KR0159743B1 - Vane-oil pressure apparatus of a vacuum pump - Google Patents
Vane-oil pressure apparatus of a vacuum pump Download PDFInfo
- Publication number
- KR0159743B1 KR0159743B1 KR1019960011605A KR19960011605A KR0159743B1 KR 0159743 B1 KR0159743 B1 KR 0159743B1 KR 1019960011605 A KR1019960011605 A KR 1019960011605A KR 19960011605 A KR19960011605 A KR 19960011605A KR 0159743 B1 KR0159743 B1 KR 0159743B1
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- South Korea
- Prior art keywords
- vane
- rotor
- housing
- outlet
- oil
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
- F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
본 발명은 베인펌프의 급유구를 통해 유입되는 오일이 각 베인으로 공급되게 하여 저온, 저속에서도 원활하게 돌출시켜 펌프성능을 향상시키도록한 차량용 진공펌프의 베인유압구조에 관한 것으로, 엔진에 자착되어 엔진의 구동력에 의하여 작동되는 교류발전기(10)와; 흡입구(211), 배출구(212) 및 급유구(213)가 각각 형성된 하우징(21)과, 원주방향으로 설정된 간격마다 다수의 베인출몰홈(221)을 형성하여 하우징(21)내에 편심되게 교류발전기(10)의 회전축(11)에 고정설치되어 회전하는 로터(22)와, 로터(22)의 각 베인출몰홈(221)에 설치되어 회전시 축직각방향으로 출몰하면서 하우징(21)의 공간을 흡입 및 압축시키는 판상의 베인(23)으로 구성된 베인펌프(20)와; 배출구(212)에 연결되어 공기압을 저장하는 진공탱크(30);로 구성된 차량용 진공펌프에 있어서, 상기 하우징(21)의 급유구(213)를 통해 로터(22)의 각 베인출몰홈(221)으로 급유되어 저온, 저속에서 오일압력으로 각 베인(23)을 돌출시키도록 베인출몰홈(221)의 내측에 유로(222)를 각각 형성하여 급유구(213)와 연통되게 차량용 진공펌프의 베인유압구조를 구성한다.The present invention relates to a vane hydraulic structure of a vacuum pump for a vehicle in which oil flowing through an oil supply port of a vane pump is supplied to each vane to protrude smoothly even at low and low speeds, thereby improving pump performance. An alternator 10 operated by the driving force of the engine; The inlet 211, the outlet 212, and the oil inlet 213 are formed in the housing 21, and a plurality of vane outlet recesses 221 are formed at intervals set in the circumferential direction so as to be eccentric in the housing 21. The rotor 22 fixedly installed on the rotating shaft 11 of the rotor 10 and the vane recessed grooves 221 of the rotor 22 are installed in the vane recessed recesses 221 of the rotor 22 to be spaced in the axially perpendicular direction during rotation, thereby providing a space in the housing 21. A vane pump 20 composed of plate-shaped vanes 23 for suctioning and compressing; In the vacuum pump 30 for a vehicle comprising a vacuum tank 30 is connected to the outlet 212 to store the air pressure, each vane outlet groove 221 of the rotor 22 through the oil inlet 213 of the housing 21 And the oil passage 222 is formed inside the vane outlet groove 221 so as to protrude each vane 23 with oil pressure at low temperature and low speed, and the vane hydraulic pressure of the vacuum pump for the vehicle to communicate with the oil supply port 213. Construct the structure.
Description
제1도는 본 발명 진공펌프의 구조도.1 is a structural diagram of a vacuum pump of the present invention.
제2도는 본 발명 베인펌프를 발췌한 종단면도.Figure 2 is a longitudinal sectional view of the vane pump of the present invention.
제3도는 제2도의 평단면도.3 is a plan cross-sectional view of FIG.
제4도는 제3도의 A-A선 단면도.4 is a cross-sectional view taken along the line A-A of FIG.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
10 : 교류발전기 11 : 회전축10: alternator 11: rotating shaft
20 : 베인펌프 21 : 하우징20: vane pump 21: housing
211 : 흡입구 212 : 배출구211: inlet 212: outlet
213 : 급유구 22 : 로터213: oil inlet 22: rotor
221 : 베인출몰홈 222 : 유로221: vane home 222: euro
23 : 베인 30 : 진공탱크23: vane 30: vacuum tank
본 발명은 베인펌프의 급유구를 통해 유입되는 오일이 각 베인으로 공급되게 하여 저온, 저속에서도 원활하게 돌출시켜 펌프성능을 향상시키도록 한 차량용 진공펌프의 베인유압구조에 관한 것이다.The present invention relates to a vane hydraulic structure of a vacuum pump for a vehicle, in which oil flowing through the oil supply port of the vane pump is supplied to each vane to protrude smoothly even at low and low speeds, thereby improving pump performance.
종래의 차량용 진공펌프를 제1도 내지 제3도를 참고로 하여 설명하면, 엔진에 장착되어 엔진의 구동력에 의하여 작동되는 교류발전기(10)와; 흡입구(211), 배출구(212) 및 급유구(213)가 각각 형성된 하우징(21)과, 원주방향으로 설정된 간격마다 3-4개의 베인출몰홈(221)을 형성하여 하우징(21)내에 편심되게 교류발전기(10)의 회전축(11)에 고정설치되어 회전하는 로터(22)와, 로터(22)의 각 베인출몰홈(221)에 설치되어 회전시 축직각방향으로 출몰하면서 하우징(21)의 공간을 흡입 및 압축시키는 편상의 베인(23)으로 구성된 베인펌프(20)와; 흡입구(211)에 연결되어 공기압을 저장하는 진공탱크(30);로 구성되어 있었다.Referring to the conventional vehicle vacuum pump with reference to FIGS. 1 to 3, the alternator 10 is mounted to the engine and operated by the driving force of the engine; The inlet 211, the outlet 212, and the oil inlet 213 are formed in the housing 21, and three to four vane outlet recesses 221 are formed at intervals set in the circumferential direction so as to be eccentric in the housing 21. The rotor 22 fixedly installed on the rotating shaft 11 of the alternator 10 and the vane outlet recess 221 of the rotor 22 are installed in the vane recessed grooves 221 of the rotor 22 to be recessed in the axially perpendicular direction during the rotation of the housing 21. A vane pump (20) composed of piece-shaped vanes (23) for sucking and compressing the space; It is connected to the inlet 211, the vacuum tank 30 for storing the air pressure; was configured.
상기 교류발전기(10)는 엔진의 구동력을 크랭크풀리와 벨트로 연결되어 전달받거나, 기어로 연결되어 전달받아 작동하며, 교류발전기(10)는 베인펌프(20)를 작동시켜 진공압을 형성시키도록 되어 있다.The alternator 10 is connected to the crank pulley and the belt is transmitted to the driving force of the engine, or is connected to the gear is transmitted to operate, the alternator 10 to operate the vane pump 20 to form a vacuum pressure It is.
따라서 차량의 제동력이 큰 상용차량의 경우 차량의 제동을 위해 진공압을 사용하는 데, 진공압을 생성하기 위해 교류발전기(10)의 후방부에 도면과 같이 베인펌프(20)를 부착하거나, 엔진에 단독으로 부착하도록 되어 있다. 또한 베인펌프(20)는 차량의 진공탱크(30)에 연결되어 차량의 제동에 필요한 진공압을 유지하는 기능을 하도록 되어 있다.Therefore, in the case of a commercial vehicle having a large braking force of the vehicle, a vacuum pressure is used for braking the vehicle. In order to generate the vacuum pressure, the vane pump 20 is attached to the rear of the alternator 10 as shown in the drawing, or the engine It is attached to a standalone. In addition, the vane pump 20 is connected to the vacuum tank 30 of the vehicle to function to maintain the vacuum pressure required for braking the vehicle.
이러한 진공펌프의 작동원리는, 엔진의 구동력에 의하여 교류발전기(10)의 회전축(11)이 회전하면서 전류를 생성시키는 동시에 베인펌프(20)를 작동시키게 되고, 베인펌프(20)는 회전축(11)에 의해서 로터(22)가 시계방향으로 회전하면 로터(22)의 회전력에 의하여 각 베인(23)에 원심력이 발생하게 되며, 베인(23)의 원심력에 의하여 로터(22)의 베인출몰홈(221)으로 부터 각 베인(23)이 돌출되어 베인(23)의 외측단이 하우징(21)의 내주면에 접하면서 슬라이딩마찰을 일으키게 된다.The operating principle of the vacuum pump is to rotate the rotating shaft 11 of the alternator 10 by the driving force of the engine to generate a current while operating the vane pump 20, the vane pump 20 is the rotating shaft 11 When the rotor 22 rotates in the clockwise direction, centrifugal force is generated in each vane 23 due to the rotational force of the rotor 22, and the vane ejection groove of the rotor 22 is caused by the centrifugal force of the vane 23. Each vane 23 protrudes from the 221 to cause sliding friction while the outer end of the vane 23 comes into contact with the inner circumferential surface of the housing 21.
이때, 로터(22)가 회전축(11)에 의하여 편심되게 설치되어 있어 회전시 베인(23)에 의하여 구획된 하우징(21)의 공간(A,B,C)의 체적이 반복하여 증감되면서 흡입력과 배출력이 발생하게 되므로 하우징(21)의 흡입구(211)로 공기를 흡입한 뒤 배출구(212)를 통하여 배출하게 되고, 배출되는 압축공기는 진공탱크(30)로 공급되어 진공압을 유지하게 된다.At this time, the rotor 22 is installed eccentrically by the rotating shaft 11, the volume of the space (A, B, C) of the housing 21 partitioned by the vanes 23 during rotation rotates repeatedly increases and decreases the suction force and Since the discharge force is generated, the air is sucked into the inlet 211 of the housing 21 and then discharged through the outlet 212, and the compressed air discharged is supplied to the vacuum tank 30 to maintain the vacuum pressure. .
이와 동시에 하우징(21)의 급유구(213)를 통하여 엔진의 오일이 공급되어 공간(A,B,C)의 체적변화량 크기와 동일한 양의 오일이 배출구(212)를 통하여 배출하게 된다.At the same time, the oil of the engine is supplied through the oil supply port 213 of the housing 21 to discharge oil through the outlet 212 in the same amount as the volume change amount of the spaces A, B, and C.
그런데 하우징(21)내로 공급되는 오일은 펌프의 윤활과 밀폐의 기능을 하게 되는데, 저온(0∼-40℃정도) 및 저속에서 엔진의 구동시 오일의 특성상 오일의 점도가 높아 하우징(21)과 베인(23)사이의 높은 점착력이 베인(23)이 돌출하려는 원심력보다 커서 베인(23)이 로터(22)의 베인출몰홈(221)으로 부터 출몰되지 못하여 하우징(21)내의 내주면에 접촉하지 못하게 되는 경우가 발생하게 되고, 이로인해 하우징(21)의 공간(A,B,C)을 구획하지 못하여 유체의 흡입 및 배출하지 못해 펌프로서의 기능을 발휘하지 못하게 되므로 진공탱크(30)의 진공도가 유지되지 않는 문제점이 있으며, 특히 사람의 생명과 직결되는 차량의 제동에 치명적인 문제를 발생시키게 되었다.By the way, the oil supplied into the housing 21 functions as a lubrication and sealing of the pump, the oil viscosity is high due to the characteristics of the oil when the engine is driven at low temperatures (about 0 ~ 40 ℃) and low speed housing 21 and The high adhesive force between the vanes 23 is greater than the centrifugal force that the vanes 23 try to protrude so that the vanes 23 do not come out of the vane recessed grooves 221 of the rotor 22 to prevent contact with the inner circumferential surface of the housing 21. In this case, since the spaces A, B, and C of the housing 21 cannot be partitioned, the suction and discharge of the fluid cannot be performed, so that the function of the pump cannot be exerted, so that the vacuum degree of the vacuum tank 30 is maintained. There is a problem that does not, and especially caused a fatal problem in the braking of the vehicle directly connected to the human life.
본 발명은 이러한 종래의 문제점을 해결하고자 하는 것으로, 베인펌프의 급유구를 통해 유입되는 오일이 각 베인으로 공급되게 하여 저온, 저속에서도 원활하게 돌출시켜 펌프성능을 향상시키고자 차량용 진공펌프의 급유구조를 제공하는데 그 목적이 있다.The present invention is to solve the conventional problems, the oil flowing through the oil supply port of the vane pump is supplied to each vane to smoothly protrude at low temperature, low speed to improve the pump performance of the refueling structure of the vehicle vacuum pump The purpose is to provide.
본 발명은 이러한 목적을 달성하기 위하여, 엔진에 장착되어 엔진의 구동력에 의하여 작동되는 교류발전기와; 흡입구, 배출구 및 급유구가 각각 형성된 하우징과, 원주방향으로 설정된 간격마다 다수의 베인출몰홈을 형성하여 하우징내에 편심되게 교류발전기의 회전축에 고정설치되어 회전하는 로터와, 로터의 각 베인출몰홈에 설치되어 회전시 축직각방향으로 출몰하면서 하우징의 공간을 흡입 및 압축시키는 판상의 베인으로 구성된 베인펌프와; 배출구에 연결되어 공기압을 저장하는 진공탱크;로 구성된 차량용 진공펌프에 있어서, 상기 하우징의 급유구를 통해 로터의 각 베인출몰홈으로 급유되어 저온,저속에서 오일압력으로 각 베인을 돌출시키도록 베인출몰홈의 내측에 유로를 각각 형성하여 급유구와 연통되게 차량용 진공펌프의 베인유압구조를 구성한 것이다.In order to achieve the above object, the present invention includes an alternator mounted on an engine and operated by a driving force of the engine; A housing formed with an inlet, an outlet, and an oil inlet, and a plurality of vane outlet grooves formed at intervals set in the circumferential direction, the rotor being fixedly fixed to the rotating shaft of the alternator in the housing, and rotating in the vane outlet grooves of the rotor. A vane pump having a plate-shaped vane installed and spouted in the axially perpendicular direction during rotation to suck and compress the space of the housing; In the vacuum pump for a vehicle comprising: a vacuum tank for storing the air pressure connected to the outlet, the oil supply port of the housing through the vane outlet groove of the rotor is supplied to the vane outlet to protrude each vane with oil pressure at low temperature, low speed A flow path is formed inside the groove to configure the vane hydraulic structure of the vehicle vacuum pump so as to communicate with the oil supply port.
상기 하우징의 급유구는 회전축의 외경내에 위치하도록 한 것이 본 발명의 부수적인 특징이다.An additional feature of the present invention is that the oil inlet of the housing is positioned within the outer diameter of the rotation shaft.
이하, 본 발명을 첨부도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도면 제1도 내지 제4도는 본 발명의 실시예로서, 엔진에 장착되어 엔진의 구동력에 의하여 작동되는 교류발전기(10)와; 흡입구(211), 배출구(212) 및 급유구(213)가 각각 형성된 하우징(21)과, 원주방향으로 설정된 간격마다 다수의 베인출몰홈(221)을 형성하여 하우징(21)내에 편심되게 교류발전기(10)의 회전축(11)에 고정설치되어 회전하는 로터(22)와, 로터(22)의 각 베인출몰홈(221)에 설치되어 회전시 축직각방향으로 출몰하면서 하우징(21)의 공간을 흡입 및 압축시키는 판상의 베인(23)으로 구성된 베인펌프(20)와; 배출구(212)에 연결되어 공기압을 저장하는 진공탱크(30);로 구성된 차량용 진공펌프에 있어서, 상기 하우징(21)의 급유구(213)를 통해 로터(22)의 각 베인출몰홈(221)으로 급유되어 저온,저속에서 오일압력으로 각 베인(23)을 돌출시키도록 베인출몰홈(221)의 내측에 유로(222)를 각각 형성하여 급유구(213)와 연통되게 차량용 진공펌프의 베인유압구조를 구성한다.1 to 4 are embodiments of the present invention, an alternator (10) mounted to an engine and operated by a driving force of the engine; The inlet 211, the outlet 212, and the oil inlet 213 are formed in the housing 21, and a plurality of vane outlet recesses 221 are formed at intervals set in the circumferential direction so as to be eccentric in the housing 21. The rotor 22 fixedly installed on the rotating shaft 11 of the rotor 10 and the vane recessed grooves 221 of the rotor 22 are installed in the vane recessed recesses 221 of the rotor 22 to be spaced in the axially perpendicular direction during rotation, thereby providing a space in the housing 21. A vane pump 20 composed of plate-shaped vanes 23 for suctioning and compressing; In the vacuum pump 30 for a vehicle comprising a vacuum tank 30 is connected to the outlet 212 to store the air pressure, each vane outlet groove 221 of the rotor 22 through the oil inlet 213 of the housing 21 And the oil passage 222 is formed inside the vane outlet groove 221 so as to protrude each vane 23 with oil pressure at low temperature and low speed, and the vane hydraulic pressure of the vacuum pump for the vehicle is in communication with the oil supply port 213. Construct the structure.
상기 하우징(21)의 급유구(213)는 회전축(11)의 외경내에 위치하도록 한다.The oil supply port 213 of the housing 21 is located in the outer diameter of the rotating shaft 11.
이와같이 구성된 본 발명은, 엔진이 저온,저속운행초기로 작동할 때 오일이 베인펌프(20)의 급유구(213)를 통하여 엔진으로 부터 윤활 및 밀폐를 위하여 오일이 공급되는데, 이때 로터(22)와 베인(23)의 점착력이 매우 높아지게 되어 원심력을 초과하게 되는 경우 베인(23)이 로터(22)의 베인출몰홈(221)으로부터 돌설하지 않게 된다.In the present invention configured as described above, the oil is supplied for lubrication and sealing from the engine through the oil supply port 213 of the vane pump 20 when the engine is operated at low temperature and low speed, and the rotor 22 And when the adhesive force of the vanes 23 becomes very high and the centrifugal force is exceeded, the vanes 23 do not protrude from the vane ejection groove 221 of the rotor 22.
따라서 저온,저속 운행초기에서 베인펌프(20)의 점성증대로 인한 베인(23)의 미돌출을 극복하기 위해서 급유구(213)를 통하여 유입되는 오일을 로터(22)의 유로(222)를 통하여 베인출몰홈(221)으로 공급하게 되면 그 오일압력과 로터(22)의 원심력에 의하여 각 베인(23)이 베인출몰홈(221)으로 부터 돌출하게 된다.Therefore, in order to overcome the non-protrusion of the vanes 23 due to the increase in the viscosity of the vane pump 20 at the beginning of low temperature and low speed operation, the oil flowing through the oil inlet 213 is flowed through the flow path 222 of the rotor 22. When the vane outlet groove 221 is supplied, the vanes 23 protrude from the vane outlet groove 221 by the oil pressure and the centrifugal force of the rotor 22.
즉, 하우징(21)의 급유구(213)는 회전축(11)의 외경범위내에 위치되어 회전축(11)의 상부로 공급하게 되며, 회전축(11)의 상부로 공급되는 오일은 로터(22)의 유로(222)를 통하여 각 베인출몰홈(221)으로 공급되므로 베인출몰홈(221)내에는 오일방력이 발생하여 베인(23)을 밀어내게 되고, 이와동시에 로터(22)의 회전력에 의하여 베인(23)에 원심력이 발생하게 되므로 각 베인(23)은 로터(22)의 바깥방향으로 돌출하게 되는 것이다.That is, the oil inlet 213 of the housing 21 is located in the outer diameter range of the rotary shaft 11 to supply to the upper portion of the rotary shaft 11, the oil supplied to the upper portion of the rotary shaft 11 is the rotor 22 Since the vane outlet groove 221 is supplied to each vane outlet groove 221 through the oil passage 222, oil discharge occurs in the vane outlet groove 221 to push the vanes 23, and at the same time, the vanes are driven by the rotational force of the rotor 22. Since the centrifugal force is generated in the 23), each vane 23 is to protrude in the outer direction of the rotor (22).
따라서 펌프의 윤활과 밀폐를 위하여 공급되는 엔진의 오일압력을 이용하여 저속,저온운행시 베인펌프(20)를 확실하게 작동시켜 주므로서 펌프의 성능을 향상시키는 동시에 제동의 신뢰도를 높일 수가 있는 것이다.Therefore, by using the oil pressure of the engine supplied for lubrication and sealing of the pump to operate the vane pump 20 at a low speed and low temperature operation reliably, it is possible to improve the performance of the pump and increase the reliability of braking.
이와 같이 본 발명은 베인펌프의 로터의 구조를 개량하여 저온,저속운행시에서도 베인의 돌출력을 증대시켜 펌프의 성능을 향상시킬 수 있는 효과가 있다.As described above, the present invention has an effect of improving the performance of the pump by improving the structure of the rotor of the vane pump to increase the protrusion force of the vanes even at low temperature and low speed operation.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960011605A KR0159743B1 (en) | 1996-04-17 | 1996-04-17 | Vane-oil pressure apparatus of a vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019960011605A KR0159743B1 (en) | 1996-04-17 | 1996-04-17 | Vane-oil pressure apparatus of a vacuum pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR970070565A KR970070565A (en) | 1997-11-07 |
| KR0159743B1 true KR0159743B1 (en) | 1999-01-15 |
Family
ID=19455931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019960011605A KR0159743B1 (en) | 1996-04-17 | 1996-04-17 | Vane-oil pressure apparatus of a vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR0159743B1 (en) |
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1996
- 1996-04-17 KR KR1019960011605A patent/KR0159743B1/en not_active IP Right Cessation
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| Publication number | Publication date |
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| KR970070565A (en) | 1997-11-07 |
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