WO2014178475A1

WO2014178475A1 - Blower

Info

Publication number: WO2014178475A1
Application number: PCT/KR2013/004956
Authority: WO
Inventors: 조은상; 박상현; 이성식
Original assignee: 인지컨트롤스주식회사
Priority date: 2013-04-30
Filing date: 2013-06-05
Publication date: 2014-11-06

Abstract

The present invention relates to a blower, and the blower includes: a case having a central suction port for sucking air and a side discharge opening communicating with an inner space thereof for discharging air; a rotatable shaft vertically mounted in the case for rotating; a bearing housing mounted on the periphery of the rotatable shaft and having a fixed bearing for supporting the rotatable shaft; an electromagnet for supplying a magnetic field to the outside of the bearing housing; an insulation pipe arranged between the electromagnet and the bearing housing for insulating the electromagnet; an impeller fixed to the rotatable shaft so as to rotate; a magnet attached to the impeller so as to rotate the impeller by means of an attractive or a repulsive force produced by the electromagnet; and a substrate horizontally arranged in the lower part of the impeller and having an insertion hole for receiving the bearing housing or the insulation pipe, the substrate being provided with a Hall element for sensing the position of the electromagnet or the magnet and a drive element for driving the electromagnet.

Description

Blower

The present invention relates to a blower, and more particularly, to a flat blower having a thin thickness.

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

Recently, the blower is also applied to a vehicle to provide a comfortable driving environment by supplying air to an indoor seat.

As shown in FIGS. 1 to 4, the blower includes a suction inlet 1a through which air is sucked in a central portion, and a sealed case 1 having a discharge port 1b for discharging air by communicating with an internal space. )Wow; A rotating shaft 3 installed vertically inside the case 1 and rotating; A bearing (B) installed at an outer circumference of the rotating shaft (3); A hollow bearing housing 4 having the bearing B fixed to an inner circumference thereof; A core (6) wound around a coil (8) for providing magnetic force outside the bearing housing (4); An insulating tube (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 in the impeller (5) to generate an attractive force or repulsive force by the magnetic force of the coil (8) to rotate the impeller (5); And an insertion hole 2c installed at a lower portion of the impeller 5 in a horizontal state and into which the bearing housing 4 or the insulating tube 7 is inserted, and the core 6 or the magnet 9. And a substrate (2) on which the Hall element (2a) for sensing the position of the drive element and the driving element (2b) for supplying power to the coil (8) to drive the impeller (5) are 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 attraction force or repulsive force to lift the impeller 5. The impeller 5 sucks air into the inlet 1a of the case 1 and discharges the air through the outlet 1b.

However, in the conventional blower as described above, as shown in FIG. 1, the hall element 2a or the driving element 2b is disposed on the substrate 2 to face the impeller 5. Therefore, the Hall element 2a or the driving element 2b has a problem of generating noise by air generated when the impeller 5 rotates, and increases the height H of the case 1. Since there is a problem, miniaturization of the case 1 is inhibited.

In addition, the insertion hole 2c formed in the substrate 2 is formed in a circular shape as shown in FIG. 2 so that the substrate 2 flows in the circumferential direction as shown by the arrow when the substrate 2 is assembled. As a result, there is a problem in that it cannot be assembled at the correct position. Accordingly, the position of the hall element 2a is not corrected, and thus there is a problem in that the coil 8 or the magnet 9 cannot be accurately detected.

In particular, since the bearing housing 4 is press-fitted into the insertion hole 2c as shown in FIG. 1, the substrate 2 may not be precisely fixed in place during assembly.

In addition, since the substrate 2 is composed of a metal PCB so as to dissipate heat of the driving device 2b or the hall device 2a, the cost of the substrate 2 is excessively required. In order to reduce the configuration of the substrate 2 as a general PCB, a separate heat sink fin (not shown) must be installed inside the case (1) to increase the weight of the case (1) or increase the overall weight by the heat radiation fins. There is a problem that has not been attempted.

In addition, as shown in FIG. 4, the discharge port 1b has a problem of forming a dead zone DZ in which some air is discharged due to the differential pressure caused by the rotation of the impeller 5. There is a problem that the loss of.

The present invention provides a blower capable of preventing noise from being generated by air generated inside the case by disposing elements mounted on the substrate on an opposite side of the impeller and at the same time reducing the height of the case.

In addition, the assembly of the substrate is provided with a member for centering the substrate in place can easily assemble the substrate, in particular provides a blower that can be precisely positioned in the substrate.

In addition, the heat generated from the substrate can dissipate heat inside the case, and in particular, heat can be dissipated at the discharge port of the case, and the area where the heat is dissipated is structurally expanded to maximize heat dissipation and discharged through the discharge port Provides a blower that can disperse air to prevent the occurrence of dead zones.

It also provides a blower that can locally reduce the thickness of the case to accommodate elements mounted on the substrate on the inner surface of the case.

The present invention for achieving the above object is the air inlet is formed in the inlet is formed, the sealed case is formed in one side discharge port for discharging air in communication with the interior space; A rotating shaft installed vertically inside the case to rotate; A hollow bearing housing installed at an outer circumference of the rotating shaft and having a bearing supporting the rotating shaft; An electromagnet configured to provide a magnetic force outside the bearing housing; An insulation tube 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 so as to generate attraction or repulsive force by the electromagnet to rotate the impeller; And an insertion hole into which the bearing housing or the insulated tube is inserted and installed in a horizontal state at a lower portion of the impeller, in which a hall element for detecting a position of the electromagnet or the magnet and a driving element for driving the electromagnet are mounted. It is achieved by a blower comprising a substrate.

The substrate is characterized in that the hall element and the driving element is mounted on the lower surface and installed on the opposite side of the impeller.

The substrate is characterized in that consisting of a PCB.

The substrate is characterized in that the key groove is formed on the outer periphery of the insertion hole, the insulating tube is key-coupled to the key groove to form a key to position the substrate in the interior of the case.

The key of the insulated tube is characterized in that the bearing housing is press-fitted to the insulated tube to be pressed outward or the boss of the case is pressed outward to be fitted to the key groove.

The heat dissipation plate may be attached to an inner surface of the case to receive heat from the hall element or the driving element of the substrate to dissipate heat.

The heat sink is formed in a band shape to be attached to the discharge port of the case from the bottom of the substrate.

The heat dissipation plate may be bent in a zigzag shape in a portion where the discharge port is located to further extend the surface area; characterized in that it further comprises a.

The heat dissipation fin may be configured in plural along the cross-sectional area of the discharge port to disperse the air discharged through the discharge port.

The case may include a groove sheet formed on an inner surface thereof and facing the hall element or the driving element of the substrate and formed in a groove shape to accommodate the hall element or the driving element.

The blower of the present invention as described above has the effect of reducing the height of the case at the same time to prevent the noise generated by the air generated inside the case by placing the elements mounted on the substrate opposite the impeller.

In addition, there is provided a member for centering the substrate in place when assembling the substrate can easily assemble the substrate, in particular there is a Hyogo that can accurately position the substrate.

In addition, the heat generated from the substrate can dissipate heat inside the case, and in particular, heat can be dissipated at the discharge port of the case, and the area where the heat is dissipated is structurally expanded to maximize heat dissipation and discharged through the discharge port Dispersion of air has the effect of preventing the generation of dead zones.

In addition, by locally reducing the thickness of the case there is an effect that can accommodate the elements mounted on the substrate on the inner surface of the case.

1 is a cross-sectional view showing a conventional blower,

2 is a plan view of a substrate installed 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 cross-sectional view showing a blower according to the present invention,

6 is a plan view of a substrate installed in a blower according to the present invention;

7 is a partially cutaway perspective view of a 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, detailed descriptions of related well-known general functions or configurations are omitted.

5 is a cross-sectional view illustrating a blower according to the present invention, FIG. 6 is a plan view of a substrate installed in the blower according to the present invention, and FIG. 7 is a partially cutaway perspective view of the 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 insulating tube 63, an impeller 91, a magnet 92 and a substrate 70 as shown in FIG. do.

As shown in FIGS. 5 and 7, the case 50 has an inlet 50a through which air is sucked, and an outlet port 50b for discharging air by communicating with an internal space. to be. That is, the case 50 is a sealed container having a space therein as shown in FIGS. 5 and 7, and both sides of the case 50 are vented to the outside by the suction port 50a and the discharge port 50b. The case 50 may be formed in the discharge port 50b protrudes in one side in the form of a duct, otherwise it may be formed in a hole shape.

As shown in FIG. 5, the rotation shaft 61 is a member installed vertically in the case 50 to rotate. The rotating shaft 61 is installed vertically in the center of the case 50 as shown in FIG.

As shown in FIG. 5, the bearing housing 62 is a hollow member provided at an outer circumference of the rotation shaft 61 and to which a bearing B supporting the rotation shaft 61 is fixed.

The bearing housing 62 is formed in a cylindrical shape as shown in FIG. 5 to be fixed to the boss of the case 50 and to rotatably support the outer circumference of the rotation shaft 61. It is built.

As shown in FIG. 5, the bearing housing 62 has a stepped portion formed at an inner circumference thereof to fix the bearing B in a locked state, and a seating jaw at which the core 64a to be described below is mounted is formed at the outer circumferential edge thereof. Can be.

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

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

The impeller 91 is fixed to the rotating shaft 61, as shown in Figure 5 rotates. The impeller 91 may be configured as a centrifugal fan such as a sirocco fan as shown in FIG. 5.

The magnet 92 is installed in the impeller 91 as shown in FIG. 5 to face the electromagnet 64. The magnet 92 rotates the impeller 91 by generating attraction or repulsive force by the electromagnet 64.

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

The substrate 70 is installed in a horizontal state inside the case 50 as shown in FIG. As shown in the drawing, the substrate 70 may be installed in a horizontal state below the impeller 91. At this time, the substrate 70 is installed on the bottom surface of the case 50 slightly spaced as shown in Figure 5,

The substrate 70 may be formed of, for example, a conventional PCB, and as shown in FIGS. 5 and 6, an insertion hole 70c into which the bearing housing 62 or the insulating tube 63 is inserted is formed. The hall element 70b for detecting the position of the electromagnet 64 or the magnet 92 and the driving element 70a for driving the electromagnet 64 are mounted.

As shown in FIG. 5, the substrate 70 is mounted on the lower surface of the hall element 70b and the driving element 70a on an opposite side of the impeller 91. As illustrated in FIG. 5, 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. .

In the case 50, as shown in FIG. 5, a groove-shaped groove sheet G is formed on an inner surface of the substrate 70 facing the hall element 70b or the driving element 70a. The hole sheet 70b or the driving element 70a is accommodated in the groove sheet G.

Therefore, the case 50 has the hole height 70b or the driving device 70a accommodated in a portion where the thickness T is locally reduced by the groove sheet G, so that the overall height H may be reduced. This makes it possible to manufacture in a compact size and to save weight.

Meanwhile, as shown in FIG. 6, the substrate 70 has a key groove 70d formed at an outer circumference of the insertion hole 70c. In addition, the insulator tube 63 is enlarged in FIG. 5 and key-coupled to the key groove 70d as shown in FIG. 6 to position the substrate 70 in the case 50. ) Is formed.

The key 63a is inserted into the key groove 70d when the insulation tube 63 is assembled, and is spaced apart from the inner circumference of the key groove 70d by a gap as shown in FIG. 6. Therefore, the substrate 70 may flow from side to side as much as voids are formed.

However, as the key 63a is enlarged in FIG. 6, the bearing housing 62 is press-fitted to the insulating tube 63 to press the bearing housing 62 to the outside, or the case 50 of the case 50 may be pressed out. As the boss presses outwards, the boss is pressed into the key groove 70d. At this time, the key 63a is completely in contact with the inner circumference of the key groove 70d as shown in FIG. Thus, the key 63a prevents the substrate 70 from flowing from side to side.

On the other hand, the case 50 is provided with a heat dissipation member 40, as shown in Figs. The heat dissipation member 40 is attached to the inner surface of the case 50 as shown in FIGS. 5 and 7 to transfer heat of the hall element 70b or the driving element 70a of the substrate 70. The heat sink 41 is configured to receive and radiate heat.

In this case, as shown in FIG. 5, the heat sink 41 is installed in the groove sheet G to be in close contact with the hole element 70b or the driving element 70a accommodated in the groove sheet G. Therefore, the heat sink 41 receives heat from the hall element 70b or the driving element 70a to radiate heat.

For example, as shown in FIG. 7, the heat sink 41 may be elongated in a band shape to be attached to the discharge hole 50b of the case 50 from a lower portion of the substrate 70.

As shown in FIG. 7, 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 expand the surface area. The heat dissipation fin 42 is preferably formed at the end of the heat dissipation plate 41, as shown in Figure 7 for the heat dissipation efficiency is located inside the discharge port (50b).

As shown in FIG. 7, the heat dissipation fins 42 may be configured in plural along the cross-sectional area of the discharge port 50b to disperse the air discharged through the discharge port 50b. Therefore, the discharge port 50b does not have a conventional dead zone because the discharged air is dispersed by the heat dissipation fins 42.

Referring to the operation of the blower according to the present invention configured as described above are as follows.

According to another blower of the present invention, as shown in FIG. 5, when the magnetic force is generated in the coil 64b installed in the case 50, the magnet 92 generates attraction or repulsive force. In this case, the substrate 70 generates magnetic force by supplying power to the coil 64b through the driving device 70a.

The impeller 91 rotates together with the rotating shaft 61 supported by the bearing B while being fixed to the rotating shaft 61 by the attraction force or repulsive force of the magnet 92. As the impeller 91 rotates, as shown in FIG. 5, air is sucked into the inlet port 50a of the case 50 and discharged through the outlet port 50b of the case 50.

On the other hand, according to the present invention, since the substrate 70 is mounted on the lower side opposite to the impeller 91 as shown in FIG. 5, the Hall element 70b and the driving element 70a are mounted. 70b) and the drive element 70a are blocked from the air by the impeller 91. Accordingly, the substrate 70 may 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 composed of a PCB, the manufacturing cost of the substrate 70 can be reduced.

In addition, when the insulating tube 63 is assembled, as shown in FIG. 6, the key 63 a of the insulating tube 63 is inserted into the key groove 70 d of the substrate 70. It can be positioned in the case 50, the key (63a) is pushed out by the bearing housing 62 or the boss of the case 50 is pressed into the insulating tube 63 The substrate 70 can be completely prevented from flowing from side to side as the void is removed while being inserted into the key groove 70d, and the substrate 70 can be accurately fixed in position.

In addition, since the heat dissipation plate 41 radiates heat of the substrate 70, the heat dissipation plate 41 may radiate heat of the substrate 70 even when the substrate 70 is made of a PCB.

In addition, since the heat sink 41 is formed long in the shape of a band as shown in FIGS. 5 and 7, the heat radiation area can be substantially expanded, and the heat sink 41 is the hole element 70b or the driving element ( As it closely adheres to 70a, heat of the substrate 70 may be easily recovered.

In addition, since the heat sink 41 is extended to the discharge port 50b of the case 50 as shown in FIG. 7, heat may be cooled by using air discharged through the discharge port 50b.

In addition, since the heat dissipation fin 42 is formed on the heat dissipation plate 41, the heat of the substrate 70 can be easily cooled, and the heat dissipation fin 42 has a cross-sectional area of the discharge port 50b. Since it is formed along, it is possible to prevent the dead zone is formed by dispersing the air discharged through the discharge port (50b).

In addition, since the Hall element 70b or the driving element 70a is seated on the groove sheet G of the case 50, the overall height of the case 50 may be reduced as well as the case 50. The cost of materials can be reduced.

While specific embodiments of the present invention have been described above by way of example, these are for illustrative purposes only and are not intended to limit the protection scope of the present invention. It will be apparent to those skilled in the art that various substitutions, modifications, and changes can be made without departing from the technical spirit of the present invention.

The present invention can be applied to a miniaturized blower of a thin film type, and in particular to a blower applied to a vehicle. The present invention is also applicable to a disc driver provided with a rotor and a stator to rotate a disc such as a DVD or a CD at high speed.

Claims

An air inlet formed at a central portion thereof, the airtight case communicating with an internal space and having a discharge port configured to discharge air;

A rotating shaft installed vertically inside the case to rotate;

A hollow bearing housing installed at an outer circumference of the rotating shaft and having a bearing supporting the rotating shaft;

An electromagnet configured to provide a magnetic force outside the bearing housing;

An insulation tube 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 so as to generate attraction or repulsive force by the electromagnet to rotate the impeller; And

The substrate is installed in the lower portion of the impeller in a horizontal state, the insertion hole for inserting the bearing housing or the insulating tube is formed, the substrate is mounted with a Hall element for sensing the position of the electromagnet or the magnet and a driving element for driving the electromagnet Including;

The substrate is a blower, characterized in that the hall element and the driving element is mounted on the lower surface and installed on the opposite side of the impeller.
The method according to claim 1,

The substrate is a blower, characterized in that the key groove is formed on the outer periphery of the insertion hole, the insulating tube is key-coupled to the key groove to form a key to position the substrate in the case.
The method according to claim 1 or 2,

And a heat sink attached to an inner surface of the case and configured to receive heat from the hall element or the driving element of the substrate to radiate heat.
The method according to claim 3,

The heat sink is formed in the shape of a strip so that the blower is attached to the discharge port of the case from the bottom of the substrate.
The method according to claim 3,

The heat sink is a blower characterized in that it further comprises; a heat radiation fin to be bent in a zigzag shape in the portion where the discharge port is located to expand the surface area.
The method according to claim 1,

The heat dissipation fin is configured in plurality along the cross-sectional area of the discharge port to blow out the air discharged through the discharge port.
The method according to claim 1,

The case is formed on the inner surface, facing the hole element or the drive element of the substrate, is formed in the groove shape groove sheet for receiving the Hall element or the drive element; blower further comprising a.