurrence of cracks in the ceramic substrate 1 is further suppressed. can do.
- the two straight portions 2a and 2b have a crescent shape in the cross-sectional shape.
- the crescent-shaped thin and sharp end portions generate heat preferentially when voltage is applied, but the thin and sharp end portions are arranged approximately evenly in the longitudinal direction of the heat generating portion 2, Since the temperature of the ceramic substrate 1 rises evenly, the time during which the temperature distribution in the circumferential direction of the ceramic heater 10 becomes uniform becomes faster. Therefore, it is more desirable that both crescent-shaped thin and sharp end portions are arranged at equal positions from the outer periphery in the cross section of the ceramic heater 10.
- the ceramic heater 10 of the present invention has an outer peripheral shape and two linear portions 2 a and 2 b facing each other in the cross-sectional shape of the ceramic substrate 1 in the linear portions 2 a and 2 b of the heat generating portion 2. It is preferable that at least the shape between the concave portions of the central portion (recessed portion 5) is not similar. In other words, the ceramic substrate 1 at the position where the two straight portions 2a and 2b are arranged has at least a central portion (in the cross-sectional shape) of the outer periphery and the two straight portions 2a and 2b facing each other. It is preferred that the shape between the concave wall surfaces of the recess 5) is dissimilar.
- the outer peripheral shape of the cross section of the ceramic substrate 1 is a circle, and the cross sectional shape of the ceramic substrate 1 between the recesses 5 is an ellipse, which are in a non-similar relationship.
- the dissimilarity means that the outer peripheral shape of the cross section of the ceramic substrate 1 at the position where the two straight portions 2a and 2b are disposed and at least the central portion of the two straight portions 2a and 2b facing each other.
- the shape between the concave wall surfaces of the (recess 5) is not the same type.
- the outer peripheral shape of the cross section of the ceramic substrate 1 is a circle
- the shape between the wall surfaces of the recess 5 is A circle is similar, and a square or ellipse is dissimilar.
- the ratio of the short axis to the long axis of the ellipse here is 1: 1.2 or more.
- the shape between the recesses 5 is a square, and the ratio of the short side to the long side is 20 as compared with the ratio of the short side and the long side of the square of the outer peripheral shape. % Is similar, and the shape between the recesses 5 is not similar to a circle or an ellipse.
- the shape between the concave shapes 5 is a square, and the ratio of the short side and the long side exceeds 20% compared to the ratio of the short side and the long side of the outer peripheral shape is dissimilar, but preferably a circle or an ellipse Is better.
- the shape of the outer periphery of the ceramic substrate 1 and the shape between the concave wall surfaces of at least the central part (concave part 5) of the two linear parts 2a, 2b facing each other are dissimilar, Resonance is less likely to occur between the outer ceramic substrate 1 and the inner ceramic substrate 1 partitioned by the heat generating portion 2 during intense vibration, increasing the high temperature strength and improving the durability.
- the cross-sectional shape of the folded portion 2c is the same as the cross-sectional shape of the two straight portions 2a and 2b. According to this embodiment, since there is no step between the folded portion 2c and the straight portions 2a and 2b, the stress is prevented from concentrating when the heat generating portion 2 expands due to voltage application, and the ceramic substrate 1 (folding of the heat generating portion 2) is prevented. It is possible to suppress the occurrence of cracks at the joint 2c and the two straight portions 2a and 2b). It should be noted that the cross-sectional shape of the folded portion 2c of the heat generating portion 2 and the cross-sectional shape of the straight portions 2a and 2b are different from each other, and gradually become different shapes from these connecting portions. May be.
- the heat generating portion 2 has a higher resistance than the lead portions 3a and 3b.
- high resistance means that the resistance per unit length is high. Since the heat generating portion 2 has a higher resistance than the lead portions 3a and 3b, the heat generating portion 2 can reliably obtain a high temperature. And since the shape of the heat generating resistor in the heat generating part 2 is the shape as in the present invention, it is excellent in durability without cracking. Therefore, the highly reliable ceramic heater 10 with excellent heating efficiency can be obtained.
- a mold for forming the heat generating part 2 as shown in FIG. 7 is prepared.
- This mold is composed of an upper mold 61 and a lower mold 62.
- the shape of the heat generating part 2 (parallel parts 2a and 2b in FIG. 7) is obtained.
- Corresponding cavities are formed.
- a spacer 63 for forming the concave portion 5 is disposed on the die boundary surface between the upper die 61 and the lower die 62. .
- the recessed part 5 can be formed in the heat_generation
- the spacer 63 may be separated from the molded body after the molded body is taken out, or may be separated from the molded body by providing a spacer slide mechanism in the mold.
- the forming material of the heat generating portion 2 is manufactured by filling the cavity with the material for forming the heat generating portion 2.
- Examples of the material for forming the heat generating portion 2 include conductive ceramics such as tungsten carbide (WC), molybdenum disilicide (MoSi 2 ), and tungsten disilicide (WSi 2 ).
- conductive ceramics such as tungsten carbide (WC), molybdenum disilicide (MoSi 2 ), and tungsten disilicide (WSi 2 ).
- tungsten carbide (WC) is used as the material for forming the heat generating portion 2
- the silicon nitride ceramics that are the main component of the ceramic substrate 1 are used as the WC powder. It is preferable to blend insulating ceramics such as.
- the electrical resistance of the heat generating portion 2 can be adjusted to a desired value by changing the content ratio of the conductive ceramic and the insulating ceramic.
- the raw material powder having the content ratio thus prepared is filled into the cavity of the mold by a press molding method or an injection molding method to produce a molded body of the heat generating portion 2.
- the ceramic body 1 is formed by adding a sintering aid made of an oxide of a rare earth element such as ytterbium (Yb), yttrium (Y), or erbium (Er) to an alumina powder or silicon nitride powder, for example.
- a sintering aid made of an oxide of a rare earth element such as ytterbium (Yb), yttrium (Y), or erbium (Er) to an alumina powder or silicon nitride powder, for example.
- the raw material powder is molded by a known press molding method, injection molding method, or the like, similarly to the heat generating portion 2.
- the molded body of the heat generating portion 2 molded using the above molds (the upper mold 61 and the lower mold 62) is combined with the molded body of the lead portions 3a and 3b molded with a separate mold, and further A combination of the molded bodies of the ceramic substrate 1 formed with a separate mold so as to embed the ceramic heater 10 is a generated shape of the ceramic heater 10.
- the obtained shaped body of the ceramic heater 10 is fired according to a predetermined temperature profile so that the heat generating portion 2 and the lead portions 3a and 3b become the ceramic substrate 1 embedded therein, and the obtained sintered body is obtained.
- the ceramic heater 10 as shown in FIG. 1 is completed by machining as necessary.
- the firing method if silicon nitride ceramics is used as the ceramic of the ceramic substrate 1, for example, after a degreasing process, the temperature is about 1650 to 1780 ° C. and the pressure is about 30 to 50 MPa in a reducing atmosphere. The method by the hot press which bakes is mentioned.
- the ceramic heater 10 obtained by such a manufacturing method, since the two linear portions 2a and 2b are concave at least at the center portion on the inner side facing each other in the cross-sectional shape, the inner sides facing each other.
- the stress generated when the ceramic substrate 1 partitioned by at least the central portion (recessed portion 5) is expanded in volume can be mitigated by the heat generating portion 2 acting like a cushion. Therefore, it is possible to prevent the ceramic base body between the heat generating portions 2 from undergoing volume expansion and cracking when a sudden voltage application occurs during an abnormality.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Resistance Heating (AREA)
Abstract
Description
1・・・セラミック基体
2・・・発熱部
2a,2b・・・直線部
2c・・・折返し部
3a,3b・・・リード部
4a,4b・・・電極取り出し部
5・・・凹部
Claims (7)
- セラミック基体の内部に、折返し部および該折返し部の両端からそれぞれ延びた2本の直線部からなる発熱部を有する発熱抵抗体が埋設されており、前記2本の直線部は、横断面形状において互いに対向する内側の少なくとも中央部が凹状であることを特徴とするセラミックヒータ。
- 前記2本の直線部が互いに対向する内側の少なくとも中央部が湾曲した曲線状の凹状であることを特徴とする請求項1に記載のセラミックヒータ。
- 前記2本の直線部は、横断面形状において互いの外側が湾曲した曲線状であることを特徴とする請求項1または請求項2に記載のセラミックヒータ。
- 前記2本の直線部は、横断面形状においてそれぞれ三日月状であることを特徴とする請求項3に記載のセラミックヒータ。
- 前記2本の直線部が配置された位置の前記セラミック基体は、横断面形状において、外周の形状と前記2本の直線部の互いに対向する内側の少なくとも中央部の凹状の壁面の間の形状とが非相似であることを特徴とする請求項1に記載のセラミックヒータ。
- 前記折返し部の横断面形状が、前記直線部の横断面形状と同じであることを特徴とする請求項1に記載のセラミックヒータ。
- 前記発熱抵抗体は、前記発熱部が他の部分よりも高抵抗であることを特徴とする請求項1に記載のセラミックヒータ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010800410383A CN102511196A (zh) | 2009-10-27 | 2010-10-27 | 陶瓷加热器 |
US13/499,382 US8933373B2 (en) | 2009-10-27 | 2010-10-27 | Ceramic heater |
EP10826756.8A EP2496051B1 (en) | 2009-10-27 | 2010-10-27 | Ceramic heater |
JP2011538450A JP5377662B2 (ja) | 2009-10-27 | 2010-10-27 | セラミックヒータ |
KR1020127007158A KR101598014B1 (ko) | 2009-10-27 | 2010-10-27 | 세라믹 히터 |
Applications Claiming Priority (2)
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JP2009246042 | 2009-10-27 | ||
JP2009-246042 | 2009-10-27 |
Publications (1)
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WO2011052624A1 true WO2011052624A1 (ja) | 2011-05-05 |
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ID=43922049
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2010/069036 WO2011052624A1 (ja) | 2009-10-27 | 2010-10-27 | セラミックヒータ |
Country Status (6)
Country | Link |
---|---|
US (1) | US8933373B2 (ja) |
EP (1) | EP2496051B1 (ja) |
JP (1) | JP5377662B2 (ja) |
KR (1) | KR101598014B1 (ja) |
CN (1) | CN102511196A (ja) |
WO (1) | WO2011052624A1 (ja) |
Cited By (5)
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JP2014102057A (ja) * | 2012-11-22 | 2014-06-05 | Ngk Spark Plug Co Ltd | グロープラグおよびグロープラグの製造方法 |
EP2827062A1 (en) | 2013-07-09 | 2015-01-21 | NGK Spark Plug Co., Ltd. | Ceramic heater, glow plug, method of manufacturing ceramic heater and method of manufacturing glow plug |
WO2016103908A1 (ja) * | 2014-12-25 | 2016-06-30 | 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 |
JP2017216045A (ja) * | 2016-05-30 | 2017-12-07 | 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 |
WO2018199229A1 (ja) * | 2017-04-27 | 2018-11-01 | 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 |
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US9491805B2 (en) * | 2011-04-27 | 2016-11-08 | Kyocera Corporation | Heater and glow plug provided with same |
WO2014123550A1 (en) * | 2013-02-11 | 2014-08-14 | Contour Hardening, Inc. | Combustion ignition system |
JP6410758B1 (ja) * | 2016-05-24 | 2018-10-24 | 三井金属鉱業株式会社 | セラミックス格子体 |
KR102533873B1 (ko) * | 2019-02-19 | 2023-05-19 | 엔지케이 인슐레이터 엘티디 | 세라믹 히터 및 그 제법 |
CN116963326B (zh) * | 2023-08-02 | 2024-06-21 | 南通通杰照明有限公司 | 陶瓷加热器和电热塞 |
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2010
- 2010-10-27 EP EP10826756.8A patent/EP2496051B1/en active Active
- 2010-10-27 US US13/499,382 patent/US8933373B2/en active Active
- 2010-10-27 JP JP2011538450A patent/JP5377662B2/ja active Active
- 2010-10-27 WO PCT/JP2010/069036 patent/WO2011052624A1/ja active Application Filing
- 2010-10-27 CN CN2010800410383A patent/CN102511196A/zh active Pending
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2014102057A (ja) * | 2012-11-22 | 2014-06-05 | Ngk Spark Plug Co Ltd | グロープラグおよびグロープラグの製造方法 |
EP2827062A1 (en) | 2013-07-09 | 2015-01-21 | NGK Spark Plug Co., Ltd. | Ceramic heater, glow plug, method of manufacturing ceramic heater and method of manufacturing glow plug |
JP2015018625A (ja) * | 2013-07-09 | 2015-01-29 | 日本特殊陶業株式会社 | セラミックヒータ、グロープラグ、セラミックヒータの製造方法、および、グロープラグの製造方法 |
US9655170B2 (en) | 2013-07-09 | 2017-05-16 | Ngk Spark Plug Co., Ltd. | Ceramic heater, glow plug, method of manufacturing ceramic heater and method of manufacturing glow plug |
WO2016103908A1 (ja) * | 2014-12-25 | 2016-06-30 | 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 |
JP6023389B1 (ja) * | 2014-12-25 | 2016-11-09 | 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 |
CN107211492A (zh) * | 2014-12-25 | 2017-09-26 | 京瓷株式会社 | 加热器以及具备其的电热塞 |
CN107211492B (zh) * | 2014-12-25 | 2020-09-04 | 京瓷株式会社 | 加热器以及具备其的电热塞 |
JP2017216045A (ja) * | 2016-05-30 | 2017-12-07 | 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 |
WO2018199229A1 (ja) * | 2017-04-27 | 2018-11-01 | 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 |
JPWO2018199229A1 (ja) * | 2017-04-27 | 2020-01-09 | 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 |
Also Published As
Publication number | Publication date |
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KR101598014B1 (ko) | 2016-02-26 |
JPWO2011052624A1 (ja) | 2013-03-21 |
EP2496051B1 (en) | 2017-01-04 |
KR20120086690A (ko) | 2012-08-03 |
EP2496051A4 (en) | 2015-02-18 |
US8933373B2 (en) | 2015-01-13 |
CN102511196A (zh) | 2012-06-20 |
EP2496051A1 (en) | 2012-09-05 |
JP5377662B2 (ja) | 2013-12-25 |
US20120234823A1 (en) | 2012-09-20 |
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