KR20240039682A - filter apparatus for hydrogen refueling station - Google Patents

Abstract

In order to improve sealing performance and safety of use, the present invention has an inflow passage and an discharge passage formed on one side and the other side, an adapter insertion hole through which the inflow passage communicates in the lower center, and an upper filter insertion hole through which the end of the discharge passage communicates. The upper housing portion is formed in a stepped manner; an adapter portion whose outer surface is screwed to the adapter insertion hole and through which a guide passage is formed in the vertical direction, with a cross-sectional area of the upper end communicating with the inflow passage being set to be less than the cross-sectional area of the lower end; a coalescer filter unit whose upper end is coupled to the lower end of the adapter unit, a filter passage whose upper end communicates with the lower end of the guide passage is formed through the outer portion, and whose side portion communicates with the discharge passage; A cap portion whose upper end is coupled to the lower end of the coalescer filter portion; And a fastening protrusion protrudes upward from the upper surface so as to be screwed to the inner periphery of the upper filter insertion hole, the upper surface of the outer border is in close contact with the lower surface of the outer border of the upper housing part, and the side part of the coalescer filter part is inserted into the center while being spaced apart from the inner wall surface. Provided is a filter device for a hydrogen charging station including a lower housing portion in which a lower filter insertion hole is formed.

Description

Filter apparatus for hydrogen refueling station

The present invention relates to a filter device for a hydrogen charging station, and more specifically, to a filter device for a hydrogen charging station with improved sealing performance and safety of use.

In general, filters can be used to filter liquids and fluids containing impurities. For example, filters are often used to remove moisture from liquid fuel to prevent damage to moisture-sensitive components such as fuel injection equipment.

Here, this filter is disposed in an accommodating space formed inside the housing part that is assembled in a prefabricated manner, and as the accommodating space communicates with the inflow passage and the discharge passage, the fluid flowing in from the inflow passage passes through the filter and is discharged into the discharge passage. It can be.

In addition, the housing part may be individually provided as an upper housing part and a lower housing part so that a filter can be inserted therein, and may be sealed and coupled to each other. At this time, when the upper housing part and the lower housing part are coupled to each other, the filter is disposed between the upper housing part and the lower housing part, and the receiving space communicating with the inflow passage and the discharge passage can be formed.

However, in the conventional filter, a gap is created between the upper housing part and the lower housing part surrounding the filter due to the pressure of the fluid flowing into the receiving space where the filter is disposed, and the fluid leaks through the gap, resulting in sealing. There was a problem with poor performance.

Korean Patent Publication No. 10-2020-0130338

In order to solve the above problems, the present invention aims to provide a filter device for hydrogen charging stations that improves sealing performance and safety of use.

In order to solve the above problem, the present invention has an inflow passage and an discharge passage formed on one side and the other side, an adapter insertion hole through which the inflow passage communicates, and an upper filter insertion hole through which the end of the discharge passage communicates at the lower center. An upper housing portion formed in a stepped manner; an adapter portion whose outer surface is screwed to the adapter insertion hole and through which a guide passage is formed in the vertical direction, with a cross-sectional area of the upper end communicating with the inflow passage being set to be less than the cross-sectional area of the lower end; a coalescer filter unit whose upper end is coupled to the lower end of the adapter unit, a filter passage whose upper end communicates with the lower end of the guide passage is formed through the outer portion, and whose side portion communicates with the discharge passage; A cap portion whose upper end is coupled to the lower end of the coalescer filter portion; And a fastening protrusion protrudes upward from the upper surface so as to be screwed to the inner periphery of the upper filter insertion hole, the upper surface of the outer border is in close contact with the lower surface of the outer border of the upper housing part, and the side part of the coalescer filter part is inserted into the center while being spaced apart from the inner wall surface. Provided is a filter device for a hydrogen charging station including a lower housing portion in which a lower filter insertion hole is formed.

Through the above solutions, the present invention provides the following effects.

First, the cross-sectional area of the upper end of the guide passage formed in the adapter unit communicating with the inflow passage is set to be less than the cross-sectional area of the lower end communicating with the filter passage of the coalescing filter unit, thereby relieving the high-pressure fluid pressure passing through the coalescing filter unit, thereby ensuring safety of use. This can be significantly improved.

Second, the guide passage is formed to slope outward in the radial direction toward the bottom, so that the lower end of the guide passage is connected to the top of the filter passage, so the coalescer filter unit with an increased surface area can be placed inside the filter device for the hydrogen charging station, thereby increasing the amount of fluid supplied per unit time. This can be significantly improved.

Third, when high-pressure fluid flows through a fix bar, the lower end is sealed and coupled to the sealing groove of the plug part and the upper end is coupled to the locking groove of the adapter part, and the upper outer surface of the filter fixing part extending from the outer periphery of the central side is supported against the lower surface of the cap part. Since the coalescer filter unit is firmly supported, the stability of use can be significantly improved.

Fourth, the lower metal gasket and upper metal gasket made of metal are plastically deformed and sealed between the lower sealing protrusion of the plug part and the lower sealing groove of the lower housing part, and between the upper sealing protrusion of the fastening protrusion and the upper sealing groove of the upper housing part, thereby generating high pressure. Since cracks caused by fluid are prevented in advance, sealing performance can be significantly improved.

1 is a cross-sectional view showing a filter device for a hydrogen charging station according to an embodiment of the present invention.
Figure 2 is an enlarged view of portion 'A' of Figure 1.
Figure 3 is an enlarged view of part 'B' of Figure 1.
Figure 4 is an exploded cross-sectional view showing a filter device for a hydrogen charging station according to an embodiment of the present invention.

Hereinafter, a filter device for a hydrogen charging station according to a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

FIG. 1 is a cross-sectional view showing a filter device for a hydrogen charging station according to an embodiment of the present invention, FIG. 2 is an enlarged view of portion 'A' of FIG. 1, FIG. 3 is an enlarged view of portion 'B' of FIG. 1, and FIG. 4 is an exploded cross-sectional view showing a filter device for a hydrogen charging station according to an embodiment of the present invention.

As shown in Figures 1 to 4, the filter device 100 for a hydrogen charging station according to an embodiment of the present invention includes an upper housing part 10, an adapter part 20, a coalescent filter part 30, and a cap part ( 40) and a lower housing portion 50.

Here, the upper housing portion 10 is formed with an inflow passage 11 and an discharge passage 12 on one side and the other side, and an upper filter insertion hole 13 through which the inflow passage 11 communicates is located at the center of the lower part. It is preferable that the adapter insertion holes 14 through which the ends of the discharge passage 12 communicate are formed to be stepped from each other.

In detail, the adapter insertion hole 14 communicates with the inflow passage 11 at the center of the lower surface of the upper housing portion 10 and has an inner diameter exceeding the inflow passage 11, and has a step difference from the inflow passage 11. can be formed.

In addition, the upper filter insertion hole 13 communicates with the adapter insertion hole 14 from the lower end of the adapter insertion hole 14 and has an inner diameter exceeding the adapter insertion hole 14. ) and can be formed in a stepped manner. That is, the upper filter insertion hole 13 is primarily formed through the lower surface of the upper housing portion 10, and the adapter insertion hole 14 is stepped from the ceiling surface of the upper filter insertion hole 13. The car can be formed through penetration.

At this time, it is preferable that the inlet end of the inflow passage 11 communicates with one side of the upper housing portion 10 and the discharge end communicates with the upper center side of the adapter insertion hole 14.

In addition, the discharge passage 12 preferably has an inlet end communicating with the other side of the upper housing part 10 and a discharge end communicating with the outer upper side of the upper filter insertion hole 13. At this time, it is preferable that the discharge end of the inflow passage 11 and the discharge end of the discharge passage 12 are spaced apart from each other.

Meanwhile, the adapter part 20 is a guide whose outer surface is screwed to the adapter insertion hole 14, penetrates the central part in the vertical direction, and whose upper cross-sectional area communicating with the inflow passage 11 is set to be less than the lower cross-sectional area. It is preferable that the flow path 23 is formed.

In detail, the adapter part 20 includes an extension body 21 that is provided in a cylindrical shape and extends in the vertical direction, and an extension body 22 that integrally extends radially outward along the circumferential direction from the bottom of the extension body 21. ) may include.

At this time, the height of the extension body 21 may be set to correspond to the height of the adapter insertion hole 14. Additionally, the outer edge of the upper surface of the extended body 22 may be in close contact with the step surface formed between the upper filter insertion hole 13 and the adapter insertion hole 14.

In addition, a first fastening screw thread (14a) is formed on the inner circumference of the adapter insertion hole 14, and a second fastening screw thread (21a) is formed on the outer circumference of the adapter part 20 to be fastened to the first fastening screw thread (14a). This formation is desirable. At this time, preferably, the second fastening thread (21a) may be formed on the outer periphery of the extended body (21). Accordingly, the adapter part 20 can be screwed to the inner periphery of the adapter insertion hole 14.

In addition, the lower end of the second guide passage (23b) included in the guide passage (23) has a radius so that the upper end of the coalescer filter portion (30) is fitted into the extended body (22) of the adapter portion (20). An expansion passage 22b may be formed that extends stepwise inward and outward. Moreover, a first washer 22c made of an elastic material interposed between the expansion passage 22b and the top of the coalescer filter unit 30 may be further provided. In addition, the extended body 22 of the adapter part 20 has a first filter insertion protrusion 22a integrally protruding downward from the lower surface to surround the upper outer circumference of the filter passage 32 of the coalescer filter part 30. It can be.

Additionally, the guide passage 23 may be formed to slope outward in the radial direction from the top to the bottom of the adapter unit 20.

In detail, the guide passage 23 communicates with a first guide passage 23a formed primarily through the upper and lower directions from the upper surface of the adapter unit 20, and the first guide passage 23a. It may include the second guide passage 23b that extends obliquely outward in the radial direction along the circumferential direction toward the bottom from the bottom of the passage 23a and is formed through secondary penetration.

At this time, the guide passage 23 may be formed in a circular cross-sectional shape penetrating in the vertical direction along the circumferential direction at a position spaced radially outward with respect to the radial center of the adapter portion 20. For example, the guide passage 23 may be formed in an annular cross-sectional shape with the upper end having a first diameter based on the upper center of the adapter part 20, and the lower end being based on the lower center of the adapter part 20. It may be formed into a circular cross-sectional shape having a second diameter exceeding the first diameter. At this time, the upper diameter of the first guide passage 23a may be set to the first diameter, and the lower diameter of the second guide passage 23b may be set to the second diameter.

Alternatively, the guide passage 23 may be provided in a plurality of places in the adapter unit 20 and formed through each of them in the vertical direction, and may be spaced apart from each other at uniform intervals based on the upper center of the adapter unit 20. You can. For example, the adapter unit 20 may be provided with four guide passages 23, spaced apart at even intervals based on the upper center of the adapter unit 20, and each may be formed through the vertical direction.

Meanwhile, the coalescer filter unit 30 is disposed radially inside the lower filter insertion hole 53, which will be described later, disposed radially inside the upper filter insertion hole 13, and the adapter unit 20 It is preferable that the upper end is fitted and coupled to the lower end.

At this time, it is preferable that the side portion of the coalescer filter unit 30 is spaced apart from the inner wall of the lower filter insertion hole 53 so as to communicate with the discharge passage 12 via the upper filter insertion hole 13. .

In addition, it is preferable that a filter passage 32 whose upper end communicates with the lower end of the guide passage 23 is formed through the coalescer filter unit 30.

For example, the coalescer filter unit 30 may have a through hole formed in the central part in the vertical direction, and an outer part may be divided with the through hole, and the upper end of the filter flow path communicates with the lower end of the guide flow path 23. (32) may be formed through. That is, the coalescing filter unit 30 may be provided as a filter with a ring-shaped cross section and arranged to surround the fix bar 70, which will be described later. At this time, when the coalescer filter unit 30 is provided as a filter with a ring-shaped cross-section, the cross-sectional shape of the filter passage 32 and the guide passage 23 may be formed in a circular shape, and the filter passage ( One side of the outer portion and the inner portion of the coalescer filter unit 30 may be connected to each other with 32) in between.

Alternatively, when the guide passage 23 is provided in multiple locations as described above, the coalescer filter unit 30 is individually provided in a number corresponding to the number of the guide passages 23, so that the fix bar 70 Centered at even intervals along the circumferential direction of the fix bar 70, the upper end of each filter passage 32 penetrating in the vertical direction in the center of each coalescing filter unit 30 is connected to each guide passage ( 23) can be connected. That is, when the adapter part 20 is provided with four guide passages 23, four coalescing filter parts 30 may be provided, and the four coalescing filter parts 30 may be The fix bar 70 may be arranged along the circumferential direction with a space for placement, with the fix bar 70 as the center. Through this, a plurality of the coalescer filter units 30 are provided in the form of a cartridge, and each filter passage 32 is connected in parallel to the inflow passage 11, thereby reducing pressure loss and securing a high flow rate and strength. possible.

In addition, the coalescer filter unit 30 is formed with a fine hole through which the fluid passes so that the fluid flowing into the inflow passage 11 passes through and moves to the discharge passage 12, and the outer side is the upper filter insertion hole ( 13) and the inside of the lower filter insertion hole 53, which will be described later. Additionally, the inside of the coalescer filter unit 30 may be in communication with the fix bar 70. The coalescer filter unit 30 can be constructed by mixing metal powder and metal fiber, and its strength can be improved by designing the mesh and sintered filter in a layered composite form.

Meanwhile, the cap part 40 has its upper end fitted into the lower end of the coalescer filter part 30, and is provided in a ring shape so that the central part can communicate with the through hole.

Here, a central hole 41 through which the fix bar 70 is inserted may be formed in the central portion of the cap portion 40 in the vertical direction. In addition, a filter insertion groove 42 may be formed downwardly recessed from the upper surface of the cap portion 40 so that the lower end of the coalescing filter portion 30 is fitted, and may be formed to surround the lower outer periphery of the filter passage 32. The second filter insertion protrusion 43 may integrally protrude upward from the upper surface. Moreover, a second washer 42a made of an elastic material interposed between the filter insertion groove 42 and the lower end of the coalescer filter unit 30 may be further provided.

Meanwhile, the lower housing portion 50 is preferably provided with a fastening protrusion 51 on the upper portion that protrudes upward to be screwed to the inner periphery of the upper filter insertion hole 13. Here, the fastening protrusion 51 may integrally protrude upward from the upper inner end of the lower housing portion 50. At this time, the height of the fastening protrusion 51 may be set to correspond to the height of the upper filter insertion hole 13.

Here, a third fastening screw thread (13a) is formed on the inner circumference of the upper filter insertion hole 13, and a fourth fastening screw thread (51a) is formed on the outer circumference of the fastening protrusion 51 to be fastened to the third fastening screw thread (13a). ) is preferably formed. Accordingly, the fastening protrusion 51 can be screwed to the inner circumference of the upper filter insertion hole 13.

In addition, it is preferable that the upper surface 52 of the outer edge of the lower housing part 50 is in close contact with the lower surface 15 of the outer edge of the upper housing part 10. Moreover, the upper housing portion 10 is provided with a diameter exceeding the lower housing portion 50, and a cover protrusion 16 may integrally protrude downward from the lower surface of the outer edge of the upper housing portion 10. .

At this time, the cover protrusion 16 may protrude downward along the circumferential direction of the upper housing part 10, and the inner circumference of the cover protrusion 16 is in surface contact with the outer circumference of the lower housing part 50 and is in close contact with it. It can be. Through this, the boundary area between the upper housing part 10 and the lower housing part 50 is brought into close contact, allowing fluid to move from the coalescer filter part 30 to the discharge passage 12 without leaking.

In addition, the lower housing portion 50 preferably has a lower filter insertion hole 53 formed on the upper central portion, which communicates with the upper filter insertion hole 13 and into which the coalescer filter portion 30 is inserted. At this time, the inner diameter of the upper filter insertion hole 13 may be set to exceed the inner diameter of the lower filter insertion hole 53, and the inner diameter of the upper filter insertion hole 13 and the lower filter insertion hole 53 It is desirable to understand that the inner side of includes the same area.

Additionally, the inner diameter of the lower filter insertion hole 53 may be set to exceed the outer diameter of the extended body 22, the outer diameter of the coalescer filter part 30, and the outer diameter of the cap part 40, respectively.

Accordingly, the fluid flowing into the inflow passage 11 may pass through the coalescer filter unit 30, pass through the lower filter insertion hole 53, and then move to the discharge passage 12. For this purpose, it is preferable that the side portion of the coalescer filter unit 30 is spaced apart from the inner wall surface of the lower filter insertion hole 53.

In addition, it is preferable that a plug coupling hole 54 whose upper end communicates stepwise with the lower filter insertion hole 53 is formed through the lower central portion of the lower housing portion 50 in the vertical direction.

In detail, between the lower filter insertion hole 53 and the plug coupling hole 54, there is a step hole 54a having an inner diameter less than the inner diameter of the lower filter insertion hole 53 and the inner diameter of the plug coupling hole 54. ) can be formed through the vertical direction. At this time, the upper end of the step hole 54a may communicate with the lower filter insertion hole 53 and the lower end may communicate with the plug coupling hole 54. Additionally, the lower filter insertion hole 53, the stepped hole 54a, and the plug engaging hole 54 may be formed to be stepped from each other.

Meanwhile, the filter device 100 for a hydrogen charging station according to an embodiment of the present invention further includes a plug portion 60, the fix bar 70, a lower metal gasket 80, and an upper metal gasket 90. desirable.

Here, it is preferable that the outer circumference of the plug portion 60 is screwed to the plug coupling hole 54. At this time, the upper diameter of the plug portion 60 may be set to correspond to the inner diameter of the plug coupling hole 54. Here, a plug insertion part that is fitted with the plug coupling hole 54 may be formed on the upper part of the plug part 60.

In addition, a fifth fastening screw thread (54c) is formed on the inner circumference of the plug coupling hole 54, and a sixth fastening screw thread (60a) is formed on the upper outer circumference of the plug portion 60 to be fastened to the fifth fastening screw thread (54c). ) is preferably formed. Accordingly, the upper part of the plug portion 60 may be screwed to the inner periphery of the plug coupling hole 54.

Furthermore, the lower housing portion 50 may be formed with a locking expansion hole 54d that extends stepwise outward in the radial direction along the circumferential direction at the bottom of the plug coupling hole 54. In addition, an expansion fitting portion 60c may be formed in the vertical central portion of the plug portion 60, extending stepwise outward in the radial direction along the circumference to a height corresponding to the engaging expansion hole 54d. Additionally, the height between the top of the expanded fitting portion 60c and the top of the plug portion 60 may be formed to correspond to the height of the plug coupling hole 54.

Additionally, a handle portion 60b extending downward from the inner end of the lower surface of the expansion type portion 60c may be formed at the lower portion of the plug portion 60. At this time, the handle portion 60b may be disposed to protrude downward from the lower surface of the housing portion 50. Accordingly, the user can grip the handle portion 60b to couple the plug portion 60 to the lower housing portion 50.

In addition, it is preferable that the plug portion 60 has a sealing groove portion 61 recessed downward from the upper surface. In addition, it is preferable that the locking groove 24 is formed to be recessed upward in the center of the lower surface of the adapter part 20.

In addition, the fix bar 70 extends in the vertical direction through the center side of the coalescer filter part 30 and the cap part 40, and the lower end is inserted into the sealing groove part 61 and sealed, It is preferable that the upper end extends to a length corresponding to the gap between the bottom surface of the sealing groove portion 61 and the ceiling surface of the locking groove portion 24 so that it is coupled to the locking groove portion 24.

In addition, the fix bar 70 preferably includes a filter fixing part 71 extending radially along the circumferential direction from the outer circumference of the central side corresponding to the lower side of the cap part 40. At this time, the filter fixing part 71 may be formed integrally with the fix bar 70, or may be provided separately and screwed to the outer periphery of the fix bar 70. At this time, the upper surface of the filter fixing part 71 is engaged with the lower surface of the cap part 40 and may function as a stopper that blocks the coalescer filter part 30 from moving downward.

That is, the upper outer surface of the filter fixing part 71 extending from the central outer periphery of the fix bar 70 is disposed to face the lower surface of the cap part 40, so that the filter fixing part 71 is connected to the cap part 40. can support.

In addition, an O-ring coupling groove (72a) may be formed to be recessed radially inward along the circumferential direction on the lower outer circumference of the fix bar 70 inserted into the sealing groove portion 61, and may be formed in a ring shape to form the O-ring coupling groove. An O-ring 72 made of an elastic material may be further provided at (72a) but whose outer circumference is sealed and coupled to the inner wall surface of the sealing groove portion 61.

In addition, a seventh fastening screw thread is formed on the inner circumference of the locking groove portion 24, and an eighth fastening screw thread is formed on the upper outer circumference of the fix bar 70 inserted into the locking groove portion 24 to be fastened to the seventh fastening screw thread. (70a) is preferably formed. Accordingly, the upper part of the fix bar 70 may be screwed to the adapter part 20.

Here, the upper part of the fix bar 70 is screwed to the adapter part 20, and the adapter part 20 is screwed to the upper housing part 10, and the upper housing part 10 is It is screwed to the lower housing part 50, and the plug part 60 is screwed to the lower housing part 50 while the lower part of the fix bar 70 is sealed and coupled to the plug part 60. You can. Therefore, even if the pressure inside the filter device 100 for a hydrogen charging station increases due to the fluid, the coupling state between each component of the filter device 100 for a hydrogen charging station can be stably maintained.

Meanwhile, on the upper surface of the fastening protrusion 51, an upper sealing protrusion 56 protrudes upward along the circumferential direction, and the upper sealing protrusion 56 is sealingly coupled to the upper housing portion 10 ( It is preferable that the upper sealing groove 17 is formed to be recessed upward along the circumferential direction from the outer surface of the upper filter insertion hole 13 opposite to 56).

At this time, the upper sealing protrusion 56 and the upper sealing groove 17 are formed in contours that match each other, and may be rounded and protruded and recessed, respectively.

In addition, the upper metal gasket 90 is preferably provided in a ring shape so that it is plastically deformed and comes into close contact between the upper sealing protrusion 56 and the upper sealing groove 17. At this time, the upper metal gasket 90 may be made of a metal material containing nickel.

Meanwhile, a lower sealing protrusion 62 protrudes upward along the circumferential direction on the outer surface of the plug portion 60, and the lower sealing protrusion 62 is coupled to the lower housing portion 50 in a sealing manner. It is preferable that the lower sealing groove 55 is formed to be recessed upward along the circumferential direction from the outer edge of the upper surface 54b of the plug coupling hole 54 opposite to (62).

At this time, the lower sealing protrusion 62 and the lower sealing groove 55 are formed in contours that match each other, and may be rounded and protruded and recessed, respectively.

In addition, the lower metal gasket 80 is preferably provided in a ring shape and is plastically deformed and closely interposed between the lower sealing protrusion 62 and the lower sealing groove 55. At this time, the lower metal gasket 80 may be made of a metal material containing nickel.

At this time, the upper metal gasket 90A and the lower metal gasket 80A, which are provided in a flat ring shape, are connected to the upper sealing protrusion 56, the upper sealing groove 17, the lower sealing protrusion 62, and the lower It may be plastically deformed corresponding to the shape of the sealing groove 55.

In this way, in the present invention, the cross-sectional area of the upper end of the guide passage 23 formed in the adapter portion 20 and communicating with the inlet passage 11 is connected to the filter passage 32 of the coalescer filter portion 30. Since the high-pressure fluid pressure passing through the coalescer filter unit 30 is set to be less than the cross-sectional area of the communicating lower end, the safety of use can be significantly improved.

In addition, the guide passage 23 is formed to be inclined radially outward toward the bottom, so that the lower end of the guide passage 23 is connected to the upper end of the filter passage 32, so that the coalescer filter unit has an increased surface area ( 30) can be placed inside the filter device 100 for the hydrogen charging station, so the amount of fluid supplied per unit time can be significantly improved.

In addition, the filter fixing part 71 has its lower end coupled to the sealing groove 61 of the plug part 60 and its upper end coupled to the locking groove 24 of the adapter part 20, extending from the outer periphery of the central side. Even when high-pressure fluid flows through the fix bar 70, the upper surface of which is supported by facing the lower surface of the cap part 40, the coalescer filter part 30 does not fall downward and is firmly supported, thereby ensuring stability in use. This can be significantly improved.

In addition, the lower metal gasket 80 and the upper metal gasket are formed between the lower sealing protrusion 62 and the lower sealing groove 55, and between the upper sealing protrusion 56 and the upper sealing groove 17. Since the metal gasket 90 is plastically deformed and sealed, cracks caused by high-pressure fluid are prevented in advance, and sealing performance can be significantly improved.

At this time, terms such as “include,” “comprise,” or “equipped” described above mean that the corresponding component may be present, unless specifically stated to the contrary, excluding other components. It should be interpreted as being able to include other components. All terms, including technical or scientific terms, unless otherwise defined, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains. Commonly used terms, such as terms defined in a dictionary, should be interpreted as consistent with the contextual meaning of the related technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined in the present invention.

As described above, the present invention is not limited to the above-described embodiments, and modifications and implementations can be made by those skilled in the art without departing from the scope of the claims of the present invention. And such modifications fall within the scope of the present invention.

10: upper housing part 11: inflow passage
12: discharge passage 13: upper filter insertion hole
14: Adapter insertion hole 17: Upper sealing groove
20: Adapter part 23: Guide passage
24: catching groove part 30: coalescer filter part
31: Through hole 32: Filter passage
40: cap part 50: lower housing part
51: fastening protrusion 54: plug coupling hole
55: Lower sealing groove 56: Upper sealing protrusion
60: Plug part 61: Sealing groove part
62: Lower sealing protrusion 70: Fix bar
80: Lower metal gasket 90: Upper metal gasket
100: Filter device for hydrogen charging station

Claims (10)

An upper housing portion in which an inflow passage and an discharge passage are formed on one side and the other side, and an adapter insertion hole through which the inflow passage communicates and an upper filter insertion hole through which the end of the discharge passage communicates are formed in a stepped manner in the lower center;
an adapter portion whose outer surface is screwed to the adapter insertion hole and through which a guide passage is formed in the vertical direction, with a cross-sectional area of the upper end communicating with the inflow passage being set to be less than the cross-sectional area of the lower end;
a coalescer filter unit whose upper end is coupled to the lower end of the adapter unit, a filter passage whose upper end communicates with the lower end of the guide passage is formed through the outer portion, and whose side portion communicates with the discharge passage;
A cap portion whose upper end is coupled to the lower end of the coalescer filter portion; and
A fastening protrusion protrudes upward from the upper surface to be screwed to the inner periphery of the upper filter insertion hole, the upper surface of the outer border is in close contact with the lower surface of the outer border of the upper housing part, and the side part of the coalescer filter part is inserted in the center while being spaced apart from the inner wall surface. A filter device for a hydrogen charging station including a lower housing portion in which a lower filter insertion hole is formed. According to claim 1,
A filter device for a hydrogen charging station, wherein the guide passage is inclined radially outward toward the bottom of the adapter portion. According to claim 1,
A filter device for a hydrogen charging station, wherein the guide passage is formed in an annular cross-sectional shape penetrating upward and downward along the circumferential direction at a position spaced radially outward with respect to the center of the adapter portion. According to claim 1,
The guide passages are spaced apart from each other at even intervals based on the center of the adapter unit and are formed through a plurality of points in the vertical direction.
A filter for a hydrogen charging station, wherein the coalescer filter units are provided in numbers corresponding to the guide passages, and the upper ends of each filter passage penetrating in the vertical direction through the central portion of each coalescer filter unit communicate with each of the guide passages. Device. According to claim 4,
A filter device for a hydrogen charging station, characterized in that each of the coalescer filter units extends in the vertical direction and the upper end is disposed at uniform intervals along the circumferential direction around a fix bar coupled to a locking groove formed upwardly recessed in the center of the lower surface of the adapter unit. . According to claim 1,
The guide path is
A first guide passage formed primarily through the upper surface of the adapter unit in the vertical direction,
A filter for a hydrogen charging station, which is in communication with the first guide passage but includes a second guide passage that extends obliquely outward in the radial direction along the circumference downward from the bottom of the first guide passage and is formed through secondary penetration. Device. According to claim 6,
A filter device for a hydrogen charging station, characterized in that an expansion passage is formed in the adapter part in which the lower end of the second guide passage is steppedly expanded inward and outward in the radial direction. According to claim 1,
A plug coupling hole whose upper end communicates stepwise with the lower filter insertion hole is formed through the lower housing portion in the vertical direction,
A filter device for a hydrogen charging station, characterized in that the outer periphery is screwed to the plug coupling hole and further includes a plug portion in which a sealing groove is recessed downward from the upper surface. According to claim 8,
A locking groove is formed upwardly recessed in the center of the lower surface of the adapter part,
A hydrogen charging station, characterized in that it extends in the vertical direction, and the lower and upper ends are coupled to the sealing groove and the locking groove, respectively, and the upper outer surface of the filter fixing part extending from the outer periphery further includes a fix bar facing the lower surface of the cap part. Filter device. According to claim 8,
A lower sealing protrusion and an upper sealing protrusion each protrude upward along the circumferential direction on the outer upper surface of the plug portion and the upper surface of the fastening protrusion,
In the lower housing portion and the upper housing portion, a lower sealing groove and an upper sealing groove are recessed upward in the circumferential direction from the outer surface of the upper surface of the plug coupling hole and the upper filter insertion hole, which are opposite to the lower sealing protrusion and the upper sealing protrusion, respectively. formed,
Hydrogen charging, characterized in that it further includes a lower metal gasket and an upper metal gasket made of a metal material and plastically deformed between the lower sealing protrusion and the lower sealing groove and between the upper sealing protrusion and the upper sealing groove, respectively. Filter device for use.