KR100615799B1 - Discharge valve assembly for linear compressor - Google Patents

Discharge valve assembly for linear compressor Download PDF

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Publication number
KR100615799B1
KR100615799B1 KR1020050007577A KR20050007577A KR100615799B1 KR 100615799 B1 KR100615799 B1 KR 100615799B1 KR 1020050007577 A KR1020050007577 A KR 1020050007577A KR 20050007577 A KR20050007577 A KR 20050007577A KR 100615799 B1 KR100615799 B1 KR 100615799B1
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South Korea
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cylinder
discharge
discharge cover
valve assembly
contact
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KR1020050007577A
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Korean (ko)
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KR20060086686A (en
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구본철
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엘지전자 주식회사
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    • 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
    • F04B39/0005—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 adaptations of pistons
    • F04B39/0016—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 adaptations of pistons with valve arranged in the piston
    • 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
    • F04B35/00—Piston 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
    • F04B35/04—Piston 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
    • F04B35/045—Piston 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 using solenoids
    • 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
    • F04B39/08—Actuation of distribution members
    • 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/08—Compressors specially adapted for separate outdoor units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/02—Compressor arrangements of motor-compressor units
    • F25B31/023—Compressor arrangements of motor-compressor units with compressor of reciprocating-piston type
    • 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
    • F05B2210/12—Kind or type gaseous, i.e. compressible
    • 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
    • F05B2260/00—Function
    • F05B2260/30—Retaining components in desired mutual position
    • F05B2260/301—Retaining bolts or nuts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S251/00—Valves and valve actuation

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Compressor (AREA)

Abstract

본 발명은 피스톤이 내부에서 왕복 직선 운동함에 따라 흡입된 냉매가 압축되는 압축공간이 내부에 형성된 실린더와, 상기 실린더 일단에 일면이 접촉된 상태에서 스프링에 의해 반대면이 탄성 지지되어 상기 실린더 내부의 압력에 따라 개폐되는 토출커버를 포함하여 이루어진 리니어 압축기의 토출밸브 어셈블리에 있어서, 상기 토출커버는 상기 실린더 일단과 접촉되는 일면의 선삭 가공 면적을 줄이기 위하여 상기 토출커버의 일면 중앙에 상기 실린더 일단과 맞닿는 영역을 제외하고 단차진 홈이 형성되기 때문에 가공 시간을 줄일 수 있어 생산 효율을 높일 수 있다.The present invention is a cylinder formed therein a compression space for compressing the refrigerant sucked as the piston reciprocates linearly therein, and the opposite side is elastically supported by a spring in a state in which one side is in contact with one end of the cylinder, In the discharge valve assembly of the linear compressor comprising a discharge cover that is opened and closed in accordance with the pressure, the discharge cover is in contact with one end of the cylinder in the center of one surface of the discharge cover to reduce the turning area of one surface in contact with the one end of the cylinder Since stepped grooves are formed except for the area, the machining time can be reduced and the production efficiency can be increased.

리니어 압축기, 실린더, 토출밸브 어셈블리, 토출커버, 홈, 선삭Linear compressor, cylinder, discharge valve assembly, discharge cover, groove, turning

Description

리니어 압축기의 토출밸브 어셈블리 {DISCHARGE VALVE ASSEMBLY FOR LINEAR COMPRESSOR} Discharge valve assembly of linear compressor {DISCHARGE VALVE ASSEMBLY FOR LINEAR COMPRESSOR}             

도 1은 종래의 토출커버가 적용된 리니어 압축기의 토출밸브 어셈블리가 도시된 측단면도,1 is a side sectional view showing a discharge valve assembly of a linear compressor to which a conventional discharge cover is applied;

도 2는 본 발명의 토출커버가 적용된 리니어 압축기의 토출밸브 어셈블리가 도시된 측단면도,Figure 2 is a side cross-sectional view showing a discharge valve assembly of the linear compressor to which the discharge cover of the present invention is applied,

도 3은 본 발명에 따른 토출커버의 제작과정이 도시된 측단면도이다.Figure 3 is a side cross-sectional view showing the manufacturing process of the discharge cover according to the present invention.

<도면의 주요 부분에 관한 부호의 설명><Explanation of symbols on main parts of the drawings>

52 : 피스톤 54 : 실린더52: piston 54: cylinder

56 : 흡입밸브 62 : 토출커버56: suction valve 62: discharge cover

62H : 홈 62h : 안착용 홈62H: Groove 62h: Seating Groove

62h' : 안착홈 64 : 토출밸브 스프링62h ': Seating groove 64: Discharge valve spring

66 : 토출캡66: discharge cap

본 발명은 피스톤이 실린더 내부에서 왕복 직선 운동함에 따라 압축공간으로 흡입된 냉매를 압축하고, 압축된 냉매를 토출공간으로 토출하도록 실린더 일단에 토출커버가 개폐 가능하게 설치된 리니어 압축기의 토출밸브 어셈블리에 관한 것으로서, 특히 실린더 일단과 맞닿는 토출커버의 일면에 이루어지는 선삭 공정 면적을 줄임으로 가공 시간을 줄일 수 있는 리니어 압축기의 토출밸브 어셈블리에 관한 것이다.The present invention relates to a discharge valve assembly of a linear compressor in which a refrigerant is compressed into a compression space as a piston reciprocates linearly in a cylinder, and a discharge cover is opened and closed at one end of the cylinder to discharge the compressed refrigerant to the discharge space. In particular, the present invention relates to a discharge valve assembly of a linear compressor capable of reducing processing time by reducing a turning process area formed on one surface of a discharge cover in contact with one end of a cylinder.

일반적으로 압축기(Compressor)는 전기모터나 터빈 등의 동력발생장치로부터 동력을 전달받아 공기나 냉매 또는 그 밖의 다양한 작동가스를 압축시켜 압력을 높여주는 기계장치로써, 냉장고와 에어컨 등과 같은 가전기기 또는 산업전반에 걸쳐 널리 사용되고 있다.In general, a compressor is a mechanical device that increases pressure by receiving power from a power generator such as an electric motor or a turbine to compress air, refrigerant, or various other working gases. It is widely used throughout.

이러한 압축기를 크게 분류하면, 피스톤(Piston)과 실린더(Cylinder) 사이에 작동가스가 흡,토출되는 압축공간이 형성되도록 하여 피스톤이 실린더 내부에서 직선 왕복 운동하면서 냉매를 압축시키는 왕복동식 압축기(Reciprocating compressor)와, 편심 회전되는 롤러(Roller)와 실린더(Cylinder) 사이에 작동가스가 흡,토출되는 압축공간이 형성되도록 하여 롤러가 실린더 내벽을 따라 편심 회전되면서 냉매를 압축시키는 회전식 압축기(Rotary compressor)와, 선회 스크롤(Orbiting scroll)과 고정 스크롤(Fixed scroll) 사이에 작동가스가 흡,토출되는 압축공간이 형성되도록 하여 선회 스크롤이 고정 스크롤을 따라 회전되면서 냉매를 압축시키는 스크롤식 압축기(Scroll compressor)로 나뉘어진다.These compressors are classified into a reciprocating compressor which compresses the refrigerant while linearly reciprocating the inside of the cylinder by forming a compression space in which the working gas is absorbed and discharged between the piston and the cylinder. And a rotary compressor for compressing the refrigerant while the roller is eccentrically rotated along the inner wall of the cylinder to form a compression space in which the working gas is sucked and discharged between the eccentrically rotating roller and the cylinder. As a scroll compressor that compresses the refrigerant while the rotating scroll rotates along the fixed scroll to form a compression space in which the working gas is absorbed and discharged between the orbiting scroll and the fixed scroll. Divided.

최근에는 왕복동식 압축기 중에서 특히 피스톤이 왕복 직선 운동하는 구동모터에 직접 연결되도록 하여 운동전환에 의한 기계적인 손실이 없어 압축효율을 향상시킬 뿐 아니라 구조가 간단한 리니어 압축기가 많이 개발되고 있다.Recently, among the reciprocating compressors, in particular, the piston is directly connected to the reciprocating linear motion drive motor, so that there is no mechanical loss due to the motion conversion to improve the compression efficiency as well as a simple linear compressor has been developed a lot.

도 1은 종래의 토출커버가 적용된 리니어 압축기의 토출밸브 어셈블리가 도시된 측단면도이다.1 is a side cross-sectional view showing a discharge valve assembly of a linear compressor to which a conventional discharge cover is applied.

종래의 토출커버가 적용된 리니어 압축기는 도 1에 도시된 바와 같이 피스톤(2)이 리니어 모터(미도시)에 의해 구동되어 실린더(4) 내부에 왕복 직선 운동하고, 이에 따라 상기 실린더(4)와 피스톤(4) 사이에 형성된 압축공간(P)으로 흡입된 냉매를 압축시킨 다음, 상기 실린더(4) 일단에 형성된 토출공간(D)으로 토출시키되, 상기 실린더(4) 일단을 막아주도록 토출커버(12)가 설치되는 동시에 상기 실린더(4) 일단에 상기 토출공간(D)을 형성하도록 토출캡(16)이 설치되며, 상기 토출커버(12) 및 토출캡(16) 사이에 나선형의 토출밸브 스프링(14)이 설치되어 상기 압축공간(P)의 내부 압력에 따라 상기 토출커버(12)가 개폐되도록 조절된다.In the conventional linear compressor to which the discharge cover is applied, as shown in FIG. 1, the piston 2 is driven by a linear motor (not shown) to reciprocate linearly inside the cylinder 4, and thus the cylinder 4 and The refrigerant sucked into the compression space (P) formed between the piston (4) is compressed, and then discharged into the discharge space (D) formed in one end of the cylinder 4, the discharge cover to block the end of the cylinder (4) ( A discharge cap 16 is installed to form the discharge space D at one end of the cylinder 4 at the same time as the 12 is installed, and a spiral discharge valve spring is formed between the discharge cover 12 and the discharge cap 16. 14 is installed and controlled to open and close the discharge cover 12 in accordance with the internal pressure of the compression space (P).

물론, 상기 피스톤(2) 및 실린더(4) 사이에 냉매가 압축될 수 있도록 압축공간(P)이 형성되고, 상기 피스톤(2) 끝단에는 상기 압축공간(P)으로 냉매가 흡입될 수 있도록 홀(2h)이 형성되는 동시에 상기 홀(2h)을 개폐시킬 수 있도록 박형의 흡입밸브(6)가 스크루(S)에 의해 고정 설치되며, 상기 실린더(4) 일단에는 상기 토출캡(16)이 설치되어 상기 압축공간(P)에서 압축된 냉매가 토출되어 일시적으로 저장될 수 있는 토출공간(D)이 형성된다.Of course, a compression space (P) is formed between the piston (2) and the cylinder (4) so that the refrigerant can be compressed, the end of the piston (2) is a hole for the refrigerant to be sucked into the compression space (P) At the same time as 2h is formed, a thin suction valve 6 is fixed by a screw S so as to open and close the hole 2h, and the discharge cap 16 is installed at one end of the cylinder 4. As a result, a discharge space D may be formed in which the refrigerant compressed in the compression space P may be discharged and temporarily stored.

이때, 상기 흡입밸브(6) 및 토출커버(12)는 상기 압축공간(P)의 내부 압력에 따라 개폐가 조절된다.At this time, the suction valve 6 and the discharge cover 12 is opened and closed according to the internal pressure of the compression space (P).

특히, 상기 토출커버(12)는 상기 압축공간(P) 및 토출공간(D) 측의 고압에서도 견딜 수 있도록 엔지니어링 플라스틱의 일종인 피크 재질이 사용되되, 상기 압축공간(P) 측의 일면(12A)이 상기 실린더(4) 일단과 맞닿도록 평평하게 형성되는 동시에 상기 피스톤(2)이 상기 실린더(4) 내부에서 상사점에 도달하더라도 상기 스크루(S)의 머리와 간섭되지 않도록 중앙에 안착용 홈(12h)이 형성되고, 그와 반대되는 상기 토출공간(D) 측의 반대면(12B)이 중앙으로 갈수록 더 볼록하게 형성되는 동시에 상기 토출밸브 스프링(14)이 안착될 수 있도록 링 형상의 안착홈(12h')이 단차지게 형성된다.In particular, the discharge cover 12 is a peak material which is a kind of engineering plastic is used to withstand the high pressure of the compression space (P) and the discharge space (D) side, one surface 12A of the compression space (P) side ) Is formed flat to contact one end of the cylinder (4) at the same time, even if the piston (2) reaches the top dead center inside the cylinder (4), the mounting groove in the center so as not to interfere with the head of the screw (S) 12h is formed, and the opposite surface 12B on the side of the discharge space D is formed to be more convex toward the center thereof, and at the same time, a ring-shaped seating is provided so that the discharge valve spring 14 can be seated. The groove 12h 'is formed stepped.

아울러, 상기 실린더(4) 일단과 접촉되는 토출커버(12)의 일면이 선삭 공정을 거쳐 평면도를 높임으로 상기 토출커버(12)의 일면이 상기 실린더(4) 일단에 밀착되도록 하여 냉매가 누설되는 것을 방지한다.In addition, one surface of the discharge cover 12 in contact with one end of the cylinder 4 is raised by a turning process so that one surface of the discharge cover 12 is in close contact with one end of the cylinder 4 so that the refrigerant leaks. To prevent them.

물론, 상기 토출커버의 일면(12A)은 상기 실린더(4) 일단에 접촉됨에 따라 그 접촉면이 링 형상으로 형성되지만, 그 접촉면만 선삭 가공하기 어렵기 때문에 상기 토출커버의 일면(12A)을 모두 선삭 가공하게 된다.Of course, one surface 12A of the discharge cover is in contact with one end of the cylinder 4, but the contact surface is formed in a ring shape, but since only the contact surface is difficult to turn, all one surface 12A of the discharge cover is turned. Processing.

따라서, 냉매 토출 과정을 살펴보면, 상기 피스톤(2)이 실린더(4) 내부에서 왕복 직선 운동함에 따라 상기 압축공간(P)의 내부 압력이 설정 토출압력 미만인 경우, 상기 토출커버(12)는 상기 토출밸브 스프링(14)의 탄성력에 의해 상기 실린더(4) 일단에 밀착됨으로 냉매가 토출되지 않는 반면, 상기 압축공간(P)의 내부 압력이 설정 토출압력 이상인 경우, 상기 토출커버(12)는 상기 토출밸브 스프링(14) 이 압축되어 상기 실린더(4) 일단을 개방시킴으로 압축된 냉매가 토출되도록 한다.Therefore, in the refrigerant discharge process, when the internal pressure of the compression space P is lower than the set discharge pressure as the piston 2 reciprocates linearly in the cylinder 4, the discharge cover 12 discharges the discharge. While the refrigerant is not discharged due to close contact with one end of the cylinder 4 by the elastic force of the valve spring 14, when the internal pressure of the compression space P is equal to or greater than a predetermined discharge pressure, the discharge cover 12 discharges the discharge. The valve spring 14 is compressed to open one end of the cylinder 4 so that the compressed refrigerant is discharged.

그러나, 종래 기술에 따른 리니어 압축기의 토출밸브 어셈블리는 상기 실린더(4) 일단에 상기 토출커버(12)가 닫혀진 상태에서 그 사이로 냉매가 누설되는 것을 방지하기 위하여 상기 토출커버의 일면(12A)이 일정한 평면도로 선삭 가공되는데, 상기 토출커버의 일면(12A)이 상기 안착용 홈(12h)을 제외하고 평평하게 형성됨으로 상기 토출커버의 일면(12A) 전체가 선삭 가공되기 때문에 선삭 가공하는 시간이 많이 걸리게 되어 생산효율이 떨어지는 문제점이 있다.However, the discharge valve assembly of the linear compressor according to the prior art has a constant surface 12A of the discharge cover in order to prevent the refrigerant from leaking therebetween while the discharge cover 12 is closed at one end of the cylinder 4. Although the surface is turned in a plan view, since one surface 12A of the discharge cover is flat except for the mounting groove 12h, the entire surface of the one surface 12A of the discharge cover is turned, so that turning takes much time. There is a problem that the production efficiency falls.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 실린더 일단에 토출커버가 덮여진 상태에서 그 사이로 냉매가 누설되는 것을 방지하기 위하여 실린더 일단과 접촉되는 토출커버의 일부분만 선삭 가공하여 가공시간을 줄임으로 생산효율을 높일 수 있는 리니어 압축기의 토출밸브 어셈블리를 제공하는데 그 목적이 있다.The present invention has been made to solve the problems of the prior art, by turning only a part of the discharge cover in contact with one end of the cylinder in order to prevent the refrigerant from leaking in the state that the discharge cover is covered on one end of the cylinder by The purpose is to provide a discharge valve assembly of a linear compressor that can increase the production efficiency by reducing the processing time.

상기한 과제를 해결하기 위한 본 발명에 따른 리니어 압축기의 토출밸브 어셈블리는 피스톤이 내부에서 왕복 직선 운동함에 따라 흡입된 냉매가 압축되는 압축공간이 내부에 형성된 실린더와, 상기 실린더 일단에 일면이 접촉된 상태에서 스 프링에 의해 반대면이 탄성 지지되어 상기 실린더 내부의 압력에 따라 개폐되는 토출커버를 포함하여 이루어지되, 상기 토출커버는 상기 실린더 일단과 접촉되는 일면의 선삭 가공 면적을 줄이기 위하여 상기 실린더 일면 중앙에 상기 실린더 일단과 맞닿는 영역을 제외하고 단차진 홈이 형성된 것을 특징으로 한다.The discharge valve assembly of the linear compressor according to the present invention for solving the above problems is a cylinder in which a compression space for compressing the refrigerant sucked as the piston reciprocates linearly in the interior and one end of the cylinder is in contact In the state that the opposite surface is elastically supported by the spring is made to include a discharge cover which is opened and closed in accordance with the pressure inside the cylinder, the discharge cover is one surface of the cylinder to reduce the turning area of one surface in contact with one end of the cylinder A stepped groove is formed in the center except for an area in contact with one end of the cylinder.

이하, 본 발명의 실시 예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 2는 본 발명의 토출커버가 적용된 리니어 압축기의 토출밸브 어셈블리가 도시된 측단면도이고, 도 3은 본 발명에 따른 토출커버의 제작과정이 도시된 측단면도이다.Figure 2 is a side cross-sectional view showing a discharge valve assembly of the linear compressor to which the discharge cover of the present invention is applied, Figure 3 is a side cross-sectional view showing the manufacturing process of the discharge cover according to the present invention.

본 발명에 따른 토출커버가 적용된 리니어 압축기의 토출밸브 어셈블리는 도 2에 도시된 바와 같이 피스톤(52)이 실린더(54) 내부에서 왕복 직선 운동하면서 일측에 냉매가 압축되는 압축공간(P)이 형성되고, 상기 실린더(54) 일단에 토출캡(66)이 설치되어 압축된 냉매가 일시적으로 저장되는 토출공간(D)이 형성되며, 상기 실린더(54) 일단을 토출커버(62)가 막아줄 수 있도록 토출밸브 스프링(64)이 상기 토출커버(62) 및 토출캡(66) 사이에 설치되되, 상기 토출커버(62)는 상기 실린더(54) 일단과 맞닿는 일면(62A) 중 상기 실린더(54) 일단과 접촉되는 접촉면(62A')을 제외하고 중앙에 홈(62H)이 형성되어 상기 토출커버의 접촉면(62A')만 선삭 가공이 이루어지도록 한다.As shown in FIG. 2, the discharge valve assembly of the linear compressor to which the discharge cover is applied has a compression space P in which a refrigerant is compressed at one side while the piston 52 reciprocates linearly inside the cylinder 54. The discharge cap 66 is installed at one end of the cylinder 54 to form a discharge space D for temporarily storing the compressed refrigerant, and the discharge cover 62 may block one end of the cylinder 54. A discharge valve spring 64 is installed between the discharge cover 62 and the discharge cap 66 so that the discharge cover 62 is in contact with one end of the cylinder 54. A groove 62H is formed in the center except for the contact surface 62A 'contacting one end so that only the contact surface 62A' of the discharge cover is turned.

여기서, 상기 실린더(54)는 상기 피스톤(52)이 내측에서 왕복 직선 운동하면서 상기 압축공간(P)으로 냉매가 흡입되도록 하되, 상기 피스톤(52) 끝단에 홀 (52h)이 형성됨과 아울러 상기 홀(52h)을 개폐시키도록 박형의 흡입밸브(56)가 스크루(S)에 의해 고정 설치되며, 상기 실린더(54) 일단에는 상기 토출커버(62) 및 토출밸브 스프링(64)과 토출캡(66)으로 이루어진 토출밸브 어셈블리가 설치된다.Here, the cylinder 54 allows the refrigerant to be sucked into the compression space P while the piston 52 reciprocates linearly inward, and a hole 52h is formed at the end of the piston 52 and the hole A thin suction valve 56 is fixedly installed by a screw S to open and close the 52h, and one end of the cylinder 54 has the discharge cover 62, the discharge valve spring 64, and the discharge cap 66. Discharge valve assembly consisting of a) is installed.

물론, 상기 압축공간(P)의 압력에 따라 상기 흡입밸브(56) 및 토출커버(62)가 개폐되면서 냉매를 흡입하거나, 압축된 냉매를 토출시키도록 조절된다.Of course, the suction valve 56 and the discharge cover 62 are opened and closed according to the pressure of the compression space P, so that the refrigerant is sucked or the compressed refrigerant is discharged.

특히, 상기 토출커버(62)는 엔지니어링 플라스틱의 일종으로 비교적 고강도 특성을 지닌 피크(PEEK) 재질로 제작되는데, 상기 압축공간(P) 측에 상기 실린더(54) 일단에 맞닿는 일면(62A)이 평평하게 형성되는 동시에 상기 실린더(54) 일단과 접촉되는 접촉면을 제외한 중앙 부분에 단자지게 홈(62H)이 형성되는 반면, 상기 토출공간(D) 측에 상기 토출밸브 스프링(64)이 탄성 지지되는 반대면(62B)이 중앙으로 갈수록 볼록하게 형성된다.Particularly, the discharge cover 62 is a kind of engineering plastic, and is made of PEEK material having relatively high strength characteristics. One side surface 62A of the cylinder 54 is flat on the compression space P side. While the groove 62H is formed in the center portion except for the contact surface which is in contact with one end of the cylinder 54 at the same time, the discharge valve spring 64 is elastically supported on the discharge space D side. The surface 62B is convexly formed toward the center.

이때, 상기 홈(62H)은 그 직경이 상기 실린더(54)의 내경보다 더 작게 형성되는 동시에 그 깊이는 전체 토출커버(62)의 강도를 고려하여 선삭 공정에 요구되는 목표 평면도보다 소정 공차를 두고 더 크도록 설정되는 것이 바람직하다.At this time, the groove 62H has a diameter smaller than the inner diameter of the cylinder 54 and the depth thereof has a predetermined tolerance than the target plan required for the turning process in consideration of the strength of the entire discharge cover 62. It is preferred to be set larger.

또한, 상기 피스톤(52)이 상기 실린더(54) 내부에서 상사점(Top dead center)에 도달하더라도 상기 스크루(S) 머리가 상기 토출커버의 일면(62A)과 간섭되지 않고 그 내측에 안착될 수 있도록 상기 토출커버의 홈(62H) 중앙에는 안착용 홈(62h)이 더 형성되고, 상기 토출커버의 반대면(62B) 중앙에는 상기 토출밸브 스프링(64)의 일단이 안착될 수 있도록 링 형상의 안착홈(62h')이 단차지게 형성된다.In addition, even if the piston 52 reaches the top dead center in the cylinder 54, the screw S may be seated inside the discharge cover without interfering with one surface 62A of the discharge cover. A seating groove 62h is further formed in the center of the groove 62H of the discharge cover, and a ring-shaped shape is formed so that one end of the discharge valve spring 64 may be seated in the center of the opposite surface 62B of the discharge cover. The seating groove 62h 'is formed stepped.

이때, 상기 안착용 홈(62h)은 그 직경이 상기 홈(62H)의 직경보다 더 작은 동시에 상기 스크루(S) 머리의 직경보다 더 크게 형성되며, 그 깊이 역시 상기 스크루(S) 머리의 높이보다 더 크게 형성되는 것이 바람직하다.At this time, the seating groove 62h is smaller than the diameter of the groove 62H and at the same time larger than the diameter of the head of the screw (S), the depth is also greater than the height of the head of the screw (S) It is desirable to form larger.

상기와 같이 형성된 토출커버의 제작과정을 도 3을 참고로 하여 살펴보면, (a)에 도시된 바와 같이 평평한 원형 일면(62A) 및 중앙으로 갈수록 볼록한 원형 반대면(62B)을 가질 뿐 아니라 반대면(62B) 중앙에 링 형상의 안착홈(62h')이 단차지게 형성되도록 피크 재질로 사출 성형된 다음, (b)에 도시된 바와 같이 일면(62A) 중앙에 상기 실린더(54) 내경보다 소정 간격 더 작은 직경을 가질 뿐 아니라 선삭 공정에서 요구되는 목표 평면도보다 소정 공차 더 깊은 깊이를 가진 원형의 홈(62H)이 형성되는 동시에 그 이외의 부분에는 링 형상의 접촉면(62A')이 형성된다.Looking at the manufacturing process of the discharge cover formed as described above with reference to Figure 3, as shown in (a) has a flat circular one surface (62A) and a convex circular opposite surface (62B) toward the center as well as the opposite surface ( 62B) Injection molding is made of a peak material so that a ring-shaped seating groove 62h 'is formed stepped at the center, and then, as shown in (b), a predetermined distance from the inner diameter of the cylinder 54 to the center of one surface 62A. A circular groove 62H having not only a small diameter but also having a predetermined tolerance deeper than the target plan view required in the turning process is formed, while the other portion is formed with a ring-shaped contact surface 62A '.

이후, (c)에 도시된 바와 같이 홈(62H) 중앙에 상기 스크루(S) 머리의 직경 및 높이보다 일정 간극만큼 더 큰 직경 및 깊이를 가진 원형의 안착용 홈(62h)이 형성된 다음, 상기 토출커버(62)는 상기 접촉면(62A')만 래핑(Lapping) 등과 같은 선삭 공정을 거치면서 목표 평면도를 가지도록 가공됨으로 가공면적이 줄어듦에 따라 가공시간이 줄어들게 된다.Thereafter, as shown in (c), a circular seating groove 62h having a diameter and depth larger than a diameter and height of the head of the screw S is formed in the center of the groove 62H, and then the Since the discharge cover 62 is processed to have a target plan view while only the contact surface 62A 'is subjected to a turning process such as lapping, the machining time is reduced as the processing area is reduced.

상기와 같이 제작된 토출커버(62)는 그 접촉면(62A')이 상기 실린더(54) 일단에 밀착되도록 접촉된 상태에서 상기 토출밸브 스프링(64)에 의해 개폐 조절되기 때문에 상기 토출커버(62) 및 실린더(54) 일단이 접촉된 상태에서 그 사이로 냉매가 누설되는 것을 방지할 수 있다.The discharge cover 62 manufactured as described above is controlled to be opened and closed by the discharge valve spring 64 while the contact surface 62A 'is in close contact with one end of the cylinder 54. And it is possible to prevent the refrigerant from leaking in between the one end of the cylinder 54 in contact.

이상에서, 본 발명은 본 발명의 실시예 및 첨부도면에 기초하여 예로 들어 상세하게 설명하였다. 그러나, 이상의 실시예들 및 도면에 의해 본 발명의 범위가 제한되지는 않으며, 본 발명의 범위는 후술한 특허청구범위에 기재된 내용에 의해서만 제한될 것이다.In the above, the present invention has been described in detail by way of examples based on the embodiments of the present invention and the accompanying drawings. However, the scope of the present invention is not limited by the above embodiments and drawings, and the scope of the present invention will be limited only by the contents described in the claims below.

상기와 같이 구성되는 본 발명에 따른 리니어 압축기의 토출밸브 어셈블리는 실린더 일단에 토출커버가 덮여진 상태에서 그 사이로 냉매가 누설되는 것을 방지하기 위하여 실린더 일단과 접촉되는 토출커버의 일부분을 제외하고 그 이외의 부분에 홈을 형성한 다음, 토출커버의 일면을 선삭 가공하기 때문에 토출커버 일면 중 링 형상의 둘레 부분만 선삭 가공됨으로 가공시간이 줄어들어 생산효율이 높아지는 이점이 있다.The discharge valve assembly of the linear compressor according to the present invention configured as described above except for a part of the discharge cover which is in contact with one end of the cylinder in order to prevent the refrigerant from leaking therebetween while the discharge cover is covered at one end of the cylinder. Since a groove is formed in the portion of the discharge cover, the surface of the discharge cover is turned, so that only a peripheral portion of the ring shape of the discharge cover is turned, thereby reducing machining time and increasing production efficiency.

Claims (3)

피스톤이 내부에서 왕복 직선 운동함에 따라 흡입된 냉매가 압축되는 압축공간이 내부에 형성된 실린더와,A cylinder having a compression space formed therein to compress the sucked refrigerant as the piston reciprocates linearly therein; 상기 실린더 일단에 일면이 접촉된 상태에서 스프링에 의해 반대면이 탄성 지지되어 상기 실린더 내부의 압력에 따라 개폐되는 토출커버를 포함하여 이루어진 리니어 압축기의 토출밸브 어셈블리에 있어서,In the discharge valve assembly of the linear compressor comprising a discharge cover which is elastically supported on the opposite side by a spring in a state in which one surface is in contact with one end of the cylinder and opened and closed according to the pressure inside the cylinder, 상기 토출커버는 상기 실린더 일단과 접촉되는 일면의 선삭 가공 면적을 줄이기 위하여 상기 토출커버의 일면 중앙에 상기 실린더 일단과 맞닿는 영역을 제외하고 단차진 홈이 형성된 것을 특징으로 하는 리니어 압축기의 토출밸브 어셈블리.The discharge cover is a discharge valve assembly of the linear compressor, characterized in that the stepped groove is formed in the center of one surface of the discharge cover in order to reduce the turning area of the one surface in contact with the one end of the cylinder except for the area in contact with the one end of the cylinder. 제 1 항에 있어서,The method of claim 1, 상기 홈은 상기 토출커버의 일면 중앙에 상기 실린더 내경보다 더 작은 직경을 가지도록 형성된 것을 특징으로 하는 리니어 압축기의 토출밸브 어셈블리.The groove is the discharge valve assembly of the linear compressor, characterized in that formed in the center of one surface of the discharge cover to have a diameter smaller than the inner diameter of the cylinder. 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 피스톤 끝단에 냉매가 상기 흡입공간으로 유입될 수 있도록 하는 홀이 형성되는 동시에 상기 홀을 막아주는 박형의 흡입밸브가 스크루에 의해 고정되고, A hole is formed at the end of the piston to allow refrigerant to flow into the suction space, and a thin suction valve that blocks the hole is fixed by a screw. 상기 피스톤이 상기 실린더 내부에서 상사점에 도달하더라고 상기 스크루가 간섭되지 않고 안착될 수 있도록 상기 토출커버의 홈 중앙에 안착용 홈이 형성된 것을 특징으로 하는 리니어 압축기의 토출밸브 어셈블리.And a seating groove is formed in the center of the groove of the discharge cover so that the screw can be seated without interference even when the piston reaches the top dead center in the cylinder.
KR1020050007577A 2005-01-27 2005-01-27 Discharge valve assembly for linear compressor KR100615799B1 (en)

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