JPS567112A - Preheat controller - Google Patents

Preheat controller

Info

Publication number
JPS567112A
JPS567112A JP8145879A JP8145879A JPS567112A JP S567112 A JPS567112 A JP S567112A JP 8145879 A JP8145879 A JP 8145879A JP 8145879 A JP8145879 A JP 8145879A JP S567112 A JPS567112 A JP S567112A
Authority
JP
Japan
Prior art keywords
level
signal
heaters
switch
frequency
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
JP8145879A
Other languages
Japanese (ja)
Inventor
Takayuki Sudo
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP8145879A priority Critical patent/JPS567112A/en
Publication of JPS567112A publication Critical patent/JPS567112A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin

Abstract

PURPOSE: To prevent the reduction of the life time for the preheated apparatus and the heaters, by connecting the heaters in series in case the ON-OFF frequency of the heater exceeds the set level and in parallel in case when the temperature of the preheated apparatus is lower than the set level respectively.
CONSTITUTION: The ON-OFF action is repeated for heaters 13 and 14 by switching electromagnetic contact unit 3. At the same time, ON-OFF frequency signal 19 is supplied to heater connection switch circuit 16 from ON-OFF circuit 15. And when the repeating frequency exceeds the prescribed level within the unit time, the level of signal 19 increases. And the contact of switch 6 is connected to the side of fig. b by switch signal 22, and the level of signal 19 is held as it is. In this connection, heaters 13 and 14 are connected in series. Under these conditions, if the signal sent from thermocouple 21 becomes less than the lower limit level 20, the level holding of signal 19 is cancelled to secure a low level. And the contact of switch 6 is connected to the side of a, and thus heaters 13 and 14 are connected in parallel.
COPYRIGHT: (C)1981,JPO&Japio
JP8145879A 1979-06-29 1979-06-29 Preheat controller Pending JPS567112A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8145879A JPS567112A (en) 1979-06-29 1979-06-29 Preheat controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8145879A JPS567112A (en) 1979-06-29 1979-06-29 Preheat controller

Publications (1)

Publication Number Publication Date
JPS567112A true JPS567112A (en) 1981-01-24

Family

ID=13746951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8145879A Pending JPS567112A (en) 1979-06-29 1979-06-29 Preheat controller

Country Status (1)

Country Link
JP (1) JPS567112A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006247491A (en) * 2005-03-09 2006-09-21 Casio Comput Co Ltd Reaction apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4419961Y1 (en) * 1964-11-09 1969-08-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4419961Y1 (en) * 1964-11-09 1969-08-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006247491A (en) * 2005-03-09 2006-09-21 Casio Comput Co Ltd Reaction apparatus

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