TWI667412B - Dual motor device and a fan including the same - Google Patents

Abstract

A dual motor and a fan having the same are used to solve the problem of lack of function of the conventional motor and its fan. The system includes: a first motor rotatably coupled to a first stator by a first rotor; a second motor rotatably coupled to a second by a second rotor a stator assembly; the positioning assembly has a central shaft that connects the first motor and the second motor, the first stator and the second stator are fixedly coupled to the central shaft, the first rotor A first blade is combined, and the second rotor is coupled to a second blade.

Description

Double motor and fan having the same

The present invention relates to a dual motor and a fan having the same, and more particularly to a dual motor that can rotate simultaneously or alternately and a fan having the dual motor.

The conventional motor can combine a set of blades to supply air or wind to a space, and control the motor speed to adjust the wind speed and air volume generated by the fan blades, and has the effect of circulating air.

The rotational speed and torque of the above-mentioned conventional motor can be adjusted, but limited by the fixed specifications of the rotor and the stator. The motor has an adjustable range, and the fan blades that can be combined and driven by the motor must match the motor specifications, and only the achievable Limited power, so a single motor combined with a set of fans can not switch between a wide range and a small range of air flow depending on the situation.

In view of this, the conventional motor and the fan having the motor do have to be improved.

In order to solve the above problems, an object of the present invention is to provide a dual motor and a fan having the same, which can perform various functions simultaneously or alternately, and with different blades.

The object of the present invention is to provide a dual motor and a fan having the same, sharing the same central axis and a set of power sources, which can reduce space and be simple to install.

The dual motor of the present invention comprises: a first motor having a first a second rotor, a second motor having a second stator and a second rotor; a positioning assembly having a central shaft extending through the first motor And the second motor; and a driving circuit, the driving circuit is electrically connected to the first stator and the second stator, the driving circuit outputs a first current to the first stator, and outputs a second current to The second stator, the driving circuit controls a flow direction and a current value of the first current and the second current, the first rotor and the second rotor are rotatably coupled to the central axis, the first stator and the The second stator is fixedly coupled to the central shaft, the first rotor includes a first permanent magnet group, and the second rotor includes a second permanent magnet group.

Accordingly, the dual motor of the present invention, the first stator of the first motor is coupled with the first rotor, and the second stator of the second motor is coupled with the second rotor, and can have different rotational speeds, steering and torque for combination applications. The needs of the work environment.

The volume of the first motor is different from the volume of the second motor. In this way, the first motor and the second motor can have different torques, and the combined blades can act in different ranges, which has the effect of increasing the utility of the motor.

The positioning assembly has a sleeve that is sleeved on the central shaft and abuts the first motor and the second motor. In this way, the first motor and the second motor can maintain a separation distance, and the system has the effect of avoiding mutual interference of the motors during operation.

The direction in which the first current passes through the first stator is the same as the direction in which the second current passes through the second stator. In this way, the first motor and the second motor rotate in the same direction, which has the effect of improving the efficiency of operation in a single direction.

The direction of the first current passing through the first stator is opposite to the direction in which the second current passes through the second stator. In this manner, the first motor and the second motor rotate in opposite directions to have different effects on different regions.

The current value of the first current is the same as the current value of the second current. In this way, the first motor and the second motor can be simultaneously output, and the work has the function of improving the overall output power. effect.

The current value of the first current is different from the current value of the second current. In this way, the first motor and the second motor can be alternately outputted, and have the function of complementary operation.

Wherein, the first rotor has a bearing, and the first rotor is pivotally connected to the central axis via the bearing. In this way, the first rotor can smoothly operate with respect to the central axis, and has the effect of improving the efficiency of the electric energy conversion kinetic energy.

Wherein, the second rotor has a bearing, and the second rotor is pivotally connected to the central axis via the bearing. In this way, the second rotor can smoothly operate with respect to the central axis, and has the effect of improving the efficiency of the electric energy conversion kinetic energy.

The first rotor forms a first accommodating space for accommodating the first stator. In this way, the first stator generates an alternating magnetic field to interact with the first permanent magnet group of the first rotor, and can drive the first rotor to continuously rotate, and the first stator is moved relative to the first rotor. The effect of the first accommodating space.

The second rotor forms a second accommodating space for accommodating the second stator. In this way, the second stator generates an alternating magnetic field to interact with the second permanent magnet group of the second rotor, and can drive the second rotor to continuously rotate, and the second stator moves relative to the second rotor to the second The effect of two accommodation spaces.

The driving circuit has a rotation speed control unit and a steering control unit, and the driving circuit is coupled to the positioning assembly. In this way, the operation modes of the first motor and the second motor can be adjusted, which has the effect of increasing the function of the motor and saving space.

The driving circuit has a first circuit and a second circuit, and the first circuit is coupled to the first motor and the second circuit is coupled to the second motor. In this way, the first motor and the second motor have independent driving circuits, which have the effect of increasing the function of the motor and saving space.

The fan of the present invention may have the above dual motor, and further comprises a first blade combination The first rotor and a second blade are coupled to the second rotor.

The manner in which the first blade and the first rotor are combined with the second blade and the second rotor is different. In this way, the fan blades of different functions and types can be combined to have the effect of increasing the fan function.

The radius of rotation of the first blade is different from the radius of rotation of the second blade. In this way, the first blade and the second blade can act on different sizes, and have the function of switching according to environmental requirements.

The shape of the first blade is different from the shape of the second blade. In this way, the first blade and the second blade can disturb the air at different angles and positions, and have the effects of generating different wind speeds, wind directions and air volumes.

The color of the first blade is different from the color of the second blade. In this way, the first blade and the second blade can be distinguished, which have the effect of functional difference and aesthetic design.

The fan of the present invention comprises: a first motor rotatably coupled to a first stator by a first rotor; a second motor rotatably coupled by a second rotor a second stator; and a positioning assembly having a central shaft connecting the first motor and the second motor, the central shaft not serving as a rotating shaft around which the second motor rotates, The first stator and the second stator are fixedly coupled to the central shaft, the first rotor is coupled to a first blade, and the second rotor is coupled to a second blade.

Wherein, the second motor combines the second fan blade with a blower fan or an axial fan. In this way, air can be pumped between the two motors to provide the effect of guiding air flow.

Wherein, the air blower of the blower fan or the axial fan is provided with an air filter. In this way, it has the effect of filtering the air.

1‧‧‧First motor

11‧‧‧First Stator

12‧‧‧First rotor

121‧‧‧First permanent magnet set

122‧‧‧ bearing

2‧‧‧second motor

21‧‧‧second stator

22‧‧‧second rotor

221‧‧‧Second permanent magnet set

222‧‧‧ bearing

3‧‧‧ Positioning components

31‧‧‧ center axis

32‧‧‧ casing

4‧‧‧Drive circuit

41‧‧‧Speed Control Unit

42‧‧‧Steering Control Unit

43‧‧‧First loop

44‧‧‧second loop

5‧‧‧Air filter

S1‧‧‧First accommodation space

S2‧‧‧Second accommodating space

C1‧‧‧First current

C2‧‧‧second current

F1‧‧‧ first leaf

F2‧‧‧second leaf

T‧‧‧ vents

Fig. 1 is a perspective view showing the combination of the first embodiment of the present invention.

Fig. 2 is a cross-sectional view showing the structure of a first embodiment of the present invention.

Figure 3: Side view of the combination of the second embodiment of the present invention.

Figure 4: Side view of the combination of the third embodiment of the present invention.

Fig. 5 is a cross-sectional view showing the structure of a fourth embodiment of the present invention.

The above and other objects, features, and advantages of the present invention will become more apparent from the aspects of the appended claims. In the first embodiment of the present invention, the coaxial dual motor includes a first motor 1, a second motor 2, and a positioning assembly 3. The positioning assembly 3 coaxially connects the first motor 1 and the second coaxially. Motor 2.

As shown in FIG. 2, the first motor 1 includes a first stator 11 and a first rotor 12, and the first rotor 12 defines a first accommodating space S1 for accommodating the first stator. 11. The first rotor 12 can also include a first permanent magnet group 121 and a bearing 122.

The second motor 2 includes a second stator 21 and a second rotor 22, and the second rotor 22 forms a second accommodating space S2 for accommodating the second stator 21. The second rotor 22 can also include a second permanent magnet group 221 and a bearing 222.

The positioning assembly 3 is extended from the first motor 1 and the second motor 2 by a central shaft 31. The positioning assembly 3 can also be sleeved on the central shaft 31 by a sleeve 32 and abut the first motor 1 . And the second motor 2.

The bearing 122 of the first rotor 12 is pivotally connected to the central shaft 31, and the bearing 222 of the second rotor 22 is pivotally connected to the central shaft 31, so that the first rotor 12 and the second rotor 22 can be The coaxial shaft rotates relative to the central axis 31, and the first stator 11 and the second stator 21 are fixedly coupled to the central shaft 31.

The first stator 11 and the second stator 21 are electrically connected to a driving circuit 4, and the driving circuit 4 outputs a first current C1 to the first stator 11, and the driving circuit 4 outputs a second current C2 is generated to the second stator 21, and the flow direction and current value of the first current C1 and the second current C2 may be changed, so that the first motor 1 and the second motor 2 can be driven by the driving circuit. 4 control rotation. When the first current C1 passes through the first stator 11 and the second current C2 passes through the second stator 21, the first motor 1 and the second motor 2 rotate in the same direction; when the first The direction of the current C1 passing through the first stator 11 is opposite to the direction of the second current C2 passing through the second stator 21. The first motor 1 and the second motor 2 rotate in opposite directions; when the current of the first current C1 The value is the same as the current value of the second current C2, the first motor 1 and the second motor 2 have the same output; when the current value of the first current C1 is different from the current value of the second current C2, the first The motor 1 and the second motor 2 have different outputs.

The driving circuit 4 can also have a speed control unit 41 and a steering control unit 42. In the embodiment, the driving circuit 4 is coupled to the positioning component 3, but not limited thereto. There is a first circuit 43 and a second circuit 44. The first circuit 43 is coupled to the first motor 1 and the second circuit 44 is coupled to the second motor 2.

Referring to FIG. 3, which is a second embodiment of the present invention, the second embodiment of the present invention is substantially the same as the first embodiment described above, and the main difference is the volume of the first motor 1 and the first The volume of the two motors 2 is different. In this embodiment, the volume of the first motor 1 is larger than the volume of the second motor 2, and the number of magnets of the first permanent magnet group 121 may be greater than that of the second permanent magnet group 221. The number of magnets is such that the permanent magnetic field strength of the first rotor 12 is greater than the permanent magnetic field strength of the second rotor 22, or the number of coils or coil turns of the first stator 11 is greater than the number of coils of the second stator 21. The number or the number of turns of the coil, such that the torque of the first motor 1 is greater than the torque of the second motor 2, so that the first motor 1 can drive a larger fan blade.

Referring to Figures 3 and 4, which are the second embodiment and the third embodiment of the present invention, the fan has the coaxial dual motor, and may have a first blade F1 coupled to the first rotor, and A second blade F2 is coupled to the second rotor, and the manner in which the first blade F1 and the first rotor 12 are combined with the second blade F2 and the second rotor 22 may be different. The radius of rotation of the first blade F1 and the radius of rotation of the second blade F2 may be different, and the shape of the first blade F1 may be different from the shape of the second blade F2, and the color of the first blade F1 is The color of the second blade F2 is different. Thus, the first blade F1 and the second blade F2 can generate different wind speeds, wind directions, air volume and range of action, and distinguish the functionality by color.

Referring to FIG. 5, a fourth embodiment of the present invention is a fan having a dual motor, including a first motor 1, a second motor 2, and a positioning assembly 3. The positioning assembly 3 is connected to the first A motor 1 and the second motor 2.

The first motor 1 is rotatably coupled to a first stator 11 by a first rotor 12, and the first rotor 12 is coupled to a first blade F1.

The second motor 2 is rotatably coupled to a second stator 21 by a second rotor 22, and the second rotor 22 is coupled to a second blade F2 to form a blower fan or an axial fan. A blower fan or a venting opening T of the axial fan may be provided with an air filter 5.

The positioning assembly 3 has a central shaft 31 to which the first stator 11 and the second stator 21 are fixedly coupled.

In summary, the dual motor of the present invention and the fan having the dual motor, the first stator of the first motor is coupled to the first rotor, and the second stator of the second motor is coupled to the second rotor, and has different rotational speeds. Steering and torsion, and then combining the first blade and the second blade respectively to meet various wind demands of the working environment.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

Claims (21)

A dual motor comprising: a first motor having a first stator and a first rotor; a second motor having a second stator and a second rotor; a positioning assembly The positioning assembly has a central axis extending through the first motor and the second motor; and a driving circuit electrically connecting the first stator and the second stator, the driving circuit Outputting a first current to the first stator and outputting a second current to the second stator, the driving circuit controlling a flow direction and a current value of the first current and the second current, the first rotor and the first rotor a second rotor rotatably coupled to the central shaft, the first stator and the second stator are fixedly coupled to the central shaft, the first rotor includes a first permanent magnet group, and the second rotor includes a second permanent Magnet set. The dual motor of claim 1, wherein the volume of the first motor is different from the volume of the second motor. The dual motor of claim 1, wherein the positioning assembly has a sleeve that is sleeved to the central shaft and abuts the first motor and the second motor. The dual motor of claim 1, wherein the direction in which the first current passes through the first stator is the same as the direction in which the second current passes through the second stator. The dual motor of claim 1, wherein the direction of the first current passing through the first stator is opposite to the direction in which the second current passes through the second stator. The dual motor of claim 1, wherein the current value of the first current is the same as the current value of the second current. The dual motor of claim 1, wherein the current value of the first current is different from the current value of the second current. The dual motor of claim 1, wherein the first rotor has a bearing. The first rotor is pivotally coupled to the central shaft via the bearing. The dual motor of claim 1, wherein the second rotor has a bearing, and the second rotor is pivotally connected to the central shaft via the bearing. The dual motor of claim 1, wherein the first rotor forms a first accommodating space for accommodating the first stator. The dual motor of claim 1, wherein the second rotor forms a second accommodating space for accommodating the second stator. The dual motor of claim 1, wherein the driving circuit has a rotation speed control unit and a steering control unit, and the driving circuit is coupled to the positioning assembly. The dual motor of claim 1, wherein the driving circuit has a first circuit and a second circuit, the first circuit is coupled to the first motor and the second circuit is coupled to the second motor . A fan having a dual motor according to any one of claims 1 to 13, further comprising a first blade coupled to the first rotor, and a second blade coupled to the second rotor. The fan of claim 14, wherein the first blade and the first rotor are combined with the second blade and the second rotor. The fan of claim 14, wherein the radius of rotation of the first blade is different from the radius of rotation of the second blade. The fan of claim 14, wherein the shape of the first blade is different from the shape of the second blade. The fan of claim 14, wherein the color of the first blade is different from the color of the second blade. A fan includes: a first motor rotatably coupled to a first stator by a first rotor; a second motor rotatably coupled to the second motor by a second rotor Second stator; and a positioning assembly having a central shaft connecting the first motor and the second motor, the central shaft not being a rotating shaft bypassed by the second motor, the first stator and the first The two stators are fixedly coupled to the central shaft, the first rotor is coupled to a first blade, and the second rotor is coupled to a second blade. The fan of claim 19, wherein the second motor combines the second blade with a blower fan or an axial fan. The fan of claim 20, wherein the blower fan or the vent of the axial fan is provided with an air filter.