KR20120008872A - Structure of return-valve for automobile using liquefied-petroleum-gas - Google Patents

Structure of return-valve for automobile using liquefied-petroleum-gas Download PDF

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KR20120008872A
KR20120008872A KR1020100070164A KR20100070164A KR20120008872A KR 20120008872 A KR20120008872 A KR 20120008872A KR 1020100070164 A KR1020100070164 A KR 1020100070164A KR 20100070164 A KR20100070164 A KR 20100070164A KR 20120008872 A KR20120008872 A KR 20120008872A
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South Korea
Prior art keywords
lpg
return valve
cylinder
float
coupled
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KR1020100070164A
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Korean (ko)
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KR101662509B1 (en
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박정수
송주태
최원규
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현대자동차주식회사
기아자동차주식회사
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Priority to KR1020100070164A priority Critical patent/KR101662509B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
    • F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief valves
    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/08—Mounting arrangements for vessels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0382—Constructional details of valves, regulators

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

PURPOSE: A return valve structure for an LPG vehicle is provided to improve NVH(Noise, Vibration, Harshness) problems by preventing falling sounds regardless of the built-in position of a fuel pump. CONSTITUTION: A return valve structure for an LPG vehicle comprises a tank(100) which is coupled to a fuel pump(40) and stores LPG, a float(10) which is floated on LPG surface inside the tank, a return valve(20) which is coupled to the float with a nozzle facing down, and a return line(30) which is coupled to the inlet of the return valve.

Description

ＬＰＧ 차량용 리턴밸브의 구조{Structure of return-valve for automobile using liquefied-petroleum-gas } Structure of return-valve for automobile using liquefied-petroleum-gas}

본 발명은 액화석유가스(LPG)를 연료로 사용하는 차량용 리턴밸브의 구조에 관한 것으로, 더욱 상세하게는 봄베(bomb, LPG 저장탱크) 내에서 LPG 의 수면 위로 부양(浮揚)되는 리턴밸브에 관한 것이다.
The present invention relates to a structure of a return valve for a vehicle using liquefied petroleum gas (LPG) as a fuel, and more particularly to a return valve that is supported above the surface of the LPG in the bomb (bomb, LPG storage tank) will be.

LPG 는 액화석유가스(liquefied petroleum gas)의 약자로서 액체 형태로 보관된다. LPG 는 석유화학용 에틸렌 공정에서 함께 생산되고 상대적으로 저렴하므로 가정용, 공업용 연료는 물론 차량용 연료로서도 사용되고 있다.LPG stands for liquefied petroleum gas and is stored in liquid form. LPG is produced together in the petrochemical ethylene process and is relatively inexpensive, so it is used as a fuel for household and industrial as well as for vehicles.

LPG 를 연료로 사용하는 차량은 LPG 를 보관하기 위하여 봄베를 구비한다.LPG fueled vehicles are equipped with a cylinder to store LPG.

종래의 LPG 차량은 가솔린 차량의 엔진과 구조에 있어 유사하나, 가솔린 차량의 엔진과 가장 대비되는 특징은 연료분사장치가 삭제된 구조였다. LPG 는 상온에서도 쉽게 기화되므로 외기와 연료를 혼합하여 기화시키는 연료분사장치가 불필요하였다.The conventional LPG vehicle is similar in structure to an engine of a gasoline vehicle, but the most contrasting feature of the engine of the gasoline vehicle is a structure in which a fuel injection device is deleted. Since LPG is easily vaporized even at room temperature, it is not necessary to use a fuel injection device to mix and vaporize air and fuel.

하지만, 최근 LPG 차량은 안정적인 연료를 공급하고 연소효율을 증가시켜 겨울철 시동불량을 방지하며 출력을 향상하고 연비를 높이기 위하여 연료분사장치를 구비하여 출시되고 있다. 본 출원인은 이와 같이 연소실에 LPG 연료를 직접분사하는 방식으로 구동하는 LPI(Liquefied Petroleum Injection)엔진 시스템을 개발하여 출시한 바 있다.However, recently, LPG vehicles have been introduced with fuel injection devices to supply stable fuel and increase combustion efficiency to prevent starting failures in winter, to improve output, and to increase fuel efficiency. The present applicant has developed and released a LPI (Liquefied Petroleum Injection) engine system which is driven by injecting LPG fuel directly into the combustion chamber.

한편, 엔진에 LPG 를 직접분사하기 위해서는 고압을 유지한 상태로 LPG 를 엔진으로 이송시켜야 했으며, 이를 위해서 도 1 에 도시된 바와 같이, 봄베 내부에는 연료펌프(3)가 내장되었었다.Meanwhile, in order to directly inject LPG into the engine, the LPG had to be transferred to the engine while maintaining a high pressure. For this purpose, as illustrated in FIG. 1, the fuel pump 3 was built in the bomb.

그러나, 봄베 내부에 연료펌프가 내장됨으로서 다음과 같은 불리한 점이 있었다. 우선, 연료펌프 고장으로 인한 수리시, 봄베 내에 남은 LPG 를 먼저 회수하여야 됐으므로 수리를 위한 시간 및 비용이 많이 소요되었으며, 진동 및 소음을 유발하는 연료펌프를 내장하였으므로 이를 감쇄시키기 위한 감쇄 장치가 추가적으로 설치되었다. 그리고, 봄베는 금속재 용기를 용접하여 제작되나, 용접 작업시 발생되는 이물질은 연료펌프 고장의 원인이 될 수 있었다. 또한, 봄베에서 연료펌프 분해 또는 탈거시 잔류 LPG 는 작업자에게 유해하게 작용할 수 있었다.However, the fuel pump inside the cylinder has the following disadvantages. First of all, when repairing due to a fuel pump failure, LPG remaining in the bomb had to be recovered first, which required a lot of time and cost for repairs, and a built-in fuel pump that caused vibration and noise was added. Installed. In addition, the bomb is manufactured by welding a metal container, but foreign substances generated during the welding operation may cause a fuel pump failure. In addition, residual LPG could be detrimental to the operator when disassembling or removing the fuel pump in the bomb.

따라서, 이외 같은 문제점을 해결하기 위해서 연료펌프를 봄베의 외부에 설치하는 구조에 대하여 개발이 진행되고 있다.Therefore, in order to solve the other problem, the development of the structure which installs a fuel pump outside of a cylinder is progressing.

한편, LPG 자동차는, 엔진에 연료를 제공하는 피드라인(feedline) 내의 LPG 압력이 엔진에서 요구되는 압력보다 높을 경우, 리턴라인(returnline)을 통해 LPG 연료의 일부는 봄베 내부로 유입되는 구조를 갖는다. 따라서, 상기 리턴라인의 끝단에는, 봄베 내부로 리턴라인을 통해 유입된 LPG 를 분사시키되 봄베 내부의 연료가 리턴라인으로의 역류하는 것을 방지하는 리턴밸브(2)에 연결된다.On the other hand, the LPG vehicle has a structure in which a part of the LPG fuel is introduced into the cylinder through the return line when the LPG pressure in the feedline for supplying fuel to the engine is higher than the pressure required by the engine. . Therefore, at the end of the return line, it is connected to the return valve (2) for injecting the LPG introduced through the return line into the cylinder, but prevents the fuel inside the bomb flows back to the return line.

종래에는 도 1 에 도시된 바와 같이, 리턴밸브(2)가 연료분사장치와 통신하며 LPG 의 송출량 및 압력 등을 제어하는 멀티밸브조립체(1)에 모듈화되어 봄베의 상단에 설치되었다.
In the related art, as shown in FIG. 1, the return valve 2 is modularized in a multi-valve assembly 1 which communicates with a fuel injection device and controls the amount and pressure of LPG, and is installed at the top of the cylinder.

한편, 봄베 내부의 LPG의 역류를 방지하기 위해선 리턴밸브의 분사구가 LPG의 수면 위로 위치하는 것이 바람직하다.On the other hand, in order to prevent the reverse flow of the LPG inside the cylinder, it is preferable that the injection port of the return valve is located above the surface of the LPG.

하지만, 상기 리턴밸브에서 토출되는 LPG 는 액체 및 기체가 혼재된 상태로서 종래의 연료펌프 내장 구조에서는 봄베 내부에 LPG 수위가 낮을 경우 연료펌프를 타고 흘러내렸거나 수직 낙하하였다. 그러나, 이 경우 낙하음이 발생을 발생시켜 차량의 NVH(Noise, vibration, harshness) 성능에 안 좋은 영향을 미쳤다.However, LPG discharged from the return valve is a mixed state of liquid and gas, and in the conventional fuel pump built-in structure, when the LPG level is low inside the cylinder, the LPG flows down or falls vertically. However, in this case, the falling sound generated, adversely affecting the vehicle's noise, vibration, harshness (NVH) performance.

따라서, 새로운 리턴밸브의 개발이 요구되었으며, 본 발명은 상기와 같은 요구를 충족시키기 위해 발명된 것으로서, 연료펌프의 장착 위치와 상관없이 낙하음을 방지하여 NVH(Noise, vibration, harshness)가 개선된 LPG 차량용 리턴밸브 구조를 제공하는 것에 주목적이 있다.
Therefore, the development of a new return valve has been required, and the present invention has been invented to meet the above requirements, and the NVH (Noise, vibration, harshness) is improved by preventing falling sound regardless of the mounting position of the fuel pump. The main object is to provide a return valve structure for the LPG vehicle.

상기와 같은 목적을 달성하기 위한 본 발명은, 리턴라인을 통해 봄베 내부로 LPG 를 분사(噴射)하며 역류를 방지하는 LPG 차량용 리턴밸브의 구조에 있어서, 상기 봄베는 내부에 저장된 LPG 의 수면 위로 부양되는 플로트를 내장하되, 상기 플로트에 리턴밸브가 결합되어 상기 리턴밸브의 분사구(噴射口)는 LPG 의 수면에서 일정한 거리가 유지되는 것을 특징으로 한다.The present invention for achieving the above object, in the structure of the LPG vehicle return valve to prevent the reverse flow by injecting LPG into the cylinder through the return line, the cylinder is supported above the surface of the LPG stored therein The built-in float, but the return valve is coupled to the float is characterized in that the injection hole (噴射 口) of the return valve is maintained at a constant distance from the surface of the LPG.

그리고, 일측 끝단은 봄배의 내주면에 고정장착된 고정바;와 상기 고정바의 타측 끝단에서 LPG 의 수면 높이에 따라 회전가능하게 힌지결합된 회동바;를 더 포함하고, 상기 플로트는 회동바의 끝단에서 결합된다. 아울러, 상기 봄베는 가로로 놓인 원기둥 형상이고 상기 고정바와 회동바가 힌지결합된 지점은 봄베의 중심축 상에 위치하여, 상기 플로트는 봄베의 내주면과의 최단거리가 일정하게 유지된다.
And, the one end further comprises a fixed bar fixedly mounted on the inner circumferential surface of the spring vessel; and a pivoting bar rotatably hinged in accordance with the water level of LPG at the other end of the fixed bar; The float is the end of the rotating bar Are combined in. In addition, the cylinder is a cylindrical shape placed horizontally and the fixed bar and the rotation bar is hingedly coupled to the point located on the central axis of the cylinder, the float is kept constant with the inner peripheral surface of the cylinder is constant.

상기와 같은 구성의 리턴밸브는 LPG 수면에서 높이가 일정하게 유지되므로, LPG 의 낙하음 발생을 방지하는 효과가 있다.Since the return valve of the above configuration is kept constant in the LPG water surface, there is an effect of preventing the occurrence of falling sound of the LPG.

아울러, 플로트는 고정바 및 회동바에 결속되므로 플로트가 봄베 내부에 충돌하는 것을 방지하며, 상기 플로트는 봄베의 내주면과 최단거리를 일정하게 두고 상승하강하므로, 봄베와 충돌없이 더 높거나 낮은 수면에서도 효율적으로 부양될 수 있는 효과가 있다.
In addition, the float is bound to the fixed bar and the rotation bar to prevent the float from colliding inside the cylinder, and the float descends at a constant distance from the inner circumferential surface of the cylinder, so it is efficient even at higher or lower water surface without colliding with the cylinder. There is an effect that can be sustained.

도 1 은 종래의 연료펌프를 내장한 봄베의 모습을 도시한 사시도,
도 2 는 본 발명의 바람직한 실시예에 따른 리턴밸브를 구비한 봄베의 모습을 도시한 사시도,
도 3 및 도 4 는 본 발명의 바람직한 실시예에 따른 리턴밸브가 회동하는 모습을 도시한 사시도 및 단면도.1 is a perspective view showing a state of a bomb with a conventional fuel pump,
Figure 2 is a perspective view showing the appearance of a bomb with a return valve according to a preferred embodiment of the present invention,
3 and 4 are a perspective view and a cross-sectional view showing a state in which the return valve is rotated according to a preferred embodiment of the present invention.

이하, 도면을 참조하여 본 발명의 바람직한 실시예를 더욱 상세히 설명한다.Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention in more detail.

도 2 및 도 3 을 참조하면, 연료펌프(40)와 결합된 봄베(100) 내에는 LPG 가 저장된다. 상기 봄베(100) 내부에는 플로트(10)가 LPG 의 수면 위로 부양되되, 플로트(10)에는 리턴밸브(20)가 분사구(21)가 아래로 향한 상태로 결합된다.2 and 3, LPG is stored in the cylinder 100 coupled with the fuel pump 40. The float 10 is floated above the water surface of the LPG in the cylinder 100, the return valve 20 is coupled to the float 10 with the injection port 21 facing down.

상기 리턴밸브(20)는 유입구(22)에 리턴라인(30)이 결합되어, 리턴라인(30)을 통해 유입된 LPG 를 봄베(100) 내부로 분사하되 봄베(100)에 저장된 LPG 가 리턴라인(30)으로 역류하는 것은 방지한다. 본 발명의 LPG 차량용 리턴밸브(20)는 공지된 다양한 구조로 실시될 수 있으나, 볼트체결 등을 통하여 플로트(10)에 결합될 수 있도록 제조된다. The return valve 20 is coupled to the return line 30 to the inlet 22, to spray the LPG introduced through the return line 30 into the cylinder 100, but the LPG stored in the cylinder 100 return line Backflow to 30 is prevented. LPG vehicle return valve 20 of the present invention can be implemented in a variety of known structures, it is manufactured to be coupled to the float 10 through the fastening bolts and the like.

한편, 상기 플로트(10)는, 리턴밸브(20)가 항시 자세를 유지할 수 있도록 회동바(11)의 일측 끝단에서 회전가능하게 결합된다. 그리고, 상기 회동바(11)의 타측 끝단은 봄배(100)의 내주면에 고정장착된 고정바(13)와 결합된다. 상기 고정바(13)는 힌지조립체(12)를 통하여 회동바(11)와 결합된다. On the other hand, the float 10, the return valve 20 is rotatably coupled at one end of the rotation bar 11 to maintain the posture at all times. And, the other end of the rotation bar 11 is coupled to the fixed bar 13 fixedly mounted on the inner circumferential surface of the spring vessel (100). The fixing bar 13 is coupled to the rotation bar 11 through the hinge assembly 12.

그리고, 상기 고정바(13)와 회동바(11)가 결합된 지점은 도 4 에 도시된 바와 같이 봄베(100)의 중심축에 위치되는 것이 바람직하다. 즉, 통상적으로 봄베는 원기둥 형상으로 차체에서 가로로 눕혀진 형태로 배치된다. 따라서, 플로트(10)가 봄베(100) 내부에서 더욱 효율적으로 상승하강 할 수 있도록 봄베(100)의 중심축을 회전축으로 회동하는 것이 바람직하다. In addition, the fixed bar 13 and the pivot bar 11 is coupled to the point is preferably located in the central axis of the cylinder 100, as shown in FIG. That is, the bomb is typically arranged in a cylindrical shape lying horizontally on the vehicle body. Therefore, it is preferable to rotate the central axis of the cylinder 100 to the rotation axis so that the float 10 can be raised and lowered more efficiently in the cylinder 100.

이와 같이 구성된 본 발명의 리턴밸브(10)는 LPG 의 수면과 분사구(21)의 높이가 LPG 수면의 높이와 상관없이 항상 일정하므로 낙하음을 발생시키지 않으며, 별도의 수위 측정 장치를 봄베 내부에 구비할 필요없이, 수면의 높이를 측정하는 게이지를 플로트에 부설시키되 플로트 또는 리턴밸브와 모듈화함으로서 봄베 내부의 구조를 더욱 단순화시킬 수 있는 효과가 있다. The return valve 10 of the present invention configured as described above does not generate a dropping sound because the height of the surface of the LPG and the injection port 21 is always constant regardless of the height of the surface of the LPG, and a separate level measuring device is provided inside the cylinder. It is not necessary to install a gauge for measuring the height of the water on the float, but by modularizing with the float or return valve, there is an effect that can further simplify the internal structure of the bomb.

이상과 같이 본 명세서와 도면에 개시된 실시예들은 본 발명의 이해를 돕기 위해 특정 예를 제시한 것에 지나지 않으며, 본 발명의 범위를 제한하고자 하는 것은 아니다. 여기에 개시된 실시예들 이외에도 본 발명의 기술적 사상에 바탕을 둔 다른 변형예들이 실시 가능하다는 것은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 자명한 것이다.
As described above, the embodiments disclosed in the specification and the drawings are only presented as specific examples to aid the understanding of the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

10 : 플로트
11 : 회동바
12 : 힌지조립체
13 : 고정바
20 : 리턴밸브10: float
11: rotating bar
12: hinge assembly
13: fixed bar
20: return valve

Claims (3)

리턴라인을 통해 봄베 내부로 LPG 를 분사하며 역류를 방지하는 LPG 차량용 리턴밸브의 구조에 있어서,
상기 봄베는 내부에 저장된 LPG 의 수면 위로 부양되는 플로트를 내장하되, 상기 플로트에 리턴밸브가 결합되어 상기 리턴밸브의 분사구는 LPG 의 수면에서 일정 거리가 유지되는 것을 특징으로 하는 LPG 차량용 리턴밸브의 구조.
In the structure of the LPG vehicle return valve to prevent backflow by injecting LPG into the cylinder through the return line,
The cylinder has a built-in float that floats above the surface of the LPG stored therein, the return valve is coupled to the float structure of the return valve for LPG vehicle, characterized in that the injection port of the return valve is maintained at a certain distance from the surface of the LPG .
제 1 항에 있어서, 일측 끝단은 봄배의 내주면에 고정장착된 고정바;와 상기 고정바의 타측 끝단에서 LPG 의 수면 높이에 따라 회전가능하게 힌지결합된 회동바;를 더 포함하고, 상기 플로트는 회동바의 끝단에서 결합된 것을 특징으로 하는 LPG 차량용 리턴밸브의 구조.
According to claim 1, One end is further comprises a fixed bar fixed to the inner circumferential surface of the spring ship; and the rotation bar hinged rotatably hinged according to the water height of the LPG at the other end of the fixed bar; LPG vehicle return valve structure, characterized in that coupled to the end of the rotation bar.
제 2 항에 있어서, 상기 봄베는 가로로 놓인 원기둥 형상이고 상기 고정바와 회동바가 힌지결합된 지점은 봄베의 중심축 상에 위치하여, 상기 플로트는 봄베의 내주면과의 최단거리가 일정하게 유지되는 것을 특징으로 하는 LPG 차량용 리턴밸브의 구조.
3. The method of claim 2, wherein the cylinder has a horizontal cylindrical shape and the fixed bar and the rotation bar is hingedly coupled to the center axis of the cylinder, so that the float is maintained at a shortest distance to the inner peripheral surface of the cylinder constant LPG vehicle return valve structure.
KR1020100070164A 2010-07-20 2010-07-20 Structure of return-valve for automobile using liquefied-petroleum-gas KR101662509B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101677692B1 (en) * 2015-11-04 2016-11-18 주식회사 케이앤씨 Valve apparatus for lpg container for vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030048603A (en) * 2001-12-12 2003-06-25 (주)모토닉 Gas feeding apparatus of gas fuel vehicles
KR20040051624A (en) * 2002-12-11 2004-06-19 현대자동차주식회사 Noise reducing apparatus of fuel tank
KR20080108795A (en) * 2007-06-11 2008-12-16 현대자동차주식회사 Return-pressure adjustable type jet valve
WO2009013776A1 (en) * 2007-07-24 2009-01-29 Bigas International Autogas Systems S.R.L. A multi-valve device to supply gas for a liquid gas tank

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030048603A (en) * 2001-12-12 2003-06-25 (주)모토닉 Gas feeding apparatus of gas fuel vehicles
KR20040051624A (en) * 2002-12-11 2004-06-19 현대자동차주식회사 Noise reducing apparatus of fuel tank
KR20080108795A (en) * 2007-06-11 2008-12-16 현대자동차주식회사 Return-pressure adjustable type jet valve
WO2009013776A1 (en) * 2007-07-24 2009-01-29 Bigas International Autogas Systems S.R.L. A multi-valve device to supply gas for a liquid gas tank

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101677692B1 (en) * 2015-11-04 2016-11-18 주식회사 케이앤씨 Valve apparatus for lpg container for vehicle

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