KR101586670B1 - motor having cooling air path - Google Patents

motor having cooling air path Download PDF

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Publication number
KR101586670B1
KR101586670B1 KR1020150112930A KR20150112930A KR101586670B1 KR 101586670 B1 KR101586670 B1 KR 101586670B1 KR 1020150112930 A KR1020150112930 A KR 1020150112930A KR 20150112930 A KR20150112930 A KR 20150112930A KR 101586670 B1 KR101586670 B1 KR 101586670B1
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KR
South Korea
Prior art keywords
housing
stator
rotor
air
cooling fan
Prior art date
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KR1020150112930A
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Korean (ko)
Inventor
이기호
Original Assignee
(주)모터일일사
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Application filed by (주)모터일일사 filed Critical (주)모터일일사
Priority to KR1020150112930A priority Critical patent/KR101586670B1/en
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Publication of KR101586670B1 publication Critical patent/KR101586670B1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

Provided is a housing integrated motor having a cooling channel, comprising: a housing which fixates a stator; a stator inserted and installed in the housing with a cylindrical shape to wind a coil around a core; a rotor installed to be rotatable inside the stator, and having a rotary shaft which projects out of the housing; and an upper cooling fan installed at the upper side of the inner side of the housing. As such, the present invention significantly contributes to extending life and improving performance of the motor, and to enhancing cooling efficiency of the stator and the rotor through a technological configuration to radially form a plurality of first external air inlet holes on the top of the outer periphery of the housing and to radially form a first internal air discharge hole at the bottom part of each of the first external air inlet holes at the same time.

Description

[0001] MOTOR HAVING COOLING AIR PATH [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a housing integrated type motor having a cooling channel, and more particularly to a cooling fan installed inside or outside an integral housing for cooling a stator and a rotor.

In general, a motor applies an electromagnetic induction phenomenon in which a conductor is placed at right angles to a magnetic field in a magnetic field and an electromagnetic force is generated perpendicularly to the magnetic field when the electric current is passed through the conductor.

The motor includes a housing, a stator, and a rotor.

On the other hand, in the operation process of the motor, high temperature heat is generated in the rotor and the stator, so there is a fear that parts are damaged and energy loss due to heat generation occurs.

Further, when the temperature of the permanent magnet included in the rotor increases, the magnetic force is reduced, so that the service life of the motor is shortened and the efficiency is lowered.

Many techniques for cooling the stator and the rotor by providing a cooling fan on the rotary shaft of the rotor have been proposed.

The following Patent Document 1 discloses a BLDC motor in which a cooling fan is incorporated.

The BLDC motor having the cooling fan incorporated therein is fastened to one end of the shaft so as to be located in a space formed between the back surface of the printed circuit board and the front surface of the stator core and integrally rotates with the shaft to dissipate heat on the back surface of the printed circuit board Circuit board cooling fan.

The following Patent Document 2 discloses a motor device in which an air flow path is formed inside a motor.

The motor device having the air passage formed inside the motor of Patent Document 2 is formed on the rear surface of the motor housing and has an air inlet through which the air supplied by the cooling fan flows into the interior of the motor housing; An air outlet formed on the front side of the motor housing and through which air introduced into the motor housing through the air inlet is discharged to the outside of the motor housing; And an air flow path formed between the stator and the rotor so as to communicate with the air inlet and the air outlet and providing an internal path for forced cooling so as to guide the air introduced through the air inlet toward the air outlet.

Korean Utility Model Publication No. 20-2009-0010661 (published on October 19, 2009) Korean Registered Patent No. 10-1312720 (issued on September 23, 2013)

However, the conventional motor cooling apparatuses including Patent Documents 1 and 2 have a problem in that the cooling efficiency is lowered because the motor cooling apparatus has a cooling flow path in which external air introduced into the housing is hardly stably blown to the stator and the rotor.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a motor control apparatus and a control method thereof, which can more efficiently guide wind generated through a cooling fan to a stator and a rotor, And to provide a motor housing-integrated type motor having a cooling channel for improving the performance and prolonging the service life thereof.

According to an aspect of the present invention, there is provided a housing integrated type motor having a cooling channel according to the present invention includes: a housing for fixing a stator; A stator inserted into the housing in a cylindrical shape in which a coil is wound around the core; A rotor rotatably installed inside the stator and having a rotation axis protruding outside the housing; A plurality of first external air inflow holes are radially formed at an upper end portion of the outer periphery of the housing, and a plurality of first external air inflow holes are formed radially below the first external air inflow holes at the upper portion of the main body, And the first inner air discharge hole is formed radially.

The housing integrated type motor having the cooling passage according to the present invention is characterized in that the upper cooling fan is a rotary disk; A plurality of air blades radially provided on an outer periphery of the rotary disk; An engaging boss protruding from the lower center of the rotating disk; An induction guide provided radially around an outer periphery of the engaging boss; And an induction hole formed between the induction guides of the rotary disk.

In the housing integrated type motor having the cooling passage according to the present invention, the amount of air blown from the inside of the first external air inflow hole of the housing to the outside of the stator in the cooling process of the stator and the rotor by the upper cooling fan, Is larger than the amount of air blown toward the rotor via the guide hole.

A housing integrated type motor having a cooling passage according to the present invention comprises: a housing in which a stator and a rotor are accommodated; And a cover for sealing the upper end of the main body. The main body has a cylindrical shape in which a lower end is sealed and an upper end is opened, a rotary shaft draw-out hole is provided in the lower middle, .

A housing integrated type motor having a cooling passage according to the present invention is characterized in that a lower cooling fan is installed in a lower portion of a housing, a plurality of second external air inflow holes are formed in a lower end outer portion of the body, 2 inner air discharge holes are formed radially.

The housing integrated type motor having the cooling passage according to the present invention is characterized in that the lower cooling fan is a rotary disk; A plurality of air blades radially provided on an outer periphery of the rotary disk; An engaging boss protruding from the lower center of the rotating disk; And a skirt having a horizontal portion and an inclined portion and sealing the lower and outer sides of the respective blades.

In the housing integrated type motor having the cooling passage according to the present invention, when the stator and the rotor are cooled by the lower cooling fan, air flows into the second external air inflow hole of the housing and air blown to the outside of the stator is blown toward the rotor The air flow rate is larger than the air flow rate.

The housing integrated type motor having the cooling passage according to the present invention is characterized in that a plurality of third external air inflow holes are formed in the lower central portion of the housing.

In the housing integrated type motor having the cooling passage according to the present invention, the amount of air blown from the second external air inflow hole of the housing to the stator in the cooling process of the stator and the rotor by the lower cooling fan is larger than that of the second external air inflow hole and the third external Is larger than the air volume blown to the rotor through the air inlet hole.

According to the housing integrated type motor having the cooling passage according to the present invention, since the air introduced into the housing through the external air inlet hole can be efficiently blown to the stator and the rotor, the cooling efficiency of the stator and the rotor can be improved Accordingly, it is possible to significantly improve the performance and life of the motor.

1 is a perspective view of a housing integrated type motor having a cooling channel according to a preferred embodiment of the present invention,
Fig. 2 is an exploded perspective view of the housing integrated type motor having the cooling passage according to the preferred embodiment,
Fig. 3 is a longitudinal sectional view of a housing integrated type motor having a cooling flow passage according to the preferred embodiment, Fig.
4 is a perspective view of an upper cooling fan of a housing integrated type motor having a cooling flow path according to the preferred embodiment,
FIG. 5 is a perspective view of a lower cooling fan of a housing integrated type motor having a cooling flow path according to the preferred embodiment,
6 is a perspective view of a housing of a housing integrated type motor having a cooling channel according to another embodiment of the present invention,
Fig. 7 is a longitudinal sectional side view of a substantial part of a housing integrated type motor having a cooling flow passage according to another embodiment; Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a housing integrated type motor having a cooling channel according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following, the terms "upward", "downward", "forward" and "rearward" and other directional terms are defined with reference to the states shown in the drawings.

1 is a perspective view of a housing integrated type motor having a cooling channel according to a preferred embodiment of the present invention, FIG. 2 is an exploded perspective view of a housing integrated type motor having a cooling channel according to the preferred embodiment, FIG. 3 is a cross- Fig. 2 is a longitudinal sectional view of a housing integrated type motor having a cooling flow path according to a first embodiment of the present invention;

The housing integrated type motor 100 having a cooling channel according to a preferred embodiment of the present invention includes a housing 110, a stator 120, a rotor 130, and a cooling fan 140 (150).

The housing 110 includes a main body 110a in which the stator 120 and the rotor 130 are accommodated; And a lid 110b sealing the upper end of the main body 110a.

The main body 110a of the housing 110 is cylindrical in which the lower end is sealed and the upper end is opened, and a rotary shaft drawing-out hole 111 is provided at the lower middle.

A plurality of first external air inflow holes 112 are radially formed on the outer peripheral upper end of the main body 110a and a plurality of first internal air inflow holes 112 are formed below the first external air inflow holes 112 on the outer circumference of the main body 110a. The discharge hole 113 is formed radially.

A plurality of second outer air inflow holes 114 are formed in the lower end outer portion of the main body 110a and a plurality of second inner air vent holes 115 are radially formed in the lower end portion of the main body 110a. do.

The lid 110b of the housing 110 is plate-shaped, and a rotary shaft draw-out hole 116 is provided at the upper center.

The stator 120 is fixed to the housing 110 and has a cylindrical shape in which a coil is wound around the core.

The rotor 130 rotates under the influence of an electric field generated by a current flowing through a coil of the stator 120 and is rotatably installed inside the stator 120.

The rotor 130 is provided at its inner center with a rotation shaft 131. The rotation shaft 131 is rotatably supported at its upper end through a rotation axis extension hole 116 formed in a lid 110b of the housing 110, And a lower end portion of the housing 110 protrudes to the lower portion of the housing 120 through a rotation shaft draw-out hole 111 formed at the lower end of the main body 110a of the housing 110. [

A mechanical part requiring a rotational driving force is installed at an upper end of a rotating shaft 131 protruding to the upper portion of the housing 110.

Since the stator 120 and the rotor 130 are well known in the art, a detailed description thereof will be omitted.

The cooling fans 140 and 150 are provided inside or outside the housing 110 to cool the stator 120 and the rotor 130.

The cooling fans 140 and 150 are connected to the rotating shaft 131 of the rotor 130 and rotate together with the rotor 130.

The housing integrated type motor 100 having a cooling channel according to a preferred embodiment of the present invention includes an upper cooling fan 140 installed in an upper portion of the housing 110 and a lower cooling fan 150 installed at a lower portion of the housing 120 ).

4 is a perspective view of an upper cooling fan of a housing integrated type motor having a cooling flow passage according to the preferred embodiment.

The upper cooling fan 140 includes a rotation disk 141; A plurality of air blades 142 radially provided on the outer periphery of the rotary disk 141; An engaging boss 143 protruding from the lower center of the rotating disk 141; An induction guide 144 provided radially around the outer periphery of the engaging boss 143; And an induction hole 145 formed between the induction guides 144 of the rotary disk 141.

In the housing integrated type motor 100 having the cooling channel according to the preferred embodiment of the present invention, when the rotor 130 rotates in its operation, the upper cooling fan 140 connected to the rotation axis 131 rotates together Thereby cooling the upper portion of the stator 120 and the rotor 130.

When the upper cooling fan 140 rotates, external air flows into the upper end of the housing 110 through a plurality of first external air inflow holes 112 provided at the upper end of the outer circumference of the housing 110, The inlet air is blown toward the upper end of the stator 120 and the rotor 130 by the upper cooling fan 140.

The air blown toward the upper end of the stator 120 and the rotor 130 is cooled by the stator 120 and the rotor 130 and then is discharged through a plurality of first internal air discharge holes 113 to the outside of the housing 100.

The air flowing into the upper end of the housing 110 through the first outer air inlet hole 112 of the housing 110 during the cooling process of the stator 120 and the rotor 130 by the upper cooling fan 140 A part of the air is blown outward of the stator 120 to cool the stator 120 and then to be discharged to the outside of the housing 110 through the first inner air discharge hole 113 and the other part is discharged to the upper cooling fan 140 The air is blown toward the rotor 130 through the induction hole 145 formed in the rotary disk 141 of the rotary disk 141 to cool the rotor 130 and then is discharged to the outside of the housing 110 .

The cooling air is blown from the inside of the first external air inflow hole 112 of the housing 110 to the outside of the stator 120 during the cooling process of the stator 120 and the rotor 130 by the upper cooling fan 140 Since the amount of air is larger than the amount of air blown toward the rotor 130 via the induction hole 145 of the upper cooling fan 140, the air cooled on the side of the rotor 130 is directed toward the first internal air discharge hole 113 So that it can be smoothly discharged to the outside of the housing 110 by joining with the air cooled in the outer direction of the stator 120 while being sucked.

5 is a perspective view of a lower cooling fan of a housing integrated type motor having a cooling flow path according to the preferred embodiment of the present invention.

The lower cooling fan 150 includes a rotation disk 151; A plurality of air blades 152 radially provided on the outer periphery of the rotary disk 151; A coupling boss 153 protruding from the lower center of the rotary disk 151; And a skirt 154 having a horizontal portion and an inclined portion and sealing the lower and outer sides of the respective air blades 152.

In the housing integrated type motor 100 having the cooling channel according to the preferred embodiment of the present invention, when the rotor 130 rotates in its operation, the lower cooling fan 150 connected to the rotation axis 131 rotates together The lower part of the stator 120 and the rotor 130 are cooled.

When the lower cooling fan 150 rotates, external air flows into the lower end of the housing 110 through the plurality of second external air inflow holes 114 provided in the lower end of the housing 110, (120) and the rotor (130).

The air blown toward the lower end of the stator 120 and the rotor 130 is cooled by the stator 120 and the rotor 140 and then supplied to the lower inner end of the housing 120 through a plurality of second inner air And is discharged to the outside of the housing 110 through the discharge hole 115.

The air flowing into the inner lower end of the housing 120 through the second outer air inflow hole 114 of the housing 110 during the cooling process of the stator 120 and the rotor 130 by the lower cooling fan 150 A part of the air is blown to the outside of the stator 120 to cool the stator 120 and then is discharged to the outside of the housing 110 through the second inside air discharge hole 115, And then is discharged to the outside of the housing 110 through the second inner air vent 115.

The stator 120 and the rotor 130 are cooled by the lower cooling fan 150 to flow into the second external air inlet hole 114 of the housing 110 to blow air to the outside of the stator 120 The air that has cooled the rotor 130 is sucked toward the second inner air discharge hole 115 and merges with the air that has cooled the stator 120 side, So that it can be smoothly discharged to the outside of the housing 110.

The housing integrated type motor 100 having a cooling channel according to the preferred embodiment of the present invention includes an upper cooling fan 140 installed in an upper portion of the housing 110 and a lower cooling fan 150 installed at a lower portion of the housing 110 The housing integrated type motor 100 having the cooling flow path according to the present invention may be configured to use only the upper cooling fan 140 or to cool the upper and lower portions of the stator 120 and the rotor 130, It is needless to say that the present invention can be modified into a form using only the fan 150.

FIG. 6 is a perspective view of a housing-integrated type motor having a cooling flow passage according to another embodiment of the present invention, and FIG. 7 is a vertical sectional view of a substantial part of a housing- integrated type motor having a cooling flow passage according to another embodiment.

6 and 7, a housing integrated type motor 100 having a cooling channel according to another embodiment of the present invention has a plurality of third external air inflow holes 119 formed at the lower middle portion of the housing 110 .

The housing integrated type motor 100 having the cooling channel according to another embodiment of the present invention is configured such that a larger amount of the magnetic flux toward the rotor 130 through the third external air inflow hole 119 formed in the lower middle portion of the housing 120 It is possible to supply outside air.

In the housing integrated type motor 100 having the cooling channel according to another embodiment of the present invention, in the cooling process of the stator 120 and the rotor 130 by the lower cooling fan 150, The amount of air blown from the air inflow hole 114 toward the stator 120 is larger than the air amount blown toward the rotor 130 through the second external air inflow hole 114 and the third external air inflow hole 119 The air cooled by the rotor 130 is sucked toward the second inner air discharge hole 115 and merged with the air cooled on the stator 120 so that it can be smoothly discharged to the outside of the housing 110 Of course.

Although the present invention has been described in detail with reference to the above embodiments, it is needless to say that the present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the spirit of the present invention.

100: housing-integrated motor having cooling flow path
110: Housing
120: stator
130: rotor
131:
140: Upper cooling fan
150: Lower cooling fan

Claims (9)

delete delete delete delete A housing 110 for fixing the stator 120;
A stator 120 inserted into the housing 110 in a cylindrical shape in which a coil is wound around the core;
A rotor 130 rotatably installed inside the stator 120 and having a rotation axis 131 protruding outside the housing 110;
And an upper cooling fan 140 installed in the upper portion of the inside of the housing 110,
A plurality of first external air inflow holes 112 are radially formed in the upper end portion of the outer circumference of the housing 110 and a first internal air inflow hole 112 is formed in a lower portion of each first external air inflow hole 112 on the outer periphery of the housing 110, The discharge hole 113 is formed radially,
The housing 110
A main body 110a housing the stator 120 and the rotor 130; And a cover 110b sealing the upper end of the main body 110a,
The main body 110a has a cylindrical shape having a lower end closed and an upper end opened, a rotary shaft draw-out hole 111 provided at the lower center,
The lid 110b is plate-shaped, and a rotary shaft drawing-out hole 116 is provided at the upper center,
A lower cooling fan 150 is installed at a lower portion of the housing 110,
A plurality of second outer air inflow holes 114 are formed in the lower end outer portion of the main body 110a and a plurality of second inner air vent holes 115 are radially formed in the lower end portion of the outer periphery of the main body 110a The housing having a cooling flow passage.
6. The method of claim 5,
The lower cooling fan 150
A rotating disk 151;
A plurality of air blades 152 radially provided on the outer periphery of the rotary disk 151;
A coupling boss 153 protruding from the lower center of the rotary disk 151;
And a skirt (154) having a horizontal portion and an inclined portion and sealing a lower end and an outer side of each of the air blades (152).
6. The method of claim 5,
The stator 120 and the rotor 130 are cooled by the lower cooling fan 150 to flow into the second external air inlet hole 114 of the housing 110 to blow air to the outside of the stator 120 Is greater than the amount of air blown toward the rotor (130).
6. The method of claim 5,
And a plurality of third external air inflow holes (119) are formed in a lower central portion of the housing (110).
9. The method of claim 8,
The amount of air blown from the second external air inflow hole 114 of the housing 110 to the stator 120 in the cooling process of the stator 120 and the rotor 130 by the lower cooling fan 150 is larger than the air amount blown from the second external air Is larger than the air flow rate to the rotor (130) through the inlet hole (114) and the third external air inlet hole (119).

KR1020150112930A 2015-08-11 2015-08-11 motor having cooling air path KR101586670B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170139954A (en) * 2016-06-10 2017-12-20 엘지이노텍 주식회사 Motor for drone and drone having the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950001030Y1 (en) * 1992-05-01 1995-02-18 이헌조 System for air flowing of a motor with flange
KR20090010661U (en) 2008-11-20 2009-10-20 (주)선인이엔지 Compact Probe Apparatus Provided with Roller Carrying out Rolling Motion for Detecting Construction in Underground
WO2012128004A1 (en) * 2011-03-23 2012-09-27 パナソニックＥｓパワーツール株式会社 Power tool
KR101312720B1 (en) 2013-04-15 2013-10-01 (주)모터일일사 Motor device forming air path to motor inside

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950001030Y1 (en) * 1992-05-01 1995-02-18 이헌조 System for air flowing of a motor with flange
KR20090010661U (en) 2008-11-20 2009-10-20 (주)선인이엔지 Compact Probe Apparatus Provided with Roller Carrying out Rolling Motion for Detecting Construction in Underground
WO2012128004A1 (en) * 2011-03-23 2012-09-27 パナソニックＥｓパワーツール株式会社 Power tool
KR101312720B1 (en) 2013-04-15 2013-10-01 (주)모터일일사 Motor device forming air path to motor inside

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170139954A (en) * 2016-06-10 2017-12-20 엘지이노텍 주식회사 Motor for drone and drone having the same
KR102599778B1 (en) * 2016-06-10 2023-11-08 엘지이노텍 주식회사 Motor for drone and drone having the same

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