CH98707A - Portable centrifugal fan driven by an electric motor. - Google Patents
Portable centrifugal fan driven by an electric motor.Info
- Publication number
- CH98707A CH98707A CH98707DA CH98707A CH 98707 A CH98707 A CH 98707A CH 98707D A CH98707D A CH 98707DA CH 98707 A CH98707 A CH 98707A
- Authority
- CH
- Switzerland
- Prior art keywords
- electric motor
- centrifugal fan
- fan
- fan driven
- portable centrifugal
- Prior art date
Links
- 238000010438 heat treatment Methods 0.000 claims description 4
- 230000007423 decrease Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/70—Safety, emergency conditions or requirements
- F04C2270/72—Safety, emergency conditions or requirements preventing reverse rotation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Elektromotorisch angetriebenes, transportables Kreiselgebläse. Bei der Verwendung von elektromotorisch angetriebenen, transportablen Kreiselgeblä- sen zur Speisung von elektrischen Lufterhit- zungsöfen ist es erwünscht, neben einer Vor richtung, .die bei verkehrter Drehrichtung des Gebläses den Antriebsmotor selbsttätig still setzt, auch noch eine Schutzvorrichtung vor zusehen, die bei einer bestimmten Drehzahl des Gebläses den elektrischen Heizstromkreis von sich aus einschaltet, dagegen letzteren abschaltet,
wenn aus irgend einem Grunde gar keine oder nur ungenügend Luft durch den Ofen ,getrieben wird. Zu diesem Zweck besitzt das den Gegenstand vorliegender Er findung bildende Kreiselgebläse einen Zen trifugalschalter, der in Abhängigkeit der Ge- bläsedrehzahl den Ofen selbsttätig zu- und abschaltet, wie die beiliegende schematische Zeichnung anhand des im Hauptpatent be schriebenen Ausführungsbeispiels zeigt.
Dazu trägt die Motor- und Gebläsewelle einen Fliehkraftregler R', der bei einer be stimmten Drehzahl des Gebläses G durch ein Gestänge 0'.den Schalter S' betätigt, wodurch .der Ofen H .an das Netz angeschlossen wird, falls der Motor M in der .durch den Dreh richtungsregler R bestimmten Richtung läuft, bei der das Gebläse G Luft in den Ofen H schöpfen soll.
Nimmt die Gebläseleistung in folge Sinkens der Gebläsedrehzahl ab, so stellt der Regler R' .das Gestänge 0' zurück, so .dass die gespannte Feder F' den Schalter S' in die Ausschaltstellung zurückzieht. Der Motorstromschalter S und der Heizstrom sehalter S' können auch zu einer Schaltvor richtung vereinigt sein.
Portable centrifugal fan driven by an electric motor. When using an electric motor-driven, portable centrifugal fan to feed electric air heating ovens, it is desirable to have a protective device in addition to a device that automatically stops the drive motor when the fan rotates in the wrong direction certain speed of the fan switches on the electrical heating circuit by itself, but switches off the latter,
if for some reason no or insufficient air is forced through the furnace. For this purpose, the subject of the present invention He has forming centrifugal fan a centrifugal switch that automatically switches the furnace on and off depending on the fan speed, as the accompanying schematic drawing based on the embodiment described in the main patent shows.
For this purpose, the motor and fan shaft have a centrifugal governor R 'which, at a certain speed of the fan G, actuates the switch S' through a linkage 0 ', whereby the furnace H is connected to the mains if the motor M the direction determined by the direction of rotation controller R runs, in which the fan G is to scoop air into the oven H.
If the blower output decreases as a result of a drop in the blower speed, the controller R 'resets the linkage 0' so that the tensioned spring F 'pulls the switch S' back into the off position. The motor current switch S and the heating current sehalter S 'can also be combined into a switching device.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH98707T | 1921-12-06 | ||
| CH95885T | 1921-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH98707A true CH98707A (en) | 1923-04-16 |
Family
ID=25705026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH98707D CH98707A (en) | 1921-12-06 | 1921-12-06 | Portable centrifugal fan driven by an electric motor. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH98707A (en) |
-
1921
- 1921-12-06 CH CH98707D patent/CH98707A/en unknown
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