JPS5910194A - Condenser motor - Google Patents

Abstract

PURPOSE:To enable to arbitrarily control the rotating speed of a condenser motor without increasing the quantity of coils and without decreasing the efficiency by providing middle and low speed taps in the midway of an auxiliary coil, and controlling to switch the taps and an operating condenser. CONSTITUTION:A main coil 21 and an auxiliary coil 22 are disposed at an electric angle of 90 deg. on a stator core. A high speed tap 23 of an auxiliary coil 22 is connected in series with an operating condenser 26 at the high speed operation time. The middle and low speed taps 24, 25 which are provided in the midway of the coil 22 are connected in series with an operating condenser 26 in response to a load at the middle and low speed operation time. A time limiter 29 which is connected in parallel with the condenser 26 becomes energized state immediately after starting, a motor is operated in 2 phase of main and auxiliary coils 21, 22, thereby raising the starting torque. After the prescribed period, the limiter 29 operates, thereby energizing the condenser 26.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a capacitor motor having a main winding, an auxiliary winding, and a driving capacitor connected in series therewith.

A conventional capacitor motor will be explained in terms of 1st (1) to 31st (1).In an example of a conventional capacitor motor, 1
is the main winding, 2 is the auxiliary winding, 3 is the high speed tap, 4 is the medium speed tap, 5 is the low speed tap, 6 is the driving capacitor,
7 is a tap switching relay. The main winding 1 and the auxiliary winding 2 are electrically arranged at approximately 90 degrees in the stator core, and the high-speed tap 3 is pulled out from the connection point between the main winding 1 and the auxiliary winding 2, and By pulling out the medium speed tap 4 and the low speed tap 5 from the middle of the winding 2, the load can be adjusted to 1.
It has the feature that it can be used by changing the rotation speed by connecting a core tap and energizing it. However, when using the medium-speed tap 4 and the low-speed tap 5 in rotation speed control using this type of tap switching, an auxiliary device is installed at a position where the current flowing through the main winding l has electrically advanced by 90''. Because the flow flows through some of the windings of the side wire 2, as shown at points a, b, and c in Fig. 3, when the medium speed tap 4 is used for convenience, the curve becomes 5 when the high speed tap 3 is used. If the low-speed tap 5 is used for one cycle, the current flowing in the main winding with a different phase will flow partially into the auxiliary winding, resulting in a gradual decrease in efficiency. There was a defect that the temperature rise of the main winding 1 and the auxiliary winding 2 was high.Also, another type of conventional capacitor motor that improves this defect is shown in No. 21*+, where 11 is the main winding, 12 is the auxiliary winding Winding, 13 is a tap for high speed, 14 is a knob for medium speed, 15 is a tap for low speed, 16 is a capacitor for operation.Main winding +t and Urasuke winding %j on the stator core.
112 is arranged at approximately 900 in terms of air pressure, and this main winding mtt is provided with a tap 13 for high speed, a tap 14 for medium speed, and a tap L5'5 for low speed. Connecting FA1 to the connection ψ of the main winding 11 of the tap 13,
A capacitor whose other terminal is connected to the operating capacitor 16 [-When using the high-speed tap 13 in the evening, the motor material is attached as shown in Figure 1. The design can be the same as when tap 3 is used, and the motor efficiency can be obtained as the dotted line curve in Figure 3. Also, at the end of the middle and at low speeds, in order to not reduce the efficiency of the capacitor motor, the main winding By providing one winding opening in series with the wire 11, the third one has the feature of reducing the rotational speed according to the load without significantly reducing the effectiveness 4' as shown by the solid lines bb and cc as shown in 1. However, the main winding coil from the high-speed tap 13 to the medium-speed tap 14 and low-speed tap 15 is required, making the motor larger and increasing the price. Furthermore, at medium speeds, it is necessary to design the secondary resistance to be small in order to prevent efficient F as much as possible at low speeds, which has the drawback of reducing starting torque.

The object of the present invention is to provide a tap-cut type condenser motor with a variable rotational speed, which has less reduction in efficiency and has no fill amount.

The cause of the large drop in efficiency in conventional tap IJJi type rotary mouth deformed capacitor motors is caused by flowing currents with different phases through the winding layer of the same general direct field rib. This was solved by discovering a method of using the winding layer to pass current through the wire, and the tlj
This was devised with consideration given to increasing the control and starting torque τ.

Hereinafter, one embodiment of the present invention will be explained with reference to FIG. 3 and No. 4. Reference numeral 21 indicates a main winding, 22 indicates an auxiliary winding, 23 indicates a high-speed tap, 24 indicates a medium-speed tap, and 25 indicates a low-speed tap. Tap, 2
6 is a capacitor for operation, 29 is a timer, 27 is a tap-off switch, and 28 is a cut-off terminal.

The main winding 21 and the auxiliary winding 22 are electrically arranged at 900 in the stator core, and during high-speed operation, the high-speed tap 23 of the auxiliary winding 22 is connected in series with the operating capacitor 26, and this combination The main winding is operated by connecting it in parallel with the power supply l111, but at this time, the operating capacitor and the operating capacitor 1j are connected, and since the timer 27 is in a conductive state, the operating capacitor Since TFI does not flow in the main winding and the auxiliary wire, the current increases, and the starting torque can be increased to zero. Immediately after this startup, the timer 27 operates, current flows into the operating capacitor 26, and it operates as a normal capacitor.The characteristics at this time are the same efficiency as a conventional capacitor motor due to the selection of the setting g1, that is, @3 The dotted line 3 curve of C1 can be obtained. During medium-speed operation and low-speed operation, a medium-speed tap 24 and a low-speed tap 25 provided in the middle of the auxiliary winding 22 are connected in series to the operation 2 capacitor depending on the load. At this time, since the timer 29 is connected in parallel with the operation capacitor 26, immediately after starting, the main winding 21 and the auxiliary winding 22 become two-phase 4 [starting torque care knob. The motor efficiency at this time is the ideal energization method as there is no disturbance in the current flowing through the valley winding, so the number of turns in the auxiliary winding is reduced, which reduces the operating torque. By doing so, the rotation speed can be set to exactly 'fr-5, and the effect f at this time is the pullout of the medium-speed tap 24 and low-speed tap 25.
It is possible to reduce the decrease by setting M, and it is possible to obtain the bold lines bb and ccllll# of 83[n1, while at the same time without changing the amount of additional coil.
By providing a timer +t29 in addition to the operating capacitor, it is possible to improve the starting torque at the time of starting each tap selection.

According to the present invention, the rotation speed can be arbitrarily set to 1WIJ according to the load.
As a method of @II, medium-speed and low-speed taps are provided in the middle of the auxiliary winding, and these taps and the operating condenser can be connected to the control side of a relay, etc., thereby reducing the amount of coil used. By installing a timer on the operating capacitor and bending 1j, the starting torque can be reduced at the time of starting the valley tap without increasing the torque or significantly reducing the efficiency during medium-speed and low-speed operation. It has the advantage of being able to supply a tapped gland type variable rotation speed capacitor motor that can differentiate the amplifier.

[Brief explanation of drawings]

ff1t- is a wiring diagram of a conventional example of a capacitor motor,
21y1 is the 7th floor scarlet of the conventional one-mount capacitor motor, 1st is the 7th floor scarlet of the conventional one-mount capacitor motor, 1st is the 1st curve of the young cow for the frequency of the capacitor motor, 4th is 1 is the capacitor of one embodiment of the present invention It is a wiring diagram of a motor. 1.2 + , Main winding, 2.22 - Auxiliary winding, 3.
23...1% 4 tap, 4.24 Medium speed tap, 5.25...1 Mr. April 1 Tano 7', 6.26 Operating capacitor, 7.27 Off switch, a, b, c
, bb, c (...Efficacy curve. Fig. 3 Output Fig. 4

Claims (1)

[Claims] 1. The stator includes a main winding, an auxiliary winding that is electrically spaced apart by 90 yen from the main winding, and a terminal 1111 of one of the auxiliary windings connected to the main winding. Connect to the winding and the other +1
Terminal 111 is a high-speed tap, a medium-speed tap and a low-speed tap are provided in the middle of this auxiliary winding, and a driving capacitor and a timer in parallel are connected to each other by a switching means. A capacitor motor characterized in that the stator core has four main cliffs, and the main winding has χ. Claims [Shokishin's capacitor motor.