MANUAL AIR FILTER WINDOW ON VENTILATION AIR INTAKES

Description

MANUAL AIR FILTER WINDOW WRAPPER ON AIR VENTS VENTILATION Scope of application 5 The present invention relates to a manual filter winder for fabric air after using the filter on ventilation air vents, i.e. at conformation of a device that envelops a used air filter, generally in filter fabric with the filter unfolding from the casing and filter support type known, where the used filter is rolled up after its use on the air vent 10 devices for filtering the air drawn in by the mouth. The constitution of the winding device must be versatile for the size of The roll filter used. The manual filter winding device. used realizes the displacement of the filter fabric in order to present new filtering fabric of the filter on the air intake mouth, providing for the 15 collection of the used filter impregnated with dirt filtered from the air. Known art The state of the art includes filters for intake air and exhaust air ventilation in which the roll of filter fabric is housed in an enclosure parallelepiped and sized to contain the rolled roll of filter fabric 20 for the performance. This filter fabric is famously used in suction vents of electrical panels, electronic equipment and similar containers where it is necessary to remove atmospheric dust from the air inlet cooling. The filter fabric is unrolled from the casing placed close to the air vent so as to cover the vent itself to filter 25 the cooling air drawn into the equipment. Moreover, these roll filters they are used continuously or in a timed manner, depending on of the use of the equipment on which they are mounted, but with the need for introduce new fabric to cover the vent to replace the fabric of the filter which during use becomes dirty with dust retained by the aspirated air. 5 The use of the roll filter fabric therefore occurs with continuous maintenance and control of the air filtering capacity in the fabric part filter that covers the said suction mouth. That is, the maintenance technician must periodically check the filtration capacity of the filter fabric and arrange to place new filter fabric to cover the air vent and 10 collect the used filter. In the known art there are winding devices of the filter fabric from a filter fabric dispenser wrapped in a roll as described in document JP 2015213898 A. In it the filter device is equipped with rewinding capable of collecting the filter with electrical control and 15 with the possibility of being mounted in various ways. Devices of this type are also known. dragging of the filter fabric constituting the air filter with exhaust bottom of the used filter and contaminated with particles retained in the air. These mechanized devices are made by simply dragging the fabric filter from the roll as in the document WO 2021014477, with various descriptions 20 dimensional and drag conformations; or with winding of the used fabric filter with electrical drive controlled and monitored by operator settings as known from document IT 102021000001205. These known devices present, given the use of control of the filter winding as the filter is wound with the 25 dragging or motorized winding, a significant cost in relation to the cost of the filter itself and possibly of the casing that contains it and which is replaced at the end of the fabric filter, used and impregnated with dust. In fact, the adoption of filter drag devices automatically occurs in a limited number of applications in the filtration of intake air, 5 while most applications require intervention by the maintenance worker even on an occasional basis, therefore not continuous, i.e. to make the most cost of the automatic device not convenient for the user. In the art, therefore, there are also devices known that allow manual winding of the used filter fabric by means of actuation 10 manual, to make collecting the used filter in a container more practical lower than the point of application, to achieve an improvement over the simplest form of tearing or manually dragging the filter smeared towards the simple deposit on the floor. Furthermore, the commercial use of a winding device is known 15 manual of used filter fabric where the used filter is wound on a reel winding supported at the ends by a sprung pin, to the left of the filter in winding, and a fixed drive pin, on the right; the drive pin dragging is connected to a knob for manual control of rotation actuated by the operator. The said pins are each supported at a 20 specific side of the device and the two sides are joined to a base metal that distances them, to allow the passage of the fabric filter for the winding on the said reel. A telescopic upper presser is housed within grooves shaped in the two sides; said telescopic presser and sprung and slides in grooves between a rest position away from the 25 filter in winding and a working position to determine the point of the filter faces the air vent covered by it, which occurs with special snap-in inserts of the ends of the telescopic presser sprung in the said sides. The said metal base has rear supports for housing permanent magnets to allow 5 the attachment of the device to the surface of the casing, generally ferromagnetic, on which the air vent is present. At the metal base are associated small guide plates of the fabric filter during winding. As illustrated, the main limitation of the advancement solution manual described lies in the combination of the parts of the device 10 winding, the reel can only be arranged according to the positioning of the drag pin and spring-loaded reel guide pin during the winding; that is, at the time of manufacture it is determined whether the winding device winding can be operated from the right or the left, as it cannot be the pins were subsequently reversed; furthermore, the use of metallic materials 15 for the base that distances the sides makes assembly and installation expensive making of various sizes of manual winding device fabric filter, in response to the various needs of mouth shapes of intake air to which the filter can be directed. Furthermore, there are critical the association of the sides to the metal base, the association of the base to it 20 an adequate number of permanent magnets for proper support and adapting the device to the specific size of the filter to be wrapped, It is impractical and therefore very expensive if it is produced from a niche market. must carry out production with large quantities of manual devices winding, which must be able to be made in the required size 25 of the fabric filter for air vents with different sizes, of course making it at low cost. This state of the art is susceptible to advantageous improvements. with regard to the possibility of making a manual air filter winder 5 in fabric after using the filter on ventilation air vents, which exceeds the the aforementioned limitations of the known art making possible a versatility of use and cost reduction as soon as possible for the collection of the woven tape filter when used and contaminated with dirt collected from the filtered air. 10 The technical problem, therefore, which is at the basis of this invention is to make a manual air filter winder in fabric after using the filter on ventilation air vents which is more practical and more versatile than is known in the technique. One purpose inherent in the previous technical problem is to 15 create a manual filter winder which is not only practical but also versatile and also have low production costs, so that it can be created mass production of manual winders. A further and not least aim of the present invention is to create a manual winder that is not only practical and versatile, 20 as well as economical in production, can meet the dimensional requirements that require the user to filter the air in specific air vents dimensions that the fabric filter that will be wrapped needs. Furthermore, a further aspect of the technical problem addressed It also concerns the versatility of a possible fast or slow actuation 25 of the manual winder. Summary of the invention This problem is solved, according to the present invention, by a manual winder of fabric air filter after using the filter on air vents air ventilation present on a machine or electrical apparatus casing 5 requiring filtering of the intake air, including a reel winding supported at the ends by a filter guide pin in winding and a drive pin; the pins are each supported at a special side panel joined to a connection base; a presser transverse slides in grooves between a rest position and a position of 10 work; the connection base has rear housing supports of permanent magnets to allow the device to attach to the surface of the casing, generally ferromagnetic, on which the air ventilation mouth; ears are applied to the connection base to guide the fabric filter during winding; and features each pin, 15 support and guide pin and drag pin equipped with protuberances bayonet-shaped teeth suitable for being inserted indifferently into pin seats present on each of the two sides, a right-hand side and a left side panel shaped in specific pin seats that allow the insertion of the pin, for support and guidance or for dragging, 20 indifferently on one or the other shaped side. In a further construction form the manual winder comprises the serrated protuberances made on the drive pin (22) not removable after insertion into the chosen pin seat at the first user installation. 25 Furthermore, in an improved construction form in which the transverse presser it is inserted with its ends in hollow cams in the shaped sides both the right and left sides form the said grooves. Furthermore, in a further variant of construction form, the presser transverse is held in the working position with tabs 5 positioning presser arranged in hollow cams. Furthermore, in a specific improved implementation the tabs of positioning of the transverse presser are accessible from the outside of the respective shaped side, right or left, through a specific light release tab when removing the fabric filter wrapped on the reel 10 wrap. Furthermore, in a further advantageous construction form, the aforementioned shaped sides, right and / or left, whether glued or differently connected with connections that can be loosened. Even more, in a specific construction form, the connection base 15 is made of a single piece and made of plastic. Furthermore, in an improved construction form, the connection base is made with magnet insertion seats distributed across its surface rear facing the casing. Finally, the manual winder in the plastic construction form 20 previous, present the connection base made from a single mold modular to allow the use of the specific width of fabric filter that must be wound in the manual winder made with it. Further features and advantages of the present invention, in the 25 making a manual fabric air filter winder after using the filter on ventilation air vents, will result from the description, made of followed by a construction and implementation form given for information purposes only and not limiting with reference to the four attached drawing tables. 5 Brief description of the drawings Figure 1 represents a perspective and schematic view of a manual fabric air filter winder ready to be applied to the casing wall with the ventilation air mouth that needs to be filtered; - Figure 2 represents a schematic and perspective front view 10 of the manual winder in exploded form to show the components and their assembly position; - Figure 3 represents a schematic front view of the winder for the collected on a used filter reel, here, however, the Figure is missing the part central, but highlights the extreme parts for the support and dragging of the reel 15 of collection of the soiled fabric filter; the figure shows the overall dimensions of the filter and the reel support and drive pins, shown in section longitudinal at the support and drag points; - Figure 4 represents a schematic top view of the winder and the pins of support, guidance and dragging of the reel, here, moreover, as the 20 previous Figure is missing the central part, but highlights the extreme parts for the support and dragging of the reel and with limited longitudinal sections the shape and positioning of the transverse presser within the sides of the winder; - Figures 5 and 6 represent schematic front perspective views of a 25 wall equipped with an air ventilation opening where a dispenser is placed fabric filter, top, and the winder ready to receive the filter in fabric, Figure 5, while in Figure 6 the fabric filter is extracted from the dispenser and wrapped in the collection reel of the winder, placed below the ventilation opening; 5 - Figure 7 represents a schematic and perspective rear view of the manual winder in exploded form so as to show the components and their assembly position, similar to Figure 2; - Figure 8 represents a schematic view in section VIII-VIII of Figure 3 in way to show the function and insertion of the parts of the winder, of the 10 support pin and guide, and the path of the fabric filter in the winding, as well as the positions assumed by the transverse presser; - Figure 9 represents a schematic view in section IX-IX of Figure 3 in way to show the function and insertion of the winder parts collection reel drive pin with used filter winding, 15 as well as the positions assumed by the transverse presser. Detailed description of an embodiment The Figures show the manual filter winder 1 in fabric 2 on ventilation openings 3 air applied to a generic casing 4 20 with the said air mouth 3 for the passage of the aspirated air A; the fabric filter 2 is extracted from a dispenser 5 of a known type and, after passing in front at the air mouth, Figure 6, is wound on a winding reel 6 with a transverse presser 7, placed in the upper part of the manual winder 1, which keeps the fabric filter 2 correctly positioned on the mouth of 25 ventilation 3 air . The manual winder 1 comprises a connection base 8, made in the size to accommodate the fabric filter in width 2, equipped with two shaped sides, one right 10 and one left 11 connected by means of 13 positioning joints and any connections 5 releasable 14; the said transverse presser 7 is housed in hollow cams 15 present in the internal part of each side shaped 10 and 11 to accommodate the ends 16 of the transverse presser; the hollow cams 15 each It has a tab 17 for positioning the transverse presser 7 which can be released from it through a light 18, present on the external part 10 of each side shaped 10 and 11; in this way the presser transverse 7 can be repositioned to the rear position if necessary 19, Figure 5, and allow the wrapped filter to be removed and positioned in the manual winder 1 a new winding reel of new filter in fabric 2, replaced with the previous one in the said dispenser 5. Usually the 15 known dispensers are equipped with standardized winding reel in the specific width of the fabric filter housed in them. The figures also show the support pins and dragging of the said winding reel 6; each pin, both the pin of support and guide 21, visible housed in the left shaped side panel 11, both 20 the support and drive pin 22, visible housed in the side right-handed 10, has bayonet-shaped serrated protuberances 23 for the insertion into the right 10 or left 11 shaped side panel itself; therefore, each pin is mounted by insertion into a pin seat 24, shaped to fit the bayonet serrated protrusions 23 25 of the respective pins, housing the pin itself; the protuberances serrated 23 and the pin seats 24 are made symmetrical, so as to allow, indifferently, the insertion of a support and guide pin 21 or even a drive pin 22 on the right shaped side 10 or on the contrary on the left shaped side 11; it is thus possible to leave 5 user the decision to have the drag on the right side or on the left side of the manual winder 1. Finally, the end 26 of the support pin is visible in the Figures. and guide 21 which mates with the corresponding end 27 of the said reel winding 6, so the reel has a toothing 28 on the opposite side which 10 couples to the driving teeth 29 of the corresponding pin drag 22 which, in turn, is operated by a knob 30 at the opposite end of the said drive pin 22; a button of crank 31 is present in the said knob 30 to allow the winding Quick, when needed. 32 filter guide ears are also present. 15 in fabric 2 during winding; in the Figures the guide ears are made in one piece with the connection base 8. In the part rear of the connection base, furthermore, various seats 33 are made insertion of 34 permanent magnets which can be positioned at the production, or at the user's choice in the width of the fabric filter 2 20 used or also to reach a gripping position on the casing 4 magnetically more advantageous. In case the surface of the casing 4 is not whether ferromagnetic there are 35 fixing holes in the usual way with screws. Using the manual winder 1 of fabric air filter after 25 the use of the filter on air ventilation openings 3, begins with the insertion of the reel 6 between the support and guide end 26 of the support and guide pin 21 at the end 27 of the winding reel 6; the opposite end of the reel, equipped with teeth 28 is previously inserted into the teeth 29 of dragging the drag pin 22 and then the support and guide pin 5 21 is inserted into the respective seat of the pin 24 with the protuberance serrated 23, keeping the said reel correctly supported winding 6, so as to introduce the support and guide end 26 at the end 27 of the reel with the pin housing. The manual winder 1 is already placed on the wall of the casing 4 in the correct position for 10 receive the fabric filter 2, Figure 5, so the transverse presser 7 is placed in the rear position 19 to allow the passage of the fabric filter 2 towards the winding reel 6. Wrapped the fabric filter 2 on the winding reel the transverse presser 7 is positioned in the advanced working position, where the ends of the presser 16 are held by the tabs of 15 positioning 17 of the presser in the working position. Subsequently the user can drag the fabric filter 2 of the desired quantity by placing it on cover the said air ventilation mouth 3, Figure 6. The speed of User winding can be slow, by directly operating the knob 30, or faster by acting on the crank button 31. 20 The above mentioned use with slow or fast dragging is implemented by the user when necessary when using the fabric filter 2 to filter the aspirated air A of the air ventilation mouth 3. The right or left position of the pin drag 22 is determined when the winder is first assembled manual 1; in fact, even if the protuberances can be made similar 25 bayonet serrations 23 and the pin seat 24 on the respective side right shaped 10 or left shaped side 11, the pin 22 of drag features the so-called bayonet-shaped serrated protuberances 23 which make the release more difficult, precisely to avoid that during the winding of the filter the driving pin can come out of its seat 24. However 5 also called drag pin 22 if made for a possible disassembly after an initial installation can provide for a safer conformation of the said bayonet-shaped serrated protuberances 23 such as make involuntary extraction difficult but not voluntary extraction of the user for choosing the placement of the manual winder 1 on a different 10 air ventilation mouth. The assembly of the manual winder 1 takes place starting from the 8 connection base made, advantageously for single molding piece of plastic material, in the size provided for the width of the filter in fabric 2 which must be wrapped by the winder. The difference in width 15 of the connection base 8 can be advantageously made in modular way, as visible in Figure 7, by inserting into the mold in the part rear of the connection board a greater or lesser number of sockets insertion of permanent magnets, for pre-established dimensions, thus varying the distance between filter guide ears 32, to accommodate and wrap filters in 20 fabric 2 with different width on the respective winding reel 6. The variation in distance between the guide ears of the filter 32 and, consequently, the distance between the right and left shaped sides can also be realized, in a simpler way, even without the presence of said locations insertion 33 of permanent magnets 34, but always making the base of 25 connection 8 checking the actual distance between the said guide ears 32 of the fabric filter 2. The production of a connection board 8, in width intended for a specific fabric filter 2, can advantageously occur with the creation of a mold for the connection board in material 5 plastic that is modular, that is, composable as needed from the size of minimum width and up to the maximum width dimension, to realize different width sizes expected in use and wrap a filter in fabric 2 of a corresponding width. During production assembly, the sides are joined together 10 right 10 and left 11 shaped by inserting the joints 13 present on the faces in combination between the connection base 8 and the respective sides conformed; the union, in the Figures, occurs by tightening the connections releasable 14 so as to position the pin seats 24 in the correct position mutual and at the correct distance from the connection base. Moreover, the 15 this joining operation can be performed in the way shown in the figure, in addition to strong bonding so as to make the union between the baseboard itself non-releasable connection and the respective shaped sides. The advantages of using a manual air filter reel in fabric after using the filter on ventilation air vents can be 20 summarize as follows. Production of parts is limited to connection board 8, in the width dimension suitable for the width of the fabric filter 2 which must be wrapped; the two shaped sides are produced identically, in the their different right 10 or left 11 conformation, for all sizes in 25 width of the fabric filter 2 collected by the winder and the support pins and guide 21 and drag 22 are products and supplied to the user not included in the seats 24 of each pin, the transverse presser is a simple tube made in the width necessary for the insertion of its ends 16 within the hollow cams 15 of the shaped sides and in the specific width of the filter in 5 fabric 2 that needs to be wrapped. In editing the user chooses which side he wants to drag to and introduces the corresponding pin 22 into the seat 24 by rotating the protuberances bayonet serrations 23 making the said drive pin rotating in the location chosen by him and, therefore, only when assembling the empty winding reel 6 10 also the opposite guide and support pin 21. To make it operational the winder 1, the user positions the connection base 8, equipped with a appropriate number of permanent magnets 34, in the position below the mouth of air ventilation 3 to be protected. For use, the user mounts the winding reel 6, first introducing 15 the end with the teeth 28 mating with the teeth 29 of the pin 22 of dragging, then introducing the support and guide pin 21 into the end 27 of the reel, taking care to position it through the seat 24 of the side shaped on which it is to be mounted, keeping it in position after the rotation of the bayonet serrated protuberances 23. 20 In this way the user has a manual filter winder in fabric 2 simple to assemble and versatile in the possible choice of where place it and control it. So also the shape of the knob 30, with crank button 31, allows for further ease of use by the user by being able to maneuver the fabric filter 2 with a slow or even fast advancement on the 25 air ventilation mouth 3. Furthermore, a significant advantage in defining the overall cost of the manual winder 1 is determined by the modular construction of the connection base 8, which if made of plastic allows for also reduce the cost of the molding equipment, creating a 5 modular mould with modules which, when assembled, determine the width specification of the connection board and, therefore, of the width of the filter in fabric 2 which will be wound with the manual winder 1 when mounted. An additional advantage can be found in the complete production of plastic parts excluding fixing screws 10 magnets and possibly 14 releasable connection organs between the connection base and the respective shaped sides. Of course, to a manual fabric air filter winder after using the filter on ventilation air vents, as described above, a 15 technician of the branch, in order to satisfy specific and contingent needs, will be able to make numerous changes, all of which are within the scope of protection of this invention as defined by the following claims. In fact, although less conveniently, in addition to the aforementioned possible gluing of the sides to the connection base, indeed also 20 one side glued and the other fixed with a connection if necessary dissolvable 14, even the filter guide ears 32 can be made separately and applied to the connection base during assembly; furthermore, the connection base can also be made of metal with the aforementioned guide ears as a single piece or even mounted separately.

Claims

CLAIMS 1. Manual winder for fabric air filters (2) after use of the filter on air ventilation openings (3) present on a casing (4) of machinery or electrical apparatus which requires filtering of the aspirated air, comprising: a winding reel (6) supported at the ends by a guide pin for the filter being wound and a driving pin; the pins are each supported on a specific side joined to a connection base; a transverse presser slides in grooves between a rest position (19) and a working position; the connection base has supports at the rear for housing permanent magnets to allow the device to grip the surface of the casing, generally ferromagnetic, on which the air ventilation opening is present; guide ears for the fabric filter during winding are applied to the connection base;characterised by what each pin has, support and guide pin (21) and drag pin (22) equipped with bayonet-shaped serrated protuberances (23) suitable for being inserted indifferently into pin seats present in each of the two sides, a right-hand shaped side (10) and a left-hand shaped side (11) in specific pin seats (24) which allow the insertion of the pin, support and guide (21) or drag pin (22), indifferently on one or the other shaped side.; 2. Manual fabric air filter winder, according to the previous claim 1, wherein the serrated protuberances (23) made on the drive pin (22) cannot be removed after insertion into the seat of the pin (24) chosen by the user at the first installation.

3. Manual fabric air filter winder, according to a previous claim 1, 2, wherein the transverse presser (7) is inserted with its ends (16) in hollow cams (15) in the sides shaped both on the right (10) and on the left (11) to form the said grooves.

4. Manual fabric air filter winder, according to a preceding claim 1, 2 or 3, wherein the transverse presser (7) is held in the working position with presser positioning tabs (17) arranged in hollow cams (15).

5. Manual winder for fabric air filters, according to the previous claim 4, wherein the positioning tabs of the transverse presser (7) are accessible from the outside of the respective shaped side, right (10) or left (11), via a specific tab release light (18) when the fabric filter (2) is removed from the winding reel (6).

6. Manual fabric air filter winder, according to a previous claim, wherein the transverse presser (7) consists of a simple tube.

7. Manual fabric air filter winder, according to a previous claim, wherein the aforementioned shaped sides, right (10) - 18 owner NITTY-GRITTY SRL Ing. Alberto Gasparini and / or left (11), are glued or differently connected with possibly detachable connections (14).

8. Manual fabric air filter winder, according to a previous claim, wherein the connection base (8) is made in a single piece and of plastic material.

9. Manual fabric air filter winder, according to the previous claim 8, wherein the connection base (8) is made 10 with magnet insertion seats (33) distributed on its rear surface facing the casing (4).

10. Manual winder for fabric air filter, according to a preceding claim 8 or 9, wherein the connection base (8) is 15 made from a single modular mould to allow the use of the specific width of fabric filter (2) which is to be wound in the manual winder (1) made therewith.