JPS6288264U - - Google Patents
Info
- Publication number
- JPS6288264U JPS6288264U JP1985180001U JP18000185U JPS6288264U JP S6288264 U JPS6288264 U JP S6288264U JP 1985180001 U JP1985180001 U JP 1985180001U JP 18000185 U JP18000185 U JP 18000185U JP S6288264 U JPS6288264 U JP S6288264U
- Authority
- JP
- Japan
- Prior art keywords
- cooling fan
- magnet
- electric motor
- reed switch
- heat exchanger
- 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
- 238000001816 cooling Methods 0.000 claims description 8
- 235000014676 Phragmites communis Nutrition 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Transformer Cooling (AREA)
- Control Of Electric Motors In General (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Description
第１図はこの考案の実施例を示す正面図、第２
図は上記実施例における側断面図、第３図は上記
実施例におけるリードスイツチの出力波形を示す
図、第４図は風冷式熱交換器の側面図、第５図は
従来の保護装置を示す回路図、第６図はサーマル
リレーの動作特性図、第７図は電動機電流と回転
数との関係を示す図である。
図において、１……冷却扇、２……冷却扇駆動
用電動機、３……冷却扇箱、３Ａ……冷却扇ベル
マウス、１１……マグネツト、１２……リードス
イツチ、１３……判定器。なお、図中、同一符号
は同一または相当部分を示す。
Figure 1 is a front view showing an embodiment of this invention, Figure 2 is a front view showing an embodiment of this invention.
The figure is a side sectional view of the above embodiment, Fig. 3 is a diagram showing the output waveform of the reed switch in the above embodiment, Fig. 4 is a side view of the air-cooled heat exchanger, and Fig. 5 is a diagram showing the conventional protection device. FIG. 6 is a diagram showing the operating characteristics of the thermal relay, and FIG. 7 is a diagram showing the relationship between motor current and rotation speed. In the figure, 1...cooling fan, 2...cooling fan driving motor, 3...cooling fan box, 3A...cooling fan bell mouth, 11...magnet, 12...reed switch, 13...determiner. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
運転される電動機により駆動される冷却扇の外周
部に固着されたマグネツト、上記冷却扇箱の冷却
扇ベルマウス内周部に固着され上記マグネツトに
より開閉制御されるリードスイツチ、該リードス
イツチの出力が導かれる判定器を有し、該判定器
に入力される上記出力が特定波形である場合に上
記電動機が給電されていることを条件として上記
電動機の保護動作要求信号を送出することを特徴
とする風冷式熱交換器の保護装置。 A magnet is fixed to the outer periphery of a cooling fan that is housed in a cooling fan box of an air-cooled heat exchanger and is driven by a variable-speed electric motor, and a magnet is fixed to the inner periphery of the cooling fan bell mouth of the cooling fan box. A reed switch whose opening and closing are controlled by the magnet, and a determining device to which the output of the reed switch is guided, and the condition is that the electric motor is being supplied with power when the output input to the determining device has a specific waveform. A protection device for an air-cooled heat exchanger, characterized in that it sends out a protection operation request signal for the electric motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985180001U JPS6288264U (en) | 1985-11-22 | 1985-11-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985180001U JPS6288264U (en) | 1985-11-22 | 1985-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6288264U true JPS6288264U (en) | 1987-06-05 |
Family
ID=31123557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985180001U Pending JPS6288264U (en) | 1985-11-22 | 1985-11-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6288264U (en) |
-
1985
- 1985-11-22 JP JP1985180001U patent/JPS6288264U/ja active Pending