WO2015080312A1

WO2015080312A1 - Filter assembly for lpg automobile including checking function

Info

Publication number: WO2015080312A1
Application number: PCT/KR2013/010942
Authority: WO
Inventors: 김원택
Original assignee: 주식회사 더블유원; 주식회사 알앤더블유
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2015-06-04

Abstract

The present invention relates to a filter assembly for an LPG automobile including a checking function. Conventionally, foreign material in LP gas could be removed, but there have been problems of not only increased manufacturing costs but also a difficult manufacturing process due to an elevated number of components, as a check valve for preventing back flow of the LP gas and a filter for removing foreign material are separately constituted. To solve the above problems, the present invention provides a filter assembly for an LPG automobile including a check function, the assembly comprising a filter for filtering foreign material contained in the LP gas integrally formed with a check valve for preventing the back flow of the LP gas, thereby making it possible to simplify the manufacturing process as well as to reduce the number of components and so save on manufacturing costs.

Description

LFJI Automotive Filter Assembly with Check

The present invention relates to a filter assembly for an Elpji automobile including a check function, and in particular, to simplify the manufacturing process by integrally forming a filtration filter for filtering foreign substances contained in LP gas and a check valve to prevent backflow of LP gas. In addition, the present invention relates to an Elpji automotive filter assembly that includes a check function to reduce the number of parts to reduce the manufacturing cost.

In general, automotive engines are classified into gasoline engines and diesel engines according to the characteristics of the fuel, and in recent years, the use of LPG is gradually increasing according to the characteristics of fuel having a high vaporization point.

In the automobile engine, a fuel injection method of converting a fuel into a gaseous phase through a vaporizer and injecting it into a cylinder of an engine has been used, but recently, a method of directly injecting a liquid high pressure fuel into an engine through an injector has been used. .

The direct injection of high pressure fuel has been widely used in gasoline engines, but recently, many engines using LP gas have adopted the above method, and push fuel only by vapor pressure of the fuel. Unlike the existing LPG system, LPI (Liquefied Petroleum Injection) is applied to install a fuel pump in the cylinder to pump liquid LP gas and inject it through the injector from the engine.

However, the LPI system as described above directly injects the liquid LP gas into the combustion chamber as described above, so that foreign substances such as rust generated in the storage tank of the gas station and tar generated in the purification process of the LP gas together with the LP gas. Inflow into the vehicle caused a problem of deteriorating engine performance.

Accordingly, as shown in Korean Patent Publication No. 10-2009-0073483, an external fuel filling filter is installed between the fuel filling port and the fuel tank, or a high-pressure gas filling hose (EX: coupler such as Korean Patent Publication No. 10-1072779) is installed. Has been developed to remove foreign substances in LP gas by using a foreign substance filtering device between the valve and the filling valve.

However, these conventional technologies can remove foreign material geography contained in the LP gas, but the check valve to prevent backflow of the LP gas and the filtration filter for removing the foreign matter are separately configured, thereby increasing the number of parts and increasing the manufacturing cost. The manufacturing process had a difficult problem.

In order to solve this problem, the present invention forms a filtration filter for filtering foreign substances contained in the LP gas and a check valve to prevent backflow of the LP gas to simplify the manufacturing process and reduce the number of parts to reduce the manufacturing cost It is an object of the present invention to provide a filter assembly for the Elpji automotive including a check function that can be reduced.

In order to achieve the above object, the present invention includes a check function installed between the dispenser 10 and the cylinder 50 to deliver the LP gas supplied through the dispenser 10 to the cylinder 50 installed in the vehicle. In the LLP automobile filter assembly, the cover body 20 is screwed with the filling hose 12 connected to the dispenser 10 for the inflow of LP gas; An adapter 40 having one side screwed with the bomb 50; And one side is screwed with the other side of the cover body 20, inside the central portion is installed a filtration filter 32 for filtering the foreign matter contained in the LP gas injected through the cover body 20, The gas outlet 36 is screwed with the adapter 40 is formed on the side protruding, LP gas filtered by the filtration filter 32 inside the gas outlet 36 is a bomb ( Open to the LP gas to be delivered to 50) check to be closed after the completion of the LP gas filling to prevent the LP gas supplied to the cylinder 50 is backflowed into the filter housing (30) A valve 34 is installed, and the check valve 34 is spaced apart from the check valve 34 and the filtration filter 32 at the gas outlet 36 to open and close the check valve 34. Filter housing is formed with a projection (37) 30).

The filter filter 32 in the present invention, the filter unit 33 for filtering the foreign matter contained in the LP gas introduced to one side through the cover body 20; Protruding portion formed to protrude into the gas outlet 36 from the other side of the filter portion 33 and a gas outlet hole 35a through which the LP gas filtered out of the foreign substance by the filter portion 33 flows out from the filter portion 33. (35); And a protrusion 35 and the gas outlet 36 installed at an outer circumference of the protrusion 35 to prevent the LP gas from which foreign substances are not filtered out from the adapter 40 through the gas outlet 36. It characterized in that it comprises a filter sealing ring (35b) for sealing between the inside of.

The present invention seals between the other side of the cover body 20 and one side of the filter housing 30 to prevent the LP gas introduced from the dispenser 10 to be leaked to the outside; And an adapter seal which seals between the other side of the adapter 40 and the gas outlet 36 of the filter housing 30 to prevent the LP gas filtered by the filter filter 32 from flowing out. It further comprises a ring 42.

According to the present invention, since the foreign matter contained in the LP gas is filtered by the filter pipette, it is possible to prevent damage to the parts caused by the foreign matter, and when the LP gas is filled, the check valve is opened and the LP gas filling is completed. Since the check valve is closed after the LP gas injection, the check valve prevents the outflow of the LP gas even if the filling valve installed in the cylinder is not locked, thereby preventing the explosion accident caused by the LP gas leakage.

In addition, according to the present invention, since the filtration filter, the check valve and the adapter are integrated into one set, the number of parts can be reduced as well as the manufacturing process can be simplified as well as the number of parts compared with the conventional configuration. You can.

1 is a perspective cut cross-sectional view showing a filter assembly for an LPI automobile including a check function according to an embodiment of the present invention.

FIG. 2 is a perspective cutaway view illustrating a coupling state of the cover body, the filter housing, and the adapter shown in FIG. 1. FIG.

3 is a view showing a state of use of the filter assembly for the LLP automobile including the check function according to an embodiment of the present invention.

The objects, specific advantages and novel features of the present invention will become more apparent from the detailed description thereof and one embodiment in connection with the accompanying drawings.

Prior to this, terms or words used in this specification and claims should not be interpreted in a conventional, dictionary sense, and the inventors will be required to properly define the concepts of terms in order to best describe their invention as the best solution. On the basis of the principle that it can be interpreted as meaning and concept corresponding to the technical idea of the present invention.

In addition, in the present specification, in adding reference numerals to the components of the angular surface, it should be noted that the same components only have the same number as possible, even if displayed on different drawings.

Incidentally, in the following description of the present invention, if it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective cut cross-sectional view showing a filter assembly for an LPI automobile including a check function according to an embodiment of the present invention, Figure 2 is a perspective cut surface showing the coupling state of the cover body, the filter housing and the adapter shown in FIG. 3 is a view showing a state of use of the filter assembly for the LLP automobile including a check function according to an embodiment of the present invention.

1 to 3, the filter unit 1 for an Elpji automobile including a check function according to an embodiment of the present invention includes a high pressure gas (ie, LP gas) supplied through a dispenser 10. A cover body 20 which is installed between the dispenser 10 and the cylinder 50 to be transferred to a bomb 50 installed in a vehicle, and which connects the inflow of LP gas to the dispenser 10 at one side; One side is screwed with the other side of the cover body 20 to filter the foreign matter of the LP gas, outflow of the filtered LP gas foreign matter, the filter housing 30 to prevent the backflow LP gas flowing back into the inside; A filtration filter 32 installed inside the filter housing 30 to filter foreign matter contained in the LP gas; A check valve (34) installed inside the filter housing (30) to be spaced apart from the filtration filter (32) to prevent the LP gas flowing out to the back flow into the filter housing (30); A housing sealing ring 31 for sealing between the cover body 20 and the filter housing 30 so that the LP gas introduced from the dispenser 10 does not flow out; One side is screwed with the cylinder 50, the other side is screwed with the other side of the filter housing 30 adapter for outflowing the LP gas filtered foreign matter by the filter filter 32 to the cylinder 50 40; An adapter sealing ring 42 for sealing the filter housing 30 and the adapter so that the introduced LP gas is not leaked to the outside; And a filter sealing ring 35b installed in the filtration filter 32 to prevent the LP gas from which foreign substances are not filtered out from the adapter 40.

The cover body 20 is connected to the filling hose 12 formed in the dispenser 20 so that a gas inlet 22 is protruded on one side to inject LP gas, and an outer circumference of the gas inlet 22 is formed. The thread 24 is formed.

In addition, the other side of the cover body 20 is formed with a connector 26 having an inner diameter larger than the inner diameter of the gas inlet 22, the outer periphery of the connector 26 and the filter housing 30 to be described later and Threads 24 are formed for screwing together.

The cover body 20 is a gas inlet 22 protruding to one side is screwed with the filling hose 12 connected to the dispenser 10, the connector 26 protruding to the other side and the filter housing 30 The screw coupled to the LP gas supplied through the filling hose 12 is delivered to the filter housing 30 through the gas inlet 22 and the connector 26.

The filter housing 30 is formed in a hollow shape so that the filtration filter 32 and the check valve 34 are seated therein, and one side thereof has an inner diameter corresponding to the outer diameter of the connector 26 of the cover body 20. Is formed, the screw thread 24 is formed on the inner surface of one side to be screwed with the connector 26 of the cover body 20.

At this time, the LP gas introduced from the dispenser 10 is leaked to the outside of the filter assembly 1 for LPG automobile inside one side of the filter housing 30 which is screwed with the connector 26 of the cover body 20. The housing sealing ring 31 for sealing between the connector 26 of the cover body 20 and the inner side of one side of the filter housing 30 is installed.

Meanwhile, the filtration filter 32 is installed inside the central portion of the filter housing 30, and the gas outlet 36 provided with a check valve 34 is protruded from the other side of the filter housing 30. The outer periphery of the gas outlet 36 is formed with a screw thread 24 to be screwed with the adapter 40 to be described later.

At this time, the check valve 34 is seated inside the gas outlet 36 to separate the check valve 34 from the filtration filter 32 and to open and close the check valve 34. The projection 37 is formed.

Accordingly, through one side of the filter housing 30, the filtration filter 32 installed inside the central portion of the filter housing 30 and the other side of the filter housing 30, that is, through the gas outlet 36. The check valve 34 installed inside the gas outlet 36 is separated by the protrusion 37.

The filtration filter 32 is a filter unit 33 for filtering foreign substances contained in the LP gas introduced into one side through the cover body 20 and the gas outlet 36 inside the other side of the filter unit 33. The protrusion 35 is formed to protrude from the gas outlet hole 35a through which the LP gas from which the foreign matter is filtered out by the filter part 33 is formed at the center thereof.

In the outer periphery of the protrusion part 35 of the filtration filter 32, the protrusion part 35 and the gas are prevented to prevent the LP gas from which foreign substances are not filtered out to the adapter 40 through the gas outlet 36. A filter sealing ring 35b for sealing between the insides of the outlets 36 is provided.

The check valve 34 is installed inside the gas outlet 36 of the filter housing 30 so that the LP gas filtered by the filtration filter 32 is delivered to the cylinder 50 when the LP gas is filled. It is opened and operated to close after the filling of the LP gas is completed in order to prevent the LP gas supplied to the cylinder 50 from flowing back into the filter housing 30.

As such, the check valve 34 is a well-known configuration that is operated through a spring, so a detailed description thereof will be omitted.

The adapter 40 is screwed with the filling valve (not shown) installed on the cylinder 50, the other side is screwed with the other side of the filter housing 30 by the filtration filter 32 LP gas filtered out of the foreign substance is discharged to the bomb 50.

To this end, the adapter 40 has a thread 24 for screwing the outer periphery and the outer periphery of the gas outlet 36 of the filter housing 30 is formed on the other inner periphery, the one side outer periphery the cylinder 50 Thread 24 is formed for screwing with the filling valve installed in the).

Meanwhile, an adapter sealing ring 42 is installed between the other side of the adapter 40 and the filter housing 30 through the gas outlet 36 to flow through the gas outlet 36 of the filter housing 30. LP gas is prevented from leaking to the outside of the Elpji automotive filter assembly (1).

Looking at the operation and effect of the present invention configured as described above, since the pressure is not applied to the check valve 34 in the initial state in which LP gas is not injected into the gas inlet 22, the check valve 34 by the elasticity of the spring One side of the) is in close contact with the protrusion 37 protruding inside the gas outlet 36 to seal between the check valve 34 and the filtration filter 32.

On the other hand, when the LP gas is injected into the gas inlet 22 after opening the filling valve installed in the cylinder 50 for gas injection into the cylinder 50, the filtration filter 32 is foreign matter contained in the injected LP gas The check valve 34 is opened by the pressure of the LP gas in which the foreign matter is filtered by the filtration filter 32.

As a result, the filtered LP gas is stored in the cylinder 50 through the gas outlet 36 and the adapter 40.

On the other hand, when the injection of the LP gas is completed through the above process, the inlet of the LP gas from the dispenser 10 is stopped, the LP inlet from the gas inlet 22 by the LP gas stored in the cylinder 50 side of the adapter 40 Since the pressure is increased, one side of the check valve 34 is in close contact with the protrusion 37 protruding inside the gas outlet 36 due to the elasticity of the spring, so that the check valve 34 and the filtration filter 32 are separated. It is sealed.

In this way, the present invention is the check valve 34 is opened when the LP gas filling, and closed after the completion of the LP gas filling check valve 34 even if you do not lock the filling valve installed in the cylinder 50 after the LP gas injection Since it prevents the outflow of LP gas, it is possible to prevent the explosion accident caused by the leakage of LP gas.

In addition, the present invention, since the foreign matter contained in the LP gas is filtered by the filtration filter 32, it is possible to prevent the damage of the goods by the foreign matter.

In addition, the present invention is not only because the filtration filter 32, the check valve 34 and the adapter 40 is configured in one set, but also can reduce the number of parts as compared to the conventional configuration consisting of a separate configuration and simplify the manufacturing process It can reduce the production cost.

Although one embodiment of the present invention has been described with reference to the accompanying drawings, it is merely an example, and those skilled in the art may understand that various modifications and equivalent other embodiments are possible therefrom. will be.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims

In the LPG automotive filter assembly comprising a check function installed between the dispenser 10 and the cylinder 50 to deliver the LP gas supplied through the dispenser 10 to the cylinder 50 installed in the vehicle,

A cover body 20 in which one side is screwed with the filling hose 12 connected to the dispenser 10 for the inflow of LP gas;

An adapter 40 having one side screwed with the bomb 50; And

One side is screwed with the other side of the cover body 20, inside the central portion is installed a filtration filter 32 for filtering foreign substances contained in the LP gas injected through the cover body 20, the other side A gas outlet 36 screwed with the adapter 40 is formed to protrude, and LP gas filtered by the filtration filter 32 is bombarded through the adapter 40 inside the gas outlet 36. The check valve is opened when the LP gas is filled to be delivered to) and closed after the filling of the LP gas is completed to prevent the LP gas supplied to the bomb 50 from flowing back into the filter housing 30. (34) is provided, the check valve 34 to the gas outlet 36 to separate the check valve 34 and the filtration filter 32 and to open and close the check valve 34 is made. The filter housing 30 in which the protrusions 37 are formed. Injector auto filter assembly that includes a check function comprising.
The method according to claim 1,

The filtration filter 32,

A filter unit 33 for filtering foreign substances contained in the LP gas introduced to one side through the cover body 20;

Protruding portion formed to protrude into the gas outlet 36 from the other side of the filter portion 33 and a gas outlet hole 35a through which the LP gas filtered out of the foreign substance by the filter portion 33 flows out from the filter portion 33. (35); And

LP gas which is not filtered out of the foreign substance is installed on the outer periphery of the protrusion 35 to prevent the LP 40 from flowing out to the adapter 40 through the gas outlet 36 of the protrusion 35 and the gas outlet 36. Filter assembly for the Elpji automotive including a check function characterized in that it comprises a filter sealing ring (35b) for sealing between the inside.
The method according to claim 1,

A housing sealing ring 31 which seals between the other side of the cover body 20 and one side of the filter housing 30 to prevent LP gas introduced from the dispenser 10 from flowing out; And

Adapter sealing ring for sealing between the other side of the adapter 40 and the gas outlet 36 of the filter housing 30 to prevent the LP gas filtered by the filter filter 32 to flow out to the outside Elpji automotive filter assembly comprising a check function, characterized in that it further comprises (42).