KR20040045214A - check valve prevented from freezing - Google Patents

check valve prevented from freezing Download PDF

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Publication number
KR20040045214A
KR20040045214A KR1020020073272A KR20020073272A KR20040045214A KR 20040045214 A KR20040045214 A KR 20040045214A KR 1020020073272 A KR1020020073272 A KR 1020020073272A KR 20020073272 A KR20020073272 A KR 20020073272A KR 20040045214 A KR20040045214 A KR 20040045214A
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KR
South Korea
Prior art keywords
check valve
bimetal
icing
temperature
freezing
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KR1020020073272A
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Korean (ko)
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KR100482139B1 (en
Inventor
최재일
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현대자동차주식회사
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Priority to KR10-2002-0073272A priority Critical patent/KR100482139B1/en
Publication of KR20040045214A publication Critical patent/KR20040045214A/en
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Publication of KR100482139B1 publication Critical patent/KR100482139B1/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
    • F16K49/00—Means in or on valves for heating or cooling
    • F16K49/002—Electric heating means
    • 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
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Check Valves (AREA)

Abstract

PURPOSE: A check valve to prevent freezing is provided to secure a servo operation of a brake booster in a cold season by preventing freezing of the check valve by heating the check valve in freezing temperature according to temperature of an engine room. CONSTITUTION: A check valve to prevent freezing includes an electric heating body and a bimetal switch. The electric heating body covers around a diaphragm and a spring. The bimetal switch coverts electric condition for the electric heating body according to surrounding temperature. The bimetal switch comprises a first electrode belt(9), a second electrode belt(11) and a bimetal plate(13). The first electrode belt is connected to a power source such as a battery. The second electrode belt is connected to a hot wire coil(7) on one end. The bimetal plate installs a fixed end to the first electrode belt. A free end of the bimetal plate is bent according to change of temperature to contact the second electrode belt.

Description

결빙 방지 체크밸브{check valve prevented from freezing}Check valve prevented from freezing

본 발명은 체크밸브가 결빙되어 작동이 되지 못하는 상황을 방지하도록 하는 기술에 관한 것으로서, 보다 상세하게는 엔진의 부압을 브레이크부스터에 전달하여 배력작용을 하는 데에 사용되는 부압파이프상에 설치되는 체크밸브의 결빙을 방지하도록 하는 기술에 관한 것이다.The present invention relates to a technology for preventing a check valve from freezing and preventing operation, and more particularly, a check installed on a negative pressure pipe used to transfer a negative pressure of an engine to a brake booster to perform a boosting operation. A technique for preventing icing of a valve is provided.

일반적으로 브레이크장치는 운전자의 브레이크페달 조작력을 배가시켜 마스터실린더에 제공하기 위해 엔진의 서지탱크에서 제공되는 부압을 사용하여 배력작용을 하는 브레이크부스터를 채용하고 있다.In general, the brake device employs a brake booster that uses the negative pressure provided from the surge tank of the engine to double the driver's brake pedal operation force and provide it to the master cylinder.

따라서, 상기 브레이크부스터에는 엔진의 서지탱크와 연결되는 부압호스에 의해 엔진의 부압이 제공되도록 되어 있으며, 상기 부압호스상에는 브레이크부스터상에 형성된 부압을 안정적으로 유지하도록 하는 체크밸브가 설치된다.Accordingly, the brake booster is provided with a negative pressure of the engine by a negative pressure hose connected to the surge tank of the engine, and a check valve is installed on the negative pressure hose to stably maintain the negative pressure formed on the brake booster.

도 1은 종래 기술에 의해 부압호스(100)에 설치된 체크밸브(102)의 상태가 도시되어 있다. 그런데, 상기한 바와 같은 체크밸브(102)는 혹한기나 극한지의 경우에 결빙에 의해 작동이 이루어지지 않아 차량이 충분한 제동력을 발휘하지 못하게 되는 경우가 있다.1 shows a state of a check valve 102 installed in a negative pressure hose 100 according to the prior art. However, the check valve 102 as described above may not operate due to freezing in the case of cold weather or extreme cold, so that the vehicle may not be able to exert sufficient braking force.

이는, 외기온이 상당히 낮은 경우에 부압호스의 내부와 외부의 온도차에 의해 부압호스(100) 내에 결로가 생기게 되고, 이러한 결로 현상으로 생긴 물방울이 부압호스(100) 및 체크밸브(102)의 장착 및 배치상태에 따라 체크밸브(102)의 전후로 흘러내려 고인 상태에서 결빙하게 됨으로써, 체크밸브 내의 다이어프렘(104)을 고착시키거나 체크밸브(102)의 공기통로를 막아 브레이크부스터에 엔진으로부터의 부압을 원활히 제공하지 못하여 배력작용이 제대로 이루어지지 못하기 때문이다.This causes condensation in the negative pressure hose 100 due to the temperature difference between the inside and the outside of the negative pressure hose when the outside air temperature is considerably low, and the water droplets caused by the condensation phenomenon are attached to the negative pressure hose 100 and the check valve 102. Depending on the arrangement, it flows down the front and rear of the check valve 102 and freezes in a standing state, thereby fixing the diaphragm 104 in the check valve or blocking the air passage of the check valve 102 so that the negative pressure from the engine is applied to the brake booster. This is because power is not properly performed because it is not provided smoothly.

이에 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 엔진룸 내의 온도상태에 따라서 체크밸브의 결빙이 예상되는 온도가 되면 자동적으로 체크밸브를 가열하여 체크밸브의 결빙을 방지하도록 함으로써, 혹한기나 극한지에서도 브레이크부스터의 배력작용이 항상 원활한 상태로 확보될 수 있도록 하여 제동장치의 안정성을 향상시킨 결빙 방지 체크밸브를 제공함에 그 목적이 있다.Accordingly, the present invention has been made in order to solve the above problems, by automatically heating the check valve to prevent the freezing of the check valve when the temperature of the check valve to the expected temperature according to the temperature state in the engine room, It is an object of the present invention to provide an anti-icing check valve that improves the stability of the braking system by ensuring that the booster action of the brake booster is always smooth even in cold weather or extreme cold.

도 1은 종래 기술에 의한 체크밸브의 결빙 메커니즘을 설명한 도면,1 is a view illustrating a freezing mechanism of a check valve according to the prior art;

도 2는 본 발명에 따른 결빙 방지 체크밸브의 구조를 도시한 도면,2 is a view showing the structure of an anti-icing check valve according to the present invention;

도 3은 도 2의 히터부 구조를 도시한 도면,3 is a view showing the heater unit structure of FIG.

도 4는 도 2의 결빙 방지 체크밸브의 분해 사시도이다.4 is an exploded perspective view of the anti-icing check valve of FIG. 2.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

1; 다이어프렘3; 스프링One; Diaphragm 3; spring

4,5; 피트7; 열선코일4,5; Feet 7; Hot coil

9; 제1전극띠11; 제2전극띠9; First electrode strip 11; Second electrode strip

13; 바이메탈플레이트15; 내부하우징13; Bimetal plate 15; Internal housing

17; 외부하우징17; External housing

상기한 바와 같은 목적을 달성하기 위한 본 발명 결빙 방지 체크밸브는 다이어프렘과 스프링의 주위를 감싸도록 설치된 전열체와;The anti-icing check valve of the present invention for achieving the above object is a heating element installed to surround the diaphragm and the spring;

주위 온도에 따라 상기 전열체에 전기를 가하는 상태가 전환되도록 설치된 바이메탈스위치를 포함하여 구성된 것을 특징으로 한다.It characterized in that it comprises a bimetal switch is installed to switch the state of applying electricity to the heating element in accordance with the ambient temperature.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings.

도 2 내지 도 4는 본 발명에 따른 결빙 방지 체크밸브의 구조를 도시한 도면으로서, 주위온도에 따라서 작동되는 바이메탈스위치에 의해 체크밸브를 자동적으로 가열하도록 된 시스템으로서, 체크밸브의 양쪽으로 부압파이프를 끼워서 연결할 수 있는 피트(4,5)를 구비한 형식이다.2 to 4 is a view showing the structure of the anti-icing check valve according to the present invention, a system for automatically heating the check valve by a bimetal switch operated according to the ambient temperature, negative pressure pipe on both sides of the check valve It is a type with pit (4, 5) which can be connected by inserting.

즉, 체크밸브를 이루는 다이어프렘(1)과 스프링(3)의 주위를 감싸도록 설치된 전열체와, 주위 온도에 따라 상기 전열체에 전기를 가하는 상태가 전환되도록 설치된 바이메탈스위치를 포함하여 구성되는데, 상기 전열체는 부압호스가 끼워지는 피트(본 실시예에서는 브레이크부스터측의 피트; 5))에 일체로 내장된 열선코일(7)로 구성되고;That is, it comprises a heating element installed to surround the diaphragm (1) and the spring (3) forming a check valve, and a bimetal switch installed to switch the state of applying electricity to the heating element in accordance with the ambient temperature, The heat transfer body is constituted by a heating coil 7 integrally incorporated in a pit (in this embodiment, a pit on the brake booster side 5) into which a negative pressure hose is fitted;

상기 바이메탈스위치는 배터리 등과 같은 전원에 연결된 제1전극띠(9)와, 상기 열선코일(7)의 일단에 연결된 제2전극띠(11)와, 상기 제1전극띠(9)에 고정단이 구비되고 온도변화에 따라 휘어져서 자유단이 상기 제2전극띠(11)에 접촉하도록 된 바이메탈플레이트(13)로 구성된다.The bimetal switch includes a first electrode strip 9 connected to a power source such as a battery, a second electrode strip 11 connected to one end of the heating coil 7, and a fixed end of the first electrode strip 9. It is provided with a bimetal plate 13 is bent in accordance with the temperature change to the free end is in contact with the second electrode strip (11).

물론, 상기 열선코일(7)의 타단은 전원에 직접 연결되어 있어서, 열선코일(7)의 일단을 전원에 연결시키는 상기 바이메탈플레이트(13)에 의해 열선코일(7)의 양단에 전기가 가해질 수 있도록 되어 있으며, 상기 바이메탈플레이트(13)는 주위온도가 0℃가 되면 상기 제1전극띠(9)와 제2전극띠(11)를 연결시키도록 형성하였다.Of course, the other end of the heating coil (7) is directly connected to a power source, the electricity can be applied to both ends of the heating coil (7) by the bimetal plate 13 to connect one end of the heating coil (7) to the power supply. The bimetal plate 13 is formed to connect the first electrode strip 9 and the second electrode strip 11 when the ambient temperature reaches 0 ° C.

상기 제1전극띠(9)와 제2전극띠(11) 및 바이메탈플레이트(13)는 상기 열선코일(7)이 형성된 피트(5)의 외측에 위치한 내부하우징(15)에 고정되고, 상기 내부하우징(15)의 외측에는 상기 바이메탈플레이트(13)의 작동공간을 확보하기 위한 외부하우징(17)이 설치되어 있다.The first electrode strip 9, the second electrode strip 11, and the bimetal plate 13 are fixed to an inner housing 15 positioned outside the pit 5 in which the heating coil 7 is formed. An outer housing 17 is installed outside the housing 15 to secure an operating space of the bimetal plate 13.

상기한 바와 같이 구성된 본 발명의 작용을 살펴보면 다음과 같다.Looking at the operation of the present invention configured as described above are as follows.

보통의 상온상태에서는 상기 바이메탈플레이트(13)는 상기 제1전극띠(9)와 제2전극띠(11)가 절연되도록 서로 연결하지 않고 있는 상태를 유지하므로 상기 열선코일(7)에는 전기가 공급되지 않으며, 이와 같은 상온상태에서는 결빙의 염려가 없으므로 상기 체크밸브는 엔진으로부터의 부압을 브레이크부스터에 원활하게 전달하여 적절한 제동작용이 이루어지는 상태를 가지게 된다.In the normal room temperature state, the bimetal plate 13 is not connected to each other so that the first electrode strip 9 and the second electrode strip 11 are insulated, so that electricity is supplied to the heating coil 7. In this case, since there is no fear of freezing in the room temperature state, the check valve smoothly transmits the negative pressure from the engine to the brake booster to have a proper braking action.

혹한기나 극한지에서 주위의 온도가 내려가 엔진룸의 온도가 0℃ 이하로 떨어지게 되면, 상기한 바와 같이 체크밸브에는 결빙의 염려가 있는데, 이때, 상기 바이메탈플레이트(13)는 상기 제1전극띠(9)와 제2전극띠(11)를 연결하는 상태로 휘어지게 되면서, 상기 제1전극띠(9)를 통해 공급된 배터리로부터의 전원을 상기 제2전극띠(11)로 전달하여 상기 열선코일(7)의 일단에 전력이 공급되도록 한다.If the ambient temperature drops in a cold or cold place and the temperature of the engine room drops to 0 ° C. or lower, there is a fear of freezing in the check valve as described above. In this case, the bimetal plate 13 may be formed of the first electrode strip ( 9) is bent to connect the second electrode strip 11, the power from the battery supplied through the first electrode strip (9) is transferred to the second electrode strip (11) to the heating coil Power is supplied to one end of (7).

따라서, 상기 열선코일(7)은 발열작용을 하여 상기 다이어프렘(1) 및 스프링(3)의 주변을 가열하게 되고, 동시에 상기 피트(5)에 일체로 설치되어 있어서, 상기 피트(5)를 가열함으로써, 피트(5)와 연결되는 부압호스와의 공기통로 부분에 열에너지를 전달할 수 있게 된다.Accordingly, the heating coil 7 generates heat to heat the periphery of the diaphragm 1 and the spring 3, and is integrally installed at the pit 5, thereby providing the pit 5. By heating, it is possible to transfer heat energy to the air passage portion of the negative pressure hose connected to the pit 5.

결국, 상기와 같은 열선코일(7)에서 제공된 열에너지에 의해 상기 체크밸브 및 그 주변은 온도가 상승하여 결빙의 염려가 제거되며, 상기와 같은 온도의 상승은 상기 바이메탈플레이트(13) 자체의 온도를 상승시켜, 상기 제2전극띠(11)를 통해 열선코일(7)로 전력을 공급하던 상태가 해제되도록 하고, 온도가 떨어지면 다시 상기와 같은 작용을 반복적으로 수행하면서, 체크밸브의 원활한 작동상태를 지속적으로 확보할 수 있게 한다.As a result, the temperature of the check valve and its surroundings is increased by the heat energy provided by the heating coil 7 so that there is no fear of freezing. Such an increase in temperature causes the temperature of the bimetal plate 13 itself to rise. As a result, the state of supplying power to the heating coil 7 through the second electrode strip 11 is canceled, and when the temperature drops, the above operation is repeatedly performed, and the smooth operation of the check valve is performed. It can be secured continuously.

이상과 같이 본 발명에 의하면, 엔진룸 내의 온도상태에 따라서 체크밸브의 결빙이 예상되는 온도가 되면 자동적으로 체크밸브를 가열하여 체크밸브의 결빙을 방지하도록 함으로써, 혹한기나 극한지에서도 브레이크부스터의 배력작용이 항상 원활한 상태로 확보될 수 있도록 하여 제동장치의 안정성을 향상시킨다.As described above, according to the present invention, when the temperature of the check valve is expected to be frozen according to the temperature state in the engine room, the check valve is automatically heated to prevent the check valve from freezing. Improves the stability of the braking system by ensuring that the action is always smooth.

Claims (5)

다이어프렘과 스프링의 주위를 감싸도록 설치된 전열체와;A heating element installed to surround the diaphragm and the spring; 주위 온도에 따라 상기 전열체에 전기를 가하는 상태가 전환되도록 설치된 바이메탈스위치;A bimetal switch installed to switch a state of applying electricity to the heating element according to an ambient temperature; 를 포함하여 구성된 것을 특징으로 하는 결빙 방지 체크밸브.Anti-icing check valve, characterized in that configured to include. 제1항에 있어서,The method of claim 1, 상기 전열체는 부압호스가 끼워지는 피트에 일체로 내장된 열선코일로 구성된 것The heating element is composed of a hot wire coil integrally embedded in the pit to which the negative pressure hose is fitted 을 특징으로 하는 결빙 방지 체크밸브.Anti-icing check valve, characterized in that. 제2항에 있어서,The method of claim 2, 바이메탈스위치는 전원에 연결된 제1전극띠와;The bimetal switch includes: a first electrode strip connected to a power source; 상기 열선코일의 일단에 연결된 제2전극띠와;A second electrode strip connected to one end of the hot wire coil; 상기 제1전극띠에 고정단이 구비되고 온도변화에 따라 휘어져서 자유단이 상기 제2전극띠에 접촉하도록 된 바이메탈플레이트;A bimetal plate having a fixed end in the first electrode band and being bent in accordance with a temperature change so that the free end is in contact with the second electrode band; 로 구성된 것을 특징으로 하는 결빙 방지 체크밸브.Anti-icing check valve, characterized in that consisting of. 제3항에 있어서,The method of claim 3, 상기 제1전극띠와 제2전극띠 및 바이메탈플레이트는 상기 열선코일이 형성된 피트의 외측에 위치한 내부하우징에 고정되고,The first electrode band, the second electrode band and the bimetal plate are fixed to an inner housing located outside the pit in which the heating coil is formed. 상기 내부하우징의 외측에는 상기 바이메탈플레이트의 작동공간을 확보하기 위한 외부하우징이 설치된 것The outer housing is installed on the outside of the inner housing to secure the operating space of the bimetal plate. 을 특징으로 하는 결빙 방지 체크밸브.Anti-icing check valve, characterized in that. 제3항에 있어서,The method of claim 3, 상기 바이메탈플레이트는 주위온도가 0℃가 되면 상기 제1전극띠와 제2전극띠를 연결시키는 상태로 되도록 형성된 것The bimetal plate is formed so as to connect the first electrode band and the second electrode band when the ambient temperature reaches 0 ° C. 을 특징으로 하는 결빙 방지 체크밸브.Anti-icing check valve, characterized in that.
KR10-2002-0073272A 2002-11-23 2002-11-23 check valve prevented from freezing KR100482139B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2532092A (en) * 2015-02-20 2016-05-11 Ford Global Tech Llc A method for preventing malfunctioning of a combined valve and aspirator assembly
EP3284644A1 (en) * 2016-08-17 2018-02-21 Ford Global Technologies, LLC A method of controlling an aspirator valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2532092A (en) * 2015-02-20 2016-05-11 Ford Global Tech Llc A method for preventing malfunctioning of a combined valve and aspirator assembly
GB2532092B (en) * 2015-02-20 2017-01-25 Ford Global Tech Llc A method for preventing malfunctioning of a combined valve and aspirator assembly
RU2698615C2 (en) * 2015-02-20 2019-08-29 ФОРД ГЛОУБАЛ ТЕКНОЛОДЖИЗ, ЭлЭлСи Method of preventing faulty operation of combined assembly of valve and aspirator of motor vehicle and motor vehicle
EP3284644A1 (en) * 2016-08-17 2018-02-21 Ford Global Technologies, LLC A method of controlling an aspirator valve

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