KR100690906B1 - Device for protecting remove of buffer spring in reciprocating compressor - Google Patents

Device for protecting remove of buffer spring in reciprocating compressor Download PDF

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Publication number
KR100690906B1
KR100690906B1 KR1020050058529A KR20050058529A KR100690906B1 KR 100690906 B1 KR100690906 B1 KR 100690906B1 KR 1020050058529 A KR1020050058529 A KR 1020050058529A KR 20050058529 A KR20050058529 A KR 20050058529A KR 100690906 B1 KR100690906 B1 KR 100690906B1
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South Korea
Prior art keywords
piston
spring
suction
valve
suction valve
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KR1020050058529A
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Korean (ko)
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안지용
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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
    • F04B39/10—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
    • F04B39/0005—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
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0044—Pulsation and noise damping means with vibration damping supports
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
    • F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
    • F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
    • F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
    • F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
    • 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
    • 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
    • F05B2260/50—Kinematic linkage, i.e. transmission of position
    • F05B2260/502—Kinematic linkage, i.e. transmission of position involving springs
    • 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
    • F05B2260/96—Preventing, counteracting or reducing vibration or noise
    • F05B2260/962—Preventing, counteracting or reducing vibration or noise by means creating "anti-noise"
    • 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
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/22—Pumps
    • 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)
  • Compressor (AREA)

Abstract

A device for preventing separation of buffer springs in a reciprocating compressor is provided to fix buffering springs between a piston and a suction valve by a spring fixing ring, thereby preventing deviation of the buffering springs even in spite of excessive opening of the suction valve, thereby realizing stable buffering of collision force between the piston and the suction valve by the buffering springs. A device for preventing separation of buffer springs in a reciprocating compressor includes a piston(110) reciprocating in a compression space of a cylinder to inhale and compress refrigerant. A suction valve(120) has a fixed part fixed to a front end surface of the piston and an opening/closing part connected to or disconnected from the front end surface of the piston for opening or closing a suction path(111) to control suction of the refrigerant into the compression space. Each buffering spring(130) is inserted into each suction hole(112) formed at the front end surface of the piston to elastically support the suction valve when the suction valve is closed. Each spring fixing ring(140) presses and supports each of the buffering springs against the suction holes of the piston to prevent deviation of the buffering springs from the suction holes.

Description

왕복동식 압축기의 완충스프링 이탈 방지 장치{DEVICE FOR PROTECTING REMOVE OF BUFFER SPRING IN RECIPROCATING COMPRESSOR}DEVICE FOR PROTECTING REMOVE OF BUFFER SPRING IN RECIPROCATING COMPRESSOR}

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

도 2는 종래 왕복동식 압축기의 피스톤과 흡입밸브를 보인 분해사시도,2 is an exploded perspective view showing a piston and a suction valve of a conventional reciprocating compressor;

도 3은 종래 왕복동식 압축기에서 완충스프링의 이탈 과정을 보인 종단면도,Figure 3 is a longitudinal sectional view showing a departure process of the buffer spring in the conventional reciprocating compressor,

도 4는 본 발명 왕복동식 압축기에서 피스톤과 흡입밸브와 완충스프링 그리고 스프링고정링을 보인 분해사시도,Figure 4 is an exploded perspective view showing a piston, a suction valve and a buffer spring and a spring fixing ring in the reciprocating compressor of the present invention,

도 5a 및 도 5b는 본 발명 왕복동식 압축기에서 흡입밸브의 개폐상태를 보인 개략도,Figure 5a and Figure 5b is a schematic view showing the opening and closing state of the suction valve in the reciprocating compressor of the present invention,

도 6은 본 발명 왕복동식 압축기에서 피스톤과 흡입밸브와 완충스프링 그리고 스프링고정링의 변형예를 보인 분해사시도,Figure 6 is an exploded perspective view showing a modification of the piston, the suction valve and the buffer spring and the spring fixing ring in the reciprocating compressor of the present invention,

도 7은 본 발명 왕복동식 압축기에서 스프링고정링의 변형예를 보인 사시도.7 is a perspective view showing a modification of the spring fixing ring in the reciprocating compressor of the present invention.

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

110 : 피스톤 111 : 흡입통로110: piston 111: suction passage

112 : 흡입통구 113 : 스프링장착홈112: suction port 113: spring mounting groove

120 : 흡입밸브 122 : 개폐부120: intake valve 122: opening and closing portion

130 : 완충스프링 140 : 스프링고정링130: buffer spring 140: spring fixing ring

본 발명은 왕복동식 압축기에 관한 것으로, 특히 피스톤에 장착하여 흡입밸브의 밸브타음과 밸브파손을 줄이고자 한 완충스프링이 피스톤에서 이탈하는 것을 방지하는 왕복동식 압축기의 완충스프링 이탈 방지 장치에 관한 것이다.The present invention relates to a reciprocating compressor, and more particularly, to a shock absorbing device of the reciprocating compressor to prevent the damping spring to be released from the piston to reduce the valve sound and valve damage of the intake valve mounted on the piston.

일반적으로 왕복동식 압축기는 가동자가 직선으로 왕복운동을 하는 왕복동모터를 구비하고, 그 왕복동모터의 가동자에 피스톤이 결합하여 실린더의 내부에서 직선으로 왕복운동을 하면서 가스를 흡입 압축하여 토출시키는 것으로, 도 1은 종래 왕복동식 압축기의 일례를 보인 종단면도이다.In general, a reciprocating compressor is provided with a reciprocating motor in which the mover linearly reciprocates, and a piston is coupled to the mover of the reciprocating motor to suck and compress gas while discharging the gas while reciprocating in a straight line inside the cylinder, 1 is a longitudinal sectional view showing an example of a conventional reciprocating compressor.

이에 도시한 바와 같이 종래의 왕복동식 압축기는, 가스흡입관(SP) 및 가스토출관(DP)을 연통하는 케이싱(10)과, 케이싱(10)의 내부에 탄력 지지하여 설치하는 프레임유니트(20)와, 프레임유니트(20)에 지지하여 케이싱(10)의 내부에 설치하는 왕복동모터(30)와, 왕복동모터(30)에 기구적으로 연결하여 냉매를 흡입 압축하는 압축유니트(40)와, 압축유니트(40)의 피스톤을 탄력 지지하여 공진을 유도하는 공진스프링유니트(50)로 구성하고 있다.As shown in the drawing, a conventional reciprocating compressor includes a casing 10 communicating gas suction pipes SP and gas discharge pipes DP, and a frame unit 20 elastically supported inside the casing 10. And a reciprocating motor 30 supported by the frame unit 20 and installed in the casing 10, and a compression unit 40 mechanically connected to the reciprocating motor 30 to suck and compress refrigerant. A resonant spring unit 50 that elastically supports the piston of the unit 40 to induce resonance.

압축유니트(40)는 프레임유니트(20)의 전방프레임(21)에 고정 설치하는 실린더(41)와, 왕복동모터(30)의 가동자(33)에 결합하여 실린더(41)의 압축공간(P)에서 왕복운동을 하면서 냉매를 흡입 압축하는 피스톤(42)과, 피스톤(42)의 선단에 장착하여 그 피스톤(42)의 흡입통구(42b)를 개폐하면서 냉매가스의 흡입을 제한하는 흡 입밸브(43)와, 실린더(41)의 토출측에 장착하여 압축공간(P)을 개폐하면서 압축가스의 토출을 제한하는 토출밸브(44)와, 토출밸브(44)를 탄력적으로 지지하는 밸브스프링(45)과, 토출밸브(44)와 밸브스프링(45)을 수용하도록 실린더(42)의 토출측을 복개하여 전방프레임(21)에 고정하는 토출커버(46)로 이루어져 있다.The compression unit 40 is coupled to the cylinder 41 fixed to the front frame 21 of the frame unit 20 and the mover 33 of the reciprocating motor 30 to compress the space P of the cylinder 41. Piston 42 for sucking and compressing the refrigerant while reciprocating in the) and the suction valve which is attached to the tip of the piston 42 to limit the suction of the refrigerant gas while opening and closing the suction port 42b of the piston 42 (43), a discharge valve (44) mounted on the discharge side of the cylinder (41) to limit the discharge of compressed gas while opening and closing the compression space (P), and a valve spring (45) for elastically supporting the discharge valve (44). And a discharge cover 46 which covers the discharge side of the cylinder 42 to accommodate the discharge valve 44 and the valve spring 45 and fixes it to the front frame 21.

피스톤(42)은 도 2에서와 같이 그 내부에 관통 형성하는 흡입통로(42a)와, 흡입통로(42a)의 끝단에서 피스톤(42)의 선단면으로 여러 개 관통 형성하는 흡입통구(42b)로 이루어져 있다. 또, 흡입통구(42b)에는 흡입밸브(43)의 개폐시 그 흡입밸브(43)가 피스톤(42)의 선단면에 강하게 충돌하는 것을 방지하도록 완충스프링(47)을 장착하고 있다.The piston 42 is a suction passage 42a formed therethrough as shown in FIG. 2, and a plurality of suction passages 42b formed through the end surface of the piston 42 at the end of the suction passage 42a. consist of. In addition, the suction port 42b is provided with a shock absorbing spring 47 so as to prevent the suction valve 43 from colliding strongly with the front end surface of the piston 42 when the suction valve 43 is opened or closed.

흡입밸브(43)는 강탄성 재질로 형성하는 것으로 중앙에는 피스톤(42)의 선단면에 고정하는 고정부(43a)를 형성하고 그 고정부(43a)의 가장자리에는 피스톤(42)의 흡입통구(42b)를 개폐하도록 "양팔"모양으로 연장하는 개폐부(43b)를 형성하고 있다.The suction valve 43 is formed of a rigid elastic material and forms a fixing portion 43a fixed to the front end surface of the piston 42 at the center thereof, and an inlet port of the piston 42 at the edge of the fixing portion 43a. The opening-and-closing portion 43b extending in a "both arms" shape is formed to open and close 42b).

도면중 미설명 부호인 21은 전방프레임, 22는 중간프레임, 23은 후방 프레임, 31은 외측고정자, 32는 내측고정자, 42d는 체결홈, 43c는 체결공, 60은 지지스프링유니트, 61 및 62는 제1 및 제2 지지스프링, B는 체결볼트, SP는 가스흡입관, DP는 가스토출관, RP는 루프파이프이다.In the figures, 21 is a front frame, 22 is an intermediate frame, 23 is a rear frame, 31 is an outer stator, 32 is an inner stator, 42d is a fastening groove, 43c is a fastening hole, 60 is a support spring unit, 61 and 62 Is the first and second support springs, B is a fastening bolt, SP is a gas suction pipe, DP is a gas discharge pipe, and RP is a loop pipe.

상기와 같은 종래 왕복동식 압축기는 다음과 같이 동작된다.The conventional reciprocating compressor as described above is operated as follows.

즉, 왕복동모터(30)에 전원을 인가하면, 그 왕복동모터의 외측고정자(31)와 내측고정자(32) 사이에 플럭스(flux)가 형성되어 가동자(33)가 플럭스의 방향에 따 라 움직이면서 공진스프링유니트(50)에 의해 직선으로 왕복운동을 하고, 이와 함께 피스톤(42)이 실린더(41)의 내부에서 직선으로 왕복운동을 하면서 그 실린더(41)의 압축공간(P)에 압력차를 발생시킴으로써 냉매를 가스흡입관(SP)을 통해 상기한 압축공간(P)으로 흡입하여 일정 압력까지 압축하였다가 가스토출관(DP)을 통해 토출하는 일련의 과정을 반복한다.That is, when power is applied to the reciprocating motor 30, a flux is formed between the outer stator 31 and the inner stator 32 of the reciprocating motor, and the mover 33 moves along the direction of the flux. The resonant spring unit 50 reciprocates in a straight line, while the piston 42 reciprocates in a straight line in the cylinder 41, and a pressure difference is applied to the compression space P of the cylinder 41. By generating it, the refrigerant is sucked into the compression space P through the gas suction pipe SP, compressed to a predetermined pressure, and then discharged through the gas discharge pipe DP.

여기서, 냉매가 흡입되는 과정에서는 피스톤(42)이 후방측으로 이동을 함에 따라 흡입밸브(43)의 개폐부(43b)가 고정부(43a)를 중심으로 휘어지면서 흡입통구(42b)를 개방하는 반면 냉매가 압축되는 과정에서는 피스톤(42)이 전방측으로 이동함에 따라 흡입밸브(43)의 개폐부(43b)가 고정부(43a)를 중심으로 복원되면서 흡입통구(42b)를 폐쇄하는데, 이때 흡입밸브(42)의 개폐부(43b)가 피스톤(42)의 선단면에 강하게 충돌하면서 높은 밸브타음을 유발하거나 밸브파손을 유발할 우려가 있었으나 상기 흡입통구(42b)에 완충스프링(47)을 구비함에 따라 상기한 흡입밸브(43)가 피스톤(42)에 강하게 충돌하는 것을 막아 소음이나 밸브의 파손을 방지하는 것이었다.Here, in the process of inhaling the refrigerant, as the piston 42 moves to the rear side, the opening / closing portion 43b of the intake valve 43 bends around the fixing portion 43a to open the intake port 42b while the refrigerant is In the process of compressing, as the piston 42 moves to the front side, the opening and closing portion 43b of the suction valve 43 is restored to the center of the fixing portion 43a and closes the suction port 42b, in which case the suction valve 42 (B) strongly impacts the tip end surface of the piston (42), causing high valve sounding or valve damage. However, the suction hole (42b) has a shock absorbing spring (47). The valve 43 was prevented from colliding strongly with the piston 42 to prevent noise or damage to the valve.

그러나, 상기와 같은 종래 왕복동식 압축기에 있어서, 압축기의 정상운전시에는 완충스프링(47)의 선단이 흡입밸브(43)에 접촉한 상태에서 신축되므로 이탈될 우려가 없으나, 도 3에서와 같이 압축공간(P)으로 액냉매가 유입되어 흡입밸브(43)가 과도하게 열리는 경우에는 상기 완충스프링(47)이 흡입통구(42b)에서 이탈되어 흡입밸브(43)와 피스톤(42)의 충돌로 인한 밸브타음이나 밸브파손이 야기되는 문제점이 있었다.However, in the conventional reciprocating compressor as described above, since the tip of the shock absorbing spring 47 is expanded and contracted in contact with the suction valve 43 during normal operation of the compressor, there is no fear of detachment, as shown in FIG. 3. When the liquid refrigerant flows into (P) and the suction valve 43 is excessively opened, the buffer spring 47 is separated from the suction port 42b and the valve due to the collision between the suction valve 43 and the piston 42 is caused. There was a problem that caused a sound break or valve damage.

본 발명은 상기와 같은 종래 왕복동식 압축기가 가지는 문제점을 감안하여 안출한 것으로, 흡입밸브의 개폐시 완충스프링이 이탈되지 못하도록 하여 흡입밸브와 피스톤의 충돌로 인한 밸브타음과 밸브파손을 미연에 방지할 수 있는 왕복동식 압축기의 완충스프링 이탈 방지 장치를 제공하려는데 본 발명의 목적이 있다.The present invention has been made in view of the problems of the conventional reciprocating compressor as described above, it is possible to prevent the valve spring and valve damage due to the collision of the suction valve and the piston by preventing the buffer spring from being separated during opening and closing of the suction valve. SUMMARY OF THE INVENTION An object of the present invention is to provide a shock absorbing spring departure preventing device of a reciprocating compressor.

본 발명의 목적을 달성하기 위하여, 왕복동모터의 가동자에 결합하여 실린더의 압축공간에서 직선으로 왕복운동을 하면서 그 내부의 운동방향으로 관통된 흡입유로를 통해 냉매를 흡입 압축하는 피스톤과, 피스톤의 선단면에 일측을 고정하고 타측은 피스톤의 선단면에서 착탈하면서 상기한 흡입유로를 개폐하여 냉매가 압축공간으로 흡입되는 것을 조절하는 흡입밸브와, 피스톤의 선단면에 삽입하여 흡입밸브의 닫힘시 상기한 흡입밸브를 탄력 지지하는 완충스프링과, 완충스프링의 이탈을 방지하도록 함께 압입하여 지지하는 스프링고정링을 포함한 왕복동식 압축기의 완충스프링 이탈 방지 장치를 제공한다.In order to achieve the object of the present invention, the piston coupled to the mover of the reciprocating motor and reciprocating linearly in the compression space of the cylinder to suck and compress the refrigerant through the suction flow passage penetrated therein, One side is fixed to the front end and the other side is detached from the front end of the piston while opening and closing the suction flow path to control the refrigerant is sucked into the compression space, and inserted into the front end of the piston when the inlet valve is closed A shock absorbing spring release preventing device for a reciprocating compressor including a shock absorbing spring for elastically supporting a suction valve and a spring retaining ring press-fitted and supported together to prevent separation of the shock absorbing spring.

이하, 본 발명에 의한 왕복동식 압축기의 완충스프링 이탈 방지 장치를 첨부도면에 도시한 일실시예에 의거하여 상세하게 설명한다.EMBODIMENT OF THE INVENTION Hereinafter, the buffer spring release prevention apparatus of the reciprocating compressor by this invention is demonstrated in detail based on one Example shown in an accompanying drawing.

도 4는 본 발명 왕복동식 압축기에서 피스톤과 흡입밸브와 완충스프링 그리고 스프링고정링을 보인 분해사시도이고, 도 5는 본 발명 왕복동식 압축기에서 피스톤과 흡입밸브와 완충스프링 그리고 스프링고정링 조립한 상태를 보인 종단면도이며, 도 6a 및 도 6b는 본 발명 왕복동식 압축기에서 흡입밸브의 개폐상태를 보인 개략도이고, 도 7은 본 발명 왕복동식 압축기에서 피스톤과 흡입밸브와 완충스프링 그리고 스프링고정링의 변형예를 보인 분해사시도이며, 도 8은 본 발명 왕복동식 압축기에서 스프링고정링의 변형예를 보인 사시도이다.4 is an exploded perspective view showing a piston, a suction valve, a buffer spring and a spring fixing ring in the reciprocating compressor of the present invention, and FIG. 5 is a state in which the piston, the suction valve, the buffer spring, and the spring fixing ring are assembled in the reciprocating compressor of the present invention. Figure 6a and 6b is a schematic view showing the opening and closing state of the suction valve in the reciprocating compressor of the present invention, Figure 7 is a modified example of the piston, the suction valve and the buffer spring and the spring fixing ring in the reciprocating compressor of the present invention 8 is an exploded perspective view showing a perspective view showing a modification of the spring fixing ring in the reciprocating compressor of the present invention.

이에 도시한 바와 같이 본 발명에 의한 왕복동식 압축기의 완충스프링 이탈 방지 장치는, 실린더(41)의 압축공간(P)에 미끄러지게 삽입하고 그 내부에 흡입유로를 형성하여 왕복동모터(도 1에 도시)(30)의 가동자(33)와 함께 직선으로 왕복운동을 하면서 냉매를 압축공간(P)으로 흡입하여 압축하는 피스톤(110)과, 피스톤(110)의 선단면에 착탈하여 흡입유로의 끝단인 흡입통구(112)를 개폐하는 흡입밸브(120)와, 피스톤(110)의 흡입통구(112)에 삽입하여 흡입밸브(43)의 닫힘시 그 충돌력을 흡수하는 완충스프링(130)과, 완충스프링(130)의 고정단(131)을 눌러 고정하도록 피스톤(110)의 흡입통구(112)에 압입 고정하는 스프링고정링(140)을 포함한다.As shown in the drawing, the shock-absorbing spring escape prevention device of the reciprocating compressor according to the present invention is slidably inserted into the compression space P of the cylinder 41, and a suction flow path is formed therein to form a reciprocating motor (shown in FIG. 1). Piston 110 for sucking and compressing the refrigerant into the compression space (P) while reciprocating in a straight line with the mover (33) of the (30) and the end of the suction flow path detachable to the front end surface of the piston (110) A suction valve 120 for opening and closing the phosphorus suction port 112, a buffer spring 130 inserted into the suction port 112 of the piston 110 to absorb the collision force when the suction valve 43 is closed, And a spring fixing ring 140 press-fitted to the suction port 112 of the piston 110 to press and fix the fixed end 131 of the shock absorbing spring 130.

피스톤(110)은 그 내부에 흡입유로를 이루는 흡입통로(111)를 축방향으로 소정의 깊이만큼 형성하고, 흡입통로(111)의 안쪽 끝단에서 피스톤(110)의 헤드부 선단면까지 상기 흡입통로(111)에 연통하여 관통하도록 수 개의 흡입통구(112)를 형성한다.The piston 110 forms a suction passage 111 constituting the suction passage therein by a predetermined depth in the axial direction, and the suction passage from the inner end of the suction passage 111 to the head end surface of the piston 110. Several suction ports 112 are formed to communicate with the 111.

흡입통구(112)는 흡입밸브(43)의 형상에 따라 다양하게 형성할 수 있는데, 도 4에 도시한 흡입통구(112)는 후술할 흡입밸브(120)의 개폐부(122)가 "양팔"모양의 리드밸브로 이루어지는 점을 감안하여 피스톤(110)의 원주방향을 따라 수 개를 형성한다.The inlet port 112 may be formed in various ways according to the shape of the inlet valve 43. The inlet port 112 shown in FIG. 4 has an opening and closing portion 122 of the inlet valve 120 to be described later. In view of the point consisting of the reed valve of the piston 110 to form a number along the circumferential direction.

흡입밸브(120)는 강탄성 재질로 형성하는 것으로, 중앙에는 피스톤(110)의 선단면 중앙에 고정하는 고정부(121)를 형성하고, 그 고정부(121)의 가장자리에는 피스톤(110)의 흡입통구(112)를 개폐하도록 "양팔"모양으로 연장하는 개폐부(122)를 형성한다.The suction valve 120 is formed of a rigid elastic material, and forms a fixing part 121 fixed at the center of the front end surface of the piston 110 at the center thereof, and an edge of the fixing part 121 of the piston 110 is formed. Opening and closing portion 122 is formed to extend in the "both arms" shape to open and close the suction port 112.

완충스프링(130)은 그 끝단이 흡입통구에서 노출되는 압축코일스프링으로 이루어지되 이 완충스프링(130)의 탄성은 흡입밸브(120)의 닫힘시 그 흡입밸브(120)의 실링배면에 가해지는 압축가스의 가스력 보다는 작도록 하여 압축시 흡입밸브(120)의 개폐부(122)가 들떠 압축가스가 누설되는 것을 방지할 수 있도록 하는 것이 바람직하다. 또 , 완충스프링(130)은 흡입통구(112)가 여러 개인 경우 모든 흡입통구에 장착할 수도 있으나 도 4에서와 같이 흡입밸브(120)의 들뜸현상 등을 고려하여 가장 바깥쪽 양측에만 장착할 수도 있다. 또, 완충스프링(130)은 피스톤(110)에 고정하는 고정단(131)의 외경이 흡입밸브(120)와 접하는 자유단(132)의 외경 보다는 크게 형성하여 상기한 완충스프링(130)의 자유단(132)이 흡입통구(112)에서 자유롭게 드나들 수 있도록 하는 것이 바람직하다.The shock absorbing spring 130 is composed of a compression coil spring whose end is exposed at the suction port, and the elasticity of the shock absorbing spring 130 is applied to the sealing rear surface of the suction valve 120 when the suction valve 120 is closed. It is preferable that the opening and closing portion 122 of the suction valve 120 is lifted to prevent the compressed gas from leaking by being smaller than the gas force of the gas. In addition, the shock absorbing spring 130 may be mounted on all the suction holes if there are several suction holes 112, but may be mounted only on the outermost side in consideration of the lifting phenomenon of the suction valve 120, as shown in FIG. have. In addition, the buffer spring 130 is formed so that the outer diameter of the fixed end 131 fixed to the piston 110 is larger than the outer diameter of the free end 132 in contact with the suction valve 120, the freedom of the buffer spring 130 described above. It is preferable to allow the stage 132 to freely enter and exit the suction port 112.

스프링고정링(140)은 도 4에서와 같이 소정의 두께와 길이를 가지는 원통모양의 부시형상으로 형성하되 그 외경은 흡입통구(112)의 내경에 압입할 수 있고 그 내경은 완충스프링(130)을 안쪽단, 즉 고정단(131)의 외경을 눌러 고정할 수 있는 형상으로 형성한다.Spring fixing ring 140 is formed in the shape of a cylindrical bush having a predetermined thickness and length as shown in Figure 4, the outer diameter can be pressed into the inner diameter of the suction port 112, the inner diameter of the buffer spring 130 The inner end, that is, formed into a shape that can be fixed by pressing the outer diameter of the fixed end (131).

또, 도 7에 도시한 바와 같이 상기한 스프링고정링(140)은 흡입통구(112)의 안쪽에서 완충스프링(130)의 고정단(131)을 지지한 상태에서 반경방향으로 벌어지 면서 탄력적으로 고정되는 스냅링으로 형성할 수도 있다.In addition, as shown in FIG. 7, the spring fixing ring 140 is elastically opened in the radial direction while supporting the fixing end 131 of the shock absorbing spring 130 inside the suction port 112. It may be formed by a snap ring that is fixed.

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 114는 체결홈, 123는 체결공, B는 체결볼트이다.In the drawings, reference numeral 114 denotes a fastening groove, 123 a fastening hole, and B is a fastening bolt.

상기와 같은 본 발명 왕복동식 압축기의 밸브충격 완충장치는 다음과 같은 작용 효과를 갖는다.The valve shock absorber of the reciprocating compressor of the present invention as described above has the following effects.

즉, 왕복동모터(도 1에 도시)(30)의 가동자가 피스톤(110)과 함께 직선으로 왕복운동을 하고, 이와 함께 피스톤(110)이 실린더(41)의 내부에서 직선으로 왕복운동을 하면서 그 실린더(41)의 압축공간(P)에 압력차를 발생시켜 냉매가스를 압축공간(P)으로 흡입하여 압축하였다가 토출하는 일련의 과정을 반복한다.That is, the mover of the reciprocating motor (shown in FIG. 1) 30 reciprocates linearly with the piston 110, and with the piston 110 reciprocates linearly inside the cylinder 41. A pressure difference is generated in the compression space P of the cylinder 41, and a series of processes of sucking and compressing the refrigerant gas into the compression space P is repeated.

여기서, 도 5a에서와 같이 피스톤(110)이 후진하면서 흡입행정을 실시하는 과정에서 흡입밸브(120)의 개폐부(122)는 피스톤(110)의 흡입통로(111)와 흡입통구(112)를 통해 실린더의 압축공간(P)으로 흡입되려는 냉매가스에 밀려 고정부(121)를 중심으로 젖혀지면서 열렸다가 피스톤(110)이 다시 전진하면서 압축행정을 실시하는 과정에서 젖혀졌던 개폐부(122)가 흡입통구(112)를 닫아 압축공간(P)을 밀폐시키게 된다.Here, the opening and closing portion 122 of the suction valve 120 through the suction passage 111 and the suction passage 112 of the piston 110 in the process of performing the suction stroke while the piston 110 is reversed as shown in FIG. The opening and closing portion 122, which was opened while being pushed around the fixing part 121 by being pushed by the refrigerant gas to be sucked into the compression space P of the cylinder, was flipped in the process of performing the compression stroke while the piston 110 was advanced again, the suction port. Closing (112) closes the compression space (P).

이때, 피스톤(110)의 흡입통로(111)와 흡입통구(112)를 통해 액냉매 등이 함께 유입되는 경우 흡입압이 흡입밸브(120)의 설정압력 보다 높아지면서 상기 흡입밸브(120)가 과도하게 열려 완충스프링(130)의 자유단(132)과 이격됨에 따라 상기한 완충스프링(130)이 흡입통구(112)에서 이탈될 우려가 있었으나, 본 발명에서와 같이 완충스프링(130)을 피스톤(110)의 흡입통구(112)에 삽입하여 고정한 후에 상 기한 흡입통구(112)에 별도의 스프링고정링(140)을 압입하여 완충스프링(130)을 더욱 견고하게 고정하는 경우에는 높은 흡입압으로 냉매가 흡입되어 흡입밸브(120)와 완충스프링(130)이 이격되더라도 그 완충스프링(130)이 상기한 스프링고정링(140)에 의해 고정됨에 따라 완충스프링(130)의 이탈을 방지하게 된다.At this time, when the liquid refrigerant and the like are introduced through the suction passage 111 and the suction port 112 of the piston 110, the suction pressure is higher than the set pressure of the suction valve 120 and the suction valve 120 is excessive. As a result of being spaced apart from the free end 132 of the shock absorbing spring 130, the shock absorbing spring 130 may be separated from the suction port 112. However, as in the present invention, the shock absorbing spring 130 may be a piston ( After inserting and fixing to the suction inlet 112 of 110, the spring suction ring 140 is press-fitted into the above-described suction inlet 112 to more firmly fix the buffer spring 130. Even though the suction valve 120 and the buffer spring 130 are spaced apart from each other, the buffer spring 130 is fixed by the spring fixing ring 140 to prevent the buffer spring 130 from being separated.

다음, 도 5b에서와 같이 피스톤(110)이 전진하면서 압축행정을 실시하는 경우에는 흡입밸브(120)가 복원되면서 피스톤(110)의 선단면에 충돌할 수 있으나, 흡입밸브(120)가 흡입통구(112)에 장착한 완충스프링(130)이 충돌력을 흡수하면서 피스톤(110)과 흡입밸브(120) 사이의 충돌에 의한 충격이 현저하게 감소된다.Next, in the case where the piston 110 moves forward as shown in FIG. 5B, the suction valve 120 may be restored and collide with the front end surface of the piston 110, but the suction valve 120 may be a suction port. Shock absorbing by the collision between the piston 110 and the suction valve 120 is significantly reduced while the shock absorbing spring 130 mounted on the (112) absorbs the impact force.

한편, 전술한 일례에서는 완충스프링을 흡입통구에 장착하는 것이었으나, 도 6에서와 같이 상기한 흡입통구(112)를 제외한 부위에 소정의 깊이로 스프링장착홈(113)을 음형지게 형성하여 완충스프링(130)을 설치할 수도 있다. 또, 스프링장착홈(113)은 그 중심이 흡입통구(112)의 중심과 동일 원주상에 형성할 수도 있고, 흡입통구(112)의 중심을 연결하는 가상선 보다 안쪽에 위치시킬 수도 있다. 이 경우에도 완충스프링(130)은 고정단(131) 외경을 자유단(132) 외경 보다 크게 형성하여 그 고정단(131)을 스프링장착홈(113)에서 스프링고정링(140)으로 고정하는 것은 동일하다. 본 실시예에 대한 구체적인 동작은 전술한 일례와 동일하므로 생략한다.On the other hand, in the above-described example was to install the shock absorbing spring to the suction inlet, but as shown in Figure 6 to form a spring mounting groove 113 to a predetermined depth in a portion other than the above-described suction inlet 112, the shock absorbing spring 130 may be provided. In addition, the center of the spring mounting groove 113 may be formed on the same circumference as the center of the suction port 112, or may be located inside the imaginary line connecting the center of the suction port (112). Even in this case, the buffer spring 130 forms the outer diameter of the fixed end 131 larger than the outer diameter of the free end 132 so as to fix the fixed end 131 to the spring fixing ring 140 in the spring mounting groove 113. same. The detailed operation of the present embodiment is the same as the above-described example and will be omitted.

본 발명에 의한 왕복동식 압축기의 완충스프링 이탈 방지 장치는, 피스톤의 선단면과 흡입밸브 사이에 완충스프링을 장착할 때 이 완충스프링의 이탈을 방지하도록 흡입통구 또는 스프링장착홈에 스프링고정링으로 상기한 완충스프링을 눌러 고정함으로써, 흡입밸브가 과도하게 열리더라도 스프링고정링이 완충스프링을 지지하여 완충스프링의 이탈을 방지할 수 있고 이를 통해 흡입밸브의 개폐시 그 흡입밸브와 피스톤 사이의 충돌력을 상기한 완충스프링이 안정적으로 흡수하여 압축기의 신뢰성을 높일 수 있다.The shock absorbing spring release prevention device of the reciprocating compressor according to the present invention, when the shock absorbing spring is mounted between the front end surface of the piston and the suction valve to prevent the departure of the shock absorbing spring by the spring fixing ring in the spring inlet or spring mounting groove By pressing and holding a buffer spring, even if the suction valve is opened excessively, the spring retaining ring can support the buffer spring to prevent the buffer spring from falling off, thereby preventing collision between the suction valve and the piston when opening and closing the suction valve. The buffer spring is stably absorbed to increase the reliability of the compressor.

Claims (6)

왕복동모터의 가동자에 결합하여 실린더의 압축공간에서 직선으로 왕복운동을 하면서 그 내부의 운동방향으로 관통된 흡입유로를 통해 냉매를 흡입 압축하는 피스톤과,A piston which is coupled to the mover of the reciprocating motor and suction-compresses the refrigerant through a suction flow passage penetrated in the movement direction therein while linearly reciprocating in the compression space of the cylinder; 피스톤의 선단면에 일측을 고정하고 타측은 피스톤의 선단면에서 착탈하면서 상기한 흡입유로를 개폐하여 냉매가 압축공간으로 흡입되는 것을 조절하는 흡입밸브와,A suction valve which fixes one side to the front end surface of the piston and opens and closes the suction flow path while being detached from the front end surface of the piston and controls the refrigerant to be sucked into the compression space; 흡입밸브의 닫힘시 그 흡입밸브를 탄력 지지하도록 상기 피스톤의 흡입유로에 그 끝단이 노출되도록 삽입하여 고정하고 상기 피스톤에 고정하는 고정단의 외경을 상기 흡입밸브에 접하는 자유단의 외경보다 크게 형성하는 압축코일스프링으로 된 완충스프링과,Inserting and fixing the end of the piston to the suction flow path of the piston so as to elastically support the suction valve when the suction valve is closed, and the outer diameter of the fixed end fixed to the piston is larger than the outer diameter of the free end in contact with the suction valve Buffer springs with compression coil springs, 완충스프링의 고정단 외경을 눌러 그 완충스프링의 이탈을 방지하도록 상기 피스톤에 함께 압입하여 상기 완충스프링을 고정하는 스프링고정링을 포함한 왕복동식 압축기의 완충스프링 이탈 방지 장치.And a spring fixing ring which presses the outer diameter of the fixed end of the shock absorbing spring to press the piston together to fix the shock absorbing spring to fix the shock absorbing spring. 왕복동모터의 가동자에 결합하여 실린더의 압축공간에서 직선으로 왕복운동을 하면서 그 내부의 운동방향으로 관통된 흡입유로를 통해 냉매를 흡입 압축하고 그 흡입유로를 제외한 부위에 스프링장착홈을 음형지게 형성하는 피스톤과,Combining with the mover of the reciprocating motor, the cylinder reciprocates in a straight line in the compression space of the cylinder and sucks and compresses the refrigerant through the suction flow path penetrated in the direction of movement therein. With the piston made, 피스톤의 선단면에 일측을 고정하고 타측은 피스톤의 선단면에서 착탈하면서 상기한 흡입유로를 개폐하여 냉매가 압축공간으로 흡입되는 것을 조절하는 흡입밸브와,A suction valve which fixes one side to the front end surface of the piston and opens and closes the suction flow path while being detached from the front end surface of the piston and controls the refrigerant to be sucked into the compression space; 흡입밸브의 닫힘시 그 흡입밸브를 탄력 지지하도록 상기 피스톤의 스프링장착홈에 그 끝단이 노출되도록 삽입하여 고정하고 상기 피스톤에 고정하는 고정단의 외경을 상기 흡입밸브에 접하는 자유단의 외경보다 크게 형성하는 압축코일스프링으로 된 완충스프링과,When the intake valve is closed, the outer end of the fixed end fixed to the piston is inserted into the spring mounting groove of the piston so that the end thereof is exposed to the spring mounting groove of the piston and formed to be larger than the outer diameter of the free end contacting the intake valve. Buffer spring with compressed coil spring, 완충스프링의 고정단 외경을 눌러 그 완충스프링의 이탈을 방지하도록 상기 피스톤에 함께 압입하여 상기 완충스프링을 고정하는 스프링고정링을 포함한 왕복동식 압축기의 완충스프링 이탈 방지 장치.And a spring fixing ring which presses the outer diameter of the fixed end of the shock absorbing spring to press the piston together to fix the shock absorbing spring to fix the shock absorbing spring. 삭제delete 삭제delete 제1항 또는 제2항에 있어서,The method according to claim 1 or 2, 스프링고정링은 상기한 흡입유로 또는 스프링장착홈에 압입하여 고정하도록 부시 형상으로 형성하는 것을 특징으로 하는 왕복동식 압축기의 완충스프링 이탈 방지 장치.Spring fixing ring is a buffer spring departure prevention device of the reciprocating compressor, characterized in that formed in the bush shape to be fixed by pressing in the suction flow path or the spring mounting groove. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2, 스프링고정링은 상기한 흡입유로 또는 스프링장착홈에서 벌어지면서 탄력 고정하도록 스냅링 형상으로 형성하는 것을 특징으로 하는 왕복동식 압축기의 완충스프링 이탈 방지 장치.Spring fixing ring is a buffer spring departure prevention device of the reciprocating compressor, characterized in that formed in a snap ring shape to be elastically fixed while opening in the suction flow path or the spring mounting groove.
KR1020050058529A 2005-06-30 2005-06-30 Device for protecting remove of buffer spring in reciprocating compressor KR100690906B1 (en)

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JP2022164632A (en) * 2021-04-16 2022-10-27 文三 周 air compressor
US20220341410A1 (en) * 2021-04-22 2022-10-27 Wen-San Chou Air stop sheet of piston of cylinder

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Publication number Priority date Publication date Assignee Title
JP2022164632A (en) * 2021-04-16 2022-10-27 文三 周 air compressor
JP7482932B2 (en) 2021-04-16 2024-05-14 文三 周 air compressor
US20220341410A1 (en) * 2021-04-22 2022-10-27 Wen-San Chou Air stop sheet of piston of cylinder
JP2022167842A (en) * 2021-04-22 2022-11-04 文三 周 Air stop sheet of piston body of cylinder
JP7397905B2 (en) 2021-04-22 2023-12-13 文三 周 Air stop sheet on cylinder piston body

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