JPH0430440U - - Google Patents
Info
- Publication number
- JPH0430440U JPH0430440U JP7159990U JP7159990U JPH0430440U JP H0430440 U JPH0430440 U JP H0430440U JP 7159990 U JP7159990 U JP 7159990U JP 7159990 U JP7159990 U JP 7159990U JP H0430440 U JPH0430440 U JP H0430440U
- Authority
- JP
- Japan
- Prior art keywords
- fan motor
- resonant tube
- fan
- microphone
- resonates
- 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
Links
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例の一部切欠正面図、
第２図はフアンモータの一部切欠正面図、第３，
４図は本考案により異音測定した周波数特性の図
である。
１……共鳴筒、２……計測用マイクロフオン、
３……フアンモータ。
FIG. 1 is a partially cutaway front view of an embodiment of the present invention.
Figure 2 is a partially cutaway front view of the fan motor;
FIG. 4 is a diagram of frequency characteristics measured for abnormal noise according to the present invention. 1... Resonance tube, 2... Measurement microphone,
3...Fan motor.
Claims (1)
の周波数で共鳴する共鳴筒を装着し、この共鳴筒
開口部をフアンモータに向けて装置してなるフア
ンモータの異音検出装置。 An abnormal noise detection device for a fan motor, in which a resonant tube that resonates at a frequency that is an integral multiple of the fan rotation speed is attached to the tip of a microphone, and the opening of the resonant tube is directed toward the fan motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7159990U JPH0430440U (en) | 1990-07-05 | 1990-07-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7159990U JPH0430440U (en) | 1990-07-05 | 1990-07-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0430440U true JPH0430440U (en) | 1992-03-11 |
Family
ID=31608777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7159990U Pending JPH0430440U (en) | 1990-07-05 | 1990-07-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0430440U (en) |
-
1990
- 1990-07-05 JP JP7159990U patent/JPH0430440U/ja active Pending