KR100248706B1 - Compression part combination device of a rotary compressor - Google Patents

Compression part combination device of a rotary compressor Download PDF

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Publication number
KR100248706B1
KR100248706B1 KR1019970050932A KR19970050932A KR100248706B1 KR 100248706 B1 KR100248706 B1 KR 100248706B1 KR 1019970050932 A KR1019970050932 A KR 1019970050932A KR 19970050932 A KR19970050932 A KR 19970050932A KR 100248706 B1 KR100248706 B1 KR 100248706B1
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South Korea
Prior art keywords
case
compression
cylinder
frame
compression unit
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KR1019970050932A
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Korean (ko)
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KR19990030635A (en
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김진동
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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
    • 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
    • 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
    • F04C29/06—Silencing
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • 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
    • F04C2230/20—Manufacture essentially without removing material
    • F04C2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F04C2230/231—Manufacture essentially without removing material by permanently joining parts together by welding
    • 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
    • F04C2240/50—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/805—Fastening means, e.g. bolts

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

Abstract

본 발명은 회전형 압축기의 압축 기구부 결합장치에 관한 것으로 특히 케이스와 실린더의 용접부위를 통하여 압축부에서 발생하는 진동이 케이스를 가진함으로써 발생하는 소음 방사 문제를 해결하기 위한 것이다.The present invention relates to a compression mechanism coupling device of a rotary compressor, in particular, to solve the noise radiation problem caused by the vibration of the compression generated by the case through the welding portion of the case and the cylinder having a case.

본 발명의 압축기의 압축부 결합장치는 케이스(112)와 압축부의 결합위치에 고강성 프레임(130)을 설치하고 프레임을 모터의 고정자(110)와 결합하여 일체로한 후 케이스에 열박음함으로써 운전시 압축부에서 발생하는 진동이 케이스(112)로 전달되는 것을 효과적으로 방지하여 기존의 용접 결합구조에 비하여 진동저감 성능이 향상되도록 하고 또한, 모터의 고정자(110)와 결합된 프레임(130)에 압축부를 지지하는 방식을 채택함으로써 압축부를 케이스(112)에 용접하는 과정에서 발생하는 실린더(103)의 열변형을 방지할 수 있다.Compressor coupling unit of the compressor of the present invention is installed by the high rigidity frame 130 in the coupling position of the case 112 and the compression unit and the frame is coupled to the stator 110 of the motor to operate by shrinking the case When the vibration generated from the compression unit is effectively prevented from being transmitted to the case 112 to improve the vibration reduction performance compared to the conventional welding coupling structure, and also compresses to the frame 130 coupled with the stator 110 of the motor By adopting a method of supporting the portion, it is possible to prevent thermal deformation of the cylinder 103 generated in the process of welding the compression portion to the case 112.

Description

회전형 압축기의 압축부 결합장치Compression unit coupling device of rotary compressor

본 발명은 회전형 압축기의 압축기구부 결합장치에 관한 것이다.The present invention relates to a compression mechanism coupling device of a rotary compressor.

종래의 회전형 압축기는 제1도 및 제2도를 중심으로 설명한다. 일반적으로 압축기는 회전운동에 의하여 압축작용을 하기 위한 동력을 공급하는 구동장치와 밀폐 공간의 내부에서 냉매가스를 압축하는 압축장치로 구성된다. 회전형 압축기는 밀폐형 케이스(12)로 이루어지는 내부공간의 상부에 모터의 고정자(10)가 열박음되어있고 회전자(11)와 함께 구동부를 형성하며, 회전자(11)는 회전축(1)과 결합되어 회전력을 압축부로 전달한다. 압축부는 케이스(12)와 결합되어 압축부를 지지하면서 압축실(4)을 형성하는 실린더(3)와, 편심회전축(1)의 회전운동에 따라 실린더(3) 내면과 접촉하면서 압축작용을 하는 로울러(2)와 함께 압축실(4)을 형성하는 주베어링(7)과 보조베어링(8), 그리고 실린더(3)로 흡입 및 토출되는 가스의 유동통로가 되는 흡입구(5) 및 토출구(6)로 구성되어 있다. 주베어링(7)에는 실린더(3) 내부와 압축기 내부공간의 압력차에 의하여 압축가스의 유출을 조절하는 토출밸브가 설치된다. 실린더(3)를 중심으로 구성되는 압축부를 밀폐형 케이스(12)내부에 고정하기 위하여 실린더(3) 외면과 케이스(12) 내부 접촉면에 용접을 실시한다.Conventional rotary compressors will be described with reference to FIGS. 1 and 2. In general, the compressor is composed of a driving device for supplying power for the compression action by the rotational movement and a compression device for compressing the refrigerant gas in the sealed space. In the rotary compressor, the stator 10 of the motor is constricted in the upper part of the inner space formed of the sealed case 12 and forms a driving unit together with the rotor 11, and the rotor 11 is connected to the rotating shaft 1. It is combined to transmit the rotational force to the compression unit. The compression unit is coupled to the case 12 to support the compression unit while forming a compression chamber (4), the roller in contact with the inner surface of the cylinder (3) in accordance with the rotational movement of the eccentric rotation shaft (1) (2) together with the main bearing (7) and the auxiliary bearing (8) forming the compression chamber (4), and the inlet port (5) and the discharge port (6) serving as flow passages of the gas sucked into and discharged from the cylinder (3). Consists of The main bearing 7 is provided with a discharge valve for controlling the outflow of the compressed gas by the pressure difference between the cylinder 3 and the compressor internal space. Welding is performed on the outer surface of the cylinder 3 and the inner contact surface of the case 12 in order to fix the compression part formed around the cylinder 3 inside the sealed case 12.

다음으로 종래 회전형 압축기의 동작에 관해 설명하면 다음과 같다. 전동부의 모터가 회전함에 따라 흡입구(50)을 통하여 냉매가스가 압축실(4)로 빨려들어가며, 로울러(2)의 회전에 의해 압축실(4)의 체적이 축소되면서 압력이 토출압력까지 상승된 후 토출구(6)를 통과하여 주베어링(7)에 설치되어 있는 밸브의 작동에 딸 주베어링(7)의 상부에 위치한 소음기(9) 내부의 공간으로 토출된다.Next, the operation of the conventional rotary compressor will be described. As the motor of the electric motor rotates, the refrigerant gas is sucked into the compression chamber 4 through the suction port 50, and the pressure increases to the discharge pressure as the volume of the compression chamber 4 is reduced by the rotation of the roller 2. After passing through the discharge port 6 is discharged into the space inside the muffler (9) located in the upper portion of the daughter main bearing (7) in the operation of the valve installed in the main bearing (7).

이상과 같은 작용에 의하여 실린더(3)의 내부에서 이루어지는 냉매가스의 압축 및 토출 과정에서 발생하는 압력 맥동에 의하여 충격 진동이 발생하며, 이러한 가진력이 압축부 구성 요소 부품들의 요동을 발생시키고 실린더(3)로 전파되어 실린더(3)와 용접되어 있는 케이스(12)를 진동시킴으로써 압축기 외부로 소음을 발생시킨다.Due to the above-described action, shock vibration is generated by the pressure pulsation generated during the compression and discharge process of the refrigerant gas inside the cylinder 3, and the excitation force causes the vibration of the components of the compression part, and the cylinder 3 Noise is generated outside the compressor by vibrating the case 12 that is propagated to the cylinder and welded to the cylinder 3.

종래의 회전형 압축기는 제2도에 나타낸 것과 같이 밀폐 케이스(12)에 압축부를 체결하기 위하여 용접을 실시하고 있다. 용접과정에서 고열이 발생하기 때문에 용접부위의 고열이 실린더(3)로 전달되어 정밀가공을 요하는 실린더(3)에 열변형을 일으키게 된다. 현재 이러한 실린더(3)의 용접 열변형 문제를 해결하기 위하여 열전달을 줄이기 위한 구조로써 실린더(3)의 외부에 공간부(13)를 형성하는 동시에, 용접 부분을 최소화하기 위하여 3점지지 점(spot) 용접을 실시하고 있으나, 용접시 열변형 문제를 완전히 해결하는 데는 어려움이 있기 때문에 용접 작업에 주의가 요구된다.Conventional rotary compressors are welded in order to fasten the compression section to the sealed case 12 as shown in FIG. Since high heat is generated in the welding process, high heat of the welded portion is transferred to the cylinder 3, causing heat deformation in the cylinder 3 requiring precision processing. In order to solve the heat deformation problem of the welding of the cylinder 3, a space 13 is formed on the outside of the cylinder 3 as a structure for reducing heat transfer, and at the same time, a three-point support point is used to minimize the welding portion. Although welding is carried out, it is difficult to completely solve the heat deformation problem during welding.

또한, 밀폐 케이스(12)에 압축부 실린더(3)을 용접하여 체결함으로써 케이스(12)와 압축부가 강하게 결합되는 장점이 있으나, 케이스(12)와 실린더(3)의 용접부위(20)를 통하여 압축과정에서 발생하는 충격 진동과, 압축기 부품간의 상대 운동에 의하여 발생하는 마찰 및 요동에 기인하는 압축부 진동이 압축기 케이스(12)를 가진하는 현상이 발생한다. 이러한 현상은 강결합을 이루는 용접부위(20)가 전달율이 높은 진동 전달경로 역할을 함으로써 압축부에서 발생하는 진동 성분이 압축기의 밀폐케이스(12)로 전달되어 케이스(12)의 고유 진동모드와 공진을 일으키면서 외부로 소음을 방사하는 문제를 발생시킨다.In addition, there is an advantage that the case 12 and the compression unit are strongly coupled by welding and fastening the compression unit cylinder 3 to the sealed case 12, but through the welding portion 20 of the case 12 and the cylinder 3. A phenomenon in which the compression part vibration due to the friction and vibration caused by the relative motion between the compressor parts and the shock vibration generated during the compression process has the compressor case 12 occurs. This phenomenon is that the welded portion 20, which forms a strong coupling, acts as a vibration transmission path having a high transmission rate, so that the vibration component generated from the compression unit is transferred to the sealed case 12 of the compressor, thereby resonating with the natural vibration mode of the case 12. It causes the problem of radiating noise to outside.

본 발명은 회전형 압축기의 압축기구부 결합장치에 관한 것으로 특히 케이스와 실린더의 용접부위를 통하여 압축부에서 발생하는 진동이 케이스를 가진함으로써 발생하는 소음방사 문제를 해결하기 위한 것이다.The present invention relates to a compression mechanism coupling device of a rotary compressor, and in particular, to solve the noise emission problem caused by the vibration of the compression unit through the case and the welding portion of the cylinder with the case.

제1도는 종래의 회전형 압축기 구성도.1 is a configuration of a conventional rotary compressor.

제2도는 종래의 회전형 압축기 단면도.2 is a cross-sectional view of a conventional rotary compressor.

제3도는 본 발명의 결합장치 구성도.3 is a block diagram of the coupling device of the present invention.

제4도는 본 발명의 결합장치 단면도.4 is a cross-sectional view of the coupling device of the present invention.

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

103 : 실린더 107 : 주베어링103: cylinder 107: main bearing

110 : 고정자 112 : 케이스110: stator 112: case

130 : 프레임130: frame

본 발명은 기존의 압축부 용접 결합 방식에 따른 실린더(103)의 열변형 문제 및 케이스(112)와 실린더(103)의 용접 부위를 통한 압축부 진동이 케이스(112)에 전달되어 케이스를 가진하는 문제를 해결하기 위하여 케이스(112)와 실린더(103)를 결합하여 지지할 수 있는 프레임(130)을 설치하는 구조이다. 본 발명의 실린더 결합장치 구성도 및 결합부 단면도를 제3도 및 제4도에 각각 나타내었다.The present invention is a thermal deformation problem of the cylinder 103 according to the conventional compression welding method and compression part vibration through the welding portion of the case 112 and the cylinder 103 is transmitted to the case 112 to have a case In order to solve the problem, the case 112 and the cylinder 103 are combined to support the frame 130 is installed structure. 3 and 4 show cross-sectional views of a cylinder coupling device and a coupling portion of the present invention, respectively.

결합장치의 형태는 가운데 주베어링(107)의 돌출부가 관통하도록 구멍이 형성되어 있는 오목한 원형 프레임(130)으로써 고강성의 강판을 프레스 과정을 거쳐 성형 전체 프레임(130)의 강성에 변화를 주어 진동 모드의 정형화를 방지하기 위하여 프레임(130)의 결합성능을 약화시키지 않는 위치에 구멍을 형성하였다.The shape of the coupling device is a concave circular frame 130 in which a hole is formed to penetrate the protrusion of the main bearing 107, and a high rigid steel sheet is pressed to change the rigidity of the entire molding frame 130 through vibration. In order to prevent the shaping of the mode, a hole is formed at a position that does not weaken the coupling performance of the frame 130.

본 발명의 프레임에 실린더를 결합하는 방법을 설명하면 다음과 같다. 프레임(130)의 바닥면에는 실린더(103)와 체결이 가능하도록 볼트 구멍을 형성하였으며, 실린더(103)와 주베어링(107)을 결합하는데 사용되는 볼트를 공유하여 사용함으로써 실린더(103)를 프레임(130)에 결합하기 위하여 별도의 가공이 필요하지 않도록 체결 용이성을 도모하였다. 이러한 구조를 적용하여 다수의 볼트에 의해 결합력을 분배함으로써 균형을 이루면서 압축부를 지지하게 된다. 다음으로, 압축부와 결합된 프레임(130)의 상단부를 모터의 고정자(110)하단부에 결합하며, 결합성을 양호하게 하기 위하여 고정자(110) 하단을 원주방향으로 가공한 후 결합한다.Referring to the method of coupling the cylinder to the frame of the present invention as follows. A bolt hole is formed in the bottom surface of the frame 130 so as to be fastened to the cylinder 103, and the cylinder 103 is framed by sharing the bolt used to join the cylinder 103 and the main bearing 107. In order to couple to the 130, it was possible to facilitate the fastening so that no separate processing is required. By applying this structure, the compression unit is supported while balancing by distributing the bonding force by a plurality of bolts. Next, the upper end of the frame 130 combined with the compression unit is coupled to the lower end of the stator 110 of the motor, and in order to improve the bondability, the lower end of the stator 110 is circumferentially coupled.

이와 같이 모터와 압축부가 일체로 결합된 상태에서 케이스(112)에 열박음하게 된다. 따라서 압축부는 케이스와 분리된 상태로 운전하게 되므로 압축 및 토출과정 동안 압축부에서 발생하는 진동이 케이스(112)로 전달되는 것을 효과적으로 저감할 수 있다.As described above, the motor and the compression unit are integrally coupled to the case 112. Therefore, since the compression unit is operated in a state separated from the case, it is possible to effectively reduce the vibration generated in the compression unit during the compression and discharge process to the case 112.

여기 미설명 부호 101은 회전축, 102는 로울러, 105는 흡입구, 106은 토출구, 108은 보조베어링, 111은 회전자, 130은 프레임, 131은 체결볼트이다. 이들에 대한 구성설명은 종래의 기술란에서 설명하였으므로 생략한다.Here, reference numeral 101 is a rotating shaft, 102 is a roller, 105 is a suction port, 106 is a discharge port, 108 is an auxiliary bearing, 111 is a rotor, 130 is a frame, 131 is a fastening bolt. Description of the components thereof has been described in the prior art, so it will be omitted.

본 발명의 회전형 압축기의 압축부 결합장치는 케이스(112)와 압축부의 결합 위치에 고강성 프레임(130)을 설치하고 프레임을 모터의 고정자(110)와 결합하여 일체로한 후 케이스에 열박음함으로써 운전시 압축부에서 발생하는 진동이 케이스(112)로 전달되는 것을 효과적으로 방지하여 기존의 용접 결합구조에 비하여 진동 저감 성능이 향상되는 효과가 있다.Compression unit coupling device of the rotary compressor of the present invention is installed in the case 112 and the compression unit of the high rigidity frame 130, and the frame is coupled to the stator 110 of the motor and then snapped to the case As a result, the vibration generated from the compression unit during driving is effectively prevented from being transmitted to the case 112, thereby improving the vibration reduction performance as compared with the conventional welding coupling structure.

또한, 본 발명의 결합장치는 모터의 고정자(110)와 결합된 프레임(130)에 압축부를 지지하는 방식을 채택함으로써 압축부를 케이스(112)에 용접하는 과정에서 발생하는 실린더(103)의 열변형을 방지하는 효과가 있다.In addition, the coupling device of the present invention adopts a method of supporting the compression unit in the frame 130 coupled to the stator 110 of the motor, thereby thermal deformation of the cylinder 103 generated in the process of welding the compression unit to the case 112. It is effective to prevent.

Claims (1)

케이스와 결합되어 압축부를 지지하면서 압축실을 형성하는 실린더와, 편심 회전축의 회전 운동에 따라 실린더 내면과 접촉하면서 압축작용을 하는 로울러와, 실린더와 볼트로 결합되어 회전축을 지지하면서 베인, 로울러와 함께 압축실을 형성하는 주베어링과 보조베어링, 그리고 실린더로 흡입 및 토출되는 가스의 유동 통로가 되는 흡입구 및 토출구로 구성된 압축부에 있어서, 압축부를 고강성 프레임에 결합한 상태로 모터 고정자 하부에 고정하고, 압축부와 모터 고정자 어셈블리를 일체로 케이스에 열박음 하는 것을 특징으로 하는 회전형 압축기의 압축부 결합장치.The cylinder is combined with the case to form the compression chamber while supporting the compression section, the roller is in contact with the inner surface of the cylinder according to the rotational movement of the eccentric rotation shaft, and the vane and roller are combined with the cylinder and bolt to support the rotation shaft. In the compression part composed of a main bearing and an auxiliary bearing forming a compression chamber, and a suction port and a discharge port serving as a flow path of the gas sucked into and discharged from the cylinder, the compression part is fixed to the lower part of the motor stator in a state of being coupled to the high rigid frame, Compression unit coupling device of the rotary compressor, characterized in that the compression unit and the motor stator assembly integrally shrink in the case.
KR1019970050932A 1997-10-02 1997-10-02 Compression part combination device of a rotary compressor KR100248706B1 (en)

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KR100417588B1 (en) * 2001-08-23 2004-02-05 주식회사 엘지이아이 Hermetic rotary compressor
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