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KR20070075298A - Booster-type gas compressor - Google Patents

Booster-type gas compressor Download PDF

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Publication number
KR20070075298A
KR20070075298A KR1020070002096A KR20070002096A KR20070075298A KR 20070075298 A KR20070075298 A KR 20070075298A KR 1020070002096 A KR1020070002096 A KR 1020070002096A KR 20070002096 A KR20070002096 A KR 20070002096A KR 20070075298 A KR20070075298 A KR 20070075298A
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South Korea
Prior art keywords
piston
compressed gas
booster
crankcase
crankshaft
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KR1020070002096A
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Korean (ko)
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KR100815538B1 (en
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히로시 이노우에
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아네스토 이와타 가부시키가이샤
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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
    • 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
    • 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
    • F04B39/128—Crankcases
    • 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
    • F04B39/121—Casings
    • 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
    • F04B39/123—Fluid connections
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/18—Pressure in a control cylinder/piston unit
    • 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
    • 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
    • Y10S417/00—Pumps

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

Abstract

부스터-타입 가스 컴프레서에서, 모터 케이스 내의 전기 모터는 구동 샤프트에 일체로 연결되는 크랭크 샤프트를 구동한다. 크랭크 샤프트는 상기 크랭크 샤프트에 수직하게 연장되고 상단부에 피스톤을 가지고 있는 피스톤 로드에 연결된다. 크랭크 샤프트가 회전되면 피스톤이 상하로 이동된다. 압축 가스 유로로부터의 압축 가스는 상기 피스톤 상부의 압축 챔버에 공급되고 피스톤에 의하여 추가로 압축된다. 바이패스 도관은 크랭크 케이스 내의 압력을 대기압 이상으로 유지하도록 압축 가스 유로를 모터 케이스에 연결시킨다.In a booster-type gas compressor, the electric motor in the motor case drives a crankshaft which is integrally connected to the drive shaft. The crankshaft is connected to a piston rod extending perpendicular to the crankshaft and having a piston at its upper end. When the crankshaft rotates, the piston moves up and down. Compressed gas from the compressed gas flow path is supplied to the compression chamber above the piston and further compressed by the piston. The bypass conduit connects the compressed gas flow path to the motor case to maintain the pressure in the crankcase above atmospheric pressure.

Description

부스터-타입 가스 컴프레서{BOOSTER-TYPE GAS COMPRESSOR}BOOSTER-TYPE GAS COMPRESSOR}

도 1은 본 발명에 따른 부스터-타입 가스 컴프레서의 제1 실시예의 종단면도이다.1 is a longitudinal sectional view of a first embodiment of a booster-type gas compressor according to the present invention.

도 2는 본 발명에 따른 부스터-타입 가스 컴프레서의 제2 실시예의 종단면도이다.2 is a longitudinal sectional view of a second embodiment of a booster-type gas compressor according to the present invention.

도 3은 본 발명에 따른 부스터-타입 가스 컴프레서의 제3 실시예의 종단면도이다.3 is a longitudinal sectional view of a third embodiment of a booster-type gas compressor according to the present invention.

도 4는 공지된 부스터-타입 가스 컴프레서의 종단면도이다.4 is a longitudinal sectional view of a known booster-type gas compressor.

본 발명은 압축 가스가 왕복 피스톤에 의하여 추가로 압축되는 부스터-타입 가스 컴프레서에 관한 것이다.The present invention relates to a booster-type gas compressor in which compressed gas is further compressed by a reciprocating piston.

도 4에 도시된 바와 같이, 흡입 밸브(23)가 실린더(21)의 상부 벽(22)의 일측에 제공되고 배출 밸브(24)가 상부 벽(22)의 다른 측에 제공된다. 상기 흡입 밸브(23) 및 배출 밸브(24) 상부에, 각각 입구(25)를 가지는 흡입 챔버(suction chamber)(26) 및 출구(27)를 가지는 배출 챔버(28)가 있다. 실린더(21) 하부에, 크랭크 케이스(29) 내에 구동 샤프트(driving shaft)(30)와 일체로 형성되는 크랭크 샤프트(31)가 제공된다. 구동 샤프트(30)는 가스가 통과될 수 있도록 크랭크 케이스(29)의 측벽(29a)에 장착되는 모터 케이스(33) 내의 전기 모터(34)에 의하여 구동된다. 피스톤(39)은, 흡입 밸브(23)를 통하여 피스톤(36) 상부의 압축 챔버에 유입되는 N2와 같은 기체를 압축하고 상기 기체를 배출 밸브(24) 및 출구(27)를 통하여 배출하도록 구동 샤프트(30)와 함께 형성되는 크랭크 샤프트(31)에 의하여 피스톤 로드(35)를 통하여 실린더(21)의 상하로 이동된다.As shown in FIG. 4, a suction valve 23 is provided on one side of the upper wall 22 of the cylinder 21 and a discharge valve 24 is provided on the other side of the upper wall 22. Above the intake valve 23 and the discharge valve 24 are a suction chamber 26 having an inlet 25 and a discharge chamber 28 having an outlet 27, respectively. Below the cylinder 21, a crankshaft 31 is provided which is integrally formed with a driving shaft 30 in the crankcase 29. The drive shaft 30 is driven by the electric motor 34 in the motor case 33 mounted to the side wall 29a of the crankcase 29 so that gas can pass therethrough. The piston 39 is driven to compress a gas, such as N 2 , which enters the compression chamber above the piston 36 through the intake valve 23 and discharge the gas through the discharge valve 24 and the outlet 27. The crank shaft 31 formed together with the shaft 30 is moved up and down of the cylinder 21 through the piston rod 35.

이러한 왕복-피스톤 타입 가스 컴프레서에서, 피스톤(36)의 왕복 운동으로, 실린더(21) 내의 피스톤(36) 상부의 압축 챔버의 압축 가스는 피스톤(36) 주위를 통하여 크랭크 케이스(29) 내부로 일부 누출된다. In this reciprocating-piston type gas compressor, in the reciprocating motion of the piston 36, the compressed gas in the compression chamber above the piston 36 in the cylinder 21 is partially introduced into the crankcase 29 through the piston 36. Leaks.

크랭크 케이스(29) 내의 압축 가스는 크랭크 케이스(29)의 공기 구멍(38)으로부터 일부 배출되어 에너지의 손실을 발생한다. 유독 가스의 누출은 공기를 오염시킨다.Compressed gas in the crankcase 29 is partially discharged from the air hole 38 of the crankcase 29 to generate a loss of energy. Leakage of toxic gases pollutes the air.

또한, 이러한 왕복-피스톤 타입 가스 컴프레서가, 재기동(restarting) 또는 무부하(unloading) 작동의 흡입 단계에서, 압축 가스를 흡입하고, 상기 압축 가스를 더 높은 압력으로 압축하는 부스터-타입 가스 컴프레서를 포함하는 경우에, 압축 챔버는 크랭크 케이스(29)의 공기 구멍(38)으로부터 대기압 가스가 피스톤(36)의 둘레를 통하여 피스톤(36) 상부의 압축 챔버로 흐르고 밀도를 낮추도록 흡입 구멍(25)으로부터의 가스와 혼합되는 감압 상태로 된다.Such a reciprocating-piston type gas compressor also includes a booster-type gas compressor that sucks compressed gas and compresses the compressed gas to a higher pressure in the intake stage of a restarting or unloading operation. In the case, the compression chamber is supplied from the air intake hole 25 of the crankcase 29 from the suction hole 25 so that atmospheric gas flows through the circumference of the piston 36 into the compression chamber above the piston 36 and lowers the density. It will be in a reduced pressure state mixed with gas.

전기 모터(34)를 냉각하기 위하여, 환기 구멍(39)이 전기 모터 케이스(33)에 형성되거나 또는 팬(fan)이 강제 냉각을 달성하기 위하여 구동 샤프트(30)에 장착된다. 따라서, 전기 모터(34)는 완전히 밀봉될 수 없어 소음을 누설시키거나 또는 먼지, 및 외부 공기의 고체 성분이 전기 모터(34) 또는 모터 케이스(33)에 남아 있을 수 있다.In order to cool the electric motor 34, a ventilation hole 39 is formed in the electric motor case 33 or a fan is mounted in the drive shaft 30 to achieve forced cooling. Thus, the electric motor 34 may not be completely sealed and may leak noise or solids of dust and external air may remain in the electric motor 34 or the motor case 33.

또한, 이러한 부스터-타입 가스 컴프레서에서는 크랭크 케이스(29)의 내부는 대기압 상태로 있게 된다. 그러므로, 피스톤(36)의 상부와 하부의 압력 차이 때문에, 한번 회전시 토크 편차는 크랭크 케이스(29)에 직접 장착된 전기 모터(34)의 전류를 증가시키도록 크게 되어, 피스톤(36)의 외주면, 피스톤 링, 구동 샤프트(30), 크랭크 샤프트(31)의 베어링(41, 42) 및 슬라이딩부의 밀봉재에 대한 손상을 가속시킨다.In addition, in such a booster-type gas compressor, the inside of the crankcase 29 is at atmospheric pressure. Therefore, due to the pressure difference between the upper and lower portions of the piston 36, the torque deviation in one rotation is increased to increase the current of the electric motor 34 mounted directly to the crankcase 29, so that the outer peripheral surface of the piston 36 Accelerates damage to the seals of the piston rings, drive shaft 30, bearings 41 and 42 of the crankshaft 31 and sliding parts.

본 발명의 목적은 왕복 피스톤을 포함하며, 압력 차이가 피스톤 상부의 압력 챔버와 피스톤 하부의 크랭크 케이스 사이에서 감소되어 각 부품의 마모 및 작동이 매끄럽지 않게 되는 것을 방지할 수 있는 부스터-타입 가스 컴프레서를 제공하는데 있다.It is an object of the present invention to include a reciprocating piston, wherein a booster-type gas compressor is provided in which the pressure differential is reduced between the pressure chamber above the piston and the crankcase below the piston to prevent wear and operation of each component from being smooth. To provide.

본 발명의 특징 및 장점이 첨부 도면에 도시된 실시예에 대하여 다음 상세한 설명으로부터 보다 명백하게 된다.The features and advantages of the present invention will become more apparent from the following detailed description of the embodiments shown in the accompanying drawings.

도 1은 본 발명에 따른 부스터-타입 가스 컴프레서의 제1 실시예를 도시한 다.1 shows a first embodiment of a booster-type gas compressor according to the invention.

상기 부스터-타입 가스 컴프레서의 기본 구조는 도 4의 기본 구조와 크게 다르지 않다. 동일한 참조 부호는 동일한 부재를 지시한다. 기본 구조의 상세한 설명은 생략되며 차이만이 설명된다.The basic structure of the booster-type gas compressor is not significantly different from that of FIG. Like reference numerals designate like elements. Detailed descriptions of the basic structure are omitted and only differences are described.

도 1에서, 외부 공기와 연통되는 공기 구멍(38)이 없고, 압축 가스 유입 구멍(11)이 환기 구멍 대신에 전기 모터 케이스(33)에 형성된다.In Fig. 1, there is no air hole 38 in communication with the outside air, and a compressed gas inlet hole 11 is formed in the electric motor case 33 instead of the ventilation hole.

압축 가스 공급 통로(37)가 바이패스 도관(bypath conduit)(14)을 통하여 압축 가스 유입 구멍(11)에 연결되며, 상기 바이패스 도관(14)은 압축 가스 공급 통로(37)쪽으로 닫히고 반대 방향으로 열리는 체크 밸브(12) 및 압력 조절 밸브 또는 감압 밸브와 같은 압력 레귤레이터(pressure regulator)(13)를 포함한다.The compressed gas supply passage 37 is connected to the compressed gas inlet hole 11 through a bypass conduit 14, which is closed toward the compressed gas supply passage 37 and in the opposite direction. And a pressure regulator 13, such as a pressure regulating valve or a pressure reducing valve.

밸브(도시하지 않음)를 개방함으로써, 압축 가스가 흡입 챔버(26) 내로 공급되고, 크랭크 케이스(29)의 내부를 대기압 이상으로 압축하도록 체크 밸브(12) 및 압력 레귤레이터(13)를 포함하는 바이패스 도관(14), 압축 가스 유입 구멍(11), 모터 케이스(33) 및 연통 구멍(32)을 통하여 크랭크 케이스(29) 내로 일부 유입된다.By opening the valve (not shown), the compressed gas is supplied into the suction chamber 26 and includes a check valve 12 and a pressure regulator 13 to compress the inside of the crankcase 29 to above atmospheric pressure. Partly flows into the crankcase 29 through the pass conduit 14, the compressed gas inlet hole 11, the motor case 33 and the communication hole 32.

압축 가스 공급 통로(37) 내의 압축 가스는 크랭크 케이스(29) 내로 일부 공급되어, 크랭크 케이스(29) 내의 가스 압력은 공지된 장치와 다른 대기압 이상으로 된다.The compressed gas in the compressed gas supply passage 37 is partially supplied into the crankcase 29 so that the gas pressure in the crankcase 29 becomes above atmospheric pressure different from the known apparatus.

따라서, 실린더(21)에서 피스톤(36) 상부의 압축 챔버와 크랭크 케이스(29)의 내부의 압력 차이는 공지된 장치보다 작게 되어, 피스톤(36)의 슬라이딩이 매끄럽지 않게 되는 것을 방지하고, 각 베어링(41, 42) 및 밀봉재(seal)의 수명이 감소 되는 것을 방지하고 불균형력에 의하여 발생되는 헐거움(looseness)을 방지한다.Therefore, in the cylinder 21, the pressure difference between the compression chamber above the piston 36 and the inside of the crankcase 29 becomes smaller than a known device, preventing the sliding of the piston 36 from becoming smooth and preventing each bearing. The life of the 41 and 42 and the seal is prevented from being reduced and the looseness caused by the imbalance is prevented.

압력 레귤레이터(13)에 의하여, 크랭크 케이스(29) 내의 압축 가스의 압력이 조절되어, 상기 피스톤(37) 위쪽의 압축 챔버와의 압력 차이가 가능한 한 신속하게 조절되어 안정된 성능을 얻을 수 있다.By the pressure regulator 13, the pressure of the compressed gas in the crankcase 29 is adjusted, and the pressure difference with the compression chamber above the piston 37 is adjusted as quickly as possible to obtain stable performance.

도 2에 도시된 바와 같이, 압력 레귤레이터(15)는 크랭크 케이스에 직접 연결될 수 있다. 압력 레귤레이터(15)는 압력 조절 밸브 및 체크 밸브를 포함하는 리저버 탱크(reserve tank)일 수 있어 도 1과 유사한 장점을 달성할 수 있다.As shown in FIG. 2, the pressure regulator 15 may be directly connected to the crankcase. The pressure regulator 15 may be a reservoir tank that includes a pressure regulating valve and a check valve to achieve an advantage similar to that of FIG. 1.

도 3에서, 압축 가스 공급 통로(37)는 바이패스 도관(14)을 통하여 모터 케이스(33)의 압축 가스 유입 구멍(11)에 연결되며, 상기 바이패스 도관(14)은 압축 가스 공급 통로(37)쪽으로 닫히고 반대 방향으로 열리는 체크 밸브(12)를 포함한다. 압력 레귤레이터(13)는 상기 바이패스 도관(14)과 흡입 밸브(23) 사이의 압축 가스 공급 통로(37)에 제공되어 도 1과 유사한 장점을 달성한다.In FIG. 3, the compressed gas supply passage 37 is connected to the compressed gas inlet hole 11 of the motor case 33 through the bypass conduit 14, and the bypass conduit 14 is connected to the compressed gas supply passage ( And a check valve 12 which is closed toward 37 and opens in the opposite direction. A pressure regulator 13 is provided in the compressed gas supply passage 37 between the bypass conduit 14 and the intake valve 23 to achieve an advantage similar to that of FIG. 1.

상기의 설명은 단지 본 발명의 실시예에 관한 것이다. 당업자에 의하여 다수의 변경 및 수정이 본 청구항의 범위를 벗어나지 않으면서 이루어질 수 있다.The above description only relates to embodiments of the present invention. Many modifications and variations can be made by those skilled in the art without departing from the scope of the claims.

본 발명에 따른 부스터-타입 가스 컴프레서는 각 부품의 마모 및 작동이 매끄럽지 않게 되는 것을 방지할 수 있다.The booster-type gas compressor according to the present invention can prevent wear and operation of each component from becoming unsmooth.

Claims (4)

부스터-타입 가스 컴프레서에 있어서,In booster-type gas compressors, 크랭크 케이스,Crankcase, 상기 크랭크 케이스 내의 크랭크 샤프트,Crankshaft in the crankcase, 상기 크랭크 샤프트에 일체로 연결되는 구동 샤프트,A drive shaft integrally connected to the crankshaft, 모터 케이스,Motor case, 상기 모터 케이스 내의 상기 구동 샤프트를 구동하도록 상기 구동 샤프트에 연결되는 전기 모터,An electric motor connected to the drive shaft to drive the drive shaft in the motor case, 실린더,cylinder, 상기 실린더 내의 피스톤,A piston in the cylinder, 상단부가 상기 피스톤에 연결되고 하단부가 상기 크랭크 샤프트에 연결되는 피스톤 로드,A piston rod having an upper end connected to the piston and a lower end connected to the crankshaft, 압축 가스를 상기 피스톤 상부의 압축실 내부로 공급하여 상기 압축 가스를 추가로 압축하는 압축 가스 유로, 및A compressed gas flow path for supplying a compressed gas into the compression chamber above the piston to further compress the compressed gas, and 상기 크랭크 케이스 내의 압력을 대기압 이상으로 유지하도록 상기 압축 가스 유로를 상기 크랭크 케이스에 연결시키는 바이패스 도관(bypath conduit)Bypass conduit connecting the compressed gas flow path to the crankcase to maintain pressure in the crankcase above atmospheric pressure. 을 포함하는 것을 특징으로 하는 부스터-타입 가스 컴프레서.Booster-type gas compressor comprising a. 제1항에 있어서,The method of claim 1, 상기 바이패스 도관에 압력 레귤레이터(pressure regulator)를 추가로 포함하는 것을 특징으로 하는 부스터-타입 가스 컴프레서.A booster-type gas compressor further comprising a pressure regulator in the bypass conduit. 제1항에 있어서,The method of claim 1, 상기 크랭크 케이스에 압력 레귤레이터를 추가로 포함하는 것을 특징으로 하는 부스터-타입 가스 컴프레서.A booster-type gas compressor, further comprising a pressure regulator in the crankcase. 제1항에 있어서,The method of claim 1, 상기 바이패스 도관과 상기 실린더 사이의 상기 압축 가스 유로에 압력 레귤레이터를 추가로 포함하는 것을 특징으로 하는 부스터-타입 가스 컴프레서.And a pressure regulator in said compressed gas flow path between said bypass conduit and said cylinder.
KR1020070002096A 2006-01-10 2007-01-08 Booster-type gas compressor Expired - Fee Related KR100815538B1 (en)

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