WO2016190558A1 - Screw compressor integrated with synchronous motor - Google Patents

Screw compressor integrated with synchronous motor Download PDF

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Publication number
WO2016190558A1
WO2016190558A1 PCT/KR2016/004463 KR2016004463W WO2016190558A1 WO 2016190558 A1 WO2016190558 A1 WO 2016190558A1 KR 2016004463 W KR2016004463 W KR 2016004463W WO 2016190558 A1 WO2016190558 A1 WO 2016190558A1
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WO
WIPO (PCT)
Prior art keywords
rotor
synchronous motor
stator
screw compressor
shaft
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PCT/KR2016/004463
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French (fr)
Korean (ko)
Inventor
김왕환
박진성
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한국에어로(주)
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Publication of WO2016190558A1 publication Critical patent/WO2016190558A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/18—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/20—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with dissimilar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00

Definitions

  • the present invention relates to a screw compressor, and more particularly, to a synchronous motor-integrated screw compressor having no coupling and bearings, which has a simplified structure.
  • a compressor is a means for generating mechanical energy by compressing gas, and there are reciprocating type, screw type, turbo type, and the like.
  • a screw type air compressor is composed of an air end with a rotor built therein and a motor for rotating the rotor provided in the air end, and the power of the rotating shaft of the motor is applied to the rotor.
  • a power transmission means for transmitting is provided.
  • Patent Documents 1 to 2 include a variety of technologies, including Patent Documents 1 to 2, of which Patent Document 1 is a vertical frame is fixed vertically installed on one side of the inner bottom surface of the case, the support plate on the upper side of the vertical frame Supported installation, the drive motor for generating power is supported and coupled to the lower side of the vertical frame, the air end is fixedly installed on the upper surface of the support plate, the pulley is fixedly coupled to the drive shaft and the rotor shaft of the air end after the vertical frame
  • the pulley is coupled so as to be interlocked by a belt, the rotor of the air end is rotated by the power of the drive motor to compress and suck the outside air, wherein one side of the support plate is rotated by the support means.
  • support plate Supported pivotally on the vertical frame, support plate
  • the support bracket is fixedly coupled to the vertical frame located on the other side lower part of the support, and the support post is fixedly coupled to the support bracket, and the support spring is supported by pushing the bottom of the other side of the support plate, and the support plate is supported by the elastic spring.
  • It relates to a screw-type air compressor which is configured to maintain the tension of the belt which is connected to the drive shaft of the drive motor and the pulley fixedly coupled to the rotor shaft of the air end while rotating,
  • Patent document 2 is a male rotor in which a helical protrusion is formed on the outer circumferential surface and a drive shaft is coupled;
  • a female rotor installed at one side of the male rotor and having a helical groove corresponding to the protrusion to rotate while the protrusion is inserted into the outer circumferential surface thereof;
  • First and second end covers for sealing both ends of the casing and rotatably supporting the drive shaft and the driven shaft;
  • a driving gear and a driven gear which are respectively formed on the driving shaft and the driven shaft so that the male rotor and the female rotor can rotate at the same time and are engaged with each other on the outside of the second end cover;
  • a gear box installed at one side of the second end cover to surround
  • these power transmission means have a problem that the sufficient power is not transmitted and the air compression ratio is low compared to the energy.
  • the bell housing and the shaft coupler are used for the combination of the induction motor and the air end, and thus the space occupied by them is large, making it difficult to handle by increasing the total volume.
  • the rotation axis of the induction motor and the rotation axis of the air end If the connection is not made correctly there was a problem such as vibration occurs.
  • an object of the present invention is to provide a synchronous motor-integrated screw compressor that is simple in structure and causes a breakdown, and is reduced in size and easy to handle.
  • the present invention is configured using a synchronous motor, but as the shaft is integrated by directly coupling the rotational axis of the air end to the rotor of the synchronous motor, it is possible to reduce the occurrence of insufficient power transmission or vibration caused by the inaccurate shaft coupling. It is possible to, of course, to provide a synchronous motor-integrated screw compressor that can reduce material costs.
  • Synchronous motor-integrated screw compressor for achieving the above object is an air end comprising two gate rotor, the main screw to rotate the gate rotor and the rotation shaft is extended;
  • a stator coil having a shaft hole through which the rotating shaft penetrates, a stator installed outside the rotor to rotate the rotor by generating a magnetic force, and a stator coil magnetizing the stator by power supplied to the stator.
  • a cover flange for covering and protecting the rotating shaft may be further installed between the air end and the synchronous motor.
  • the synchronous motor-integrated screw compressor according to the present invention has a simple structure to reduce the cause of failure, the size is reduced can be easily handled.
  • the shaft is integrated by directly coupling the rotary shaft of the air end to the rotor of the synchronous motor, it is possible to reduce the occurrence of insufficient power transmission or vibration due to the inaccuracy of the shaft coupling. There is an effect to reduce the.
  • FIG. 1 is a cross-sectional view of an example of a synchronous motor-integrated screw compressor according to the present invention
  • Figure 2 shows a part of an example of a synchronous motor-integrated screw compressor according to the present invention
  • FIG. 3 is an exploded perspective view illustrating an example of the synchronous motor-integrated screw compressor according to the present invention.
  • the rotary shaft 12s of the air end 10 is directly connected to the shaft hole 21h of the rotor 21 of the synchronous motor 20. Combined, the structure is simplified.
  • the screw compressor of the present invention includes two gate rotors 11 and an air end 10 including a main screw 12 in which the gate rotor is rotated and the rotating shaft 12s is extended.
  • the air end 10 substantially compresses air, and the air is compressed by rotating the two gate rotors 11 by driving the main screw 12.
  • This air end is the same as or similar to that used in the screw compressor, and a detailed description thereof will be omitted.
  • the synchronous motor 20 is provided as a means for driving the air end 10.
  • the synchronous motor 20 is installed on the rotor 21 and the outside of the rotor to generate magnetic force, thereby rotating the air.
  • the drive motor 20 is composed of a stator 22 for rotating electrons and a stator coil 23 for magnetizing the stator by the power supplied to the stator.
  • Such a synchronous motor is also similar to that of a conventionally used synchronous motor, and a description thereof will be omitted.
  • a shaft hole 21h is formed in the center of the rotor 21 in the axial direction, and the rotary shaft 12s penetrates through the shaft hole 21h. ) Is installed.
  • the rotary shaft 12s rotates, the main screw 12 rotates by the rotation of the rotary shaft, and the rotary shaft 12s directly rotates without using other connecting means.
  • the rotational force of the synchronous motor can be transmitted to the main screw 12 more accurately, and by not using other connecting means, the overall structure of the screw compressor can be simplified, and the size can be reduced to facilitate handling. It is.
  • the rotating shaft 12s installed in the main screw 12 extends through the rotor 21 to the lower end of the synchronous motor, and at this end is cooled.
  • the fan 24 is installed to cool the heat generated when the synchronous motor is driven.
  • a cover flange 30 is further installed between the air end 10 and the driving motor 20 to cover and protect the rotating shaft 12s.
  • the air flange 10 and the drive motor 20 can be directly connected without installing the cover flange 30, but it is difficult to combine the air end 10 and the drive motor 20 having different structures. Therefore, the cover flange was installed to facilitate the coupling between the two.
  • the bearing 40 was provided in the part which opposes the said cover flange 30 of the middle of the rotating shaft 12s. That is, the bearing 40 is further provided at both ends of the rotor 12s of the rotary shaft 12s penetrating the shaft hole 21h of the rotor of the synchronous motor, so that the rotary shaft can rotate without shaking, and penetrates the side wall outside the bearing.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The present invention relates to a screw compressor and, specifically, to a screw compressor integrated with a synchronous motor and having a simple structure by not including a coupling and a bearing, and comprising: an air end including two gate rotors, and a main screw rotating the gate rotors and having a rotary shaft provided to extend; and a synchronous motor comprising a rotor having a shaft hole through which the rotary shaft passes, a stator provided on the outer side of the rotor so as to generate magnetic force, thereby rotating the rotor, and stator coils provided at the stator so as to magnetize the stator by supplied electric power, wherein the rotary shaft is coupled by directly passing through the shaft hole of the rotor, such that the rotating power of the rotor is directly transmitted to the rotary shaft.

Description

동기모터 일체형 스크류 압축기Synchronous Motor Integral Screw Compressor
본 발명은 스크류 압축기에 관한 것으로서, 상세하게는 커플링과 베어링이 없어 구조가 단순화된 동기모터 일체형 스크류 압축기에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw compressor, and more particularly, to a synchronous motor-integrated screw compressor having no coupling and bearings, which has a simplified structure.
통상적으로 압축기는 기체를 압축하여 기계적 에너지를 발생시키는 수단으로, 왕복동식, 스크류식, 터보식 등이 있다.Typically, a compressor is a means for generating mechanical energy by compressing gas, and there are reciprocating type, screw type, turbo type, and the like.
이러한 압축기들 중 스크류형 공기 압축기는 내부에 로터(rotor)가 내장된 에어앤드(air end)와 에어앤드에 구비된 로터를 회전시키는 모터(motor)로 이루어지고, 모터의 회전축의 동력을 로터에 전달하기 위한 동력 전달 수단을 구비하고 있다.Among these compressors, a screw type air compressor is composed of an air end with a rotor built therein and a motor for rotating the rotor provided in the air end, and the power of the rotating shaft of the motor is applied to the rotor. A power transmission means for transmitting is provided.
이러한 스크류 압축기와 관련된 기술로는 특허문헌 1 내지 2를 비롯하여 다양한 기술이 있으며, 이 중 특허문헌 1은 케이스의 내부 바닥면 일측에 수직프레임이 수직으로 고정 설치되고, 수직프레임의 상측에는 받침플레이트가 지지 설치되며, 수직프레임의 하측에는 동력을 발생시키는 구동모터가 지지 결합되고, 받침플레이트의 상면에는 에어엔드가 고정 설치되며, 수직프레임을 지난 구동모터의 구동축과 에어엔드의 로우터샤프트에는 풀리가 고정 결합되고, 풀리는 밸트에 의해 연동되도록 결합되어, 상기 구동모터의 동력에 의해 에어엔드의 로우터가 회전되면서 외기를 흡입하여 압축시키도록 이루어진 통상의 스크류형 공기 압축기에 있어서, 받침플레이트의 일측은 회동지지수단에 의해 수직프레임에 회동 가능하게 지지 결합되고, 받침플레이트의 타측 하부에 위치한 수직프레임에는 지지브라켓이 고정 결합되며, 지지브라켓에는 지지포스트가 고정 결합되고, 지지포스트에는 받침 플레이트의 타측 저면을 밀면서 받치는 탄성스프링이 탄지되어, 탄성스프링에 의해 받침플레이트가 회동되면서 구동모터의 구동축 및 에어엔드의 로우터샤프트에 고정결합된 풀리를 연결하고 있는 밸트의 장력이 지속적으로 팽팽하게 유지될 수 있도록 구성된 스크류형 공기 압축기에 관한 것이고,Techniques related to such a screw compressor include a variety of technologies, including Patent Documents 1 to 2, of which Patent Document 1 is a vertical frame is fixed vertically installed on one side of the inner bottom surface of the case, the support plate on the upper side of the vertical frame Supported installation, the drive motor for generating power is supported and coupled to the lower side of the vertical frame, the air end is fixedly installed on the upper surface of the support plate, the pulley is fixedly coupled to the drive shaft and the rotor shaft of the air end after the vertical frame In the conventional screw-type air compressor, the pulley is coupled so as to be interlocked by a belt, the rotor of the air end is rotated by the power of the drive motor to compress and suck the outside air, wherein one side of the support plate is rotated by the support means. Supported pivotally on the vertical frame, support plate The support bracket is fixedly coupled to the vertical frame located on the other side lower part of the support, and the support post is fixedly coupled to the support bracket, and the support spring is supported by pushing the bottom of the other side of the support plate, and the support plate is supported by the elastic spring. It relates to a screw-type air compressor which is configured to maintain the tension of the belt which is connected to the drive shaft of the drive motor and the pulley fixedly coupled to the rotor shaft of the air end while rotating,
특허문헌 2는 외주면에 나선형의 돌출부가 형성됨과 아울러 구동축이 결합된 숫로터; 숫로터의 일측에 설치되고 외주면에는 돌출부가 삽입되면서 회전하도록 돌출부와 대응하는 나선형의 홈부가 형성됨과 아울러 종동축이 결합된 암로터; 숫로터와 암로터가 내부에 회전가능하게 설치되되 숫로터의 둘레에는 돌출부에 의해 복수개로 구획된 공기 압축 또는 팽창 공간을 형성함과 아울러 입,출구덕트가 구비된 케이싱; 케이싱의 양단부를 밀폐함과 아울러 구동축과 종동축을 회전가능하게 지지하는 제 1,2 엔드커버; 숫로터와 암로터가 동시에 회전할 수 있도록 구동축과 종동축에 각각 형성되되 제 2 엔드커버의 외측에서 서로 맞물리게 설치된 구동기어 및 종동기어; 구동기어 및 종동기어를 감싸도록 제 2 엔드커버의 일측에 설치되는 기어박스; 기어박스측에서 발생하는 열이 케이싱내의 공기측으로 전달되는 것을 차단하는 열차단수단을 포함하여 이루어진 것이다.Patent document 2 is a male rotor in which a helical protrusion is formed on the outer circumferential surface and a drive shaft is coupled; A female rotor installed at one side of the male rotor and having a helical groove corresponding to the protrusion to rotate while the protrusion is inserted into the outer circumferential surface thereof; A male rotor and a female rotor rotatably installed therein, and a casing having an inlet and an outlet duct as well as forming a plurality of air compression or expansion spaces partitioned by protrusions around the male rotor; First and second end covers for sealing both ends of the casing and rotatably supporting the drive shaft and the driven shaft; A driving gear and a driven gear which are respectively formed on the driving shaft and the driven shaft so that the male rotor and the female rotor can rotate at the same time and are engaged with each other on the outside of the second end cover; A gear box installed at one side of the second end cover to surround the drive gear and the driven gear; It comprises a heat shield means for blocking the heat generated from the gearbox side to be transferred to the air side in the casing.
이러한 통상의 스크류 압축기들은 상기한 바와 같이 모터의 동력을 스크류 또는 로터에 전달하기 위해 풀리와 벨트, 또는 체인과 스프로킷, 또는 커플러와 베어링 등을 사용함으로써 전체 구조가 복잡해지는 문제가 있다.These conventional screw compressors have a problem in that the overall structure is complicated by using pulleys and belts, chains and sprockets, couplers and bearings, etc. to transfer motor power to the screw or rotor as described above.
더욱이, 이렇게 복잡한 동력 전달구조를 가질 경우, 이들 동력전달 수단이 고장을 일으켜 충분한 동력이 전달되지 못하여 에너지 대비 공기 압축률이 떨어지는 문제가 있다.Moreover, in the case of having such a complex power transmission structure, these power transmission means have a problem that the sufficient power is not transmitted and the air compression ratio is low compared to the energy.
특히, 유도모터를 사용하여 구성할 경우 유도모터와 에어앤드의 결합을 위해 벨하우징과 축 커플러를 이용함으로써 이들이 차지하는 공간이 많아 전체 부피가 커짐으로써 취급이 어렵고, 유도모터의 회전축과 에어앤드의 회전축을 연결이 정확하게 이루어지지 않을 경우 진동이 발생하는 등의 문제가 있었다.In particular, when the induction motor is used, the bell housing and the shaft coupler are used for the combination of the induction motor and the air end, and thus the space occupied by them is large, making it difficult to handle by increasing the total volume.The rotation axis of the induction motor and the rotation axis of the air end If the connection is not made correctly there was a problem such as vibration occurs.
본 발명은 상기와 같은 문제점을 해소하기 위해 개발된 것으로, 구조가 단순하여 고장 발생 원인이 줄고, 크기가 축소되어 취급이 용이한 동기모터 일체형 스크류 압축기를 제공하는 것을 목적으로 한다.The present invention was developed to solve the above problems, an object of the present invention is to provide a synchronous motor-integrated screw compressor that is simple in structure and causes a breakdown, and is reduced in size and easy to handle.
특히 본 발명은 동기모터를 이용하여 구성하되, 동기모터의 회전자에 에어앤드의 회전축을 직접 결합하여 축이 일체화됨에 따라 축 결합의 부정확함에 의해 동력전달이 충분히 이루어지지 않거나 진동이 발생하는 것을 줄일 수 있음은 물론, 자재비를 절감할 수 있는 동기모터 일체형 스크류 압축기를 제공하는 것을 목적으로 한다.In particular, the present invention is configured using a synchronous motor, but as the shaft is integrated by directly coupling the rotational axis of the air end to the rotor of the synchronous motor, it is possible to reduce the occurrence of insufficient power transmission or vibration caused by the inaccurate shaft coupling. It is possible to, of course, to provide a synchronous motor-integrated screw compressor that can reduce material costs.
상기한 바와 같은 목적을 달성하기 위한 동기모터 일체형 스크류 압축기는 두 개의 게이트로터, 상기 게이트로터를 회전시키고 회전축이 연장 설치된 메인스크류를 포함하는 에어엔드; 상기 회전축이 관통하는 축공이 형성된 회전자와, 상기 회전자의 외부에 설치되어 자력을 발생시켜 상기 회전자를 회전시키는 고정자와, 상기 고정자에 설치되어 공급된 전원에 의해 상기 고정자를 자화시키는 고정자코일로 이루어진 동기모터로 이루어지되, 상기 회전축을 회전자의 축공에 직접 관통시켜 결합하여 회전자의 회전력이 회전축에 직접 전달되게 한 것을 특징으로 한다.Synchronous motor-integrated screw compressor for achieving the above object is an air end comprising two gate rotor, the main screw to rotate the gate rotor and the rotation shaft is extended; A stator coil having a shaft hole through which the rotating shaft penetrates, a stator installed outside the rotor to rotate the rotor by generating a magnetic force, and a stator coil magnetizing the stator by power supplied to the stator. Consisting of a synchronous motor made of, characterized in that the rotating shaft is coupled directly through the shaft hole of the rotor to be coupled directly to the rotating shaft of the rotor.
상기 에어앤드와 동기모터 사이에는 회전축을 덮어 보호하기 위한 커버플랜지가 더 설치될 수 있다.A cover flange for covering and protecting the rotating shaft may be further installed between the air end and the synchronous motor.
상술한 바와 같이, 본 발명에 따른 동기모터 일체형 스크류 압축기는 구조가 단순하여 고장 발생 원인이 줄고, 크기가 축소되어 취급을 용이하게 할수 있는 효과가 있다.As described above, the synchronous motor-integrated screw compressor according to the present invention has a simple structure to reduce the cause of failure, the size is reduced can be easily handled.
또한, 본 발명은 동기모터의 회전자에 에어앤드의 회전축을 직접 결합하여 축이 일체화됨에 따라, 축 결합의 부정확함에 의해 동력전달이 충분히 이루어지지 않거나 진동이 발생하는 것을 줄일 수 있음은 물론, 자재비를 절감할 수 있는 효과가 있다.In addition, according to the present invention, as the shaft is integrated by directly coupling the rotary shaft of the air end to the rotor of the synchronous motor, it is possible to reduce the occurrence of insufficient power transmission or vibration due to the inaccuracy of the shaft coupling. There is an effect to reduce the.
또한, 모터와 에어앤드를 결합하기 위한 결합수단이 절감되어 제조단가를 낮출 수 있는 효과도 있는 것이다.In addition, the coupling means for coupling the motor and the air end is reduced, there is also an effect that can lower the manufacturing cost.
도 1은 본 발명에 따른 동기모터 일체형 스크류 압축기의 일예의 단면도,1 is a cross-sectional view of an example of a synchronous motor-integrated screw compressor according to the present invention,
도 2는 본 발명에 따른 동기모터 일체형 스크류 압축기의 일예의 일부를 절Figure 2 shows a part of an example of a synchronous motor-integrated screw compressor according to the present invention
개하여 도시한 사시도, 및A perspective view showing a dog, and
도 3은 본 발명에 따른 동기모터 일체형 스크류 압축기의 일예를 분해하여 도시한 분해 사시도이다.3 is an exploded perspective view illustrating an example of the synchronous motor-integrated screw compressor according to the present invention.
본 발명은 다양한 변경을 가할 수 있고 여러 가지 실시예를 가질 수 있는 바, 특정 실시예들을 도면에 예시하고 상세한 설명에 상세하게 설명하고자 한다. 그러나 이는 본 발명을 특정한 실시 형태에 대해 한정하려는 것이 아니며, 본 발명의 사상 및 기술 범위에 포함되는 모든 변경, 균등물 내지 대체물을 포함하는 것으로 이해되어야 한다.As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.
각 도면을 설명하면서 유사한 참조부호를 유사한 구성요소에 대해 사용하였다. 본 발명을 설명함에 있어서 관련된 공지 기술에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다. In describing the drawings, similar reference numerals are used for similar elements. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.
이하, 본 발명에 따른 동기모터 일체형 스크류 압축기의 일 실시예를 첨부된 도면을 참조하여 상세하게 설명한다.Hereinafter, an embodiment of a synchronous motor-integrated screw compressor according to the present invention will be described in detail with reference to the accompanying drawings.
본 발명에 따른 동기모터 일체형 스크류 압축기는 도 1내지 도 3에 도시한 바와 같이, 에어앤드(10)의 회전축(12s)을 동기모터(20)의 회전자(21)의 축공(21h)에 직접 결합하여 구조를 단순화시킨 것이 특징이다.In the synchronous motor-integrated screw compressor according to the present invention, as shown in FIGS. 1 to 3, the rotary shaft 12s of the air end 10 is directly connected to the shaft hole 21h of the rotor 21 of the synchronous motor 20. Combined, the structure is simplified.
이러한 본 발명의 스크류 압축기는 두 개의 게이트로터(11)와, 상기 게이트로터를 회전시키고 회전축(12s)이 연장 설치된 메인스크류(12)를 포함하는 에어엔드(10)를 구비하고 있다.The screw compressor of the present invention includes two gate rotors 11 and an air end 10 including a main screw 12 in which the gate rotor is rotated and the rotating shaft 12s is extended.
상기 에어앤드(10)는 실질적으로 공기를 압축하는 부분으로, 메인스크류(12)의 구동에 의해 두 개의 게이트로터(11)를 회전시킴에 의해 공기가 압축된다. 이러한 에어앤드는 스크류 압축기에 사용되는 것과 동일 또는 유사한 것으로 이에 대한 상세한 설명은 생략한다.The air end 10 substantially compresses air, and the air is compressed by rotating the two gate rotors 11 by driving the main screw 12. This air end is the same as or similar to that used in the screw compressor, and a detailed description thereof will be omitted.
상기 에어앤드(10)를 구동시키기 위한 수단으로 동기모터(20)를 구비하고 있으며, 이 동기모터(20)는 회전자(21)와, 상기 회전자의 외부에 설치되어 자력을 발생시켜 상기 회전자를 회전시키는 고정자(22)와, 상기 고정자에 설치되어 공급된 전원에 의해 상기 고정자를 자화시키는 고정자코일(23)로 이루어진 구동모터(20)로 이루어진다.The synchronous motor 20 is provided as a means for driving the air end 10. The synchronous motor 20 is installed on the rotor 21 and the outside of the rotor to generate magnetic force, thereby rotating the air. The drive motor 20 is composed of a stator 22 for rotating electrons and a stator coil 23 for magnetizing the stator by the power supplied to the stator.
이러한 동기모터 또한 통상적으로 사용되는 동기모터와 동일 유사한 것으로 그 구체적인 구조에 대한 설명은 생략한다.Such a synchronous motor is also similar to that of a conventionally used synchronous motor, and a description thereof will be omitted.
다만, 본 발명의 동기모터 일체형 스크류 압축기를 구성하기 위해, 상기 회전자(21)의 중앙에는 축방향으로 길게 축공(21h)이 관통 형성되어 있고, 이 축공(21h)을 관통하여 상기 회전축(12s)이 설치되어 있다.However, in order to configure the synchronous motor-integrated screw compressor of the present invention, a shaft hole 21h is formed in the center of the rotor 21 in the axial direction, and the rotary shaft 12s penetrates through the shaft hole 21h. ) Is installed.
이에 따라 회전자(21)가 회전하면 회전축(12s)이 회전하고, 회전축의 회전에 의해 상기 메인스크류(12)가 회전하며, 회전자의 회전력이 다른 연결수단을 이용하지 않고 직접 회전축(12s)에 전달됨으로써, 동기모터의 회전력이 보다 정확하게 메인스크류(12)에 전달될 수 있고, 다른 연결수단을 사용하지 않음으로, 스크류 압축기의 전체 구조가 단순해지고, 크기가 축소되어 취급을 용이하게 할 수 있는 것이다.Accordingly, when the rotor 21 rotates, the rotary shaft 12s rotates, the main screw 12 rotates by the rotation of the rotary shaft, and the rotary shaft 12s directly rotates without using other connecting means. By being transmitted to, the rotational force of the synchronous motor can be transmitted to the main screw 12 more accurately, and by not using other connecting means, the overall structure of the screw compressor can be simplified, and the size can be reduced to facilitate handling. It is.
이러한 본 발명에 따른 스크류 압축기는 도 1에 도시한 바와 같이, 상기 메인스크류(12)에 설치된 회전축(12s)이 회전자(21)를 관통하여 동기모터의 하단까지 연장되어 있고, 이 단부에는 냉각팬(24)를 설치하여 동기모터의 구동시 발생된 열을 냉각시킬 수 있게 하였다.In the screw compressor according to the present invention, as shown in FIG. 1, the rotating shaft 12s installed in the main screw 12 extends through the rotor 21 to the lower end of the synchronous motor, and at this end is cooled. The fan 24 is installed to cool the heat generated when the synchronous motor is driven.
또한, 상기 에어앤드(10)와 구동모터(20) 사이에는 회전축(12s)를 덮어 보호하기 위한 커버플랜지(30)를 더 설치하였다.In addition, a cover flange 30 is further installed between the air end 10 and the driving motor 20 to cover and protect the rotating shaft 12s.
물론, 커버플랜지(30)를 설치하지 않고, 에어앤드(10)와 구동모터(20)를 직접 연결할 수 있으나, 서로 구조가 다른 에어앤드(10)와 구동모터(20)를 결합하기에 어려움이 있으므로 상기 커버플랜지를 설치하여 둘 사이의 결합을 쉽게 할 수 있게 하였다.Of course, the air flange 10 and the drive motor 20 can be directly connected without installing the cover flange 30, but it is difficult to combine the air end 10 and the drive motor 20 having different structures. Therefore, the cover flange was installed to facilitate the coupling between the two.
또한, 회전축(12s)의 중간의 상기 커버플랜지(30)와 대향되는 부분에는 베어링(40)를 설치하였다. 즉, 상기 동기모터의 회전자의 축공(21h)을 관통하는 회전축(12s)의 회전자 양 단부에는 베어링(40)을 더 설치하여 회전축이 흔들리지 않고 회전할 수 있게 하였으며, 베어링 외부의 측벽을 관통하여 급유홀(40h)을In addition, the bearing 40 was provided in the part which opposes the said cover flange 30 of the middle of the rotating shaft 12s. That is, the bearing 40 is further provided at both ends of the rotor 12s of the rotary shaft 12s penetrating the shaft hole 21h of the rotor of the synchronous motor, so that the rotary shaft can rotate without shaking, and penetrates the side wall outside the bearing. The oil supply hole (40h)
형성하여 윤활유를 급유할 수 있게 하였다.It was formed to enable lubricating oil.
[부호의 설명][Description of the code]
10: 에어앤드10: Air End
11: 게이트로터11: gate rotor
12: 메인스크류12: mainscrew
12s: 회전축12s: axis of rotation
20: 동기모터20: Synchronous motor
21: 회전자 21h: 축공21: rotor 21h: shaft
22: 고정자22: stator
23: 고정자코일23: stator coil
24: 냉각팬24: cooling fan
30: 커버플랜지30: cover flange
40: 베어링40: bearing
40h: 급유홀40h: oil supply hole
무radish

Claims (3)

  1. 두 개의 게이트로터(11)와, 상기 게이트로터를 회전시키고 회전축(12s)이 연장 설치된 메인스크류(12)를 포함하는 에어엔드(10);An air end 10 including two gate rotors 11 and a main screw 12 which rotates the gate rotors and has a rotating shaft 12s installed therein;
    상기 회전축(12s)이 관통하는 축공(21h)이 형성된 회전자(21)와, 상기 회전자의 외부에 설치되어 자력을 발생시켜 상기 회전자를 회전시키는 고정자(22)와, 상기 고정자에 설치되어 공급된 전원에 의해 상기 고정자를 자화시키는 고정자코일(23)로 이루어진 동기모터(20)로 이루어지되,A rotor 21 having a shaft hole 21h through which the rotating shaft 12s penetrates, a stator 22 installed outside the rotor to generate a magnetic force to rotate the rotor, and installed in the stator. It consists of a synchronous motor 20 made of a stator coil 23 for magnetizing the stator by the supplied power,
    상기 회전축(12s)을 회전자의 축공(21h)에 직접 관통시켜 결합하여 회전자의회전력이 회전축에 직접 전달되게 한 것을 특징으로 하는 동기모터 일체형 스크류 압축기.And the rotating shaft (12s) is directly penetrated through the shaft hole (21h) of the rotor so that the rotational force of the rotor is directly transmitted to the rotating shaft.
  2. 제1항에 있어서,The method of claim 1,
    상기 에어앤드와 동기모터 사이에는 회전축(12s)를 덮어 보호하기 위한 커버플랜지(30)가 더 설치된 것을 특징으로 하는 동기모터 일체형 스크류 압축기.A synchronous motor-integrated screw compressor, characterized in that the cover flange 30 is further provided between the air end and the synchronous motor to cover and protect the rotating shaft (12s).
  3. 제1항에 있어서,The method of claim 1,
    상기 동기모터의 회전자의 축공(21h)을 관통하는 회전축(12s)의 회전자 양단부에는 베어링(40)이 더 설치되고, 베어링 외부의 측벽을 관통하여 급유홀(40h)이 형성되어 윤활유를 급유할 수 있게 한 것을 특징으로 하는 동기모터 일체형 스크류 압축기.Bearings 40 are further provided at both ends of the rotor 12s of the rotating shaft 12s passing through the shaft hole 21h of the rotor of the synchronous motor, and an oil supply hole 40h is formed through the side wall of the bearing to supply lubricant oil. A synchronous motor-integrated screw compressor, characterized in that possible.
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* Cited by examiner, † Cited by third party
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CN106837798A (en) * 2017-03-20 2017-06-13 好米动力设备有限公司 A kind of split compound spider and its preparation technology for single screw compressor
CN106837798B (en) * 2017-03-20 2020-09-01 好米动力设备有限公司 Split composite star wheel for single-screw compressor and preparation process of split composite star wheel

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