JPS57191482A - Apparatus for controlling speed of revolution of fan - Google Patents

Apparatus for controlling speed of revolution of fan

Info

Publication number
JPS57191482A
JPS57191482A JP56074177A JP7417781A JPS57191482A JP S57191482 A JPS57191482 A JP S57191482A JP 56074177 A JP56074177 A JP 56074177A JP 7417781 A JP7417781 A JP 7417781A JP S57191482 A JPS57191482 A JP S57191482A
Authority
JP
Japan
Prior art keywords
speed
controlling
fan
clutch
low
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
JP56074177A
Other languages
Japanese (ja)
Inventor
Tatsuaki Suzuki
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.)
NIIGATA CONVERTER KK
Original Assignee
NIIGATA CONVERTER 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 NIIGATA CONVERTER KK filed Critical NIIGATA CONVERTER KK
Priority to JP56074177A priority Critical patent/JPS57191482A/en
Publication of JPS57191482A publication Critical patent/JPS57191482A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE:To enable to control deceleration of a fan in a safe, reliable and prompt manner even at the time of low-speed or low-load operation of the same, by employing a brake clutch as well as a means like an electric circuit for controlling the speed of revolution of the fan in addition to a conventional system utilizing a slipping clutch. CONSTITUTION:The apparatus of this invention comprises an electric circuit controlling section B which is operated in response to a speed instruction signal and signals representing the oil temperature of a brake clutch 2c and speeds of an input and an output turning shafts in a main control section A that is adapted for directly controlling the turning shaft of a motor 1, controls a revolutional speed controlling valve 2e of a slipping clutch 2b and a deceleration controlling valve 2f of the brake clutch 2c, and finally controls an output turning shaft 1b via the clutches. Here, the revolutional speed controlling valve 2e for controlling the pressure of work oil supplied to a centrifugal control valve (not shown) of the slipping clutch 2b is operated in response to the speed instruction signal applied to a terminal 12. Further, arrangement is such that a brake signal producing circuit 5 produces a brake signal only when the speed instruction signal gives a decelerating instruction. With such an arrangement, it is enabled to control deceleration of the fan in a prompt and reliable manner even at the time of low-speed or low-load operation of the fan.
JP56074177A 1981-05-19 1981-05-19 Apparatus for controlling speed of revolution of fan Pending JPS57191482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56074177A JPS57191482A (en) 1981-05-19 1981-05-19 Apparatus for controlling speed of revolution of fan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56074177A JPS57191482A (en) 1981-05-19 1981-05-19 Apparatus for controlling speed of revolution of fan

Publications (1)

Publication Number Publication Date
JPS57191482A true JPS57191482A (en) 1982-11-25

Family

ID=13539616

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56074177A Pending JPS57191482A (en) 1981-05-19 1981-05-19 Apparatus for controlling speed of revolution of fan

Country Status (1)

Country Link
JP (1) JPS57191482A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS608496U (en) * 1983-06-29 1985-01-21 新潟コンバ−タ−株式会社 Blower flow control device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS608496U (en) * 1983-06-29 1985-01-21 新潟コンバ−タ−株式会社 Blower flow control device

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