CN109098815B

CN109098815B - Oil filter and vehicle with same

Info

Publication number: CN109098815B
Application number: CN201811106472.XA
Authority: CN
Inventors: 朱明箴
Original assignee: 朱明箴
Current assignee: Guozhi Huiying (Beijing) Technology Development Co., Ltd
Priority date: 2018-09-21
Filing date: 2018-09-21
Publication date: 2020-10-16
Anticipated expiration: 2038-09-21
Also published as: CN109098815A

Abstract

The invention discloses an oil filter and a vehicle with the same. The oil cleaner includes shell, outer filter core and interior filter core, and outer filter core is the tube-shape and establishes in the shell for once filtering machine oil, and interior filter core is the tube-shape and establishes in outer filter core for carry out secondary filter to machine oil after once filtering, and interior filter core is including supporting the metal mesh and establishing the metal sintering felt on the inner peripheral surface that supports the metal mesh. The oil filter has high filtering precision and strong pollutant-containing capacity, and the inner filter element can be recycled.

Description

Oil filter and vehicle with same

Technical Field

The invention relates to the technical field of filters, in particular to an oil filter and a vehicle with the same.

Background

An oil filter of a vehicle is used to filter impurities in oil to improve the lubricating effect of the oil. In the related art, a filter element of an oil filter is usually made of filter paper or filter cloth, so that the filter element is low in filtering precision, easy to block and short in service life.

Disclosure of Invention

The present invention is based on the discovery and awareness by the inventors of the following problems:

among the correlation technique, oil cleaner's filter core is made by filter paper or filter cloth usually, can only carry out once filtration and filter fineness low to machine oil, the flow resistance that receives after impurity in the machine oil gets into the filter core is great, the filter core is used for storing the dirty space of receiving of impurity little, it is few to receive the dirt volume, and filterable impurity is difficult to flow out in oil cleaner's the casing under self action of gravity down from the filter core, the filter core blocks up easily from this, influence the filter effect of filter core, cause the filter core to become invalid even, the life of filter core has been shortened.

In addition, the small molecule alkyl peroxides, sulfides and nitrides dissolved and produced by the engine oil during lubrication and cooling can acidify and oxidize the lubricating oil to denature the oil and produce sludge. The related art filter cartridge cannot filter fine impurities such as sludge, for example, the related art filter cartridge cannot filter impurities of a micron order. In addition, under the action of high and low temperatures, condensed water is generated in the shell of the ignition device of the vehicle, and the condensed water enters the engine through the filter element to influence the ignition of the engine.

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.

Therefore, the invention provides the oil filter which has good filtering performance and high filtering precision, and the inner filter element can be recycled.

The invention also provides a vehicle with the oil filter.

The engine oil filter comprises a shell, an outer filter element and an inner filter element, wherein the outer filter element is cylindrical and arranged in the shell and used for carrying out primary filtration on engine oil, the inner filter element is cylindrical and arranged in the outer filter element and used for carrying out secondary filtration on the engine oil subjected to primary filtration, and the inner filter element comprises a supporting metal net and a metal sintered felt arranged on the inner circumferential surface of the supporting metal net.

According to the oil filter provided by the embodiment of the invention, larger impurities in engine oil are filtered by the outer filter element, fine impurities such as oil sludge in the engine oil are filtered by the inner filter element, the filtering precision is improved, fine impurities such as oil sludge filtered by the metal sintered felt flow down along the supporting metal mesh under the self gravity, a filtering channel of the engine oil is not blocked, the service life of the oil filter is prolonged, the inner filter element made of the metal sintered felt can filter the oil sludge, the filtering precision is further improved, the inner filter element can be repeatedly recycled after being used for a period of time by flushing the inner filter element, the cost is reduced, and the waste is reduced.

In some embodiments, the outer wall of the inner filter element is provided with grooves extending in the axial direction of the inner filter element.

Preferably, the inner filter element is corrugated in cross-section.

In some embodiments, the metal sintered felt is pressed together with the supporting metal mesh.

In some embodiments, the pore size of the metal sintered felt is between 5 μm and 25 μm.

In some embodiments, the oil filter further comprises a center skeleton disposed at the center of the inner filter element to support the inner filter element.

In some embodiments, the inner filter element is sealed at both axial ends by end caps.

Optionally, the outer filter element sequentially comprises an inner fine filter fiber layer, an adsorptive fiber layer, a middle fine filter fiber layer, a skeleton fiber layer and an outer coarse filter fiber layer from inside to outside along the radial direction of the outer filter element, and the pore diameters of the inner fine filter fiber layer, the adsorptive fiber layer, the middle fine filter fiber layer, the skeleton fiber layer and the outer coarse filter fiber layer are gradually increased from inside to outside along the radial direction.

And at least one of the inner peripheral surface and the outer peripheral surface of the metal sintered felt is provided with a hydrophobic filtering membrane.

According to a second aspect of the invention, the vehicle comprises the oil filter of the above embodiment.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view showing the internal structure of an oil filter according to an embodiment of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic view of the mesh holder and end cap of an embodiment of the present invention in combination;

FIG. 4 is a schematic view of the mesh stent in cooperation with a central skeleton according to an embodiment of the present invention;

fig. 5 is a schematic view of the construction of an outer cartridge according to an embodiment of the present invention.

Reference numerals:

the oil filter comprises an oil filter 100, a shell 1, an oil inlet hole 11, an oil outlet hole 12, an outer filter element 2, an inner fine filter fiber layer 21, an adsorptive fiber layer 22, a middle fine filter fiber layer 23, a framework fiber layer 24, an outer coarse filter fiber layer 25, an oil inlet cavity 3, an oil outlet cavity 4, an inner filter element 5, a supporting metal net 511, a metal sintered felt 512, a groove 52, a central framework 6, an inner filter element end cover 7 and a limiting bulge 71.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

An oil filter 100 according to an embodiment of the present invention will be described first with reference to the drawings.

As shown in fig. 1 to 5, an oil filter 100 according to an embodiment of the present invention includes a housing 1, an outer filter element 2, and an inner filter element 5. Outer filter core 2 and interior filter core 5 are the tube-shape, and outer filter core 2 establishes in shell 1, and outer filter core 2 cover is outside interior filter core 5. The filtering aperture of the outer filter element 2 is larger than that of the inner filter element 5.

As shown in fig. 1, the housing 1 has an oil inlet hole 11 and an oil outlet hole 12, an oil inlet chamber 3 communicated with the oil inlet hole 11 is formed between the outer filter element 2 and the inner wall of the housing 1, an oil outlet chamber 4 is formed in the inner filter element 5, the oil outlet chamber 4 is formed by a central passage of the inner filter element 5, and the oil outlet chamber 4 is communicated with the oil outlet hole 12.

The engine oil enters the oil inlet cavity 3 in the shell 1 from the oil inlet hole 11, then is primarily filtered (i.e. coarse filtration) from the oil inlet cavity 3 along the radial direction through the outer filter element 2 and enters the space between the outer filter element 2 and the inner filter element 5, the engine oil after primary filtration is secondarily filtered (i.e. fine filtration) along the radial direction through the inner filter element 5, the engine oil after secondary filtration by the inner filter element 5 enters the oil outlet cavity 4, and the engine oil flows out of the engine oil filter 100 from the oil outlet cavity 4 through the oil outlet hole 12.

As shown in fig. 2, the inner filter element 5 comprises a supporting metal mesh 511 and a metal sintered felt 512. The supporting metal net 511 is cylindrical, the metal sintering felt 512 is attached to the inner circumferential surface of the supporting metal net 511, for example, the metal sintering felt 512 and the supporting metal net 511 are pressed together, the supporting metal net 511 plays a role in supporting and protecting the metal sintering felt 512, the metal sintering felt 512 is prevented from deforming, and the strength of the inner filter element is improved. The metal sintered felt 512 can be made of metal fibers through non-woven paving, overlapping and high-temperature sintering, and has the characteristics of high temperature resistance, corrosion resistance and high filtering precision.

When the engine oil is filtered once through the outer filter element 2, the outer filter element 2 filters out larger impurities in the engine oil, and fine impurities (such as oil sludge) in the engine oil enter a space between the outer filter element 2 and the inner filter element 5 randomly.

The engine oil after primary filtration is secondarily filtered through the metal sintered felt 512 along the radial direction from the space between the outer filter element 2 and the inner filter element 5, fine impurities in the engine oil cannot be filtered through the metal sintered felt 512, and the fine impurities flow downwards along the supporting metal net 511 under the action of self gravity, for example, the fine impurities flow to the bottom of the shell 1, so that the inner filter element 5 cannot be blocked, and the service life of the inner filter element 5 is prolonged. In addition, the oil filter 100 can wash out impurities such as oil sludge and the like by washing the inner filter element after being used for a period of time, and the inner filter element 5 can be recycled, so that the cost is reduced, and the waste is reduced.

According to the oil filter 100 of the embodiment of the invention, the outer filter element 2 and the inner filter element 5 composed of the supporting metal net 511 and the metal sintered felt 512 improve the filtering precision, for example, micron-sized fine impurities such as oil sludge can be filtered, the dirt-containing capacity of the filter element is improved, the service life of the oil filter 100 is prolonged, and the inner filter element 5 can be repeatedly recycled, thereby reducing the cost.

Preferably, the metal sintered felt 512 is a stainless steel sintered felt, so that it is easy to manufacture and has good corrosion resistance.

In some alternative embodiments, as shown in fig. 1-4, the outer wall of the inner cartridge 5 is provided with grooves 52 extending in the axial direction of the inner cartridge 5. From this, can increase the filter area of inner filter core 5, and slot 52 can receive dirty space for the filterable slight impurity of inner filter core 5 provides, and the filter capacity improves, long service life to slight impurity flows out inner filter core 5 downwards along inner filter core 5's axial direction under self action of gravity, for example, flows to the bottom of shell 1, further improves inner filter core 5's life.

As shown in fig. 1 to 4, the inner cartridge 5 is corrugated in cross-section such that a plurality of grooves 52 are formed on the inner and outer surfaces of the peripheral wall of the inner cartridge 5. This further increases the filter area and the dirt collecting space of the inner filter insert 5.

Preferably, the metal sintered felt 512 is pressed together with the supporting metal mesh 511. In manufacturing the inner filter element 5, a flat plate-like supporting metal net 511 and a flat plate-like sintered metal felt 512 are separately prepared, and then the sintered metal felt 512 and the supporting metal net 511 may be pressed together to form a corrugated cylindrical shape at the same time of the pressing.

Preferably, the pore size of the metal sintered felt 512 is 5 μm to 25 μm. Thus, the pore size of the metal sintered felt 512 can ensure the ability to filter fine impurities (e.g., sludge) in the engine oil, and if the pore size of the metal sintered felt 512 is too small, the difficulty of manufacturing increases, and if the pore size is too large, impurities such as sludge cannot be filtered. More preferably, the pore size of the metal sintered felt 512 is 10 μm to 20 μm.

In particular embodiments, as shown in fig. 1 and 4, the oil filter 100 further includes a centerframe 6, the centerframe 6 being disposed within the inner cartridge 5 to support the inner cartridge 5.

In some preferred embodiments, at least one of the inner and outer circumferential surfaces of the metal sintered felt 512 is provided with a hydrophobic filter membrane. In some examples, for example, the hydrophobic filter membrane is pressed onto the surface of the metal sintered felt 512. In other preferred examples, the hydrophobic filter membrane may be provided only on the outer circumferential surface of the metal sintered felt 512. In still other examples, both the inner and outer circumferential surfaces of the metal sintered felt 512 may be provided with hydrophobic filter membranes.

By providing the hydrophobic filtering membrane on the surface of the metal sintered felt 512, the water in the engine oil can be blocked from entering the oil outlet chamber 4 along with the engine oil, and the water in the engine oil can be prevented from flowing into the engine from the oil outlet chamber 4, for example, the condensed water generated in the housing of the vehicle ignition device can be prevented from entering the engine to affect the ignition of the engine.

As shown in fig. 3, two axial ends of the inner filter element 5 are sealed by an inner filter element end cap 7, a plurality of limiting protrusions 71 are arranged at intervals in the circumferential direction of each inner filter element end cap 7, each limiting protrusion 71 faces the supporting metal net 511 and extends along the axial direction of the supporting metal net 511, and the limiting protrusions 71 are fitted in the grooves 52 in a one-to-one correspondence manner, so that the inner filter element end cap 7 and the inner filter element 5 are pre-positioned, and the inner filter element end cap 7 and the inner filter element 5 are conveniently fixed, for example, bonded, subsequently. Similarly, the end of the outer cartridge 2 may be sealed by an outer cartridge end cap.

Preferably, as shown in fig. 5, the outer filter element 2 includes an inner fine filter fiber layer 21, an adsorbent fiber layer 22, a middle fine filter fiber layer 23, a skeleton fiber layer 24 and an outer coarse filter fiber layer 25 in this order from inside to outside in the radial direction, and the pore diameters of the inner fine filter fiber layer 21, the adsorbent fiber layer 22, the middle fine filter fiber layer 23, the skeleton fiber layer 24 and the outer coarse filter fiber layer 25 are gradually increased in the radial direction from inside to outside.

From this, outer filter core 2 has five layers of gradual changes's aperture, filters the impurity that differs in size respectively, has not only increased outer filter core 2's filter area and pollutant carrying capacity, makes outer filter core 2's filter fineness height, filter effect good, long service life moreover.

In some embodiments, the innermost layer of the outer filter element 2 is wound into a cylindrical shape by the filter fibers, thereby forming an inner fine filter fiber layer 21 for filtering impurities with relatively small particle size, and the filter pore size of the inner fine filter fiber layer 21 is gradually increased from inside to outside in the radial direction.

The adsorptive fiber layer 22 is wound around the outside of the inner fine filter fiber layer 21, for example, the adsorptive fiber layer 22 is formed by using high-precision nano-grade adsorptive linear fibers, and the adsorptive fiber layer 22 is provided, so that germs in the engine oil can be filtered and removed. The middle fine filter fiber layer 23 is wound on the outer side of the adsorption fiber layer 22, the filter pore diameter of the middle fine filter fiber layer 23 is larger than that of the inner fine filter fiber layer 21, and the filter pore diameter of the middle fine filter fiber layer 23 gradually increases from the inside to the outside in the radial direction.

The skeleton fiber layer 24 is wound on the outer side of the middle fine filter fiber layer 23, the skeleton fiber layer 24 plays a supporting role in the whole outer filter element 2, the integral stiffness and hardness of the outer filter element 2 are enhanced, and the situation that the outer filter element 2 cannot be used due to collapse and deformation in use is avoided. By using the framework fiber layer 24, the outer filter element 2 does not need to use a metal filter screen, the use of metal is reduced, the cost is reduced, and the outer filter element 2 can be recycled, so that the environmental pollution is reduced.

Finally, an outer coarse filter fiber layer 25 is wound on the outer side of the skeleton fiber layer 24, the filter pore size of the outer coarse filter fiber layer 25 is larger than that of the inner fine filter fiber layer 21 and the middle fine filter fiber layer 23, and the filter pore size of the outer coarse filter fiber layer 25 gradually increases from inside to outside in a gradually-sparse manner in the radial direction. The outer coarse filtration fiber layer 25 not only plays a role of coarse filtration physical interception, but also plays a role of protection for the skeleton fiber layer 24. Compared with the outer filter element made of filter paper in the related technology, the outer filter element 2 formed by a plurality of fiber layers has high filtering precision, strong dirt-containing capacity and long service life.

In other words, the filtration pore size of the inner fine filtration fiber layer 21 is smaller than that of the middle fine filtration fiber layer 23, and the filtration pore size of the middle fine filtration fiber layer 23 is smaller than that of the outer coarse filtration fiber layer 25. And as for each of the inner fine filtering fiber layer 21, the middle fine filtering fiber layer 23 and the outer coarse filtering fiber layer 25, the filtering aperture is gradually increased from inside to outside along the radial direction, and the special structure of gradually increasing the inner density and the outer density layer by layer has larger dirt-holding capacity and excellent five-layer filtering, and the high-efficiency adsorption and the physical interception and filtration are perfectly combined, so that the impurity particles filtered from outside to inside along the radial direction of the outer filter element 2 are gradually reduced.

Because the inner fine filtering fiber layer 21, the middle fine filtering fiber layer 23 and the outer coarse filtering fiber layer 25 are accurately and electrically controlled to control winding by arranging spray heads and frequency converters with different apertures, and a directional and segmented flow guiding technology is adopted, the engine oil can be fully and effectively contacted with the filtering material, thereby achieving the required final filtering precision and improving the dirt receiving capacity.

The outer filter element 2 is formed by winding a plurality of fiber layers, the outer filter element 2 has five layers of gradually-changed multi-aperture, and impurities with different sizes are respectively intercepted and adsorbed and filtered, so that the filtering area and the pollutant carrying capacity are increased, and high filtering precision, good filtering effect and long service cycle are ensured. The adsorptive fiber layer 22 plays a role of adsorbing and removing, for example, can further filter out part of particles and germs in the filtered engine oil, thereby ensuring the cleanness of the engine oil and being not easy to deteriorate. The framework fiber layer 24 plays a framework supporting role, so that the stiffness and hardness of the outer filter element 2 are improved, the collapse of the outer filter element 2 is avoided, a metal net is not needed, the cost is reduced, and the circulating economic benefit is improved. And each layer of the outer filter element 2 can be formed by winding in gradient and reducing once in the whole process, the production is simple, and the cost is low.

In some embodiments of the present invention, the inner fine filter fiber layer 21, the middle fine filter fiber layer 23 and the outer coarse filter fiber layer 25 may be made of polyester fibers, or nylon fibers or PP fibers. For example, the inner fine filter fiber layer 21, the middle fine filter fiber layer 23 and the outer coarse filter fiber layer 25 may be formed by hot melt spinning polyester, nylon or PP pellets and winding them to a predetermined thickness.

In some embodiments of the present invention, the absorbent fibrous layer 22 is made of carbon fibers or plant fibers, such as cotton fibers, wood fibers, or coconut fibers, although the present invention is not limited thereto, and other suitable plant fibers, such as hemp fibers, can be used to form the absorbent fibrous layer 22. In one embodiment of the invention, the absorbent fibrous layer 22 may be wound from high density nano-scale carbon fibers.

In some embodiments of the present invention, the skeletal fiber layer 24 may be comprised of glass fibers, or polyurethane fibers, or polyhexene fibers. More specifically, the skeleton fiber is wound by glass fiber.

In order to improve the filtering effect, an active agent can be embedded in the framework fiber layer 24 and the outer coarse filtering fiber layer 25, for example, the active agent is a mixture of polyene polyamine anion and cation exchange resin particles and zeolite particles in a weight ratio of 1: 1, and the weight mixing ratio of the anion exchange resin particles to the cation exchange resin particles is 1: 2. of course, the active agent is not limited to being embedded in the matrix fiber layer 24 and the outer coarse filter fiber layer 25.

By embedding the active agent, the engine oil passing through each fiber layer and the active agent generate physical-chemical action, at least partial micromolecule alkyl peroxide, sulfide and nitride dissolved and generated during lubricating and cooling of the engine oil are adsorbed, filtered and removed, and oil denaturation caused by acidification of the engine oil and the action of the peroxide is avoided. Meanwhile, active molecules are slowly introduced into the engine oil through the activator in a migration exchange mode, the active molecules consumed due to the chemical action of a friction boundary are supplemented, and a non-isotactic high molecular compound is supplemented to the engine oil, so that the high-temperature thinning of the engine oil is prevented, the thickness of an oil film is effectively increased, the anti-wear performance of the engine oil is improved, and the service life of the engine oil is prolonged.

The vehicle of the embodiment of the invention includes the oil filter 100 of the above embodiment.

According to the vehicle provided by the embodiment of the invention, the service life of the oil filter 100 is longer, the times of maintenance and repair of the vehicle are reduced, and the cost is reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. An oil filter, comprising:

a housing;

the outer filter element is cylindrical and arranged in the shell and is used for filtering the engine oil for the first time;

the oil filter comprises an inner filter element, wherein the inner filter element is cylindrical and is arranged in an outer filter element and used for carrying out secondary filtration on engine oil after primary filtration, the inner filter element comprises a support metal net and a metal sintering felt arranged on the inner peripheral surface of the support metal net, the metal sintering felt and the support metal net are pressed together, a hydrophobic filter membrane is arranged on at least one of the inner peripheral surface and the outer peripheral surface of the metal sintering felt through pressing, the two axial ends of the inner filter element are respectively sealed by inner filter element end covers, a plurality of limiting bulges are arranged at intervals in the circumferential direction of each inner filter element end cover, each limiting bulge faces the support metal net and extends in the axial direction of the support metal net, grooves extending in the axial direction of the inner filter element are formed in the outer wall of the inner filter element, and the limiting bulges are matched in the grooves in a one-to-one correspondence manner.

2. The oil filter of claim 1 wherein the inner filter element is corrugated in cross-section.

3. The oil filter of claim 1 wherein the pore size of the metal sintered felt is 5 μm to 25 μm.

4. The oil filter of claim 1 further comprising: the central framework is arranged at the center of the inner filter element to support the inner filter element, and the two axial ends of the outer filter element are respectively sealed by the end covers of the outer filter element.

5. The oil filter according to any of claims 1 to 4, wherein the outer filter element comprises an inner fine filter fiber layer, an adsorptive fiber layer, a middle fine filter fiber layer, a skeleton fiber layer and an outer coarse filter fiber layer in this order from inside to outside in the radial direction of the outer filter element, and the pore diameters of the inner fine filter fiber layer, the adsorptive fiber layer, the middle fine filter fiber layer, the skeleton fiber layer and the outer coarse filter fiber layer increase in a gradient from inside to outside in the radial direction.

6. The oil filter of claim 5 wherein the filter pore size of each of the inner fine, middle fine and outer coarse filter fiber layers increases in a decreasing gradient from the inside to the outside in the radial direction.

7. A vehicle, characterized by comprising: an oil filter according to any one of claims 1 to 6.