KR100246404B1 - Piston oil supplying structure of an enclosed type compressor - Google Patents

Piston oil supplying structure of an enclosed type compressor Download PDF

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Publication number
KR100246404B1
KR100246404B1 KR1019970055623A KR19970055623A KR100246404B1 KR 100246404 B1 KR100246404 B1 KR 100246404B1 KR 1019970055623 A KR1019970055623 A KR 1019970055623A KR 19970055623 A KR19970055623 A KR 19970055623A KR 100246404 B1 KR100246404 B1 KR 100246404B1
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South Korea
Prior art keywords
piston
oil
connecting rod
cylinder
crankshaft
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KR1019970055623A
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Korean (ko)
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KR19990034129A (en
Inventor
이인섭
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구자홍
엘지전자주식회사
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Priority to KR1019970055623A priority Critical patent/KR100246404B1/en
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    • 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
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • F04B39/0238—Hermetic compressors with oil distribution channels
    • F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
    • 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
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/0276—Lubrication characterised by the compressor type the pump being of the reciprocating piston type, e.g. oscillating, free-piston compressors
    • 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
    • F04B39/02—Lubrication
    • F04B39/0284—Constructional details, e.g. reservoirs in the casing
    • F04B39/0292—Lubrication of pistons or cylinders
    • 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
    • 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
    • Y10S417/902—Hermetically sealed motor pump unit

Abstract

본 발명은 밀폐형 전동식 압축기의 피스톤 오일공급구조에 관한 것으로, 본 발명은 가스를 흡입,압축하여 토출시키는 압축기구부를 구성하는 실린더(6a)의 일측 단부에 크랭크축의 오일유로(5a)를 통해 흡상하여 비산된 오일이 떨어져 고이도록 하는 오일저장홈(6c)을 형성하고, 상기 실린더에 삽입된 피스톤(7)이 하사점에 이르렀을 때 상기 오일저장홈(6c)과 연통됨과 더불어 컨넥팅로드(8)와 연결되는 부분에 오일이 유입되도록 피스톤(7)에 오일유입홈(7c)을 형성하여 피스톤핀 및 이에 결합되는 컨넥팅로드에 충분한 오일이 공급되도록 함으로써 컨넥팅로드의 소단부와 피스톤핀부분의 마모를 감소시켜 부품의 수명 및 제품의 신뢰성을 향상시킬 수 있도록 한 것이다.The present invention relates to a piston oil supply structure of a hermetic electric compressor, and the present invention relates to a piston oil supply structure of a cylinder 6a constituting a compression mechanism for suctioning, compressing and discharging gas through the oil passage 5a of the crankshaft. An oil storage groove 6c is formed to allow scattered oil to fall off, and when the piston 7 inserted into the cylinder reaches the bottom dead center, the oil storage groove 6c communicates with the connecting rod 8. The oil inlet groove 7c is formed in the piston 7 so that the oil is introduced into the part connected to the) so that sufficient oil is supplied to the piston pin and the connecting rod coupled thereto. It is to reduce wear and improve the life of the parts and the reliability of the product.

Description

밀폐형 전동식 압축기의 피스톤 오일공급구조Piston Oil Supply Structure of Hermetic Electric Compressor

본 발명은 밀폐형 전동식 압축기의 피스톤 오일공급구조에 관한 것으로, 특히 크랭크축의 회전운동을 직선운동으로 변환하여 피스톤에 전달하는 컨넥팅로드 및 이에 연결,결합되는 피스톤핀에 오일이 충분히 공급될 수 있도록 한 밀폐형 전동식 압축기의 피스톤 오일공급구조에 관한 것이다.The present invention relates to a piston oil supply structure of a hermetic electric compressor, and in particular, to convert the rotational motion of the crankshaft into linear motion so that the oil is sufficiently supplied to the connecting rod and the piston pin connected to and coupled to the piston. A piston oil supply structure of a hermetic electric compressor.

일반적으로 밀폐형 전동식 압축기는 소정의 내부 체적을 갖는 밀폐용기와, 상기 밀폐용기의 내측 하부에 설치되어 외부에서 공급되는 전원에 의해 구동력을 발생시키는 전동기구부와, 상기 밀폐용기의 내측 상부에 설치되어 상기 전동기구부의 구동력을 전달받아 가스를 흡입하여 압축시키는 압축기구부를 포함하여 구성된다.In general, the hermetic electric compressor is a hermetically sealed container having a predetermined internal volume, an electric mechanism part installed at an inner lower side of the hermetically sealed container to generate a driving force by power supplied from the outside, and installed at an inner upper portion of the hermetically sealed container. It is configured to include a compression mechanism for receiving and compressing the gas by receiving the driving force of the electric mechanism.

도 1은 상기 밀폐형 전동식 압축기의 일예를 도시한 것으로, 이에 도시한 바와 같이, 상기 전동기구부는 밀폐용기(1)의 내측 하부에 스프링(2)에 의해 지지되는 스테이터(STATOR)(3)와, 상기 스테이터(3)내부에 회전가능하게 결합되는 로터(ROTOR)(4)와, 내부에 오일유로(5a)가 형성되고 상단부에 편심부(5b)가 형성되어 상기 로터(4)에 압입되어 결합되는 크랭크축(5)을 포함하여 구성된다.1 shows an example of the hermetic electric compressor, and as shown therein, the electric mechanism part includes a stator 3 supported by a spring 2 at an inner lower portion of the hermetic container 1, A rotor (ROTOR) 4 is rotatably coupled to the inside of the stator 3, and an oil passage 5a is formed therein, and an eccentric portion 5b is formed at an upper end thereof, and is pressed into the rotor 4 to be coupled thereto. It is comprised including the crankshaft 5 which becomes.

상기 압축기구부는 일측에 실린더(6a)가 형성되고 측부에 상기 크랭크축(5)이 삽입되는 관통공(6b)이 형성되어 이루어져 상기 크랭크축(5)이 삽입됨과 더불어 상기 스테이터(3)에 지지,고정되는 실린더블럭(6)과, 상기 실린더(6a)에 슬라이딩가능하도록 삽입되는 피스톤(7)과, 상기 피스톤(7)과 크랭크축의 편심부(5b)를 연결하여 크랭크축(5)의 회전운동을 직선운동으로 변환하여 피스톤(7)을 실린더(6a)내에서 왕복운동시키는 컨넥팅로드(8)와, 상기 실린더(6a)의 일측 단부에 결합되어 실린더(6a)내로의 가스 흡입과 토출을 안내하는 밸브어셈블리(9) 및 이에 결합되는 헤드커버(10)와, 상기 헤드커버(10)와 연통되도록 결합되어 소음을 저감시키는 소음기(11)를 포함하여 구성된다.The compressor section is formed with a cylinder 6a on one side and a through hole 6b through which the crankshaft 5 is inserted into the side thereof, whereby the crankshaft 5 is inserted and supported by the stator 3. Rotation of the crankshaft 5 is connected to the fixed cylinder block 6, the piston 7 slidably inserted into the cylinder 6a, and the piston 7 and the eccentric portion 5b of the crankshaft. A connecting rod 8 which reciprocates the piston 7 in the cylinder 6a by converting the motion into a linear motion, and is coupled to one end of the cylinder 6a to inhale and discharge gas into the cylinder 6a. It comprises a valve assembly (9) for guiding the head cover 10 and coupled thereto, and a silencer (11) coupled to communicate with the head cover 10 to reduce the noise.

그리고 상기 밀페용기(1)의 저면에는 슬라이딩되는 부분에 공급되는 오일이 채워져 있고, 상기 밀폐용기(1)의 일측에는 가스가 상기 실린더(6a)내로 유입되도록 안내하는 흡입파이프(12)가 결합되며, 그 측부에는 실린더(6a)에서 압축된 가스가 토출되는 토출파이프(13)가 결합된다.And the bottom surface of the hermetic container (1) is filled with the oil supplied to the sliding portion, one side of the closed container (1) is coupled to the suction pipe 12 for guiding the gas to flow into the cylinder (6a) The discharge pipe 13 for discharging the gas compressed in the cylinder 6a is coupled to the side thereof.

미설명 부호 14는 크랭크축의 편심부와 컨넥팅로드사이에 삽입되는 슬리이브(SLEEVE)를 나타낸 것이다.Reference numeral 14 denotes a sleeve inserted between the eccentric portion of the crankshaft and the connecting rod.

상기한 바와 같은 밀폐형 전동식 압축기의 작동은 먼저, 전류가 인가되면 로터(4)가 회전함과 더불어 이에 결합된 크랭크축(5)이 회전하게 된다. 상기 크랭크축(5)의 회전에 의해 크랭크축의 편심부(5b)에 결합된 컨넥팅로드(8)가 편심부(5b)의 원운동을 직선운동으로 전환시켜 피스톤(7)을 실린더(6a)내에서 왕복운동시키게 되며, 이 피스톤(7)의 왕복운동에 의해 실린더(6a)내로 가스가 흡입,압축되어 토출된다.In the operation of the hermetic electric compressor as described above, first, when the current is applied, the rotor 4 rotates and the crank shaft 5 coupled thereto rotates. The connecting rod 8 coupled to the eccentric portion 5b of the crankshaft by the rotation of the crankshaft 5 converts the circular motion of the eccentric portion 5b into a linear movement, thereby converting the piston 7 into the cylinder 6a. The gas is sucked in, compressed and discharged into the cylinder 6a by the reciprocating motion of the piston 7.

한편, 상기 밀폐형 전동식 압축기에서 크랭크축(5)의 회전운동을 직선운동으로 변환시켜주는 컨넥팅로드(8)는 소정의 길이로 형성된 연결부(8a)의 일측에 연장되어 원형으로 제1결합부(8b)가 형성되고 이 연결부(8a)의 타측에 연장되어 원형으로 형성된 제2결합부(8c)가 형성되며 상기 제1결합부(8b)에는 관통공인 대단부(8d)가 형성되고 상기 제2결합부(8c)에는 관통공인 소단부(8e)가 형성되어 이루어져 있다. 그리고 상기 대단부(8d)에는 원통형으로 형성된 슬리이브(14)가 결합되며, 이 슬리이브(14)는 크랭크축의 편심부(5b)에 삽입된다.On the other hand, in the hermetic electric compressor, the connecting rod 8 for converting the rotational movement of the crankshaft 5 into linear movement extends to one side of the connecting portion 8a formed to a predetermined length and has a circular first coupling portion ( 8b) is formed, and the second coupling portion 8c extending in the other side of the connecting portion 8a is formed in a circular shape, and the first coupling portion 8b is formed with a large end portion 8d, which is a through hole, and the second coupling portion 8c is formed. The small end part 8e which is a through hole is formed in the engaging part 8c. A sleeve 14 formed in a cylindrical shape is coupled to the large end portion 8d, and the sleeve 14 is inserted into the eccentric portion 5b of the crankshaft.

상기 피스톤(7)은 소정의 길이를 갖는 환봉형으로 형성되며 일측 단부에 소정의 깊이로 상기 컨넥팅로드의 제2연결부(8c)가 삽입될 수 있도록 삽입홈(7a)가 형성되며 상기 삽입홈(7a)에 수직방향으로 관통되도록 환봉형의 일측 외주면에 핀삽입공(7b)이 형성되어 이루어진다. 그리고 상기 컨넥팅로드의 제2연결부(8c)가 상기 피스톤의 삽입홈(7a)에 삽입되어 소단부(8e)와 핀삽입공(7b)을 일치시킨 상태에서 피스톤핀(15)을 삽입하여 결합된다.The piston 7 is formed in an annular rod shape having a predetermined length, and an insertion groove 7a is formed to insert the second connection portion 8c of the connecting rod at a predetermined depth at one end thereof. A pin insertion hole 7b is formed on one side outer circumferential surface of the round bar shape so as to penetrate perpendicularly to 7a. And the second connecting portion (8c) of the connecting rod is inserted into the insertion groove (7a) of the piston is inserted and engaged by inserting the piston pin (15) in the state in which the small end (8e) and the pin insertion hole (7b) do.

상기한 바와 같이 컨넥팅로드(8)가 크랭크축의 편심부(5b)와 피스톤(7)을 연결하여 크랭크축(5)의 회전운동을 직선운동으로 변환시켜 피스톤(7)을 실린더(6a)내에서 왕복운동하면서 가스를 흡입,압축하여 토출시키게 된다. 이 과정에서 피스톤(7)이 큰 압축하중을 받게 되고 이로 인하여 피스톤(7) 및 이와 함께 슬라이딩되는 부분에 충분한 오일이 공급되어야 한다.As described above, the connecting rod 8 connects the eccentric portion 5b of the crankshaft and the piston 7 to convert the rotational movement of the crankshaft 5 into linear movement, thereby converting the piston 7 into the cylinder 6a. In the reciprocating motion in the gas is sucked, compressed and discharged. In this process, the piston 7 is subjected to a large compressive load so that sufficient oil must be supplied to the piston 7 and the part sliding with it.

그러나 상기 컨넥팅로드(8)와 피스톤(7)이 연결되는 부분에 오일이 공급되는 것은 크랭크축(5)이 회전함에 의해 밀폐용기(1)의 저면에 채워진 오일이 크랭크축(5)내부에 형성된 오일유로(5a) 및 오일그루브(G)를 통해 흡상되어 크랭크축(5) 단부 및 슬리이브(14)를 통해 비산됨에 의해 컨넥팅로드(8)의 단부에 오일이 떨어져 오일이 공급됨으로써 컨넥팅로드(8) 및 이에 연결,결합되는 피스톤핀(15)에 충분한 오일이 공급되지 않아 부품의 마모를 발생시키는 문제점이 있었다.However, the oil is supplied to the connecting rod 8 and the piston 7 is connected to the oil is filled in the bottom surface of the sealed container (1) by the crank shaft 5 is rotated in the crank shaft (5) The oil is sucked through the oil flow path 5a and the oil groove G formed and scattered through the crankshaft 5 end and the sleeve 14 so that the oil is supplied to the end of the connecting rod 8 so that the oil is supplied. Not enough oil is supplied to the necking rod 8 and the piston pin 15 connected and coupled thereto, causing a problem of wear of the parts.

따라서, 본 발명의 목적은 컨넥팅로드 및 이에 연결,결합되는 피스톤핀에 오일이 충분히 공급될 수 있도록 한 밀폐형 전동식 압축기의 피스톤 오일공급구조를 제공함에 있다.Accordingly, an object of the present invention is to provide a piston oil supply structure of a hermetic electric compressor to allow sufficient oil to be supplied to a connecting rod and a piston pin connected and coupled thereto.

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 밀폐형 전동식 압축기의 피스톤 오일공급구조를 도시한 단면도,2 is a cross-sectional view showing a piston oil supply structure of a conventional hermetic electric compressor;

도 3은 본 발명의 밀폐형 전동식 압축기의 피스톤 오일공급구조가 구비된 압축기의 단면도,3 is a cross-sectional view of a compressor equipped with a piston oil supply structure of the hermetic electric compressor of the present invention;

도 4는 본 발명의 밀폐형 전동식 압축기의 피스톤 오일공급구조를 도시한 단면도.Figure 4 is a sectional view showing a piston oil supply structure of the hermetic electric compressor of the present invention.

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

5 ; 크랭크축 5a ; 오일유로5; Crankshaft 5a; Oil euro

5b ; 편심부 6a ; 실린더5b; Eccentric 6a; cylinder

6c ; 오일저장홈 7 ; 피스톤6c; Oil storage groove 7; piston

7b ; 핀삽입홈 7c ; 오일유입홈7b; Pin insertion groove 7c; Oil Inlet Groove

8 ; 컨넥팅로드 14 ; 슬리이브8 ; Connecting rod 14; Sleeve

15 ; 피스톤핀15; Piston pin

상기한 바와 같은 본 발명의 목적을 달성하기 위하여 실린더에 삽입되는 피스톤에 컨넥팅로드의 일측이 삽입되어 피스톤핀에 의해 결합되고, 컨넥팅로드의 타측에 슬리이브가 결합되어 내부에 오일이 흡상되는 오일유로가 형성된 크랭크축의 편심부에 결합되어, 크랭크축의 회전운동이 컨넥팅로드에 의해 직선운동으로 변환되어 피스톤을 실린더내에서 왕복운동시킴에 의해 가스를 흡입,압축시켜 토출시키는 밀폐형 전동식 압축기에 있어서; 상기 실린더의 일측 단부에 상기 크랭크축의 오일유로를 통해 흡상하여 비산된 오일이 떨어져 고이도록 하는 오일저장홈이 형성되고, 상기 피스톤이 하사점에 이르렀을 때 상기 오일저장홈과 연통됨과 더불어 컨넥팅로드와 연결되는 부분에 오일이 유입되도록 피스톤에 오일유입홈이 형성됨을 특징으로 하는 밀폐형 전동식 압축기의 피스톤 오일공급구조가 제공된다.In order to achieve the object of the present invention as described above one side of the connecting rod is inserted into the piston is inserted into the cylinder is coupled by the piston pin, the sleeve is coupled to the other side of the connecting rod to suck the oil inside In the hermetic electric compressor coupled to the eccentric portion of the crankshaft in which the oil flow path is formed, the rotational movement of the crankshaft is converted into a linear motion by the connecting rod to suck, compress and discharge gas by reciprocating the piston in the cylinder. ; An oil storage groove is formed at one end of the cylinder through the oil flow path of the crankshaft so that the oil splashes off and accumulates, and when the piston reaches the bottom dead center, the oil storage groove communicates with the oil storage groove. Piston oil supply structure of the hermetic electric compressor is provided, characterized in that the oil inlet groove is formed in the piston so that oil is introduced into the portion connected to the.

상기 오일유입홈은 피스톤과 컨넥팅로드을 연결하는 피스톤핀의 측부에 위치하도록 피스톤에 형성됨을 특징으로 하는 밀폐형 전동식 압축기의 피스톤 오일공급구조가 제공된다.The oil inlet groove is provided in the piston oil supply structure of the hermetic electric compressor, characterized in that formed in the piston to be located on the side of the piston pin connecting the piston and the connecting rod.

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

본 발명의 밀폐형 전동식 압축기의 피스톤 오일공급구조는, 도 3에 도시한 바와 같이, 실린더(6a)에 삽입되는 피스톤(7)에 컨넥팅로드(8)의 일측이 삽입되어 피스톤핀(15)에 의해 결합되고, 컨넥팅로드(8)의 타측에 슬리이브(14)가 결합되어 내부에 오일이 흡상되는 오일유로(5a)가 형성된 크랭크축의 편심부(5b)에 결합되어, 크랭크축(5)의 회전운동이 컨넥팅로드(8)에 의해 직선운동으로 변환되어 피스톤(7)을 실린더(6a)내에서 왕복운동시킴에 의해 가스를 흡입하여 압축하고 토출시키는 것은 종래와 같다.In the piston oil supply structure of the hermetic electric compressor of the present invention, as shown in FIG. 3, one side of the connecting rod 8 is inserted into the piston 7 inserted into the cylinder 6a to the piston pin 15. Coupled to the other side of the connecting rod 8, the sleeve 14 is coupled to the eccentric portion 5b of the crank shaft formed with an oil flow path 5a in which oil is sucked inside, the crank shaft 5 The rotational motion of the gas is converted into linear motion by the connecting rod 8, and the piston 7 sucks, compresses and discharges the gas by reciprocating the motion in the cylinder 6a.

그리고, 도 4에 도시한 바와 같이, 상기 실린더(6a)의 일측 단부에 상기 크랭크축의 오일유로(5a)를 통해 흡상하여 비산된 오일이 떨어져 고이도록 하는 오일저장홈(6c)이 형성되고, 상기 피스톤(7)이 하사점에 이르렀을 때 상기 오일저장홈(6c)과 연통됨과 더불어 컨넥팅로드(8)와 연결되는 부분에 오일이 유입되도록 피스톤(7)에 오일유입홈(7c)이 형성되어 이루어진다.And, as shown in Figure 4, at one end of the cylinder (6a) is formed through the oil passage (5a) of the crankshaft oil storage groove (6c) is formed so that the oil is scattered and scattered apart, When the piston 7 reaches the bottom dead center, the oil inflow groove 7c is formed in the piston 7 so that the oil communicates with the oil storage groove 6c and oil flows into a portion connected to the connecting rod 8. It is done.

상기 오일저장홈(6c)은 실린더의 상측에 소정의 크기로 형성되며, 실린더(6a)를 이루는 내부공간과 관통되도록 형성된다.The oil storage groove 6c is formed in a predetermined size on the upper side of the cylinder, and is formed to penetrate through the internal space constituting the cylinder 6a.

상기 오일유입홈(7c)은 피스톤(7)과 컨넥팅로드(8)을 연결하는 피스톤핀(15)이 삽입되는 핀삽입공(7b)과 연통되도록 핀삽입공(7b)의 측부에 위치하도록 피스톤(7)에 형성됨이 바람직하다.The oil inlet groove 7c is positioned at the side of the pin insertion hole 7b so as to communicate with the pin insertion hole 7b into which the piston pin 15 connecting the piston 7 and the connecting rod 8 is inserted. It is preferably formed in the piston 7.

이하, 본 발명의 밀폐형 전동식 압축기의 피스톤 오일공급구조의 작용효과를 설명하면 다음과 같다.Hereinafter, the operational effects of the piston oil supply structure of the hermetic electric compressor of the present invention will be described.

본 발명의 피스톤 오일공급구조는 크랭크축(5)이 회전함에 의해 밀폐용기(1)의 저면에 채워진 오일이 크랭크축(5)의 내부에 형성된 오일유로(5a)를 통해 흡상하여 크랭크축의 편심부(5b)를 통해 비산된다. 이 비산된 오일의 일부는 오일저장홈(6c)에 떨어져 고이게 되고 이 오일저장홈(6c)에 저장된 오일은 피스톤(7)에 공급됨과 더불어 오일유입홈(7c)에 유입되며, 이 과정은 다음과 같다. 상기 크랭크축(5)의 회전에 의해 이에 결합된 컨넥팅로드(8)가 피스톤(7)을 왕복운동시키게 되며 이 피스톤(7)이 하사점이 위치할 때 오일저장홈(6c)에 고인 오일이 피스톤(7)의 일측에 형성된 오일유입홈(7c)에 유입된다. 이 유입된 오일은 피스톤(7)의 외주면에 공급됨은 물론 피스톤핀(15)이 결합된 핀삽입공(7b)으로 충분히 유입되어 피스톤핀(15)과 접촉되는 컨넥팅로드의 소단부(8e)와 피스톤의 핀삽입공(7b)사이에서 윤활작용을 하게 된다.In the piston oil supply structure of the present invention, the oil filled in the bottom surface of the sealed container 1 as the crank shaft 5 rotates is sucked up through the oil passage 5a formed in the crank shaft 5, and the eccentric portion of the crank shaft is rotated. Scattered through (5b). A part of this scattered oil is accumulated in the oil storage groove (6c) and the oil stored in the oil storage groove (6c) is supplied to the piston (7) and flows into the oil inflow groove (7c), this process is Same as The connecting rod 8 coupled thereto by the rotation of the crankshaft 5 causes the piston 7 to reciprocate and oil accumulated in the oil storage groove 6c when the piston 7 is located at the bottom dead center. It flows into the oil inflow groove (7c) formed on one side of the piston (7). This introduced oil is supplied to the outer circumferential surface of the piston (7) as well as the small end (8e) of the connecting rod that is sufficiently introduced into the pin insertion hole (7b) to which the piston pin (15) is coupled to contact the piston pin (15). And lubrication between the pin insertion hole (7b) of the piston.

이상에서 설명한 바와 같이, 본 발명에 의한 밀폐형 전동식 압축기의 피스톤 오일공급구조는 가스를 흡입하고 압축하여 토출시키는 압축기구부에서 압축하중을 많이 받으며 슬라이딩이 이루어지는 피스톤 및 이에 결합되는 컨넥팅로드에 충분한 오일이 공급되도록 함으로써 슬라이딩부분의 마모를 감소시켜 부품의 수명을 연장시킬 수 있는 효과가 있다.As described above, the piston oil supply structure of the hermetic electric compressor according to the present invention receives a lot of compressive load from the compression mechanism portion for sucking, compressing and discharging gas, and the oil having a sufficient sliding pressure and a connecting rod coupled thereto are provided. By supplying, it is possible to reduce the wear of the sliding portion to extend the life of the part.

Claims (2)

실린더에 삽입되는 피스톤에 컨넥팅로드의 일측이 삽입되어 피스톤핀에 의해 결합되고, 컨넥팅로드의 타측에 슬리이브가 결합되어 내부에 오일이 흡상되는 오일유로가 형성된 크랭크축의 편심부에 결합되어, 크랭크축의 회전운동이 컨넥팅로드에 의해 직선운동으로 변환되어 피스톤을 실린더내에서 왕복운동시킴에 의해 가스를 흡입,압축시켜 토출시키는 밀폐형 전동식 압축기에 있어서; 상기 실린더의 일측 단부에 상기 크랭크축의 오일유로를 통해 흡상하여 비산된 오일이 떨어져 고이도록 하는 오일저장홈이 형성되고, 상기 피스톤이 하사점에 이르렀을 때 상기 오일저장홈과 연통됨과 더불어 컨넥팅로드와 연결되는 부분에 오일이 유입되도록 피스톤에 오일유입홈이 형성됨을 특징으로 하는 밀폐형 전동식 압축기의 피스톤 오일공급구조.One side of the connecting rod is inserted into the piston to be inserted into the cylinder and is coupled by the piston pin, and the other side of the connecting rod is coupled to the eccentric portion of the crankshaft formed with an oil flow path where oil is sucked inside. A hermetic electric compressor in which a rotational movement of a crankshaft is converted into a linear motion by a connecting rod to suck, compress and discharge gas by reciprocating a piston in a cylinder; An oil storage groove is formed at one end of the cylinder through the oil flow path of the crankshaft so that the oil splashes off and accumulates, and when the piston reaches the bottom dead center, the oil storage groove communicates with the oil storage groove. Piston oil supply structure of the hermetic electric compressor, characterized in that the oil inlet groove is formed in the piston so that oil is introduced into the portion connected to the. 제1항에 있어서, 상기 오일유입홈은 피스톤과 컨넥팅로드을 연결하는 피스톤핀이 삽입되는 핀삽입공과 연통되도록 피스톤에 형성됨을 특징으로 하는 밀폐형 전동식 압축기의 피스톤 오일공급구조.The piston oil supply structure of claim 1, wherein the oil inlet groove is formed in the piston so as to communicate with a pin insertion hole into which the piston pin connecting the piston and the connecting rod is inserted.
KR1019970055623A 1997-10-28 1997-10-28 Piston oil supplying structure of an enclosed type compressor KR100246404B1 (en)

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KR101366564B1 (en) * 2007-07-16 2014-02-25 삼성전자주식회사 Hermetic type compressor
KR101452514B1 (en) * 2008-12-03 2014-10-21 엘지전자 주식회사 Hermetic compressor

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KR100816832B1 (en) * 2001-11-26 2008-03-26 주식회사 엘지이아이 Rotating portion for hermetic compressor
KR100871131B1 (en) * 2002-12-31 2008-12-03 엘지전자 주식회사 Connecting structure of crank-shaft and connecting-rod for hermetic compressor
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