JPS5499207A - Controlling system for prevention from surging in blower - Google Patents
Controlling system for prevention from surging in blowerInfo
- 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
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
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)
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 |
-
1978
- 1978-01-21 JP JP556878A patent/JPS5810598B2/en not_active Expired
Cited By (2)
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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