EP0424622B1 - Flushing tank - Google Patents

Description

The invention relates to a cistern for flushing toilets with a water drain to a toilet bowl by a Flush valve is controlled by one above it in a housing standing water supply with an extension designed as a pipe protrudes through the interior of which is exhaust air from the toilet bowl from a vacuum generator to one through the Water supply extending, connected to the vacuum generator Suction pipe is sucked off, which to at least one from the Exhaust air-absorbing ventilator leads to toilet bowls.

Such a cistern is known from US-A-1 381 710. It is equipped with an exhaust pipe, which is an extension the purge valve. On the protruding from the rinse water supply a fan is provided at the top end of the extension, sucks the exhaust air from a toilet bowl and into an exhaust air duct pushes in. Between the exhaust pipe and the suction pipe no odor trap is provided, so that these two Pipes are always in open communication with each other. To this There is a risk that the exhaust air contaminated with bad smells, which is, for example, in a sewage system, constantly through the suction pipe into and from the toilet bowl penetrates into a toilet room surrounding the toilet bowl. The bad smelling that spreads in the toilet room in this way Exhaust air makes the system suitable for use in toilet rooms largely unsuitable.

The object of the present invention is therefore the cistern to improve the type mentioned in the introduction so that it at a simple installation and comparatively small dimensions optimal combination of flushing function on the one hand and suction function on the other hand allows without smelly exhaust air in the Toilet room can penetrate.

This object is achieved in that the extension and the suction pipe is designed as separate pipes and the pipes are controllable via a quantity of sealing water Connection to an upper one protruding from the water supply Have end of the extension and with the flush valve Form waste set, which in a leading out of the housing Opening is fixed, and the amount of sealing water in one out the water reservoir projecting in the separate State of the connection accumulated and to release the connection is reduced.

This cistern allows the union of the two functions of Toilet flushing on the one hand and exhaust air extraction on the other in an optimal way. He only owns two through the Pipes extending through the rinse water, one of which at the same time to actuate the flushing valve and to extract the Exhaust air serves while the other connects to the exhaust fan. This ventilator can be used depending on the local conditions of the installation either as an exhaust air filter or be designed as an exhaust air system into which the extracted exhaust air is dissipated.

With this exhaust air system, for example, several toilet bowls be connected, the exhaust air disposed of through the exhaust system becomes. However, it is also possible to use a sewage system as an exhaust air system to choose through which a general sanitation is made.

The suction pipe on the one hand and the extension on the other hand can be connected by a bell, which is both the extension as well as the suction pipe that runs inside it. This Bell advantageously dips into one with its lower edge their interior gas-tight sealing water volume, so that exhaust air brought in by the extension into the suction pipe can be suctioned off without exhaust air escaping from the bell can.

According to a further preferred embodiment of the invention the sealing water tank connected to a rinse water inlet via the rinse water is fed into the housing. In this way is a quantity of sealing water in the sealing water tank for rinsing purposes made usable when the amount of sealing water from the sealing water tank is ousted. The one at the top of the extension trained sealing water tank has the great advantage that on the one hand, it is small and constructive in a simple manner can be kept in the cistern. It takes up little space inside the case.

Figur 1

einen Querschnitt durch einen an einer Wand gehalterten und einerseits mit einem Toilettenbecken und andererseits mit einem Abwassersystem verbundenen Spülkasten,

Figur 2

einen Querschnitt durch einen mit einem Abluftfilter einerseits und einem Toilettenbecken andererseits verbundenen Spülkasten,

Figur 3

einen Querschnitt durch einen unteren Teil einer Ablaufgarnitur mit einem Magnetventil gemäß der Schnittlinie III-III und Figur 4.

Figur 4

einen Querschnitt durch eine Ablaufgarnitur gemäß der Schnittlinie IV - IV in Figur 3,

Figur 5

einen Längsschnitt durch einen unteren Teil einer Ablaufgarnitur mit einem anderen Magnetventil,

Figur 6

einen Längsschnitt durch einen Oberteil einer Ablaufgarnitur, und zwar je zur Hälfte im abgesenkten Zustand des Verdrängerkörpers und im geschlossenen Zustand des Spülventils,

Figur 7

einen Längsschnitt durch eine Ablaufgarnitur und zwar je zur Hälfte im geöffneten Zustand und im geschlossenen Zustand des Spülventils, jeweils mit abgesenktem Wasserpegel im Sperrwasserbehälter

Figur 8

einen Längsschnitt durch eine Ablaufgarnitur mit einem Schwimmergehäuse und konischem Querschnitt sowohl des Sperrwasserbehälters als des Verdrängerkörpers,

Figur 9

einen Querschnitt durch eine Ablaufsgarnitur entsprechend der Schnittlinie IX-IX in Figur 8,

Figur 10

einen Längsschnitt durch einen unteren Teil einer Ablaufgarnitur, und zwar jeweils zur Hälfte im geöffneten und im geschlossenen Zustand des Spülventils,

Figur 11

einen Querschnitt durch eine Ablaufgarnitur entsprechend der Schnittlinie XI-XI in Figur 10

Figur 12

eine Draufsicht auf eine den Ablaufstutzen mit dem Spülkasten verbindende Mutter,

Figur 13

einen Querschnitt durch eine Mutter entsprechend der Schnittlinie XIII - XIII in Figur 12,

Figur 14

eine Draufsicht auf einen am Ablaufstutzen drehbar gelagerten Montagering,

Figur 15

einen Querschnitt durch eine Ablaufgarnitur entsprechend der Schnittlinie XV-XV in Figur 8,

Figur 16

eine Systemskizze für eine andere Ausbildung einer Ablaufgarnitur,

Figur 17

eine Systemskizze für eine auf einer Absaugtoilette vorgesehene Ablaufgarnitur bei geschlossenem Spülventil und

Figur 18

eine Systemskizze für eine auf einer Absaugtoilette vogesehene Ablaufgarnitur bei geöffnetem Spülventil.

The drawings show:

Figure 1

3 shows a cross section through a cistern held on a wall and connected on the one hand to a toilet bowl and on the other hand to a sewage system,

Figure 2

2 shows a cross section through a cistern connected to an exhaust air filter on the one hand and a toilet bowl on the other hand,

Figure 3

a cross section through a lower part of a drain set with a solenoid valve according to section line III-III and Figure 4.

Figure 4

3 shows a cross section through a drain set according to section line IV - IV in FIG. 3,

Figure 5

a longitudinal section through a lower part of a drain set with another solenoid valve,

Figure 6

3 shows a longitudinal section through an upper part of a drain fitting, in each case half in the lowered state of the displacer body and in the closed state of the flushing valve,

Figure 7

a longitudinal section through a pop-up waste set, half in the open state and one in the closed state of the flush valve, each with a lowered water level in the sealing water tank

Figure 8

a longitudinal section through a pop-up waste set with a float housing and a conical cross section of both the sealing water tank and the displacement body,

Figure 9

FIG. 8 shows a cross section through a drain set according to section line IX-IX in FIG. 8,

Figure 10

2 shows a longitudinal section through a lower part of a drain set, in each case half in the open and in the closed state of the flush valve,

Figure 11

a cross-section through a drain set according to section line XI-XI in Figure 10

Figure 12

a plan view of a nut connecting the drain socket to the cistern,

Figure 13

3 shows a cross section through a nut according to the section line XIII - XIII in FIG. 12,

Figure 14

a plan view of a mounting ring rotatably mounted on the drain connector,

Figure 15

FIG. 8 shows a cross section through a drain set according to the section line XV-XV in FIG. 8,

Figure 16

a system sketch for another training of a drain set,

Figure 17

a system sketch for a waste set provided on a suction toilet with the flush valve closed and

Figure 18

a system sketch for a waste set provided on a suction toilet with the flush valve open.

A cistern essentially consists of a housing (1) and a drain fitting extending through its interior (2) (3). This is with its lower facing a toilet bowl (4) Part (5) in one the housing (1) on its the toilet bowl (4) facing the bottom (6) leading bottom (7). With its upper part (8) facing away from the lower part (5) it is in a lid (9) closing the interior (2) of the Housing (1) out. This is clamped on the floor (7) facing away upper ends (12) of walls (10, 11) on the Limit the housing (1).

The drain fitting (3) extends with a drain connector (13) through the floor (7). He is with the help of a sealing system (14) sealed against an opening (15) provided in the bottom (7). This sealing system (14) is designed as an O-ring (16), which extends through a receptacle (17) on a out of the housing (1) protruding outer surface (18) of the drain connector (13) is attached. This O-ring (16) is tight an outer surface (19) of the base (7) facing it when the Drain pipe (13) through the opening (15) into the interior (2) of the Housing (1) protrudes. The drain connector (13) is included Aided by a nut (20) in the opening (15). That mother (20) with its internal thread on an external thread (21) screwed on, which protrudes into the interior (2) External surface (18) is attached. The mother (20) can be with its bottom end (22) facing the bottom (7) on a spacer ring (23) support the one on the interior (2) facing Inner surface (24) of the bottom (7) rests.

The drain connector (13) protrudes from the housing (1) lower end (25) with the toilet bowl (4) via a Suction line (26) connected. In addition, the toilet bowl (4) via a sewage pipe (27) with a sewage system (28) connected via which the wastewater into a not shown Sewerage is derived.

A suction pipe (29) is guided in the outlet connection (13) a tubular extension (30) is surrounded concentrically with which forms an essential part of the drain fitting (3). This Suction pipe (29) extends with a connector (31) off-center through the drain connector (13) with which it is firmly connected is. The connector (31) can have a wall (32), those in the area of their closest approach to the connector (31) with an inner wall facing the connecting piece (31) (33) of the drain connector (13) is identical. The connector (31) is led out of the suction nozzle (13), the wall of which (34) it breaks through in one area with a connection end (35), which is outside the interior (2). Here is the connection end (35) firmly connected to the wall (34) with which it is a constructive Unity. At his out of the suction nozzle (13) protruding end (36) is the connection end (35) with an exhaust air line (37) connected. This can, for example, in the sewage system (28) lead into. However, it is also conceivable that Exhaust air line (37) to open into an exhaust air filter (38).

The suction pipe (29) is approximately perpendicular to the housing (1) extending main part (39) via a plug connection (40) connected to the connector (31). The main part (39) has a much larger diameter than the connector (31). In an interior (41) enclosed by the main part (39) a vacuum generator (42) with its drive (43) on a console (44) stored. The main part (39) extends with a sloping bottom (45) towards the plug connection (40), the opens off-center into the main part (39). The suction pipe (29) dominates the sloping floor (45) with an apron (46) between the and the sloping bottom (45) a pocket (47) is formed. This pocket (47) represents a receptacle for rinsing water (48), that after opening a flush valve formed on the nut (20) (49) sprayed on the suction pipe (29). In addition, you can in a between the suction pipe (29) and the extension (30) trained gap (50) scenes (51) can be arranged, the one narrow the cross section formed by the gap (50). Such scenes (51) can either on the suction tube (29) or the extension (30) over the entire length of the gap (50) to be distributed prevent flushing water after opening the flush valve (49) (48) splashed up in the gap (50).

The flush valve (49) has a valve seat (52) on the Nut (20) is formed. This valve seat (52) is one acted upon in the vertical direction movable valve part (53), the one in the closed state of the flush valve (49) on the valve seat (52) rests with a seal (54). This seal (54) is guided in a sealing seat (55) which is inside the valve part (53) runs. The seal (54) lies with one of the Seal seat (55) protruding outer part (56) on the valve seat (52) at the point where the outer part (56) protrudes from the seal seat (55). The valve part (53) with one extending below the sealing seat (55) Lower part (57) into an interior enclosed by the valve seat (52) protrude into it. The lower part (57) has a conical one Outer surface (58), the slope of a corresponding conical Corresponds to the inner surface (59) with which the valve seat (52) the mother (20). If the seal becomes less elastic (54) the two conical surfaces (58, 59) lie on top of each other, see above that a deformation of the seal (54) is limited the distance between the two conical surfaces (58, 59) from each other is specified. In addition, this design of the flush valve (49) ensured that the total length of the drain fitting (3) changes only to a limited extent.

The valve part (53) is connected to a plug connection (60) attached to him end (61) of the extension (30). By Lifting the extension (30) the valve part (53) from the valve seat (52) lifted off so that the flushing valve (49) is open and the flushing water (48) from the interior (2) through the open Flush valve (49) can flow into the suction line (26). Here the extension (30) is moved with respect to the suction pipe (29).

For this purpose, the extension (30) with a flush button (62) connected, which protrudes from the cover (9) of the housing (1). A bell (63) is firmly connected to this flush button (62), which encloses an interior (64) that connects between the gap (50) and the interior (41) of the suction pipe (29) manufactures. This interior (64) is largely cylindrical Cladding part (65) and a bell bottom (66) limits the with the flushing valve (49) closed with the cover (9) approximately in one Level runs. The suction pipe (29) protrudes into this interior space (64) with a taper (67) that extends towards the Main part (39) of the suction pipe (29) by a truncated cone Extension (68) extended. The bell is in the taper (67) (63) with a cylindrical unit (69), which runs through the center of the interior (64) approximately parallel to the casing part (65) extends. This cylindrical unit (69) consists of at least two wings (71, 72) extending from a central axis (70), the with their outer edges (73, 74) facing away from the central axis in the taper (67) are guided. On the central axis (70) is the Rinsing head (62) attached.

The taper (67) ends at a distance (75) from the bell bottom (66), which is large enough to move the bell (63) towards the To be able to lower the interior (2). About this distance (75) through the gap (50) rising air into the interior (41) of the Suction tube (29) sucked. On one in the interior (64) of the Bell (63) protruding upper end (76) of the taper (67) an edging (77) is attached, which is at an angle of about 180 ° approximately plane-parallel to an outer surface facing it (78) the taper (67). The edging (77) is with the upper end (76) connected via an annular connecting piece (79), attached with a connector (80) at the upper end (76) is. This connecting piece (79) is in the form of a truncated Cone slightly inclined towards the edging (77), so that, if necessary, in the direction of the upper end (76) advancing water drops over the connecting piece (79) in the direction can run on the edging (77) without them in the Penetrate interior (41).

Between the taper (67) and the edging (77) there is an approx cylindrical annular space (81) into which a sealing water tank (82) protrudes with an annular inner wall (83). This sealing water tank (82) is firmly on the flush valve (49) facing away from the upper end (84) of the extension (30). For this purpose protrudes from an upper end (84) Bottom (85) of the sealing water tank (82) an annular Indentation (86), on the outer wall of the extension (30) is fastened with a plug connection (87).

One runs approximately concentrically to the annular inner wall (83) annular outer wall (88) of the sealing water tank, which is fixed is connected to the floor (85). In this way, the Sealing water tank (82) one from the inner wall (83), the bottom (85) and the outer wall (88) limited container space (89) into which the bell (63) with its jacket part (65) protrudes. The diameter of the jacket part (65) is measured so that the edging (77) inside the interior (64) of the bell (63) runs and between the edging (77) and the jacket part (65) the bell (63) has an annular gap space (90), the cross section of which is large enough to be from the vacuum generator (42) generated exhaust air flow (91) from the annular space (81) in the direction to be able to suction on the interior (41) of the suction pipe (29).

This exhaust air flow (91) is from the gap (50) through an annular space (92) sucked in by the annular inner wall (83) on the one hand and the outer surface (78) of the taper (67) on the other is formed. This annular space (92) stands with the gap (50) in connection. The ascending through the annular space (92) Exhaust air flow (91) on a protruding into the annular space (81) The upper edge (93) of the inner wall (83) is deflected and into an annular space (94) sucked by the inner wall (83) of the sealing water tank (82) on the one hand and in the sealing water tank (82) protruding edging (77) is formed on the other hand. In this annular space (94) reaches the exhaust air flow (91) the sealing water tank (82) protruding lower end (95) of the Edging (77) and is there again in the from the jacket part (65) the bell (63) on the one hand and the edging (77) on the other limited gap space (90) directed. In this gap room (90) the exhaust air flow (91) inside the bell (63) rises Direction on the bell bottom (66) and is at the top (76) of the taper (67) deflected towards the interior (41) of the suction pipe (29).

This guidance of the exhaust air flow (91) presupposes that in the sealing water tank (82) there is no sealing water (96). This sealing water (96) is used to fill a sealing water tank (82) To create an odor trap, with the help of which the sewage system (28) penetrating into the interior (41) via the exhaust air line (37) Exhaust air is prevented from entering the gap (50) and to get into the toilet bowl (4). For this purpose is the sealing water (96) when the sealing water tank (82) is full at a level (97) so that both the annular space (94) and the Gap space (90) at least partially filled with sealing water (96) are and the lower end (95) of the edging (77) in the sealing water (96) protrudes. In this filled state of the sealing water tank (82) there can be an exhaust air flow (91) between the gap (50) on the one hand and the interior (41) of the suction pipe (29) not occurrence.

To such an exhaust air flow (91) through the sealing water tank (82), the level (97) of the sealing water (96) be lowered at least so far that the lower end (95) above a level (98) lowered in the sealing water tank (82) ends. The level (97) is lowered with the aid of a displacer (99), which is lowered into the sealing water tank (82) can be while standing in the sealing water tank (82) Seal water (96) displaced from the seal water tank (82). To For this purpose, the displacement body (99) has a volume that corresponds to the amount of sealing water (96) to be displaced. This Displacer body (99) is directly on the jacket part (65) the bell (63) is molded and has a substantially U-shaped Cross section, the inner leg (100) of the jacket part (65) of the bell (63) is formed, with which the inner leg (100) largely flat parallel outer leg (101) is connected via a yoke (102). This yoke (102) runs largely plane-parallel to the bottom (85) of the sealing water tank (82), while the outer leg (101) largely runs plane-parallel to the annular outer wall (88). Here is between the outer leg (101) and the annular Outer wall (88) formed a gap space (103) through which the displaced sealing water (96) rise from the sealing water tank (82) and is delimited by an annular outer wall (88) upper edge (104) in the interior (2) of the housing (1) can pour. In addition, it is also possible that the Sealing water (96) when lowering the displacer (99) in the annulus (94) rises and over the upper edge (93) of the annular Inner wall (83) of the sealing water tank (82) in the gap (50) pours. The displaced sealing water runs through the gap (50) (96) via the suction line (26) into the toilet bowl (4) from. The ring-shaped can be dimensioned accordingly Inner wall (83) on the one hand or the annular outer wall (88) on the other hand, influence whether the repression the sealing water (96) towards the interior (2) or in the direction of the gap (50). Depending on The choice made is either the annular outer wall (88) formed lower than the inner wall (83) or vice versa.

The sinker (99) is lowered in such a way that the bell (63) moved towards the interior (2) becomes. The sealing water is thereby through the displacement body (99) (96) displaced from the sealing water tank (82). After the repression the sealing water (96) is the bell (63) by a spring (105) raised again, which is on the one hand at the upper end (76) the taper (67) and on the other hand on the interior (64) supports facing inner surface of the bell bottom (66). That feather (105) is designed as a conical spiral spring, which at the return of the bell (63) lowered into the interior (2) works as a compression spring. If the bell (63) from the interior (2) is pulled out over the level of the cover (9), the Spring (105) for the purpose of returning the bell (63) as one Tension spring.

This happens when after opening the purge valve (49) this should be closed again. For the purpose of opening the flushing valve (49) is connected to the extension (30) Lift valve part (53) off valve seat (52). The raise the extension (30) is done with the help of the bell (63). On this is the sealing water tank via the displacer (99) (82) coupled. For this purpose, the sealing water tank has (82) on its outer wall (88) at least two diametrically arranged Coupling parts (106) acting as one towards the displacer (99) protruding projection (107) are formed. Under this projection (107) the displacer body (99) is included an upper edge (108) formed on the outer leg (101). If the bell (63) and thus the displacement body (99) from the Pulled out the cover (9), the upper edge (108) grips under the Projection (107) and lifts the sealing water tank (82) and with it the extension (30) on the connector (87) is firmly connected to the sealing water tank (82). On this way the valve part (53) that is fixed to the extension (30) is connected to the valve seat (52) so that the purge valve (49) opens. Then the bell (63) is back lowered towards the interior (2) so that the displacer (99) from the sealing water tank (82) in the area of Coupling part (106) is uncoupled. Because of its own weight the extension firmly connected to the sealing water tank (82) (30) the valve part (53) lowers again onto the valve seat (52) and thus closes the flush valve (49). From the yoke (102) of the sinker (99) protrudes a ring (109) towards the Sealing water tank (82). This ring (109) dips with its Edge (110) facing away from the yoke (102) into a residual amount of water (111) and in this way prevents air from the housing (1) is sucked in through the gap (103) which is between the outer Leg (101) and the annular outer wall (88) formed is.

It is also possible to have the sealing water tank (82) with walls (300,301) to be provided in the cross section of the sealing water tank (82) taper towards each other in the direction of the flushing valve. In addition, the walls (302, 303) of the displacement body also run (99) conical towards the flushing valve (49). Here the walls (302,303) essentially run the walls (300,301) plane parallel. Finally, the edging (77) is as a conical wall (304) is formed which is essentially runs parallel to the walls (301,303) and in the between these two walls (301, 303) existing annular space (94) protrudes. This conical formation of the wall (300,301; 302,303; 304) has the great advantage that even with small Movements of the displacer (99) towards the flush valve (49) relatively large portions of the in the sealing water tank (82) standing sealing water are displaced. They also come off the conical walls (302,303) comparatively slightly from the conical walls (300, 304) adjacent to them, if after lowering the displacer (99) this with the participation the spring tension of the spiral spring (105) is raised again is to the exhaust air sucked in through the drain pipe (13) Passage towards the suction pipe (29) possible.

The filling of the sealing water tank (82) can be done with the help of a bypass line (114) take place with the sealing water tank (82) connects a rinse water inlet (115) through which the rinse water (48) is introduced into the interior (2). However, it is also possible to fill the entire interior (2) with rinse water (48) by first rinsing the water in the Sealing water tank (82) is introduced. After this is filled has been, the rinse water (48) occurs through an overflow of the Sealing water tank (82) into the interior (2).

The drive (43) is controlled with the help of a reed contact (116) via a control line (117) with the drive (43) is connected. This thatched contact (116) is made by a magnet (118) actuated, which is embedded in a float (119). This float (119) floats in the sealing water tank (82). As soon as the sealing water (96) is lowered in the sealing water tank (82) the float (119) sinks in the sealing water tank (82) so that the magnet (118) can actuate the reed contact (116). For this purpose the thatched contact (116) is inside the suction tube (29) in the amount of the lowered in the sealing water tank (82) Barrier water level attached. After the reed contact (116) is actuated has been, the drive (43) via a supply line (120) powered so that the vacuum generator (42) can start up and suck in air from the sealing water tank (82) can. It pushes the sucked-in air through the exhaust air line (37) into the sewage system (28).

To ensure that the reed contact (116) functions properly can, the magnet (118) and thus the float (119) does not have to only in the vertical direction with respect to the thatched contact (116) aligned, but the thatched contact (116) must also in the through the plane running exactly opposite the magnet (118) lie. In order for the exact alignment of the sealing water tank (82), in which the float (119) with the enclosed in it Magnet (118) floats in, opposite the suction pipe (29) to which the thatched contact (116) is attached, can be made between the suction pipe (29) and the extension (30) on the the sealing water tank (82) is attached, an adjustment (305) intended. This adjustment is arranged in the gap (50) between the suction pipe (29) on the one hand and the extension (30) on the other hand. This adjustment (305) is in shape of sliders (306,307,308) formed in a predetermined Apply distance (309) to each other. Here are the sliders (306,308) on one in the gap (50) facing inner surface (310) of the extension (30), while the slider (307) on one in the gap (50) facing External surface (311) of the suction pipe (29) is attached. Between the two outer sliders (306,308) is a distance (309) provided, the width of the width of the slider (307) corresponds. If the extension (30) with the attached on it Sealing water tank (82) is plugged onto the suction pipe (29), slides the slider (307) into the distance (309) between the two sliders (306,308) is provided. In this Alignment is ensured that the thatched contact (116) exactly opposite the magnet (118) enclosed in the float (119) lies.

The supply line (120) can, for example, through the connector (31) in the direction of that with the exhaust air line (37) connected connecting end (35) of the suction pipe (29) are guided. It is led hermetically out of the end (36) and in the direction passed to a power supply (121), which is in a for this purpose provided recess (122) of the housing (1) is attached. This Power supply (121) is connected to the public via a cable (123) Network connected.

Before using the toilet bowl (4), first the displacer (99) lowered into the sealing water tank (82) and in this way the sealing water (96) from the sealing water tank (82) ousted. This causes the float (119) to sink in the sealing water tank (82), so that the magnet (118) the reed contact (116) can operate. Then the drive (43) starts, so that exhaust air from the toilet bowl (4) over the gap (50) and the interior (41) of the suction pipe (29) can be suctioned off.

The spring (105) presses it together with the sealing water tank (82) lowered bell (63) back to its starting position, in which in the area of the coupling part (106) to the sealing water tank (82) is coupled. For the purpose of flushing Bell (63) pulled out of the cover (9). Together with that the displacement water tank (82) coupled to the displacer (99) the extension (30) is also raised, so that the valve part (53) leaves the valve seat (52). This will make the purge valve (49) opened so that the rinse water (48) in the suction line (26) can occur. After the rinse has been carried out, it lowers Extension (30) and the valve part (53) connected to it in Direction on the valve seat (52), so that the flush valve (49) is closed.

It is also possible to actuate the bell (63) using one Make solenoids (124). This way of operating the bell (63) is particularly preferred for such cisterns, which are built into a wall.

It is also conceivable to insert the power supply unit (130) into the housing (1) to be laid below the cover (9). That way, with the cover (9) and the power pack (130) are removed from the housing (1) will.

For further adjustment of the waste set (3) inside the interior (2) it is possible to determine the position of the drain connector (13) and thus the valve seat (52) compared to the one with the flush button (62) connected displacer (99) precisely. This displacement body (99) can only be used within the scope of the bell (63) feasible movements are moved. That way it is conceivable that the displacer (99) with its yoke (102) is not so far in the sealing water tank (82) penetrates that enough Barrier water (96) is displaced from the barrier water tank (82). Since the position of the bell (63) from the cover (9) is predetermined, can with regard to the displacement body (99) only the sealing water tank (82) together with the extension (30) and the valve seat (52) be aligned. For this purpose the valve seat (52) can be varied in terms of its height from the ground that a more or less large number of spacer rings (23) between the nut (20) and the bottom (7). If the displacer (99) with its yoke (102) is not up to to the full depth in the sealing water tank (82) must, by choosing an additional spacer ring (23) be ensured that the sealing water tank (82) in the direction is lifted onto the cover (9).

If the suction tube (29) is not within the extension (30) is performed, the bell (63), which must always be maintained can be given a different training (Figure 16). she receives under the bell bottom (66) two entrances (197, 198), from one for the extension (30) and the other for the Suction pipe (29) is provided. Nevertheless, with the bell (63) the displacement body (99) can be coupled, which in the The sealing water tank (82) protrudes.

The valve seat (52) is fastened to the drain socket (13) by protrudes through the bottom (7) of the housing (1). This drain connector (13) is enclosed by an annular space (312) into which the suction pipe (29) via a connecting line (199) and the connector (31) lead into. The connector (31) is connected to the sewage pipe (27) connected. The connecting line (199) and the connector (31) the annular space (312) in the form of Rings (200, 201), which are with access openings (202, 203) in the Open the annulus (312). This protrudes with the exhaust air spigot (13) through the opening (15) at the bottom (7) and is with the help of a nut (20) attached to the bottom (7) of the housing (1).

The bell (63) and the displacement body (99) connected to it are in the direction of the suction pipe (29) within the housing (1) slidably mounted. For actuating the displacer (99) an actuating rod (204) projects through the cover (9), at the end protruding from the cover (9) is a flush button (62) can be attached. At the bell (63) is in the area the input (197) the extension (30) via a coupling (106) coupled so that the flush valve (49) by lifting the bell (63) can be opened.

When the flush valve (49) is closed, the vacuum generator sucks (42), which is fixed in the suction pipe (29), the exhaust air through the Drain pipe (13), which is connected to the toilet bowl via the suction line (26) (4) is connected. This exhaust air passes through the extension (30) in the interior (64) of the bell (63) and will through the sealing water tank (82) emptied from the sealing water the suction pipe (29) sucked. From there, the exhaust air passes through the Connection line (199) in the ring (200) and passes through the access opening (202) into the annular space (312). Got out of this the exhaust air via the access opening (203) into the ring (201) which they pushed out towards the connector (31) becomes. This is connected, for example, to the sewage system (28) that the exhaust air picks up.

An odor trap can also be taken with the help of other measures be suitable, the interior (41) of the suction pipe (29) from the sewage system (28). For this purpose For example, a solenoid valve (127) can be provided in the interior (41) of the suction pipe (29) is provided. This solenoid valve (127) can be provided with an electromagnet (207), which is controlled via electrical lines (208, 209). With this Electromagnet (207) is one between two cover plates (210, 211) connected airtight end plate (212) connected between the two cover plates (210, 211) are pivotally mounted is. One each extends through the cover plates (210, 211) Bore (213, 214), the cross section of which is approximately the connecting piece (31) corresponds. In the open state of the solenoid valve (127) with the two holes (213, 214) one through the end plate (212) extending bore (215) in register, so that a connection between the interior (41) and the sewage system (28). For the purpose of closing the solenoid valve (127) with With the help of the electromagnet (207) the end plate (212) between the two cover plates (210, 211) pivoted until the end plate (212) closes the two bores (213, 214).

In addition, however, a solenoid valve (128) can also be used at the end (36) of the suction pipe (29) can be provided. This solenoid valve (128) can be designed as a conventional solenoid valve, the one Flow controls. It is provided in the exhaust air line (37) and blocks this when the vacuum generator (42) is switched off the interior (41) of the suction pipe (29). Closes he provided at the end (36) of the connector (31) aperture (129), so that a gas-tight shut-off of the interior (41) opposite the sewage pipe (27) comes about.

The control of the solenoid valves (127, 128) can be in accordance with the control of the vacuum generator (42). To this A relay arrangement can be used within the suction pipe (29) (131) can be provided, with the aid of which both the drive (41) and the solenoid valves (127, 128) can also be controlled. It is conceivable to carry out the control with the help of the reed contact (116).

To guarantee a smooth function of the reed contact (116) To be able to, this must with respect to the magnet actuating it (118) must be precisely aligned. For this purpose it is possible to Transition from the main part (39) of the suction pipe (29) into the extension (68) the taper (67) to provide a plug connection (126). The extension (68) can be are turned with the taper (67) relative to the main part (39), so that an exact alignment of the reed contact (116) opposite the position of the magnet enclosed in the float (119) (118) is possible.

To lower the level in the sealing water tank (82) (97) of the sealing water (96) to prevent the displacer (99) the sealing water (96) in the gap space (90) and thus creates the danger that the sealing water (96) into the interior (41) and thus flows in the direction of the vacuum generator (42), locks (125) are provided within the gap space (90) either on an inner wall of the casing part (65) of the bell (63) or on an outer wall pointing into the gap (90) the edging (77) can be provided. These locks (125) can be in the form of at least one ring or several Extend partial rings through the gap (90) so that an ascent the sealing water (96) in the gap space (90) excluded is that, however, there is still enough free space for the exhaust air from the sealing water tank (82) towards the interior (41) of the suction pipe (29).

On the other hand, can facilitate the outflow of sealing water (96) from the sealing water tank (82) on the annular inner wall (83) of the sealing water tank (82) an overflow (133) is provided be in the area of the upper edge (93) of the annular Inner wall (83) is lowered. When lowering the displacer (99) the displaced quantity of sealing water pours out (96) through the overflow (133) into the extension (30) through which it flows towards the toilet bowl (4).

The flush valve (49) can be controlled with the aid of an annular Float (313) are made, the extension ring-shaped (30) impossible. There is an extension between one (30) facing inner surface (314) of the float (313) and an outer surface (315) of the extension facing it (30) a game (316) is provided so that the float (313) easily with respect to the extension (30) on its outer surface (315) can be moved along. The float (313) is over one Clamping ring (317) coupled to the extension (30). This Clamping ring (317) adheres to the outer surface (315), so that it is regarding the control expected by float (313) the extension (30) higher or lower on the outer surface (315) can be adjusted.

The float (313) floating in the rinsing water acts on it its top edge (318) facing the flush button (62) has the clamping ring (317) on its lower edge facing the flushing valve (49) (319). In this way it is achieved that in the flushing of the Float (313) floating in flushing water via the clamping ring (317) the extension (30) lifts and in this way the flush valve (49) is opened.

At a relatively large distance from the flush valve (49) Clamping ring (317) in an upper position on the outer surface (315) of the extension (30) attached. In this top position the float (313) controls a comparatively short opening time the flush valve (49), opposite one of the flush valve (49) facing lower position of the clamping ring (317).

For this purpose, the float (313) has a buoyancy force, which is less than that associated with the extension (30) Movable part of the waste set (3). In this way it is achieved that the opened flush valve (49) due to the weight of the movable part is closed again. The opening of the Flush valve (49) depends on the buoyancy of the float (313) and the place where the clamping ring (317) on the extension (30) is attached. According to the water absorption of the Toilet bowl (4) the buoyancy of the float (313) be dimensioned such that the exiting from the flushing valve (49) The amount of rinse water, for example, is either 6 liters or 9 liters.

To ensure even control of those emerging from the flushing valve (49) Rinse water quantity until the housing is completely emptied (1) To be able to guarantee is in the lower area of the extension (30), but above one with the flush valve (59) open upper position of the valve part (53) a float housing (320) is provided, into which the float (313) dips after a significant part of the rinse water through the housing (1) Has left the flushing valve (4). Since this float housing (320) with an inner wall (321) and an outer wall (322) opposite the interior (2) of the housing (1) is separated, remains in the Float housing (320) are also the rinse water when in the remaining interior (2) the rinse water level is already below a Flush button (62) facing the upper edge of the float housing (320) fell. In this way it is achieved that regardless of Level of the flushing water inside the float's interior (2) (313) developed a constant buoyancy.

For this purpose, the float housing (320) surrounds the ring Waste set (3). It is between the inner wall (321) and a gap (324) is provided on the outer surface (315) of the extension, which is large enough so that the extension (30) is not affected move lengthways from the float housing (320) can. Between the outer wall (322) and the inner wall (321) extends an interior (325) that is large enough to the Float (313) record. It also extends through the interior (325) is a coil spring (327), which on the one hand with its upper end (328) on the clamping ring (317) and on the other hand with its lower end (329) on a flush valve (49) facing housing base (330). This coil spring (327) is fitted even in their tense state when the swimmer (313) a small preload is inserted into the float housing (320). This buoyancy of the float (313) is sufficient to also with an opening force slightly applied to the flush button (62) to be able to open the flushing valve (49). On the other hand, it is enough the weight of the movable part of the waste set (3) against the tension of the spiral spring (327) the flush valve (49) to be able to close, the shutter speed below Taking into account the tension developed by the spiral spring (327) is controlled by the float (313).

The housing bottom (330) faces the bottom (7) of the housing (1) a height that is dimensioned at least so that a perfect Closing the flush valve (49) is guaranteed. To For this purpose, one must protrude into the interior (325) Lower edge (331) of the float (313) and the case bottom (330) A safety margin should be provided when the purge valve (49) is securely closed. The float housing (320) is about Drain holes (370) in the housing base (330) or its immediate Are arranged nearby, emptied. About the size of these drain holes (370) becomes the outflow rate and thus the Closing speed of the purge valve (49) controlled.

The float housing (320) is opposite the bottom (7) of the housing (1) supported. For this purpose, at least three are above the Circumference of the float housing (320) approximately evenly distributed Legs (332, 333) are provided. These legs (332,333) are towards on the waste set (3) on the float housing (320) attached so that they are applied accordingly Are able to make movements towards the waste set (3) or in the opposite direction.

These legs (332, 333) are on their float housing (320) opposite ends (334) supported on the bottom (7) of the housing (1). For this purpose, pockets (369) are provided on the harvester (7), the one extending in the direction of the drain fitting (3) Have opening (335). Reaches into the opening (335) one end piece (336) angled away from the drain fitting (3) in each case one leg (332,333).

The pockets (334) are attached to the floor (7) as mounting pieces formed with a hook-shaped roof part (337) are provided, which points in the direction of the drain pipe (13). The end (336) engages under this roof part (337) a leg (332,333) if that leg (332,333) is not in its is deflected starting position. Around the float housing (320) to release from the floor (7), the legs (332, 333) become elastic in Bent towards the drain fitting (3) so that the end (336) from the hook-shaped roof part (337) is released. Now the entire float housing can cover the interior (2) of the housing (1) can be removed. The bag (334) can act as a flush valve (49) concentrically surrounded collar (338), the hook-shaped roof part acted upon by a large number of legs (333, 332) becomes.

In addition, the float housing (320) can also be compared to the Nut (20) must be adjusted, with which the drain connector (13) on the floor (7) of the housing (1) is attached. In this case the Nut (20) evenly distributed on its outer circumference (339) Receiving slots (340) in each of which one leg (332, 333) of the Float housing (320) is anchored. In this case, stretch the receiving slots (340) from the outer periphery (339) of the Nut (20) in the direction of the drain connector (13). The in the Underneath the receiving slots (340), engage the legs (332, 333) with an angled end (341) one formed on the nut (20) Collar (342) on its underside facing the floor (7) (334). In this way it is necessary to use the elastic Legs (332, 333) in a direction away from the drain connection (3) to bend in order to be able to lift it off the nut (20). To facilitate this detachment of the legs (332, 333) from the collar (342), is a bearing below the collar on the nut (20) (344) formed on which a rotating ring (345) around itself through the waste set extending center axis rotatably mounted is. This rotating ring has an asymmetrical outer boundary (346). From this rise in the direction of the legs (332,333) elevations (347) out with their farthest from the center line removed topmost points (348) when turning the rotating ring (345) act on one leg (332, 333) around its central axis and pushes this out of the receiving sleeves (340). In This pressed out position of the legs (332, 333) can do that Float housing (320) are lifted off the nut (20).

When using collector motors for the drive (43) could an explosion of the digested gases due to the spark formation at the collector in the sewage pipe (27) and thus also in the sewage system (28) arise. In order to limit such an explosion to the smallest space, are at least below the drive (43) in the direction of the sewage system (28) security grille (219) provided the in the event of a deflagration of flammable gases, which have the same function as the grille of a miner's lamp. Conveniently such security grilles (219) are also on provided on both sides of the drive (43).

The advantage of this waste set (3) is that it can also with little difficulty with a suction toilet (349) Can be used. This is the odor trap amount of residual water (350) in the lower part of the toilet bowl (4). This amount of residual water has an upper water level (351) whose height is predetermined by a deflection edge (352) is one in when flushing the toilet bowl (4) the amount of water (353) entering the toilet bowl (4) increases must, so that it gets into a suction nozzle (354), which immediately connects to the deflection edge (352). This deflection nozzle (354) in the direction of the flowing into the sewer (27) Water bounded by a narrow point (355), behind which an outflow space (356) towards the sewage pipe (27) enlarged. Because of this constriction (355), the Toilet basin (4) running water jammed so that through the entering amount of water (353) an upper chamber (357) completely fills, in which the entering amount of water (353) above the deflecting edge (352) is deflected in the direction of the suction supports (354) becomes. Due to the occurrence behind the constriction (355) Volume increase the water from the toilet bowl (4) aspirated.

In this upper chamber (357) opens the connector (31), the extends eccentrically through the drain connector (13). It is in this case, the connector (31) just formed and emerges from the lower end (25) of the drain connector (13). Here runs the connector (31) substantially parallel to one extending through the drain set (3) center line. she extends through a distribution space (358) into which the rinsing liquid enters through the drain pipe (13) and from there they evenly over the entire toilet bowl (4) along it Randes (359) is distributed.

The connector (31) opens with its connecting end (35) in one Suction opening (361), which is provided in a wall (362), through which the distribution space (358) is separated from the upper chamber (357) becomes. The connection sleeve (360) surrounds concentrically the suction opening (361). This suction opening (361) lies in a straight line Direction below the connector (31).

The connection sleeve (360) carries an elastic connection piece (363). This connection piece (363) can be designed as a double sleeve be the one facing the connecting sleeve (360) lower end embraces this and with its opposite upper end End of the connecting end (35) of the connecting piece (31).

This arrangement of the suction opening (361) has an essential one Advantage, which is that the waste set (3) is very light can be installed on a suction toilet (349). To this Purpose is first the connector (31) with its connection end (35) pushed into the elastic sleeve (360), which on the Suction opening (361) is placed. Then the housing (1) with its opening (15) slipped over the suction pipe (29) is connected to the connector (31). Thereupon the housing (1) in the usual way with screws and not shown Nuts attached to the toilet bowl (4). Now with Help the mother (20) of the drain pipe (13) with which it extending connector (31) attached to the housing base (7) will. So that is the location of the trained on the mother (20) Valve seat (52) set. Regarding this valve seat (52) the valve part (53) attached to the extension (30) is aligned, by the extension (30) over the suction pipe (29) is pushed.

Due to the negative pressure occurring in the upper chamber (357) the water level in the sealing water tank (82) is increased by one level (369) raised to the water level in the toilet bowl (4) standing odor trap corresponds when the water from the upper chamber (357) through the constriction (355) towards the Waste water pipe (27) runs off. For this reason, care must be taken be that the sealing water is not in through the suction pipe (29) Direction to the vacuum generator (42) and its drive (43) expires. For this purpose, the suction pipe (29) is above the sealing water tank (82) towards the cover (9) of the housing (1) with its upper edge (364) pulled up so far that a water column building up due to the negative pressure (365) ends with its upper end (366) below the upper edge (364). For this purpose, the sealing water tank (82) in one Area arranged within the housing (1), which is approximately in half Height of the interior (2) enclosed by the housing (1). Because of this arrangement of the sealing water tank (82) can taper (67) are formed very long up to the lid (9), so that in any case the upper end (366) of the water column (365) below the upper edge (364). In addition, below the bell (63) and above one in the sealing water tank (82) standing level (97) of the sealing water (96) a compensation room (367) can be provided, which is a substantial part of the take up the sealing water drawn into the sealing water tank (82) can. This compensation space (367) is towards the cover (9) above the edging (77) between the taper (67) and the jacket part (65) provided. This prevents that when rinsing the suction toilet (349) the sealing water (96) in the suction pipe (29) can penetrate.

Due to the pluggable design of the waste set (3) the housing (1) easily on the toilet bowl (4) of a suction toilet (349) can be attached. Both the attachment of the flush valve and the extension (30) can also be arranged if the housing (1) is already on the toilet bowl (4) is attached.

In order to prevent leaks in the rinsing water (115) to avoid that the rinse water (48) uncontrolled from the interior (2) of the housing, for example, under its cover (9) emerges, care is taken to ensure that the flushing valve (49) is open is when an upper level of the rinse water (48) in the interior (2) due to an uncontrolled inflow of rinsing water (48) is exceeded. For this purpose is at this top level the rinse water (48), which must never be exceeded, an emergency float (368) installed to open the purge valve (49) ensures to continue in the interior if necessary (2) incoming flushing water (48) through the flushing valve (49) into the Derive toilet bowl (4) if the amount of the incoming Flushing water (48) through the annular space (94) into the gap (50) between Extension (30) and suction pipe (29) are not drained sufficiently can be. This emergency swimmer (368) becomes more appropriate Way connected to the extension (30). There is an attachment of the emergency swimmer (368) on the annular outer wall (88) of the sealing water tank (82) has proven to be useful. This emergency float (368) has such a great buoyancy equipped that he is able to move the entire Part of the drain fitting (3) against that on the flush valve (49) open closing forces.

Claims (133)

1. A flushing cistern for a toilet flush with a water discharge flow to a toilet pan (4) which is controlled by a flushing valve (49) which projects through a water supply (48) disposed above it in a housing (1) with an extension (30) which is in the form of a tube and through the internal space (41) of which contaminated air is sucked away from the toilet pan (4) by a reduced pressure-generating means (42) by way of a suction removal tube (29) which extends through the water supply (48) and which is connected to the reduced pressure-generating means (42) and which leads to at least one extractor receiving the contaminated air which is sucked out of the toilet pan (4), characterised in that the extension (30) and the suction removal tube (29) are in the form of tubes which are separated from each other and the tubes have a communication which is controllable by way of a barrier volume of water (96) at an upper end of the extension (30) projecting out of the water supply and with the flushing valve (49) form a discharge fitting (3) which is fixed in an opening (15) which leads out of the housing (1) and the barrier volume of water (96) is accumulated in a barrier water container (82) projecting out of the water supply (48) in the separated condition of the communication and is reduced to open the communication.
2. A cistern according to claim 1 characterised in that the opening (15) is provided in a bottom (7) which closes the housing (1) downwardly in a perpendicular direction.
3. A cistern according to claim 1 or claim 2 characterised in that for the water discharge flow there is provided a discharge connection (13) which is fixed to the bottom (7) of the housing (1) and which forms the lower part of the discharge fitting (3).
4. A cistern according to claim 3 characterised in that the discharge connection (13) is screwed to the bottom (7) by way of a sealing system (14).
5. A cistern according to claim 3 or claim 4 characterised in that the suction removal tube (29) is disposed eccentrically in the region of the discharge connection (13).
6. A cistern according to one of claims 1 to 5 characterised in that provided on the discharge connection (13) is an annular valve seat (52) of the flushing valve (49) which in the closed condition of the flushing valve (49) is acted upon by an annular valve portion (53) which is fixed to a lower end (61) of the extension (30), which end is towards the flushing valve (49).
7. A cistern according to one of claims 1 to 6 characterised in that a reduced pressure-generating means (42) and its drive (43) are mounted within the suction removal tube (29).
8. A cistern according to claim 7 characterised in that the reduced pressure-generating means (42) has a time control.
9. A cistern according to one of claims 1 to 8 characterised in that the suction removal tube (29) on the one hand and the extension (30) on the other hand are interconnected by way of a bell (63) which projects above them at their upper ends and which with its lower edge dips into a barrier volume of water (96) which gas-tightly closes off its internal space (64).
10. A cistern according to claim 9 characterised in that the barrier volume of water (96) is formed by the flushing water supply (48).
11. A cistern according to claim 9 characterised in that the barrier volume of water (96) is accumulated in a barrier water container (82) connected to a flushing water feed (115) for feeding flushing water (48) into the housing (1).
12. A cistern according to claim 11 characterised in that the barrier water container (82) is connected to a by-pass (114) of the flushing water feed (115).
13. A cistern according to one of claims 1 to 12 characterised in that the extractor is in the form of a contaminated air filter (38).
14. A cistern according to one of claims 1 to 12 characterised in that the extractor is in the form of a contaminated air system to which the suction removal tube (29) is connected with its lower end (36) which is passed out of the housing (1).
15. A cistern according to one of claims 1 to 14 characterised in that the extractor is in the form of a sewage system (28) to which the suction removal tube (29) is connected with its lower end (36) which is passed out of the housing (1).
16. A cistern according to one of claims 1 to 15 characterised in that the barrier volume of water (96) is in the form of a central odour trap for at least two toilet pans (4).
17. A cistern according to one of claims 1 to 16 characterised in that the barrier water supply (96) is accumulated in a barrier water container (82) which concentrically surrounds the upper end (76) of the suction removal tube (29).
18. A cistern according to claim 17 characterised in that the suction removal tube (29) opens centrally into the barrier water container (82).
19. A cistern according to claim 18 characterised in that at its upper end (76) the suction removal tube (29) has a wall portion which is diverted through 180° into a flanged-over portion (77), between which and an inside wall of the bell (63) there is a gap (90) which when the barrier water container (82) is emptied communicates with the extension (30).
20. A cistern according to claim 19 characterised in that provided in the gap (20) is at least one barrier means(125) for preventing a rise of the barrier water (96) in the gap (90).
21. A cistern according to claim 19 or claim 20 characterised in that provided between the flanged-over portion (77) and an outer periphery of the suction removal tube (29) is an annular space (81) into which the barrier water container (82) projects with its annular inside wall (83) and in which, when the suction removal tube (29) is closed, the barrier water (96) goes to above a lower end (95) terminating the flanged-over portion (77).
22. A cistern according to one of claims 19 to 21 characterised in that provided between the annular inside wall (83) of the barrier water container (82) and the outer periphery of the suction removal tube (29) is an at least partially annular chamber (92) which is in communication on the one hand with the extension (30) and on the other hand by way of an upper edge (93) of the inside wall (83) with the barrier water container (82).
23. A cistern according to one of claims 19 to 22 characterised in that the flanged-over portion (77) is connected to the suction removal tube (29) by way of an annular connecting portion which in the form of a truncated cone has a slight inclination in a direction towards the flanged-over portion (77).
24. A cistern according to claim 23, characterised in that the flanged-over portion (77) forms with the annular connecting portion (79) a structural unit which is fixedly fitted on to the upper end (76) of the suction removal tube (29).
25. A cistern according to one of claims 11 to 24 characterised in that there is provided a displacement body (99) which can be moved downwardly into the barrier water container (82) and which displaces barrier water (96) out of same.
26. A cistern according to one of claims 11 to 25 characterised in that at its lower edge the bell (63) is in the form of the displacement body (99) which is displaceable into the barrier water container (82) and whose annular cross-section substantially corresponds to that of the barrier water container (82).
27. A cistern according to claim 26 characterised in that the displacement body (99) is of a U-shaped cross-section whose inner limb (100) is formed by an outer wall delimiting the bell (63) and whose outer limb (101) extends substantially parallel to an outer wall (88) of the annular barrier water container (82) and whose yoke portion (102) extends substantially horizontally and in plane-parallel relationship with a bottom (85) of the barrier water container (82).
28. A cistern according to claim 26 characterised in that both the barrier water container (82) and also the displacement body (99) are each of a cross-section which decreases conically in the direction of the displacement body (99) which moves downwardly into the barrier water container (82).
29. A cistern according to claim 28 characterised in that both the barrier water container (82) and also the displacement body are in the form of truncated cones.
30. A cistern according to claim 29 characterised in that the flanged-over portion (77) is in the form of a truncated cone which enlarges in a direction towards the barrier water container (82) and whose inclination corresponds to that of the conical barrier water container (82).
31. A cistern according to claim 28 characterised in that only the annular inside wall (83) of the barrier water container (82), the wall adjacent thereto of the displacement body (99) and the flanged-over portion (77) are each conically inclined in the direction of the downwardly moving displacement body (99) while the oppositely disposed outside walls both of the barrier water container (82) and also the displacement body (99) extend in substantially mutually plane-parallel cylindrical relationship and engage each other at their mutually facing surfaces.
32. A cistern according to one of claims 26 to 31 characterised in that the bell (63) with the displacement body (99) formed thereon is supported by way of a spring (105) at the upper end (76) of the suction removal tube (29).
33. A cistern according to one of claims 26 to 32 characterised in that from the yoke portion (102) of the displacement body (99) a ring (109) fixedly connected thereto projects into the barrier water (96) in the barrier water container (82) and the bottom (85) of the barrier water container (82) has directly beneath the ring (109) a depression (86) for receiving the ring (109).
34. A cistern according to one of claims 26 to 33 characterised in that when the displacement body (99) is moved downwardly into the barrier water container (82) a barrier volume of water (96) is displaced out of the barrier water container (82), to open the communication between the extension (30) and the suction removal tube (29).
35. A cistern according to one of claims 22 to 34 characterised in that the annular inside wall (83) of the barrier water container (82) is lower for the discharge flow of the displaced barrier water (96) towards the extension (30) than an outside wall (88), disposed opposite thereto, of the barrier water container (82).
36. A cistern according to one of claims 23 to 34 characterised in that an outside wall (88) of the barrier water container (82), which is disposed opposite the annular inside wall (83) of the barrier water container (82), is lower for the discharge flow of the displaced barrier water (96) towards the flushing water (48) in the housing (1) than the inside wall (83).
37. A cistern according to one of claims 7 to 36 characterised in that the bell (63) has a coupling (106) which can be connected to the flushing valve (49).
38. A cistern according to claim 37 characterised in that the bell (63) is releasably connected by way of the coupling (106) to the extension (30).
39. A cistern according to claim 37 or claim 38 characterised in that the coupling (106) is provided at the outside wall (88) of the barrier water container (82) which is fixedly connected to the extension (30).
40. A cistern according to one of claims 37 to 39 characterised in that the outer limb (101) of the displacement body (99) projects with its upper edge (108) which is away from the yoke (102) under at least one projection (107) which projects from the outside wall (88) of the barrier water container (82) towards the displacement body (99).
41. A cistern according to one of claims 7 to 40 characterised in that the bell (63) is guided with a guide means on the suction removal tube (29).
42. A cistern according to claim 41 characterised in that the guide means is in the form of a cylindrical unit (69) which is fixed in the centre of the bell (63) and which is guided with its outside surface within the suction removal tube (29).
43. A cistern according to claim 41 or claim 42 characterised in that the cylindrical unit (69) comprises at least two radially outwardly extending blades (71, 72) which are supported with their outer edges (73, 74) in the suction removal tube (29).
44. A cistern according to one of claims 41 to 43 characterised in that at its upper end (76) opening into the bell (63) the suction removal tube (29) has a taper (67) in which the blades (71, 72) of the cylindrical unit (69) are guided.
45. A cistern according to claim 44 characterised in that the taper (67) is fixed by way of a frustoconical enlargement portion (68) on the suction removal tube (29) in a push-in connection (126).
46. A cistern according to claim 45 characterised in that the enlargement portion (68) is mounted in the push-in connection (126) orientably in the rotary direction with respect to the suction removal tube (29).
47. A cistern according to one of claims 17 to 46 characterised in that provided in the barrier water container (82) is a float (119) which floats in the barrier water (96).
48. A cistern according to claim 47 characterised in that enclosed in the float (119) is a permanent magnet (118) which is in mutual relationship with a reed switch (116) which is fixed outside the barrier water container (82).
49. A cistern according to claim 48 characterised in that the reed switch (116) is fixed within the suction removal tube (29) at a height which corresponds to the position of the float (119) when the barrier water container (82) is emptied and is connected by way of control lines (117) to the drive (43), fixed in the suction removal tube (29), of the reduced pressure-generating means (42).
50. A cistern according to one of claims 47 to 49 characterised in that the float (119) is guided in the annular space (81) between the flanged-over portion (77) and the outside wall of the suction removal tube (29).
51. A cistern according to one of claims 46 to 50 characterised in that the float (119) is adjustable in its position with respect to the reed switch (116) by way of the push-in connection (126).
52. A cistern according to one of claims 11 to 51 characterised in that the barrier water container (82) is fixed by way of a push-in connection (87) on an upper part of the extension (30), that is towards the bell (63).
53. A cistern according to claim 52 characterised in that the push-in connection (87) is provided at an outside wall of the barrier water container (82), which outside wall surrounds the depression (86) for receiving the ring (109).
54. A cistern according to one of claims 47 to 53 characterised in that the float (119) which floats in the barrier water container (82) is aligned with the embedded magnet (118) with respect to the reed switch (116) which is fixed in the suction removal tube (29).
55. A cistern according to claim 54 characterised in that provided between the suction removal tube (29) and the extension (30) is an adjusting means which determines the association thereof in the rotary direction about a common central axis.
56. A cistern according to claim 54 or claim 55 characterised in that the adjusting means is provided in a gap (50) between the extension (30) and the suction removal tube (29).
57. A cistern according to one of claims 54 to 56 characterised in that the adjusting means are in the form of slide portions (306, 308) which extend at a predetermined spacing (309) from each other on at least one of the mutually oppositely disposed surfaces of the suction removal tube (29) and the extension (30) respectively in the longitudinal direction thereof and provided on the respective other surface is at least one further slide portion (307) which is guided within the spacing (309).
58. A cistern according to one of claims 1 to 56 characterised in that connected to the extension (30) is an emergency float (368) which lifts it when an uppermost water level which is permissible in the housing (1) is exceeded.
59. A cistern according to claim 58 characterised in that the emergency float (368) is fixed on an outer surface, which is remote from the inner wall (83), of an outer wall (88) which delimits the barrier water container (82).
60. A cistern according to one of claims 1 to 59 characterised in that the flushing valve (49) has a valve seat (52) provided on a nut (20) with which the discharge fitting (3) is screwed in the bottom (7).
61. A cistern according to claim 60 characterised in that the nut (20) is screwed to a male screwthread (21) provided on the discharge connection (13) which projects through the bottom (7) and which on its outer surface (18) projecting out of the bottom (7) towards the toilet pan (4) has a receiving means (17) in which there is disposed a sealing ring (16) which is pressed sealingly by means of the nut (20) to an outside surface (19), which is towards it, of the bottom (7).
62. A cistern according to claim 60 or claim 61 characterised in that the suction removal tube (29) is eccentrically disposed in the discharge connection (13), is fixedly connected thereto, and is passed outside the housing (1) through a wall (34) of the discharge connection (13).
63. A cistern according to one of claims 60 to 62 characterised in that at its lower end (61) towards the valve seat (52) the extension (30) is in the form of a valve portion (53).
64. A cistern according to claim 63 characterised in that at its lower end (61) the extension (30) is connected to the valve portion (53) by way of a push-in connection (60).
65. A cistern according to claim 63 or claim 64 characterised in that the valve portion (53) has a sealing seat (53) in which there is guided a seal (54) which bears on a circular periphery extending out of the sealing seat (55) on the valve seat (55).
66. A cistern according to one of claims 63 to 65 characterised in that the valve seat (52) is in the form of an annular raised portion which rises in the direction of the seal (54), which bears against it from above, on the nut (20), and which in the direction towards an opening surrounded by the nut (20), provides a conical inside surface (59) on which an outside surface of the valve portion (53), which surface is of a correspondingly conical configuration, is supported when a seal (54) bears against the valve seat.
67. A cistern according to claim 5 characterised in that in the region of its eccentric guidance configuration the suction removal tube (29) has a common wall (32) with the discharge connection (13).
68. A cistern according to claim 67 characterised in that in the region of the discharge connection (13) the suction removal tube (29) is in the form of a connecting portion (31) of small diameter, which is connected by way of a push-in connection (40) to a main portion (39) of the suction removal tube (29), said main portion extending through the extension (30).
69. A cistern according to claim 68 characterised in that the main portion (39) has an inclined bottom (45) which falls away towards the push-in connection (40).
70. A cistern according to claim 68 or claim 69 characterised in that provided on a peripheral portion surrounding the main portion (39) is a skirt (46) which projects beyond the inclined bottom (45) and which with the inclined bottom (45) provides a pocket for accommodating water eddies occurring when the flushing valve (49) is opened.
71. A cistern according to one of claims 1 to 70 characterised in that provided in an annular gap (50) between the suction removal tube (29) and the extension (30) is at least one slide portion (51) which is in the form of a spray-prevention means and which prevents water which is flowing away through the flushing valve (49) from spraying up towards the bell (63).
72. A cistern according to claim 71 characterised in that at least two slide portions (51) in the form of ring portions are distributed in mutually displaced relationship over the length of the main portion (39).
73. A cistern according to one of claims 1 to 8 characterised in that the suction removal tube (29) is connected to an extractor by way of an odour trap controlled by a solenoid valve (127).
74. A cistern according to claim 73 characterised in that the solenoid valve (127) is provided within the suction removal tube (29).
75. A cistern according to claim 73 characterised in that the solenoid valve (128) is provided outside the flushing valve (49).
76. A cistern according to claim 75 characterised in that the solenoid valve (128) is arranged under a baffle (129) provided at the bottom (7) of the housing (1).
77. A cistern according to claims 1 to 7 characterised in that the reduced pressure-generating means (42) has an electrical supply line (120) which is passed through the suction removal tube (29).
78. A cistern according to claim 77 characterised in that the supply line (120) leads to a mains unit (121) provided in the region of the flushing valve (49) at the bottom (7) of the housing (1).
79. A cistern according to claim 77 characterised in that the supply line (120) leads to a mains unit (130) which is provided above the flushing valve (49).
80. A cistern according to one of claims 1 to 12 characterised in that the barrier water container (82) has an overflow (133) opening into the extension (30).
81. A cistern according to one of claims 48 to 50 characterised in that the permanent magnet (118) is arranged eccentrically within the float (119).
82. A cistern according to one of claims 25 to 81 characterised in that fixed to the displacement body (99) is a flushing knob (62) which projects out of the housing (1) and which can be moved downwardly with the displacement body into the housing (1).
83. A cistern according to claim 82 characterised in that the flushing knob (62) is fixed to the bell (63).
84. A cistern according to claim 83 characterised in that the flushing knob (62) is fixed to the bell (63) in the region of the cylindrical unit (69) extending through the bell (63).
85. A cistern according to one of claims 25 to 84 characterised in that for actuation of the displacement body (99) there is provided an electrical solenoid (124) which is supported with respect to a fixed point.
86. A cistern according to claim 85 characterised in that the float control has a float (313) which is guided on the extension (30) and which floats in at least a part of the flushing water accumulated in the housing (1).
87. A cistern according to claim 86 characterised in that the float (313) is guided slidingly on the extension (30) and can be coupled to the extension (30) by way of an adjustable coupling.
88. A cistern according to one of claims 85 to 87 characterised in that the coupling comprises a clamping ring (317) which sticks on the extension (30) and against which the float (313) bears in the upwardly floated condition on its lower edge (319) which is towards the valve portion (53).
89. A cistern according to one of claims 85 to 88 characterised in that the clamping ring (317) has an upper position which is far removed from the valve portion (53) for shorter opening in respect of time of the flushing valve (49) and a lower position which is closer to the valve portion (53) for short opening in respect of time of the flushing valve (49).
90. A cistern according to one of claims 86 to 89 characterised in that the float (313) has a buoyancy which is less than the weight of a part of the discharge fitting (3), which part moves downwardly towards the valve seat (52).
91. A cistern according to claim 90 characterised in that the buoyancy of the float (313) is of such a magnitude as to retard the downwardly moving part depending on the respective length of the flushing time required.
92. A cistern according to claim 90 or claim 91 characterised in that the buoyancy of the float (313) is of a magnitude to correspond to an amount of flushing water of 9 l.
93. A cistern according to claim 90 or claim 91 characterised in that the buoyancy of the float (313) is of a magnitude to correspond to an amount of flushing water of 6 l.
94. A cistern according to one of claims 85 to 93 characterised in that associated with the float (313) is a float housing (320) which is adjusted with respect to the housing (1).
95. A cistern according to claim 94 characterised in that the float housing (320) surrounds the discharge fitting (3) at a predetermined spacing.
96. A cistern according to claim 94 or claim 95 characterised in that the float housing (320) is arranged in a direction towards the bell (63) above a valve portion (53) in the opened condition of the flushing valve (49).
97. A cistern according to one of claims 94 to 96 characterised in that the float housing (320) has a housing bottom (330) which is towards the valve portion (53) and which is arranged relative to the bottom (7) of the housing (1) at a height at which the flushing valve (49) is closed when the float (313) is resting on the housing bottom (330).
98. A cistern according to claim 97 characterised in that provided at the housing bottom (230) are drain holes (370) for draining of the water towards the internal space (2).
99. A cistern according to one of claims 94 to 97 characterised in that the float housing (320) is supported with respect to the bottom (7) of the housing (1).
100. A cistern according to claim 99 characterised in that the float housing (320) is supported on the bottom (7) with at least three legs (332, 333) which are uniformly distributed over the periphery of the float housing.
101. A cistern according to claim 100 characterised in that the legs (332, 333) are elastic at least in a direction towards the discharge fitting (3) and at their ends (334) remote from the float housing (320) are releasably connected to the bottom (7) in which they are elastically latched.
102. A cistern according to claim 101 characterised in that provided on the bottom (7) are pockets (369) which are open towards the discharge fitting (3) and into each of which engages a respective leg (332, 333) with an end portion (336) that is remote from the discharge fitting (3).
103. A cistern according to claim 102 characterised in that the pocket (369) is in the form of a collar (338) concentrically surrounding the flushing valve (49) and under which the legs (332, 333) hook with their angled end portions (336).
104. A cistern according to one of claims 94 to 97 characterised in that the float housing (320) is supported with respect to the nut (20).
105. A cistern according to claim 104 characterised in that the nut (20) has receiving slots (340) which are uniformly distributed at its outer periphery (339) and into which engage legs (332, 333) which are uniformly distributed at the periphery of the float housing (320).
106. A cistern according to claim 105 characterised in that the legs (332, 333) are angled over towards the discharge fitting (3) and each leg (332, 333) engages into a respective receiving slot (340) in the nut (20) and engages with its angled-over end (341) under a circular collar (342) which is provided on the nut (20) and in which the receiving slots (340) are provided.
107. A cistern according to claim 106 characterised in that rotatably mounted within the collar (342) on a mounting location (334) on the nut (20) is a rotary ring (345) which has an asymmetrical outer boundary configuration (346) and which in the region of its further distance from a centre point of the rotary ring (345) acts on the legs (332, 333) to lift them off the collar.
108. A cistern according to one of claims 94 to 107 characterised in that the extension (30) is urged with a low degree of biasing elastically in the opening direction of the flushing valve (49).
109. A cistern according to claim 108 characterised in that the extension (30) is supported relative to the bottom (7) with a slightly biased coil spring (327).
110. A cistern according to claim 108 or claim 109 characterised in that the extension (30) is elastically supported relative to the housing bottom (330) of the float housing (320) with a slightly biased coil spring (327) extending between an inner surface (314) of the float (313), that is towards the extension (30), and the extension (30), around same.
111. A cistern according to claim 110 characterised in that the coil spring (327) is supported on the clamping ring (317) with its upper end (328) that is remote from the housing bottom (330).
112. A cistern according to claims 25 to 111 characterised in that disposed between the discharge connection (13) and the bottom (7) of the housing (1) are spacer rings (23) for fine adjustment of the barrier water container (82) connected to the extension (30), relative to the displacement body (99) connected to the bell (63).
113. A cistern according to one of claims 1 to 12, 15 to 61 and 63 to 112 characterised in that in the case of a suction removal toilet (349) the connecting portion (31) opens into an upper chamber (357) which in the direction of a liquid issuing out of the toilet pan (4) is disposed downstream of an odour trap in the toilet pan (4) and upstream of a constriction location (355) which opens into the suction removal conduit (27).
114. A cistern according to claim 113 characterised in that the connecting portion (31) extends straight and substantially parallel to a centre line which extends through the discharge fitting (3) and in relation to which it extends eccentrically, through a distributor space (358) which distributes flushing liquid in the toilet pan (4) and which is arranged in the toilet pan (4) immediately downstream of the flushing valve (49) in the flushing liquid flow direction.
115. A cistern according to claim 113 or claim 114 characterised in that the connecting portion (31) is fixed with its connecting end (35) that opens into the distributor space (358) to a connecting sleeve (360) which concentrically surrounds a suction removal opening (361) provided in a wall (362) separating the distributor space (358) from the upper chamber (357).
116. A cistern according to claim 115 characterised in that the suction removal opening (361) is provided in the rectilinear direction of the connecting portion (31).
117. A cistern according to claim 115 or claim 116 characterised in that the connecting sleeve (360) projects into the distributor space (358) and carries an elastic connecting connection (362) whose end that is remote from the connecting sleeve (360) receives the connecting portion (31) with its connecting end (35) which projects into the distributor space (358).
118. A cistern according to one of claims 113 to 117 characterised in that in the suction removal toilet (349) the suction removal tube (29) is extended upwardly beyond the barrier water container (82) towards the top (9) of the housing (1) with its upper edge (364) to such an extent that the water column (365) which is formed in the barrier water container (82) in the event of a reduced pressure produced in the distributor space (358) by initiation of the flush for flushing the toilet pan (4) ends with its upper end (366) that is towards the top (9) below the upper edge (364) of the suction removal tube (29).
119. A cistern according to claim 118 characterised in that provided above a level (97) of the barrier water (96) in the barrier water container (82) beneath the bell (63) is a compensating space (367) for receiving a substantial part of the barrier water (96) which is sucked in under the influence of the reduced pressure.
120. A cistern according to claim 119 characterised in that the compensating space (367) is provided in a direction towards the top (9) above the flanged-over portion (77) between the taper portion (67) and the peripheral portion (65).
121. A cistern according to claim 119 or claim 120 characterised in that the barrier water container (82) is arranged approximately in a region within the housing (1) which is approximatelyat half the height of the internal space (2) enclosed by the housing (1) and the taper portion (67) extends aproximately as far as the top (9) of the housing (1).
122. A cistern according to one of claims 1 to 4, 6 to 53, 63 to 66 and 73 to 121 characterised in that in the case of a discharge fitting (3) the extension (30) extends parallel to the suction removal tube (29) beside same and the bell (63) has two inlets (197, 198) to the internal space (64) thereof, through one of which the extension (30) projects into the internal space (64) and through the other of which the suction removal tube (29) projects into the internal space (64).
123. A cistern according to claim 122 characterised in that the barrier water container (82) is fixed to an upper end (366) of the suction removal tube (29), which projects into the bell (66).
124. A cistern according to claim 122 or claim 123 characterised in that the displacement body (99) is fixed to the inlet (198) of the bell (63), which receives the taper configuration (67) of the suction removal tube (29).
125. A cistern according to one of claims 122 to 124 characterised in that the flushing knob (62) is fixed to a bell end portion (66) extending over both inlets (197, 198).
126. A cistern according to claim 125 characterised in that the flushing knob (62) is fixed to the bell end portion above the displacement body (99).
127. A cistern according to claim 125 or claim 126 characterised in that the spring (105) is arranged beneath the flushing knob (62) between the flanged-over portion (77) and the bell end portion (66).
128. A cistern according to one of claims 122 to 127 characterised in that there is provided a coupling between the extension (30) and the bell (63) in the region of the inlet (197) provided for the extension (30).
129. A cistern according to one of claims 122 to 128 characterised in that the flushing valve (49) is arranged perpendicularly beneath the extension (30) in the direction of the flushing water issuing from the flushing valve.
130. A cistern according to claim 129 characterised in that the flushing valve (49) opens in the direction of a discharge connection (13) bearing against it and fixed to the bottom (7) by means of a nut (20).
131. A cistern according to claim 129 or claim 130 characterised in that the discharge connection (13) is surrounded by an annular space (312) into which open on the one hand the suction removal tube (29) and on the other hand the connecting portion (31) of the toilet pan (4).
132. A cistern according to claim 131 characterised in that the annular space (312) is annularly surrounded by a respective distributor space in the form of a ring (20, 201), from which respective access openings (202, 203) open into the annular space and a first distributor space extends within the housing (1) and is connected to the suction removal tube (29) by way of a connecting conduit (199) which extends immediately above the bottom (7) substantially parallel thereto and a second distrubutor space extends outside the housing (1) and is connected to the connecting portion (31) by way of a tube portion which extends immediately beneath the bottom (7) substantially parallel thereto.
133. A cistern according to one of claims 122 to 132 characterised in that the discharge connection (13) extends with the annular space (312) surrounding same through the opening (15) in the bottom (7) of the housing (1).

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