KR20000038950A - Oil supply structure of compressor - Google Patents

Oil supply structure of compressor Download PDF

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Publication number
KR20000038950A
KR20000038950A KR1019980054128A KR19980054128A KR20000038950A KR 20000038950 A KR20000038950 A KR 20000038950A KR 1019980054128 A KR1019980054128 A KR 1019980054128A KR 19980054128 A KR19980054128 A KR 19980054128A KR 20000038950 A KR20000038950 A KR 20000038950A
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KR
South Korea
Prior art keywords
oil
crankshaft
compressor
crank shaft
oil supply
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Application number
KR1019980054128A
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Korean (ko)
Inventor
김경호
Original Assignee
구자홍
엘지전자 주식회사
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Application filed by 구자홍, 엘지전자 주식회사 filed Critical 구자홍
Priority to KR1019980054128A priority Critical patent/KR20000038950A/en
Publication of KR20000038950A publication Critical patent/KR20000038950A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/02Lubrication
    • F04B39/0223Lubrication characterised by the compressor type
    • F04B39/023Hermetic compressors
    • F04B39/0238Hermetic compressors with oil distribution channels
    • F04B39/0246Hermetic compressors with oil distribution channels in the rotating shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/0094Component 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 crankshaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/02Lubrication
    • F04B39/0223Lubrication characterised by the compressor type
    • F04B39/0276Lubrication characterised by the compressor type the pump being of the reciprocating piston type, e.g. oscillating, free-piston compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/02Lubrication
    • F04B39/0284Constructional details, e.g. reservoirs in the casing
    • F04B39/0292Lubrication of pistons or cylinders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05BINDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2210/00Working fluid
    • F05B2210/10Kind or type
    • F05B2210/12Kind or type gaseous, i.e. compressible
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00Pumps
    • Y10S417/902Hermetically sealed motor pump unit

Abstract

PURPOSE: A compressor having an oil supply structure is provided to improve the reliability by preventing a damage of the parts, a friction and an abrasion of the parts by sufficiently supplying the oil to the part where the sliding is performed in case of a right rotation of the crank shaft as well as a reverse rotation. CONSTITUTION: In a compressor including an airtight container filled with oil in the bottom, an electric machine part mounted in the inside of the airtight container for generating a driving power, a compressing machine part for compressing a refrigerant gas by receiving the driving power of the electric machine part, and a crank shaft(6) combined with a rotor forming the electric machine part and connected with the compressing machine part for driving to transmit the power, a compressor having an oil supply structure includes both direction oil passage formed on the crank shaft(6) so that the oil pumped in the end of the crank shaft(6) in case of right and reverse rotations of the crank shaft(6), sucked in the upper part for being supplied to the sliding part.

Description

압축기의 오일공급구조Compressor Oil Supply Structure

본 발명은 압축기의 오일공급구조에 관한 것으로, 특히 크랭크축의 정회전 뿐만 아니라 역회전시 오일 공급이 원활하게 이루어질 수 있도록 한 압축기의 오일공급구조에 관한 것이다.The present invention relates to an oil supply structure of a compressor, and more particularly, to an oil supply structure of a compressor which enables a smooth supply of oil during reverse rotation as well as forward rotation of a crankshaft.

일반적으로 압축기는 냉매가스를 흡입하고 압축하여 사이클내로 토출시키게 된다. 이와 같은 압축기의 일예로, 밀폐형 전동식 압축기(Reciprocal Compressor)는, 도 1에 도시한 바와 같이, 소정의 내부 체적을 갖는 밀폐용기(1)와, 상기 밀폐용기(1)의 내부 하측에 설치되어 외부에서 공급되는 전원에 의해 구동력을 발생시키는 전동기구부(10)와, 상기 밀폐용기(1)의 내부 상측에 설치되어 상기 전동기구부(10)의 구동력을 전달받아 가스를 흡입하여 압축시키는 압축기구부(20)를 포함하여 이루어진다.In general, the compressor sucks and compresses the refrigerant gas and discharges it into the cycle. As an example of such a compressor, a hermetic electric compressor (Reciprocal Compressor), as shown in Figure 1, is provided on the inside of the sealed container (1) having a predetermined internal volume, the lower side of the sealed container (1) to the outside Electric mechanism unit 10 for generating a driving force by the power supplied from the air, and the compression mechanism (20) is installed on the upper side of the sealed container (1) to receive the driving force of the electric mechanism unit 10 to suck the gas to compress. )

상기 전동기구부(10)는 밀폐용기(1)내에 스프링(2)에 의해 지지되는 고정자(STATOR)(3)와, 상기 고정자(3)내부에 회전가능하게 결합되는 회전자(ROTOR)(4)를 포함하여 구성되어 있다.The electric motor unit 10 includes a stator 3 supported by a spring 2 in a sealed container 1, and a rotor 4 rotatably coupled to the inside of the stator 3. It is configured to include.

상기 압축기구부(20)는 소정의 형상으로 형성되며 그 가운데 축삽입공(5a)이 형성되어 이루어져 상기 회전자(4)의 상측에 위치하는 프레임(5)과, 상기 프레임(5)의 일측에 결합되는 실린더(12)와, 상단부에 편심부(6a)가 형성되며 상기 프레임(5)의 축삽입공(5a)에 삽입됨과 더불어 상기 회전자(4)에 압입되어 결합되는 크랭크축(6)과, 상기 크랭크축(6)의 회전력을 전달받아 실린더(12)에서 직선 왕복운동하는 피스톤(7)과, 상기 실린더(12)의 일측에 결합되어 가스 흡입과 토출을 안내하는 밸브어셈블리(8) 및 이에 결합되는 헤드커버(9)를 포함하여 구성되어 있다.The compression mechanism 20 is formed in a predetermined shape, the shaft insertion hole (5a) is formed in the middle of the frame (5) located on the upper side of the rotor (4), one side of the frame (5) Crank shaft 6 which is coupled to the cylinder 12, the eccentric portion 6a is formed in the upper end and inserted into the shaft insertion hole (5a) of the frame (5) and press-fitted to the rotor (4) And a piston (7) linearly reciprocating in the cylinder (12) receiving the rotational force of the crankshaft (6), and a valve assembly (8) coupled to one side of the cylinder (12) to guide gas intake and discharge. And a head cover 9 coupled thereto.

그리고 상기 밀폐용기(1)의 저면에는 전동기구부(10)와 압축기구부(20)의 슬라이딩이 일어나는 부분에 윤활 및 냉각이 이루어지도록 공급되는 오일이 채워져 있다.And the bottom surface of the sealed container (1) is filled with the oil supplied so that the lubrication and cooling is performed in the sliding portion of the power mechanism 10 and the compression mechanism (20).

미설명 부호 11은 컨넥팅 로드이다.Reference numeral 11 is a connecting rod.

상기 밀폐형 전동식 압축기의 작동은 먼저, 전동기구부(10)에 전류가 인가되면 고정자(3)와 회전자(4)의 상호작용력에 의해 회전자(4)가 회전하게 되며, 상기 회전자(4)의 회전에 의해 회전자(4)에 압입된 크랭크축(6)이 프레임(5)에 의해 지지되면서 회전하게 된다. 상기 크랭크축(6)의 회전력은 직선 왕복운동으로 변환되어 피스톤(7)에 전달되며 상기 피스톤(7)은 실린더(12)내부를 왕복운동하면서 밸브어셈블리(8)를 통해 냉매가스를 흡입하고 압축하여 토출시키게 된다.In the operation of the hermetic electric compressor, first, when a current is applied to the electric mechanism part 10, the rotor 4 rotates by the interaction force between the stator 3 and the rotor 4, and the rotor 4 The crankshaft 6 press-fitted to the rotor 4 by the rotation of is rotated while being supported by the frame 5. The rotational force of the crankshaft 6 is converted into a linear reciprocating motion and transmitted to the piston 7, which inhales and compresses the refrigerant gas through the valve assembly 8 while reciprocating inside the cylinder 12. To be discharged.

그리고 밀폐용기(1)의 저면에 채워진 오일은 크랭크축(6)의 회전과 동시에 크랭크축(6)의 단부에 장착된 오일공급장치(M)에 의해 펌핑되어 상기 오일공급장치(M)와 연통되도록 형성된 크랭크축(6)에 형성된 오일공급유로를 통해 전동기구부(10) 및 압축기구부(20)의 슬라이딩이 일어나는 부분에 공급된다.The oil filled in the bottom surface of the sealed container 1 is pumped by the oil supply device M mounted at the end of the crankshaft 6 at the same time as the crankshaft 6 rotates and communicates with the oil supply device M. The oil supply passage formed in the crankshaft 6 so as to be supplied is supplied to a portion where the sliding of the electric mechanism unit 10 and the compression mechanism unit 20 occurs.

상기 크랭크축(6)은, 도 2에 도시한 바와 같이, 일정 직경과 길이를 갖는 축부(6b)와, 상기 축부(6b)의 단부에 축부(6b)의 중심과 편심되게 형성된 편심부(6a)와, 상기 축부(6b)와 편심부(6a)사이에 형성되어 회전시 편심부(6a)에 의한 불균형을 조절하는 밸런스웨이트부(6c)를 구비하여 형성되어 있다.As shown in FIG. 2, the crankshaft 6 has a shaft portion 6b having a constant diameter and length, and an eccentric portion 6a formed so as to be eccentric with the center of the shaft portion 6b at the end of the shaft portion 6b. ) And a balance weight portion 6c formed between the shaft portion 6b and the eccentric portion 6a to adjust the imbalance caused by the eccentric portion 6a during rotation.

그리고 크랭크축(6)에 형성된 오일공급유로는 크랭크축 축부(6b)의 단부에 오일공급장치(M)가 장착되는 장착홈(6d)이 형성되며 상기 장착홈(6d)에 이어 축부(6b)의 중간부분에 연통되도록 제1 오일통로(6d)가 형성되고 상기 제1 오일통로(6d)에 이어 축부(6b)의 외주면에 왼나사 형태의 나선형 제1 오일그루브(Oil groove)(6f)가 형성되며 상기 제1 오일그루브(6f)에 이어 편심부(6a)의 내부를 관통하는 제2 오일통로(6g)가 형성되고 상기 편심부(6a)의 외주면에 제2 오일통로(6g)와 연통되는 제2 나선형 오일그루브(6h)가 형성되어 이루어진다.The oil supply flow path formed in the crankshaft 6 is provided with a mounting groove 6d at which an oil supply device M is mounted at the end of the crankshaft shaft portion 6b, followed by the shaft 6b. A first oil passage 6d is formed so as to communicate with the middle portion of the helical shaft, and a spiral first oil groove 6f having a left screw shape is formed on the outer circumferential surface of the shaft portion 6b after the first oil passage 6d. And a second oil passage 6g penetrating the inside of the eccentric portion 6a after the first oil groove 6f and communicating with the second oil passage 6g on the outer circumferential surface of the eccentric portion 6a. The second spiral oil groove 6h is formed.

상기 크랭크축(6)은 축부(6b)의 하측이 회전자(4)에 압입되며 축부(6b)의 상측이 프레임의 축삽입공(5a)에 삽입되고 편심부(6a)는 컨넥팅로드(11)와 회전가능하게 연결되도록 결합되어 있다.The crankshaft 6 has a lower side of the shaft portion 6b is pressed into the rotor 4, the upper side of the shaft portion 6b is inserted into the shaft insertion hole 5a of the frame and the eccentric portion 6a is connected to the connecting rod ( 11) is rotatably connected.

상기 오일이 공급되는 과정은 먼저 전동기구부(10)를 구성하는 회전자(4)가 회전함에 의해 크랭크축(6)이 회전하게 되면 그 하단부에 장착된 오일공급장치(M)가 함께 회전하면서 오일을 펌핑하게 된다. 상기 펌핑된 오일은 제1 오일통로(6e)를 통해 흡상하여 제1 오일그루브(6f)를 통해 유동하면서 그 일부는 크랭크축(6)과 프레임 축삽입공(5a)을 이루는 내주면사이에 공급되고 나머지 오일은 제2 오일통로(6g)를 통해 크랭크축(6)의 상측으로 비산되어 피스톤(7)과 실린더(12)사이 등의 슬라이딩이 일어나는 부분에 공급된다. 또한 제2 오일통로(6g)로 통하던 오일의 일부가 제2 오일그루브(6h)를 통해 편심부(6a)와 컨넥팅로드(11)사이에 공급된다.In the process of supplying the oil, when the crankshaft 6 is rotated by the rotation of the rotor 4 constituting the electric mechanism part 10, the oil supply device M mounted at the lower end thereof rotates together with the oil. Will be pumped. The pumped oil is sucked through the first oil passage 6e and flows through the first oil groove 6f while a part thereof is supplied between the crank shaft 6 and the inner circumferential surface forming the frame shaft insertion hole 5a. The remaining oil is scattered to the upper side of the crankshaft 6 through the second oil passage 6g and is supplied to a portion where sliding between the piston 7 and the cylinder 12 occurs. In addition, a portion of the oil that has passed through the second oil passage 6g is supplied between the eccentric portion 6a and the connecting rod 11 through the second oil groove 6h.

그러나 상기한 바와 같은 종래의 오일공급구조는 크랭크축(6)에 형성된 오일공급유로가 왼나사 형태로 한쪽방향의 나선형으로만 형성되어 있어 전류의 공급에 의해 고정자(3)와의 상호작용력에 의해 회전하는 회전자(4) 및 이에 결합된 크랭크축(6)이 오결선이나 기타이유로 역회전하게 될 경우 오일공급유로를 통해 오일이 충분히 공급되지 못하여 슬라이딩이 이루어지는 부품에 마찰 및 마모가 발생하게 될 뿐만 아니라 작동이 원활하게 이루어지지 못하게 되는 문제점이 있었다.However, in the conventional oil supply structure as described above, the oil supply flow path formed in the crankshaft 6 is formed only in a spiral in one direction in the form of a left-handed screw, which rotates by the interaction force with the stator 3 by the supply of current. When the rotor 4 and the crankshaft 6 coupled thereto are reversely rotated due to a miswiring wire or other reasons, not only oil is sufficiently supplied through the oil supply passage, but friction and wear may occur on the sliding components. There was a problem that does not work smoothly.

상기한 바와 같은 문제점을 감안하여 안출한 본 발명의 목적은 크랭크축의 정회전 뿐만 아니라 역회전시 오일 공급이 원활하게 이루어질 수 있도록 한 압축기의 오일공급구조를 제공함에 있다.The object of the present invention devised in view of the problems described above is to provide an oil supply structure of a compressor that enables the oil supply to be smoothly performed during reverse rotation as well as forward rotation of the crankshaft.

도 1은 일반적인 밀폐형 전동식 압축기의 일예를 도시한 단면도,1 is a cross-sectional view showing an example of a general hermetic electric compressor,

도 2는 종래 압축기의 오일공급구조를 도시한 크랭크축의 정면도,Figure 2 is a front view of the crankshaft showing the oil supply structure of the conventional compressor,

도 3은 본 발명의 압축기 오일공급구조를 도시한 정면도,3 is a front view showing a compressor oil supply structure of the present invention;

도 4는 본 발명의 압축기 오일공급구조의 작용상태를 도시한 정면도,4 is a front view showing an operating state of the compressor oil supply structure of the present invention;

(도면의 주요부분에 대한 부호의 설명)(Explanation of symbols for the main parts of the drawing)

1 ; 밀폐용기 4 ; 회전자One ; Airtight containers 4; Rotor

6 ; 크랭크축 6k ; 제3 오일통로6; Crankshaft 6k; Third oil passage

6m ; 제3 나선형 오일그루브 6n ; 제4 나선형 오일그루브6m; Third spiral oil groove 6n; 4th Spiral Oil Groove

10 ; 전동기구부 20 ; 압축기구부10; Electric mechanism part 20; Compressor section

상기한 바와 같은 본 발명의 목적을 달성하기 위하여 저면에 오일이 채워진 밀폐용기와, 상기 밀폐용기의 내부에 설치되어 구동력을 발생시키는 전동기구부와, 상기 전동기구부의 구동력을 전달받아 냉매가스를 압축하는 압축기구부와, 상기 전동기구부를 구성하는 회전자에 결합되고 상기 압축기구부와 연결되어 동력을 전달하도록 구동하는 크랭크축을 포함하는 압축기에 있어서; 상기 크랭크축의 정회전 및 역회전시 크랭크축의 단부에서 펌핑된 오일이 상측으로 흡상하여 슬라이딩 부분에 공급되도록 크랭크축에 양방향 오일유로를 형성함을 특징으로 하는 압축기의 오일공급구조가 제공된다.In order to achieve the object of the present invention as described above, an oil-filled sealed container on the bottom surface thereof, an electric mechanism part installed inside the sealed container to generate a driving force, and receiving a driving force of the electric mechanism part to compress the refrigerant gas. A compressor comprising a compression mechanism and a crank shaft coupled to the rotor constituting the electric mechanism and driven to transmit power connected to the compression mechanism; An oil supply structure of a compressor is provided, wherein a two-way oil flow path is formed on the crankshaft so that oil pumped from the end of the crankshaft sucks upward and is supplied to the sliding part during forward and reverse rotation of the crankshaft.

상기 양방향 오일유로는 크랭크축의 단부와 크랭크축 중간부분 외주면과 연통되도록 제3 오일통로가 형성되고 상기 제3 오일통로에 이어 크랭크축의 외주면에 왼나사 방향의 제3 나선형 오일그루브가 형성되며 상기 제3 오일통로에 이어 크랭크축의 외주면에 오른나사 방향의 제4 나선형 오일그루브가 형성되어 이루어짐을 특징으로 하는 압축기의 오일공급구조가 제공된다.The two-way oil flow path is formed with a third oil passage so as to communicate with the end of the crankshaft and the outer peripheral surface of the crankshaft middle portion, a third spiral oil groove in the left screw direction is formed on the outer circumferential surface of the crankshaft following the third oil passage; The oil supply structure of the compressor is provided after the passage is formed by forming a fourth spiral oil groove in a right-hand direction on the outer circumferential surface of the crankshaft.

이하, 본 발명의 압축기 오일공급구조를 첨부도면에 도시한 실시예에 따라 설명하면 다음과 같다.Hereinafter, the compressor oil supply structure of the present invention will be described according to the embodiment shown in the accompanying drawings.

본 발명의 압축기 오일공급구조는, 도 3에 도시한 바와 같이, 먼저 밀폐용기(1)의 내부에 구동력을 발생시키는 전동기구부(10)가 설치되며, 상기 전동기구부(10)의 상측에 전동기구부(10)의 구동력을 전달받아 냉매가스를 압축하는 압축기구부(20)가 설치되고, 상기 밀폐용기(1)의 저면에 오일이 채워진다. 그리고 상기 전동기구부(10)의 회전 구동력을 직선 왕복운동으로 변환하여 압축기구부(20)에 전달하는 크랭크축(6)이 전동기구부(10)를 구성하는 회전자(4)에 압입되어 결합된다. 또한 크랭크축(6)의 상부는 압축기구부(20)를 구성하는 프레임(5)에 형성된 축삽입공(5a)에 삽입되어 지지되며, 그 단부에는 오일을 펌핑하는 오일공급장치(M)가 장착될 뿐만 아니라 오일에 잠겨져 있다.In the compressor oil supply structure of the present invention, as shown in FIG. 3, first, an electric mechanism part 10 for generating a driving force is provided inside the sealed container 1, and the electric mechanism part is disposed above the electric mechanism part 10. Compressor mechanism 20 for compressing the refrigerant gas is received by receiving the driving force of the (10) is installed, the oil is filled in the bottom surface of the sealed container (1). And the crankshaft 6 for converting the rotational driving force of the transmission mechanism unit 10 into a linear reciprocating motion to be transmitted to the compression mechanism unit 20 is pressed into the rotor 4 constituting the transmission mechanism unit 10 is coupled. In addition, the upper part of the crankshaft 6 is inserted into and supported by the shaft insertion hole 5a formed in the frame 5 constituting the compression mechanism 20, and an oil supply device M for pumping oil is mounted at the end thereof. As well as being submerged in oil.

그리고 상기 회전자(4)에 압입되는 크랭크축(6)의 정회전 및 역회전시 크랭크축(6)의 단부에서 펌핑된 오일이 상측으로 흡상되어 슬라이딩 부분에 공급되도록 크랭크축(6)에 양방향 오일유로가 형성된다.The oil pumped at the end of the crankshaft 6 is sucked upward and supplied to the sliding part in the forward and reverse directions of the crankshaft 6 press-fitted to the rotor 4 in both directions. An oil channel is formed.

상기 양방향 오일유로는 크랭크축(6)의 단부와 크랭크축(6) 중간부분 외주면과 연통되도록 제3 오일통로(6k)가 형성되고 상기 제3 오일통로(6k)에 이어 크랭크축(6)의 외주면에 왼나사 방향의 제3 나선형 오일그루브(6m)가 형성되며, 상기 제3 오일통로(6k)에 이어 크랭크축(6)의 외주면에 오른나사 방향의 제4 나선형 오일그루브(6n)가 형성되어 이루어진다.The two-way oil flow path is formed such that the third oil passage 6k communicates with the end of the crankshaft 6 and the outer circumferential surface of the middle portion of the crankshaft 6, followed by the third oil passage 6k. A third spiral oil groove 6m in the left-hand direction is formed on the outer circumferential surface, and a fourth spiral oil groove 6n in the right-hand direction is formed on the outer circumferential surface of the crankshaft 6 following the third oil passage 6k. Is done.

상기 제3 오일통로(6k)와 제3 나선형 오일그루브(6m)는 크랭크축(6)의 정회전시 오일이 흡상되는 정방향 오일유로를 형성하게 되며, 상기 제3 오일통로(6k)와 제4 나선형 오일그루브(6n)는 크랭크축(6)의 역회전시 오일이 흡상되는 역방향 오일유로를 형성하게 된다.The third oil passage 6k and the third spiral oil groove 6m form a forward oil passage through which oil is sucked during the forward rotation of the crankshaft 6, and the third oil passage 6k and the fourth spiral. The oil groove 6n forms a reverse oil flow path where oil is sucked up when the crank shaft 6 rotates in reverse.

상기 크랭크축(6)을 형성하는 밸런스웨이트부(6c) 및 편심부(6a)의 내부에는 관통되는 편심부오일통로(6p)가 형성되며 상기 편심부오일통로(6p)는 제3,4 나선형 오일그루브(6m)(6n)가 교차하는 부분과 연통된다. 그리고 상기 편심부(6a)의 외주면에 왼나사 방향 및 오른나사 방향의 제3,4 나선형 오일그루브(6m)(6n)가 형성되고 상기 제3.4 나선형 오일그루브(6m)(6n)는 상기 편심부오일통로(6p)와 연통된다.The eccentric part oil passage 6p is formed inside the balance weight portion 6c and the eccentric portion 6a which form the crankshaft 6, and the eccentric portion oil passage 6p is the third and fourth spirals. The oil grooves 6m and 6n communicate with each other. The third and fourth spiral oil grooves 6m and 6n are formed on the outer circumferential surface of the eccentric portion 6a in the left and right screw directions, and the 3.4 spiral oil grooves 6m and 6n are the eccentric portion oils. It communicates with the passage 6p.

상기 크랭크축(6)은 회전자(4)에 압입됨과 아울러 프레임의 축삽입공(5a)에 삽입되며 또한 그 편심부(6a)는 피스톤(7)과 연결되는 컨넥팅로드(11)와 연결된다.The crankshaft 6 is pressed into the rotor 4 and inserted into the shaft insertion hole 5a of the frame, and the eccentric portion 6a is connected to the connecting rod 11 connected to the piston 7. do.

상기 제3 오일통로(6k)는 크랭크축(6)이 회전자(4)에 압입되는 부분에 위치하게 되며, 상기 제3 오일통로(6k)는 오일공급장치(M)와 연통되도록 형성된다.The third oil passage 6k is located at a portion where the crankshaft 6 is pressed into the rotor 4, and the third oil passage 6k is formed to communicate with the oil supply device M.

그리고 상기 제3,4 나선형 오일그루브(6m)(6n)는 크랭크축(6)이 삽입되는 프레임의 축삽입공(5a) 내주면 영역 및 편심부(6a)의 외주면 영역에 위치하게 된다.The third and fourth spiral oil grooves 6m and 6n are positioned in the inner circumferential region of the shaft insertion hole 5a and the outer circumferential surface region of the eccentric portion 6a of the frame into which the crank shaft 6 is inserted.

이하, 본 발명의 압축기 오일공급구조의 작용효과를 설명하면 다음과 같다.Hereinafter, the operational effects of the compressor oil supply structure of the present invention will be described.

먼저, 전동기구부를 구성하는 회전자(4)가 회전함에 의해 크랭크축(6)이 회전하게 되면 그 하단부에 장착된 오일공급장치(M)가 함께 회전하면서 오일을 펌핑하게 된다. 상기 펌핑된 오일은 제3 오일통로(6k) 및 제3 나선형 오일그루브(6m)를 통해 유동하여 프레임(5)과 크랭크축(6)사이 및 편심부(6a)와 컨넥팅로드(11)사이에 공급되며 그 일부는 편심부오일통로(6p)를 통해 비산되어 기타 슬라이딩이 이루어지는 부분에 공급된다.First, when the crankshaft 6 rotates by rotating the rotor 4 constituting the electric mechanism part, the oil supply device M mounted at the lower end thereof rotates together to pump oil. The pumped oil flows through the third oil passage (6k) and the third spiral oil groove (6m) between the frame (5) and the crankshaft (6) and between the eccentric (6a) and the connecting rod (11) Part of which is scattered through the eccentric part oil passage 6p and is supplied to other sliding parts.

한편, 상기 크랭크축(6)이 역회전하게 될 경우 오일공급장치에 의해 펌핑된 오일이 제3 오일통로(6k) 및 제4 나선형 오일그루브를 통해 유동하여 프레임과 크랭크축(6)사이 및 편심부(6a)와 컨넥팅로드(11)사이에 공급되며 그 일부는 편심부오일통로(6p)를 통해 비산되어 기타 슬라이딩이 이루어지는 부분에 공급된다.On the other hand, when the crankshaft (6) is rotated in reverse, the oil pumped by the oil supply device flows through the third oil passage (6k) and the fourth spiral oil groove between the frame and the crankshaft (6) and piece It is supplied between the core part 6a and the connecting rod 11, and a part thereof is scattered through the eccentric part oil passage 6p and supplied to the other sliding part.

본 발명은 전동기구부(10)의 구동력을 압축기구부(20)에 전달하는 크랭크축(6)이 정회전시 밀폐용기(1)의 저면에 채워진 오일이 슬라이딩이 이루어지는 부분에 충분히 공급될 뿐만 아니라 크랭크축(6)이 역회전하게 될 경우에도 오일 공급이 충분히 이루어지게 됨으로써 부품의 마찰 및 마모를 방지하게 되어 작동을 원활하게 할 뿐만 아니라 부품의 파손을 방지하게 된다.According to the present invention, the crankshaft 6 which transmits the driving force of the electric mechanism part 10 to the compression mechanism 20 is not only sufficiently supplied to the sliding part of the oil filled in the bottom surface of the airtight container 1 when the crankshaft is rotated forward, as well as the crankshaft. Even if (6) is reverse rotation, the oil supply is made enough to prevent the friction and wear of the components to facilitate the operation as well as to prevent the damage of the components.

이상에서 설명한 바와 같이, 본 발명에 의한 압축기의 오일공급구조는 전동기구부의 구동력을 전달받아 회전하는 크랭크축이 정회전할 경우 슬라이딩이 이루어지는 부분에 오일이 충분하게 공급될 뿐만 아니라 크랭크축이 역회전하게 될 경우에도 슬라이딩이 이루어지는 부분에 오일 공급이 충분하게 이루어지게 되어 부품의 마찰 및 마모를 방지하게 됨으로써 작동을 원활하게 하고 부품의 파손을 방지하여 신뢰성을 향상시킬 수 있는 효과가 있다.As described above, in the oil supply structure of the compressor according to the present invention, when the crank shaft rotates forward by receiving the driving force of the electric mechanism part, the oil is supplied sufficiently to the sliding part and the crank shaft reversely rotates. In this case, the oil supply is sufficiently provided to the sliding part, thereby preventing friction and wear of the parts, thereby improving operation and preventing breakage of the parts, thereby improving reliability.

Claims (2)

저면에 오일이 채워진 밀폐용기와, 상기 밀폐용기의 내부에 설치되어 구동력을 발생시키는 전동기구부와, 상기 전동기구부의 구동력을 전달받아 냉매가스를 압축하는 압축기구부와, 상기 전동기구부를 구성하는 회전자에 결합되고 상기 압축기구부와 연결되어 동력을 전달하도록 구동하는 크랭크축을 포함하는 압축기에 있어서; 상기 크랭크축의 정회전 및 역회전시 크랭크축의 단부에서 펌핑된 오일이 상측으로 흡상하여 슬라이딩 부분에 공급되도록 크랭크축에 양방향 오일유로를 형성함을 특징으로 하는 압축기의 오일공급구조.An airtight container filled with oil on a bottom surface, an electric mechanism part installed inside the sealed container to generate a driving force, a compressor mechanism part for compressing refrigerant gas by receiving a driving force of the electric mechanism part, and a rotor constituting the electric mechanism part. A compressor comprising: a crank shaft coupled to the compressor mechanism and driven to transmit power; And a two-way oil flow path formed on the crankshaft such that oil pumped from the end of the crankshaft is sucked upward and supplied to the sliding part during forward and reverse rotation of the crankshaft. 제1항에 있어서, 상기 양방향 오일유로는 크랭크축의 단부와 크랭크축 중간부분 외주면과 연통되도록 제3 오일통로가 형성되고 상기 제3 오일통로에 이어 크랭크축의 외주면에 왼나사 방향의 제3 나선형 오일그루브가 형성되며 상기 제3 오일통로에 이어 크랭크축의 외주면에 오른나사 방향의 제4 나선형 오일그루브가 형성되어 이루어짐을 특징으로 하는 압축기의 오일공급구조.According to claim 1, wherein the two-way oil flow path is formed to communicate with the end of the crankshaft and the outer peripheral surface of the crankshaft middle portion, and a third spiral oil groove in the left screw direction on the outer peripheral surface of the crankshaft following the third oil passage And a fourth spiral oil groove formed on the outer circumferential surface of the crankshaft after the third oil passage in a right direction.
KR1019980054128A 1998-12-10 1998-12-10 Oil supply structure of compressor KR20000038950A (en)

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US7100743B2 (en) 2001-12-17 2006-09-05 Lg Electronics Inc. Crank shaft in dual capacity compressor
KR100771594B1 (en) * 2001-07-27 2007-10-31 엘지전자 주식회사 crankshaft of compressor for refrigerating machine
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KR100910698B1 (en) * 2002-10-21 2009-08-04 파나소닉 주식회사 Reciprocating electric compressor
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US7100743B2 (en) 2001-12-17 2006-09-05 Lg Electronics Inc. Crank shaft in dual capacity compressor
KR100854744B1 (en) * 2002-08-30 2008-08-27 엘지전자 주식회사 A oil furnishing structure of crank-shaft for hermetic compressor
KR100910698B1 (en) * 2002-10-21 2009-08-04 파나소닉 주식회사 Reciprocating electric compressor
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KR101467577B1 (en) * 2008-07-22 2014-12-05 엘지전자 주식회사 compressor
KR101528643B1 (en) * 2008-07-22 2015-06-16 엘지전자 주식회사 Compressor
KR20120076144A (en) * 2010-12-29 2012-07-09 엘지전자 주식회사 Hermetic compressor
WO2022218207A1 (en) * 2021-04-14 2022-10-20 安徽美芝制冷设备有限公司 Crankshaft, inverter compressor and refrigeration device
US11952998B2 (en) 2021-04-14 2024-04-09 Anhui Meizhi Compressor Co., Ltd. Crankshaft, inverter compressor, and refrigeration device

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