KR100214663B1 - An oil emitting structure of a scroll compressor - Google Patents

An oil emitting structure of a scroll compressor Download PDF

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Publication number
KR100214663B1
KR100214663B1 KR1019970034835A KR19970034835A KR100214663B1 KR 100214663 B1 KR100214663 B1 KR 100214663B1 KR 1019970034835 A KR1019970034835 A KR 1019970034835A KR 19970034835 A KR19970034835 A KR 19970034835A KR 100214663 B1 KR100214663 B1 KR 100214663B1
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South Korea
Prior art keywords
oil
scroll compressor
drainage structure
scroll
oil drain
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KR1019970034835A
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Korean (ko)
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KR19990011654A (en
Inventor
김성춘
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구자홍
엘지전자주식회사
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Priority to KR1019970034835A priority Critical patent/KR100214663B1/en
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    • 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
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving
    • 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
    • F04C29/0092—Removing solid or liquid contaminants from the gas under pumping, e.g. by filtering or deposition; Purging; Scrubbing; Cleaning
    • 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
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/023—Lubricant distribution through a hollow driving shaft
    • 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
    • F04C2240/00—Components
    • F04C2240/60—Shafts
    • F04C2240/603—Shafts with internal channels for fluid distribution, e.g. hollow shaft
    • 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
    • F04C2240/00—Components
    • F04C2240/70—Use of multiplicity of similar components; Modular construction
    • 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
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/806—Pipes for fluids; Fittings therefor
    • 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
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/807—Balance weight, counterweight

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

본 발명은 스크롤 압축기의 배유구조에 관한 것으로, 종래에는 슬라이딩되는 부품에 공급된 오일이 배유관을 통해 배유될 때 배유관에서 떨어지는 오일이 그 하부에 위치하는 밸런스웨이트의 회전에 의한 와류 형성으로 밀폐용기내부의 냉매가스에 오일이 섞이는 교반현상이 발생하여 효율을 저하시키고, 또한 배유구조가 복잡하여 조립작업이 불편한 문제점이 있었는 바, 본 발명은 배유되는 오일이 밀폐용기의 내주면을 따라 흘러 배유되도록 하여 밸런스웨이트의 회전에 의해 형성되는 와류에 의해 냉매가스에 오일이 섞이는 교반현상을 억제함으로써 냉매가스에 섞이는 오일을 최소화하여 효율을 향상시고, 또한 구조를 간소화하여 부품수를 줄이고 조립공정을 수월하게 할 수 있도록 한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil drainage structure of a scroll compressor. In the related art, when oil supplied to a sliding part is drained through an oil drain pipe, the oil falling from the oil drain pipe is closed by vortex formation due to rotation of a balance weight positioned below it. There was a problem in that the mixing of the oil is mixed with the refrigerant gas inside the container to reduce the efficiency, and also the complicated structure of the drainage structure has a problem that the assembly operation is inconvenient, the present invention is so that the oil to be drained flows along the inner peripheral surface of the sealed container By minimizing the oil mixing in the refrigerant gas by the vortex formed by the rotation of the balance weight, the oil mixed in the refrigerant gas is minimized to improve efficiency, and the structure is simplified to reduce the number of parts and facilitate the assembly process. It is to be done.

Description

스크롤 압축기의 배유구조Drainage Structure of Scroll Compressor

본 발명은 스크롤 압축기의 배유구조에 관한 것으로, 특히 슬라이딩되는 부품에 오일이 공급되고 이 공급된 오일이 배유되면서 발생되는 교반현상을 방지할 뿐만 아니라 구조를 간소화할 수 있도록 한 스크롤 압축기의 배유구조에 관한 것이다.The present invention relates to an oil drainage structure of a scroll compressor, and more particularly, to an oil drainage structure of a scroll compressor, in which oil is supplied to a sliding part and oil supply is supplied to the sliding part to prevent agitation. It is about.

일반적인 스크롤압축기는, 도 1에 도시한 바와 같이, 본체를 이루며 내부가 밀폐된 밀폐용기(1)와, 상기 밀폐용기(1)의 내부 상측으로 상부프레임(2)이 결합되어 있고, 상기 밀폐용기(1) 내부 하측으로 하부프레임(3)이 결합되어 있으며, 상기 상부프레임(2)과 하부프레임(3)의 사이에 모터를 이루는 고정자(4) 및 회전자(5)가 설치되어 있다. 그리고 상기 회전자(5)의 중심에 회전자(5)의 회전에 따라 함께 회전하는 크랭크축(6)이 결합되어 있으며, 상기 상부프레임(2)에 고정스크롤(7)이 고정되어 있고, 상기 고정스크롤(7)의 하부에 선회스크롤(8)이 선회가능하도록 맞물려 있으며, 상기 고정스크롤(7)의 하부는 상기 크랭크축(6)에 결합되어 있다. 그리고 상기 선회스크롤(8)의 하부에는 선회스크롤(8)의 자전을 방지하는 자전방지기구(9)가 결합되어 있다. 또한 상기 회전자(5)의 상부에는 회전자(5)의 회전시 회전메스(mass)의 균형을 맞추기 위하여 밸런스웨이트(10)가 결합되어 있다.The general scroll compressor, as shown in Figure 1, forms a main body and sealed inside the sealed container (1), the upper frame (2) is coupled to the upper side of the sealed container (1), the sealed container (1) The lower frame 3 is coupled to the lower side inside, and a stator 4 and a rotor 5 forming a motor are installed between the upper frame 2 and the lower frame 3. And the crankshaft 6 which is rotated together in accordance with the rotation of the rotor (5) is coupled to the center of the rotor (5), the fixed scroll (7) is fixed to the upper frame (2), The pivoting scroll 8 is pivotally engaged to the lower portion of the fixed scroll 7, and the lower portion of the fixed scroll 7 is coupled to the crankshaft 6. And the lower portion of the rotating scroll (8) is coupled to the anti-rotation mechanism 9 for preventing the rotation of the rotating scroll (8). In addition, the balance weight 10 is coupled to the upper portion of the rotor 5 in order to balance the rotating mass during the rotation of the rotor 5.

그리고 상기 밀폐용기(1)의 하부에는 슬라이딩되는 부분에 공급되는 오일이 채워져 있고, 상기 밀폐용기(1)의 측부에는 냉매가스가 흡입되는 흡입관(11)이 형성되어 있으며, 상기 고정스크롤(7)에는 토출포트(7a)가 형성되어 있다.And the lower part of the sealed container (1) is filled with the oil supplied to the sliding portion, the side of the sealed container (1) is formed with a suction pipe (11) for sucking the refrigerant gas, the fixed scroll (7) The discharge port 7a is formed in this.

상기한 바와 같은 각 구성부품을 포함하여 구성된 스크롤 압축기의 작동은 먼저, 인가되는 전류에 의해 회전자(5)가 회전하게 되면 회전자(5)의 회전에 의해 크랭크축(6)이 회전하면서 크랭크축(6)의 편심된 거리를 반지름으로 하여 선회스크롤(8)을 원운동,즉 공전운동시키게 된다. 상기 선회스크롤(8)은 자전방지기구(9)에 의해 자전이 방지되면서 축 중심을 원점으로 하여 선회반경 만큼 떨어진 거리에서 선회원을 그리며 선회운동하게 된다. 상기 선회스크롤(8)의 선회운동에 의해 고정스크롤(7)과 선회스크롤(8)사이에 압축공간인 포켓이 형성되며 이 포켓은 지속되는 선회운동에 의해 중심으로 이동하면서 체적이 감소되어 흡입되는 냉매가스를 압축하여 토출포트(7a)를 통해 토출시키게 된다.Operation of the scroll compressor including each component as described above, first, when the rotor 5 is rotated by the applied current, the crank shaft 6 is rotated by the rotation of the rotor 5 crank With the eccentric distance of the shaft 6 as the radius, the orbiting scroll 8 is circular, i.e. orbital. The pivoting scroll 8 is pivoted by drawing the member at a distance as far as the turning radius while the rotation is prevented by the rotation preventing mechanism 9 as the origin of the axis. Due to the swinging movement of the swinging scroll (8), a pocket, which is a compression space, is formed between the fixed scroll (7) and the swinging scroll (8). The refrigerant gas is compressed and discharged through the discharge port 7a.

한편, 상기 밀폐용기(1)의 하부에 있는 오일은 냉매가스를 압축하는 과정에서 부품간 슬라이딩되는 부분에 부품의 마모를 방지하고 작동을 원활하게 하기 위하여 공급된다. 상기 오일이 공급되는 구조는 오일에 잠겨 있는 크랭크축(6)의 회전과 더불어 크랭크축(6)의 하단부에 결합된 오일펌프(12)의 펌핑에 의해 오일이 크랭크축(6)내에 형성된 오일유로(6a)를 타고 상승된다. 이 상승된 오일은 크랭크축(6)의 상단부로 배출된 후 상부프레임(2)과 선회스크롤(8) 그리고 크랭크축(6) 등의 슬라이딩부분에 공급되며, 이 공급된 오일은 배유구조를 통해 하부로 흘러 밀폐용기(1)의 저면에 채워진 오일로 복귀된다. 이 복귀된 오일은 위와 같은 과정을 반복하여 순환된다.On the other hand, the oil in the lower portion of the hermetic container (1) is supplied in order to prevent the wear of the parts and smooth operation to the sliding parts between parts in the process of compressing the refrigerant gas. The structure in which the oil is supplied is an oil flow path in which oil is formed in the crankshaft 6 by the pumping of the oil pump 12 coupled to the lower end of the crankshaft 6 together with the rotation of the crankshaft 6 immersed in the oil. Ascend by 6a. This raised oil is discharged to the upper end of the crankshaft (6) and then supplied to the sliding parts of the upper frame (2), the turning scroll (8) and the crankshaft (6), and the supplied oil is supplied through an oil drainage structure. It flows to the bottom and returns to the oil filled in the bottom of the airtight container 1. This returned oil is circulated by repeating the above process.

한편, 상기 슬라이딩되는 부분에 공급된 오일이 배유되는 종래의 배유구조는, 도 2에 도시한 바와 같이, 상기 상부프레임(2)의 중심에 소정의 직경과 폭으로 선회스크롤(8)의 보스부(8a)가 삽입되는 보스공간부(S)가 형성되고, 상기 보스공간부(S)의 하측부에 관통된 배유공(2a)이 형성되어 있으며, 상기 배유공(2a)에 연통되게 절곡된 배유관(13)이 결합되어 있다. 상기 배유구조는 슬라이딩되는 부분에 공급된 오일이 보스공간부(S)로 유입됨과 함께 배유공(2a)과 배유관(13)을 통해 배유되며 이 배유된 오일은 하부로 흘러 밀폐용기(1)의 내주면과 상기 고정자(4)사이를 통해 밀폐용기(1)의 저면으로 흐르게 된다.On the other hand, the conventional drainage structure in which the oil supplied to the sliding portion is drained, as shown in Figure 2, the boss portion of the turning scroll (8) with a predetermined diameter and width in the center of the upper frame (2) A boss space portion S into which the 8a is inserted is formed, and an oil drain hole 2a penetrated under the boss space portion S is formed, and is bent to communicate with the oil drain hole 2a. Drain pipe 13 is coupled. The oil drainage structure is provided with the oil supplied to the sliding portion into the boss space portion (S) and drained through the oil drain hole (2a) and the oil drain pipe (13), and the oil drained flows downward to the sealed container (1). Between the inner circumferential surface and the stator (4) is to flow to the bottom of the sealed container (1).

그러나 상기한 바와 같은 종래의 배유구조는, 슬라이딩되는 부품에 공급된 오일이 배유관(13)을 통해 배유될 때 배유관(13)에서 떨어지는 오일이 그 하부에 위치하는 밸런스웨이트(10)의 회전에 의한 와류 형성으로 밀폐용기(1)내부의 냉매가스에 오일이 섞이는 교반현상이 발생하여 효율을 저하시키는 문제점이 있었다. 또한 배유구조가 복잡하여 조립작업이 불편한 단점이 있었다.However, in the conventional oil drainage structure as described above, when the oil supplied to the sliding part is drained through the oil drainage pipe 13, the oil falling from the oil drainage pipe 13 is rotated at the lower portion of the balance weight 10. Due to the formation of vortices, the stirring phenomenon occurs in which oil is mixed with the refrigerant gas inside the sealed container 1, thereby reducing the efficiency. In addition, there is a disadvantage that the assembly operation is inconvenient due to the complicated drainage structure.

따라서, 본 발명의 목적은 오일이 배유되면서 발생되는 교반현상을 방지할 뿐만 아니라 구조를 간소화할 수 있도록 한 스크롤 압축기의 배유구조를 제공함에 있다.Accordingly, an object of the present invention is to provide an oil drainage structure of a scroll compressor to simplify the structure as well as to prevent agitation caused by oil draining.

도 1은 일반적인 스크롤 압축기의 일예를 도시한 종단면도,1 is a longitudinal sectional view showing an example of a general scroll compressor;

도 2는 종래 스크롤 압축기의 배유구조를 도시한 단면도,2 is a cross-sectional view showing an oil drainage structure of a conventional scroll compressor;

도 3a는 본 발명의 스크롤 압축기 배유구조를 도시한 단면도,Figure 3a is a cross-sectional view showing a scroll compressor oil distribution structure of the present invention,

도 3b는 본 발명의 스크롤 압축기 배유구조를 도시한 정면도,Figure 3b is a front view showing a scroll compressor oil distribution structure of the present invention,

도 4는 본 발명의 배유구조가 적용된 스크롤 압축기를 도시한 종단면도.Figure 4 is a longitudinal sectional view showing a scroll compressor to which the oil distribution structure of the present invention is applied.

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

1 ; 밀폐용기 2 ; 상부프레임One ; Airtight container 2; Upper frame

2b ; 배유홈 2c ; 배유구멍2b; Drain groove 2c; Drainage hole

4 ; 고정자 4a ; 카트부4 ; Stator 4a; Cart

8 ; 선회스크롤 8a ; 보스부8 ; Turning scroll 8a; Boss

S ; 보스공간부S; Boss Space Department

상기한 바와 같은 본 발명의 목적을 달성하기 위하여 밀폐용기의 상부에 설치되는 상부프레임의 가운데 선회스크롤의 보스부가 삽입되는 보스공간부가 형성되고, 상기 상부프레임의 외주면에 소정의 폭과 깊이는 갖도록 축방향으로 배유홈이 형성되며, 상기 보스공간부와 상기 배유홈을 관통하는 배유구멍이 형성되어 이루어짐을 특징으로 하는 스크롤 압축기의 배유구조가 제공된다.In order to achieve the object of the present invention as described above, a boss space portion into which the boss portion of the pivoting scroll is inserted is formed in the middle of the upper frame installed on the upper portion of the sealed container, and the shaft has a predetermined width and depth on the outer circumferential surface of the upper frame. A drainage groove is formed in a direction, and an oil drainage structure of the scroll compressor is provided, wherein an oil drain hole penetrating the boss space portion and the oil drain groove is formed.

상기 배유홈은 상측이 막히고 하부가 관통되도록 형성됨을 특징으로 하는 스크롤 압축기의 배유구조가 제공된다.The oil drain groove is provided with an oil drainage structure of the scroll compressor, characterized in that the upper side is blocked and formed so that the lower portion penetrates.

상기 배유홈의 배면은 단부가 밀폐용기측으로 경사지게 형성됨을 특징으로 하는 스크롤 압축기의 배유구조가 제공된다.The rear surface of the oil drain groove is provided with an oil drainage structure of the scroll compressor, characterized in that the end is formed to be inclined toward the sealed container side.

상기 배유홈은 배유된 오일이 하부로 흐를 수 있도록 고정자에 소정의 폭과 깊이로 형성된 카트부의 상측에 위치하도록 형성됨을 특징으로 하는 스크롤 압축기의 배유구조가 제공된다.The oil drain groove is provided with an oil drainage structure of the scroll compressor, characterized in that formed on the upper side of the cart portion having a predetermined width and depth in the stator so that the oil drained flows downward.

이하, 본 발명의 스크롤 압축기의 배유구조를 첨부도면에 도시한 실시예에 따라 설명하면 다음과 같다.Hereinafter, the oil drainage structure of the scroll compressor of the present invention will be described according to the embodiment shown in the accompanying drawings.

본 발명의 스크롤 압축기의 배유구조는, 도 3a, 3b에 도시한 바와 같이, 밀폐용기(1)의 상부에 설치되는 상부프레임(2)의 가운데 선회스크롤의 보스부(8a)가 삽입되는 보스공간부(S)가 형성되고, 상기 상부프레임(2)의 외주면에 소정의 폭과 깊이는 갖도록 축방향으로 배유홈(2b)이 형성되며, 상기 보스공간부(S)와 상기 배유홈(2b)을 관통하는 배유구멍(2c)이 형성되어 이루어진다.As shown in FIGS. 3A and 3B, the oil drainage structure of the scroll compressor of the present invention is a boss space into which the boss portion 8a of the revolving scroll is inserted in the middle of the upper frame 2 installed at the upper portion of the sealed container 1. A portion S is formed, and an oil drain groove 2b is formed in the axial direction so as to have a predetermined width and depth on the outer circumferential surface of the upper frame 2, and the boss space portion S and the oil drain groove 2b. The drainage hole 2c which penetrates through is formed.

상기 상부프레임(2)에 형성되는 보스공간부(S)는 단면이 원형으로 형성되며 소정의 깊이를 갖도록 형성된다. 그리고 상기 보스공간부(S)에 이어 상기 크랭크축(6)이 삽입되는 축삽입공(2d)이 형성되어 있다. 상기 보스공간부(S)의 직경은 상기 선회스크롤 보스부(8a)가 삽입되어 선회할 수 있도록 여유공간을 갖는 크기로 형성된다. 상기 배유구멍(2c)은 보스공간부(S)의 하부에 위치하도록 형성된다.The boss space portion S formed in the upper frame 2 has a circular cross section and is formed to have a predetermined depth. The shaft insertion hole 2d into which the crankshaft 6 is inserted is formed after the boss space S. The diameter of the boss space portion (S) is formed to have a size having a free space so that the swing scroll boss portion (8a) is inserted into the swing. The drainage hole 2c is formed to be located below the boss space S.

상기 배유홈(2b)은, 도 3b에 도시한 바와 같이, 상측이 막히고 하부가 관통되도록 형성된다. 그리고 상기 배유홈(2b)의 배면은 단부가 밀폐용기(1)측으로 경사지게 형성된다.As shown in FIG. 3B, the drain groove 2b is formed such that the upper side is blocked and the lower portion penetrates. And the rear surface of the drain groove (2b) is formed with the end inclined toward the closed container (1) side.

또한, 상기 배유홈(2b)의 위치는 배유된 오일이 하부로 흐를 수 있도록 고정자(4)에 소정의 폭과 깊이로 형성된 카트부(4a)의 상측에 위치하도록 형성된다.In addition, the position of the drain groove 2b is formed to be located above the cart portion 4a formed at a predetermined width and depth in the stator 4 so that the drained oil can flow downward.

상기 밀폐용기(1)의 내주면과 상부프레임(2)의 외주면은 서로 접촉되도록 결합되며, 상기 보스공간부(S)에는 선회스크롤의 보스부(8a)가 삽입되고 축삽입공(2d)에는 크랭크축(6)이 삽입됨과 더불어 크랭크축(6)의 단부가 선회스크롤의 보스부(8a)에 삽입되어 결합된다.The inner circumferential surface of the hermetic container 1 and the outer circumferential surface of the upper frame 2 are coupled to be in contact with each other, the boss portion 8a of the turning scroll is inserted into the boss space portion S, and the crank is inserted into the shaft insertion hole 2d. In addition to the shaft 6 being inserted, the end of the crank shaft 6 is inserted into the boss portion 8a of the revolving scroll and engaged.

이하, 본 발명의 스크롤 압축기 배유구조의 작용효과를 설명하면 다음과 같다.Hereinafter, the operation and effect of the scroll compressor oil drainage structure of the present invention will be described.

먼저, 모터의 구동에 의해 크랭크축(6)이 회전함과 더불어 오일펌프(12)가 작동함에 따라 오일이 크랭크축의 오일유로(6a)를 통해 상승하여 슬라이딩되는 부품에 공급된 다음, 이 공급된 오일이 보스공간부(S)로 유입된다. 그리고 보스공간부(S)로 유입된 오일이 일정량 고이게 되면 오일은 배유구멍(2c) 및 배유홈(2b)을 따라 흘러 배유되며, 이 배유된 오일은 밀폐용기(1)의 내주면을 따라 흐르고, 이어 고정자(40의 카트부(4a)를 통해 밀폐용기(1)의 저면에 채워진 오일로 유입된다.First, as the crankshaft 6 is rotated by the driving of the motor and the oil pump 12 is operated, oil is supplied to the component that rises and slides through the oil passage 6a of the crankshaft. Oil flows into the boss space (S). And when the oil introduced into the boss space (S) is a certain amount of high oil flows along the drainage hole (2c) and the drainage groove (2b), the drained oil flows along the inner peripheral surface of the sealed container (1), Then through the cart portion 4a of the stator 40 flows into the oil filled in the bottom surface of the sealed container (1).

상기 보스공간부(S)에서 배유구멍(2c)을 통해 흐르는 오일이 배유홈(2b)을 통해 밀폐용기(1)의 내주면을 따라 흐르게 됨으로 밸런스웨이트(10)의 회전으로 인하여 발생되는 와류에 의해 냉매가스에 오일이 섞이는 것을 최소화하게 된다.The oil flowing through the oil drain hole 2c in the boss space S flows along the inner circumferential surface of the airtight container 1 through the oil drain groove 2b, and is caused by the vortex generated by the rotation of the balance weight 10. The mixing of oil in the refrigerant gas is minimized.

또한, 종래에 결합되던 배유관을 제거하게 됨으로 결합되는 부품수가 감소될 뿐만 아니라 조립공정이 수월하게 된다.In addition, the number of parts to be coupled is reduced as well as the assembling process is facilitated by removing the drain pipe that is conventionally coupled.

이상에서 설명한 바와 같이, 본 발명에 의한 스크롤 압축기의 배유구조는 배유되는 오일이 밀폐용기의 내주면을 따라 흘러 배유되도록 하여 밸런스웨이트의 회전에 의해 형성되는 와류에 의해 냉매가스에 오일이 섞이는 교반현상을 억제함으로써 냉매가스에 섞이는 오일을 최소화하여 효율을 향상시킬 수 있는 효과가 있을 뿐만 아니라 구조를 간소화함으로써 부품수를 줄이고 조립공정을 수월하게 하여 생산성을 높일 수 있는 효과가 있다.As described above, the oil drainage structure of the scroll compressor according to the present invention allows the oil to be drained to flow along the inner circumferential surface of the sealed container, and thus the oil is mixed with the refrigerant gas by the vortex formed by the rotation of the balance weight. By suppressing, the oil mixed with the refrigerant gas is minimized to improve the efficiency, and the structure is simplified to reduce the number of parts and to facilitate the assembly process, thereby increasing productivity.

Claims (4)

밀폐용기내부에 설치되는 상부프레임의 가운데 선회스크롤의 보스부가 삽입되는 보스공간부가 형성되고, 상기 상부프레임의 외주면에 소정의 폭과 깊이를 갖도록 축방향으로 배유홈이 형성되며, 상기 보스공간부와 상기 배유홈을 관통하는 배유구멍이 형성되어 이루어짐을 특징으로 하는 스크롤 압축기의 배유구조.A boss space portion into which the boss portion of the swinging scroll is inserted is formed in the center of the upper frame installed in the sealed container, and an oil drain groove is formed in the axial direction to have a predetermined width and depth on the outer circumferential surface of the upper frame, and the boss space portion and An oil drainage structure of a scroll compressor, characterized in that the oil drain hole penetrating the oil drain groove is formed. 제1항에 있어서, 상기 배유홈은 상측이 막히고 하부가 관통되도록 형성됨을 특징으로 하는 스크롤 압축기의 배유구조.The structure of claim 1, wherein the drain groove is formed so that an upper portion thereof is blocked and a lower portion thereof penetrates. 제1항에 있어서, 상기 배유홈의 배면은 단부가 밀폐용기측으로 경사지게 형성됨을 특징으로 하는 스크롤 압축기의 배유구조.2. The oil drainage structure of the scroll compressor according to claim 1, wherein an end of the oil drain groove is formed to be inclined toward the sealed container. 제1항에 있어서, 상기 배유홈은 배유된 오일이 하부로 흐를 수 있도록 고정자에 소정의 폭과 깊이로 형성된 카트부의 상측에 위치하도록 형성됨을 특징으로 하는 스크롤 압축기의 배유구조.The oil drainage structure of claim 1, wherein the oil drain groove is formed to be located above the cart portion having a predetermined width and depth in the stator so that the oil drain flows downward.
KR1019970034835A 1997-07-25 1997-07-25 An oil emitting structure of a scroll compressor KR100214663B1 (en)

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