JPS58163292A - Motor with voltage changed over tapping - Google Patents

Abstract

PURPOSE:To equalize the reduction rate of speed at different voltage of two kinds by changing over winding in series-parallel while changing over speed regulating taps. CONSTITUTION:When the motor is operated at 100V, a connector 8 for low voltage and a switching connector 10 are inserted and connected. In this case, main coils 1, 1' are connected in parallel and the induction motor is operated at 100V, and a speed regulating switch 11 is changed over, thus changing over speed to strong, medium or weak. When the motor is operated at 200V, on the other hand, a connector 9 for high voltage and the switching connector 10 are inserted and conected. The main coils 1, 1' are connected in series and the induction motor is operated at 200V at that time. The reduction rate of speed regulation the same as that in case of 100V is obtained by connecting the medium and weak terminals 13, 14 of the speed changeover switch 11 to the taps 6, 7 on the speed side lower than speed in case of 100V.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a voltage switching induction motor used in electric fans, etc., which can be used with power sources having two different voltages by switching coils in series and parallel. The purpose of this invention is to make the rate of decrease in rotational speed due to speed adjustment to be approximately the same under two types of voltage.

For example, in a conventional induction motor with voltage switching, the power supply voltage is 100
v and 200V, the main coil is 1 as shown in Figure 1.
Divide into 01 and 102, 1o.

A V connector 103 and a 200V connector 104 are provided, and when the power supply is 100V, the switching connector 106 is connected to the 100V connector 103, and the main coils 101 and 102 are connected in parallel. If the changeover connector 1
05 to the 200v connector 104, and the main coil 10
1 and 102 are connected in series to be able to deal with two types of voltage, but when the speed adjustment tap drawn out from the auxiliary coil 106 is switched by the speed adjustment switch 107, the rate of speed decrease is At 200V, it becomes very bad, and when used in an electric fan, etc., it has the disadvantage of causing a decline in quality.

The present invention solves the above-mentioned conventional drawbacks, and an embodiment thereof will be described below based on FIG. 2.

In the figure, 1 and 1' are the main coils of an induction motor divided into two equal parts, 2 is an auxiliary coil, and the auxiliary coil 2 is provided with taps 3, 4, 5, 6°7 for speed adjustment. There is. 8 is a low voltage connector, 9 is a high voltage connector, and 1o is a switching connector.When the power supply is operated at 100V, the switching connector 10 is connected to the low voltage connector 8, and when the power supply is 200V.
When operating at
The shape is asymmetrical and can only be connected in a certain direction.

In addition, the four connection terminals of the low voltage connector 8 are provided with speed adjustment taps 6, 4, and 6 provided on the auxiliary coil 2, respectively, as shown in the figure. The winding start lead wire 17 of the main coil 1, one end of the power supply, the speed adjustment tap 3 and the speed adjustment switch 11
A strong notch terminal 12 is connected. Similarly, the four connection terminals of the high voltage connector 9 have speed adjustment taps 6.7.
are connected, and the remaining two terminals are short-circuited with lead wires. The four connection terminals of the switching connector 1o have the speed %u
Middle notch terminal 13 of switch 11, weak notch terminal 14,
The winding start lead wire 16 of the main coil 1' extends. A capacitor 18 is connected to one end of the auxiliary coil 2 and the winding start lead wire 16 of the main coil 11.

Since it is configured as described above, when operating at 100V, by connecting the low voltage connector 8 and the switching connector 10, the speed adjustment switch 11 is turned on.

The middle 9 weak terminals 12, 13.14 are connected to the speed adjustment taps 3, 4.5 provided on the auxiliary coil 2, respectively, and are connected to the main coil 10 winding start lead wire 17 and the winding start lead wire 16 of the main coil 1'. and one end of the power supply is connected, and the main coil 1
The winding end lead wire 16, the speed adjustment tap 3, and the other end of the power supply are connected.

That is, the main coils 1 and 1' are connected in parallel, and the induction motor operates at 1 ooV, and by switching the speed adjustment switch 11, the speed can be switched between high, medium and 2 low.

On the other hand, when operating at 200v, if you connect the high voltage connector 9 and the switching connector 10, the speed adjustment switch 11
The strong and middle 9 weak terminals 12, 13 and 14 are provided in the auxiliary coil 2, respectively. The winding start lead wire 15 of the main coil 11 is connected to the winding end lead wire 16 of the main coil 11. Further, the lead wire 17 at the beginning of the 10th winding of the main coil is connected to one end of the power source, and the speed adjustment tap 3 and the other end of the power source are connected. That is, the main coils 1 and 11 are connected in series, and the induction motor operates at 200V. Also, inside the speed selector switch 11, the inner terminal 13
．． 14, as mentioned above, by connecting to the tap 6.7 on the lower speed side than in the case of 100V, it is possible to obtain the same drop rate of speed adjustment as in the case of 100V.

In the above embodiment, the rated voltage is 1oOv class, 2oOv class,
Although it is assumed to be 0OV class, it is important to consider that it can be applied to two different voltages.

According to the present invention, as a result of switching the speed adjustment tap at the same time as switching the windings in series and parallel,
This exhibits the effect of making the rate of speed drop to the same degree for two types of different voltages.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of a conventional induction motor, and FIG. 2 is a circuit diagram of an induction motor according to an embodiment of the present invention. 1.11... Main coil, 2... River/auxiliary coil, 3° 4.5, 6.7... Tap for speed adjustment, 81111. . Low voltage connector, 9...High voltage connector, 1o
・・・・・・Switching connector.

Claims (1)

[Claims] The main coil is divided into two parts, and when the power supply voltage is low, the main coil is connected in parallel via a low voltage connector, and when the power supply voltage is high, the main coil is connected in series via a high voltage connector. An auxiliary coil is provided with a plurality of taps for speed adjustment, and these taps are made independent for high voltage and low voltage, and each tap is connected to a low voltage connector and a high voltage connector. A motor with a voltage switch that connects to a connector and allows speed adjustment by switching the tap for speed adjustment at the same time as changing the voltage.