MOBILE DEVICE FOR COLLECTING AND COMPACTING WASTE

Description

[0001] The present invention relates to a mobile device for collecting and compacting waste, in particular a waste container. The present invention also relates to a method for collecting and compacting waste. Background and state of the art

[0002] Devices for collecting and compacting waste are known in the prior art. For example, EP 0 209 639 A1 discloses a device for compacting kitchen waste. In this device, the waste is exposed to atmospheric pressure by a pump to remove the air, thereby compacting it.

[0003] EP 1498 364 A1 discloses a device for collecting and disposing of dry waste, wet waste, and the like. The device comprises a container with a lid secured by hermetic sealing elements, containing a sliding piston that forms a hermetic chamber. It also includes waste compaction and liquid discharge elements, as well as air and liquid intake elements connected to the chamber and the interior of a flexible container. However, the piston is merely retracted by a spring; no active compression of the waste takes place.

[0004] WO 2007 / 076964 A1 discloses a waste container with a bag inside and a vacuum pump for extracting gas, in particular air, from the bag. A pressing device is provided with which a material inside the bag can be pressed and thus compressed before the gas is extracted. Details of the pressing device are not disclosed; only a downward-moving pressing plate is mentioned. The document also discloses a welding device for gas-tight sealing of the bag.

[0005] In waste containers known in the prior art, essentially only atmospheric pressure is used to compress the waste bag, or an unspecified pressure plate is moved "downwards". However, with the typically large volume of waste, including garbage, refuse, containers, etc., and low compression, both space and material are wasted unnecessarily for the collection, storage, and disposal of the waste, typically in waste bags. Disclosure of the invention

[0006] The object of the present invention is to overcome the aforementioned disadvantages of the prior art and in particular to provide a mobile waste container in which waste can be collected and stored, compacted to the greatest extent possible and then disposed of cleanly, and which is also easy to operate.

[0007] This problem is solved according to the present invention with a mobile device (1) for collecting and compacting waste comprising a) a container (2) for receiving a waste bag comprising side walls (3), a base plate (4) and a first seal (5) at the opening (6), b) a lid device (7) with a second seal (8), wherein the lid device is configured and arranged such that it can be brought into an open position relative to the opening (6) of the container (2) so that the opening (6) of the container (2) is accessible for the insertion of a waste bag, and can be brought into a closed position relative to the opening (6) of the container (2) so that the lid device (7) interacts positively with the opening of the container (2) in such a way that a waste bag inserted into the container (2) can be hermetically sealed between the first seal (5) and the second seal (8) against the lid device (7), c) means (9) for generating compressed air, d) means (10) for generating a vacuum,e) Means (11) for thermally welding a waste bag placed in the container (2) when the lid device is in the closed position, wherein the means are located at the opening (6) of the container and / or at the lid device (7), and f) Means (31) for (horizontally) displacing the mobile device (1), wherein in the device g) the lid device (7) has a suction opening (12) arranged on the lid device (7) such that, in the closed position, the gaseous atmosphere can be partially extracted from the interior of a waste bag placed in the container (2) by means of the means (10) to generate a vacuum, h) the container (2) is airtight when the opening (6) is closed, i) the base plate (4) of the container is displaceable relative to the side walls (3), and in the closed position towards the lid device (7),j) Means (14) for moving the base plate (4) relative to the side walls (3) are provided, and k) the container (2) has an inlet opening (15) for compressed air which can be supplied with compressed air by means of an inlet valve (16) provided by the means (9) for generating compressed air.

[0008] The task is also solved by a comprehensive waste collection and compaction process. a) the step of extracting a portion of the gaseous atmosphere from a waste bag containing waste, while b) simultaneously mechanically compressing the waste bag and c) simultaneously applying external air pressure to the waste bag.

[0009] This method is carried out according to the invention by a mobile device according to the present invention.

[0010] Advantageous embodiments of the device and the method are the subject of the dependent claims.

[0011] The invention is based on the understanding that it is particularly advantageous to collect and compact waste if the compaction is achieved not merely by extracting the air from the waste bag, but especially by additional simultaneous mechanical compression of the waste bag and the application of compressed air. This results in waste with a particularly small footprint and thus the best possible resource utilization.

[0012] The invention will now be described in further detail with reference to preferred embodiments.

[0013] The mobile device according to the invention for collecting and compacting waste comprises a container for receiving a waste bag. Typical containers are known in the prior art and are typically essentially cuboid or cylindrical. The container includes an opening, typically the (preferably complete) top, as well as side walls, typically the four side walls of the cuboid or the cylindrical surface of the cylinder, and a container base. According to the invention, the container is airtight when the opening is closed. That is, the side walls and the container base or the sliding base plate inside the container form an airtight sealed space if the opening were airtight. Suitable materials are plastics or metals, in particular glass fiber reinforced plastics, e.g., GRP 30 or GRP 40, PEEK plastics, PA6, as well as stainless steel or aluminum.

[0014] The container of the device according to the invention also has a first seal at the opening, typically on a surface of the top of the container perpendicular to the side walls (and parallel to the container bottom). The seal is continuous around the opening, meaning it encloses the entire opening of the container. This seal is suitable for creating an airtight seal of the opening with a typical waste bag, provided it interacts appropriately with the second seal on the lid. Suitable sealing materials are known in the prior art.

[0015] Insofar as seals are used in the present invention, suitable sealing materials are generally known to those skilled in the art. Typical materials include silicone, silicone foam, EPDM, NBR, CR, cellular rubber, sponge rubber, fluoroelastomers (e.g., Viton®), fiber seals based on aramid fibers (e.g., KLINGERSIL®), PTFE (Teflon®), polyurethane (Vulkollan®), PVC, and PMMA. Preferred materials are EPDM and silicone for the first, second, and fourth seals. Fluoroelastomers (e.g., Viton®) are preferably used as seals against the welding and cutting electrodes.

[0016] In a preferred embodiment, the device includes means for fixing a waste bag to the opening of the container, preferably a tensioning frame or clamps. Such a tensioning frame is attached to the container, for example, by means of a hinge and encloses the entire opening of the container. Thus, when the frame is folded away, the opening is freely accessible, allowing a waste bag to be inserted into the container, with the waste bag coming into contact with the first seal at the opening. The tensioning frame or clamps are then closed, thereby fixing the waste bag to the container. In one embodiment, the first seal, with the overlying waste bag, is not or only partially covered by the means for fixing the waste bag, remaining essentially accessible, particularly for interaction with the second seal of the lid device.In an alternative embodiment, the first seal is contacted by the waste bag retainer via the waste bag, if one is inserted, and, in the closed position, lies completely between the first seal at the container opening and the second seal of the lid device. The use of a tensioning frame has the advantage that the waste bag can be neatly positioned over the first seal at the container opening during insertion and secured to the container by the waste bag retainer, preferably the tensioning frame or clamps. This results in a high degree of tightness when the second seal on the lid device, in the closed position, comes into contact with the waste bag and, if applicable, with the waste bag retainer.

[0017] The container of the device according to the invention has an internally movable base plate, which is typically essentially planar. According to the invention, the base plate is designed as a type of piston that is movably arranged within the container, i.e., slidably perpendicular to the surface of the base plate, along the side walls. In one embodiment, the base plate of the container is hermetically sealed against the side walls by means of a third seal. In this embodiment, when the opening is closed, the side walls and the base plate form the airtight interior of the container. In this embodiment, the base plate preferably has means that allow the compressed air to be directed towards the top of the base plate.In a preferred alternative embodiment, the container's base plate is not airtightly sealed against the side walls by means of the third seal; rather, when the opening is closed, the side walls and the container base form the airtight container. This latter embodiment has the advantage that the third seal does not need to be airtight against compressed air once it is introduced into the container, which would place higher demands on the material used. Furthermore, an inlet opening below the base plate is sufficient for supplying compressed air to the container's interior.

[0018] The base plate is generally movable relative to the side walls and, in the closed position of the lid device, in the direction of the lid device (perpendicular to the surface of the base plate). For this purpose, corresponding guide grooves or strips are preferably provided in the side walls. By moving the base plate, the volume of the container, defined by the space into which the waste bag can be inserted, can be reduced. During this movement, the third seal (also referred to as the "seal on the base plate") seals the base plate against the side walls in every position, creating an airtight seal in one of the embodiments described above, typically at least to prevent contaminants from getting under the base plate.With the container's opening closed, it is thus hermetically sealed by the side walls (which are also airtight) and either by the base plate, or at least by the container floor.

[0019] A container is considered airtight if, with the opening closed, it maintains an applied negative pressure of 500 mbar (absolute pressure inside) below 800 mbar (absolute pressure inside) for at least 30 minutes.

[0020] According to the invention, the container has an inlet opening for compressed air, which can be supplied with compressed air provided by the means for generating compressed air via an inlet valve. Compressed air can thus be introduced into the airtight interior of the container through the inlet opening. When a waste bag is placed over the container opening and interacts with the first seal, either via the means for fixing a waste bag or via the second seal of the lid device in the closed position, the space between the waste bag and the container is sealed airtight. Introducing compressed air into the space between the waste bag and the container, with the lid device in the closed position, therefore compresses and compacts the contents of the waste bag.Preferably, according to the invention, the device is configured such that the compressed air, when used for the means of moving the base plate, can also be controlled by means of an inlet valve and directed to the inlet opening, and thus into the interior of the container.

[0021] To fix and move the base plate, the device according to the invention has means for moving the base plate relative to the side walls. These means for moving the base plate are typically suitable, on the one hand, for holding the base plate in the position of the maximum extension of the container's volume; in any case, they are suitable for moving the base plate perpendicular to its surface and, in the closed position of the lid device, towards the lid device or towards the container opening, such that the volume of the container (interior) can be reduced. The means for moving the base plate is capable of moving the base plate towards the container opening preferably with a compressive force of about 50 kPa to about 1000 kPa, more preferably about 100 kPa to about 800 kPa, and particularly from about 300 kPa to about 600 kPa.With this force, the waste bag and its contents placed in the container can be mechanically compressed when the lid is closed. The possible displacement of the base plate is preferably such that the volume of the container, defined by the space into which the waste bag can be inserted, can be reduced by 50% (i.e., to 50% of its maximum volume) or, preferably, by 70% (i.e., to 30% of its maximum volume) when the lid (and optionally the locking mechanism) is closed. Suitable means for displacing the base plate include, for example, screw drives, hydraulic cylinders (using air, water, or oil as the medium), preferably pneumatic cylinders, or bellows.The latter pneumatic cylinders or bellows can advantageously be driven by the compressed air that can be supplied by the means for generating compressed air contained in the device according to the invention. Preferably, the means for moving the base plate comprise return elements, for example, coil springs. The return elements cause or assist the retraction (away from the lid device) of the base plate after the waste bag has been mechanically compacted. The return forces are typically lower than the compressive forces, preferably from about 50 kPa to about 500 kPa, more preferably from about 100 kPa to about 300 kPa. The means for moving the base plate is configured such that it can supply both the compressive force mentioned above and the return force, i.e., the sum of the two.

[0022] The device according to the invention further comprises a lid device. This lid device is configured to cover or close the opening of the container and, for this purpose, has a second seal on the side that interacts with the opening of the container. The lid device is configured and arranged in the device such that it can be moved into an open position relative to the opening of the container, allowing access to the opening for the insertion of a waste bag, and can be moved into a closed position relative to the opening of the container, so that the lid device interacts with the opening of the container in such a way that a waste bag inserted into the container can be hermetically sealed against the lid between the first seal (at the container opening) and the second seal (on the lid device).The second seal essentially corresponds in its extent to that of the first seal, that is, essentially to that of the container opening. Therefore, when a waste bag is placed in the container and pulled over the opening and thus over the first seal, the waste bag is clamped and sealed between the first and second seals, and, if applicable, the means for securing the waste bag, when the lid is closed. This closes the waste bag with the lid mechanism, and the inside of the bag is then only in contact with the lid mechanism (and the bag itself).

[0023] According to the invention, two embodiments are preferred. In the first, the lid device comprises at least one deposit flap and a deposit funnel, the latter being arranged between the container and the deposit flap. This device preferably includes a closing mechanism that can close the container at the level of its opening. The first embodiment is, for example, Figure 1 , 2 , 3 , 17 , 27 and 18 illustrated. In the second embodiment, the lid device does not include a hopper; rather, the flap more or less directly forms the lid for the container. The second embodiment is illustrated, for example, in Figure 12 , 13 , 14 , 16 and 24 to 26 illustrated. These embodiments are described in more detail below.

[0024] In the first embodiment, the lid device comprises at least one inlet funnel, which optionally carries the second seal at its tapered (lower, container-opening) end, and an inlet flap that closes the inlet funnel at its wider (upper) end, preferably airtight. In this embodiment, the inlet funnel is preferably made of the same material as the container. The inlet flap closes the wider, typically upward-facing opening of the inlet funnel. The inlet flap is typically configured so that it can be opened, preferably by user interaction with the device, e.g., by pressing a button, a foot pedal, or touching a control panel (touchscreen). When the inlet flap is open, access to the interior of the inlet funnel and the container opening is typically granted.With a waste bag inserted, the container can then be filled. The flap can then be closed. In this position, the flap seals the wider, upward-facing opening of the hopper, preferably in a light-tight manner. For this purpose, a (fourth) seal is located on the flap or on the corresponding opposite side, i.e., on the wide opening of the hopper. This seal extends across the wider, upward-facing opening of the hopper to ensure an airtight seal by the flap. Preferably, the lid has a lock that interacts with the flap and is capable of holding the flap releasably closed. This ensures a secure and airtight closure of the container by the flap.

[0025] In a preferred embodiment, the flap forms part of the upper end of the device according to the invention. In this embodiment, the device according to the invention is thus a waste bin that can be filled from the top.

[0026] In a preferred embodiment, the lid device has a hopper and, within the hopper, a closure device, preferably closure flaps. The closure device, preferably the closure flaps, is configured to essentially close the opening of the hopper at its tapered (lower, container-facing) end when the hopper flap is closed. If a waste bag is placed in the container, the latter optionally covered as described below, and the waste is mechanically compacted, it would be forced into the hopper. The closure device prevents this. It is thus closed before mechanical compaction; optionally, the closure device is always closed as soon as the hopper flap is closed.To mechanically reinforce the closure device, preferably the closure flaps, against the mechanical pressure (with which the waste is compressed in the container), locking mechanisms for the closure device, preferably the closure flaps, can be provided. These locking mechanisms can prevent the closure device from being forced open by the mechanical pressure.

[0027] In the second embodiment, the device according to the invention does not have a hopper; rather, the flap forms the immediate lid of the container, which also carries the second seal. The latter thus directly closes the opening of the container. In this embodiment, the flap preferably does not form part of the upper end of the device according to the invention. Instead, in this embodiment, the container is preferably extendable from the device and then accessible for the disposal of waste. In this embodiment, the device according to the invention is thus a waste bin that can be filled by extending the container, e.g., as a mobile waste bin that can be pushed under a table, and whose container extends from the housing for filling.

[0028] According to the invention, the lid device has a suction opening arranged on / in the lid device such that, in the closed position, the gaseous atmosphere from inside a waste bag inserted into the container can be at least partially extracted by means of the vacuum generation system. As described above, the lid device is configured such that, in the closed position, the waste bag is clamped and sealed between the first and second seals, and optionally the means for securing the waste bag. The waste bag is thus closed by the lid device, and the interior of the bag is only in contact with the lid device (and the bag itself). This allows the gaseous atmosphere (of the bag) to be drawn out of the waste bag through the suction opening on the lid device.The necessary vacuum is provided by the vacuum generation means, as defined below. Preferably, a liquid sensor is provided on the lid device next to or within the suction opening. This sensor allows the suction process to be stopped to protect the device's components from contamination if liquids from the waste bag reach the lid device or are being suctioned out.

[0029] In the alternative embodiment, in which the device according to the invention does not have a hopper, and instead the hopper flap forms the lid which also carries the second seal, the suction opening can be arranged on the hopper flap.

[0030] The device according to the invention further comprises means for generating compressed air. Suitable means, e.g., pumps or compressors, are known in the prior art. Preferably, the generated compressed air has a gauge pressure of at least 1.0 * 10⁵ Pa (100 kPa, 1 bar), preferably at least 2.0 * 10⁵ Pa (200 kPa, 2 bar). The compressed air can be used to introduce it into the container interior via the inlet opening, as well as for the means of moving the base plate, provided that these means are air-operated, for example, pneumatic cylinders or bellows.

[0031] The device according to the invention further comprises means for generating a vacuum. Suitable means, e.g., vacuum pumps, are known in the prior art. Preferably, the vacuum that can be generated is at least 5.0 * 10⁴ Pa (50 kPa, 500 mbar) absolute pressure, more preferably at least 2.0 * 10⁴ Pa (20 kPa, 200 mbar) absolute pressure. The vacuum pump must therefore be capable of generating an absolute pressure of 500 mbar, preferably 200 mbar, in the interior of the container, and thus in the waste bag. The vacuum is used to extract the gaseous atmosphere from the waste bag. Preferably, the device comprises suitable means, e.g., a vacuum hose, to conduct the vacuum to the lid device, and in particular to the suction opening on the lid device (especially on the flap, e.g., if this is directly arranged as a lid).Preferably, the means for generating a vacuum comprise a filter, preferably a carbon filter, and / or a liquid sensor. The latter enables the suction process to be stopped to protect the components of the device from contamination if liquids are being extracted from the waste bag.

[0032] In one embodiment, the means for generating compressed air and the means for generating a vacuum are separate components, for example, a compressor and a separate vacuum pump. In a preferred embodiment, the means for generating compressed air and the means for generating a vacuum are implemented in a single means for generating compressed air and vacuum, i.e., combined in one component of the device according to the invention. For example, the exhaust air from a vacuum pump can be used directly as compressed air according to the invention. Therefore, the means for generating compressed air and vacuum is preferably a combined vacuum / compressed air pump. Suitable vacuum pumps in which the exhaust air can also be used directly as compressed air are known in the art, e.g., diaphragm pumps.

[0033] The device according to the invention further comprises means for thermally welding a waste bag inserted into the container. These means can be located at the opening of the container and / or on the lid. Suitable means for thermally welding plastic bags, such as waste bags made of PE (polyethylene), PP (polypropylene), or PLA (polylactic acid), are known in the prior art. Thermal welding is understood to be a process in which plastic films are first heated and then pressed together under pressure so that they are permanently joined. Typical means for thermal welding are heating electrodes, in particular strip electrodes, as are known in the prior art and commercially available. Typically, a half-round strip or wire is used. Depending on the process, corresponding welding temperatures, for example in the range of 80°C to 140°C, are used.80°C for thermoplastic materials such as PP and PE, and up to 140°C for PLA films. Suitable welding times are from approximately 0.1 to 5 seconds, preferably from approximately 0.5 to 3 seconds. Preferably, the welding duration is temperature-controlled, with temperature control being determined, as is known in the art, via the electrical resistance of the welding strip or wire. This ensures a duration sufficient for a complete, tight weld. Suitable parameters, such as the dimensions of the welding strip or wire and the power supply, for the thermal welding of plastic films are known in the art. Preferably, the welding strip or wire is coated with a PTFE layer to prevent the plastic film from sticking to it.The means located at the container opening and / or on the lid device are arranged such that, when the lid device is in the closed position, a waste bag stretched over the container opening can be sealed and welded to a corresponding part of the bag, for example, a folded-over flap of the bag, or to a separate part if the flap or separate part is placed over the opening. Preferably, the thermal welding means, in particular the strip electrodes, are arranged substantially parallel to the first and second seals, either on the lid device and / or on the container opening. The thermal welding means are preferably arranged completely around the container opening to ensure a complete seal of the waste bag.This can be achieved by means of thermal welding, in particular strip electrodes, which are arranged on the lid device essentially parallel to the second seal, or on the container opening essentially parallel to the first seal, in each case completely circumferentially (around the container opening). If the means of thermal welding, in particular the strip electrodes, are arranged both partially on the lid device essentially parallel to the second seal and partially on the container opening essentially parallel to the first seal, it is sufficient and preferred that the means together are arranged essentially completely circumferentially around the container opening, thus ensuring a full circumferential coverage.A full seal is ensured if there is at least a small overlap of the opposing elements, meaning that the overlap at the lid device is essentially parallel to the second seal, and the overlap at the container opening is essentially parallel to the first seal. This ensures complete closure of the waste bag. Regarding the first and second seals, the thermal welding means, in particular the strip electrodes, are preferably arranged within the respective area enclosed by the seals.

[0034] The mobile device of the present invention is typically designed as a freestanding unit, that is, it is provided with side panels and optionally a preferably hinged cover, including the deposit flap. In one embodiment, the cover and / or the deposit flap pivots open or to the side when a trigger, for example a foot pedal or push button, is actuated. Typically, at least the side panels, and optionally also the rear of the device, are provided with parts of an outer covering, particularly on the sides and rear, to prevent access to the moving components and the technology and to protect the latter.

[0035] The device of the invention is designed as a mobile device, i.e., it includes means for moving the device, and thus no rigid base or feet. Instead, means for moving the device, preferably wheels, rollers, ball bearings, or cylinders, are provided, which enable the device to be moved substantially horizontally over substantially flat surfaces. Suitable means for moving the device are known in the art and are commercially available. Optionally, the means for moving the device can be deactivated, preferably retractable and / or foldable. As a mobile unit, the device can be equipped with a mobile power supply, for example, batteries or, most preferably, rechargeable batteries. This allows for maximum mobility of the device while maintaining its functionality.

[0036] The device according to the invention can therefore be advantageously used as a freestanding waste container that can optionally be moved to different locations, in particular in the home, leisure or office.

[0037] In one embodiment, the device according to the invention includes means for separating the portion of a film that covers the opening of the container and thus the inserted waste bag. Such means, for example, a cutting or tearing edge, preferably a cutting electrode, are known in the prior art. The latter is essentially the same electrode as those used for welding as described above; only the welding time and / or temperature is increased so that the film material is separated. Typical temperatures are approximately 140°C to approximately 150°C for a period of approximately 1.5 to 3 seconds.

[0038] The device according to the invention is generally suitable for use with various waste bags. Preferably, thermally weldable plastic bags, such as waste bags, made of polyolefins like PE (polyethylene) and PP (polypropylene), and of polyesters like PLA (polylactic acid) are used for the device and the method according to the invention. Weldable plastic bags, in particular weldable biopolymer / bioplastic bags made of biodegradable PLA film, as known in the art and commercially available (for example, "Planova PLA 50" from SÜDPACK Verpackungen GmbH & Co. KG, Ochsenhausen, Germany), or 100% biodegradable biopolymer / bioplastic bags based on renewable raw materials (for example, Deiss Bioline made from ecovio®, EMIL Deiss KG (GmbH + Co.), Hamburg, Germany) are used.Preferably, the raw materials of the waste bag films are compostable according to EN 13432 and / or according to DIN CERTCO / DIN CERTCO Plus.

[0039] In a preferred embodiment, the device according to the invention further comprises means for perforating a waste bag on the lid device, in particular at the lower end of the hopper or on the flap, provided that the latter serves directly as a lid for the container. These means are typically arranged within the area enclosed by the second seal, in particular on the part of the hopper / flap facing the container, so that perforation is enabled within the area enclosed by the second seal. The means are also typically arranged outside the area enclosed by the means for thermal welding.Once a waste bag stretched over the container opening is sealed with a corresponding part of the bag, for example, a folded-over flap, or a separate part when the flap or separate part is placed over the opening, according to the invention, mechanical pressure is applied and / or compressed air is forced into the container and / or the gaseous atmosphere is extracted from inside the bag to compress the waste bag. However, since the waste bag is already sealed by pressing down a corresponding part of the bag, for example, a folded-over flap, or a separate part by placing the flap or separate part over the container opening, and pressed into the closed position by means of the lid and the second seal, air can no longer escape from inside the bag.For this purpose, a defined "outlet opening" is created on the waste bag, preferably on the cover (i.e., for example, a folded-over flap of the bag) or on the separate part, by means of a waste bag perforation device. Suitable means for perforating a waste bag include, for example, one or more spikes or cutting edges. Preferably, the waste bag perforation devices are controllable, i.e., not permanently active, and preferably electrically activated. For example, they are one or more electrically extendable spikes or one or more electrically extendable blades that subsequently retract. This can be activated before a compaction or suction step. Subsequent retraction of the device has the advantage of reducing the risk of injury when changing the waste bag.In a preferred embodiment, the means for perforating a waste bag is arranged in or near the suction opening, or perforates through the suction opening.

[0040] In a preferred embodiment, the device according to the invention includes means for fixing the cover of the waste bag. Before vacuuming or sealing the waste bag, a corresponding part of the bag, for example, a folded-over flap of the bag, or a separate part, is placed over the container opening. To prevent this part, referred to here as the cover, from slipping, the device according to the invention includes means for fixing the cover of the waste bag, typically one or more clamps or tensioning strips. These are preferably positioned on the front of the container, e.g., below the container opening. Preferably, the means for fixing the cover of the waste bag, typically one or more clamps or tensioning strips, interacts with prongs for fixing the cover of the waste bag. The latter are, for example, also positioned on the front of the container below the container opening.Safety switches are preferably located, for example, on the front of the container, perhaps below the container opening, and positioned so that they interact with the waste bag cover, e.g., are triggered by contact with it. These safety switches thus allow verification that the waste bag cover has been correctly positioned. Only in the latter case should a sealing or cutting step be performed.

[0041] In a preferred embodiment, the device according to the invention further comprises means for irradiating the interior of the container with UV light (380 to 100 nm), in particular UV-C light (280 to 100 nm), on the lid device, preferably on the loading flap. Irradiation of waste with UV light, in particular UV-C light, reduces and inactivates harmful microorganisms, thereby reducing putrefaction and other metabolic processes, and thus minimizing odor formation. Suitable light sources for generating UV light, in particular UV-C light, are known in the art, for example, UV LEDs. Preferably, the lid device, preferably on the loading flap, also includes a protective device for the means for irradiating the interior of the container, particularly when not in use. Suitable protective devices would be, for example, a rotatably or pivotably mounted glare shield or cover for the UV lamp.In certain embodiments, the flap serves as a counter-pressure surface during the mechanical compaction of the waste bag. Preferably, the protective device is configured such that it extends in front of the means for irradiating the interior of the container, for example, by unfolding or remaining unfolded, and folds back during irradiation, preferably only during irradiation, thus clearing the path of the radiation to the interior of the container. The closure device, which directly covers the container opening, may be open in this case. Preferably, the unfolded protective device forms essentially a plane with the side surface of the lid facing the container, i.e., preferably with the underside of the flap. The protective device prevents both contamination and damage to the means for irradiation, particularly during compaction or when the flap is open.

[0042] The present invention further relates to a method for collecting and compacting waste, comprising a) the step of extracting a portion of the gaseous atmosphere from a waste bag containing waste, b) simultaneously mechanically compressing the waste bag, and c) simultaneously applying external compressed air to the waste bag. According to the invention, three means are thus employed to reduce the waste volume: first, extraction of the gaseous atmosphere from the waste bag; second, mechanical compression, which serves to assist in the removal of the gaseous atmosphere and, in particular, enables higher pressures on the waste, since only the pressure of the air column of 1 bar (10⁵ Pa) is effective during extraction; and finally, third, the application of compressed air to the exterior of the waste bag. The latter thus enables compression from "all directions."According to the induction procedure, these measures a), b) and c) will be carried out simultaneously at least at one point in the proceedings.

[0043] The pressures used in process steps a), b), and c) preferably correspond to those provided for the device described above. Thus, in step a), a vacuum of at least 5.0 * 10⁴ Pa (50 kPa, 500 mbar) absolute pressure, preferably at least 2.0 * 10⁴ Pa (20 kPa, 200 mbar) absolute pressure, is preferably generated. In step b), the waste bag is preferably subjected to a pressure force of about 50 kPa to about 1000 kPa, more preferably about 100 kPa to about 800 kPa, and particularly about 300 kPa to about 600 kPa. In step c), the waste bag is preferably pressurized with compressed air at a pressure of at least 1.0 * 10⁵ Pa (100 kPa, 1 bar), preferably at least 2.0 * 10⁵ Pa (200 kPa, 2 bar). The device according to the invention is preferably configured to allow these pressures for steps a), b), and c), in particular simultaneously.

[0044] Preferably, in the inventive method, prior to steps a), b), and c) of simultaneous suction, mechanical compression, and pressurization with compressed air—that is, prior to the step of suctioning a portion of the gaseous atmosphere from a waste bag containing waste while simultaneously mechanically compressing the waste bag and externally pressurizing the waste bag with compressed air—a first step is performed in which only the waste bag is mechanically compressed, preferably followed by additional suction of a first portion of the gaseous atmosphere from the waste bag, i.e., without pressurization with compressed air. According to the invention, preferably, the waste bag is first mechanically compressed, then suction is preferably performed, before, most preferably, the waste bag is also pressurized with compressed air.

[0045] Preferably, in the inventive method, prior to the step of extracting a portion of the gaseous atmosphere from a waste bag containing waste, the waste bag is closed and sealed by pressing on a "part of the waste bag or a separate part of the waste bag" (sometimes also referred to simply as "part") while simultaneously being mechanically compressed and externally pressurized with air. Since no more air can escape from the waste bag, the cover is perforated at one point, as described above. The gaseous atmosphere can now escape through the perforation opening, and optionally, a portion of the gaseous atmosphere can be extracted from the waste bag.

[0046] Following the reduction of the waste volume according to the invention by compression and suction, a step typically follows in which the waste bag is closed by thermal welding to the cover, preferably during or (immediately) after suctioning a part of the gaseous atmosphere from the waste bag.

[0047] According to the invention, as described in detail above, the device according to the invention is advantageously used for the method according to the invention; therefore, the method according to the invention is carried out using the device according to the invention as described above. In particular, the movable base plate enables mechanical compression of the waste bag, being displaceable relative to the side walls towards the lid, which is in the closed position, and thus the volume of the container can be reduced. Subsequently, preferably while maintaining the mechanical compression pressure from the base plate, a portion of the gaseous atmosphere is extracted from a waste bag containing waste by means of the lid device.Finally, compressed air, supplied by the compressed air generator, is forced through the container's inlet opening, controlled by an inlet valve. This is preferably done while maintaining pressure from the base plate and / or while maintaining suction, thus further compressing the waste bag. This achieves maximum waste compression. The waste can then be sealed in the waste bag and disposed of.

[0048] The invention will now be described with reference to the drawings. Figure 1 shows a schematic view of a device according to the invention. Figure 2 shows a schematic view of a device according to the invention with a partially opened lid device. Figure 3 shows a schematic view of a device according to the invention with extended containers. Figure 4shows a schematic view of two containers of a device according to the invention. Figure 5 shows a schematic view of two containers of a device according to the invention with open clamping frames. Figure 6 shows a schematic view of the rear side of two containers of a device according to the invention. Figure 7 shows a detailed view of two containers of a device according to the invention. Figure 8 shows a schematic view of two containers of a device according to the invention without a side wall of the container. Figure 9 shows a schematic view of two containers of a device according to the invention without a side wall of the container and without a base plate. Figure 10 shows a schematic view of two containers of a device according to the invention without a side wall of the container with extended means for moving the base plate. Figure 11shows a schematic view of two containers of a device according to the invention without a side wall of the container with extended means for moving the base plate without a base plate. Figure 12 shows a schematic view of two covers of a device according to the invention in the extended state. Figure 13 shows a detailed view of two lids of a device according to the invention. Figure 14 shows a detailed view of two lids of a device according to the invention from the rear. Figure 15 shows a top view of a device according to the invention. Figure 16 shows a cut AA as in Figure 15 hinted at. Figure 17 shows a cut AA as in Figure 15 indicated for an alternative embodiment. Figure 18 shows a detail view B from section AA of Figure 16 and 17 . Figure 19 shows a detailed view C from section AA of Figure 16 and 17 . Figure 20shows a detail view B from section AA of Figure 16 and 17 . Figure 21 shows a detailed view C from section AA of Figure 16 and 17 . Figure 22 shows a detailed view of two containers of a device according to the invention. Figure 23 shows a detailed view of two containers of a device according to the invention. Figure 24 shows a section through the device of the invention. Figure 23 . Figure 25 shows a detailed view from Figure 24 . Figure 26 shows a detailed view from Figure 24 . Figure 27 shows three schematic views of a device according to the invention with closed drop flap (A), open drop flap (B) and partially open lid device (C). Figure 28 shows a schematic view of a device according to the invention with the container extended. Figure 29 shows a section through a device according to the invention. Figure 30shows detail views A and B from Figure 29 .

[0049] A device (1) according to the invention is used in Figure 1 The device shown here is equipped with two flaps (33) in the lid assembly (7) for two separate containers, with a front cover, control element (implemented as a touchscreen), and base, suitable, for example, as a mobile, freestanding waste bin. The left side cover is not shown, revealing the means for moving the device (31), which are implemented here as wheels. Preferably, the device is designed such that the flaps (33) open, for example, by tapping or touching the control panel, to provide access to the containers with waste bags inside for disposal of the waste. The opening of the flaps (33) can be achieved via appropriate hinges, as shown in Figure 27 BIllustrated. The reclosing of the deposit flaps (33) can be provided manually or automatically, e.g. by tapping or touching the control panel.

[0050] Figure 2 Figure 1 shows a device (1) according to the invention with a partially open lid device (7), here also designed as a freestanding, mobile waste bin with a front cover and baseboard due to the means for moving the device (31). The possibility of opening the lid plate including the flaps (33) separately from the hoppers (32) (for example by means of suitable hinges) and thus separating the latter components provides advantageous access to the components for servicing and cleaning.

[0051] Figure 3 shows a device (1) according to the invention, as shown in Figure 1The central section, which comprises the container unit, is shown extended by means of the lateral extension rails. The upper section with the operating element, which includes the lid device, is shown in the closed position. The container unit comprises two containers (2). In the embodiment with insertion flaps (33), the central section can be extended, for example, to cover the waste bags for sealing, to remove the sealed waste bag, or to insert an empty waste bag into the container (2). In this embodiment, the waste bag is normally filled by opening the insertion flaps (33) with the central section retracted.

[0052] Figure 4Figure 1 shows a detailed view of the containers of the device (1) according to the invention. The containers are essentially formed from the side walls (3) and the container base (not visible here). Inside the containers is the sliding base plate (4). The first seal (5) is provided at the opening (6) of each container. The means for thermal welding (11) are designed as strip electrodes at the openings (6), but here only for about one-third of the circumference of the openings (6). The corresponding electrodes on the lid device are not shown here (see Figure 1). Fig. 12The thermal welding means (11) are completed to fully circumferentially surround the openings. This ensures a complete seal of the waste bag during welding. Alternatively, the strip electrodes can also be installed to fully circumferentially around the container opening. The control unit for the thermal welding means (11a) supplies the thermal welding means (11) at the opening (6) or the lid device (7). The seal on the base plate (13) (also referred to as the "third seal") seals the base plate (4) against the side walls (3) in every position of the base plate (4), in one of the embodiments described in detail above, creating an airtight seal, preferably at least to prevent contaminants from getting under the base plate (4).With the opening (6) of the container closed, it is thus sealed by the side walls (3) (which are also airtight) and either by the base plate (4), or at least by the container floor (18) (not shown here, see e.g. ). Fig. 9), hermetically sealed. Compressed air can enter the interior of the container through the inlet opening (15) via the controlled compressed air inlet valve (16). This compressed air is used to compress the waste in the waste bag located inside the container (and above the base plate) when the lid device is in the closed position and presses the waste bag against the first seal (5). If the seal (13) is airtight, the compressed air is introduced into the interior of the container above the base plate. The fixing device (17), shown here as a tension frame in the closed position, surrounds the opening (6) on the outside and, when a waste bag (not shown here) is inserted (with the tension frame open), can clamp it and thus fix it to the container. The fixing device (17) only partially covers the first seal (5), specifically at the end of the opening (6) shown at the front of the figure.In this area, the fixing means (17) serves, according to a preferred embodiment of the present invention, to form a recess for perforation (25). A waste bag inserted with the tensioning frame (17) open is stretched over the first seal (5) by means of the tensioning frame. Without the recess for perforation (25), which is preferably formed by the tensioning frame while covering the first seal (5), when the waste bag is covered for welding, the cover (part of the waste bag or a separate part) and the waste bag would lie directly on top of each other, so that the perforating means (21) could not perforate the cover, or could only do so selectively under certain circumstances.The indentation for perforation (25) thus protects the waste bag from the perforation device (21), the latter of which can only perforate the cover to allow the gaseous atmosphere to be extracted and / or escaped from the interior of the waste bag. This will be explained in more detail in [reference]. Figure 18 described.

[0053] Figure 5 shows a detailed view of the containers (2) of the device (1) according to the invention Figure 4 The means of fixing (17), here designed as a tension frame, is shown in the open position. In this state, a waste bag (not shown here) can be inserted into the interior of the container through the opening (6).

[0054] Figure 6Figure 1 shows a detailed view of the containers (2) of the device (1) according to the invention from the rear. The containers (2) comprise the side walls (3) and the container base (not visible here) and have the openings (6). The fixing means (17), designed here as a tension frame and shown in the closed state, surrounds the opening (6) on the outside and, when a waste bag (not shown here) is inserted (with the tension frame open), can clamp it and thus fix it to the container. To advantageously utilize the space in the device (1) according to the invention, the means (9) for generating compressed air, indicated here as a compressor, and the means (10) for generating a vacuum, indicated here as a vacuum pump, are arranged in the container unit of the device behind the containers. Alternatively, according to the invention, both components, i.e., the means (9) for generating compressed air, e.g.,A compressor and the means (10) for generating a vacuum, e.g., a vacuum pump, are integrated into a single component, e.g., a diaphragm pump capable of delivering both vacuum and positive pressure. The activated carbon filter (19) is mounted above the vacuum pump. The control unit for the thermal welding means (11a) is located below the compressor.

[0055] Figure 7Figure 1 shows a detailed view of the interior of a container (2) of the device (1) according to the invention. The area of ​​the container (2) in which the waste bag can extend is bounded by the side walls (3) and the sliding base plate (4), shown here in the "raised" position. The first seal (5) and the means for thermal welding (11) are provided at the opening (6) of the container. The seal on the base plate (13) seals the base plate (4) against the side walls (3), either airtight, or preferably at least to prevent contaminants from getting under the base plate (4). The fixing means (17) only partially covers the first seal (5), here at the end of the opening shown at the front of the figure. In this area, according to a preferred embodiment of the present invention, the fixing means (17) also serves to form the recess for the perforation (25).

[0056] Figure 8Figure 1 shows a detailed view of the interior of a container (2) of the device (1) according to the invention. The containers are essentially formed from the side walls (3) (the front side wall is not shown) and the container base (18). The area of ​​the container (2) in which the waste bag can extend is bounded by the side walls (3) and the sliding base plate (4), shown here in the "lowered" position. The seal on the base plate (13) seals the base plate (4) against the side walls (3), either airtight, preferably at least to prevent contaminants from getting under the base plate (4). According to the invention, the means for sliding the base plate (14) preferably comprises both thrust elements, here designed as air bellows, which can move the base plate (4) towards the lid, and return elements, here designed as coil springs.

[0057] Figure 9shows a detailed view of the interior of a container (2) of the device (1) according to the invention. Figure 8 The containers are essentially formed from the side walls (3) (front side wall not shown), and the container floor (18). The floor panel (4) is, in comparison to Fig. 8 not shown. According to the invention, the means for moving the base plate (14), shown here in the "lowered" state, preferably comprises both thrust elements, here designed as air bellows, which are connected by means of a holder and can move the base plate (4) towards the lid, and return elements, here designed as coil springs.

[0058] Figure 10 shows a detailed view of the interior of a container of the device according to the invention (1) Figure 8However, the movable base plate (4) is brought into the "raised" position by the means for moving the base plate (14). According to the invention, the means for moving the base plate (14) preferably comprises both thrust elements, here designed as air bellows, which can move the base plate (4) towards the lid, and return elements, here designed as coil springs. The latter are tensioned in the "raised" position and allow the base plate to return to its original position, for example, after the container has been emptied, i.e., after the compressed and sealed waste bag has been removed.

[0059] Figure 11 shows a detailed view of the interior of a container (2) of the device (1) according to the invention. Figure 10 . The means for moving the base plate (14) is shown in the "raised" state; the base plate is not shown.

[0060] Figure 12Figure 1 shows a detailed view of the lid device (7) of the device (1) according to the invention, shown here in the extended state by means of extension rails (e.g., for servicing purposes). In the embodiment shown (described here as the second embodiment), the loading flaps are provided directly above the container opening and serve as rigid lids of the lid device once the containers are inserted; a loading funnel is not present. The lid device (7) includes the second seal (8), which interacts with the first seal (5) at the container opening (not shown here) in the closed position. The means for thermal welding (11) are designed as strip electrodes, but only for approximately two-thirds of the circumference of the opening. The corresponding electrodes at the container opening are not shown here (see, e.g., Figure 1). Fig. 4The means for thermal welding (11) complete the circuit around the opening of the container. This ensures a complete seal of the waste bag during welding. The atmosphere can be extracted from the waste bag through the extraction openings (12).

[0061] Figure 13 shows a detailed view of the lid device (7) of the device (1) according to the invention in the embodiment accordingly Figure 12, shown here from below, looking towards the container. In the embodiment shown, the loading flaps are located directly above the container opening; a loading funnel is not present. The lid device (7) includes the second seal (8), which interacts with the first seal (5) at the container opening (not shown here) in the closed position. The thermal welding means (11) are designed as strip electrodes, but only cover approximately two-thirds of the circumference of the opening. The atmosphere can be extracted from the waste bag through the extraction opening (12). The extraction opening (12) also houses the perforation means (21). The protective device (20) can be folded away during operation, thereby providing optical access for the irradiation means, typically a UV lamp, to the interior of the container. The light from the UV lamp can thus be seen, for example, as soon as the protective device (20) is moved aside.The protective device (20), when rotated or pushed, essentially forms a plane with the side surface of the lid device (7), which is directed towards the container in the closed position.

[0062] In the illustrated embodiment, where the loading flaps are provided directly above the container opening and a loading funnel is not present, the lid device (7) of the device (1) according to the invention remains in the retracted state during normal operation of the device, as shown in Figure 1 In this embodiment, the container unit, as shown in [reference], is typically used to introduce waste into the waste bag. Fig. 3 shown, extended, and after the waste was inserted, returned to the position shown. Fig. 1The container unit is shown in the retracted position. In the retracted state, the second seal (8) is normally lowered so that it interacts with the first seal (5) at the container opening in the closed position, sealing the waste bag. This prevents unpleasant odors from the waste. Additionally, after the container unit is retracted, the waste can be irradiated with UV light by the means for irradiating the interior of the container. In one embodiment, after each retraction of the container unit, the waste is irradiated and / or a portion of the atmosphere is extracted from the waste bag.

[0063] Figure 14Figure 1 shows a detailed view of the lid device (7) of the device (1) according to the invention, shown here from above and in the embodiment in which the insertion flaps are provided directly above the container opening, and a insertion funnel is not present. The atmosphere can be extracted from the waste bag through the extraction opening (12). The housing, which normally encloses the extraction opening, the UV lamp (26), and the protective device (20), is not shown. The waste bag can be perforated through the extraction opening (12) by the means for perforation (21), indicated here as a blade, which traces a semicircular cutting area. In the lid, which is shown in the foreground, the UV lamp (26) and the protective device (20) are not visible; only the opening, which is normally filled by the protective device (20), is shown.

[0064] Figure 15shows the device (1) according to the invention in the embodiment of Figure 14 schematically from above, to show the position of cut AA as in Figure 16 to illustrate.

[0065] Figure 16 shows the AA cut Figure 15 The illustration shows the lid device (7) in the embodiment where the insertion flaps are provided directly above the container opening and a insertion funnel is not present, the UV lamp (26), the protective device (20), and the container opening. The means for perforation (21), indicated here as a blade, protrudes through the suction opening (12) and perforates the part of the waste bag, or the separate part that covers the waste bag. This is explained in more detail in [reference to relevant section]. Figures 18 and 20 explained, which section B of Figure 16The container (2) is shown with its side walls (3), tension frame (17), and opening. The waste bag is also indicated, as well as the part of the waste bag, or rather the separate part that covers the waste bag and thus spans the container opening. This will be shown in more detail in [reference]. Figures 18 to 21 explained.

[0066] Figure 17 shows a section AA accordingly Figure 16However, in the (first) embodiment, the lid device (7) comprises flaps (33) and a hopper (32) for each container. The flap (33) closes the wider, upward-facing opening of the hopper (32). When the flap (33) is open, access to the interior of the hopper (32) and the opening of the container is typically provided. With a waste bag inserted, the container can thus be filled. In the closed position, as shown, the flap (33) seals the opening of the hopper (32) in a light-tight manner by means of the (fourth) seal (36). The lid device (7) also has a lock (37) that interacts with the flap (33) and is capable of releasably holding the flap (33) in the closed position. This ensures a secure and tight closure of the container by the flap (33).

[0067] The in Figure 17The lid device (7) shown comprises a hopper (32) and, within the hopper, a closure device (34) according to a preferred embodiment. The closure device (34) is configured to essentially close the opening of the hopper at its tapered (lower, container-opening) end when the hopper flap (32) is closed, as shown. If a waste bag (23) is inserted in the container (3) and the latter is closed as described above and as shown in the Figure 17shown with a flap of the waste bag or separate part (24) covered, and if the waste is mechanically compacted, it would be forced into the hopper (32). The closing device (34) prevents this. The latter is thus closed before mechanical compaction; optionally, the closing device (34) is always closed as soon as the hopper flap (33) is closed. To secure the closing device (34), preferably formed from closing flaps (see Figure 29 To reinforce the closure device (34) against the mechanical pressure (with which the waste is compressed in the container), locking devices (35) are provided. These locking devices (35) prevent the closure device (34) from being forced open by the mechanical pressure.

[0068] In the Figure 17In the illustrated embodiment, the loading flap (33) also includes the irradiation means (26), typically a UV lamp, and the protective device (20). The latter can be folded away during operation, thereby allowing the irradiation means optical access to the interior of the container. The light from the UV lamp can thus reach the interior of the container as soon as the protective device (20) has been moved aside, e.g., rotated or slid, and the closing device (34) is opened.

[0069] In Figure 17 The path of the atmosphere as it is drawn from the waste bag is illustrated by arrows. In the embodiment shown, the atmosphere passes through the suction gap (see detail). Fig. 18 ) through the suction opening (12) and through the filling funnel (32), in which there is an opening connected to the means for generating a vacuum (in Fig. 17 removed from the bottom left of the filling funnel (32).

[0070] Figure 18 shows section B from Figure 16 and 17with more details illustrating the perforating and suction process step. Section B shows the upper edge of the container (2) with the first seal (5) at the container opening. The lid device (7) is shown in the closed position; the second seal (8) on the lid device interacts with the first seal (5), here via a part of the tensioning frame (17) including a corresponding further seal on the tensioning frame (17a). The means for thermal welding (11), here designed as strip electrodes, are arranged on the lid device. A waste bag (23) is shown inserted into the container, resting against the side wall (3) inside the container. The waste bag is stretched over the container opening by the means for fixing the waste bag (17), here designed as a tensioning frame, in particular over the first seal (5) at the container opening.In the case of cutout B, the tensioning frame (17) presses the waste bag (23) directly onto the first seal (5), since here the tensioning frame (17), including the further seal on the tensioning frame (17a), projects beyond the first seal (5). For areas where the means for fixing the waste bag (17) does not project beyond the first seal (5), as for example in . Fig. 4 shown and to Fig. 4As discussed, the means for fixing the waste bag (17) merely stretches the waste bag over the first seal (5). To close the waste bag when the intended fill level is reached, according to the invention, a part, for example a flap of the waste bag, or, preferably, a separate part of the waste bag (24), for example from a continuous roll, must be placed over the container opening. This is typically done manually with the container unit extended; however, corresponding means can also be provided that automatically position the separate part, for example a flap of the waste bag, or, preferably, a separate part (24), for example from a continuous roll, over the container opening. This can also be done for the container unit in the retracted state, as in Fig. 1As shown, provided for. After the container unit is inserted into the device (1) according to the invention, which can be provided and carried out manually or automatically, e.g. at the push of a button, as shown, the container unit is ... done manually or automatically, e.g. at the push of a button, as shown, the container unit is moved as shown. Fig. 18 As shown, the lid device is brought into the closed position. Here, the second seal (8) of the lid device is pressed onto the clamping frame (17), including a corresponding further seal (17a), and this is then pressed onto the first seal (5). For areas where the clamping frame does not extend beyond the first seal (5), such as in Fig. 4 shown and to Fig. 4As discussed, the tensioning frame simply stretches the waste bag over the first seal (5). Here, the second seal (8) of the lid device is pressed directly onto the first seal (5). In both cases, the second seal (8) of the lid device seals the part of the waste bag, for example, a flap of the waste bag, or, preferably, the separate part (24), against the waste bag (23). In this position, the interior of the waste bag is hermetically sealed from the environment. However, this also means that the atmosphere from inside the waste bag could not be extracted in this state, or that the atmosphere from inside the waste bag could not escape when the waste bag is compressed. To enable this, a defined opening is created in the cover of the waste bag by the perforation means (24).The recess for perforation (25) created by the tensioning frame (17) by covering the first seal (5) enables selective perforation of the covering part of the waste bag, for example a flap of the waste bag, or, preferably, of the separate part (24), as in . Fig. 18 shown. As in excerpt B of the Fig. 18As also shown, the fixing means (17) serves, according to a preferred embodiment of the present invention, to form a recess for perforation (25). Without the recess for perforation (25), which is preferably formed by the clamping frame under the first seal (5), when the waste bag is covered for welding, the cover (part of the waste bag or a separate part) and the waste bag would lie directly on top of each other, so that the perforating means (21) could not selectively perforate only the cover. The recess for perforation (25) thus protects the waste bag from the perforating means (21), allowing the latter to perforate only the cover. After perforation, a portion of the atmosphere can be extracted from the interior of the waste bag through the suction opening (12), as indicated by the arrow.a part of the atmosphere from the inside of the waste bag escapes during compression of the same, through the suction gap (22) which remains between the waste bag (23) and the covering part of the waste bag, for example a flap of the waste bag, or, preferably, the separate part (24).

[0071] Figure 19 shows section C from Figure 16 and 17 with more details according to the process step of perforating and suction as in Figure 18Section C shows the upper edge of the container (2) with the first seal (5) at the container opening. The lid device (7) is shown in the closed position; the second seal (8) on the lid interacts with the first seal (5). The means for thermal welding (11), here designed as strip electrodes, are arranged on the container. A waste bag (23) is inserted into the container and rests against the side wall (3) inside the container. The waste bag is stretched over the container opening, in particular over the first seal (5) at the container opening, by means of the means for fixing the waste bag (17), here designed as a tension frame. To close the waste bag, according to the invention, a part, for example a flap of the waste bag, or, preferably, a separate part of the waste bag (24), for example from a continuous roll, is placed over the container opening. As shown in Figure 19 , accordingly Figure 18As shown, the lid device is brought into the closed position. In this position, the second seal (8) of the lid device is pressed onto the first seal (5), and the second seal (8) of the lid device seals the part of the waste bag, for example a flap of the waste bag, or, preferably, the separate part (24) against the waste bag (23). In this position, the interior of the waste bag is hermetically sealed from the environment. Between the welding means (11) and the corresponding opposing surface, the suction gap (22) remains between the waste bag (23) and the covering part of the waste bag, for example a flap of the waste bag, or, preferably, the separate part (24).

[0072] Figure 20 shows section B from Figure 16 and 17 with more details for the welding process step. As in Fig. 18The lid device is also shown in the closed position, but lowered further to allow the waste bag to be welded shut. Here, the lid device is shifted further towards the upper edge of the container (2) with the first seal (5). The second seal (8) on the lid continues to interact with the first seal (5), here via a part of the tensioning frame (17) including a corresponding additional seal (17a). The thermal welding means (11) arranged on the lid device, here designed as strip electrodes, now rest directly on the corresponding counter-surface of the container opening, which is shown in Fig. 18The remaining suction gap (22) is closed. The waste bag (23) inserted into the container is thus in contact below the means for thermal welding (11) with the part, for example a flap of the waste bag, or, preferably, a separate part of the waste bag (24), for example from a continuous roll, and can be welded to it and thereby sealed.

[0073] Figure 21 shows section C from Figure 16 and 17 with more details for the welding process step. Compared to Fig. 19The lid is also in the closed position, but lowered further to allow the waste bag to be sealed. In this position, the lid assembly is shifted further towards the upper edge of the container (2) with the first seal (5). The second seal (8) on the lid assembly continues to interact with the first seal (5), here via a part of the tensioning frame (17) including a corresponding additional seal (17a). The thermal welding means (11) arranged on the container (2), here designed as strip electrodes, are now in direct contact with the corresponding mating surface of the lid assembly, which is in Fig. 19The remaining suction gap (22) is closed. The waste bag (23) inserted into the container is thus in contact above the means for thermal welding (11) with the part, for example a flap of the waste bag, or, preferably, a separate part of the waste bag (24), for example from a continuous roll, and can be welded to it and thereby sealed.

[0074] Figure 22Figure 1 shows a section corresponding to the second embodiment of the device according to the invention. The extendable central section, fixed by the lateral extension rails, comprises the container unit, here two containers, shown in the extended state with the front cover slightly folded down. In the embodiment shown, the means for thermal welding (11) are provided fully circumferentially around the opening of the container, which is preferred according to the invention. In the container shown in the foreground, the opening of the container is covered and thus closed by a separate part of the waste bag (24). The separate part of the waste bag (24) is, as in the Figure 22represented by a roll (30) (endless roll) which stores several parts of the waste bag (24) intended for covering the waste bag. The roll (30) is preferably arranged at the rear end of the container, i.e., at the end of the container furthest from the front cover. As shown in Fig. 22In the illustrated state, the roller (30) is preferably arranged such that, according to the invention, a separate part of the waste bag (24) can be unrolled from the roller (30) and placed over the container opening in order to close the waste bag. This part of the waste bag (24) can then be fixed by the means for fixing the cover of the waste bag (27), here designed as a hinged frame on the front of the container. The means for fixing the cover of the waste bag (27) preferably presses the part of the waste bag (24) onto pins for fixing the cover of the waste bag (27a). Typically, between the roller (30) and the opening of the container, there are means for cutting (29), here designed as a cutting electrode. Alternatively, the means for cutting (29) can also be designed as a tear-off edge.Preferably, safety switches (28) are arranged such that they are activated when the part of the waste bag (24) is correctly positioned on the opening of the container. This arrangement allows the part (24) that will close the waste bag to be secured by the means for fixing the waste bag cover (27) as soon as it is placed over the opening of the container, with the safety switches (28) being activated when the part (24) is correctly positioned on the opening of the container. Subsequently, the waste bag can be fully welded around the opening of the container by the means for thermal welding (11) and thus closed, and preferably after the waste bag has been welded, the part (24) can be cut from the roll (30) by the means for cutting (29).Finally, the sealed waste bag can be removed from the container after opening the means for fixing the cover (27) and the means for fixing the waste bag (17).

[0075] Figure 23 shows a section of a preferred device according to the invention. Figure 22 . In the container shown in the foreground, the opening of the container is covered and closed by a separate part of the waste bag (24). In comparison to Fig. 21 The means for fixing the cover of the waste bag (27), here designed as a hinged frame on the front of the container, is shown closed. The part of the waste bag (24) is thus fixed. In doing so, the means for fixing the cover of the waste bag (27) presses the part of the waste bag (24) preferably onto pins for fixing the cover of the waste bag (27a) and activates the safety switches (28) (not shown here).

[0076] Figure 24 shows a section through a device according to the invention in the embodiment accordingly Figure 16In the illustrated container, the opening is covered by a separate part of the waste bag (24), thus sealing the inserted waste bag (23). As shown in the figure, the separate part of the waste bag (24) comes from a roll (30) (continuous roll) which contains several parts of the waste bag (24) intended for covering the waste bag. In the method according to the invention, three means are used simultaneously to reduce the waste volume: first, extraction of the gaseous atmosphere from the waste bag; second, mechanical compression, which serves to assist in the removal of the gaseous atmosphere and, in particular, enables higher pressures on the waste; and finally, third, the application of compressed air to the outside of the waste bag. The extraction of the gaseous atmosphere from the waste bag, which creates a negative pressure inside the waste bag, is shown as "A" in the figure.The pressurization process is illustrated by the arrows marked "B". This is achieved by introducing compressed air into the container, specifically below the base plate. The compressed air flows past the seals of the base plate and acts on the waste bag, which is sealed against the lid. The force exerted by lifting the base plate mechanically compresses the waste.

[0077] Figure 25 shows a section accordingly Figure 18 with more details for the process steps of perforation and extraction as well as pressurization. Shown is the upper edge of the container, the lid is in the closed position, the second seal on the lid interacts with the first seal, here via part of the clamping frame including a corresponding further seal on the clamping frame (as in Figure 18The means for thermal welding (11), here designed as strip electrodes, are arranged at the container opening. A waste bag (23) is shown inserted into the container, resting against the side wall (and the base plate, not shown) inside the container. The waste bag is stretched over the container opening by the means for fixing it, here designed as a tensioning frame. To close the waste bag when the intended fill level is reached, a part, for example a flap of the waste bag, or, preferably, a separate part of the waste bag (24), for example from a continuous roll, is placed over the container opening according to the invention. This is typically done manually with the container unit extended; however, corresponding means can also be provided that automatically position the separate part (24), for example from a continuous roll, over the container opening.The separate part of the waste bag (24) is clamped by the means for fixing the waste bag cover (27); a correctly inserted part (24) activates the safety switches (28). With the lid in the closed position, the second seal of the lid device is positioned directly on the first seal of the container (see in more detail in ). Fig. 18The seals of the lid and the container seal the separate part (24) against the waste bag (23). In this position, the interior of the waste bag is hermetically sealed from the environment. To allow the atmosphere to be extracted from the inside of the bag, a defined opening is created in the cover of the waste bag by the perforation device. After perforation, some of the atmosphere can be extracted from the inside of the waste bag through the extraction opening in the lid, or some of the atmosphere can escape from the inside of the waste bag when it is compressed. The extraction of the gaseous atmosphere from the waste bag, which creates a vacuum inside the waste bag, is shown as "A" in the figure. The pressurization is illustrated by the arrows marked "B". The latter is achieved by introducing compressed air into the container, here below the base plate.Compressed air flows past the seals of the base plate and acts on the waste bag, which is sealed against the lid. The force exerted by lifting the base plate mechanically compresses the waste.

[0078] Figure 26 shows the Figure 25 corresponding cutout at the other end of the container, accordingly Figure 19 The upper edge of the container is shown; the lid mechanism is in the closed position, and the second seal on the lid mechanism interacts with the first seal (as in...). Fig. 19The means for thermal welding (11), here designed as strip electrodes, are arranged at the container opening. A waste bag (23) is shown inserted into the container. The waste bag is stretched over the container opening by the means for fixing it, here designed as a tensioning frame. According to the preferred embodiment shown, a separate part of the waste bag (24) is positioned by a roller (30) over the container opening and the waste bag inserted therein, typically manually with the container unit extended; however, corresponding means can also be provided to automatically position the separate part (24) over the container opening. The seals of the lid device and the container seal the separate part (24) against the waste bag (23). The extraction of the gaseous atmosphere from the waste bag, which creates a negative pressure in the waste bag, is shown in the figure as "A".The pressure application is illustrated by the arrows marked "B". After suction, the waste bag is sealed by welding to the separate part (24), and the latter is separated from the roll (30) by the means for separating the separate part (29), here designed as a cutting electrode.

[0079] Figure 27 Figure 1 shows three views of a device (1) according to the first embodiment, featuring a flap (33) in the lid (7) for a (single) container, a front cover, a control element (designed as a touchscreen), and a base, suitable, for example, as a mobile, freestanding waste bin. In view A, the flap (33) in the lid (7) is closed; in view B, the flap (33) is open, allowing the container to be filled with waste. View C shows the device with the lid (7) partially open. Fig. 2The ability to open the cover plate, including the loading flap (33), separately from the loading hopper (32), thus separating the latter components, provides advantageous access to the components for servicing and cleaning. The left side cover of the device is not shown in any of the three views, revealing the means for moving the device (31), which are implemented here as wheels. Preferably, the device is designed such that the loading flap (33) opens, for example, by tapping or touching the control panel, to provide access to the containers with waste bags inside for waste disposal. The loading flap (33) can be closed manually or automatically, again for example, by tapping or touching the control panel.

[0080] Figure 28 shows a view of the device (1) according to the invention Figure 27The central section, which includes the container unit, is shown extended by means of the lateral extension rails. To increase stability, the means for moving the device (31), here designed as wheels, are also located on the container unit, i.e., the extended central section that includes the container. The upper part with the operating element, which includes the lid device (7), is shown in the folded-down position with the flap (33) closed. In the container shown, the opening of the container is covered and thus closed by a separate part of the waste bag (24). The separate part of the waste bag (24) is, as shown in the Fig. 22As shown, a roll (continuous roll) is used to store several parts of the waste bag (24) intended to cover the waste bag. The roll is preferably arranged at the rear end of the container, i.e., at the end of the container furthest from the front cover. As shown in Fig. 22 In the illustrated state, the roller (30) is preferably arranged such that, in order to close the waste bag, a separate part of the waste bag (24) can be unrolled from the roller and placed over the container opening, according to the invention. This part of the waste bag (24) can then be secured by the means for fixing the cover of the waste bag, here designed as a hinged frame on the front of the container.

[0081] Figure 29 shows a section through a device according to the invention in the second embodiment accordingly Figure 17The device comprises two containers; in the left container, the bottom is lowered and the locking device (34) is open, while in the right container, the bottom is raised and the locking device (34) is closed. The loading flap (33) is open in the left container and closed in the right container. (See detailed views.) A and B are in Figure 30 depicted.

[0082] Figure 30 shows the detailed views A and B out of Figure 29 In the left-hand detail view A The locking device (34) is shown open with the wings folded into the hopper (32), and the locking mechanism (35) has been released. A waste bag (23) is placed in the container (2). (See detail view on the right.) BThe closing device (34) is shown closed in the hopper (32), and the locking mechanism (35) of the closing device secures the wings of the closing device (34). The closing device (34) prevents the waste from being forced out of the waste bag (23) into the hopper (32).

[0083] According to the invention, this provides a waste container in which a comparatively large quantity of waste can be collected and stored, which can be compacted to the maximum extent and then disposed of cleanly, and which is also easy to use. Reference character list

[0084] 1 Device 2 Container 3 Side walls 4 Base plate 5 First seal at the container opening 6 Container opening 7 Lid device 8 Second seal at the lid device 9 Compressed air generating device 10 Vacuum generating device 11 Thermal welding device 11a Thermal welding device control 12 Extraction opening at the lid device 13 Seal at the base plate 14 Base plate sliding device 15 Container inlet 16 Compressed air inlet valve 17 Waste bag securing device 17a Seal at the waste bag securing device 18 Container base 19 Activated carbon filter 20 UV lamp guard 21 Perforation device 22 Extraction slot 23 Waste bag 24 Waste bag flap or separate part 25 Perforation recess 26 UV lamp 27 Securing device Cover of the waste bag 27a Prongs for fixing the cover of the waste bag 28 Safety switch 29 Means for separating the30 Separate part 31 Roller of the separate part for covering the waste bag 32 Means for moving the device 32 Inlet funnel 33 Inlet flap 34 Closing device 35 Lock for closing device 36 Fourth seal, inlet flap 37 Lock, inlet flap

Claims

1. Mobile waste collection and compaction device (1), comprising a) a container (2) for receiving a waste bag, comprising an opening (6), side walls (3), a movable bottom plate (4) inside and a first seal (5) at the opening (6), b) a lid device (7) with a second seal (8), wherein the lid device is configured and arranged such that it • can be brought into an open position with respect to the opening (6) of the container (2) such that the opening (6) of the container (2) is accessible for introducing a waste bag, and • can be brought into a closed position with respect to the opening (6) of the container (2), such that the lid device (7) interacts positively with the opening of the container (2) such that a waste bag introduced into the container (2) can be sealed airtight against the lid device (7) between the first seal (5) and the second seal (8), c) means (9) for generating compressed air, d) means (10) for generating negative pressure, e) means (11) for thermally welding a waste bag introduced into the container (2) when the lid device is in the closed position, wherein the means is located at the opening (6) of the container and / or on the lid device (7), and f) means (31) for displacing the mobile device (1), wherein the lid device (7) has a suction opening (12), which is arranged on the lid device (7) such that, in the closed position, the gaseous atmosphere can be partially extracted from the interior of a waste bag introduced into the container (2) via the means (10) for generating negative pressure, the container (2), when the opening (6) is closed, is airtight, the bottom plate (4) of the container is displaceable with respect to the side walls (3), and in the closed position in the direction of the lid device (7), the device (1) has means (14) for displacing the bottom plate (4) with respect to the side walls (3), and the container (2) has an inlet opening (15) for compressed air, which can be supplied with compressed air, which is provided by the means (9) for generating compressed air, in a controlled manner by means of an inlet valve (16).

2. Device (1) according to claim 1, wherein the lid device (7) comprises a throw-in funnel (32), which optionally carries the second seal (8) at the tapered end, a throw-in flap (33), which closes the throw-in funnel (32) at the wider (upper) end, preferably in an airtight manner, and optionally means (21) for perforating a waste bag.

3. Device (1) according to claim 1 or 2, wherein the means (14) for displacing the bottom plate (4) are driven with compressed air provided by the means (9) for generating compressed air.

4. Device (1) according to any one of the preceding claims, which is configured such that the compressed air used for the means (14) for displacing the bottom plate (4) can also be guided to the inlet opening (15) in a controlled manner by means of an inlet valve (16).

5. Device (1) according to any one of the preceding claims, wherein the means (14) for displacing the bottom plate is pneumatically operated, and are preferably one or more pneumatic cylinders or one or more pneumatic bellows.

6. Device (1) according to any one of the preceding claims, wherein the means (10) for generating negative pressure, preferably a vacuum pump, are arranged in the lid device (7).

7. Device (1) according to any one of the preceding claims, wherein the means (10) for generating negative pressure comprises a filter, preferably a carbon filter, and / or a liquid sensor.

8. Device (1) according to any one of the preceding claims, wherein the lid device (7), preferably in the throw-in flap (33), has means for irradiating the interior of the container with UV light.

9. Device (1) according to any one of the preceding claims, wherein the device has means (17) for fixing a waste bag, preferably a clamping frame, to the opening (6) of the container.

10. Device (1) according to any one of the preceding claims, wherein the device has means for displacing the device, preferably tires, rollers or ball rollers.

11. Method for collecting and compacting waste, comprising the step of extracting a part of the gaseous atmosphere from a waste bag containing waste, while simultaneously mechanically compressing the waste bag and subjecting the waste bag to external air pressure, wherein a device (1) according to any one of the preceding claims 1 to 10 is used in the method.

12. Method according to claim 11, wherein prior to the step of extracting a part of the gaseous atmosphere from a waste bag containing waste, while simultaneously mechanically compressing the waste bag and subjecting the waste bag to external air pressure, a step is first performed in which only the waste bag is mechanically compressed, followed by the additional extraction of a first part of the gaseous atmosphere from a waste bag.

13. Method according to any one of claims 11 or 12, wherein, before the step of extracting a part of the gaseous atmosphere from a waste bag containing waste, while simultaneously mechanically compressing the waste bag and subjecting the waste bag to external air pressure, the waste bag is closed by means of a part of the bag or a separate part of the waste bag by pressing on the part, this part of the bag or a separate part of the waste bag is perforated, and a part of the gaseous atmosphere is extracted from the waste bag through the perforation opening.

14. Method according to any one of claims 11 to 13, further comprising a step of closing the waste bag by thermal welding during or after the extraction of a part of the gaseous atmosphere from a waste bag.