WO2016108581A1 - Cover for motor housing - Google Patents

Cover for motor housing Download PDF

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Publication number
WO2016108581A1
WO2016108581A1 PCT/KR2015/014413 KR2015014413W WO2016108581A1 WO 2016108581 A1 WO2016108581 A1 WO 2016108581A1 KR 2015014413 W KR2015014413 W KR 2015014413W WO 2016108581 A1 WO2016108581 A1 WO 2016108581A1
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WO
WIPO (PCT)
Prior art keywords
motor housing
cover
body portion
cooling
bearing
Prior art date
Application number
PCT/KR2015/014413
Other languages
French (fr)
Korean (ko)
Inventor
이정호
차창환
김종원
Original Assignee
주식회사 효성
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Filing date
Publication date
Application filed by 주식회사 효성 filed Critical 주식회사 효성
Publication of WO2016108581A1 publication Critical patent/WO2016108581A1/en

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    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C37/00—Cooling of bearings
    • F16C37/007—Cooling of bearings of rolling bearings
    • 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
    • H02K5/15—Mounting arrangements for bearing-shields or end plates
    • 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
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • 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
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present invention relates to a cover for a motor housing, and more particularly, the air discharged by the cooling fan flows to the front of the motor housing along the cooling fins provided on the outer circumferential surface of the motor housing, and then cools the motor housing primarily.
  • a cooling passage is formed between the first body portion and the second body portion, and the bearing is cooled by the air introduced into the cooling passage. It relates to a cover for a motor housing that can be.
  • an electric motor which is a kind of motor, includes a rotor coupled with a magnet and a stator to which a coil is wound, and rotates by magnetic flux generated by current applied to the coil of the stator and electromagnetic induction of the rotor. It is a device that uses the power of the rotating shaft as the self-rotating.
  • Heat generated in the motor is one of the biggest causes of deteriorating the performance of the motor, in general, the motor is provided with a cooling means for cooling the heat generated in the motor.
  • cooling means of the electric motor air cooling using a cooling fan and water cooling using cooling water are generally used.
  • the electric motor 1 is provided with the cylindrical motor housing 2. Cooling fins 3 are installed along the longitudinal direction of the motor housing 2 at regular intervals on the outer circumferential surface of the motor housing 2.
  • the cover 10 is installed on one side and / or the other side of the motor housing 2.
  • the stator 8 and the rotor 9 are mounted inside the motor housing 2.
  • the stator 8 is fixedly installed on the inner side of the motor housing 2.
  • the rotor 9 is installed to be rotatable with respect to the stator 8 inside the stator 8.
  • the rotary shaft 7 is installed through the motor housing 2 and the cover 10.
  • a bearing 6 is installed between the rotary shaft 7 and the cover 10. That is, the rotating shaft 7 is rotatably installed in the motor housing 2 via the bearing 6.
  • the rotor 9 is installed on the outer circumferential surface of the rotary shaft 7 so as to rotate simultaneously with the rotary shaft 7.
  • the fan hood 4 is installed on the other side of the motor housing 2, and the cooling fan 5 is installed inside the fan hood 4.
  • the cooling fan 5 is installed at one end of the rotary shaft 7 and rotates simultaneously with the rotary shaft 7.
  • the rotor rotates by the magnetic flux generated in the coil and the electromagnetic induction of the rotor, thereby rotating the rotating shaft connected to the rotor. Air forcibly discharged by the cooling fan by the rotation of the rotating shaft cools the motor housing along the cooling fins.
  • the conventional motor housing cover has a problem that the cooling flow path is not formed, the air flowing along the cooling fin is discarded after cooling only the motor housing.
  • the cover for the conventional motor housing does not have a separate cooling means for cooling the bearing installed in a part of the cover, the frictional heat of the rotating shaft and the bearing increases, the bearing is heat deformation or in severe cases the bearing may be damaged to damage the motor There was a problem.
  • the conventional cover for the motor housing is not cooled, the bearing has a problem that the efficiency of the motor is reduced as heat generated in the bearing flows into the interior of the motor housing.
  • the conventional water-cooled motor housing cover has a complicated structure due to the formation of a separate flow path for cooling water to flow, which increases the manufacturing cost and increases the thickness of the cover for the motor housing, making it impossible to miniaturize the motor. There was this.
  • an object of the present invention is to primarily cool the motor housing while the air discharged by the cooling fan flows to the front of the motor housing along the cooling fins installed on the outer peripheral surface of the motor housing Afterwards, a cooling flow path is formed between the first body portion and the second body portion to secondaryly cool the bearings installed on the cover for the motor housing with air discarded to the outside of the motor housing. To provide a cover for the motor housing that can cool the bearing.
  • the present invention provides a cover for an electric motor housing that can prevent the bearing from being deformed by thermal deformation and increase the efficiency of the electric motor as the bearing is secondarily cooled by the air introduced into the cooling flow path.
  • the present invention provides a motor housing having a cooling fin installed on an outer circumferential surface thereof, a cover installed on one side of the motor housing, a rotating shaft installed through the motor housing and the cover, and the rotating shaft and the An electric motor having a bearing installed between the cover and a cooling fan therein and a fan hood installed on the other side of the motor housing, the cover comprising: a first body part having a first hollow hole formed at a center thereof; A second main body installed on the inner side of the first main body; And a plurality of cooling passages formed between the first body portion and the second body portion to cool the bearing with air discharged by the cooling fan.
  • the first body portion and the second body portion of the cover for the motor housing is formed in a circular shape, the diameter of the second body portion is the first body portion It is preferably formed smaller than the diameter.
  • the second body portion of the cover for the motor housing is a base portion having a second hollow hole in the center; A plurality of connecting portions formed to be spaced apart from the circumferential surface of the base portion along the circumferential direction of the rotation shaft; A first protrusion formed to protrude from an outer surface of the base part; A second protrusion formed to protrude on an inner surface of the base portion so as to face the first protrusion; And a mounting recess formed between the first protrusion and the second protrusion to mount the bearing.
  • the second body portion of the cover for the motor housing may further include a plurality of ribs extending from the respective connecting portion to the upper end surface of the first protrusion; have.
  • the circumferential surface of the base portion of the second body portion of the cover for the motor housing is about a line parallel to the rotation axis from the inner surface of the base portion to the outer surface of the base portion. It may be formed to be inclined to have a predetermined inclination angle.
  • the inclination angle of the circumferential surface of the base of the second body portion of the cover for the motor housing is an angle of 0 degrees or more and 60 degrees or less with respect to the line parallel to the rotation axis. It is preferably formed to be.
  • the inner surface of the first body portion of the cover for the motor housing is about a line perpendicular to the rotation axis from the outer peripheral surface of the first body portion to the inner peripheral surface of the first body portion It may be formed to have a predetermined inclination angle.
  • the cover for the motor housing is formed such that the inclination angle of the inner surface of the first body portion is an angle of 0 degrees or more and 40 degrees or less with respect to the line perpendicular to the rotation axis. It is desirable to be.
  • the air discharged by the cooling fan flows to the front surface of the motor housing along the cooling fins provided on the outer circumferential surface of the motor housing, and is then discarded to the outside of the motor housing after the motor housing is first cooled.
  • Secondary cooling of the bearing installed in the cover for the motor housing with air has the effect of preventing thermal deformation of the bearing and its damage.
  • the cover for the motor housing according to the present invention is to minimize the energy consumption by cooling the bearing secondary to the air discharged from the cooling fan through the cooling flow path, the heat generated from the bearing is introduced into the interior of the motor housing There is an effect that can increase the efficiency of the motor by preventing.
  • the cover for the motor housing needs to add a configuration such as a separate forced ventilation device for cooling the bearing as the bearing is cooled through a cooling passage formed between the first body portion and the second body portion. After cooling the motor housing primarily with the air blown from the existing cooling fan without cooling, the bearing is secondarily cooled to reduce the manufacturing cost of the cover for the motor housing and reduce the size of the motor. .
  • FIG. 1 is a cross-sectional view for explaining a schematic structure of a conventional electric motor.
  • Figure 2 shows a rear exploded perspective view of a conventional air-cooled electric motor.
  • Figure 3 shows a perspective view of a motor with a cover for the motor housing according to an embodiment of the present invention.
  • FIG. 4 is a front perspective view of the cover for the motor housing according to an embodiment of the present invention.
  • Figure 5 shows a rear perspective view of the cover for the motor housing according to an embodiment of the present invention.
  • FIG. 6 is a side cross-sectional view of the line II of FIG. 5.
  • FIG. 7 is an enlarged view of portion A of FIG. 6.
  • FIG. 8 is an enlarged view of a portion B of FIG. 6.
  • Figure 3 shows a perspective view of a motor with a cover for the motor housing according to an embodiment of the present invention
  • Figure 4 shows a front perspective view of a cover for the motor housing according to an embodiment of the present invention
  • Figure 5 is a present invention
  • Rear perspective view of the cover for the motor housing according to an embodiment of the. 6 is a side cross-sectional view of the line I-I of FIG. 5
  • FIG. 7 is an enlarged view of portion A of FIG. 6
  • FIG. 8 is an enlarged view of portion B of FIG. 6.
  • Inner surface means a surface in a direction adjacent to the inside of the motor housing
  • outer surface means a surface opposite to the inner surface, that is, a surface in a direction adjacent to the outside.
  • inner circumferential surface means a circumferential surface of the rotation axis adjacent to the rotation axis with respect to the rotation axis
  • outer circumferential surface means a circumferential surface of the rotation axis relatively far from the rotation axis relative to the inner circumferential surface with respect to the rotation axis.
  • the cover 10 for an electric motor housing according to an embodiment of the present invention includes a first main body part 100, a second main body part 300, and a plurality of cooling flow paths 300. Is made of.
  • the motor 1 includes a cylindrical motor housing 2.
  • a plurality of cooling fins 3 are installed on the outer circumferential surface of the motor housing 2 so as to be spaced apart at predetermined intervals along the longitudinal direction of the motor housing 2.
  • the cover 10 is installed on one side of the motor housing 2.
  • the rotary shaft 7 is installed through the motor housing 2 and the top cover 10.
  • a bearing 6 is installed between the rotary shaft 7 and the cover 10.
  • the fan hood 4 is installed on the other side of the motor housing 2 so as to face the cover 10.
  • the cooling fan 5 is installed inside the fan hood 4. That is, the cooling fan 5 is installed at one end of the rotation shaft 7 so as to rotate simultaneously with the rotation shaft 7 inside the fan hood 4.
  • the first body portion 100 of the cover 10 has a first hollow hole 110 is formed in the center so that the rotation shaft 7 can be inserted and fastened.
  • the second main body 200 of the cover 10 is installed on the inner surface 130 of the first main body.
  • a plurality of cooling passages 300 are formed with the first main body 100 and the first main body 100. It is formed between two main body parts 200. That is, a plurality of cooling passages 300 are formed between the inner surface 130 of the first body portion and the outer surface 212 of the base portion of the second body portion.
  • the first body part 100 and the second body part 200 are formed in a circular shape, that is, a disc shape.
  • the diameter (d) of the second body portion 200 formed in a disk shape is formed smaller than the diameter (D) of the first body portion 100 formed in a disk shape. Accordingly, the air discharged through the cooling fan 5 cools the motor housing 2 along the outer circumferential surface of the motor housing 2 between the cooling fins 3 of the motor housing 2 in which the cooling fan 5 is installed. After flowing to the opposite side (front of the motor housing), air flows into the plurality of cooling passages 300 formed between the inner surface 130 of the first body portion and the outer surface 212 of the base portion of the second body portion, The incoming air cools the bearings.
  • a plurality of cooling flow paths in which air that is cooled and discarded only in the motor housing along the conventional cooling fins is formed between the inner surface 130 of the first body portion of the cover 10 and the outer surface 212 of the base portion of the second body portion. Inflow to the 300 is to cool the bearing.
  • the cover 10 for the motor housing utilizes the air blown from the cooling fan that is conventionally installed to cool the motor housing, without having to install a separate forced air blower.
  • the overall manufacturing cost of an electric motor can be reduced and motor miniaturization can be attained.
  • the second main body 200 of the cover 10 for a motor housing is a base portion 210, a plurality of connecting portions 220, the first protrusion 230, a second protrusion 240, and a seating recess 250.
  • the second hollow hole 211 is formed at the center of the base portion 210 of the second body portion. Accordingly, the rotating shaft 7 penetrates through the second hollow hole 211 formed in the first hollow hole 110 of the first main body part 100 and the base portion 210 of the second main body part 100, thereby providing a motor housing 2. Is installed through the back of the). As described above, the base portion 210 of the second body portion is also formed in a disc shape.
  • the plurality of connection parts 220 are formed to be spaced apart from the circumferential surface 214 of the base part in the circumferential direction of the rotation shaft.
  • the plurality of connection parts 220 may be formed on the circumferential surface 214 of the base part so as to be spaced apart by a predetermined angle with respect to the rotation axis.
  • three may be formed on the circumferential surface 214 of the base portion along the circumferential direction of the rotation shaft at an angle of 120 degrees.
  • four or six may be formed on the circumferential surface 214 of the base portion along the circumferential direction of the rotation shaft at an angle of 90 degrees or 60 degrees.
  • eight may be formed on the circumferential surface 214 of the base portion along the circumferential direction of the rotation shaft at an angle of 45 degrees.
  • the first protrusion 230 is formed to protrude on the outer surface 212 of the base portion.
  • the second protrusion 240 is formed to protrude on the inner side surface 213 of the base part so as to face the first protrusion 230.
  • the seating groove 250 is formed between the first protrusion 230 and the second protrusion 240.
  • the bearing is mounted in the seating groove 250.
  • the rotary shaft 7 passes through the first hollow hole 110 of the first body part of the cover and the second hollow hole 211 of the base part of the second body part via a bearing 6 installed in the seating groove 250. It is rotatably installed in the motor housing (2). That is, as a part of the rotating shaft 7 rotates at a high speed by the interaction of the stator and the rotor while contacting the bearing 6 mounted on the seating groove 250, the temperature of the bearing rises.
  • the second body portion according to another embodiment of the present invention further includes a plurality of ribs 260.
  • Each rib 260 extends from each connection portion 220 to the top surface of the first protrusion 230. That is, the outer surface of the rib 260 contacts the inner surface 130 of the first body portion, and the inner surface of the rib 260 contacts the outer surface 212 of the base portion of the second body portion at the connecting portion 220. It extends to the top surface of the first protrusion 230.
  • each cooling passage 300 is formed in the two ribs 260 and the first body portion extending from the adjacent connecting portion 220 to the top surface of the first protrusion 230 To the second hollow hole 211 and the first hollow hole 110 along the upper surface of the first portion 230 and the space portion formed between the side surface 130 and the outer surface 212 of the base portion of the second body portion. It is formed by the passage that follows.
  • air flowing to the front surface of the motor housing 2 along the cooling fins 3 extends to the adjacent connecting portion 220 along the circumferential surface 214 of the base portion and the inner surface 130 of the first body portion.
  • Flow into the space between the ribs 260 is moved along the upper surface of the first protrusion 230 to the front of the motor housing (2).
  • the moving air cools the bearing mounted on the seating groove 250. After cooling the bearing, air passes through the second hollow hole 211 and the first hollow hole 110 to be discharged to the outside of the motor housing 2.
  • the circumferential surface 214 of the base portion of the second body portion is a line parallel to the axis of rotation from the inner surface 213 of the base portion to the outer surface 212 of the base portion ( It is formed to be inclined so as to have a predetermined inclination angle ⁇ with respect to L).
  • the electric motor along the cooling fin 3 Air flowing to the front surface of the housing 2 is easily provided to the space between the circumferential surface 214 of the base portion and the rib 260 extending along the inner surface 130 of the first body portion and adjacent to the connecting portion 220. It will flow in.
  • the inclination angle ⁇ of the circumferential surface 214 of the base portion is inclined so as to have an inclination angle of 0 degrees or more and 60 degrees or less with respect to the line L parallel to the axis of rotation. (0 ° ⁇ ⁇ ⁇ 60 °
  • the velocity of air flowing between the inner side surface 130 of the first body portion and the outer side surface 212 of the base portion is increased to hit the inner side surface 130 of the first body portion. This is because the vortex is formed, and thus the amount of air flowing to the upper end surface of the first protrusion is small, so that the bearing cannot be sufficiently cooled.
  • the inner side surface 130 of the first body portion is a line perpendicular to the rotation axis from the outer circumferential surface 140 of the first body portion to the inner circumferential surface 150 of the first body portion. It is formed to have a predetermined inclination angle ⁇ with respect to (H).
  • the inclination angle ⁇ of the inner surface 130 of the first body portion is inclined so as to have an inclination angle ⁇ of not less than 0 degrees and not more than 40 degrees with respect to the line H perpendicular to the rotation axis. ⁇ ⁇ ⁇ 40 °)
  • the inclination angle ⁇ exceeds 40 degrees, the structural stability of the cover is reduced, and a crack may occur near the inner circumferential surface of the cover, in particular, the first body part, due to vibration generated during driving of the motor. There is a problem that the cost is increased.
  • Table 1 shows the temperature of the bearing and the temperature of the bearing in the cover for the motor housing according to the present invention in the state operated in the same condition in the cover for the conventional motor housing.
  • the temperature of the bearing was 48.1 degrees in the cover for the conventional motor housing in which no cooling flow path was formed.
  • the temperature of the bearing installed in the seating groove of the cover for the motor housing in which the cooling flow path is formed according to the present invention is cooled to 25.8 degrees.
  • the cooling efficiency of the bearing increases by more than 50%, the thermal deformation and breakage of the bearing due to the increase of the bearing temperature are prevented, and the heat generated from the bearing is prevented from flowing into the motor housing to increase the efficiency of the motor. Can be.
  • the rotating shaft rotates as the rotor rotates by the magnetic flux generated by the current applied to the coil of the stator and the electromagnetic induction of the rotor.
  • the temperature of the bearing is increased by the rotation of the rotating shaft.
  • the cooling fan installed on the other side of the motor housing is driven by the rotation of the rotary shaft. As the cooling fan is driven, air flows between the cooling fins to the front of the motor housing (opposite to the motor housing in which the cooling fan is installed). Air flowing to the front surface of the motor housing is introduced between the inner surface of the first body portion and the inner surface of the base portion of the second body portion by the inclination angle formed on the inner surface of the base portion and the inclination angle formed on the inner surface of the first body portion.
  • Air introduced between the inner surface of the first body portion and the inner surface of the base portion of the second body portion is moved forward of the motor housing along the upper surface of the first protrusion so as to be parallel to the rotation axis.
  • the bearing is cooled by the air cooling method.
  • the second hollow hole and the first hollow hole are discharged to the outside of the cover.
  • 200 second body portion
  • 210 base portion
  • D diameter of the first body portion
  • d diameter of the second body portion
  • ⁇ inclination angle of the peripheral surface of the base portion
  • ⁇ inclination angle of the inner surface of the first body portion.
  • the present invention relates to a cover for a motor housing and can be used in the field of motors.

Abstract

The present invention relates to a cover for a motor housing, in a motor comprising: a motor housing having a cooling fin installed on the outer circumferential surface thereof; a cover installed in one side of the motor housing; a rotation shaft installed so as to penetrate through the motor housing and the cover; a bearing installed between the rotation shaft and the cover; and a fan hood having a cooling fan therein and installed in the other side of the motor housing, the cover for a motor housing comprising: a first main body unit having a first hollow hole formed in the central portion thereof; a second main body unit installed in the inner side surface of the first main body unit; and a plurality of cooling flow paths, formed between the first main body unit and the second main body unit, for cooling the bearing by means of air discharged by the cooling fan.

Description

전동기 하우징용 커버Cover for motor housing
본 발명은 전동기 하우징용 커버에 관한 것으로, 더욱 상세하게는 냉각팬에 의해 토출된 공기가 전동기 하우징의 외주면에 설치된 냉각핀을 따라 전동기 하우징의 전면으로 유동하면서 전동기 하우징을 1차적으로 냉각한 후에 전동기 하우징의 외부로 버려지는 공기로 전동기 하우징용 커버에 설치된 베어링을 2차적으로 냉각하기 위해, 제1 본체부와 제2 본체부 사이에 냉각유로를 형성하고, 냉각유로로 유입된 공기로 베어링을 냉각할 수 있는 전동기 하우징용 커버에 관한 것이다.The present invention relates to a cover for a motor housing, and more particularly, the air discharged by the cooling fan flows to the front of the motor housing along the cooling fins provided on the outer circumferential surface of the motor housing, and then cools the motor housing primarily. In order to secondaryly cool the bearing installed in the cover for the motor housing with the air discarded to the outside of the housing, a cooling passage is formed between the first body portion and the second body portion, and the bearing is cooled by the air introduced into the cooling passage. It relates to a cover for a motor housing that can be.
일반적으로, 모터의 일종인 전동기(electric motor)는 자석이 결합된 회전자와 코일이 권선되는 고정자를 구비하고, 고정자의 코일에 인가된 전류에 의해 발생되는 자속과 회전자의 전자기 유도에 의해 회전자가 회전함에 따라 회전축의 동력을 이용하는 장치이다.In general, an electric motor, which is a kind of motor, includes a rotor coupled with a magnet and a stator to which a coil is wound, and rotates by magnetic flux generated by current applied to the coil of the stator and electromagnetic induction of the rotor. It is a device that uses the power of the rotating shaft as the self-rotating.
이러한 전동기는 전기적 에너지가 기계적 에너지로 변환되는 과정에서 철의 히스테리시스, 와전류, 기계적인 마찰 등에 의해서 에너지의 손실이 발생하게 되고, 일러한 에너지 손실에 의해 전동기에서는 열이 발생하게 된다.In the process of converting electrical energy into mechanical energy, such a motor generates energy loss due to iron hysteresis, eddy current, mechanical friction, and the like, and heat is generated in the motor by the energy loss.
전동기에서 발생하는 열은 전동기의 성능을 저하시키는 가장 큰 원인 중에 하나로, 일반적으로 전동기는 전동기에서 발생하는 열을 냉각시키기 위한 냉각수단을 구비한다. Heat generated in the motor is one of the biggest causes of deteriorating the performance of the motor, in general, the motor is provided with a cooling means for cooling the heat generated in the motor.
전동기의 냉각수단으로는 냉각팬을 이용한 공냉식과 냉각수를 이용하는 수냉식이 일반적으로 사용되고 있다.As the cooling means of the electric motor, air cooling using a cooling fan and water cooling using cooling water are generally used.
도 1 및 도 2를 참조하여 종래 전동기 및 전동기의 냉각방식을 설명한다. 전동기(1)는 원통 형상의 전동기 하우징(2)을 구비한다. 전동기 하우징(2)의 외주면에 일정한 간격으로 전동기 하우징(2)의 길이방향을 따라 냉각핀(3)이 설치된다. 커버(10)가 전동기 하우징(2)의 일측 및/또는 타측에 설치된다. 1 and 2 will be described a cooling method of a conventional motor and the motor. The electric motor 1 is provided with the cylindrical motor housing 2. Cooling fins 3 are installed along the longitudinal direction of the motor housing 2 at regular intervals on the outer circumferential surface of the motor housing 2. The cover 10 is installed on one side and / or the other side of the motor housing 2.
전동기 하우징(2)의 내부에는 고정자(8)와 회전자(9)가 장착된다. 고정자(8)는 전동기 하우징(2)의 내측면에 고정설치된다. 고정자(8)의 내측으로 고정자(8)에 대해 회전가능하도록 회전자(9)가 설치된다. The stator 8 and the rotor 9 are mounted inside the motor housing 2. The stator 8 is fixedly installed on the inner side of the motor housing 2. The rotor 9 is installed to be rotatable with respect to the stator 8 inside the stator 8.
회전축(7)이 전동기 하우징(2)과 커버(10)를 관통하여 설치된다. 베어링(6)이 회전축(7)과 커버(10) 사이에 설치된다. 즉, 회전축(7)은 베어링(6)을 매개로 하여 전동기 하우징(2)에 회전가능하게 관통 설치된다. 이때, 회전자(9)가 회전축(7)과 동시에 회전하도록 회전축(7)의 외주면에 설치된다. 전동기 하우징(2)의 타측에 팬후드(4)가 설치되고, 팬후드(4)의 내부에 냉각팬(5)이 설치된다. 냉각팬(5)은 회전축(7)의 일단에 설치되어 회전축(7)과 동시에 회전된다.The rotary shaft 7 is installed through the motor housing 2 and the cover 10. A bearing 6 is installed between the rotary shaft 7 and the cover 10. That is, the rotating shaft 7 is rotatably installed in the motor housing 2 via the bearing 6. At this time, the rotor 9 is installed on the outer circumferential surface of the rotary shaft 7 so as to rotate simultaneously with the rotary shaft 7. The fan hood 4 is installed on the other side of the motor housing 2, and the cooling fan 5 is installed inside the fan hood 4. The cooling fan 5 is installed at one end of the rotary shaft 7 and rotates simultaneously with the rotary shaft 7.
상술한 바와 같이 고정자의 코일에 전류가 인가됨에 따라 코일에 발생하는 자속과 회전자의 전자기 유도에 의해 회전자가 회전하고, 이에 따라 회전자와 연결된 회전축이 회전하게 된다. 회전축의 회전에 의해 냉각팬에 의해 강제로 토출되는 공기가 냉각핀을 따라 전동기 하우징을 냉각하게 된다.As described above, as the current is applied to the coil of the stator, the rotor rotates by the magnetic flux generated in the coil and the electromagnetic induction of the rotor, thereby rotating the rotating shaft connected to the rotor. Air forcibly discharged by the cooling fan by the rotation of the rotating shaft cools the motor housing along the cooling fins.
그러나, 종래 전동기 하우징용 커버는 냉각유로가 형성되지 않아, 냉각핀을 따라 유동하는 공기가 전동기 하우징만을 냉각한 후에 버려지게 되는 문제점이 있었다.However, the conventional motor housing cover has a problem that the cooling flow path is not formed, the air flowing along the cooling fin is discarded after cooling only the motor housing.
또한, 종래 전동기 하우징용 커버는 커버의 일부에 설치된 베어링을 냉각하기 위한 별도의 냉각수단이 없어, 회전축과 베어링의 마찰열이 증가하여 베어링이 열변형되거나 심한 경우에는 베어링이 파손되어 전동기를 손상시킬 수 있는 문제점이 있었다.In addition, the cover for the conventional motor housing does not have a separate cooling means for cooling the bearing installed in a part of the cover, the frictional heat of the rotating shaft and the bearing increases, the bearing is heat deformation or in severe cases the bearing may be damaged to damage the motor There was a problem.
더욱이, 종래 전동기 하우징용 커버는 베어링의 냉각되지 못하고, 베어링에 발생되는 열이 전동기 하우징의 내부로 유입됨에 따라 전동기의 효율이 저감되는 문제점이 있었다.In addition, the conventional cover for the motor housing is not cooled, the bearing has a problem that the efficiency of the motor is reduced as heat generated in the bearing flows into the interior of the motor housing.
게다가, 종래 수냉식 전동기 하우징용 커버는 냉각수가 유동할 수 있는 별도의 유로를 형성해야 함에 따라 구조가 복잡하여 제조비용이 증가하고 전동기 하우징용 커버의 두께가 증가되어 전동기의 소형화를 도모할 수 없는 문제점이 있었다.In addition, the conventional water-cooled motor housing cover has a complicated structure due to the formation of a separate flow path for cooling water to flow, which increases the manufacturing cost and increases the thickness of the cover for the motor housing, making it impossible to miniaturize the motor. There was this.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 본 발명의 목적은 냉각팬에 의해 토출된 공기가 전동기 하우징의 외주면에 설치된 냉각핀을 따라 전동기 하우징의 전면으로 유동하면서 전동기 하우징을 1차적으로 냉각한 후에 전동기 하우징의 외부로 버려지는 공기로 전동기 하우징용 커버에 설치된 베어링을 2차적으로 냉각하기 위해, 제1 본체부와 제2 본체부 사이에 냉각유로를 형성하고, 냉각유로로 유입된 공기로 베어링을 냉각할 수 있는 전동기 하우징용 커버를 제공하는 것이다.The present invention is to solve the above problems, an object of the present invention is to primarily cool the motor housing while the air discharged by the cooling fan flows to the front of the motor housing along the cooling fins installed on the outer peripheral surface of the motor housing Afterwards, a cooling flow path is formed between the first body portion and the second body portion to secondaryly cool the bearings installed on the cover for the motor housing with air discarded to the outside of the motor housing. To provide a cover for the motor housing that can cool the bearing.
또한, 본 발명은 냉각유로로 유입된 공기로 베어링을 2차적으로 냉각함에 따라 베어링이 열 변형에 의해 변형되는 것을 방지하고, 전동기의 효율을 증대시킬 수 있는 전동기 하우징용 커버를 제공하는 것이다.In addition, the present invention provides a cover for an electric motor housing that can prevent the bearing from being deformed by thermal deformation and increase the efficiency of the electric motor as the bearing is secondarily cooled by the air introduced into the cooling flow path.
발명의 목적을 달성하기 위해 본 발명은 외주면에 냉각핀이 설치되는 전동기 하우징과, 상기 전동기 하우징의 일측에 설치되는 커버와, 상기 전동기 하우징 및 상기 커버를 관통하여 설치되는 회전축과, 상기 회전축과 상기 커버 사이에 설치되는 베어링, 및 냉각팬을 내부에 구비하고 상기 전동기 하우징의 타측에 설치되는 팬후드를 포함하는 전동기에 있어서, 커버는 중앙에 제1 중공홀이 형성되는 제1 본체부; 상기 제1 본체부의 내측면에 설치되는 제2 본체부; 및 상기 냉각팬에 의해 토출되는 공기로 상기 베어링을 냉각하기 위해, 상기 제1 본체부와 상기 제2 본체부의 사이에 형성되는 복수의 냉각유로;를 포함할 수 있다.In order to achieve the object of the present invention, the present invention provides a motor housing having a cooling fin installed on an outer circumferential surface thereof, a cover installed on one side of the motor housing, a rotating shaft installed through the motor housing and the cover, and the rotating shaft and the An electric motor having a bearing installed between the cover and a cooling fan therein and a fan hood installed on the other side of the motor housing, the cover comprising: a first body part having a first hollow hole formed at a center thereof; A second main body installed on the inner side of the first main body; And a plurality of cooling passages formed between the first body portion and the second body portion to cool the bearing with air discharged by the cooling fan.
또한, 본 발명에 의한 전동기 하우징용 커버의 다른 실시예에서, 전동기 하우징용 커버의 상기 제1 본체부와 상기 제2 본체부는 원 형상으로 형성되고, 상기 제2 본체부의 직경이 상기 제1 본체부의 직경보다 작게 형성되는 것이 바람직하다.Further, in another embodiment of the cover for a motor housing according to the present invention, the first body portion and the second body portion of the cover for the motor housing is formed in a circular shape, the diameter of the second body portion is the first body portion It is preferably formed smaller than the diameter.
또한, 본 발명에 의한 전동기 하우징용 커버의 다른 실시예에서, 전동기 하우징용 커버의 제2 본체부는 중앙에 제2 중공홀 형성되는 베이스부; 상기 회전축의 원주방향을 따라 상기 베이스부의 둘레면에 이격되게 형성되는 복수의 연결부; 상기 베이스부의 외측면에 돌출되게 형성되는 제1 돌출부; 상기 제1 돌출부와 마주하도록 상기 베이스부의 내측면에 돌출되게 형성되는 제2 돌출부; 및 상기 베어링을 장착하기 위해, 상기 제1 돌출부와 상기 제2 돌출부 사이에 형성되는 안착홈부;를 포함할 수 있다.In addition, in another embodiment of the cover for the motor housing according to the present invention, the second body portion of the cover for the motor housing is a base portion having a second hollow hole in the center; A plurality of connecting portions formed to be spaced apart from the circumferential surface of the base portion along the circumferential direction of the rotation shaft; A first protrusion formed to protrude from an outer surface of the base part; A second protrusion formed to protrude on an inner surface of the base portion so as to face the first protrusion; And a mounting recess formed between the first protrusion and the second protrusion to mount the bearing.
또한, 본 발명에 의한 전동기 하우징용 커버의 다른 실시예에서, 전동기 하우징용 커버의 제2 본체부는 상기 각각의 연결부에서 상기 제1 돌출부의 상단면까지 연장 형성되는 복수의 리브;를 더 포함할 수 있다.In addition, in another embodiment of the cover for the motor housing according to the present invention, the second body portion of the cover for the motor housing may further include a plurality of ribs extending from the respective connecting portion to the upper end surface of the first protrusion; have.
또한, 본 발명에 의한 전동기 하우징용 커버의 다른 실시예에서, 전동기 하우징용 커버의 제2 본체부의 베이스부의 둘레면은 상기 베이스부의 내측면에서 상기 베이스부의 외측면까지 상기 회전축과 평행한 선에 대해 소정의 경사각을 갖도록 경사지게 형성될 수 있다.Further, in another embodiment of the cover for a motor housing according to the present invention, the circumferential surface of the base portion of the second body portion of the cover for the motor housing is about a line parallel to the rotation axis from the inner surface of the base portion to the outer surface of the base portion. It may be formed to be inclined to have a predetermined inclination angle.
또한, 본 발명에 의한 전동기 하우징용 커버의 다른 실시예에서, 전동기 하우징용 커버의 제2 본체부의 베이스부의 둘레면의 경사각은 상기 회전축과 평행한 선에 대해 0도 이상 내지 60도 이하의 각도가 되도록 형성되는 것이 바람직하다.Further, in another embodiment of the cover for a motor housing according to the present invention, the inclination angle of the circumferential surface of the base of the second body portion of the cover for the motor housing is an angle of 0 degrees or more and 60 degrees or less with respect to the line parallel to the rotation axis. It is preferably formed to be.
또한, 본 발명에 의한 전동기 하우징용 커버의 다른 실시예에서, 전동기 하우징용 커버의 제1 본체부의 내측면은 상기 제1 본체부의 외주면에서 상기 제1 본체부의 내주면까지 상기 회전축과 수직한 선에 대해 소정의 경사각을 갖도록 형성될 수 있다.Further, in another embodiment of the cover for a motor housing according to the present invention, the inner surface of the first body portion of the cover for the motor housing is about a line perpendicular to the rotation axis from the outer peripheral surface of the first body portion to the inner peripheral surface of the first body portion It may be formed to have a predetermined inclination angle.
또한, 본 발명에 의한 전동기 하우징용 커버의 다른 실시예에서, 전동기 하우징용 커버는 제1 본체부의 내측면의 경사각은 상기 회전축과 수직한 선에 대해 0도 이상 내지 40도 이하의 각도가 되도록 형성되는 것이 바람직하다.In addition, in another embodiment of the cover for the motor housing according to the present invention, the cover for the motor housing is formed such that the inclination angle of the inner surface of the first body portion is an angle of 0 degrees or more and 40 degrees or less with respect to the line perpendicular to the rotation axis. It is desirable to be.
본 발명에 의한 전동기 하우징용 커버는 냉각팬에 의해 토출된 공기가 전동기 하우징의 외주면에 설치된 냉각핀을 따라 전동기 하우징의 전면으로 유동하면서 전동기 하우징을 1차적으로 냉각한 후에 전동기 하우징의 외부로 버려지는 공기로 전동기 하우징용 커버에 설치된 베어링을 2차적으로 냉각함에 따라 베어링의 열변형과 이에 따른 파손을 방지할 수 있는 효과가 있다.In the cover for the motor housing according to the present invention, the air discharged by the cooling fan flows to the front surface of the motor housing along the cooling fins provided on the outer circumferential surface of the motor housing, and is then discarded to the outside of the motor housing after the motor housing is first cooled. Secondary cooling of the bearing installed in the cover for the motor housing with air has the effect of preventing thermal deformation of the bearing and its damage.
또한, 본 발명에 의한 전동기 하우징용 커버는 냉각유로를 통해 냉각팬에서 토출된 공기로 베어링을 2차적으로 냉각하여 에너지 소모를 최소화하고, 베어링에 서 발생되는 열이 전동기 하우징의 내부로 유입되는 것을 방지하여 전동기 효율을 증대시킬 수 있는 효과가 있다.In addition, the cover for the motor housing according to the present invention is to minimize the energy consumption by cooling the bearing secondary to the air discharged from the cooling fan through the cooling flow path, the heat generated from the bearing is introduced into the interior of the motor housing There is an effect that can increase the efficiency of the motor by preventing.
더욱이, 본 발명에 의한 전동기 하우징용 커버는 제1 본체부와 제2 본체부 사이에 형성되는 냉각유로를 통해 베어링을 냉각함에 따라 베어링의 냉각을 위해 별도의 강제 통풍 장치와 같은 구성을 추가할 필요가 없이 기존의 냉각팬에서 송풍되는 공기로 전동기 하우징을 1차적으로 냉각한 후에, 2차적으로 베어링을 냉각함여 전동기 하우징용 커버의 제조비용을 절감하고, 전동기의 소형화를 도모할 수 있는 효과가 있다.Furthermore, the cover for the motor housing according to the present invention needs to add a configuration such as a separate forced ventilation device for cooling the bearing as the bearing is cooled through a cooling passage formed between the first body portion and the second body portion. After cooling the motor housing primarily with the air blown from the existing cooling fan without cooling, the bearing is secondarily cooled to reduce the manufacturing cost of the cover for the motor housing and reduce the size of the motor. .
도 1은 종래 전동기의 개략적인 구조를 설명하기 위한 단면도이다.1 is a cross-sectional view for explaining a schematic structure of a conventional electric motor.
도 2는 종래 공냉식 전동기의 후방 분해 사시도를 나타낸다.Figure 2 shows a rear exploded perspective view of a conventional air-cooled electric motor.
도 3은 본 발명의 일 실시예에 따른 전동기 하우징용 커버를 구비한 전동기의 사시도를 나타낸다.Figure 3 shows a perspective view of a motor with a cover for the motor housing according to an embodiment of the present invention.
도 4는 본 발명의 일 실시예에 따른 전동기 하우징용 커버의 전방 사시도를 나타낸다.4 is a front perspective view of the cover for the motor housing according to an embodiment of the present invention.
도 5는 본 발명의 일 실시예에 따른 전동기 하우징용 커버의 후방 사시도를 나타낸다.Figure 5 shows a rear perspective view of the cover for the motor housing according to an embodiment of the present invention.
도 6은 도 5의 I-I 선의 측단면도를 나타낸다.FIG. 6 is a side cross-sectional view of the line II of FIG. 5.
도 7은 도 6의 A부분의 확대도를 나타낸다.FIG. 7 is an enlarged view of portion A of FIG. 6.
도 8은 도 6의 B부분의 확대도를 나타낸다.8 is an enlarged view of a portion B of FIG. 6.
본 발명의 바람직한 실시예를 첨부된 도면들을 참조하여 상세히 설명한다. 우선 각 도면의 구성요소들에 참조번호를 부가함에 있어서, 동일한 구성요소들에 대해서는 동일한 부호를 가지도록 하고 있다.Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to components of each drawing, the same components are designated by the same reference numerals.
도 3은 본 발명의 일 실시예에 따른 전동기 하우징용 커버를 구비한 전동기의 사시도를 나타내고, 도 4는 본 발명의 일 실시예에 따른 전동기 하우징용 커버의 전방 사시도를 나타내며, 도 5는 본 발명의 일 실시예에 따른 전동기 하우징용 커버의 후방 사시도를 나타낸다. 도 6은 도 5의 I-I 선의 측단면도를 나타내고, 도 7은 도 6의 A부분의 확대도를 나타내며, 도 8은 도 6의 B부분의 확대도를 나타낸다.Figure 3 shows a perspective view of a motor with a cover for the motor housing according to an embodiment of the present invention, Figure 4 shows a front perspective view of a cover for the motor housing according to an embodiment of the present invention, Figure 5 is a present invention Rear perspective view of the cover for the motor housing according to an embodiment of the. 6 is a side cross-sectional view of the line I-I of FIG. 5, FIG. 7 is an enlarged view of portion A of FIG. 6, and FIG. 8 is an enlarged view of portion B of FIG. 6.
이하에서, 사용되는 "내측면", "외측면", "내주면", "외주면"의 용어를 정의한다. "내측면"은 전동기 하우징의 내부와 인접한 방향의 면을 의미하고, "외측면"은 상기 내측면과 반대되는 면, 즉 외부와 인접한 방향의 면을 의미한다. 또한, "내주면"은 회전축을 기준으로 회전축에 인접한 회전축의 원주방향의 면을 의미하고, "외주면"은 회전축을 기준으로 내주면보다 회전축에서 상대적으로 멀리 떨어져 있는 회전축의 원주방향 면을 의미한다.Hereinafter, the terms "inner surface", "outer surface", "inner surface", and "outer surface" used are defined. "Inner surface" means a surface in a direction adjacent to the inside of the motor housing, and "outer surface" means a surface opposite to the inner surface, that is, a surface in a direction adjacent to the outside. In addition, "inner circumferential surface" means a circumferential surface of the rotation axis adjacent to the rotation axis with respect to the rotation axis, and "outer circumferential surface" means a circumferential surface of the rotation axis relatively far from the rotation axis relative to the inner circumferential surface with respect to the rotation axis.
도 3 내지 도 8을 참조하여 본 발명의 일 실시예에 따른 전동기 하우징용 커버(10)를 설명한다. 도 3 내지 도 6에 도시된 것처럼, 본 발명의 일 실시예에 따른 전동기 하우징용 커버(10)는 제1 본체부(100), 제2 본체부(300), 및 복수의 냉각유로(300)로 이루어진다.3 to 8 illustrate a cover 10 for a motor housing according to an embodiment of the present invention. As shown in FIGS. 3 to 6, the cover 10 for an electric motor housing according to an embodiment of the present invention includes a first main body part 100, a second main body part 300, and a plurality of cooling flow paths 300. Is made of.
상술한 바와 같이, 전동기(1)는 원통 형상의 전동기 하우징(2)을 포함한다. 전동기 하우징(2)의 외주면에 전동기 하우징(2)의 길이방향을 따라 소정 간격으로 이격되도록 다수의 냉각핀(3)이 설치된다. As described above, the motor 1 includes a cylindrical motor housing 2. A plurality of cooling fins 3 are installed on the outer circumferential surface of the motor housing 2 so as to be spaced apart at predetermined intervals along the longitudinal direction of the motor housing 2.
전동기 하우징(2)의 일측에 커버(10)가 설치된다. 회전축(7)이 전동기 하우징(2) 및 상커버(10)를 관통하여 설치된다. 베어링(6)이 회전축(7)과 커버(10) 사이에 설치된다. The cover 10 is installed on one side of the motor housing 2. The rotary shaft 7 is installed through the motor housing 2 and the top cover 10. A bearing 6 is installed between the rotary shaft 7 and the cover 10.
팬후드(4)가 커버(10)와 마주하도록 전동기 하우징(2)의 타측에 설치된다. 팬후드(4)의 내부에 냉각팬(5)이 설치된다. 즉, 냉각팬(5)은 팬후드(4)의 내부에서 회전축(7)과 동시에 회전하도록 회전축(7)의 일단에 설치된다.The fan hood 4 is installed on the other side of the motor housing 2 so as to face the cover 10. The cooling fan 5 is installed inside the fan hood 4. That is, the cooling fan 5 is installed at one end of the rotation shaft 7 so as to rotate simultaneously with the rotation shaft 7 inside the fan hood 4.
커버(10)의 제1 본체부(100)는 회전축(7)이 삽입 체결될 수 있도록 중앙에 제1 중공홀(110)이 형성된다.The first body portion 100 of the cover 10 has a first hollow hole 110 is formed in the center so that the rotation shaft 7 can be inserted and fastened.
커버(10)의 제2 본체부(200)가 제1 본체부의 내측면(130)에 설치된다.The second main body 200 of the cover 10 is installed on the inner surface 130 of the first main body.
냉각팬(5)에 의해 토출되는 공기로 회전축(7)과 커버(10) 사이에 설치되는 베어링(6)을 냉각하기 위해, 복수의 냉각유로(300)가 제1 본체부(100)와 제2 본체부(200)의 사이에 형성된다. 즉, 복수의 냉각유로(300)가 제1 본체부의 내측면(130)과 제2 본체부의 베이스부의 외측면(212) 사이에 형성된다. In order to cool the bearing 6 installed between the rotary shaft 7 and the cover 10 by the air discharged by the cooling fan 5, a plurality of cooling passages 300 are formed with the first main body 100 and the first main body 100. It is formed between two main body parts 200. That is, a plurality of cooling passages 300 are formed between the inner surface 130 of the first body portion and the outer surface 212 of the base portion of the second body portion.
도 4 내지 도 6에 도시된 것처럼, 본 발명의 바람직한 일 실시예에 따르면 제1 본체부(100)와 제2 본체부(200)는 원 형상, 즉 원판 형상으로 형성된다. 4 to 6, according to an exemplary embodiment of the present invention, the first body part 100 and the second body part 200 are formed in a circular shape, that is, a disc shape.
또한, 원판 형상으로 형성되는 제2 본체부(200)의 직경(d)이 원판 형상으로 형성되는 제1 본체부(100)의 직경(D)보다 작게 형성된다. 이에 따라, 냉각팬(5)을통해 토출되는 공기가 냉각핀(3) 사이로 전동기 하우징(2)의 외주면을 따라 전동기 하우징(2)을 냉각하면서 냉각팬(5)이 설치된 전동기 하우징(2)의 반대편(전동기 하우징의 전면)으로 유동한 후에, 공기가 제1 본체부의 내측면(130)과 제2 본체부의 베이스부의 외측면(212) 사이에 형성되는 복수의 냉각유로(300)로 유입되고, 유입된 공기로 베어링을 냉각하게 된다.In addition, the diameter (d) of the second body portion 200 formed in a disk shape is formed smaller than the diameter (D) of the first body portion 100 formed in a disk shape. Accordingly, the air discharged through the cooling fan 5 cools the motor housing 2 along the outer circumferential surface of the motor housing 2 between the cooling fins 3 of the motor housing 2 in which the cooling fan 5 is installed. After flowing to the opposite side (front of the motor housing), air flows into the plurality of cooling passages 300 formed between the inner surface 130 of the first body portion and the outer surface 212 of the base portion of the second body portion, The incoming air cools the bearings.
이처럼, 종래 냉각핀을 따라 전동기 하우징만을 냉각하고 버려지는 공기가 커버(10)의 제1 본체부의 내측면(130)과 제2 본체부의 베이스부의 외측면(212) 사이에 형성되는 복수의 냉각유로(300)로 유입되어 베어링을 냉각할 수 있게 된다. As such, a plurality of cooling flow paths in which air that is cooled and discarded only in the motor housing along the conventional cooling fins is formed between the inner surface 130 of the first body portion of the cover 10 and the outer surface 212 of the base portion of the second body portion. Inflow to the 300 is to cool the bearing.
따라서, 본 발명에 의한 전동기 하우징용 커버(10)는 별도의 공기의 강제송풍장치를 설치할 필요없이, 기존에 전동기 하우징을 냉각하기 위해 설치되는 냉각팬에서 송풍되는 공기를 2차적으로 활용하여 베어링을 냉각함에 따라, 전동기의 전체적인 제조비용을 절감하고, 전동기의 소형화들 도모할 수 있다. Therefore, the cover 10 for the motor housing according to the present invention utilizes the air blown from the cooling fan that is conventionally installed to cool the motor housing, without having to install a separate forced air blower. By cooling, the overall manufacturing cost of an electric motor can be reduced and motor miniaturization can be attained.
도 4 내지 도 6에 도시된 것처럼, 본 발명의 일 실시예에 따른 전동기 하우징용 커버(10)의 제2 본체부(200)는 베이스부(210), 복수의 연결부(220), 제1 돌출부(230), 제2 돌출부(240), 및 안착홈부(250)를 포함한다.4 to 6, the second main body 200 of the cover 10 for a motor housing according to an embodiment of the present invention is a base portion 210, a plurality of connecting portions 220, the first protrusion 230, a second protrusion 240, and a seating recess 250.
제2 본체부의 베이스부(210)는 중앙에 제2 중공홀(211)이 형성된다. 이에 따라, 회전축(7)은 제1 본체부(100)의 제1 중공홀(110)과 제2 본체부의 베이스부(210)에 형성된 제2 중공홀(211)을 관통하여, 전동기 하우징(2)의 후방으로 관통하여 설치된다. 상술한 바와 같이 제2 본체부의 베이스부(210)도 원판 형상으로 형성된다.The second hollow hole 211 is formed at the center of the base portion 210 of the second body portion. Accordingly, the rotating shaft 7 penetrates through the second hollow hole 211 formed in the first hollow hole 110 of the first main body part 100 and the base portion 210 of the second main body part 100, thereby providing a motor housing 2. Is installed through the back of the). As described above, the base portion 210 of the second body portion is also formed in a disc shape.
복수의 연결부(220)가 회전축의 원주방향을 따라 베이스부의 둘레면(214)에 이격되게 형성된다. 반드시 이에 한정되는 것은 아니지만, 복수의 연결부(220)는 베이스부의 둘레면(214)에 회전축에 대해 소정의 각도로 이격되게 형성될 수 있다. 예를 들어, 120도의 각도로 회전축의 원주방향을 따라 베이스부의 둘레면(214)에 3개가 형성될 수 있다. 바람직하게는 90도 또는 60도의 각도로 회전축의 원주방향을 따라 베이스부의 둘레면(214)에 4개 또는 6개가 형성될 수 있다. 가장 바람직하게는 45도의 각도로 회전축의 원주방향을 따라 베이스부의 둘레면(214)에 8개가 형성될 수 있다. The plurality of connection parts 220 are formed to be spaced apart from the circumferential surface 214 of the base part in the circumferential direction of the rotation shaft. Although not necessarily limited thereto, the plurality of connection parts 220 may be formed on the circumferential surface 214 of the base part so as to be spaced apart by a predetermined angle with respect to the rotation axis. For example, three may be formed on the circumferential surface 214 of the base portion along the circumferential direction of the rotation shaft at an angle of 120 degrees. Preferably, four or six may be formed on the circumferential surface 214 of the base portion along the circumferential direction of the rotation shaft at an angle of 90 degrees or 60 degrees. Most preferably, eight may be formed on the circumferential surface 214 of the base portion along the circumferential direction of the rotation shaft at an angle of 45 degrees.
제1 돌출부(230)가 베이스부의 외측면(212)에 돌출되게 형성된다.The first protrusion 230 is formed to protrude on the outer surface 212 of the base portion.
제2 돌출부(240)가 제1 돌출부(230)와 마주하도록 베이스부의 내측면(213)에 돌출되게 형성된다.The second protrusion 240 is formed to protrude on the inner side surface 213 of the base part so as to face the first protrusion 230.
안착홈부(250)가 제1 돌출부(230)와 제2 돌출부(240) 사이에 형성된다. 안착홈부(250)에 베어링이 장착된다. 회전축(7)은 안착홈부(250)에 설치되는 베어링(6)을 매개로 하여 커버의 제1 본체부의 제1 중공홀(110)과 제2 본체부의 베이스부의 제2 중공홀(211)을 관통하여 전동기 하우징(2)에 회전가능하게 설치된다. 즉, 회전축(7)의 일부가 안착홈부(250)에 장착되는 베어링(6)과 접촉하면서 고정자와 회전자의 상호 작용에 의해 고속으로 회전함에 따라, 베어링의 온도가 상승하게 된다. The seating groove 250 is formed between the first protrusion 230 and the second protrusion 240. The bearing is mounted in the seating groove 250. The rotary shaft 7 passes through the first hollow hole 110 of the first body part of the cover and the second hollow hole 211 of the base part of the second body part via a bearing 6 installed in the seating groove 250. It is rotatably installed in the motor housing (2). That is, as a part of the rotating shaft 7 rotates at a high speed by the interaction of the stator and the rotor while contacting the bearing 6 mounted on the seating groove 250, the temperature of the bearing rises.
도 4 내지 도 5에 도시된 것처럼, 본 발명의 다른 일 실시예에 따른 제2 본체부는 복수의 리브(260)를 더 포함한다.4 to 5, the second body portion according to another embodiment of the present invention further includes a plurality of ribs 260.
각각의 리브(260)가 각각의 연결부(220)에서 제1 돌출부(230)의 상단면까지 연장 형성된다. 즉, 리브(260)의 외측면은 제1 본체부의 내측면(130)에 접촉되고, 리브(260)의 내측면은 제2 본체부의 베이스부의 외측면(212)에 접촉되도록 연결부(220)에서 제1 돌출부(230)의 상단면까지 연장 형성된다. Each rib 260 extends from each connection portion 220 to the top surface of the first protrusion 230. That is, the outer surface of the rib 260 contacts the inner surface 130 of the first body portion, and the inner surface of the rib 260 contacts the outer surface 212 of the base portion of the second body portion at the connecting portion 220. It extends to the top surface of the first protrusion 230.
도 5에 도시된 것처럼, 각각의 리브(260)가 각각의 연결부(220)에서 제1 돌출부(230)의 상단면까지 연장 형성됨에 따라, 복수의 냉각유로(300) 채널이 형성되어 회전축의 고속회전에 의한 마찰열로 온도가 증가된 베어링을 효과적으로 냉각할 수 있게 된다. 본 발명의 바람직한 일 실시예에 따르면, 각각의 냉각유로(300)는 인접하는 연결부(220)에서 제1 돌출부(230)의 상단면까지 연장 형성되는 2개의 리브(260)와 제1 본체부의 내측면(130) 및 제2 본체부의 베이스부의 외측면(212) 사이에 형성되는 공간부와 제1 돌출부(230)의 상단면을 따라 제2 중공홀(211)과 제1 중공홀(110)까지 이어지는 통로에 의해 형성된다. 즉, 냉각핀(3)을 따라 전동기 하우징(2)의 전면으로 유동되는 공기는 베이스부의 둘레면(214)과 제1 본체부의 내측면(130)을 따라 인접하는 연결부(220)에 연장 형성되는 리브(260) 사이의 공간으로 유입되어 제1 돌출부(230)의 상단면을 따라 전동기 하우징(2)의 전면으로 이동된다. 이때, 이동되는 공기가 안착홈부(250)에 장착된 베어링을 냉각하게 된다. 베어링을 냉각하고 난 이후의 공기는 제2 중공홀(211)과 제1 중공홀(110)을 통과하여 전동기 하우징(2)의 외부로 배출된다. As shown in FIG. 5, as each rib 260 extends from each connection portion 220 to an upper end surface of the first protrusion 230, a plurality of cooling flow path 300 channels are formed to form a high speed shaft. The frictional heat caused by the rotation makes it possible to effectively cool the bearings having increased temperature. According to one preferred embodiment of the present invention, each cooling passage 300 is formed in the two ribs 260 and the first body portion extending from the adjacent connecting portion 220 to the top surface of the first protrusion 230 To the second hollow hole 211 and the first hollow hole 110 along the upper surface of the first portion 230 and the space portion formed between the side surface 130 and the outer surface 212 of the base portion of the second body portion. It is formed by the passage that follows. That is, air flowing to the front surface of the motor housing 2 along the cooling fins 3 extends to the adjacent connecting portion 220 along the circumferential surface 214 of the base portion and the inner surface 130 of the first body portion. Flow into the space between the ribs 260 is moved along the upper surface of the first protrusion 230 to the front of the motor housing (2). At this time, the moving air cools the bearing mounted on the seating groove 250. After cooling the bearing, air passes through the second hollow hole 211 and the first hollow hole 110 to be discharged to the outside of the motor housing 2.
도 7에 도시된 것처럼, 본 발명의 다른 일 실시예에 따른 제2 본체부의 베이스부의 둘레면(214)은 베이스부의 내측면(213)에서 베이스부의 외측면(212)까지 회전축과 평행한 선(L)에 대해 소정의 경사각(α)을 갖도록 경사지게 형성된다. 베이스부의 둘레면(214)이 베이스부의 내측면(213)에서 베이스부의 외측면(212)까지 회전축과 평행산 선(L)에 대해 경사각을 갖도록 경사지게 형성됨에 따라, 냉각핀(3)을 따라 전동기 하우징(2)의 전면으로 유동되는 공기가 베이스부의 둘레면(214)과 제1 본체부의 내측면(130)을 따라 인접하는 연결부(220)에 연장 형성되는 리브(260) 사이의 공간으로 용이하게 유입되게 된다.As shown in FIG. 7, the circumferential surface 214 of the base portion of the second body portion according to another embodiment of the present invention is a line parallel to the axis of rotation from the inner surface 213 of the base portion to the outer surface 212 of the base portion ( It is formed to be inclined so as to have a predetermined inclination angle α with respect to L). As the circumferential surface 214 of the base portion is formed to be inclined to have an inclination angle with respect to the axis of rotation parallel to the axis of rotation L from the inner side surface 213 of the base portion to the outer side surface 212 of the base portion, the electric motor along the cooling fin 3 Air flowing to the front surface of the housing 2 is easily provided to the space between the circumferential surface 214 of the base portion and the rib 260 extending along the inner surface 130 of the first body portion and adjacent to the connecting portion 220. It will flow in.
바람직하게는, 베이스부의 둘레면(214)의 경사각(α)은 회전축과 평행한 선(L)에 대해 0도 이상 내지 60도 이하의 경사각을 갖도록 경사지게 형성된다.(0°≤α≤60°) 경사각(α)이 60도를 초과하는 경우에는, 제1 본체부의 내측면(130)과 베이스부의 외측면(212) 사이로 유입되는 공기의 속도가 빨라져서 제1 본체부의 내측면(130)에 부딪쳐서 와류를 형성하게 되고, 이에 따라 오히려 제1 돌출부의 상단면까지 유동되는 공기의 양이 적어져서 베어링을 충분히 냉각할 수 없기 때문이다.Preferably, the inclination angle α of the circumferential surface 214 of the base portion is inclined so as to have an inclination angle of 0 degrees or more and 60 degrees or less with respect to the line L parallel to the axis of rotation. (0 ° ≦ α ≦ 60 ° When the inclination angle α exceeds 60 degrees, the velocity of air flowing between the inner side surface 130 of the first body portion and the outer side surface 212 of the base portion is increased to hit the inner side surface 130 of the first body portion. This is because the vortex is formed, and thus the amount of air flowing to the upper end surface of the first protrusion is small, so that the bearing cannot be sufficiently cooled.
도 8에 도시된 것처럼, 본 발명의 또 다른 일 실시예에 따른 제1 본체부의 내측면(130)은 제1 본체부의 외주면(140)에서 제1 본체부의 내주면(150)까지 회전축과 수직한 선(H)에 대해 소정의 경사각(β)을 갖도록 형성된다. 제1 본체부의 내측면(130)이 제1 본체부의 외주면(140)에서 제1 본체부의 내주면(150)까지 회전축과 수직한 선(H)에 대해 경사각(β)을 갖도록 경사지게 형성됨에 따라, 냉각핀(3)을 통해 전동기 하우징(2)의 전면으로 유동하는 공기중에서 제1 본체부(130)의 내측면(130)과 베이스부의 외측면(212) 사이로 유입되는 공기양이 증가하게 된다.As shown in FIG. 8, the inner side surface 130 of the first body portion according to another embodiment of the present invention is a line perpendicular to the rotation axis from the outer circumferential surface 140 of the first body portion to the inner circumferential surface 150 of the first body portion. It is formed to have a predetermined inclination angle β with respect to (H). As the inner surface 130 of the first body portion is inclined to have an inclination angle β with respect to the line H perpendicular to the rotation axis from the outer circumferential surface 140 of the first body portion to the inner circumferential surface 150 of the first body portion, cooling The amount of air introduced between the inner surface 130 of the first body 130 and the outer surface 212 of the base in the air flowing to the front of the motor housing 2 through the pin 3 is increased.
바람직하게는, 제1 본체부의 내측면(130)의 경사각(β)은 회전축과 수직한 선(H)에 대해 O도 이상 내지 40도 이하의 경사각(β)을 갖도록 경사지게 형성된다.(0°≤β≤40°) 경사각(β)이 40도를 초과하는 경우에는 커버의 구조적 안정성이 감소되어 전동기의 구동중에 발생하는 진동에 의해 커버 특히 제1 본체부의 내주면 근처에 균열이 발생할 수 있고, 제조비용이 증가하게 되는 문제점이 있다. Preferably, the inclination angle β of the inner surface 130 of the first body portion is inclined so as to have an inclination angle β of not less than 0 degrees and not more than 40 degrees with respect to the line H perpendicular to the rotation axis. ≤ β ≤ 40 °) When the inclination angle β exceeds 40 degrees, the structural stability of the cover is reduced, and a crack may occur near the inner circumferential surface of the cover, in particular, the first body part, due to vibration generated during driving of the motor. There is a problem that the cost is increased.
표 1은 종래 전동기 하우징용 커버에서 동일한 조건으로 작동된 상태에서 베어링의 온도와 본 발명에 의한 전동기 하우징용 커버에서 베어링의 온도를 나타낸다.Table 1 shows the temperature of the bearing and the temperature of the bearing in the cover for the motor housing according to the present invention in the state operated in the same condition in the cover for the conventional motor housing.
Figure PCTKR2015014413-appb-T000001
Figure PCTKR2015014413-appb-T000001
표 1에 나타난 것처럼, 냉각유로가 형성되지 않은 종래 전동기 하우징용 커버에서 베어링의 온도는 48.1도 였다. 그러나 본 발명에 의한 냉각유로가 형성된 전동기 하우징용 커버의 안착홈부에 설치된 베어링의 온도는 25.8도로 베어링이 냉각된다. 이처럼, 베어링의 냉각효율이 50%이상 증가함에 따라 베어링의 온도증가로 인한 베어링의 열변형과 파손을 방지하고, 베어링에서 발생된 열이 전동기 하우징 내부로 유입되는 것을 방지하여 전동기의 효율을 증대시킬 수 있다.As shown in Table 1, the temperature of the bearing was 48.1 degrees in the cover for the conventional motor housing in which no cooling flow path was formed. However, the temperature of the bearing installed in the seating groove of the cover for the motor housing in which the cooling flow path is formed according to the present invention is cooled to 25.8 degrees. As such, as the cooling efficiency of the bearing increases by more than 50%, the thermal deformation and breakage of the bearing due to the increase of the bearing temperature are prevented, and the heat generated from the bearing is prevented from flowing into the motor housing to increase the efficiency of the motor. Can be.
도 3 및 도 6 내지 도 8을 참조하여 본 발명의 일 실시예에 따른 전동기 하우징용 커버에서 베어링 냉각을 위한 공기의 이동경로를 설명한다.Referring to Figures 3 and 6 to 8 will be described the movement path of the air for cooling the bearing in the cover for the motor housing according to an embodiment of the present invention.
고정자의 코일에 인가된 전류에 의해 발생되는 자속과 회전자의 전자기 유도에 의해 회전자가 회전함에 따라 회전축이 회전한다. 회전축의 회전에 의해 베어링의 온도가 상승하게 된다. 회전축의 회전에 의해 전동기 하우징의 타측에 설치된 냉각팬이 구동된다. 냉각팬의 구동에 따라 전동기 하우징의 전면(냉각팬이 설치되는 전동기 하우징의 반대편)으로 냉각핀 사이를 따라 공기가 유동된다. 전동기 하우징의 전면으로 유동된 공기는 베이스부의 둘레면에 형성되는 경사각과 제1 본체부의 내측면에 형성되는 경사각에 의해 제1 본체부의 내측면과 제2 본체부의 베이스부의 내측면 사이로 유입된다. 제1 본체부의 내측면과 제2 본체부의 베이스부의 내측면 사이로 유입된 공기는 제1 돌출부의 상측면을 따라 회전축과 평행하도록 전동기 하우징의 전방으로 이동된다. 이때 베어링을 공냉방식으로 냉각하게 된다. 이후, 제2 중공홀과 제1 중공홀을 통과하여 커버의 외부로 배출된다. The rotating shaft rotates as the rotor rotates by the magnetic flux generated by the current applied to the coil of the stator and the electromagnetic induction of the rotor. The temperature of the bearing is increased by the rotation of the rotating shaft. The cooling fan installed on the other side of the motor housing is driven by the rotation of the rotary shaft. As the cooling fan is driven, air flows between the cooling fins to the front of the motor housing (opposite to the motor housing in which the cooling fan is installed). Air flowing to the front surface of the motor housing is introduced between the inner surface of the first body portion and the inner surface of the base portion of the second body portion by the inclination angle formed on the inner surface of the base portion and the inclination angle formed on the inner surface of the first body portion. Air introduced between the inner surface of the first body portion and the inner surface of the base portion of the second body portion is moved forward of the motor housing along the upper surface of the first protrusion so as to be parallel to the rotation axis. At this time, the bearing is cooled by the air cooling method. Thereafter, the second hollow hole and the first hollow hole are discharged to the outside of the cover.
본 발명은 도면에 도시된 변형예와 상기에서 설명된 실시예에 국한되지 않으며, 첨부된 청구항의 범주내에 속하는 다른 실시예로 확장될 수 있다.The invention is not limited to the embodiments shown in the figures and the embodiments described above, but may be extended to other embodiments falling within the scope of the appended claims.
* 부호의 설명* Explanation of the sign
1 : 전동기, 2 : 전동기 하우징,1: motor, 2: motor housing,
3 : 냉각핀, 4 : 팬후드,3: cooling fin, 4: fan hood,
5 : 냉각팬, 6 : 베어링,5: cooling fan, 6: bearing,
7 : 회전축, 8 : 고정자, 7: axis of rotation, 8: stator,
9 : 회전자, 10 : 커버,9: rotor, 10: cover,
100 : 제1 본체부, 110 : 중공홀,100: first body portion, 110: hollow hole,
120 : 외측면, 130 : 내측면,120: outer side, 130: inner side,
140 : 외주면, 150 : 내주면,140: outer peripheral surface, 150: inner peripheral surface,
200 : 제2 본체부, 210 : 베이스부,200: second body portion, 210: base portion,
211 : 제2 중공홀, 212 : 외측면,211: second hollow hole, 212: outer surface,
213 : 내측면, 214 : 둘레면,213: inner side, 214: circumferential side,
220 : 연결부, 230 : 제1 돌출부,220: connecting portion, 230: first protrusion,
240 : 제2 돌출부, 250 : 안착홈부,240: second protrusion, 250: mounting groove,
260 : 리브, 300 : 냉각유로,260: rib, 300: cooling flow path,
D : 제1 본체부의 직경, d : 제2 본체부의 직경,D: diameter of the first body portion, d: diameter of the second body portion,
L : 회전축과 평행한 선, H : 회전축과 수직한 선L: Line parallel to the axis of rotation, H: Line perpendicular to the axis of rotation
α: 베이스부의 둘레면의 경사각, α: inclination angle of the peripheral surface of the base portion,
β : 제1 본체부의 내측면의 경사각.β: inclination angle of the inner surface of the first body portion.
본 발명은 전동기 하우징용 커버에 관한 것으로서, 전동기 분야에 이용 가능하다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover for a motor housing and can be used in the field of motors.

Claims (8)

  1. 외주면에 냉각핀이 설치되는 전동기 하우징과, 상기 전동기 하우징의 일측에 설치되는 커버와, 상기 전동기 하우징 및 상기 커버를 관통하여 설치되는 회전축과, 상기 회전축과 상기 커버 사이에 설치되는 베어링, 및 냉각팬을 내부에 구비하고 상기 전동기 하우징의 타측에 설치되는 팬후드를 포함하는 전동기에 있어서,A motor housing having a cooling fin installed on an outer circumferential surface thereof, a cover installed on one side of the motor housing, a rotation shaft installed through the motor housing and the cover, a bearing installed between the rotation shaft and the cover, and a cooling fan In the motor comprising a fan hood provided therein and installed on the other side of the motor housing,
    상기 커버는,The cover,
    중앙에 제1 중공홀이 형성되는 제1 본체부;A first body part having a first hollow hole formed in a center thereof;
    상기 제1 본체부의 내측면에 설치되는 제2 본체부; 및A second main body installed on the inner side of the first main body; And
    상기 냉각팬에 의해 토출되는 공기로 상기 베어링을 냉각하기 위해, 상기 제1 본체부와 상기 제2 본체부의 사이에 형성되는 복수의 냉각유로;를 포함하는 것을 특징으로 하는 전동기 하우징용 커버.And a plurality of cooling passages formed between the first body portion and the second body portion to cool the bearing with air discharged by the cooling fan.
  2. 제1항에 있어서,The method of claim 1,
    상기 제1 본체부와 상기 제2 본체부는 원 형상으로 형성되고,The first body portion and the second body portion is formed in a circular shape,
    상기 제2 본체부의 직경이 상기 제1 본체부의 직경보다 작게 형성되는 것을 특징으로 하는 전동기 하우징용 커버.The cover of the motor housing, characterized in that the diameter of the second body portion is formed smaller than the diameter of the first body portion.
  3. 제2항에 있어서,The method of claim 2,
    상기 제2 본체부는,The second body portion,
    중앙에 제2 중공홀 형성되는 베이스부;A base portion having a second hollow hole in a center thereof;
    상기 회전축의 원주방향을 따라 상기 베이스부의 둘레면에 이격되게 형성되는 복수의 연결부;A plurality of connecting portions formed to be spaced apart from the circumferential surface of the base portion along the circumferential direction of the rotation shaft;
    상기 베이스부의 외측면에 돌출되게 형성되는 제1 돌출부;A first protrusion formed to protrude from an outer surface of the base part;
    상기 제1 돌출부와 마주하도록 상기 베이스부의 내측면에 돌출되게 형성되는 제2 돌출부; 및A second protrusion formed to protrude on an inner surface of the base portion so as to face the first protrusion; And
    상기 베어링을 장착하기 위해, 상기 제1 돌출부와 상기 제2 돌출부 사이에 형성되는 안착홈부;를 포함하는 것을 특징으로 하는 전동기 하우징용 커버.And a mounting recess formed between the first protrusion and the second protrusion to mount the bearing.
  4. 제3항에 있어서,The method of claim 3,
    상기 제2 본체부는, The second body portion,
    상기 각각의 연결부에서 상기 제1 돌출부의 상단면까지 연장 형성되는 복수의 리브;를 더 포함하는 것을 특징으로 하는 전동기 하우징용 커버.And a plurality of ribs extending from the respective connecting portions to the top surface of the first protrusion.
  5. 제4항에 있어서,The method of claim 4, wherein
    상기 베이스부의 둘레면은,The peripheral surface of the base portion,
    상기 베이스부의 내측면에서 상기 베이스부의 외측면까지 상기 회전축과 평행한 선에 대해 소정의 경사각을 갖도록 경사지게 형성되는 것을 특징으로 하는 전동기 하우징용 커버.The cover for the motor housing, characterized in that the inclined to have a predetermined inclination angle with respect to the line parallel to the axis of rotation from the inner surface of the base portion to the outer surface of the base portion.
  6. 제5항에 있어서,The method of claim 5,
    상기 베이스부의 둘레면의 경사각은 상기 회전축과 평행한 선에 대해 O도 이상 내지 60도 이하인 것을 특징으로 하는 전동기 하우징용 커버.The inclination angle of the circumferential surface of the base portion is a cover for a motor housing, characterized in that more than 0 degrees to less than 60 degrees with respect to the line parallel to the rotation axis.
  7. 제4항에 있어서, The method of claim 4, wherein
    상기 제1 본체부의 내측면은,The inner side of the first body portion,
    상기 제1 본체부의 외주면에서 상기 제1 본체부의 내주면까지 상기 회전축과 수직한 선에 대해 소정의 경사각을 갖도록 형성되는 것을 특징으로 하는 전동기 하우징용 커버.The cover for the electric motor housing, characterized in that it has a predetermined inclination angle with respect to the line perpendicular to the rotation axis from the outer peripheral surface of the first body portion to the inner peripheral surface of the first body portion.
  8. 제7항에 있어서,The method of claim 7, wherein
    상기 제1 본체부의 내측면의 경사각은 상기 회전축과 수직한 선에 대해 0도 이상 내지 40도 이하인 것을 특징으로 하는 전동기 하우징용 커버.The inclination angle of the inner surface of the first body portion is a cover for a motor housing, characterized in that more than 0 degrees to less than 40 degrees with respect to the line perpendicular to the rotation axis.
PCT/KR2015/014413 2014-12-29 2015-12-29 Cover for motor housing WO2016108581A1 (en)

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CN112636515A (en) * 2020-12-22 2021-04-09 超音速智能技术(杭州)有限公司 Small-size motor element mounting structure and motor

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JPH0993865A (en) * 1995-09-29 1997-04-04 Hitachi Ltd Induction motor
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JPH05137296A (en) * 1991-11-14 1993-06-01 Mitsubishi Electric Corp Totally enclosed fan-cooled motor
JPH0993865A (en) * 1995-09-29 1997-04-04 Hitachi Ltd Induction motor
KR20040011059A (en) * 2002-07-27 2004-02-05 오티스 엘리베이터 컴파니 Cooling structure of motor
JP2010205977A (en) * 2009-03-04 2010-09-16 Konica Minolta Holdings Inc Thermoelectric conversion element
KR101464705B1 (en) * 2013-11-21 2014-12-12 차진호 Blower motor having bearing air cooling structure

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Publication number Priority date Publication date Assignee Title
CN112636515A (en) * 2020-12-22 2021-04-09 超音速智能技术(杭州)有限公司 Small-size motor element mounting structure and motor
CN112636515B (en) * 2020-12-22 2022-04-22 超音速智能技术(杭州)有限公司 Small-size motor element mounting structure

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