KR20220077943A - Scroll compressor - Google Patents

Scroll compressor Download PDF

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Publication number
KR20220077943A
KR20220077943A KR1020200165418A KR20200165418A KR20220077943A KR 20220077943 A KR20220077943 A KR 20220077943A KR 1020200165418 A KR1020200165418 A KR 1020200165418A KR 20200165418 A KR20200165418 A KR 20200165418A KR 20220077943 A KR20220077943 A KR 20220077943A
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South Korea
Prior art keywords
main
circumferential surface
diagonal
main frame
shaft portion
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KR1020200165418A
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Korean (ko)
Inventor
강동수
김기범
김성준
임혁주
임정택
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주식회사 두원공조
두원중공업(주)
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Priority to KR1020200165418A priority Critical patent/KR20220077943A/en
Publication of KR20220077943A publication Critical patent/KR20220077943A/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
    • F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
    • F04C23/02—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • 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
    • F04C29/0042—Driving elements, brakes, couplings, transmissions specially adapted for pumps
    • F04C29/0085—Prime movers
    • 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
    • F04C2230/00—Manufacture
    • F04C2230/90—Improving properties of machine parts
    • F04C2230/91—Coating
    • 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
    • F04C2240/10—Stators
    • 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
    • F04C2240/20—Rotors
    • 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
    • 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
    • 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
    • F05B2210/14—Refrigerants with particular properties, e.g. HFC-134a
    • 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
    • F05B2230/00—Manufacture
    • F05B2230/90—Coating; Surface treatment
    • 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
    • F05B2240/00—Components
    • F05B2240/10—Stators
    • 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
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • 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
    • F05B2240/00—Components
    • F05B2240/60—Shafts

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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, 모터와, 상기 모터와 결합되는 회전축이 내부에 수용되는 메인하우징; 상기 메인하우징의 일 측에 설치되는 고정스크롤; 상기 메인하우징과 고정스크롤의 사이에 설치되며, 상기 회전축에 의해 공전하는 선회스크롤; 상기 메인하우징과 선회스크롤의 사이에 설치되며, 상기 회전축이 관통되는 메인프레임을 포함하되, 상기 회전축은, 메인축부와, 상기 메인축부와 메인프레임의 사이에 설치되며, 외주면이 상기 메인축부의 외주면에 대해 사선(Diagonal line)으로 형성된 사선축부를 포함하고, 상기 메인프레임은, 내주면이 상기 사선축부의 외주면에 대응하여 사선으로 형성된 스크롤 압축기를 제공한다.The present invention, a motor and a main housing in which a rotating shaft coupled to the motor is accommodated therein; a fixed scroll installed on one side of the main housing; an orbiting scroll installed between the main housing and the fixed scroll and revolving by the rotating shaft; It is installed between the main housing and the orbiting scroll and includes a main frame through which the rotating shaft passes, wherein the rotating shaft is installed between the main shaft part and the main shaft part and the main frame, and an outer peripheral surface of the main shaft part is an outer peripheral surface Provided is a scroll compressor comprising a diagonal shaft portion formed in a diagonal line with respect to the main frame, wherein the main frame has an inner circumferential surface formed in a diagonal line to correspond to an outer circumferential surface of the diagonal shaft portion.

Description

스크롤 압축기{Scroll compressor}Scroll compressor

본 발명은 스크롤 압축기에 관한 것으로, 더욱 상세하게는, 선회스크롤의 공전을 통해 냉매를 흡입하여 압축시키는 스크롤 압축기에 관한 것이다.The present invention relates to a scroll compressor, and more particularly, to a scroll compressor that sucks and compresses a refrigerant through revolution of an orbiting scroll.

도 1을 참조하면, 차량용 공조시스템에 적용되는 스크롤 방식의 압축기(10)는 차량의 엔진룸 구조상 주로 횡형으로 설치되어 있으며, 이로 인해 모터(11)와 압축실이 횡형으로 배열되어 회전축(12)이 연결된다. 이에 따라, 종래의 전동식 축관통 스크롤 압축기(10)의 경우 횡방향 회전축을 지지하기 위해 모터 베어링과 메인프레임 베어링, 선회스크롤 베어링 그리고 고정스크롤 베어링까지 4개의 베어링에서 모터 베어링을 제외한 3개의 베어링이 사용되어 진다. 통상 모터 베어링를 제외한 베어링은 비용과 동작 소음을 고려하여 볼베어링 보다는 부시 베어링을 선호한다.Referring to FIG. 1 , the scroll type compressor 10 applied to the vehicle air conditioning system is mainly installed horizontally in the engine room structure of the vehicle, and thus the motor 11 and the compression chamber are horizontally arranged to rotate the shaft 12 this is connected Accordingly, in the case of the conventional electric through-axis scroll compressor 10, three bearings excluding the motor bearing are used from the four bearings, including the motor bearing, the main frame bearing, the orbiting scroll bearing, and the fixed scroll bearing, to support the lateral rotation shaft. become Bearings other than motor bearings generally prefer bush bearings over ball bearings in consideration of cost and operating noise.

종래의 전동식 축관통 스크롤 압축기의 경우, 선회스크롤(13)과 고정스크롤(14)에 베어링이 추가적으로 필요하므로 부품수가 증가하는 문제가 있으며, 부시베어링을 사용함으로써 필수적으로 부시베어링에 적절한 오일을 공급해야만 하는 문제가 있다. 또한, 종래의 전동식 압축기(10)는 메인프레임(15)과 선회스크롤(13)의 사이에 배압공간을 형성하여 그 배압공간의 압력으로 선회스크롤(13)을 고정스크롤(14) 쪽으로 지지하고 있다. 이때, 배압공간의 압력이 적절하지 못할 경우 압축실에서 냉매의 누설이 발생하여 압축기 효율이 저하된다. 하지만, 배압공간을 밀봉하기 위해서는 회전축에 립씰(Lip-seal)과 같은 실링부재가 구비되어야 하므로 그만큼 부품수가 증가하게 되는 문제점이 있다. 더군다나, 종래의 실링부재는 별도의 고정부재를 이용하여 메인프레임(15)에 고정하여야 하므로 부품수가 더욱더 증가하는 문제가 있다. 또, 종래의 전동식 압축기는, 배압공간이 밀봉되어 그 배압공간의 압력이 정체됨에 따라, 오일이 배압공간으로 원활하게 공급되지 못하면서 오일부족을 야기하게 된다. 이로 인해 배압공간의 내부에 위치하는 실링부재 또는 베어링에서는 마찰손실이 발생되는 문제점이 있다.In the case of the conventional electric through-axis scroll compressor, since bearings are additionally required for the orbiting scroll 13 and the fixed scroll 14, there is a problem in that the number of parts increases. there is a problem with In addition, in the conventional electric compressor 10, a back pressure space is formed between the main frame 15 and the orbiting scroll 13, and the orbiting scroll 13 is supported toward the fixed scroll 14 by the pressure of the back pressure space. . At this time, when the pressure in the back pressure space is not appropriate, the refrigerant leaks from the compression chamber, thereby reducing the compressor efficiency. However, in order to seal the back pressure space, since a sealing member such as a lip-seal must be provided on the rotating shaft, there is a problem in that the number of parts increases as much. Furthermore, since the conventional sealing member has to be fixed to the main frame 15 using a separate fixing member, there is a problem in that the number of parts is further increased. In addition, in the conventional electric compressor, as the back pressure space is sealed and the pressure in the back pressure space is stagnated, oil is not smoothly supplied to the back pressure space, causing an oil shortage. Accordingly, there is a problem in that friction loss occurs in the sealing member or the bearing located inside the back pressure space.

본 발명의 목적은 메인프레임의 부시베어링을 사용하지 않고, 회전축의 소재코팅을 통하여 제조비용 상승억제와 조립성을 향상시킬 수 있는 전동식 압축기를 제공하는 데 있다.It is an object of the present invention to provide an electric compressor capable of suppressing an increase in manufacturing cost and improving assembly performance through material coating of a rotating shaft without using a bush bearing of a main frame.

본 발명의 다른 목적은, 메인프레임의 회전축 지지부를 일정 각도의 사선으로 가공함으로써, 실링부재를 제거하고도 배압공간을 형성할 수 있도록 하여 실링부재의 사용으로 인한 제조비용의 상승을 억제하고, 메인프레임의 작용하는 베어링 하중을 분산하여 압축기의 내구성과 효율을 향상시킬 수 있는 전동식 압축기를 제공하는 데 있다.Another object of the present invention is to suppress the increase in manufacturing cost due to the use of the sealing member by processing the rotating shaft support of the main frame at an oblique angle at a certain angle, so that a back pressure space can be formed even after the sealing member is removed. An object of the present invention is to provide an electric compressor capable of improving the durability and efficiency of the compressor by distributing the bearing load acting on the frame.

본 발명의 또 다른 목적은, 배압실의 오일이 회전축과 메인프레임 사이를 통해 흡입실로 연통되며, 이때, 흡입실에 가까워질수록 토출면적이 증가하여 오일의 압력이 팽창되는 효과를 얻을 수 있어, 선회스크롤을 지지할 수 있는 충분한 배압력을 유지할 수 있는 전동식 스크롤 압축기를 제공하는 데 있다.Another object of the present invention is that the oil in the back pressure chamber communicates with the suction chamber through the rotation shaft and the main frame. An object of the present invention is to provide an electric scroll compressor capable of maintaining sufficient back pressure to support the orbiting scroll.

본 발명은, 모터와, 상기 모터와 결합되는 회전축이 내부에 수용되는 메인하우징; 상기 메인하우징의 일 측에 설치되는 고정스크롤; 상기 메인하우징과 고정스크롤의 사이에 설치되며, 상기 회전축에 의해 공전하는 선회스크롤; 상기 메인하우징과 선회스크롤의 사이에 설치되며, 상기 회전축이 관통되는 메인프레임을 포함하되, 상기 회전축은, 메인축부와, 상기 메인축부와 메인프레임의 사이에 설치되며, 외주면이 상기 메인축부의 외주면에 대해 사선(Diagonal line)으로 형성된 사선축부를 포함하고, 상기 메인프레임은, 내주면이 상기 사선축부의 외주면에 대응하여 사선으로 형성된 스크롤 압축기를 제공한다.The present invention, a motor and a main housing in which a rotating shaft coupled to the motor is accommodated therein; a fixed scroll installed on one side of the main housing; an orbiting scroll installed between the main housing and the fixed scroll and revolving by the rotating shaft; It is installed between the main housing and the orbiting scroll and includes a main frame through which the rotating shaft passes, wherein the rotating shaft is installed between the main shaft part and the main shaft part and the main frame, and an outer peripheral surface of the main shaft part is an outer peripheral surface Provided is a scroll compressor comprising a diagonal shaft portion formed in a diagonal line with respect to the main frame, wherein the main frame has an inner circumferential surface formed in a diagonal line to correspond to an outer circumferential surface of the diagonal shaft portion.

상기 사선축부는, 외주면이 일 측에서 타 측으로 갈수록 직경이 점점 증가하는 형상으로 형성되고, 상기 메인프레임은, 내주면이 일 측에서 타 측으로 갈수록 직경이 점점 증가하는 형상으로 형성될 수 있다.The oblique shaft portion may be formed in a shape in which an outer circumferential surface gradually increases in diameter from one side to the other side, and the main frame has an inner circumferential surface in which a diameter gradually increases from one side to the other side.

상기 메인프레임은, 내주면이, 상기 메인축부의 외주면과 평행한 평행면과, 상기 평행면에 연결되며 상기 사선축부의 외주면과 평행하고 상기 사선축부의 외주면과 대향하도록 배치되는 사선면을 포함할 수 있다.The main frame may include a parallel surface having an inner circumferential surface parallel to the outer circumferential surface of the main shaft portion, and an oblique surface connected to the parallel surface, parallel to the outer circumferential surface of the diagonal shaft portion, and disposed to face the outer circumferential surface of the oblique shaft portion.

상기 사선면은, 상기 평행면의 타 측에 연결될 수 있다.The diagonal surface may be connected to the other side of the parallel surface.

본 발명에 따른 스크롤 압축기에 의하면, 메인프레임의 부시베어링을 사용하지 않고, 회전축의 소재코팅을 통하여 제조비용 상승억제와 조립성을 향상시킬 수 있다.According to the scroll compressor according to the present invention, it is possible to suppress an increase in manufacturing cost and improve assembly performance through material coating of the rotating shaft without using the bush bearing of the main frame.

또한, 본 발명에 따른 스크롤 압축기에 의하면, 회전축이 메인축부와 사선축부를 포함하는 구조로 설계되고, 메인프레임의 내주면이 상기 사선축부에 대응하여 사선으로 형성됨으로써, 실링부재를 제거하고도 배압공간을 형성할 수 있도록 하여 실링부재의 사용으로 인한 제조비용의 상승을 억제하고, 메인프레임의 작용하는 베어링 하중을 분산하여 압축기의 내구성과 효율을 향상시킬 수 있다.In addition, according to the scroll compressor according to the present invention, the rotation shaft is designed to have a structure including the main shaft portion and the diagonal shaft portion, and the inner circumferential surface of the main frame is formed in a diagonal line corresponding to the diagonal shaft portion, so that the back pressure space even after the sealing member is removed It is possible to suppress the increase in manufacturing cost due to the use of the sealing member and to improve the durability and efficiency of the compressor by distributing the bearing load acting on the main frame.

또한, 본 발명에 따른 스크롤 압축기에 의하면, 배압실의 오일이 회전축과 메인프레임 사이를 통해 흡입실로 연통되며, 이때, 흡입실에 가까워질수록 토출면적이 증가하여 오일의 압력이 팽창되는 효과를 얻을 수 있어, 선회스크롤을 지지할 수 있는 충분한 배압력을 유지할 수 있다.In addition, according to the scroll compressor according to the present invention, the oil in the back pressure chamber communicates with the suction chamber through the rotation shaft and the main frame. Therefore, it is possible to maintain sufficient back pressure to support the orbiting scroll.

도 1은 종래의 스크롤 압축기의 단면도이다.
도 2는 본 발명에 따른 스크롤 압축기의 단면도이다.
도 3은 도 2의 A 부분의 확대도이다.1 is a cross-sectional view of a conventional scroll compressor.
2 is a cross-sectional view of a scroll compressor according to the present invention.
3 is an enlarged view of part A of FIG. 2 .

본 발명은 도면에 도시된 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 실시예가 가능하다는 점을 이해할 것이다. 따라서 본 발명의 진정한 기술적 보호 범위는 첨부된 청구범위의 기술적 사상에 의하여 정해져야 할 것이다.Although the present invention has been described with reference to the embodiment shown in the drawings, which is merely exemplary, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

도 2를 참조하면, 본 발명에 따른 스크롤 압축기(100)는, 메인하우징(110), 고정스크롤(120), 선회스크롤(130), 메인프레임(140) 및 커버하우징(150)을 포함한다.Referring to FIG. 2 , the scroll compressor 100 according to the present invention includes a main housing 110 , a fixed scroll 120 , an orbiting scroll 130 , a main frame 140 , and a cover housing 150 .

상기 메인하우징(110)은, 내부에 냉매가 흡입되는 흡입실이 형성되며, 모터(111) 및 회전축(112)이 내부에 수용된다. 상기 회전축(112)은, 상기 모터(111)와 결합되며, 상기 모터(111)에 의해 회전한다.The main housing 110 has a suction chamber in which the refrigerant is sucked therein, and the motor 111 and the rotating shaft 112 are accommodated therein. The rotating shaft 112 is coupled to the motor 111 and rotates by the motor 111 .

도 3을 참조하면, 상기 회전축(112)은, 메인축부(113), 사선축부(114), 관통축부(115)를 포함한다.Referring to FIG. 3 , the rotation shaft 112 includes a main shaft part 113 , an oblique shaft part 114 , and a through shaft part 115 .

상기 메인축부(113)는, 상기 모터(111)를 관통한다.The main shaft part 113 passes through the motor 111 .

상기 사선축부(114)는, 상기 메인축부(113)의 외주면에 돌출 형성되며, 외주면이 상기 메인축부(113)에 대하여 사선(Diagonal line)으로, 즉 경사지게 형성된다. 더욱 상세하게는, 상기 사선축부(114)는, 외주면이, 일 측(도 2를 기준으로 오른쪽)으로부터 타 측(도 2를 기준으로 왼쪽)으로 갈수록, 직경이 점점 증가하는 형상으로 형성된다.The oblique shaft portion 114 is formed to protrude from the outer circumferential surface of the main shaft portion 113 , and the outer circumferential surface is formed in a diagonal line, that is, inclined with respect to the main shaft portion 113 . More specifically, the diagonal shaft portion 114, the outer peripheral surface, from one side (the right side with reference to FIG. 2) to the other side (the left side with reference to FIG. 2) is formed in a shape in which the diameter gradually increases.

상기 관통축부(115)는, 상기 사선축부(114)의 일측에 설치되며, 상기 선회스크롤(130)을 관통하며, 고정스크롤(120)에 지지된다.The through shaft part 115 is installed on one side of the diagonal shaft part 114 , passes through the orbiting scroll 130 , and is supported by the fixed scroll 120 .

상기 고정스크롤(120)은, 상기 메인프레임(140)의 상측에 안착된다.The fixed scroll 120 is seated on the upper side of the main frame 140 .

상기 선회스크롤(130)은, 상기 메인하우징(110)과 고정스크롤(120)의 사이에 배치되며, 상기 고정스크롤(120)과의 사이에 냉매가 압축되는 압축실을 형성하고, 상기 회전축(112)에 의해 공전한다.The orbiting scroll 130 is disposed between the main housing 110 and the fixed scroll 120 , and forms a compression chamber in which the refrigerant is compressed between the fixed scroll 120 and the rotating shaft 112 . ) orbits by

상기 메인프레임(140)은, 상기 메인하우징(110)과 선회스크롤(130)의 사이에 배치되며, 상기 선회스크롤(130)과의 사이에 배압실을 형성하고, 상기 회전축(112)이 관통된다. 도 3을 참조하면, 상기 메인프레임(140)은, 내주면이, 상기 사선축부(114)의 외주면에 대응하여 사선으로 형성된다. 더욱 상세하게는, 상기 메인프레임(140)은, 내주면이, 평행면(141)과 사선면(142)을 포함한다. 상기 평행면(141)은, 상기 메인축부(113)의 외주면과 평행하게 형성된다. 상기 사선면(142)은, 상기 평행면(141)에 연결되며, 상기 사선축부(114)의 외주면과 평행하게 배치된다. 즉, 상기 사선면(142)은, 일 측에서 타 측으로 갈수록 직경이 점점 증가하는 형상으로 형성된다. 그리고 상기 사선면(142)은, 상기 사선축부(114)의 외주면과 대향하도록 배치된다. 한편, 상기 사선면(142)은, 상기 평행면(142)의 타 측에 연결될 수 있다.The main frame 140 is disposed between the main housing 110 and the orbiting scroll 130 , and forms a back pressure chamber between the orbiting scroll 130 and the rotating shaft 112 is passed through. . Referring to FIG. 3 , an inner circumferential surface of the main frame 140 is formed in an oblique line corresponding to an outer circumferential surface of the diagonal shaft portion 114 . More specifically, the main frame 140 has an inner peripheral surface, and includes a parallel surface 141 and an oblique surface 142 . The parallel surface 141 is formed parallel to the outer peripheral surface of the main shaft portion 113 . The diagonal surface 142 is connected to the parallel surface 141 and is disposed parallel to the outer circumferential surface of the diagonal shaft part 114 . That is, the diagonal surface 142 is formed in a shape in which the diameter gradually increases from one side to the other side. In addition, the diagonal surface 142 is disposed to face the outer peripheral surface of the diagonal shaft portion 114 . Meanwhile, the diagonal surface 142 may be connected to the other side of the parallel surface 142 .

상기 커버하우징(150)은, 상기 메인하우징(110)의 일 측에 결합되며, 상기 고정스크롤(120), 선회스크롤(130) 및 메인프레임(140)을 내부에 수용한다.The cover housing 150 is coupled to one side of the main housing 110 , and accommodates the fixed scroll 120 , the orbiting scroll 130 and the main frame 140 therein.

한편, 상기 사선축부(114)는, 외주면에 소재 코팅이 될 수 있다. 이 경우, 상기 메인프레임(140)과 회전축(112)의 사이에 별도의 부시베어링을 사용하지 않는 것이 가능하며, 상기 회전축(112)의 소재코팅을 통하여 제조비용 상승의 억제와 제품 전체의 조립성을 향상시킬 수 있다. On the other hand, the diagonal shaft portion 114 may be a material coating on the outer peripheral surface. In this case, it is possible not to use a separate bush bearing between the main frame 140 and the rotating shaft 112 , and through material coating of the rotating shaft 112 , it is possible to suppress the increase in manufacturing cost and assemble the entire product. can improve

또한, 본 발명에 따른 스크롤 압축기(100)에 의하면, 회전축(112)이 메인축부(113)와 사선축부(114)를 포함하는 구조로 설계되고, 메인프레임(140)의 내주면이 상기 사선축부(114)에 대응하여 사선으로 형성되는 사선면(142)을 포함함으로써, 실링부재를 제거하고도 배압공간을 형성할 수 있도록 하여 실링부재의 사용으로 인한 제조비용의 상승을 억제하고, 메인프레임(140)의 작용하는 베어링 하중을 분산하여 압축기의 내구성과 효율을 향상시킬 수 있다.In addition, according to the scroll compressor 100 according to the present invention, the rotating shaft 112 is designed to have a structure including the main shaft part 113 and the diagonal shaft part 114, and the inner circumferential surface of the main frame 140 is the diagonal shaft part ( By including the diagonal surface 142 formed in an oblique line corresponding to 114), a back pressure space can be formed even after the sealing member is removed, thereby suppressing an increase in manufacturing cost due to the use of the sealing member, and the main frame 140 ), it is possible to improve the durability and efficiency of the compressor by distributing the applied bearing load.

또한, 본 발명에 따른 스크롤 압축기(100)에 의하면, 배압실의 오일이 회전축(112)과 메인프레임(140) 사이를 통해 흡입실로 연통되며, 이때, 흡입실에 가까워질수록 토출면적이 증가하여 오일의 압력이 팽창되는 효과를 얻을 수 있어, 선회스크롤(130)을 지지할 수 있는 충분한 배압력을 유지할 수 있다.In addition, according to the scroll compressor 100 according to the present invention, the oil in the back pressure chamber communicates with the suction chamber through between the rotating shaft 112 and the main frame 140, and at this time, the discharge area increases as it approaches the suction chamber. It is possible to obtain the effect of expanding the pressure of the oil, so that it is possible to maintain sufficient back pressure to support the orbiting scroll 130 .

100 : 스크롤 압축기 110 : 메인하우징
112 : 회전축 113 : 메인축부
114 : 사선축부 120 : 고정스크롤
130 : 선회스크롤 140 : 메인프레임
150 : 커버하우징100: scroll compressor 110: main housing
112: rotation shaft 113: main shaft part
114: oblique shaft part 120: fixed scroll
130: orbiting scroll 140: main frame
150: cover housing

Claims (4)

모터와, 상기 모터와 결합되는 회전축이 내부에 수용되는 메인하우징;
상기 메인하우징의 일 측에 설치되는 고정스크롤;
상기 메인하우징과 고정스크롤의 사이에 설치되며, 상기 회전축에 의해 공전하는 선회스크롤;
상기 메인하우징과 선회스크롤의 사이에 설치되며, 상기 회전축이 관통되는 메인프레임을 포함하되,
상기 회전축은,
메인축부와,
상기 메인축부와 메인프레임의 사이에 설치되며, 외주면이 상기 메인축부의 외주면에 대해 사선(Diagonal line)으로 형성된 사선축부를 포함하고,
상기 메인프레임은, 내주면이 상기 사선축부의 외주면에 대응하여 사선으로 형성된 스크롤 압축기.a main housing in which a motor and a rotating shaft coupled to the motor are accommodated;
a fixed scroll installed on one side of the main housing;
an orbiting scroll installed between the main housing and the fixed scroll and revolving by the rotating shaft;
It is installed between the main housing and the orbiting scroll, including a main frame through which the rotating shaft passes,
The rotating shaft is
main shaft and
It is installed between the main shaft portion and the main frame, and an outer circumferential surface includes a diagonal shaft portion formed in a diagonal line with respect to the outer circumferential surface of the main shaft portion,
In the main frame, an inner circumferential surface of the scroll compressor is formed in an oblique line corresponding to an outer circumferential surface of the diagonal shaft portion. 청구항 1에 있어서,
상기 사선축부는, 외주면이 일 측에서 타 측으로 갈수록 직경이 점점 증가하는 형상으로 형성되고,
상기 메인프레임은, 내주면이 일 측에서 타 측으로 갈수록 직경이 점점 증가하는 형상으로 형성된 스크롤 압축기.The method according to claim 1,
The diagonal shaft portion is formed in a shape whose outer peripheral surface gradually increases in diameter from one side to the other side,
The main frame is a scroll compressor in which an inner circumferential surface is formed in a shape in which a diameter gradually increases from one side to the other. 청구항 1에 있어서,
상기 메인프레임은, 내주면이, 상기 메인축부의 외주면과 평행한 평행면과, 상기 평행면에 연결되며 상기 사선축부의 외주면과 평행하고 상기 사선축부의 외주면과 대향하도록 배치되는 사선면을 포함하는 스크롤 압축기.The method according to claim 1,
The main frame may include a parallel surface having an inner circumferential surface parallel to an outer circumferential surface of the main shaft portion, and an oblique surface connected to the parallel surface and disposed parallel to the outer circumferential surface of the diagonal shaft portion and opposite to the outer circumferential surface of the diagonal shaft portion. 청구항 3에 있어서,
상기 사선면은, 상기 평행면의 타 측에 연결되는 스크롤 압축기.4. The method according to claim 3,
The oblique plane is connected to the other side of the parallel plane.
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