CN2420777Y

CN2420777Y - Micro motor with variable voltage phase-shift device

Info

Publication number: CN2420777Y
Application number: CN00233326U
Authority: CN
Inventors: 王玉成
Original assignee: MINZHENGLZHENHUA MOTOR FACTORY CHENCUN TOWN SHUNDE CITY
Current assignee: MINZHENGLZHENHUA MOTOR FACTORY CHENCUN TOWN SHUNDE CITY
Priority date: 2000-04-20
Filing date: 2000-04-20
Publication date: 2001-02-21
Anticipated expiration: 2010-04-20

Abstract

The utility model relates to a micro motor with a variable voltage phase-shift device. The utility model comprises a transformer bank, a single-phase micro motor and phase-shift capacitance, wherein, the transformer bank is composed of both sets of transformers. Output voltage of both of the two sets of transformers is respectively supplied for a main winding of the single-phase micro motor and a secondary winding of the single-phase micro motor. The phase-shift capacitance is connected in series to a primary coil circuit of a set of transformer. The primary coil circuit of a set of transformer supplies for the secondary winding of the single-phase micro motor. The phase-shift capacitance is skillfully connected in series to the primary coil circuit of the transformer to supply for the single-phase micro motor, and phase shift is implemented. Therefore, the utility model can not enlarge the volume of the capacitance, and can not raise the price of the capacitance. The utility model can be used for phase shift of various single-phase capacitance micro motors.

Description

A kind of electrical micro-machine with transformation phase shifting equipment

The utility model relates to a kind of electrical micro-machine, the single-phase electrical micro-machine of the blower fan of particularly a kind of extractor fan that is used for the forced-ventilated water heater, ventilating fan, fan.

The extractor fan of existing forced-ventilated water heater, ventilating fan, the blower fan that uses in the electric fan generally adopts the interchange monophase machine of 220V to come drives impeller, and adopt shift capacitor to supply with the master of monophase machine respectively, pay winding, but its motor volume of the blower fan of this structure is big, it is many to take up room, be unfavorable for that blower fan is at water heater, installing and using in ventilating fan or the fan, and because 220V does not belong to the safe voltage in the electrical standard, the security reliability that influence is used, at above-mentioned situation, the producer that has adopts the single-phase electrical micro-machine of the 6V-36V of safe low pressure to come drives impeller, need before motor, to install a transformer this moment, change the 220V alternating current of common use into the 6V-36V alternating current for the single-phase electrical micro-machine use of 6V-36V, but the corresponding increase of capacitance meeting of the shift capacitor in the single-phase electrical micro-machine at this moment, its recruitment is the multiple of transformer transformation ratio employed capacitance when taking advantage of former 220V, this jumbo electric capacity volume is big again, price is also expensive many, both the installation of fan was made troubles, and had increased the cost of blower fan again.

The purpose of this utility model provides that a kind of capacitance that keeps is constant, and the transformation that has that cost is low, volume is little, easy for installation claims the single phase alternating current (A.C.) of installing mutually electrical micro-machine.

The utility model comprises single-phase electrical micro-machine, shift capacitor, it is characterized in that also including transformer group, this transformer group is made up of two cover transformers, its output voltage is supplied with the main winding of single-phase electrical micro-machine respectively and is paid a winding, and shift capacitor is serially connected in and supplies with single-phase electrical micro-machine and pay in the primary coil circuit of a cover transformer of winding.

The utility model is owing to supply with the phase shift that single-phase electrical micro-machine is realized electrical micro-machine at the primary coil string dress shift capacitor of transformer dexterously, make the capacitance of shift capacitor can be the same big with the capacitance of the shift capacitor of existing 220V alternating current machine, neither can increase the volume of electric capacity, can not improve the price of electric capacity again, can be widely used in the phase shift of various single-phase capacitance electrical micro-machines, and install simple, make things convenient for, occupy little space, save cost.

Describe basic structure of the present utility model and principle in detail below in conjunction with accompanying drawing:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is an electric principle schematic of the present utility model;

As Fig. 1-shown in Figure 2, the utility model comprises single-phase electrical micro-machine 2, transformer group 4, shift capacitor 3, wherein single-phase electrical micro-machine 2 adopts the single-phase electrical micro-machine of 6V-36V alternating current, transformer group 4 is made up of two cover transformers, its output voltage is supplied with the main winding 21 of single-phase electrical micro-machine 2 respectively and is paid winding 22, and shift capacitor 3 is serially connected in the primary coil circuit of a cover transformer of supplying with 2 pairs of windings 22 of single-phase electrical micro-machine, guarantee that like this shift capacitor 3 uses in 220V alternating current environment, need not increase its capacitance, make things convenient for its installation and reduce cost, on the output main shaft of single-phase electrical micro-machine 2 impeller is installed.

Claims

1, a kind of electrical micro-machine with transformation phase shifting equipment, comprise single-phase electrical micro-machine (2), shift capacitor (3), it is characterized in that also including transformer group (4), this transformer group (4) is made up of two cover transformers, its output voltage is supplied with the main winding (21) of single-phase electrical micro-machine (2) respectively and is paid winding (22), and shift capacitor (3) is serially connected in the primary coil circuit of a cover transformer of supplying with single-phase electrical micro-machine (2) pair winding (22).