Multi-gear stepless speed regulation motor

Abstract

The utility model provides a multi-gear stepless speed regulation motor. The multi-gear stepless speed regulation motor comprises a motor body and a capacitor bank electrically connected with the motor body, the capacitor bank is formed by connecting a plurality of capacitors in series; a plurality of gear taps corresponding to different rotating speeds of the motor body are arranged on the motor body; the capacitor bank is used for outputting different total capacitance values so as to change the power supply voltage of the motor body; when the gear tap is selected to be conducted according to the required rotating speed of the motor body, the capacitor bank outputs a corresponding total capacitance value, the power supply voltage of the motor body is adjusted to be the voltage of the corresponding gear tap through capacitance voltage division, the rotating speed of the motor body is adjusted to be the corresponding rotating speed, and stepless speed regulation of the motor body is achieved. Compared with an existing motor, the motor is simple in structure, low in manufacturing cost, low in energy loss, good in stability and high in response speed.

Description

Technical Field

[0001] The utility model relates to the technical field of motor speed regulation, in particular to a multi-gear stepless speed regulation motor. Background Art

[0002] Traditional motors use variable frequency speed regulation to adjust their speed. Based on the proportional relationship between motor speed and input power frequency, the motor speed is changed by changing the motor power frequency. The inverter is the core device for variable frequency speed regulation. It uses AC-DC-AC power conversion technology to rectify the three-phase power into DC power, and then converts the DC power into three-phase AC power of the required frequency through the inverter circuit, thereby achieving precise control of the motor speed.

[0003] However, although the method of variable frequency speed regulation can achieve polarity-free speed regulation and accurate speed regulation, the frequency converter required by the variable frequency speed regulation method is relatively expensive, and has high requirements on the electrical performance of the motor connected to it, the circuit structure is relatively complex, and the energy consumption is also relatively large; therefore, it is necessary to provide a motor with a simple structure, low cost and energy consumption, and capable of accurate polarity-free speed regulation. Utility Model Content

[0004] Aiming at the technical problems of high cost, high energy consumption and complex structure of the polarity-free speed regulation method of the motor in the prior art, the utility model provides a multi-speed-free speed regulation motor.

[0005] A multi-speed stepless speed regulating motor, characterized in that it comprises a motor body and a capacitor group electrically connected to the motor body; the capacitor group is composed of a plurality of capacitors connected in series; the motor body is provided with a plurality of gear taps corresponding to different motor body speeds; the capacitor group is used to output different total capacitance values ​​to change the power supply voltage of the motor body; when the gear tap is turned on according to the required motor body speed, the output of the capacitor group corresponds to the total capacitance value, so that the motor body is steplessly speed-regulated to the corresponding speed.

[0006] Furthermore, the capacitor is composed of several groups of capacitance branches connected in parallel; and the capacitance branch includes several capacitors C connected in series.

[0007] Preferably, each of the capacitor branches is provided with a switch.

[0008] Preferably, the capacitors C are all adjustable capacitors.

[0009] Furthermore, the motor body further comprises a main winding, an auxiliary winding, a speed regulating winding and a starting capacitor C0, the gear taps comprise a first gear tap, a second gear tap, a third gear tap, a fourth gear tap, a fifth gear tap and a sixth gear tap; the main winding, the auxiliary winding and the speed regulating winding are star-connected, the main winding and the speed regulating winding are wound together, one end of the main winding is connected to the speed regulating winding, and the other end leads to a first gear tap connected in series with the first speed regulating winding. A first gear tap and a second gear tap of the speed regulating capacitor C1 are connected; one end of the speed regulating winding connected to the main winding leads to a third gear tap and a fourth gear tap connected in series with the second speed regulating capacitor C2; the other end of the speed regulating winding leads to a fifth gear tap and a sixth gear tap connected in series with the third speed regulating capacitor C3; the starting capacitor C0 is connected in parallel to the branch where the main winding is located, and one end of the starting capacitor C0 is electrically connected to the main winding, and the other end is connected to the auxiliary winding.

[0010] Furthermore, the first speed regulating capacitor C1 is an adjustable capacitor, and the second speed regulating capacitor C2 and the third speed regulating capacitor C3 are solid-state capacitors.

[0011] Further, the first gear tap and the second gear tap are high-speed gear taps, and the motor body speed corresponding to the first gear tap is greater than the motor body speed corresponding to the second gear tap; the third gear tap and the fourth gear tap are medium-speed gear taps, and the motor body speed corresponding to the third gear tap is greater than the motor body speed corresponding to the fourth gear tap; the fifth and sixth gear taps are low-speed gear taps, and the motor body speed corresponding to the fifth gear tap is greater than the motor body speed corresponding to the sixth gear tap. Further, a fuse resistor is connected in series to the input line of the main winding connecting the first gear tap and the second gear tap.

[0012] The beneficial effects of the utility model are as follows: the utility model provides a multi-gear stepless speed regulating motor, including a motor body and a capacitor group electrically connected to the motor body; the capacitor group is composed of a plurality of capacitors connected in series; the motor body is provided with a plurality of gear taps corresponding to different motor body speeds; the capacitor group is used to output different total capacitance values ​​to change the power supply voltage of the motor body; when the gear tap is turned on according to the required motor body speed, the total capacitance value corresponding to the output of the capacitor group is adjusted to the corresponding voltage of the gear tap through capacitor voltage division, and the speed of the motor body is adjusted to the corresponding speed, thereby realizing stepless speed regulation of the motor body. Compared with existing motors, the motor has a simple structure, low manufacturing cost, low energy loss, good stability and fast response speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1A simplified schematic diagram of the structure of a multi-speed stepless speed regulating motor provided by the utility model;

[0014] Figure 2 A simple schematic diagram of the circuit of the motor body provided by the utility model;

[0015] Figure 3 This is a brief schematic diagram of the connection circuits of the various gear taps in the motor body provided by the utility model.

[0016] Figure ID

[0017] 1. Capacitor bank; 2. Capacitor; 3. Capacitor C; 4. Switch; 5. Motor body; 6. Main winding; 7. Auxiliary winding; 8. Speed ​​regulating winding; 9. First gear tap; 10. Second gear tap; 11. Third gear tap; 12. Fourth gear tap; 13. Fifth gear tap; 14. Sixth gear tap; 15. Fuse resistor. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings. The described embodiments are only a part of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0019] refer to Figure 1 As shown, a multi-speed stepless speed regulating motor comprises a motor body 5 and a capacitor group 1 electrically connected to the motor body 5. The capacitor group 1 is used to output different total capacitance values ​​to change the power supply voltage of the motor body 2; by adjusting the voltage of the capacitor group 1, the voltage is stabilized based on the capacitor voltage division method, and then the power supply voltage of the motor body 1 is changed, thereby realizing stepless regulation of the motor body speed.

[0020] Specifically, the capacitor bank 1 is composed of a plurality of capacitors 2 connected in series; the capacitor 2 is composed of a plurality of capacitor branches connected in parallel; and the capacitor branches include a plurality of capacitors 3 connected in series. Figure 1 As shown, the capacitors 3 are all adjustable capacitors. By adjusting the capacitance value of each capacitor 3, and then changing the capacitance value of the capacitor 2, the total capacitance value of the capacitor group 1 can be adjusted, and the voltage of the input capacitor group 1 and the motor body 1 can be divided, thereby correspondingly changing the power supply voltage of the motor body 5.

[0021] Preferably, reference Figure 2, each of the capacitor branches is provided with a switch 4. By controlling the opening and closing of the switch 4, the number of connected capacitor branches is controlled, and the capacitance value of the capacitor 2 is changed, so that the total capacitance value of the capacitor group 1 can be adjusted.

[0022] The motor body is provided with a plurality of gear taps corresponding to different motor body speeds; Figure 3 As shown, the motor body 5 also includes a main winding 6, an auxiliary winding 7, a speed regulating winding 8 and a starting capacitor C0; the gear taps include a first gear tap 9, a second gear tap 10, a third gear tap 11, a fourth gear tap 12, a fifth gear tap 13 and a sixth gear tap 14; the main winding 6, the auxiliary winding 7 and the speed regulating winding 8 are star-connected, the main winding 6 and the speed regulating winding 8 are wound together, and one end of the main winding 6 is connected to the speed regulating winding 8, and the other end leads to a first gear tap 9, a second gear tap 10, a third gear tap 11, a fourth gear tap 12, a fifth gear tap 13 and a sixth gear tap 14. The first gear tap 9 and the second gear tap 10 of the speed regulating capacitor C1; the end of the speed regulating winding 8 connected to the main winding 6 leads to a third gear tap 11 and a fourth gear tap 12 connected in series with the second speed regulating capacitor C2; the other end of the speed regulating winding 8 leads to a fifth gear tap 13 and a sixth gear tap 14 connected in series with the third speed regulating capacitor C3; the starting capacitor C0 is connected in parallel to the branch where the main winding 6 is located, and one end of the starting capacitor C0 is electrically connected to the main winding 6, and the other end is connected to the auxiliary winding 7. By setting a speed regulating switch and controlling the connection between the speed regulating switch and any gear tap, the user can turn on any gear tap according to actual needs, and cooperate with the capacitor group 1 to infinitely adjust the current speed of the motor body 2 to the corresponding speed.

[0023] The first speed regulating capacitor C1 is an adjustable capacitor, and the second speed regulating capacitor C2 and the third speed regulating capacitor C3 are solid capacitors. The adjustable capacitor allows the user to further fine-tune the motor speed to match the load power; while the solid capacitor provides a stable capacitance value to ensure the stable operation of the motor at different gears.

[0024] The first gear tap 9 and the second gear tap 10 are high-speed gear taps, and the motor body speed corresponding to the first gear tap 9 is greater than the motor body speed corresponding to the second gear tap 10; the third gear tap 11 and the fourth gear tap 12 are medium-speed gear taps, and the motor body speed corresponding to the third gear tap 11 is greater than the motor body speed corresponding to the fourth gear tap 12; the fifth gear tap 13 and the sixth gear tap 14 are low-speed gear taps, and the motor body speed corresponding to the fifth gear tap 13 is greater than the motor body speed corresponding to the sixth gear tap 14.

[0025] A fuse resistor 15 is also connected in series to the input line of the main winding 6 connecting the first gear tap 9 and the second gear tap 10, which can effectively protect the motor body 5 and other circuit elements from damage and improve the safety and reliability of the equipment.

[0026] The speed regulation process of a multi-speed stepless speed regulating motor provided by the utility model is as follows: select any gear tap to determine the target speed of the motor body 2, and then according to the proportional relationship between the speed of the motor body 2 and the power supply voltage, the total capacitance value corresponding to the output of the capacitor group 1, adjust the power supply voltage of the motor body 5 to the voltage of the corresponding gear tap through capacitor voltage division; during the regulation process, a feedback device can be set to monitor the actual speed of the motor body 2 in real time, and compare it with the target speed. If there is a difference, continue to adjust the supply voltage until the actual speed of the motor body 2 is consistent with the target speed of the selected gear tap or reaches a predetermined error range, so as to achieve stepless speed regulation of the motor body 5. Compared with existing motors, this motor has a simple structure, low manufacturing cost, low energy loss, good stability and fast response speed.

[0027] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model, and do not limit the utility model to the specific implementation methods described. Obviously, other modifications and changes can be made according to the content of this specification. The embodiments selected and specifically described in this specification are to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can understand and use the utility model well. It is not a limitation of the utility model. Any solution after simple deformation of the utility model belongs to the protection scope of the utility model.

Claims

1. A multi-speed stepless speed regulating motor, characterized in that: It comprises a motor body and a capacitor group electrically connected to the motor body; the capacitor group is composed of a plurality of capacitors connected in series; the motor body is provided with a plurality of gear taps corresponding to different motor body speeds; The capacitor bank is used to output different total capacitance values ​​to change the power supply voltage of the motor body; When the gear tap is turned on according to the required motor body speed, the total capacitance value corresponding to the output of the capacitor group enables the motor body to be infinitely regulated to the corresponding speed.

2. A multi-speed stepless speed regulating motor according to claim 1, characterized in that: The capacitor is composed of several groups of capacitance branches connected in parallel; and the capacitance branches include several capacitors C connected in series.

3. A multi-speed stepless speed regulating motor according to claim 2, characterized in that: Each of the capacitor branches is provided with a switch.

4. A multi-speed stepless speed regulating motor according to claim 2, characterized in that: The capacitors C are all adjustable capacitors.

5. The multi-speed stepless speed regulating motor according to claim 1, characterized in that: The motor body also includes a main winding, an auxiliary winding, a speed regulating winding and a starting capacitor C0, and the gear taps include a first gear tap, a second gear tap, a third gear tap, a fourth gear tap, a fifth gear tap and a sixth gear tap; the main winding, the auxiliary winding and the speed regulating winding are star-connected, the main winding and the speed regulating winding are wound together, and one end of the main winding is connected to the speed regulating winding, and the other end leads to a first gear tap and a second gear tap connected in series with the first speed regulating capacitor C1; one end of the speed regulating winding connected to the main winding leads to a third gear tap and a fourth gear tap connected in series with the second speed regulating capacitor C2; the other end of the speed regulating winding leads to a fifth gear tap and a sixth gear tap connected in series with the third speed regulating capacitor C3; the starting capacitor C0 is connected in parallel to the branch where the main winding is located, and one end of the starting capacitor C0 is electrically connected to the main winding, and the other end is connected to the auxiliary winding.

6. A multi-speed stepless speed regulating motor according to claim 5, characterized in that: The first speed regulating capacitor C1 is an adjustable capacitor, and the second speed regulating capacitor C2 and the third speed regulating capacitor C3 are solid-state capacitors.

7. The multi-speed stepless speed regulating motor according to claim 5, characterized in that: The first gear tap and the second gear tap are high-speed gear taps, and the motor body speed corresponding to the first gear tap is greater than the motor body speed corresponding to the second gear tap; the third gear tap and the fourth gear tap are medium-speed gear taps, and the motor body speed corresponding to the third gear tap is greater than the motor body speed corresponding to the fourth gear tap; the fifth gear tap and the sixth gear tap are low-speed gear taps, and the motor body speed corresponding to the fifth gear tap is greater than the motor body speed corresponding to the sixth gear tap.

8. The multi-speed stepless speed regulating motor according to claim 5, characterized in that: A fuse resistor is also connected in series on the input line of the main winding connecting the first gear tap and the second gear tap.

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