KR101470416B1 - blower - Google Patents

Abstract

The present invention relates to a blower, and more particularly, to a blower comprising: an enclosed case formed with a suction port for sucking air in a central portion thereof and having a discharge port communicating with an internal space to discharge air; A rotation shaft installed vertically inside the case to rotate the rotation shaft; A hollow bearing housing provided on an outer periphery of the rotary shaft and having a bearing for supporting the rotary shaft fixed; An electromagnet for providing a magnetic force outside the bearing housing; An electromagnet installed between the electromagnet and the bearing housing to insulate the electromagnet; An impeller fixed to the rotating shaft and rotating; A magnet installed on the impeller and rotating the impeller to generate a force or a repulsive force by the electromagnet; And an insertion hole formed horizontally below the impeller for inserting the bearing housing or the yoke, and a Hall element for sensing a position of the electromagnet or the magnet and a driving element for driving the electromagnet are mounted And a substrate, wherein the substrate is mounted on the lower surface of the Hall element and the driving element, and is mounted on the opposite side of the impeller.

Description

Blower

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower, and more particularly, to a flat-type blower having a thin thickness.

A blower is a general term for a device that generates and discharges wind by a motor, and is used in various fields such as exhaust, cooling of a machine, and a hair dryer.

In recent years, the blower has been applied to vehicles and provides air to a seat in a room to provide a comfortable driving environment.

As shown in FIGS. 1 to 4, such a blower is provided with a suction port 1a through which air is sucked in the central portion thereof, and a discharge port 1b communicating with the inner space and discharging air, )Wow; A rotation shaft 3 installed vertically inside the case 1 and rotating; A bearing B installed at the outer circumference of the rotary shaft 3; A hollow bearing housing (4) fixed to the inner periphery of the bearing (B); A core (6) having a coil (8) wound around the bearing housing (4) to provide a magnetic force; (7) installed between the core (6) and the bearing housing (4) to insulate the coil (8) or the core (6); An impeller 5 fixed to the rotary shaft 3 and rotating; A magnet (9) installed on the impeller (5) to generate attraction or repulsive force by the magnetic force of the coil (8) to rotate the impeller (5); And an insertion hole 2c which is installed horizontally below the impeller 5 and into which the bearing housing 4 and the insulation 7 are inserted and the core 6 and the magnet 9 And a substrate 2 on which a driving element 2b for supplying power to the coil 8 to drive the impeller 5 is mounted.

In the conventional blower as described above, as the magnetic force is generated in the coil 8 by the driving element 2b of the substrate 2, the magnet 9 generates an attractive force or a repulsive force to move the impeller 5 The impeller 5 sucks air into the inlet 1a of the case 1 and discharges air through the outlet 1b.

However, in the conventional blower, as shown in FIG. 1, the Hall element 2a and the driving element 2b are installed on the substrate 2 to face the impeller 5. Therefore, there is a problem that the hall element 2a and the driving element 2b generate noises due to the air generated when the impeller 5 rotates, and the height H of the case 1 is increased The miniaturization of the case 1 is hindered.

The insertion holes 2c formed in the substrate 2 are formed in a circular shape as shown in FIG. 2, so that the substrate 2 is moved in the circumferential direction Therefore, there is a problem that the coil device 8 and the magnet 9 can not be precisely detected because the position of the Hall element 2a is not properly positioned.

Particularly, since the bearing housing 4 is press-fitted into the insertion hole 2c as shown in FIG. 1, the board 2 can not be precisely fixed at the time of assembly.

In addition, since the substrate 2 is formed of a metal PCB so as to dissipate heat of the driving element 2b and the Hall element 2a, the cost of the substrate 2 is excessively increased. When the substrate 2 is formed of a general PCB to reduce the thickness of the case 1, the heat dissipating fins should be installed inside the case 1 so that the case 1 is uneven or the overall weight is increased by the heat dissipating fins It is not possible to try because problems arise.

Also, as shown in FIG. 4, the discharge port 1b has a problem that some of the discharged air forms a dead zone DZ which is destroyed by a differential pressure due to the rotation of the impeller 5, There is a problem in that a loss of the signal is generated.

Disclosure of Invention Technical Problem [8] The present invention provides a blower capable of preventing noise from being generated by air generated in a case by disposing elements mounted on a substrate opposite to an impeller, and reducing a height of a case.

The present invention also provides a blower capable of easily assembling a substrate with a member for centering the substrate in place when the substrate is assembled, and more particularly, to precisely positioning the substrate accurately.

In addition, the heat generated from the substrate can be dissipated from the inside of the case. In particular, heat can be dissipated from the discharge port of the case, the heat dissipating area can be structurally expanded to maximize heat dissipation, A blower capable of dispersing air to prevent occurrence of a dead zone is provided.

And a blower capable of locally reducing the thickness of the case to accommodate elements mounted on the substrate on the inner surface of the case.

According to an aspect of the present invention, there is provided an air conditioner comprising: a case having a suction port formed with a suction port for sucking air in a central portion thereof and having a discharge port communicating with an inner space to discharge air; A rotation shaft installed vertically inside the case to rotate the rotation shaft; A hollow bearing housing provided on an outer periphery of the rotary shaft and having a bearing for supporting the rotary shaft fixed; An electromagnet for providing a magnetic force outside the bearing housing; An electromagnet installed between the electromagnet and the bearing housing to insulate the electromagnet; An impeller fixed to the rotating shaft and rotating; A magnet installed on the impeller and rotating the impeller to generate a force or a repulsive force by the electromagnet; And an insertion hole formed horizontally below the impeller for inserting the bearing housing or the yoke, and a Hall element for sensing a position of the electromagnet or the magnet and a driving element for driving the electromagnet are mounted A substrate is provided with a blower.

And the substrate is mounted on the lower surface of the impeller, and the Hall element and the driving element are mounted on the opposite side of the impeller.

The substrate may be a PCB.

A key groove is formed on an outer periphery of the insert hole, and the key top is key-engaged with the key groove, thereby positioning the substrate in the case.

And the key of the paraphrase association is press-fitted and fixed in the bearing housing so as to press outwardly, or the boss of the case presses outwardly so as to be constrained to the keyway.

The present invention is further characterized by a heat sink attached to an inner surface of the case and adapted to receive the heat of the driving element or heat the heat sink.

The heat sink is formed in a strip shape so as to be attached from a lower portion of the substrate to the discharge port of the case.

The heat dissipation plate may further include a radiating fin formed to be bent in a zigzag shape at a portion where the discharge port is located to enlarge the surface area.

The radiating fins may include a plurality of radiating fins along a cross-sectional area of the discharging opening to disperse air discharged through the discharging opening.

The case may further include a groove sheet formed on an inner surface of the substrate and opposed to the hole or the driving element of the substrate, the groove sheet being formed in a groove shape to receive the hole or the driving element.

In the blower of the present invention as described above, elements mounted on a substrate are disposed on the opposite side of the impeller, noise generated by air generated inside the case can be prevented, and the height of the case can be reduced.

In addition, there is a member for centering the substrate at the time of assembling the substrate, so that the substrate can be easily assembled, and in particular, the substrate can be precisely positioned.

In addition, the heat generated from the substrate can be dissipated from the inside of the case. In particular, heat can be dissipated from the discharge port of the case, the heat dissipating area can be structurally expanded to maximize heat dissipation, It is possible to disperse the air to prevent occurrence of a dead zone.

In addition, the thickness of the case is locally reduced, so that the elements mounted on the substrate can be accommodated in the inner surface of the case.

1 is a cross-sectional view showing a conventional blower,
2 is a plan view of a substrate provided in a conventional blower,
3 is a perspective view showing a conventional blower,
4 is a plan sectional view showing a conventional blower,
5 is a sectional view showing a blower according to the present invention,
6 is a plan view of a substrate provided in the blower according to the present invention,
7 is a partially cutaway perspective view of the blower according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted.

FIG. 5 is a cross-sectional view of a blower according to the present invention, FIG. 6 is a plan view of a substrate installed in a blower according to the present invention, and FIG. 7 is a partially cutaway perspective view of a blower according to the present invention.

The blower according to the present invention includes a case 50, a rotating shaft 61, a housing 62, an insulation 63, an impeller 91, a magnet 92 and a substrate 70 as shown in Fig. 5 do.

5 and 7, the case 50 is formed with a suction port 50a through which air is sucked in the central portion thereof. The discharge port 50b communicates with the inner space and discharges air. to be. That is, as shown in FIGS. 5 and 7, the case 50 is a closed tube having a space inside, and both sides are ventilated by the suction port 50a and the discharge port 50b. The case 50 may have a discharge port 50b protruding at one side thereof in the form of a duct, or may be formed in a hole shape.

The rotating shaft 61 is a member vertically installed in the case 50 and rotating as shown in FIG. The rotating shaft 61 is vertically installed at the center of the case 50, as shown in FIG.

As shown in FIG. 5, the bearing housing 62 is a hollow member which is installed on the outer circumference of the rotating shaft 61 and is fixed to a bearing B for supporting the rotating shaft 61.

5, the bearing housing 62 is fitted into the boss of the case 50 and is fixed to the bearing 50. The bearing B, which rotatably supports the outer circumference of the rotation shaft 61, Lt; / RTI >

5, the bearing housing 62 is formed with a step at its inner periphery to fix the bearing B in a locked state, and a seating jaw on which the core 64a to be described later is seated is formed on the outer periphery .

The electromagnet (64) is a component that provides magnetic force outside the bearing housing (62). As shown in FIG. 5, the electromagnet 64 includes a core 64a composed of a plurality of magnetic metal plates and a coil 64b wound on the core 64a. When electric power is applied to the coil 64b, Generate magnetic force.

The insulation connection 63 is a member installed between the electromagnet 64 and the bearing housing 62 to insulate the electromagnet 64 as shown in FIG. As shown in FIG. 5, the insulation connection 63 is formed in a tubular shape and is fitted to the outer circumferential surface of the bearing housing 62 to insulate the electromagnet 64.

The impeller 91 is fixed to the rotating shaft 61 and rotates as shown in FIG. The impeller 91 may be a centrifugal fan such as a sirocco fan as shown in FIG.

The magnet 92 is installed on the impeller 91 as shown in FIG. 5, and faces the electromagnet 64. The magnet 92 generates an attractive force or a repulsive force by the electromagnet 64 to rotate the impeller 91.

Here, the impeller 91 and the magnet 92 described above are the rotor 90 that rotates inside the case 50. The electromagnet 64 described above is a stator fixed inside the case 50. [

The substrate 70 is horizontally installed inside the case 50 as shown in FIG. The substrate 70 is preferably installed horizontally below the impeller 91 as shown. At this time, the substrate 70 is installed on the bottom surface of the case 50 as shown in FIG. 5,

5 and 6, an insert hole 70c into which the bearing housing 62 or the insulation joint 63 is inserted is formed, for example, And a Hall element 70b for sensing the position of the electromagnet 64 or the magnet 92 and a driving element 70a for driving the electromagnet 64 are mounted.

 5, the Hall element 70b and the driving element 70a are mounted on the lower surface of the substrate 70 and installed on the opposite side of the impeller 91. The substrate 70 is spaced apart from the bottom surface of the case 50 as the Hall element 70b or the driving element 70a is seated on the bottom surface of the case 50 as shown in FIG. .

5, a grooved groove sheet G is formed on the inner surface of the case 70 opposite to the hole element 70b or the driving element 70a of the substrate 70 Thereby accommodating the Hall element 70b and the driving element 70a in the groove sheet G. [

Therefore, the hole 50a is accommodated in the region where the thickness T is locally reduced by the groove sheet G, so that the overall height H can be reduced As a result, it is not only possible to manufacture in a compact size, but also the weight is reduced.

6, a keyway 70d is formed on the outer periphery of the insertion hole 70c. 5, a key 63a (see FIG. 6) that is key-engaged with the key groove 70d to position the substrate 70 in the interior of the case 50 Is formed.

The key 63a is inserted into the key groove 70d at the time of assembling the insulation joint 63 and spaced apart from the inner circumference of the key groove 70d as shown in FIG. Accordingly, the substrate 70 can flow to the left and right as long as the gap is formed.

6, the bearing housing 62 is press-fitted and fixed to the insulating joint 63 so that the bearing housing 62 is pressed outward or the bearing housing 62 is pressed As the boss pushes outwardly, it is forced into the key groove 70d. At this time, the key 63a is completely in close contact with the inner circumference of the key groove 70d as shown in FIG. Accordingly, the key 63a prevents the substrate 70 from flowing to the left and right.

Meanwhile, the case 50 is provided with a heat dissipating member 40 as shown in FIGS. 5 and 7, the heat dissipating member 40 is attached to the inner surface of the case 50 to transmit the heat of the Hall element 70b or the driving element 70a of the substrate 70 And a heat radiating plate 41 for radiating heat.

5, the heat dissipating plate 41 is installed on the groove sheet G and closely contacted with the hole element 70b and the driving element 70a accommodated in the groove sheet G. Accordingly, the heat dissipating plate 41 receives the heat of the Hall element 70b and the driving element 70a and radiates heat.

The heat dissipation plate 41 may be formed in a band shape as shown in FIG. 7, for example, to be attached from the lower portion of the substrate 70 to the discharge port 50b of the case 50.

The heat dissipation member 40 may further include a heat dissipation fin 42 connected to the heat dissipation plate 41 and bent in a zigzag shape to enlarge the surface area, as shown in FIG. The heat dissipation fins 42 are preferably formed at the end of the heat dissipation plate 41 as shown in FIG. 7 for the purpose of heat radiation efficiency, and are located inside the ejection outlets 50b.

As shown in FIG. 7, the heat dissipation fins 42 may be configured to disperse the air exhausted through the ejection openings 50b in a plurality of sections along the cross-sectional area of the ejection openings 50b. Accordingly, since the discharged air is dispersed by the radiating fin 42, the conventional dead zone is not generated.

Hereinafter, the operation of the blower according to the present invention will be described.

5, when a magnetic force is generated in the coil 64b installed in the case 50, the magnet 92 generates an attractive force or a repulsive force. At this time, the substrate 70 generates electric power by supplying electric power to the coil 64b through the driving element 70a.

The impeller 91 is rotated together with the rotating shaft 61 supported by the bearing B in a state where the impeller 91 is fixed to the rotating shaft 61 by the attraction force or the repulsive force of the magnet 92. The impeller 91 rotates while sucking air into the suction port 50a of the case 50 and discharging the air through the discharge port 50b of the case 50 as shown in FIG.

5, since the Hall element 70b and the driving element 70a are mounted on the lower side of the substrate 70 opposite to the impeller 91, 70b and the driving element 70a from the air by the impeller 91. Therefore, the substrate 70 can prevent the hall element 70b and the driving element 70a from generating noise while being in contact with air.

In addition, since the substrate 70 is formed of a PCB, the manufacturing cost of the substrate 70 can be reduced.

6, since the key 63a of the insulating pipe 63 is inserted into the key groove 70d of the substrate 70, And the key 63a is pushed outward by the bearing housing 62 or the boss of the case 50 to be press-fitted into the insulation 63, It is possible to completely prevent the substrate 70 from flowing right and left due to the elimination of the air gap while being pressed into the key groove 70d and to precisely fix the substrate 70 to a predetermined position.

Also, since the heat sink 41 dissipates the heat of the substrate 70, the heat of the substrate 70 can be dissipated even if the substrate 70 is made of PCB.

5 and 7, the heat dissipation plate 41 can be extended substantially to the heat dissipation area, and the heat dissipation plate 41 can be electrically connected to the Hall element 70b and the driving element 70a, the heat of the substrate 70 can be easily recovered.

7, since the heat radiating plate 41 is extended to the discharge port 50b of the case 50, the heat can be cooled using the air discharged through the discharge port 50b.

7, since the heat dissipation fin 42 is formed on the heat dissipation plate 41 as shown in FIG. 7, the heat of the substrate 70 can be easily cooled, and the heat dissipation fin 42 can have a cross- It is possible to disperse the air discharged through the discharge port 50b to prevent a dead zone from being formed.

Since the hole element 70b and the driving element 70a are seated on the groove sheet G of the case 50 so that the overall height of the case 50 can be reduced, Can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various changes, substitutions, and alterations can be made therein without departing from the spirit of the invention.

40; A radiation member 41; Heat sink
42; A radiating fin 50; case
50a; Suction port 50b; Outlet
60; A stator 61; Rotating shaft
62; Bearing housing 63; Paraphrase
63a; Key 64; Electromagnet
64a; Core 64b; coil
70; Substrate 70a; Driving element
70b; Hall element 70c; Insert ball
70d; A key groove 90; Rotor
91; Impeller 92; Magnet

Claims (7)

An airtight case formed with a suction port for sucking air in a central portion thereof and having a discharge port communicating with an inner space for discharging air;
A rotation shaft installed vertically inside the case to rotate the rotation shaft;
A hollow bearing housing provided on an outer periphery of the rotary shaft and having a bearing for supporting the rotary shaft fixed;
An electromagnet for providing a magnetic force outside the bearing housing;
An electromagnet installed between the electromagnet and the bearing housing to insulate the electromagnet;
An impeller fixed to the rotating shaft and rotating;
A magnet installed on the impeller and rotating the impeller to generate a force or a repulsive force by the electromagnet; And
A Hall element installed horizontally below the impeller and formed with an insertion hole into which the bearing housing or the yoke is inserted, a Hall element for sensing the position of the electromagnet or the magnet, and a driving element for driving the electromagnet And a mounting substrate,
Wherein the substrate is mounted on the lower surface of the hole element and the driving element and is disposed on the opposite side of the impeller,
Wherein the substrate has a key groove formed on an outer periphery of the insertion hole, and the key top is key-engaged with the key groove to fix the substrate in the case. delete The method according to claim 1,
And a heat sink attached to an inner surface of the case and adapted to receive and dissipate the heat of the substrate or the driving element of the substrate. The method of claim 3,
Wherein the heat sink is formed in a strip shape so as to be attached from a lower portion of the substrate to the discharge port of the case. The method of claim 3,
Wherein the heat dissipation plate further includes a heat dissipation fin formed to be bent in a zigzag shape at a portion where the discharge port is located to enlarge the surface area. The method of claim 5,
Wherein the radiating fins are divided into a plurality of sections along the cross-sectional area of the discharge port to disperse air discharged through the discharge port. An airtight case formed with a suction port for sucking air in a central portion thereof and having a discharge port communicating with an inner space for discharging air;
A rotation shaft installed vertically inside the case to rotate the rotation shaft;
A hollow bearing housing provided on an outer periphery of the rotary shaft and having a bearing for supporting the rotary shaft fixed;
An electromagnet for providing a magnetic force outside the bearing housing;
An electromagnet installed between the electromagnet and the bearing housing to insulate the electromagnet;
An impeller fixed to the rotating shaft and rotating;
A magnet installed on the impeller and rotating the impeller to generate a force or a repulsive force by the electromagnet; And
A Hall element installed horizontally below the impeller and formed with an insertion hole into which the bearing housing or the yoke is inserted, a Hall element for sensing the position of the electromagnet or the magnet, and a driving element for driving the electromagnet And a mounting substrate,
Wherein the substrate is mounted on the lower surface of the hole element and the driving element and is disposed on the opposite side of the impeller,
Wherein the case further comprises a groove sheet formed on an inner surface of the substrate and opposed to the hole or the driving element of the substrate and formed in a groove shape to receive the hole or the driving element.

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