Disposal facility for dust-laden air

Abstract

Extraction device (1) for the disposal of dust-laden air, in particular during renovation work, for example bathroom renovations, comprising a housing (2) and a blower (31) for the extraction of the dust-laden air, wherein the housing (2) has at least a first opening as an air inlet opening (5) and a second opening as an air outlet opening (33) and has a hinged or removable lid (3), wherein the lid (3) consists of two lid halves which are arranged to be hinged laterally outwards in order to open a top of the housing (2), characterized in that a housing opening can be closed by a cutting board attachment (20), wherein the cutting board has a frame (21) which can be inserted into the housing opening (2) or placed on the housing (2) and has two spaced-apart support boards (22, 23) which are arranged such that a gap is present in the middle.

Description

The invention relates to an extraction device for the disposal of dust-laden air, in particular during renovation work, for example bathroom renovations, comprising a housing and a blower for the extraction of the dust-laden air, wherein the housing has at least a first opening as an air inlet opening and a second opening as an air outlet opening and has a hinged or removable lid. Whenever renovation work is necessary, it usually involves a high level of dust. For example, when renovating a bathroom, the existing tiles typically have to be removed, and channels may need to be cut into the walls for new pipes, resulting in a significant amount of dust. Since this is usually fine dust, it enters every room of an apartment or house through the entrance doors. Even the use of dustproof doors, which are typically sealed airtight with adhesives around the door frame, cannot prevent the fine dust from spreading to the other rooms. It is known from the prior art to close door openings and, if necessary, window openings and to work with a negative pressure in the room concerned in order to reduce the spread of dust particles. Although the dust pollution is largely over once the preparatory work is completed by removing the tiles and chiseling out wall slots, fine dust is again generated when cutting tiles, processing tile adhesives or other powdered substances, which can also lead to a significant dust pollution. An extraction device for disposing of dust-laden air, especially during renovation work, is known from the following URLs: https: / / www.youtube.com / watch?v=qmhIOf7gqaQ or https: / / www.sbz-online.de / sanitaer / scheelen-saubere-luftbei-der-badsanierung. From EP 1 382 285 A2, a storage box for vacuum cleaner accessories and an integrated vacuum cleaner are known, as well as an insert tray that can hold small parts. A second embodiment discloses a platform which, in addition to being used for cutting pipes or similar materials, is equipped with a V-shaped groove. The present invention is based on the objective of providing a universally usable extraction device which can be used to remove dust-laden air and can also be used for other tasks. According to the invention, to solve the problem, the lid consists of two lid halves which are arranged to fold outwards to the sides in order to open the top of the housing. The housing opening is accessed via a cutting board attachment, comprising a frame which can be inserted into the opening of the housing or placed on top of the housing, and two spaced-apart support boards arranged such that a gap is present in the middle. Further advantageous embodiments are described in the dependent claims. A blower is provided to extract the dust-laden air. This blower draws in air through at least one opening (the air inlet) and expels it through a second opening (the air outlet). The housing is also designed with a hinged or removable lid to open the top. This lid allows the housing to be converted into a worktable or stable base, for example, for cutting tiles or using it as a step. For this purpose, the housing opening can be closed with a cutting board attachment or a non-slip cover plate. The cutting board attachment is used for cutting tiles and can also be used to drill holes, for example, to place tiles on pipes protruding from the walls. The dust generated during this process can also be extracted and removed by the blower.The versatility of the housing is further enhanced by the option of using a non-slip cover plate instead of a cutting board attachment. By inserting the cover plate into or onto the housing opening, the housing can be used as a safe platform for tradespeople, enabling them to perform tasks at ceiling height, for example. Both the cutting board attachment and the non-slip cover plate rest on a surrounding shoulder of the housing, allowing any loads to be transferred directly to the floor. Alternatively, the cover plate or cutting board attachment can be positioned overhanging the housing. Due to its material thickness, the cover plate is suitable for demanding applications and can easily withstand loads exceeding 200 kg.When using the cover plate, the blower can remain running and extract the dust-laden air. The process is similar when using the cutting board attachment, as fine dust is also generated in this case. This dust is also drawn in by the blower and directed through the second opening, which serves as the air outlet. The fine dust can then fall between the cutting board supports into a funnel or a slanted guide surface that is open at the bottom, from where it is extracted. The particular advantage of the present invention is that tradespeople working in the rooms being renovated can do so without dust masks, because the air is sufficiently cleaned by the extraction of the dust-laden air. Furthermore, an advantage lies in the negative pressure created in the rooms, which causes air to enter the room being renovated through an existing window or door gap, thus preventing dust particles from escaping due to the airflow directed towards the room. Moreover, such an extraction device is inexpensive to manufacture and requires little maintenance, as there is no need for regularly replacing filters. In addition, the dust is not collected and disposed of, but can be introduced directly into a drain, for example, via the extracted air.This prevents, for example, filter systems operating in recirculation mode from returning filtered air to the room from which it was drawn, thus ensuring that a concentration of very fine particles in the room air cannot be prevented. All particles drawn in via the air by the extraction device according to the invention pass directly into the drain line, thereby significantly reducing dust levels. To accommodate the various applications of the extraction device, the lid consists of two halves that can be folded outwards to the sides. This allows the housing to be fully opened, for example, to insert or attach the cutting board attachment or the cover plate. Additionally, the lid halves can be removed so they do not interfere with other tasks.A non-slip cover plate allows the tradesperson to stand on the housing to perform tasks that are out of normal reach. In this case, a ladder is unnecessary, as the housing's height allows work to be carried out right up to ceiling level. A cutting board attachment can also be used, featuring a frame that fits into the housing's opening and two spaced-apart support boards arranged with a gap in the middle. These raised support boards facilitate work by providing an optimal working height, for example, for cutting tiles, creating openings, or similar tasks. The resulting dust and coarse particles fall through the gap between the support boards into the housing and can be disposed of directly through the second outlet opening via a funnel.Particularly coarse particles can be collected through a provided sieve and disposed of separately. In a further specific embodiment, the housing is provided with a third opening containing a connection port, the first opening being closable by a closure element. This closure element can, for example, consist of a round ventilation grille or connection grille with louvers arranged one behind the other, which can be rotated from an open to a closed position. Thus, the air drawn in by the blower is not drawn in through the first opening, but exclusively through the connection port, to which devices required for renovation work, which also pollute the air with dust, can be connected. With the aid of the extraction device according to the invention, it is therefore possible to connect such devices and immediately extract the dust for disposal.The connection port can also be closed by, for example, a lid, plug or cover, so that in this case air can be drawn in through the first opening. As a further feature, the second opening for venting the contaminated air can be connected to a wastewater downpipe via a nozzle. This allows the extracted air, including the dust particles, to be directly discharged into the wastewater downpipe, where the dust particles enter the sewer system. Thus, the blower system does not operate in recirculation mode, but rather extracts the dust-laden air and discharges it into the wastewater downpipe. Due to the moisture present, the dust particles are immediately bound and carried away by the flowing water. The dimensions of the nozzle conform to the standard dimensions for connections to toilet or sink drain bends, allowing the nozzle to be inserted into these bends. If toilets are already present, the dust-laden air can be discharged directly into the toilet bowl opening.In a further embodiment of the invention, it is provided that the second air inlet opening for connecting the air line to a wastewater downpipe comprises a flexible hose which can be guided through the siphon pipe of a toilet to the wastewater downpipe. In a further embodiment, it is provided that a flexible, preferably length-variable drain hose can be used to connect the outlet opening to a wastewater downpipe, whereby this drain hose can be spiral-shaped. As a further embodiment of the invention, a coarse filter is arranged upstream of the blower to filter out coarse particles and protect the blower. This could, for example, be larger rock debris that cannot be transported by the blower, and a collection container can be arranged below the coarse filter to collect these particles for disposal. Depending on the existing dust load and in order to individually adjust the blower, a speed control is provided in a further design, which may reduce the speed of the blower via a step switch or an electronic control unit. The particular advantage of the present invention lies in the use of a reusable housing with a built-in fan, which can be used to extract dust-laden air, but also to prevent dust generation when cutting tiles or performing other work, thus significantly reducing air pollution. Furthermore, the housing can serve as a safe platform for tradespeople when, for example, a cover plate is inserted into the open housing cover. In this case, the housing has a circumferential support shoulder on which the cover plate rests. Alternatively, a cutting board attachment can be inserted into the housing opening, which can also be supported by the support shoulder.The cutting board attachment consists of a frame that conveniently determines the working height and, furthermore, allows for the extraction of fine dust particles via two flat support boards with a central gap. In this case, the intake grille of the first opening is closed, and the third opening of the adapter nozzle can also be closed with a cover, so that air is only drawn in through the gap. A fan creates negative pressure in the room to prevent dust particles from escaping into adjacent rooms. Moreover, it is a compact unit that can be transported to the work area by one or two workers using two carrying handles. The device thus fulfills multiple purposes and significantly reduces dust exposure for both the workers and those in neighboring rooms. The invention will be explained again below with reference to the figures. Fig. 1 shows a perspective view of an extraction device with an air inlet opening and an exhaust hose, Fig. 2 shows a perspective view of the extraction device according to Fig. 1 with a cutting board attachment, Fig. 3 shows a perspective view of the extraction device according to Fig. 1 with a closed air inlet opening and a connected cutting device, and Fig. 4 shows a top view of the open extraction device. Fig. 1 shows a perspective view of a dust extraction device 1, which consists of a housing 2 with a lid 3. The lid 3 can be either removable or hinged on the sides, so that the housing 2 is open at the top. An air inlet 5 is incorporated into the front visible end face 4 of the housing 2, which is covered by an adjustable intake grille 6. Depending on the position of the intake grille 6, the air inlet 5 can be either open, as shown in Fig. 1, or closed, as shown in Fig. 3. Next to the air inlet 5, a connection port 7 is provided in the end face 4. In Fig. 1, the intake port 7 is closed with a cover 8, and after removing the cover 8, conventional tools with a suction hose can be connected.After closing the air inlet opening 5 by the intake grille 6, the air is thus drawn in only via the intake nozzle 7 by a blower located inside the housing 2. An exhaust hose 9 is attached to the rear of the housing 2, specifically to the opposite end face, and is directly connected to the air outlet opening. The exhaust hose 9 can be inserted, for example, into an existing toilet bowl via a connecting element 10, allowing the air to flow directly into the building's drainage system. Alternatively, if, for example, a bathroom is not yet equipped with sanitary fixtures, the exhaust hose 9 with connecting element 10 can be inserted into an existing drain pipe. Fig. 1 thus shows the normal use of the extraction device 1 to remove dust from a room due to work carried out, such as chiseling for new pipes or removing existing tiles. The extraction device 1 does not operate in recirculation mode, but rather directs the extracted air from the room to the outside via the house's drainage pipes. This creates negative pressure in the room, particularly a bathroom, allowing air to enter through gaps in windows or doors, thus keeping the dust contained. With sufficient suction power from the fan located inside the housing 2, the dust-laden air is drawn in, and the necessary dust removal is carried out. Fig. 2 shows a perspective view of the extraction device 1 according to Fig. 1 with the air inlet opening 5 and the intake grille 6, as well as the intake nozzle 7 and exhaust hose 9. The cover of the housing 2 has been removed in this case. Instead, a cutting board attachment 20 has been placed on the opening of the housing 2. The cutting board attachment 20 consists of a surrounding frame 21 and two individual support boards 22, 23, which are spaced apart from each other and connected to the frame element 21. The gap 24 between the support boards 22, 23 is trough-shaped and has a connection to the interior of the housing 2, so that during work, for example tiling, the dust and larger particles generated can be extracted.Larger particles can be fed in via a ramp or funnel, with a coarse filter installed upstream of the blower to remove them for separate disposal. The cutting board attachment 20 can be used, for example, by a tiler to cut tiles, make necessary openings in the tiles, or perform other required tasks. Instead of the cutting board attachment, a non-slip cover plate could also be placed on the housing 2, allowing tradespeople to use the housing 2 of the dust extraction device 1 as a step, for example, to carry out work that is out of normal reach. The cover plate can be added to the dust extraction device 1 as a separate component. Alternatively, the lid 3 can be used as a non-slip cover plate. In a first embodiment, both the lid 3 or the support boards 22, 23 and the cutting board attachment 20 extend beyond the housing 2. Alternatively, it is possible that a stop shoulder is formed within the housing rim of the housing 2, against which the cover plate of the cutting board attachment 20 rests. Fig. 3 shows a perspective view of the extraction device 1, in which case the intake grille 6 of the air inlet opening 5 is closed and the intake nozzle 7 is connected to a suction hose 25, which in turn is connected to a device 26, which may consist of, for example, a cutting machine or the like. Fig. 4 shows a top view of the intake device 1 without a cover, revealing that the interior is divided by a partition 30. The larger area is designed to accommodate a blower 31, which extends with a nozzle 32 directly to the air outlet opening 33. The exhaust hose 9 with nozzle element 10 is pushed onto the nozzle 32. The blower 31 is powered via a mains cable 34. A control device may also be provided to continuously regulate the speed of the blower 31 via a rotary switch or an electronic control unit. The air inlet opening 5 and the intake nozzle 7 are visible in the end face 4. Behind the air inlet opening 5 and the intake nozzle 7 is a filter 35 with a suitable mesh size to retain coarse materials for separate disposal.In contrast, the air containing fine dust passes through the filter 35, is drawn in by the blower 31 and conveyed via the exhaust hose 8 into, for example, a drain pipe of the house. Reference symbol list: 1 Extraction device 2 Housing 3 Cover 4 Front surface 5 Air inlet opening 6 Intake grille 7 Connection nozzle 8 Cover 9 Exhaust hose 10 Nozzle element 20 Cutting board attachment 21 Frame 22 Support board 23 Support board 24 Gap 25 Suction hose 26 Device 30 Partition 31 Blower 32 Nozzle 33 Air outlet opening 34 Power cord 35 Filter

Claims

Extraction device (1) for the disposal of dust-laden air, in particular during renovation work, for example bathroom renovations, comprising a housing (2) and a blower (31) for the extraction of the dust-laden air, wherein the housing (2) has at least a first opening as an air inlet opening (5) and a second opening as an air outlet opening (33) and has a hinged or removable lid (3), wherein the lid (3) consists of two lid halves which are arranged to be hinged laterally outwards in order to open a top of the housing (2), characterized in that a housing opening can be closed by a cutting board attachment (20), wherein the cutting board has a frame (21) which can be inserted into the housing opening (2) or placed on the housing (2) and has two spaced-apart support boards (22, 23) which are arranged such that a gap is present in the middle. Extraction device (1) according to claim 1, characterized in that the housing opening can be closed by a slip-resistant cover plate. Extraction device (1) according to one of claims 1 to 2, characterized in that the lid halves are removable. Extraction device (1) according to one of claims 1 to 3, characterized in that the housing (2) has a third opening with a connecting nozzle (7), wherein the first opening can be closed by a closing element. Extraction device (1) according to one of the preceding claims, characterized in that the connection nozzle (7) is provided for connecting devices (26) which are intended for renovation work and pollute the air with dust, and / or that the connection nozzle (7) can be closed with a cover (8). Extraction device (1) according to one of the preceding claims, characterized in that the housing (2) has a closable intake grille (6) in front of the first air inlet opening (5), and / or that the second opening for the discharge of the polluted air can be connected to a wastewater downpipe via a nozzle element (10). Suction device (1) according to one of the preceding claims, characterized in that the dimension of the nozzle element (10) is adapted to the dimensions customary in the country for connections for WC or washbasin drain bends to wastewater downpipes. Extraction device (1) according to one of the preceding claims, characterized in that the second air outlet opening (33) for connecting the air line to a wastewater downpipe comprises a flexible hose which can be routed through the siphon line of a toilet to the wastewater downpipe, and / or that a flexible, preferably length-variable, exhaust air hose (9) is provided for connecting the air outlet opening (33) to a wastewater downpipe. Extraction device (1) according to one of the preceding claims, characterized in that the exhaust hose (9) is spirally shaped, and / or that a coarse filter (35) is arranged in front of the blower (31) for filtering coarse particles and protecting the blower (31), and / or that the speed control of the blower (31) is carried out via a step switch or an electronic control unit.

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