A fuel cell hidden filter device

Abstract

The utility model relates to fuel cell technical field especially relates to a kind of fuel cell hidden filter device, including inlet pair fittings, device main body and filter screen cylinder, device main body is provided with inlet connecting seat, the inside of filter screen cylinder is equipped with inner layer filter screen, filter screen cylinder's barrel mouth is fixedly connected with filter screen inlet skeleton, the inside of inlet connecting seat is equipped with annular placement groove, filter screen inlet skeleton is placed in annular placement groove, first sealing groove is equipped with first sealing ring in the outside of filter screen inlet skeleton close to annular placement groove, inlet pair fittings are fixedly connected on inlet connecting seat by bolt, the side of inlet pair fittings close to inlet connecting seat is equipped with second sealing groove, second sealing groove is equipped with second sealing ring, the inside diameter of inlet pair fittings is greater than the inside diameter of annular placement groove;The utility model does not need additional space to arrange filter, and it is convenient to arrange, and simple structure;Without additional increase interface, reduce the risk of liquid leakage.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell technology, and more specifically to a fuel cell concealed filtration device. Background Technology

[0002] Among new energy vehicles, hydrogen fuel cell vehicles are expected to become the most ideal form of clean energy in the future. During the operation of a fuel cell system, a cooling system is needed to discharge the waste heat generated by the fuel cell system to the outside environment; the medium is usually antifreeze or deionized water. During system installation, testing, fluid addition, venting, and maintenance, impurities inevitably enter the system; even malfunctions of some components can lead to impurities entering the system. If impurities enter the fuel cell stack, they can cause blockage of the stack's flow channels, severely affecting stack performance and even damaging the system. Therefore, the system needs to have the function of filtering impurities to protect the fuel cell stack.

[0003] Existing technologies for fuel cell cooling system filtration devices fall into two categories: one involves directly welding a metal filter screen inside a metal joint, but this poses an insulation risk; the other uses an insulating material for the outer shell, with multiple internal seals and end caps, and is installed in the piping. This type is complex, involves numerous piping joints, and is difficult to arrange. Both technologies typically use circular filter screens; smaller screens result in higher flow resistance, and reducing flow resistance requires increasing the circular size, which is inconvenient for design and layout. Utility Model Content

[0004] The purpose of this invention is to provide a hidden filter device for fuel cells, which eliminates the need for additional space to arrange the filter, making it easy to install and simple in structure; it also eliminates the need for additional interfaces, reducing the risk of leakage.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A fuel cell concealed filtration device includes an inlet fitting, a device body, and a filter cylinder. The device body has an inlet connector. An inner filter is installed on the inner side of the filter cylinder. A filter inlet frame is fixedly connected to the opening of the filter cylinder. An annular groove is formed on the inner side of the inlet connector, and the filter inlet frame is placed within the annular groove. A first sealing groove is formed on the outer side of the filter inlet frame near the annular groove, and a first sealing ring is provided within the first sealing groove. The inlet fitting is fixedly connected to the inlet connector by bolts. A second sealing groove is formed on the side of the inlet fitting near the inlet connector, and a second sealing ring is provided within the second sealing groove. The inner diameter of the inlet fitting is larger than the inner diameter of the annular groove.

[0007] Furthermore, an outer filter screen is installed on the outside of the filter cylinder.

[0008] Furthermore, the main body of the device is provided with a main outlet and multiple integrated distribution ports.

[0009] Furthermore, the inlet fittings and the main body of the device are made of insulating polyphenylene sulfide material, and the filter cylinder is made of metal material.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention places the filter screen inside the main body of the device, concealing the filter screen for a simple and aesthetically pleasing design; it eliminates the need for additional space to arrange the filter, making it easy to place and simple in structure; and it eliminates the need for additional interfaces, reducing the risk of leakage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0014] Figure 3 This is a cross-sectional view of the present invention.

[0015] 1. Inlet fittings; 101. Second sealing groove; 2. Main body of the device; 201. Annular placement groove; 202. Main outlet; 203. Integrated distribution port; 21. Inlet connection seat; 3. Filter screen cylinder; 4. Inner filter screen; 5. Filter screen inlet skeleton; 501. First sealing groove; 6. First sealing ring; 7. Second sealing ring; 8. Outer filter screen. Detailed Implementation

[0016] like Figures 1 to 3 As shown, a fuel cell concealed filtration device includes an inlet fitting 1, a device body 2, and a filter cylinder 3. The device body 2 is provided with an inlet connector 21. An inner filter 4 is installed on the inner side of the filter cylinder 3. A filter inlet frame 5 is fixedly connected to the opening of the filter cylinder 3. An annular placement groove 201 is formed on the inner side of the inlet connector 21, and the filter inlet frame 5 is placed in the annular placement groove 201. A first sealing groove 501 is formed on the outer side of the filter inlet frame 5 near the annular placement groove 201, and a first sealing ring 6 is provided in the first sealing groove 501. The inlet fitting 1 is fixedly connected to the inlet connector 21 by bolts. A second sealing groove 101 is formed on the side of the inlet fitting 1 near the inlet connector 21, and a second sealing ring 7 is provided in the second sealing groove 101. The inner diameter of the inlet fitting 1 is larger than the inner diameter of the annular placement groove 201.

[0017] An outer filter 8 is installed on the outside of the filter cylinder 3.

[0018] The main body 2 of the device is provided with a main outlet 202 and multiple integrated distribution ports 203.

[0019] The inlet fitting 1 and the main body of the device 2 are made of insulating polyphenylene sulfide material, and the filter cylinder 3 is made of metal material.

[0020] Working principle:

[0021] Filtration Function: After the cooling medium enters the inlet of component 1, it passes entirely through the inner filter screen 4 under the sealing effect of the first sealing ring 6, achieving the function of filtering impurities. The inner filter screen 4 expands outward under the impact of the coolant flow. The filter cylinder 3 supports and protects the inner filter screen 4. Clean coolant enters the system through the inner filter screen 4, the filter cylinder 3, and the outer filter screen 8, while impurities are blocked by the inner filter screen 4 and remain, thus achieving the filtration effect. The clean coolant is divided into multiple streams and flows out of the main body 2 through the main outlet 202 and the integrated distribution port 203.

[0022] Insulation function: The inlet fitting 1 and the main body of the device 2 are made of polyphenylene sulfide (PPS) as insulation material, and the filter screen 3 is made of metal. The filter screen 3 is installed inside the main body of the device 2. The charged coolant passes through the filter screen 3 and is sealed and isolated from the outside by the second sealing ring 7, thereby achieving the insulation function.

[0023] Reduced flow resistance function: The coolant flows through the filter cylinder 3, part of which flows through the side of the filter cylinder 3 and part of which flows through the bottom of the filter cylinder 3, increasing the overall flow area and thus reducing flow resistance.

[0024] Cleaning and maintenance: Remove the bolts, take off the inlet fitting 1, use a tool to clamp the filter screen inlet frame 5 and pull it out along the axis, then pull out the filter screen cylinder 3 and clean and maintain it.

[0025] This utility model adopts a concealed filter screen, which is simple and beautiful; no extra space is needed to arrange the filter, making it convenient and simple in structure; no additional interfaces are needed, reducing the risk of leakage; the integrated structure saves space and reduces costs; the metal filter screen cylinder is hidden inside the insulating shell, ensuring insulation and safety; the filter screen cylinder is installed by compression with a sealing ring, making maintenance convenient; a double-layer filter screen is used, resulting in a stable structure; the filtration flow area is large, the flow resistance is low, and the system efficiency is improved.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fuel cell hidden filter apparatus, characterized by: The device includes an inlet fitting (1), a main body (2), and a filter cylinder (3). The main body (2) is provided with an inlet connector (21). An inner filter (4) is installed on the inner side of the filter cylinder (3). A filter inlet frame (5) is fixedly connected to the opening of the filter cylinder (3). An annular placement groove (201) is provided on the inner side of the inlet connector (21). The filter inlet frame (5) is placed in the annular placement groove (201). The outer side of the filter inlet frame (5) is close to the annular groove. The placement groove (201) has a first sealing groove (501), and a first sealing ring (6) is provided in the first sealing groove (501). The inlet fitting (1) is fixedly connected to the inlet connecting seat (21) by bolts. The inlet fitting (1) has a second sealing groove (101) on the side near the inlet connecting seat (21), and a second sealing ring (7) is provided in the second sealing groove (101). The inner diameter of the inlet fitting (1) is larger than the inner diameter of the annular placement groove (201).

2. The fuel cell hidden filter apparatus of claim 1, wherein: An outer filter (8) is installed on the outside of the filter cylinder (3).

3. The fuel cell concealed filtration device as described in claim 1, characterized in that: The main body (2) of the device is provided with a main outlet (202) and multiple integrated distribution ports (203).

4. The fuel cell concealed filtration device as described in claim 1, characterized in that: The inlet fitting (1) and the main body of the device (2) are made of insulating polyphenylene sulfide material, and the filter cylinder (3) is made of metal material.

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