DE19725997C2 - Device for collecting rainwater - Google Patents

Description

The invention relates to a device according to the preamble of claim 1.

Devices for collecting rainwater in one for installation in one Underground certain housing, the interior of which is at least partially formed as a sieve intermediate floor in an upper chamber above the Intermediate floor and is divided into a lower chamber under the intermediate floor, are known in various designs (DE 295 02 895 U1, US 5 405 539).

The known devices have at least one rainwater inlet on one Circumferential wall of the housing, which opens into the upper chamber, a water and Dirt discharge that can be connected to a duct system and on the lower chamber an outlet for draining the collected rainwater. Especially if the sieve arranged between the upper chamber and the lower chamber very much is closely meshed, what an optimal removal of dirt, etc., d. H. to achieve a high degree of purification of the collected rainwater is expedient, the known devices have a relatively low Efficiency on, d. H. the amount of rainwater collected compared to the actual amount of rainwater is unsatisfactory. This is according to one of the Invention underlying knowledge of a lack of pressure compensation between the top and bottom of the mezzanine.

The object of the invention is to provide a device for collecting rainwater to show an improved efficiency. To solve this problem is one Device for collecting rainwater according to claim 1 educated.

The training according to the invention on the one hand the effectiveness of Device significantly increased, because a pressure equalization between the top and bottom of the mezzanine floor and thereby the  rainwater led to the intermediate floor even with a very close-meshed sieve with a high degree of cleaning easier and in a much larger amount due to the Intermediate floor can flow. Through ventilation on the intermediate floor or through the pressure equalization achieved in this way is also possible with the invention, on the lower chamber, d. H. on the chamber below the intermediate floor or on drain there provided a siphon-like odor trap. This closure forms a barrier for the air in the lower chamber, which Ambient pressure can not be overcome. This would be without the ventilation the lower chamber hermetically sealed outside the fine mesh sieve, see above that without the ventilation also only very small amounts of water through a close-mesh sieve would get into the lower chamber. This is with the invention effectively prevented.

In its simplest and cheapest configuration, the invention has Device a housing which is formed by a circular or hollow cylinder, which forms the peripheral wall of the housing and at one end or at the Underside of the housing through a bottom and at the upper end or at the The top of the housing is closed by a removable cover. Inside the The intermediate floor, which is designed as a sieve, is then inclined in the housing divided the interior of the housing into the upper and lower chamber.

The intermediate shelf is removable. In a preferred embodiment of the Invention, the screen of the intermediate floor is slightly corrugated, the troughs and Wave crests extend transversely or perpendicularly to an axial direction that the Flow direction of the water through the intermediate floor represents and the inlet and the Process connects. By appropriate choice of the angle of inclination, the Has intermediate floor opposite the horizontal, and by the height of the Corrugation is possible, even with low rainfall, a reliable one Dirt discharge with the largest possible amount of collected rainwater sure.  

With a circular-cylindrical design of the peripheral wall of the housing results for the inclined, removable intermediate floor continues to be an oval circumferential line. This then ensures that the intermediate floor in each case only in the desired direction, namely with the wave valleys and wave crests of Corrugation of the screen lying perpendicular to the axial direction between the inlet and the discharge can be arranged in the housing.

Developments of the invention are the subject of the dependent claims. The invention is explained in more detail below with reference to the figures using an exemplary embodiment.

Show it:

Figure 1 in a simplified representation and in longitudinal section a device for filtering and collecting rainwater, similar to the prior art.

FIG. 2 shows, in a simplified representation and in a top view, an intermediate bottom of the device according to FIG. 1 designed as a sieve;

Fig. 3 is an enlarged detail view of a partial section through the sieve-like intermediate floor;

Fig. 4 in an enlarged view and in section, the lower end of a device for filtering and collecting rainwater similar to the prior art, but together with the odor trap provided there;

FIG. 5 is a simplified depiction in longitudinal section of an embodiment of the means for filtering and collecting rain water according to the invention;

FIG. 6 shows, in a simplified representation and in plan view, an intermediate bottom of the device according to FIG. 5, which is designed as a sieve;

Fig. 7 is an enlarged detail view of a partial section through the sieve-like intermediate floor of the apparatus of Fig. 6.

The device shown in FIGS. 1-3, which is designed in a similar manner to known devices, serves as a rainwater collector and is designed for an arrangement in the ground. In detail, the collector consists of a circular cylindrical housing 1 with a horizontal housing axis A. At the top, the housing 1 is closed by a removable cover 2 . On the underside, the housing has a bottom 3 with a central opening 4 with a connecting flange 5 , to which a pipe (not shown) leading to a rainwater collecting container can be connected.

In the interior of the housing 1 , an intermediate floor 6 is provided which is spaced from the floor 3 in the direction of the axis A and whose plane with a horizontal reference plane 7 intersecting the axis A perpendicularly has a flat angle α, ie an angle substantially smaller than 30 ° includes. In the embodiment shown, the angle α is approximately 10 °.

The intermediate floor 6 is removable and rests with an intermediate floor edge or frame 8 on a flange 9 provided on the inner surface of the cylindrical housing peripheral wall 1 '. The flange or holder 9 is arranged and the frame 8 is shaped such that the latter is arranged obliquely in the housing 1 in accordance with the angle of inclination α and the holder 9 also closes the gap between the circumference of the frame 8 and the inner surface of the circumferential wall 1 ' is. Corresponding to the inclination, the holder 8 has an oval shape on the outer surface, the longer axis L of this shape including the angle α with the reference plane 7 .

In the area of the frame opening, the frame 8 has integrally formed webs 10 , which lie with their longitudinal extension in the plane of the frame 8 , but perpendicular to the axis L. On the frame 8 and the webs 10 a sieve 11 closing the opening of the frame 8 is arranged and fastened in a suitable form in such a way that this sieve 11 forms a wave-like structure, with wave crests and troughs extending perpendicular to the axis L in that the sieve is supported on the webs 10 and sags slightly downwards in the spaces between two adjacent webs 10 .

At the level of the intermediate floor 6 , an inlet flange 12 with an opening 13 and an outlet flange 14 (discharge) with an opening 15 are provided opposite one another with respect to the axis A, in such a way that the lower region of the inlet flange 12 and Outlet flange 14 are each level with the intermediate floor 6 . The axes of the inlet flange 12 and the outlet flange 14 are arranged in a common plane with the axes L and A, namely parallel to the plane of the intermediate floor 6 . The axes of the flanges 12 and 14 also enclose the angle α with the reference plane 7 .

The inlet flange 12 is connected to a pipe 16 which serves to supply rainwater and is, for example, part of the drainage of a gutter. The outlet flange 14 is connected to a tube 17 which, for. B. leads to a channel.

The rainwater flows through the pipe 16 and the opening 13 into the interior of the housing 1 and then passes through the sieve 11 into the space below the intermediate floor 6 and from there via the opening 4 into a collecting container, not shown. Because the screen 11 is slightly corrugated, a certain turbulent flow in the rainwater flow onto the screen 11 is achieved, so that despite the fine-meshed design of the screen 11, a sufficiently large amount of rainwater passes through the intermediate floor 6 .

Since the openings 13 and 14 lie opposite one another axially and are arranged essentially in the above-described manner at the same level as the level of the intermediate floor 6 , that rainwater which does not pass through the sieve 11 into the space under the intermediate floor 6 when it flows through the housing 1 essentially no change of direction. This ensures that even with a small amount of precipitation enough water still flows through the screen 11 from the inlet flange 12 to the outlet flange 14 to clean the screen 11 of dirt or other deposits and to convey them into the tube 17 .

The device avoids guide surfaces fixed to the housing for deflecting or deflecting the water flow between the openings 13 and 15 in order to achieve a sufficient cleaning effect even with small amounts of water. The housing 1 with all the elements provided on this housing, including the housing base 3 and flanges 5 , 12 and 14 and holder 9 , the frame 8 of the intermediate floor including the webs 10 are made of plastic.

In FIG. 4, the lower, circular cylinder-shaped end 32 is shown a housing of a device for filtering and collecting rainwater. This housing part 32 is, for example, the lower part of the housing 1 of the collector of FIGS. 1-3. A cup-shaped closure element 33 of the odor trap 34 is pushed onto the housing part 32 or onto the circular cylindrical outer surface of the housing 32 concentrically surrounding the vertical housing axis. The cup-shaped end element 33 has a circular cylindrical peripheral wall 35 and a closed bottom 36 . The housing part 32 extends into the upper, open end of the closure 33 . A sealing ring 37 , which is provided in a receptacle 38 on the inside of the peripheral wall 35 in the region of the upper, open edge and also concentrically surrounds the vertical housing axis A, provides a tight seal for the closure element 33 at the top or at the transition reached between this closure element and the housing part 32 . The housing part 32 has on the underside the flange 39 (pipe section) which projects downwards and which corresponds in function and design to the outlet 5 or the outlet 23 or 30 and via which the lower housing space beneath the intermediate testicle 6 or 27 collected rainwater can be discharged. The flange 39 , which is formed by a tube piece open at both ends, extends with its open end into a ring 40 which is connected on the inside of the base 36 to an end face such that the ring 40 is arranged coaxially with the axis A and concentrically encloses the lower end of the flange 39 at a distance. The upper edge of the ring 40 which is distant from the bottom 36 is at a level higher than the lower edge or the lower opening of the flange 39 . In the illustrated embodiment, four lamella-like wall sections 41 are provided on the inner surface of the ring 40 , offset by 90 ° around the axis A, which are arranged with their central plane radially to the axis A and have contact or support surfaces for the outer surface of the inner edges Form flange 39 , whereby the distance between the ring 40 and the outer surface of the flange 39 is predetermined. The wall sections 41 can be formed by appropriate gradation on their radially inner edges so that they also form a contact surface for the end face of the flange 39 at the lower, open end in the region of this gradation and thus the distance between the lower end of the flange 39 and define the inner surface of the bottom 36 . Such a gradation is shown in FIG. 4 at 42 with broken lines. The ring connected to the bottom 36 forms in the interior of the closure element 33 a trough 43 which is open at the top but otherwise closed and which, together with the flange or pipe piece 39 extending into this trough, forms a siphon-like odor barrier 44 . On the peripheral wall 35 of the closure 33 , a connection 45 formed by a piece of pipe is provided, which forms the actual outlet for the collected rainwater and is connected to a rainwater collecting container or a cistern via a pipe, not shown. The siphon-like odor barrier 44 effectively prevents air contaminated with waste or digester gases from a sewer to which the rainwater collector is connected (outlet flange 40 of FIG. 1) via connection 45 into the collecting container or into the cistern and thereby spoils the water collected there.

Another advantage of the odor trap 34 is that the closure element 33 by the circular cylindrical design of the housing on the lower housing part 32 and by the likewise cylindrical design of the peripheral wall 35 of the closure element 33 and by the flange 39 arranged coaxially with the housing axis A around the Housing axis A can be pivoted so that the connection or outlet 45 can be optimally oriented to the respective installation requirements.

Another significant advantage is that the outlet 45 leads with its axis radially to the axis A away from the peripheral wall 35 , whereby the pipeline can be connected horizontally to the outlet and this results in an extremely low installation height.

Figs. 5-7 show a device according to the invention, which in turn serves as a rainwater collector and adapted for placement in the ground. Specifically, the collector consists of the circular-cylindrical housing 101 with a vertical housing axis A in the illustrated embodiment. The housing 101 is closed at the top by a removable cover 102 . On the underside, the housing has a bottom 103 with a central opening 104 with a connecting flange 105 , to which a pipe (not shown) leading to a rainwater collecting container can be connected.

Provided in the interior of the housing 101 is an intermediate floor 106 which is spaced apart from the floor 103 in the direction of the axis A and whose plane with a horizontal reference plane 107 intersecting the axis A perpendicularly has a flat angle α, ie an angle substantially less than 30 ° includes. In the embodiment shown, the angle α is approximately 10 °.

The intermediate base 106 is removable and rests with an intermediate base edge or frame 8 on a flange 109 provided on the inner surface of the cylindrical housing peripheral wall 101 '. This flange 109 is arranged and the frame 108 is shaped such that the latter is arranged obliquely in accordance with the angle of inclination α in the housing 1 and the gap 109 also closes the gap between the circumference of the frame 108 and the inner surface of the circumferential wall 101 '. Corresponding to the inclination, the frame 108 has an oval shape on the outer surface, the longer axis L of this shape including the angle α with the reference plane 107 .

In the area of the frame opening, the frame 108 has integrally formed webs 110 , which lie with their longitudinal extension in the plane of the frame 108 , but perpendicular to the axis L. A fine-meshed sieve 111 covering the opening of the frame 108 is arranged on the frame 108 and the webs 110 and fastened in a suitable form in such a way that this sieve 111 forms a wave-like structure, with wave crests and troughs extending perpendicular to the axis L, that the sieve is supported on the webs 110 and sags slightly downwards in the spaces between two adjacent webs 110 .

An inlet flange 112 with an opening 113 and an outlet flange 114 (discharge) with an opening 115 are provided about the axis A offset from one another, in such a way that the axes of the two flanges run radially to the axis A and the inlet flange 112 completely, ie also with the lowest part of its inner surface slightly (amount a) above the level of the uppermost section of the intermediate floor and the outlet flange 114 is level or approximately level with the intermediate floor 106 . The axes of the inlet flange 112 and the outlet flange 114 are arranged in a common plane with the axis A.

The inlet flange 112 is connected to a pipe 116 , which is used to supply rainwater and is, for example, part of the drainage of a gutter. The outlet flange 114 is connected to a tube 117 , which, for. B. leads to a channel.

The rainwater flows through the pipe 116 and the opening 113 into the interior of the housing 101 and then passes through the sieve 111 into the space 122 below the intermediate floor 106 and from there via the opening 4 into a collecting tank, not shown. Because the screen 111 is slightly corrugated, a certain turbulent flow in the rainwater flow is achieved on the screen 111 , so that despite the fine-meshed design of the screen 111, a sufficiently large amount of rainwater passes through the intermediate floor 106 .

As can be seen in FIGS. 6 and 7, on the intermediate floor frame 108 a handle is provided which is bent from a piece of metal and protrudes from the top of the intermediate floor 106 . The handle is designed like a bow, consisting of two leg sections 118 'and a yoke section 118 "connecting these leg sections. The latter is parallel or approximately parallel to the level of the intermediate floor 106. The leg sections 118 ' are inclined or inclined upward above the level of the intermediate floor 6 These leg sections 118 'are each provided on a side of the intermediate floor 106 which is offset by 90 ° with respect to the axis of the inlet flange 112 and the outlet flange 114. On the underside of the intermediate floor 106 , each leg 118 ' forms an opening 119 , above the space 122 below the intermediate floor 106 is connected to a channel 120 formed in the interior of the handle 118. In the region of the yoke section 118 ″ arranged at a distance above the intermediate floor 106 , the channel 20 has openings 21 . Ventilation of the space 122 formed under the intermediate floor 106 of the housing 101 is thus achieved via the handle 18 or its channel 20 and the openings 119 and 121 . This avoids in the fine-meshed formation of the screen of the intermediate floor 106 that this intermediate floor 106 could be blocked for passage of the water due to a lack of pressure compensation between the top and bottom of the intermediate floor and supported by the surface tension of the water. In any case, it has been shown that the described ventilation (channel 120 and openings 119 and 121 ) can achieve a significantly improved efficiency for the device. The design of the vent as a handle 118 has the advantage that a convenient removal of the sieve-like intermediate base, for example for cleaning purposes, is also possible with the handle 118 . The yoke section 118 ″ with the opening 121 is at a level which is clearly above the level of the intermediate floor 106 and is not reached by the water level in the housing 101 even with a maximum water inflow via the inlet flange 112 .

As indicated above, the inlet flange with its axis radial to the axis A is at a level which is slightly above the level of the uppermost region of the screen-like intermediate floor 106 , as is indicated in FIG. 1 by the distance a. Due to gravity, the direction of flow of the water when it hits the sieve-like intermediate floor is at an angle with the level of this intermediate floor, ie the direction of flow of the water is not parallel to the level of the intermediate floor, so that despite the very fine or close-meshed sieve of the intermediate floor 6 a high yield of water is achieved.

The housing 101 with all elements provided on this housing, including the housing base 103 and flanges 105 , 112 and 114 and holder 109 , the frame 108 of the intermediate floor including the webs 110 are made of plastic.

The invention has been described above using an exemplary embodiment. It it goes without saying that numerous changes and modifications are possible without that this leaves the inventive idea on which the invention is based.  

LIST OF REFERENCE NUMBERS

1

casing

1

'Peripheral wall

2

cover

3

caseback

4

opening

5

flange

6

false floor

7

reference plane

8th

Between the bottom frame

9

holder

10

strut

11

scree

12

inlet flange

13

opening

14

outlet flange

15

opening

16

.

17

pipe

18

Rainwater inlet

18

'

18

" The End

19

.

19

' Casing

20

peripheral wall

20

'Longitudinal wall

21

bulkhead

22

bottom wall

23

outflow

24

.

24

'Cover

25

.

26

opening

27

scree

28

casing

29

peripheral wall

30

opening

31

outflow

32

casing

33

terminating element

34

Odor closure

35

peripheral wall

36

ground

37

poetry

38

admission

39

Pipe piece or flange

40

ring

41

wall section

42

gradation

43

tub

44

siphon-like odor barrier

45

Connection or outlet

101

casing

101

'Peripheral wall

102

cover

103

caseback

104

opening

105

flange

106

false floor

107

reference plane

108

Between the bottom frame

109

holder

110

strut

111

scree

112

inlet flange

113

opening

114

outlet flange

115

opening

116

.

117

pipe

118

handle

18

'Thigh

118

"Yoke section

119

opening

120

channel

121

opening

122

housing space
A axis
a distance

Claims (24)

1. Device for collecting rainwater, with a housing ( 101 , 119 , 128 ) intended for installation in the underground, the interior of which is formed by an intermediate base ( 106 ) which is at least partially designed as a sieve, into an upper chamber above the intermediate base and into a lower chamber is divided under the intermediate floor, with at least one rainwater inlet ( 112 , 118 ') opening into the upper chamber on a peripheral wall ( 101 ') of the housing, with at least one water and dirt discharge ( 114 ,) provided on the peripheral wall of the housing ( 101 ) 118 "), and with at least one outlet ( 105 , 123 , 131 ) in the lower chamber for removing the collected rainwater, characterized in that at least one vent ( 118 ) is provided on the intermediate floor ( 106 ), which has at least one channel ( 120 ) which forms at least one first opening on the underside of the intermediate floor ( 106 ) and at least one second opening ( 121 ) at a level with spacing nd from the top of the intermediate floor ( 106 ). 2. Device according to claim 1, characterized in that the venting element is formed by at least one pipe section ( 118 ). 3. Device according to claim 1 or 2, characterized in that the ventilation element is a handle ( 118 ). 4. The device according to claim 3, characterized in that the ventilation element is a bracket-like handle ( 118 ) with two legs ( 118 ') and a yoke section connecting these legs ( 118 ") and that at least one leg ( 118 ') of one Tube piece formed handle ( 118 ), the at least one first opening ( 19 ) and at least one leg and / or on a yoke section ( 118 ') connecting the legs ( 118 ') the at least one second opening ( 121 ) are provided. 5. Device according to one of the preceding claims, characterized in that the rainwater inlet ( 112 ) with its lowermost part is at a level above the level of the intermediate floor ( 106 ). 6. Device according to one of the preceding claims, characterized in that a siphon-like odor seal ( 34 ) is provided on the lower chamber or on the outlet ( 5 , 23 , 31 ). 7. Device according to one of the preceding claims, characterized in that the odor trap ( 34 ) is formed by a trough-like or cup-like closure element ( 33 ) which is placed on the underside ( 32 ) of the housing and which has a trough-like depression ( 43 in its interior) ) into which the outlet ( 35 , 23 , 30 ) of the lower chamber or a pipe section ( 39 ) forming this outlet extends to form a siphon-like lock ( 44 ). 8. Device according to one of the preceding claims, characterized in that on the odor trap ( 34 ) or on the closure element ( 33 ) of the odor trap a radially to the vertical housing axis (A) oriented outlet ( 45 ) is provided for the collected rainwater is. 9. Device according to one of the preceding claims, characterized in that the odor trap ( 34 ) or the closing element forming this odor trap ( 33 ) about a vertical axis, preferably about the vertical housing axis (A) is provided on the housing ( 32 ). 10. Device according to one of the preceding claims, characterized in that both the rainwater inlet ( 16 , 18 '), and the discharge ( 14 , 18 ") on the peripheral wall ( 1 ') to a level above the lower chamber and there Drain ( 5 ) are provided. 11. Device according to one of the preceding claims, characterized in that the intermediate bottom ( 6 ) designed as a sieve is inclined at least in a partial area. 12. Device according to one of the preceding claims, characterized in that that the intermediate floor designed as a sieve at least in a partial area is horizontal. 13. Device according to one of the preceding claims, characterized in that the intermediate floor ( 6 ) occupies the entire cross section of the housing ( 1 ) and there is a connection between the upper and lower chamber exclusively via the sieve ( 11 ) of the intermediate floor. 14. Device according to one of the preceding claims, characterized in that the intermediate floor ( 6 ) is inclined over the entire cross section of the housing ( 1 ), preferably in a single, opposite to the horizontal inclined plane. 15. Device according to one of the preceding claims, characterized in that the inlet ( 12 , 18 ') and the discharge ( 14 , 18 ") with respect to a vertical axis (A) of the peripheral wall ( 1 ') are diametrically opposite. 16. Device according to one of the preceding claims, characterized in that the axes of the inlet ( 12 ) and the discharge ( 14 ) and the normal of the inclined intermediate floor ( 6 ) with the axis of the housing ( 1 ) lie in a common plane. 17. Device according to one of the preceding claims, characterized in that the level of the intermediate floor ( 6 ) is level with the respective lower region of the inlet ( 12 ) and the discharge ( 14 ). 18. Device according to one of the preceding claims, characterized in that the sieve ( 11 ) has a wavy course, in which the troughs and crests are each in an axial direction transverse to the connection between the inlet ( 12 ) and the discharge ( 14 ). 19. Device according to one of the preceding claims, characterized in that the intermediate bottom ( 6 ) is arranged removable and resting on at least one holder ( 9 ) inside the housing ( 1 ). 20. Device according to one of the preceding claims, characterized in that the housing ( 1 , 28 ) is designed as a hollow cylinder. 21. Device according to one of the preceding claims, characterized in that the inclined intermediate floor ( 6 ) has an oval outer surface. 22. The apparatus according to claim 20 or 21, characterized in that the Cylinder axis of the housing designed as a hollow cylinder transverse to the axis of the Rainwater inlet and / or the water and dirt discharge. 23. The apparatus according to claim 11 or 12, characterized in that the axis of the housing designed as a hollow cylinder ( 28 ) is parallel to the axis of the rainwater inlet and / or the water and dirt discharge. 24. Device according to one of the preceding claims, characterized in that the rainwater inlet and the water and dirt discharge are formed by a tube or pipe section ( 18 ) which is passed through the housing ( 19 , 28 ) and protrudes from the housing at both ends and forms the rainwater inlet or the water and dirt discharge with these ends, and that the tube ( 18 ) in the interior of the housing ( 19 , 28 ) has at least one opening ( 26 ) at least in the area below, at which the intermediate bottom ( 27 ) is provided.