EP4177184A1 - Device for collecting and compacting waste - Google Patents

Abstract

The present invention relates to a device for collecting and compacting waste, in particular a waste container. The present invention also relates to a method for collecting and compacting waste.

Description

The present invention relates to a device for collecting and compacting waste, in particular a waste container. In particular, the present invention relates to a device having the features of the preamble of claim 1. The present invention also relates to a method for collecting and compacting refuse.

Background and prior art

Devices for collecting and compacting waste are known in the prior art. So reveals the EP 209 639 A1 a device for compacting kitchen waste. In the device, the waste brought in is exposed to the atmospheric pressure by sucking the air with a pump, whereby it is compacted.

In the EP 1498 364 A1 discloses an apparatus for collecting and disposing of dry waste, wet waste and the like. The device comprises a container with a lid fixed by hermetic closures, with an internal piston that can slide and form a hermetic chamber. There are also waste compaction and liquid discharge elements, as well as air and liquid suction elements connected to the chamber and the interior of a flexible container. However, the plunger is only pulled back by a spring; there is no active pressing of the refuse.

The WO 2007/076964 A1 discloses a waste container with a bag located therein and a vacuum pump for sucking gas, in particular air, out of the bag, wherein a pressing device is provided with which a material inside the bag is pressed before sucking off the gas and is thus compressed can. However, details of the pressing device are not disclosed, only a pressing plate moving "down" is mentioned. The document also discloses a sealing device for sealing the bag gas-tight.

In the case of the waste containers known in the prior art, essentially only atmospheric pressure is used to compress the waste bag, or a press plate, which is not defined in more detail, is moved “down”. With a typically high space requirement for waste, including rubbish, rubbish, containers or the like and low compression, both unnecessary space and unnecessary material for the collection, storage and disposal of the waste, typically waste bags, consumed.

Disclosure of Invention

The object of the present invention is to overcome the above-mentioned disadvantages of the prior art and in particular to provide a waste container in which waste can be collected and stored, compacted as much as possible and then disposed of cleanly, and which is at the same time easy to operate .

1. a) einen Container (2) zur Aufnahme eines Abfallbeutels umfassend Seitenwände (3), eine Bodenplatte (4) und eine erste Dichtung (5) an der Öffnung (6),
2. b) einen Deckel (7) mit einer zweiten Dichtung (8), wobei der Deckel derart konfiguriert und angeordnet ist, dass er gegenüber der Öffnung (6) des Containers (2) in eine geöffnete Position gebracht werden kann, so dass die Öffnung (6) des Containers (2) zur Einführung eines Abfallbeutels zugänglich ist, und gegenüber der Öffnung (6) des Containers (2) in eine Verschlussposition gebracht werden kann, so dass der Deckel (7) derart formschlüssig mit der Öffnung des Containers (2) interagiert, dass ein in den Container (2) eingebrachter Abfallbeutel zwischen der ersten Dichtung (5) und der zweiten Dichtung (8) gegen den Deckel (7) luftdicht abgedichtet werden kann,
3. c) Mittel (9) zur Erzeugung von Druckluft,
4. d) Mittel (10) zur Erzeugung von Unterdruck, und
5. e) Mittel (11) zum thermischen Verschweißen eines in den Container (2) eingebrachten Abfallbeutels, wenn sich der Deckel in Verschlussposition befindet, wobei sich die Mittel an der Öffnung (6) des Containers und/oder am Deckel (7) befinden, wobei in der Vorrichtung
6. f) der Deckel (7) eine Absaugöffnung (12) aufweist, die derart am Deckel (7) angeordnet ist, so dass in der Verschlussposition aus dem Inneren eines in den Container (2) eingebrachten Abfallbeutels die gasförmige Atmosphäre mittels der Mittel (10) zur Erzeugung von Unterdruck teilweise abgesaugt werden kann,
7. g) der Container (2), bei verschlossener Öffnung (6), luftdicht ist,
8. h) die Bodenplatte (4) des Containers gegenüber den Seitenwänden (3), und in der Verschlussposition in Richtung Deckel (6), verschiebbar ist,
9. i) Mittel (14) zum Verschieben der Bodenplatte (4) gegenüber den Seitenwänden (3) vorhanden sind, und
10. j) der Container (2) eine Einlassöffnung (15) für Druckluft aufweist, die gesteuert mittels eines Einlassventils (16) mit Druckluft, die vom Mittel (9) zur Erzeugung von Druckluft zur Verfügung gestellt wird, beaufschlagt werden kann.

According to the present invention, this object is achieved with a device (1) for collecting and compacting waste

1. a) a container (2) for receiving a rubbish bag, comprising side walls (3), a base plate (4) and a first seal (5) at the opening (6),
2. b) a lid (7) with a second seal (8), the lid being configured and arranged to be placed in an open position opposite the opening (6) of the container (2) such that the opening ( 6) of the container (2) is accessible for inserting a rubbish bag, and can be brought into a closed position opposite the opening (6) of the container (2), so that the lid (7) can be positively connected to the opening of the container (2) interacts in that a waste bag placed in the container (2) can be sealed airtight between the first seal (5) and the second seal (8) against the lid (7),
3. c) means (9) for generating compressed air,
4. d) means (10) for generating negative pressure, and
5. e) means (11) for thermally sealing a garbage bag placed in the container (2) when the lid is in the closed position, the means being located on the opening (6) of the container and/or on the lid (7), wherein in the device
6. f) the cover (7) has a suction opening (12) which is arranged on the cover (7) in such a way that in the closed position the gaseous atmosphere can be removed from the interior of a waste bag placed in the container (2) by means of the means (10) can be partially sucked off to generate negative pressure,
7. g) the container (2) is airtight when the opening (6) is closed,
8. h) the bottom plate (4) of the container can be displaced in relation to the side walls (3) and in the closed position in the direction of the lid (6),
9. i) there are means (14) for displacing the base plate (4) relative to the side walls (3), and
10. j) the container (2) has an inlet opening (15) for compressed air, which can be pressurized by means of an inlet valve (16) with compressed air provided by the means (9) for generating compressed air.

1. a) den Schritt des Absaugens eines Teils der gasförmigen Atmosphäre aus einem Abfallbeutel, der Abfall enthält, unter
2. b) gleichzeitigem mechanischem Zusammenpressen des Abfallbeutels sowie
3. c) gleichzeitiger äußerer Luftdruckbeaufschlagung des Abfallbeutels.

The object is also achieved by a method for collecting and compacting waste comprehensively

1. a) the step of evacuating a portion of the gaseous atmosphere from a waste bag containing waste
2. b) simultaneous mechanical compression of the waste bag and
3. c) simultaneous external air pressurization of the waste bag.

This method can be carried out particularly advantageously by a device according to the present invention.

Advantageous configurations of the device and the method are the subject matter of the dependent claims.

The invention is based on the finding that it is particularly advantageous to collect and compact waste if the compaction is not only carried out by sucking the air out of the waste bag, but in particular by additional simultaneous mechanical compression of the waste bag and pressurizing the same with compressed air. This leads in a simple way to waste with a particularly small space requirement and thus the best possible use of resources.

The invention will now be described in more detail with reference to preferred embodiments.

The device according to the invention for collecting and compacting waste comprises a container for receiving a waste bag. Typical containers are known in the art and are typically generally cuboid or cylindrical in shape. The container comprises an opening, typically the top side, which is preferably complete, and side walls, typically the 4 side walls of the cuboid or the lateral surface of the cylinder, and a container floor. According to the invention, the container is airtight when the opening is closed. This means that the side walls and the container floor or the sliding floor panel form an airtight space inside the container if the opening were closed 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.

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 floor). The seal is at the opening Circumferential, that is, encloses the entire opening of the container. This seal is capable of providing an airtight seal to the opening of a typical waste bag when interacting appropriately with the second seal on the lid. Suitable sealing materials are known in the prior art.

Insofar as seals are used in the present invention, suitable sealing materials are generally known to the person skilled in the art, typical materials include silicone, silicone foam, EPDM, NBR, CR, cellular rubber, foam 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 and second seals. Fluoroelastomers, eg ^Viton® , are preferably used as a seal against the welding and cutting electrodes.

In a preferred embodiment, the device has means for fixing a waste bag to the opening of the container, preferably a clamping frame or clamps. Such a clamping frame is attached to the container by means of a hinge, for example, and encloses the entire opening of the container. Thus, when the frame is folded away, the opening is freely accessible, so that a rubbish bag can be placed in the container, with the rubbish bag coming into contact with the first seal at the opening. The clamping frame or the clamping clamps are then closed and are thus able to fix the waste bag to the container. In one embodiment, the first seal, with the covering waste bag, is not or only partially covered by the means for fixing a waste bag, and in particular remains essentially accessible for interaction with the second seal of the lid. In an alternative embodiment, the first seal is contacted by the means for fixing a waste bag, via the waste bag if this is inserted, and in the closed position also lies completely between the first seal on the container opening and the second seal on the lid. The use of a clamping frame has the advantage that the waste bag can be placed neatly over the first seal on the container opening when it is inserted and fixed to the container using the means for fixing a waste bag, preferably the clamping frame or the clamps. This leads to high tightness when the second seal on the lid in the closed position comes into contact with the waste bag and possibly with the means for fixing a waste bag.

The container of the device according to the invention has a sliding base plate inside, which is typically essentially planar. According to the invention, the base plate is designed as a kind of piston that is movable within the container, ie perpendicular to the surface of the base plate, along the side walls, slidably arranged. In one embodiment, the base plate of the container is sealed airtight with respect to the side walls by means of a third seal. In this embodiment, with the opening 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 enable the compressed air to be guided in the direction of the upper side of the base plate. In a preferred alternative embodiment, the base plate of the container is not sealed airtight relative to the side walls by means of the third seal, rather the side walls and the container base form the airtight container when the opening is closed. The latter embodiment has the advantage that the third seal does not have to be airtight with respect to the compressed air as soon as it is fed into the interior of the container, which would place greater demands on the material to be used. An inlet opening below the base plate is also sufficient for pressurizing the interior of the container with compressed air.

In principle, the base plate can be displaced in relation to the side walls and in the closed position of the cover in the direction of the cover (perpendicular to the surface of the base plate). For this purpose, there are preferably corresponding guide grooves or strips in the side walls. By shifting the bottom plate, the volume of the container, defined by the space into which the waste bag can be inserted, can be reduced. During the displacement, the third seal (also referred to as the “seal on the base plate”) seals the base plate in any position of the base plate in an airtight manner in relation to the side walls, in one of the embodiments described above, typically at least to prevent dirt from getting under the base plate . When the container is opened, it is hermetically sealed by the side walls (these are also airtight) and either by the base plate or at least by the container base.

The container is said to be airtight if, with the opening closed, the container maintains an applied negative pressure of 500 mbar (absolute pressure inside) for at least 30 minutes below 800 mbar (absolute pressure inside).

According to the invention, the container has an inlet opening for compressed air, which can be pressurized, preferably controlled by an inlet valve, with compressed air that is made available by the means for generating compressed air. Compressed air can thus be introduced into the interior of the container, which is airtight, via the inlet opening. When a rubbish bag is slipped over the container opening and with interacts with the first seal, either via the means for fixing a waste bag or via the second seal of the lid in the closed position, the space between the waste bag and the container is hermetically sealed. Introduction of pressurized air into the space between the waste bag and the container and with the lid in the closed position thus leads to compression and thus compaction of the contents of the waste bag. According to the invention, the device is preferably configured in such a way that the compressed air, when used for the means for moving the base plate, can also be guided to the inlet opening, and thus into the interior of the container, in a controlled manner by means of an inlet valve.

In order 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. On the one hand, these means for moving the bottom plate are typically suitable for holding the bottom plate in the position of maximum extension of the volume of the container, in any case they are suitable for holding the bottom plate perpendicular to its surface, and in the closed position of the lid in the direction of the lid or direction Container opening to move such that the volume of the container can be reduced. The means for moving the base plate is able to move the base plate in the direction of the container opening, preferably with a compressive force of about 50 kPa to about 1000 kPa, preferably about 100 kPa to about 800 kPa, in particular from about 300 kPa to about 600 kPa . With this force, when the lid is closed, the waste bag placed in the container, including its contents, can be mechanically compressed. The possible extension of the displacement of the base plate is preferably at least such that the volume of the container, defined by the space into which the waste bag can be inserted, with the opening closed by the lid, by 50%, ie to 50% of the maximum extension. preferably by 70%, ie to 30% of the maximum extent can be reduced. Suitable means for moving the base plate are, for example, worm rods, hydraulic cylinders, for example with 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 made available by the means for generating compressed air contained in the device according to the invention. The means for displacement preferably include restoring elements, for example spiral springs. The restoring elements bring about or support a retraction (away from the lid) of the base plate after the rubbish bag has been mechanically compacted. The restoring forces are typically lower than the compressive forces, preferably from about 50 kPa to about 500 kPa, preferably from about 100 kPa to about 300 kPa. The means for moving the bottom plate is here configured so that it is both the above compressive force as can also supply the restoring force, i.e. the sum of the two.

The device according to the invention also has a cover. This is configured to cover 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 is configured and arranged in the device so that it can be placed in an open position opposite the opening of the container, so that the opening of the container is accessible for the insertion of a waste bag, and in a closed position opposite the opening of the container so that the lid interacts with the opening of the container in a form-fitting manner in such a way that a garbage bag placed in the container can be sealed airtight against the lid between the first seal (at the container opening) and the second seal (at the lid). The extent of the second seal thus essentially corresponds to that of the first seal, that is to say essentially to that of the container opening. So if a rubbish bag is placed in the container and placed over the opening and thus over the first seal, the rubbish bag is clamped and sealed between the first seal and the second seal and optionally the means for fixing a rubbish bag in the closed position. This seals the waste bag with the lid and the interior of the bag is only in contact with the lid (and the bag itself).

According to the invention, the lid has a suction opening which is arranged on the lid in such a way that in the closed position the gaseous atmosphere can be at least partially sucked off from the interior of a waste bag placed in the container by means of the means for generating negative pressure. As stated above, the lid is configured such that, in the closed position, the waste bag is clamped and sealed between the first seal and the second seal, and optionally the means for fixing a waste bag. The waste bag is thus closed with the lid and the interior of the bag is only in contact with the lid (and the bag itself). This allows the gaseous atmosphere to be extracted from the waste bag through the suction opening on the lid. The negative pressure required for this is provided by the means for generating negative pressure, as defined further below. A liquid sensor is preferably provided on the cover next to the suction opening. The latter makes it possible, in the event that liquids from the waste bag reach the lid or are sucked off, that the suction process can be stopped to protect the components of the device from contamination.

The device according to the invention also has means for generating compressed air. Suitable means, eg pumps or compressors, are known in the prior art. The compressed air that can be generated preferably has at least 1.0*10 ⁵ Pa (100 kPa, 1 bar) overpressure, preferably at least 2.0*10 ⁵ Pa (200 kPa, 2 bar) overpressure. The compressed air can be used to introduce it via the inlet opening into the interior of the container and for the means for moving the base plate, provided the means are air-operated, for example pneumatic cylinders or bellows.

The device according to the invention also has means for generating negative pressure. Suitable means, eg vacuum pumps, are known in the prior art. The negative pressure that can be generated is preferably at least 5.0*10 ⁴ Pa (50 kPa, 500 mbar) absolute pressure, preferably at least 2.0*10 ⁴ Pa (20 kPa, 200 mbar) absolute pressure. The vacuum pump must therefore be able to generate an absolute pressure of 500 mbar, preferably 200 mbar, in the interior of the container and thus in the waste bag. The negative pressure is used to evacuate the gaseous atmosphere from the waste bag. The device preferably has suitable means, for example a vacuum hose, in order to direct the vacuum to the cover, and in particular to the suction opening on the cover. The means for generating negative pressure preferably include a filter, preferably a carbon filter, and/or a liquid sensor. The latter makes it possible that, in the event that liquids are sucked out of the waste bag, the suction process can be stopped to protect against contamination of the components of the device.

The device according to the invention also has means for thermally sealing a waste bag placed in the container. The means can be located at the opening of the container and/or on the lid. Suitable means for thermally sealing plastic bags, such as refuse bags made from PE (polyethylene), PP (polypropylene) or PLA (polylactides) are known in the prior art. Thermal welding is a process in which plastic films are first heated and then pressed together under pressure in such a way that they are permanently connected. Typical means for thermal welding are heating electrodes, in particular strip electrodes, as are known in the art and are commercially available. Typically, an edge band or wire is used. Depending on the process, appropriate welding temperatures are used, something in the range of 80°C to 140°C, eg approx. 80°C for thermoplastics such as PP and PE, up to 140°C for PLA films. Suitable welding times are from about 0.1 to 5 seconds, preferably about 0.5 to 3 seconds. The duration of the welding is preferably carried out under temperature control, the temperature control is determined, as is known in the prior art, via the electrical resistance of the edge band or wire. This ensures a sufficient duration for a complete, tight welding.

Suitable parameters, such as the dimensioning of the edge band or wire and the power supply, for the thermal welding of plastic films are known in the prior art. The edge band or wire is preferably coated with a PTFE layer in order to prevent the plastic film from caking. The means located at the mouth of the container and/or the lid are arranged such that, when the lid is in the closed position, a garbage bag stretched across the mouth of the container with a corresponding part of the bag , for example a folded flap of the bag, or a separate part when the flap or separate part is placed over the opening, can be closed and sealed. The means for thermal welding, in particular the strip electrodes, are preferably arranged essentially parallel to the first and the second seal, either on the lid and/or on the container opening. In this case, the means for thermal welding are preferably arranged all the way around the container opening in order to ensure that the waste bag is completely closed. This can be realized by means for thermal welding, in particular the strip electrodes, which are arranged on the lid essentially parallel to the second seal, or on the container opening essentially parallel to the first seal, in each case completely surrounding (around the container opening). If the means for thermal welding, in particular the strip electrodes, are arranged both partially on the lid 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 essentially are arranged fully around the container opening, so together ensure a full circulation. Full circulation is ensured if there is at least a little overlap of the opposite means, ie on the one hand on the lid essentially parallel to the second seal and on the other hand on the container opening essentially parallel to the first seal. This ensures that the waste bag is completely sealed. With respect to the first and second seals, the location of the means for thermal welding, in particular the strip electrodes, is preferably within the respective area spanned by the seals.

In one embodiment, the device according to the invention has means for separating the separate part of a film with which the opening of the container and thus the waste bag inserted is covered. Such means, for example a cut or tear edge, preferably a cutting electrode, are known in the prior art. The latter essentially involves the same electrodes as are used for welding as described above, only the welding time and/or temperature is increased so that the foil material separates. Typical temperatures are about 140°C to about 150°C for a period of about 1.5 to 3 seconds.

The device according to the invention is basically suitable for the use of various waste bags, preferably thermally weldable plastic bags, such as waste bags, made of polyolefins, such as PE (polyethylene) and PP (polypropylene), and polyesters, such as PLA (polylactide ), used.

In a preferred embodiment, the device according to the invention also has means for perforating a waste bag on the cover. These are typically arranged within the area covered by the second seal, in particular on the cover, so that the perforation is made possible within the area covered by the second seal. Also, the means are typically located outside the area spanned by the heat sealing means. As soon as a waste bag that is stretched over the opening of the container is closed with a corresponding part of the bag, for example a flap of the bag folded over, or a separate part if the flap or the separate part is placed over the opening, the invention is achieved mechanically pressed and/or compressed air pressed into the container and/or the gaseous atmosphere sucked out of the inside of the bag in order to compress the waste bag. However, since the waste bag is already closed by pressing on a corresponding part of the bag, for example a folded flap of the bag, or a separate part, by placing the flap or the separate part over the container opening and pressing it into the closed position by means of the lid and the second seal air can no longer escape from the inside of the bag. For this purpose, the means for perforating a waste bag creates a defined "outlet opening" on the waste bag, preferably on the cover, ie for example a flap of the bag folded over, or on the separate part. Suitable means for perforating a garbage bag are, for example, one or more spikes or cut edges. The means for perforating a waste bag can preferably be used in a controlled manner, ie not permanently active, preferably electrically activatable. For example, there are one or more electrically extendable mandrels or one or more electrically extendable blades, which then retract again. This can be activated prior to a grouting or suction step. Subsequent withdrawal of the means 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 the suction opening, or perforated through the suction opening.

In a preferred embodiment, the device according to the invention comprises means for fixing the cover of the waste bag. Before the waste bag is sucked off or sealed, a corresponding part of the bag, for example a flap of the bag folded over, or a separate part, is placed over the container opening. In order to prevent this part, referred to here as the cover, from slipping, the device according to the invention comprises means for fixing the cover of the waste bag, typically one or more clamps or clamping bars. These are preferably positioned at the front of the container, e.g. below the container opening. Preferably, the means for fixing the cover of the garbage bag, typically one or more clamps or clamping bars, interacts with spikes for fixing the cover of the garbage bag. The latter are also positioned accordingly on the front of the container below the container opening. Safety switches are preferably present, for example also at the front of the container, approximately below the container opening, which are arranged so that they interact with the cover of the waste bag, e.g. are triggered by contact with it. The safety switches allow you to check whether the cover of the waste bag has been placed correctly. A welding or separating step should only be carried out in the latter case.

In a preferred embodiment, the device according to the invention also has means on the lid for irradiating the interior of the container with UV light (380 to 100 nm), in particular UV-C light (280 to 100 nm). Irradiation of waste with UV light, especially UV-C light, reduces and inactivates harmful microorganisms, thereby reducing putrefaction and other metabolic processes, and thus reducing odor formation. Suitable lighting means for generating UV light, in particular UV-C light, are known in the prior art, for example UV LEDs. Preferably, the lid also includes a protection device for the means for irradiating the interior of the container, particularly when not in use. Suitable protective devices would be, for example, a shield or cover for the UV lamp that can be rotated or pivoted on the cover. The lid serves as a counter-pressure surface when the rubbish bag is pressed mechanically. The protective device is therefore preferably configured in such a way that it moves in front of the means for irradiating the interior of the container, for example folds out or remains folded out and folds back during irradiation, preferably only during irradiation, and thus releases the beam path to the interior of the container. The folded-out protective device preferably forms essentially one plane with the side surface of the cover, which is directed in the direction of the container. The protective device makes it possible to avoid both contamination and damage to the means for irradiation, in particular during pressing.

The present invention further relates to a method for collecting and compacting waste, comprising a) the step of extracting part of the gaseous atmosphere from a waste bag containing waste, while b) simultaneously mechanically compressing the waste bag and c) simultaneously subjecting the waste bag to external air pressure. According to the invention, therefore, three means are used to reduce the volume of waste: firstly, suction of the gaseous atmosphere from the waste bag, secondly, mechanical compression, which serves to support the removal of the gaseous atmosphere, and, above all, allows higher pressures on the waste, since during suction only the pressure of the air column of 1 bar (10 ⁵ Pa) and finally third exposure of compressed air to the exterior of the waste bag. The latter thus enables pressing from "all directions". According to the invention, these measures a), b) and c) are carried out simultaneously at least at one point in time of the method.

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 negative pressure of at least 5.0*10 ⁴ Pa (50 kPa, 500 mbar) absolute pressure, preferably at least 2.0*10 ⁴ Pa (20 kPa, 200 mbar) absolute pressure, is generated. In step b), the garbage bag is preferably mechanically loaded with a compressive force of about 50 kPa to about 1000 kPa, more preferably about 100 kPa to about 800 kPa, in particular from about 300 kPa to about 600 kPa. In step c), the waste bag is preferably pressurized with compressed air of at least 1.0*10 ⁵ Pa (100 kPa, 1 bar) overpressure, preferably at least 2.0*10 ⁵ Pa (200 kPa, 2 bar) overpressure. The device according to the invention is preferably configured in such a way that these pressures are possible for steps a), b) and c), in particular simultaneously.

In the method according to the invention, it is preferred before steps a), b) and c) of simultaneous suction, mechanical pressing and air pressurization, i.e. before the step of suction of part of the gaseous atmosphere from a waste bag containing waste, with simultaneous mechanical compression of the Garbage bag and external air pressurization of the garbage bag, first carried out a step in which only the garbage bag is mechanically compressed, preferably followed by additional suction of a first part of the gaseous atmosphere from a garbage bag, ie without pressurization. According to the invention, the waste bag is therefore preferably first mechanically pressed, then suction is preferably additionally carried out before the waste bag is most preferably also subjected to air pressure.

Preferably, in the method according to the invention, before the step of sucking off part of the gaseous atmosphere from a waste bag containing waste, while simultaneously mechanically compressing the waste bag and externally pressurizing the waste bag with air, the waste bag is removed by means of a "part of the waste bag or a separate part of the waste bag". (sometimes also referred to as just the "part") closed and sealed by pressing the part on. Since no more air could escape from the waste bag, the cover is perforated in one place, as described above. The gaseous atmosphere can now escape through the perforation opening and, if necessary, part of the gaseous atmosphere can be sucked out of the waste bag.

The reduction of the waste volume by compression and suction according to the invention is typically followed by a step of sealing the waste bag by thermal welding to the cover, preferably during or (immediately) after the suction of part of the gaseous atmosphere from the waste bag.

According to the invention, as described in detail above, the device according to the invention can advantageously be used for the method according to the invention; the method according to the invention is therefore preferably carried out using the device according to the invention as described above. In particular, the movable base plate enables the rubbish bag to be pressed mechanically, being displaceable relative to the side walls in the direction of the lid, which is in the closed position, and thus the volume of the container can be reduced. A portion of the gaseous atmosphere is then sucked out of a waste bag containing waste through the cover, preferably while maintaining the mechanical pressure exerted by the base plate. Finally, compressed air, which is made available by the means for generating compressed air, is pressed through the inlet opening of the container, e.g. controlled by means of an inlet valve, preferably while maintaining the pressing pressure through the base plate and/or while maintaining the suction, and thus the waste bag additionally pressed. This achieves maximum compression of the waste. Finally, the waste can be sealed in the waste bag and disposed of.

• Figur 1 zeigt eine schematische Ansicht einer erfindungsgemäßen Vorrichtung.
• Figur 2 zeigt eine schematische Ansicht der Rückseite einer erfindungsgemäßen Vorrichtung.
• Figur 3 zeigt eine schematische Ansicht einer erfindungsgemäßen Vorrichtung mit ausgefahrenen Containern.
• Figur 4 zeigt eine schematische Ansicht zweier Container einer erfindungsgemäßen Vorrichtung.
• Figur 5 zeigt eine schematische Ansicht zweier Container einer erfindungsgemäßen Vorrichtung mit geöffneten Spannrahmen.
• Figur 6 zeigt eine schematische Ansicht der Rückseite zweier Container einer erfindungsgemäßen Vorrichtung.
• Figur 7 zeigt eine Detailansicht zweier Container einer erfindungsgemäßen Vorrichtung.
• Figur 8 zeigt eine schematische Ansicht zweier Container einer erfindungsgemäßen Vorrichtung ohne Seitenwand des Containers.
• Figur 9 zeigt eine schematische Ansicht zweier Container einer erfindungsgemäßen Vorrichtung ohne Seitenwand des Containers und ohne Bodenplatte.
• Figur 10 zeigt eine schematische Ansicht zweier Container einer erfindungsgemäßen Vorrichtung ohne Seitenwand des Containers mit ausgefahrenem Mittel zum Verschieben der Bodenplatte.
• Figur 11 zeigt eine schematische Ansicht zweier Container einer erfindungsgemäßen Vorrichtung ohne Seitenwand des Containers mit ausgefahrenem Mittel zum Verschieben der Bodenplatte ohne Bodenplatte.
• Figur 12 zeigt eine schematische Ansicht zweier Deckel einer erfindungsgemäßen Vorrichtung im ausgefahrenen Zustand.
• Figur 13 zeigt eine Detailansicht zweier Deckel einer erfindungsgemäßen Vorrichtung.
• Figur 14 zeigt eine Detailansicht zweier Deckel einer erfindungsgemäßen Vorrichtung von der Rückseite.
• Figur 15 zeigt eine Aufsicht einer erfindungsgemäßen Vorrichtung.
• Figur 16 zeigt einen Schnitt A-A wie in Figur 15 angedeutet.
• Figur 17 zeigt eine Detailansicht B aus dem Schnitt A-A von Figur 17.
• Figur 18 zeigt eine Detailansicht C aus dem Schnitt A-A von Figur 17.
• Figur 19 zeigt eine Detailansicht B aus dem Schnitt A-A von Figur 17.
• Figur 20 zeigt eine Detailansicht C aus dem Schnitt A-A von Figur 17.
• Figur 21 zeigt eine Detailansicht zweier Container einer erfindungsgemäßen Vorrichtung.
• Figur 22 zeigt eine Detailansicht zweier Container einer erfindungsgemäßen Vorrichtung.
• Figur 23 zeigt einen Schnitt durch die erfindungsgemäße Vorrichtung von Figur 22.
• Figur 24 zeigt eine Detailansicht aus Figur 23.
• Figur 25 zeigt eine Detailansicht aus Figur 23.

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 the rear of a device according to the invention.
• figure 3 shows a schematic view of a device according to the invention deployed containers.
• figure 4 shows 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 the clamping frame open.
• figure 6 shows a schematic view of the rear 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 side wall of the container with extended means for moving the bottom plate.
• figure 11 shows a schematic view of two containers of a device according to the invention without a side wall of the container with an 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 covers of a device according to the invention.
• figure 14 shows a detailed view of two covers 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 section AA as in figure 15 implied.
• figure 17 shows a detailed view B from section AA of FIG figure 17 .
• figure 18 shows a detailed view C from section AA of FIG figure 17 .
• figure 19 shows a detailed view B from section AA of FIG figure 17 .
• figure 20 shows a detailed view C from section AA of FIG figure 17 .
• figure 21 shows a detailed view of two containers of a device according to the invention.
• figure 22 shows a detailed view of two containers of a device according to the invention.
• figure 23 shows a section through the device according to the invention from FIG figure 22 .
• figure 24 shows a detailed view figure 23 .
• figure 25 shows a detailed view figure 23 .

A device (1) according to the invention is figure 1 shown, designed here as a base unit with front cover, control element and skirting board, eg suitable for a kitchen unit. The pull-out middle part, fixed by the side pull-out rails, includes the container unit, the upper part with the controls includes the cover unit, which is preferably also designed to be extendable for service purposes.

figure 2 shows a device (1) according to the invention from the rear, here also designed as a base unit with a front cover and skirting board, for example suitable for a kitchenette. The means (9) for generating compressed air, indicated here as a compressor, and the means (10) for generating negative pressure, indicated here as a vacuum pump, are visible from the rear. These means are both provided in the container unit. The activated charcoal filter (19) is mounted above the vacuum pump. The pressure/vacuum lines are not drawn.

figure 3 shows a device (1) according to the invention, as in figure 1 shown, designed as a base unit with skirting board and control element, eg suitable for a kitchen unit. The front cover is not shown. The central part, which includes the container unit, is shown pulled out by means of the lateral pull-out rails. The upper part with the operating elements, which includes the cover unit, is shown in the retracted state. The container unit comprises two containers (2) with the respective side walls (3) and openings (6). The first seal (5) is provided at the opening of each container.

figure 4 shows a detailed view of the container of the device (1) according to the invention. The containers are essentially made up of the side walls (3) and the container floor (not visible here). The sliding base plate (4) is located inside the container. The first seal (5) is provided at the opening (6) of each container. The means for thermal welding (11) are designed as strip electrodes on the openings (6), but only around a third of the circumference of the openings (6). The corresponding electrodes on the lid, not shown here (see 12 ), complete the heat sealing means (11) for completely circumnavigating the openings. This ensures that the waste bag is completely sealed when it is welded. Alternatively, the strip electrodes can also be designed to run all the way around the container opening. The control for the thermal sealing means (11a) supplies the thermal sealing means (11) on the opening (6) or the lid (7). The seal on the base plate (13) (also referred to as the "third seal") seals the base plate (4) airtightly in any position of the base plate (4) relative to the side walls (3), in one of the embodiments described in detail above, preferably at least to prevent contamination can get under the base plate (4), from. When the opening (4) of the container is closed, the side walls (3) (these are also designed to be airtight) and either the base plate (4) or at least the container base (18) (not shown here, see eg 9 ), hermetically sealed. Compressed air can enter the interior of the container through the inlet opening (15) via the controlled inlet valve for compressed air (16). This compressed air serves to compress the waste in the waste bag located inside the container (and above the bottom plate) when the lid 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 means for fixing (17), designed here as a clamping frame and shown in the closed state, encloses the opening (6) on the outside, and if a garbage bag (not shown here) is inserted (with the clamping frame open), it can pinch it and thus attach it to the Fix containers. The means for fixing (17) covers the first seal (5) only partially, here at the end of the opening (6) shown at the front in the figure. In this area, the means for fixing (17), according to a preferred embodiment of the present invention, serves to form a depression for perforation (25). A waste bag inserted with the clamping frame (17) open is stretched over the first seal (5) by means of the clamping frame. Without the depression for the perforation (25), which is preferably formed by the clamping frame covering the first seal (5), when the waste bag is covered for welding, the cover (a part of the waste bag or a separate part) and the waste bag would lie directly on top of each other, so that only the cover could be selectively perforated by the means for perforation (21) or only under certain circumstances. The recess for perforation (25) thus protects the waste bag from the means for perforation (21), the latter can only perforate the cover to allow the gaseous atmosphere to be sucked off and/or the gaseous atmosphere to escape from the inside of the waste bag. This will be more precise at figure 17 described.

figure 5 shows a detailed view of the container (2) of the device (1) according to the invention figure 4 Only the means for fixing (17), designed here as a clamping frame, is shown in the open state. In this state, a rubbish bag (not shown here) can be inserted into the interior of the container through the opening (6).

figure 6 shows a detailed view of the container (2) of the device (1) according to the invention from the rear. The containers (2) include the side walls (3) and the container floor (not visible here) and have the openings (6). The means for fixing (17), designed here as a clamping frame and shown in the closed state, encloses the opening (6) on the outside, and if a garbage bag (not shown here) is inserted (with the clamping frame open), it can pinch it and thus attach it to the Fix containers. For the advantageous utilization of the space in the device (1) according to the invention, especially if this is designed as a base unit, eg suitable for a kitchen unit the means (9) for generating compressed air, indicated here as a compressor, and the means (10) for generating negative pressure, indicated here as a vacuum pump, are arranged in the container unit of the device behind the containers. The activated charcoal filter (19) is mounted above the vacuum pump. The control for the thermal sealing means (11a) is located below the compressor.

figure 7 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 delimited by the side walls (3) and the movable base plate (4), shown here in the "raised" state. At the opening (6) of the container, the first seal (5) is provided, as well as the heat sealing means (11). The seal on the base plate (13) seals the base plate (4) against the side walls (3), either airtight, preferably at least to prevent dirt from getting under the base plate (4). The means for fixing (17) covers the first seal (5) only partially, here at the end of the opening shown at the front in the figure. In this area, according to a preferred embodiment of the present invention, the means for fixing (17) also serves to form the recess for perforation (25).

figure 8 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) (front side wall is not shown) and the container floor (18). The area of the container (2) in which the waste bag can extend is delimited by the side walls (3) and the sliding base plate (4), shown here in the "lowered" state. The seal on the base plate (13) seals the base plate (4) against the side walls (3), either airtight, preferably at least to prevent dirt from getting under the base plate (4). According to the invention, the means for moving the bottom plate (14) preferably comprises both thrust elements, here designed as air bellows, which can move the bottom plate (4) towards the cover, and restoring elements, here designed as spiral springs.

figure 9 shows a detailed view of the interior of a container (2) corresponding to the device (1) according to the invention figure 8 . The containers are essentially formed from the side walls (3) (front side wall is not shown) and the container floor (18). The bottom plate (4) is compared to 8 Not shown. According to the invention, the means for moving the base plate (14), shown here in the "lowered" state, preferably comprise both pusher elements, designed here as air bellows, which are connected by means of a holder and can move the base plate (4) in the direction of the cover also restoring elements, designed here as spiral springs.

figure 10 shows a detailed view of the interior of a container (2) corresponding to the device (1) according to the invention figure 8 , however, the sliding floor panel (4) is brought into the "up" state by the means for sliding the floor panel (14). According to the invention, the means for moving the bottom plate (14) preferably comprises both thrust elements, here designed as air bellows, which can move the bottom plate (4) towards the cover, and restoring elements, here designed as spiral springs. The latter are tensioned in the “raised” state and enable the bottom plate to be reset, for example after the container has been emptied, ie after the pressed and sealed waste bag has been removed.

figure 11 shows a detailed view of the interior of a container (2) corresponding to 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.

figure 12 shows a detailed view of the cover (7) of the device (1) according to the invention, here in the extended state by means of pull-out rails (for service purposes). The lids (7) comprise the second seal (8) on the lid which interacts with the first seal (5) on the container opening (not shown here) in the closed position. The means for thermal welding (11) are designed as strip electrodes, but only for about two thirds of the circumference of the opening. The corresponding electrodes at the container opening, not shown here (see e.g 4 ), complete the heat sealing means (11) for complete circumambulation around the opening. This ensures that the waste bag is completely sealed when it is welded. The atmosphere can be sucked out of the waste bag through the suction openings (12).

figure 13 shows a detailed view of the cover (7) of the device (1) according to the invention, shown here from below in the direction of the container. The lids (7) comprise the second seal (8) on the lid which interacts with the first seal (5) on the container opening (not shown here) in the closed position. The means for thermal welding (11) are designed as strip electrodes, but only for about two thirds of the circumference of the opening. The atmosphere can be sucked out of the waste bag through the suction opening (12). The suction opening (12) also accommodates the means for perforation (21). The protective device (20) can be folded away during operation, thereby freeing the optical access of the means for irradiation, typically a UV lamp, to the interior of the container. The light from the UV lamp can thus, as soon as the protective device (20) has been moved aside, e.g. rotated or pushed, the interior of the

reach containers. In the closed state, the protective device (20) essentially forms a plane with the side surface of the lid (7), which is directed towards the container in the closed position.

The covers (7) of the device (1) according to the invention remain in the retracted state during normal operation of the device, as in figures 1 and 3 shown. For the introduction of waste into the waste bag, typically the container unit, as in 3 shown, extended, and after bringing in the waste again as in 1 shown, retracted. Normally when retracted the lid (7) with the second seal (8) is lowered so that the second seal (8) interacts with the first seal (5) at the container opening in the closed position and the waste bag is removed by means of the lid (7). seals. In this way, an odor nuisance caused by the waste is avoided. In addition, after the retraction of the container unit, the waste can be irradiated at the lid by the means for irradiating the interior of the container with UV light. In one embodiment, each time the container unit is driven in after the waste has been brought in, a part of the atmosphere is sucked out of the garbage bag.

figure 14 shows a detailed view of the cover (7) of the device (1) according to the invention, shown here from above. The atmosphere can be sucked out of the waste bag through the suction opening (12). The housing that normally encloses the suction opening, the UV lamp (26) and the protective device (20) is not shown. The waste bag can be perforated through the suction opening (12) by the means for perforating (21), indicated here as a blade, which moves along a semicircular cutting area. With the lid shown in the foreground, the UV lamp (26) and guard (20) are not visible, only the opening normally filled by the guard (20) is shown.

figure 15 shows the device (1) according to the invention schematically from above to show the position of the section AA as in FIG figure 16 shown to illustrate.

figure 16 shows the section AA figure 15 . Both the cover unit with the cover (7), the UV lamp (26) and the protective device (20) are shown, as well as the container opening. The means for perforating (21), indicated here as a blade, protrudes through the suction opening (12) and perforates the part of the garbage bag or the separate part that covers the garbage bag. This will be more detailed at figures 17 and 19 explained, which represent the section B. From the container (2), the side walls (3), the clamping frame (17) and the opening of the container are shown. Also indicated is the waste bag, and the part of the waste bag, or the separate part of the Trash bag covers, and thus spans the container opening. This will be more detailed at Figures 17 to 20 explained.

figure 17 shows section B figure 16 with more details for the process step of perforating and suctioning. Section B shows the upper edge of the container (2) with the first seal (5) at the opening of the container. The lid (7) is shown in the closed position, the second seal (8) on the lid interacting with the first seal (5), here via part of the clamping frame (17) including a corresponding further seal on the clamping frame (17a). The means for thermal welding (11), designed here as strip electrodes, are arranged on the cover. A rubbish bag (23) is shown inserted into the container and rests against the side wall (3) inside the container. The means for fixing the waste bag (17), designed here as a clamping frame, stretches the waste bag over the container opening, in particular over the first seal (5) at the opening of the container. In the case of section B, the clamping frame (17) presses the waste bag (23) directly onto the first seal (5), since here the clamping frame (17), including the further seal on the clamping frame (17a), over the first seal (5) protrudes. For areas where the means for fixing the waste bag (17) does not protrude beyond the first seal (5), such as in figure 4 shown and to figure 4 discussed, the means for fixing the waste bag (17) only stretches the waste bag over the first seal (5). In order to close the garbage bag when the intended fill level is reached, a part, for example a flap of the garbage bag or, preferably, a separate part of the garbage bag (24), for example from an endless roll, must be placed over the container opening. This is typically done manually with the container unit extended, but appropriate means may also be provided to automatically position the separate part, e.g. a flap of the rubbish bag, or, preferably, a separate part (24), e.g. This can also be done for the container unit when it is retracted, as in 1 shown, be provided. After the container unit has been moved into the device (1) according to the invention, which can be provided and carried out manually or automatically, for example at the push of a button, as in figure 17 shown with the lid in the closed position. Here, the second seal (8) of the cover is pressed onto the clamping frame (17) including a corresponding further seal (17a), and this onto the first seal (5). For areas where the clamping frame does not protrude beyond the first seal (5), such as in figure 4 shown and to figure 4 discussed, the clamping frame only stretches the garbage bag over the first seal (5). Here the second seal (8) of the cover is pressed directly onto the first seal (5). In both cases the second seal (8) of the lid seals the part of the garbage bag, for example a flap of the garbage 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 inside the garbage bag could not be sucked out in this state, or the atmosphere inside the garbage bag could not escape when the garbage bag was compressed. In order to make this possible, a defined opening is created in the cover of the waste bag by means of the perforation (24). The depression for the perforation (25) created by the clamping frame (17) by covering the first seal (5) enables selective perforation of the covering part of the garbage bag, for example a flap of the garbage bag, or, preferably, the separate part (24), such as in figure 17 shown. As in section B of the figure 17 also shown, according to a preferred embodiment of the present invention, the means for fixing (17) serves to form a cavity for perforation (25). Without the depression for the perforation (25), which is preferably formed by the clamping frame covering the first seal (5), when the waste bag is covered for welding, the cover (a part of the waste bag or a separate part) and the waste bag would lie directly on top of each other, so that the means for perforating (21) could not selectively perforate only the cover. The depression for perforation (25) thus protects the waste bag from the means for perforation (21), the latter can only perforate the cover. After the perforation has taken place, part of the atmosphere can be sucked out of the interior of the waste bag through the suction opening (12), as indicated by the arrow, or part of the atmosphere can escape from the inside of the waste bag when the same is pressed, namely through the suction gap (22) remaining between the garbage bag (23) and the covering part of the garbage bag, e.g. a flap of the garbage bag, or, preferably, of the separate part (24).

figure 18 shows section C figure 16 with more details according to the process step of perforating and suction as in figure 17 . Section C shows the upper edge of the container (2) with the first seal (5) at the opening of the container. The lid (7) is shown in the closed position, the second seal (8) on the lid interacting with the first seal (5). The means for thermal welding (11), designed here as strip electrodes, are arranged on the container. A rubbish bag (23) is placed in the container and rests against the side wall (3) inside the container. The means for fixing the waste bag (17), designed here as a clamping frame, stretches the waste bag over the container opening, in particular over the first seal (5) at the opening of the container. To close the garbage bag is, according to the invention, a part, for example a flap of the garbage bag, or, preferably, a separate part of the garbage bag (24), for example from a continuous roll, over which container opening laid. As in figure 18 , accordingly figure 17 , the lid is shown in the closed position. Here the second seal (8) of the lid is pressed onto the first seal (5) and the second seal (8) of the lid 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 means for welding (11) and the corresponding opposing counter surface, the suction gap (22) remains between the garbage bag (23) and the covering part of the garbage bag, for example a flap of the garbage bag, or, preferably, the separate part (24).

figure 19 shows section B figure 16 with more details for the welding step. As in figure 17 the lid is also shown in the closed position, but further lowered to allow the waste bag to be sealed. Here the lid is pushed 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 clamping frame (17) including a corresponding further seal (17a). The means for thermal welding (11) arranged on the lid, designed here as strip electrodes, now lie directly on the corresponding opposite surface of the container opening, which is figure 17 any remaining suction gap (22) is closed. The garbage bag (23) placed in the container is thus in contact below the means for thermal sealing (11) with the part, e.g. a flap of the garbage bag, or, preferably, a separate part of the garbage bag (24), e.g. from a continuous roll and can be welded to it and thereby sealed.

figure 20 shows section C figure 16 with more details for the welding step. Across from figure 18 the lid is also in the closed position, but lowered further to allow the waste bag to be sealed. The lid is pushed 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 clamping frame (17 ) including a corresponding further seal (17a). The means for thermal welding (11) arranged on the container (2), here in the form of strip electrodes, are now in direct contact with the corresponding counter-surface of the lid, which is shown in figure 18 any remaining suction gap (22) is closed. The garbage bag (23) placed in the container is thus above the means for thermal welding (11) with the part, e.g. a flap of the garbage bag, or, preferably, a separate part of the garbage bag (24), e.g from an endless roll, in contact and can be welded to it and thus sealed.

figure 21 shows a section of a preferred device according to the invention, designed here as a base unit with a front cover, control element and skirting board, for example suitable for a kitchen unit. The pull-out middle section, fixed by the side pull-out rails, includes 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) run all 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 by a separate part of the waste bag (24) and is thus shown closed. As shown in the figure, the separate part of the garbage bag (24) comes from a roll (30) (continuous roll) which stores several parts of the garbage bag (24) intended to cover the garbage bag. The roller (30) is preferably arranged at the rear end of the container, ie at the end of the container which is further away from the front cover. As in the in figure 21 In the state shown, the roll (30) is preferably arranged in such a way that, in order to close the garbage bag, a separate part of the garbage bag (24) can be unrolled from the roll (30) and placed over the container opening. The part of the garbage bag (24) can then be fixed by the means for fixing the cover of the garbage bag (27), here designed as a foldable frame on the front of the container. Here, the means for fixing the cover of the garbage bag (27) preferably presses the part of the garbage bag (24) onto mandrels for fixing the cover of the garbage bag (27a). Typically between the roller (30) and the opening of the container there are means for cutting off (29), designed here as a cutting electrode. Alternatively, the means for separating (29) can also be designed as a tear-off edge. Safety switches (28) are preferably arranged in such a way that they are activated when the part of the waste bag (24) is correctly placed on the opening of the container. This arrangement allows that once the part of the garbage bag (24) which will close the garbage bag is placed over the opening of the container, the part (24) can be fixed by the means for fixing the cover of the garbage bag (27), whereby the safety switches (28) are activated when the part (24) is correctly placed on the opening of the container. The garbage bag can then be fully circumferentially sealed and sealed to the mouth of the container by the thermal sealing means (11) and, preferably after sealing the garbage bag, the part (24) by the means for severing (29) from the roll (30) be separated. Finally, after opening the means for fixing the cover (27) and the means for fixing the waste bag (17), the welded waste bag can be be removed from the container.

figure 22 shows the detail of a preferred device according to the invention figure 21 . In the container shown in the foreground, the opening of the container is shown covered and sealed by a separate portion of the trash bag (24). Compared to figure 21 the means for fixing the cover of the waste bag (27), here designed as a foldable frame at the front of the container, is shown closed. The part of the waste bag (24) is thus fixed. The means for fixing the cover of the waste bag (27) preferably presses the part of the waste bag (24) onto mandrels for fixing the cover of the waste bag (27a) and activates the safety switches (28) (not shown here).

figure 23 shows a section through a preferred device according to the invention figure 16 . In the container shown, the opening of the container is covered by a separate part of the waste bag (24) and the waste bag (23) inserted is shown closed with it. As shown in the figure, the separate part of the garbage bag (24) comes from a roll (30) (continuous roll) which stores several parts of the garbage bag (24) intended to cover the garbage bag. In the method of the present invention, three means are used simultaneously to reduce the volume of waste, first, evacuation of the gaseous atmosphere from the waste bag, second, mechanical compression which serves to aid in the removal of the gaseous atmosphere and, most importantly, allows for higher pressures on the waste, and finally, third, exposure of compressed air on the exterior of the waste bag. The evacuation of the gaseous atmosphere from the waste bag, which creates a negative pressure in the waste bag, is shown as "A" in the figure. Pressurization is illustrated by the arrows marked "B". The latter is effected by introducing compressed air into the container, below the base plate in this case. The compressed air flows past the bottom plate seals and acts on the waste bag, which is sealed against the lid. The force from lifting the base plate causes the waste to be mechanically compacted.

figure 24 shows a section accordingly figure 17 with more details for the process step of perforating and suction as well as the application of air pressure. Shown is the top edge of the container, the lid is in the closed position, the second seal on the lid interacts with the first seal, here over part of the stenter including a corresponding further seal on the stenter (as in figure 17 ). The means for thermal welding (11), designed here as strip electrodes, are arranged at the container opening. There is a rubbish bag in the container (23) shown inserted, this is inside the container on the side wall (and the bottom plate, not shown here). The waste bag is stretched over the container opening by the means for fixing the waste bag, designed here as a clamping frame. In order to close the garbage bag when the intended filling level is reached, a part, for example a flap of the garbage bag or, preferably, a separate part of the garbage bag (24), for example from an endless roll, is placed over the container opening. This is typically done manually when the container unit is pulled out, but appropriate means can also be provided which automatically position the separate part (24), for example from an endless roll, over the container opening. The separate part of the waste bag (24) is clamped by the means for fixing the cover of the waste bag (27), a correctly inserted part (24) activates the safety switches (28). With the lid in the closed position, the lid's second seal is positioned directly on top of the container's first seal (see in detail in figure 17 ). The 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. In order to allow the atmosphere to be sucked out of the interior of the bag, a defined opening is created in the cover of the waste bag by means of the perforation. After the perforation has taken place, part of the atmosphere can be sucked out of the interior of the waste bag through the suction opening on the lid, or part of the atmosphere can escape from the interior of the waste bag when the same is pressed. The evacuation of the gaseous atmosphere from the waste bag, which creates a negative pressure in the waste bag, is shown as "A" in the figure. Pressurization is illustrated by the arrows marked "B". The latter is effected by introducing compressed air into the container, below the base plate in this case. The compressed air flows past the bottom plate seals and acts on the waste bag, which is sealed against the lid. The force from lifting the base plate causes the waste to be mechanically compacted.

figure 25 shows the the figure 24 corresponding cutout at the other end of the container, accordingly figure 18 . Shown is the top edge of the container, the lid is in the closed position, the second seal on the lid interacts with the first seal (as in figure 18 ). The means for thermal welding (11), designed here 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 the waste bag, designed here as a clamping frame. According to the preferred embodiment shown, a separate portion of the trash bag (24) is wound from a roll (30) across and into the container opening inserted rubbish bag, typically manually when the container unit is pulled out, but corresponding means can also be provided which automatically position the separate part (24) over the container opening. The seals of the lid and the container seal the separate part (24) against the waste bag (23). The evacuation of the gaseous atmosphere from the waste bag, which creates a negative pressure in the waste bag, is shown as "A" in the figure. Pressurization is illustrated by the arrows marked "B". After suction, the waste bag is sealed to the separate part (24) by welding, and the latter is separated from the roll (30) by the means for separating the separate part (29), designed here as a cutting electrode.

A waste container is thus made available in which a comparatively large quantity of waste can be collected and stored, which can be compacted to the maximum and then disposed of cleanly, and which is at the same time easy to use.

reference character list

1

contraption

2

Container

3

side walls

4

bottom plate

5

First seal at the opening of the container

6

opening of the container

7

Lid

8th

Second seal on the lid

9

Means for generating compressed air

10

Means for generating negative pressure

11

Means for thermal welding

11a

Control for the thermal sealing means

12

suction opening on the lid

13

Gasket on the bottom plate

14

Means for moving the bottom plate

15

inlet opening in the container

16

Inlet valve for compressed air

17

Means for fixing a waste bag

17a

Seal on the means for fixing a waste bag

18

container floor

19

activated carbon filter

20

Protection device for UV lamp

21

means of perforation

22

suction gap

23

waste bag

24

Waste bag flap or separate part

25

Indentation for perforation

26

UV lamp

27

Means for fixing the cover of the waste bag

27a

Spikes for fixing the cover of the waste bag

28

fuse switch

29

means for detaching the separate part

30

Roll of the separate part to cover the waste bag

Claims (14)

Device (1) for collecting and compacting waste comprising a) a container (2) for receiving a rubbish bag, comprising side walls (3), a movable base plate (4) inside and a first seal (5) at the opening (6), b) a lid (7) having a second seal (8), the lid being configured and arranged such that it • can be brought into an open position opposite the opening (6) of the container (2), so that the opening (6) of the container (2) is accessible for the introduction of a garbage bag, and • Can be brought into a closed position relative to the opening (6) of the container (2), so that the cover (7) interacts in such a form-fitting manner with the opening of the container (2) that a waste bag placed in the container (2) is placed between the first seal (5) and the second seal (8) can be sealed airtight against the cover (7), c) means (9) for generating compressed air, d) means (10) for generating negative pressure, and e) means (11) for thermally sealing a waste bag placed in the container (2) when the lid is in the closed position, the means being located at the opening (6) of the container and/or at the lid (7), characterized in that the cover (7) has a suction opening (12) which is arranged on the cover (7) in such a way that in the closed position the gaseous atmosphere can be removed from the interior of a waste bag placed in the container (2) by means of the means (10) for generating can be partially sucked off by negative pressure, the container (2) is airtight when the opening (6) is closed, the bottom plate (4) of the container can be displaced in relation to the side walls (3) and in the closed position in the direction of the lid (6), the device (1) has means (14) for displacing the base plate (4) relative to the side walls (3), and the container (2) has an inlet opening (15) for compressed air, which can be pressurized by means of an inlet valve (16) with compressed air provided by the means (9) for generating compressed air. Device (1) according to claim 1, wherein the lid (7) comprises means (17) for perforating a waste bag. Device (1) according to Claim 1 or 2, in which the means (14) for displacing the base plate (4) are driven by compressed air which is made available by the means (9) for generating compressed air. Device (1) according to one of the preceding claims, which is configured in such a way that the compressed air used for the means (14) for displacing the base plate (4) is also guided to the inlet opening (15) in a controlled manner by means of the inlet valve (16). can. Device (1) according to one of the preceding claims, in which the means (14) for displacing the bottom plate are pneumatically operated, and are preferably one or more pneumatic cylinders or one or more pneumatic bellows. Device (1) according to one of the preceding claims, wherein the means (10) for generating negative pressure, preferably a vacuum pump, are arranged in the cover (7). Device (1) according to one of the preceding claims, wherein the means (10) for generating negative pressure comprise a filter, preferably a carbon filter, and/or a liquid sensor. Device (1) according to one of the preceding claims, wherein the cover (7) has means for irradiating the interior of the container with UV light. Device (1) according to 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. A method of collecting and compacting refuse comprising the step of evacuating a portion of the gaseous atmosphere from a refuse bag containing refuse while mechanically compressing the refuse bag and externally pressurizing the refuse bag with air. The method of claim 10, wherein prior to the step of evacuating a portion of the gaseous atmosphere from a garbage bag containing garbage while simultaneously mechanically compressing the garbage bag and externally pressurizing the garbage bag with air, a step is first performed in in which only the waste bag is mechanically compressed, followed by additional suction of a first part of the gaseous atmosphere from a waste bag. Method according to one of claims 10 or 11, wherein, before the step of evacuating part of the gaseous atmosphere from a waste bag containing waste, while simultaneously mechanically compressing the waste bag and externally pressurizing the waste bag with air, the waste bag by means of a part of the bag or a separate part of the garbage bag is closed by pressing on the part, this part of the bag or a separate part of the garbage bag is perforated, and part of the gaseous atmosphere is sucked out of the garbage bag through the perforation opening. A method according to any one of claims 10 to 12, further comprising a step of closing the waste bag by thermal welding during or after evacuating part of the gaseous atmosphere from a waste bag. Method according to one of Claims 10 to 13, in which a device according to one of Claims 1 to 9 is used.

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