KR20000032316A - Fan motor structure - Google Patents

Abstract

PURPOSE: A fan motor structure is provided which separates a rotor and a stator, so that the structure improves the fan motor efficiency and ventilation efficiency by increasing the air flow with relation to the air flowing area even though the rotator rotates with a low speed. CONSTITUTION: A fan motor structure including a fan housing(204) formed with a hole for receiving fan wings(202) and having a rotation shaft fixedly mounted at a central part of the hole, and rotation wings rotatable coupled with the rotation shaft, includes a plurality of rotors(201) made of permanent magnet and mounted on the rotation wings, at least one stator(203) to be magnetized in response to power supply and mounted in the fan housing facing to the rotator when the rotor is rotating, and a sensor part(205) mounted in the fan housing with a predetermined distance from the stator for detecting the magnetic field of the adjacent rotator when the rotor is in a position facing to the stator, wherein the sensor part supplies electric power to the stator when the magnetic power of the rotator is detected or otherwise blocking the power supply to the stator.

Description

Fan motor structure

The present invention relates to a fan motor (Motor) structure, and more particularly to improve the efficiency of the stator (Status) and the rotor (Rotator) constituting the motor in the fan rotated by the rotational force of the motor to improve ventilation efficiency It relates to a fan motor structure with increased.

Generally, there are many kinds of motors such as brush motor, brushless motor, stepping motor, and linear motor. Fans using these motors have a driving part (stator and rotor) on the central axis. The motor having the former) is positioned, and is manufactured in the form of attaching a rotary blade to the outside of the driving unit.

1 is a perspective view of a conventional fan motor, FIG. 2 is a side cross-sectional view of FIG. 1, and FIG. 3 is a view showing an air flow area by a conventional fan motor.

1 to 3, the conventional fan motor structure will be described schematically. A stator 102 and a rotor 103 are installed inside the motor 101, and the motor 101 is mounted on the fan housing 104. Is supported by. The rotor blades 105 of the motor 101 are coupled to the rotor blades 105, and the rotor blades 105 are rotated by the rotational force of the stator 102 of the motor 101. Other types of motors are the same or similar.

However, according to the conventional fan motor structure, the following problems occur.

First, as the stator 102 and the rotor 103 are installed inside the motor 101, the size of the motor 101 is increased, and as a result, as shown in FIG. As the flow area is reduced, the flow rate of air relative to the driving force decreases, thereby reducing the efficiency of the fan.

Second, since the flow amount of air decreases, in order to obtain sufficient efficiency, the driving force of the motor 101 should be designed more quickly, and heat is generated in the motor 101, thereby degrading the performance of the motor 101.

Third, since the motor 101 should rotate at high speed, noise occurs.

Fourth, as the motor 101 rotates at a high speed, the performance of the shaft support decreases, thereby increasing the defective rate of the fan motor.

Fifth, since the design work, such as the fixing of the shaft, the adjustment of the interval, the rotation force should be very precise in the design process of the rotor 103 and the stator 102, the work efficiency is reduced.

Sixth, since the design work is very precise, the failure rate is increased accordingly.

Seventh, when the rotor 103 and the stator 102 are mounted inside the motor 101, it is impossible to make a perfect sealed structure, it is not possible to remove it when the rotation failure due to dust, dirt, and the like.

Eighth, when a rotation failure occurs, the motor 101 is overloaded, and thus a fire is likely to occur.

Accordingly, the present invention is to solve such problems, an object of the present invention is to provide a fan motor structure to improve the structure of the fan motor to increase the flow area of the air to smooth the flow of air. .

In addition, another object of the present invention is to provide a fan motor structure that improves the efficiency of the fan motor by changing the arrangement of the stator and the rotor.

1 is an overall perspective view of a conventional fan motor,

2 is a side cross-sectional view of FIG.

3 is a view showing the air flow area by a conventional fan motor,

4 is an overall perspective view of a fan motor according to the present invention;

5 is a plan view of FIG. 4,

6 is a side cross-sectional view of FIG. 4,

7 is an equivalent circuit diagram of the present invention,

8 and 9 are diagrams for explaining the principle of the present invention.

<Description of the code | symbol about the principal part of drawing>

201: rotor 202: rotor blade

203: stator 204: fan housing

205: sensor unit 206: magnetic Hall element

207: central axis 208, 208a: switching element

A feature of the present invention for achieving the above object is a fan housing including a rotating shaft is formed in the receiving hole that can receive the rotation blade is fixed to the approximately central portion of the receiving hole, and the rotary blade coupled to the rotating shaft to enable free rotation In the fan motor comprising: a plurality of rotors made of permanent magnets are installed on the rotor blades, at least one stator is embedded in the fan housing so that the rotors are opposed at arbitrary positions when the rotors are rotated, and power is applied to the stator. If the stator is magnetized, the sensor is embedded in the fan housing spaced apart from the stator to detect the magnetic field of the adjacent rotor when the rotor is located at the point facing the stator.

Here, the rotor is bonded to the end of the rotary blade by the adhesive member, or the receiving groove of a predetermined size is cut to the end of the rotary blade, the rotor is coupled in a state accommodated in the receiving groove.

In addition, the stator is installed to have a predetermined inclination with the rotor in the rotation direction of the rotor, and when the power is applied, the rotor is magnetized with the same polarity as the rotor when the rotor is located at the point facing the stator to generate a repulsive force You can also rotate.

On the other hand, the stator is installed to have a predetermined inclination with the rotor in a reverse direction with respect to the rotation direction of the rotor, and when the power is applied, when the rotor reaches a point adjacent to the stator, it is magnetized to a different polarity from the rotor to generate suction force The rotor can also be rotated.

In addition, the sensor unit supplies power to the stator when the magnetic force by the rotor is detected, and cuts off the power supplied to the stator when the rotor rotates to detect the magnetic force of the rotor.

At this time, the sensor unit is composed of at least one switching element so as to correspond to the magnetic Hall element and the stator one-to-one, the switching element is turned on as the sensor unit is within the magnetic field range of the rotor and the magnetic force generated in the rotor is transmitted to the Hall element Power is supplied to the stator.

The stators are embedded in the same number of rotors installed on the rotor blades, and the stators are arranged at equal intervals.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the elements of each drawing, it should be noted that the same elements are denoted by the same reference numerals as much as possible even if they are displayed on different drawings. In addition, in the following description, many specific details are shown, such as specific blocks or components of circuits, which are provided to help a more general understanding of the present invention, and the present invention may be practiced even if these specific details are removed or modified. It will be obvious to those of ordinary skill in the art. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

4 is a perspective view of the fan motor according to the present invention, FIG. 5 is a plan view of FIG. 4, FIG. 6 is a side cross-sectional view of FIG. 4, and FIG. 7 is an equivalent circuit diagram of the present invention. 8 and 9 are diagrams for explaining the principles of the present invention.

First, referring to FIGS. 4 to 6, a plurality of rotors 201 is installed at an end portion of the rotor blade 202 and is made of a permanent magnet. At this time, the rotor 201 may be installed in the form of fusion or attachment to the outer edge of the rotary blade 202, after cutting a part of the outer portion of the rotary blade 202 after the rotor 201 in the cut position It can also be installed in a combined form. At this time, the polarity of each rotor 201 should match the polarity of any one of the N pole or the S pole.

A plurality of stator 203 is embedded in the fan housing 204, where the stator 203 is embedded at a position opposite from the point installed in the rotor 201. That is, the height at which the stator 203 is embedded is the same height as the position where the rotor 201 is installed, and at least one is embedded regardless of the number of the rotors 201. At this time, it is preferable that the plurality of stators 203 are embedded in the same number as the number of the rotors 201, and arranged at the same interval as the angle at which each rotor 201 is installed. As the structure of the stator 203, an electromagnet, a bobbinless coil, or the like capable of generating a magnetic force through the control of the current flow according to the ampere law is used.

The sensor unit 205 detects the position of the rotor 201 so that the stator 203 generates a magnetic force when the rotor 201 is present at a predetermined position of the stator 203. In general, a magnetic Hall IC 206, a magnetic head or an infrared sensor is used.

The fan housing 204 has a stator 203 and a sensor unit 205 built therein, and serves to fix the central axis 207 of the rotary blade 202.

Meanwhile, as illustrated in FIGS. 7 and 8, the sensor unit 205 includes a plurality of switching elements 208 and 208a installed in a one-to-one correspondence with the magnetic hall element 206 and the stator 203. And a predetermined control signal is output from the magnetic Hall element 206 as detected by the magnetic Hall element 206 to the magnetic force of the rotor 201, thereby turning on the switching elements 208 and 208a. It is supplied to this stator 203, and is comprised so that the stator 203 may be magnetized.

The operation of the present invention having such a configuration will be described below with reference to FIGS. 7 to 9.

First, in the present invention, the rotor blade 202 is rotated using the repulsive force between the stator 203 and the rotor 201, and the rotor blade is driven using the suction force between the stator 203 and the rotor 201. The case of rotating 202 can be applied. Here, when the magnetic force generated in the stator 203 is set to have the same polarity as the rotor 201, a repulsive force is generated between the stator 203 and the rotor 201, and the magnetic force generated in the stator 203 is rotated. If it is set to have a different polarity than the electron 201, a suction force is generated between the stator 203 and the rotor 201. Each of these methods are embodiments derived under the same concept, and the present invention will be limited to the case in which the rotary blade 202 is rotated by using the repulsive force between the stator 203 and the rotor 201.

When the rotor blades 202 are stationary, any one of the rotors 201 attached to the rotor blades 202 is fixed with a weak magnetic force at the position where the stator 203 is embedded. That is, since the power is not applied to the stator 203 when the rotary blade 202 is in a stopped state, the stator 203 at this time becomes a general iron component without magnetic force. On the contrary, since the rotor 201 is a permanent magnet magnetized to an arbitrary polarity, the stator 203 is sucked, and thus the rotor blade 202 stops. At this time, the magnetic Hall element 206 of the sensor unit 205 is attached to a position capable of detecting the adjacent rotor 201.

When the power is applied, the magnetic Hall element 206 in the sensor unit 205 detects the magnetic force generated by the rotor 201, and accordingly, the stator 203 is supplied with power so that the magnetic force having the same polarity as that of the rotor 201. As a result, a repulsion force is generated between the stator 203 and the rotor 201 to move the rotor 201 and the rotor blade 202. At this time, since the stator 203 and the rotor 201 are positioned at a predetermined angle (for example, 5 °), when the magnetic force is generated, the rotary blade 202 moves in a specific direction ("A" direction shown in FIG. 7). Rotate

Then, when the rotor blade 202 moves a certain distance, the rotor 201 is out of the detection range of the sensor unit 205, the power supplied to the stator 203 is cut off, the stator 203 loses magnetic force . At this time, the rotary blade 202 is further rotated by a predetermined angle by the inertial force. Here, the role of the sensor unit 205 serves to suppress the magnetic force of the stator 203 before the starting rotor 201 approaches the magnetic field of the stator 203 at the next position. If the magnetic force of the stator 203 is present before the starting rotor 201 is within the magnetic field range of the stator 203 at the next position, the same polarity exists between the stator 203 and the rotor 201. Due to this, a repulsive force is generated in the direction of blocking the rotational force of the rotary blade 202.

When the rotor 201 is close to the magnetic field of the stator 203 and the magnetic Hall element 206 in the sensor unit 205 senses the magnetic force generated by the rotor 201, the power is supplied to the stator 203 again. Since the magnetic force is generated in the stator 203 to generate the repulsive force in the direction of rotating the rotary blade 202, the rotary blade 202 continues to rotate.

As this process is repeated, the rotary blade 202 rotates continuously, and the rotational speed of the rotary blade 202 is the strength and spacing of the magnetic force between the stator 203 and the rotor 201 and the stator 203 and It is determined by the number of rotors 201.

In addition, by applying a reverse voltage to the stator 203 to generate mutually different polarities, a braking function may be provided by generating a suction force between the stator 203 and the rotor 201.

On the other hand, as another embodiment of the present invention, the stator 203 is embedded to have a predetermined slope in the reverse direction with respect to the rotation direction of the rotor 201, the stator when the rotor 201 is close to the stator 203 By controlling the power to be supplied to the 203, a suction force is generated between the stator 203 and the rotor 201 so that the rotary blade 202 may be rotated.

Therefore, since the entire area of the rotary blade 202 excluding the central axis 207 is the air flow range, the air flow area is increased to increase the ventilation efficiency.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims below and equivalents thereof.

As a result, according to the fan motor structure according to the present invention the following advantages occur.

First, as the stator and the rotor are configured independently, the flow area of the air is increased by the rotor blades, thereby increasing the flow amount of air in comparison with the driving force, thereby improving the efficiency of the fan motor.

Second, since the flow of air increases, high ventilation efficiency can be obtained even if the rotational force is reduced.

Third, even if the rotor rotates at a low speed, sufficient efficiency can be obtained, so that noise due to the rotation of the rotor does not occur.

Fourth, the design process of the rotor and the stator is simplified to improve the work efficiency.

Fifth, the design work is simplified to reduce the defective rate.

Sixth, the rotor and the stator are positioned at sufficient intervals, it is easy to remove when the rotation failure due to dust, dirt, and the like. Therefore, stable rotational motion can be maintained at all times.

Seventh, there is no fear of overload of the motor due to poor rotation, it is safe and can ensure the stable operation of the fan motor.

Eighth, since there are no components other than the rotating shaft around the rotating shaft, the supporting means for supporting the rotating shaft is simplified.

Ninth. Even if the rotor blade is rotated at a low speed, a large ventilation efficiency can be obtained as compared with the fan motor of the same standard, so that a low noise fan motor can be designed. Therefore, it can be effectively applied to products requiring low noise, such as fan motors for air conditioners, hair dryers, fans, and the like.

Tenth, since the additional obstacles to the rotating shaft, such as power wiring is removed, it is possible to manufacture a variety of models and types of fan motor, it can meet the needs of various consumers.

Finally, it can be manufactured in a completely sealed structure, which is very efficient when applied to a system that controls the flow of gas and liquid in the pipe.

Claims (8)

In a fan motor including a fan housing including a rotating shaft is formed to accommodate the rotary blades and is fixed to a substantially central portion of the receiving hole, and a rotary blade coupled to the rotating shaft for free rotation: A plurality of rotors made of permanent magnets are installed on the rotor blades, and at least one stator is embedded in the fan housing such that the rotors are opposed at an arbitrary position when the rotors are rotated. And a sensor portion is embedded in the fan housing spaced from the stator to detect the magnetic field of an adjacent rotor when the stator is magnetized and the rotor is positioned at a point opposite the stator. The method of claim 1, wherein the rotor, Fan motor structure, characterized in that bonded to the end of the rotary blade by an adhesive member. The method of claim 1, A receiving groove of a predetermined size is cut in the end portion of the rotary blade, and the rotor is a fan motor structure, characterized in that coupled to the state accommodated in the receiving groove. The method of claim 1, wherein the stator, It is installed to have a predetermined inclination with the rotor in the rotation direction of the rotor, when the power is applied when the rotor is located at the point opposite to the stator is magnetized to the same polarity of the rotor to generate a repulsive force Fan motor structure characterized in that for rotating the rotor. The method of claim 1, wherein the stator, It is installed to have a predetermined inclination with the rotor in the opposite direction to the rotation direction of the rotor, when the power is applied when the rotor reaches a point adjacent to the stator is magnetized to a different polarity with the rotor and suction force Fan motor structure, characterized in that to rotate the rotor by generating a. The method according to claim 4 or 5, wherein the sensor unit, When the magnetic force is detected by the rotor is supplied to the power supply to the stator, and if the rotor is rotated and the magnetic force of the rotor is not detected, the fan motor structure characterized in that the power supplied to the stator . The method of claim 6, wherein the sensor unit, It is composed of at least one switching element so as to correspond to the magnetic Hall element and the stator one-to-one, the switching element is turned as the sensor unit is within the magnetic field range of the rotor and the magnetic force generated in the rotor is transmitted to the Hall element -Turned on to supply the power to the stator fan motor structure. The method of claim 1, wherein the stator, Fan motor structure, characterized in that embedded in the same number as the plurality of rotors installed on the rotary blade, the plurality of stators are arranged at equal intervals.