SK100996A3 - Wc-tank discharger - Google Patents

Abstract

The overflow tube (13) has fittings (19) above the water level (7) which when the cistern body (2) is overloaded, the air inlet into the overflow tube at the overflow opening is reduced. By forming of a closed flow in the lumen of the overflow tube, the outflow power is increased. The fittings consist of a cover which is fixed at a specific distance above the overflow opening and is plate-shaped. The cover extends over an upper edge of the overflow tube. Between the upper edge of the overflow tube and the cover is a ring-shaped gap. The distance between the cover and an upper edge of the overflow tube is approximately 6mm.

Description

-1Hatch flush

Technique area

The invention relates to a cistern with a container and a lid in which a drain kit, an inlet valve and an overflow pipe are arranged with an overflow opening arranged above the water surface.

BACKGROUND OF THE INVENTION

Flushing cisterns of this kind are generally known. There are standards for the drainage capacity of the overflow pipe, which is generally the valve body of the drain valve. Such a standard requires that the inlet flow rate of the inlet valve 0.28 1 / sec maintain a maximum backflow height of 15 mm and that after a water supply interruption, the backflow height drops to a minimum of 5 mm within 2 seconds. So far, this standard has been met by the corresponding dimensioning of the cross-section of the overflow pipe, but in some cases large cross-sections, for example 46 mm, were necessary. Such large pipe cross-sections are disadvantageous, for example, due to material consumption and space requirements. He would like to make the invention here. correction.

SUMMARY OF THE INVENTION

The inventive cistern is characterized in that the overflow pipe has means above the water level which, when the reservoir body is overfilled, reduce the air inlet to the overflow pipe at the overflow hole and increase the drainage capacity by creating a substantially enclosed flow in the overflow pipe cavity. Experiments have shown that the flush tank according to the invention, with an overflow pipe having an internal diameter of 23 mm, guarantees the above standard. The drain power is in this

-2the case is as large as the already known flushing tube flushing device having a clearance of 46 mm. Said means in the invention are realized by a cap which is arranged at a predetermined distance above the overflow opening. According to a further development of the invention, the cap is mounted on a caliper on which the overflow pipe is also mounted. If, according to an embodiment of the invention, the cap is molded to the caliper, the inventive cistern flush can be realized without an additional part.

Further advantageous features are apparent from the dependent claims, the following description and the drawing.

An overview of the figures in the drawing

The embodiment of the invention will be explained in more detail below with reference to the drawing. Shows:

Fig. 1 shows a schematic section through an inventive cistern flush; FIG. 2 is a fragmentary view of the inventive flush cistern of FIG. 1; FIG. 3 is a fragmentary view of the inventive cistern; and FIG. 4 is a graph showing the dependence of the backwater height on time.

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 shows a cistern flushing 1 having a cuboid body of the cistern 2, which for example is mounted on a toilet bowl (not shown). A removable lid 1 is provided on the reservoir body 2, in which the actuating button 12 is mounted. Typically, the float valve referred to as the inlet valve 4 opens and closes depending on

A 3-shaped, well known valve 12 is provided simultaneously

The horizontal distances are located at a certain This distance Q is the water level 7.

The bottom 2 of the reservoir body 2 is provided with a drainage neck 10 which, together with the drainage box 11, forms the drainage valve 12 by opening the central tube 13.

forms an overflow pipe. Pulling of the tube 13 is effected by an angled control button 17 on which the arm 16 is arranged, which engages in the yoke 15. This yoke 15 has the shape of a fork according to Figure 2 and is fixed at the upper end of the tube 13.

The flush tank 1 shown in FIG. 1 is filled with flushing water 2 and ready for flushing. The level of the water 7 is, as is apparent, slightly below the overflow opening 18 of the tube 13. A lid 12 is arranged above this opening 18, which is fixed to the yoke 15 according to FIG. 2 and is preferably formed thereon.

the cap 19 is positioned above the opening 18.

for example 6 mm. In particular, as shown in Figure 3, the edge of the cap 19 extends beyond the edge 22 of the tube 13. Thus, an annular gap 23 is formed between the edge 22 and the cap 19. The diameter B of the circular cap 19 is preferably approximately 35 mm. The lid 19 is preferably closed, but this is not a requirement. The cap may also be replaced by another element. It is essential that this partially covers the opening 18 and fulfills a function which will be explained below.

In Fig. 2, the flush tank is overfilled, for example, due to a defect in the inlet valve 1. With a continuous inflow of 0.28 l / sec, the backflow height A is stabilized at 15 mm. Above the rim 22, the flushing water 2 is received by an annular gap 23 under the cap 19 and through the opening 18 into the cavity of the pipe 12. The admixture of air in the cavity 21 is far reaching compared to the tube 13 without the cap 19

-4znížené. The cross-section D of the tube 13 can therefore be smaller at a given drainage rate than with a flush cistern without a cap 12. The diameter E in the exemplary embodiment is 23 mm. With this diameter, a maximum backflow height A of 15 mm can be maintained at the above mentioned inflow.

If the flushing water supply to the cistern 1 is interrupted, the backflow height A is decreased and the water level 7 eventually drops to the edge of the pipe 22. Due to the drainage capacity of the pipe 13 the backflow height A decreases according to Figure 4. height 5 mm.

Since, unlike a conventional flush tank, only a comparable simple one can be made of plastic, it costs almost no weight. However, the cap 19 may also be molded to the yoke 12 so that no additional part is formed. Since this standard can be met by a substantially slimmer pipe 13, substantial material savings are possible and the free space in the container body 2 can be increased accordingly.

The overflow tube 13 is simultaneously a valve tube in an exemplary embodiment. However, an embodiment is provided in which the overflow pipe 13 is not a valve body and is firmly attached to the bottom 2 of the container body 2.

an add-on part 12 that does not have additional manufacturing parts

Claims (5)

PATENT CLAIMS A flushing cistern with a tank body (2) and a lid (3) in which a drain kit (11) is located. an inlet valve (4) having an overflow opening (18) having an overflow opening above the water level (7), in which the overflow tube (13) has means (19) above the water level which, when overfilled the reservoir bodies (2) reduce air access at the overflow opening (18) to the overflow tube (13) and increase the outflow performance by generating a substantially enclosed flow in the overflow tube cavity (21). The cistern according to claim 1, characterized in that the means (19) have a cap (19) which is fixed at a certain distance above the overflow opening (18). Flushing cistern by claim 2 characterized by that the lid / 19 / is a disc-shaped element. The cistern according to claim 2, characterized in that it extends beyond the lateral upper edge (22) of the overflow or 3, the lid (19) of the tube (13). 5. The cistern according to claim 1, wherein an annular gap (23) is formed between the upper tube (13) and said means (19). The cistern according to one of claims 2 to 5, characterized in that the distance (C) between the cap (19) and the upper edge (22) of the overflow The tube (13) is approximately 6 mm. The cistern according to one of the claims, characterized in that the means (19) are shaped to the caliper (15).