JPS6481695A - Fan unit - Google Patents

Fan unit

Info

Publication number
JPS6481695A
JPS6481695A JP62236342A JP23634287A JPS6481695A JP S6481695 A JPS6481695 A JP S6481695A JP 62236342 A JP62236342 A JP 62236342A JP 23634287 A JP23634287 A JP 23634287A JP S6481695 A JPS6481695 A JP S6481695A
Authority
JP
Japan
Prior art keywords
fan
rotating speed
trouble
signal
speed control
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
JP62236342A
Other languages
Japanese (ja)
Other versions
JP2529977B2 (en
Inventor
Nobuaki Sugiura
Osamu Ibaraki
Yasuo Kaneko
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP62236342A priority Critical patent/JP2529977B2/en
Publication of JPS6481695A publication Critical patent/JPS6481695A/en
Application granted granted Critical
Publication of JP2529977B2 publication Critical patent/JP2529977B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Control Of Multiple Motors (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Safety Devices In Control Systems (AREA)
  • Control Of Temperature (AREA)

Abstract

PURPOSE:To reduce noise by low speed operation in normalcy and to lengthen the service life of a fan, by increasing the rotating speed of the other regular fans in case a fan is out of order, and by keeping its desired cooling capacity. CONSTITUTION:Among the rpm-variable fans 1a,...1b of a fan unit, when the rotating speed of a fan 1a is reduced or its rotation is stopped, a display 9 to indicate the trouble is lighted by a rotating speed trouble detector 3a and a trouble alarm signal 4a is sounded and transmitted to a monitoring circuit 5, from where a control signal 6 is sent out to a rotating speed control circuit 7. On receiving this signal 6, the rotating speed control circuit 7 strikes out a rotating speed control signal 8b to a fan driving power source 2b so that the power to cause high speed rotation may be supplied to a fan 1b.
JP62236342A 1987-09-22 1987-09-22 Fan unit Expired - Lifetime JP2529977B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62236342A JP2529977B2 (en) 1987-09-22 1987-09-22 Fan unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62236342A JP2529977B2 (en) 1987-09-22 1987-09-22 Fan unit

Publications (2)

Publication Number Publication Date
JPS6481695A true JPS6481695A (en) 1989-03-27
JP2529977B2 JP2529977B2 (en) 1996-09-04

Family

ID=16999390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62236342A Expired - Lifetime JP2529977B2 (en) 1987-09-22 1987-09-22 Fan unit

Country Status (1)

Country Link
JP (1) JP2529977B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0391996A (en) * 1989-09-04 1991-04-17 Nec Corp Cooling structure of communication device case
JP2006230121A (en) * 2005-02-18 2006-08-31 Nidec Sankyo Corp Fan motor driver/controller
WO2008143231A1 (en) * 2007-05-22 2008-11-27 Daikin Industries, Ltd. Fan control system and air conditioner having the same
JP2020080624A (en) * 2018-11-14 2020-05-28 愛知電機株式会社 Power conversion device and cooling method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0391996A (en) * 1989-09-04 1991-04-17 Nec Corp Cooling structure of communication device case
JP2006230121A (en) * 2005-02-18 2006-08-31 Nidec Sankyo Corp Fan motor driver/controller
WO2008143231A1 (en) * 2007-05-22 2008-11-27 Daikin Industries, Ltd. Fan control system and air conditioner having the same
JP2008291656A (en) * 2007-05-22 2008-12-04 Daikin Ind Ltd Fan control system and air conditioning machine provided with fan control system thereof
US8773048B2 (en) 2007-05-22 2014-07-08 Daikin Industries, Ltd. Fan control system and air conditioner that includes the same
US8801390B2 (en) 2007-05-22 2014-08-12 Daikin Industries, Ltd. Fan control system and air conditioner that includes the same
JP2020080624A (en) * 2018-11-14 2020-05-28 愛知電機株式会社 Power conversion device and cooling method thereof

Also Published As

Publication number Publication date
JP2529977B2 (en) 1996-09-04

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