CN217002008U

CN217002008U - Integrated oil filter

Info

Publication number: CN217002008U
Application number: CN202123444177.5U
Authority: CN
Inventors: 陈进
Original assignee: Mann and Hummel Filter Shanghai Co Ltd
Current assignee: Mann and Hummel Filter Shanghai Co Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-07-19
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to an integrated oil filter, which comprises a filter shell, a cooling system and a cooling bypass system, wherein the filter shell is provided with a filter inlet and a filter outlet; the cooling system comprises an oil inlet, an engine oil temperature management channel, an engine oil cooler, a filter and an oil outlet; a cooling inlet and a bypass inlet are arranged on the side wall of the engine oil temperature management channel; the cooling bypass system comprises a thermostat; the thermostat comprises a thermostat base fixed in the engine oil temperature management channel, a thermostat casing which is sleeved on the thermostat base in a sliding manner and surrounds to form a paraffin accommodating cavity, and a thermostat piston ring connected with the thermostat casing; paraffin is arranged in the paraffin containing cavity. Compared with the prior art, the engine oil temperature detection device adopts the thermostat with a physical paraffin structure to detect the engine oil temperature, and can realize that the engine oil can be cooled by the engine oil cooler when the engine oil temperature is higher; when the temperature of the engine oil is lower, the engine oil directly reaches the filter through the bypass, and the flowing resistance of the engine oil is reduced, so that the effects of energy conservation and emission reduction are achieved.

Description

Integrated oil filter

Technical Field

The utility model belongs to the technical field of filters, and relates to an integrated oil filter.

Background

At present, most of engine oil filters on the market are only provided with an engine oil cooler to cool engine oil, so that the over-high temperature of the engine oil is prevented, the service life of the engine oil is prevented from being reduced, but when the low temperature is low in winter, the resistance of the whole lubricating system is increased by the engine oil passing through the cooler, the energy consumption is increased, and the high oil consumption of an engine is directly caused; the oil-gas separator and the overpressure protection system are independently arranged on an engine lubricating system, and occupy a larger space on the engine; the utility model integrates the common standard configurations on the oil filter, under the same configuration, the engine is smaller, the space is more compact, and meanwhile, the thermostat is added, so that the temperature of the engine oil is more accurately and effectively managed and adjusted, and the effects of energy conservation and emission reduction are achieved under the condition of not influencing the service life of the engine oil.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an integrated engine oil filter.

The purpose of the utility model can be realized by the following technical scheme:

an integrated engine oil filter comprises

A filter housing;

the cooling system comprises an oil inlet, an engine oil temperature management channel, an engine oil cooler, a filter and an oil outlet which are arranged on the filter shell and communicated in sequence; the side wall of the engine oil temperature management channel is provided with a cooling inlet communicated with an engine oil cooler; and

the cooling bypass system comprises a bypass inlet which is arranged on the side wall of the engine oil temperature management channel and communicated with the inlet end of the filter, and a thermostat which is arranged in the engine oil temperature management channel;

the bypass inlet is arranged at the far end of the oil inlet relative to the cooling inlet;

the thermostat comprises a thermostat base fixedly connected with the engine oil temperature management channel, a thermostat casing which is sleeved on the thermostat base in a sliding mode and mutually surrounds to form a paraffin containing cavity, and a thermostat piston ring which is connected with the thermostat casing and of which the outer wall is in sliding sealing contact with the inner wall of the engine oil temperature management channel;

the paraffin holds the intracavity and is equipped with paraffin to make when paraffin solidifies, the sealed cover of thermostat piston ring is on cooling the import, when paraffin thermal expansion, the sealed cover of thermostat piston ring is on the bypass import.

Furthermore, a thermostat valve seat is fixedly arranged in the engine oil temperature management channel, a thermostat ejector pin penetrates through the thermostat base, one end of the thermostat ejector pin extends into the paraffin containing cavity, and the other end of the thermostat ejector pin is fixedly connected with the thermostat valve seat.

Furthermore, the thermostat valve seat is in interference fit or threaded connection with the engine oil temperature management channel.

Furthermore, the thermostat also comprises an elastic reset assembly, the elastic reset assembly comprises an elastic reset ring which is embedded in the engine oil temperature management channel in a sliding mode and is connected with a piston ring of the thermostat, and a reset spring which is arranged between the elastic reset ring and the engine oil temperature management channel, and the elastic thrust direction of the reset spring is opposite to the displacement direction of the thermostat casing when paraffin is heated to expand.

Furthermore, a bypass flow channel is arranged on the filter shell, and a bypass inlet is communicated with the inlet end of the filter through the bypass flow channel.

Furthermore, the filter consists of a cavity arranged on the filter shell, a filter mounting cover arranged at the top of the cavity and a filter element arranged in the cavity;

the cavity is respectively communicated with the bypass inlet and the outlet end of the engine oil cooler.

Furthermore, an oil inlet groove is formed in the filter shell, and the oil inlet is formed in the oil inlet groove;

the oil filter also comprises an overvoltage protection system, wherein the overvoltage protection system comprises an overvoltage oil inlet, an overvoltage protection flow passage and an overvoltage oil return opening which are arranged on the filter shell and are sequentially communicated; the overpressure oil inlet is arranged in the oil inlet groove, and a pressure relief valve is arranged in the overpressure oil inlet.

Furthermore, the pressure relief valve comprises a pressure relief valve seat which is embedded at the over-pressure oil inlet and provided with a through hole in the middle, a pressure relief piston which can be abutted and sealed with the through hole, a stop block arranged on the side wall of the over-pressure oil inlet, and a pressure relief spring axially arranged between the stop block and the pressure relief piston.

Furthermore, the pressure relief valve seat is in threaded connection or welded connection with the overpressure oil inlet.

Furthermore, an oil-gas separator is arranged on the filter shell.

Compared with the prior art, the utility model has the following characteristics:

1) the thermostat with a physical paraffin structure is adopted to detect the temperature of the engine oil, and the cold runner or bypass flow of the engine is automatically opened or closed according to the detected temperature, so that the engine oil can be cooled by the engine oil cooler when the temperature of the engine oil is higher, and the filter element of the filter is prevented from being damaged; when the temperature of the engine oil is lower, the engine oil can be prevented from flowing through the engine oil cooler and directly reaching the filter through the bypass, and the low-temperature flow resistance of the engine oil in the filter is reduced, so that the effects of energy conservation and emission reduction are achieved;

2) according to the utility model, the oil-gas separator, the filter and the engine oil cooler are integrated, so that the whole structure is more compact, the arrangement space of the engine is favorably reduced, the weight of the engine is lightened, and the requirements of energy conservation and emission reduction are favorably met;

3) the utility model better protects the engine lubricating system and the oil filter component by integrating a simple and reliable overvoltage protection system.

Drawings

FIG. 1 is a schematic front view of an integrated oil filter according to an embodiment;

FIG. 2 is a schematic diagram of a rear view of an integrated oil filter according to an embodiment;

FIG. 3 is a sectional view taken along line A-A of FIG. 2;

FIG. 4 is a front partial cross-sectional view of an integrated oil filter according to an embodiment;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 6 is a cross-sectional view taken along line C-C of FIG. 2;

the notation in the figure is:

1-a filter shell, 2-an oil inlet, 3-an engine oil temperature management channel, 4-an engine oil cooler, 5-a filter, 6-an oil outlet, 7-a cooling inlet, 8-a filter mounting cover, 9-a filter element, 10-a bypass inlet, 11-a bypass flow passage, 12-a thermostat valve seat, 13-a thermostat and 1301-a thermostat base, 1302-thermostat casing, 1303-thermostat piston ring, 1304-thermostat thimble, 1305-elastic reset ring, 1306-reset spring, 14-overpressure protection flow channel, 15-oil inlet groove, 16-overpressure oil inlet, 17-overpressure oil return port, 18-pressure relief valve seat, 19-pressure relief piston, 20-stop block, 21-pressure relief spring and 22-oil-gas separator.

Detailed Description

The utility model is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

The embodiment is as follows:

as shown in fig. 1 and 2, the integrated oil filter includes a filter housing 1, and a cooling system, a cooling bypass system, an overpressure protection system, and an oil-gas separator 22 disposed on the filter housing 1.

The cooling system comprises an oil inlet 2, an engine oil temperature management channel 3, an engine oil cooler 4, a filter 5 and an oil outlet 6 which are arranged on a filter shell 1 and communicated in sequence; and a cooling inlet 7 communicated with the oil cooler 4 is arranged on the side wall of the oil temperature management channel 3. The filter 5 consists of a cavity arranged on the filter shell 1, a filter mounting cover 8 arranged at the top of the cavity and a filter element 9 arranged in the cavity.

The filter installation cover 8 is a plastic cover and is connected with the filter shell 1 through sawtooth threads, an O-shaped ring is sealed, one end of the filter element 9 is connected with the plastic cover through a buckle structure, an outlet at the other end of the filter element is inserted into the filter shell 1, and inner sealing is realized through a sealing ring.

As shown in fig. 3 to 4, the cooling bypass system includes a bypass inlet 10 opened in the side wall of the oil temperature management passage 3 and communicating with the inlet end of the filter 5, a bypass flow passage 11 integrated in the filter housing 1 and communicating the bypass inlet 10 with the cavity of the filter 5, and a thermostat valve seat 12 and a thermostat 13 provided in the oil temperature management passage 3 in the flow direction. The bypass inlet 10 is located at a distal end of the oil inlet 2 relative to the cooling inlet 7.

The thermostat 13 comprises a thermostat base 1301 fixedly connected with the thermostat valve seat 12, a thermostat housing 1302 slidably sleeved on the thermostat base 1301 and mutually surrounding to form a paraffin accommodating cavity, and a thermostat piston ring 1303 connected with the thermostat housing 1302 and having an outer wall in sliding sealing contact with the inner wall of the engine oil temperature management channel 3; a paraffin bag is arranged in the paraffin containing cavity, and when paraffin is solidified, a thermostat piston ring 1303 is sealed and covered on the cooling inlet 7, and when paraffin is heated and expanded, the thermostat piston ring 1303 is sealed and covered on the bypass inlet 10.

A thermostat thimble 1304 is provided on the thermostat base 1301 in a penetrating manner, one end of the thermostat thimble 1304 extends into the paraffin accommodating cavity, and the other end is fixedly connected to the thermostat valve seat 12. The thermostat valve seat 12 is in interference fit or threaded connection with the oil temperature management passage 3.

The thermostat 13 further includes an elastic return assembly, which includes an elastic return ring 1305 slidably embedded in the oil temperature management passage 3 and connected to the thermostat piston ring 1303, and a return spring 1306 disposed between the elastic return ring 1305 and the oil temperature management passage 3, wherein an elastic thrust direction of the return spring 1306 is opposite to a displacement direction of the thermostat housing 1302 when the paraffin wax is thermally expanded.

The filter shell 1 is provided with a bypass flow passage 11, and a bypass inlet 10 is communicated with the inlet end of the filter 5 through the bypass flow passage 11.

When the engine is ignited, the engine oil pump can convey engine oil with certain flow, certain temperature and certain pressure to the device through the oil inlet 2 for engine oil filtration. When the thermostat 13 detects that the temperature of the engine oil is low, namely the temperature is less than T1, and the range of T1 is 95-110 ℃, paraffin in the thermostat 13 keeps a solidification state, a thermostat piston ring 1303 is hermetically covered at the cooling inlet 7, a flow passage leading to the cooler is closed, as shown in FIG. 3, the engine oil can only pass through the bypass flow passage 11 of the cooler and reach the filter 5 for filtering, and then flows out from the oil outlet 6 to enter an engine lubricating pipeline.

When the thermostat 13 detects that the temperature of the engine oil reaches T1, the paraffin in the thermostat 13 starts to expand, and the thermostat housing 1302 drives the thermostat piston ring 1303 to move upward together due to the contact between the thermostat thimble 1304 and the thermostat valve seat 12, so that the cooling inlet 7 is gradually opened, and the bypass inlet 10 is gradually closed.

When the thermostat 13 detects that the temperature of the engine oil reaches T2, i.e., the expansion limit temperature of the paraffin, the bypass inlet 10 is completely closed by the thermostat piston ring 1303, the bypass flow passage 11 is closed, and the engine oil is cooled down by the engine oil cooler 4 (as shown in fig. 6).

When the thermostat 13 detects that the oil temperature is between T1 and T2, a portion of the oil is cooled by the oil cooler 4, and another portion of the oil is directed to the filter 5 through the bypass flow path 11.

In other embodiments, an electric thermostat may be used instead of the physical paraffin structure thermostat 13 of the present embodiment. Meanwhile, in the above: when the temperature of the engine oil is lower than T1, the engine oil passes through the bypass flow passage 11 completely, when the temperature of the engine oil is higher than T2, the engine oil passes through the engine oil cooler 4 completely, so that the control logic of the thermostat is easy to understand, and because a bushing on the thermostat is in clearance fit with a shell, when the temperature is lower than T1, a part of the engine oil still flows to the engine cooler, and when the temperature is higher than T2, a part of the engine oil still flows to the cooler bypass flow passage, so that the regulation function of the thermostat is not influenced.

An oil inlet groove 15 is arranged on the filter shell 1, and the oil inlet 2 is arranged in the oil inlet groove 15.

As shown in fig. 5, the overvoltage protection system includes an overvoltage oil inlet 16, an overvoltage protection flow passage 14, and an overvoltage oil return port 17, which are arranged on the filter housing 1 and are sequentially communicated; the overpressure oil inlet 16 is arranged in the oil inlet groove 15, and a pressure relief valve is arranged in the overpressure oil inlet 16. The pressure relief valve comprises a pressure relief valve seat 18 which is embedded in the overpressure oil inlet 16 and provided with a through hole in the middle, a pressure relief piston 19 which can abut against and seal the through hole, a stop block 20 arranged on the side wall of the overpressure oil inlet 16, and a pressure relief spring 21 axially arranged between the stop block 20 and the pressure relief piston 19. The pressure relief protection and the single valve function are realized through the components. The pressure relief valve seat 18 is connected with the overpressure oil inlet 16 through threads or welding, and is fastened through glue.

When the pressure of an engine oil pump on the engine is large and exceeds P1, and P1 can be set between 8-15 bar, the engine oil can push a pressure relief piston 19 to move towards the right side in the drawing through a through hole on a pressure relief valve seat 18, a pressure relief spring 21 is compressed, a flow channel is opened, the engine oil is unloaded from an oil inlet groove 15, enters an overpressure protection flow channel 14, reaches an overpressure oil return port 17, returns to an engine oil pan, and finishes the oil pressure unloading work, so that a filter and other parts are well protected.

In order to ensure the installation stability and the sealing performance of the integrated structure, the oil-gas separator 22 is installed on the filter shell 1 and is connected with the filter shell through bolts, and the sealing ring is sealed. Similarly, the oil cooler 4 is connected to the filter case 1 by bolts, and sealed by a gasket.

The embodiments described above are intended to facilitate the understanding and use of the utility model by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make modifications and alterations without departing from the scope of the present invention.

Claims

1. An integrated oil filter, characterized in that, the oil filter includes

A filter case (1);

the cooling system comprises an oil inlet (2), an engine oil temperature management channel (3), an engine oil cooler (4), a filter (5) and an oil outlet (6), which are arranged on the filter shell (1) and are communicated in sequence; a cooling inlet (7) communicated with the engine oil cooler (4) is arranged on the side wall of the engine oil temperature management channel (3); and

the cooling bypass system comprises a bypass inlet (10) which is arranged on the side wall of the engine oil temperature management channel (3) and communicated with the inlet end of the filter (5), and a thermostat (13) which is arranged in the engine oil temperature management channel (3);

the bypass inlet (10) is arranged at the far end of the oil inlet (2) relative to the cooling inlet (7);

the thermostat (13) comprises a thermostat base (1301) fixedly connected with the engine oil temperature management channel (3), a thermostat casing (1302) which is sleeved on the thermostat base (1301) in a sliding mode and mutually surrounds to form a paraffin containing cavity, and a thermostat piston ring (1303) which is connected with the thermostat casing (1302) and of which the outer wall is in sliding sealing contact with the inner wall of the engine oil temperature management channel (3);

and paraffin is arranged in the paraffin containing cavity, when the paraffin is solidified, the thermostat piston ring (1303) is sealed and covered on the cooling inlet (7), and when the paraffin is heated and expanded, the thermostat piston ring (1303) is sealed and covered on the bypass inlet (10).

2. An integrated engine oil filter according to claim 1, wherein a thermostat valve seat (12) is further fixedly arranged in the engine oil temperature management passage (3), a thermostat ejector pin (1304) is arranged on the thermostat base (1301) in a penetrating manner, one end of the thermostat ejector pin (1304) extends into the paraffin accommodating cavity, and the other end of the thermostat ejector pin is fixedly connected with the thermostat valve seat (12).

3. An integrated oil filter according to claim 2 in which the thermostat valve seat (12) is in an interference fit or threaded connection with the oil temperature management passage (3).

4. An integrated oil filter according to claim 1 wherein the thermostat (13) further comprises a resilient return assembly comprising a resilient return ring (1305) slidably received in the oil temperature management passage (3) and connected to the thermostat piston ring (1303), and a return spring (1306) disposed between the resilient return ring (1305) and the oil temperature management passage (3), the return spring (1306) having a resilient thrust direction opposite to the direction of displacement of the thermostat housing (1302) when the wax expands when heated.

5. An integrated oil filter according to claim 1 wherein the filter housing (1) is provided with a bypass flow passage (11), the bypass inlet (10) being in communication with the inlet end of the filter (5) via the bypass flow passage (11).

6. An integrated oil filter according to claim 1 wherein the filter (5) is composed of a cavity opened on the filter housing (1), a filter mounting cover (8) arranged on the top of the cavity, and a filter element arranged in the cavity;

the cavity is respectively communicated with the bypass inlet (10) and the outlet end of the engine oil cooler (4).

7. An integrated engine oil filter according to claim 1, wherein the filter housing (1) is provided with an oil inlet groove (15), and the oil inlet (2) is arranged in the oil inlet groove (15);

the oil filter also comprises an overvoltage protection system, wherein the overvoltage protection system comprises an overvoltage oil inlet (16), an overvoltage protection flow channel (14) and an overvoltage oil return opening (17) which are arranged on the filter shell (1) and are communicated in sequence; the overpressure oil inlet (16) is arranged in the oil inlet groove (15), and a pressure relief valve is arranged in the overpressure oil inlet (16).

8. The integrated engine oil filter of claim 7 wherein the pressure relief valve comprises a pressure relief valve seat (18) embedded in the overpressure oil inlet (16) and having a through hole in the middle, a pressure relief piston (19) capable of abutting against and sealing the through hole, a stop (20) disposed on the sidewall of the overpressure oil inlet (16), and a pressure relief spring axially disposed between the stop (20) and the pressure relief piston (19).

9. An integrated oil filter according to claim 8 wherein the pressure relief valve seat (18) is in threaded or welded connection with the overpressure inlet (16).

10. An integrated oil filter according to claim 1 wherein the filter housing (1) is further provided with an air-oil separator (22).