Automobile fuel filter

Abstract

The invention relates to the technical field of vehicle fuel systems, and provides an automobile fuel filter which comprises a filter shell with an oil inlet pipe communicated with a freezing space, a quick freezing part with a settling space and a filter part arranged in a filter space. And the filtering shell comprises a first filtering membrane for isolating the freezing space from the filtering space. The first filtering membrane allows liquid to pass and prevents solid from passing, and the settling space is communicated with the oil inlet pipe. The quick freezing part is used for reducing the temperature of the fuel oil to be between the freezing point of the fuel oil and the freezing point of water, so that the water forms ice and the fuel oil is kept in a liquid state, the first filtering membrane is used for retaining the ice in the quick freezing part, and further the ice is settled into the settling space, so that the water in the fuel oil is separated out; and guiding the dewatered fuel oil into a filtering part so as to filter other impurities in the fuel oil. According to the automobile fuel filter provided by the invention, water in fuel can be removed, so that the water in the fuel is reduced.

Description

Technical Field

[0001] This application relates to the technical field of vehicle fuel systems, and particularly to an automotive fuel filter. Background Art

[0002] Fuel is one of the main energy sources for humans. Currently, the refining process cannot obtain pure fuel, and it is impossible to ensure that it is not affected by the outside world during transportation, so it contains water and some impurities. During the use of fuel, further impurity removal treatment is required for the fuel.

[0003] Automobiles are the tools that use the most fuel in our daily lives. During their use, fuel is purified through a fuel filter. Fuel usually contains different amounts of water, and the water content in some fuels exceeds the filtration limit of the filter membrane. However, there are currently two types of fuel filters on automobiles: gasoline filters and diesel filters. The gasoline filter does not have a special water removal structure designed for the water in gasoline, and the diesel filter is provided with a sedimentation part to drain the water contained in diesel; but in the case where the water content in gasoline exceeds the filtration limit of the filter membrane, it will cause water to enter the engine, thereby affecting the normal use of the engine. Because the diesel in the diesel filter is flowing, the sedimentation part cannot sediment and separate all the water, and it will also cause water to enter the engine, thereby affecting the normal use of the engine. Summary of the Invention

[0004] An embodiment of this application provides an automotive fuel filter, which can improve the technical problem in the related art that the moisture in the fuel cannot be completely removed.

[0005] An embodiment of this application provides an automotive fuel filter, including: A filtering housing having a freezing space, a filtering space, an inlet pipe and an outlet pipe. The inlet pipe is communicated with the freezing space, and the outlet pipe is communicated with the filtering space; the filtering housing includes a first filter membrane, and the first filter membrane is disposed between the freezing space and the filtering space and isolates the freezing space from the filtering space; the first filter membrane allows liquids to pass through and blocks solids from passing through; A rapid freezing part disposed in the freezing space. The rapid freezing part further has a sedimentation space, and the sedimentation space is communicated with the inlet pipe; and A filtering part disposed in the filtering space; Wherein, the rapid freezing part is used to reduce the temperature of the fuel to between the freezing point of the fuel and the freezing point of water, so that water forms ice and the fuel remains in a liquid state, and the first filter membrane is used to retain the ice in the rapid freezing part, so that the ice can settle into the sedimentation space, and thus the water in the fuel is separated.

[0006] In the embodiments of the present application, the above technical solutions have at least the following technical effects: The automotive fuel filter provided by the embodiments of the present application introduces fuel into the filtration housing through an inlet pipe, and by arranging a rapid freezing part in the freezing space, the moisture in the fuel in the rapid freezing part condenses into ice, while the fuel remains in a liquid state; compared with the fuel and its moisture both being in a liquid state, having the fuel and its moisture in two different states can reduce the difficulty of filtration, the cost of filtration, and increase the filtration efficiency. Since the first filter membrane allows liquids to pass through and blocks solids, the fuel enters the filtration space through the first filter membrane, and ice and impurities with a volume larger than the pore size of the first filter membrane are retained inside the rapid freezing part; since the density of ice is greater than that of the fuel, the ice can settle to the bottom of the settling space in the settling space, thereby preventing it from blocking the rapid freezing part; by lowering the temperature of the fuel, not only can the moisture in it condense into ice, but it can also promote the convergence of impurities and increase the volume of the impurities, and by arranging the filtration part in the filtration space, the filtration efficiency is increased. And when the moisture in the fuel is too high, it will quickly fill the settling space, thereby blocking the rapid freezing part, thus preventing water from entering the engine.

[0007] In some embodiments, an installation through-hole is further opened on the side of the filtration housing, and the installation through-hole connects the freezing space to the external space. The rapid freezing part includes: A tank body, arranged in the freezing space, and the tank body is provided with the settling space; A plurality of freezing pipes, arranged in the freezing space, the first filter membrane is arranged at one end of the plurality of freezing pipes facing the filtration space, and the first filter membrane isolates the plurality of freezing pipes from the filtration space. The other ends of the plurality of freezing pipes are connected to the settling space; and A semiconductor refrigeration device, electrically connected to the automotive power system; the semiconductor refrigeration device includes a refrigeration part and a heat dissipation part. The refrigeration part is arranged in the freezing space and is located below the plurality of freezing pipes; the heat dissipation part is arranged in the installation through-hole to isolate the freezing space from the external space; Wherein, the refrigeration part is used to lower the temperature in the plurality of freezing pipes so that the temperature in the plurality of freezing pipes is between the freezing point of the fuel and the freezing point of water, and the heat dissipation part is used to transfer the heat generated during the refrigeration process.

[0008] In some embodiments, the rapid freezing part further includes a thermally conductive insulating medium, and the thermally conductive insulating medium fills the remaining space of the freezing space.

[0009] In some embodiments, the fuel filter further includes a heating part, and the heating part includes: A first oil pipe, one end of the first oil pipe is connected to the oil outlet pipe; A heating tank body, which is connected to the other end of the first oil pipe, and the first oil pipe connects the oil outlet pipe with the internal space of the heating tank body; the internal space of the heating tank body is also connected to the fuel injection port of the automobile engine cylinder; and A heat conducting part, which is arranged on the surface of the heating tank body, and one end of the heat conducting part is connected to the heat dissipation part; Wherein, the heat conducting part is used to transfer part of the heat of the heat dissipation part to the heating tank body, so as to heat the temperature of the fuel in the heating tank body.

[0010] In some embodiments, the fuel filter further includes: A second oil pipe, one end of the second oil pipe is connected to the oil inlet pipe; and An oil storage tank body, which is connected to the other end of the second oil pipe, and the internal space of the oil storage tank body is connected to the freezing space through the second oil pipe.

[0011] In some embodiments, the oil inlet of the oil storage tank body is located at one end of the oil storage tank body; the oil outlet of the oil storage tank body is located at the other end of the oil storage tank body, and the position of the oil outlet of the oil storage tank body is higher than the position of the oil inlet of the oil storage tank body.

[0012] In some embodiments, the rapid freezing part is also provided with a drain hole, the drain hole is arranged on the bottom wall of the tank body, and the drain hole connects the sedimentation space with the external space.

[0013] In some embodiments, a first filter membrane is arranged at one end of the oil inlet pipe close to the sedimentation space to prevent ice from flowing back into the oil storage tank body.

[0014] In some embodiments, the drain hole includes a first hole section and a second hole section, the first hole section is communicated with the second hole section, and the aperture of the second hole section is larger than that of the first hole section, and the second hole section is located directly below the first hole section; the fuel filter further includes a liquid discharge part, and the liquid discharge part includes: A lifting cylinder, which is arranged in the second hole section; the lifting cylinder includes a cylinder body and a pushing part, the cylinder body has a hydraulic space, the pushing part is movably arranged in the hydraulic space, and the pushing part is in sealed contact with the side wall of the hydraulic space, and the pushing part is used to open or close the first hole section; and A first liquid pipe, one end of the first liquid pipe is connected to the second oil pipe, and the other end is connected to the hydraulic space.

[0015] In some embodiments, a second filter membrane is disposed at the first hole section, and the second filter membrane allows water to pass through and prevents fuel from passing through. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of an automotive fuel filter provided by an embodiment of the present application; Figure 2 It is a side view structural schematic diagram of an automotive fuel filter provided by an embodiment of the present application; Figure 3 is Figure 2 a cross-sectional view taken along the A-A direction in Figure 4 is Figure 3 a partial enlarged schematic diagram at B in

[0018] Among them, the reference numerals in the drawings are as follows: 100, fuel filter; 10, filtering housing; 101, freezing space; 102, filtering space; 103, installation through hole; 11, fuel inlet pipe; 12, fuel outlet pipe; 13, first filter membrane; 14, second filter membrane; 20, rapid freezing part; 200, sedimentation space; 21, freezing pipeline; 22, semiconductor refrigeration device; 221, refrigeration part; 222, heat dissipation part; 2220, heat dissipation channel; 23, thermally conductive insulating medium; 24, drain hole; 241, first hole section; 242, second hole section; 25, tank body; 30, filtering part; 40, heating part; 41, first oil delivery pipe; 42, heating tank body; 43, heat conducting part; 50, second oil delivery pipe; 51, oil storage tank body; 60, liquid discharge part; 61, lifting cylinder; 611, cylinder body; 612, pushing part; 613, hydraulic space; 62, first liquid pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, the following further details this application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and do not limit this application. The terms "comprising" and "having" and any variations thereof in the description and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0021] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality" means two or more, unless otherwise specifically defined.

[0024] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that three relationships can exist; for example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0025] It should be noted that in this application, words such as "in some embodiments", "exemplarily", and "for example" are used to give examples, illustrations, or explanations. Any embodiment or design described as "in some embodiments", "exemplarily", or "for example" in this application should not be construed as being more preferred or having more advantages than other embodiments or designs. Rather, the use of words such as "in some embodiments", "exemplarily", and "for example" is intended to present relevant concepts in a specific manner, meaning that the specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The appearance of the above words at various positions in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments that are mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0026] An automotive fuel filter is a device used to remove moisture and impurities from fuel.

[0027] The automotive fuel filters in the related art include gasoline fuel filters and diesel filters. The gasoline filter does not have a dedicated water removal structure designed for water in gasoline, and the diesel filter is provided with a sedimentation part to drain the water contained in diesel; however, in the case where the water content in gasoline exceeds the filtration limit of the filter membrane, it will cause water to enter the engine, thereby affecting the normal use of the engine. Because the diesel in the diesel filter is flowing, the sedimentation part cannot sediment and separate all the water, which will also cause water to enter the engine, thereby affecting the normal use of the engine.

[0028] Based on this, to improve the technical problem in the related art that the moisture in the fuel cannot be completely removed, the embodiments of this application provide the following solutions.

[0029] Please refer to Figures 1 to 3 together. The embodiments of this application provide an automotive fuel filter 100, which includes a filter housing 10, a rapid freezing part 20, and a filtering part 30; where: The filter housing 10 has a freezing space 101, a filtering space 102, an inlet pipe 11, and an outlet pipe 12. The inlet pipe 11 is communicated with the freezing space 101, and the outlet pipe 12 is communicated with the filtering space 102; the filter housing 10 includes a first filter membrane 13, and the first filter membrane 13 is disposed between the freezing space 101 and the filtering space 102 and isolates the freezing space 101 from the filtering space 102; the first filter membrane 13 is used to allow liquids to pass through and prevent solids from passing through.

[0030] The rapid freezing part 20 is disposed in the freezing space 101, and the rapid freezing part 20 has a sedimentation space 200, and the sedimentation space 200 is communicated with the inlet pipe 11.

[0031] The filtration section 30 is disposed within the filtration space 102.

[0032] Among them, the rapid freezing section 20 is used to reduce the temperature of the fuel to a value between the freezing point of the fuel and the freezing point of water, so that water forms ice and the fuel remains in a liquid state. And the first filter membrane 13 is used to retain the ice in the rapid freezing section 20, so that the ice can settle into the settling space 200, thereby separating the water in the fuel. Then, the water-removed fuel is introduced into the filtration section 30 to filter out other impurities in the fuel.

[0033] It can be understood that the filtration housing 10 is a device for connecting an automotive fuel pipe. For example, the filtration housing 10 can be a tank body having an inlet pipe 11 and an outlet pipe 12. Or, for another example, the filtration housing 10 can also be a pipe communicating with an automotive fuel pipeline.

[0034] The first filter membrane 13 is a device for preventing solids from entering the filtration section 30. For example, the first filter membrane 13 can be a polypropylene membrane or a polytetrafluoroethylene (PTFE) membrane with a pore size of 0.1 - 10 microns.

[0035] The rapid freezing section 20 is a device for reducing the temperature of the fuel. For example, the rapid freezing section 20 can be a component combining a semiconductor refrigeration device 22 and a plurality of refrigeration pipes 21.

[0036] The filtration section 30 is a component for fixing minute impurities. For example, the filtration section 30 can be a component combining a filter paper and a filter paper holder.

[0037] As can be seen from the above, the automotive fuel filter 100 provided by the embodiments of the present application introduces fuel into the filtering housing 10 through the fuel inlet pipe 11, and by arranging the rapid freezing part 20 in the freezing space 101, the moisture in the fuel in the rapid freezing part 20 condenses into ice, while the fuel remains in a liquid state; compared with setting the fuel and the moisture in it to two different states and having the fuel and the moisture in it both in a liquid state, being in two different states can reduce the difficulty of filtration, the cost of filtration, and increase the filtration efficiency. Since the first filter membrane 13 allows liquids to pass through and blocks solids, the fuel enters the filtering space 102 through the first filter membrane 13, and the ice and impurities with a volume larger than the pore diameter of the first filter membrane 13 are retained inside the rapid freezing part 20; since the density of ice is greater than that of the fuel, the ice can settle to the bottom of the settling space 200 in the settling space 200, thus preventing it from blocking the rapid freezing part 20; by lowering the temperature of the fuel, not only can the moisture in it condense into ice, but it can also promote the aggregation of impurities and thus increase the volume of the impurities, and by arranging the filtering part 30 in the filtering space 102, the filtration efficiency is further increased. And when the moisture in the fuel is too high, it will quickly fill the settling space 200, thus blocking the rapid freezing part 20, thereby preventing water from entering the engine.

[0038] In some embodiments, please also refer to Figures 1 to 3 , an installation through-hole 103 is further opened on the side of the filtering housing 10, and the installation through-hole 103 communicates the freezing space 101 with the external space. The rapid freezing part 20 includes a tank body 25, a plurality of freezing pipes 21, and a semiconductor refrigeration device 22; wherein: The tank body 25 is arranged in the freezing space 101, and the tank body 25 is provided with a settling space 200.

[0039] A plurality of freezing pipes 21 are arranged in the freezing space 101. The first filter membrane 13 is arranged at one end of the plurality of freezing pipes 21 facing the filtering space 102, and the first filter membrane 13 isolates the plurality of freezing pipes 21 from the filtering space 102. The other ends of the plurality of freezing pipes 21 communicate with the settling space 200.

[0040] The semiconductor refrigeration device 22 is electrically connected to the automotive power system; the semiconductor refrigeration device 22 includes a refrigeration part 221 and a heat dissipation part 222. The refrigeration part 221 is arranged in the freezing space 101 and is located below the plurality of freezing pipes 21; the heat dissipation part 222 is arranged in the installation through-hole 103 to isolate the freezing space 101 from the external space.

[0041] Wherein, the refrigeration part 221 is used to lower the temperature in the plurality of freezing pipes 21 so that the temperature in the plurality of freezing pipes 21 is between the freezing point of the fuel and the freezing point of water, and the heat dissipation part 222 is used to transfer the heat generated during the refrigeration process.

[0042] It can be understood that the refrigeration pipeline 21 is used to provide a cooling place for cooling the fuel. The semiconductor refrigeration device 22 is used to reduce the temperature inside the refrigeration pipeline 21; for example, the refrigeration part 221 can be a refrigeration chip. The heat dissipation part 222 can be a heat sink.

[0043] With such a setting, the fuel passes through the refrigeration space 101 through multiple refrigeration pipelines 21, so that the fuel can increase the contact area with the refrigeration space 101, thereby accelerating the cooling rate of the fuel, and enabling the moisture in the fuel to be quickly frozen to form ice. Compared with the device using compression refrigeration or absorption refrigeration, setting the refrigeration device of the rapid freezing part 20 as the semiconductor refrigeration device 22 can reduce the volume of the refrigeration device, and setting the heat dissipation part 222 of the semiconductor refrigeration device 22 in the external space can utilize the airflow formed during the driving of the vehicle to accelerate the heat dissipation rate of the semiconductor refrigeration device 22.

[0044] Optionally, in some embodiments, please refer to Figures 1 to 3 , the rapid freezing part 20 further includes a thermally conductive insulating medium 23, and the thermally conductive insulating medium 23 fills the remaining space of the refrigeration space 101.

[0045] It can be understood that the thermally conductive insulating medium 23 can be alumina ceramic or thermally conductive silica gel, etc.

[0046] With such a setting, compared with the scheme of directly arranging multiple refrigeration pipelines 21 in the refrigeration space 101 and directly connecting the refrigeration part 221 to the multiple refrigeration pipelines 21, the scheme of arranging the refrigeration part 221 in the refrigeration space 101 and filling the space between the refrigeration part 221 and the multiple refrigeration pipelines 21 with the thermally conductive insulating medium 23 can effectively prevent fuel ignition caused by electric leakage or short circuit of the refrigeration part 221. At the same time, the thermally conductive insulating medium 23 is a solid material, which can accelerate the heat conduction efficiency to more quickly reduce the temperature inside the multiple refrigeration pipelines 21; and the thermal expansion and contraction effect of the solid is much lower than that of liquids and gases, thereby being able to reduce the influence of the solid thermally conductive insulating medium 23 on the multiple refrigeration pipelines 21 and the filtration housing 10.

[0047] Optionally, please refer to Figure 1 , the fuel filter 100 further includes a heating part 40, and the heating part 40 includes a first oil delivery pipe 41, a heating tank 42 and a heat conducting part 43; wherein: One end of the first oil delivery pipe 41 communicates with the oil outlet pipe 12.

[0048] The heating tank 42 communicates with the other end of the first oil delivery pipe 41, and the first oil delivery pipe 41 connects the oil outlet pipe 12 with the internal space of the heating tank 42; the internal space of the heating tank 42 also communicates with the fuel injection port of the vehicle engine cylinder.

[0049] The heat conducting member 43 is disposed on the surface of the heating tank 42, and one end of the heat conducting member 43 is connected to the heat dissipation part 222.

[0050] Wherein, the heat conducting member 43 is used to transfer part of the heat of the heat dissipation part 222 to the heating tank 42, thereby heating the temperature of the fuel in the heating tank 42.

[0051] It can be understood that the first oil pipeline 41 is a pipe fitting for connecting the oil outlet pipe 12 and the heating tank 42; for example, the first oil pipeline 41 is set as a rigid pipe. The heating tank 42 is a device for raising the temperature of the fuel; for example, the heating tank 42 can be a cylindrical tank that is easy to conduct heat or a square tank that is easy to conduct heat, etc. The heat conducting member 43 is a component for transferring part of the heat of the heat dissipation part 222 into the heating tank 42; for example, the heat conducting member 43 can be a heat conducting connection block or a heat conducting connection column, etc.

[0052] With such a setting, since the previous fuel has undergone a temperature reduction operation, the temperature of the fuel cannot reach the temperature for entering the engine cylinder (especially diesel using the compression ignition method); for the above reasons, the heating tank 42 is provided to raise the temperature of the fuel. Compared with setting another heating component, this solution can use the heat of the heat dissipation part 222 to perform a heating operation on the fuel, and can also help increase the heat dissipation efficiency of the heat dissipation part 222.

[0053] Exemplarily, please refer to Figure 1 , the fuel filter 100 further includes a second oil pipeline 50 and an oil storage tank 51; wherein: One end of the second oil pipeline 50 is connected to the oil inlet pipe 11.

[0054] The oil storage tank 51 is connected to the other end of the second oil pipeline 50, and the internal space of the oil storage tank 51 is connected to the freezing space 101 through the second oil pipeline 50.

[0055] It can be understood that the second oil pipeline 50 is a component for connecting the oil storage tank 51 and the freezing space 101; for example, the second oil pipeline 50 can be a rigid pipe. The oil storage tank 51 is a component for storing a part of the fuel; for example, the oil storage tank 51 can be a circular oil storage tank or a square oil storage tank, etc.

[0056] With such a setting, a second fuel pipe 50 and a fuel storage tank body 51 are arranged in the direction opposite to the movement of the fuel in the freezing space 101, so as to be able to store a small amount of fuel, thereby providing a storage position for the fuel in the filter housing 10 after parking, and it can also ensure that the water content of the fuel entering the filtering part 30 before being reduced to the preset temperature in the plurality of freezing pipes 21 is less than the water content of the fuel in the fuel tank. In addition, if the water content of the newly added fuel in the fuel tank is greater than the filtering capacity of the filtering part 30, the fuel in the fuel storage tank body 51 can ensure that the fuel in the fuel tank is reduced to the preset temperature in the plurality of freezing pipes 21 before entering the plurality of freezing pipes 21. The second fuel pipe 50 is arranged as a rigid pipe to help the fuel storage tank body 51 be fixedly connected to the filter housing 10, thereby being able to reduce the fixing structure of the fuel storage tank body 51.

[0057] In some embodiments, refer to Figures 1 to 3 , the fuel inlet of the fuel storage tank body 51 is located at one end of the fuel storage tank body 51; the fuel outlet of the fuel storage tank body 51 is located at the other end of the fuel storage tank body 51, and the position of the fuel outlet of the fuel storage tank body 51 is higher than the position of the fuel inlet of the fuel storage tank body 51.

[0058] With such a setting, by arranging the fuel inlet of the fuel storage tank body 51 on the side close to the ground of the fuel outlet, so that the fuel entering the fuel storage tank body 51 is at one end of the fuel storage tank body 51 close to the ground, thereby pushing the fuel in the fuel storage tank body 51 to enter the plurality of freezing pipes 21 through the fuel outlet. And the fuel outlet of the fuel storage tank body 51 is below the inner wall at one end of the fuel storage tank body 51 away from the ground, so that the fuel in the filter housing 10 can be stored in the fuel storage tank body 51.

[0059] Optionally, in some embodiments, refer to Figures 1 to 4 , the rapid freezing part 20 is also provided with a drain hole 24, the drain hole 24 is arranged on the bottom wall of the tank body 25, and the drain hole 24 communicates the sedimentation space 200 with the external space.

[0060] With such a setting, when the vehicle is powered off, the ice temperature in the sedimentation space 200 rises to form water; by opening a drain hole 24 on the side of the sedimentation space 200 close to the ground, so that the water in the sedimentation space 200 can be discharged automatically in time.

[0061] Optionally, refer to Figures 1 to 4 , a first filter membrane 13 is arranged at one end of the fuel inlet pipe 11 close to the sedimentation space 200 to prevent the ice from flowing back into the fuel storage tank body 51.

[0062] In some embodiments, refer to Figures 1 to 4, the drain hole 24 includes a first hole section 241 and a second hole section 242. The first hole section 241 communicates with the second hole section 242, and the aperture of the second hole section 242 is larger than that of the first hole section 241. At the same time, the second hole section 242 is located directly below the first hole section 241. The fuel filter 100 further includes a liquid discharge part 60, and the liquid discharge part 60 includes a lifting cylinder 61 and a first liquid pipe 62. Among them: The lifting cylinder 61 is arranged in the second hole section 242. The lifting cylinder 61 includes a cylinder body 611 and a pushing member 612. The cylinder body 611 has a hydraulic space 613. The pushing member 612 is movably arranged in the hydraulic space 613, and the pushing member 612 is in sealing contact with the side wall of the hydraulic space 613. The pushing member 612 is used to open or close the first hole section 241; One end of the first liquid pipe 62 communicates with the second fuel pipe 50, and the other end communicates with the hydraulic space 613.

[0063] It can be understood that the lifting cylinder 61 is a device for opening or closing the drain hole 24; for example, the lifting cylinder 61 can be a cylindrical cylinder or a square cylinder, etc. The pushing member 612 is a device for opening or closing the first hole section 241; the pushing member 612 can be a cylindrical plug or a square plug, etc. The first liquid pipe 62 is a pipe fitting for connecting the second fuel pipe 50 and the hydraulic space 613.

[0064] With such a setting, when the vehicle is started, a part of the fuel first enters the hydraulic space 613 and pushes the pushing member 612 to close the drain hole 24. The above process can ensure that the drain hole 24 is closed before the fuel enters the filter housing 10, thereby preventing the fuel from leaking out of the drain hole 24. When the vehicle is turned off, the fuel in the filter housing 10 flows back to the oil storage tank 51 from the second fuel pipe 50 under the action of gravity. At the same time, the fuel in the hydraulic space 613 flows back to the oil storage tank 51 through the first liquid pipe 62 under the action of gravity, thereby opening the drain hole 24, and the temperature of the ice in the sedimentation space 200 rises, so as to drive the impurities to flow out of the drain hole 24 to the external space. The above process can automatically and timely discharge the water and impurities in the vehicle fuel filter 100, thereby increasing the service life of the vehicle fuel filter 100.

[0065] In some embodiments, please refer to Figures 1 to 3 , the second fuel pipe 50 is arranged as a Z-shaped rigid pipe. One end of the Z-shaped rigid pipe communicates with the fuel inlet pipe 11, and the other end of the Z-shaped rigid pipe communicates with the oil storage tank 51. One end of the second fuel pipe 50 communicates with the first liquid pipe 62, the other end of the second fuel pipe 50 communicates with the Z-shaped rigid pipe, and the connection part of the second fuel pipe 50 and the Z-shaped rigid pipe is located between the two ends of the Z-shaped rigid pipe.

[0066] With such a setting, by setting the second oil pipeline 50 as a Z-shaped rigid pipe, the connection between the reinforced oil storage tank body 51 and the filtration housing 10 is strengthened, and the Z-shaped rigid pipe can make the filtration housing 10 higher than the oil storage tank body 51, so that the fuel in the filtration housing 10 and the fuel in the hydraulic space 613 can flow back into the oil storage tank body 51.

[0067] In some embodiments, referring to Figures 1 to 4 , a second filter membrane 14 is provided at the first hole section 241, and the second filter membrane 14 allows water to pass through and prevents fuel from passing through.

[0068] It can be understood that since the molecular radius of fuel is greater than that of water, the radius of the filtration holes of the second filter membrane 14 is set between the molecular radius of fuel and the molecular radius of water molecules. For example, the second filter membrane 14 can be a polyvinyl alcohol membrane or a polyacrylonitrile membrane, etc.

[0069] With such a setting, the second filter membrane 14 is arranged above the lifting cylinder 61, so that the lifting cylinder 61 isolates the second filter membrane 14 from the ground, thereby preventing flying stones on the ground from damaging the second filter membrane 14. By arranging the second filter membrane 14 to isolate the sedimentation space 200 from the external space, fuel flow to the external space is prevented, thereby saving fuel.

[0070] In some embodiments, referring to Figures 1 to 4 , a plurality of refrigeration pipes 21 are arranged at an angle with the horizontal plane, and the horizontal plane at one end of the plurality of refrigeration pipes 21 communicating with the sedimentation space 200 is lower than the other end of the plurality of refrigeration pipes 21, so that the condensed ice cubes can enter the sedimentation space 200 with large-volume impurities and drain to the external space through the drain holes 24 following the water after the ice cubes melt.

[0071] In some embodiments, referring to Figures 1 to 4 , the heat dissipation part 222 has a plurality of heat dissipation channels 2220, and the direction of the heat dissipation channels 2220 is the same as the direction of vehicle travel.

[0072] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An automobile fuel filter, characterized in that: include: The filter housing has a freezing space, a filtering space, an oil inlet pipe and an oil outlet pipe, wherein the oil inlet pipe is connected to the freezing space, and the oil outlet pipe is connected to the filtering space; the filter housing includes a first filter membrane, which is arranged between the freezing space and the filtering space and isolates the freezing space from the filtering space; the first filter membrane is used to allow liquid to pass through and prevent solid from passing through; a rapid freezing section, disposed in the freezing space, the rapid freezing section having a sedimentation space, the sedimentation space being in communication with the oil inlet pipe; and A filter unit, disposed in the filter space; The quick freezing section is used to lower the temperature of the fuel to between the freezing point of the fuel and the freezing point of water, so that the water forms ice and the fuel remains in a liquid state, and the first filter membrane is used to retain the ice in the quick freezing section, so that the ice can settle in the settling space, thereby separating the water in the fuel; then the dehydrated fuel is introduced into the filtering section to filter out other impurities in the fuel.

2. The automotive fuel filter according to claim 1, characterized in that: The filter housing side is also provided with a mounting through hole, and the mounting through hole connects the freezing space to the external space, and the quick freezing part includes: A tank body is arranged in the freezing space, and the tank body is provided with the settling space; A plurality of freezing pipes are arranged in the freezing space, the first filter membrane is arranged at one end of the plurality of freezing pipes facing the filter space, and the first filter membrane isolates the plurality of freezing pipes from the filter space, and the other end of the plurality of freezing pipes is connected to the sedimentation space; and A semiconductor refrigeration device is electrically connected to the automobile power system; the semiconductor refrigeration device comprises a refrigeration part and a heat dissipation part, the refrigeration part is arranged in the refrigeration space, and the refrigeration part is located below the plurality of refrigeration pipes; the heat dissipation part is arranged in the installation through hole to isolate the refrigeration space from the external space; The refrigeration unit is used to lower the temperature in the plurality of freezing pipes so that the temperature in the plurality of freezing pipes is between the freezing point of fuel and the freezing point of water, and the heat dissipation unit is used to transfer the heat in the refrigeration process.

3. The automotive fuel filter according to claim 2, characterized in that: The rapid freezing part further includes a heat-conducting insulating medium, and the heat-conducting insulating medium fills the remaining space of the freezing space.

4. The automotive fuel filter according to claim 2, characterized in that: The fuel filter further includes a temperature raising unit, which includes: a first oil delivery pipe, one end of which is connected to the oil outlet pipe; A heating tank body is connected to the other end of the first oil delivery pipe, and the first oil delivery pipe connects the oil outlet pipe with the inner space of the heating tank body; the inner space of the heating tank body is also connected with the fuel injection port of the cylinder of the automobile engine; and A heat conducting member is arranged on the surface of the heating tank, and one end of the heat conducting member is connected to the heat dissipation part; The heat conducting member is used to transfer part of the heat of the heat dissipating part to the heating tank body, thereby heating the temperature of the fuel in the heating tank body.

5. The automotive fuel filter according to claim 2, characterized in that: The fuel filter also includes: a second oil delivery pipe, one end of which is connected to the oil inlet pipe; and The oil storage tank body is connected to the other end of the second oil delivery pipe, and the inner space of the oil storage tank body is communicated with the freezing space through the second oil delivery pipe.

6. The automotive fuel filter according to claim 5, characterized in that: The oil inlet of the oil storage tank body is located at one end of the oil storage tank body; the oil outlet of the oil storage tank body is located at the other end of the oil storage tank body, and the position of the oil outlet of the oil storage tank body is higher than the position of the oil inlet of the oil storage tank body.

7. The automotive fuel filter according to claim 5, characterized in that: The quick freezing part is also provided with a drainage hole, which is arranged on the bottom wall of the tank body, and the drainage hole connects the sedimentation space with the external space.

8. The automotive fuel filter according to claim 5, characterized in that: The first filter membrane is disposed at one end of the oil inlet pipe close to the sedimentation space to prevent ice from flowing back into the oil storage tank body.

9. The automotive fuel filter according to claim 7, characterized in that: The drainage hole includes a first hole segment and a second hole segment, the first hole segment is connected to the second hole segment, and the hole diameter of the second hole segment is larger than the hole diameter of the first hole segment, and the second hole segment is located directly below the first hole segment; the fuel filter also includes a drainage portion, and the drainage portion includes: a lifting cylinder disposed in the second hole section; the lifting cylinder comprises a cylinder body and a pusher, the cylinder body having a hydraulic space, the pusher being movably disposed in the hydraulic space, and the pusher being in sealing contact with a side wall of the hydraulic space, and the pusher being used to open or close the first hole section; and A first liquid pipe, one end of which is connected to the second oil delivery pipe, and the other end of which is connected to the hydraulic space.

10. The automotive fuel filter according to claim 9, characterized in that: A second filter membrane is disposed at the first hole section, and the second filter membrane allows water to pass through and prevents fuel from passing through.

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