CN112459935B - Fuel filter with high heating efficiency - Google Patents
Fuel filter with high heating efficiency Download PDFInfo
- Publication number
- CN112459935B CN112459935B CN202011525332.3A CN202011525332A CN112459935B CN 112459935 B CN112459935 B CN 112459935B CN 202011525332 A CN202011525332 A CN 202011525332A CN 112459935 B CN112459935 B CN 112459935B
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- China
- Prior art keywords
- heater
- oil
- base
- filter element
- element assembly
- Prior art date
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- 239000000446 fuel Substances 0.000 title claims abstract description 43
- 238000010438 heat treatment Methods 0.000 title claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 abstract description 110
- 239000000295 fuel oil Substances 0.000 abstract description 19
- 230000002209 hydrophobic effect Effects 0.000 description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 33
- 238000007789 sealing Methods 0.000 description 15
- 239000005871 repellent Substances 0.000 description 7
- 230000002940 repellent Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/30—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/125—Fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/24—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/34—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements by the filter structure, e.g. honeycomb, mesh or fibrous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/42—Installation or removal of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/44—Filters structurally associated with pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
- F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
- F02M37/48—Filters structurally associated with fuel valves
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a fuel filter with high heating efficiency.A shell is connected to a base, and a filter element assembly is arranged in the shell; the base is provided with an oil inlet pipe, an oil outlet pipe and a central vertical pipe, and the central vertical pipe is provided with a vertical first central channel; the upper end part of the filter element assembly is inserted into the central vertical pipe, and the first central channel is communicated with the oil purifying cavity; a heater is arranged in the base and above the filter element assembly, and comprises a heater seat, a heating plate and a heat conducting plate. The heater is positioned below the oil inlet pipe and the oil outlet pipe and is close to the oil inlet pipe and the oil outlet pipe, so that fuel oil can be heated at the first time after entering from the oil inlet pipe, a faster heating speed can be obtained in an environment with lower air temperature, the heating time is shorter, and the base is a metal piece and can also play a role in heat conduction, so that the heating efficiency is higher.
Description
Technical Field
The invention relates to the technical field of fuel filters for vehicles, in particular to a fuel filter with high heating efficiency.
Background
The fuel prefilter is arranged in an engine oil supply system and is used for filtering out impurities, water and other pollutants in fuel oil and then inputting the filtered impurities, water and other pollutants into the fuel pump and the fuel injector, so that the problems of excessive abrasion or blockage of important parts such as the fuel pump and the fuel injector are avoided, and the normal operation of the engine is ensured.
The existing fuel filter with the electric pump has the following problems:
At present, a heater is usually arranged between the base of some fuel filters and the top end of the filter element assembly to heat fuel oil in an oil inlet and outlet, the gap between the bottom surface of the heater and the top surface of the filter element assembly is usually smaller, namely, the oil passing gap between the bottom surface of the heater and the top surface of the filter element assembly is smaller, if the bottom surface of the heater or the top surface of the filter element assembly is deformed, the oil passing gap can be influenced, even deformed parts can be attached together, thus the passing resistance of the fuel oil can be increased, and the smoothness of the fuel oil flow is reduced.
Disclosure of Invention
The inventor aims at the defects of the prior fuel filter with the electric pump, and provides the fuel filter with reasonable structure and high heating efficiency, and ensures the smooth flow of fuel.
The technical scheme adopted by the invention is as follows:
the fuel filter with high heating efficiency is characterized in that a shell is connected to a base, a filter element assembly is arranged in the shell, a dirty oil cavity is formed in the shell and positioned on the outer side of the periphery of the filter element assembly, and the filter element assembly is internally provided with a clean oil cavity; the base is provided with an oil inlet pipe, an oil outlet pipe and a central vertical pipe, and the central vertical pipe is provided with a vertical first central channel; the upper end part of the filter element assembly is inserted into the central vertical pipe, and the first central channel is communicated with the oil purifying cavity; a heater is arranged in the base and above the filter element assembly, and comprises a heater seat, a heating plate and a heat conducting plate.
The heater is positioned below the oil inlet pipe and the oil outlet pipe and is close to the oil inlet pipe and the oil outlet pipe, so that fuel oil can be heated at the first time after entering from the oil inlet pipe, a faster heating speed can be obtained in an environment with lower air temperature, the heating time is shorter, and the base is a metal piece and can also play a role in heat conduction, so that the heating efficiency is higher.
As a further improvement of the above technical scheme:
The heater seat vertically stretches out downwards and has a round second turn-ups, has the clearance between the bottom surface of second turn-ups and the top surface of filter core assembly, as the fuel overflow passageway, and a plurality of notches are seted up to the lower tip of second turn-ups.
According to the invention, the plurality of notches are circumferentially arranged on the bottom surface of the second flanging to increase the overflow area of fuel oil, so that even if the heater or the filter element assembly deforms to enable the bottom surface of the second flanging to be attached to the top surface of the cover plate part, the fuel oil can flow through the plurality of notches, and the smoothness of fuel oil flow is ensured.
The heater is located in the oil inlet pipe and below the oil outlet pipe, and is close to the oil inlet pipe and the oil outlet pipe.
A gap is provided between the outer peripheral edge of the heater seat of the heater and the housing.
The clearance value between the peripheral edge of the heater seat and the shell is 0.5-1.5mm.
The gap between the peripheral edge of the heater seat and the shell is smaller, so that most of fuel oil entering from the fuel inlet pipe flows through the heater to be heated and then enters the dirty oil cavity of the shell, the effectiveness of heating the fuel oil is ensured, and the heating time is also more favorable for shortening.
The base is a metal piece.
The notches of the second flanging are uniformly distributed along the circumferential direction.
The center of the heater seat of the heater is provided with an inserting hole, and the inserting hole is sleeved on the periphery of the central vertical pipe of the base; the heater seat is provided with a plug connector in an extending mode, and the base is provided with a plug connector penetrating hole from which the plug connector penetrates.
The heating plate of the heater is positioned outside the inserting hole.
The upper and lower end surfaces of the heating plate are respectively provided with a heat conducting plate.
The beneficial effects of the invention are as follows:
the heater is positioned below the oil inlet pipe and the oil outlet pipe and is close to the oil inlet pipe and the oil outlet pipe, so that fuel oil can be heated at the first time after entering from the oil inlet pipe, a faster heating speed can be obtained in an environment with lower air temperature, the heating time is shorter, and the base is a metal piece and can also play a role in heat conduction, so that the heating efficiency is higher.
According to the invention, the plurality of notches are circumferentially arranged on the bottom surface of the second flanging to increase the overflow area of fuel oil, so that even if the heater or the filter element assembly deforms to enable the bottom surface of the second flanging to be attached to the top surface of the cover plate part, the fuel oil can flow through the plurality of notches, and the smoothness of fuel oil flow is ensured.
The gap between the peripheral edge of the heater seat and the shell is smaller, so that most of fuel oil entering from the fuel inlet pipe flows through the heater to be heated and then enters the dirty oil cavity of the shell, the effectiveness of heating the fuel oil is ensured, and the heating time is also more favorable for shortening.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a cross-sectional view A-A of fig. 1. At this time, the invention is in a normal working state, and the arrow in the figure shows the trend of the fuel.
Fig. 3 is a sectional view of fig. 1B-B, in which the present invention is in a normal operation, with the arrows showing the direction of the fuel.
Fig. 4 is the same as fig. 3, and the present invention is in an electric pump working state, and the arrow in the figure shows the trend of fuel.
Fig. 5 is an enlarged view of a portion C in fig. 4.
Fig. 6 is a perspective view of the base.
Fig. 7 is a longitudinal sectional view of fig. 6 taken parallel to the central axis of the oil feed pipe.
Fig. 8 is a perspective view of a plug of the check valve.
Fig. 9 is a perspective view of a cartridge assembly.
Fig. 10 is a cross-sectional view of fig. 9.
Fig. 11 is an enlarged view of a portion D in fig. 10.
Fig. 12 is a half cross-sectional view of a hydrophobic net.
Fig. 13 is an enlarged view of the portion E in fig. 12.
Fig. 14 is a cross-sectional view of the heater.
Fig. 15 is a perspective cutaway view of the housing.
In the figure: 1. a base; 10. a sleeve portion; 11. an oil inlet pipe; 12. an oil outlet pipe; 13. an electric pump channel; 131. an oil inlet cavity; 132. a first oil inlet; 133. an oil outlet cavity; 134. a first oil outlet; 14. a one-way valve passage; 141. a second oil inlet; 142. a second oil outlet; 143. a step surface; 15. a central vertical tube; 151. a first central passage; 152. a first collar; 153. a ring groove; 16. the plug connector penetrates out of the hole;
2. a housing; 21. a first rib; 22. second ribs; 23. an opening; 24. limit edges;
3. A filter element assembly; 31. a filter paper layer; 32. a skeleton; 321. a step; 322. a second convex ring; 33. a hydrophobic net; 331. a first flanging; 332. a groove; 333. a third convex ring; 34. an upper end cap; 341. a cover plate portion; 342. an insertion part; 343. a flow guiding pipe part; 344. a buckle; 345. a bump; 346. air holes; 35. a lower end cap; 351. drainage hole
4. A heater; 41. a heater base; 42. a second flanging; 43. a heating sheet; 44. a heat conductive sheet; 45. a notch; 46. a plug-in component; 47. a plug-in hole;
5. a water level sensor assembly; 6. an electric pump;
7. A one-way valve; 71. a plug; 711. a connection part; 712. a hollowed-out part; 713. a pressing part; 72. a valve plate; 73. a valve seat;
8. A seal ring;
100. Dirty oil chambers; 200. an oil purifying cavity; 300. a hydrophobic cavity; 400. a second central passage; 500. a water collecting cavity.
Detailed Description
The following describes specific embodiments of the present invention with reference to the drawings.
As shown in fig. 1,3 and 4, a base 1 of the invention is a metal piece, and an oil inlet pipe 11 and an oil outlet pipe 12 are arranged at the upper part of the base 1; the lower part of the base 1 is provided with a sleeve part 10, the sleeve part 10 is provided with internal threads, the sleeve part 10 is fixedly provided with a shell 2 through threaded fit, a filter element assembly 3 is arranged in the shell 2, a cavity positioned at the peripheral outer side of the filter element assembly 3 is a dirty oil cavity 100, a cavity positioned at the lower part of the filter element assembly 3 is a water collecting cavity 500, a clean oil cavity 200, a hydrophobic cavity 300 and a second central channel 400 are arranged in the filter element assembly 3, the hydrophobic cavity 300 is communicated with the water collecting cavity 500, the bottom of the shell 2 is provided with a water level sensor assembly 5, the sensing part of the water level sensor assembly 5 stretches into the water collecting cavity 500 to monitor the water level of the water collecting cavity 500, the bottom of the shell 2 is communicated with the water collecting cavity 500, and a drain valve (not shown in the figure) is opened after water in the water collecting cavity 500 is accumulated to a certain amount; a heater 4 is arranged in the base 1 and above the filter element assembly 3, and a plug-in piece 46 of the heater 4 penetrates out of the base 1.
As shown in fig. 2, one end of an oil inlet pipe 11 and one end of an oil outlet pipe 12 of the base 1 are open, and the other end of the oil inlet pipe and the oil outlet pipe are sealed by adopting a plug and a sealing piece; the open ends of the oil inlet pipe 11 and the oil outlet pipe 12 are positioned on opposite sides, and can also be positioned on the same side. As shown in fig. 7, a central vertical tube 15 is extended downward from the middle part of the base 1 and located inside the sleeve part 10, the central vertical tube 15 has a vertical first central channel 151, a first collar 152 is protruded from the inner peripheral wall surface of the middle part of the central vertical tube 15, and a first ring groove 153 is formed on the upper side of the first collar 152. As shown in fig. 7, a plug-in unit insertion hole 16 is provided in the base 1 on the outer side of the central vertical tube 15, and a plug-in unit 46 of the heater 4 is inserted from the plug-in unit insertion hole 16. as shown in fig. 3, an electric pump channel 13 with a closed inner side surface and a closed peripheral surface is horizontally arranged on the upper side of the oil inlet pipe 11 and the oil outlet pipe 12 on the base 1, the electric pump channel 13 is orthogonal to the oil inlet pipe 11 and the oil outlet pipe 12, an electric pump 6 is inserted into the electric pump channel 13, a sealing piece is arranged on the periphery of the middle part of the electric pump 6, and a cavity of the electric pump channel 13 positioned on the outer side of the electric pump 6 is divided into an oil inlet cavity 131 and an oil outlet cavity 133; on the base 1, a first oil inlet 132 is formed in the base through the oil inlet cavity 131 and the first central channel 151, and a first oil outlet 134 is formed in the base through the oil outlet cavity 133 and the oil outlet pipe 12. As shown in fig. 2, 6 and 7, a check valve channel 14 with a closed inner side surface and a closed peripheral surface is arranged on the base 1 and below the inclined side of the electric pump channel 13 and parallel to the electric pump channel 13, a second oil inlet 141 is arranged on the base 1 and is communicated with the check valve channel 14 and the first central channel 151, and a second oil outlet 142 is arranged on the base 1 and is communicated with the check valve channel 14 and the oil outlet pipe 12; As shown in fig. 2, the middle inner peripheral wall surface of the check valve passage 14 has a stepped surface 143, and the stepped surface 143 is located between the second oil inlet 141 and the second oil outlet 142. As shown in fig. 7, the check valve channel 14 is near the upper end of the first central channel 151 and is located on the inclined upper side of the first central channel 151, the check valve channel 14 and the first central channel 151 have a certain overlapping height in the longitudinal direction, and are directly communicated with the first oil inlet 132 through the inclined hole type second oil inlet 141, as shown in fig. 3 and 4, and further directly communicated with the first oil inlet 132 through sharing the first central channel 151, namely, the check valve channel 14 can be communicated with the first oil inlet 132 after being directly communicated with the first central channel 151 through an inclined hole (the second oil inlet 141), no additional channel is added to communicate the two, The number of channels in the base 1 is reduced, the use of sealing parts matched with the channels is reduced, potential sealing failure points are also reduced, and due to the reduction of the number of the channels, the processing technology difficulty of the base is reduced, the control difficulty of processing precision is reduced, and deviation is avoided. as shown in fig. 2 and 6, the check valve channel 14 is orthogonal to the oil outlet pipe 12 and is positioned at one side close to the sealing end of the oil outlet pipe 12, the channel main body of the check valve channel 14 is intersected with the channel main body of the oil outlet pipe 12, the check valve channel 14 directly forms a second oil outlet 142 through the channel at the part sharing the oil outlet pipe 12, namely, the oil outlet pipe 12 and the check valve channel 14 are directly formed by demolding of the orthogonal mold core on the base 1, so that the two are communicated, no additional channels are needed to be communicated, the number of channels in the base 1 is further reduced, the use of sealing parts matched with the channels is further reduced, and potential sealing failure points are reduced, The processing technology difficulty of the base is reduced, and the control difficulty of the processing precision is reduced.
As shown in fig. 2, the check valve 7 is disposed in the check valve channel 14 and outside the second oil inlet 141, the check valve 7 includes a plug 71, an umbrella-shaped valve plate 72 and a valve seat 73, sealing members are disposed between the plug 71 and the valve seat 73 and the inner wall surface of the check valve channel 14 for sealing, the stem portion of the valve plate 72 passes through the center of the valve seat 73 and is limited by a corresponding limiting structure, the umbrella surface portion of the valve plate 72 is disposed in a cavity on one side of the plug 71, and the plug 71 compresses the valve seat 73 on a step surface 143 of the check valve channel 14 for limiting. As shown in fig. 8, the plug 71 is sequentially provided with a connection part 711, a hollow part 712 and a pressing part 713 from outside to inside, the connection part 711 is provided with external threads, the circumferential wall surface of the hollow part 712 is a hollow surface and is provided with a plurality of through holes, the pressing part 713 comprises a plurality of tongue pieces extending outwards from the end surface of the hollow part 712, and the tongue pieces are uniformly arranged along the circumferential direction; as shown in fig. 2, the connection part 711 screws the plug 71 in the check valve channel 14 through threaded fit, the hollowed part 712 is correspondingly positioned at the second oil outlet 142, the oil outlet pipe 12 and the check valve channel 14 are conducted, and a plurality of tongue pieces of the compression part 713 are compressed on the end surface of the valve seat 73; the valve seat 73 is fixed through the mode that the plug 71 compresses tightly, only one step surface 143 which is used for axially limiting the plug 71 is required to be machined on the inner wall surface of the one-way valve channel 14, the machining process difficulty is reduced, when the valve seat 73 and the valve plate 72 are taken out for replacement only by screwing out the plug 71 during disassembly and assembly, the disassembly and assembly difficulty is low, simplicity and convenience are realized, the labor and the time required to be consumed are short, and the labor cost and the time cost are low.
As shown in fig. 9 and 10, a filter paper layer 31 of the filter element assembly 3 is sleeved on a framework 32, an upper end cover 34 and a lower end cover 35 are fixedly arranged at the upper end and the lower end of the filter paper layer 31 through bonding, a hydrophobic net 33 is inserted in the center of the framework 32, the top end of the hydrophobic net 33 is fixedly arranged on the upper end cover 34 through bonding, an inner cavity of the hydrophobic net 33 is an oil purifying cavity 200, and a cavity between the outer surface of the hydrophobic net 33 and the inner surface of the framework 32 is a hydrophobic cavity 300; the center of the lower end cap 35 is provided with a drain hole 351, and as shown in fig. 3 and 4, the drain hole 351 connects the water repellent chamber 300 with the water collecting chamber 500. As shown in fig. 10, the upper end cap 34 includes a circular cover plate portion 341 covering the upper end surface of the filter paper layer 31, wherein the center of the cover plate portion 341 is provided with an inserting portion 342 extending upward and a flow guiding tube portion 343 extending downward, the interior of the flow guiding tube portion 343 is a vertical second central channel 400, and the second central channel 400 axially penetrates through the inserting portion 342 and the flow guiding tube portion 343; The cover plate portion 341, the insertion portion 342, and the flow guide portion 343 of the upper end cap 34 are integrally formed, and in other embodiments, the cover plate portion 341, the insertion portion 342, and the flow guide portion 343 may be assembled by an assembling method after being processed independently. The flow guiding pipe part 343 extends into the hydrophobic net 33, the lower end part of the flow guiding pipe part 343 extends to a position close to the bottom surface of the hydrophobic net 33, and a certain distance is reserved between the bottom end surface of the flow guiding pipe part 343 and the bottom surface of the hydrophobic net 33, so that the second central channel 400 and the oil purifying cavity 200 are communicated. As shown in fig. 10 and 11, a plurality of buckles 344 are uniformly arranged on the upper part of the inserting part 342 along the circumferential direction, as shown in fig. 3,4 and 5, the inserting part 342 is inserted into the central vertical pipe 15 of the base 1, the second central channel 400 is communicated with the first central channel 151, and the buckles 344 of the inserting part 342, the first convex ring 152 and the first annular groove 153 of the central vertical pipe 15 form a clamping structure, so that the filter element assembly 3 is clamped on the base 1 through the clamping structure; A sealing ring 8 is arranged between the outer peripheral surface of the inserting part 342 and the inner peripheral surface of the central vertical pipe 15 and positioned below the clamping structure for sealing; during assembly, the filter element assembly 3 is clamped on the base 1, the shell 2 is screwed on the base 1, the assembly between the filter element assembly 3 and the base 1 is not required to be indirectly determined through the shell 2, namely, the assembly precision between the filter element assembly 3 and the base 1 is determined by the clamping structures of the filter element assembly 3 and the base 1, even if the assembly between the filter element assembly 3 and the shell 2 is out of tolerance, the assembly and the matching between the filter element assembly 3 and the base 1 are not affected, and after the filter element assembly 3 is clamped on the base 1, the filter element assembly 3 and the shell 2 are more easily centered, so that the assembly difficulty among the base 1, the shell 2 and the filter element assembly 3 is reduced; By adopting the assembly mode, when the filter element assembly 3 is disassembled and replaced, the shell 2 is unscrewed firstly, then the filter element assembly 3 is pulled down from the base 1, the disassembly difficulty is low, simplicity and convenience are realized, the labor and the time required to be consumed are short, and the labor cost and the time cost are low. As shown in fig. 9 and 10, the outer peripheral surface of the cover plate portion 341 of the upper end cover 34 is provided with a plurality of protruding blocks 345 protruding outwards along the radial direction, the protruding blocks 345 are uniformly arranged on the outer peripheral surface of the cover plate portion 341, and the protruding blocks 345 play a role in limiting the filter element assembly 3, so that the uniformity of gaps between the outer peripheral surface of the upper end cover 34 and each part of the inner peripheral surface of the housing 2 is ensured, and the smoothness of the flow of fuel in the dirty oil cavity 100 is further ensured; when the filter element assembly 3 is deformed by impact, the plurality of protruding blocks 345 also prevent the filter element assembly 3 from skewing in the shell 2, ensure that gaps for fuel flow still exist between the outer peripheral surface of the upper end cover 34 and each part of the inner peripheral surface of the shell 2, and ensure the smoothness of fuel flow. As shown in fig. 11, the upper end cover 34 is further provided with an air hole 346, the air hole 346 communicates the oil purifying cavity 200 with the second central channel 400, so that the air at a position lower than the air hole 346 can be discharged, and the electric pump 6 is more beneficial to extracting the fuel oil through the second central channel 400.
As shown in fig. 10 and 11, the upper end portion of the skeleton 32 is provided with a ring of steps 321 protruding inward in the radial direction, and the middle portion of the inner peripheral surface of the steps 321 is provided with a second convex ring 322 protruding inward in the radial direction. As shown in fig. 12, the water-repellent net 33 has a cylindrical shape with a closed bottom surface and an open top surface, and as shown in fig. 10, the water-repellent net 33 is positioned right above the water discharge hole 351 of the lower cap 35, and the closed bottom surface is spaced apart from the water discharge hole 351 by a certain distance. As shown in fig. 12 and 13, the upper port of the hydrophobic net 33 is turned outwards along the radial direction to form a horizontal first flanging 331, a plurality of grooves 332 are uniformly formed on the top surface of the hydrophobic net 33 along the circumferential direction, the plurality of grooves 332 transversely penetrate the top surface of the hydrophobic net 33 along the radial direction, as shown in fig. 11, the first flanging 331 is turned out horizontally, the annular contact area between the hydrophobic net 33 and the upper end cover 34 is increased, the adhesion between the hydrophobic net 33 and the upper end cover 34 is firmer, and the hydrophobic net 33 is not easy to fall off from the upper end cover 34; the top surface of the hydrophobic net 33 is provided with a plurality of grooves 332, when the adhesive is injected to compress the hydrophobic net 33 to the bottom surface of the upper end cover 34, the adhesive solution can be extruded into the grooves 332 and overflows outwards from the grooves 332, so that the pressing and flattening of the hydrophobic net 33 on the upper end cover 34 are facilitated, the firmness of adhesion is improved, the deflection of the hydrophobic net 33 is avoided, and the circumferential uniformity of the annular gap between the framework 32 and the hydrophobic net 33 is ensured. A third convex ring 333 is radially and outwards protruded on the upper end part of the hydrophobic net 33 and the peripheral surface below the first flange 331; as shown in fig. 10 and 11, the first flange 331 of the hydrophobic net 33 is overlapped on the step 321 of the skeleton 32, the second flange 322 of the skeleton 32 and the third flange 333 of the hydrophobic net 33 are mutually buckled and locked to form an interlocking structure, so that the hydrophobic net 33 is further axially limited, the hydrophobic net 33 is prevented from being skewed, the circumferential uniformity of the annular gap between the skeleton 32 and the hydrophobic net 33 is ensured, that is, the gap uniformity of each part of the hydrophobic cavity 300 is ensured, the small water drops in each part of the hydrophobic cavity 300 are favorably accumulated into large water drops, and drop downwards to flow into the water collecting cavity 500, and the oil-water separation efficiency of the hydrophobic net 33 is improved.
As shown in fig. 14, the plug 46 of the heater 4 extends upwards from the top surface of the heater seat 41, the center of the heater seat 41 is provided with a plug hole 47, the bottom of the heater seat 41 and the outer side of the plug hole 47 are provided with heating plates 43, and the upper and lower end surfaces of the heating plates 43 are respectively provided with heat conducting plates 44; the outer side edge of the heater seat 41 vertically extends downwards to form a circle of second flanging 42, and a plurality of notches 45 are uniformly formed in the lower end part of the second flanging 42 along the circumferential direction. As shown in fig. 3 and 4, the heater 4 is sleeved on the periphery of the central vertical pipe 15 of the base 1 through the insertion hole 47 in the center of the heater seat 41, and the heater 4 is positioned below the oil inlet pipe 11 and the oil outlet pipe 12 and close to the oil inlet pipe 11 and the oil outlet pipe 12, so that fuel oil can be heated at the first time after entering from the oil inlet pipe 11, a faster heating speed can be obtained in an environment with lower air temperature, the heating time is shorter, and the base 1 is a metal piece and can also play a role in heat conduction, so that the heating efficiency is higher; a certain gap is formed between the outer peripheral edge of the heater seat 41 of the heater 4 and the shell 2, the gap value is 0.5-1.5mm, and the gap is smaller, so that most of fuel entering from the fuel inlet pipe 11 flows through the heater 4 to be heated and then enters the dirty oil cavity 100 of the shell 2, the effectiveness of heating the fuel is ensured, and the heating time is also more favorable to be shortened; as shown in fig. 5, a certain gap is formed between the bottom surface of the second flange 42 of the heater seat 41 and the top surface of the cover plate portion 341 of the upper end cover 34 of the filter element assembly 3, and the plurality of notches 45 circumferentially arranged on the bottom surface of the second flange 42 are used as fuel flow passages, so that the fuel flow area is increased, and even if the heater 4 or the filter element assembly 3 is deformed, the bottom surface of the second flange 42 is attached to the top surface of the cover plate portion 341, the fuel can flow through the plurality of notches 45, so that the smoothness of the fuel flow is ensured.
As shown in fig. 15, the inner surface of the bottom of the housing 2 is provided with a plurality of radially arranged straight-plate-type first ribs 21 and a plurality of circumferentially arranged ring-shaped second ribs 22, the plurality of first ribs 21 are uniformly arranged on the inner surface of the bottom along the circumferential direction, the height of the first ribs 21 is larger than that of the second ribs 22, the plurality of first ribs 21 and the plurality of second ribs 22 can provide sufficient supporting strength for the bottom of the housing 2, the bottom of the housing 2 can be prevented from being deformed under the condition of long-term heavy work, the matching tightness between the housing 2 and corresponding sealing pieces is ensured, and the sealing performance of the fuel filter is ensured. As shown in fig. 3 and 4, the first ribs 21 and the second ribs 22 are located in the water collecting cavity 500, the openings 23 are formed in the second ribs 22 and between two adjacent first ribs 21, when the drain valve is opened to drain water, the water in the water collecting cavity 500 can flow from the openings 23 to the downstream and flow out from the drain valve, the water is prevented from being blocked by the second ribs 22 and deposited in the water collecting cavity 500, and the water is ensured to be discharged cleanly and thoroughly. As shown in fig. 15, the upper end of the housing 2 is provided with an external thread, and a limit edge 24 is provided below the external thread, as shown in fig. 3 and 4, after the housing 2 is screwed onto the sleeve portion 10 of the base 1, the top surface of the limit edge 24 abuts against the bottom surface of the sleeve portion 10 to limit the position, so that the height of the housing 2 extending into the base 1 is prevented from being too large, the heater 4 is prevented from being touched, the heater 4 is prevented from being offset, the tightness between the heater 4 and the base 1 is further affected, the deformation or even damage of the filter element assembly 3 during screwing of the housing 2 can be prevented, and in addition, the sealing components of the upper end cover 34 and the lower end cover 35 of the filter element assembly 3 can be ensured to be located in a sealing area.
When the invention is actually used, the invention has two working states:
(1) In a normal working state, as shown by arrows in fig. 2 and 3, fuel enters from an open end of the oil inlet pipe 11, is heated by the heater 4, enters the dirty oil cavity 100 in the shell 2, is filtered by the filter paper layer 31 of the filter element assembly 3, enters the water repellent cavity 300, is separated by the water repellent net 33, enters the oil purifying cavity 200, flows into the check valve channel 14 sequentially through the second central channel 400, the first central channel 151 and the second oil inlet 141, and pushes up an umbrella face of the valve plate 72 of the check valve 7, flows to the oil outlet pipe 12 through the hollowed-out part 712 and the second oil outlet 142, and flows out from the open end of the oil outlet pipe 12.
(2) When the electric pump is in a working state, at the moment, the one-way valve 7 is in a closed state under the suction action of the oil suction port of the electric pump 6, and the one-way valve channel 14 is disconnected; as shown by the arrow in fig. 4, the fuel enters from the open end of the oil inlet pipe 11, is heated by the heater 4, enters the dirty oil cavity 100 in the housing 2, is filtered by the filter paper layer 31 of the filter element assembly 3, enters the water repellent cavity 300, is separated by the water repellent net 33, enters the clean oil cavity 200, then sequentially passes through the second central channel 400, the first central channel 151 and the first oil inlet 132, flows into the oil inlet cavity 131 of the electric pump channel 13, flows through the electric pump 6, enters the oil outlet cavity 133 of the electric pump channel 13, flows from the first oil outlet 134 to the oil outlet pipe 12, and flows out from the open end of the oil outlet pipe 12.
The above description is illustrative of the invention and is not intended to be limiting, and the invention may be modified in any form without departing from the spirit of the invention.
Claims (7)
1. The fuel filter with high heating efficiency is characterized in that a shell (2) is connected to a base (1), a filter element assembly (3) is arranged in the shell (2), a dirty oil cavity (100) is formed in the shell (2) and positioned on the outer side of the periphery of the filter element assembly (3), and a clean oil cavity (200) is formed in the filter element assembly (3); the method is characterized in that: the base (1) is provided with an oil inlet pipe (11), an oil outlet pipe (12) and a central vertical pipe (15), and the central vertical pipe (15) is provided with a vertical first central channel (151); the upper end part of the filter element assembly (3) is inserted into the central vertical pipe (15), and the first central channel (151) is communicated with the oil purifying cavity (200);
A heater (4) is arranged in the base (1) and above the filter element assembly (3), the heater (4) is positioned below the oil inlet pipe (11) and the oil outlet pipe (12), and the heater (4) is close to the oil inlet pipe (11) and the oil outlet pipe (12); the heater (4) comprises a heater seat (41), a heating sheet (43) and a heat conducting sheet (44); a circle of second flanging (42) vertically extends downwards from the heater seat (41), a gap is formed between the bottom surface of the second flanging (42) and the top surface of the filter element assembly (3) and is used as a fuel overflow channel, and a plurality of notches (45) are formed in the lower end part of the second flanging (42);
The center of a heater seat (41) of the heater (4) is provided with an inserting hole (47), and the inserting hole (47) is sleeved on the periphery of a central vertical pipe (15) of the base (1); the heater seat (41) is extended with a plug connector (46), the base (1) is provided with a plug connector penetrating hole (16), and the plug connector (46) penetrates out from the plug connector penetrating hole (16).
2. A fuel filter with high heating efficiency as defined in claim 1, wherein: a gap is provided between the outer peripheral edge of the heater seat (41) of the heater (4) and the housing (2).
3. A fuel filter with high heating efficiency as defined in claim 2, wherein: the clearance between the peripheral edge of the heater seat (41) and the housing (2) is 0.5-1.5mm.
4. A fuel filter with high heating efficiency according to claim 1, the base (1) being a metal piece.
5. A fuel filter with high heating efficiency as defined in claim 1, wherein: the notches (45) of the second flange (42) are uniformly distributed in the circumferential direction.
6. A fuel filter with high heating efficiency as defined in claim 1, wherein: the heating plate (43) of the heater (4) is positioned outside the insertion hole (47).
7. A fuel filter with high heating efficiency as defined in claim 1, wherein: the upper and lower end surfaces of the heating sheet (43) are respectively provided with a heat conducting sheet (44).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011525332.3A CN112459935B (en) | 2020-12-22 | 2020-12-22 | Fuel filter with high heating efficiency |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011525332.3A CN112459935B (en) | 2020-12-22 | 2020-12-22 | Fuel filter with high heating efficiency |
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| CN112459935A CN112459935A (en) | 2021-03-09 |
| CN112459935B true CN112459935B (en) | 2024-08-02 |
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| CN213953779U (en) * | 2020-12-22 | 2021-08-13 | 无锡亿利环保科技有限公司 | Fuel filter with high heating efficiency |
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| US10245534B2 (en) * | 2015-05-28 | 2019-04-02 | Shaw Development, Llc | Filter inline heater |
| CN206111406U (en) * | 2016-09-29 | 2017-04-19 | 上海索菲玛汽车滤清器有限公司 | Heater and diesel oil filter |
| DE102017011050A1 (en) * | 2017-11-29 | 2019-05-29 | Daimler Ag | Valve device and fuel filter module |
| CN111561411B (en) * | 2020-05-27 | 2024-10-25 | 平原滤清器有限公司 | Fuel filter with eccentric heating structure |
| CN112096549A (en) * | 2020-10-19 | 2020-12-18 | 上海滨道滤清器有限公司 | Diesel filter |
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| CN213953779U (en) * | 2020-12-22 | 2021-08-13 | 无锡亿利环保科技有限公司 | Fuel filter with high heating efficiency |
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