RU220573U1 - DUCT FILTER - Google Patents

Abstract

The utility model relates to the field of ventilation, mainly ventilation of residential premises, and is intended for filtering air coming from the street into the room. The channel filter contains a smaller base with an end fixing element, a pleated filter material and a larger base. The corrugated filter material is made to expand from the smaller base to the larger base, and a housing with filter material is attached to one of the bases. The degree of purification of the filter material is less than the degree of purification of the pleated filter material. The body is made with hollow ends. Technical result: increased service life due to increased filter life. 9 salary f-ly, 11 ill.

Description

Field of technology

[0001] This utility model relates to the field of ventilation, mainly ventilation of residential premises and is intended for filtering air coming from the street into the room.

State of the art

[0002] Duct filters of any kind combine two functions: they prevent contaminants from entering the room through the ventilation system or air supply valve ducts and protect ventilation equipment or the internal elements of the supply valves. The most important elements are the filter material and the structure that holds it.

[0003] However, many channel filters have a low filter resource, firstly, due to the lack of a filter material with a lower degree of purification placed in front of it and, secondly, the shape of the filter material with a higher degree of purification, leading to ineffective use of the filter surface. material. This leads to the need to frequently replace the filter material, and in some cases the filter as a whole, which is often difficult, especially in industrial ventilation systems, and costly.

[0004] A technical solution is known from the prior art, disclosed in patent No. RU 2718531 C1 (publ.: 04/08/2020; IPC: B01D 46/52). The invention relates to the field of ventilation, mainly ventilation of residential premises. A frameless channel filter contains a smaller base with a guide ring, a larger filter base in the shape of a ring with a side and an internal auxiliary element, while a sealing ring is attached to the outer surface of the side of the larger base, a corrugated filter material with an opening angle of 10-15 degrees, the pleated filter -the material is hermetically connected to the bases and is made to gradually expand from the smaller base to the larger base. The technical result is to increase the efficiency, as well as the convenience of installing a frameless channel filter in the air channel, due to the optimal arrangement of the surfaces of the corrugated filter material in the enclosed space of the air channel and the presence of elements (internal auxiliary element, sealing ring) that increase the convenience of filter installation, which allows you to increase the filter surface area, reduce energy costs for the filtration process, ensure the passage of air flow through the surfaces of the corrugated filter material, and ensure the speed and accuracy of installation of a frameless channel filter into the air channel.

[0005] In addition, a conical duct filter for ventilation systems is known according to patent No. RU 185112 U1 (published November 21, 2018; IPC: B01D 46/12; F24F 13/28). The utility model relates to duct-type air filters intended for installation in ventilation ducts of various ventilation systems, both residential and non-residential premises. In particular, the utility model is used in compact supply ventilation systems. The objective of the proposed utility model is to simplify the design and installation process of a duct filter in ventilation systems, as well as increase ease of use. The stated task is achieved by means of a conical duct filter for ventilation systems, consisting of a frame and filter material, containing an input/output, depending on the direction of the air flow, a supporting frame, an o-ring, an auxiliary form-building element of the frame, a corrugated filter material fixed in the frame with with a variable radius of distribution along the length of the filter, while the filter material is permanently connected to the elements of its frame, and the formative element of the filter frame is a lid-shaped element that limits the corrugated filter material and prevents the passage of air not through the filter material. In this case, the corrugated filter material can be made in the shape of a truncated cone. In this case, the formative element of the frame is made in the form of a lid-shaped element. The supporting frame serves to fix the filter material and hold the filter itself in the channel due to the frictional force between the elastic seal and the air duct. The claimed duct filter does not have a rigid connection with the air duct and can be freely installed at any location along the entire length of the air duct. The supporting frame can be made of hard or elastic material. Various options are possible for fixing the filter material in the supporting frame, for example, gluing with hot-melt adhesive. The technical result achieved from the implementation of the claimed technical solution is to simplify the design and installation of the claimed air duct filter in ventilation systems.

[0006] The disadvantage of the above-mentioned analogues is the absence of a coarse filter in the design of the filter element. As a result, the highly efficient E11 class filter collects both fine dust and coarse dust. Large dust, in turn, clogs the filter much faster, which significantly reduces the service life of a highly efficient filter.

[0007] Another known technical solution is a cartridge dust filter, disclosed in application No. JP 2000300926 A (published: 10/31/2000; IPC: B01D 46/10; B01D46/52; G21F9/02). The cartridge filter includes a hollow cylindrical main filter portion in which the filter material is inserted into the gap between the inner and outer double cylindrical air-permeable elements (porous cylindrical bodies), and a plate-shaped pre-filter portion in which the pre-filter material is held between the two air-permeable elements (disc). and porous disk). One end of the main part of the filter body is connected to the single surface of the pre-filter part in the form of a plate, and the entire other end of the main part of the filter body is closed by an end plate, and a connecting cylindrical body is provided on the outer periphery of the pre-filter part. With this arrangement, exhaust gas containing dust passes through the pre-filter portion to enter the hollow portion of the filter housing main portion and radially exit out of the filter housing main portion. This allows the cartridge filter to be integrated into the filter housing without changing existing equipment and increases the filtration area of the cartridge filter to extend its service life.

[0008] This filter is made in the shape of a cylinder. In view of this, to place it in the air channel, it is necessary to either make an air duct with a large diameter, or a filter with a smaller diameter than the diameter of the air channel. Thus, the air purification area is reduced and, as a result, the service life of the filter is reduced, i.e. more frequent replacements are required. Also, installing it in the air duct requires the installation of an additional partition in the air duct on which the filter will be fixed. The partitions will create additional aerodynamic resistance to the air flow, and will also complicate the installation of the filter in the air duct as a whole.

[0009] Also known is the filter unit of an air purification device described in application No. JP 2001120937 A (published: 05/08/2001; IPC: B01D 46/52). The filter unit consists of a pre-filter, a filter block and a filter frame to hold them. The filter bag is configured in such a way that a plurality of folds are formed by folding the filter paper, and the filter bag is held by compressing the filter frame in an almost parallel direction, guiding the folds almost in the direction of gravity. The filter frame has a rectangular cylindrical part to which a filter bag is attached, and slotted parts to which a pre-filter is attached, the pre-filter being attached to the slotted parts in the form of a Shoji door (Japanese paper sliding door). This allows the filter unit and pre-filter to be easily attached and detached to and from the filter frame and reduces manufacturing costs.

[0010] The described filter is made in the shape of a rectangle. Making the filter flat reduces the potential area for possible cleaning and, as a result, the service life of the filter is reduced, i.e. more frequent replacements are required.

Essence of a utility model

[0011] The objective of this utility model is to create a channel filter that provides an increase in the service life of the filter element.

[0012] This problem is solved by the claimed utility model by achieving such a technical result as increasing the service life of the filter by increasing the filter resource. The declared technical result is achieved, including, but not limited to, thanks to:

combinations of a high-efficiency filter and a coarse filter with the placement of a coarse filter in front of the high-efficiency filter along the air flow;

a combination of a highly efficient gradually expanding filter and a coarse filter.

[0013] More fully, the technical result is achieved by a channel filter containing a smaller base with an end fixing element, a pleated filter material and a larger base. In this case, the corrugated filter material is made to expand from the smaller base to the larger base, and a housing with filter material is fixed on the side of one of the bases. The degree of purification of the filter material is less than the degree of purification of the pleated filter material. The body is made with hollow ends.

[0014] The presence of a smaller and larger base is necessary to allow the pleated filter material to be installed in such a way that it is expandable. In this case, the presence of an end fixing element on a smaller base is necessary for reliable and tight installation of the filter in the air channel. The presence of another filter material, the degree of purification of which is less than the degree of purification of the pleated filter material, allows you to increase the service life of the filter in general and the pleated filter material in particular. The fact that the filter material is placed in the housing is necessary to allow it to be secured from one of the bases, as well as to hold the filter material inside the housing. In this case, the most important feature of this useful feature, which directly affects the achievement of the stated technical result, is the combination of making one of the filter materials, whose degree of purification is greater, corrugated and gradually expanding, as well as installing another filter material with a lower degree in front of it in the air flow cleaning. It is the combination of these features that ensures an increase in filter service life.

[0015] On one side of the filter material body there can be at least two protrusions parallel to the surface of the body, on each of which there is a lock. This may allow the housing to be securely fixed on the side of one of the bases.

[0016] Also, on the other side of the filter material body, at least two protrusions can be made perpendicular to the surface of the body. This may allow the filter to be securely fixed inside the housing. Moreover, in some cases, for reliable fixation of the filter material in the housing, at least two projections perpendicular to the surface of the housing can be additionally made on the side of the filter material housing with longitudinal protrusions.

[0017] In this case, all of the above-mentioned protrusions can be made equidistantly around the perimeter of the filter material housing.

[0018] A sponge filter material can be used as a filter material with a lower degree of purification, and a hard fiber can be used as a pleated filter material.

[0019] The end fixing element and the larger base can be made in the shape of a ring, and the filter material body can be made cylindrical in this case. In this case, the corrugated filter material, made to gradually expand from a smaller base to a larger base, will have the shape of a truncated cone.

Description of drawings

[0020] The subject matter of this application is described point by point and clearly stated in the claims of the utility model. The above-mentioned objects, features and advantages of the utility model are apparent from the following detailed description, in conjunction with the accompanying drawings, which show:

[0021] In FIG. Figure 1 shows an isometric view of a channel filter from the side of the larger base, according to this utility model.

[0022] In FIG. Figure 2 shows an isometric view of the channel filter from the side of the smaller base, according to this utility model.

[0023] In FIG. Figure 3 shows an isometric view of the filter material housing, according to this utility model.

[0024] In FIG. Figure 4 shows a top view of the filter material housing, according to this utility model.

[0025] In FIG. Figure 5 shows a side view of the filter material housing, according to this utility model.

[0026] In FIG. 6 shows an isometric view of a channel filter from the side of the larger base, according to the present utility model, in another embodiment.

[0027] In FIG. Figure 7 shows a channel filter in longitudinal section, according to this utility model, in the variant where the filter material with a lower degree of purification is located on the side of the smaller base.

[0028] In FIG. Figure 8 shows a channel filter in a longitudinal section with an image of the air flow, according to this utility model, in the embodiment when the filter material with a lower degree of purification is located on the side of the smaller base.

[0029] In FIG. Figure 9 shows a channel filter in longitudinal section, according to this utility model, in the variant where the filter material with a lower degree of purification is located on the side of the larger base.

[0030] In FIG. Figure 10 shows a channel filter in a longitudinal section with an image of the air flow, according to this utility model, in the embodiment when the filter material with a lower degree of purification is located on the side of the larger base.

[0031] In FIG. Figure 11 shows an isometric view of a channel filter without a fixed filter housing from the side of the larger base, according to the present utility model, with additional elements.

[0032] These figures are illustrated by the following positions:

Position 1 - channel filter;

Position 2 - smaller base;

Position 3 - end fixation element;

Position 4 - pleated filter material;

Position 5 - larger base;

Position 51 - internal auxiliary element;

Position 52 - sealing ring;

Position 6 - filter material housing with a lower degree of purification;

Position 61 - end of the body;

Position 611 - end of the housing, forward along the air flow;

Position 6111 - transverse projections at the end 611;

Position 612 - end of the housing, rearward along the air flow;

Position 6121 - longitudinal projections;

Position 6122 - transverse projections at the end 612;

Position 7 - filter material with a lower degree of purification.

Detailed description of the utility model

[0033] The following detailed description of the implementation of the utility model provides numerous implementation details designed to provide a clear understanding of the present utility model. However, it will be obvious to one skilled in the art how the present utility model can be used, both with and without these implementation details. In other cases, well-known methods, procedures and components are not described in detail so as not to unduly obscure the features of the present utility model.

[0034] In addition, from the above discussion it is clear that the utility model is not limited to the above implementation. Numerous possible modifications, changes, variations and replacements of non-essential features of a utility model, preserving the essence and form of this utility model, are obvious to specialists qualified in the subject area.

[0035] The term “filter” used in the description of the technical solution means the entire structure of the channel filter, i.e. This term refers to a combination of filter materials and their holding elements. The term “filter material” means the same as “filter material”, i.e. does not represent the entire filter design. In this case, the duct filter described below can be used both in the air ducts of ventilation systems and in the air ducts of supply valves. It is also important to note that it is applicable to both channels with a rectangular cross-section and those with a circular cross-section.

[0036] In FIG. 1 and fig. Figure 2 shows an isometric view of the channel filter 1 (hereinafter referred to as the filter) on both sides of the filter 1. The filter 1 contains a smaller base 2 with an end fixing element 3, a pleated filter material 4 and a larger base 5. In this case, the pleated filter material 4 is made gradually expanding from the smaller base 2 to the larger base 5. The housing 6 of the filter material 7 is fixed to the end fixing element 3, into which the filter material 7 is inserted. The degree of purification of the filter material 7 is less than the degree of purification of the pleated filter material 4.

[0037] The most important feature of this useful feature, which directly affects the achievement of the stated technical result, is the combination of making one of the filter materials 4, whose degree of purification is greater, corrugated and gradually expanding, as well as installing another filter material in front of it 4 along the air flow 7 with a lower degree of purification. It is the combination of these characteristics that ensures an increase in the service life of the filter 1. Thus, the corrugation of the filter material 4 with a higher degree of purification makes it possible to increase the effective cleaning area, because The resource of flat filter material runs out faster due to the smaller total surface area with other equal geometric parameters. In this case, making the filter material 4 gradually expanding also increases the effective cleaning area. If the filter material is made with a constant cross-section for placement in the channel, the cross-sectional area of the filter material must be less than the cross-sectional area of the channel in order to ensure the passage of air through the filter material. Moreover, to ensure normal air flow and avoid significant pressure drops across the filter, the cross sections should differ by approximately two times (so the air flow entering the filter will be equal to the air flow leaving it). Moreover, to install such a filter material into the channel, it will be necessary to install a wall in the channel for fixation, which will also create additional aerodynamic resistance. While the filter material, made expanding, may have a larger base with a cross section the same as the cross section of the channel. As a result, the aerodynamic resistance in the channel will decrease and the effective filtration area will increase. Installing filter material 7 with a lower degree of purification in front (along the air flow) of the corrugated filter material 4 allows you to further increase the service life of the filter 1 and, consequently, its service life. Thus, filter material 7 with a lower degree of purification can collect larger dust particles and debris, and pleated filter material 4 with a higher degree of purification can collect smaller dust and debris that were not captured by the first filter material 7. Thus, the combination These features allow you to increase the service life of filter 1.

[0038] The smaller base 2 of the filter 1 must be closed so that air cannot pass through it. At the same time, in order for the filter 1 to be firmly fixed in the channel, a fixation element 3 must be made on the smaller base. In this case, the cross-sectional area of the fixation element 3 must be equal or approximately equal to the cross-sectional area of the larger base 5. In the absence of the fixation element 3 or its implementation is too small, filter 1 in the channel can gradually become loose under the pressure of the air flow onto it. As a result, air gaps will form and untreated air will leak.

[0039] The larger base 5 should have the same cross-sectional shape as the air channel. In this case, the cross-sectional area should be equal or approximately equal (in the case of approximately equality, the only option is possible when the larger base 5 is smaller than the cross-section of the channel for more comfortable installation of the filter in the ventilation system channel) to the cross-sectional area of the air channel to ensure reliable fixation of filter 1 inside .

[0040] The pleated filter material 4 can be a rigid fiber and have a highly efficient degree of purification (HEPA - filtration classes E10-E14 (H10-H14)) or be a fine filter material (filtration classes M5-M6 and F7-F9 (EU5 -EU9)). In the case of a highly efficient filter material, from 85 to 99.5% of particles contained in the air will be retained, depending on the filtration class, including PM2.5 particles, fine pollen, microbes, fungal and mold spores (sizes from 0. 3 µm). If a filter material is used for fine cleaning, it will collect particles larger than 1 micrometer in size, for example, large, medium and fine dust, fluff, pollen, fungal/mold spores, bacteria.

[0041] In this case, the opening angle of the pleated filter material 4 can be selected equal to the range from 10 to 15 degrees. This can further ensure the optimal surface area of the filter material 4, which improves the filtration efficiency so that if the opening angle is less than 10 degrees, the pleated filter material 4 will collapse and the area of the filter material will be reduced if the angle is too large (more than 15 degrees), then the working area of the filter material 4 decreases, which leads to worse filtration. Also, making the pleated filter material 4 with an opening angle equal to the range from 10 to 15 degrees can additionally provide optimal angles of entry of the air flow into the filter surface, which allows the air to be filtered more thoroughly, and therefore the filtration efficiency increases.

[0042] The opening angle of the corrugation is defined as the angle between two straight lines passing through a common minimum point and two adjacent maximum points (if the corrugation is conventionally represented as a periodic function such as a sinusoid).

[0043] The filter material 7 with a lower degree of purification can be a coarse filter (filtration classes G1-G4 (EU1-EU4)) for both embodiments of the pleated filter material 4. In this case, the filter material 7 will clean the air from fluff , soot, coarse dust particles, insects, feathers, large plant seeds. For example, in this case, sponge filter material, nylon mesh and other materials can be used. However, if a material with filtration classes E10-E14 (H10-H14) is used as a pleated filter material 4, then a fine filter material, which was discussed above, can also be used as a filter material 7 with a lower degree of purification. said earlier.

[0044] The housing 6 of the filter material 7 must provide the possibility of reliable fixation on the end fixing element 3 or on a larger base 5, as well as reliable retention of the filter material 7 inside. In this case, the ends 61 of the housing 6 must be open in order to ensure the passage of air through the filter material 7.

[0045] The housing 6 may be configured as shown in FIG. 3, fig. 4 and fig. 5. Housing 6 can be a frame of round or rectangular cross-section, in the center of which there is a cavity for placing filter material 7, and the ends 61 of which are open to allow air to pass through housing 6 and filter material 7.

[0046] In this case, in order to securely fix the housing 6 from the side of one of the bases (2, 5), the housing includes protrusions 6121 parallel to the surface of the housing 6 (longitudinal projections 6121 at the end 612). These projections 6121 include a locking tip that secures the body 6 from one of the bases (2, 5). In an alternative embodiment, similar projections can be made on a larger base 5 or on a fixation element 3.

[0047] Also, to fix the filter material 7 inside the housing 6, transverse projections 6111 can be made on one of the ends 611 of the housing 6, forward along the air flow, i.e. projections 6111, perpendicular to the surface of the housing 6. As an alternative to the projections 6111, a side can be used, the surface of which will be perpendicular to the surface of the housing 6.

[0048] Also, the housing 6 may include transverse projections 6122 at the other end 612 of the housing 6. They may be provided to prevent the filter material 7 from flying out under the air flow. Similar to the transverse projections 6111, these projections 6122 can also be replaced by a bead. Moreover, if the housing 6 of the filter material 7 with the filter material 7 is located on the side of the smaller base 2, the transverse projections 6122 may be absent altogether, because The filter material 7 will in any case be held closed by the smaller base 2.

[0049] In this case, there must be at least two of all types of the above protrusions (6111, 6121, 6122), and they should preferably be located equidistantly. That is, if the body 6 is round in cross section, then in the radial coordinate system the angle between each adjacent protrusion (6111, 6121, 6122) was equal , where n is the number of protrusions (6111, 6121, 6122). This will increase the tightness of the structure due to the fact that such placement will not allow too large a distance between the protrusions intended for fixation.

[0050] In FIG. 1-5 show options for filter 1 and housing 6 of filter material 7 with a round cross-section, which can be used in air channels (ducts) with a round cross-section. In this case, the housing 6 has the shape of a cylinder with hollow ends 61, and the corrugated filter material 4, made gradually expanding, has the shape of a truncated cone. Also in this case, the larger base 5 and the end fixing element 3, as seen in the Figures, have the shape of a ring, and the smaller base 2 has the shape of a circle.

[0051] However, this utility model is also applicable to filters 1 with a rectangular cross-section applicable in rectangular air ducts. So, in FIG. 6 shows filter 1, which has a square cross-section, in isometric view. In this case, the housing 6 has the shape of a rectangular parallelepiped with hollow ends 61, and the corrugated filter material 4, made gradually expanding, has the shape of a truncated pyramid with a square at the base (similarly, there may be other rectangles at the base depending on the geometric dimensions of the cross-section of the channel , which will use filter 1). In this case, the larger base 6 and the fixing element 3 have the shape of a rectangular (in particular, square) frame, and the smaller base 2 has the shape of a rectangle (in particular, a square). Similarly, filter 1 can have other carbon shapes, and possible modifications are obvious from the materials presented.

[0052] However, the preferred option is the one with a circular cross-section because this makes it possible to ensure the taper of the filter material 4, which is used to reduce the pressure drop on the surface of the pleated filter material 4, which further minimizes energy costs for the filtration process, and therefore increases the filtration efficiency.

[0053] It is important to note that in all of the described designs, the locking element 3 is connected to the smaller base 2 using rods or plates, or the smaller base 2 and the locking element 3 may initially be formed as one integral (seamless) piece. It is important that between the side surface of the smaller base 2 and the fixation element 3, holes with a large area are formed for the passage of air.

[0054] In FIG. Figure 7 shows a longitudinal section of the filter 1 in the embodiment of the placement of the housing 6 of the filter material 7 on the side of the smaller base 2. As can be seen from FIG. 7, in this case, the housing 6 is mounted on the end fixing element 3 using longitudinal projections 6121. This option for placing the housing 6 of the filter material 7 is intended for the option of placing the filter 1 in the channel, in which the air flow is directed from the side of the smaller base 2 to the larger one 5 , as shown in Fig. 8.

[0055] As shown in FIG. 8, the air flow (indicated by a dotted line) passes through the filter material 7 and exits through the holes limited by the side surface of the smaller base 2 and the inner surface of the fixation element 3. Then the air passes through the pleated filter material 4, entering it from its outer side surface and exiting from the inner surface. After this, the air flow exits through the larger base 5, which is made open.

[0056] In FIG. Figure 9 shows a longitudinal section of the filter 1 in the variant where the housing 6 of the filter material 7 is placed on the side of the larger base 5. As can be seen from FIG. 9, in this case, the housing 6 is mounted on the larger base 5 also using longitudinal projections 6121. This option for placing the housing 6 of the filter material 7 is intended for the option of placing the filter 1 in the channel, in which the air flow is directed from the side of the larger base 5 to the smaller 2 , as shown in Fig. 10.

[0057] As shown in FIG. 10, the air flow (indicated by the dotted line) passes through the filter material 7 and exits through the end 611. Thereafter, it passes through the open larger base 5. The air then passes through the pleated filter material 4, entering it from its inner side surface and exiting from the outer surface. After this, the air flow exits through the holes limited by the side surface of the smaller base 2 and the inner surface of the fixation element 3.

[0058] Also, the larger base 5 of the filter 1 may include additional elements shown in FIG. 11. Thus, the larger base 5 may additionally include an internal auxiliary element 51, which allows you to conveniently, quickly, without distortions and damage to the frameless channel filter, tightly install the filter 1 into the air channel of the ventilation system, which also further increases the filtration efficiency. Also, if this auxiliary element 51 is present, the housing 6 may not include transverse projections 6122, because auxiliary element 51 will hold filter material 7.

[0059] In addition, the larger base 5 may further include a protruding lip with sealing material (O-ring 52) adhered thereto. This makes it possible to tightly install filter 1 in the air duct of the ventilation system, which does not allow the passage of untreated air.

[0060] Alternatively, the sealing material can be glued directly onto the larger base 5, in which case it is better to make the larger base 5 smaller than the cross-section of the channel. Another alternative is to make a larger base from sealing material. However, in this case it is necessary to select a sufficiently hard closed-cell material capable of holding the pleated filter material 4 (for example, foamed polypropylene, EPP).

[0061] In this case, the pleated filter material 4 can be tightly connected to the smaller 2 and larger 5 bases. The hermetically sealed connection of the corrugated filter material 4 with the smaller base 2 and the larger base 5 eliminates possible leaks of unpurified air, which further increases the filtration efficiency.

[0062] These application materials provide a preferred disclosure of the implementation of the claimed technical solution, which should not be used as limiting other, private embodiments of its implementation, which do not go beyond the scope of the requested legal protection and are obvious to specialists in the relevant field of technology.

Claims (10)

1. A channel filter containing a smaller base with an end fixing element, a corrugated filter material, a larger base, wherein the pleated filter material is made expanding from the smaller base to the larger base, and a housing with a filter material, the degree of purification of which is less, is attached to the base , than the degree of purification of the pleated filter material, in such a way that the filter material with a lower degree of purification is located in front of the pleated filter material along the air flow, and the housing is made with hollow ends. 2. Channel filter according to claim 1, characterized in that on one side of the housing there are at least two protrusions parallel to the surface of the housing, on each of which there is a lock. 3. Channel filter according to claim 2, characterized in that on the other side of the housing there are at least two protrusions perpendicular to the surface of the housing. 4. Channel filter according to claim 2, characterized in that on the side of the housing with longitudinal projections there are additionally at least two projections perpendicular to the surface of the housing. 5. Channel filter according to claim 1, characterized in that a sponge filter material is used as a filter material with a lower degree of purification. 6. Channel filter according to claim 5, characterized in that rigid fiber is used as a pleated filter material. 7. Channel filter according to any one of claims. 1-6, characterized in that the end fixing element and the larger base are made in the shape of a ring, and the body is cylindrical. 8. Channel filter according to claim 7, characterized in that the corrugated filter material, made gradually expanding from a smaller base to a larger base, has the shape of a truncated cone. 9. Channel filter according to any one of claims. 2-4, characterized in that the protrusions are made equidistant along the perimeter of the body. 10. Channel filter according to claim 1, characterized in that the housing with the filter material is fixed on the side of the smaller base.