JPS6481695A - Fan unit - Google Patents
Fan unitInfo
- 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
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.
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)
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 |
-
1987
- 1987-09-22 JP JP62236342A patent/JP2529977B2/en not_active Expired - Lifetime
Cited By (7)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080614 Year of fee payment: 12 |