KR100254439B1 - Spool valve for oil pressure control - Google Patents

Spool valve for oil pressure control Download PDF

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Publication number
KR100254439B1
KR100254439B1 KR1019960058036A KR19960058036A KR100254439B1 KR 100254439 B1 KR100254439 B1 KR 100254439B1 KR 1019960058036 A KR1019960058036 A KR 1019960058036A KR 19960058036 A KR19960058036 A KR 19960058036A KR 100254439 B1 KR100254439 B1 KR 100254439B1
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KR
South Korea
Prior art keywords
hydraulic pressure
groove
valve
spool
land
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Application number
KR1019960058036A
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Korean (ko)
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KR19980039079A (en
Inventor
김기우
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정몽규
현대자동차주식회사
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Priority to KR1019960058036A priority Critical patent/KR100254439B1/en
Publication of KR19980039079A publication Critical patent/KR19980039079A/en
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Publication of KR100254439B1 publication Critical patent/KR100254439B1/en

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    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/34—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Multiple-Way Valves (AREA)

Abstract

PURPOSE: A hydraulic pressure control spool valve is provided to prevent pressure reduction with a forming narrow wake in a rear of a groove thereby decreasing a drag force of fluid passing through the groove. CONSTITUTION: A valve body(1) is equipped with a primary port(5) where controlled hydraulic pressure is supplied, a secondary port(7) with hydraulic pressure provided, and third, fifth ports(9,11) supplying hydraulic pressure selectively. The valve body has a chamber(13) accommodating a valve spool(3) supplying and intercepting hydraulic pressure to other port. For the valve spool to exert a mutual acting force between an elastic member(15) and hydraulic pressure, a first land(17) and a second land(19) are furnished and a groove(21) is defined by the first and second lands(17,19). In the groove of the valve spool, an embossing portion(23) is defined as a drag force diminishing implement for reducing hydraulic pressure by narrowly forming a flux wake at a rear of the groove(21) with decreasing the drag force of fluid passing through the groove.

Description

유압제어용 스풀밸브Hydraulic Spool Valve

본 발명은 유압제어용 스풀밸브에 관한 것으로서, 보다 상세하게는 밸브스풀의 랜드와 랜드 사이를 형성하는 그루브를 통과하는 유량의 드레그 포스를 감소시켜 압력 감소를 저하시키는 유압제어용 스풀밸브에 관한 것이다.The present invention relates to a hydraulic control spool valve, and more particularly, to a hydraulic control spool valve for reducing the pressure drop by reducing the drag force of the flow rate passing through the groove forming the land between the land and the valve spool.

일반적으로 유압회로를 형성하는 밸브바디는 복수의 랜드와 각 랜드 사이가 형성하는 그루브를 갖는 밸브스풀과 이 밸브스풀이 작동하도록 복수의 포트들을 형성하는 챔버들로 형성되어 있다.In general, the valve body forming the hydraulic circuit is formed of a valve spool having a plurality of lands and grooves formed between each land and chambers forming a plurality of ports for the valve spool to operate.

즉, 상기 밸브스풀은 일측으로 공급되는 유압에 의하여 밸브스풀의 축방향으로 이동되면서 각각의 포트 연결을 변환시켜 일측 포트로 공급되는 유압을 다른 포트로 공급 및 차단시키도록 형성되어 있다.That is, the valve spool is formed to change the connection of each port by moving in the axial direction of the valve spool by the hydraulic pressure supplied to one side to supply and block the hydraulic pressure supplied to one port to the other port.

상기와 같이 일측 포트에서 다른 일측 포트로 공급되는 유량은 랜드와 랜드 사이가 형성하는 그루브를 통과하게 된다.As described above, the flow rate supplied from one port to the other port passes through a groove formed between the land and the land.

그러나 상기와 같은 유압제어용 스풀밸브는 그루브 표면을 매끈한 형상으로 형성하고 있기 때문에, 제3도에 도시된 바와 같이 그루브를 통과하는 유량에 강한 드레그 포스를 작용시켜 그루브의 후방에서 폭이 넓은 웨이크를 형성하므로 압력 감소를 증대시키는 단점이 있다.However, since the hydraulic control spool valve is formed in the groove surface smoothly, as shown in FIG. 3, a strong drag force is applied to the flow rate passing through the groove to form a wide wake at the rear of the groove. Therefore, there is a disadvantage of increasing the pressure reduction.

따라서 본 발명은 상기와 같은 단점을 해소하기 위하여 안출된 것으로서, 본 발명의 목적은 그루브를 통과하는 유량의 드레그 포스를 감소시켜 그루브의 후방에서 좁은 웨이크 형성으로 압력 감소를 저하시키는 유압제어용 스풀밸브를 제공하는데 있다.Therefore, the present invention has been made in order to solve the above disadvantages, an object of the present invention is to reduce the drag force of the flow rate through the groove to reduce the pressure reduction by forming a narrow wake in the rear of the groove, the hydraulic control spool valve To provide.

이를 실현하기 위하여 본 발명에 따른 유압제어용 스풀밸브는 제어 유압의 공급으로 일측으로 공급되는 유압을 다른 일측으로 공급하도록 복수의 포트와 연결되는 챔버를 형성한 밸브 바디, 이 밸브 바디의 챔버에 내장되어 제어 유압이 작용하는 랜드와 일측으로 공급되는 유압을 다른 일측으로 공급하도록 복수의 랜드를 형성하는 밸브스풀을 포함하며, 상기 밸브스풀의 랜드와 랜드 사이가 형성하는 그루브에 이를 통과하는 유량의 드레그 포스를 감소시키도록 그 표면에 형성된 드레그 포스 감소수단을 포함한다.In order to realize this, the hydraulic control spool valve according to the present invention includes a valve body having a chamber connected to a plurality of ports to supply the hydraulic pressure supplied to one side to the other side by supply of the control hydraulic pressure, and is built in the chamber of the valve body. And a valve spool for forming a plurality of lands for supplying the land to which the control hydraulic pressure acts and the hydraulic pressure supplied to one side to the other side, and the drag force of the flow rate passing through the groove formed between the land and the land of the valve spool. And drag force reducing means formed on the surface thereof to reduce the pressure.

상술한 바와 같이 구성된 유압제어용 스풀밸브는 그루브에 형성된 드레그 포스 감소수단이 이를 통과하는 유량의 드레그 포스를 감소시켜 그루브의 후방에서 좁은 유량 웨이크를 형성케 한다.The hydraulic control spool valve configured as described above allows the drag force reduction means formed in the groove to reduce the drag force of the flow rate passing therethrough to form a narrow flow rate wake at the rear of the groove.

이하 본 발명의 바람직한 구성 및 작용을 첨부한 도면에 의거하여 보다 상세히 설명한다.BEST MODE Hereinafter, preferred configurations and operations of the present invention will be described in detail with reference to the accompanying drawings.

제1도는 본 발명에 관련하는 유압제어용 스플밸브의 단면도.1 is a cross-sectional view of a hydraulic control spool valve according to the present invention.

제2도는 제1도의 A-A선에 따른 단면상을 흐르는 유량의 웨이크를 도시한 상태도.FIG. 2 is a state diagram showing a wake of a flow rate flowing in the cross section along the line A-A in FIG.

제3도는 제1도의 A-A선에 따른 단면상을 흐르는 유량의 웨이크를 도시한 종래의 상태도이다.FIG. 3 is a conventional state diagram showing the wake of the flow rate flowing in the cross section along the line A-A in FIG.

제1도는 본 발명에 관련하는 유압제어용 스풀밸브의 단면도로서, 밸브바디(1)의 일측으로 공급되는 제어 유압에 의하여 밸브스풀(3)이 제어되어 일측으로 공급되는 유압을 다른 일측으로 공급 및 차단시킬 수 있는 구조를 이루어져 있다.1 is a cross-sectional view of the hydraulic control spool valve according to the present invention, the valve spool 3 is controlled by the control oil pressure supplied to one side of the valve body 1 to supply and shut off the oil pressure supplied to one side to the other side. It has a structure that can be done.

즉, 밸브바디(1)는 제어 유압이 공급되는 제1포트(5)와 유압을 공급받는 제2포트(7), 이 제2포트(7)로 공급받은 유압을 선택적으로 공급하는 제3,5포트(9,11)를 구비하고 있다.That is, the valve body 1 may include a first port 5 to which control hydraulic pressure is supplied, a second port 7 to receive hydraulic pressure, and a third to selectively supply hydraulic pressure supplied to the second port 7. Five ports 9 and 11 are provided.

한편 상기 밸브바디(1)는 상기와 같이 제1,2,3,4,5포트(5,7,9,11)를 형성한 것에만 한정되는 것이 아니라 복수개의 포트를 형성하여 상기와 같은 작용을 하는 것 모두를 포함한다.Meanwhile, the valve body 1 is not limited to the first, second, third, fourth, fifth, fifth, fifth, fifth, fifth, fifth, fifth, fifth, fifth, fifth, fifth, fifth, and fifth of the ports. Includes everything you do.

그리고 밸브바디(1)는 상기와 같은 제1,2,3,4,5포트(5,7,9,11) 중 한 포트로 공급되는 유압을 다른 포트에 선택적으로 공급 및 차단시킬 수 있게 하는 밸브스풀(3)을 내장하는 챔버(13)를 형성하고 있다.And the valve body (1) to selectively supply and shut off the hydraulic pressure supplied to one of the first, second, three, four, five port (5, 7, 9, 11) as described above to the other port The chamber 13 in which the valve spool 3 is incorporated is formed.

이 챔버(13)에서 제1포트(5)로 공급되는 유압과 이의 대향측에 제공되는 탄성부재(15)의 상호 작용력에 의하여 작동하는 밸브스풀(3)이 상기와 같은 작용을 할 수 있도록 제1,2랜드(17,19)와 이들 랜드(17,19)에 의하여 형성되는 그루브(21)를 구비하고 있다.The valve spool 3 operated by the interaction force between the hydraulic pressure supplied from the chamber 13 to the first port 5 and the elastic member 15 provided on the opposite side thereof can perform the above operation. 1 and 2 lands 17 and 19 and grooves 21 formed by these lands 17 and 19 are provided.

즉, 제1랜드(17)는 제1포트(5)로 공급되는 제어 유압의 작용력을 받고, 제2랜드(19)는 탄성부재(15)의 탄성 작용력을 받을 수 있도록 본 구성에서는 동일한 유압 작용면으로 형성되어 있다.That is, in this configuration, the first land 17 receives the action of the control hydraulic pressure supplied to the first port 5, and the second land 19 receives the action of the elastic action of the elastic member 15. It is formed of cotton.

상기 밸브스풀(3) 역시 상기 형상에 한정되는 것이 아니라 상기와 같은 밸브 바디(1)의 구조가 바뀜에 따라 같이 바뀔 수 있는 모든 것을 포함한다.The valve spool 3 is also not limited to the above shape but includes all that can be changed as the structure of the valve body 1 as described above changes.

상술한 바와 같이 구성된 밸브스풀(3)의 그루브(21)에는 이를 통과하는 유량의 드레그 포스를 감소시켜 그루브(21) 후방의 유량 웨이크를 제2도에 도시된 바와 같이, 좁게 형성하여 유압의 압력 감소를 감소시키기 위한 드레그 포스 감소수단으로 요철부(23)가 형성되어 있다.In the groove 21 of the valve spool 3 configured as described above, the drag force of the flow rate passing therethrough is reduced to narrow the flow rate wake behind the groove 21, as shown in FIG. The uneven portion 23 is formed as a drag force reduction means for reducing the decrease.

그리고 상기 요철부(23)는 드레그 포스와 흐름 저항을 고려하여 그 형상을 그루브(21) 표면에 밸브스풀(3)의 축방향으로 단축을 형성하고 원주 방향으로 장축을 형성하는 타원 형상으로 형성됨이 바람직하다.And the concave-convex portion 23 is formed in the shape of an ellipse to form a short axis in the axial direction of the valve spool (3) on the surface of the groove 21 in consideration of the drag force and flow resistance to form a long axis in the circumferential direction desirable.

상술한 바와 같이 구성되는 유압제어용 스풀밸브를 구비한 유압회로는 제1포트(5)로 공급 및 비공급되는 유압에 의하여 제2포트(7)로 공급되는 유압을 제3,4포트(9,11)에 선택적으로 공급된다.The hydraulic circuit having the hydraulic control spool valve configured as described above is configured to supply the hydraulic pressure supplied to the second port 7 by the hydraulic pressure supplied and not supplied to the first port 5 to the third and fourth ports 9,. Is optionally supplied.

이 때 제2포트(7)에서 제3,4포트(9,11)로 공급되는 유압은 제2도에 도시된 바와 같이 그루브(21)에 형성된 요철부(23)를 통과하면서 드레그 포스가 감소되어 좁은 폭의 유량 웨이크를 형성하게 된다.At this time, the hydraulic pressure supplied from the second port 7 to the third and fourth ports 9 and 11 passes through the uneven portion 23 formed in the groove 21 as shown in FIG. This results in a narrow flow rate wake.

상술한 바와 같이 본 발명에 따른 유압제어용 스풀밸브는 그루브에 형성된 드레그 포스 감소수단이 이를 통과하는 유량의 드레그 포스를 감소시켜 그루브의 후방에서 좁은 유량 웨이크를 형성케 하므로 압력 감소를 저하시킬 수 있다.As described above, the hydraulic control spool valve according to the present invention can reduce the pressure reduction because the drag force reducing means formed in the groove reduces the drag force of the flow rate passing therethrough, thereby forming a narrow flow rate wake at the rear of the groove.

Claims (1)

제어 유압의 공급으로 일측으로 공급되는 유압을 다른 일측으로 공급하도록 복수의 포트와 연결되는 챔버를 형성한 밸브바디와, 이 밸브바디의 챔버에 내장되어 제어 유압이 작용하는 랜드와 일측으로 공급되는 유압을 다른 일측으로 공급하도록 복수의 랜드를 형성하는 밸브 스풀을 포함하는 유압제어용 스풀 밸브에 있어서, 상기 밸브 스풀의 랜드와 랜드 사이가 형성하는 그루브를 통과하는 유량의 드레그 포스를 감소시키도록 상기 그루브의 표면에 타원형상의 요철부를 구비하는 것을 특징으로 하는 유압제어용 스풀 밸브.A valve body having a chamber connected to a plurality of ports to supply the hydraulic pressure supplied to one side by the supply of the control hydraulic pressure, and a land built into the chamber of the valve body and the hydraulic pressure supplied to one side A hydraulic control spool valve including a valve spool to form a plurality of lands to supply the other side to a side, the pressure of the flow rate passing through the groove formed between the land and the land of the valve spool to reduce the drag force of the groove Hydraulic control spool valve characterized in that the surface is provided with an elliptical uneven portion.
KR1019960058036A 1996-11-27 1996-11-27 Spool valve for oil pressure control KR100254439B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960058036A KR100254439B1 (en) 1996-11-27 1996-11-27 Spool valve for oil pressure control

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Application Number Priority Date Filing Date Title
KR1019960058036A KR100254439B1 (en) 1996-11-27 1996-11-27 Spool valve for oil pressure control

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KR19980039079A KR19980039079A (en) 1998-08-17
KR100254439B1 true KR100254439B1 (en) 2000-10-02

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KR20210038155A (en) 2019-09-30 2021-04-07 현대위아 주식회사 Spool valve

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