An aluminum die-casting oil filter assembly

Abstract

This invention relates to an aluminum die-cast oil filter assembly, comprising an aluminum body formed by high-pressure die casting, a filter element mounting seat for installing a filter element, and a radiator mounting position for installing a radiator. A filter element is inserted into the filter element mounting seat, and a radiator is installed in the radiator mounting position. The radiator mounting position is characterized by having a radiator oil inlet, a radiator oil outlet, a radiator coolant inlet, and a radiator coolant outlet. The radiator oil inlet and outlet are connected by a first pipe. The body has an open slot on one side of the radiator mounting position that is not connected to the radiator oil inlet, outlet, coolant inlet, or outlet. The open slot has a reinforcing structure connected to the first pipe. The advantages of this invention are: the open slot reduces porosity during die casting, saves material, and provides good oil filtration and heat dissipation.

Description

Technical Field

[0001] This invention relates to the field of oil filters, and more specifically to an aluminum die-cast oil filter assembly. Background Technology

[0002] An oil filter is usually installed at the bottom of the engine of a gasoline-powered car. The oil filter can filter impurities such as dust, metal particles, carbon deposits and soot particles in the oil, thereby protecting the engine.

[0003] Existing oil filter assemblies typically use injection-molded plastic materials. Plastic materials have poor structural strength, therefore requiring multiple reinforcing ribs on their surface and metal inserts in the mounting holes for fastening. Furthermore, plastic materials have poor heat resistance; due to the high temperatures generated by the engine during operation, plastic oil filter assemblies are prone to deformation and aging, affecting their sealing performance and lifespan. Currently, filter assemblies using aluminum casting are emerging, such as the automotive oil filter assembly disclosed in invention patent CN215719024U. ： The main body (1) is formed by casting aluminum material. The upper part of the main body is provided with an oil filling hole (2), an engine oil outlet hole (3), a first engine oil return hole (4), a second engine oil return hole (5), and an engine fixing hole (6). The main body is fixed to the engine by fasteners passing through the engine fixing hole (6). The lower part of the main body is provided with a filter element mounting seat (7), a heat dissipation oil inlet hole (8), a first heat dissipation oil outlet hole (9), a second heat dissipation oil outlet hole (10), and a radiator fixing hole (11). A radiator is provided under the main body and is fixed to the radiator fixing hole (11) by fasteners.

[0004] The upper part of the heat dissipation oil inlet (8) is connected to the engine oil outlet (3), and the lower part of the heat dissipation oil inlet (8) is connected to the radiator inlet. The radiator outlet is connected to the first heat dissipation oil outlet (9) and the second heat dissipation oil outlet (10). The first heat dissipation oil outlet (9) is connected to the filter element mounting seat (7). The filter element is installed in the filter element mounting seat. The filter element mounting seat is connected to the first engine return oil hole (4). The second heat dissipation oil outlet (10) is connected to the second engine return oil hole (5). However, according to the working principle described in its instruction manual, when the engine is working, the engine oil in the engine enters the main body through the engine oil outlet, and then enters the radiator through the heat dissipation oil inlet below the main body. The radiator dissipates heat and cools the oil. After cooling, the oil flows back into the main body through the first heat dissipation oil outlet and the second heat dissipation oil outlet. The first heat dissipation oil outlet is connected to the filter element mounting seat.

[0005] Some engine oil enters the filter housing. After the oil passes through the filter element in the housing to remove impurities, it flows back into the engine through the first engine oil return hole. However, the oil flowing to the second cooling oil outlet hole flows directly back into the engine through the second engine oil return hole. It can be seen that due to its unreasonable structure, it can only filter a portion of the engine oil, while the other portion flows directly back into the engine. The filtration effect is poor. Furthermore, it relies solely on the cooling effect of the radiator to cool the fuel, which is also poor. Improvement is urgently needed.

[0006] For this purpose, the applicant previously filed a Chinese invention patent application for a radiator-mounted aluminum die-cast automotive oil filter assembly, application number 202210242084.4. This assembly comprises an aluminum body formed by high-pressure die casting, a filter element mounting seat for installing a filter element, and a radiator mounting position for installing a radiator. A filter element is inserted into the filter element mounting seat, and a radiator is installed in the radiator mounting position. A main body cover is installed on the filter element mounting seat to confine the filter element within the seat. A bypass valve communicating with the filter element is located at one end of the filter element near the main body cover. A connection is made at one end of the main body to... The filter element mounting base is connected to the main body oil inlet. The radiator mounting position has a radiator oil inlet, a radiator oil outlet, a radiator coolant inlet, and a radiator coolant outlet. The radiator oil inlet and the radiator oil outlet are connected. The main body also has a main body coolant inlet and at least one main body coolant outlet. The main body coolant inlet is connected to the radiator coolant inlet, and the radiator coolant outlet is connected to the main body coolant outlet. The main body also has a temperature sensor interface and a pressure sensor interface. A temperature sensor is installed in the temperature sensor interface, and a pressure sensor is installed in the pressure sensor interface.

[0007] The filter element installed in the filter element mounting bracket filters all the oil entering the main body of the oil filter assembly, ensuring the filtration effect. Furthermore, by introducing coolant from the engine cooling system into the filter, the oil passing through the radiator is cooled simultaneously, resulting in better cooling.

[0008] However, in actual production, it was found that because the filter body is made of die-cast aluminum, the aluminum material is relatively thick, and air holes are easily generated inside during the die-casting process. The presence of air holes can lead to leakage, which can cause the filter assembly to fail. On the other hand, the existing aluminum body has a complex internal structure, which is not conducive to improving production efficiency. It is necessary to improve this. Summary of the Invention

[0009] The technical problem to be solved by the present invention is to address the shortcomings of the prior art.

[0010] An oil filter assembly for an aluminum die-casting machine is provided.

[0011] To achieve the above objectives, the present invention provides the following technical solution: an aluminum die-casting oil filter assembly, comprising an aluminum body formed by high-pressure die casting, wherein the body is provided with a filter element mounting seat for installing a filter element and a radiator mounting position for installing a radiator, wherein a filter element is inserted into the filter element mounting seat and a radiator is installed in the radiator mounting position, characterized in that: the radiator mounting position is provided with a radiator oil inlet, a radiator oil outlet, a radiator coolant inlet, and a radiator coolant outlet, wherein the radiator oil inlet and the radiator oil outlet are connected by a first pipe, wherein the body is provided with an opening groove on one side of the radiator mounting position that is not connected to the radiator oil inlet, the radiator oil outlet, the radiator coolant inlet, and the radiator coolant outlet, wherein the opening groove is provided with a reinforcing structure connected to the first pipe.

[0012] Using the above technical solution, the existing aluminum base body has a filter element mounting seat on one side for installing the filter element, and a pipe for installing sensor components such as temperature sensors and pressure sensors on the other side. Although the radiator mounting position in the middle has radiator oil inlet, radiator oil outlet, radiator coolant inlet and radiator coolant outlet on both sides, the radiator mounting position only has a pipe connecting the radiator oil inlet and radiator oil outlet. Therefore, the material on both sides of the pipe is relatively thick, which easily generates pores during the casting process, thereby causing leakage and resulting in a low product yield. The present invention reduces the material thickness, avoids the formation of pores, and improves the yield by opening an opening groove at this position that is evenly distributed and connected to the radiator oil inlet, radiator oil outlet, radiator coolant inlet and radiator coolant outlet.

[0013] The aforementioned aluminum die-casting machine oil filter assembly can be further configured such that the reinforcing structure includes at least one reinforcing inclined surface disposed within the opening groove, one end of which is connected to the first pipe and the other end of which is connected to the interior of the body.

[0014] By adopting the above technical solution, the strength of the first pipe is improved by setting a reinforcing slope.

[0015] The aforementioned aluminum die-casting machine oil filter assembly can be further configured as follows: the main body has a main body oil inlet communicating with the interior of the filter element mounting seat at the lower part of the filter element mounting seat; the main body has a main body oil outlet communicating with the radiator oil outlet at the lower part of the radiator mounting position; the filter element mounting seat has a filter element mounting seat oil outlet communicating with the radiator oil inlet; a flow divider valve is installed at the radiator oil inlet; a temperature sensor interface and a pressure sensor interface communicating with the radiator oil outlet are respectively opened at the other end of the main body opposite to the filter element mounting seat; a temperature sensor is installed at the temperature sensor interface and a pressure sensor is installed at the pressure sensor interface; a main body coolant inlet communicating with the radiator coolant inlet is also provided at the end of the main body where the pressure sensor is installed; and at least one main body coolant outlet communicating with the radiator coolant outlet is provided at the lower part of the main body.

[0016] Using the above technical solution, the working principle of this invention is as follows: Engine oil exits from the main body inlet and enters the filter element mounting base, where it is filtered by the filter element. The filtered oil flows from the filter element mounting base outlet to the radiator inlet. Most of the oil enters the radiator from the inlet for cooling. The cooled oil flows to the radiator outlet, while a small portion flows from the inlet through a diverter valve and a first pipe to the radiator outlet. Most of the oil flowing to the radiator outlet flows into the engine through the main body outlet, while a small portion flows to the temperature sensor interface, the temperature sensor interior, the pressure sensor interface, and the pressure sensor. Internally, the engine cooling system's coolant enters through the main coolant inlet, flows to the radiator coolant inlet, then into the radiator, and finally exits through the radiator coolant outlet. The coolant flowing to the radiator outlet returns to the engine cooling system through the connected main coolant outlet. A diverter valve at the radiator oil outlet ensures that most of the engine oil flows into the radiator for cooling, while a small portion flows into the temperature and pressure sensors to monitor oil temperature and pressure. This portion of oil, after being monitored, flows back into the engine through the main coolant outlet. See [link to relevant documentation]. Figure 6 The diagram shown is an exploded view of the coolant outlet portion of a certain type of existing oil filter assembly with a plastic body. It includes a main body a, a first mounting part b, and a second mounting part c. In the prior art, the main coolant inlet is formed by splicing two external plastic parts. However, after a period of use, the plastic parts and seals of this structure are prone to aging and leakage. In contrast, the coolant outlet of this invention is integrally formed with the main body, which eliminates the defects of the existing structure, improves the sealing performance, and reduces the number of leakage points.

[0017] The aforementioned aluminum die-casting oil filter assembly can be further configured as follows: a main body cover is installed on the filter element mounting base; a central tube column receiving cavity for inserting the filter element is provided in the middle of the filter element mounting base; the end of the central tube column receiving cavity away from the main body cover is connected to the oil outlet of the filter element mounting base; an isolation ring extending towards the main body cover is provided in the central tube column receiving cavity; the position of the main body oil inlet is lower than the isolation ring; a main body oil drain port connected to the central tube column receiving cavity is provided on one side of the main body; the end of the central tube column located in the central tube column receiving cavity forms a circumferentially sealed oil outlet end; and an oil drain assembly is provided between the isolation ring and the oil outlet end, which causes the central tube column to disengage from the central tube column receiving cavity when the main body cover is opened, thereby allowing the oil to flow out from the main body oil drain port.

[0018] Using the above technical solution, after assembly, one end of the central tube is inserted into the central tube housing cavity. Under normal working conditions, the oil entering through the main body oil inlet passes through the filter element and the central tube and enters the oil outlet of the central tube, exiting through the oil outlet of the filter element mounting seat. When it is necessary to change the oil or filter element, open the main body cover and use the oil drain assembly to pop up the central tube, so that the oil outlet of the central tube is separated from the central tube housing cavity. At this time, the oil will exit from the main body oil drain port, realizing quick replacement of oil and filter elements without oil splashing.

[0019] The aforementioned aluminum cast oil filter assembly can be further configured such that: the oil draining component includes a return spring; the central tube column is provided with a spring mounting seat near the isolation ring for the spring to abut against; the spring is located outside the isolation ring with one end abutting against the filter element mounting seat and the other end abutting against the spring mounting seat; and the spring mounting seat is provided with a limiting ring to restrict the spring from disengaging.

[0020] By adopting the above technical solution, a spring is set outside the isolation ring, with one end contacting the central tube and the other end contacting the inside of the filter element mounting seat. During installation, since the oil outlet end of the central tube column needs to be installed into the central tube column receiving cavity, the spring is compressed and held in a compressed state by the main body cover. When the main body cover is removed, under the action of the spring's restoring force, the oil outlet end is ejected from the central tube column receiving cavity, and the engine oil in the main body flows back into the engine from the main body drain port connected to the central tube column receiving cavity. This not only drains the oil quickly but also prevents oil from splashing.

[0021] The aforementioned aluminum die-casting machine oil filter assembly can be further configured such that: at least one set of barbed plates is provided on the outside of the oil outlet end, which abut against the inner wall of the central tube column receiving cavity.

[0022] The above technical solution uses a barbed plate that acts as a guide during the installation of the oil outlet end and keeps it stably located in the central tubing cavity, thus improving stability.

[0023] The beneficial effects of this invention are: the main body has an open groove, which reduces the formation of air holes during the die casting process and saves materials; the oil filtration effect is good and heat dissipation is efficient.

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the exploded structure according to an embodiment of the present invention.

[0026] Figure 2 This is a three-dimensional schematic diagram from an upward perspective of an embodiment of the present invention.

[0027] Figure 3 This is a schematic diagram of the main structure of an embodiment of the present invention.

[0028] Figure 4 This is a top view of the main body and filter element of the present invention after installation.

[0029] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of section AA.

[0030] Figure 6 This is a schematic diagram of the exploded structure of the main coolant outlet of an oil filter in the prior art. Detailed Implementation

[0031] See Figures 1-6As shown: An aluminum die-cast oil filter assembly includes an aluminum body 5 formed by high-pressure die casting. The body 5 has a filter element mounting seat A8 for installing a filter element 3 and a radiator mounting position 52 for installing a radiator 8. A filter element 3 is inserted into the filter element mounting seat A8. The filter element 3 includes filter paper and a central tube 4 disposed at the center of the filter paper. A radiator 8 is installed in the radiator mounting position 52. The radiator mounting position 52 has a radiator oil inlet A2, a radiator oil outlet A3, a radiator coolant inlet B2, and a radiator coolant outlet B3. The radiator oil inlet A2 and the radiator oil outlet A3 are connected by a first pipe 53. The body 5 has a section on one side of the radiator mounting position 52 that connects to the radiator oil inlet A2 and the radiator oil outlet. A3, an opening groove 54 is formed where neither the radiator coolant inlet B2 nor the radiator coolant outlet B3 is connected. The opening groove 54 contains a reinforcing structure connected to the first pipe 53. The reinforcing structure includes at least one reinforcing inclined surface 541 within the opening groove 54, one end of which connects to the first pipe 53 and the other end to the interior of the main body 5. The main body 5 has a main body oil inlet A1 at the lower part of the filter element mounting base A8, communicating with the interior of the filter element mounting base A8. The main body A8 has a main body oil outlet A6 at the lower part of the radiator mounting position 52, communicating with the radiator oil outlet A3. The filter element mounting base A8 has a filter element mounting base oil outlet A81 communicating with the radiator oil inlet A2. A diverter valve 12 is installed at the radiator oil inlet A2. The main body 5 is positioned opposite to the filter element mounting base A2. The other end of the filter element mounting base A8 is provided with a temperature sensor interface A4 and a pressure sensor interface A5, which are respectively connected to the radiator oil outlet A3. A temperature sensor 13 is installed at the temperature sensor interface A4, and a pressure sensor 14 is installed at the pressure sensor interface A5. The end of the main body 5 where the pressure sensor 14 is installed is also provided with a main body coolant inlet B1, which is connected to the radiator coolant inlet B2. The main body 5 has a main body coolant first outlet B5 and a main body coolant second outlet B6, which are connected to the radiator coolant outlet B3, at the lower part of the filter element mounting base A8. A main body cover 1 is installed on the filter element mounting base A8. A central tube column receiving cavity A82 for inserting the central tube column 4 of the filter element 3 is provided in the middle of the filter element mounting base A8. A bypass valve 2 is installed at one end near the main cover 1. The end of the central column receiving cavity A82 away from the main cover 1 is connected to the oil outlet A81 of the filter element mounting seat. The central column receiving cavity A82 is provided with an isolation ring A83 extending towards the main cover 1. The main body oil inlet A1 is located below the isolation ring A83. One side of the main body 5 is provided with a main body oil drain port A7 connected to the central column receiving cavity A82. One end of the central column 4 located in the central column receiving cavity A82 forms a circumferentially sealed oil outlet end 41. Between the isolation ring A82 and the oil outlet end 41, there is an oil drain assembly that causes the central column 4 to disengage from the central column receiving cavity A82 when the main cover 1 is opened, so that the engine oil flows out from the main body oil drain port A7. The oil drain assembly includes a return spring 24.The central tubing 4 is provided with a spring mounting seat A11 near the isolation ring A83 for the spring 24 to abut. The spring 24 is sleeved outside the isolation ring A83, with one end abutting the bottom of the filter element mounting seat A8 and the other end abutting the spring mounting seat A11. The spring mounting seat A11 is provided with a limiting ring A101 to prevent the spring 24 from disengaging. The oil outlet 41 is provided with at least one set of barbed plates A9 that abut against the inner wall of the central tubing cavity A82. The main body coolant first outlet B5 and main body coolant second outlet B6 are located at the processing main body coolant first outlet B5 and main body coolant second outlet B6. A first process hole and a second process hole, referred to as the first plug port A12 and the second plug port A13, are formed on the main body 5. The first plug 6 and the second plug 19 respectively seal the first plug port A12 and the second plug port A13. To prevent leakage, the first plug 6 is provided with a first plug seal 7, and the second plug 20 is provided with a second seal 19. The pressure sensor 14 is installed at the pressure sensor interface A5 through the pressure sensor plug 28, and a pressure sensor seal is provided at the connection between the two. 27. The main body 5 has threaded holes for the radiator 8 to be installed in the radiator mounting position 52. The radiator 8 is installed in the radiator mounting position 52 by radiator fixing bolts 9. The main body is installed on the engine by fixing bolts 10. A main body fixing bolt seal 11 is provided at the connection between the main body fixing bolts 10 and the main body 5. Similarly, to ensure sealing performance, a first radiator seal 25 is provided at the connection between the radiator 8 and the main body 5 at the radiator oil inlet A2 and the radiator coolant inlet B2, respectively. A second radiator seal 26 is provided at the radiator oil outlet A3 and the radiator coolant outlet B3, respectively. A main body oil inlet seal 15 is provided at the main body oil inlet A1, a main body oil outlet seal 18 is installed at the main body oil outlet A6, and a main body oil drain seal 16 is installed at the main body drain outlet A7, ensuring that there will be no leakage after these three points of the main body are connected to the engine. Similarly, a main body coolant outlet seal 17 is installed at the main body coolant outlet first outlet B5 and the main body coolant outlet second outlet B6.

Claims

1. An aluminum die-cast oil filter assembly, comprising an aluminum body formed by high-pressure die casting, wherein the body is provided with a filter element mounting seat for installing a filter element and a radiator mounting position for installing a radiator, wherein a filter element is inserted into the filter element mounting seat and a radiator is installed in the radiator mounting position, characterized in that: The radiator mounting position has a radiator oil inlet, a radiator oil outlet, a radiator coolant inlet, and a radiator coolant outlet. The radiator oil inlet and outlet are connected by a first pipe. The main body has an opening groove on one side of the radiator mounting position that is not connected to the radiator oil inlet, outlet, coolant inlet, or outlet. The opening groove contains a reinforcing structure connected to the first pipe. The reinforcing structure includes at least one reinforcing inclined surface within the opening groove, one end of which connects to the first pipe and the other end to the interior of the main body. The main body has a main body oil inlet at the lower part of the filter element mounting base, communicating with the interior of the filter element mounting base. The lower part of the radiator mounting position is provided with a main body oil outlet communicating with the radiator oil outlet. The filter element mounting base is provided with a filter element mounting base oil outlet communicating with the radiator oil inlet. A diverter valve is installed at the radiator oil inlet. The other end of the main body opposite to the filter element mounting base is provided with a temperature sensor interface and a pressure sensor interface communicating with the radiator oil outlet respectively. A temperature sensor is installed at the temperature sensor interface and a pressure sensor is installed at the pressure sensor interface. The end of the main body where the pressure sensor is installed is also provided with a main body coolant inlet communicating with the radiator coolant inlet. The main body is provided with at least one main body coolant outlet communicating with the radiator coolant outlet at the lower part of the filter element mounting base.

2. The aluminum die-casting machine oil filter assembly according to claim 1, characterized in that: A main body cover is installed on the filter element mounting base. A central tube column receiving cavity for inserting the filter element is provided in the middle of the filter element mounting base. The end of the central tube column receiving cavity away from the main body cover is connected to the oil outlet of the filter element mounting base. An isolation ring extending towards the main body cover is provided in the central tube column receiving cavity. The position of the main body oil inlet is lower than the isolation ring. A main body oil drain port connected to the central tube column receiving cavity is provided on one side of the main body. The end of the central tube column located in the central tube column receiving cavity forms a circumferentially sealed oil outlet end. An oil drain assembly is provided between the isolation ring and the oil outlet end, which causes the central tube column to disengage from the central tube column receiving cavity when the main body cover is opened, thereby allowing the engine oil to flow out from the main body oil drain port.

3. The aluminum die-casting machine oil filter assembly according to claim 2, characterized in that: The oil drain assembly includes a return spring. The central tube column is provided with a spring mounting seat near the isolation ring for the spring to abut against. The spring is sleeved outside the isolation ring, with one end abutting against the filter element mounting seat and the other end abutting against the spring mounting seat. The spring mounting seat is provided with a limiting ring to restrict the spring from disengaging.

4. The aluminum die-casting machine oil filter assembly according to claim 3, characterized in that: The oil outlet end is provided with at least one set of barbed plates that abut against the inner wall of the central tubing cavity.

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