KR20030074900A - Bottom cap of case for hermetic rotary compressor - Google Patents

Bottom cap of case for hermetic rotary compressor Download PDF

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Publication number
KR20030074900A
KR20030074900A KR1020020013896A KR20020013896A KR20030074900A KR 20030074900 A KR20030074900 A KR 20030074900A KR 1020020013896 A KR1020020013896 A KR 1020020013896A KR 20020013896 A KR20020013896 A KR 20020013896A KR 20030074900 A KR20030074900 A KR 20030074900A
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KR
South Korea
Prior art keywords
oil
mechanism unit
rotary compressor
center
lower cover
Prior art date
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KR1020020013896A
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Korean (ko)
Inventor
김상모
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주식회사 엘지이아이
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Priority to KR1020020013896A priority Critical patent/KR20030074900A/en
Publication of KR20030074900A publication Critical patent/KR20030074900A/en

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Classifications

    • 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
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/356—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • 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
    • 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

Abstract

PURPOSE: A closed vessel for a closed rotary compressor is provided to prevent foreign materials form coming in by forming downward convex bottom center portion of a lower cover eccentrically to the center of a rotating shaft, and to reduce wear of a frictional contact part of an electromotive mechanism unit and a compression mechanism unit. CONSTITUTION: A closed vessel(10) for a closed rotary compressor(1) has a cylindrical body part(11) including an electromotive mechanism unit(20) and a compression mechanism unit(30), an upper cover(12) combined to seal the upper end, and a lower cover(13) combined to seal the lower end. In the lower cover, the curvature of the downward convex surface of the center portion(14) is formed into an oval eccentric to the axial center, to make a portion, in which foreign materials are submerged, be eccentrically out of the center portion. An oil feeder(26) of the rotating shaft prevents foreign materials from being sucked in an oil supply passage and foreign materials block an oil-communicating hole. Thus, wear of a frictional contact part of the electromotive mechanism unit and the compression mechanism unit is reduced.

Description

밀폐형 회전식 압축기용 밀폐용기 {BOTTOM CAP OF CASE FOR HERMETIC ROTARY COMPRESSOR}Hermetic container for hermetic rotary compressor {BOTTOM CAP OF CASE FOR HERMETIC ROTARY COMPRESSOR}

본 발명은 밀폐형 회전식 압축기용 밀폐용기에 관한 것으로서, 보다 상세하게는 상기 전동기구부와 압축기구부의 마찰부에 오일을 공급하기 위한 회전축에 형성된 오일피더와 오일통공에 이물질이 유입되는 것을 방지하기 위한 밀폐형 회전식 압축기용 밀폐용기의 하부덮개에 관한 것이다.The present invention relates to a hermetically sealed container for a hermetic rotary compressor, and more specifically, to an oil feeder and an oil hole formed on a rotating shaft for supplying oil to a friction part of the electric mechanism part and the compression mechanism part, to prevent foreign substances from entering the air hole. The lower cover of the hermetic container for a rotary compressor.

이하, 종래의 밀폐형 회전식 압축기는 도 1에서 도시한 바와 같이, 밀폐형 회전식 압축기에 전원을 인가하면 회전력을 발생시키는 전동기구부(120)와 전동기구부(120)로부터 회전력을 전달받아 냉매 가스를 흡입, 압축 및 토출하는 압축기구부(130)와, 상기 압축기구부(130)를 소정의 형상의 밀폐된 공간내에 고정하기 위한 밀폐용기(110)로 구성된다.Hereinafter, in the conventional hermetic rotary compressor, as shown in FIG. 1, when the power is applied to the hermetic rotary compressor, the rotating gas is supplied from the electric mechanism unit 120 and the electric mechanism unit 120 to generate rotational force, thereby sucking and compressing the refrigerant gas. And a compression vessel 130 for discharging, and a sealed container 110 for fixing the compression mechanism 130 in a sealed space of a predetermined shape.

상기 전동기구부(120)는 전원이 인가되면 자력을 발생하는 상기 밀폐용기의 내주면에 접하도록 고정 형성된 고정자(121)와, 그 고정자(121)의 자력에 의하여 회전하는 회전자(122)와, 그 회전자(122)의 내경에 압입되는 회전축(123)으로 이루어진다.The power mechanism 120 has a stator 121 fixed to contact the inner circumferential surface of the hermetically sealed container generating magnetic force when power is applied, a rotor 122 rotating by the magnetic force of the stator 121, and It consists of a rotating shaft 123 is pressed into the inner diameter of the rotor (122).

상기 압축기구부(130)는 전동기구부(120)의 하부에 위치하며, 냉매 가스를 흡입, 압축 및 토출하도록 구비된 실린더(131)와, 상기 실린더(131)의 상, 하부에 조립되어 상기 회전축(123)을 관통시켜 지지하는 상부베어링(132) 및 하부베어링(133)과, 상기 회전축(123)에 편심부(134)가 삽입되어 그 회전축(123)의회전에 따라 상기 실린더(131) 내부 공간에서 공전하는 롤링피스톤(135)과, 상기 롤링피스톤(135)의 외주면과 선 접촉되어 실린더(131)의 내부공간 내주면과 롤링피스톤(135)의 외주면에 의해 형성되는 공간부를 흡입영역과 압축영역으로 분리시키는 베인(미도시)으로 이루어진다.The compressor mechanism 130 is located below the power mechanism 120, and is provided with a cylinder 131 provided to suck, compress, and discharge refrigerant gas, and is assembled to the upper and lower portions of the cylinder 131 so that the rotating shaft ( The upper bearing 132 and the lower bearing 133 for supporting the 123 through and the eccentric portion 134 are inserted into the rotating shaft 123 and in the inner space of the cylinder 131 according to the rotation of the rotating shaft 123. The revolving rolling piston 135 and the outer circumferential surface of the rolling piston 135 are in line with each other to separate the space portion formed by the inner circumferential surface of the inner space of the cylinder 131 and the outer circumferential surface of the rolling piston 135 into a suction region and a compression region. It is made of a vane (not shown).

상기 회전축(123)은 상기 밀폐용기(110)의 저부에 오일을 상기 전동기구부(120)와 압축기구부(130)의 마찰면에 공급하도록 회전축(123) 중심을 관통하여 형성된 오일공급유로(124)에 공급하기 위한 오일피터(126)가 회전축(123)의 저부에 형성된다.The rotary shaft 123 is an oil supply passage 124 formed through the center of the rotary shaft 123 to supply oil to the bottom of the sealed container 110 to the friction surface of the electric mechanism unit 120 and the compression mechanism 130. An oil peter 126 for supplying water to the bottom is formed at the bottom of the rotating shaft 123.

상기 오일공급유로(124)는 상기 압축기구부(130)의 상부베어링(132), 하부베어링(133), 그리고 롤링피스톤(125)과 회전축(123)의 마찰부에 오일을 공급하기 위해 연통됨과 아울러 상기 회전축(123)의 상단을 관통하여 전동기부의 고정자와 회전자의 상측부로 오일이 비산되도록 연통된 오일통공(125)이 각각 형성된다. .The oil supply passage 124 communicates with the upper bearing 132, the lower bearing 133, and the rolling piston 125 and the friction shaft of the rotating shaft 123 of the compression mechanism 130 to communicate with oil. An oil through hole 125 is formed through the upper end of the rotating shaft 123 to communicate with the stator and the upper part of the rotor so that oil is scattered. .

상기 밀폐용기(110)는 일정한 두께를 갖는 중공형 원통의 본체(111)와 그 상측 개방단을 밀봉 결합하는 상부덮개(112)와, 상기 본체의 하측 개방단을 밀봉 결합하는 하부덮개(113)로 이루어진다.The airtight container 110 has a hollow cylindrical body 111 having a predetermined thickness and an upper cover 112 for sealingly coupling an upper open end thereof, and a lower cover 113 for sealingly coupling a lower open end of the main body. Is made of.

상기 하부덮개부(113)는 밀폐형 회전식 압축기의 전동기구부(120)와 압축기구부(130)의 마찰부를 윤활하기 위해 오일을 저장하도록 바닥면의 중심부가 회전축(123) 중심을 따라 어느 한 점을 중심으로 하는 정 원호형의 아래로 볼록한 중심부(114)를 갖도록 형성된다.The lower cover portion 113 has a center of the bottom surface along the center of the rotation axis 123 so as to store oil to lubricate the friction portion of the electric mechanism 120 and the compression mechanism 130 of the hermetic rotary compressor. It is formed to have a convex central portion 114 of the circular arc shape.

상기 도시된 도면의 미설명 부호 140은 흡입포트, 141은 토출포트, 142는 토출구, 143은 토출밸브 조립체, 144는 머플러, 145는 흡입관, 146은 토출관, 그리고 147은 받침대이다.In the drawing, reference numeral 140 denotes a suction port, 141 a discharge port, 142 a discharge port, 143 a discharge valve assembly, 144 a muffler, 145 a suction pipe, 146 a discharge pipe, and 147 a pedestal.

이와 같은 구성에 의하여, 종래의 밀폐형 회전식 압축기용 밀폐용기는 상기 전동기구부(120)에 인가된 전원에 의하여 형성된 고전자(121)와 회전자(122)의 자력플럭스에 의하여 회전자(122)가 회전하게 되고, 상기 회전자(122)의 중심부에 압입고정된 회전자(122)가 연동함에 따라 회전축의 저부에 형성된 오일피더(126)에 의해 오일이 회전축(123)을 내부를 관통하여 형성된 오일공급유로(124)을 따라 상기 회전축(123)과 회전 마찰하는 상기 압축기구부(130)의 상부베어링(132), 롤링피스톤(135), 그리고 하부베어링부(133)의 마찰부에 연통되는 오일통공(125)를 통하여 오일을 공급됨과 아울러 상기 회전축(123)의 상측단에 연통되는 오일통공(125)을 통하여 오일이 전동기구부(120)에 비산되도록한다.By such a configuration, the conventional hermetic rotary compressor hermetic container is a rotor 122 is formed by the magnetic flux of the high rotor 121 and the rotor 122 formed by the power applied to the electric mechanism unit 120. The oil is rotated, the oil is formed by the oil feeder 126 formed on the bottom of the rotary shaft through the rotation shaft 123 as the rotor 122 is pressed in the center of the rotor 122 is interlocked Oil through-holes in communication with the friction portion of the upper bearing 132, the rolling piston 135, and the lower bearing portion 133 of the compression mechanism 130 to frictionally rotate with the rotary shaft 123 along the supply passage 124 The oil is supplied through the 125 and the oil is scattered to the power mechanism 120 through the oil through hole 125 which communicates with the upper end of the rotating shaft 123.

상기 전동기구부(120)와 압축기구부(130)의 마찰부로 공급된 오일은 저부로 흘러내려 다시 하부덮개(113)로 고이도록 하고, 흘러내려 고이는 오일을 따라 이물질이 회전축(123) 중심을 따라 어느 한 점을 중심으로 하는 정 원호형의 아래로 볼록한 형상을 갖는 하부덮개의 바닥면 중심부(114)로 모이게 되며, 계속해서 상기 하부덮개(113)의 바닥면 중심부(114)에 고인 이물질이 오일과 함께 회전축(123) 저부에 형성된 오일피더(126)에 의해 구경이 작은 오일공급유로(124)을 따라 이동하고, 오일통공(125)에 이물질에 의하여 막혀 오일이 전동기구부(120)와 압축기구부(130)의 마찰면에 오일의 공급을 방해하여 윤활을 하지 못함으로 마찰로 인한 파손과 압축기의 신뢰성을 저하하는 문제점이 있다.The oil supplied to the friction part of the electric mechanism unit 120 and the compression mechanism unit 130 flows down to the bottom portion to be collected by the lower cover 113 again, and the foreign matter along the center of the rotating shaft 123 along the oil which flows down is accumulated. The center of the bottom cover of the lower cover having a convex shape of the lower arc centered around a point is collected in the center 114, and the foreign matter accumulated in the bottom center 114 of the lower cover 113 and oil and The oil feeder 126 formed at the bottom of the rotating shaft 123 moves along the oil supply passage 124 having a small diameter, and the oil is blocked by foreign matter in the oil through hole 125 so that the oil is driven by the electric mechanism part 120 and the compressor mechanism part ( There is a problem in that the friction surface of the 130 to prevent the lubrication of the supply of oil to lubrication, thereby reducing the damage caused by friction and the reliability of the compressor.

상기 문제점을 해결하기 위하여 안출된 본 발명에 따르면, 상기 회전축 저부에 형성된 오일피더에 오일과 함께 이물질이 유입는 것을 방지하도록 상기 회전축의 오일피더가 접하는 하부덮개의 하향 볼록한 바닥면 중심부를 회전축 중심과 편심되게 형성함으로서 이물질의 유입을 방지하도록 하는 밀폐형 회전식 압축기용 밀폐용기를 제공한다.According to the present invention devised to solve the above problems, the center of the rotation axis and the eccentric bottom of the lower convex bottom surface of the lower cover which the oil feeder of the rotary shaft is in contact with the oil feeder formed in the bottom of the rotary shaft to prevent the inflow of foreign matter It is formed so as to provide a sealed container for a closed rotary compressor to prevent the introduction of foreign matter.

도 1은 종래의 밀폐형 회전식 압축기용 밀폐용기의 하부덮개를 도시한 종단면도,1 is a longitudinal sectional view showing a lower cover of a conventional hermetic rotary compressor hermetic container;

도 2은 종래의 밀폐형 회전식 압축기용 밀폐용기의 하부 덮개를 도시한 종단면도.Figure 2 is a longitudinal sectional view showing a lower cover of a conventional hermetic rotary compressor hermetic container.

*도면의 주요부분에 대한 설명** Description of the main parts of the drawings *

1: 밀폐형 회전식 압축기 10: 밀폐용기1: hermetic rotary compressor 10: hermetic container

11: 밀폐용기 본체12: 상부덮개11: airtight container body 12: top cover

13: 하부덮개14: 중심부13: bottom cover 14: center

20: 전동기구부21: 고전자20: electric mechanism part 21: classical

22: 회전자24: 오일공급유로22: rotor 24: oil supply passage

25: 오일통공26: 오일피더25: oil feeder 26: oil feeder

30: 압축기구부32: 상부베어링30: compressor section 32: upper bearing

33: 하부베어링부35: 롤링피스톤33: lower bearing portion 35: rolling piston

상기 목적을 달성하기 위하여 본 발명은 내부에 전동기구부와 압축기구부를 포함하는 원통형 본체부와 그 상단부를 밀봉하도록 결합되는 상부덮개와, 하 단부를 봉하도록 결합되는 하부덮개를 구비한 밀폐형 회전식 압축기의 밀폐용기에 있어서, 상기 하부덮개는 이물질이 침적하는 바닥면 중심부를 회전축의 축중심에서 벗어나게 하기 위하여 중심부의 하향 볼록면의 곡률이 축중심과 편심되어 형성된 타원형으로 형성되는 것을 특징으로 하는 밀폐형 회전식 압축기의 밀폐용기에 의해 달성된다.In order to achieve the above object, the present invention provides a sealed rotary compressor including a cylindrical main body including an electric mechanism part and a compression mechanism part, an upper cover coupled to seal an upper end thereof, and a lower cover coupled to seal a lower end thereof. In the closed container, the lower cover is a closed rotary compressor, characterized in that formed in the ellipse formed by the curvature of the downward convex surface of the center eccentric with the center in order to deviate the center of the bottom surface on which foreign matter is deposited from the center of the axis of rotation. Achieved by means of a sealed container.

이하, 본 발명의 밀폐형 회전식 압축기는 도 2에서 도시한 바와 같이, 밀폐형 회전식 압축기(1)에 전원을 인가하면 회전력을 발생시키는 전동기구부(20)와 전동기구부(20)로부터 회전력을 전달받아 냉매 가스를 흡입, 압축 및 토출하는 압축기구부(30)와, 상기 압축기구부(30)를 소정의 형상의 밀폐된 공간내에 고정하기 위한 밀폐용기(10)로 구성된다.Hereinafter, as shown in FIG. 2, the hermetic rotary compressor of the present invention receives a rotational force from the electric mechanism unit 20 and the electric mechanism unit 20 that generate rotational force when power is applied to the hermetic rotary compressor 1, and the refrigerant gas. And a compression vessel (30) for suctioning, compressing, and discharging the gas, and a sealed container (10) for fixing the compression mechanism (30) in a sealed space of a predetermined shape.

상기 전동기구부(20)는 전원이 인가되면 자력을 발생하는 상기 밀폐용기의내주면에 접하도록 고정 형성된 고정자(21)와, 그 고정자(21)의 자력에 의하여 회전하는 회전자(22)와, 그 회전자(22)의 내경에 압입되는 회전축(23)으로 구성된다.The power mechanism 20 has a stator 21 fixed to contact the inner circumferential surface of the hermetically sealed container that generates magnetic force when power is applied, a rotor 22 that rotates by the magnetic force of the stator 21, and The rotating shaft 23 is pressed into the inner diameter of the rotor 22.

상기 압축기구부(30)는 전동기구부(20)의 하부에 위치하며, 냉매 가스를 흡입, 압축 및 토출하도록 구비된 실린더(31)와, 상기 실린더(31)의 상, 하부에 조립되어 상기 회전축(23)을 관통시켜 지지하는 상부베어링(32) 및 하부베어링(33)과, 상기 실린더(31)의 내부에 관통하는 회전축(22)의 축중심과 편심되어 형성된 편심부(23a)와, 상기 편심부(23a)의 외주면에 결합되어 상기 실린더(31) 내부 공간에서 공전하는 롤링피스톤(34)과, 상기 롤링피스톤(34)의 외주면과 선 접촉되어 실린더(31)의 내부공간 내주면과 롤링피스톤(34)의 외주면에 의해 형성되는 공간부를 흡입영역과 압축영역으로 분리시키는 베인(미도시)으로 구성된다.The compression mechanism unit 30 is located below the electric mechanism unit 20, and is provided with a cylinder 31 provided to suck, compress, and discharge refrigerant gas, and is assembled to the upper and lower portions of the cylinder 31 to form the rotating shaft ( The upper bearing 32 and the lower bearing 33 penetrating and supporting 23, the eccentric portion 23a formed to be eccentric with the shaft center of the rotating shaft 22 penetrating inside the cylinder 31, and the piece. The rolling piston 34 coupled to the outer circumferential surface of the core portion 23a and revolving in the inner space of the cylinder 31 and the inner circumferential surface of the inner space of the cylinder 31 and the rolling piston (line contact with the outer circumferential surface of the rolling piston 34) And a vane (not shown) that separates the space formed by the outer circumferential surface of 34 into a suction zone and a compression zone.

상기 회전축(23)은 상기 밀폐용기(10) 하부덮개(13)의 저부에 고인 오일을 상기 전동기구부(20)와 압축기구부(30)의 마찰면에 공급하도록 회전축(23) 중심을 관통하여 형성된 오일공급유로(24)와 상기 오일공급유로(24)에 오일을 공급하기 위한 오일피더(26)가 회전축(23)의 저부에 형성된다.The rotary shaft 23 is formed through the center of the rotary shaft 23 to supply oil accumulated in the bottom of the lower cover 13 of the sealed container 10 to the friction surface of the electric mechanism unit 20 and the compression mechanism unit 30. An oil feed passage 24 and an oil feeder 26 for supplying oil to the oil supply passage 24 are formed at the bottom of the rotation shaft 23.

상기 오일공급유로(24)는 상기 압축기구부(30)의 상부베어링(32)과, 하부베어링(33), 그리고 롤링피스톤(34)와 회전축(23)이 회전마찰하는 마찰부에 오일을 공급하기 위해 연통됨과 아울러, 상기 회전축(23)의 상측단을 관통하여 전동기부(20)의 고정자(21)와 회전자(22)의 상측부로 오일이 비산되도록 연통된 오일통공(25)이 형성된다.The oil supply passage 24 supplies oil to the upper bearing 32, the lower bearing 33 of the compression mechanism part 30, and the friction portion in which the rolling piston 34 and the rotating shaft 23 frictionally rotate. In addition to being communicated with each other, the oil through-hole 25 is formed so as to pass through the upper end of the rotating shaft 23 so that oil is scattered to the upper portion of the stator 21 and the rotor 22 of the motor unit 20.

상기 밀폐용기(10)는 일정한 두께를 갖는 중공형 원통의 본체부(11)와 그 상측 개방단을 밀봉 결합하는 상부덮개(12)와, 상기 본체의 하측 개방단을 밀봉 결합하는 하부덮개(13)로 이루어진다.The airtight container 10 includes a main body 11 of a hollow cylindrical body having a predetermined thickness and an upper cover 12 for sealingly coupling an upper open end thereof, and a lower cover 13 for sealingly coupling a lower open end of the main body. )

상기 하부덮개(13)는 밀폐형 회전식 압축기(1)의 전동기구부(20)와 압축기구부(30)의 마찰부를 윤활하기 위해 오일을 저장하는 중심부(14)의 하향 볼록면의 곡률이 축 중심과 일정거리(x)가 편심되어 형성된 타원형의 형상을 갖도록 형성된다.The lower cover 13 has a curvature of the downwardly convex surface of the central portion 14 storing oil in order to lubricate the friction mechanism between the electric mechanism part 20 and the compression mechanism part 30 of the hermetic rotary compressor 1. The distance x is formed to have an elliptical shape formed by being eccentric.

상기 도시된 도면의 미설명 부호 40은 흡입포트, 41은 토출포트, 42는 토출구, 43은 토출밸브 조립체, 44는 머플러, 45는 흡입관, 46은 토출관, 그리고 47은 받침대이다.In the drawing, reference numeral 40 denotes a suction port, 41 a discharge port, 42 a discharge port, 43 a discharge valve assembly, 44 a muffler, 45 a suction pipe, 46 a discharge pipe, and 47 a pedestal.

이와 같은 구성에 의하여, 종래의 밀폐형 회전식 압축기용 밀폐용기는 상기 전동기구부(20)에 인가된 전원에 의하여 형성된 고전자(21)와 회전자(22)의 자력플럭스에 의하여 회전자(22)가 회전하게 되고, 상기 회전자(22)의 중심부에 압입 고정된 회전축(23)이 연동함에 따라 회전축(23)의 저부에 형성된 오일피더(26)에 의해 오일이 회전축(23)을 내부를 관통하여 형성된 오일공급유로(24)를 따라 상기 회전축(23)과 회전 마찰하는 상기 압축기구부(30)의 하부베어링(33), 롤링피스톤(34), 그리고 상부베어링(32)의 마찰부에 오일을 공급됨과 아울러 상기 회전축(23)의 상측단에 연통된 오일공급유로(24)를 통하여 오일이 전동기구부(20)에 비산되도록 한다.By such a configuration, the conventional hermetic rotary compressor container is a rotor 22 by the magnetic flux of the high rotor 21 and the rotor 22 formed by the power applied to the power mechanism 20. As the rotary shaft 23 is press-fitted and fixed to the center of the rotor 22, the oil penetrates the rotary shaft 23 by the oil feeder 26 formed at the bottom of the rotary shaft 23. The oil is supplied to the friction portion of the lower bearing 33, the rolling piston 34, and the upper bearing 32 of the compression mechanism part 30, which rotates and rubs against the rotating shaft 23 along the formed oil supply passage 24. In addition, through the oil supply passage 24 communicated with the upper end of the rotary shaft 23 so that the oil is scattered to the electric mechanism unit (20).

상기 전동기구부(20)와 압축기구부(30)의 마찰부로 공급된 오일은 저부의 하부덮개(13)로 흘러내려 다시 하부덮개(13)에 고이고, 흘러내려 고인 오일을 따라 이물질이 회전축(23)의 축 중심에서 편차지게 형성된 타원형의 바닥면 중심부(14)에 침적되도록 하여 상기 오일피더(26)에 이물질이 유입되는 것을 방지하여 압축기의 운전 중 마찰손실을 방지하도록 한다.The oil supplied to the friction part of the electric mechanism part 20 and the compression mechanism part 30 flows to the bottom cover 13 of the bottom part and is accumulated in the bottom cover 13 again, and the foreign matter flows along the oil accumulated in the rotary shaft 23. It is to be deposited in the central portion 14 of the elliptical bottom surface deviated from the center of the shaft to prevent foreign matter from entering the oil feeder 26 to prevent friction loss during operation of the compressor.

이상 설명한 바와 같이, 본 발명에 따르면, 하부덮개로 흘러내려 고이는 오일을 따라 이물질이 침적하는 바닥면이 하향 볼록한 타원형으로 회전축 중심부가 편심지게 형성함으로서 상기 회전축의 오일피더에 의하여 오일공급유로에 이물질이 흡입되는 것을 방지하여 이물질이 오일통공을 막아서 오일이 공급되지 못하여 전동기구부와 압축기구부의 마찰 접촉부의 마모를 감소시킬 수 있는 효과를 갖는다.As described above, according to the present invention, the foreign material flows into the lower cover, and the bottom surface on which the foreign matter is deposited is convex downwardly, and the center of the rotary shaft is eccentrically formed so that the foreign material is in the oil supply passage by the oil feeder of the rotary shaft. By preventing the suction, foreign matters block the oil through-holes, which prevents the oil from being supplied, thereby reducing the wear of the frictional contact portion of the electric mechanism part and the compression mechanism part.

Claims (1)

내부에 전동기구부와 압축기구부를 포함하는 원통형 본체부와 그 상단부를 밀봉하도록 결합되는 상부덮개와, 하 단부를 봉하도록 결합되는 하부덮개를 구비한 밀폐형 회전식 압축기의 밀폐용기에 있어서In the airtight container of the hermetic rotary compressor having a cylindrical main body including an electric mechanism and a compression mechanism therein, an upper cover coupled to seal the upper end, and a lower cover coupled to seal the lower end. 상기 하부덮개는 이물질이 침적하는 부위가 중심부에서 편측으로 벗어나게 하기 위하여 중심부의 하향 볼록면의 곡률이 축중심과 편심되어 형성된 타원형으로 형성되는 것을 특징으로 하는 밀폐형 회전식 압축기의 밀폐용기.The lower cover is an airtight container of a hermetic rotary compressor, characterized in that the lower convex portion of the center is formed in an ellipse formed by the curvature of the downward convex surface of the center so as to deviate from the center to one side.
KR1020020013896A 2002-03-14 2002-03-14 Bottom cap of case for hermetic rotary compressor KR20030074900A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0197091U (en) * 1987-12-21 1989-06-28
KR950019212A (en) * 1993-12-13 1995-07-22 이헌조 Oil filter device of hermetic compressor
JPH10318140A (en) * 1997-05-21 1998-12-02 Matsushita Refrig Co Ltd Hermetic motor-driven compressor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0197091U (en) * 1987-12-21 1989-06-28
KR950019212A (en) * 1993-12-13 1995-07-22 이헌조 Oil filter device of hermetic compressor
JPH10318140A (en) * 1997-05-21 1998-12-02 Matsushita Refrig Co Ltd Hermetic motor-driven compressor

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