WO2019231200A1

WO2019231200A1 - Multi-fan unit

Info

Publication number: WO2019231200A1
Application number: PCT/KR2019/006347
Authority: WO
Inventors: 이정훈
Original assignee: 주식회사 아모텍
Priority date: 2018-05-29
Filing date: 2019-05-28
Publication date: 2019-12-05
Also published as: KR102499298B1; KR20190135664A

Abstract

The present invention comprises: a rotary shaft rotatably mounted in a housing; a motor unit located in the housing and rotating the rotary shaft; a first impeller mounted on the rotary shaft and vacuum suctioning the outside air in engagement with the rotation of the rotary shaft; a second impeller mounted on the rotary shaft and blowing air to an air conditioner in engagement with the rotation of the rotary shaft; a clutch unit mounted on the rotary shaft and at least one of the first and second impellers and selectively transferring the power of the rotary shaft to either the first impeller or the second impeller in accordance with the rotation direction of the rotary shaft; and a fixing flange which is mounted between a first space, in which the first impeller is provided, and a second space, in which the second impeller is provided, to partition the two spaces, and on which a motor drive is mounted, thereby enabling any one of the first impeller and the second impeller to be selectively driven by using a single motor unit.

Description

Multi Fan Unit

The present invention relates to a multi-fan unit that implements a blower fan for an air conditioner and a blower fan for a vacuum cleaner.

In general, an automobile is equipped with an air conditioner for cooling and heating the room. The vehicle air conditioner is provided with a heating device for supplying warm air to the room for heating, a cooling device for supplying the cooled air for cooling to the room, and a blowing fan for forcibly blowing air into the room.

As described in Korean Patent Publication No. 10-1493267 (March 02, 2015), a blowing fan of a vehicle air conditioner is installed in an air duct for supplying air to a room to circulate indoor air or to supply air to the outside. do.

Recently, a separate vacuum cleaner motor is provided inside the vehicle to remove dust or foreign matter from the inside of the vehicle. However, if the vehicle air conditioner fan and the vacuum cleaner fan are provided separately, the structure may be complicated.

An object of the present invention is to provide a multi-fan unit that can drive the first impeller and the second impeller with a single motor.

Another object of the present invention is to partition between the first impeller and the second impeller by using a fixing flange for fixing the multi-fan unit, and can be utilized as a space for installing the motor drive, the existing partition plate and the motor drive installation space is unnecessary It is to provide a multi-fan unit.

Another object of the present invention is to provide a multi-fan unit in which a sub blade is formed in the impeller to perform a motor driver cooling operation.

In order to solve the above problems, the present invention is a rotary shaft rotatably installed in the housing, a motor unit disposed in the housing to rotate the rotary shaft, and installed on the rotary shaft in conjunction with the rotation of the rotary shaft to vacuum the outside air A first impeller for suction, a second impeller installed on the rotary shaft and blown air to an air conditioner in association with rotation of the rotary shaft, and installed on at least one of the rotary shaft and the first and second impellers, A clutch unit for selectively transmitting power of the rotating shaft to any one of the first impeller and the second impeller according to the rotation direction, and between the first space in which the first impeller is installed and the second space in which the second impeller is installed. Fixing flange to fix the multi-fan unit is installed to partition between the two spaces and use as a space for the motor drive.

The housing may be connected to a drive housing in which a motor drive is built in one side, a fan housing in which a first impeller is built in the other side thereof, and the fixing flange may be fixed to an outer surface of the drive housing.

Cooling fins for radiating heat generated from the motor drive may be formed on an outer surface of the drive housing.

The second impeller includes a hub on which the rotating shaft is disposed, and a main blade formed on an outer surface of the hub to blow air to an air conditioner, and forming a sub blade on one side of the hub to blow air to cool the motor drive. can do.

An air discharge port may be formed at a side surface of the housing to guide the air generated by the first impeller to the motor unit and the motor drive to cool the motor unit and the motor drive.

The clutch unit is installed between the first impeller and the rotary shaft, the first one-way clutch unit for transmitting the rotational force of the rotary shaft to the first impeller when the rotary shaft is rotated in the first direction, and is installed between the second impeller and the rotary shaft When the rotating shaft is rotated in the second direction may include a second one-way clutch unit for transmitting the rotational force of the rotating shaft to the second impeller, between the first impeller and the first one-way clutch unit and between the second impeller and the second circle The D cut ring may be mounted between the way clutch units.

As described above, in the present invention, the first impeller for vacuum suction and the second impeller for the air conditioner are installed in one motor unit, and the first impeller and the second impeller are selectively rotated so that the vacuum suction is performed in one fan unit. Blowing fan and air conditioning fan can be implemented.

In addition, a fixing flange for fixing the multi-fan unit is provided between the first space in which the first impeller is installed and the second space in which the second impeller is installed to partition the two spaces, and the motor drive is installed. It can be used as a space to become.

In addition, one of the first impeller and the second impeller may be provided with a sub blade to blow air to the motor driver to perform a cooling operation of the motor drive.

1 is a cross-sectional view of a multi-fan unit according to an embodiment of the present invention.

2 is an operating state diagram of a multi-fan unit according to an embodiment of the present invention.

Figure 3 is a cross-sectional view showing a fixing structure of the impeller and the one-way clutch unit of the multi-fan unit according to an embodiment of the present invention.

4 is a cross-sectional view of a multi-fan unit according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the size or shape of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms that are specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. Definitions of these terms should be made based on the contents throughout the specification.

Referring to FIG. 1, the multi-fan unit of the present invention includes a rotating shaft 20 rotatably mounted to the housing 10, a motor unit 30 for rotating the rotating shaft 20 when power is applied, and a rotating shaft 20. A first impeller 40 disposed on one side of the blower to blow air for vacuum suction, a second impeller 50 disposed on the other side of the rotary shaft 20 to blow air for the air conditioner, and a rotating shaft 20 and the first The clutch unit 60 is installed between the first impeller 40 and the second impeller 50 to selectively transmit the rotational force to the rotating shaft 20 to any one of the first impeller 40 and the second impeller 50. It may include.

The first impeller 40 is connected to a vacuum cleaner for vacuum cleaning the inside of the vehicle to generate a vacuum suction force for sucking dust and foreign matter, and when rotated in one direction, it may generate a blowing force and be connected to the vacuum duct.

And the second impeller 50 is installed in the air duct for blowing the air for the air conditioner of the vehicle, and when rotated in the opposite direction to the first impeller 40 may generate a blowing force and may be connected to the air conditioner duct.

The first impeller 40 is installed in the first space 200 for the vacuum suction, the second impeller 50 is installed in the second space 300 for blowing air for the air conditioner, and the first and second The fixing flange 100 may be installed between the first space 200 and the second space 300 so that the

spaces

200 and 300 may be installed separately from each other.

The fixing flange 100 fixes the multi-fan unit at an installation place, and includes a first space 200 in which the first impeller 40 is installed, and a second space 300 in which the second impeller 50 is installed. Can serve as a partition plate to partition between.

That is, the fixing flange 100 is disposed between the first space 200 and the second space 300 to serve to fix the multi-fan unit and to divide the two

spaces

200 and 300. As a result, a separate partition plate for partitioning the two

spaces

200 and 300 is unnecessary.

The fixing flange 100 may be mounted with a drive housing 112 in which the motor drive 110 for controlling power of the motor unit 30 and for supplying power is embedded therein. The fixing flange 100 may be mounted on an outer surface of the drive housing 112.

As such, since the motor drive 110 is installed on the fixing flange 100, a separate space for installing the motor drive is unnecessary, so that the space utilization can be increased, and the overall size can be reduced.

The motor unit 30 includes a stator 32 fixed to an inner surface of the housing 10 and a rotor 34 having a predetermined gap on the inner surface of the stator 32 and fixed to the rotation shaft 20. It may include.

The housing 10 is connected to a drive housing 112 in which the motor drive 110 is stored at one side thereof, and a fan housing 42 in which the first impeller 40 is received at the other side thereof is connected to the drive housing 112. Fixing flange 100 may be fixed to the outer surface of the. In addition, a bearing 22 for rotatably supporting the rotation shaft 20 may be mounted in the housing 10.

Cooling fins 114 for quickly dissipating heat generated from the motor drive 110 may be formed on an outer surface of the drive housing 112.

The first impeller 40 is disposed on the rotating shaft 20, and the air is sucked in the axial direction and the air is discharged in the radial direction. An air inlet 44 through which air is sucked is formed in the center of the fan housing 42. In addition, a vacuum suction duct 46 may be connected to the air intake 44.

Air sucked into the vacuum suction duct 46 by the first impeller 40 performs the cooling operation of the motor unit 30 while passing through the motor unit 30, and again passes through the motor drive 110. The drive 110 may perform cooling.

That is, as shown in Figure 2, the air sucked into the vacuum suction duct 46 is discharged in the lateral direction of the first impeller 40, the air discharged in the lateral direction of the first impeller 40 is a fan The housing 42 is guided to the rear surface of the first impeller 40 and passes through the motor portion 30 to cool the motor portion 30. Air passing through the motor unit 30 may be in contact with the motor drive 110 to cool the motor drive 110, and may be discharged to the outside through a discharge port 120 formed at a side surface of the housing 10. .

As such, when the first impeller 40 is driven, air discharged from the first impeller 40 may be supplied to the motor drive 110 to perform a cooling operation of the motor drive 110.

The second impeller 50 has a hub 52 in which the rotating shaft 20 is disposed, a main blade 54 formed on an outer surface of the hub 52 to generate air blowing force, and one end of the hub 52. The sub blade 56 may be formed to blow air for cooling the motor drive 110.

When the second impeller 50 is rotated, the sub blade 56 may blow air in the axial direction to cool the motor drive 110 disposed below the second impeller 50.

That is, when the first impeller 40 is driven, air passing through the first impeller 40 is supplied to the motor drive 110 to perform the cooling operation of the motor drive 110, and the second impeller 50 is When driven, the air is blown from the sub blade 56 formed in the second impeller 50 to the motor drive 110 to perform a cooling operation of the motor drive 110.

The clutch unit 60 is installed between the first impeller 40 and the rotation shaft 20, and when the rotation shaft 20 rotates in the first direction, the first transmission unit transmits the rotational force of the rotation shaft 20 to the first impeller 40. Installed between the one-way clutch unit 62 and the second impeller 50 and the rotating shaft 20, when the rotating shaft 20 rotates in the second direction, the rotational force of the rotating shaft 20 is transmitted to the second impeller 50. It may include a second one-way clutch unit 64.

The first one-way clutch unit 62 and the second one-way clutch unit 64 transmit power only in one direction and do not transmit rotational force when rotated in the opposite direction, and the first one-way clutch unit 62. The power may be transmitted when the first direction rotates, and the second one-way clutch unit 64 may have a structure where the power is transmitted when the second direction rotates.

Since the first impeller 40 and the second impeller 50 are formed of a resin material, the first impeller 40, the second impeller 50, the first one-way clutch unit 62, As the fixing part of the second one-way clutch unit 64 becomes loose, there is a problem that power transmission is not smoothly performed.

In this embodiment, as shown in FIG. 3, one side between the first impeller 40 and the first one-way clutch unit 62 and between the second impeller 50 and the second one-way clutch unit 64. Mounting the D-cut ring 130 of the planar shape can be made to transmit power accurately.

As such, the operation of the multi-fan unit according to the embodiment of the present invention configured will be described below.

In the vacuum cleaner operation mode, the motor drive 110 rotates the motor unit 30 in the forward direction. Then, the rotating shaft 20 is rotated in the first direction, and the rotational force of the rotating shaft 20 is transmitted to the first impeller 40 according to the operation of the first one-way clutch unit 62 to rotate the first impeller 40. Suction force can be generated for vacuum cleaning.

At this time, the second impeller 50 does not rotate according to the operation of the second one-way clutch unit 64.

Then, the air generated in the first impeller 40 passes through the motor unit 30 to perform the cooling operation of the motor unit 30, and is supplied to the motor drive 110 to perform the cooling operation of the motor drive 110. After performing it may be discharged to the outside through the discharge port 120 formed on the side of the housing.

In the air conditioner operating mode, the motor drive 70 rotates the motor unit 30 in the reverse direction. Then, the rotating shaft 20 is rotated in the second direction, and the rotational force of the rotating shaft 20 is transmitted to the second impeller 50 by the operation of the second one-way clutch unit 64 to rotate the second impeller 50. It is possible to blow air-conditioned air into the room.

At this time, the first impeller 40 does not rotate according to the operation of the first one-way clutch unit 62.

In addition, while the sub blade 56 formed integrally with the second impeller 50 is rotated, air may be blown to the motor drive 110 to perform a cooling operation of the motor drive 110.

As shown in FIG. 4, the multi-fan unit according to another embodiment includes a rotating shaft 20 rotatably mounted to the housing 10 and a rotating shaft 20 disposed inside the housing 10 and applied with power. The motor unit 30 to be rotated, the first impeller 40 is fixed to one side of the rotary shaft 20 and rotated together with the rotary shaft 20 to suck the outside air, and the other side of the rotary shaft 20, the air conditioner It is installed between the second impeller 50 and the rotary shaft 20 and the second impeller 50 to blow air to the rotary shaft 20 when the rotary shaft 20 is rotated in the second direction, the second impeller ( It may include a second one-way clutch unit 64 to transmit to 50.

The multi-fan unit according to another embodiment may have a structure in which the first impeller 40 is fixed to the rotating shaft 20 to rotate together with the rotating shaft 20.

That is, the first impeller 40 may be integrally formed on the rotary shaft 20 by insert injection into the rotary shaft 20 or fixed to the rotary shaft 20 by another fixing structure to be rotated together with the rotary shaft.

Since the one-way clutch unit is expensive, it may cause a problem of increased cost when used in the first impeller 40 and the second impeller 50. Therefore, in another embodiment, the first impeller 40 may be fixed to the rotating shaft 20 to reduce costs by removing one one-way clutch unit. In addition, since the load of the first impeller 40 is much smaller than that of the second impeller 50, the motor unit 30 may be driven even when the motor unit 30 simultaneously drives the first impeller 40 and the second impeller 50. ) Does not increase significantly.

In the multi-fan unit according to another embodiment as described above, when the motor unit 30 is rotated in the first direction, the first impeller 40 may be rotated together with the rotation shaft 20 to suck the air in a vacuum.

When the motor unit 30 is rotated in the second direction, the second impeller 50 is rotated together with the rotation shaft 20 by the operation of the second one-way clutch 64 to blow air conditioned air into the room. Can be.

In this case, since the first impeller 40 is fixed to the rotating shaft 20, the first impeller 40 is rotated together with the rotating shaft 20, but is rotated in the opposite direction so that a vacuum suction force is not generated.

While the present invention has been illustrated and described with reference to certain preferred embodiments, the invention is not limited to the embodiments described above and is commonly understood in the art to which the invention pertains without departing from the spirit of the invention. Various changes and modifications will be possible by those who have the same.

The present invention may be installed in a vehicle or a vehicle to implement a vacuum suction fan for a vacuum cleaner and a blower fan for an air conditioner as one fan to reduce manufacturing costs.

Claims

A rotating shaft rotatably installed in the housing;

A motor unit disposed in the housing to rotate the rotating shaft;

A first impeller installed on the rotary shaft to suction the outside air in cooperation with the rotation of the rotary shaft;

A second impeller installed on the rotary shaft to blow air into the air conditioner in association with the rotation of the rotary shaft;

A clutch unit installed on at least one of the rotating shaft and the first and second impellers to selectively transmit the power of the rotating shaft to any one of the first impeller and the second impeller according to the rotation direction of the rotating shaft; And

And a fixing flange installed between the first space in which the first impeller is installed and the second space in which the second impeller is installed, partitioning between the two spaces, and a motor flange mounted therein.
The method of claim 1, wherein the housing

A drive housing in which a motor drive is built in one side is connected, and a fan housing in which a first impeller is built in the other side is connected, and the fixing flange is fixed to an outer surface of the drive housing.
The multi-fan unit of claim 2, wherein a cooling fin is formed on an outer surface of the drive housing to radiate heat generated from the motor drive.
The method of claim 1, wherein the second impeller

A hub on which the rotation shaft is disposed;

A main blade formed on an outer surface of the hub to blow air to an air conditioner; And

And a sub blade formed at one side of the hub to blow air for cooling the motor drive.
The method of claim 1, wherein the housing

And a discharge port configured to guide the air generated by the first impeller to the motor unit and the motor drive to cool and discharge the motor unit and the motor drive to the outside.
The method of claim 1, wherein the clutch unit

A first one-way clutch unit installed between the first impeller and the rotating shaft to transmit the rotating force of the rotating shaft to the first impeller when the rotating shaft rotates in the first direction; And

And a second one-way clutch unit installed between the second impeller and the rotating shaft to transmit the rotating force of the rotating shaft to the second impeller when the rotating shaft is rotated in the second direction.
The multi-fan unit according to claim 6, wherein a D-cut ring is mounted between the first impeller and the first one-way clutch unit and between the second impeller and the second one-way clutch unit.
The method of claim 1, wherein the first impeller

The multi-fan unit is fixed to the rotating shaft and rotated together when the rotating shaft is rotated.
A rotating shaft rotatably supported by the housing;

A motor unit mounted to the housing to rotate a rotating shaft;

A first impeller installed on the rotating shaft to suck the outside air when the rotating shaft is rotated in the first direction;

A second impeller installed on the rotation shaft and provided with a sub blade configured to blow air to an air conditioner when the rotation shaft is rotated in a second direction, and to blow air to cool the motor drive;

A first one-way installed between the rotary shaft and the first impeller to transmit the rotating force of the rotating shaft to the first impeller when the rotating shaft is rotated in the first direction, and not to transmit the rotating force of the rotating shaft to the first impeller when the rotating shaft is rotated in the second direction Clutch bearings;

A second one-way clutch bearing installed between the rotary shaft and the second impeller and transmitting the rotational force of the rotary shaft to the second impeller when the rotary shaft is rotated in the second direction and not transmitting the rotary force of the rotary shaft when the rotary shaft is rotated in the first direction ; And

And a fixing flange installed between the first space in which the first impeller is installed and the second space in which the second impeller is installed, partitioning the two spaces, and fixing a drive housing in which the motor drive is stored. unit.