Air filter and hydrogen fuel cell system

Abstract

The utility model relates to the technical field of hydrogen fuel cells, and discloses an air filter and a hydrogen fuel cell system, the air filter comprises a box body, a fixing plate, a pressing plate, a filter element and an air outlet pipe; a mounting opening is formed in the upper end of the box body; the fixing plate is arranged in the containing cavity, and an air outlet cavity is formed between the fixing plate and the inner wall of the containing cavity; the pressing plate is arranged in the containing cavity, and an air inlet cavity is formed between the pressing plate and the inner wall of the containing cavity. The filter element is arranged between the fixing plate and the pressing plate and can enter and exit from the accommodating cavity through the mounting opening; the air outlet pipe is communicated with the air outlet chamber; according to the air filter provided by the utility model, the mounting opening is formed in the upper end of the box body, and the filter element is arranged between the pressing plate and the fixing plate, so that the filter element can be replaced in an up-down plugging manner, a larger maintenance space does not need to be reserved in the transverse direction for replacing the filter element, the required mounting and maintenance space is smaller, and the structure is compact.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cells, in particular to an air filter and a hydrogen fuel cell system. Background Art

[0002] Currently, most air filters for hydrogen fuel cell systems are developed based on commercial vehicle application scenarios, and there are almost no finished air filters developed for the rail transit industry. As a result, most of the air filters in the current rail transit industry use drum-type air filters from the commercial vehicle field.

[0003] When the drum-type air filter in the commercial vehicle field is used in the rail transit field, the dust collection at the tail cannot be facing upward, resulting in the inability to replace the filter element by plugging and unplugging it up and down. A large maintenance space must be reserved horizontally for replacing the filter element, and the structure is not compact enough. Utility Model Content

[0004] Aiming to solve at least one of the technical problems existing in the prior art, the utility model aims to provide an air filter and a hydrogen fuel cell having the air filter. The air filter requires a small installation and maintenance space and has a compact structure.

[0005] and a tube connecting the discharging opening of the filter element to the outlet port and the outlet port of the filter element. The tube connecting the discharging opening of the filter element to the outlet port is connected to the elongated plate and the feed port of the filter element to the outlet port.

[0006] In some embodiments, the air filter also includes a lock assembly, which includes a first lock and a second lock, the first lock is fixedly connected to the upper end of the box body, and the second lock is fixedly connected to the upper end of the pressure plate and cooperates with the first lock; the lower end of the pressure plate is rotatably connected to the box body; wherein, when the lock assembly is in a locked state, the second lock is engaged and connected to the first lock to limit the rotation of the pressure plate around the first axis, and the lock assembly blocks the mounting port to limit the filter element from entering and exiting the accommodating chamber through the mounting port; when the lock assembly is in an unlocked state, the first lock and the second lock are separated to enable the pressure plate to rotate around the first axis, and the lock assembly opens the mounting port to enable the filter element to enter and exit the accommodating chamber through the mounting port.

[0007] In some embodiments, the box body includes a front panel, a first side panel, a back panel, a second side panel, a bottom panel and a first top panel, the two ends of the first side panel are respectively connected to the front panel and the back panel, the two ends of the second side panel are respectively connected to the front panel and the back panel, the second side panel is located on one side of the first side panel and opposite to the first side panel, the back panel, the first side panel and the second side panel are all connected to the bottom panel, the first top panel is located above the bottom panel and opposite to the bottom panel, the back panel, the first side panel and the second side panel are all connected to the first top panel; the front panel, the first side panel, the pressure plate and the second side panel form an air inlet chamber, and the back panel, the first side panel, the second side panel, the first top panel, the bottom panel and the fixed plate form an air outlet chamber.

[0008] In some embodiments, the air inlet is formed between the front plate and the bottom plate.

[0009] In some embodiments, the box body also includes a second top plate, the second top plate is connected to the upper end of the front plate, the first side plate and the second side plate are both connected to the second top plate, and the mounting port is formed between the second top plate and the first top plate.

[0010] In some embodiments, the housing further includes a support plate, which is disposed in the accommodating cavity and is used to support the filter element.

[0011] In some embodiments, a mounting member is further included, wherein the mounting member is connected to the outer wall of the box body and has a mounting hole.

[0012] In some embodiments, the filter element includes a frame and filter cotton, and the filter cotton is arranged in the frame and connected to the inner side wall of the frame.

[0013] In some embodiments, the filter element further includes a sealing strip connected to the frame and located between the frame and the fixing plate.

[0014] The utility model also provides a hydrogen fuel cell system, comprising the air filter according to any one of the above items.

[0015] The invention also provides a method of replacing the filter element in the air filter housing by removing the filter element from the air filter housing and removing the filter element from the air filter housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of an air filter provided by an embodiment of the present utility model;

[0017] Figure 2 This is a schematic structural diagram of a box provided by an embodiment of the present utility model;

[0018] Figure 3 It is a cross-sectional view of the box provided by an embodiment of the utility model;

[0019] Figure 4 This is a cross-sectional view of the lock assembly provided by an embodiment of the present utility model when it is in a locked state;

[0020] Figure 5 is a cross-sectional schematic diagram of the lock hook assembly provided by an embodiment of the present utility model in an unlocked state;

[0021] Figure 6 This is a first cross-sectional view of an air filter provided by an embodiment of the present utility model;

[0022] Figure 7 This is a second cross-sectional view of an air filter provided by an embodiment of the present utility model;

[0023] Figure 8This is a schematic structural diagram of a fixing plate provided in an embodiment of the present utility model;

[0024] Figure 9 This is a schematic structural diagram of a pressure plate provided by an embodiment of the present utility model;

[0025] Figure 10 It is a structural schematic diagram of the filter element provided by an embodiment of the utility model.

[0026] In the figure, 1, box body; 11, front panel; 12, first side panel; 13, back panel; 14, second side panel; 15, first top panel; 16, second top panel; 17, support panel; 18, bottom panel; 101, accommodating cavity; 102, mounting port; 103, air inlet;

[0027] 2. Fixed plate; 21. Air outlet; 201. Air outlet chamber;

[0028] 3. Press plate; 31. Air inlet; 301. Air inlet chamber;

[0029] 4. Exhaust pipe; 41. Inlet end; 42. Exhaust end;

[0030] 5. Locking buckle assembly; 51. First locking buckle; 52. Second locking buckle;

[0031] 6. Mounting parts; 61. Mounting holes;

[0032] 7. Filter element; 71. Frame; 72. Filter cotton; 73. Sealing strip.

[0033] 10. The first axis. DETAILED DESCRIPTION

[0034] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0037] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0040] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0041] like Figures 1-10 As shown, an air filter preferably used in an embodiment of the present invention includes a box body 1, a fixing plate 2, a pressing plate 3, a filter element 7 and an air outlet pipe 4.

[0042] The box body 1 has a accommodating chamber 101, and the upper end of the box body 1 has a mounting port 102 connected to the accommodating chamber 101; the fixed plate 2 is arranged in the accommodating chamber 101 and connected to the box body 1, and an air outlet chamber 201 is formed between the fixed plate 2 and the inner wall of the accommodating chamber 101, and the fixed plate 2 has a penetrating air outlet hole 21; the pressing plate 3 is arranged in the accommodating chamber 101 and is located on one side of the fixed plate 2, and the pressing plate 3 is connected to the box body 1, and an air inlet chamber 301 is formed between the pressing plate 3 and the inner wall of the accommodating chamber 101, the box body 1 has an air inlet port 103 connected to the air inlet chamber 301, and the pressing plate 3 has a penetrating air inlet hole 31; the filter element 7 is arranged between the fixed plate 2 and the pressing plate 3 and can enter and exit the accommodating chamber 101 through the mounting port 102; the air outlet pipe 4 is connected to the box body 1 and is connected to the air outlet chamber 201.

[0043] Based on this technical solution, by arranging the filter element 7 between the pressing plate 3 and the fixed plate 2, when the filter element 7 does not need to be replaced, air enters the air inlet chamber 301 from the air inlet port 103, and then flows from the air inlet chamber 301 through the air inlet hole 31 to the filter element 7 and is filtered by the filter element 7. The filtered air flows through the air outlet hole 21 to the air outlet chamber 201 and leaves the air outlet chamber 201 through the air outlet pipe 4; when the filter element 7 needs to be replaced, the old filter element 7 is pulled out from between the pressing plate 3 and the fixed plate 2 through the installation port 102 and the old filter element 7 is taken out of the accommodating chamber 101 through the installation port 102. Then put the new filter element 7 into the accommodating cavity 101 through the installation port 102 and insert the new filter element 7 between the pressure plate 3 and the fixed plate 2; therefore, the air filter provided by the utility model has the installation port 102 set at the upper end of the box body 1 and the filter element 7 is set between the pressure plate 3 and the fixed plate 2, so that the filter element 7 can be replaced by plugging and unplugging it up and down, and there is no need to reserve a large maintenance space in the horizontal direction for replacing the filter element. The required installation and maintenance space is small and the structure is compact, so that the air filter provided by the utility model can better meet the integrated layout requirements of hydrogen fuel cells in the rail transit field.

[0044] The air outlet pipe 4 has an air inlet end 41 and an air outlet end 42. The air inlet end 41 extends into the air outlet chamber 201, and the pipe opening of the air inlet end 41 is located in the upper middle part of the air outlet chamber 201. This can prevent dust from falling directly into the pipe opening of the air inlet pipe when replacing the filter element 7 and being sucked into the air compressor.

[0045] See Figure 1-Figure 3The box body 1 includes a front plate 11, a first side plate 12, a back plate 13, a second side plate 14, a bottom plate 18 and a first top plate 15, two ends of the first side plate 12 are respectively connected to the front plate 11 and the back plate 13, two ends of the second side plate 14 are respectively connected to the front plate 11 and the back plate 13, the second side plate 14 is located on one side of the first side plate 12 and opposite to the first side plate 12, the back plate 13, the first side plate 12 and the second side plate 14 are all connected to the bottom plate 18, the first top plate 15 is located above the bottom plate 18 and opposite to the bottom plate 18, the back plate 13, the first side plate 12 and the second side plate 14 are all connected to the first top plate 15; the front plate 11, the first side plate 12, the pressure plate 3 and the second side plate 14 are enclosed to form an air inlet chamber 301, and the back plate 13, the first side plate 12, the second side plate 14, the first top plate 15, the bottom plate 18 and the fixed plate 2 are enclosed to form an air outlet chamber 201. An air outlet chamber 201 is formed by enclosing the back panel 13, the first side panel 12, the second side panel 14, the first top panel 15, the bottom panel 18 and the fixed panel 2. The back panel 13, the first side panel 12, the second side panel 14, the first top panel 15 and the bottom panel 18 can block the filtered air in the air outlet chamber 201 to ensure that the air in the air outlet chamber 201 leaves the air outlet chamber 201 through the air outlet pipe 4.

[0046] In this embodiment, two ends of the fixing plate 2 are connected to the first side plate 12 and the second side plate 14 respectively.

[0047] An air inlet 103 is formed between the front plate 11 and the bottom plate 18. Positioning the air inlet 103 below the housing 1 guides air from the bottom of the housing 1 into the air inlet chamber 301, eliminating the need for the air inlet surface of the filter element 7 to face the air inlet 103. This prevents debris such as leaves from being attracted to the air inlet surface of the filter element 7, which could reduce or even render the filter element 7 ineffective.

[0048] The housing 1 further includes a second top plate 16, which is connected to the upper end of the front plate 11. The first side plate 12 and the second side plate 14 are both connected to the second top plate 16. A mounting opening 102 is formed between the second top plate 16 and the first top plate 15. The second top plate 16 can block rainwater to reduce the amount of rainwater that enters the air inlet chamber 301.

[0049] See Figure 1-Figure 3 The air filter provided in this embodiment of the utility model further includes a mounting member 6, which is connected to the outer wall of the housing 1 and has a mounting hole 61. The air filter can be connected to other components of the hydrogen fuel cell system through the mounting hole 61 on the mounting member 6, facilitating quick and convenient installation of the air filter in the hydrogen fuel cell system.

[0050] See Figure 1 ,and Figure 4-Figure 7The air filter provided by the embodiment of the present utility model also includes a lock component 5, which includes a first lock component 51 and a second lock component 52. The first lock component 51 is fixedly connected to the upper end of the box body 1, and the second lock component 52 is fixedly connected to the upper end of the pressure plate 3 and cooperates with the first lock component 51; the lower end of the pressure plate 3 is rotatably connected to the box body 1; wherein, when the lock component 5 is in the locked state, the second lock component 52 is buckled and connected to the first lock component 51 to limit the rotation of the pressure plate 3 around the first axis 10, and the lock component 5 blocks the mounting port 102 to limit the filter element 7 from entering and exiting the accommodating chamber 101 through the mounting port 102; when the lock component 5 is in the unlocked state, the first lock component 51 and the second lock component 52 are separated to allow the pressure plate 3 to rotate around the first axis 10, and the lock component 5 opens the mounting port 102 to allow the filter element 7 to enter and exit the accommodating chamber 101 through the mounting port 102. In this way, when the filter element 7 does not need to be replaced, the pressure plate 3 is rotated around the first axis 10 to make the second lock buckle 52 gradually approach the first lock buckle 51, so that the pressure plate 3 can gradually press the filter element 7 and the pressure plate 3 and the fixing plate 2 clamp the filter element 7; when the second lock buckle 52 is buckled and connected to the first lock buckle 51, the lock buckle assembly 5 blocks the installation port 102 to restrict the filter element 7 from entering and exiting the accommodating chamber 101 through the installation port 102. By clamping and fixing the filter element 7 and restricting the filter element 7 from entering and exiting the accommodating chamber 101 by the pressure plate 3 and the fixing plate 2, the filter element 7 can be stably and firmly installed in the accommodating chamber 101 to prevent the filter element 7 from moving due to vibration or fluid flow during operation. At the same time, the filter element 7 is placed in a squeezed state received by the pressure plate 3 and the fixing plate 2, which can also improve the filter element 7 and the accommodating chamber. 101, so as to better ensure the sealing between the inner walls of the air inlet chamber 301 and the air outlet chamber 201 through the filter element 7; when the filter element 7 needs to be replaced, the second lock buckle 52 is unlocked from the first lock buckle 51, and then the pressure plate 3 is rotated around the first axis 10 to make the second lock buckle 52 gradually move away from the first lock buckle 51, so that the pressure plate 3 can gradually loosen the filter element 7, and when the second lock buckle 52 moves to the position of opening the mounting port 102, the old filter element 7 is pulled out from between the pressure plate 3 and the fixed plate 2 through the mounting port 102 and the old filter element 7 is taken out of the accommodating chamber 101 through the mounting port 102, and then the new filter element 7 is placed in the accommodating chamber 101 through the mounting hole 61 and the new filter element 7 is inserted between the pressure plate 3 and the fixed plate 2 to realize the replacement of the filter element 7.

[0051] In this embodiment, there are multiple locking components 5. The locking components 5 are locking components that can realize locking and unlocking functions in the prior art, and are not described in detail here.

[0052] In this embodiment, the lower end of the pressing plate 3 is rotatably connected to the supporting plate 17 .

[0053] The lower end of the pressing plate 3 can be rotatably connected to the supporting plate 17 through methods including but not limited to a hinge, a rotating shaft, a bearing, etc.

[0054] See Figure 8 In this embodiment, the air outlet holes 21 are air outlet grille holes. There are multiple air outlet grille holes. The air outlet grille holes not only ensure the smooth passage of air, but also play the role of fixing the plate 2 type filter element 7.

[0055] See Figure 9 In this embodiment, the air inlet 31 is an air inlet grille hole. There are multiple air inlet grille holes. The air inlet grille holes not only ensure the smooth passage of air, but also play the role of fixing the plate 2 type filter element 7.

[0056] See Figure 4-Figure 7 ,and Figure 10 The filter element 7 includes a frame 71 and filter pads 72. The filter pads 72 are positioned within the frame 71 and connected to the inner wall of the frame 71. The frame 71 shapes and secures the filter pads 72, ensuring that the front of the filter element 7 does not deform when squeezed. The filter element 7 also includes a sealing strip 73, which is connected to the frame 71 and located between the frame 71 and the fixed plate 2. The sealing strip 73 provides a seal, ensuring that air can only flow from the inlet chamber 301 to the outlet chamber 201 through the filter pads 72.

[0057] The utility model also provides a hydrogen fuel cell system, wherein the hydrogen fuel cell comprises any one of the above-mentioned air filters.

[0058] The hydrogen fuel cell system further includes an air compressor, and the outlet end 42 of the outlet pipe 4 is connected to the air compressor.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.

Claims

1. An air filter, characterized in that: include: A box body (1), the box body (1) having a receiving cavity (101), and an upper end of the box body (1) having a mounting opening (102) communicating with the receiving cavity (101); a fixed plate (2), the fixed plate (2) being arranged in the accommodating cavity (101) and connected to the box body (1), an air outlet chamber (201) being formed between the fixed plate (2) and the inner wall of the accommodating cavity (101), and the fixed plate (2) having an air outlet hole (21) extending therethrough; A pressure plate (3), the pressure plate (3) being arranged in the accommodating cavity (101) and located on one side of the fixing plate (2), the pressure plate (3) being connected to the box body (1), an air intake chamber (301) being formed between the pressure plate (3) and the inner wall of the accommodating cavity (101), the box body (1) having an air intake port (103) communicating with the air intake chamber (301), and the pressure plate (3) having an air intake hole (31) extending therethrough; a filter element (7), the filter element (7) being disposed between the fixing plate (2) and the pressing plate (3) and being capable of entering and exiting the accommodating cavity (101) through the mounting opening (102); An air outlet pipe (4), the air outlet pipe (4) is connected to the box body (1) and communicates with the air outlet chamber (201).

2. The air filter according to claim 1, characterized in that The box body (1) further comprises a locking assembly (5), wherein the locking assembly (5) comprises a first locking assembly (51) and a second locking assembly (52), wherein the first locking assembly (51) is fixedly connected to the upper end of the box body (1), and the second locking assembly (52) is fixedly connected to the upper end of the pressing plate (3) and cooperates with the first locking assembly (51); The lower end of the pressing plate (3) is rotatably connected to the box body (1); Wherein, when the locking assembly (5) is in a locked state, the second locking assembly (52) is engaged and connected to the first locking assembly (51) to restrict the pressure plate (3) from rotating around the first axis (10), and the locking assembly (5) blocks the installation opening (102) to restrict the filter element (7) from entering and exiting the accommodating chamber (101) through the installation opening (102); when the locking assembly (5) is in an unlocked state, the first locking assembly (51) and the second locking assembly (52) are separated to enable the pressure plate (3) to rotate around the first axis (10), and the locking assembly (5) opens the installation opening (102) to enable the filter element (7) to enter and exit the accommodating chamber (101) through the installation opening (102).

3. The air filter according to claim 1, characterized in that: The box body (1) comprises a front panel (11), a first side panel (12), a back panel (13), a second side panel (14), a bottom panel (18) and a first top panel (15); two ends of the first side panel (12) are respectively connected to the front panel (11) and the back panel (13); two ends of the second side panel (14) are respectively connected to the front panel (11) and the back panel (13); the second side panel (14) is located on one side of the first side panel (12) and is opposite to the first side panel (12); the back panel (13), the first side panel (12) and the second side panel (14) are all connected to the bottom panel (18); The first top plate (15) is located above the bottom plate (18) and opposite to the bottom plate (18); the back plate (13), the first side plate (12) and the second side plate (14) are all connected to the first top plate (15); the front plate (11), the first side plate (12), the pressure plate (3) and the second side plate (14) enclose the air inlet chamber (301); the back plate (13), the first side plate (12), the second side plate (14), the first top plate (15), the bottom plate (18) and the fixed plate (2) enclose the air outlet chamber (201).

4. The air filter according to claim 3, characterized in that: The air inlet (103) is formed between the front plate (11) and the bottom plate (18).

5. The air filter according to claim 3, characterized in that: The box body (1) further includes a second top plate (16), the second top plate (16) being connected to the upper end of the front plate (11), the first side plate (12) and the second side plate (14) being connected to the second top plate (16), and the mounting opening (102) being formed between the second top plate (16) and the first top plate (15).

6. The air filter according to claim 3, characterized in that: The box body (1) further comprises a support plate (17), wherein the support plate (17) is arranged in the accommodating cavity (101) and is used to support the filter element (7).

7. The air filter according to claim 1, characterized in that: It also includes a mounting member (6), the mounting member (6) being connected to the outer wall of the box body (1), and the mounting member (6) having a mounting hole (61).

8. The air filter according to claim 1, characterized in that: The filter element (7) comprises a frame (71) and filter cotton (72), wherein the filter cotton (72) is arranged in the frame (71) and connected to the inner side wall of the frame (71).

9. The air filter according to claim 8, characterized in that: The filter element (7) further comprises a sealing strip (73), wherein the sealing strip (73) is connected to the frame (71) and is located between the frame (71) and the fixing plate (2).

10. A hydrogen fuel cell system, characterized in that: The invention comprises an air filter according to any one of claims 1 to 9.

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