JPS54123750A - Sheathed heater - Google Patents

Sheathed heater

Info

Publication number
JPS54123750A
JPS54123750A JP3138978A JP3138978A JPS54123750A JP S54123750 A JPS54123750 A JP S54123750A JP 3138978 A JP3138978 A JP 3138978A JP 3138978 A JP3138978 A JP 3138978A JP S54123750 A JPS54123750 A JP S54123750A
Authority
JP
Japan
Prior art keywords
sheathed heater
manganese dioxide
insulation
heater
magnesia
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.)
Pending
Application number
JP3138978A
Other languages
Japanese (ja)
Inventor
Masakazu Tanahashi
Hisaaki Okada
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP3138978A priority Critical patent/JPS54123750A/en
Publication of JPS54123750A publication Critical patent/JPS54123750A/en
Pending legal-status Critical Current

Links

Landscapes

  • Resistance Heating (AREA)

Abstract

PURPOSE: To prevent deterioration of insulation even when a sheathed heater is used at high temperature by using a mixture of magnesia and manganese dioxide as the insulation filler for the sheathed heater.
CONSTITUTION: A mixture of magnesia and manganese dioxide is used as the insulator for a sheathed heater. When the sheathed heater is heated at high temperature, manganese dioxide dissociates to generate oxygen so that an oxide layer is always formed on the surfaces of the sheathed heater even when the heater is completely sealed. Thus deterioration of insulation is prevented.
COPYRIGHT: (C)1979,JPO&Japio
JP3138978A 1978-03-17 1978-03-17 Sheathed heater Pending JPS54123750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3138978A JPS54123750A (en) 1978-03-17 1978-03-17 Sheathed heater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3138978A JPS54123750A (en) 1978-03-17 1978-03-17 Sheathed heater

Publications (1)

Publication Number Publication Date
JPS54123750A true JPS54123750A (en) 1979-09-26

Family

ID=12329899

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3138978A Pending JPS54123750A (en) 1978-03-17 1978-03-17 Sheathed heater

Country Status (1)

Country Link
JP (1) JPS54123750A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120217233A1 (en) * 2011-02-28 2012-08-30 Tom Richards, Inc. Ptc controlled environment heater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120217233A1 (en) * 2011-02-28 2012-08-30 Tom Richards, Inc. Ptc controlled environment heater

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