KR100208180B1 - Oil supplying structure of closed typed compressor - Google Patents

Oil supplying structure of closed typed compressor Download PDF

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Publication number
KR100208180B1
KR100208180B1 KR1019970001617A KR19970001617A KR100208180B1 KR 100208180 B1 KR100208180 B1 KR 100208180B1 KR 1019970001617 A KR1019970001617 A KR 1019970001617A KR 19970001617 A KR19970001617 A KR 19970001617A KR 100208180 B1 KR100208180 B1 KR 100208180B1
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South Korea
Prior art keywords
oil
compressor
oil pump
piston
hermetic compressor
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KR1019970001617A
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Korean (ko)
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KR19980066225A (en
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원성수
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구자홍
엘지전자주식회사
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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
    • F04B39/0261—Hermetic compressors with an auxiliary oil pump
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

본 발명은 밀폐형 압축기의 급유구조에 관한 것으로서, 특히 저속 회전시 충분한 급유량을 확보함으로써 기구부의 마모를 방지하도록 한 것이다.The present invention relates to a refueling structure of a hermetic compressor, and in particular, to prevent abrasion of the mechanism part by securing a sufficient oil supply amount at low speed rotation.

이러한 본 발명은 압축기의 저속운전시 오일을 강제흡입하여 마찰이 심한 기구부에 공급하도록 피스톤의 후진운동에 의한 잔여동력을 이용하는 오일펌프가 프레임면에 설치된 것이다.In the present invention, the oil pump using the residual power by the backward movement of the piston is installed on the frame surface to forcibly suck the oil during the low-speed operation of the compressor to supply to the mechanism of heavy friction.

Description

밀폐형 압축기의 급유구조Oil supply structure of hermetic compressor

본 발명은 밀폐형 압축기에 관한 것으로서, 특히 압축기의 저속 운전시 충분한 급유량을 확보함으로써 기구부의 마모를 방지하도록 한 밀폐형 압축기의 급유구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hermetic compressor, and more particularly, to an oil supply structure of a hermetic compressor to prevent abrasion of the mechanism part by securing sufficient oil supply during low speed operation of the compressor.

종래의 밀폐형 압축기는 도 1 에 도시된 바와 같이, 하부밀폐용기(1b)와 상부밀폐용기(1a)로 이루어진 압축기의 외관인 밀폐용기(1)내에 압축기구부와 이를 구동하는 전동기구부로 구성하였다.As shown in FIG. 1, the conventional hermetic compressor is composed of a compression mechanism part and an electric mechanism driving the same in the hermetic container 1 which is the exterior of the compressor including the lower hermetic container 1b and the upper hermetic container 1a.

상기 전동기구부는 프레임(2)에 볼트로 체결되어 전원이 인가되면 자력을 발생하는 고정자(3)와, 상기 고정자(3)의 자력에 의해 회전하는 회전자(4)와, 상기 회전자(4)에 압입되어 회전자(4)의 회전에 따라 회전자(4)와 같이 회전하는 중공의 크랭크축(5)으로 구성하였다.The electric machine part is fastened to the frame 2 by bolts, and when a power is applied, the stator 3 generates a magnetic force, the rotor 4 rotates by the magnetic force of the stator 3, and the rotor 4 ) And a hollow crankshaft (5) which is pressed into the rotor and rotates like the rotor (4) in accordance with the rotation of the rotor (4).

상기 압축기구부는 크랭크축(5)의 상부에 편심되게 형성된 편심부(6)와, 상기 편심부(6)에 결합되어 크랭크축(5)의 회전운동을 왕복운동으로 바꾸어주는 슬라이더(7)와, 상기 슬라이더(7)와 결합되는 피스톤(8)과, 상기 피스톤(8)이 왕복운동을 할 수 있도록 프레임(2)에 볼트로 체결되어진 실린더(9)로 구성하였다.The compressor mechanism includes an eccentric portion 6 formed eccentrically on top of the crank shaft 5, a slider 7 coupled to the eccentric portion 6 to change the rotational movement of the crank shaft 5 into a reciprocating movement. And a piston (8) coupled to the slider (7), and a cylinder (9) bolted to the frame (2) to allow the piston (8) to reciprocate.

또한, 상기 하부밀폐용기(1b)의 바닥면에는 기구부의 윤활을 위한 오일(10)이 담겨져 있다.In addition, the bottom surface of the lower airtight container 1b contains oil 10 for lubrication of the mechanism part.

이와같이 구성된 종래의 밀폐형 압축기에 전원이 인가되면 고정자(3)와 회전자(4) 사이에 유도전류가 발생하여 회전자(4)가 회전하게 되고, 상기 회전자(4)의 회전에 따라 회전자(4)에 압입된 크랭크축(5)이 회전자(4)와 같이 회전하게 된다.When power is applied to the conventional hermetic compressor configured as described above, an induction current is generated between the stator 3 and the rotor 4 so that the rotor 4 rotates, and the rotor is rotated according to the rotation of the rotor 4. The crankshaft 5 pressed into (4) rotates like the rotor 4.

상기 크랭크축(5)의 상부에 형성된 편심부(6)는 크랭크축(5)의 회전에 따라 일정한 편심괘적을 그리면서 편심회전하게 되고, 상기 편심부(6)의 편심회전에 따라 편심부(6)에 결합된 슬라이더(7)는 크랭크축(5)의 회전운동을 왕복운동으로 전환하여 그 운동량을 피스톤(8)에 전달하고, 상기 피스톤(8)은 실린더(9)내를 왕복운동한다.The eccentric portion 6 formed on the upper portion of the crank shaft 5 is eccentric rotation while drawing a certain eccentric rule according to the rotation of the crank shaft 5, according to the eccentric rotation of the eccentric portion 6 ( The slider 7 coupled to 6 converts the rotational movement of the crankshaft 5 into reciprocating motion and transmits the momentum to the piston 8, which reciprocates in the cylinder 9. .

이때, 상기 크랭크축(5)의 회전에 따라 도 2 와 같이 하부밀폐용기(1b)에 담겨 있는 오일(10)이 중공의 크랭크축(5)의 내부로 흡입되어지고, 상기 크랭크축(5)의 내부로 흡입된 오일(10)은 중공의 크랭크축(5) 내부유로를 따라 상승하게 되고, 상기 크랭크축(5)의 편심부(6)에 이른 오일(10)은 분사되어 윤활이 필요한 각 윤활부위에 공급된다.At this time, as the crankshaft 5 rotates, the oil 10 contained in the lower airtight container 1b as shown in FIG. 2 is sucked into the hollow crankshaft 5, and the crankshaft 5 The oil (10) sucked into the inside of the crankshaft (5) is raised along the inner flow path, and the oil (10) reaching the eccentric (6) of the crankshaft (5) is injected to the lubrication angle It is supplied to the lubrication part.

그러나 이러한 종래의 밀폐형 압축기는 크랭크축의 회전속도를 필요에 의해 저속으로 변화시킬 경우 회전원심력에 비해 중력이 커지므로 오일을 크랭크축내의 유로로 원활히 흡상하지 못하여 윤활이 필요한 각 윤활부위로 오일을 충분히 공급하지 못하게 되므로 각 윤활부위의 마모가 심해지게 되고, 이로 인해 압축기의 수명에 치명적인 영향을 미치게 되는 문제점이 있었다.However, in the conventional hermetic compressor, when the rotational speed of the crankshaft is changed at a low speed, the gravity becomes larger than the rotational centrifugal force, so oil cannot be sucked into the flow path in the crankshaft smoothly, and enough oil is supplied to each lubrication part that requires lubrication. Since it becomes impossible to wear each lubrication part is severe, this has a problem that has a fatal effect on the life of the compressor.

본 발명은 이러한 점을 감안하여 압축기내부에 피스톤의 후진운동에 의한 잔여동력으로부터 구동력을 전달받아 하부밀폐용기 저면의 오일을 강제흡상하는 오일펌프를 설치하여 저속운전시 오일펌프의 펌핑에 의해 오일을 윤활이 필요한 각 윤활부위에 충분히 공급함으로써 기구부의 마모를 방지하는 데 그 목적이 있다.In view of the above, the present invention installs an oil pump for receiving the driving force from the residual power caused by the backward movement of the piston in the compressor and forcibly drawing up the oil on the bottom of the lower airtight container. The purpose is to prevent abrasion of the mechanism part by supplying sufficiently to each lubrication part requiring lubrication.

도 1 은 종래 밀폐형 압축기의 종단면도.1 is a longitudinal sectional view of a conventional hermetic compressor.

도 2 은 종래 밀폐형 압축기의 급유를 나타낸 동작도로서, a는 피스톤의 후진운동(흡입행정)시, b는 피스톤의 전진운동(토출행정)시.Figure 2 is an operation diagram showing the lubrication of the conventional hermetic compressor, a is a backward movement (suction stroke) of the piston, b is a forward movement (discharge stroke) of the piston.

도 3 는 본 발명 밀폐형 압축기의 오일펌프의 동작도로서, a는 피스톤의 후진운동(흡입행정)시, b는 피스톤의 전진운동(토출행정)시.Figure 3 is an operation of the oil pump of the hermetic compressor of the present invention, a is a reverse movement (suction stroke) of the piston, b is a forward movement (discharge stroke) of the piston.

* 도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

101 : 크랭크축 102 : 편심부101: crankshaft 102: eccentric portion

103 : 슬라이더 104 : 피스톤103: slider 104: piston

105 : 프레임 106 : 실린더105: frame 106: cylinder

107 : 오일 108 : 오일펌프107 oil 108 oil pump

109 : 스탠드 110 : 흡입파이프109 stand 110: suction pipe

111 : 토출파이프111: discharge pipe

이하, 본 발명을 첨부한 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

도 3 는 본 발명에 의한 밀폐형 압축기의 압축기구부 구성도를 나타낸 것으로서, 회전자(도면상에 도시되지 않음)에 압입되어 회전자의 회전에 따라 회전하는 크랭크축(101)과, 상기 크랭크축(101)의 상부에 형성되어 크랭크축(101)의 회전에 따라 편심회전하는 편심부(102)와, 상기 편심부(102)에 결합되어 크랭크축(101)의 회전운동을 왕복운동으로 바꾸어주는 슬라이더(103)와, 상기 슬라이더(103)와 결합되어 슬라이더(103)로부터 운동량을 전달받아 직선왕복운동하는 피스톤(104)과, 상기 피스톤(104)이 왕복운동을 할 수 있도록 프레임(105)에 볼트로 체결되어진 실린더(106)로 구성된다.3 is a block diagram of the compression mechanism of the hermetic compressor according to the present invention, which is press-fitted to a rotor (not shown) and rotates according to the rotation of the rotor, and the crank shaft ( A slider formed on the upper portion of the 101 to eccentrically rotate according to the rotation of the crankshaft 101 and the slider coupled to the eccentric portion 102 to change the rotational movement of the crankshaft 101 into a reciprocating motion. And a piston 104 coupled to the slider 103 to receive a momentum from the slider 103 to linearly reciprocate, and to allow the piston 104 to reciprocate. It consists of a cylinder 106 is fastened to.

그리고, 상기 피스톤(104)의 후진운동에 의한 잔여동력으로부터 구동력을 전달받아 오일(107)을 강제흡상시켜 기구부에 공급하는 오일펌프(108)가 스탠드(109)에 의해 프레임(105)면에 설치고정되고, 상기 오일펌프(108)의 상, 하부에는 오일(107)을 흡입하는 흡입파이프(110)와, 상기 흡입파이프(110)를 통해 흡입된 오일(107)을 기구부에 분출하는 토출파이프(111)가 연결된다.In addition, the oil pump 108 for forcibly drawing up the oil 107 and supplying it to the mechanism by receiving the driving force from the residual power caused by the backward movement of the piston 104 is installed on the surface of the frame 105 by the stand 109. It is fixed, the upper and lower portions of the oil pump 108, the suction pipe 110 for sucking the oil 107, and the discharge pipe for ejecting the oil 107 sucked through the suction pipe 110 to the mechanism ( 111 is connected.

이와같이 구성된 본 발명의 작용을 설명하면 다음과 같다.Referring to the operation of the present invention configured as described above is as follows.

먼저, 밀폐형 압축기에 전원이 인가되면 고정자(도면상에 도시되지 않음)와 회전자 사이에 유도전류가 발생하여 회전자가 회전하게 되고, 상기 회전자의 회전에 따라 회전자에 압입된 크랭크축(101)이 회전자와 같이 회전하게 된다.First, when power is applied to the hermetic compressor, an induction current is generated between the stator (not shown) and the rotor to rotate the rotor, and the crank shaft 101 press-fits the rotor according to the rotation of the rotor. ) Will rotate with the rotor.

상기 크랭크축(101)의 상부에 형성된 편심부(102)는 크랭크축(101)의 회전에 따라 일정한 편심괘적을 그리면서 편심회전하게 되고, 상기 편심부(102)의 편심회전에 따라 편심부(102)에 결합된 슬라이더(103)는 크랭크축(101)의 회전운동을 왕복운동으로 전환하여 그 운동량을 피스톤(104)에 전달하고, 상기 피스톤(104)은 실린더(106)내를 왕복운동하면서 냉매가스를 흡입, 압축, 토출하게 된다.The eccentric portion 102 formed on the upper portion of the crank shaft 101 is eccentric rotation while drawing a certain eccentric rule according to the rotation of the crank shaft 101, the eccentric portion (according to the eccentric rotation of the eccentric portion 102) The slider 103 coupled to 102 converts the rotational movement of the crankshaft 101 into a reciprocating motion and transmits the momentum to the piston 104, which reciprocates within the cylinder 106. The refrigerant gas is sucked, compressed and discharged.

이때, 냉매가스의 흡입을 위해 후진운동하는 피스톤(104)은 도 3 의 a와 같이 오일펌프(108)를 압축하여 오일(107)을 상방향으로 펌핑할 구동력을 발생시키게 되고, 흡입된 냉매가스의 토출을 위해 피스톤(104)이 도 3 의 b와 같이 전진운동을 하게 되면 오일펌프(108)가 팽창하면서 흡입파이프(110)를 통해 오일(107)을 상방향으로 펌핑하여 올리게 되며, 다시 피스톤(104)이 후진운동을 하게 되면 펌핑하여 올린 오일(107)을 토출파이프(111)를 통하여 분출시킴과 동시에 다시 오일(107)을 상방향으로 펌핑하게 되고, 이런 과정이 반복된다.At this time, the piston 104 to move backward for the suction of the refrigerant gas to generate a driving force to pump the oil 107 upward by compressing the oil pump 108 as shown in Figure 3a, When the piston 104 advances as shown in FIG. 3B to discharge the oil pump 108, the oil pump 108 expands and pumps the oil 107 upward through the suction pipe 110. When the 104 moves backward, the pumped oil 107 is ejected through the discharge pipe 111 and the oil 107 is pumped upward again, and this process is repeated.

이와 같이, 벨로우즈(bellows)방식을 채택한 오일펌프(108)에 의해 압축기의 저속운전시에도 오일(107)을 원활히 흡상시켜 마찰이 심한 기구부에 충분히 공급하게 되어 불필요한 입력감소와 재료의 손상을 방지할 수 있게 되고, 이에 따라 압축기의 수명도 연장되는 것이다.In this way, the oil pump 108 adopting the bellows method smoothly draws up the oil 107 even during low-speed operation of the compressor, and supplies sufficient oil to the mechanism with high friction, thereby preventing unnecessary input reduction and material damage. It is possible to extend the life of the compressor accordingly.

또한, 상기 오일펌프(108)의 압축, 팽창에 의해 펌핑된 오일(107)의 역류를 방지하도록 오일펌프(108)에 연결된 흡입파이프(110)에 일종의 체크 밸브(check valve)기능을 가진 장치를 부가하거나, 상기 흡입파이프(110) 직경을 조절하여 1회 펌핑시의 펌핑양이 오일펌프(108)의 볼록한 부분까지 도달하도록하여 오일펌프(108)의 압축시에 분출이 가능하도록 한다.In addition, a device having a kind of check valve function in the suction pipe 110 connected to the oil pump 108 to prevent backflow of the oil 107 pumped by the compression and expansion of the oil pump 108. In addition, by adjusting the diameter of the suction pipe 110 so that the pumping amount at the time of one pumping reaches the convex portion of the oil pump 108 to enable the ejection during the compression of the oil pump 108.

이상에서 설명한 바와 같이 본 발명은 냉매가스의 흡입을 위해 후진운동하는 피스톤의 잔여동력을 이용하여 오일을 강제 흡상시키는 오일펌프에 의해 압축기의 저속운전시에도 오일을 각 윤활부위에 원활히 공급할 수 있게 되어 마찰이 심한 기구부의 불필요한 입력감소와 재료의 손상을 방지할 수 있게 되고, 이에 따라 압축기의 수명이 연장되는 효과가 있다.As described above, the present invention enables oil to be smoothly supplied to each lubrication part even at a low speed operation of the compressor by an oil pump forcibly drawing oil by using the residual power of the piston moving backward for suction of refrigerant gas. It is possible to prevent unnecessary input reduction and material damage of the severe friction mechanism portion, thereby extending the life of the compressor.

Claims (4)

압축기의 저속운전시 오일을 강제흡입하여 마찰이 심한 기구부에 공급하도록 피스톤의 후진운동에 의한 잔여동력을 이용하는 오일펌프가 프레임면에 설치된 것을 특징으로 하는 밀폐형 압축기의 급유구조.Oil supply structure of the hermetic compressor characterized in that the oil pump using the residual power by the backward movement of the piston is installed on the frame surface to forcibly suck the oil during the low-speed operation of the compressor to supply to the mechanical parts with high friction. 제 1 항에 있어서,The method of claim 1, 상기 오일펌프는 압축, 팽창에 의해 오일을 흡입 및 토출하는 벨로우즈(bellows)방식으로 된 것을 특징으로 하는 밀폐형 압축기의 급유구조.The oil pump is a fuel supply structure of a hermetic compressor, characterized in that the bellows (bellows) method for sucking and discharging oil by compression, expansion. 제 1 항에 있어서,The method of claim 1, 상기 오일펌프의 일측에는 오일을 흡입하는 흡입파이프가 연결되고,One side of the oil pump is connected to the suction pipe for sucking the oil, 다른 일측에는 오일을 기구부에 분출하는 토출파이프가 연결된 것을 특징으로 하는 밀폐형 압축기의 급유구조.Oil supply structure of the hermetic compressor, the other side is connected to the discharge pipe for ejecting the oil to the mechanism. 제 1 항에 있어서,The method of claim 1, 상기 오일펌프는 스텐드에 의해 프레임면에 지지된 것을 특징으로 하는 밀폐형 압축기의 급유구조.The oil pump oil supply structure of the hermetic compressor, characterized in that supported on the frame surface by a stand.
KR1019970001617A 1997-01-21 1997-01-21 Oil supplying structure of closed typed compressor KR100208180B1 (en)

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