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Synchronous motor, particularly for an aquarium pump

A technology for synchronous motors and aquariums, applied in the direction of pumps, pump devices, electrical components, etc., can solve the problems of unsuitable use, easy failure of mechanical starting devices, etc., and achieve the effect of simplifying installation, avoiding unbalance, and simple mechanical structure

Inactive Publication Date: 2006-09-06
TUNZE AQUARIENTECHN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But such mechanical starters are prone to failure and are not suitable for use in conditions where contamination must be a concern, e.g. in aquariums

Method used

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  • Synchronous motor, particularly for an aquarium pump
  • Synchronous motor, particularly for an aquarium pump
  • Synchronous motor, particularly for an aquarium pump

Examples

Experimental program
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Embodiment Construction

[0026] In FIG. 1 , a propeller pump is indicated generally at 10 , which is arranged in a volume 12 of aquarium water, which is only schematically shown. The propeller pump 10 draws water from the water volume 12 in the direction of arrow 14 and re-delivers the water in the direction of arrow 16 to the aquarium.

[0027] The propeller pump 10 has a housing indicated generally at 18 which is divided into a pump housing 20 and a motor housing 22 .

[0028] A stator 24 is arranged in the motor housing 22 and has a laminated core 26 and a field coil 28 .

[0029] Lamination stack 26 has apertures 30 that receive divider buckets 32 . A rotor 34 made of a permanently magnetic material, which can have, for example, a plurality of magnetic poles distributed in the circumferential direction, is arranged with radial gaps in the partition 32 .

[0030] When a signal is applied to the excitation coil 28 by an external AC power source not shown, the rotor 34 starts to rotate in the alter...

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Abstract

In a propeller pump for an aquarium, starting-up of the rotor in the correct direction of rotation is guaranteed through the fact that a unit, which is formed by the propeller and the rotor of the pump, is disposed on a spindle in an axially displaceable and rotatable manner. If starting-up occurs in the wrong direction, said unit, and thereby the rotor, is drawn axially out of the magnetic field of the stator until the magnetic coupling between said stator and said rotor is no longer sufficient for further driving in the angular direction. The unit formed by the rotor and the propeller is then drawn back into the stator again by axial magnetic components of force, where a fresh opportunity of starting up again is imparted to it. It is guaranteed that the rotor will revolve in the correct direction after, at the latest, a few attempts at starting up.

Description

technical field [0001] The invention relates to a synchronous motor, in particular for an aquarium pump, according to the preamble of claim 1 . Background technique [0002] Synchronous motors are often used for applications in which a robust and trouble-free construction of the motor as well as low-noise operation of the motor are important. Typical fields of application for motors of this type are drive motors for aquarium pumps. [0003] It is known with synchronous machines that the direction of travel of the machine starting from standstill is not easily predeterminable. Depending on the relative position of the rotor to the stator, the motor starts in one or the other direction of rotation when the supply voltage is switched on. For applications in which the electric motor has to be started in a defined direction of rotation, mechanical starting devices are known which produce, for example, a small starting movement of the rotor in the correct direction of rotation. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/118
CPCF04D13/021H02K7/125F04D13/064H02K7/1185F04D13/0606
Inventor A·通泽C·胡格
Owner TUNZE AQUARIENTECHN
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