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GB2014063A - Electrical heater and method of making - Google Patents

Electrical heater and method of making

Info

Publication number
GB2014063A
GB2014063A GB7903505A GB7903505A GB2014063A GB 2014063 A GB2014063 A GB 2014063A GB 7903505 A GB7903505 A GB 7903505A GB 7903505 A GB7903505 A GB 7903505A GB 2014063 A GB2014063 A GB 2014063A
Authority
GB
United Kingdom
Prior art keywords
sheath
metal powder
closed end
heating element
insulating material
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB7903505A
Other versions
GB2014063B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motors Liquidation Co
Original Assignee
General Motors Corp
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 General Motors Corp filed Critical General Motors Corp
Publication of GB2014063A publication Critical patent/GB2014063A/en
Application granted granted Critical
Publication of GB2014063B publication Critical patent/GB2014063B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • 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
    • 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
    • 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
    • F23Q2007/004—Manufacturing or assembling methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Resistance Heating (AREA)

Abstract

A sheathed electric heater 22, e.g. for use as an engine glow plug, is formed from a closed end metal sheath 24 having a centred electric heating element 30. A small amount of sinterable metal powder 32 is added to the sheath to cover the end 31 of the heating element at the closed end of the sheath and the remaining volume around the element is filled with granular electrical insulating material 42. The assembly is swaged using dies 44 to reduce its diameter, extend its length and compact the insulation and metal powder. The metal powder is sintered by passing electric current through the element to provide a low resistance electrical connection between the heating coil and the closed end of the sheath. The metal powder may be nickel and the insulating material is preferably magnesium oxide. The sheath and heating element are made of nickel alloy. <IMAGE>
GB7903505A 1978-02-10 1979-02-01 Electrical heater and method of making Expired GB2014063B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87669378A 1978-02-10 1978-02-10

Publications (2)

Publication Number Publication Date
GB2014063A true GB2014063A (en) 1979-08-22
GB2014063B GB2014063B (en) 1982-02-17

Family

ID=25368377

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7903505A Expired GB2014063B (en) 1978-02-10 1979-02-01 Electrical heater and method of making

Country Status (5)

Country Link
JP (1) JPS54117958A (en)
AU (1) AU520216B2 (en)
CA (1) CA1095221A (en)
DE (1) DE2903888A1 (en)
GB (1) GB2014063B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987005682A1 (en) * 1986-03-14 1987-09-24 Robert Bosch Gmbh Sheathed-element glow plug for diesel engines
GB2220446A (en) * 1988-04-06 1990-01-10 Champion Spark Plug Europ I.e. engine glow plug
EP0392181A1 (en) * 1989-04-08 1990-10-17 Robert Bosch Gmbh Glow plug
ITAN20130212A1 (en) * 2013-11-18 2015-05-19 Thermowatt Spa ELECTRIC RESISTANCE WITH MULTIPLE ISOLATION

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987005682A1 (en) * 1986-03-14 1987-09-24 Robert Bosch Gmbh Sheathed-element glow plug for diesel engines
GB2220446A (en) * 1988-04-06 1990-01-10 Champion Spark Plug Europ I.e. engine glow plug
US4963717A (en) * 1988-04-06 1990-10-16 Champion Spark Plug Europe S.A. Glow plug for internal combustion engine
AU608146B2 (en) * 1988-04-06 1991-03-21 Champion Spark Plug Europe S.A. Glow plug for internal combustion engine
GB2220446B (en) * 1988-04-06 1992-05-27 Champion Spark Plug Europ Glow plug for internal combustion engine
EP0392181A1 (en) * 1989-04-08 1990-10-17 Robert Bosch Gmbh Glow plug
ITAN20130212A1 (en) * 2013-11-18 2015-05-19 Thermowatt Spa ELECTRIC RESISTANCE WITH MULTIPLE ISOLATION

Also Published As

Publication number Publication date
AU520216B2 (en) 1982-01-21
GB2014063B (en) 1982-02-17
AU4396679A (en) 1979-08-16
CA1095221A (en) 1981-02-10
DE2903888A1 (en) 1979-08-16
JPS54117958A (en) 1979-09-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee