WO2019004286A1 - Appareil de chauffage - Google Patents

Appareil de chauffage Download PDF

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Publication number
WO2019004286A1
WO2019004286A1 PCT/JP2018/024376 JP2018024376W WO2019004286A1 WO 2019004286 A1 WO2019004286 A1 WO 2019004286A1 JP 2018024376 W JP2018024376 W JP 2018024376W WO 2019004286 A1 WO2019004286 A1 WO 2019004286A1
Authority
WO
WIPO (PCT)
Prior art keywords
ceramic body
rear end
lead terminal
heater
ceramic
Prior art date
Application number
PCT/JP2018/024376
Other languages
English (en)
Japanese (ja)
Inventor
良彦 木佐木
Original Assignee
京セラ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 京セラ株式会社 filed Critical 京セラ株式会社
Priority to JP2019526981A priority Critical patent/JPWO2019004286A1/ja
Publication of WO2019004286A1 publication Critical patent/WO2019004286A1/fr

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Classifications

    • 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
    • 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

Definitions

  • the present disclosure relates to, for example, a heater for ignition or flame detection in a combustion type vehicle heating system, a heater for ignition of various combustion devices such as a petroleum fan heater, a heater for glow plugs of a diesel engine, and various sensors such as an oxygen sensor.
  • the present invention relates to a heater used for the heater of the above or a heater for heating a measuring instrument.
  • Patent Document 1 a ceramic heater described in JP-A-2006-258417 (hereinafter, referred to as Patent Document 1) is known.
  • the ceramic heater disclosed in Patent Document 1 includes a rod-shaped ceramic heater main body, a resistance heating element embedded at the front end side in the ceramic heater main body, an electrode lead-out lead connected to the resistance heating element, and a ceramic heater main body And a lead terminal connected to the lead for electrode extraction at the rear end of the The lead terminal is provided in close contact with the rear end surface of the ceramic heater main body.
  • the heater according to an example of the present disclosure is electrically connected to a rod-like or cylindrical ceramic body, a heating resistor embedded at the tip end of the ceramic body, and the heating resistor, and is embedded in the ceramic body.
  • a feed portion drawn to the side surface on the rear end side of the ceramic body, and a lead terminal electrically connected to the feed portion and fixed to the side surface on the rear end side of the ceramic body.
  • the lead terminal is continuous with the first portion extending from the portion fixed to the side surface on the rear end side of the ceramic body to the rear from the rear end surface of the ceramic body, and the first portion; And a second portion overlapping the ceramic body when viewed in a direction perpendicular to the rear end surface, and a gap is provided between the ceramic body and the second portion.
  • FIG. 1 is a longitudinal sectional view showing a heater 10 which is an example of the present disclosure.
  • the heater 10 includes a rod-like or cylindrical ceramic body 1, a heating resistor 2 embedded at the tip end of the ceramic body 1, and a rear end of the ceramic body 1 embedded in the ceramic body 1.
  • the power supply unit 3 is drawn out to the side surface of the side, and the lead terminal 4 fixed to the side surface on the rear end side of the ceramic body 1.
  • the front end side of the ceramic body 1 here means one when the ceramic body 1 is divided in half in the longitudinal direction.
  • the rear end side of the ceramic body 1 mentioned here means the other when the ceramic body 1 is divided in half in the longitudinal direction.
  • the heating resistor 2 is a resistor that generates heat when current flows.
  • the heating resistor 2 is embedded in the front end side of the ceramic body 1.
  • the heating resistor 2 has, for example, a folded shape.
  • the heating resistor 2 has a metal material such as tungsten or tungsten carbide, for example.
  • the dimensions of the heat generating resistor 2 can be, for example, 0.1 to 5 mm in width, 0.05 to 0.3 mm in thickness, and 1 to 500 mm in total length.
  • the power feeding portion 3 is formed to extend from the portion joined to the heating resistor 2 to the rear end side of the ceramic body 1 and the back of the ceramic body 1. At the end side, there is a portion formed to extend from the inside of the ceramic body 1 to the side surface of the ceramic body 1. Further, in the case where the heat generating resistor 2 has a folded shape, the feed portions 3 may be provided at both ends of the heat generating resistor 2 respectively. In this case, one of the feeding parts 3 may be drawn out to the side surface on the rear end side of the ceramic body 1.
  • the feeding portion 3 has a metal material containing, for example, tungsten or tungsten carbide, tungsten nitride, molybdenum, or ceramic powder such as silicon nitride. For example, by making the cross-sectional area larger than the heating resistor 2, the resistance value per unit length may be low. Thereby, the calorific value in the feed section 3 can be reduced.
  • the dimensions of the feeding portion 3 can be, for example, 0.1 to 5 mm in width, 0.005 to 0.3 mm in thickness, and 1 to 100 mm in total length.
  • the entire device does not spread in the radial direction of the ceramic body 1 and can be miniaturized. As a result, the mountability of the heater 10 can be enhanced.
  • a gap is provided between the ceramic body 1 and the second portion 42.
  • the second portion 42 can be deformed.
  • the second portion 42 can absorb an external force by deformation of the second portion 42. Therefore, it is possible to reduce the possibility that stress is concentrated on the bonding portion between the ceramic body 1 and the lead terminal 4.
  • the possibility of breakage of the joint between the ceramic body 1 and the lead terminal 4 can be reduced.
  • the durability of the heater 10 can be improved.
  • the other end of the second portion 42 is, for example, 0.01 to 1 mm away from the end face of the ceramic body 1.
  • the first portion 41 and the second portion 42 may be smoothly continuous.
  • “smoothly continuous” means that the side surface of the first portion 41 and the side surface of the second portion 42 are continuous so as to form a curved surface.
  • the second portion 42 may be curved. Thereby, when an external force is applied to the second portion 42, the stress generated in the second portion 42 can be dispersed. Therefore, stress is concentrated on a part of the lead terminal 4 and the possibility of breakage of the lead terminal 4 can be reduced. As a result, the durability of the heater 10 can be improved.
  • the second portion 42 may have an arc shape which is convex in a direction away from the rear end surface 11 of the ceramic body 1. In this case, when vibration in the axial direction of the ceramic body 1 is applied to the second portion 42, the vibration can be absorbed by deformation of the second portion 42. As a result, the possibility of stress concentration on the joint between the ceramic body 1 and the lead terminal 4 can be reduced. Therefore, the risk of damage to the lead terminal 4 can be reduced. As a result, the durability of the heater 10 can be improved.
  • the lead terminal 4 may further include a third portion 43 which is continuous with the second portion 42 and extends in a direction away from the rear end surface 11.
  • a third portion 43 which is continuous with the second portion 42 and extends in a direction away from the rear end surface 11.
  • the third portion 43 may have a portion extending in a direction perpendicular to the rear end surface 11 of the ceramic body 1.
  • the second portion 42 and the third portion 43 may be smoothly continuous.
  • the third portion 43 of the lead terminal 4 it is possible to disperse the stress applied to the portion where the second portion 42 and the third portion 43 are continuous. Therefore, the possibility that the part which the 2nd part 42 and the 3rd part 43 continue may be damaged can be reduced. As a result, the durability of the lead terminal 4 can be improved.
  • “smoothly continuous” means that the side surface of the second portion 42 and the side surface of the third portion 43 are continuous so as to form a curved surface.
  • the second portion 42 may extend in the direction away from the rear end surface 11 and may be bonded to the outer edge portion of the rear end surface 11 by the bonding material 5.
  • the bonding strength between the ceramic body 1 and the lead terminal 4 is increased by the bonding material 5, it is possible to provide a gap in which the second portion 42 is deformed when an external force is applied to the second portion 42.
  • the durability of the heater 10 can be improved.
  • the outer edge portion is an outer side of an imaginary circle having a half diameter and the same center as the rear end surface 11 of the rear end surface 11. It is an area.
  • the shape of rear end face 11 of ceramic body 1 is a quadrilateral, it is a similar shape to rear end face 11 of rear end face 11 in a region outside a virtual quadrilateral whose half length is half and whose center is the same. is there.
  • the first portion 41 may extend so as to surround the outer peripheral surface of the ceramic body 1 in the circumferential direction of the ceramic body 1.
  • the first portion 41 may spirally surround the outer peripheral surface of the ceramic body 1. Therefore, the first portion 41 can be hardly peeled off from the ceramic body 1 against external force from various directions in the circumferential direction.
  • the durability of the heater 10 can be improved.
  • the first portion 41 may be wound 2 to 6 times on the side surface on the rear end side of the ceramic body 1.
  • the bonding material 5 may be provided on the whole of the ceramic body 1 in the circumferential direction, and the ceramic body 1 and the lead terminal 4 may be bonded on the whole of the ceramic body 1 in the circumferential direction.
  • the inner curve of the lead terminal 4 when viewed in cross section or side A line connecting the start point of the first portion and the start point of the outer curve can be used as the boundary between the first portion 41 and the second portion 42.
  • a line connecting the second portion 42 and the vertex of the outer broken line can be used as the boundary between the second portion 42 and the third portion 43.
  • Ceramic body 11 Rear end face 2: Heating resistor 3: Feeding part 4: Lead terminal 41: First part 42: Second part 43: Third part 5: Bonding material 10: Heater

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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

La présente invention concerne un appareil de chauffage 10 comprenant : un corps en céramique 1 ; un corps résistif de dissipation de chaleur 2 intégré dans le côté pointe du corps en céramique 1 ; une partie d'alimentation électrique 3 incorporée dans le corps en céramique 1 et tirée d'une surface latérale du côté extrémité arrière du corps en céramique 1 ; et une borne conductrice 4 connectée électriquement à la partie d'alimentation électrique 3 et fixée à la surface latérale du côté extrémité arrière du corps en céramique 1. La borne conductrice 4 comprend : une première partie 41 s'étendant d'une partie fixée à la surface latérale du côté extrémité arrière du corps en céramique 1 au côté arrière de la surface d'extrémité arrière 11 du corps en céramique 1 ; et une seconde partie 41 qui est contigüe à la première partie 41 et qui, observée dans une direction perpendiculaire à la surface d'extrémité arrière 11, fait l'objet d'un chevauchement par le corps en céramique 1, un espace étant prévu entre le corps en céramique 1 et la seconde partie 42.
PCT/JP2018/024376 2017-06-28 2018-06-27 Appareil de chauffage WO2019004286A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019526981A JPWO2019004286A1 (ja) 2017-06-28 2018-06-27 ヒータ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-126621 2017-06-28
JP2017126621 2017-06-28

Publications (1)

Publication Number Publication Date
WO2019004286A1 true WO2019004286A1 (fr) 2019-01-03

Family

ID=64741672

Family Applications (1)

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PCT/JP2018/024376 WO2019004286A1 (fr) 2017-06-28 2018-06-27 Appareil de chauffage

Country Status (2)

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JP (1) JPWO2019004286A1 (fr)
WO (1) WO2019004286A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7433200B2 (ja) 2020-12-01 2024-02-19 京セラ株式会社 ヒータ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001267044A (ja) * 2000-03-23 2001-09-28 Ngk Spark Plug Co Ltd セラミックヒータ及びその製造方法
JP2006049279A (ja) * 2004-06-29 2006-02-16 Ngk Spark Plug Co Ltd セラミックヒータ、グロープラグ及びセラミックヒータの製造方法
JP2009224317A (ja) * 2008-02-20 2009-10-01 Ngk Spark Plug Co Ltd セラミックヒータ及びグロープラグ
JP2016525202A (ja) * 2013-06-26 2016-08-22 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング グロープラグ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001267044A (ja) * 2000-03-23 2001-09-28 Ngk Spark Plug Co Ltd セラミックヒータ及びその製造方法
JP2006049279A (ja) * 2004-06-29 2006-02-16 Ngk Spark Plug Co Ltd セラミックヒータ、グロープラグ及びセラミックヒータの製造方法
JP2009224317A (ja) * 2008-02-20 2009-10-01 Ngk Spark Plug Co Ltd セラミックヒータ及びグロープラグ
JP2016525202A (ja) * 2013-06-26 2016-08-22 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング グロープラグ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7433200B2 (ja) 2020-12-01 2024-02-19 京セラ株式会社 ヒータ

Also Published As

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JPWO2019004286A1 (ja) 2019-12-12

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