Variable frequency speed regulating disk type motor and vacuum pump

Abstract

The invention provides a variable frequency speed regulating disk type motor which uses sinusoidal windings and is in a double-layered type. Through interactive compensation action of two coils in each electrode of two main windings, the electrodes are sequentially connected, a magnetic filed is made to be distributed more evenly, the waveform is close to the sine wave, and declining of torque can not happen any more at a low rotating speed. Meanwhile, in the starting process, an auxiliary winding is connected with an operating capacitor and a starting capacitor, in the operating process, the auxiliary winding and the operating capacitor are connected, and startability and overload capacity are guaranteed. Meanwhile, through switching of the connecting mode of a high voltage and a low voltage, when the motor works in the high voltage of 200V-240V, the first main winding and the second main winding are in parallel connection with an auxiliary winding circuit after being in series connection, and when the motor works in the low voltage of 100V-120V, the first main winding, the second main winding and the auxiliary winding circuit are in mutual parallel connection. The variable frequency speed regulating disk type motor meets the operating demands in different rotating speed range under a general voltage condition in the global range. In addition, integration of the motor and a pump is achieved when the variable frequency speed regulating disk type motor is applied to a vacuum pump.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a frequency-variable speed-regulating disc motor for a vacuum pump and a vacuum pump using the motor. Background technique [0002] The existing variable frequency speed regulating motor for vacuum pumps is structurally assembled separately from the vacuum pump, and is independent of each other. Due to high energy consumption during operation and the inability to meet the operating requirements of low-speed and low-frequency working conditions of 100V-120V and 200 rpm, the loss of torque at low speeds is severely reduced, the load capacity is not stable during operation, and the efficiency is obvious. Reduced, thus unable to meet the requirements of the vacuum pump running at low frequency and low speed. At the same time, the existing variable-frequency speed-regulating motor cannot meet the requirements of different voltage and frequency standards in different countries and regi...

AI Technical Summary

Problems solved by technology

[0002] The existing variable frequency speed regulating motor for vacuum pumps is structurally assembled separately from the vacuum pump, and is independent of each other. Due to high energy consumption during operation and the inability to meet the operating requirements of low-speed and low-frequency working conditions of 100V-120V and 200 rpm, the loss of torque at low speeds is severely reduced, the load capacity is not stable during operation, and the efficiency is obvious. Reduced, thus unable to meet the requirements of the vacuum pump running at low frequency and low speed

At the same time, the existing variable-frequency speed-regulating motor cannot meet the requirements of different voltage and frequency standards in different countries and regions such as North America, Asia, Europe, etc., so that the scope of use of the vacuum pump matching this motor is greatly limited.

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