JPS56145410A - Proportional control system for gas - Google Patents

Proportional control system for gas

Info

Publication number
JPS56145410A
JPS56145410A JP4759980A JP4759980A JPS56145410A JP S56145410 A JPS56145410 A JP S56145410A JP 4759980 A JP4759980 A JP 4759980A JP 4759980 A JP4759980 A JP 4759980A JP S56145410 A JPS56145410 A JP S56145410A
Authority
JP
Japan
Prior art keywords
current
gas
control
setting part
valve
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
JP4759980A
Other languages
Japanese (ja)
Inventor
Masafumi Kameda
Kazuo Okamura
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.)
Mikuni Corp
YOUEI SEISAKUSHO KK
Original Assignee
Mikuni Corp
YOUEI SEISAKUSHO KK
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 Mikuni Corp, YOUEI SEISAKUSHO KK filed Critical Mikuni Corp
Priority to JP4759980A priority Critical patent/JPS56145410A/en
Publication of JPS56145410A publication Critical patent/JPS56145410A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Magnetically Actuated Valves (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Flow Control (AREA)

Abstract

PURPOSE:To exercise proportional control over a flow rate of gas smoothly by a proportional gas control system which changes ranges of control current according to the kind of gas, by varying the control current for a solenoid from starting current to maximum energizing current while keeping the diameter of a valve constant. CONSTITUTION:To temperature setting part 11, temperature detection part 12, linear amplification part 13, control part 14, drive output part 15, feedback signal circuit 16, and proportional control valve 17, starting current setting part 18 and maximum energizing current setting part 19 are added. Then, setting part 18 applies a DC bias to a signal system as shown in fig. M to prevent the current flowing through valve 17 from decreasing below the starting current even if the signal level reaches ''0''. To setting part 19, a means of cutting the current at the level, equivalent to the maximum energizing current of a control signal level, for example, by a clipping circuit using a Zener diode is applicable. Then, while the diameter of a gas valve is kept constant, the control current for the solenoid is varied from the starting current to the maximum energizing current to exercise the proportional control over a flow rate of gas smoothly without reference to the kind of the gas.
JP4759980A 1980-04-11 1980-04-11 Proportional control system for gas Pending JPS56145410A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4759980A JPS56145410A (en) 1980-04-11 1980-04-11 Proportional control system for gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4759980A JPS56145410A (en) 1980-04-11 1980-04-11 Proportional control system for gas

Publications (1)

Publication Number Publication Date
JPS56145410A true JPS56145410A (en) 1981-11-12

Family

ID=12779699

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4759980A Pending JPS56145410A (en) 1980-04-11 1980-04-11 Proportional control system for gas

Country Status (1)

Country Link
JP (1) JPS56145410A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096827A (en) * 1983-10-31 1985-05-30 Rinnai Corp Combustion control circuit
US10100938B2 (en) 2008-12-08 2018-10-16 Robertshaw Controls Company Variable flow gas valve and method for controlling same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6096827A (en) * 1983-10-31 1985-05-30 Rinnai Corp Combustion control circuit
JPS6237291B2 (en) * 1983-10-31 1987-08-12 Rinnai Kk
US10100938B2 (en) 2008-12-08 2018-10-16 Robertshaw Controls Company Variable flow gas valve and method for controlling same

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