Greywater storage facility and greywater utilization system

Abstract

Device (500) for storing greywater, comprising a first container (506) for collecting greywater from a greywater inlet (20) connectable to a greywater generator (12) and a second container (586) for providing greywater for a specific use, wherein the second container (586) has a closable outlet (544) connectable to a greywater consumer (702), wherein the first container (506) has an interface (550, 552, 560, 578, 580, 582, 584) for fluid communication with the second container (586), wherein a fresh water connection (302) exists, characterized in that the fresh water connection (302) is connected to the second container (586) but not to the first container (506).

Description

The present invention relates to a gray water storage device according to the preamble of claim 1 and to a gray water use system.Numerous sanitary elements are known which guide a flushing liquid, preferably mostly flushing water, to its operation. These include, for example, water closets (WC), bidets, urinals and the like.It is desirable that grey water is also used in the future for example for such rinsing processes in order to save drinking water. However, suitable devices are to be provided for this purpose, with which the grey water can be supplied to the grey water collector by a grey water generator, with which the grey water can be stored and with which, if appropriate, a supply of fresh water, in particular drinking water, to the grey water is made possible without impairing the drinking water safety. The supply of fresh water is necessary, for example, when sufficient grey water is not available.The present invention relates to gray water storage. In this case, fresh water is usually always added to the grey water when either not sufficient grey water is provided by the grey water generator or a specific fill quantity of grey water exists in the grey water storage.It is an object of the present invention to provide a solution which brings improvements to it. Preferably, the storage should take place in such a way that as much grey water as possible is stored without having to enrich it with fresh water. The supply with fresh water should in particular take place only when it is absolutely necessary. The device should preferably be of a simple design and be able to be produced cost-effectively. Most preferably, the device should be capable of being integrated easily into front wall installations.This object is achieved with the device according to the invention as claimed in claim 1 and the system according to the invention as claimed in claim 16.On the part of the inventor, it was recognized that this object can be achieved in a surprising manner in a particularly simple manner if, in addition to a first container for collecting grey water from a grey water feed, a second container for providing grey water for a purpose of use also exists and the fresh water connection is indeed connected to the second container but not to the first container. It can then be ensured that the second container is preferably filled with grey water from the first container and only with fresh water as required. Thus, more grey water is used and therefore also more fresh water is saved.The device according to the invention for storing grey water, comprising a first container for collecting grey water from a grey water inlet connectable to a grey water generator and a second container for providing grey water for a purpose of use, wherein the second container has a lockable outlet connectable to a grey water collector, wherein the first container has an interface for fluid communication with the second container, wherein a fresh water connection exists, characterised in that the fresh water connection is connected to the second container but not to the first container."Grey water" in the context of the present invention is a fecal-free, low-soiling wastewater from baths, showers or washing machines, which can serve as service water by preparing a second use. Kitchen waste water is not part of grey water because of the higher load with fats and food waste."Fresh water" is, within the scope of the present invention, an unused, uncontaminated water, including drinking water."Drinking water" in the context of the present invention is a fresh water with such a high purity level that, according to the officially defined quality requirements, it is classified as suitable for human use, in particular for drinking and food preparation.Liquids are classified into five different categories according to the danger types they originate from according to EN 1717 or DIN 1988-4:Category 1 denotes a liquid which does not pose any health hazard and which is without impairment in terms of odor, taste or color. This includes, for example, cold drinking water.Category 2 denotes a liquid from which there is likewise no risk to health, but which is an impairment with regard to odor, taste, color or temperature. These include, for example, coffee, tea, drinking water which is colored by rust and warm drinking water.Category 2 denotes a liquid from which health hazards arise from less toxic substances. These include glycol, sodium hydroxide solution, heating water without addition and copper sulfate solution.Category 4 denotes a liquid from which health hazards arise from toxic, very toxic, cancer-causing, mutagenic or radioactive substances associated with the risk of life. These include chemicals, paints, chemical cleaning, electroplating baths, insecticides.Category 5 denotes a fluid from which health hazards arise from diseases which can be transmitted by microbial or viral pathogens if there is a risk of life. These include hepatitis viruses, salmonella and fecal contaminated waterDrinking water coming from the fresh water connection is obviously a category 1 liquid.Drinking water which is stored open and without special provisions is classified as Category 3 liquid for safety reasons. This also includes the fresh water stored in the fresh water container.For safety reasons, untreated grey water is classified as a Category 5 liquid. This also includes the grey water stored in the grey water container.In an advantageous development, it is provided that no fresh water connection exists in the first container. This is particularly reliably prevented from fresh water entering the first container.In an advantageous development, it is provided that the device is designed such that no fresh water can enter the first container. It is then excluded that fresh water can enter the first container, for example, via detours.In an advantageous development, it is provided that the interface for fluid communication has a check valve which prevents the flow of grey water located in the second container into the first container. This effectively prevents the penetration of liquid from the second container into the first container, whereby the first container can always maximally absorb the amount of grey water provided by a grey water generator.In an advantageous development, it is provided that the first container has an overflow which preferably opens into an overflow and / or outlet of a device which provides the grey water, wherein the overflow opens into the outlet of a wash basin in particular. The grey water is then safely discharged from the device in the event that a grey water collector does not decrease sufficiently grey water compared to the grey water produced by a grey water generator.In an advantageous development, it is provided that the first container has a greater maximum capacity than the second container. A large supply of grey water can then be collected and sufficient grey water can always be provided therefrom for use by a grey water collector without the need to use excess fresh water.In an advantageous development, it is provided that the interface for fluid communication is arranged in the region of the bottom of the first container, preferably in its bottom, in particular at the lowest point of the bottom. The device then acts particularly effectively.In an advantageous development, it is provided that the interface for fluid communication is designed as a drain into the second container. The device also then acts particularly effectively.In an advantageous development, it is provided that the outlet has a flushing valve and / or serves for flushing a sanitary object. As a result, the device can be used particularly well for the intended use of the flushing of a sanitary object.In an advantageous development for which independent protection is also claimed, regardless of whether the fresh water connection is connected to the first container or not, it is provided that first delay means are provided which delay the passage of grey water from the first container into the second container in time. In this case, for the device according to the invention for storing grey water, comprising a first container for collecting grey water from a grey water inlet and a second container for providing grey water for a purpose of use, wherein the second container has a lockable outlet, wherein the first container has an interface for fluid communication with the second container, wherein a fresh water connection exists, that is to say the fresh water connection is also connected to the first container. This effectively prevents gray water from coming out of the first container to the outlet during use of the gray water within the scope of the intended use. This ensures that a permanently predefined amount of grey water is always used for the intended use in the second container, so that no grey water is wasted.In an advantageous development, it is provided that the first retardation means are arranged in the region of the bottom of the second container, in particular on the bottom of the second container. As a result, the device is particularly effective.In an advantageous development, it is provided that the first delay means are arranged in the region of the interface for fluid communication. As a result, the device is particularly effective.In an advantageous development, it is provided that the first delay means are part of the interface for fluid communication. As a result, the device is particularly effective and, in addition, is made compact.In an advantageous development, it is provided that the first deceleration means are designed to be automatically active and / or electrically actuated. If the first delay means are automatically active, then no energy supply is required. If the first deceleration means are configured to be electrically actuated, adaptations can easily be implemented. Moreover, more accurate control of the deceleration is possible.In an advantageous development, it is provided that the first delay means bring about a delay time for the inflow of grey water from the first container into the second container and / or into the outlet in the range of 1 s to 10 s, preferably in the range of 3 s to 7 s, more preferably in the range of 4 s to 6 s, in particular of 5 s. It is then ensured that the second container is emptied very widely or completely from the first container before it is filled, and the intended use (for example a flushing process with the grey water stored in the second container) is preferably already concluded.In an advantageous development, it is provided that the first delay means have a grey water guide channel with an inlet from the first container and an outlet into the second container. As a result, the first delay means can be implemented particularly easily in terms of design.In an advantageous development, it is provided that the grey water guide channel has a length in the range from 0.5 cm to 50 cm, preferably in the range from 2 cm to 30 cm, more preferably in the range from 5 cm to 20 cm and in particular in the range from 8 cm to 12 cm. This ensures that the second container is emptied very widely or completely from the first container before it is filled, and the intended use (for example a flushing process with the grey water stored in the second container) is preferably already concluded.In an advantageous development, it is provided that the grey water guide channel is open in the vertical direction at least in regions. Although the grey water guide channel can also be designed closed at the top, it only delays the channel wall (friction effect). If, on the other hand, the grey water guide channel is open at least in regions, then the heavy pressure of the grey water located in the second container, which is in contact with the open part, acts to prevent the grey water flowing in through the channel automatically from flowing in or from overflowing the channel wall, as long as the use process has not yet been completely concluded or the second container has been completely emptied. Furthermore, the partially open grey water channel is advantageous for the transfer after completion of the use process, because then a virtually unhindered outflow through the open channel section is made possible.In an advantageous development, it is provided that the grey water guide channel extends at least partially around the flushing valve, wherein the azimuthal angle of the extension is preferably in the range between 60° and 360°, preferably in the range 90° to 270° and is in particular 180°. The device is then of particularly compact construction.In an advantageous development, it is provided that the grey water guide channel extends at least partially around the outlet, wherein the azimuthal angle of the extension is preferably in the range between 60° and 360°, preferably in the range 90° to 270° and is in particular 180°. The device is then of particularly compact construction.In an advantageous development, it is provided that the grey water guide channel is curved. The device is then of particularly compact construction.In an advantageous development, it is provided that the grey water guide channel is designed to be extendable. Then, adjustments to the delay time can be easily made by adjusting the length of the gray water guide channel.In an advantageous development, it is provided that the grey water guide channel has, at least in regions, a cross section transversely to the flow direction through the grey water guide channel in the range from 1 cm 2 to 10 cm 2, more preferably in the range from 2 cm 2 to 8 cm 2 and in particular in the range from 3 cm 2 to 5 cm 2 As a result, only very little grey water can flow through the grey water guide channel, which leads, above all in conjunction with an open-topped grey water guide channel (wherein the area of the openings is, at the top, preferably greater than this cross-sectional area, preferably at least 2 to 4, in particular at least 5 to 10 times as large), the grey water located in the second container effectively reduces the flow of grey water through the grey water guide channel due to its hydraulic pressure when it flows out of the second container. If, on the other hand, the outflow of the second container is closed, the grey water can rise directly upward from the grey water guide channel and thus fill the second container.In an advantageous development, it is provided that the grey water guide channel has, at least in regions, a narrowing of the cross section transversely to the flow direction through the grey water guide channel of at least 20%, preferably of at least 40%, further preferably of at least 60%, in particular of at least 80%. As a result, only very little grey water can flow through the grey water guide channel at this point, which, above all in conjunction with an open-topped grey water guide channel, has the result that the grey water located in the second container effectively restricts the flow of grey water through the grey water guide channel as a result of its hydraulic pressure when it flows out of the second container. If, on the other hand, the outflow of the second container is closed, the grey water can rise directly upward from the grey water guide channel and thus fill the second container. The constriction enables the grey water to flow off completely, for example during the flushing process, so that there is no dead zone.Alternatively to a constriction, however, the gray water guide channel can also be formed with a closure in the flow direction. As a result, the grey water guide channel is completely blocked by the hydraulic pressure of the grey water located in the second container, but residual grey water would remain in the grey water guide channel in the case of rinsing.In an advantageous development for which independent protection is also claimed, regardless of whether the fresh water connection is connected to the first container or not, it is provided that the overflow of the first container is vertically lower than an overflow of the second container. In this case, for the device according to the invention for storing grey water, comprising a first container for collecting grey water from a grey water inlet and a second container for providing grey water for a purpose of use, wherein the second container has a lockable outlet, wherein the first container has an interface for fluid communication with the second container, wherein a fresh water connection exists, that is to say the fresh water connection is also connected to the first container. In the event of an excessive gray water supply coming from the gray water generator, this prevents the overflow of gray water to the gray water collector, for example a toilet, and its associated contamination.In an advantageous development, it is provided that the overflow of the first container is preferably in the range from 1 cm to 50 cm, preferably in the range from 2 cm to 20 cm, in particular in the range from 2.5 cm to 10 cm, vertically lower than the overflow of the second container. This particularly effectively prevents the contamination of the grey water collector.In an advantageous development for which independent protection is also claimed regardless of whether the fresh water connection is connected to the first container or not, it is provided that the first container comprises a first region and a second region, wherein the first region has the grey water inlet and a separating wall is present between the two regions, which prevents the passage of grey water from the first region into the second region, wherein the separating wall has an overflow which allows the passage of grey water from the first region into the second region as soon as the fill level in the first region exceeds the vertical height of the overflow. In this case, for the device according to the invention for storing grey water, comprising a first container for collecting grey water from a grey water inlet and a second container for providing grey water for a purpose of use, wherein the second container has a lockable outlet, wherein the first container has an interface for fluid communication with the second container, wherein a fresh water connection exists, that is to say the fresh water connection is also connected to the first container. This has the effect that even in the case of only a low gray water occurrence in a gray water generator, the largest possible amount of gray water can nevertheless be transferred into the second container and supplied to the intended use.In an advantageous development, it is provided that the first region has a volume in the range from 0.5 l to 5 l, preferably in the range from 1 l to 2.5 l, in particular from 1.5 l to 2 l. This further improves the function of the first region because such quantities are relatively frequently obtained, for example, for wash basins.In an advantageous development, it is provided that the first region has a vertical height in the range from 10 cm to 20 cm, preferably in the range from 13 cm to 17 cm, in particular of 15 cm. This improves the function of the first region.In an advantageous development, it is provided that the first region has a vertical height which, in comparison with the cross-sectional area of the first container, is greater than 120% of the root from the cross-sectional area, preferably greater than 140% of the root from the cross-sectional area, in particular greater than 160% of the root from the cross-sectional area. As a result, the function of the first region is improved.In an advantageous development, it is provided that both the first region and the second region are in fluid communication with the second container, wherein preferably a) a respective non-return valve is arranged both between the first region and the second container and between the second region and the second container, which non-return valve prevents the flow of flushing water located in the second container into the first region or into the second region and / or b) first delay means are arranged both between the first region and the second container and between the second region and the second container, wherein the first region and the second region are connected in particular to the same first delay means.The transfer of grey water from the first container into the second container is then particularly advantageously solved.In an advantageous development for which independent protection is also claimed, regardless of whether the fresh water connection is connected to the first container or not, it is provided that the fresh water connection is connected to a third container, which is preferably connected to a third container.c) an overflow into the second container, and / ord) has a volume in the range from 10 ml to 300 ml, preferably in the range from 40 ml to 200 ml, in particular in the range from 60 ml to 80 ml.In this case, for the device according to the invention for storing grey water, comprising a first container for collecting grey water from a grey water inlet and a second container for providing grey water for a purpose of use, wherein the second container has a lockable outlet, wherein the first container has an interface for fluid communication with the second container, wherein a fresh water connection exists, that is to say the fresh water connection is also connected to the first container. A particularly reliable supply of fresh water, which at the same time is also quiet, can then be effected.In an advantageous development, it is provided that a fresh water container and a grey water container have separate container walls which are arranged at least in regions spaced apart from one another, wherein there is preferably an air gap between the container walls. As a result, the fresh water is separated from the grey water by a double wall, whereby the grey water transfer is effectively prevented even if the grey water creeps into the fresh water container.In an advantageous further development, it is provided that one or more hydraulic jumps exist downstream of the fresh water connection in the flow direction of the fresh water. Such jumps build up a cascade for water supply, by means of which a transfer of the grey water to the fresh water connection can be prevented particularly effectively. Advantageously, vertical offsets of the fresh water flow exist in the jumps.In an advantageous further development, it is provided that for opening the fresh water connection, an actuating means, preferably in the form of a float valve or a solenoid valve with a fill level sensor, is provided, which is in contact with the fill level of the second container, wherein the actuating means has in particular second delay means. The fresh water supply to the grey water container can then be controlled particularly well. If the actuating means has second delay means, it can be ensured that the grey water container is only filled with fresh water when no grey water is available any longer or a sufficient amount of grey water is already present in the grey water container.In an advantageous development, it is provided that the second deceleration means comprise a container in which a control bore is present. The delay can then be implemented particularly easily by a float valve.In an advantageous development, it is provided that the container has a non-return flap which blocks the inflow of liquid into the container through the control bore, wherein the non-return flap lies in particular at a vertical height of the device which lies above the height of grey water which has passed from a completely filled first container into the second container.In an advantageous development, it is provided that the container has a cover in order to prevent the direct penetration of fresh water from the fresh water container. The delay time of the second delay means is then very precise and only dependent on the fill level in the grey water container.In an advantageous development, it is provided that the container has an inlet edge which is lower than a maximum fill level of the second container. Then, the effect of the delay is optimized.In an advantageous development, it is provided that the floating body of the float valve is arranged in the container. The effect of the delay is then also optimized.In an advantageous development, it is provided that the second delay means bring about a time delay between a drop in a fill level in the second container and the supply of fresh water into the third container in the range from 0 s to 30 s, preferably from 5 s to 20 s, in particular from 15 s. Only very little fresh water is then required and the second container can be filled up primarily by the grey water.In an advantageous development, it is provided that the delay time of the second delay means is greater than the time required for establishing a balanced level between the second container and the first container. Only very little fresh water is then required and the second container can be filled up primarily by the grey water.In an advantageous development, it is provided that the first delay means and the second delay means are matched to one another in such a way that the opening of the fresh water connection takes place only when a specific amount of grey water has passed from the first container into the second container. Only very little fresh water is then required and the second container can be filled up primarily by the grey water.In an advantageous development, it is provided that the second delay means are configured to effect the opening of the fresh water connection in the range from 1 s to 60 s, preferably from 5 s to 30 s, in particular from 10 s to 20 s, after the opening of the outlet. Only very little fresh water is then required and the second container can be filled up primarily by the grey water.In an advantageous development for which independent protection is also claimed independently of whether the fresh water connection is connected to the first container or not, it is provided that the first container has a base in the vertical direction which is arranged higher than a base of the second container, wherein it is preferably provided that the vertical distance between the two bases is in the range from 1 cm to 50 cm, preferably in the range from 5 cm to 30 cm, in particular in the range from 8 cm to 15 cm. In this case, for the device according to the invention for storing grey water, comprising a first container for collecting grey water from a grey water inlet and a second container for providing grey water for a purpose of use, wherein the second container has a lockable outlet, wherein the first container has an interface for fluid communication with the second container, wherein a fresh water connection exists, that is to say the fresh water connection is also connected to the first container. This then brings about a quick and as complete as possible transfer of grey water from the first container into the second container.In an advantageous development, it is provided that a housing exists in which the first container and the second container and preferably the third container are arranged according to claim 10, wherein preferablye) all three containers are arranged in the housing and / orf) the second container is delimited by a wall of the housing and the first container, and / org) the housing has a round cross section with respect to a horizontal plane, and / orh) the housing serves as a carrier for a grey water generator, preferably in the form of a wash basin, wherein the housing is in particular configured such that the grey water generator is arranged above the containers arranged in the housing and / ori) the housing is formed integrally with at least one container.As a result, the device can be kept very compact and at the same time can be integrated very well into the system according to the invention.Alternatively, however, it can also be provided that no such common housing exists, wherein, for example, the first container is present as an intermediate storage container in a front wall element of a wash basin and the second container is present as a wash container in a front wall element of a toilet and are fluidically connected to one another. In this case, the first delay means may also comprise a pipe connection between the first container and the second container.In an advantageous development, it is provided that at least one container is formed as part of a front wall installation, wherein preferably the first container and the second container are formed as parts of a front wall installation, wherein in particular the first container is formed as part of a front wall installation of a washbasin installation and / or the second container is formed as part of a front wall installation of a WC, shower WC or bidet installation.In an advantageous development, it is provided that at least one container, preferably the first and the second container in a front wall installation, are arranged not visibly behind a cladding (for example a dry construction wall / tile wall or the like), wherein the cladding has in particular a inspection opening or in each case a inspection opening assigned to the respective container. The containers can then be integrated particularly well into existing installations.A method according to the invention for storing grey water, wherein a first container is used for collecting grey water from a grey water inlet connectable to a grey water generator and a second container is used for providing grey water for a purpose of use, wherein the second container has a lockable outlet connectable to a grey water collector, wherein the first container has an interface for fluid communication with the second container, and wherein a fresh water connection exists, would be characterized in that the fresh water is conducted from the fresh water connection into the second container, but not into the first container.In an advantageous development, it would be provided that the device according to the invention is used.Independent protection is claimed for the system according to the invention for grey water use, which comprises the device according to the invention, wherein there is additionally a grey water generator and / or a grey water collector.In an advantageous development, the system also comprises the device according to the invention for supplying a grey water container with fresh water from a fresh water connection. With this system according to the invention, grey water can be stored in an excellent manner in a grey water container, wherein if there is not sufficient grey water available or if a sufficient amount of grey water has already been filled into the grey water container, then fresh water can be supplied to the grey water container. With regard to the configuration of the device for supplying a grey water container with fresh water from a fresh water connection and of the method for supplying a grey water container with fresh water from a fresh water connection, reference is made to the utility model application DE 20 20 2025 101 374.6, filed on the same day by the applicant, "Device for supplying a grey water container with fresh water from a fresh water connection", the entire content of which is incorporated by reference in its entirety.If the device for supplying a grey water container with fresh water from a fresh water connection is formed with a wall which at least in regions has a spacing from the first container and / or from the second container, wherein the spacing is formed in particular as an air gap, then the fresh water is separated from the grey water by a double wall and the transfer of grey water into a container for storing fresh water can be prevented effectively even if grey water creeps up on container walls.In an advantageous development, the system also comprises the device according to the invention for supplying grey water from a grey water generator to a grey water collector. Then, the gray water can be perfectly taken out from a gray water generator. Preferably, it can be prepared beforehand, in particular filtered and stabilized. With regard to the configuration of the device for supplying grey water from a grey water generator to a grey water collector and the method for supplying grey water from a grey water generator to a grey water collector, reference is made to the utility model application DE 20 20 2025 101 371.1, filed on the same day by the applicant, "Device for supplying grey water from a grey water generator to a grey water collector", the entire content of which is incorporated by reference in its entirety.The possible features of the device according to the invention for supplying grey water from a grey water generator to a grey water collector are given below:The device according to the invention for supplying grey water from a grey water generator to a grey water collector, wherein the grey water generator has a grey water outlet, wherein the device has an inflow, which can be connected to the grey water outlet, and an outflow, is characterized in that the device also has, in addition to the outflow, an outflow connection for the outflow of grey water to the grey water collector."Outlet connection" does not mean within the scope of the present invention that a hose or the like must be connectable thereto; it can also simply be a free outlet or the like. The discharge connection thus ensures overall only the possibility of a grey water collector being connected in fluid fashion to the device according to the invention, wherein this connection can be effected directly or indirectly (for example with the interposition of a grey water storage device).In an advantageous development, it is provided that the device can be fastened in an opening of the grey water generator. It is then possible to integrate it particularly well into an existing grey water generator.In an advantageous further development, it is provided that the grey water generator is a wash basin, a shower, a bathtub, a sink, a washing machine, a tumble dryer or the like. Such grey water generators are available in great numbers in real-life with households, industry, industrial trade and the like, so that grey water which arises there can be used.In an advantageous development, it is provided that the grey water collector is a flushing tank, preferably for a toilet, a urinal or the like. As a result, the grey water produced can be temporarily stored until a removal is desired, as a result of which a particularly large amount of drinking water can be saved.In an advantageous development, it is provided that means for the physical treatment of the grey water consist, wherein the means for the physical treatment preferably have a filter for the grey water. This results in physical treatment of the grey water, which results in less severe burden on sewerage and sewage treatment plants. In addition, a filter also makes it possible to collect objects which only pass unintentionally into the device.In an advantageous development, it is provided that the means for the physical treatment of the grey water comprise a first filter for filtering macroscopic contaminations, such as hairs, rings, ear rings or the like, wherein the first filter preferably has a filter width in the range of 1 mm to 10 mm, preferably in the range of 2 mm to 7 mm, in particular in the range of 3 mm to 5 mm. The first filter is preferably arranged in the axial direction with respect to the longitudinal axis of the device. As a result, objects unintentionally entering the device and such objects which would impair the function of the device can be kept away, wherein the device can nevertheless be designed very compactly.In an advantageous development, it is provided that the means for the physical treatment of the grey water comprise a second filter for filtering microscopic contaminants, wherein the second filter preferably has a filter width in the range of 25 μm to 2 mm, preferably in the range of 50 μm to 1 mm, in particular in the range of 100 μm to 500 μm. As a result, grey water collectors receive grey water which is less laden with suspended matter, so that fewer sludges can form in the grey water collectors and the turbidity is significantly reduced. Preferably, the filter is arranged to flow radially inwardly with respect to the longitudinal axis of the device. Then, the filter on its outer side can be easily cleaned with a ski without having to remove it.In an advantageous development, it is provided that at least one filter of the means for the physical treatment of the grey water has a fabric, preferably a metal, a plastic fabric, a microporous structure or a membrane. As a result, the filter is particularly effective.In an advantageous development, it is provided that at least one filter of the means for physical treatment of the grey water has an overflow which preferably communicates with the outflow. This always results in a reliable discharge of grey water through the device, so that a back-up into the grey water generator or flooding is avoided.In an advantageous development, it is provided that at least one filter of the means for physical treatment of the grey water has an outflow which preferably opens into the outflow connection. As a result, the device is of particularly compact construction.In an advantageous development, it is provided that the means for the physical treatment of the grey water are designed to be at least partially removable from the device. As a result, these means can be cleaned more easily.In an advantageous development, it is provided that the means for the physical treatment of the grey water comprise a dead space. As a result, for example, objects and particles to be filtered off are transferred into a region of the device which does not interfere with the function of the means for physical treatment, so that the means for physical treatment have to be cleaned less frequently.This dead space is preferreda) is arranged between the inflow and the filter in the flow direction of the grey water and / orb) is designed as a vertically extending dead space and / orc) is constructed as an annular space and / ore) is designed to be openable, wherein in particular a side wall of the dead space is designed to be removable, and / orf) is U- or V-shaped.As a result, the dead space is particularly effective and can be easily cleaned.In an advantageous development, it is provided that means exist for the chemical and / or biological treatment of the grey water, wherein the means preferably have a receiving region for a chemical and / or biologically acting treatment substance. As a result, the grey water can also be easily pretreated from a chemical or biological point of view before it is passed to a grey water collector. As a result, the grey water collector has to be cleaned less frequently. Moreover, the grey water can be stored for a longer time.In an advantageous development, it is provided that components of the means for chemical and / or biological treatment of the grey water are arranged in the means for physical treatment of the grey water, preferably a filter, wherein the components are designed in particular to be removable from the means for physical treatment of the grey water. The device is then of particularly compact construction.In an advantageous development, it is provided that components of the means for chemical and / or biological treatment of the grey water are arranged downstream of the filter in the flow direction of the grey water from the inflow to the filter outflow. Then, the chemical and / or biological treatment of the grey water is particularly effective.In an advantageous development, it is provided that the means for the chemical and / or biological treatment of the grey water comprise a container through which the grey water can flow, which container is preferably designed to be openable.The container is preferably designed as a cage, because it can be passed through particularly well. Alternatively or additionally, the container can contain means for guiding the flow, for example in the form of at least one longitudinal rib and / or guide surface, each running parallel, obliquely or curved with respect to the longitudinal axis, or in the form of at least one helix, which guide the liquid in a targeted manner to the treatment substance and bring it into contact or mix it with the latter.If the receiving region is designed to be openable and consequently also closable, the processing substance used is held in the device in a particularly secure manner.Preferably, the means for the chemical and / or biological treatment of the grey water have a closure cap which can be plugged onto the container. The closure cap is preferably elastic. In particular, there is a conicity on the container and / or closure cap, so that a positive closure takes place between container and closure cap.In an advantageous development, it is provided that the means for the chemical and / or biological treatment of the grey water are designed to be at least partially removable from the device. They can then be easily cleaned and / or replenished.In an advantageous development, it is provided that the treatment substance is adapted to act in the sense of at least one of the properties from the group comprising: antimicrobial activity (biofilm formation avoided / reduced), degreasing, fat binding, defoaming, decalcification (lime formation avoided / reduced), odor reduction and deodorizing. Then, the chemical and / or biological treatment is particularly effective and the treated grey water can be used very well further without polluting the grey water collectors.In an advantageous development, it is provided that the discharge connection extends with respect to a longitudinal axis over an azimuthal range of at least 30°, preferably at least 60°, preferably at least 90°, in particular at least 180°. Then, the grey water can be very controlled in normal operation and discharged in a laminar manner from the discharge connection, whereby foaming is effectively prevented. At the same time, however, there is still sufficient installation space to discharge grey water through the overflow channels in the plugging mode.In an advantageous development, it is provided that the discharge connection has a discharge surface which preferably runs inclined in the flow direction of the grey water, wherein the inclination is preferably in the range 1° to 30°, further preferably in the range 5° to 20°, in particular in the range 8° to 15°. A controlled and laminar discharge of the grey water is then made possible.In an advantageous development, it is provided that the device has a housing which preferably has at least one element from the group comprising: outlet housing, overflow housing, filter housing, treatment housing, outlet funnel and valve housing. This construction of the device has proved particularly successful and at the same time enables a very compact design of the device. If at least some of these elements are detachable from one another, the device can be installed, serviced and cleaned particularly well. In particular, the housing is designed to be screwed to the grey water generator, which facilitates integration into existing systems.In an advantageous development, it is provided that the device provides a first path which conducts grey water from the inflow to the outflow, and a second path which conducts grey water from the inflow to the outflow connection, wherein the paths are preferably designed to be switchable, in particular manually switchable. As a result, the device can be used particularly well in daily operation.In an advantageous development, it is provided that the device has an openable closure for the first path. The closure is preferablyg) is embodied in a sealed manner and / orh) are removable and / ori) are arranged on the means for physical processing and / orj) are arranged on the means for chemical and / or biological treatment. As a result, the device is particularly effective.In an advantageous development, it is provided that the second path comprises an overflow of the device, wherein the overflow preferably at least partially bypasses the means for the physical treatment of the grey water, wherein the overflow is connected in particular to the outflow. As a result, the function of the device is maintained even in the event of a blockage of the means for physical treatment of the grey water, without a back pressure to the grey water generator and / or flooding having to be feared.In an advantageous development, it is provided that a vertically extending barrier exists between the first path and the second path, wherein an upper edge of the barrier is preferably configured to be concealed within the scope of the first path, wherein the first path in particular has a channel section which extends vertically to below the upper edge. This particularly effectively prevents unintentional transfer of grey water into the discharge connection.In an advantageous development, it is provided that the first path is formed freely when the closure is removed. As a result, the changeover between the discharge of the grey water to the grey water collector and the transfer of the grey water to the outflow can take place very quickly.In an advantageous development, it is provided that the first path is freely formed when the means for the physical treatment of the grey water and / or the means for the chemical and / or biological treatment are at least partially removed from the device. This results in an automatic changeover from the discharge of the grey water to the grey water collector to the transfer of the grey water to the drain, if for example a cleaning of the means for the physical treatment of the grey water and / or the means for the chemical and / or biological treatment takes place, whereby the impurities produced during the cleaning are automatically transferred into the drain.In an advantageous development, it is provided that the second path is freely formed when the first path is closed. This always provides a clear choice between the discharge of the grey water to the grey water collector and the transfer of the grey water to the drain.In an advantageous development, it is provided that the device is designed to guide grey water from the inflow to the outflow when the first path is closed and the means for the physical treatment of the grey water are at least partially blocked and / or when the first path is closed and the means for chemical and / or biological treatment are at least partially blocked. Then, a back-up to the grey water generator and / or a flooding in the event of a blockage is effectively prevented.The possible features of the device according to the invention for supplying a grey water container with fresh water from a fresh water connection are specified below:The device according to the invention for supplying a grey water container with fresh water from a fresh water connection, wherein the fresh water connection has an outlet opening, is characterized in that a fresh water container for temporarily storing the fresh water is provided downstream of the fresh water connection in the flow direction of the fresh water, which fresh water container is connected to the fresh water connection.In an advantageous further development, it is provided that one or more hydraulic jumps exist downstream of the fresh water connection in the flow direction of the fresh water. Such jumps build up a cascade for water supply, by means of which a transfer of the grey water to the fresh water connection can be prevented particularly effectively. Advantageously, vertical offsets of the fresh water flow exist in the jumps.In an advantageous development, it is provided that the fresh water connection is a drinking water connection. Then, a sufficient fill level in the grey water container can always be established very easily, even if not sufficient grey water is available.In an advantageous further development, it is provided that the fresh water container is arranged between the fresh water connection and the grey water container. This makes it possible to integrate the device easily into grey water usage systems.In an advantageous development, it is provided that the fresh water container has a treatment agent (for example a treatment and / or cleaning agent) for the fresh water, which is preferably arranged in a corresponding receptacle which is accessible for the fresh water stored in the fresh water container. In particular, the receptacle should be arranged at least partially below a maximum fill level in the fresh water container. The fresh water can then be pretreated before transfer to the grey water container, which is more effective here than in the grey water container because the grey water would also be treated there.In an advantageous further development, it is provided that a wall is provided which prevents fresh water from being able to pass from the fresh water connection into the grey water container, bypassing the fresh water container. This prevents fresh water from unintentionally entering the grey water container during normal operation of the device. This makes it possible to ensure that the available grey water is always introduced into the grey water container first and fresh water is supplied to the grey water container only if there is not sufficient grey water available.In an advantageous development, it is provided that the grey water container and the fresh water container are connected to one another, preferably are arranged in a common housing. A grey water utilization device can then be constructed in a particularly compact manner. The connection can be direct, but it can also be indirect or indirect with the interposition of one or more line or storage elements for the fresh water.In an advantageous development, it is provided that the fresh water container and the grey water container have separate container walls which are arranged at least in regions spaced apart from one another, wherein there is preferably an air gap between the container walls. As a result, the fresh water is separated from the grey water by a double wall, whereby the grey water transfer is effectively prevented even if the grey water creeps into the fresh water container.In an advantageous development, it is provided that the fresh water container has a volume in the range from 10 ml to 300 ml, preferably in the range from 40 ml to 100 ml, in particular in the range from 60 ml to 80 ml, with respect to a maximum fill level of the fresh water. Then, a sufficient amount of fresh water is provided without too much fresh water being wasted or having to be processed.In an advantageous development, it is provided that the grey water container is intended for flushing a sanitary object, preferably a toilet, a urinal or the like. The grey water can then be used further particularly well.In an advantageous development, it is provided that the fresh water container has a free water surface of at least 5 cm2to 150 cm2, preferably of at least 10 cm2to 80 cm2and in particular of at least 15 cm2to 30 cm2. The evaporation of the fresh water is then carried, which has the advantage that a sequential filling of the fresh water container and subsequently of the grey water container takes place. This is particularly desirable when a purely hydro-mechanical functional concept exists, in which, for example, the transfer of water from one container to another is controlled via float valves and or non-return flaps. A fill level in the fresh water container lowered by evaporation functions as an additional delay element in the control mechanism.In an advantageous development, it is provided that the outlet opening points vertically downwards onto a water surface in the fresh water container, wherein the outlet opening is preferably arranged on an outlet bend, wherein the outlet bend is in particular an outlet bend bent through 90° in a vertical plane. There is then a particularly reliable separation of the fresh water connection and the fresh water container. In addition, the least possible noise-free filling of the fresh water into the fresh water container is made possible.In an advantageous development, it is provided that the outlet opening is arranged at least 5 mm, preferably at least 10 mm, in particular at least 20 mm above a maximum fill level height of the fresh water container. As a result, there can be a corresponding gradient for the fresh water in the fresh water container without the latter coming into contact with the fresh water connection, i.e. the fresh water can be accumulated accordingly in the fresh water container. There is then also a particularly reliable separation of the fresh water connection (category 1) and the fresh water container (category 3).In an advantageous development, it is provided that the fresh water container has a drain with a vertically upper drain edge and a vertically lower break-off edge, wherein the fresh water can be supplied to the grey water container via the drain. The run-off edge can be identical to the tear-off edge, but this is preferably not. There is then a particularly defined supply line of the fresh water into the grey water container.In an advantageous development, it is provided that the run-off edge is preferably arranged at least 5 mm, preferably at least 10 mm, further preferably at least 20 mm, in particular at least 29 mm below the run-off opening. As a result, there can be a corresponding gradient for the fresh water in the fresh water container without the latter coming into contact with the fresh water connection, i.e. the fresh water can be accumulated accordingly in the fresh water container. This results in a particularly reliable separation of the fresh water connection (category 1) and the fresh water container (category 3).In an advantageous further development, it is provided that the break-off edge is located at a distance vertically above a maximum fill level of the grey water container of at least 5 mm, preferably at least 10 mm, in particular at least 20 mm. As a result, there is a particularly reliable separation of the fresh water container (category 3) and the grey water container (category 5) and thus also of the fresh water connection (category 1) and the grey water container (category 5).In an advantageous development, it is provided that the run-off edge is located at a distance vertically above a maximum fill level height of the grey water container of at least 5 mm, preferably at least 10 mm, in particular at least 20 mm. This results in a particularly reliable separation of the fresh water container (category 3) and the grey water container (category 5) and thus ultimately also of the fresh water connection (category 1) and the grey water container (category 5).In an advantageous development, it is provided that a run-off surface is arranged between run-off edge and break-off edge. This reduces the noise generation. In addition, the outlet is laminarized and the inflow takes place in a targeted manner, whereby foaming in the grey water container can be reduced.If the run-off surface has a vertical length in the range from 1 cm to 10 cm, preferably in the range from 3 cm to 7 cm and in particular of 5 cm, then it is particularly effective.If the run-off surface has a horizontal width in the range from 1 cm to 7 cm, preferably in the range from 2 cm to 5 cm and in particular of 3 cm, then it is particularly effective.If the run-off surface has an inclination with respect to the horizontal in the range 2° to 80°, preferably in the range 4° to 60°, more preferably in the range 6° to 40° and in particular 10°, then it is particularly effective. In addition, due to this inclination, the inflow through the outlet opening and thus also through a filling valve is safely discharged without causing a significant back pressure.If the outlet surface is designed such that it deflects the flow in the outlet in the direction of the fresh water container, then the fresh water can be supplied to the gray water container close to or on a wall of the gray water container. This reduces the noise generation. In addition, the outlet is laminarized and the inflow takes place in a targeted manner, whereby foaming in the grey water container can be reduced. Furthermore, the fresh water inflow can be diverted away from further functional components in the grey water container, in particular an outflow valve, so that its calcification is reduced or prevented.In an advantageous development, it is provided that the outlet surface and / or the outlet edge and / or the separation edge is arranged between a receiving volume of the fresh water container for the fresh water and a discharge surface. This provides splash protection for the fresh water. As a result, on the one hand, the impingement of fresh water on further functional components in the grey water container, in particular a drain valve of the grey water container, can be prevented, so that its calcification is reduced or prevented. In addition, noise generation is reduced.If the baffle extends vertically, it is particularly effective. The deflection surface does not have to extend exactly vertically; it can also be inclined or bent.If the deflection surface has a vertical length in the range from 0.5 cm to 5 cm, preferably in the range from 1 cm to 3 cm, in particular of 2 cm, then it is particularly effective.If the deflection surface has a horizontal width in the range from 1 cm to 10 cm, preferably in the range from 2 cm to 7 cm, in particular of 5 cm, then it is particularly effective.If the discharge surface is part of a discharge channel, a particularly effective spray protection exists.In an advantageous development, it is provided that a passage area of the outlet of the fresh water container is the same size or larger than a passage area of the outlet opening. Then, a build-up of fresh water in the fresh water container is prevented.In an advantageous development, provision is made for there to be an overflow for protecting the outflow against blockage. This results in a more reliable separation of the fresh water container (category 3) from the fresh water connection (category 1) even in the case where the outlet is blocked, because the fresh water is then discharged from the fresh water container via the overflow before reaching the fresh water connection.If the overflow has an overflow edge which is arranged at least 5 mm, preferably at least 10 mm, further preferably at least 20 mm, in particular at least 23 mm below the outlet opening, then there is a particularly reliable separation between the fresh water container (category 3) and the fresh water connection (category 1).If the overflow opens into the grey water container, then no fresh water is lost unused.In an advantageous development, it is provided that the overflow edge is arranged on the discharge surface, preferably as the upper end of the discharge surface. The device is then of particularly compact construction.In an advantageous further development, it is provided that for opening the fresh water connection, an actuating means, preferably in the form of a float valve or a solenoid valve with a fill level sensor, wherein the float valve or the fill level sensor are in contact with the fill level of the grey water container. The fresh water supply to the grey water container can then be controlled particularly well. If the actuating means has delay means, it can be ensured that the grey water container is filled with fresh water only when grey water is no longer available. Preferably, the delay means should bring about a time delay between a drop in the fill level in the grey water container (for example as a result of grey water use) and the supply of fresh water into the fresh water container in the range from 0 s to 30 s, preferably from 5 s to 20 s, in particular from 15 s.In an advantageous development, it is provided that the delay means comprise a container in which a control bore exists, wherein the container preferably has a non-return flap which blocks the inflow of liquid into the container through the control bore. The delay means can then be implemented particularly easily for a float valve. If the container has a cover in order to prevent direct penetration of fresh water from the fresh water container, the delaying means are very precise and only dependent on the fill level in the grey water container.In an advantageous development, it is provided that the delay time of the delay means is greater than the time required for producing a desired level of grey water in the grey water container. Only very little fresh water is then required and the second container can be filled up primarily by the grey water.In an advantageous development, it is provided that the container has an inlet edge which is lower than a maximum fill level height of the grey water container. Then the effect of the delay means is optimized.In an advantageous development, it is provided that the floating body of the float valve is arranged in the container. The effect of the delay means is also then optimized.In the indicated value ranges, not only the indicated individual values and limit values, but also all intermediate values lying between indicated values are conceivable and relevant. This means that all values lying between the individual values, minimum and maximum values indicated in each case can likewise be present and are essential to the invention. Any intermediate value between the individual values, minimum and maximum values of the respective interval indicated in each case is thus disclosed as being essential to the invention, in particular in respective stages of 0.1 units (for example 0.1 mm, 0.1 cm, 0.1° and 0.1 s). Such an intermediate value may not be within a specified interval, and may be between the boundary of one interval and the boundary of another interval, the boundary of one interval and one singular value, and two singular values as long as the values each refer to the same element.The claims now filed with the application and also the claims later filed are not prejudicative of achieving further protection.If it is found here, upon closer examination, in particular also of the relevant prior art, that one or the other feature is favourable for the object of the invention, but is not of decisive importance, then a formulation is naturally already desired which no longer has such a feature, in particular in the main claim. Such a sub-combination is thus also covered by the disclosure of this application.The relations recited in the dependent claims indicate the further embodiment of the subject matter of the main claim by the features of the respective dependent claim. However, these should not be understood as a omission of achieving independent, objective protection for the features of the dependent claims which refer back.It should be further noted that the embodiments and variants of the invention described in the various embodiments and shown in the figures can be combined with one another as desired. Individual or several features can be exchanged with one another as desired. These combinations of features are also disclosed.Features which have been disclosed only in the description or even individual features from claims which comprise a plurality of features can be adopted at any time as being of importance essential to the invention for delimiting from the prior art in the independent claim / claims, and indeed even if such features have been mentioned in connection with other features or achieve particularly favorable results in connection with other features.Thus, all features shown in the general description of the invention, the description of the exemplary embodiments, the following claims and in the figures can be essential to the invention both individually and in any combination with one another. These features or combinations of features can each be a separate invention, the use of which is expressly reserved. In this case, individual features from the description of an exemplary embodiment do not necessarily have to be combined with one or more or all other features specified in the description of this exemplary embodiment; in this respect, each sub-combination is expressly also disclosed. In addition, physical features of an apparatus, a device or a system can be used in a formulated manner as method features and method features can be used in a formulated manner as physical features of an apparatus, a device or a system. Such reformulation is thus automatically disclosed.The features and further advantages of the present invention will become apparent below on the basis of the description of a preferred exemplary embodiment in conjunction with the figures. Purely schematically show: FIG. 1 a shows an overall view of the system according to the invention for gray water use with the device according to the invention for gray water storage, the device according to the invention for gray water supply and the device according to the invention for fresh water supply, FIG. 1 bis a partially sectioned overall view of the system for gray water use according to FIG. 1 a, FIG. 2 is an exploded view of the gray water use system of FIG. 1a, FIG. 3 shows a first detailed view of the device according to the invention for gray water storage, FIG. 4 shows a second detailed view of the device for storing grey water according to FIG. 3, FIG. 5 shows a third detailed view of the device for storing grey water according to FIG. 3, FIG. 6 shows a fourth detailed view of the device for storing grey water according to FIG. 3, FIG. 7 shows a fifth detailed view of the device for storing grey water according to FIG. 3, FIG. 8 shows a sixth detailed view of the device for storing grey water according to FIG. 3, FIG. 9 is a plan view in detail of the gray water storage device according to FIG. 3 , FIG. 10 shows a first section through the device for storing grey water according to FIG. 3, FIG. 11 shows a second section through the device for storing grey water according to FIG. 3, FIG. 12a is a top view of the tank housing of the device for storing grey water according to FIG. 3, FIG. 12 bshows a first section through the tank housing according to FIG. 12 a, FIG. 12 cshows a second section through the tank housing according to FIG. 12 a, FIG. 13a is a top view of the first container of the device for storing grey water according to FIG. 3, FIG. 13 bshows a first section through the first container according to FIG. 13 a, FIG. 13 cshows a second section through the first container according to FIG. 13 a, FIG. 14 is a side view of the third container of the gray water use system of FIG. 1a, FIG. 15 is a plan view of the third container of FIG. 14, FIG. 16 is a top view of the fresh water supply device according to the invention of the system for gray water use according to FIG. 1 a, FIG. 17 is a perspective partial view of the device for supplying fresh water according to FIG. 16, FIG. 18 is a perspective side view of the device for supplying fresh water according to FIG. 16, FIG. 19 shows a first detail view of the device for supplying fresh water according to FIG. 16, FIG. 20 shows a second detailed view of the device for supplying fresh water according to FIG. 16, FIG. 21 shows a detailed view of the device for storing grey water according to FIG. 3, FIG. 22 is a sectional view of the gray water supply line of the gray water use system of FIG. 1a, FIG. 23 shows the device for supplying grey water according to FIG. 22 in a perspective partial sectional view with a first functional illustration, FIG. 24 shows the device for supplying grey water according to FIG. 22 in a perspective partial sectional view with a second functional illustration, FIG. 25 shows the device for supplying grey water according to FIG. 22 in a perspective partial sectional view with a third functional illustration, FIG. 26 shows the coupling between the device for supplying grey water according to FIG. 22 and the device for storing grey water according to FIG. 3 in a sectional view, FIG. 27 shows the device for supplying grey water according to FIG. 22 in a sectional view, and FIGS. 28 a, b show a time flow diagram for a) a system for gray water use according to the prior art in comparison with b) of the system for gray water use according to the invention according to FIG. 1 a.Referring now to Figures 1a through 27 and 28b, gray water usage system 700 according to a preferred embodiment of the present invention is shown in various views.This system 700 for gray water use comprises, by way of example, a gray water generator 12 in the form of a wash basin and a gray water collector 702 in the form of a toilet, the device 10 according to the invention for supplying gray water ("device for supplying gray water") from the gray water generator 12 to the device for gray water storage 500 according to the invention ("device for storing gray water", also referred to as "tank arrangement"), the device 300 according to the invention for supplying a gray water container with fresh water from a fresh water connection ("device for supplying fresh water") and the device 500 according to the invention for storing gray water.Referring now to FIGS. 1 a, 1 band 2, gray water usage system 700 is shown in overall views.It will be appreciated that the gray water use system 700 includes a front wall installation 704 to which both the washbasin 12 and the toilet 702 are secured by the sub-frame 706.The auxiliary frame 706 has a facing 708, the toilet 702 comprises a cover 710 and the device 500 for gray water storage is surrounded by a shell 712.Part of the cladding 708 is a cover 714 in the region of the jacket 712 and a cover 716 in the region of the toilet 702.On the front wall installation 704, the fresh water inlet 718 for the washbasin 12 is arranged in the usual manner, which fresh water inlet can be regulated by means of a corresponding fitting 720. Furthermore, there is an outlet 722 for the grey water coming from the washbasin 12 at the front wall installation 704, which outlet is not used further in the system 700 for grey water use. Finally, a fresh water feed (not shown) is arranged on the front wall installation, which is connected on the one hand to the fitting 720 and on the other hand to the device 300 for fresh water feed, and an outlet 724 for the toilet 702.The gray water storage device 500 has a flushing bow 502 which is connected to the flushing supply (not shown) of the toilet 702. The cover 714 has a central aperture 717 for passing through this scavenging bend 502.The gray water storage device 500 of the invention is shown in more detail in various views in FIGS. 3 to 21 and 26 and 27. In this case, FIG. 12 bshows the section in the vertical plane A-A according to FIG. 12 a, FIG. 12 cshows the section in the vertical plane B-B according to FIG. 12 a, FIG. 13 bshows the section in the vertical plane C-C according to FIG. 13 a, and FIG. 13 cshows the section in the vertical plane D-D according to FIG. 13 a. For the sake of better clarity, not all elements of the device 500 for gray water storage are shown in FIG. 9.It can be seen that the device 500 for storing grey water has a housing 504, in which a first insert 506 and a second insert 508 in the form of the device 300 according to the invention for supplying fresh water are arranged.The housing 504 has supports 510, on which the inserts 506, 508 can be placed and screwed through corresponding openings 512 which are arranged on projections 514 of the inserts 506, 508 (cf. FIG. 8 ).The inserts 506, 508 are dimensioned such that there is no other contact between the inserts 506, 508 and the housing 504 or the inserts 506, 508 with one another at the upper portions of the housing 504 and the inserts 506, 508 with respect to the vertical V, except at the transition between supports 510 and projections 514. Instead, both with respect to the vertical V and also with respect to the horizontal H, there is a spacing 515 in each case which is formed as an air gap.Liquid which is located in the first insert 506 and the vertical wall 516 of which creeps up on the inside is therefore deflected at the upper edge 518 and creeps down again on the outside at the wall 516, from where it reaches the inner side of the base 520 of the housing 504 and thus into the housing 504.Liquid located in the housing 504 cannot reach the fresh water container 304 due to the spacing 515 of the second insert 508 from the inside of the vertical wall 522 of the housing 504.This effectively prevents gray water from overflowing into the fresh water container 304 as a result of creep.In the region of the second insert 508, the housing 504 has a lateral recess 526, as a result of which a large part of the second insert 508 is located outside the vertical wall 522 of the housing 504.Furthermore, the housing 504 has feet 528, which end at the bottom in support points 530, for example in the form of pins, which have openings 532. This allows the housing 504 to be fixed to the cover 714.As best seen in Figures 12b and 12c, the housing has a central overflow 534 which has an upper overflow edge 536, an overflow tube 538 and an overflow port 540. The overflow connection 540 is connected in the usual manner to the outlet 722 by the recess 717.The housing 504 has a depression 542, at the lowest point of which there is an opening 544, in which a flushing valve 546 with an overflow 548 is arranged, which flushing valve is known to the person skilled in the art. This purge valve 546 is not shown in FIGS. 9-11 for clarity and is not fully shown in FIGS. 7 and 8.The housing 504 has at its bottom 520 two channels 550, 552 which open at the top and open laterally into the depression 542. Starting from the first channel 550, a vertically rising wall 554 adjoins within the depression, which wall, together with the inner bottom surface 556 and the inner side surface 558, forms a grey water guide channel 560, which extends around the flushing valve 546 at an azimuthal angle in the range between 60° and 360°, in this case specifically approximately 180°, as can best be seen in FIG. 21. The wall 554 could be configured to be telescopic in order to be able to set the delay time (not shown).This grey water guide channel 560 is shown only in FIG. 21 for the sake of clarity.The direct inflow of liquid from the two channels 550, 552 to the base valve 546 is thus prevented in the region of the grey water guide channel 560 and the liquid can therefore flow directly to the flushing valve 546 only after passing through the grey water guide channel 560 and reaching the inflow region 562.It can also be seen that the inner side surface 558 has a bulge 563 in the region of the washer fluid 502 which, together with the wall 554, causes a constriction 564 in the grey water guide channel.The first insert 506 forms a first container ("temporary storage container") of the device 500. In addition to its outer wall 516, it also has an inner wall 566 which together with a wall section 516 aof the outer wall 516 forms a first region 568 of the first container 506 around the overflow 534.This first region 568 is bounded at its underside by the bottom 570 of the insert 506. The bottom 570 has an opening 572 through which the overflow 534 is guided, wherein a seal, not shown, in the form of a sealing ring can exist between the overflow pipe 538 and the opening 572, so that no liquid can pass out of the first region 568, down the overflow pipe 538 into the housing 504.The upper edge of the inner wall 566, which upper edge is configured as an overflow edge 574, has such a vertical height above the bottom 570 that a liquid volume of 1.5 L to 2 L can be captured in the first region 568 before the liquid located in the first region 568 passes via the overflow edge 574 into the second region 576, which is formed between the inner wall 566 and the wall section 516 bin conjunction with the bottom 570.The volume of 1.5 L to 2 L covered in the first region 568 corresponds to the amount of liquid according to experience, which arises in the washbasin 12 in the case of an average hand wash.The wall sections 516 a, 516 bextend with their upper edge 518 2 cm to 10 cm vertically beyond the overflow edge 536 (cf. FIGS. 10, 11 ) and the overflow edge 536 extends 1 cm to 5 cm vertically beyond the inner wall 566.As a result, liquid which is supplied to the first region 568 by the device 10 for supplying grey water will first fill this first region 568 completely before the liquid located in the first region 568 passes over the overflow edge 574 into the second region 576 of the first container 506. The outflow of liquid into the overflow 534 will only occur if the liquid level in the first container 506 is higher than the overflow edge 536.Both in the first region 568 and in the second region 576 are openings 578, 580 (see FIGS. 9 and 13 ) that are arranged above the channels 550 and 552, respectively (see FIG. 9 ). In the openings 578, 580 check valves 582, 584 are arranged, which keep the openings 578, 580 open in the direction of the channels 550, 552, but block from the channels 550, 552 into the areas 568 and 576, respectively.In the region of the depression 542, a volume forming the second container ("wash container") 586 is delimited by the vertical wall 522 of the housing 504, the wall section 516 aand the bottom surface 556 of the depression 542.A seal (not shown) may exist between the bottom 570 of the insert 506 and the bottom 520 of the housing 504, which ensures that grey water can be supplied to the depression 542 and thus to the second container 586 only from the openings 578, 580 via the channels 550, 552.The openings 578, 580 together with the check valves 582, 584, the channels 550, 552 and the grey water guiding channel 560 form the interface for the fluid communication of the first container 506 with the second container 586.The bottom 570a in the first region 568 is 4 cm to 8 cm deeper than the bottom 570b in the second region 576 and the bottom 570a is 4 cm to 8 cm higher than the recess 542.In addition, the vertical height of the first region 568 is relatively high 10 cm to 20 cm compared to the representative circle-equivalent diameter for the volume of the first container 506 of 1.5 L to 2 L, such that there is a sufficiently high gravity pressure for the liquid located in the first region 568 to pass into the second container 586 having the depression 542.The delimitation of the first region 568 from the second region 576 ensures a steady filling of the second container 586 with a maximum amount of grey water, because grey water is reliably transferred from the first region 568 into the second container 586 even in the case of a low level of grey water present in the first container 506.The second region 576 holds a quantity of fluid of 2.7 L, whereby the first container 506 has a total volume of 4.5 L. The second container 586 likewise holds an amount of 4.5 L. If the first container were to be formed larger, then a plurality of fills of the second container 586 would also be possible.The grey water is easily filled into the second container 586 up to a maximum fill level with grey water, which is defined by the vertical position of the overflow edge 536, by the further elevated position of the second region 576 above the bottom surface 556 of the second container 586. If no grey water from the wash basin 12 just drains, then a correspondingly lower fill level in the second container 586 is naturally obtained by a drop in the grey water level in the first container 506.The maximum level of fill in the second reservoir 586 is defined by the vertical location of the overflow edge 588 of the overflow 548 in the purge valve 546. This vertical position is about 4 cm higher than the vertical position of the overflow edge 536 of the central overflow 534, as a result of which it is ensured that even in the case of a high grey water volume at the washbasin 12, the excess grey water always flows off via the central overflow 534 and not through the flush sheet 502 into the toilet 702, which can lead to contamination of the toilet.In FIG. 22, the device 10 according to the invention for supplying grey water from a grey water generator to a grey water collector of the system 700 for grey water use is shown in a sectional view, wherein in the case of the system 700 for grey water use according to the invention the "grey water collector" is the first container 506 of the device 500 according to the invention for grey water storage, wherein the device 500 in turn feeds the further grey water collector in the form of the toilet 702.Operating elements 590 are provided for operating the flushing valve 546 of the device 500.It can be seen that there is a drain 18 in the gray water supply device 10, which drain is coupled to the central overflow pipe 538 within the scope of the gray water use system 700.More specifically, the drain 18 is positioned over and thereby coupled to the overflow pipe 538 (see FIG. 26 ). As a result, the vertical collar 49 adjoining the ring segment-shaped discharge surface 48 of the discharge connection 20 extends all around the overflow edge 536 of the central overflow 534.However, both the collar 49, the discharge funnel 26 and the outlet 18 are at a distance from the overflow edge 536 in the horizontal direction H and in the vertical direction V, so that the discharge of grey water from the first container 506 into the central overflow 534 is ensured by the overflow channel 726 formed in this way. More specifically, the distance of the drain 18 from the overflow edge 536 is laterally about 10 mm and vertically about 7 mm, while the distance of the collar 49 from the overflow edge 536 is laterally about 22 mm and vertically about 17 mm.It can also be seen in FIG. 26 that the discharge surface 48 will introduce the grey water emerging via it, which has been physically and chemically / biologically processed and discharged from the wash basin 12, directly into the first region 568.In contrast, all grey water from the washbasin 12 that has not been discharged (grey water that overflows into the drain 18 as part of a blockage or grey water that is conducted into the drain 18 as part of a cleaning or maintenance) is supplied to the outlet 722 via the overflow pipe 538.In this way, the first region 568 will thus first be filled with grey water. The outflow of liquid from the second region 576 and thus also from the first region 568 will take place via the overflow pipe 534. When the first region 568 is completely filled with grey water, the grey water is transferred via the inner wall 566 into the second region 576 and completely fills the latter. In this case, excess grey water will pass into the overflow 534 on account of the higher vertical level of the overflow edge 536 with respect to the inner wall 566 only if the liquid level in the second container 586 is higher than the overflow edge 536.If, on the other hand, the second container 586 is empty, the grey water located in the first region 568 and, if appropriate, in the second region 576 is transferred directly into the second container 586 via the channels 550, 552.Only in the case that the desired fill level, which is below the overflow edge 588 of the overflow 548, cannot be reached in the second container 586 by the grey water located in the first container 506, is fresh water supplied to the second container 586 from the device 300 according to the invention for supplying fresh water.For this purpose, there is an actuating means 308 in the form of a float valve which is in contact with the fill level of the second container 586 at the fresh water connection 302, wherein the actuating means 308 also has a delay circuit 364, 366 in the form of a container 364 having a control bore 366, wherein the float 362 of the actuating means 308 is located in the container 364.More specifically, the actuator 308 comprises, as a float valve, in the usual manner a valve 358 coupled via a lever mechanism 360 to the float 362 located in the second container 586.If the floating body 362 has dropped to a predetermined level in the second container 586, then the valve 358 is opened and fresh water is supplied, coming from the fresh water connection 302, through the outlet opening 316 to the third container ("fresh water container") 304, from where it is discharged via the outlet 306, namely after exceeding the fill level height via the outlet edge 326, the outlet surface 342 and the outlet chute 340, through the outlet opening formed by the aperture 348 and the recess 350, into the second container 386.The container 364 is designed as a trough which is open towards the top. This trough 364 has the control bore 366, in which a vertically movable non-return flap 368 is located, which blocks the inflow of liquid into the container 364 through the control bore 366. Various inserts (not shown) could be inserted into the control bore 366 to adjust the diameter of the control bore 366 and thereby adjust the elapsed time.The floating body 362 is designed as a trough which is open toward the bottom. It is arranged in the container 364 and at the same time is mounted displaceably on a vertically extending post 370 of the actuating means 308.An inlet edge 372 surrounding the top of the container 364 is disposed at a level which is below the maximum fill level of the second container 586, which is defined by the overflow 548 of the flushing valve 346 of the second container 586.As a result, the grey water located in the second container 586 flows into the container 364 only when the level of the filling edge 372 is exceeded by the latter. The inflow through the control bore 366 is, on the other hand, prevented by the non-return flap 368.As a result, the container 364 can only be filled from above and the filling by fresh water from the fresh water container 304 is prevented by a cover cap 374 which completely shields the upper opening 376 of the container 364.The speed of the outflow of grey water from the container 364 is predetermined by the control bore 366, which has been dimensioned such that a time period of 15 s exists between a raised position of the floating body 362, which switches off the valve 358, and a position of the floating body 362, which is lowered to such an extent in the container 364 that the valve 358 is opened.More specifically, during operation, when the second container 386 is fully filled and the purge valve 346 of the second container 386 is actuated, the second container 386 will empty, whereby the fill level in the second container 386 decreases successively.By contrast, the control opening 366 prevents the quick discharge of grey water from the container 364, as a result of which it flows out of the container 364 only slowly and therefore the floating body 362 falls less quickly than the fill level in the second container 386 falls. In this way, a time of 15 s will elapse between the complete emptying of the second container 386 and the switching of the valve 358.As a result, during operation of the gray water use system 700, there is sufficient time for supplying gray water to the second container 586 before fresh water is supplied to the second container 386. If gray water is sufficiently present from the wash basin 12, this gray water is thus always transferred first into the second container 386, so that optimum use of the gray water produced and at the same time maximum saving of fresh water can take place.If, on the other hand, the grey water is returned to the second container 386, the floating body 362 remains in its lowered switching position until the grey water passes over the inlet edge 372.As a result, the second container 386 is filled with fresh water at a maximum and constant speed. After the gray water has passed into the container 364, the floating body 362 is raised very quickly because of the small volume of the container 364. As a result, the time period between complete opening of the valve 358 and closing of the valve 358 is shortened to the maximum, whereby the process of filling the second container 386 with fresh water is not only minimized, but also the noise generation associated therewith is significantly reduced.Overall, within the scope of the system 700 according to the invention for gray water use, the device 500 according to the invention for gray water storage in conjunction with the second delay means 364, 366 thus has the effect that, in the case of refilling the second container 586 after a flushing process, firstly a maximum amount of gray water is transferred from the first container 506 into the second container 586 before subsequently optionally a fresh water supply takes place.During the flushing process itself, the first delay means 560 prevent grey water from the first container 506 from passing too early into the second container 586 during the flushing process and from being flushed away there. Instead, gray water entering the second reservoir 586 from the first reservoir 506 is correspondingly retained in the gray water guide channel 560 and does not reach the opening 544 in appreciable amounts. The constriction 564 brings about an almost complete holding of the grey water, wherein the grey water channel 560 can nevertheless be emptied at the same time during the flushing process. Alternatively, the wall 554 can also bear directly against the bulge 563 and thus bring about a closure of the grey water guide channel 560, wherein a residual quantity would then remain in the grey water guide channel 560 during the flushing process. Overall, this makes very efficient use of the grey water and ensures a constant quantity of rinsing liquid during a rinsing process.The delay means 364, 366, 560, which do not act electrically but rather automatically, do not allow an absolute transition-free circuit, but these delay means 364, 366, 560 are nevertheless very effective. Moreover, they do not require the use of electrical energy. Alternatively, however, suitable electrically actuated functional parts can also be used, which are actuated by a delay means embodied as an electrical circuit. Thus, adjustments can be easily implemented and more accurate control of the deceleration is possible.Within the scope of the preferred embodiment, this adaptation is possible in that the control bore 366 is varied in size by different inserts (not shown) and the length of the grey water guide channel 560 is varied by a telescopic wall 554 (not shown).Cascade balancing of fresh water supply over various vertical levels which are physically separated from each other, namely the discharge port 316, the maximum level in the third reservoir 304, and the maximum level below in the second reservoir 386 effectively prevents contamination of the previous stage upstream. As a result, neither grey water can pass from the second container 586 into the third container 304, nor fresh water can pass from the third container 304 into the outlet opening 316, as a result of which, of course, the transfer of grey water from the second container 386 into the outlet opening 316 is also prevented.Since, as already described above, the creeping transition of grey water between the first container 506 or the second container 586 into the third container 304 is also prevented and such a creeping transition is also not possible to the outlet arch 310, the entire system 700 for grey water use is thus very effectively protected against contamination of the fresh water in the fresh water connection 302 by grey water located in the system 700 for grey water use.FIG. 22 shows the device 10 according to the invention for supplying grey water in detail. It can be seen that the device is a drain 10 which can be fastened to a wash basin 12, bathtub or the like as a grey water generator which has a grey water drain 14.The device 10 for supplying grey water itself has an inflow 16, an outflow 18 and discharge connection 20, which are arranged on a housing 22.In this case, within the scope of the housing 22, there are a discharge housing 24 with a discharge funnel 26, a fastening flange 28, an overflow housing 30, a filter housing 32, a treatment housing 34 and a valve housing 36, which is part of the discharge housing 24.The fastening flange 28 can be screwed into the outlet housing 24 via a screw connection 38. The outlet housing 24 has an upper circumferential collar 40 in the vertical direction V, on which an annular elastic sealing element 42 is arranged, which provides the fluid-tight seal between the outlet housing 24 and the grey water generator 12. For further sealing, a corresponding sealing ring could also be present between the fastening flange 28 and the grey water generator 12 (not shown).The outlet housing 24 has an annular chamber 44 which is closed vertically downwards and opens downwards into a respective overflow channel 46 on two sides opposite with respect to the longitudinal axis L, wherein the two overflow channels 46 open into the outlet funnel 26 next to the valve housing 36. (For clarity, an overflow passage 46 is shown on the right in FIG. 22, and the annular space 44 is shown on the left, the central line being a virtual section line.)At the locations where no overflow channel 46 leads from the annular space 44, the discharge connection 20 is located below the annular space 44, which correspondingly has a ring segment-shaped discharge surface 48, from which grey water can be discharged to a grey water collector, such as a toilet 702, a grey water tank 500, or the like. This discharge surface 48 ends in a collar 49 which extends axially and almost perpendicularly with respect to the longitudinal axis L.There are thus two overflow channels 46 and two discharge connections 20 which are arranged symmetrically about the longitudinal axis L and each extend by an azimuthal range of 90° with respect to the longitudinal axis L.Alternatively, for example, for a front wall installation, it could also be provided that there is only one overflow channel 46 and one discharge connection 20, which are arranged offset by 180° and each comprise an azimuthal angle range of 180°. The sectional plane between overflow channel 46 and discharge connection 20 would then be oriented parallel to a surface normal of the front wall.The fastening flange 28 has an inner projection 50, on which a collar 52 of the overflow housing 30 running circumferentially on the edge rests. The overflow housing 30 also has at its lower portion a groove 54 in which an elastic sealing ring 56 is arranged. Together with an inner wall 58 of the outlet housing 24, a seal is thus effected between the overflow housing 30 and the outlet housing 24.Between the overflow housing 30 and the drain housing 24 there could be a locking means (not shown), in which, for example, a bayonet locking means exists in the region of the collar 52.On the other hand, an alignment securing means, for example in the form of vertically extending projections of one element, which engage in reversely vertically extending cut-outs of the other element, could also be present between the overflow housing 30 and the outflow housing 24 (not shown). Such an alignment would be useful, for example, if a washing machine connection (not shown) is provided through the drain housing 24 into the overflow housing 30.More specifically, in the case of a combination of a conventional wash basin outlet with a connection for discharging grey water from a washing machine, the inlet would be correspondingly remodeled and provided with a connection device (hose connection piece or the like). This connection device would preferably be arranged below the inflow 16 and above the further functional elements (means for physical and chemical / biological processing).The overflow housing 30 has in its upper region overflow openings 60 which extend with respect to the longitudinal axis L by an azimuthal angle range of 360° in four sections of 65° each, which are separated from one another by webs (not shown) of 25° each. The height of the overflow openings 60 is about 5 mm, but can be in the range from 2 mm to 20 mm. The total area of the overflow openings 60 defines the discharge rate at which a volume flow corresponding to the fitting must be discharged. In this case, 6 to 12 and more l / min are normal for tubs, showers and washing machines.In addition, the overflow housing 30 has in its lower region an annular space 62, which is designed as a dead space, i.e. without outflow downwards or to the side.The filter housing 32 has a central, cylindrical cage section 64, on which a filter fabric 66 is arranged, which forms the microscopic filter 68 of the device 10 for supplying grey water. The filter cloth 66 is, for example, a metal mesh, a plastic mesh, a microporous structure, or a membrane, or the like.If a metal mesh 66 is involved, this could be provided with a special coating, as is known, for example, under the trade name AGXX ® from Heraeus Ready Metals GmbH & Co. KG, Germany. As a result, germs already present in the grey water could be killed here. The active principle is referred to as ROS ("reactive oxygen species") and describes the killing effect of free oxygen radicals on germs such as viruses, bacteria, fungi, yeasts and algae.At the upper end 70 of the cage section 64, there is a circumferential collar 72 which is supported on the collar 52 of the overflow housing 30. The upper end 70 of the cage section 64 is formed with an aperture 71 for receiving the treatment housing 34.Extending between the collar 72 and the upper end 70 of the cage portion 64 are struts 74 which, with the passages (not shown) therebetween, form part of the macroscopic filter 76 of the gray water supply device 10. These struts 74 extend radially with respect to the longitudinal axis L.The cage portion 64 widens conically at the upper end 70 for receiving the treatment housing 34.In a central region of the cage section 64 at the level of the dead space 62, the cage section 64 has a groove 78, in which an elastic sealing ring 80 extending along the circumferential direction about the longitudinal axis L is arranged.At its lower end, the cage section 64 has a deflection plate 87, on whose vertically downwardly extending collars 87a a groove 88 is arranged, in which an elastic sealing ring 90 is located.This sealing ring 90 acts against the wall 92 of the valve housing 36 in the inserted state of the filter housing 32 into the overflow housing 30, whereby a seal is provided, forming the valve 94.The deflecting plate 87 designed as a closed plate is thus part of the valve 94, and it is designed to be slightly convexly curved in order to be able to divert grey water more easily into the discharge channel 122.The treatment housing 34 also has a cage section 96. The upper end of the cage portion 96 is provided with a through hole so that a processing substance in the form of a stick (not shown) can be placed in the processing housing 34. Alternatively, however, the processing substance can be provided, for example, in tablet form, as granules or the like.The upper end 100 of the cage section 96 is formed as a collar which widens conically vertically upwards.The bottom 101 of the cage housing 96 is provided internally with upstanding ribs (not shown) to space the inserted stick from the bottom 101.The cage section 96 is covered by a cap 102 with handle 103 which has a conically downwardly tapering collar 104. This collar 104 is adapted on the one hand to the conical contour of the collar 100 and on the other hand to the conical contour of the upper end 70 of the filter housing 32.In addition, the cap 102 is made of an elastic material, for example a thermoplastic elastomer (TPE), so that it can be easily removed from the collar 100 or can be plugged onto it.As a result, when the preparation housing 34 is inserted into the filter housing 32, the preparation housing 34 is clamped at the upper end 70 of the filter housing 32, while the preparation housing 34, the cage section 96 of which tapers downward in the opposite direction to the cage section 64, is mounted in this cage section 64, wherein there is a positive connection, but the clamping is produced at the upper end 70. Overall, there are thus no flow resistances between the cage section 64 and the cage section 96, as a result of which the treatment housing 34 can also be inserted into the filter housing 32 in any desired orientation.Moreover, the gray water supply device 10 has a cover 106, which during operation of the gray water supply device 10 prevents the user of the gray water generator 12 from looking into the gray water outlet 14 and for this purpose has an aesthetically shaped panel 108. This diaphragm 108 can be formed, for example, from ceramic, enamel, plastic, metal, or the like.The cover 106 also has six supports 110 arranged uniformly around the longitudinal axis L, with which supports the cover can be placed freely on the collar 72. These supports 110 extend radially with respect to the longitudinal axis L. Between the supports 110 there is a passage through which grey water from the grey water generator 12 can be supplied to the device 10 for supplying grey water.This support 110 likewise provides macroscopic filtering, so that the covering is part of the macroscopic filter 76. In the case of a washing machine connection, however, this part of the macroscopic filter would be located before the washing machine connection.The macroscopic filtering 76 as the first filter stage and the microscopic filtering 68 as the second filter stage form the means for the physical treatment of the grey water. A particular feature of the present invention is that the flow through both filter stages 76, 68 is purely hydrostatically driven.The treatment housing 34 with the stick 98 forms the means for chemical and / or biological treatment of the grey water. If the filter fabric is provided with, for example, the AGXX ®- coating from Heraeus Precious Metals GmbH & Co. KG, Germany, the filter fabric 66 is also part of these means for the chemical and / or biological treatment of the grey water.Between the outlet housing 24 and the overflow housing 30 there is an annular chamber 114 which ends in the annular chamber 44 or the overflow channels 46.Between the overflow housing 30 and the filter housing 32 there is an annular space 116 which ends in the dead space 62.The drain housing 24 includes an upwardly extending annular barrier 120 which provides an S-shaped drain channel 122.It can also be seen that the dead space 62 is not an integral component of the overflow housing 30, but is designed to be openable with a removable inner wall 124.For emptying sedimented contaminants accumulated in this dead space 62, the overflow housing 30 can be completely removed from the outlet housing 24 and disassembled by removing the inner wall 124. Then, the dead space 62 can be cleaned while removing the sediments, and these sediments are disposed of via the usual house garbage.The collar 52, the inner wall 124 and the wall 92 thus form a guide for the filter housing 32 in the device 10 for supplying grey water, so that the filter housing 32 can easily be removed from the device 10 for supplying grey water, more precisely from the overflow housing 30, and added, wherein after the insertion the respective seals automatically adjust when the filter housing 32 is pressed with its collar 72 onto the collar 52 of the overflow housing 30.FIG. 23 shows the normal operation of the device 10 for supplying grey water, in which the outflow 18 is blocked with respect to the inflow 16 via the closed valve 94 and the grey water 160 is conducted from the inflow 16 to the outflow connection 20.FIG. 24 shows the overflow operation of the device 10 for supplying grey water, in which the outflow 18 is blocked from the inflow 16 via the closed valve 94, but the grey water 160 is diverted from the inflow 16 to the outflow 18 because of a blockage of the microscopic filter 68.FIG. 25 shows the cleaning or maintenance operation of the device 10 for supplying grey water, in which the cover 106 together with the filter housing 32 for cleaning or maintenance is removed from the device 10 for supplying grey water.The exact structure and the mode of operation of this device 10 for supplying grey water can be gathered from the applicant's commonly assigned utility model application DE 20 2025 101 371.1, filed on even date herewith, "Device for supplying grey water from a grey water generator to a grey water collector", the content of which in this respect is hereby incorporated in its entirety by reference.FIGS. 16 to 19 and 26 show the device 300 according to the invention for supplying fresh water, which is used, for example, within the scope of the system 700 according to the invention for gray water use, in various views according to a preferred embodiment.It can be seen that the device 300 according to the invention for supplying fresh water comprises a fresh water connection 302, a fresh water container 304 with an outlet 306 and an actuating means 308 for actuating the fresh water connection 302.More specifically, the fresh water connection 302 has an outlet bend 310 which has a section 312 running horizontally with respect to the horizontal H and a section 314 running vertically with respect to the vertical V, wherein an outlet opening 316 is located at the lower end of the vertical section 314.A pearlescent effect is produced by numerous perforations (not shown), whereby a noise reduction takes place during the supply of the fresh water discharged through the outlet opening 316, which will normally be drinking water.For easier cleanability of the outlet opening 316, the latter is designed to be removable from the vertical section 314, wherein a clip connection (not shown) is present here.In plan view (cf. FIG. 16 ), the fresh water container 304 has an approximately crescent-shaped bent shape in order to insert itself into the round outer shape of the tank arrangement 500, on the outer side of which it is arranged.The fresh water container 304 has a deeper part 322 in the region of the outlet opening 316, which is adjoined in the flow direction S by a shallower part 324, which is closed off by a run-off edge 326.The drain 306 extends adjacent to the drain edge 326, which has a side wall 328 as a splash guard and for guiding water, which side wall, with the exception of the drain edge 326, completely surrounds the drain 306. This side wall 328 connects directly to the side wall 329, which surrounds the rest of the fresh water container 304 in a circumferential manner and prevents the transfer of fresh water into other regions of the device 500 for gray water storage and the system 700 for gray water use, except by the outlet 306.This side wall 328 comprises a first vertical section 330 and a second vertical section 332, which run approximately parallel to one another. Opposite the trailing edge 326 is a diverting surface 334 which extends vertically and has an upper edge 338 which defines an overflow edge 338.Inside the outlet 306 there is an outlet blade 340, the edge 341 of which running round at the bottom forms the tear-off edge. This run-off blade 340 is connected to the section 332 of the side wall 328 and also to the discharge surface 334, but not to the section 330 and also not to the surface 342 adjoining the run-off edge 326, which is composed in a stepped manner of a first horizontally running part 344 adjoining directly to the run-off edge 326 and a second vertically running part 346 adjoining directly to the horizontal part 344.In addition, the section 330 has an aperture 348 and the outlet blade 340 has a recess 350, as seen from above, with respect to a cross section of the outlet 306 (cf. FIG. 16 ).As a result, a drain opening 348, 350 is formed by the aperture 348 and the recess 350, said drain opening being bounded by the vertical part 346, the drain blade 340 and the section 330.This outlet opening 348, 350 has a larger cross section than the outlet opening 316, whereby a build-up in the fresh water container 304 is effectively prevented.The drain blade 340, defining the drain surface, slopes downwardly from the portion 332 toward the portion 330. In addition, the run-off blade 340 has a downward gradient of 10° with respect to the horizontal H starting from the discharge surface 334 in the direction toward the part 346 or to the run-off edge 326. As a result, the water emerging from the outlet opening 352 is conducted in the direction of the aperture 348 and the recess 350, with the result that it is conducted overall in the direction of a wall section 351 of the grey water container 586 away from the actuating device 546 of the grey water container 586 (cf. FIG. 17 ). The inflow of fresh water, whether directly or by spraying to the actuating device 546, is thus effectively prevented, as a result of which its calcification is prevented (cf. FIG. 7 ).As shown in FIG. 26, the trailing edge 326 has a vertical distance d A with respect to the trailing opening 316, which is 29.8 mm greater than the vertical distance d U of 23.8 mm between the leading edge 338 and the trailing opening 316.Due to the transition between the deeper part 322 and the shallower part 324 and also due to the shallower part 324 itself, the fresh water container 304 has a relatively large water surface (phase boundary surface) with respect to the fill volume of the fresh water container 304 with respect to the maximum fill level defined by the run-off edge 326. More specifically, this water surface area is about 25 cm2and the volume is about 74 ml. As a result, the evaporation is conveyed in the fresh water container 304, which has the advantage that the fresh water container 304 and subsequently the grey water container 586 are filled sequentially. This is particularly desirable if a purely hydro-mechanical functional concept exists, in which, for example, the transfer of water from one container 304 into another 586 is controlled via float valves 308 and or non-return flaps. A fill level in the fresh water container 304 that is lowered by evaporation functions as an additional delay element in the control mechanism.During operation, the fresh water in the fresh water container 304 that is too much is always supplied to the outlet opening 352 via the outlet edge 326 and exits there. The distance d A of 29.8 mm between the outlet edge 326 and the outlet opening 316 ensures that a complete safeguard against a transfer of fresh water (category 3) from the fresh water container 304 into the fresh water connection 302 of fresh water (category 1) is present.However, even in the unlikely event that the outlet opening 348, 350 should be clogged once-which should be almost ruled out by its relatively large-area and irregular configuration during normal operation-the overflow edge 338 still exists, via which the fresh water (category 3) located too much in the fresh water container 304 would then emerge and be transferred directly into the grey water container 586.This overflow edge 338 too has a sufficiently large distance d U to the outlet opening 316 with 23.8 mm, so that the protection of the fresh water connection 302 is ensured in any case.The fresh water connection 302 has an external thread 354 in the usual form, to which a hose, not shown, of a fresh water feed line (for example from a drinking water feed line of a household) can be connected. For better feeding of the hose to the fresh water connection and also as an overflow protection, a protection channel 356 is provided.With the device 300 for supplying fresh water to the grey water container 586, the supply of fresh water takes place safely in such a way that contamination of the fresh water with grey water is effectively prevented. This is achieved in that for the fresh water supply to the grey water container 586, there is a cascade with a plurality of hydraulic jumps in the form of vertical offsets 316, 304, 326, 586. The device 300 for supplying fresh water is structurally simple and can be produced cost-effectively. Moreover, it is ensured that the supply with fresh water takes place only when it is absolutely necessary.The exact structure and the mode of operation of this device 300 for supplying fresh water can be gathered from the applicant's Utility Model Application DE 20 2025 101 374.6, filed in the same date, "Device for supplying a grey water container with fresh water from a fresh water connection", the content of which in this respect is hereby incorporated in its entirety by reference.In Fig. 28a, the timing of a gray water use system (not shown) is shown, in which the delay means 364, 366, 560 according to the invention do not exist. It can be seen from the overlapping time ranges t 1- t 4( activation of the flushing process), t 2- t 6( activation of the grey water supply) and t 3- t 5( activation of the fresh water supply) that here already during the flushing process the fresh water supply to the flushing tank is opened and just later also new grey water is introduced from the intermediate storage into the flushing tank.This has the disadvantage that both the incoming new fresh water and the incoming new grey water are supplied to the rinsing tank when the rinsing process has not yet been concluded, so that this fresh water and grey water is lost or leads to an increased discharge of rinsing liquid.In contrast, it can be seen from the time sequence of the system 700 according to the invention for gray water use, which is illustrated in FIG. 28 b, in the non-overlapping time ranges t 1'- t 2' ( activation of the flushing process), t 2'- t 3' ( activation of the gray water supply) and t 3'- t 4' ( activation of the fresh water supply) that the delay means 364, 366, 560 used according to the invention have the result that the gray water supply from the first container 506 is started only after completion of the flushing process from the second container 586 and the fresh water supply to the second container 586 is started only after completion of the gray water supply.This has the advantage that as much grey water as possible can be introduced into the second container 586 without leading to an excessive grey water discharge during the rinsing. The stored grey water is therefore used very efficiently. In addition, only as much fresh water is supplied to the second reservoir 586 as is absolutely necessary, so that the system 70 for gray water use bypasses fresh water very economically.From the above description it has become clear that with the present invention a solution has been created which brings improvements to the effect that the device 500 according to the invention for gray water storage ensures that as much gray water as possible is always stored without having to enrich it with fresh water. The grey water is used very efficiently and a predefined and constant amount of grey water is always provided to the grey water collector 702 for use. The supply with fresh water is effected only when it is absolutely necessary. In this case, device 500 for storing grey water is of a structurally simple design and can be produced cost-effectively. It can be integrated very easily in front wall installations and enables the system 700 according to the invention for gray water use to be designed very compactly, wherein the device 500 for gray water storage simultaneously forms the carrier of the gray water generator 12. The transfer of grey water into the fresh water connection 302 is effectively prevented.List of reference characters10 In a preferred embodiment of the device according to the invention for supplying grey water from the grey water generator to the device according to the invention for grey water storage 12 grey water generator, wash basin 14 grey water outlet 16 inlet 18 outlet 20 discharge connection 22 housing 24 outlet housing 26 outlet funnel 28 fastening flange 30 overflow housing 32 filter housing 34 treatment housing 36 valve housing 38 screw connection 40 upper encircling collar 42 annular elastic sealing element 44 annular chamber 46 overflow channels 48 annular segment-shaped discharge surface 50 inner projection 52 collar 54 groove 56 elastic sealing ring 58 inner wall of the outlet housing 24 60 overflow openings 62 annular chamber, Dead space 64 cylindrical cage section 66 filter fabric 68 microscopic filter 70 upper end of the cage section 64 72 circumferential collar 74 struts 76 macroscopic filter 78 groove 80 elastic sealing ring 87 extending about the longitudinal axis L deflection plate 87 a collar 88 groove 90 elastic sealing ring 92 wall of the valve housing 36 94 valve 96 cage section of the treatment housing 34 100 upper end of the cage section 96, Collar 101 Bottom of the cage housing 96 102 Cap 103 Handle 104 Collar 106 Cover 108 Aperture 110 Supports 114 Annular space 116 Annular space 120 Annular barrier 122 S-shaped discharge channel 124 Inner wall of the dead space 62 132 Collar of the lower cage section 134 Groove of the collar 132 156 Projections of the sealing element 42 300 Preferred embodiment of the device according to the invention for supplying fresh water 302 Fresh water connection 304 Third container, "fresh water container" 306 Outlet 308 Actuating means, Float valve 310 outlet bend 312 horizontally extending section 314 vertically extending section 316 outlet opening 322 lower part of the fresh water container 304 324 shallower part of the fresh water container 304 326 outlet edge 328 side wall 329 side wall 330 first vertical section of the side wall 328 332 second vertical section of the side wall 328 334 discharge surface 338 upper edge of the discharge surface 334, overflow edge 340 outlet skirt, outlet surface 341 break-off edge 342 surface 344 horizontal part of the surface 342 346 vertical part of the surface 342 348 aperture 350 recess 354 external thread 356 protective channel 358 valve 360 lever mechanism 362 floating body 364 container, second delay means 366 control bore, second deceleration means 368 non-return flap 370 posts 372 inlet edge 374 cover 376 upper opening of the container 364 500 preferred embodiment of the device according to the invention for storing grey water, tank arrangement 502 washer 504 housing, tank housing 506 first insert, first container, "intermediate storage container" 508 second insert, device 300 according to the invention for supplying fresh water 510 supports 512 openings 514 projections 515 spacing between the housing 504 and the inserts 506, 508, 516 vertical wall 516 a wall section of the wall 516 516 b wall section of the wall 516 518 upper edge 520 base of the housing 504 522 vertical wall of the housing 504 526 lateral recess 528 feet 530 support point, Spike 532 openings 534 central overflow 536 overflow edge 538 overflow pipe 540 overflow connection 542 depression 544 opening 546 flushing valve 548 overflow of flushing valve 546 550, 552 channels 551 wall section of second container 586 554 vertically rising wall 556 inner bottom surface 558 inner side surface 560 grey water guide channel, first delay means 562 inflow region of flushing valve 546 563 inward curvature of inner side surface 558 564 constriction of grey water guide channel 560 566 inner wall 568 first region of first container 506 570 bottom of insert 506 572 opening 574 overflow edge, upper edge of inner wall 566 576 second region of first container 506 578, 580 openings 582, 584 check valves 586 second container, "flushing container", "Flushing tank" 588 Overflow edge of the overflow 548 590 Operating elements for toilet 702 700 Preferred embodiment of the system according to the invention for gray water use 702 Gray water collector, toilet 704 Front wall installation 706 Auxiliary frame 708 Screen 710 Cover of the toilet 702 712 Shell 714 Cover 716 Cover 717 Central opening of the cover 714 718 Fresh water inlet 720 Fitting of the fresh water inlet 722 Outlet 724 Outlet for the toilet 702 726 Overflow channel from the first container 506 into the central overflow 534 728 Siphon for toilet 702 d A Vertical distance between outlet edge 326 and outlet opening 316 d U Distance between overflow edge 338 and outlet opening 316 H Horizontal L Longitudinal axis of the device 10 S Flow direction V VerticalReferences included in the specificationThis list of documents cited by the applicant has been produced in an automated manner and is only included for the better information of the reader. The list is not part of the German patent application or utility model application. The DPMA does not take any adhesion for any faults or omissions.Patent Literature citedDE 20 2025 101 374.6 [0071, 0288]DE 20 2025 101 371.1 [0073, 0266]

Claims

Device (500) for storing grey water, comprising a first container (506) for collecting grey water from a grey water inlet (20) connectable to a grey water generator (12) and a second container (586) for providing grey water for a purpose of use, wherein the second container (586) has a lockable outlet (544) connectable to a grey water collector (702), wherein the first container (506) has an interface (550, 552, 560, 578, 580, 582, 584) for fluid communication with the second container (586), wherein a fresh water connection (302) exists, characterized in that the fresh water connection (302) is connected to the second container (586) but not to the first container (506).Device (500) according to Claim 1, characterized in that no fresh water connection exists in the first container (506), and / or in that the device (500) is designed such that no fresh water can enter the first container (506), and / or in that the interface (550, 552, 560, 578, 580, 582, 584) for fluidic communication has a check valve (582, 584) which prevents the flow of grey water located in the second container (586) into the first container (506), and / or in that the first container (506) has an overflow (534) which preferably opens into an overflow and / or outflow (18) of a device (10) which provides the grey water, wherein the overflow (534) opens into the outflow (18) of a wash basin (12) in particular, and / or that the first container (506) has a larger maximum capacity than the second container (586) and / or that the interface (550, 552, 560, 578, 580, 582, 584) for fluid communication is arranged in the region of the bottom (570) of the first container (506), preferably in its bottom, in particular at the lowest point of the bottom, and / or that the interface (550, 552, 560, 578, 580, 582, 584) for fluid communication is formed as a drain into the second container (586), and / or that the drain (544) has a flushing valve (546) and / or serves for flushing a sanitary object (702).Device (500) according to claim 1 or 2, characterised in that first delay means (560) are provided which delay the transfer of grey water from the first container (506) into the second container (586), wherein the first delay means (560) are preferably - arranged in the region of the base (556) of the second container (586), in particular on the base of the second container, and / or - arranged in the region of the interface (550, 552, 560, 578, 580, 582, 584) for fluid communication and / or - part of the interface (550, 552, 560, 578, 580, 582, 584) for fluid communication.Device according to claim 3, characterised in that the first delay means (560) are designed to be automatically and / or electrically actuated and / or that the first delay means (560) bring about a delay time for the inflow of grey water from the first container (506) into the second container (586) and / or into the outlet (544) in the range 1 s to 10 s, preferably in the range 3 s to 7 s, further preferably in the range 4 s to 6 s, in particular of 5 s.Device (500) according to either of Claims 3 and 4, characterized in that the first delay means have a grey water guide duct (560) with an inlet (550, 552) from the first container (506) and an outlet into the second container (586).Device (500) according to claim 5, characterised in that the grey water guide channel (560) has a length in the range from 0.5 cm to 50 cm, preferably in the range from 2 cm to 30 cm, further preferably in the range from 5 cm to 20 cm and in particular in the range from 8 cm to 12 cm and / or that the grey water guide channel (560) is designed to be closed at the top in the vertical direction or to be at least partially open and / or that the grey water guide channel (560) extends at least partially around the flushing valve, wherein the azimuthal angle of the extension is preferably in the range between 60° and 360°, preferably in the range from 90° to 270° and in particular is 180°, and / or that the grey water guide channel (560) extends at least partially around the outlet (544), wherein the azimuthal angle of the extension is preferably in the range between 60° and 360°, The gray water guide channel may be configured to be curved in the range of 90° to 270° and may be 180°, and / or the gray water guide channel (560) may be configured to be extendable, and / or the gray water guide channel (560) may have a cross section transverse to the flow direction through the gray water guide channel (560) in the range of 1 cm 2 to 10 cm 2, may be configured in the range of 2 cm 2 to 8 cm 2 and may be configured in the range of 3 cm 2 to 5 cm 2 and / or the gray water guide channel (560) may have a closure and / or a constriction (564) in the flow direction of the gray water.Device (500) according to one of the preceding claims, characterized in that the overflow (534) of the first container (506) according to claim 2 is vertically lower than an overflow (548) of the second container (586), wherein the overflow (534) of the first container (506) is preferably in the range from 1 cm to 50 cm, preferably in the range from 2 cm to 20 cm, in particular in the range from 2.5 cm to 10 cm vertically lower than the overflow (548) of the second container (586).Device (500) according to one of the preceding claims, characterized in that the first container (506) comprises a first region (568) and a second region (576), wherein the first region (568) has the grey water inlet (20) and a separating wall (566) is present between both regions (568, 576) which prevents the transfer of grey water from the first region (568) into the second region (576), wherein the separating wall (566) has an overflow (574) which allows the transfer of grey water from the first region (568) into the second region (576) as soon as the fill level in the first region (568) exceeds the vertical height of the overflow (574).Device (500) according to claim 8, characterised in that the first region (568) has a volume in the range from 0.5 l to 5 l, preferably in the range from 1 l to 2.5 l, in particular from 1.5 l to 2 l and / or that the first region (568) has a vertical height in the range from 10 cm to 20 cm, preferably in the range from 13 cm to 17 cm, in particular from 15 cm and / or that both the first region (568) and the second region (576) are in fluid communication with the second container (586), wherein preferably a) a check valve (582, 584) is arranged both between the first region (568) and the second container (586) and also between the second region (576) and the second container (586), preventing the flow of flushing water located in the second container (586) into the first region (586) or into the second region (576), and / or b) first delay means (560) according to claim 3 are respectively arranged both between the first region (568) and the second container (586) and between the second region (576) and the second container (586), wherein the first region (568) and the second region (576) are in particular connected to the same first delay means (560).Device (500) according to one of the preceding claims, characterized in that the fresh water connection (302) is connected to a third container (304), which preferably has c) an overflow (326) into the second container (586), and / or d) a volume in the range from 10 ml to 300 ml, preferably in the range from 40 ml to 200 ml, in particular in the range from 60 ml to 80 ml, that one or more hydraulic jumps (316, 304, 326, 586) exist downstream of the fresh water connection (302) in the flow direction of the fresh water, wherein vertical offsets (316, 304, 326, 586) of the fresh water flow preferably exist in the jumps, and / or that a fresh water container (304) and a grey water container (586, 506) each have their own container walls (328, 329, 520), which are arranged at least in regions at a distance from one another, wherein there is preferably an air gap (515) between the container walls (328, 329, 520).Device (500) according to one of the preceding claims, characterized in that, for opening the fresh water connection (302), an actuating means (308), preferably in the form of a float valve (308) or a solenoid valve with fill level sensor, which is in contact with the fill level of the second container (586), is provided, wherein the actuating means (308) has in particular second delay means (364, 366).Device according to claim 11, characterised in that the second retardation means (364, 366) comprises a container (364) in which a control bore (366) exists, wherein the container (364) preferably has - a non-return flap (368) which blocks the inflow of liquid into the container (364) through the control bore (366), wherein the non-return flap (368) is in particular at a vertical height of the device (500) which is above the height of grey water which has overflowed from a fully filled first container (506) into the second container (586), and / or - a cover (374) in order to prevent the direct ingress of fresh water from the fresh water container (304), and / or in that the second retardation means (364, 364, 366) bring about a time delay between a lowering of a fill level in the second container (586) and the supply of fresh water into the third container (304) in the range from 0 s to 30 s, preferably from 5 s to 20 s, in particular 15 s, and / or that the delay time of the second delay means (364, 366) is greater than the delay time of the first delay means (560) and / or that the first delay means (560) and the second delay means (364, 366) are matched to one another such that the opening of the fresh water connection (302) takes place only when a specific amount of grey water has passed from the first container (506) into the second container (586), and / or that the second delay means (364, 366) are configured to open the fresh water connection (302) in the range from 1 s to 60 s, 366), The opening of the outlet is preferably effected from 5 s to 30 s, in particular from 10 s to 20 s, after opening of the outlet.Device (500) according to one of the preceding claims, characterized in that the first container (506) has a base (570) which is arranged higher in the vertical direction than a base (556) of the second container (586), wherein it is preferably provided that the vertical distance of the two bases (570, 556) is in the range from 1 cm to 50 cm, preferably in the range from 5 cm to 30 cm, in particular in the range from 8 cm to 15 cm.Device (500) according to one of the preceding claims, characterized in that a housing (504) is provided, in which the first container (506) and the second container (586) and preferably the third container (304) according to claim 10 are arranged, wherein preferably e) all three containers (506, 586, 304) are arranged in the housing (504) and / or f) the second container (586) is delimited by a wall (520) of the housing (504) and the first container (506) and / or g) the housing (504) has a round cross section with respect to a horizontal plane and / or h) the housing (504) serves as a carrier for a grey water generator (12), preferably in the form of a wash basin (12), wherein the housing (504) is in particular configured such that, the grey water generator (12) being arranged above the containers (506, 586, 304) arranged in the housing (504) and / or i) the housing (504) being formed integrally with at least one container (586).The device (500) according to any one of the preceding claims, characterized in that at least one container (506, 586, 304) is formed as part of a front wall installation (700), wherein preferably the first container (506) and the second container (586) are formed as parts of a front wall installation (700), wherein in particular the first container (506) is formed as part of a front wall installation of a washbasin installation (700) and / or the second container (586) is formed as part of a front wall installation of a WC (700), shower WC or bidet installation, and / or that at least one container (506, 586, 304), preferably the first (506) and the second container (586) is formed in a front wall installation (700), The arrangement of the cladding is not visible behind a cladding (712) (for example a dry construction wall / tile wall or the like), wherein the cladding has in particular a inspection opening or in each case a inspection opening assigned to the respective container.System (700) for grey water use, comprising the device (500) according to any one of claims 1 to 15, wherein additionally a grey water generator (12) and / or a grey water collector (702) consist.System (700) according to Claim 16, characterized in that the system (700) comprises a device (300) for supplying a grey water container (500) with fresh water from a fresh water connection (302), wherein the device (300) is designed for supplying a grey water container (500) with fresh water from a fresh water connection (302) having a wall (328, 329) which has at least regionally a spacing (515) from the first container (506) and / or from the second container (586), wherein the spacing is designed in particular as an air gap (515), and / or in that the system (700) comprises a device (10) for supplying grey water from a grey water generator (12) to a grey water collector (500, 702).

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