KR20080036488A - Oil recovery device for scroll compressor - Google Patents

Oil recovery device for scroll compressor Download PDF

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Publication number
KR20080036488A
KR20080036488A KR1020060103166A KR20060103166A KR20080036488A KR 20080036488 A KR20080036488 A KR 20080036488A KR 1020060103166 A KR1020060103166 A KR 1020060103166A KR 20060103166 A KR20060103166 A KR 20060103166A KR 20080036488 A KR20080036488 A KR 20080036488A
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KR
South Korea
Prior art keywords
oil
casing
oil recovery
stator
scroll compressor
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KR1020060103166A
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Korean (ko)
Inventor
엄광노
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엘지전자 주식회사
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Priority to KR1020060103166A priority Critical patent/KR20080036488A/en
Publication of KR20080036488A publication Critical patent/KR20080036488A/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
    • 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
    • F04C29/028—Means for improving or restricting lubricant flow
    • 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
    • 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
    • F04C18/0246—Details concerning the involute wraps or their base, e.g. geometry
    • F04C18/0269—Details concerning the involute wraps
    • F04C18/0292—Ports or channels located in the wrap
    • 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
    • F04C29/026—Lubricant separation
    • 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
    • F04C2210/00—Fluid
    • F04C2210/26—Refrigerants with particular properties, e.g. HFC-134a
    • 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
    • F04C2240/30—Casings or housings
    • 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
    • F04C2240/40—Electric motor
    • 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
    • Y10S415/00—Rotary kinetic fluid motors or pumps
    • 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

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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

An oil recovery device for a scroll compressor is provided to form an oil recovery protrusion connected to an oil recovery hole of a main frame integrally into the main frame, thereby preventing oil from being re-sucked into a compression chamber and simplifying the oil recovery structure. An oil recovery device for a scroll compressor includes a casing(110) mounted with a compression part with a motor part inside and filled with a predetermined amount of oil. A driving motor has a stator(141) coupled with the casing, a rotor inserted into the stator rotatively, and a driving shaft inserted into the rotor and formed with an oil path for sucking oil from the casing. A frame(120) is fixed in a suction space of the casing and has an oil recovery hole(123) inside to recover oil and an oil guide protrusion(124) formed at a surface facing the driving motor integrally to be connected to the oil recovery hole for guiding the oil to a lower part of the casing. The oil guide protrusion is overlapped. An oil guide plate(190) is mounted outside the oil guide protrusion to overlap the oil guide protrusion with a distance in such a manner that an oil groove(124a) of the oil guide protrusion is connected to a gap(141a) of the stator. The oil guide plate has an oil guide path(190a) connected to the oil groove of the oil guide protrusion.

Description

스크롤 압축기의 오일 회수 장치{OIL RECOVERY DEVICE FOR SCROLL COMPRESSOR}OIL RECOVERY DEVICE FOR SCROLL COMPRESSOR}

도 1은 종래 스크롤 압축기의 일례 보인 단면도,1 is a cross-sectional view showing an example of a conventional scroll compressor;

도 2는 도 1의 "A"부를 확대하여 보인 단면도,2 is an enlarged cross-sectional view of part “A” of FIG. 1;

도 3은 본 발명 스크롤 압축기의 일례를 보인 단면도,3 is a cross-sectional view showing an example of the scroll compressor of the present invention;

도 4는 도 3의 "A"부에 대한 일례를 확대하여 보인 단면도,4 is an enlarged cross-sectional view of an example of part “A” of FIG. 3;

도 5는 도 3의 "A"부에 대한 변형예를 보인 단면도,5 is a sectional view showing a modification to the "A" part of FIG.

** 도면의 주요 부분에 대한 부호의 설명 **** Description of symbols for the main parts of the drawing **

110 : 케이싱 120 : 메인프레임110: casing 120: mainframe

123 : 오일회수구멍 124 : 오일회수돌부123: oil recovery hole 124: oil recovery protrusion

124a : 오일홈 190 : 오일안내판124a: oil groove 190: oil guide plate

190a : 오일안내유로190a: oil guiding route

본 발명은 스크롤 압축기의 오일 회수 장치에 관한 것으로, 특히 메인프레임의 오일회수구멍를 통해 회수되는 오일이 다시 냉매흡입구로 유입되는 것을 방지할 수 있는 스크롤 압축기의 오일 회수 장치에 관한 것이다.The present invention relates to an oil recovery device of a scroll compressor, and more particularly, to an oil recovery device of a scroll compressor that can prevent the oil recovered through the oil return hole of the main frame from flowing back into the refrigerant inlet.

일반적으로 스크롤 압축기는 공조기 분야에 널리 적용하는 고효율 저소음 압축기이다. 상기 스크롤 압축기는 두 개의 스크롤이 상대 선회운동을 하면서 양쪽 스크롤 사이에 두 개 한 쌍의 압축실이 형성되고, 이 압축실이 지속적으로 중심방향으로 이동하면서 체적이 작아져 냉매가 연속으로 흡입 압축되어 토출되는 방식이다.In general, the scroll compressor is a high efficiency low noise compressor widely applied in the air conditioner field. In the scroll compressor, two pairs of compression chambers are formed between two scrolls while the two scrolls rotate relative to each other, and the compression chamber continuously moves in the center direction to decrease the volume, so that the refrigerant is continuously sucked and compressed. It is a discharge method.

이러한 스크롤 압축기는 도 1에 도시된 바와 같이, 소정 량의 오일이 채워지고 냉매흡입관(SP)과 냉매토출관(DP)이 연결되는 케이싱(1)과, 상기 케이싱(1)의 내주면 상하 양측에 각각 고정되는 메인프레임(2) 및 서브프레임(3)과, 상기 메인프레임(2)과 서브프레임(3) 사이에 장착되어 구동력을 발생하는 구동모터(4)와, 상기 메인프레임(2)에 얹혀지고 상기 구동모터(4)의 구동축(4c)에 결합되어 선회운동을 하는 선회스크롤(5)과, 상기 선회스크롤(5)의 선회랩(5a)에 맞물려 복수의 압축실(P)이 형성되도록 나선형의 고정랩(6a)이 형성되어 상기한 메인프레임(2)의 상면에 고정되는 고정스크롤(6)과, 상기 선회스크롤(5)과 메인프레임(2) 사이에 설치되어 상기 선회스크롤(5)의 자전을 방지하면서 선회시키는 올담링(Oldham's ring)(7)과, 상기 고정스크롤(6)의 경판부 배면에 결합되어 후술할 토출공간(S2)으로 토출한 압축가스의 역류를 방지하는 역지밸브(8)와, 상기 구동축(4c)의 하단에 설치되어 그 구동축(4c)의 회전시 용적변화에 의해 상기 케이싱(1)의 오일을 펌핑하는 오일펌프(9)를 포함하고 있다.As shown in FIG. 1, the scroll compressor includes a casing 1 having a predetermined amount of oil filled therein and connected to a refrigerant suction pipe SP and a refrigerant discharge pipe DP, and on both upper and lower sides of an inner circumferential surface of the casing 1. A main frame 2 and a subframe 3 fixed to each other, a driving motor 4 mounted between the main frame 2 and the subframe 3 to generate a driving force, and the main frame 2. A plurality of compression chambers P are formed by being engaged with a turning scroll 5 which is mounted and coupled to a driving shaft 4c of the driving motor 4 to make a turning movement, and a turning wrap 5a of the turning scroll 5. Spiral fixed wrap (6a) is formed so that the fixed scroll (6) is fixed to the upper surface of the main frame (2), and is provided between the rotating scroll (5) and the main frame (2) the rotating scroll ( 5) Oldham's ring (7) to be turned while preventing the rotation of the rotation, and on the back of the hard plate portion of the fixed scroll (6) A check valve 8 which prevents a backflow of the compressed gas discharged into the discharge space S2 to be described later, and a casing provided at a lower end of the drive shaft 4c, and the casing being changed by a volume change during rotation of the drive shaft 4c. An oil pump 9 for pumping oil of (1) is included.

상기 케이싱(1)은 그 내부가 상기 고정스크롤(6)의 상면에 고정 설치되는 고 저압분리판(1a)에 의해 저압부인 흡입공간(S1)과 고압부인 토출공간(S2)으로 구획되고, 상기 흡입공간(S1)에는 냉매흡입관(SP)이 연통 결합되는 반면 상기 토출공간(S2)에는 냉매토출관(DP)이 연통 결합되어 있다.The casing 1 is divided into a suction space S1 as a low pressure part and a discharge space S2 as a high pressure part by a high low pressure separator 1a fixedly installed on an upper surface of the fixed scroll 6. The refrigerant suction pipe SP is communicatively coupled to the suction space S1, while the refrigerant discharge tube DP is communicatively coupled to the discharge space S2.

상기 구동축(4c)의 중심에는 축방향으로 관통되어 오일펌프(9)에 의해 펌핑된 오일을 축 상단으로 안내하는 오일유로(F)가 형성되고, 상기 메인프레임(2)의 중앙에는 상기 구동축(4c)의 오일유로(F)를 통해 흡상되는 오일이 상기 케이싱(1)으로 다시 회수될 수 있도록 오일회수구멍(2a)이 반경방향으로 관통되도록 형성되어 있다.An oil passage F is formed at the center of the drive shaft 4c to guide the oil pumped by the oil pump 9 to the upper end of the shaft, and at the center of the main frame 2, the drive shaft ( The oil recovery hole 2a is formed to penetrate radially so that oil sucked through the oil passage F of 4c can be recovered to the casing 1 again.

상기 오일회수구멍(2a)에는 "기역자" 모양의 오일파이프(11)가 삽입 결합되고, 그 오일파이프(11)에 연통되어 상기 오일파이프(11)로 회수되는 오일을 상기 케이싱(1)의 바닥쪽으로 안내되도록 그 케이싱(1)의 내주면에는 오일가이드(12)가 고정 결합되어 있다.The oil return hole (2a) is inserted into the oil pipe 11 of the "translator" shape, the oil is in communication with the oil pipe 11 is recovered to the oil pipe 11 bottom of the casing (1) The oil guide 12 is fixedly coupled to the inner circumferential surface of the casing 1 so as to be guided toward the side.

도면중 미설명 부호인 4a는 고정자, 4b는 회전자이다.In the figure, reference numeral 4a denotes a stator, and 4b denotes a rotor.

상기와 같은 종래의 스크롤 압축기는 다음과 같이 동작한다.The conventional scroll compressor as described above operates as follows.

즉, 상기 구동모터(4)에 전원이 인가되어 구동축(4c)이 회전을 하면, 상기 선회스크롤(5)이 메인프레임(2)의 상면에서 편심 거리만큼 선회운동을 하면서 상기 선회스크롤(5)의 선회랩(5a)과 고정스크롤(6)과의 고정랩(6a) 사이에 중심을 향해 연속으로 이동하는 한 쌍의 압축실(P)이 형성되고, 이 압축실(P)은 선회스크롤(5)의 지속적인 선회운동에 의해 중심으로 이동하면서 체적이 감소하여 냉매가스를 흡입 압축한 후 케이싱(1)의 내부공간으로 토출하게 된다.That is, when power is applied to the drive motor 4 and the drive shaft 4c rotates, the swing scroll 5 rotates by an eccentric distance from the upper surface of the main frame 2 while the swing scroll 5 is rotated. A pair of compression chambers P continuously moving toward the center is formed between the turning wrap 5a of the rotating wrap 5a and the fixed scroll 6a of the fixed scroll 6, and the compression chamber P is a turning scroll ( The volume is reduced while moving to the center by the continuous turning motion of 5), and the refrigerant gas is sucked and compressed and then discharged into the inner space of the casing (1).

이와 함께, 오일은 상기 구동축(4c)의 고속회전시 오일펌프(9)에 의해 펌핑되어 상기 구동축(4c)의 오일유로(F)를 통해 상단으로 흡상되면서 일부는 상기 메인프레임(2)과 구동축(4)의 사이를 윤활하는 반면 일부는 상기 구동축(4a)의 상단에서 비산되어 메인프레임(2)과 선회스크롤(5) 사이를 윤활하게 되고, 이 오일은 상기 메인프레임(2)의 오일회수구멍(2a)을 통과하여 오일파이프(11)와 오일가이드(12)를 통해 상기 케이싱(1)의 바닥으로 회수되는 것이었다.In addition, the oil is pumped by the oil pump 9 during the high speed rotation of the drive shaft (4c) is sucked to the upper end through the oil flow path (F) of the drive shaft (4c) while the part is the main frame (2) and the drive shaft While lubricating between the parts (4), some are scattered from the upper end of the drive shaft (4a) to lubricate between the main frame (2) and the turning scroll (5), the oil is oil recovery of the main frame (2) It was recovered through the hole (2a) through the oil pipe 11 and the oil guide 12 to the bottom of the casing (1).

그러나, 상기와 같은 종래 스크롤 압축기에 있어서는, 상기 오일회수구멍(2a)을 통과하는 오일을 케이싱(1)으로 안내하도록 오일파이프(11)와 오일가이드(12)가 각각 별개 부품으로 구성됨에 따라 조립공수가 증가하여 생산비용이 가중되는 문제점이 있었다.However, in the conventional scroll compressor as described above, as the oil pipe 11 and the oil guide 12 are each composed of separate parts to guide the oil passing through the oil recovery hole 2a to the casing 1, the assembling work is performed. There was a problem that the production cost is increased by increasing the number.

본 발명은 상기와 같은 종래 스크롤 압축기의 오일 회수 장치가 가지는 문제점을 감안하여 안출한 것으로, 메인프레임의 오일회수구멍을 통해 회수되는 오일을 케이싱으로 안내하는 부품수를 간소화하여 생산비용을 절감할 수 있는 스크롤 압축기의 오일 회수 장치를 제공하려는데 본 발명의 목적이 있다.The present invention has been made in view of the above problems of the oil recovery device of the conventional scroll compressor, it is possible to reduce the production cost by simplifying the number of parts to guide the oil recovered through the oil return hole of the main frame to the casing It is an object of the present invention to provide an oil recovery apparatus of a scroll compressor.

본 발명의 목적을 달성하기 위하여, 복수의 스크롤이 맞물려 압축실이 연속으로 이동하도록 형성되는 압축기구부가 전동기구부와 함께 내부공간에 설치되고, 그 내부공간에는 소정량의 오일이 채워지는 케이싱; 상기 케이싱에 고정 결합되는 고정자와, 상기 고정자에 회전 가능하게 삽입되는 회전자와, 상기 회전자에 압입되 고 케이싱의 오일을 흡상하도록 오일유로가 형성되는 구동축으로 된 구동모터; 및 상기 케이싱의 흡입공간에 고정 설치되고, 그 내부에 오일이 회수되는 오일회수구멍이 형성되며, 그 오일회수구멍에 연통되어 오일이 케이싱의 하반부로 안내하도록 오일홈이 구비된 오일안내돌부가 상기 구동모터에 대향되는 면에 일체로 돌출되어 형성되는 프레임;을 포함한 스크롤 압축기의 오일 회수 장치가 제공된다.In order to achieve the object of the present invention, a compression mechanism is formed so that a plurality of scrolls are engaged to move the compression chamber continuously is installed in the inner space together with the electric mechanism, the inner space is filled with a predetermined amount of oil; A drive motor including a stator fixedly coupled to the casing, a rotor rotatably inserted into the stator, and a drive shaft press-fitted to the rotor and an oil flow path formed to suck oil from the casing; And an oil return hole fixedly installed in the suction space of the casing, and having an oil recovery hole therein for recovering oil, the oil guide protrusion having an oil groove communicating with the oil recovery hole to guide the oil to the lower half of the casing. Provided is an oil recovery apparatus for a scroll compressor including a frame formed to protrude integrally with a surface opposite to the driving motor.

이하, 본 발명에 의한 스크롤 압축기의 오일 회수 장치를 첨부도면에 도시된 일실시예에 의거하여 상세하게 설명한다.Hereinafter, an oil recovery apparatus of a scroll compressor according to the present invention will be described in detail with reference to an embodiment shown in the accompanying drawings.

도 3은 본 발명 스크롤 압축기의 일례를 보인 단면도이고, 도 4는 도 3의 "A"부에 대한 일례를 확대하여 보인 단면도이며, 도 5는 도 3의 "A"부에 대한 변형예를 보인 단면도이다.3 is a cross-sectional view showing an example of the scroll compressor of the present invention, Figure 4 is an enlarged cross-sectional view showing an example of the "A" part of Figure 3, Figure 5 shows a modification of the "A" part of FIG. It is a cross section.

도 1에 도시된 바와 같이 본 발명 스크롤 압축기는, 소정 량의 오일이 채워지고 냉매흡입관(SP)과 냉매토출관(DP)이 연결되는 케이싱(110)과, 상기 케이싱(110)의 내주면 상측에 고정되고 후술할 구동축(143)에 의해 흡상된 오일을 케이싱(110)의 하반부로 안내하도록 오일안내돌부(124)가 일체로 형성되는 메인프레임(120)과, 상기 케이싱(110)의 내주면 하측에 고정되는 서브프레임(130)과, 상기 메인프레임(120)과 서브프레임(130) 사이에 장착되어 구동력을 발생하는 구동모터(140)와, 상기 메인프레임(120)에 얹혀지고 상기 구동모터(140)의 구동축(143)에 결합되어 선회운동을 하는 선회스크롤(150)과, 상기 선회스크롤(150)의 선회랩(151)에 맞물려 복수의 압축실(P)이 형성되도록 나선형의 고정랩(161)이 형성되어 상기한 메인프레임(120)의 상면에 고정되는 고정스크롤(160)과, 상기 선회스크 롤(150)과 메인프레임(120) 사이에 설치되어 상기 선회스크롤(150)의 자전을 방지하면서 선회시키는 올담링(Oldham's ring)(170)과, 상기 고정스크롤(160)의 경판부 배면에 결합되어 후술할 토출공간(S2)으로 토출한 압축가스의 역류를 방지하는 역지밸브(180)가 포함된다.As shown in FIG. 1, the scroll compressor of the present invention includes a casing 110 in which a predetermined amount of oil is filled and a refrigerant suction pipe SP and a refrigerant discharge pipe DP are connected, and an upper side of an inner circumferential surface of the casing 110. The main frame 120 is integrally formed with the oil guide protrusion 124 to guide the oil sucked by the drive shaft 143, which will be described later, to the lower half of the casing 110, and below the inner circumferential surface of the casing 110. A fixed subframe 130, a driving motor 140 mounted between the main frame 120 and the subframe 130 to generate a driving force, and mounted on the main frame 120 and mounted on the driving motor 140. Spiral fixed wrap 161 to be coupled to the drive shaft 143 of the rotating wheel 150 to the pivoting movement, and the rotating wrap 151 of the swinging scroll 150 to form a plurality of compression chamber (P) The fixed scroll 160 is formed and fixed to the upper surface of the main frame 120 is formed; Is installed between the swinging scroll roll 150 and the main frame 120, the Oldham's ring (170) for turning while preventing the rotation of the swinging scroll 150, and the rigid plate of the fixed scroll 160 A check valve 180 coupled to the second rear surface to prevent a back flow of the compressed gas discharged into the discharge space S2 to be described later is included.

상기 케이싱(110)은 그 내부가 상기 고정스크롤(160)의 상면에 고정 설치되는 고저압분리판(111)에 의해 저압부인 흡입공간(S1)과 고압부인 토출공간(S2)으로 구획되고, 상기 흡입공간(S1)에는 냉매흡입관(SP)이 연통 결합되는 반면 상기 토출공간(S2)에는 냉매토출관(DP)이 연통 결합된다.The casing 110 is divided into a suction space S1 which is a low pressure part and a discharge space S2 that is a high pressure part by a high and low pressure separator 111 fixedly installed on an upper surface of the fixed scroll 160. The refrigerant suction pipe SP is communicatively coupled to the suction space S1, while the refrigerant discharge tube DP is communicatively coupled to the discharge space S2.

상기 메인프레임(120)은 환형으로 형성되어 그 중앙에 후술할 구동축(143)이 반경방향으로 지지될 수 있도록 축수구멍(121)이 형성되고, 상기 축수구멍(121)의 상측 주변에는 선회스크롤(150)의 보스부(152)가 선회운동을 할 수 있도록 보스수용홈(122)이 형성되며, 상기 보스수용홈(122)의 일측 주면에는 그 보스수용홈(122)에 고인 오일을 회수하도록 반경방향으로 관통되는 오일회수구멍(123)이 형성되고, 상기 오일회수구멍(123)의 끝단에는 그 오일회수구멍(123)에 연통되도록 오일홈(124a)이 구비되는 오일안내돌부(124)가 상기 구동모터 방향, 즉 하방으로 돌출되도록 일체로 형성된다.The main frame 120 is formed in an annular shape, the bearing hole 121 is formed in the center so that the drive shaft 143, which will be described later, in the radial direction, is formed, and the rotational scroll (top) around the upper side of the bearing hole 121 ( A boss accommodation groove 122 is formed to allow the boss portion 152 of the boss 150 to swing, and one side surface of the boss accommodation groove 122 has a radius to recover oil accumulated in the boss accommodation groove 122. The oil recovery hole 123 is formed to penetrate in the direction, and the oil guide protrusion 124 having an oil groove 124a is provided at the end of the oil recovery hole 123 to communicate with the oil recovery hole 123. It is integrally formed to protrude downwardly in the direction of the drive motor.

상기 오일안내돌부(124)는 도 4에서와 같이 그 하단이 상기 고정자(141)의 상단과 소정의 간격만큼 이격되는 길이로 형성되고, 상기 오일안내돌부(124)의 바깥쪽에는 그 오일홈(124a)이 후술할 고정자(141)의 틈새부(141a)와 연통될 수 있도록 오일안내판(190)이 중첩되게 설치된다.The oil guide protrusion 124 is formed with a length that is spaced apart from the top of the stator 141 by a predetermined interval, as shown in Figure 4, the oil guide protrusion (124) outside the oil groove ( The oil guide plate 190 is installed to overlap so that 124a can communicate with the gap portion 141a of the stator 141 which will be described later.

상기 오일안내판(190)은 그 중앙에 축방향으로 상기 오일홈(124a)과 연통되는 오일안내유로(190a)가 음형지게 형성되고, 그 오일안내유로(190a)의 양측 가장자리에는 상기 케이싱(110)에 용접 고정되도록 고정면부(미부호)가 형성된다.The oil guide plate 190 has an oil guide flow passage 190a which is in communication with the oil groove 124a in the axial direction at the center thereof to be negatively formed, and the casing 110 at both edges of the oil guide flow passage 190a. The fixing surface part (unsigned) is formed so that welding may be carried out on the surface.

상기 오일안내돌부(190)는 도 5에서와 같이 그 하단이 상기 구동모터(140)의 고정자(141)에 밀착되는 길이로 형성될 수도 있다. 이 경우 별도의 오일안내판은 설치할 필요가 없다.The oil guide protrusion 190 may have a length in which its lower end is in close contact with the stator 141 of the drive motor 140. In this case, a separate oil guide plate does not need to be installed.

상기 구동모터(140)는 케이싱(110)에 고정 결합되는 고정자(141)와, 상기 고정자(141)에 회전 가능하게 삽입되는 회전자(142)와, 상기 회전자(142)에 압입되고 케이싱(110)의 오일을 흡상하도록 오일유로(143a)가 형성되는 구동축(143)으로 이루어진다. 상기 고정자(141)의 외주면에는 상기 오일안내돌부(124)에 의해 안내되는 오일이 통과될 수 있도록 원주방향을 따라 일정간격마다 틈새부(141a)가 형성된다.The drive motor 140 has a stator 141 fixedly coupled to the casing 110, a rotor 142 rotatably inserted into the stator 141, and a press-fitted casing ( It consists of a drive shaft 143, the oil flow path (143a) is formed to suck the oil of 110. On the outer circumferential surface of the stator 141, a gap 141a is formed at predetermined intervals along the circumferential direction so that oil guided by the oil guide protrusion 124 can pass therethrough.

도면중 미설명 부호인 9는 오일펌프이다.In the figure, reference numeral 9 denotes an oil pump.

상기와 같은 본 발명 스크롤 압축기의 오일 회수 장치는 다음과 같은 작용 효과가 있다.The oil recovery device of the scroll compressor of the present invention as described above has the following effects.

즉, 상기 구동모터(140)에 전원이 인가되면 상기 구동축(143)이 회전을 하면서 구동력을 선회스크롤(150)에 전달하여 상기 선회스크롤(150)이 편심거리 만큼 선회하게 되고, 상기 선회스크롤(150)의 선회랩(151)과 고정스크롤(160)과 고정랩(161) 사이에 연속으로 이동하는 두 개 한 쌍의 압축실(P)이 형성되며, 이 압축실(P)은 상기 선회스크롤(150)의 지속적인 선회운동에 의해 중심으로 이동하면서 체적이 감소하여 냉매가스를 압축한 후 시스템으로 토출하게 된다. 이때, 상기 구동축(143)의 하단에 구비한 오일펌프(9)에 의해 상기 케이싱(110)에 충전되어 있던 오일이 펌핑되고, 이 오일은 상기 구동축(143)의 오일유로(143a)를 통해 각각의 베어링면에 공급되어 베어링면이 마모되는 것을 방지하게 된다.That is, when power is applied to the driving motor 140, the driving shaft 143 rotates to transmit a driving force to the turning scroll 150 so that the turning scroll 150 turns by an eccentric distance, and the turning scroll ( Two pairs of compression chambers P continuously moving between the turning wrap 151 and the fixed scroll 160 and the fixed wrap 161 of 150 are formed, and this compression chamber P is the turning scroll. The volume is reduced while moving to the center by the continuous turning motion of 150 to compress the refrigerant gas and discharge it to the system. At this time, the oil filled in the casing 110 is pumped by the oil pump 9 provided at the lower end of the drive shaft 143, the oil through the oil passage 143a of the drive shaft 143, respectively It is supplied to the bearing surface of the to prevent wear of the bearing surface.

여기서, 상기 베어링면을 윤활하고 난 오일은 상기 메인프레임(120)의 보스수용홈(122)에 고였다가 오일회수구멍(123)을 따라 흘러내리고, 이 오일은 상기 메인프레임(120)에 일체로 형성된 오일회수돌부(124)의 오일홈(1234a)과 오일안내판(190)의 오일안내유로(190a)를 따라 흘러 상기 구동모터(140)의 고정자(141)와 케이싱(110) 사이의 틈새부(141)를 통해 케이싱(110)의 바닥으로 회수된다.Here, the oil lubricated the bearing surface is accumulated in the boss receiving groove 122 of the main frame 120 and flows down along the oil recovery hole 123, the oil is integral to the main frame 120. A gap between the stator 141 and the casing 110 of the driving motor 140 flows along the oil groove 1234a of the formed oil recovery protrusion 124 and the oil guide passage 190a of the oil guide plate 190. 141 is recovered to the bottom of the casing 110.

이렇게 하여, 상기 베어링면을 윤활한 오일이 상기 구동모터의 회전자에 의해 비산되면서 흡입되는 냉매가스와 혼합되어 흡입구로 재유입되는 것을 효과적으로 막을 수 있다. 또, 상기 메인프레임의 오일회수구멍에 연통되는 오일회수돌부가 상기 메인프레임에 일체로 형성됨에 따라 상기 케이싱으로 오일을 회수하기 위한 구성을 간소화할 수 있다. 또, 상기 오일회수돌부가 고정자에 밀착되도록 연장 형성되는 경우에는 오일 회수를 위한 구성을 더욱 간소화하여 생산비용을 더 절감할 수 있다. In this way, the oil lubricating the bearing surface can be effectively prevented from being mixed with the refrigerant gas sucked while being scattered by the rotor of the drive motor and re-introduced into the suction port. In addition, since the oil recovery protrusion communicating with the oil recovery hole of the main frame is integrally formed in the main frame, the configuration for recovering oil to the casing can be simplified. In addition, when the oil recovery protrusion is formed to be in close contact with the stator, it is possible to further simplify the configuration for oil recovery to further reduce the production cost.

본 발명에 의한 밀폐형 압축기의 오일 회수 장치는, 상기 메인프레임의 오일회수구멍에 연통되는 오일회수돌부가 상기 메인프레임에 일체로 형성됨에 따라 오일이 압축실로 재흡입되는 것을 효과적으로 방지하면서도 오일회수를 위한 구성을 간소화하여 생산비용을 절감할 수 있다.The oil recovery device of the hermetic compressor according to the present invention, as the oil recovery protrusion communicated with the oil recovery hole of the main frame is integrally formed in the main frame to prevent oil from being re-intake into the compression chamber, Simplify configuration to reduce production costs.

Claims (5)

복수의 스크롤이 맞물려 압축실이 연속으로 이동하도록 형성되는 압축기구부가 전동기구부와 함께 내부공간에 설치되고, 그 내부공간에는 소정량의 오일이 채워지는 케이싱;Compressor mechanism is formed in the inner space together with the power transmission mechanism is formed so that the plurality of scrolls are engaged to move the compression chamber continuously, the inner space is filled with a predetermined amount of oil; 상기 케이싱에 고정 결합되는 고정자와, 상기 고정자에 회전 가능하게 삽입되는 회전자와, 상기 회전자에 압입되고 케이싱의 오일을 흡상하도록 오일유로가 형성되는 구동축으로 된 구동모터; 및 A drive motor including a stator fixedly coupled to the casing, a rotor rotatably inserted into the stator, and a drive shaft press-fitted to the rotor and an oil flow path formed to suck oil from the casing; And 상기 케이싱의 흡입공간에 고정 설치되고, 그 내부에 오일이 회수되는 오일회수구멍이 형성되며, 그 오일회수구멍에 연통되어 오일이 케이싱의 하반부로 안내하도록 오일홈이 구비된 오일안내돌부가 상기 구동모터에 대향되는 면에 일체로 돌출되어 형성되는 프레임;을 포함한 스크롤 압축기의 오일 회수 장치.The oil guide hole is fixedly installed in the suction space of the casing, the oil recovery hole is formed therein to recover the oil, and the oil guide protrusion is provided with an oil groove so as to communicate with the oil recovery hole to guide the oil to the lower half of the casing. Oil recovery device of a scroll compressor comprising; frame formed integrally projecting on the surface opposite to the motor. 제1항에 있어서,The method of claim 1, 상기 프레임의 오일안내돌부는 그 끝단이 구동모터의 고정자에 밀착되는 길이로 형성되는 스크롤 압축기의 오일 회수 장치.The oil guide protrusion of the frame is oil recovery device of the scroll compressor, the end of which is formed in a length that is in close contact with the stator of the drive motor. 제1항에 있어서,The method of claim 1, 상기 프레임의 오일안내돌부는 그 오일홈이 상기 케이싱에 고정되는 오일안 내판의 내부와 연통되는 스크롤 압축기의 오일 회수 장치.The oil guide protrusion of the frame is oil recovery device of the scroll compressor in which the oil groove is in communication with the inside of the oil inner plate is fixed to the casing. 제3항에 있어서,The method of claim 3, 상기 오일안내판은 그 일단이 상기 구동모터의 고정자에 밀착되는 반면 그 타단은 상기 오일안내돌부와 중첩되도록 설치되는 스크롤 압축기의 오일 회수 장치.The oil guide plate is oil recovery device of the scroll compressor is installed so that one end is in close contact with the stator of the drive motor while the other end is overlapped with the oil guide protrusion. 제1항에 있어서,The method of claim 1, 상기 구동모터의 고정자 외주면에는 유체가 통과될 수 있도록 원주방향을 따라 일정간격마다 틈새부가 형성되는 스크롤 압축기의 오일 회수 장치.Oil recovery device of the scroll compressor is formed on the outer circumferential surface of the stator of the drive motor at a predetermined interval along the circumferential direction so that the fluid can pass.
KR1020060103166A 2006-10-23 2006-10-23 Oil recovery device for scroll compressor KR20080036488A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160020191A (en) * 2014-08-13 2016-02-23 엘지전자 주식회사 Scroll Compressor
KR20200048753A (en) * 2018-10-30 2020-05-08 엘지전자 주식회사 A compressor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160020191A (en) * 2014-08-13 2016-02-23 엘지전자 주식회사 Scroll Compressor
USRE49074E1 (en) 2014-08-13 2022-05-17 Lg Electronics Inc. Scroll compressor
USRE49234E1 (en) 2014-08-13 2022-10-04 Lg Electronics Inc. Scroll compressor
KR20200048753A (en) * 2018-10-30 2020-05-08 엘지전자 주식회사 A compressor
US11384771B2 (en) 2018-10-30 2022-07-12 Lg Electronics Inc. Compressor

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