KR200439449Y1 - A multi-valve with separate valves of fuel tank for gas fuel vehicles - Google Patents

Abstract

The present invention relates to a multi-valve for a fuel tank of a gas fuel vehicle,

A housing plate coupled to the fuel tank, a valve block formed at an upper portion of the housing plate, flow paths formed inside the valve block, an EF valve connected to the flow paths to regulate fuel flow, and a relief valve; As the return valve is installed, the EF valve, the relief valve and the return valve and the valve block are installed to be detachable from the housing plate, so that the processing of the multi-valve is easy and the manufacturing labor is reduced. The cost of manufacturing can be greatly reduced because the material of valve block can be different.

Gas, Fuel, Tank, Multivalve, Valve, Housing Plate

Description

Valve separate type multi-valve for fuel tank of gas fuel vehicle {A MULTI-VALVE WITH SEPARATE VALVES OF FUEL TANK FOR GAS FUEL VEHICLES}

1 is a configuration diagram showing a configuration of a fuel supply device of a general gas fuel vehicle.

Fig. 2A is a plan view showing a multi-valve for a fuel tank of a conventional gas fuel vehicle.

Fig. 2B is a bottom view showing a multi-valve for a fuel tank of a conventional gas fuel vehicle.

Fig. 2C is a side view showing a fuel tank multi-valve of a conventional gas fuel vehicle.

3 is a perspective view showing a valve separate type multi-valve for a fuel tank of a gas fuel vehicle according to the present invention.

Figure 4 is an exploded perspective view showing a valve separate type multi-valve for a fuel tank of a gas fuel vehicle according to the present invention.

Figure 5 is a bottom perspective view showing a valve separate type multi-valve for a fuel tank of a gas fuel vehicle according to the present invention.

FIG. 6 is a view showing the valve assembly in FIG. 4, (a) is a plan view, and (b) is a bottom view.

FIG. 7 is a plan view of the housing plate in FIG. 4. FIG.

8 is a perspective view showing a valve-separated multi-valve for a fuel tank of a gas fuel vehicle according to another embodiment of the present invention.

9 is a bottom perspective view of FIG. 8.

※ Explanation of Major Drawings

1 ... fuel tank

2 ... fuel pump

100 ... Multivalve

110 ... housing plate

120 ... valve block

150 ... relief valve

170 ... E.F valve

180 ... Vent

181 vent holes

190 ... bolts

200 ... Return Valve

500 ... fuel pump

The present invention relates to a valve-separated multi-valve for a fuel tank of a gas fuel vehicle, and more particularly, to be installed in a fuel tank of a gas fuel vehicle, by combining a housing plate and a valve assembly detachably, thereby reducing manufacturing costs and reducing production costs. The present invention relates to a multi-valve separated valve that can be saved.

As is known, the internal combustion engine of a gas vehicle obtains rotational power by converting the linear reciprocating motion into a rotational motion as a crank mechanism by linearly reciprocating the piston with the explosive force generated by burning the mixer sucked into the combustion chamber. Mainly, the engine of a vehicle is representative.

In the gas vehicle engine, LPG fuel or natural gas fuel is liquefied and stored at a predetermined pressure in a cylinder, which is a fuel tank, and then vaporized during operation of the engine to be supplied to the combustion chamber together with air as a mixer.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a configuration of a conventional fuel supply apparatus for use in a vehicle. The configuration of a conventional fuel supply apparatus for use in a gas vehicle will be described with reference to the drawings.

A fuel pump 2 for pumping and discharging the fuel in a liquid state is installed at an inner lower portion of the fuel tank 1 in which LPG or natural gas used as a vehicle fuel is liquefied and stored.

The fuel pipe 3 is connected to the fuel pump 2, and when the fuel in the liquid state pumped by the operation of the fuel pump 2 is supplied to the injector 5 of the engine 4, the injector 5 Fuel is injected to allow the engine 4 to operate.

Here, in the middle of the fuel pipe 3, first and second supply shutoff valves 6a and 6b are provided for shutting off the supply of fuel when an emergency occurs, and the first and second supply shutoff valves ( It can be seen that the first filter 7a is provided between 6a and 6b to remove impurities contained in the fuel.

In addition, fuel supplied through the fuel pipe 3 but not used for the operation of the engine is circulated through the return pipe 8 to the fuel tank 1 and stored again. When the fuel is circulated through the return pipe 8, it is preferable that impurities are removed by the second filter 6b provided in the middle of the return pipe 8.

In addition, the regulator 9 is provided in the middle of the return pipe 8 to adjust the pressure, thereby facilitating the action of recirculating and storing the fuel into the fuel tank 1.

On the other hand, the fuel pipe 3 for supplying the fuel pumped from the fuel pump 2 to the engine and the return pipe 8 for reflowing the fuel returned from the engine are multi-valve provided on one side of the fuel tank 1. It is installed so as to pass through (10).

An example of the configuration of such a multi-valve is disclosed in Korean Patent Publication No. 08508502, which will be described below with reference to FIG. 2.

First, the conventional multi-valve 100 is composed of a disk-shaped housing plate 110 and a valve block 120 protruding integrally from the housing plate 110, the valve block 120 is a fuel pump As a result, a supply passage 142 for supplying the liquid fuel in the fuel tank 1 to the engine (not shown) and a return passage 144 for reintroducing the fuel returned from the engine into the fuel tank 1 are formed.

The supply passage 142 is a passage for feeding and supplying the liquid fuel in the fuel tank 1 to the engine at a predetermined pressure by a supply pipe 142a connecting to the fuel pump 2 (see FIG. 1). Some liquid fuel pumped to the engine is combusted in the combustion chamber of the engine as a mixer mixed with air. Then, the remaining liquid fuel that is not supplied to the combustion chamber of the engine is introduced into the fuel tank 1 through the return passage 144 through a regulator (not shown) and stored.

That is, the fuel reflowed into the fuel tank 1 through the return flow path 144 of the multi-valve 100 is radially scattered like a thin water stream to change the gaseous fuel contained in the fuel to make the fuel tank 1 To be mixed with the liquid fuel in the fuel cell, or the dispersed gaseous fuel floats in the air in the fuel tank 1 and is phase-changed or settles to the surface of the liquid fuel and mixed with the liquid fuel in the fuel tank 1. do.

In the figure, the supply pipe 142a is coupled to the housing plate 110 by a clip 142b.

On the other hand, the lower surface of the housing plate 110 is provided with a return valve 200, relief valve 150 and E.F valve 170.

Here, the return valve 200 is a component that smoothly reintroduces the circulated fuel into the fuel tank 1.

In addition, the relief valve 150 is a component that is opened when the fuel remaining in the supply pipe 140 at the initial stage of the engine stop is heated by the engine heat and a pressure higher than the supply pressure of the fuel supplied to the engine is applied.

The E.F valve 170 is a component for preventing backflow into the fuel tank 1 and preventing excessive flow of fuel when the vehicle is stopped or parked for a long time (when the engine is stopped).

The E.F valve 170 and the relief valve 150, etc. are generally known and may be purchased in the market and coupled to the holes formed in the housing plate 110. In this configuration, fuel remains in the supply pipe, so that a quick start can be made when the vehicle is restarted.

However, according to the conventional multi-valve, a valve block and a valve assembly such as a return valve, a relief valve, and an EF valve connected to the valve block are integrally formed in the housing plate, which requires a lot of labor during processing. There was a downside.

In addition, since the size of the housing plate with respect to the size of the valve assembly is conventionally fixed, it is difficult to reduce the overall size of the multi-valve.

In addition, according to the law that the valve block should be made of brass, the material of the housing plate should also be made of brass, which required a lot of cost.

The present invention has been made to solve the above-mentioned problems, the object of the invention is to provide a detachable housing plate and valve assembly constituting a multi-valve is a gas that can be easily processed, reducing the number of manufacturing and manufacturing costs It is to provide a valve-separated multi-valve for a fuel tank of a fuel vehicle.

In order to achieve the above object, a multi-valve for a fuel tank of a gas fuel vehicle according to the present invention is a valve block, flow paths formed inside the valve block, the EF valve connected to the flow paths to control the flow of fuel, A valve assembly including a relief valve and a return valve, and a housing plate, characterized in that the housing plate and the valve assembly are detachably installed.

Here, the installation plate is formed in the housing plate, the lower end of the valve block is characterized in that the coupling protrusion for coupling to the installation hole is formed.

In addition, the EF valve, the relief valve and the return valve is installed at the lower end of the coupling protrusion of the valve block, when the EF valve, the relief valve and the return valve is coupled to the housing plate is characterized in that disposed in the installation hole. .

The flow path may include a supply flow path and a return flow path, and the cut flow path may be provided with a cut solenoid valve.

In addition, the vent part may be detachably coupled to the housing plate.

In addition, the valve block may be made of brass and the housing plate may be made of steel.

Hereinafter, with reference to the accompanying Figures 3 to 7 will be described in detail a preferred embodiment of the present invention.

As shown, the multi-valve 100 according to the embodiment of the present invention, a disk-shaped housing plate 110 and the valve assembly 400 is detachably installed with the housing plate 110.

In the drawing, the valve assembly 400 is connected to the valve block 120 formed on the housing plate, flow paths 142 and 144 formed inside the valve block 120, and the flow paths. It includes a return valve 200, a relief valve 150 and the EF valve 170 for regulating the flow of fuel.

Specifically, the valve block 120 has a supply passage 142 for supplying the liquid fuel in the fuel tank 1 (see FIG. 1) to the engine (not shown) by the fuel pump, and the fuel returned from the engine to the fuel tank. A return passage 144 is formed to reintroduce into (1).

Here, the detachment is freely coupled between the housing plate 110 and the valve block 120 by a bolt 190 operated by a wrench or the like.

In this case, as shown in Figure 4, the housing plate 110 is provided with an installation hole (110a) is a part of the valve assembly 400 is fitted in close contact with the installation hole (110a).

In particular, the valve block 120 is formed with a coupling protrusion 121 to be fitted into the installation hole 110a, the lower end of the coupling protrusion 121, return valve 200, relief valve 150 and The EF valve 170 is provided. Accordingly, as shown in FIG. 5, when the valve block 120 is coupled to the housing plate 110, the return valve 200, the relief valve 150, and the EF valve 170 are installed in the installation hole ( Disposed within 110a).

In addition, the supply passage 142 is a passage for feeding and supplying the liquid fuel in the fuel tank 1 to the engine at a predetermined pressure by a supply pipe 142a connecting with the fuel pump 2 (see FIG. 1). As a result, some of the liquid fuel pumped to the engine is combusted in the combustion chamber of the engine as a mixer mixed with air.

Here, the cut solenoid valve 142c is installed in the supply passage 142 of the separated valve block 120.

Then, the remaining liquid fuel that is not supplied to the combustion chamber of the engine passes through a regulator (not shown) and flows into the fuel tank 1 through the return passage 144 and is stored. That is, the fuel reflowed into the fuel tank 1 through the return flow path 144 of the multi-valve 100 is radially scattered like a thin water stream to change the gaseous fuel contained in the fuel to make the fuel tank 1 To be mixed with the liquid fuel in the fuel cell, or the dispersed gaseous fuel floats in the air in the fuel tank 1 and is phase-changed or settles to the surface of the liquid fuel and mixed with the liquid fuel in the fuel tank 1. do.

Meanwhile, a return valve 200, a relief valve 150, and an E.F valve 170 connected to the flow paths 142 and 144 of the valve block 120 are installed on the bottom surface of the housing plate 110.

Here, the return valve 200 is a component that smoothly reintroduces the circulated fuel into the fuel tank 1.

In addition, the relief valve 150 is a component that is opened when the fuel remaining in the supply pipe 140 at the initial stage of the engine stop is heated by the engine heat and a pressure higher than the supply pressure of the fuel supplied to the engine is applied.

The E.F valve 170 is a component for preventing backflow into the fuel tank 1 and preventing excessive flow of fuel when the vehicle is stopped or parked for a long time (when the engine is stopped).

The E.F valve 170 and the relief valve 150 are generally known and may be purchased in the market and coupled to the holes formed in the housing plate 110. In this configuration, fuel remains in the supply pipe, so that a quick start can be made when the vehicle is restarted.

In addition, the valve block 120 may be made of brass and the housing plate 110 may be made of steel. In this way, a reduction in manufacturing cost due to the reduction of the material cost is obtained.

In addition, the vent part 180 is detachably coupled to the housing plate 110.

In particular, the housing plate 110 and the vent unit 180 is preferably detachably coupled by the bolt 190. Accordingly, it is possible to easily separate or combine between the housing plate 110 and the vent unit 180 using a wrench or the like.

The vent part 180 is a component that discharges a part of the outside when an excessive pressure due to gas (oil vapor) in the fuel tank 1 is applied, protrudes upward on the housing plate 110. The vent hole 181 is formed at the upper end.

Unspecified designation 128 is a manual valve.

8 and 9, the vent part 180 may be omitted from the housing plate 110 according to the object of use.

Since the rest of the configuration is the same as the above-described embodiment, duplicated description will be omitted.

According to the present invention having the configuration as described above, since the valve assembly is detachably installed to the housing plate, there is an advantage that the processing of the multi-valve is easy and the manufacturing labor is reduced.

In addition, according to the present invention, the vent portion can be detachably installed on the housing plate, so that the processing of the multi-valve is easy.

In addition, according to the present invention, it is possible to facilitate the processing of the multi-valve by installing a cut-solenoid valve in the supply passage of the separated valve block.

In addition, according to the present invention, since the material of the housing plate and the valve block can be different, the manufacturing cost can be greatly reduced.

In addition, according to the present invention, since the housing plate and the valve assembly are detachable, when the number of parts in the valve assembly is reduced, the size of the valve assembly may be reduced and the housing plate may be reduced accordingly, thereby reducing the cost. .

Claims (6)

A fuel tank of a gas fuel vehicle including a valve block, flow paths formed inside the valve block, an valve assembly including an EF valve, a relief valve, and a return valve connected to the flow paths to regulate fuel flow, and a housing plate. In the multi-valve for A valve separate type multi-valve for a fuel tank of a gas fuel vehicle, wherein the housing plate and the valve assembly are detachably installed. The method of claim 1, An installation hole is formed in the housing plate, and a lower end of the valve block has a coupling protrusion for engaging with the installation hole. The method of claim 2, The EF valve, the relief valve and the return valve are installed at the lower end of the coupling protrusion of the valve block, so that the EF valve, the relief valve and the return valve are disposed in the installation hole when engaging the housing plate. Separate valve multi-valve for fuel tank of vehicle. The method of claim 3, The flow passage includes a supply passage and a return passage, and the supply passage is a multi-valve for a fuel tank of a gas fuel vehicle, characterized in that the cut-solenoid valve is installed. The method of claim 3, And a vent part is detachably coupled to the housing plate. The method according to any one of claims 1 to 5, The valve block is made of brass and the housing plate is a multi-valve for a fuel tank of a gas fuel vehicle, characterized in that consisting of steel.

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