Fuel filter and vehicle

Abstract

The invention provides a fuel filter and a vehicle, and the fuel filter comprises a central pipe which is provided with a water repelling section and a water collecting section; the filter element is arranged outside the central pipe in a sleeving manner, and the filter element is respectively communicated with the water repelling section and the water collecting section; the water collecting cup is connected to the bottom of the central pipe, and the water collecting cup communicates with the water collecting section; the heater is arranged in at least one of the water repelling section and the water collecting section, and the heater is used for heating oil bodies on the dirty oil side and the clean oil side of the filter element. According to the scheme, the heater is integrated in the center pipe, the internal space of an engine compartment does not need to be occupied, a power source of the fuel filter can be utilized, the circuit layout of the heater is simplified, and then the manufacturing cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of filter elements, and more particularly, to a fuel filter and a vehicle. Background Art

[0002] In the automotive industry, fuel filters play an indispensable role. They are responsible for removing fine impurities and moisture from fuel, ensuring the purity of fuel, which is the basis for the efficient operation and extended lifespan of the engine. However, when a vehicle is driving in a cold environment, the challenges faced by fuel filters are particularly severe. Under low-temperature conditions, the density difference between water and oil significantly decreases, making it difficult for water droplets to effectively separate from the oil, easily forming ice crystals that clog the filter screen, greatly reducing the working efficiency of the fuel filter. In severe cases, it can even lead to the failure of the entire fuel system, directly threatening the normal operation of the engine and the safe driving of the vehicle.

[0003] To address this challenge, existing technical means usually involve installing an electric heating device inside or outside the fuel filter. By heating, the density difference between oil and water is increased to promote oil-water separation and prevent the formation of ice crystals. Although these methods have improved the oil-water separation performance in cold environments to a certain extent, they have also introduced a series of new problems. First, the additional electric heating device requires an independent power source and a complex circuit control system, significantly increasing the structural complexity and manufacturing cost of the fuel filter. Second, the addition of the heating device often occupies more space, especially in the limited engine compartment, which further compresses the layout space of other key components, affecting the flexibility and compactness of the overall design. Finally, frequent heating operations and complex control systems bring inconvenience to the daily maintenance of the fuel filter, prolonging the vehicle repair time and reducing the user experience.

[0004] There is currently no effective solution to the technical problems of the electric heating device of the fuel filter, such as large space occupation, high manufacturing cost, and complex circuit layout. Summary of the Invention

[0005] The main object of the present invention is to provide a fuel filter and a vehicle to solve the technical problems of large space occupation, high manufacturing cost, and complex circuit layout of the electric heating device of the fuel filter.

[0006] To achieve the above object, according to one aspect of the present invention, there is provided a fuel filter, including: a central tube provided with a water-repellent section and a water-collecting section; a filter element sleeved outside the central tube, the filter element being communicated with the water-repellent section and the water-collecting section respectively; a water-collecting cup connected to the bottom of the central tube, the water-collecting cup being communicated with the water-collecting section; a heater disposed in at least one of the water-repellent section and the water-collecting section, the heater being used for heating the oil bodies on the dirty oil side and the clean oil side of the filter element.

[0007] Furthermore, the central tube includes a first component segment and a second component segment, which are detachably connected. Among them, at least a water-repellent segment is formed on the first component segment, and at least a partial water-collecting segment is formed on the second component segment. The heater is arranged near the connection of the first component segment and the second component segment.

[0008] Furthermore, the water-collecting segment includes a first water-collecting segment and a second water-collecting segment. The first component segment is formed with a water-repellent segment and a first water-collecting segment, and the second component segment is formed with a second water-collecting segment. The first water-collecting segment and the second water-collecting segment are detachably connected, and an installation cavity is formed between the first water-collecting segment and the second water-collecting segment. The heater is arranged in the installation cavity.

[0009] Furthermore, a first partition plate is arranged between the first water-collecting segment and the water-repellent segment, and a second partition plate is arranged at one end of the second water-collecting segment close to the first water-collecting segment. An installation cavity is formed between the first partition plate and the second partition plate.

[0010] Furthermore, the water-repellent segment and the water-collecting segment are detachably connected, and an installation cavity is formed between the end of the water-repellent segment and the middle of the water-collecting segment. The heater is arranged in the installation cavity.

[0011] Furthermore, a hollow structure is formed on the water-collecting segment, and a reinforcing rib is formed between adjacent hollow structures. The reinforcing rib is arranged in a manner that fits the inner circle of the filter element.

[0012] Furthermore, a wire collecting tube is arranged inside the central tube. The wire collecting tube extends along the axial direction of the central tube, and the wires of the heater are arranged inside the wire collecting tube.

[0013] Furthermore, the water-repellent segment includes: a water-repellent net; water guide plates. There are multiple water guide plates, which are arranged outside the water-repellent net and distributed axially along the water-repellent net. An oil filtering port is formed between two adjacent water guide plates distributed axially along the water-repellent net. The filter element is communicated with the water-repellent net through the oil filtering port. Among them, the side of the water guide plate facing the water-collecting segment is inclined.

[0014] Furthermore, the water collecting cup includes: a cup cover, which is provided with a water collecting hole, a first connecting part and a second connecting part. The first connecting part and the second connecting part surround the water collecting hole. The first connecting part is connected to the end of the central tube, and the second connecting part is connected to the end of the filter element; a cup body, which is detachably connected to the cup cover, and the cup body is communicated with the water collecting segment through the water collecting hole.

[0015] According to another aspect of the present invention, a vehicle is provided, including: a fuel tank; a fuel filter, which is the above-mentioned fuel filter. The fuel filter further includes a housing, and the housing is sleeved outside the filter element and connected to the fuel tank; one end of the central tube far from the water collecting cup is connected to the housing through a connection cover, and the end of the water collecting cup abuts against the housing through an elastic member.

[0016] Applying the technical solution of the present invention, the central tube and the filter element are sleeved and matched. The oil body to be separated first passes through the filter element for impurity filtration, and then passes through the water-repellent section of the central tube for oil-water separation. The small-molecule oil enters the inside of the water-repellent section, and the large-molecule water enters the water collection cup after passing through the water collection section of the central tube; the heater is integrated inside the central tube, and the heat of the heater is transferred to the oil bodies on the dirty oil side and the clean oil side of the filter element through heat conduction, realizing the heating of the oil body, keeping the oil body around the filter element in a liquid state, avoiding solidification on the filter element and causing blockage of the filter element. In the above solution, the heater is integrated inside the central tube, which not only does not need to occupy the internal space of the engine compartment, but also can utilize the power supply of the fuel filter itself, simplifies the circuit layout of the heater, and thus reduces the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 shows a schematic structural diagram of a first embodiment of a fuel filter according to the present invention;

[0019] Figure 2 shows a schematic structural diagram of a second embodiment of a fuel filter according to the present invention;

[0020] Figure 3 shows a schematic structural diagram of a third embodiment of a fuel filter according to the present invention;

[0021] Figure 4 shows a schematic structural diagram of a fourth embodiment of a fuel filter according to the present invention.

[0022] Among them, the above-mentioned drawings include the following reference numerals:

[0023] 10, central tube;

[0024] 110, water-repellent section;

[0025] 111, water-repellent net; 112, water guide plate;

[0026] 120, water collection section; 121, first water collection section; 122, second water collection section; 1221, insertion part; 1222, clamping part; 123, hollow structure; 124, reinforcing rib; 125, first partition plate; 126, second partition plate;

[0027] 130, first component section;

[0028] 140, second component section;

[0029] 150, header pipe;

[0030] 20. Filter element;

[0031] 30. Water collecting cup;

[0032] 310. Cup cover; 311. Water collecting hole; 312. First connecting part; 313. Second connecting part; 320. Cup body; 330. Sealing ring;

[0033] 40. Heater;

[0034] 50. Housing;

[0035] 60. Fuel tank;

[0036] 70. Elastic part;

[0037] 80. Connecting cover. Detailed implementation mode

[0038] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0039] It should be noted that the terms used herein are only for describing the specific implementation mode and are not intended to limit the exemplary implementation mode according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "include" and / or "comprise" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or their combinations.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and do not have to be used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0041] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many different forms and should not be construed as being limited only to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present application is thorough and complete, and the concept of these exemplary embodiments is fully conveyed to those of ordinary skill in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and thus their description will be omitted.

[0042] Combined with Figures 1 to 4 As shown, according to a specific embodiment of the present application, a fuel filter is provided.

[0043] Specifically, the fuel filter includes: a central tube 10, a filter element 20, a water collection cup 30, and a heater 40. The central tube 10 is provided with a water-repellent section 110 and a water collection section 120. The filter element 20 is sleeved outside the central tube 10. The filter element 20 is respectively communicated with the water-repellent section 110 and the water collection section 120. The water collection cup 30 is connected to the bottom of the central tube 10. The water collection cup 30 is communicated with the water collection section 120. The heater 40 is disposed in at least one of the water-repellent section 110 and the water collection section 120. The heater 40 is used to heat the oil bodies on the dirty oil side and the clean oil side of the filter element 20.

[0044] In an embodiment of the present application, the central tube 10 and the filter element 20 are sleeved and matched. The oil body to be separated first passes through the filter element 20 for impurity filtration, and then through the water-repellent section 110 of the central tube 10 for oil-water separation. The small-molecule oil enters the inside of the water-repellent section 110, and the large-molecule water enters the water collection cup 30 after passing through the water collection section 120 of the central tube 10. The heater 40 is integrated inside the central tube 10, and the heat of the heater 40 is transferred to the oil bodies on the dirty oil side and the clean oil side of the filter element 20 through heat conduction, so as to heat the oil bodies, keep the oil bodies around the filter element 20 in a liquid state, and avoid solidifying on the filter element 20, causing blockage of the filter element 20. In the above solution, the heater 40 is integrated inside the central tube 10, which does not need to occupy the internal space of the engine compartment, and the power supply of the fuel filter itself can also be used to simplify the circuit layout of the heater 40, thereby reducing the manufacturing cost.

[0045] It should be noted that the fuel filter is vertically disposed inside or outside the fuel tank 60. The axis of the water-repellent section 110 is collinear with the axis of the water collection section 120. The water-repellent section 110 is located above the water collection section 120, so that the separated water flows into the water collection cup 30 under the action of gravity.

[0046] In an exemplary embodiment of the present application, the central tube 10 includes a first component segment 130 and a second component segment 140, and the first component segment 130 and the second component segment 140 are detachably connected. Among them, at least a water-repellent segment 110 is formed on the first component segment 130, and at least a part of a water-collecting segment 120 is formed on the second component segment 140. The heater 40 is disposed near the connection of the first component segment 130 and the second component segment 140.

[0047] In an embodiment of the present application, the central tube 10 is designed as a split structure. When installing and maintaining the heater 40, the second component segment 140 is removed to expose the installation position of the heater 40, which facilitates the installation and maintenance of the heater 40.

[0048] Exemplarily, the water-collecting segment 120 includes a first water-collecting segment 121 and a second water-collecting segment 122. The first component segment 130 is formed with a water-repellent segment 110 and a first water-collecting segment 121, and the second component segment 140 is formed with a second water-collecting segment 122. The first water-collecting segment 121 and the second water-collecting segment 122 are detachably connected, and an installation cavity is formed between the first water-collecting segment 121 and the second water-collecting segment 122. The heater 40 is disposed in the installation cavity.

[0049] In an embodiment of the present application, the heater 40 is disposed in the water-collecting segment 120. When installing and maintaining the heater 40, only the second water-collecting segment 122 needs to be removed; compared with disassembling the water-repellent segment 110, the splicing accuracy requirements for the first water-collecting segment 121 and the second water-collecting segment 122 are lower, and they only need to be connected together.

[0050] Further, a first partition plate 125 is provided between the first water-collecting segment 121 and the water-repellent segment 110, and a second partition plate 126 is provided at one end of the second water-collecting segment 122 close to the first water-collecting segment 121. An installation cavity is formed between the first partition plate 125 and the second partition plate 126.

[0051] The design of the first partition plate 125 and the second partition plate 126 enables the heater 40 to be connected or abutted against both the first partition plate 125 and the second partition plate 126 at the same time, so as to clamp and support the heater 40, avoid the shaking of the heater 40, and improve the installation stability of the heater 40.

[0052] Such as Figure 1 、 Figure 2As shown, the first component section 130 of the central tube 10 includes a water-repellent section 110 and a first water-collecting section 121. The water-repellent section 110 is vertically connected to the first water-collecting section 121. A first partition plate 125 is provided between the water-repellent section 110 and the first water-collecting section 121. The first partition plate 125 is a non-perforated plate, and the first partition plate 125 is used to prevent the pure oil separated in the water-repellent section 110 from flowing into the water-collecting section 120. One end of the second water-collecting section 122 close to the first water-collecting section 121 is provided with a second partition plate 126. The second partition plate 126 can be a perforated plate or a non-perforated plate, as long as it can support the heater 40.

[0053] As Figure 2 As shown, one end of the second water-collecting section 122 close to the first water-collecting section 121 is provided with a plug-in portion 1221. The radial dimension of the plug-in portion 1221 is smaller than the inner diameter of the first water-collecting section 121. The second water-collecting section 122 extends into the interior of the first water-collecting section 121 through the plug-in portion 1221. Among them, one end of the plug-in portion 1221 close to the first water-collecting section 121 is provided with a plurality of clamping portions 1222. The plurality of clamping portions 1222 are arranged at intervals around the circumference of the plug-in portion 1221. The clamping portion 1222 is a convex protrusion. One end of the first water-collecting section 121 close to the second water-collecting section 122 is provided with a plurality of hollow structures 123. The plurality of hollow structures 123 are arranged at intervals around the circumference of the first water-collecting section 121. The clamping portion 1222 or the plug-in portion 1221 can be radially deformed under an external force, so that the clamping portion 1222 is inserted into the hollow structure 123 of the first water-collecting section 121, thereby realizing the splicing of the first water-collecting section 121 and the second water-collecting section 122. When it is necessary to remove the second water-collecting section 122, the clamping portion 1222 or the plug-in portion 1221 of the second water-collecting section 122 can be squeezed through the hollow structure 123, so that the clamping portion 1222 is disengaged from the hollow structure 123, thereby realizing the disassembly of the first water-collecting section 121 and the second water-collecting section 122.

[0054] As an alternative embodiment, the water-repellent section 110 and the water-collecting section 120 are detachably connected. An installation cavity is formed between the end of the water-repellent section 110 and the middle of the water-collecting section 120. The heater 40 is arranged in the installation cavity.

[0055] Among them, a first partition plate 125 is provided between the end of the water-repellent section 110 and the water-collecting section 120. The first partition plate 125 is used to prevent the pure oil separated in the water-repellent section 110 from flowing into the water-collecting section 120. A second partition plate 126 is provided in the middle of the water-collecting section 120. The second partition plate 126 is used to support the heater 40.

[0056] In an exemplary embodiment of the present application, hollow structures 123 are formed on the water-collecting section 120. A reinforcing rib 124 is formed between adjacent hollow structures 123. The reinforcing rib 124 is arranged in a manner that fits the inner circle of the filter element 20.

[0057] In an embodiment of the present application, the hollow structure 123 on the water collection section 120 serves as a water collection port, allowing the separated water to enter the water collection section 120 and then enter the water collection cup 30 through the water collection section 120. The hollow structure 123 on the water collection section 120 also serves as a heat conduction port, enabling the heat dissipated by the heater 40 to be conducted to the periphery of the filter element 20 through the hollow structure 123. Additionally, the reinforcing ribs 124 on the water collection section 120 are used to fit with the inner circle of the filter element 20 to support the filter element 20, thereby enhancing the service life of the filter element 20.

[0058] As Figure 2 shown, the water collection section 120 includes a plurality of support rings. The plurality of support rings are arranged at intervals in the vertical direction, and adjacent support rings are connected by the reinforcing ribs 124, and a hollow structure 123 is formed between adjacent support rings. Among them, both the support rings and the reinforcing ribs 124 are in contact with the inner circle of the filter element 20 to support the filter element 20.

[0059] In an exemplary embodiment of the present application, a wire collecting tube 150 is provided inside the central tube 10. The wire collecting tube 150 extends along the axial direction of the central tube 10, and the wires of the heater 40 are arranged inside the wire collecting tube 150.

[0060] In the embodiment of the present application, the arrangement of the wire collecting tube 150 effectively isolates the wires of the heater 40 from other components of the fuel filter, especially the area in direct contact with the fuel, reducing the risk of electrical faults and improving the safety of the entire system. Additionally, in a humid environment, the insulation performance of the wires may be affected, while the wire collecting tube 150 effectively avoids such problems and ensures the stable operation of the heater 40.

[0061] In an exemplary embodiment of the present application, the water repellent section 110 includes: a water repellent net 111 and a water guide plate 112. There are a plurality of water guide plates 112. The plurality of water guide plates 112 are arranged outside the water repellent net 111, and an oil filtering port is formed between two adjacent water guide plates 112 distributed along the axial direction of the water repellent net 111. The filter element 20 is communicatively connected to the water repellent net 111 through the oil filtering port. Among them, the side of the water guide plate 112 facing the water collection section 120 is inclined.

[0062] In the embodiment of the present application, in addition to guiding the separated water to flow downward into the water collection section 120, the water guide plate 112 also serves to support the filter element 20. Especially when the filter element 20 is subjected to pressure fluctuations or vibrations, it prevents the filter element 20 from deforming or shifting, ensuring the axial and radial stability of the filter element 20, extending the service life of the filter element 20, and reducing the maintenance frequency.

[0063] As Figure 2As shown, the circumferential reinforcing ribs 124 of the first water collecting section 121 extend in the vertical direction. The first separation plate is connected between multiple reinforcing ribs 124. The water guide plate 112 is arranged between two adjacent reinforcing ribs 124. The multiple reinforcing ribs 124, the first separation plate and the water guide plate 112 enclose a receiving cavity. The water repellent net 111 is arranged in the receiving cavity, and the water repellent net 111 is connected to the reinforcing ribs 124, the first separation plate and the water guide plate 112.

[0064] As an alternative embodiment, the water guide plate 112 and the water repellent net 111 are integrally formed.

[0065] In an exemplary embodiment of the present application, the water collecting cup 30 includes: a cup lid 310 and a cup body 320. The cup lid 310 is provided with a water collecting hole 311, a first connecting portion 312 and a second connecting portion 313. The first connecting portion 312 and the second connecting portion 313 are arranged around the water collecting hole 311. The first connecting portion 312 is connected to the end of the central tube 10, and the second connecting portion 313 is connected to the end of the filter element 20. The cup body 320 is detachably connected to the cup lid 310, and the cup body 320 is communicated with the water collecting section 120 through the water collecting hole 311.

[0066] In an embodiment of the present application, the cup lid 310 is fixedly connected to the central tube 10, and the cup body 320 is detachably connected to the cup lid 310. When it is necessary to clean the water or impurities in the water collecting cup 30, only the cup body 320 needs to be disassembled, and there is no need to disassemble the entire fuel filter, which is convenient to operate.

[0067] As Figure 1 , Figure 3 As shown, the cup lid 310 and the cup body 320 are connected by screwing. A sealing ring 330 is provided between the cup lid 310 and the cup body 320 to further enhance the sealing performance of the water collecting cup 30. A water collecting hole 311 is provided at the midline of the top of the cup lid 310, dividing the top of the cup lid 310 into two connecting regions, namely a first connecting portion 312 and a second connecting portion 313. Both the first connecting portion 312 and the second connecting portion 313 are annular structures and are arranged around the water collecting hole 311. The second connecting portion 313 is located outside the first connecting portion 312, and the horizontal height of the second connecting portion 313 is higher than that of the first connecting portion 312. Among them, annular gaskets are provided at the outer edges of both the first connecting portion 312 and the second connecting portion 313. The end of the central tube 10 is bonded to the first connecting portion 312, and the outer peripheral surface of the central tube 10 is arranged in fit with the annular gasket at the outer edge of the first connecting portion 312. The end of the filter element 20 is bonded to the second connecting portion 313, and the outer peripheral surface of the filter element 20 is arranged in fit with the annular gasket at the outer edge of the second connecting portion 313.

[0068] Furthermore, the fuel filter further includes a housing 50. The housing 50 is sleeved outside the filter element 20, and the fuel filter is connected to the fuel tank 60 through the housing 50.

[0069] According to another specific embodiment of the present application, a control method for a fuel filter is provided, particularly relating to a control method for the heater 40.

[0070] Specifically, the control method for the heater 40 includes the following control steps:

[0071] Step S1: Obtain the operating conditions information of the engine, the ambient temperature, and the fuel temperature. Among them, the operating conditions information includes: engine start-up conditions, engine non-start-up conditions, and engine running conditions.

[0072] Utilize the in-vehicle sensor network to obtain the engine operating status in real time, including but not limited to engine speed, idle status, acceleration conditions, high-load conditions, etc. By analyzing these operating status data, determine the current operating conditions information of the engine.

[0073] Integrate a temperature sensor to monitor the real-time temperature of the environment where the vehicle is located and the fuel temperature inside the fuel tank 60. The temperature data is a key parameter for determining whether the heater 40 starts and the heating intensity. Especially under extreme low-temperature conditions, it has a direct impact on the start-up and operating temperature of the heater 40.

[0074] Step S2: Generate a heating strategy when the operating conditions information and the ambient temperature meet the preset conditions. Among them, the heating strategy is used to control the heater 40 to heat the oil bodies on the dirty oil side and the clean oil side of the filter element 20.

[0075] According to the obtained engine operating conditions information and the ambient temperature, the intelligent decision-making module will judge whether the preset conditions for the start-up of the heater 40 are met. For example, in a cold environment, if the engine is in the preheating stage before starting, or in the initial stage of engine operation, when the temperature sensor detects that the fuel temperature is lower than the preset threshold, the intelligent decision-making module will generate a heating strategy.

[0076] The heating strategy needs to consider the current operating conditions of the engine and the ambient temperature to determine the start-up time, heating temperature, and heating duration of the heater 40. For example, before the engine starts, the heater 40 may preheat at a lower power to avoid sudden thermal expansion of the fuel; during the engine operation, the heater 40 may dynamically adjust the heating intensity according to the fuel temperature to maintain the best efficiency of oil-water separation.

[0077] The heater 40 can adjust the heating intensity in real time. Under high-speed driving or high-load conditions, the fuel flow rate increases, and the heater 40 may need to increase the heating power to ensure the immediacy and thoroughness of oil-water separation; while under deceleration or idle conditions, the heater 40 reduces the power to save energy.

[0078] During the operation of the heater 40, the fuel temperature, the engine condition, and the oil-water separation effect are continuously monitored, and the sensor data is fed back to the intelligent decision-making module in real time to evaluate the effect of the heating strategy. If it is detected that the oil-water separation effect does not meet the expectation, the power of the heater 40 may be increased; or, after the fuel temperature rises, the heating intensity may be appropriately reduced to avoid energy waste caused by overheating.

[0079] According to another specific embodiment of the present application, a vehicle is provided, which includes: a fuel tank 60 and a fuel filter, and the fuel filter is the fuel filter in the above embodiment.

[0080] Specifically, the fuel filter includes: a central tube 10, a filter element 20, a water collection cup 30, a heater 40, and a housing 50. The central tube 10 is provided with a water repellent section 110 and a water collection section 120. The filter element 20 is sleeved outside the central tube 10, and the filter element 20 is respectively communicated with the water repellent section 110 and the water collection section 120. The water collection cup 30 is connected to the bottom of the central tube 10, and the water collection cup 30 is communicated with the water collection section 120. The heater 40 is arranged in at least one of the water repellent section 110 and the water collection section 120, and the heater 40 is used to heat the oil bodies on the dirty oil side and the clean oil side of the filter element 20. The housing 50 is sleeved outside the filter element 20, and the housing 50 is connected to the fuel tank 60. One end of the central tube 10 far from the water collection cup 30 is connected to the housing 50 through a connection cover 80, and the end of the water collection cup 30 abuts against the housing 50 through an elastic member 70.

[0081] In the embodiment of the present application, the central tube 10 and the filter element 20 are sleeved and matched. The oil body to be separated first passes through the filter element 20 for impurity filtration, and then passes through the water repellent section 110 of the central tube 10 for oil-water separation. The small molecule oil enters the inside of the water repellent section 110, and the large molecule water enters the water collection cup 30 after passing through the water collection section 120 of the central tube 10; the heater 40 is integrated inside the central tube 10, and the heat of the heater 40 is transferred to the oil bodies on the dirty oil side and the clean oil side of the filter element 20 through heat conduction to realize the heating of the oil bodies; the end of the water collection cup 30 abuts against the housing 50 through the elastic member 70, providing additional support for the water collection cup 30, reducing the damage to the internal structure of the filter caused by the change of the internal pressure of the fuel tank 60 or the vibration of the vehicle, and enhancing the overall stability and durability of the system. In the above solution, the heater 40 is integrated inside the central tube 10, which not only does not need to occupy the internal space of the engine compartment, but also can utilize the power supply of the fuel filter itself, simplifies the circuit layout of the heater 40, and thus reduces the manufacturing cost.

[0082] As Figure 4As shown in the figure, a connection cover 80 is provided at one end of the central pipe 10 away from the water collecting cup 30. The central pipe 10 is snap-fitted or bonded to the connection cover 80, and the central pipe 10 is screwed to the top of the housing 50 through the connection cover 80. A buffer gap is reserved between the bottom of the water collecting cup 30 and the inner bottom wall of the housing 50. The bottom of the water collecting cup 30 is connected to the inner bottom wall of the housing 50 through an elastic member 70. Among them, the elastic member 70 is a spring. While playing a buffering role, the elastic member 70 can also offset part of the axial force.

[0083] For the sake of easy description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial position relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the attached drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will be positioned as "below other devices or structures" or "under other devices or structures" afterwards. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations will be made for the spatial relative descriptions used here.

[0084] In addition to the above, it should also be noted that the "one embodiment", "another embodiment", "embodiment" etc. mentioned in this specification refer to the specific features, structures or characteristics described in connection with the embodiment being included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in connection with any one embodiment, it is intended that the implementation of such feature, structure or characteristic in combination with other embodiments also falls within the scope of the present invention.

[0085] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0086] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A fuel filter, characterized in that, Including: A central tube (10), the central tube (10) being provided with a water-repellent section (110) and a water-collecting section (120); A filter element (20), the filter element (20) being sleeved outside the central tube (10), the filter element (20) being communicated with the water-repellent section (110) and the water-collecting section (120) respectively; A water-collecting cup (30), the water-collecting cup (30) being connected to the bottom of the central tube (10), the water-collecting cup (30) being communicated with the water-collecting section (120); A heater (40), the heater (40) being arranged in at least one of the water-repellent section (110) and the water-collecting section (120), the heater (40) being used for heating the oil bodies on the dirty oil side and the clean oil side of the filter element (20).

2. The fuel filter according to claim 1, characterized in that, The central tube (10) includes a first component section (130) and a second component section (140), the first component section (130) and the second component section (140) being detachably connected. Wherein, at least the water-repellent section (110) is formed on the first component section (130), at least part of the water-collecting section (120) is formed on the second component section (140), and the heater (40) is arranged near the connection of the first component section (130) and the second component section (140).

3. The fuel filter according to claim 2, characterized in that, The water-collecting section (120) includes a first water-collecting section (121) and a second water-collecting section (122). The first component section (130) forms the water-repellent section (110) and the first water-collecting section (121), the second component section (140) forms the second water-collecting section (122), the first water-collecting section (121) and the second water-collecting section (122) are detachably connected, an installation cavity is formed between the first water-collecting section (121) and the second water-collecting section (122), and the heater (40) is arranged in the installation cavity.

4. The fuel filter according to claim 3, characterized in that, A first partition plate (125) is arranged between the first water-collecting section (121) and the water-repellent section (110), a second partition plate (126) is arranged at one end of the second water-collecting section (122) close to the first water-collecting section (121), and the installation cavity is formed between the first partition plate (125) and the second partition plate (126).

5. The fuel filter according to claim 2, wherein The water-repellent section (110) and the water-collecting section (120) are detachably connected, an installation cavity is formed between the end of the water-repellent section (110) and the middle of the water-collecting section (120), and the heater (40) is arranged in the installation cavity.

6. The fuel filter according to any one of claims 1-5, characterized in that, The water-collecting section is provided with a hollow structure (123), and a reinforcing rib (124) is formed between adjacent hollow structures (123), and the reinforcing rib (124) is arranged in a fitting manner with the inner circle of the filter element (20).

7. The fuel filter according to claim 1, characterized in that, A wire collecting tube (150) is arranged in the central tube (10), the wire collecting tube (150) extends along the axial direction of the central tube (10), and the wire of the heater (40) is arranged in the wire collecting tube (150).

8. The fuel filter according to claim 1, characterized in that, The water-repellent section (110) includes: A water-repellent net (111); A water guide plate (112), wherein there are a plurality of the water guide plates (112), the plurality of water guide plates (112) are arranged outside the water repellent net (111), and an oil filtering port is formed between two adjacent water guide plates (112) distributed along the axial direction of the water repellent net (111), and the filter element (20) is communicated with the water repellent net (111) through the oil filtering port. Wherein, one side of the water guide plate (112) facing the water collecting section (120) is inclinedly arranged.

9. The fuel filter according to claim 1, wherein The water collecting cup (30) includes: A cup cover (310), the cup cover (310) is provided with a water collecting hole (311), a first connecting portion (312) and a second connecting portion (313), the first connecting portion (312) and the second connecting portion (313) are arranged around the water collecting hole (311), the first connecting portion (312) is connected to the end of the central pipe (10), and the second connecting portion (313) is connected to the end of the filter element (20); A cup body (320), the cup body (320) is detachably connected to the cup cover (310), and the cup body (320) is communicated with the water collecting section (120) through the water collecting hole (311).

10. A vehicle, characterized in that, It includes: A fuel tank (60); A fuel filter, the fuel filter is the fuel filter according to any one of claims 1-9, the fuel filter further includes a housing (50), the housing (50) is sleeved outside the filter element (20), and the housing (50) is connected to the fuel tank (60); One end of the central pipe (10) far from the water collecting cup (30) is connected to the housing (50) through a connecting cover (80), and the end of the water collecting cup (30) abuts against the housing (50) through an elastic member (70).

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