RU30284U1 - Filter element - Google Patents

Abstract

1. A filter element containing porous layers, characterized in that they are made of polymer microporous fibers placed with a variable surface density and bonded in the manufacturing process. The filter element according to claim 1, characterized in that the fibers in each layer are placed randomly. The filter element according to claims 1 and 2, characterized in that pores are randomly distributed on the surface of the fibers. 4. The filter element according to claims 1 to 3, characterized in that the pores have an elongated shape.

Description

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F02M 35/02

FILTER ELEMENT

The solution relates to general-purpose devices for carrying out various physical and chemical processes, in particular, to separation, primarily to stationary filtering elements, and in particular to cylindrical filtering elements. It is most effectively used in air cleaners of internal and external combustion engines.

Known air purifiers with filter elements, the filter partitions of which are made of nonwoven materials. The properties of these materials are largely determined by the processes of their manufacture (see, for example, books: Krchma R. Nonwoven Textile Materials, M., Light Science Institute, 1964; Perepelkin KE Physico-chemical fundamentals of the processes of forming chemical fibers, M. Chemistry, 1978).

The filter element of the air purifier according to US 2019241 is a multi-layer structure of variable density, which ensures the performance of its operational properties. In turn, the oil is filtered through the filter baffles of a more complex configuration, as is the case in the filter elements according to US 2352300, US 2454982 and US 2564637. In the latter cases, the filter baffle is arranged in a spiral. Portions of the cartridge filter cartridge according to US 2512797 and FR 1237165 are also arranged in a spiral fashion. The ribbon of the filter element according to RU 2170605 is laid in a spiral pattern with overlapping adjacent coils up to half the width of the ribbon, and the fibers in the ribbon are bonded together at the contact points by augohesion bonding, while the number of bonded fibers decreases from the center to the periphery.

An important operational property of the filter element is its reliable stronger. The filter elements according to US 2537897 and US 2537898 are fixed on each of their surfaces, as well as the semi-cylindrical element of a deflated filter according to DE 904007. The filter element according to EN 10594 contains a shell that filters pghor and a perforated sleeve, the ends of which are hermetically attached to the covers with an adhesive composition in the lodgement each krppki. The filter according to RU 120041 is made monolithic with the formation of a tight connection between the filter material and the plastic bottom, ring and ribs

In the filter element of the engine air purifier according to L 60-45770, projections are provided on one of the parts to reduce the contact area between the parts made of foam material and to prevent the reduction of air permeability during elastic compression. As for the foam, its pores are very small, and this contributes to the fine cleaning of the filtered medium. In the filter element according to US 2941620, mounting discs are made massive, as well as in air cleaners according to US 29662960 and DE 1235066

polyurethane foam, in the filter for cleaning the fluid according to EP 152513 each of the layers is made of different thicknesses.

The filter element of the air cleaner of an internal combustion engine according to RU 2006653 is very effective, however, it is characterized by mutually exclusive signs, and the dimensions and properties of the pores are not indicated, which is essential for its functioning. In turn, the filter element according to WO 93/19832 is characterized as filled

ultra-high molecular weight fine-grained polyethylene, while given the size of the grains and its molecular weight. The pore sizes of the outer filter element are larger than the pore sizes of the inner filter element in the cascade filter according to RU 2069073, while the outer and inner filter elements are made of interconnected polymer fibers. The filter filter baffle according to RU 6148 contains several fractions of fibers with different average diameters and lengths. Between the microfibers of the filter cartridge of the replaceable filter element according to RU 2078409, a polymer filler with additives, filled in the form of porous granules, is placed.

A filter element made of a material that maintains and can be cleaned and further exploited is really good, which is expressed in RU 7338 as good wishes. The filter element according to RU 20868, which is a rigid frameless tubular design, is made of porous non-ferrous metal as well as the porous product according to RU 20929.

Thus, the filter elements were improved in relation to each of their parts, while the material from which these parts were made, their physicochemical properties, and also the dimensions and geometry of the fibers were significant.

Known filter element containing porous layers (see, for example, US 2037164). This filter element has an ordered pore placement structure, which can be achieved only at the expense of high costs in the production of the filter element. In addition, “the tortuosity of the passage of the filtered agent can be achieved only with a multilayer filter medium, and this is associated not only with additional costs, but also with a significant increase in the mass of the filter element. When applying layers, however, the pores in the transverse direction are not always separated from one another, which violates the “labyrinth” and does not provide the required purification of the filtered agent. In turn, this filter element is comparatively 11. It is easy to clean from contamination, but the mentioned “tortuosity will cause very noticeable expenses during cleaning.

The task is to improve the functional properties of the filter element while simplifying its design and reducing the cost of its production and operation.

Improving the functional properties of the filter element while simplifying its design and reducing the cost of its production and operation is ensured by changing the structure of the pores and their relative positioning.

For this, in the filter element containing porous layers, they are made of polymer microporous fibers placed with a variable surface density and bonded during the manufacturing process.

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porous layers in the filter element, will improve the functional properties of the filter element while simplifying its design and reducing the cost of its production and operation by changing the structure of the pores and their relative positioning, which creates the required "tortuosity and" labyrinth, effectively affecting the properties of the filter medium.

The random placement of fibers in each layer of the filter element will improve its functional properties, since the filtered agent, when it is cleaned, is forced to travel a much larger path.

The random distribution of pores on the surface of the fibers makes them effective even with their small size, significantly increasing the surface of interaction with the filtered agent.

The elongated pore shape contributes to the aforementioned effect to an even greater extent.

Pictured:

in FIG. 1 - element;

in FIG. 2 - filter element;

in FIG. 3 - the nature of the change in density;

in FIG. 4 - installation.

The filter element 1 (Fig. 1) contains porous layers 2.

Layers 2 are made of polymer microporous fibers 3 (Fig. 2). The fibers 3 are placed with a variable surface density 4. The density of the fibers 3, respectively, at diameters 5, 6 and 7 decreases as they increase (Fig. 3). Layers 2 are bonded (Fig. 4) in the manufacturing process.

The execution of polymer microporous fibers 3 placed with a variable surface density (Fig. 3) and bonded during the manufacturing process (Fig. 4) of the porous layers 2 in the filter element will improve the functional properties of the filter element while simplifying its design and reducing the cost of its production and exploitation by changing the structure of the pores and their relative positioning, which creates the required "tortuosity and" labyrinth, effectively affecting the properties of the filter medium.

The fibers 3 in each layer 2 are placed randomly (Fig. 2).

The random placement of fibers 3 in each layer 2 of the filter element will improve its functional properties, since the filtered agent, when it is cleaned, is forced to go a much longer way.

On the surface of the fibers 3, pores 8 are randomly distributed (Fig. 1).

The random distribution of pores 8 on the surface of the fibers makes them effective even with their small sizes, significantly increasing the surface of interaction with the filtered agent.

Pores 8 are elongated.

The elongated shape of the pores 8 further contributes to the achievement of the above effect.

The filter element operates as follows.

Filtered agent enters the filter and sequentially passes the fibers 3 of each of the layers 2 respectively arranged in diameters 5, 6, 7. The contaminant remains in the pores of the 8 fibers 3. A clean filtered agent exits outside the filter.

The execution of polymer microporous fibers 3 placed with a variable surface density (Fig. 3) and bonded during the manufacturing process (Fig. 4) of porous layers 2 in the filter element will improve the functional properties of the filter element while simplifying its design and reducing the cost of its production and exploitation by changing the structure of the pores and their mutual arrangement, due to the created “tortuosity and“ labyrinth, effectively affecting the properties of the filtering medium.

Claims (4)

1. A filter element containing porous layers, characterized in that they are made of polymer microporous fibers placed with a variable surface density and bonded during manufacturing. 2. The filter element according to claim 1, characterized in that the fibers in each layer are placed randomly. 3. The filter element according to claims 1 and 2, characterized in that the pores are randomly distributed on the surface of the fibers. 4. The filter element according to claims 1 to 3, characterized in that the pores have an elongated shape.