JPS57136221A - Speed controller for boiler ventilator - Google Patents

Speed controller for boiler ventilator

Info

Publication number
JPS57136221A
JPS57136221A JP56020930A JP2093081A JPS57136221A JP S57136221 A JPS57136221 A JP S57136221A JP 56020930 A JP56020930 A JP 56020930A JP 2093081 A JP2093081 A JP 2093081A JP S57136221 A JPS57136221 A JP S57136221A
Authority
JP
Japan
Prior art keywords
rotations
air flow
motor
damper
opening
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
JP56020930A
Other languages
Japanese (ja)
Inventor
Minoru Ebara
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 JP56020930A priority Critical patent/JPS57136221A/en
Publication of JPS57136221A publication Critical patent/JPS57136221A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/0016—Control of angular speed of one shaft without controlling the prime mover

Abstract

PURPOSE:To eliminate the fluctuation of air flow when switching is carried out between an inverter device and a commercial power supply, by monitoring the number of rotations of a motor during the switching of the power supply and obtaining the opening of a damper through an arithmetic circuit according to the number of rotations of the motor to control the air flow. CONSTITUTION:The input current value of a motor 6 is detected by a current transformer 18, and the speed variation factor of a ventilator 5 is calculated by a speed variation factor arithmetic circuit 19 and based on the load supplied previously, the value of the flywheel effect GD<2> of the motor 6 and the resistance curve 4 of an air pipe 4. A arithmetic 20 of the number of rotations is carried out based on the output of the circuit 19, and an arithmetic circuit 21 of the number of rotations performs a prescribed damper opening operation from the relation between the damper opening given previously and the air flow and based on the rotational frequency signal. The signal given from the circuit 21 is supplied to an air flow controller 9, and the opening of a damper 7 is controlled by a cylinder 8.
JP56020930A 1981-02-17 1981-02-17 Speed controller for boiler ventilator Pending JPS57136221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56020930A JPS57136221A (en) 1981-02-17 1981-02-17 Speed controller for boiler ventilator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56020930A JPS57136221A (en) 1981-02-17 1981-02-17 Speed controller for boiler ventilator

Publications (1)

Publication Number Publication Date
JPS57136221A true JPS57136221A (en) 1982-08-23

Family

ID=12040928

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56020930A Pending JPS57136221A (en) 1981-02-17 1981-02-17 Speed controller for boiler ventilator

Country Status (1)

Country Link
JP (1) JPS57136221A (en)

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