KR20050017236A - Structure for reducing noise of reciprocating compressor - Google Patents

Structure for reducing noise of reciprocating compressor

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Publication number
KR20050017236A
KR20050017236A KR1020030055501A KR20030055501A KR20050017236A KR 20050017236 A KR20050017236 A KR 20050017236A KR 1020030055501 A KR1020030055501 A KR 1020030055501A KR 20030055501 A KR20030055501 A KR 20030055501A KR 20050017236 A KR20050017236 A KR 20050017236A
Authority
KR
South Korea
Prior art keywords
spring
unit
reciprocating
support
casing
Prior art date
Application number
KR1020030055501A
Other languages
Korean (ko)
Inventor
김형진
김형석
김동한
노기원
김병직
Original Assignee
엘지전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 엘지전자 주식회사 filed Critical 엘지전자 주식회사
Priority to KR1020030055501A priority Critical patent/KR20050017236A/en
Publication of KR20050017236A publication Critical patent/KR20050017236A/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/0005Component 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 adaptations of pistons
    • F04B39/0016Component 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 adaptations of pistons with valve arranged in the piston
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/0027Pulsation and noise damping means
    • F04B39/0044Pulsation and noise damping means with vibration damping supports
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/0027Pulsation and noise damping means
    • F04B39/0055Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/02Lubrication
    • F04B39/0223Lubrication characterised by the compressor type
    • F04B39/0276Lubrication characterised by the compressor type the pump being of the reciprocating piston type, e.g. oscillating, free-piston compressors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00Component 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
    • F04B39/12Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/121Casings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Abstract

PURPOSE: A structure for reducing noise of a reciprocating compressor is provided to prevent contact noise of a support spring and lubricant in contracting or expanding the support spring by protruding the spring support projection. CONSTITUTION: A reciprocating compressor comprises a frame unit(20) elastically supported and installed in a casing(100) filled with lubricant, a reciprocating motor(30) linearly reciprocating a mover by mounting a stator in the frame unit, a compression unit(40) linearly reciprocating a piston combined with the mover of the reciprocating motor in a cylinder, a resonant spring unit(50) guiding resonant motion by elastically supporting the mover of the compression unit and the piston, and a support spring unit(60) elastically supporting the frame unit to the casing. A spring support projection(121) is protruded in the bottom of the casing to support the end of the support spring unit higher than the oil level of lubricant.

Description

왕복동식 압축기의 소음 저감 구조{STRUCTURE FOR REDUCING NOISE OF RECIPROCATING COMPRESSOR}Noise Reduction Structure of Reciprocating Compressor {STRUCTURE FOR REDUCING NOISE OF RECIPROCATING COMPRESSOR}

본 발명은 왕복동식 압축기의 소음 저감 구조에 관한 것으로, 특히 지지스프링이 윤활유에 잠기지 않도록 하여 스프링과 윤활유의 접촉에 의한 소음을 줄이고자 하는 왕복동식 압축기의 소음 저감 구조에 관한 것이다.The present invention relates to a noise reduction structure of a reciprocating compressor, and more particularly, to a noise reduction structure of a reciprocating compressor to reduce noise caused by contact of a spring with lubricant by preventing the support spring from being immersed in the lubricant.

일반적으로 왕복동식 압축기는 피스톤이 실린더의 내부에서 직선으로 왕복운동을 하면서 가스를 흡입 압축하여 토출시키는 것으로, 도 1은 종래 입형 왕복동식 압축기의 일례를 보인 종단면도이다.In general, a reciprocating compressor is a piston that suctions and compresses and discharges gas while linearly reciprocating in a cylinder. FIG. 1 is a longitudinal sectional view showing an example of a conventional vertical reciprocating compressor.

이에 도시한 바와 같이 종래의 왕복동식 압축기는, 일정량의 윤활유를 채운 케이싱(10)과, 케이싱(10)의 내부에 탄력 지지하여 설치하는 프레임유니트(20)와, 프레임유니트(20)에 지지하여 가동자(33)가 상하로 왕복운동을 하도록 케이싱(10)의 내부에 고정하는 왕복동모터(30)와, 왕복동모터(30)에 연결하여 프레임유니트(20)에 지지하는 압축유니트(40)와, 왕복동모터(30)를 탄력 지지하여 공진운동을 유도하는 공진스프링유니트(50)와, 케이싱(10)의 저면과 상면에 고정하여 프레임유니트(20)를 포함한 진동체의 상하 양측을 탄력 지지하는 지지스프링유니트(60)를 구성하고 있다.As shown in the drawing, a conventional reciprocating compressor is supported by a casing 10 filled with a predetermined amount of lubricating oil, a frame unit 20 that is elastically supported in the casing 10, and a frame unit 20. A reciprocating motor 30 fixed inside the casing 10 so that the mover 33 reciprocates up and down, and a compression unit 40 connected to the reciprocating motor 30 and supported by the frame unit 20; Resilient spring unit 50 for elastically supporting the reciprocating motor 30 to induce the resonant movement, and fixed to the bottom and top of the casing 10 to elastically support the upper and lower sides of the vibrating body including the frame unit 20 The support spring unit 60 is comprised.

프레임유니트(20)는 압축유니트(40)를 지지하는 제1 프레임(21)과, 제1 프레임(21)에 결합하여 왕복동모터(30)의 일측과 후술할 제1 공진스프링(52)을 지지하는 제2 프레임(22)과, 제2 프레임(22)에 결합하여 왕복동모터(30)의 타측과 후술할 제2 공진스프링(53)을 지지하는 제3 프레임(23)으로 이루어져 있다.The frame unit 20 supports the first frame 21 supporting the compression unit 40 and the first frame 21 coupled to the first frame 21 to support one side of the reciprocating motor 30 and the first resonant spring 52 to be described later. And a third frame 23 coupled to the second frame 22 to support the other side of the reciprocating motor 30 and the second resonance spring 53 to be described later.

왕복동모터(30)는 제2 프레임(22)과 제3 프레임(23) 사이에 고정 설치하는 외측고정자(31)와, 외측고정자(31)의 내측에 일정 공극을 두고 압축유니트(40)의 실린더(41)에 결합하는 내측고정자(32)와, 외측고정자(31)와 내측고정자(32) 사이의 공극(air gap)에 개재하여 압축유니트(40)의 피스톤(42)에 결합하고 그 피스톤(42)과 함께 직선으로 왕복운동을 하는 가동자(33)로 이루어져 있다.The reciprocating motor 30 has an outer stator 31 fixedly installed between the second frame 22 and the third frame 23 and a cylinder of the compression unit 40 with a predetermined gap inside the outer stator 31. An inner stator 32 coupled to the 41 and an air gap between the outer stator 31 and the inner stator 32 are coupled to the piston 42 of the compression unit 40 via the air gap. 42) is composed of a movable element 33 for reciprocating in a straight line.

압축유니트(40)는 제1 프레임(21)에 고정하는 실린더(41)와, 실린더(41)에 미끄러지게 삽입하고 왕복동모터(30)의 가동자(33)에 결합하여 상하로 왕복운동을 하는 피스톤(42)과, 피스톤(42)의 선단면에 장착하여 흡입유로(F)를 개폐하는 흡입밸브(43)와, 실린더(41)의 토출측에 장착하여 압축가스의 토출을 제한하는 토출밸브 조립체(44)로 이루어져 있다.The compression unit 40 is inserted into the cylinder 41 to be fixed to the first frame 21 and the cylinder 41 to be slidably coupled to the mover 33 of the reciprocating motor 30 to reciprocate up and down. A piston 42, a suction valve 43 mounted on the front end surface of the piston 42 to open and close the suction flow path F, and a discharge valve assembly mounted on the discharge side of the cylinder 41 to limit discharge of compressed gas. It consists of (44).

공진스프링유니트(50)는 가동자(33)와 피스톤(42)의 연결부에 결합하는 스프링지지대(51)와, 스프링지지대(51)의 상하 양측에 배치하여 가동자(33)와 피스톤(42)을 탄력적으로 지지하도록 압축코일스프링으로 형성한 제1 공진스프링(52)과 제2 공진스프링(53)으로 이루어져 있다.The resonant spring unit 50 has a spring support 51 coupled to the connecting portion of the mover 33 and the piston 42, and is disposed on both upper and lower sides of the spring support 51 to move the mover 33 and the piston 42. It consists of a first resonant spring 52 and a second resonant spring 53 formed of a compression coil spring to elastically support the.

지지스프링유니트(60)는 케이싱(10)의 바닥면과 이에 대응하는 제1 프레임(21)의 저면 사이에 고정하는 제1 지지스프링(61)과, 케이싱(10)의 상측 저면과 이에 대응하는 제3 프레임(23)의 배면 사이에 고정하는 제2 지지스프링(62)으로 이루어져 있다.The support spring unit 60 includes a first support spring 61 fixed between a bottom surface of the casing 10 and a bottom surface of the first frame 21 corresponding thereto, and an upper bottom surface of the casing 10 and a corresponding bottom surface of the casing 10. The second support spring 62 is fixed between the rear surface of the third frame 23.

도면중 미설명 부호인 11은 본체캡, 12는 하부캡, 13은 상부캡, DP는 가스토출관, SP는 가스흡입관, RP는 루프파이프, P는 압축공간이다.In the drawings, reference numeral 11 denotes a main body cap, 12 a lower cap, 13 an upper cap, DP is a gas discharge pipe, SP is a gas suction pipe, RP is a loop pipe, and P is a compression space.

상기와 같은 종래 왕복동식 압축기는 다음과 같이 동작한다.The conventional reciprocating compressor as described above operates as follows.

즉, 왕복동모터(30)의 외측고정자(31)에 전원을 인가하면, 그 외측고정자(31)와 내측고정자(32) 사이에 플럭스가 형성되어 가동자(33)와 피스톤(42)이 함께 플럭스의 방향에 따라 상하로 움직이면서 공진스프링유니트(50)에 의해 직선으로 왕복운동을 하고, 이와 함께 피스톤(42)이 실린더(41)의 내부에서 상하로 왕복운동을 하면서 실린더(41)의 압축공간(P)에 압력차를 발생시킴으로써 냉매가스를 흡입하여 일정 압력까지 압축하였다가 토출시키는 일련의 과정을 반복한다.That is, when power is applied to the outer stator 31 of the reciprocating motor 30, a flux is formed between the outer stator 31 and the inner stator 32, and the movable element 33 and the piston 42 are fluxed together. While moving up and down along the direction of the reciprocating motion in a straight line by the resonant spring unit 50, with the piston 42 reciprocating up and down inside the cylinder 41, the compression space of the cylinder 41 ( By generating a pressure difference in P), a series of processes are repeated in which the refrigerant gas is sucked in, compressed to a predetermined pressure, and then discharged.

이때, 왕복동모터(30)의 가동자(33)와 이와 결합한 피스톤(42)이 상하로 직선 왕복운동을 하는 중에 상하 진동이 발생하나, 이 진동은 프레임유니트(20)를 지지하고 있는 상하 양측의 제1 지지스프링(61) 및 제2 지지스프링(62)에 의해 감쇠되는 것이었다..At this time, vertical vibration occurs while the movable element 33 of the reciprocating motor 30 and the piston 42 coupled thereto are linearly reciprocated up and down, but the vibrations of the upper and lower sides of the frame unit 20 are supported. It was attenuated by the first support spring 61 and the second support spring 62.

그러나, 상기와 같은 종래 왕복동식 압축기는, 도 2에서와 같이 진동체의 하측을 지지하는 제1 지지스프링(61)이 케이싱(10)의 윤활유에 잠겨진 상태로 신축운동을 함에 따라 스프링과 윤활유의 접촉에 의한 소음을 유발하는 문제점이 있었다.However, in the conventional reciprocating compressor as described above, as shown in FIG. 2, as the first support spring 61 supporting the lower side of the vibrating body expands and contracts with the lubricating oil of the casing 10, There was a problem causing noise by contact.

본 발명은 상기와 같은 종래 왕복동식 압축기가 가지는 문제점을 감안하여 안출한 것으로, 진동체를 지지하는 지지스프링이 케이싱의 윤활유에 잠기지 않도록 하여 스프링과 윤활유의 접촉에 의한 소음을 제거할 수 있는 왕복동식 압축기의 소음 저감 구조를 제공하려는데 본 발명의 목적이 있다.The present invention has been made in view of the problems of the conventional reciprocating compressor as described above, the reciprocating type that can remove the noise caused by the contact of the spring and the lubricating oil by preventing the support spring for supporting the vibrating body to be submerged in the lubricating oil of the casing. It is an object of the present invention to provide a noise reduction structure of a compressor.

본 발명의 목적을 달성하기 위하여, 소정량의 윤활유를 채운 케이싱의 내부에 탄력적으로 지지하여 설치하는 프레임유니트와, 프레임유니트에 고정자를 고정 설치하여 가동자가 직선으로 왕복운동을 하는 왕복동모터와, 왕복동모터의 가동자에 결합한 피스톤이 실린더의 내부에서 직선으로 왕복운동을 하는 압축유니트와, 압축유니트의 가동자와 피스톤을 탄력 지지하여 공진운동을 유도하는 공진스프링유니트와, 프레임유니트를 케이싱에 대해 탄력적으로 지지하는 지지스프링유니트를 포함한 왕복동식 압축기에 있어서, 케이싱의 바닥면에 상기한 지지스프링유니트를 끝단을 얹어 지지하기 위한 스프링지지돌부를 소정의 높이로 돌출 형성하는 왕복동식 압축기의 소음 저감 구조를 제공한다.In order to achieve the object of the present invention, a frame unit for resiliently supporting and installed inside the casing filled with a predetermined amount of lubricating oil, and a reciprocating motor in which the stator is fixed to the frame unit to reciprocate the linear movement, and reciprocating Compression unit in which the piston coupled to the motor's mover linearly reciprocates in the cylinder, the resonant spring unit that induces the resonant movement by elastically supporting the mover and the piston of the compression unit, and the frame unit is elastic to the casing. A reciprocating compressor including a support spring unit for supporting a frame, comprising: a noise reduction structure of a reciprocating compressor for projecting a spring support protrusion to a predetermined height to support the support spring unit on the bottom surface of the casing. to provide.

이하, 본 발명에 의한 왕복동식 압축기의 소음 저감 구조를 첨부도면에 도시한 일실시예에 의거하여 상세하게 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the noise reduction structure of the reciprocating compressor by this invention is demonstrated in detail based on one Example shown in an accompanying drawing.

도 3은 본 발명 입형 왕복동식 압축기의 일례를 보인 종단면도이고, 도 4는 본 발명 입형 왕복동식 압축기에서 구동시 요부 상태를 보인 종단면도이며, 도 5는 본 발명 입형 왕복동식 압축기의 변형예를 보인 종단면도이다.Figure 3 is a longitudinal sectional view showing an example of the vertical reciprocating compressor of the present invention, Figure 4 is a longitudinal sectional view showing the main state when driving in the vertical reciprocating compressor of the present invention, Figure 5 is a modified example of the vertical reciprocating compressor of the present invention Longitudinal cross-sectional view shown.

이에 도시한 바와 같이 본 발명의 왕복동식 압축기는, 일정량의 윤활유를 채운 케이싱(100)과, 케이싱(100)의 내부에 탄력 지지하여 설치하는 프레임유니트(20)와, 프레임유니트(20)에 지지하여 가동자(33)가 상하로 왕복운동을 하도록 케이싱(100)의 내부에 고정하는 왕복동모터(30)와, 왕복동모터(30)의 가동자(33)에 피스톤(42)을 연결하여 함께 상하 왕복운동하면서 냉매가스를 압축하는 압축유니트(40)와, 왕복동모터(30)를 탄력 지지하여 공진운동을 유도하는 공진스프링유니트(50)와, 케이싱(100)의 저면과 상면에 고정하되 상기 케이싱(100)의 바닥면에서 일정 높이에 위치하여 프레임유니트(20)를 포함한 진동체의 상하 양측을 탄력 지지하는 지지스프링유니트(60)를 구성한다.As shown in the drawing, the reciprocating compressor of the present invention is supported by a casing 100 filled with a predetermined amount of lubricating oil, a frame unit 20 elastically supported in the casing 100, and a frame unit 20. Reciprocating motor 30 is fixed to the inside of the casing 100 so that the mover 33 reciprocates up and down, and the piston 42 is connected to the mover 33 of the reciprocating motor 30 to move up and down together. Compression unit 40 for compressing the refrigerant gas while reciprocating, the resonant spring unit 50 for elastically supporting the reciprocating motor 30 to induce the resonant movement, and fixed to the bottom and the upper surface of the casing 100, the casing Located at a predetermined height from the bottom surface of the 100 to constitute a support spring unit 60 for elastically supporting the upper and lower sides of the vibrating body including the frame unit 20.

케이싱(100)은 그 내부에 프레임유니트(20)와 왕복동모터(30) 그리고 압축유니트(40) 등을 배치하는 본체캡(110)과, 본체캡(110)의 하단에 결합하여 일정량의 윤활유를 채워 지면에 배치하는 하부캡(120)과, 본체캡(110)의 상단에 결합하여 밀봉하는 상부캡(130)으로 이루어진다.The casing 100 is coupled to the lower end of the main body cap 110 and the main body cap 110 to arrange the frame unit 20, the reciprocating motor 30 and the compression unit 40, etc. therein to a certain amount of lubricant oil. Filled with a lower cap 120 disposed on the ground, and the upper cap 130 is coupled to the upper end of the body cap 110 to seal.

하부캡(120)의 바닥면 중앙에는 후술할 제1 지지스프링(61)을 소정의 높이에서 지지하는 스프링지지돌부(121)를 융기지게 돌출 형성한다. 스프링지지돌부(121)는 그 상단이 주변의 함몰부(122)에 채워지는 윤활유의 유면 높이 보다 높게 형성하는 것이 제1 지지스프링(61)과 윤활유의 접촉을 최소화하는데 바람직하다.In the center of the bottom surface of the lower cap 120 is formed to protrude protruding spring support protrusion 121 to support the first support spring 61 to be described later at a predetermined height. The spring support protrusion 121 is preferably formed at a higher end than the oil level of the lubricating oil filled in the recess 122 of the periphery so as to minimize the contact between the first supporting spring 61 and the lubricating oil.

스프링지지돌부(121)는 도 3 및 도 4에서와 같이 하부캡(120)을 프레싱 가공하여 일체로 돌출 형성할 수도 있으나, 도 5에서와 같이 하부캡(120)의 바닥면을 편평하게 형성하되 소정의 높이를 가지는 별도의 지지물로 된 스프링지지돌부(123)를 후조립하여 형성할 수도 있다.The spring support protrusion 121 may be formed to protrude integrally by pressing the lower cap 120 as shown in FIGS. 3 and 4, but as shown in FIG. 5, the bottom surface of the lower cap 120 is formed flat. It may be formed by post-assembling the spring support protrusion 123 made of a separate support having a predetermined height.

또, 하부캡(120)의 측면에는 가스토출관(DP)을 연통 결합하고, 상부캡(130)의 중앙부에는 가스흡입관(SP)을 연통 결합한다. 이 중 가스토출관(DP)은 후술할 압축유니트(40)의 토출밸브조립체(44)에 연통하는 루프파이프(RP)의 끝단과 연통 결합한다. 루프파이프(RP)는 제한된 공간에서 소정의 길이를 확보할 수 있도록 토출밸브조립체(44)의 외곽을 수회 감은 후 상기한 가스토출관(DP)에 연통 결합하는 것이 바람직하다. In addition, the side of the lower cap 120 is coupled to the gas discharge pipe (DP) in communication, the central portion of the upper cap 130 is coupled to the gas suction pipe (SP) in communication. The gas discharge pipe DP is in communication with the end of the loop pipe RP communicating with the discharge valve assembly 44 of the compression unit 40 which will be described later. The loop pipe RP is preferably wound around the outer portion of the discharge valve assembly 44 several times so as to secure a predetermined length in a limited space, and then communicatively coupled to the gas discharge pipe DP.

지지스프링유니트(60)는 하부캡(120)의 스프링지지돌부(121) 상면과 이에 대응하는 상기한 프레임유니트(20)의 제1 프레임(21) 저면 사이에 고정하는 제1 지지스프링(61)과, 상부캡(130)의 저면과 이에 대응하는 프레임유니트(20)의 제3 프레임(23)의 상측면 사이에 고정하는 제2 지지스프링(62)으로 이루어진다.The support spring unit 60 is a first support spring 61 fixed between an upper surface of the spring support protrusion 121 of the lower cap 120 and a bottom surface of the first frame 21 of the frame unit 20 corresponding thereto. And a second support spring 62 fixed between the bottom surface of the upper cap 130 and the upper surface of the third frame 23 of the frame unit 20 corresponding thereto.

도면중 종래와 동일한 부분에 대하여는 동일한 부호를 부여하였다.In the drawings, the same reference numerals are given to the same parts as in the prior art.

도면중 미설명 부호인 22는 제2 프레임, 31은 외측고정자, 32는 내측고정자, 33은 가동자, 41은 실린더, 42는 피스톤, 43은 흡입밸브, P는 압축공간이다.In the drawings, reference numeral 22 denotes a second frame, 31 an outer stator, 32 an inner stator, 33 an actuator, 41 a cylinder, 42 a piston, 43 a suction valve, and P a compression space.

상기와 같은 본 발명 왕복동식 압축기의 소음 저감 구조가 가지는 작용 효과는 다음과 같다.Effects of the noise reduction structure of the reciprocating compressor of the present invention as described above are as follows.

즉, 왕복동모터(30)의 외측고정자(31)에 전원을 인가하면, 그 외측고정자(31)와 내측고정자(32) 사이에 플럭스가 형성되어 가동자(33)와 피스톤(42)이 함께 플럭스의 방향에 따라 상하로 움직이면서 공진스프링유니트(50)에 의해 직선으로 왕복운동을 하고, 이와 함께 피스톤(42)이 실린더(41)의 내부에서 상하로 왕복운동을 하면서 실린더(41)의 압축공간(P)에 압력차를 발생시킴으로써 냉매가스를 흡입하여 일정 압력까지 압축하였다가 토출시키는 일련의 과정을 반복한다.That is, when power is applied to the outer stator 31 of the reciprocating motor 30, a flux is formed between the outer stator 31 and the inner stator 32, and the movable element 33 and the piston 42 are fluxed together. While moving up and down along the direction of the reciprocating motion in a straight line by the resonant spring unit 50, with the piston 42 reciprocating up and down inside the cylinder 41, the compression space of the cylinder 41 ( By generating a pressure difference in P), a series of processes are repeated in which the refrigerant gas is sucked in, compressed to a predetermined pressure, and then discharged.

이때, 제1 지지스프링(61)과 제2 지지스프링(62)은 프레임유니트(20)와 왕복동모터(30) 그리고 압축유니트(40)를 포함한 진동체의 진동에 따라 각각 반대방향으로 신축되면서 상기한 진동체의 진동을 흡수하여 압축기의 진동을 감쇠시킨다. 이 과정에서 진동체의 하부를 지지하는 제1 지지스프링(61)은 그 하단이 윤활유를 수용하는 하부캡(120)의 바닥면에 고정함에 따라 일부가 윤활유에 잠기면서 윤활유와의 접촉소음을 유발할 수 있으나, 본 발명에서와 같이 제1 지지스프링(61)이 접하는 하부캡(120)의 바닥면에 적어도 윤활유의 유면 보다 높은 일체형 스프링지지돌부(121) 또는 조립형 스프링지지돌부(123)를 구비함에 따라 상기한 제1 지지스프링(61)이 윤활유에 잠기지 않도록 하여 지지스프링(61)의 신축시 발생할 수 있는 윤활유와의 접촉소음을 미연에 방지할 수 있다.In this case, the first support spring 61 and the second support spring 62 are expanded and contracted in opposite directions according to vibrations of the vibrating body including the frame unit 20, the reciprocating motor 30, and the compression unit 40, respectively. Absorbs vibration of one vibrating body to dampen the vibration of the compressor. In this process, the first support spring 61 supporting the lower part of the vibrating body may be in contact with the lubricating oil while part of the first supporting spring 61 is fixed to the bottom surface of the lower cap 120 containing the lubricating oil. However, as in the present invention, the bottom surface of the lower cap 120 in contact with the first support spring 61 is provided with an integrated spring support protrusion 121 or an assembled spring support protrusion 123 that is at least higher than the oil surface of the lubricant. As a result, the first support spring 61 may not be immersed in the lubricating oil, thereby preventing contact noise with the lubricating oil that may occur when the support spring 61 is stretched.

또, 제1 지지스프링(61)을 윤활유에 잠기도록 배치하는 경우 제1 지지스프링(61)이 신축되면서 기포를 발생하고 이 기포가 윤활유안내관(미도시)을 막아 윤활유의 공급량을 감소시키거나 또는 윤활유 기포가 비산되어 압축공간(P)으로 흡입되면서 기구부 마모를 유발할 수 있으나, 본 발명과 같이 윤활유와 제1 지지스프링(61)을 접하지 않도록 상기 제1 지지스프링(61)을 윤활유 보다 높게 배치하는 경우에는 윤활유 기포의 발생소지를 미연에 차단하여 윤활유의 공급량을 일정하게 유지함과 아울러 윤활유 흡입에 의한 압축기구부의 마모도 미연에 방지할 수 있다.In addition, when the first support spring 61 is disposed to be immersed in lubricating oil, the first support spring 61 is expanded and contracted to generate bubbles, and the bubbles block the lubricating oil guide tube (not shown) to reduce the amount of lubricating oil supplied thereto. Alternatively, the lubricant bubbles may be scattered and sucked into the compression space P, which may cause abrasion of the mechanism part. However, as shown in the present invention, the first support spring 61 is higher than the lubricant so as not to contact the lubricant and the first support spring 61. In the case of arrangement, the occurrence of lubricating oil bubbles can be cut off beforehand to keep the supply amount of lubricating oil constant, and to prevent wear of the compression mechanism portion due to lubricating oil suction.

한편, 본 실시예에서는 입형 왕복동식 압축기를 예로 들어 소음 저감 효과를 살펴보았으나, 본 발명은 횡형 왕복동식 압축기의 경우에도 그 효과가 전술한 일례와 대동소이하다.On the other hand, in the present embodiment, the noise reduction effect of the vertical reciprocating compressor has been described as an example, but the present invention is similar to the above-described example even in the case of the horizontal reciprocating compressor.

본 발명에 의한 왕복동식 압축기의 소음 저감 구조는, 진동체를 지지하는 지지스프링이 윤활유의 유면 보다 높게 배치함으로써, 지지스프링의 신축시 그 지지스프링과 윤활유와의 접촉소음을 미연에 방지하여 압축기 소음을 낮추고 이를 통해 왕복동식 압축기의 신뢰성을 높일 수 있다. The noise reduction structure of the reciprocating compressor according to the present invention is such that the support spring for supporting the vibrating body is disposed higher than the oil level of the lubricating oil, thereby preventing the noise of the contact between the support spring and the lubricating oil when the support spring is newly expanded. Lowering this can increase the reliability of the reciprocating compressor.

도 1은 종래 입형 왕복동식 압축기의 일례를 보인 종단면도,1 is a longitudinal sectional view showing an example of a conventional vertical reciprocating compressor;

도 2는 종래 입형 왕복동식 압축기에서 구동시 요부 상태를 보인 종단면도,Figure 2 is a longitudinal sectional view showing the main state when driving in the conventional vertical reciprocating compressor,

도 3은 본 발명 입형 왕복동식 압축기의 일례를 보인 종단면도,3 is a longitudinal sectional view showing an example of the vertical reciprocating compressor of the present invention;

도 4는 본 발명 입형 왕복동식 압축기에서 구동시 요부 상태를 보인 종단면도,Figure 4 is a longitudinal cross-sectional view showing the main state when the drive in the vertical reciprocating compressor of the present invention,

도 5는 본 발명 입형 왕복동식 압축기의 변형예를 보인 종단면도.Figure 5 is a longitudinal sectional view showing a modification of the vertical reciprocating compressor of the present invention.

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

20 : 프레임유니트 21,22,23 : 제1,제2,제3 프레임20: frame unit 21, 22, 23: first, second, third frame

30 : 왕복동모터 40 : 압축유니트30: reciprocating motor 40: compression unit

50 : 공진스프링유니트 60 : 지지스프링유니트50: resonant spring unit 60: support spring unit

61 : 제1 지지스프링 62 : 제2 지지스프링61: first support spring 62: second support spring

100 : 케이싱 110 : 본체캡100: casing 110: body cap

120 : 하부캡 121,123 : 스프링지지돌부120: lower cap 121,123: spring support protrusion

122 : 함몰부 130 : 상부캡122: depression 130: upper cap

RP : 루프파이프RP: Loop Pipe

Claims (4)

소정량의 윤활유를 채운 케이싱의 내부에 탄력적으로 지지하여 설치하는 프레임유니트와, 프레임유니트에 고정자를 고정 설치하여 가동자가 직선으로 왕복운동을 하는 왕복동모터와, 왕복동모터의 가동자에 결합한 피스톤이 실린더의 내부에서 직선으로 왕복운동을 하는 압축유니트와, 압축유니트의 가동자와 피스톤을 탄력 지지하여 공진운동을 유도하는 공진스프링유니트와, 프레임유니트를 케이싱에 대해 탄력적으로 지지하는 지지스프링유니트를 포함한 왕복동식 압축기에 있어서,The frame unit is installed by resiliently supporting the inside of the casing filled with a predetermined amount of lubricating oil, the reciprocating motor in which the stator is fixed to the frame unit to reciprocate in a straight line, and the piston is coupled to the reciprocating motor. Reciprocating unit including a compression unit that linearly reciprocates in the interior of the cylinder, a resonant spring unit that elastically supports the mover and the piston of the compression unit to induce a resonant motion, and a support spring unit that elastically supports the frame unit to the casing. In the same type of compressor, 케이싱의 바닥면에 상기한 지지스프링유니트를 끝단을 얹어 지지하기 위한 스프링지지돌부를 소정의 높이로 돌출 형성하는 것을 특징으로 하는 왕복동식 압축기의 소음 저감 구조.A noise reduction structure of the reciprocating compressor, characterized in that the bottom of the casing projecting a spring support protrusion for a predetermined height to support the end of the support spring unit. 제1항에 있어서,The method of claim 1, 스프링지지돌부는 케이싱에 일체로 성형 가공하는 것을 특징으로 하는 왕복동식 압축기의 소음 저감 구조.Noise reduction structure of the reciprocating compressor, characterized in that the spring supporting protrusion is formed integrally with the casing. 제1항에 있어서,The method of claim 1, 스프링지지돌부는 케이싱과 별개로 제작하여 후조립하는 하는 것을 특징으로 하는 왕복동식 압축기의 소음 저감 구조.The spring support protrusion is a noise reduction structure of the reciprocating compressor, characterized in that it is manufactured separately from the casing and then assembled. 제1항 내지 제3항의 어느 한 항에 있어서,The method according to any one of claims 1 to 3, 스프링지지돌부의 상단면은 적어도 윤활유의 유면 높이 보다 높게 위치하도록 형성하는 것을 특징으로 하는 왕복동식 압축기의 소음 저감 구조.Noise reduction structure of the reciprocating compressor, characterized in that the upper surface of the spring support protrusion is formed at least higher than the oil level of the lubricating oil.
KR1020030055501A 2003-08-11 2003-08-11 Structure for reducing noise of reciprocating compressor KR20050017236A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100724453B1 (en) * 2006-03-07 2007-06-04 엘지전자 주식회사 Supporting device for reciprocating compressor
CN105987113A (en) * 2015-02-09 2016-10-05 珠海格力节能环保制冷技术研究中心有限公司 Spring supporting part, rotor assembly, pump body structure and compressor
CN110725786B (en) * 2018-07-17 2021-11-30 Lg电子株式会社 Linear compressor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100724453B1 (en) * 2006-03-07 2007-06-04 엘지전자 주식회사 Supporting device for reciprocating compressor
CN105987113A (en) * 2015-02-09 2016-10-05 珠海格力节能环保制冷技术研究中心有限公司 Spring supporting part, rotor assembly, pump body structure and compressor
CN110725786B (en) * 2018-07-17 2021-11-30 Lg电子株式会社 Linear compressor
US11208989B2 (en) 2018-07-17 2021-12-28 Lg Electronics Inc. Linear compressor with a plurality of spring strands
US11268500B2 (en) 2018-07-17 2022-03-08 Lg Electronics Inc. Linear compressor with a plurality of spring strands

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