EP0872602A2 - Device and method for the use of waste water - Google Patents

Abstract

The tank (40) and the cistern (60) each contain a level switch device (41,62). The first pump (26) together with a third level switch device (25) is fitted at the odour closure (23) of the apparatus (20) producing waste water. The third level switch (25) with a rising level in the odour closure and a full tank (40) effects a diversion of the excess waste water into the channel arrangement connecting to the odour closure. At the input of the first pump device (26) a filter is arranged (29) and the tank (40) contains a third pump device, which for cleaning the installation pumps waste water from the tank into the channel arrangement.

Description

The invention relates to a system for waste water use in the household a wastewater-generating device that has a first pumping device a tank is connected, the tank via a second pumping device connected to the cistern of a toilet and the tank and the Cistern each contain a level switch. The invention further relates to a Wastewater Use Process.

Due to the large amounts of wastewater that are generated every day, today's agitation is stirring Time more and more voices that promote better wastewater use would like. For example, some concepts are already known, rainwater catch and via a pipe system this for flushing in toilets use. Such wastewater use is already common among companies applied.

In principle, especially in the household sector, there is hardly any pollution Water released into the sewage system. Every year millions of Cubic meters of fresh water very quickly to wastewater and therefore wasted. Since fresh water is becoming scarce on our planet, at least in the next few decades, it is necessary to use the precious fresh water only if possible to use necessary applications.

It is known to save fresh water in the household sector (DE 41 34 272 A1), which is generated by a wastewater generating device such as a Bathtub, shower tray or washing machine collect in a tank and use filter media with a pump from the tank to the cistern of a toilet as required. Such systems for the use of wastewater require in particular retrofitting in household systems changes in the already existing system such as on the cisterns. In particular, must an overflow can be provided on the tank or on the cistern, which excess waste water that is temporarily not needed by the toilet is discharged into the sewage system.

The invention has for its object the design effort for a to simplify such plant for the use of waste water and in particular to achieve that with a subsequent installation of the system in existing household systems on the existing devices, especially on the cistern, no or only a few changes required are.

The object is achieved in a generic system in that the first pump device together with a third level switching means on Odor trap of the waste water generating device is arranged and that third level switching means with increasing level in the odor trap and full tank a discharge of the excess wastewater into the Odor trap subsequent sewerage causes.

It is also solved by a process in which waste water in the Household area from a tub, a basin or another Wastewater generating device via a first filter and pump device in a tank is transported in which the tank has a second Pumping device transports the wastewater into a toilet cistern and where the waste water is used for flushing in the toilet which the level of the waste water in the drain trap of the tub, the pool or the device producing wastewater is queried via level switching means, and in which the first pumping device for filling the tank Level switching means is switched controlled, the when the tank is empty Wastewater is pumped into the tank and the wastewater into the tank when the tank is full Sewerage is promoted.

In the invention, the first pump device is thus together with a third level switching means on the odor trap of the waste water Device arranged, and the third level switching means causes increasing Level in the odor trap and full tank a derivative of the excess waste water in the subsequent to the odor trap Sewerage.

In the solution according to the invention, the odor trap, the is practically present in every wastewater generating device, in the sense of a Double use for two purposes. Once serves Odor trap for easy and safe measurement of how big the attack Is waste water. The water level in the Odor trap indicates whether there is no waste water to feed the system is available and fresh water must be fed in if necessary, whether Waste water is available in sufficient quantity for feeding into the plant or whether there is any excess wastewater that goes into the sewage system must be derived.

On the other hand, the sewer following the odor trap serves when excess wastewater has to be drained, for draining of the wastewater into the sewage system. The level measurement on the one hand and the On the other hand, the excess wastewater is discharged in advantageously directly at the point where the wastewater is generated. This results in a structurally particularly simple solution in which only minimal changes to an existing toilet facility are required. Also an overflow for excess wastewater, as in the prior art either on the tank or on the cistern is not required because in principle no excess wastewater is fed into the plant. The The system therefore does not need any for the discharge of excess wastewater additional channel connection and no tapping of an existing one Sewer connection. The level switch in the odor trap causes one constant level of waste water in the odor trap, so that the perfect function of the odor trap to prevent odors is guaranteed.

In another embodiment of the invention, the second is Pumping device in the lower area of the tank. This will make a complete The tank has been emptied.

In another embodiment of the invention, one is the second Pump device with the cistern connecting pipeline within the Inflow pipe from the cistern to the toilet and thus remains with one Retrofit invisible.

In a development of the invention is at the entrance of the first A filter is provided in the pumping device and the tank contains a third one Pumping device used to clean the system waste water from the tank in the Sense of a so-called backwash in the sewage system. Through this Solution can be cleaned at regular intervals with little effort the system can be effected by backwashing. Preferably, the third pumping device arranged in the area of the tank in which the Waste water is introduced into the tank by the first pumping device.

According to another development of the invention, the tank is a electrical control unit with control inputs and control outputs assigned. There is a first control input with a level switching means in the drain trap, a second Control input with the level switching means in the tank, a third control input with the level switching means in the cistern, a first control output with the Pump device in the odor trap, a second control output with the Pump device in the tank and a third control output with the Solenoid valve connected. This control unit is controlled by a central Control after evaluating all the necessary parameters Function of the entire system in all conceivable operating states guaranteed.

The level switching means in the tank is preferably with a float formed an upper and a lower switching element. It will Switching element in an advantageous manner by a limit switch or one-sided float switch formed. The level switch in the cistern can by a limit switch or a one-sided float switch and a solenoid valve may be formed.

In addition, a process for wastewater use that is variable can also be adapted to the needs of small households. Preferably it can can also be combined with other known methods for waste water use, for example for the use of collected rainwater. Because of the compactness of the device and its simple structure can be on the one hand, they can be installed inexpensively in every household. On the other hand, can they are also designed so small that they can be used even in small spaces is usable. Except for direct use in the bathroom between one Bathtub, shower tray, hand basin or waste water generating device and a toilet can also be embodiments produce in which, for example, via leads in the Kitchen waste water can be used for flushing the toilet.

In the process, the level of the waste water in the odor trap Tub or basin polled via level switching means and the first filter and Pump device for filling the tank switched by sensor control, with the tank empty, the waste water, preferably over contamination intercepting filter, is pumped into the tank and the waste water when the tank is full flows into the sewage system.

The level of the water in the cistern is preferably controlled by a switching means queried, when the tank is full, the second pumping device for filling the cistern operated with waste water by a control device or at empty tank the inflow of waste water from the tank through the control device closed and the inflow of fresh water or filtered other water, such as rainwater, opened in the toilet cistern. This means that as little fresh water as possible is used for flushing the toilet used. In general it will be sufficient to use the collected one Use wastewater for flushing toilets.

The wastewater from a sink in the bathroom is particularly preferred, in a toilet room, in a kitchen or laundry room or that too Pump water from a washing machine, dishwasher or other household wastewater generating device rather than into the sewer system pumped into the tank and used from there to flush the toilet. To for this purpose there are further inlets and outlets from the individual water consumers to the tank, but it turns out to be special advantageous, of all fresh water consumption, the resulting wastewater continue to use to achieve better efficiency.

Because of the only slightly different mounting height of the cisterns toilets become the second pumping device in the tank in most cases have a uniform delivery rate. It can therefore also be used for completely different areas of application each the same pumping device sizes be used. A possible adaptation to different sizes of Rooms and apartments as a whole, especially houses then provided in the first filter and pump device. Their size is to the appropriate distance between the wastewater producer and the Tank, preferably near the cistern of the corresponding toilet, Voted.

Figur 1

eine perspektivische Ansicht einer ersten Ausführungsform einer erfindungsgemäßen Vorrichtung zur Abwassernutzung,

Figur 2

eine zweite Ausführungsform einer erfindungsgemäßen Vorrichtung zur Abwassernutzung,

Figur 3

eine Prinzipskizze als Schnittansicht der Vorrichtung gemäß Figur 2,

Figur 4

eine weitere Ausführungsform einer erfindungsgemäßen Vorrichtung und

Figur 5

eine Prinzipskizze für die Stromversorgung der einzelnen Komponenten zur Durchführung des erfindungsgemäßen Verfahrens.

In order to explain the invention in more detail, exemplary embodiments of devices for using wastewater are described below with the aid of the drawings. These show in:

Figure 1

2 shows a perspective view of a first embodiment of a device for waste water use according to the invention,

Figure 2

a second embodiment of a device for waste water use according to the invention,

Figure 3

2 shows a schematic diagram as a sectional view of the device according to FIG. 2,

Figure 4

a further embodiment of a device according to the invention and

Figure 5

a schematic diagram for the power supply of the individual components for performing the method according to the invention.

FIG. 1 shows a first embodiment of a device 1 according to the invention for the use of waste water. The device 1 is arranged in a bathroom. The device is integrated in a wall 2. The cistern 10 of a toilet 3 is also arranged in this wall 2. The toilet is a hanging toilet. The cistern is a so-called concealed cistern.

The device 1 not only has a connection to the cistern 10, but also also with a tub 20, for example a shower tray. The connection happens via lines 30, 31. The lines 30, 31 are also in the wall 2 is provided integrated. As a result, they are not visible from the outside. Only one control panel 4 of the device is on the outside of the wall 2 arranged and therefore visible.

FIG. 2 shows a second embodiment of a device 1 for waste water use according to the invention. The device 1, like in FIG. 1, is provided between the tub 20 and the toilet 3. 2, however, the toilet 3 has a cistern 11 placed in front of the wall 2. In contrast to the toilet 3 in FIG. 1, the toilet stands on the floor. On this also a cladding 5 of the device 1 stands up as a box-shaped element. A tank with control device and pump device is provided under the cladding for collecting waste water. The lines 30, 31 for connecting the tub, the device and the cistern are provided concealed in the cladding 32.

FIG. 3 shows a schematic diagram as a sectional view of the overall arrangement of tub 20, tank 40 and cistern 60.

The tub 20 has a drain opening 21. Below the drain opening is followed by a tube 22. The pipe is bent several times as an odor trap 23. The drain to the sewage system, which is connected to the Odor trap connects.

A line 24 is also connected to the odor trap 23 Drainage of waste water is intended for further use. The derivative 24 is simply bent and opens into a first pump device 26 with a filter 29. The pump device 26 is still inside the outer shell of the tub 20 intended. By providing the filter 29 is already during the Pumping frees the wastewater from coarse impurities.

For filling level inquiry within the odor trap 23 is in one a predetermined level, a level switching means 25 is arranged. The level switching means 25 is provided with signal lines 27. The signal lines 27 lead to the Pump device 26 and a control device 50 within the Fairing 5 around the tank 40. Level switching means 25 can be, for example Limit switch, which is arranged at a predetermined height, at If the water level drops below this level, a signal for Switching off the pump device 26, otherwise the odor trap will not works more properly.

Starting from the first pump device 26, the line 30 leads to the Tank 40. Line 30 is clad in casing 32. Inside the formwork also become the signal lines of the level switching means 25 guided. The line 30 opens into the tank 40 from above. It is closed curved several times for this purpose.

Inside the tank 40 is a float switch 41 with a float 43 and two signal lines 42 are arranged. The float 43 moves between a lower switching element and an upper switching element 47, 46. Er thereby indicates the water level within the tank 40. The two signal lines 42 also lead to the control device 50 within the Fairing 5 around the tank 40.

In the tank 40 there is a second pump device 44 on the bottom of the tank 40 provided. It is connected to the control device via two signal lines 45 50 connected. Is connected to the second pump device 44 the line 31. It leads out of the tank in its upper area. The Line 31 opens after multiple kinks in the cistern 60. The line In the embodiment shown in FIG. 3, 31 is inside the inflow tube 61 from the cistern 60 to the toilet. The line 31 is therefore not visible from the outside.

A limit switch 62 with signal lines 63 is arranged in the cistern 60. The limit switch 62 serves to report the fill level in the cistern 60.

In the supply line 80 to the cistern 60 is a solenoid valve 70 with signal lines 71 provided. The solenoid valve 70 opens the supply line if necessary 80 for the inflow of fresh water into the cistern, if there is not enough waste water has flowed from the tank 40 into the cistern. The signal lines 71 from the solenoid valve 70 and 63 from the limit switch 62 are from the cistern 60 out through the casing 32 of the line 31 into the lining 5 of the tank 40 to the control device 50.

The control device 50 is connected to the power supply via a power supply unit 52 51 connected. A control device usually works with 12 volts instead of the mains voltage of 230 volts.

The device according to the invention now functions as follows. When using the tub and thereby generating Waste water increases the waste water level in the odor trap 23. Das Level switching means 25 switches, controlled by the control device 50, the first pump device 26. If the float switch 41 in the tank 40 Signal that the tank is not completely full, so the float 43 is not applied to the upper switching element 46, is by the level switching means and thereby by the control device 50 for the first pump device 26 Pump signal given. The waste water from the tub is therefore through the lines 24 and 30 conveyed into the tank 40.

The float switch 41 gives by the float 43 on the upper Switching element 46 receives the signal that the tank 40 is filled, the first Pump device 26 the signal, the promotion for filling the tank 40th adjust. The upper switching element 46 outputs the signal line 42 a signal to the control device 50, whereby the pump device last 26 turns off. The waste water from the tub flows through the in Figure 3 Drainage channel, not shown, into the sewage system.

If the toilet is used and the cistern is operated, the water level in the Cistern. The limit switch 62 is thereby opened. Via the signal lines 63 it forwards this signal to the control device 50. The control device 50 thereby speaks the second via the signal lines 45 Pump device 44 in the tank 40. If the tank is filled with waste water, promotes the second pumping device 44 waste water via the line 31 in the Cistern 60.

If the float switch 41 by the float 43 at the bottom Switching element 47 to the control device 50 gives the signal that the Is completely emptied, this is reported to the control device 50. The control device 50 outputs a corresponding signal to the Solenoid valve 70 via the signal lines 71. The solenoid valve 70 in the feed line 80 for fresh water is opened and leaves the fresh water in inflow the cistern 60. The cistern 60 is thereby again with Rinse water filled for the toilet. After completely filling the The cistern 60 receives a corresponding signal from the limit switch 62 given the control device 50, which closes the solenoid valve 70.

By providing the level switching means 25 in the odor trap 23 at the same time ensures that there is always water and the function of the Odor trap, namely preventing odor nuisance, is ensured. As an alternative to the level switching means 25, sensors could also be used be provided if this does not mean that the Prevent device. So you should be insensitive to dirt be and deliver precise signals despite pollution.

Due to the constant query of the individual components of the invention Device is essentially one hundred percent exploitation of the wastewater generated for flushing the toilet and thereby reducing it the need for fresh water for flushing the toilet to a minimum possible.

As an alternative to the embodiment shown in FIG. 3, the spout can be attached another pumping device into the line 40 into the tank 40 can be connected as shown in Fig. 4. This pump device 48 speaks on reaching the maximum filling level of the waste water in the tank 40; through the Control device 50 puts it into operation via signal lines 49. It pumps the wastewater back into line 30 through filter 29 between Drain 24 and pump device 26 to clean it. Preferably 5 liters of waste water are used to rinse the filter 29 pumped back and thereby automatically with every maximum tank filling Contamination in the filter is carried into the sewage system.

FIG. 5 shows the basic connection of the individual components of the device 1 according to the invention. The level switching means 25 for querying the fill level of the odor trap 23 of the tub 20 is connected with its two signal lines 27 to the pump device 26 and the upper switching element 46 of the float switch 41. This is connected to a 12 volt DC power supply. The level switching means 25 is also connected on its switching side to the float switch 41 in the tank 40. The first pump device 26 is thereby switched both by the level switching means 25 and by a float switch in relation to the float switch 41 in the tank 40.

The float switch 41 is also supplied with a 12 volt DC voltage. The solenoid valve 70 and the are on the same power supply Limit switch 62 in the cistern. The second pump device 44 is also included a corresponding voltage.

Second pump device 44 and limit switch 62 are signal-related to one another connected. The second pump device can therefore when the End position of the limit switch 62 can be switched off directly. Because of the signaling Connection between float switch 41 and solenoid valve 70 finds an opening of the solenoid valve when the lower one is reached Switching element 47 of the float switch 41 by the float 43 instead.

Reference list

1

contraption

2nd

wall

3rd

Toilet

4th

Control panel

5

Cladding

10th

cistern

11

cistern

20th

Tub

21

Drain opening

22

pipe

23

Odor trap

24th

Derivative

25th

Level switching means

26

first pump device (P ₁ )

27

Signal lines

29

filter

30th

management

31

management

32

Formwork

40

tank

41

Float switch

42

Signal lines

43

swimmer

44

second pump device (P ₂ )

45

Signal lines

46

upper switching element

47

lower switching element

48

third pumping device (P ₃ )

49

Signal line

50

Control device (ST)

51

Power supply

52

power adapter

60

cistern

61

Inflow pipe to the toilet

62

Limit switch

63

Signal lines

70

Solenoid valve (M)

71

Signal line

80

Fresh water / rainwater supply

Claims (14)

Installation for waste water use in the household area with a waste water generating device (20) which is connected to a tank (40) via a first pump device (26), the tank (40) being connected to the cistern (10, 11, 60) of a toilet (3) via a second pump device (44) and the tank (40) and the cistern (60) each contain a level switching means (41, 62),
characterized, that the first pump device (26) is arranged together with a third level switching means (25) on the odor trap (23) of the waste water generating device (20) and the third level switching means (25) when the level in the odor trap (23) and the full tank (40) increases, causes the excess waste water to be discharged into the sewer system connected to the odor trap (23). System according to claim 1,
characterized, that a filter (29) is provided at the entrance of the first pumping device (26) and the tank (40) contains a third pumping device (48) which pumps sewage from the tank (40) into the sewage system for cleaning the system. System according to claim 2,
characterized, that the third pumping device (48) lies in the region of the tank (40) into which the waste water is introduced into the tank (40) by the first pumping device (26). System according to one of the preceding claims,
characterized by that the second pump device (44) is in the lower region of the tank (40). System according to one of the preceding claims,
characterized, that a pipe (31) connecting the second pump device (44) to the cistern (60) is led from the cistern (60) to the toilet within the inflow pipe (61). System according to one of the preceding claims,
characterized, that the tank (40) is assigned an electrical control unit (50) with control inputs and control outputs, wherein a first control input with level switching means (25) in the odor trap (23) of the wastewater-producing device (20), a second control input with the level switching means (41) in the tank (40), a third control input with the level switching means (62) in the cistern (60), a first control output with the pump device (26) in the odor trap (23), a second control output with the pump device (44) in the tank (40) and a third control output is connected to the solenoid valve (70). System according to one of the preceding claims,
characterized, that the level switching means in the tank (40) is formed by a float (43) with an upper and a lower switching element (46, 47). System according to claim 7,
characterized, that the Schaltelernent (46, 47) is formed by a limit switch or a one-sided float switch. System according to one of the preceding claims,
characterized, that the level switching means (62) in the cistern (60) is formed by a limit switch or a one-sided float switch and a solenoid valve (70). System according to one of claims 6 to 9,
characterized, that the control unit (50) is operated with a low voltage in the order of 12 volts. Wastewater Use Process,
in the case of which wastewater in the household area is conveyed from a tub (20), a basin or another wastewater-producing device via a first filter and pump device (26) into a tank (40), in which the waste water is conveyed from the tank (40) via a second pump device (44) into a cistern (10, 11, 60) of a toilet (3), where the wastewater is used for flushing in the toilet, in which the level of the waste water in the odor trap (23) of the tub (20), the pool or the waste water generating device is queried via level switching means (25), and in which the first pump device (26) for filling the tank (40) is switched in a controlled manner by level switching means (25), the waste water being conveyed into the tank (40) when the tank (40) is empty and the waste water into the sewerage system when the tank is full is promoted. A method according to claim 11,
characterized, that the level of the water in the cistern (10, 11, 60) is queried via a switch means (62), that when the tank (40) is full, the second pump device (44) for filling the cistern with waste water is actuated by a control device (50) or that when the tank (40) is empty, the control device (50) closes the inflow of waste water from the tank and opens the inflow of fresh water into the cistern. The method of claim 11 or 12,
characterized, that the waste water from a sink or tub in a bathroom, toilet room, kitchen or laundry room or the pump water from a washing machine or dishwasher or similar waste water generating device is collected and pumped into the tank (40) and from there for toilet flushing is used. Method according to one of the preceding claims 11 to 13,
characterized, that a filter (29) upstream of the first pumping devices (26) is flushed by means of a third pumping device arranged in the tank (40), waste water being pumped out of the tank into the sewage system for this purpose.

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