KR20070062801A - Single phase induction motor for comperssor - Google Patents

Single phase induction motor for comperssor Download PDF

Info

Publication number
KR20070062801A
KR20070062801A KR1020050122615A KR20050122615A KR20070062801A KR 20070062801 A KR20070062801 A KR 20070062801A KR 1020050122615 A KR1020050122615 A KR 1020050122615A KR 20050122615 A KR20050122615 A KR 20050122615A KR 20070062801 A KR20070062801 A KR 20070062801A
Authority
KR
South Korea
Prior art keywords
induction motor
phase induction
stator
hollow portion
inner diameter
Prior art date
Application number
KR1020050122615A
Other languages
Korean (ko)
Inventor
김종건
Original Assignee
삼성광주전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 삼성광주전자 주식회사 filed Critical 삼성광주전자 주식회사
Priority to KR1020050122615A priority Critical patent/KR20070062801A/en
Publication of KR20070062801A publication Critical patent/KR20070062801A/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/04—Asynchronous induction motors for single phase current
    • H02K17/08—Motors with auxiliary phase obtained by externally fed auxiliary windings, e.g. capacitor motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121—Casings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00—Working fluid
    • F05B2210/10—Kind or type
    • F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2260/00—Function
    • F05B2260/60—Fluid transfer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A single phase induction motor for a compressor is provided to increase the operating efficiency by preventing and blocking the leakage of magnetic flux along the direction of a rotating shaft. A single phase induction motor for a compressor includes a rotator and a stator which are formed by stacking a plurality of lamination sheets. The rotator includes a rotator core(61). The rotator core is installed in the stator core(51) to be rotatable. The stator core includes a stator slot(51a) with a wiring coil wired around while separated with a prescribed distance along the circumference in the stator core. A rotator slot(61a) is formed at outer diameter of the rotator core for inserting a magnetic resistor like aluminum. A rotating shaft(70) is included at an inner diameter of the rotator core.

Description

압축기용 단상유도전동기{Single Phase induction Motor for Comperssor}Single phase induction motor for compressors

도 1은 종래 압축기의 단상유도전동기에 있어서 고정자코어와 회전자코어의 구조를 도시한 평단면도로, 자속의 흐름을 표시한 것이다. 1 is a planar cross-sectional view showing the structure of a stator core and a rotor core in a single-phase induction motor of a conventional compressor, showing the flow of magnetic flux.

도 2는 본 발명의 바람직한 일 실시예 따른 단상유도전동기가 적용된 압축기의 전체적인 구조를 대략적으로 도시한 단면도이다. 2 is a cross-sectional view schematically showing the overall structure of a compressor to which a single-phase induction motor according to an embodiment of the present invention is applied.

도 3은 본 발명의 바람직한 일 실시예에 따른 단상유도전동기에 있어서 고정자코어와 회전자코어의 구조를 도시한 평단면도로, 자속의 흐름을 표시한 것이다. 3 is a cross-sectional view showing the structure of the stator core and the rotor core in the single-phase induction motor according to an embodiment of the present invention, showing the flow of magnetic flux.

도 4의 a와 b는 본 발명에 따른 단상유도전동기에 있어서, 다른 실시예에 따른 회전자코어의 구조를 도시한 평단면도이다.4 is a cross-sectional view showing the structure of the rotor core according to another embodiment in the single-phase induction motor according to the present invention.

* 도면의 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

20: 단상유도전동기 50: 고정자20: single phase induction motor 50: stator

51: 고정자코어 51a: 고정자슬롯51: Stator core 51a: Stator slot

60: 회전자 61a: 회전자슬롯60: rotor 61a: rotor slot

61c,61d,61e: 중공부 70: 회전축61c, 61d, 61e: hollow part 70: rotating shaft

본 발명은 압축기에 관한 것으로, 더욱 상세하게는 냉매 압축작용에 따른 구동력을 제공하는 구동유닛이 단상유도전동기로 마련된 압축기에 관한 것이다. The present invention relates to a compressor, and more particularly to a compressor provided with a single-phase induction motor drive unit for providing a driving force according to the refrigerant compression action.

일반적으로 압축기는 냉장고와 공기조화기 등의 냉동사이클에 채용되어 냉매를 압축하도록 마련된 것으로, 밀폐용기 내부에 냉매의 압축동력을 제공하는 구동유닛과, 구동유닛으로부터 동력을 전달받아 냉매의 압축작용을 수행하도록 마련된 압축유닛을 구비한다.In general, a compressor is employed in a refrigerating cycle such as a refrigerator and an air conditioner to compress a refrigerant. The compressor provides a compression power of the refrigerant in a sealed container, and receives a power from the driving unit to compress the refrigerant. It is provided with a compression unit provided to perform.

상기 구동유닛으로는 통상 가격이 저렴한 단상유도전동기가 주로 채용되고 있으며, 이러한 단상유도전동기는 외측에 고정되는 고정자와, 고정자 내측에 고정자와의 전기적인 상호 작용으로 회전하도록 마련된 회전자를 구비하고, 회전자코어의 내경에는 회전자와 함께 회전하도록 회전축이 압입 된다.The single-phase induction motor is generally employed as the drive unit, and the single-phase induction motor has a stator fixed to the outside and a rotor provided to rotate by electrical interaction with the stator inside the stator. A rotating shaft is pressed into the inner diameter of the rotor core to rotate together with the rotor.

그리고 상기 압축유닛은 통상 내부공간이 압축실을 형성하는 실린더와, 압축실 내부에서 직선왕복운동하는 피스톤이 구비된다. The compression unit is usually provided with a cylinder in which the internal space forms a compression chamber, and a piston reciprocating linearly in the compression chamber.

따라서 고정자와 회전자와의 전기적인 상호 작용으로 회전자와 함께 회전축이 회전하게 되면, 회전축의 일단에 형성된 편심부에 커넥팅로드를 통해 연결된 상기 피스톤이 압축실 내부에서 직선왕복운동하며 냉매의 압축작용을 수행하게 된다. Therefore, when the rotating shaft rotates together with the rotor by the electrical interaction between the stator and the rotor, the piston connected via a connecting rod to an eccentric portion formed at one end of the rotating shaft linearly reciprocates in the compression chamber and compresses the refrigerant. Will be performed.

도 1에는 종래 이러한 밀폐용 압축기에 채용되는 단상유도전동기에 있어서, 고정자코어(1)와 회전자코어(2)의 구조가 도시된다. 1 shows a structure of a stator core 1 and a rotor core 2 in a single phase induction motor conventionally employed in such a hermetic compressor.

도 1에 도시된 바와 같이, 고정자코어(1)의 내경 측에는 권선코일이 권취되도록 형성된 고정자슬롯(1a)이 원주방향을 따라 일정간격 상호 이격되도록 형성되고, 회전자코어(2)의 외경 측에는 알루미늄과 같은 자기저항체가 삽입되도록 회전 자슬롯(2a)이 마련된다. As shown in FIG. 1, the stator slots 1a formed on the inner diameter side of the stator core 1 are wound so as to be spaced apart from each other at regular intervals along the circumferential direction, and the outer diameter side of the rotor core 2 is made of aluminum. Rotating magnetic slot 2a is provided to insert a magneto-resistive body such as this.

따라서 고정자의 권선코일에 교류전류가 인가되면 교류전류에 의해 발생되는 회전자계와 이러한 회전자계 의한 자속밀도의 변화에 따라 회전자에서 발생하는 유도기전력과의 상호작용에 토오크가 발생되고, 이러한 토오크에 의해 회전자는 회전자코어(2)의 내경에 압입된 회전축(3)과 함께 회전하게 된다.Therefore, when an alternating current is applied to the winding coil of the stator, a torque is generated in the interaction between the rotor magnetic field generated by the alternating current and the induced electromotive force generated by the rotor according to the change of magnetic flux density caused by the rotor magnetic field. As a result, the rotor rotates together with the rotating shaft 3 pressed into the inner diameter of the rotor core 2.

한편, 인가되는 교류전류에 의해 발생하는 회전자계는 여러 가지 요인에 의해 누설되게 되는데, 이러한 누설 자속의 대표적인 예로는 고정자에 형성된 자기 경로가 회전축을 통과하게 되는 경우를 들 수 있다. 즉, 이때는 자속이 회전축을 통과하면서 자속감쇠 현상이 증대됨에 따라 단상유도전동기의 구동효율이 저하되게 된다. On the other hand, the magnetic field generated by the applied alternating current is leaked by various factors, a typical example of such leakage magnetic flux is a case in which the magnetic path formed in the stator passes through the rotating shaft. That is, in this case, as the magnetic flux passes through the rotating shaft, the magnetic flux attenuation increases, thereby lowering the driving efficiency of the single-phase induction motor.

본 발명은 이와 같은 문제점을 해결하기 위한 것으로, 이러한 본 발명의 목적은 자속이 회전축 쪽으로 누설되는 것을 억제하여 구동효율이 향상되도록 마련된 압축기용 단상유도전동기를 제공하는 것이다.The present invention is to solve such a problem, it is an object of the present invention to provide a single-phase induction motor for a compressor provided to improve the driving efficiency by suppressing the leakage of magnetic flux toward the rotating shaft.

이러한 목적을 달성하기 위한 본 발명에 따른 압축기용 단상유도전동기는 내경 측에 복수개의 고정자슬롯이 원주방향을 따라 등간격 상호 이격되도록 마련된 고정자코어와, 상기 고정자의 내측에 회전가능하도록 설치되되 내경에 회전축이 삽입되고 외경 측에 복수개의 회전자슬롯이 원주방향을 따라 등간격 상호 이격되도록 마련된 회전자코어를 구비하고, 상기 회전자코어의 내경 측에는 상기 회전자코어를 길이방향으로 관통하는 복수개의 중공부가 상기 회전자코어의 내경을 감싸도록 마련된 것을 특징으로 한다. Compressor single-phase induction motor according to the present invention for achieving this object is a stator core and a plurality of stator slots are provided on the inner diameter side so as to be spaced apart from each other at equal intervals along the circumferential direction, rotatably installed inside the stator but inside A plurality of rotor cores having a rotor shaft inserted therein and having a plurality of rotor slots spaced at equal intervals along the circumferential direction on the outer diameter side, and a plurality of hollows penetrating the rotor core in the longitudinal direction on the inner diameter side of the rotor core; An additional portion is provided to surround the inner diameter of the rotor core.

그리고 상기 중공부는 홀형태로 형성되어 원주방향을 따라 등간격 상호 이격되도록 마련된 것을 특징으로 한다.And the hollow portion is formed in the shape of a hole is characterized in that it is provided to be spaced apart from each other at equal intervals in the circumferential direction.

또한 상기 중공부는 슬릿형태로 형성되어 원주방향을 따라 등간격 상호 이격되도록 마련된 것을 특징으로 한다. In addition, the hollow portion is formed in a slit shape, characterized in that provided to be spaced apart from each other at equal intervals in the circumferential direction.

또한 상기 중공부는 상기 회전자코어의 내경 쪽으로 오목한 곡선형 슬릿형태로 형성되되, 원주방향을 따라 상호 이격된 복수개로 마련되는 안쪽의 제1중공부와, 상기 제1관통부 바깥쪽에 원주방향을 따라 상호 이격된 복수개로 마련되는 제2중공부를 포함하고, 상기 제2중공부는 상호 인접한 상기 제1중공부 사이를 감싸도록 마련된 것을 특징으로 한다.In addition, the hollow portion is formed in a curved slit shape concave toward the inner diameter of the rotor core, the inner first hollow portion is provided in a plurality of spaced apart from each other along the circumferential direction, and the circumferential direction on the outside of the first through portion And a plurality of second hollow portions spaced apart from each other, wherein the second hollow portions are provided to surround the adjacent first hollow portions.

이하에서는 본 발명에 따른 바람직한 일 실시예를 첨부 도면을 참조하여 상세히 설명한다.Hereinafter, with reference to the accompanying drawings, a preferred embodiment according to the present invention will be described in detail.

본 발명의 바람직한 일 실시예에 따른 압축기는 도 1에 도시된 바와 같이 일측과 타측에 각각 냉매흡입관(11)과 냉매토출관(12)이 설치된 밀폐용기(10)를 통해 외관을 이루게 되며, 밀폐용기(10)의 내부에는 냉매의 압축동력을 제공하도록 마련된 단상유도전동기(20)와, 단상유도전동기(20)로부터 동력을 전달받아 냉매의 압축작용을 수행하는 압축유닛(30)이 마련된다. Compressor according to an embodiment of the present invention forms the appearance through the sealed container 10, the refrigerant suction pipe 11 and the refrigerant discharge pipe 12 is installed on one side and the other side, respectively, as shown in FIG. Inside the vessel 10 is provided with a single-phase induction motor 20 provided to provide the compression power of the refrigerant, and a compression unit 30 for receiving the power from the single-phase induction motor 20 to perform the compression action of the refrigerant.

단상유도전동기(20)와 압축유닛(30)은 프레임(40)을 통해 밀폐용기(10) 내부에 설치되는데, 먼저 단상유도전동기(20)는 프레임(40)의 상부 외곽 측에 고정되 는 고정자(50)와, 고정자(50)와의 전기적인 상호작용으로 회전하도록 마련된 회전자(60)와, 회전자(60)와 함께 회전하도록 회전자(60)에 압입되는 회전축(70)을 구비한다. 또 회전축(70)의 하단은 프레임(40) 하부로 연장되어 편심회전하는 편심축(71)을 형성하게 된다.  The single phase induction motor 20 and the compression unit 30 are installed inside the sealed container 10 through the frame 40. First, the single phase induction motor 20 is fixed to the upper outer side of the frame 40. 50, a rotor 60 provided to rotate in electrical interaction with the stator 50, and a rotation shaft 70 press-fitted to the rotor 60 to rotate together with the rotor 60. In addition, the lower end of the rotation shaft 70 extends to the lower portion of the frame 40 to form an eccentric shaft 71 for eccentric rotation.

압축유닛(30)은 내부공간의 압축실(31a)을 형성하도록 프레임(40)의 하부 일측에 마련된 실린더(31)와, 일단부가 상기 편심축(71)과 커넥팅로드(32)를 통해 연결되어 압축실(31a) 내부에서 직선왕복운동하도록 마련된 피스톤(33)과, 압축실(31a)을 밀폐시키도록 실린더(31) 일단에 결합되며 내부공간이 냉매흡입실(34a)과 냉매토출실(34b)로 구획되도록 마련된 실린더헤드(34)를 포함한다. The compression unit 30 is a cylinder 31 provided on one side of the lower portion of the frame 40 to form a compression chamber 31a of the inner space, one end is connected through the eccentric shaft 71 and the connecting rod 32 A piston 33 arranged to linearly reciprocate in the compression chamber 31a and a cylinder 31 are coupled to one end of the cylinder 31 to seal the compression chamber 31a, and an internal space of the refrigerant suction chamber 34a and the refrigerant discharge chamber 34b. It comprises a cylinder head 34 provided to be divided into a).

여기서 냉매흡입실(34a)은 상기 냉매흡입관(11)을 통해 밀폐용기(10) 내부로 유입된 냉매를 전달받아 압축실(31a)로 공급하고, 냉매토출실(34b)은 압축실(31a)에서 압축된 냉매를 전달받아 상기 냉매토출관(34b) 측으로 안내하며, 실린더(31)와 실린더헤드(34) 사이에는 냉매흡입실(34a)로부터 압축실(31a)로 흡입되거나 압축실(31a)로부터 냉매토출실(34b)로 토출되는 냉매의 흐름을 단속하는 밸브장치(35)가 개재된다.Here, the refrigerant suction chamber 34a receives the refrigerant introduced into the sealed container 10 through the refrigerant suction tube 11 and supplies the refrigerant to the compression chamber 31a, and the refrigerant discharge chamber 34b is the compression chamber 31a. Receives the compressed refrigerant from the guide to the refrigerant discharge pipe (34b) side, between the cylinder 31 and the cylinder head 34 is sucked into the compression chamber (31a) from the refrigerant suction chamber (34a) or the compression chamber (31a) The valve device 35 which intercepts the flow of the refrigerant | coolant discharged from the refrigerant | coolant discharge chamber 34b is interposed.

이러한 구성을 통해 고정자(50)와 회전자(60) 간의 전기적인 상호 작용으로 회전자(60)와 함께 회전축(70)이 회전하게 되면, 편심축(71)이 편심회전하면서 편심축(71)과 커넥팅로드(32)를 통해 연결된 피스톤(33)이 압축실(31a) 내부에서 직선왕복운동하며 압축실(31a) 내부와 외부 간에 압력차가 형성된다. 그러면 이러한 압력차에 의해 냉매흡입관(11)을 따라 밀폐용기(10) 내부로 유입된 냉매는 냉매흡 입실(34a)을 거쳐 압축실(31a)로 흡입되어 압축실(31a) 내부에서 압축되고, 압축실(31a)에서 압축된 냉매는 냉매토출실(34b)과 냉매토출관(12)을 따라 밀폐용기(10) 외부로 토출되고, 이러한 과정이 반복적으로 진행되며 압축기를 통한 냉매의 압축작용이 수행된다. When the rotating shaft 70 is rotated together with the rotor 60 by the electrical interaction between the stator 50 and the rotor 60 through this configuration, the eccentric shaft 71 while the eccentric shaft 71 rotates eccentrically And a piston 33 connected through the connecting rod 32 linearly reciprocate in the compression chamber 31a, and a pressure difference is formed between the inside and the outside of the compression chamber 31a. Then, the refrigerant introduced into the sealed container 10 along the refrigerant suction pipe 11 by this pressure difference is sucked into the compression chamber 31a through the refrigerant suction chamber 34a and compressed in the compression chamber 31a. The refrigerant compressed in the compression chamber 31a is discharged to the outside of the sealed container 10 along the refrigerant discharge chamber 34b and the refrigerant discharge tube 12, and this process is repeatedly performed. Is performed.

그리고 냉매의 압축동력을 제공하는 상기 단상유도전동기(20)의 구조를 구체적으로 살펴보자면, 도 3에 도시된 바와 같이, 상기 고정자(50)와 회전자(60)는 다수개의 라미네이션 시트가 적층 형성된 적층체로 이루어지는 고정자코어(51)와 회전자코어(61)를 각각 구비한다. In addition, the structure of the single-phase induction motor 20 that provides the compression power of the refrigerant in detail, as shown in FIG. 3, the stator 50 and the rotor 60 are formed by laminating a plurality of lamination sheets. The stator core 51 and the rotor core 61 which consist of laminated bodies are provided, respectively.

회전자코어(61)는 고정자코어(51)의 내경에 회전 가능하도록 설치되고, 고정자코어(51)의 내경 측에는 권선코일이 권취되도록 형성된 고정자슬롯(51a)이 원주방향을 따라 일정간격 상호 이격되도록 형성된다. 또 회전자코어(61)의 외경 측에는 알루미늄과 같은 자기저항체가 삽입되도록 회전자슬롯(61a)이 마련되며, 상기 회전축(70)은 회전자코어(61)의 내경에 압입된다.The rotor core 61 is installed to be rotatable in the inner diameter of the stator core 51, so that the stator slots 51a formed so that the winding coil is wound on the inner diameter side of the stator core 51 are spaced apart from each other by a predetermined distance along the circumferential direction. Is formed. In addition, a rotor slot 61a is provided on the outer diameter side of the rotor core 61 so that a magnetoresistive element such as aluminum is inserted, and the rotation shaft 70 is press-fitted into the inner diameter of the rotor core 61.

참고로 미설명부호 51b와 61b는 각각 고정자코어(51)의 외경 측과 회전자코어(61)의 외경 측에 각각 형성되는 것으로, 이중 51b은 고정자코어(51)를 형성하는 라미네이션시트를 서로 결합시키는 리벳이 체결되도록 형성된 제1리벳체결공이고, 또 다른 미설명부호 61b는 회전자코어(61)를 형성하는 라미네이션시트를 서로 결합시키는 리벳이 체결되도록 형성된 제2리벳체결공이다. For reference, reference numerals 51b and 61b are formed on the outer diameter side of the stator core 51 and the outer diameter side of the rotor core 61, respectively, of which 51b couples the lamination sheets forming the stator core 51 to each other. The first rivet fastening hole is formed so that the rivet is fastened, another reference numeral 61b is a second rivet fastening hole formed so as to fasten the rivets for bonding the lamination sheet forming the rotor core 61 to each other.

따라서 이러한 구조를 갖는 단상유도전동기(20)는 고정자(50)의 권선코일에 교류전류가 인가됨에 따라 교류전류에 의해 발생되는 회전자계와 이러한 회전자계 의한 자속밀도의 변화에 따라 회전자(60)에서 발생하는 유도기전력과의 상호작용에 토오크가 발생되고, 회전축(70)과 회전자(60)는 이러한 토오크에 의해 함께 회전하게 된다.Therefore, the single-phase induction motor 20 having such a structure has a rotor 60 according to the change of the magnetic field generated by the alternating current and the magnetic flux density by the alternating current as the alternating current is applied to the winding coil of the stator 50. Torque is generated in the interaction with the induced electromotive force generated in the, and the rotating shaft 70 and the rotor 60 is rotated together by this torque.

한편, 본 실시예에 따른 압축기용 단상유도전동기에 있어서, 상기 회전자코어(61)의 내경 측에는 상기 회전자코어(51)를 길이방향으로 관통하는 복수개의 중공부(61c)가 상기 회전자코어(61)의 내경을 감싸도록 마련된다.On the other hand, in the single-phase induction motor for a compressor according to the present embodiment, a plurality of hollow portions 61c penetrating the rotor core 51 in the longitudinal direction at the inner diameter side of the rotor core 61 is the rotor core. It is provided to surround the inner diameter of 61.

이러한 중공부(61c)는 회전축(70) 쪽으로 자속이 통과하려는 것을 차단하여 회전축(70) 쪽으로 자속이 누설되는 것을 억제함으로써 단상유도전동기(20)의 구동 효율을 향상시키기 위한 것이다.The hollow portion 61c is to improve the driving efficiency of the single-phase induction motor 20 by blocking the magnetic flux from passing toward the rotation shaft 70 and preventing the magnetic flux from leaking toward the rotation shaft 70.

즉, 고정자(50)에 형성된 자기 경로가 회전축(70)을 통과하게 되는 경우에는 회전축(70)을 통과하면서 자속감쇠 현상이 커지게 됨에 따라 단상유도전동기(20)의 구동효율이 저하되게 되는데, 회전자코어(61)의 내경 측에 상기 중공부(61c)가 형성된 상태에서는 중공부(61c)에 의해 자기경로가 회전축(70)을 우회하도록 안내되기 때문에, 자속감쇠 현상이 줄게 되어 단상유도전동기(20)의 구동효율이 향상되게 된다. That is, when the magnetic path formed in the stator 50 passes through the rotation shaft 70, as the magnetic flux attenuation increases while passing through the rotation shaft 70, the driving efficiency of the single-phase induction motor 20 decreases. In the state where the hollow portion 61c is formed on the inner diameter side of the rotor core 61, the magnetic path is guided to bypass the rotation shaft 70 by the hollow portion 61c, so that the magnetic flux attenuation phenomenon is reduced and the single-phase induction motor The driving efficiency of 20 is improved.

본 실시예에 있어서 상기 중공부(61c)는 홀형태로 형성되어 원주방향을 따라 등간격 상호 이격되도록 마련되어 있으나, 다른 실시예를 도시한 도 4의 a와 같이 중공부(61d)는 슬릿형태로 형성되어 원주방향을 따라 등간격 상호 이격되도록 마련되어도 무방하다.In the present embodiment, the hollow portion 61c is formed in a hole shape and is provided to be spaced apart from each other at equal intervals along the circumferential direction, but as shown in FIG. 4A of another embodiment, the hollow portion 61d has a slit shape. It may be formed so as to be spaced apart from each other at equal intervals along the circumferential direction.

그리고 또 다른 실시예를 도시한 도 4의 b와 같이 중공부(61e)는 회전자코어 (61)의 내경 쪽으로 오목한 곡선형 슬릿형태로 형성되되, 원주방향을 따라 상호 이격된 복수개로 마련되는 안쪽의 제1중공부(61f)와, 상기 제1중공부(61f) 바깥쪽에 원주방향을 따라 상호 이격된 복수개로 마련되는 제2중공부(61g)를 포함하도록 구성될 수도 있으며, 여기서 상기 제2중공부(61g)는 상호 인접한 상기 제1중공부(61f) 사이를 감싸도록 마련된다.And as shown in b of Figure 4 showing another embodiment hollow portion 61e is formed in the shape of a curved slit concave toward the inner diameter of the rotor core 61, a plurality of inner spaced apart along the circumferential direction It may be configured to include a first hollow portion (61f) of the first hollow portion 61f and a plurality of second hollow portion (61g) spaced apart from each other along the circumferential direction, wherein the second The hollow portion 61g is provided to surround the first hollow portion 61f adjacent to each other.

따라서 이때는 서로 엇갈려 배치되는 제1중공부(61f)와 제2중공부(61g)에 의해 자속이 회전축(70) 쪽으로 누설되는 것을 거의 완벽하게 차단할 수 있게 된다.Therefore, at this time, the magnetic flux is almost completely prevented from leaking toward the rotation shaft 70 by the first hollow portion 61f and the second hollow portion 61g which are alternately disposed.

이와 같이 중공부(61c,61d,61e)는 회전자코어(61)의 내경을 감싸는 복수개로 형성되어 회전축(70) 쪽으로 누설되는 자속을 차단 및 억제할 수 있도록 하는 범위 내에서 다양한 형상과 숫자를 갖도록 마련될 수 있다.As described above, the hollow parts 61c, 61d, and 61e are formed in plural to surround the inner diameter of the rotor core 61, so that various shapes and numbers can be made within the range to block and suppress the magnetic flux leaking toward the rotation shaft 70. It may be provided to have.

또 중공부(61c,61d,61e)가 회전자코어(61)의 내경에 너무 가깝게 위치되는 경우에는 회전자코어(61)의 내경 측 강성이 크게 저하되어 회전축(70)이 회전자코어(61)의 내경에 삽입되는 과정에서 회전자코어(61)의 내경 측이 찌그러지게 되는 등 회전자코어(61)의 강성이 크게 저하될 우려가 있는 반면, 중공부(61c,61d,61e)가 회전자코어(61)의 내경으로부터 너무 멀게 위치되는 경우에는 자속의 흐름에 방해가 될 수도 있으므로, 중공부(61c,61d,61e)는 이러한 사항을 모두 고려하여 회전자코어(61)의 강성을 크게 저하시키지 않는 한도 내에서 회전자코어(61)의 내경에 최대한 가깝게 위치되도록 마련하는 것이 바람직하다. In addition, when the hollow portions 61c, 61d, and 61e are positioned too close to the inner diameter of the rotor core 61, the inner diameter side rigidity of the rotor core 61 is greatly reduced, so that the rotating shaft 70 has the rotor core 61. The rigidity of the rotor core 61 may be greatly reduced, such as the inner diameter side of the rotor core 61 is distorted in the process of being inserted into the inner diameter of the core, while the hollow portions 61c, 61d, and 61e are rotated. If it is located too far from the inner diameter of the electromagnetic core 61, it may interfere with the flow of the magnetic flux, the hollow portion (61c, 61d, 61e) in consideration of all these matters to increase the rigidity of the rotor core 61 It is preferable to provide so as to be located as close as possible to the inner diameter of the rotor core 61 within the limit that does not decrease.

이상에서 상세히 설명한 바와 같이, 본 발명에 따른 압축기용 단상유도전동 기는 상기 중공부를 통해 자속이 회전축 쪽으로 누설되는 것을 효과적으로 차단 및 억제할 수 있게 되어 냉매의 압축작용에 따른 구동 효율이 향상되도록 하는 이점을 갖는다.As described above in detail, the single-phase induction motor for a compressor according to the present invention can effectively block and suppress leakage of magnetic flux toward the rotating shaft through the hollow part, thereby improving driving efficiency due to the compression action of the refrigerant. Have

Claims (4)

내경 측에 복수개의 고정자슬롯이 원주방향을 따라 등간격 상호 이격되도록 마련된 고정자코어와, 상기 고정자의 내측에 회전가능하도록 설치되되 내경에 회전축이 삽입되고 외경 측에 복수개의 회전자슬롯이 원주방향을 따라 등간격 상호 이격되도록 마련된 회전자코어를 구비하여 냉매의 압축동력을 제공하도록 마련된 압축기용 단상유도전동기에 있어서,A plurality of stator slots on the inner diameter side is provided so as to be spaced apart from each other at equal intervals along the circumferential direction, rotatably installed inside the stator, the rotating shaft is inserted into the inner diameter and the plurality of rotor slots on the outer diameter side in the circumferential direction In the single-phase induction motor for a compressor provided to provide the compression power of the refrigerant having a rotor core provided to be spaced apart from each other at equal intervals, 상기 회전자코어의 내경 측에는 상기 회전자코어를 길이방향으로 관통하는 복수개의 중공부가 상기 회전자코어의 내경을 감싸도록 마련된 것을 특징으로 하는 압축기용 단상유도전동기. Single-phase induction motor for the compressor, characterized in that a plurality of hollow portion penetrating the rotor core in the longitudinal direction on the inner diameter side of the rotor core to surround the inner diameter of the rotor core. 제 1항에 있어서, The method of claim 1, 상기 중공부는 홀형태로 형성되어 원주방향을 따라 등간격 상호 이격되도록 마련된 것을 특징으로 하는 압축기용 단상유도전동기.The hollow portion is formed in a hole shape single-phase induction motor for the compressor, characterized in that spaced apart from each other at equal intervals in the circumferential direction. 제 1항에 있어서,The method of claim 1, 상기 중공부는 슬릿형태로 형성되어 원주방향을 따라 등간격 상호 이격되도록 마련된 것을 특징으로 하는 압축기용 단상유도전동기.The hollow part is a single-phase induction motor for the compressor, characterized in that formed in a slit form spaced apart from each other at equal intervals in the circumferential direction. 제 1항에 있어서, The method of claim 1, 상기 중공부는 상기 회전자코어의 내경 쪽으로 오목한 곡선형 슬릿형태로 형성되되,The hollow portion is formed in the shape of a curved slit concave toward the inner diameter of the rotor core, 원주방향을 따라 상호 이격된 복수개로 마련되는 안쪽의 제1중공부와, 상기 제1관통부 바깥쪽에 원주방향을 따라 상호 이격된 복수개로 마련되는 제2중공부를 포함하고,A first hollow portion provided in a plurality of spaced apart from each other along the circumferential direction, and a second hollow portion provided in a plurality of spaced apart from each other along the circumferential direction outside the first through part, 상기 제2중공부는 상호 인접한 상기 제1중공부 사이를 감싸도록 마련된 것을 특징으로 하는 압축기용 단상유도전동기.Single phase induction motor for the compressor, characterized in that the second hollow portion is provided to surround between the adjacent first hollow portion.
KR1020050122615A 2005-12-13 2005-12-13 Single phase induction motor for comperssor KR20070062801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020050122615A KR20070062801A (en) 2005-12-13 2005-12-13 Single phase induction motor for comperssor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050122615A KR20070062801A (en) 2005-12-13 2005-12-13 Single phase induction motor for comperssor

Publications (1)

Publication Number Publication Date
KR20070062801A true KR20070062801A (en) 2007-06-18

Family

ID=38363035

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020050122615A KR20070062801A (en) 2005-12-13 2005-12-13 Single phase induction motor for comperssor

Country Status (1)

Country Link
KR (1) KR20070062801A (en)

Similar Documents

Publication Publication Date Title
JP4841536B2 (en) Motor and refrigerant compressor provided with the same
KR100567130B1 (en) Permanent magnet type electric motor, and compressor using the same
US9429156B2 (en) Compressor
JP6680779B2 (en) Compressor and refrigeration cycle device
WO2007111141A1 (en) Compressor
KR20180113564A (en) Electric motors, compressors, and refrigeration cycle units
CN109923757B (en) Permanent magnet type rotating electrical machine and compressor using the same
WO2017009969A1 (en) Rotor, electric motor, compressor, and refrigerator/air conditioning equipment
JP6195989B2 (en) Compressor, refrigeration cycle apparatus, and air conditioner
WO2014049914A1 (en) Rotary compressor
JP4259126B2 (en) Rotary compressor
KR101073270B1 (en) Compressor
JP6297220B2 (en) Electric motor for compressor, compressor, and refrigeration cycle apparatus
KR20180017790A (en) Linear compressor
JP4265229B2 (en) Rotary compressor
JP4120266B2 (en) Compressor
KR20070062801A (en) Single phase induction motor for comperssor
JP2011147313A (en) Electric motor, compressor, and refrigeration cycle device
JP5135779B2 (en) Compressor
JP6482615B2 (en) Compressor, refrigeration cycle apparatus, and air conditioner
JP2000175390A (en) Brushless motor and hermetrically sealed compressor
KR102254667B1 (en) A rotary compressor and a method for manufacturing the same
JP2008138591A5 (en)
WO2017213134A1 (en) Electric motor, hermetically sealed electric compressor using same, and refrigeration device
JP2006200374A (en) Rotary compressor

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination