Filter with interchangeable air inlet channel and air outlet channel

Abstract

The utility model discloses a filter with interchangeable air inlet and outlet channels, belongs to the technical field of filters, and solves the technical problems that the existing filter scheme does not support the interchange of the air inlet and outlet channels and is very unfavorable for the arrangement of a whole machine. The filter comprises a filter seat, a filter tank is arranged at the bottom of the filter seat, a filter element assembly is arranged in the filter tank, connectors are arranged on the two sides of the upper end of the filter seat respectively, an air channel communicated with a center hole of the filter element assembly is arranged in the filter seat, one connector is communicated with the air channel, and the other connector is communicated with an inner cavity of the filter tank. The wall of the filter element assembly is sequentially provided with a first filter layer, a second filter layer, a non-woven fabric layer, a protective net layer and a felt layer from inside to outside, the first filter layer is formed by laminating a plurality of layers of first filter materials, the diameters of filter holes of the plurality of layers of first filter materials are gradually reduced from inside to outside, and the second filter layer is formed by laminating a plurality of layers of second filter materials. The apertures of the filtering holes of the multiple layers of second filtering materials are gradually increased from inside to outside in sequence.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and more specifically, it relates to a filter with interchangeable inlet and outlet air channels. Background Technology

[0002] During operation, engines require clean fuel for combustion. This not only maximizes engine power and fuel economy but also reduces the risk of blockages and corrosion in critical engine components, thus improving engine reliability. Fuel filters remove oil, moisture, and particulate impurities from the fuel, playing a crucial role in delivering clean fuel to the engine.

[0003] However, current filter designs do not support interchangeable inlet and outlet channels, which is very inconvenient for overall machine layout. Moreover, if operators accidentally connect the filter's outlet channel incorrectly, the filter can easily be damaged. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the above-mentioned shortcomings of the prior art. The purpose of this utility model is to provide a filter with interchangeable inlet and outlet air channels.

[0005] The technical solution of this utility model is: a filter with interchangeable inlet and outlet air channels, including a filter base, a filter canister at the bottom of the filter base, a filter element assembly inside the filter canister, connectors on both sides of the upper end of the filter base, an air passage communicating with the central hole of the filter element assembly inside the filter base, one of the connectors communicating with the air passage, and the other connector communicating with the inner cavity of the filter canister, the filter element assembly having a cylindrical structure, the wall of the filter element assembly having, from the inside to the outside, a first filter layer, a second filter layer, a non-woven fabric layer, a protective mesh layer, and a felt layer, the first filter layer being composed of multiple layers of first filter material bonded together, the pore size of the multiple layers of first filter material gradually decreasing from the inside to the outside, the second filter layer being composed of multiple layers of second filter material bonded together, the pore size of the multiple layers of second filter material gradually increasing from the inside to the outside.

[0006] As a further improvement, the bottom of the filter element assembly is provided with an air-barrier membrane, the edge of which contacts the inner wall of the filter tank, and the inner cavity of the filter tank below the air-barrier membrane serves as a water filtration chamber.

[0007] Furthermore, a water level detection sensor is installed inside the filtration chamber.

[0008] Furthermore, an electric drain valve is provided at the bottom of the filtered water chamber.

[0009] Furthermore, the air-barrier membrane is a hydrophilic membrane or ultrafiltration membrane that allows water to pass through but not air.

[0010] Furthermore, both the first and second filter media are glass fiber filter materials.

[0011] Furthermore, the filter element assembly has a cylindrical structure, and the wall of the filter element assembly is designed as a triangular pleated structure.

[0012] Furthermore, the filter housing and the connector are connected by a thread.

[0013] Furthermore, the outer wall of the end of the connector that contacts the filter seat is provided with a positioning step, and a sealing ring is provided between the positioning step and the filter seat.

[0014] Furthermore, the transition between the positioning step and the connector is provided with a mounting groove for installing the sealing ring, and the end face of the mounting hole of the connector of the filter seat is provided with an arc-shaped groove that fits with the sealing ring.

[0015] Beneficial effects

[0016] Compared with the prior art, the advantages of this utility model are as follows:

[0017] 1. The filter element assembly of this utility model has, from the inside out, a first filter layer, a second filter layer, a non-woven fabric layer, a protective mesh layer, and a felt layer. The first filter layer is composed of multiple layers of first filter material bonded together, with the pore size of the multiple layers of first filter material gradually decreasing from the inside out. The second filter layer is composed of multiple layers of second filter material bonded together, with the pore size of the multiple layers of second filter material gradually increasing from the inside out. This ensures that when the inlet and outlet air channels are interchanged, new energy gases such as ammonia and hydrogen will always pass through the larger pores of the multiple layers of filter material first, and then through the smaller pores, improving filtration efficiency and lifespan, while also facilitating vehicle layout and installation.

[0018] 2. The filter of this utility model can switch between air intake in both directions during operation. The filter element filters oil, water and particulate impurities in new energy fuels such as ammonia and hydrogen. After the filter has finished working, when the vehicle's monitoring system detects that the sewage in the space under the air barrier membrane has reached the water level monitoring alarm line, it can start automatic sewage discharge. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a partially enlarged structural schematic diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the filter element assembly in this utility model;

[0022] Figure 4 for Figure 3 A schematic diagram of the internal structure of the middle filter element assembly A.

[0023] The components are: 1-Filter holder, 2-Filter canister, 3-Filter element assembly, 4-Connector, 5-Air passage, 6-First filter layer, 7-Second filter layer, 8-Non-woven fabric layer, 9-Protective mesh layer, 10-Felt layer, 11-Air barrier membrane, 12-Filter water chamber, 13-Water level detection sensor, 14-Electric drain valve, 15-Positioning step, 16-Sealing ring, 17-Mounting groove, 18-Mounting hole, 19-Arc groove. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments shown in the accompanying drawings.

[0025] Engine fuel media can be broadly categorized into traditional fuel oil and natural gas, as well as newer alternative energy sources such as ammonia, hydrogen, and methanol. Therefore, based on the fuel medium, filters can be classified into fuel filters, natural gas filters, ammonia filters, etc. While fuel and natural gas filter technologies are relatively mature, the development of filters for newer alternative energy sources like ammonia / hydrogen is currently lacking in China. Therefore, developing filter technologies suitable for these alternative energy sources is particularly important. Furthermore, current filter designs do not support interchangeable inlet and outlet air passages, which is highly detrimental to overall engine layout.

[0026] See Figures 1-4 A filter with interchangeable inlet and outlet air channels includes a filter base 1, with a filter canister 2 at the bottom of the filter base 1. A filter element assembly 3 is housed inside the filter canister 2. Connectors 4 are located on both sides of the upper end of the filter base 1, respectively connecting the inlet and outlet air channels. An air passage 5 communicating with the central hole of the filter element assembly 3 is located inside the filter base 1. One connector 4 connects to the air passage 5, and the other connector 4 connects to the inner cavity of the filter canister 2. The filter element assembly 3 has a cylindrical structure. From the inside out, the wall of the filter element assembly 3 is provided with a first filter layer 6, a second filter layer 7, a non-woven fabric layer 8, a protective mesh layer 9, and a felt layer 10. The first filter layer 6 is composed of multiple layers of first filter material bonded together, with the pore size of the multiple layers of first filter material gradually decreasing from the inside out. The second filter layer 7 is composed of multiple layers of second filter material bonded together, with the pore size of the multiple layers of second filter material gradually increasing from the inside out.

[0027] In this way, when the inlet and outlet air channels are interchanged, new energy fuels such as ammonia and hydrogen will always pass through the large pores of the multi-layer filter material first, and then through the small pores, which improves filtration efficiency and lifespan, and at the same time facilitates the layout and installation of the whole vehicle.

[0028] Preferably, both the first and second filter media are glass fiber filter materials.

[0029] Furthermore, the bottom of the filter element assembly 3 is provided with an air-barrier membrane 11. The edge of the air-barrier membrane 11 contacts the inner wall of the filter tank 2. The air-barrier membrane 11 divides the inner cavity of the filter tank 2 into upper and lower parts. The inner cavity of the filter tank 2 below the air-barrier membrane 11 serves as the water filtration chamber 12.

[0030] A water level sensor 13 is installed inside the filter chamber 12 to detect the water level in real time. An electric drain valve 14 is installed at the bottom of the filter chamber 12 to discharge wastewater. The water level sensor 13 and the electric drain valve 14 can be connected to the vehicle's infotainment system via signal lines. When the infotainment system detects that the wastewater in the filter chamber 12 below the air barrier membrane has reached the water level alarm line, it can activate the electric drain valve 14 to automatically discharge the wastewater.

[0031] In this embodiment, the air-barrier membrane 11 is a hydrophilic membrane or ultrafiltration membrane that allows water to pass through but not air. That is, the air-barrier membrane 11 allows water to pass through easily, but new energy sources such as ammonia and hydrogen do not easily pass through.

[0032] The filter element assembly 3 has a cylindrical structure, and the wall of the filter element assembly 3 is designed with a triangular pleated structure, which can increase the contact area for filtration and improve filtration efficiency.

[0033] In this embodiment, the filter holder 1 and the connector 4 are connected by a thread, which makes disassembly and assembly convenient.

[0034] Specifically, the outer wall of the end of the connector 4 that contacts the filter seat 1 is provided with a positioning step 15, and a sealing ring 16 is provided between the positioning step 15 and the filter seat 1.

[0035] Furthermore, the transition between the positioning step 15 and the connector 4 is provided with a mounting groove 17 for installing the sealing ring 16. The end face of the connector mounting hole 18 of the filter seat 1 (the connector 4 is threaded into the connector mounting hole 18) is provided with an arc-shaped groove 19 that fits with the sealing ring 16. The sealing ring 16 fits with the arc-shaped groove 19, which can increase the sealing contact area and improve the sealing performance.

[0036] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. A filter with interchangeable inlet and outlet air channels, characterized in that, The filter includes a filter holder (1), a filter canister (2) at the bottom of the filter holder (1), a filter element assembly (3) inside the filter canister (2), connectors (4) on both sides of the upper end of the filter holder (1), and an air passage (5) inside the filter holder (1) communicating with the central hole of the filter element assembly (3). One of the connectors (4) communicates with the air passage (5), and the other connector (4) communicates with the inner cavity of the filter canister (2). The core assembly (3) has a cylindrical structure. The wall of the filter core assembly (3) is provided with a first filter layer (6), a second filter layer (7), a non-woven fabric layer (8), a protective mesh layer (9), and a felt layer (10) from the inside to the outside. The first filter layer (6) is composed of multiple layers of first filter material bonded together. The pore size of the multiple layers of first filter material gradually decreases from the inside to the outside. The second filter layer (7) is composed of multiple layers of second filter material bonded together. The pore size of the multiple layers of second filter material gradually increases from the inside to the outside.

2. A filter with interchangeable inlet and outlet air channels according to claim 1, characterized in that, The bottom of the filter element assembly (3) is provided with an air-barrier membrane (11), the edge of which contacts the inner wall of the filter tank (2), and the inner cavity of the filter tank (2) below the air-barrier membrane (11) serves as a water filtration chamber (12).

3. A filter with interchangeable inlet and outlet air channels according to claim 2, characterized in that, A water level detection sensor (13) is installed inside the water filtration chamber (12).

4. A filter with interchangeable inlet and outlet air channels according to claim 3, characterized in that, The bottom of the filter water chamber (12) is equipped with an electric drain valve (14).

5. A filter with interchangeable inlet and outlet air channels according to claim 2, characterized in that, The air-barrier membrane (11) is a hydrophilic membrane or ultrafiltration membrane that allows water to pass through but not air.

6. A filter with interchangeable inlet and outlet air channels according to claim 1, characterized in that, Both the first and second filter media are glass fiber filter materials.

7. A filter with interchangeable inlet and outlet air channels according to claim 1, characterized in that, The filter element assembly (3) has a cylindrical structure, and the wall of the filter element assembly (3) is designed as a triangular pleated structure.

8. A filter with interchangeable inlet and outlet air channels according to claim 1, characterized in that, The filter holder (1) and the connector (4) are connected by a thread.

9. A filter with interchangeable inlet and outlet air channels according to claim 1, characterized in that, The outer wall of the end of the connector (4) that contacts the filter seat (1) is provided with a positioning step (15), and a sealing ring (16) is provided between the positioning step (15) and the filter seat (1).

10. A filter with interchangeable inlet and outlet air channels according to claim 9, characterized in that, The transition between the positioning step (15) and the connector (4) is provided with an installation groove (17) for installing the sealing ring (16), and the end face of the connector mounting hole (18) of the filter seat (1) is provided with an arc-shaped groove (19) that fits with the sealing ring (16).

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