JPS5499207A - Controlling system for prevention from surging in blower - Google Patents

Controlling system for prevention from surging in blower

Info

Publication number
JPS5499207A
JPS5499207A JP556878A JP556878A JPS5499207A JP S5499207 A JPS5499207 A JP S5499207A JP 556878 A JP556878 A JP 556878A JP 556878 A JP556878 A JP 556878A JP S5499207 A JPS5499207 A JP S5499207A
Authority
JP
Japan
Prior art keywords
contact
blower
suction valve
opening degree
blast amount
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
JP556878A
Other languages
Japanese (ja)
Other versions
JPS5810598B2 (en
Inventor
Toshihiro Murata
Susumu Futaki
Tokuji Ota
Takeya Fukumoto
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.)
Fuji Electric Co Ltd
Nippon Steel Corp
Original Assignee
Fuji Electric Co Ltd
Nippon Steel 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 Fuji Electric Co Ltd, Nippon Steel Corp filed Critical Fuji Electric Co Ltd
Priority to JP556878A priority Critical patent/JPS5810598B2/en
Publication of JPS5499207A publication Critical patent/JPS5499207A/en
Publication of JPS5810598B2 publication Critical patent/JPS5810598B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Control Of Positive-Displacement Air Blowers (AREA)

Abstract

PURPOSE: To reduce the frequency of the operation of a suction valve to stabilize the operation for preventing surging by adjusting the opening of the suction valve by stages and giving a hysteresis of a fixed width to the set point of a blower for the switching point of a suction valve.
CONSTITUTION: When a blast amount F is between F6 and F7 in the graph, the blast amount is larger than set points F5 and F6 of a comparator 63 to set contacts H5 and H6 on. Consequently, a relay X3 is operated to set a contact a3 on, and since a switching contact C3 is closed to the side of a terminal "a", a setter 44 in an opening degree commander 4 is selected, and a blower 1 is operated by the damper opening degree 80%. When the blast amount F is further increased to surpass a set point F8 of a comparator 64, a contact H8 is on to operate a relay X4, and a contact "a4" is on to switch over a switching contact C4 to the side of "α". Then a setter 45 is selected to switch over the command of the opening degree from 80% to 100%.
COPYRIGHT: (C)1979,JPO&Japio
JP556878A 1978-01-21 1978-01-21 Blower surging prevention control device Expired JPS5810598B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP556878A JPS5810598B2 (en) 1978-01-21 1978-01-21 Blower surging prevention control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP556878A JPS5810598B2 (en) 1978-01-21 1978-01-21 Blower surging prevention control device

Publications (2)

Publication Number Publication Date
JPS5499207A true JPS5499207A (en) 1979-08-04
JPS5810598B2 JPS5810598B2 (en) 1983-02-26

Family

ID=11614807

Family Applications (1)

Application Number Title Priority Date Filing Date
JP556878A Expired JPS5810598B2 (en) 1978-01-21 1978-01-21 Blower surging prevention control device

Country Status (1)

Country Link
JP (1) JPS5810598B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56118595A (en) * 1980-02-20 1981-09-17 Nippon Steel Corp Variable-speed blower control device for prevention of surging
US4784580A (en) * 1983-07-30 1988-11-15 Mitsubishi Denki Kabushiki Kaisha Airflow control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56118595A (en) * 1980-02-20 1981-09-17 Nippon Steel Corp Variable-speed blower control device for prevention of surging
US4784580A (en) * 1983-07-30 1988-11-15 Mitsubishi Denki Kabushiki Kaisha Airflow control system

Also Published As

Publication number Publication date
JPS5810598B2 (en) 1983-02-26

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