KR101907886B1 - Receptacle for fuel cell electric vehicle - Google Patents

Abstract

The present invention relates to a receptacle for a hydrogen fuel cell vehicle that can minimize a contact area with a charging nozzle and can be easily removed even if icing occurs during fuel charging. The receptacle for a hydrogen fuel cell vehicle includes a first body and a second body coupled to a fuel nozzle and coupled to each other to charge the fuel; a filter unit installed inside the first body to filter the fuel to remove foreign substances; and a valve unit installed inside the second body to prevent back flow of fuel to be charged, wherein the first body is formed in a cylindrical shape, and a plurality of planar portions are formed on the outer circumferential surface of the first body so as to reduce an area of contact with the filling nozzle in an intermediate portion coupled to the inside of the filling nozzle when the fuel is filled. Thus, even when icing due to the line-Thomson effect occurs during fuel charging, the receptacle can be easily removed from the filling nozzle.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a receptacle for a hydrogen fuel cell vehicle,

The present invention relates to a receptacle for a hydrogen fuel cell vehicle, and more particularly, to a receptacle for a hydrogen fuel cell vehicle in which a fuel is filtered and fed to a fuel tank in a fuel cell vehicle.

Generally, a Fuel Cell Electric Vehicle (FCEV) generates electricity by electrochemically using oxygen and hydrogen in a stack to convert the chemical energy of the fuel directly into electrical energy and use it as a power source.

Such a hydrogen fuel cell vehicle is an ideal technology in which fuel and air can be supplied from the outside and can be continuously generated regardless of the capacity of the battery, so that the efficiency is high and the pollutant is hardly discharged.

A hydrogen fuel cell vehicle supplies hydrogen fuel to the stack via a high-pressure regulator and a low-pressure regulator in a fuel tank, and the hydrogen blower includes a pump and various valves connected to a low-pressure regulator.

At the same time, the hydrogen fuel cell vehicle is equipped with a rapid sea ice water tank, an all animal pump, a thermostat, a stack cooling radiator, an air conditioner condenser, an electric refrigerant compressor, a water tank, a humidifier, a drive motor, .

The fuel supply system of the hydrogen fuel cell vehicle corresponds to the engine of a general gasoline and diesel vehicle, and is located at the upper side of the vehicle.

For example, the present applicant has filed a patent application for a fuel supply system of a hydrogen fuel cell vehicle, a regulator, and a control technique thereof, in many of the following Patent Documents 1 to 4 and the like.

Thus, the hydrogen fuel cell vehicle is equipped with one or more hydrogen tanks that withstand high pressure hydrogen gas pressure as it handles high pressure hydrogen of about 350 to 700 bar.

The hydrogen gas filling system for the hydrogen tank measures the pressure through a pressure sensor included in the buffer tank of the hydrogen gas filling station and the hydrogen tank of the hydrogen fuel cell vehicle. When the measured pressure reaches the target pressure, Hydrogen filling receptacle (Receptacle) is used as a kind of connector for connecting the buffer tank and the hydrogen tank to each other when the hydrogen gas is charged.

Receptacles are only used on a one-time basis during charging, while the confidentiality and noise sectors during charging are classified as very important quality items.

The airtightness section adopts a cylindrical O-ring seal structure to prevent the gas injected from the filling nozzle from leaking out, and the receptacle housing such as O-ring material and dimensions is manufactured based on the SAE J2600 standard.

Patent Document 1) Korean Patent Korean Patent Registration No. 10-1134645 (issued on April 9, 2012) Korea Patent Registration No. 10-1134647 (Announcement on April 19, 2012) Korean Patent Registration No. 10-0946204 (published on Mar. 8, 2010) Korean Patent Registration No. 10-1072361 (issued on October 12, 2011)

However, the prior art hydrogen fuel cell vehicle receptacle has a problem in that an amount of fluid is introduced due to the open structure of the gas entry portion.

The conventional hydrogen fuel cell vehicle receptacle has a problem in that noise is generated during charging due to increase in turbulent energy due to the shape of protrusions at the rear end of the valve.

In addition, the conventional receptacle for a hydrogen fuel cell vehicle has a problem in that a high-frequency airflow noise and a differential pressure are generated through a gap between the components by opening the check valve at the time of charging.

On the other hand, a housing which is unsatisfactory to the SAE J2600 standard causes a fatal defect such as a failure to bond with the filling nozzle and an external leak when hydrogen is charged.

Especially, as the high-pressure hydrogen gas is supplied and filled within a few minutes at a high flow rate of 60 g / sec at maximum, an icing phenomenon occurs due to the Row-Thomson effect, which takes the outside temperature of the entire receptacle including the filling nozzle and the high-

Here, the clearance between the receptacle housing and the filling nozzle is very precise, which may cause a problem that the filling nozzle is not detached due to freezing due to icing.

If the operator applies a strong external force to remove the charging nozzle in the state where the icing occurs, the charging nozzle may bend or damage the receptacle. Therefore, the contact area between the charging nozzle and the receptacle housing is minimized to prevent icing The development of the technology that is required is required.

SUMMARY OF THE INVENTION An object of the present invention is to provide a receptacle for a hydrogen fuel cell vehicle, which can improve the low-temperature hermetic performance and prevent the flow rate.

It is another object of the present invention to provide a receptacle for a hydrogen fuel cell vehicle which can reduce charge noise by dispersing a flow rate during charging to minimize airflow noise.

It is still another object of the present invention to provide a receptacle for a hydrogen fuel cell vehicle that prevents damage to the filter portion and foreign matter inflow due to pressure alternation during fuel filling.

It is still another object of the present invention to provide a receptacle for a hydrogen fuel cell vehicle in which contact area with the filling nozzle is minimized so that even if icing occurs during charging, it can be easily removed.

In order to accomplish the above object, a receptacle for a hydrogen fuel cell vehicle according to the present invention includes a first body and a second body which are coupled to each other and are connected to a filling nozzle for supplying fuel, And a valve unit installed inside the second body and preventing back flow of the fuel to be charged, wherein the first body is formed in a cylindrical shape, A plurality of planar portions are formed on an outer circumferential surface of the body so as to reduce an area of contact with the charging nozzle in an intermediate portion which is coupled to the inside of the charging nozzle when the fuel is charged.

The plurality of planar portions may be formed in the process of manufacturing the first body, or may be planarized by grinding after the molding operation is completed.

And the number of the flat portions is changed so as to form a polygonal cross section on the basis of the number of the processing holes.

And the plurality of flat portions are provided as a tool access path to which the tool is attached when fastened to the second body.

A large diameter portion formed to have a larger diameter than the upper and middle portions of the first body is provided on the outer peripheral surface of the first body and a product identification mark is marked on the outer peripheral surface of the large diameter portion.

As described above, according to the receptacle for a hydrogen fuel cell vehicle according to the present invention, a plurality of flat portions are formed on the outer circumferential surface of the central portion of the first body coupled to the inside of the filling nozzle when the fuel is filled, thereby reducing the contact area between the first body and the filling nozzle So that the receptacle can be easily removed from the charging nozzle even if icing due to the line-thomson effect occurs.

Thus, according to the present invention, it is possible to prevent the filling nozzle from being deformed or damaged due to the charging nozzle and the first body being iced when detaching the filling nozzle after filling the fuel.

According to the present invention, it is possible to utilize a plurality of planar portions formed on the first body as a tool entry portion that can be mounted using a tool when the first body and the second body are coupled.

According to the present invention, since a plurality of planar portions are formed in the central portion of the first body, the entirety of the outer peripheral surface of the large-diameter portion formed at the lower end of the first body is used so that the upper end of the second body is engaged therein. It is possible to obtain the effect of being represented.

In addition, according to the present invention, by applying the closed structure to the upper end of the cylindrical member of the valve portion, it is possible to disperse the overflow amount of the supplied fuel and to increase the channel width, The effect of reducing the turbulent kinetic energy is obtained.

Thus, according to the present invention, it is possible to effectively reduce the turbulent kinetic energy and the charging noise due to air flow noise in the process of filling the fuel using the receptacle.

According to the present invention, it is possible to minimize the movement and deformation of the second ring due to the filling pressure by providing backup rings on the upper and lower portions of the second ring sealing the filling nozzle when filling the relatively high-pressure fuel, Is obtained.

Further, according to the present invention, since the contact surfaces of the respective backup rings contacting the second ring are formed in a concave curved surface, the second ring and the backup ring are brought into close contact with each other to be completely sealed, , The airtightness performance can be improved, and safety accidents due to fuel leakage can be prevented in advance.

According to the present invention, a sintered filter obtained by compressing and sintering a plurality of wire mesh meshes at a high temperature is applied, and the cap and the boss are coupled to the upper and lower portions of the sintered filter, It is possible to prevent defects of each component due to foreign substances by preventing completely foreign substances from flowing into the receptacle.

1 is a perspective view of a receptacle for a hydrogen fuel cell vehicle according to a preferred embodiment of the present invention,
Fig. 2 is an exploded perspective view of the receptacle for a hydrogen fuel cell vehicle shown in Fig. 1,
3 is a sectional view taken along the line A-A 'shown in Fig. 1,
FIG. 4 is a graph showing the measured applied pressure and turbulent kinetic energy during fuel charging,
5 is an enlarged perspective view of the filter unit,
6 is a cross-sectional view of the filter portion shown in Fig. 5,
7 is a cross-sectional view of a filter portion applied to a receptacle for a hydrogen fuel cell vehicle according to another embodiment of the present invention,
8 is a front view of a first body applied to a receptacle for a hydrogen fuel cell vehicle according to another embodiment of the present invention;
9 is a view illustrating a combined operation of the first body and the filling nozzle.

Hereinafter, a receptacle for a hydrogen fuel cell vehicle according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a hydrogen fuel cell vehicle receptacle according to a preferred embodiment of the present invention, FIG. 2 is an exploded perspective view of the receptacle for a hydrogen fuel cell vehicle shown in FIG. 1, Fig.

Hereinafter, terms indicating directions such as 'left', 'right', 'forward', 'rearward', 'upward' and 'downward' are defined as indicating respective directions based on the states shown in the respective drawings do.

In this embodiment, a receptacle for a hydrogen fuel cell vehicle will be described.

However, it should be noted that the present invention is not necessarily limited to this, and may be applied to various gas vehicles that charge high-pressure gaseous fuel.

1 to 3, a receptacle 10 for a hydrogen fuel cell vehicle according to a preferred embodiment of the present invention includes a fuel injector 10, which is coupled to a fuel injector (not shown) A filter unit 40 installed inside the first body 20, the second body 30 and the first body 20 for filtering fuel to remove foreign substances and a second body 30 installed inside the second body 30 And a valve portion 50 for preventing backflow of the fuel to be charged.

In addition, the receptacle 10 for a hydrogen fuel cell vehicle according to the preferred embodiment of the present invention may further include a fuel cap 60 coupled to an inlet side of the first body 10.

The first body 20 is formed in a substantially cylindrical shape having an upper surface and a lower surface opened. A movement path 21 through which fuel to be charged moves may be formed in the first body 20.

The fuel cap 60 is coupled to the outer circumferential surface of the upper end of the first body 20, and the fuel cap 60 is coupled to the outer circumferential surface of the upper end of the first body 20 .

The fuel cap 60 protects the upper end of the first body 20 into which the fuel flows and prevents foreign matter such as moisture, oil, dust, etc. from flowing into the first body 20.

The fuel cap 60 is formed in a cylindrical shape having an opened lower surface and may be connected to the fuel tank 60 using a tether 61 and a vehicle body (not shown) in order to prevent loss during charging.

The first ring 22 and the second ring 23 may be spaced apart from each other by a predetermined distance on the inner circumferential surface of the inlet 201 formed at the upper end of the first body 20,

Here, the first ring 22 functions to seal the first filling nozzle for filling the fuel at a pressure of about 350 bar, and the second ring 23 functions to seal the second filling nozzle for filling the fuel at a pressure of about 700 bar Sealing function.

To this end, the step portion 24 may be formed on the inner circumferential surface of the upper end of the first body 20 so as to correspond to the diameter of the second filling nozzle formed to have a diameter smaller than the diameter of the first filling nozzle.

A first installation groove 221 is formed at an upper portion of the stepped portion 24 and a second installation groove 221 is formed at a lower portion of the stepped portion 24. (231) may be formed.

On the other hand, first and second backup rings 25 and 26 may be provided on the upper and lower portions of the second ring 23 in the second installation groove 231, respectively.

The first and second backup rings 25 and 26 function to minimize the movement and deformation of the second ring 23 due to the filling pressure of the fuel when the high-pressure fuel is charged at about 700 bar, respectively.

Each of the first and second backup rings 25 and 26 may have a rectangular cross section.

The lower surface of the first backup ring 25 and the upper surface of the second backup ring 26, which are in contact with the second ring 23 in the first and second backup rings 25 and 26, respectively, And may be curved upwardly or downwardly to be in close contact with the ring 23.

Here, the first and second backup rings 25 and 26 may be made of a synthetic resin material having excellent low-temperature airtightness, tensile strength and elongation such as thermoplastic polyurethane (TPU).

As described above, according to the present invention, a backup ring is provided at the upper and lower portions of the second ring sealing the filling nozzle when the relatively high-pressure fuel is filled, so that the vertical movement and deformation of the second ring due to the filling pressure can be minimized have.

Further, according to the present invention, the contact surface of each backup ring in contact with the second ring is formed into a concave curved surface, so that the second ring and the backup ring can be brought into close contact with each other and sealed completely.

Accordingly, the present invention can completely prevent fuel leakage during fuel filling, improve airtight performance, and prevent safety accidents due to fuel leakage.

The upper end of the second body 30 is formed to have a diameter smaller than the lower end diameter of the first body 20 and the lower end of the second body 30 is formed into a substantially rectangular parallelepiped shape having an upper surface and a lower surface. As shown in Fig.

An installation space 31 in which the valve unit 50 is installed is formed in the second body 30 and a fuel is supplied to the lower end of the second body 30 by the opening operation of the valve unit 50 A supply passage 32 for supplying the fuel to the fuel tank may be formed.

An O-ring may be provided at the lower end of the second body 30 to seal a portion coupled to the fuel tank.

The configuration of the filter unit 40 will be described in detail below with reference to Figs. 5 and 6. Fig.

A sealing member 70 may be provided between the filter unit 40 and the valve unit 50.

The sealing member 70 is formed in a substantially cylindrical shape with an upper surface opened and a transmission passage 71 for transmitting the fuel filtered by the filter unit 40 to the valve unit 50 is formed on the lower surface of the sealing member 70 .

A flange portion 72 coupled between the lower end of the first body 20 and the upper end of the second body 30 may be formed on the upper end of the sealing member 70 along the outer circumferential surface.

3, the valve unit 50 includes a cylindrical member 51 provided in the installation space 31 of the second body 30, a cylinder member 51 provided in the cylindrical member 51 to be movable up and down, A valve body 52 for opening and closing the transfer passage 71 of the valve body 70 and a spring 53 provided inside the cylindrical member 51 and providing an elastic force to the valve body 52.

The cylindrical member 51 is formed in a substantially cylindrical shape with an open top surface and can be formed with a smaller outer diameter than the inner diameter of the installation space 31. [ A plurality of discharge holes 54 may be formed in the side surface of the cylindrical member 31 to discharge the fuel introduced into the cylindrical member 51 through the transfer passage 71 to the outside.

The fuel supplied to the inside of the cylindrical member 51 through the delivery passage 71 is discharged to the outside of the cylindrical member 51 through the discharge hole 54 and the second body 30 to the supply passage 32 formed in the lower portion of the second body 30.

The valve body 52 is normally lifted by the elastic force of the spring 53 to close the lower end of the delivery passage 71. When the pressure transmitted through the delivery passage 71 rises, So that the transfer passage 71 is opened.

To this end, the upper surface of the valve body 52 may be formed into a curved surface convex upward so that the lower end of the transfer passage 71 can be closed.

As described above, according to the present invention, since the closed structure is applied to the upper end of the cylindrical member of the valve portion, the flow rate of the supplied fuel is dispersed and the channel width is increased to reduce the flow velocity, To reduce the turbulent kinetic energy.

Accordingly, the present invention can effectively reduce the turbulent kinetic energy and the charge noise due to the airflow noise in the course of charging the fuel using the receptacle.

FIG. 4 is a graph showing applied pressure and turbulent kinetic energy at the time of fuel charging, and Table 1 is the applied pressure and turbulent kinetic energy table shown in FIG.

Applied pressure (bar) Average turbulence kinetic energy (J / kg) 100 2803 200 1039 300 507

As shown in FIG. 4 and Table 1, as the charged amount of the fuel increases and the applied pressure becomes larger, the flow velocity in the receptacle 10 decreases and the turbulent kinetic energy decreases significantly.

Accordingly, the present invention can reduce charging noise by minimizing turbulent kinetic energy and airflow noise by dispersing the overflow amount of the fuel and reducing the flow rate in the receptacle.

Next, the configuration of the filter unit will be described in detail with reference to Figs. 3, 5, and 6. Fig.

Fig. 5 is an enlarged perspective view of the filter portion, and Fig. 6 is a cross-sectional view of the filter portion shown in Fig.

As shown in Figs. 3, 5 and 6, the filter unit 40 includes a sintered filter 41, which is made of a plurality of wire mesh meshes having different pores and is made into a cylindrical shape and filters the charged fuel, A protector 42 provided inside the sintering filter 41 and a cap 43 connected to the upper ends of the sintering filter 41 and the protector 42 and a sinter filter 41 and a protector 42, And a boss 44 in which a delivery passage 45 for delivering the filtered fuel to the valve unit 50 is formed.

For example, the sintered filter 41 may be formed by overlapping two protective meshes having a pore size of about 10 microns, a pore size of about 0.1 to 10 mm and a thickness of about 1 to 2 mm, To obtain a sintered mesh filter having a uniform pore size of about 10 mu m and a thickness of about 1.3 mm.

The sintered filter 41 produced by superposing a plurality of mesh meshes at a high temperature and compression-sintering is excellent in porosity and filtration efficiency, and has heat resistance, corrosion resistance, and excellent strength and durability.

Of course, the present invention can be modified to apply a sintered powder filter that is easy to manufacture, simple, and inexpensive, instead of a sintered mesh filter.

However, since the sintered powder filter has a problem in that chemical bonding between powders occurs due to the manufacturing process mechanism, it is difficult to make the desired pore uniform, and since the powder has a loose shape, a part of the powder that is rolled up due to the filling pressure of the fuel, have.

On the other hand, the sintered mesh filter is not broken or broken by its nature and can maintain the overall rigidity even if partial deformation occurs.

Therefore, according to the present invention, by applying a sintered mesh filter manufactured by superimposing a plurality of mesh meshes manufactured at predetermined pore sizes and compression-sintering at a high temperature, the pore size distribution is small and the stiffness of the filter according to the fuel filling environment can be satisfied .

It should be noted that the present invention can variously change the number of meshes, the pore size and the thickness of each mesh depending on the characteristics of the fuel to be charged and the pressure.

The protector 42 is provided inside the sintering filter 41 to prevent deformation of the sintering filter 41 under high pressure conditions.

This protector 42 is made to have a thickness of about 1 mm and can be manufactured to have a pore size of about 5 mm so that the fuel filtered by the sintered filter 41 can be smoothly supplied to the valve portion 50.

Here, the sintered filter 41 may be manufactured by molding a rectangular plate into a cylindrical shape, and then joining both ends by a welding method such as laser welding.

The cap 43 functions as a stopper to move the fuel supplied through the movement path 21 of the first body 20 while being filtered from the outside of the sintered filter 41 to the inside.

For this purpose, the cap 43 is formed in a conical shape that is convex toward the top and downward toward the outside in order to minimize fluid resistance when the fuel is moved. A protector 42 is provided on the lower surface of the cap 43, The insertion portion 46 may be formed to protrude.

Of course, the shape of the cap 43 is not limited to this, and may be changed into various shapes such as hemispherical shape convex upward, semi-elliptical shape, and the like.

The boss 44 is formed in a substantially cylindrical shape with an upper surface and a lower surface opened. An engaging portion 47, which is coupled to the inside of the protector 42, may protrude from the upper surface of the boss 44.

The upper end of the boss 44 may be formed to have a larger diameter than the outer diameter of the sintered filter 41 so that the lower end of the sintered filter 41 is seated.

The cap 43 and the boss 44 are each manufactured by a machining method and the sintered filter 41 is attached between the cap 43 and the boss 44 in a welding manner such as laser welding, And the bosses 44, respectively.

In the present embodiment, the sintering filter 41, the cap 43 and the boss 44 are fixed by welding, but the present invention is not limited thereto.

For example, FIG. 7 is a cross-sectional view of a filter portion applied to a receptacle for a hydrogen fuel cell vehicle according to another embodiment of the present invention.

7, the filter portion 40 applied to the receptacle 10 for a hydrogen fuel cell vehicle according to another embodiment of the present invention is similar to that shown in Fig. 6, First and second insertion grooves 48 and 49 into which upper and lower ends of the sinter filter 41 and the protector 42 are inserted are formed on the upper surfaces of the sintered filter 41 and the boss 44, 43 and the bosses 44 may be fixed to each other by an adhesive method using an adhesive such as epoxy.

As described above, according to the present invention, a sintered filter obtained by compressing and sintering a plurality of mesh meshes at a high temperature is applied and the cap and the boss are respectively coupled to the upper and lower portions of the sintered filter. It is possible to prevent breakage.

Accordingly, the present invention completely prevents foreign matter from entering the interior of the re- duction turret, thereby preventing defects of each component due to foreign matter.

On the other hand, each component of the filter unit 40 is made of a stainless steel material such as SUS316L to cope with hydrogen embrittlement and can be manufactured by adjusting the Ni (Ni) content to about 7 to 15% have.

2, the first body 20 is formed with an outer circumferential surface of the first body 20, which is formed on the inner circumferential surface of the filling nozzle (not shown) The first body 20 has a larger diameter than the upper and middle portions of the first body 20 so that the upper end of the second body 30 is coupled to the lower portion of the first body 20. [ A large diameter portion 28 having a large diameter can be provided.

The large-diameter portion 28 may be provided with a pair of planar portions 281 that are planarized at mutually symmetrical positions so as to function as a tool entrance portion for attaching the tool to the second body 30 when fastened.

As the high-pressure hydrogen gas is supplied and charged within a few minutes at a high flow rate of 60 g / sec at maximum, an icing phenomenon occurs due to the joule-Thomson effect, which takes the outside temperature of the entire receptacle including the filling nozzle and the high-

As such, since the first body 20 is formed in a cylindrical shape, icing may occur between the first body 20 and the filling nozzle in the process of filling the fuel with the filling nozzle.

That is, when the first body 20 is formed into a cylindrical shape, the distance between the inner peripheral surface of the charging nozzle and the outer peripheral surface of the first body 20 is about 50 to 100 탆.

When the distance between the inner circumferential surface of the charging nozzle and the outer circumferential surface of the first body 20 is very small, it becomes difficult to detach the charging nozzle from the receptacle 10 if the icing occurs during the fuel filling process.

When the flat surface portion 281 is formed on one side of the large diameter portion 28, the identification marking is interrupted as the space for marking the product identification mark such as the bar code becomes insufficient.

In order to solve this problem, the present invention can be modified so as to provide a plurality of flat portions at the center of the first body 20 inserted into the filling nozzle.

FIG. 8 is a front view of a first body applied to a receptacle for a hydrogen fuel cell vehicle according to another embodiment of the present invention, and FIG. 9 is a view illustrating a combining operation of a first body and a filling nozzle.

FIG. 9A shows a state where the first body and the filling nozzle are separated, and FIG. 9B shows a state where the first body and the filling nozzle are coupled.

As shown in FIGS. 8 and 9, the first body 20, which is applied to the receptacle for a hydrogen fuel cell vehicle according to another embodiment of the present invention, has a plurality of planes And a space is formed between the inner circumferential surface of the filling nozzle 80 and the outer circumferential surface of the first body 20. [

The plurality of planar portions 29 may be formed during the manufacturing process of the first body 20 or may be planarized by a grinding operation after the molding operation is completed.

The number of the planar portions 29 may be changed so that the cross section of the planar portion 29 has a polygonal shape such as a triangular, square, hexagonal, or octagonal shape.

A space of about 2000 mu m may be formed between the plurality of flat surfaces 29 formed in the first body 20 and the inner peripheral surface of the filling nozzle 80. [

As described above, according to the present invention, by forming a plurality of planar portions on the outer peripheral surface of the central portion of the first body, the contact area between the first body and the filling nozzle is reduced as shown in Figs. 9A and 9B, The receptacle can be easily removed from the charging nozzle even if icing due to the throat-Thomson effect occurs.

Accordingly, the present invention can prevent deformation and damage of the filling nozzle due to the filling nozzle and the icing of the first body when the filling nozzle is detached after filling the fuel.

Further, the present invention can be utilized as a tool entry portion that can mount a plurality of flat portions formed on the first body by using a tool when the first body and the second body are coupled.

In the present embodiment, a plurality of planar portions 29 are formed at the center of the first body 20, so that the planar portion 281 of the large-diameter portion 28 described in the above- Can be removed.

Accordingly, in the present invention, the product identification mark can be indicated by utilizing the entire outer peripheral surface of the large diameter portion provided under the first body.

Although the invention made by the present inventors has been described concretely with reference to the above embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

The present invention is applied to a hydrogen fuel cell vehicle receptacle technique which can be easily detached from a charging nozzle even if icing occurs in the process of filling the fuel.

10: Receptacle for hydrogen fuel cell vehicle
20: first body 201: inlet
21: moving flow path 22, 23: first and second rings
221, 231: first and second mounting grooves 24:
25, 26: first and second backup rings 27:
28: large-diameter portion 281, 29:
30: second body 31: installation space
32: supply passage 40: filter section
41: sintering filter 42: protector
43: cap 44: boss
45: Delivery channel 46:
47: engaging portion 48, 49: first and second insertion grooves
50: valve portion 51: cylindrical member
52: valve body 53: spring
54: exhaust hole 60: fuel cap
61: tether 70: sealing member
71: transfer passage 72: flange portion
80: Charging nozzle

Claims (5)

A first body and a second body that are coupled to each other and combined with a filling nozzle for supplying fuel to fill the fuel,
A filter unit installed inside the first body and filtering the fuel to remove foreign substances;
And a valve unit installed in the second body and preventing back flow of fuel to be charged,
The first body is formed in a cylindrical shape,
Wherein the outer surface of the first body is provided with a plurality of planar portions and a plurality of planar portions so as to reduce an area of contact with the filling nozzle,
A large diameter portion formed with a larger diameter than the upper and middle portions of the first body is provided,
Wherein the number of the planar portions is changed so as to have a polygonal cross-section based on the number of the processing holes,
The second body is utilized as a tool access path to which the tool is attached when fastened to the second body,
And a product identification mark is marked on an outer circumferential surface of the large diameter portion. delete delete delete delete

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