CN2340121Y

CN2340121Y - External-speed-regulating single-phase-capacitor runnig asynchronous electric motor for fan of air-conditioner

Info

Publication number: CN2340121Y
Application number: CN98206854U
Authority: CN
Inventors: 张元方
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-07-15
Filing date: 1998-07-15
Publication date: 1999-09-22
Anticipated expiration: 2008-07-15

Abstract

The utility model relates to an asynchronous motor, particularly an asynchronous motor with external speed regulation and single-phase capacitor for the fan of the air-container. The utility model is characterized in that the built-in thermostat of the motor is connected with the phase wire side of the winding of the motor. The utility model effectively avoids that the winding of the motor is broken down and the motor is overheated and burnt out. The utility model has the advantages of reliable operation, high efficiency, parallel operation realize, and simple manufacturing technology.

Description

Air-conditioning fan is with outer speed governing single-phase capacitor operation asyn. motor

The utility model relates to asynchronous motor, and particularly a kind of air-conditioning fan is with outer speed governing single-phase capacitor operation asyn. motor.

Present air-conditioning fan single-phase capacitor operation asyn. motor; all adopt the method for motor coil three tap speed governing; the built-in thermostat (or thermal cut-off) of motor is connected on the ground wire side; cause ground short circuit not have any protective effect for the modal winding insulation partial breakdown of motor like this; and have and burn motor; thereby initiation fire, result in greater loss.

In view of this; how can effectively protect motor to avoid winding to puncture and burn motor; but and still can make motor have the function of external control speed governing; and it is simple in structure; therefore under the situation that can't increase on the cost; just can bring great safety in utilization, the machine operation reliability that increases substantially, this novel wound motivation place of grinding just.

The utility model designer, does a brand-new design and constitutes on the basis of feasibility study repeatedly by means of being engaged in the practical experience that each type electric tool is researched and produced processing and other fields for many years, gets this novel generation eventually.

At the deficiencies in the prior art, this novel purpose is a kind of structure that can effectively protect air-conditioning fan to avoid winding to puncture with outer speed governing single-phase capacitor operation asyn. motor and cause motor to be burnt of design.

The purpose of this utility model is achieved in that the internal motor thermostat that is characterised in that of the present utility model is connected on the phase line side of motor winding.

The electronic function of Lian Jieing effectively avoids the motor winding breakdown and cause the overheated motor that burns of electric poplar in the manner described above.

Further illustrate the utility model below in conjunction with accompanying drawing,

Fig. 1 is the utility model structure chart.

Thermostat G of the present utility model is connected motor phase line side L, it is to pass through winding B1 or B2 and capacitor C just to be connected with ground wire N, in case like this winding puncture and with the ground short circuit, motor overheating makes thermostat effectively to detect this variation and disconnects, avoid motor to be burnt, also avoid other losses such as fire that may cause therefrom.

The utility model also can make the speed governing of motor realize speed governing by the mode that winding three taps change the control supply voltage into, can help motor and connect use, tap voltage is inconsistent when avoiding three tap parallel operation, tap and joint conference produce the dangerous circulation of meeting, easily burn motor, and compromise all motors in parallel; The supply voltage speed governing also helps efficient and improves, electric machine temperature rise is high and cause electric capacity to be in permanent hot operation state when avoiding three tap taps to cause low speed, make electric capacity may therefore cause early failure, the supply voltage speed governing makes motor manufacturing technology become more or less freely, avoids the complexity of three taps on technology is made.

This is novel to have simple in structurely really, uses reliably, and efficient improves, and manufacturing process is simple.

In sum, basis is novel can utilize simple structural design, uses this novel product can increase substantially functional reliability, easy to use.Obviously originally novel is the new design of a kind of novelty, progress and dark tool practicality.The above is this novel specific embodiment and the know-why of being used, the equivalence that the novel conception of Ruo Yiben is done changes, when the function that it produced does not exceed spiritual that specification and accompanying drawing contain yet, all should be in this novel scope, explanation hereby.

Claims

1, a kind of air-conditioning fan is characterized in that with outer speed governing single-phase capacitor operation asyn. motor the internal motor thermostat is connected on the phase line side of motor winding.