KR100387467B1 - Vacuum pump for vehicles - Google Patents

Vacuum pump for vehicles Download PDF

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Publication number
KR100387467B1
KR100387467B1 KR10-2000-0044507A KR20000044507A KR100387467B1 KR 100387467 B1 KR100387467 B1 KR 100387467B1 KR 20000044507 A KR20000044507 A KR 20000044507A KR 100387467 B1 KR100387467 B1 KR 100387467B1
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KR
South Korea
Prior art keywords
oil
vacuum pump
pump
slot
vehicle
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KR10-2000-0044507A
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Korean (ko)
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KR20020011169A (en
Inventor
최낙영
Original Assignee
기아자동차주식회사
현대자동차주식회사
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Priority to KR10-2000-0044507A priority Critical patent/KR100387467B1/en
Publication of KR20020011169A publication Critical patent/KR20020011169A/en
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Publication of KR100387467B1 publication Critical patent/KR100387467B1/en

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Classifications

    • 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
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C18/3442—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, 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 group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • 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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/06—Silencing
    • F04C29/068—Silencing the silencing means being arranged inside the pump housing
    • 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
    • F04C2220/00—Application
    • F04C2220/10—Vacuum

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Abstract

본 발명은 차량용 진공 펌프의 소음 저감 구조에 관한 것으로, 진공탱크와 연결되는 흡기구와 엔진의 오일팬과 연결되는 배출구가 설치된 펌프 하우징내에 베인이 설치된 펌프로터를 설치하여 이루어지는 차량용 진공 펌프에 있어서, 상기 펌프 하우징의 배출구 부근에 오일과 공기의 흐름방향을 따라 길게 형성되는 슬롯과; 상기 베인의 작용압을 감소시킬 수 있도록 상기 슬롯의 배출구측 일단부에 오일팬측으로 관통 형성되는 소구경의 드레인을 포함하고, 상기 슬롯에서 드레인이 형성된 부위는 엣지(edge)가 생성되지 않도록 함몰부로 이루어지는 것을 특징으로 하는 차량용 진공 펌프의 소음 저감 구조를 제공한다.The present invention relates to a noise reduction structure of a vehicle vacuum pump, comprising: a pump rotor having vanes installed in a pump housing having an inlet connected to a vacuum tank and a discharge port connected to an oil pan of an engine, the vehicle vacuum pump comprising: A slot formed along a flow direction of oil and air near the outlet of the pump housing; And a small diameter drain penetrating to the oil pan side at one end of the outlet side of the slot so as to reduce the working pressure of the vane, and the drained portion of the slot is formed as a recess so that an edge is not generated. It provides a noise reduction structure of a vehicle vacuum pump, characterized in that made.

본 발명에 의하면, 진공 펌프의 배출구 부근에서 베인의 오일과 공기에의 작용압을 감소시킬 수 있으므로 오일의 토출시에 발생할 수 있는 소음의 발생을 효과적으로 줄일 수 있다.According to the present invention, since the working pressure of the vane to the oil and air in the vicinity of the discharge port of the vacuum pump can be reduced, it is possible to effectively reduce the generation of noise that may occur when the oil is discharged.

Description

차량용 진공 펌프{VACUUM PUMP FOR VEHICLES}Automotive vacuum pumps {VACUUM PUMP FOR VEHICLES}

본 발명은 차량용 진공 펌프에 관한 것으로, 더욱 상세하게는 진공 펌프의 배출구 부근에서 베인으로부터 오일과 공기로 전해지는 작용압에 의해 발생할 수있는 소음을 효과적으로 줄일 수 있는 차량용 진공 펌프의 소음 저감 구조에 관한 것이다.The present invention relates to a vacuum pump for a vehicle, and more particularly, to a noise reduction structure of a vacuum pump for a vehicle that can effectively reduce the noise generated by the operating pressure transmitted from the vanes to oil and air in the vicinity of the discharge port of the vacuum pump. will be.

예컨대, 차량의 전원 공급을 위하여 설치되는 발전기(alternator)에는 1-5톤급 디젤 차량의 브레이크 작동을 보조하기 위하여 발전기와 동축상으로 진공 펌프를 설치하고 있으며, 이 진공 펌프는 하우징내로 공기를 흡입하고 오일을 공급하여 이들을 베인등으로 압축시키면서 이를 배출구를 통하여 배출시킴으로써 진공력을 얻고 이로부터 얻어진 진공력을 차량에 제공하도록 되어 있다. 이 진공 펌프로부터 제공되는 진공력은 차량의 브레이크를 동작시켜 주는 부스터(Booster)로 보내져 차량을 제동시킬 수 있도록 이용된다.For example, an alternator installed to supply power to a vehicle is provided with a vacuum pump coaxially with the generator to assist brake operation of a 1-5 ton diesel vehicle. The vacuum pump sucks air into the housing. By supplying oil and compressing them into vanes or the like and discharging them through the discharge port, a vacuum force is obtained and the vacuum force obtained therefrom is provided to the vehicle. The vacuum force provided by the vacuum pump is sent to a booster that operates the brake of the vehicle and used to brake the vehicle.

이와 같은 종래의 차량용 진공 펌프의 일예를 들면, 도 3에 도시한 바와 같이, 진공탱크(102)와 연결되는 흡기구(104)와 엔진의 오일팬(114)과 연결되는 배출구(106)가 설치된 펌프 하우징(108)내에 베인(110)이 설치된 펌프로터(112)를 설치하여 구성한다. 이러한 진공 펌프의 동작은 엔진의 오일팬(114)으로부터 송출된 엔진 오일이 급유구를 통해 진공 펌프의 펌프 하우징(108)과 펌프로터(112)에 장착된 베인(110) 사이로 유입되어 밀봉 및 냉각, 윤활작용을 하면서 진공탱크와 연결된 흡기구(104)로부터 공기를 흡입하여 진공탱크(102)내에 진공을 형성시켜 브레이크를 동작시키는 부스터로 보내게 된다.As an example of such a conventional vehicle vacuum pump, as shown in FIG. 3, a pump provided with an inlet port 104 connected to the vacuum tank 102 and an outlet 106 connected to the oil pan 114 of the engine is provided. The pump rotor 112 in which the vane 110 is installed in the housing 108 is installed. The operation of the vacuum pump is such that the engine oil discharged from the oil pan 114 of the engine flows through the oil inlet between the pump housing 108 of the vacuum pump and the vane 110 mounted on the pump rotor 112 to seal and cool. While lubricating, the air is sucked from the intake port 104 connected to the vacuum tank to form a vacuum in the vacuum tank 102 to be sent to the booster for operating the brake.

그런데 상기의 종래의 차량용 진공 펌프에서는 로터가 편심되어 형성되어 있으므로 회전시 오일이 흐르는 공간은 넓은 공간(a)과 좁은 공간(b)을 가지게 된다. 이 때 로터의 회전에 의해 넓은 공간(a)에 있던 오일과 공기는 좁은 공간(b)으로밀려들어가게 됨에 따라 베인과 오일, 공기간의 부하에 따라 소음이 발생하게 되는 문제점이 있었다.However, since the rotor is eccentrically formed in the conventional vacuum pump for a vehicle, a space in which oil flows during rotation has a wide space (a) and a narrow space (b). At this time, the oil and air in the large space (a) by the rotation of the rotor is pushed into the narrow space (b), there was a problem that the noise occurs depending on the load between the vane, oil, and air.

따라서 본 발명은 상기의 문제점을 해결하기 위한 것으로, 본 발명의 목적은 진공 펌프 내에서 넓은 공간에서 좁은 공간으로 오일과 공기가 이동시에 베인과 오일, 공기간의 부하로 인하여 발생하는 소음을 저감시키기 위한 차량용 진공 펌프의 소음 저감 구조를 제공하는 데 있다.Therefore, the present invention is to solve the above problems, an object of the present invention is to reduce the noise caused by the load between the vane and oil, air when the oil and air is moved from a large space to a narrow space in the vacuum pump It is to provide a noise reduction structure of a vehicle vacuum pump.

도 1은 본 발명에 의한 차량용 진공 펌프의 개략 단면도,1 is a schematic cross-sectional view of a vacuum pump for a vehicle according to the present invention;

도 2는 도 1의 A부의 상세 사시도,FIG. 2 is a detailed perspective view of part A of FIG. 1;

도 3은 종래 기술에 의한 차량용 진공 펌프의 개략 단면도이다.3 is a schematic cross-sectional view of a vacuum pump for a vehicle according to the prior art.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

12 : 진공탱크 14 : 흡기구12: vacuum tank 14: intake vent

16 : 오일팬 18 : 배출구16 oil pan 18 outlet

20 : 펌프 하우징 22 : 베인20: pump housing 22: vanes

24 : 펌프로터 26 : 회전축24: pump rotor 26: rotating shaft

28 : 슬롯 30 : 드레인28: slot 30: drain

32 : 함몰부32: depression

상기의 목적을 달성하기 위하여 본 발명은The present invention to achieve the above object

진공탱크와 연결되는 흡기구와 엔진의 오일팬과 연결되는 배출구가 설치된 펌프 하우징내에 베인이 설치된 펌프로터를 설치하여 이루어지는 차량용 진공 펌프에 있어서, 상기 펌프 하우징의 배출구 부근에 오일과 공기의 흐름방향을 따라 길게 형성되는 슬롯과; 상기 베인의 작용압을 감소시킬 수 있도록 상기 슬롯의 배출구측 일단부에 오일팬측으로 관통 형성되는 소구경의 드레인을 포함하고, 상기 슬롯에서 드레인이 형성된 부위는 엣지(edge)가 생성되지 않도록 함몰부로 이루어지는 것을 특징으로 하는 차량용 진공 펌프의 소음 저감 구조를 제공한다.In a vacuum pump for a vehicle in which a vane is provided in a pump housing provided with an intake port connected to a vacuum tank and an outlet port connected to an oil pan of an engine, wherein the oil and air flow near the outlet port of the pump housing. An elongated slot; And a small diameter drain penetrating to the oil pan side at one end of the outlet side of the slot so as to reduce the working pressure of the vane, and the drained portion of the slot is formed as a recess so that an edge is not generated. It provides a noise reduction structure of a vehicle vacuum pump, characterized in that made.

이하, 상기의 목적을 구체적으로 실현할 수 있는 본 발명의 실시예를 첨부된 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings an embodiment of the present invention that can specifically realize the above object will be described.

도 1은 본 발명의 차량용 진공 펌프의 소음 저감 구조를 도시하는 개략 단면도이다.BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional drawing which shows the noise reduction structure of the vehicle vacuum pump of this invention.

도 1을 참조하면, 본 발명에 관계하는 차량용 진공 펌프는 차량내의 진공탱크(12)와 연결되는 흡기구(14)와 디젤엔진의 오일팬(16)과 연결되는 배출구(18)가 설치된 펌프 하우징(20)과, 이 펌프 하우징(20) 내에 설치된 베인(22) 및 펌프로터(24)와, 이 펌프로터(24)를 회전시키기 위한 회전축(26)을 포함하여 이루어진다.Referring to FIG. 1, a vehicle vacuum pump according to the present invention includes a pump housing provided with an inlet 14 connected to a vacuum tank 12 in a vehicle and an outlet 18 connected to an oil fan 16 of a diesel engine. 20), the vane 22 and the pump rotor 24 provided in this pump housing 20, and the rotating shaft 26 for rotating this pump rotor 24 are comprised.

상기와 같이 이루어지는 진공 펌프에서 펌프 하우징의 배출구(18)부근에는 도 2에 보다 상세히 도시한 바와 같이, 오일과 공기의 흐름방향을 따라 슬롯(28)이 길게 형성되고, 이 슬롯(28)의 배출구측 일단부에는 오일팬측으로 하향 관통되는 소구경의 드레인(30)이 형성된다. 상기 슬롯(28)은 흐름방향을 따라서 깊이가 점점 깊어지며, 깊어진 일측에 상기 드레인(30)이 형성되고 있다.In the vacuum pump made as described above, as shown in more detail in FIG. 2, the outlet 28 of the pump housing is formed with a slot 28 extending along the flow direction of oil and air, and the outlet of the slot 28. At one end of the side, a small diameter drain 30 penetrating downward to the oil pan side is formed. The slot 28 has a deeper depth along the flow direction, and the drain 30 is formed at one side deepened.

상기 슬롯(28)에서 드레인(30)이 형성된 부위에 엣지(edge)가 있을 경우 오일과 공기가 이에 부딪쳐서 소음이 발생될 가능성이 있으므로 이러한 엣지가 생성되지 않도록 드레인측에는 함몰부(32)가 형성된다.If there is an edge in the portion where the drain 30 is formed in the slot 28, oil and air may collide with it, and noise may be generated. Therefore, a depression 32 is formed at the drain side so that such an edge is not generated. .

상기 함몰부(32)는 오일과 공기의 흐름방향으로 기준으로 전, 후, 좌, 우의 4개 방향으로 홈이 형성되는 클로버 형상으로 이루어져서 소음의 발생을 최소화할 수 있도록 형성된다.The depression 32 is formed in a clover shape in which grooves are formed in four directions of front, rear, and left and right with respect to the flow direction of oil and air so as to minimize the occurrence of noise.

상기와 같이 이루어지는 본 발명의 차량용 진공 펌프의 소음 저감 구조의 소음 저감 작동은 다음과 같다.Noise reduction operation of the noise reduction structure of the vehicle vacuum pump of the present invention made as described above is as follows.

엔진의 오일팬(16)으로부터 송출된 엔진 오일이 급유구를 통해 진공 펌프의 펌프로터(24)에 장착된 베인(22) 사이로 유입되며, 펌프로터(24)가 회전축(26)에의하여 회전하게 됨에 따라 베인(22)은 오일과 공기를 배출구(18)로 이동시키게 된다. 이 때, 배출구 부근에서의 베인(22)의 작용압은 슬롯(28)을 통하여 일정량이 감소되며, 드레인(30)을 통해서도 일정압이 외부로 배출되므로 전체적으로 오일과 공기에 작용하는 베인의 부하가 감소되어 베인이 오일과 공기를 밀어낼 때의 소음의 발생이 방지되게 된다.The engine oil discharged from the oil pan 16 of the engine flows through the oil inlet between the vanes 22 mounted on the pump rotor 24 of the vacuum pump, and causes the pump rotor 24 to rotate by the rotation shaft 26. As the vanes 22 move oil and air to the outlet 18. At this time, the working pressure of the vanes 22 in the vicinity of the discharge port is reduced by a certain amount through the slot 28, the constant pressure is discharged to the outside through the drain 30, so the load of the vanes acting on the oil and air as a whole It is reduced to prevent the generation of noise when the vanes push oil and air.

본 발명에 의하면, 진공 펌프의 배출구 부근에서 베인의 오일과 공기에의 작용압을 감소시킬 수 있으므로 오일의 토출시에 발생할 수 있는 소음의 발생을 효과적으로 줄일 수 있다.According to the present invention, since the working pressure of the vane to the oil and air in the vicinity of the discharge port of the vacuum pump can be reduced, it is possible to effectively reduce the generation of noise that may occur when the oil is discharged.

Claims (2)

진공 탱크와 연결되는 흡기구와 엔진의 오일팬과 연결되는 배출구를 구비하는 펌프 하우징,A pump housing having an inlet connected to the vacuum tank and an outlet connected to the oil pan of the engine, 상기 펌프 하우징 내에 설치된 펌프 로터, 그리고A pump rotor installed in the pump housing, and 상기 펌프 로터의 외주측에 설치된 복수의 베인A plurality of vanes provided on an outer circumferential side of the pump rotor 을 포함하고,Including, 상기 펌프 하우징은The pump housing 상기 배출구 부근에 길게 형성되는 슬롯 및A slot formed long around the outlet and 상기 슬롯에서 상기 펌프 하우징을 관통하여 형성되는 드레인Drain formed through the pump housing in the slot 을 포함하고,Including, 상기 슬롯과 상기 드레인이 접하는 부분에 다수의 만곡된 홈으로 이루어지는 함몰부가 형성되어 있는A recessed portion formed of a plurality of curved grooves is formed in a portion where the slot and the drain contact each other. 차량용 진공 펌프.Automotive vacuum pumps. 삭제delete
KR10-2000-0044507A 2000-08-01 2000-08-01 Vacuum pump for vehicles KR100387467B1 (en)

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KR100494415B1 (en) * 2002-10-22 2005-06-13 현대자동차주식회사 Oil vacuum pump structure

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61171894A (en) * 1985-01-28 1986-08-02 Nippon Denso Co Ltd Vacuum control equipment for vehicle
JPS61171894U (en) * 1985-04-15 1986-10-25
JPH08159069A (en) * 1994-12-08 1996-06-18 Nippondenso Co Ltd Vacuum pump
KR19990001444U (en) * 1997-06-19 1999-01-15 오상수 Noise Reduction Vacuum Pump
KR19990028625U (en) * 1997-12-27 1999-07-15 오상수 Noise Reduction Vacuum Pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61171894A (en) * 1985-01-28 1986-08-02 Nippon Denso Co Ltd Vacuum control equipment for vehicle
JPS61171894U (en) * 1985-04-15 1986-10-25
JPH08159069A (en) * 1994-12-08 1996-06-18 Nippondenso Co Ltd Vacuum pump
KR19990001444U (en) * 1997-06-19 1999-01-15 오상수 Noise Reduction Vacuum Pump
KR19990028625U (en) * 1997-12-27 1999-07-15 오상수 Noise Reduction Vacuum Pump

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