JPH10201181A - Flat motor with control circuit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent leakage of electromagnetic wave generated from a connection cable and to prevent voltage drop due to a cable by housing a motor and a control circuit in a same housing while integrating. SOLUTION: Each printed circuit board 4 of an inverter 1 and components, e.g. a capacitor 5, are housed in a housing 6 constituting a motor. Power is fed from the inverter 1 to a motor stator 8 through the printed board 4 and a joint 7. Consequently, the inverter 1 and the motor are jointed straight. Since the control section for regulating the r.p.m. of the motor is integrated with the motor, r.p.m. can be regulated easily while observing the motor load. According to the arrangement, electromagnetic wave generated from a long connection cable between the control circuit and the motor is prevented from leaking to the outside and interfering with peripheral electronic apparatus on. Furthermore, voltage drop due to the cable is eliminated and the terminal voltage of the motor is increased thus enhancing the characteristics of the motor while reducing loss.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat electric motor used for a pump, a fan, an industrial machine or the like, and more particularly to a flat motor with a control circuit.

[0002]

2. Description of the Related Art FIG. 9 is a conceptual diagram of a conventional inverter drive motor. In a control circuit 91 such as a motor 92 operated at a variable speed by an inverter or the like,
And the motor 92 are separate, and are connected by a cable 93 between them as shown in FIG. The control circuit 91 has a power supply 9
4, the power is converted to an arbitrary power, and the power is supplied to the motor 92 via the cable 93 to control the speed.

[0003]

The high-frequency components contained in the output power of the control circuit 91, such as the inverter, leak from the cable to the outside as electromagnetic waves, and are mixed as noise into electronic devices, televisions, radios, and the like near the cable, and the operation thereof is performed. In some cases, it would interfere with the operation.

Further, since the motor 92 and the control circuit unit 91, for example, an inverter, are separated, it is not possible to finely adjust the number of rotations while observing the load and rotation state of the motor.

Furthermore, since the control circuit 91, for example, the inverter and the motor 92 are connected to each other by a long cable, the voltage drop by the cable 93 causes a problem that the terminal voltage of the motor drops below the output terminal of the inverter. There was also.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent leakage of electromagnetic waves from a cable between an inverter and a motor when the motor is driven by a control circuit such as an inverter, and to eliminate a voltage drop caused by the cable. It is an object of the present invention to provide a flat motor with a control circuit which can adjust the rotation speed and voltage of the motor while checking the load and the state of the motor at the motor directly connected to the motor.

[0007]

According to a first aspect of the present invention, there is provided a flat motor with a control circuit, the rotor comprising a permanent magnet;
A stator provided to oppose the permanent magnet, and a control circuit for supplying power to windings constituting the stator,
The rotor, the stator, and the control circuit are housed in the same housing. The motor and the control circuit are integrated, and the motor and the control circuit are housed in the same housing. Therefore, since there is no cable between the motor and the control circuit and the connection is made directly from the control circuit, leakage of electromagnetic waves by the cable and voltage drop by the cable are also eliminated. A flat motor with a control circuit according to a second aspect is the flat motor with a control circuit according to the first aspect, wherein the control circuit is an inverter circuit. Because the motor and the inverter circuit are integrated,
It is easy to adjust the number of rotations of the load by the inverter circuit while observing the state of the motor.

A flat motor with a control circuit according to claim 3 is
A flat motor with a control circuit according to claim 1, wherein the rotor is formed of a squirrel-cage rotor. Since the rotor is composed of a cage rotor, it is an induction motor. If the control circuit is damaged, the motor can be operated by connecting the power supply directly to the motor.

According to a fourth aspect of the present invention, there is provided a flat motor with a control circuit.
A switch reluctance motor, and a control circuit for operating and controlling the switch reluctance motor are provided, and the switch reluctance motor and the control circuit are housed in the same housing.

[0010] According to a fifth aspect of the present invention, there is provided a flat motor with a control circuit.
A rotor configured by a permanent magnet, a stator provided to oppose the permanent magnet, a control circuit that supplies power to windings configuring the stator, and a capacitor provided in the control circuit. And a housing for housing the rotor, the stator, and the control circuit, wherein the housing is provided with a lid for facilitating replacement of the capacitor. . The capacitor of the control circuit is housed in a place where it can be easily taken out from the outside, so that replacement of the consumer due to malfunction or deterioration is easy.

A flat motor with a control circuit according to claim 6 is
A rotor constituted by permanent magnets, a stator provided opposite the permanent magnets, a control circuit for supplying power to windings constituting the stator, the rotor, the stator, and the A housing for accommodating a control circuit; and a partition wall provided between the rotor and the stator. Since the partition is provided, the winding portion of the stator of the motor is protected. Therefore, the problem of insulating the coil from the liquid can be solved.

A flat motor with a control circuit according to claim 7 is
A rotor constituted by permanent magnets, a stator provided opposite the permanent magnets, a control circuit for supplying power to windings constituting the stator, the rotor, the stator, and the A housing for accommodating a control circuit, wherein the stator is molded with resin.

The flat motor with a control circuit according to claim 8 is
A rotor constituted by a permanent magnet, a stator provided opposite the permanent magnet, a control circuit for supplying electric power to windings constituting the stator, and a pump mounted on the rotor And the rotor, the stator, the control circuit, and the pump rotary blade are housed in the same housing.

A flat motor with a control circuit according to claim 9 is
A rotor constituted by a permanent magnet, a stator provided opposite to the permanent magnet, a control circuit for supplying electric power to a winding constituting the stator, and a fan blade attached to the rotor And the rotor, the stator, the control circuit, and the fan blades are housed in the same housing.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to the drawings. 1 to 3 are sectional views of a flat motor with a control circuit according to a first embodiment of the present invention. Since the motor is flat, it is an axial air gap type. Further, components such as a control circuit, for example, each circuit printed circuit board 4 and a capacitor 5 of the inverter 1 are housed in a housing 6 constituting a motor. 9
Is a permanent magnet rotor, 11 is an output shaft, and 10 is a cooling fan. 12 is a cage rotor, and 13 is a switched reluctance motor.

Power is supplied from the inverter 1 to the motor stator 8 via the printed circuit board 4 and the connection portion 7. For this reason, the connection between the inverter and the motor is made directly, and no leakage of electromagnetic waves or voltage drop due to the connection line occurs. For this reason, there is no hindrance to the electronic devices and the like near the motor. In addition, there is an effect that the motor voltage increases more than before, the characteristics of the motor improve, and the power consumption of the motor decreases.

Further, since the control unit for adjusting the rotation speed of the motor is integrated with the motor, there is an advantage that the rotation speed can be easily adjusted while observing the load of the motor. Next, a second embodiment will be described.

FIG. 4 is a partial sectional view of a flat motor with a control circuit according to a second embodiment. Since the capacitor 5 used in the control circuit is installed in a place where it can be easily taken out from the outside, and the lid 14 is provided in the housing 6, the taking out is extremely easy. For this reason, when the consumer has failed or deteriorated, replacement is easy. Also,
Reference numeral 15 denotes a capacitor holder.

Next, a third embodiment will be described. FIG.
FIG. 6 and FIG. 6 are sectional views of a control unit and a motor stator according to a third embodiment of the present invention. In FIG. 5, the partition 1 is located at the stator 8.
6, the stator coil portion is protected, so that even if water, liquid, or the like enters the motor, it does not directly touch the coil of the stator. For this reason, there is no need to worry about insulation of the coil of the motor. The partition is made of metal or resin.

In FIG. 6, since the entire coil is molded with the resin 17 and the like together with the stator 8, the insulation of the coil and the like are not affected by the liquid and the like inside the motor. In addition, there is an advantage that it becomes strong against vibration.

Next, a fourth embodiment will be described with reference to FIG. FIG. 7A shows a control unit 1, a motor 2, and a pump 1.
8 shows an external view when integrated, and (b) shows a cross-sectional view. In the figure, the same components as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted. 19 is a pump rotating blade. These are integrated and housed in the same housing, so they are smaller than if they were installed separately. In addition, leakage of electromagnetic waves and the like to the outside is reduced. The amount of water can be adjusted while observing. FIG. 8 shows a case where a fan is attached to the output shaft of the motor. Reference numeral 20 denotes a fan blade, and reference numeral 21 denotes a fan casing.

As in the case of the pump, the size is reduced compared to the case where the pumps are separately installed. Also, since the control circuit is located near the fan, the air volume can be adjusted delicately and immediately.

[0023]

According to the present invention, the control circuit and the motor are integrated and housed in the same housing, so that the electromagnetic wave generated by the long connection cable between the control circuit and the motor is prevented from leaking to the outside.
The risk of interference with nearby electronic devices is eliminated.

In addition, the voltage drop due to the cable is eliminated, the terminal voltage of the motor is increased, the characteristics of the motor are improved, and the motor loss is reduced. In addition, by being integrated, the size can be reduced, and the space can be saved as compared with the case where they are separately installed.

Further, since an inverter or the like is installed in the immediate vicinity of the load, it is possible to finely adjust the rotation speed and the like while checking the state of the load. When the pump and the fan are combined with each other, the size can be made smaller than when they are separately installed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention (a cross-sectional view of a flat motor with a control circuit).

FIG. 2 is a diagram showing a first embodiment of the present invention (a cross-sectional view of a flat motor with a control circuit).

FIG. 3 is a diagram showing a first embodiment of the present invention (a cross-sectional view of a flat motor with a control circuit).

FIG. 4 is a diagram showing a second embodiment of the present invention.

FIG. 5 is a view showing a third embodiment of the present invention (a cross-sectional view of a motor stator of a flat motor with a control circuit).

FIG. 6 is a view showing a third embodiment of the present invention (a sectional view of a motor stator of a flat motor with a control circuit).

FIG. 7 is a diagram showing a fourth embodiment of the present invention.

FIG. 8 is a diagram showing a fourth embodiment of the present invention.

FIG. 9 is a diagram showing an example of installation and connection of a conventional control circuit and a motor.

[Explanation of symbols]

1 is an inverter, 2 is a motor, 4 is a printed circuit board, 5 is a capacitor, 6 is a housing, 7 is a connection part, 8 is a motor stator, 9 is a permanent magnet rotor, 10 is a fin, 11 is an output shaft, and 12 is a car. Reference numeral 13 denotes a switched reluctance motor, 14 denotes a lid, 15 denotes a capacitor holder, 16 denotes a partition, 17 denotes a resin, 18 denotes a pump, 19 denotes a pump rotating blade, 20 denotes a fan blade, and 21 denotes a fan casing.

Claims (9)

[Claims] A rotor configured by a permanent magnet, a stator provided to oppose the permanent magnet, and a control circuit for supplying power to a winding constituting the stator; A flat motor with a control circuit, wherein the rotor, the stator, and the control circuit are housed in the same housing. 2. The flat motor with a control circuit according to claim 1, wherein said control circuit is an inverter circuit. 3. The flat motor with a control circuit according to claim 1, wherein said rotor comprises a pentagonal rotor. 4. A switch reluctance motor, and a control circuit for operating and controlling the switch reluctance motor, wherein the switch reluctance motor and the control circuit are housed in the same housing. Flat motor with control circuit. 5. A rotor constituted by a permanent magnet, a stator provided to oppose the permanent magnet, a control circuit for supplying electric power to windings constituting the stator, and a control circuit It has a provided capacitor, and a housing for housing the rotor, the stator, and the control circuit, wherein a lid for facilitating replacement of the capacitor is provided in the housing. Flat motor with control circuit. 6. A rotor constituted by a permanent magnet, a stator provided opposing the permanent magnet, a control circuit for supplying electric power to windings constituting the stator, A flat motor with a control circuit, comprising: a housing for accommodating the stator and the control circuit, wherein a partition is provided between the rotor and the stator. 7. A rotor constituted by a permanent magnet, a stator provided opposite to the permanent magnet, a control circuit for supplying electric power to a winding constituting the stator, A flat motor with a control circuit, comprising: a housing for housing the stator and the control circuit, wherein the stator is molded with resin. 8. A rotor constituted by a permanent magnet, a stator provided opposing the permanent magnet, a control circuit for supplying electric power to windings constituting the stator, Having a pump rotary blade for a mounted pump,
A flat motor with a control circuit, wherein the rotor, the stator, the control circuit, and the pump rotary blade are housed in the same housing. 9. A rotor constituted by a permanent magnet, a stator provided opposite to the permanent magnet, a control circuit for supplying electric power to a winding constituting the stator, A flat motor with a control circuit, comprising: a mounted fan blade; wherein the rotor, the stator, the control circuit, and the fan blade are housed in the same housing.