Magnetic cover for air filter box

Abstract

Apparatus and method for a magnetic cover for an air filtration system in an internal combustion engine are provided. The air filtration system includes a housing having an interior for housing an air filter. A mounting portion comprising the housing supports the air filter. A magnetic cover surrounds the interior of the housing. An edge surrounding the opening of the housing forms an airtight connection with the edge of the magnetic cover. The edge of the housing includes a number of magnets that attach to a similar number of magnets on the edge of the magnetic cover to establish an airtight connection. A seal provides an airtight connection between the housing and the magnetic cover. The housing and magnetic cover are configured to allow the magnetic cover to be removed from the housing by hand.

Description

Technical Field

[0001] Priority This application claims the benefit and priority of the U.S. patent application titled "Magnetic Cover for Air Filter Box" filed on June 30, 2023, with Application No. 18 / 217,306, the entire disclosure of which is incorporated herein by reference.

[0002] Field Embodiments of the present disclosure generally relate to filtration devices. More specifically, embodiments of the present disclosure relate to devices and methods for magnetic covers for air filtration systems in internal combustion engines.

Background Art

[0003] Air filters designed to remove particulate matter are generally devices composed of fibrous materials. These fibrous materials can remove solid particulate matter such as dust, pollen, mold, and bacteria from the air. Air filters are used in applications where air quality is important, particularly in building ventilation systems and engines.

[0004] Air filters can be used in automobiles, trucks, tractors, locomotives, and other vehicles that use internal combustion engines. Air filters can be used with gasoline engines, diesel engines, or other engines that operate on fossil fuels or other combustible substances. Air filters can be used with engines in which combustion is intermittent, such as four-stroke and two-stroke piston engines, as well as other types of engines that take in air so that a combustible substance can be burned. For example, air filters can be used with some gas turbines. Filters can also be used with air compressors or other devices that take in air.

[0005] Filters can be made from pleated paper, foam, cotton, spun fiberglass, or other known filter materials. Generally, the air intakes of internal combustion engines and compressors tend to use paper filters, foam filters, or cotton filters. Some filters use an oil bath. Air filters for internal combustion engines prevent abrasive particulate matter from entering the engine's combustion cylinders, which, if they enter the combustion cylinders, cause mechanical wear and oil contamination. Many fuel injection engines utilize flat-panel pleated paper filter elements. These filters are typically located inside a sealed plastic airbox connected to the throttle body by ductwork. Vehicles using carburetor or throttle body fuel injection systems generally use cylindrical air filters located above the carburetor or throttle body.

[0006] A drawback of conventional sealed airboxes using flat-panel paper filters is that as certain substances accumulate within the filter, the airflow through the filter becomes restricted. Such restricted airflow generally leads to reduced engine performance, such as decreased engine power and increased fuel consumption. Furthermore, as the paper filter becomes increasingly clogged, the pressure below the filter decreases while the atmospheric pressure outside the filter remains the same. If the pressure difference becomes too large, contaminants may be drawn directly into the engine through the paper filter. Therefore, the paper filter's ability to protect the engine from contamination and internal damage tends to decrease near the end of its service life. Generally, paper air filters are removed from vehicles and discarded, and then new paper air filters are installed. Considering that there are millions of vehicles worldwide, the amount of discarded air filters that could end up in landfills is staggering.

[0007] Many current air filters are of the reusable type, and instead of discarding the entire air filter as is done with conventional air filters, practitioners are required to periodically clean the air filters for reuse. Generally, such reusable air filters must be removed from the air filter box that houses them before the filter can be cleaned. Often, removing the air filter requires disconnecting the air duct that is connected to the air filter box before the air filter box can be opened to remove the air filter. Once cleaned, the air filter must be reinstalled in the air filter box before the air filter box is closed and any air ducts can be reconnected to the air filter box. As can be understood, many practitioners may conclude that cleaning air filters is too complicated, thereby hindering the widespread adoption of reusable air filters. Therefore, what is needed is an air filtration system that simplifies the removal and reinstallation of air filters. [Overview of the project] [Problems that the invention aims to solve]

[0008] [Means for solving the problem]

[0009] Apparatus and method for a magnetic cover for an air filtration system in an internal combustion engine are provided. The air filtration system includes a housing having an interior configured to accommodate an air filter. A mounting portion comprising the housing is configured to support the air filter. A magnetic cover surrounds the interior of the housing. An edge surrounding the opening of the housing is configured to form an airtight connection with the edge of the magnetic cover. The edge of the housing includes a number of magnets that attach to a similar number of magnets positioned along the edge of the magnetic cover to establish an airtight connection. A seal positioned between the edge of the housing and the edge of the magnetic cover provides an airtight connection between the edge and the magnetic cover. The housing and magnetic cover are configured to facilitate removal of the magnetic cover from the housing by a worker using their hands.

[0010] In a typical embodiment, an air filtration system for an internal combustion engine comprises a housing with an air filter box having an interior configured to house an air filter, a mounting portion configured to support the air filter, a magnetic cover surrounding the interior, and an inlet that allows airflow to enter the interior.

[0011] In another typical embodiment, the housing includes an opening configured to provide access to an internal air filter. In another typical embodiment, a rim surrounding the opening is configured to form an airtight connection with the rim of the magnetic cover. In another typical embodiment, a seal is configured to be positioned between the rim and the rim of the magnetic cover. In another typical embodiment, the seal is configured to provide an airtight connection between the rim and the rim of the magnetic cover.

[0012] In another typical embodiment, the edge includes a first set of magnets configured to attach to a second set of magnets positioned along the edge of the magnetic cover to establish an airtight connection. In another typical embodiment, one or more of the first set of magnets and the second set of magnets constitute neodymium magnets. In another typical embodiment, the first set of magnets and the second set of magnets each comprise four magnets. In another typical embodiment, the magnetic cover includes a magnetic material configured to attach to the first set of magnets.

[0013] In another typical embodiment, the housing includes at least one recess configured to facilitate the removal of the magnetic cover from the housing by a practitioner using their hands. In another typical embodiment, the at least one recess comprises a first recess and a second recess located near both sides of the magnetic cover. In another typical embodiment, the housing includes a plurality of structural supports configured to increase the rigidity of the housing to withstand the stresses that occur when the magnetic cover is pulled from the housing. In another typical embodiment, the plurality of structural supports include a plurality of ribs located near one or more of the first recess and the second recess.

[0014] In another typical embodiment, the mounting portion is configured to establish an airtight connection with the base of the air filter. In another typical embodiment, the mounting portion is configured to house a seal comprising a base. In another typical embodiment, the mounting portion includes screw holes for housing fasteners for connecting the base to the mounting portion.

[0015] In another typical embodiment, the inlet is configured to accommodate conduits constituting an internal combustion engine. In another typical embodiment, the inlet is configured to allow airflow to exit the conduits and enter the interior of the housing. In another typical embodiment, the inlet includes a flange for accommodating the conduits. In another typical embodiment, the flange includes a cross-sectional shape and size for accommodating the interior of the conduits. In another typical embodiment, the flange includes one or more of the following surface features: ridges, projections, lips, and other features configured to engage with the conduits.

[0016] In another typical embodiment, the magnetic cover comprises a rigid material that is durable and heat-resistant enough to maintain its configuration during installation and operation when coupled with the housing. In another typical embodiment, the magnetic cover comprises an injection-molded material and a plurality of magnets arranged along the edge of the magnetic cover to attach to a plurality of magnets arranged along the edge surrounding an opening into the interior of the housing. In another typical embodiment, the magnetic cover comprises a metallic material that can magnetically attach to a plurality of magnets arranged along the edge surrounding an opening into the interior of the housing. In another typical embodiment, the metallic material comprises a thermal coating to give the magnetic cover heat resistance properties. In another typical embodiment, the magnetic cover has a shape and size that is adapted to engage with the edge surrounding an opening into the interior of the housing.

[0017] In a typical embodiment, a method for an air filtration system for an internal combustion engine includes forming a housing comprising an air filter box having an interior configured to house an air filter; configuring a mounting portion to support the air filter; forming a magnetic cover to surround the interior; and arranging an inlet to allow airflow to enter the interior.

[0018] In another typical embodiment, forming the housing includes configuring an opening to provide access to an internal air filter. In another typical embodiment, configuring the opening includes configuring a rim surrounding the opening to form an airtight connection with the rim of the magnetic cover. In another typical embodiment, configuring the rim includes arranging a first plurality of magnets along the rim to attach to a second plurality of magnets positioned along the rim of the magnetic cover to establish an airtight connection.

[0019] In another typical embodiment, forming the housing includes configuring at least one recess to facilitate the removal of the magnetic cover from the housing by hand. In another typical embodiment, configuring at least one recess includes locating a first recess and a second recess near both sides of the magnetic cover. In another typical embodiment, forming the housing includes configuring multiple structural supports to increase the rigidity of the housing to withstand the stresses that occur when a practitioner pulls the magnetic cover from the housing. In another typical embodiment, configuring multiple structural supports includes locating multiple ribs near one or more of the first recess and the second recess.

[0020] In another typical embodiment, configuring the mounting portion includes configuring the mounting portion to establish an airtight connection with the base of the air filter. In another typical embodiment, configuring the mounting portion includes configuring the mounting portion to accommodate a seal comprising the base. In another typical embodiment, configuring the mounting portion includes forming screw holes for accommodating fasteners for connecting the base to the mounting portion.

[0021] In another typical embodiment, configuring the inlet includes configuring the inlet to accommodate a conduit constituting an internal combustion engine so that airflow can exit the conduit and enter the interior of the housing. In another typical embodiment, configuring the inlet includes configuring a flange to have a cross-sectional shape and size for accommodating the interior of the conduit. In another typical embodiment, configuring the flange includes incorporating one or more of the following surface features into the flange: a ridge, a projection, a lip, and other surface features that engage with the conduit.

[0022] In another typical embodiment, forming the magnetic cover involves forming a rigid material that is durable and heat-resistant enough to hold its configuration during installation and operation when coupled with the housing. In another typical embodiment, forming the magnetic cover involves injection molding a material into a magnetic cover and arranging multiple magnets along the edge of the magnetic cover to attach to multiple magnets arranged along the edge surrounding the opening into the housing. In another typical embodiment, forming the magnetic cover involves manufacturing a metallic material that can magnetically attach to multiple magnets arranged along the edge surrounding the opening into the housing. In another typical embodiment, manufacturing the metallic material involves applying a thermal coating to give the magnetic cover heat resistance. In another typical embodiment, forming the magnetic cover involves fitting the shape and size to engage with the edge surrounding the opening into the housing.

[0023] These and other features of the concepts provided herein may be better understood in relation to the drawings, the text of the specification, and the appended claims.

[0024] The drawings refer to embodiments of the present disclosure. [Brief explanation of the drawing]

[0025] [Figure 1]An isometric view of a typical embodiment of an air filtration system including an air filter box and a magnetic cover surrounding the air filter box according to the present disclosure is shown. [Figure 2] An enlarged detailed view of FIG. 1 showing a magnet disposed between the magnetic cover and the air filter box according to the present disclosure. [Figure 3] A flowchart showing a typical embodiment of a method for constructing an air filtration system including an air filter box and a magnetic cover surrounding the air filter box according to the present disclosure.

Embodiments for Carrying Out the Invention

[0026] Although the present disclosure is subject to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and are described in detail herein. It should be understood that the present disclosure is not limited to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure.

[0027] The following description includes numerous specific details to provide a complete understanding of the disclosure. However, as those skilled in the art will see, the air filtration systems and methods disclosed herein may be implemented without these specific details. In other cases, certain numerical references, such as “first air filter,” may be given. However, certain numerical references should not be interpreted as a literal sequential order, and “first air filter” should be interpreted as being different from “second air filter.” Thus, the specific details described are merely typical examples. The specific details may be modified from the technical concept and scope of the disclosure, or may be considered to be within the technical concept and scope of the disclosure. The term “combined” is defined as being directly connected to a component or indirectly connected to a component via another component. Furthermore, as used herein, the terms “about,” “approximately,” or “substantially,” with respect to any numerical value or range, indicate appropriate dimensional tolerances that enable some or all of the components to function for their intended purpose as described herein.

[0028] Many current air filters are of a reusable type, and instead of discarding the entire air filter as is done with conventional air filters, practitioners are required to periodically clean the air filter for reuse. Generally, such reusable air filters must be removed from the air filter box that houses the air filter before the filter can be cleaned. Often, removing the air filter requires removing the air duct that is coupled to the air filter box before the air filter box can be opened to remove the air filter. Once cleaned, the air filter must be reinstalled in the air filter box before the air filter box is closed and any air ducts can be reconnected to the air filter box. As can be understood, many practitioners may conclude that cleaning air filters is too complicated, thereby hindering the widespread adoption of reusable air filters. Embodiments presented herein provide apparatus and methods for an air filtration system including a magnetic cover that facilitates the removal and reinstallation of an air filter for an internal combustion engine.

[0029] Figure 1 shows a typical embodiment of an air filtration system 100 according to this disclosure, comprising an air filter box 104 and a magnetic cover 108 surrounding the air filter box 104. The air filter box constitutes a housing 104 having an interior 112 configured to house an air filter 114. The air filter 114 may generally be a variety of conical air filters as shown in Figure 1, but it should be noted that the embodiments disclosed herein are not limited to conical air filters. Rather, the housing 104 may be configured to house any of a wide variety of substantially enclosed air filter shapes, such as cylindrical, circular, elliptical, round, curved, conical, or any other closed outer shape, which give a relatively large surface area in a filter of a given volume. Furthermore, the embodiments described herein are not limited to use in internal combustion engines, and rather, the air filtration system 100 may be applicable to other filtration systems where large volumes of air require processing.

[0030] As shown in Figure 1, the housing 104 includes an opening 116 configured to provide access to the internal air filter 114 112. An edge 120 surrounding the opening 116 is configured to form an airtight connection with an edge 124 of the magnetic cover 108. Furthermore, a seal (not shown) may be positioned between the edge 120 and the edge 124 of the magnetic cover 108. As understood, the seal may be configured to provide an airtight connection between the edges 120, 124. In some embodiments, the seal may be incorporated into either of the edges 120, 124, but is not limited to this.

[0031] Continuing to refer to Figure 1, the edge 120 includes a first plurality of magnets 128 configured to attach to a second plurality of magnets positioned along the edge 124 of the magnetic cover 108 to establish an airtight connection between the housing 104 and the magnetic cover 108. In the illustrated embodiment, the first plurality of magnets 128 and the second plurality of magnets (not shown) each comprise four magnets. However, it should be understood that the first plurality of magnets 128 and the second plurality of magnets may comprise any number of magnets, and are not limited. In some embodiments, for example, at least a portion of the magnetic cover 108 may include a magnetic material configured to attach to the first plurality of magnets 128. Furthermore, it is conceivable that the first plurality of magnets 128 and the second plurality of magnets may comprise any suitable magnetic material, and are not limited. In some embodiments, for example, one or more of the first plurality of magnets 128 and the second plurality of magnets constitute neodymium magnets.

[0032] The magnetic cover 108 generally comprises a rigid material that is durable and heat-resistant enough to maintain its configuration during installation and operation when coupled with the housing 104. Furthermore, the magnetic cover 108 generally comprises a shape and size adapted to engage with the edge 120 surrounding the opening 116 to the interior 112 of the housing 104. In some embodiments, the magnetic cover 108 comprises an injection-molded material such as plastic, ABS, or other suitable material. Furthermore, a first plurality of magnets (not shown) may be molded or bonded along the edge 124 of the magnetic cover 108 to a plurality of magnets 128 arranged along the edge 120 of the housing 104. However, in some embodiments, the magnetic cover 108 may comprise a metallic material to which the first plurality of magnets 128 arranged along the edge 120 of the housing 104 can magnetically attach. In such embodiments, the metallic material may comprise a thermal coating to give the magnetic cover 108 heat resistance properties.

[0033] In the embodiment shown in Figure 1, the housing 104 includes a first recess 132 and a second recess 136 located near both sides of the opening 116. The recesses 132 and 136 are configured to facilitate the removal of the magnetic cover 108 from the housing 104 using the hands. However, the housing is not limited to including two recesses 132 and 136; rather, any number of recesses may be incorporated into the housing 104 near the opening 116. For example, in some embodiments, the housing 104 may include only one recess 132 to allow the hands to lift the magnetic cover 108 from the housing 104.

[0034] Furthermore, in some embodiments, the housing 104 may include a plurality of structural supports configured to increase the rigidity of the housing 104. The structural supports may be configured so that the housing 104 can withstand the stresses that occur when a practitioner pulls the magnetic cover 108 through the opening 116. As shown in Figure 1, the plurality of structural supports may comprise a plurality of ribs 138 located near one or both of the first recess 132 and the second recess 136.

[0035] As shown in Figure 1, the housing 104 includes a mounting section 140 and an inlet 144. The mounting section 140 is configured to establish an airtight connection with the air filter 114. As understood, the mounting section 140 includes an opening 148 that helps direct the filtered airflow from inside the air filter 114 to the air intake of the internal combustion engine. The mounting section 140 surrounding the opening 148 may be configured to accommodate a seal (not shown) comprising the base of the air filter 114. For example, the mounting section 140 may include a screw hole 152 for accommodating fasteners for coupling the base of the air filter 114 to the mounting section 140 so that the inside of the air filter 114 is in fluid communication with the opening 148. Further details relating to coupling the base of the air filter 114 to the mounting section 140 can be found in U.S. Patent No. 11,478,739, granted on October 25, 2022, entitled “Flangeless Air Filter,” which is incorporated herein by reference in its entirety.

[0036] Continuing to refer to Figure 1, the inlet 144 is configured to accommodate a conduit (not shown) that constitutes an internal combustion engine. The inlet 144 is generally configured to allow the incoming airflow to exit the conduit and enter the interior 112 of the housing 104. In the illustrated embodiment, the inlet 144 includes a flange 156 for accommodating the conduit. The flange 156 includes a cross-sectional shape and size for accommodating the interior of the conduit. The flange 156 may include, but is not limited to, one or more of the following surface features: ridges, projections, lips, and other features configured to engage with the conduit.

[0037] Figure 3 is a flowchart showing a typical embodiment of a method 160 for configuring an air filtration system 100 comprising an air filter box 104 and a magnetic cover 108 surrounding the air filter box, according to the present disclosure. Method 160 begins with step 164 (see Figure 1) which includes forming a housing 104 that constitutes an air filter box having an interior 112 configured to house an air filter 114. In some embodiments, forming the housing 104 includes configuring an opening 116 that provides access to the air filter 114 in the interior 112. Step 164 may also include, in some embodiments, configuring an edge 120 that surrounds the opening 116 to form an airtight connection with an edge 124 of the magnetic cover 108. Furthermore, configuring the edge 120 may also include, in some embodiments, arranging a first plurality of magnets 128 along the edge 120 so as to attach to a second plurality of magnets arranged along the edge 124 of the magnetic cover 108 to establish an airtight connection.

[0038] Furthermore, in some embodiments, step 164 may include configuring at least one recess 132 on the housing 104 to facilitate the removal of the magnetic cover 108 from the housing 108 by a practitioner using their hands. In some embodiments, configuring at least one recess includes locating a first recess 132 and a second recess 136 near both sides of the magnetic cover 108. Furthermore, in some embodiments, forming the housing 104 includes configuring a plurality of structural supports to increase the rigidity of the housing 104 to withstand the stresses that occur when a practitioner pulls the magnetic cover 108 from the housing 104. In some embodiments, configuring a plurality of structural supports includes locating a plurality of ribs 138 near one or more of the first recess 132 and the second recess 136.

[0039] Step 168 may, in some embodiments, include configuring a mounting portion 140 for supporting the air filter 114. In some embodiments, configuring the mounting portion 140 includes configuring the mounting portion 140 to establish an airtight connection with the base of the air filter 114. Furthermore, in some embodiments, step 168 may include configuring the mounting portion 140 to accommodate a seal comprising the base. In some embodiments, configuring the mounting portion 140 may include forming screw holes 152 for accommodating fasteners for connecting the base to the mounting portion 140.

[0040] As shown in Figure 3, step 172 of method 160 may include forming a magnetic cover 108 to surround the interior 112 of the housing 104. In some embodiments, forming the magnetic cover 108 may include forming a rigid material that is durable and heat-resistant enough to hold its configuration during installation and operation when coupled with the housing 104. Furthermore, forming the magnetic cover 108 may include shaping and sizing it to engage with the edges 120 surrounding the opening 116 to the interior 112 of the housing 104.

[0041] In some embodiments, forming the magnetic cover 108 involves injection molding a material into the magnetic cover 108 and arranging a plurality of magnets along the edge 124 of the magnetic cover 108 so as to attach to a plurality of magnets 128 arranged along the edge 120 surrounding the opening 116 to the interior 112 of the housing 104. However, in some embodiments, forming the magnetic cover 108 involves manufacturing a metallic material that can magnetically attach to the plurality of magnets 128 arranged along the edge 120 surrounding the opening 116 to the interior 112 of the housing 104. Manufacturing the metallic material may, in some embodiments, involve applying a thermal coating to give the magnetic cover 108 heat resistance properties.

[0042] Step 176 of Method 160 includes, in some embodiments, arranging an inlet 144 to allow airflow to enter the interior 112. Arranging the inlet may, in some embodiments, include configuring the inlet 144 to accommodate a conduit constituting an internal combustion engine so that airflow can exit the conduit and enter the interior 112 of the housing 104. Configuring the inlet 144 includes, in some embodiments, configuring a flange 156 to have a cross-sectional shape and size for accommodating the interior of the conduit. In some embodiments, configuring the flange 156 includes incorporating one or more of the following surface features into the flange 156: a ridge, a projection, a lip, and other surface features that engage with the conduit.

[0043] While air filtration systems and methods are described with respect to specific modifications and illustrative figures, the air filtration systems are not limited to the described modifications or figures, as will be recognizable to those skilled in the art. Furthermore, where the aforementioned methods and steps describe specific events performed in a specific order, the order of the specific steps may be changed, as will be recognizable to those skilled in the art, and such changes are in accordance with modifications of the air filtration systems. Furthermore, some of the steps may be performed simultaneously in parallel processing, if possible, or sequentially as described above. To the extent that there are modifications of air filtration systems that are within the scope of the technical concept of this disclosure or equivalent to the air filtration systems found in the claims, this patent is intended to encompass those modifications as well. Accordingly, this disclosure should be understood not to be limited by the specific embodiments described herein, but only by the appended claims.

Claims

1. A housing comprising an air filter box having an interior configured to house an air filter, A mounting part configured to support the air filter, A magnetic cover surrounds the interior, An inlet that allows airflow to enter the interior, An air filtration system for internal combustion engines, equipped with the following features.

2. The system according to claim 1, wherein the housing includes an opening configured to provide access to an internal air filter.

3. The system according to claim 2, wherein the edges surrounding the opening are configured to form an airtight connection with the edges of the magnetic cover.

4. The system according to claim 2, wherein the seal is configured to be positioned between the edge and the edge of the magnetic cover.

5. The system according to claim 4, wherein the edge includes a plurality of first magnets configured to attach to a plurality of second magnets positioned along the edge of the magnetic cover in order to establish an airtight connection.

6. The system according to claim 4, wherein the magnetic cover includes a magnetic material configured to attach to a plurality of first magnets.

7. The system according to claim 1, wherein the housing includes at least one recess configured to facilitate the removal of the magnetic cover from the housing by a worker using their hand.

8. The system according to claim 7, wherein at least one recess comprises a first recess and a second recess located near both sides of the magnetic cover.

9. The system according to claim 1, wherein the magnetic cover comprises a rigid material that is durable and heat-resistant enough to maintain its configuration during installation and operation when coupled with the housing.

10. The system according to claim 9, wherein the magnetic cover comprises an injection-molded material and a plurality of magnets arranged along the edge of the magnetic cover so as to attach to a plurality of magnets arranged along the edge surrounding an opening into the interior of the housing.

11. The system according to claim 10, wherein the magnetic cover includes a metallic material that can magnetically attach to a plurality of magnets arranged along an edge surrounding an opening into the interior of the housing.

12. A method for an air filtration system for an internal combustion engine, To form a housing that includes an air filter box having an interior configured to house an air filter, The mounting section is configured to support the air filter, Forming a magnetic cover to surround the interior, To position an inlet that allows airflow to enter the interior, A method that includes this.

13. The method according to claim 12, wherein forming the housing includes configuring an opening to provide access to an internal air filter.

14. The method according to claim 13, wherein forming an opening includes forming an edge that surrounds the opening so as to form an airtight connection with the edge of the magnetic cover.

15. The method according to claim 14, wherein forming the edge includes arranging a plurality of first magnets along the edge so as to attach to a plurality of second magnets arranged along the edge of the magnetic cover in order to establish an airtight connection.

16. The method according to claim 12, wherein forming the housing includes configuring at least one recess to facilitate the removal of the magnetic cover from the housing by a practitioner using their hands.

17. The method according to claim 16, wherein forming at least one recess includes arranging a first recess and a second recess near both sides of the magnetic cover.

18. The method according to claim 12, wherein forming a magnetic cover involves forming a rigid material that is durable and heat-resistant enough to hold its configuration during installation and operation when coupled with a housing.

19. The method according to claim 18, wherein forming the magnetic cover includes injection molding a material into the magnetic cover and arranging a plurality of magnets along the edge of the magnetic cover so as to attach to a plurality of magnets arranged along the edge surrounding an opening into the interior of the housing.

20. The method according to claim 19, wherein forming a magnetic cover involves manufacturing a metallic material that can magnetically attach to a plurality of magnets arranged along an edge surrounding an opening into the interior of the housing.

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