DE1993652U - OVERFLOW DEVICE FOR WASHING MACHINES, IN PARTICULAR DISHWASHING MACHINES. - Google Patents

Description

overflow device for washing machines, in particular Dishwashers.

The innovation concerns an overflow device for washing machines, in particular industrial and household dishwashers.

In dishwashers, the overflow device does not have It is only a safety function, it also has the task of removing the floating foam during the wash cycles. This foam leads namely the light Schmiatzteile with yourself. Meet the usual overflow devices but not entirely satisfactory this latter task, especially when it comes to industrial dishwashers.

In fact, during the wash cycles, the build-up on the part the turbulence caused by the spray jets of water currents which hit the overflow device and a " Cause wave motion. Although thus the mean water level deeper than the overflow, the wave can exceed its height and exit through the overflow.

Because during the turbulent movement of the washing liquid during washing, the dirt particles in the washing liquid are in suspension and not float on it, can therefore relatively pure water with still effective

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Detergent overflow. In addition to this evil, there is also the fact that the washing liquid level in the washing container sinks, so that during the following rinse, during which the water in the washing container can be regarded as being at rest, the amount of washing let in for rinsing is insufficient to the height of the Overflow to be exceeded * The foam carrying the dirt particles, which now floats due to the relative calm of the water mass, does not overflow or is only partially drained away. At the start of a further wash, the remaining dirty foam layer is then set in motion, mixing with the water and again flowing out through the overflow in an amount equal to that of the water supplied and not overflowed during the previous wash . amount corresponds to. In repeating this Einscheinungen this inconvenience is always starlter and finally an ever greater amount of dirty foam will be in the wash tank, which forms the most polluted part of the washing liquid "On the other hand, during the wash cycles', as already mentioned, always relatively pure water, which still contains relatively effective laundry detergent, removed "

The task of the .N & ti & ixaig is to limit the outflow through the overflow to the rinse cycles alone / in order to keep the washing liquid cleaner and to save detergent. "... *;

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The task at hand is achieved with the help of an overflow device solved, which is intended for washing machines, in particular dishwashers, which have a washing container include, in which a water circulation is caused by means of water jets during the wash cycles, wherein According to the innovation, this overflow device has a tubular body extending upwards from the bottom of the washing container comprises, the side wall of which in the direction from which the water circulating as a result of the water jets comes, owns a higher sector.

An embodiment of the overflow device according to the innovation is explained in more detail with reference to the drawing explained. "V

Pig.1 shows an overflow device of a conventional type

on average,
2 shows the overflow device according to the invention

on average,
Fig.3 is a cross section along the line III-III of Fig.2

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4 illustrates schematically in view from above a washing tank in which the overflow device is arranged according to the innovation.

The washing container shown in Figure 4 comprises a carrier 14 for the crockery basket, a filter 10, a Ueberlatifvorrichtung 13 and a floor 1. Two tubes 9 and 8 are

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provided with nozzles from which the washing or rinsing jets emerge. In FIG. K, it is assumed that the pipe 9 has only two nozzles 15 and 16. These nozzles are aligned in such a way that the jet emerging from nozzle 15 causes water to circulate in the direction of arrow 17 and the jet emerging from nozzle 6 causes water to circulate in the direction of arrow 18. It can be assumed that the water circulation generally runs in the direction of arrow 12 in FIG. 4 during the wash cycle. It follows that the water hitting the overflow device during the wash cycle causes the water level to increase in the direction of the origin of the water and to lower the water level in the opposite direction.

An idler device of conventional design is shown in Fig ^.; 1 shown. This device consists of a tubular cylinder body Zy which protrudes from the bottom 1 of the WaschbehSlters upwards. The lower end ″ of the tubular body 2 is connected to a discharge line (not shown).

The upper end of the tubular body 2 is provided with a raised cover 3 * During the wash cycle, the water jets circulating from the nozzles 15 and 16 hit the body 2 so that there is an increased water level in the direction of the origin of the water k forms, while a lower water level 6 forms in the opposite direction

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of the construction of this overflow device causes the called increased water level an overflow of the water into the pipe body, so that at the end of the wash cycle a significant drop in the water level can be noticed is. This lowering of the water level is such that when the rinse water is subsequently introduced, only part of the floating foam and thus the dirt carried by it is carried away »with such a known per se Overflow device arises during washing ganges practically an overflow of relatively pure water, which still contains effective detergent, while the dirty foam is insufficiently removed during the wash cycle »

The idling device according to the innovation is shown in FIG. 2 γ and differs from that according to FIG. 1 in that the side wall of the body 2 has a closed sector 7, which is the upper one on the side from which the circulating water comes End of the body 2 with the cover 3 connects. Sector 7 owns in

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in practice a / semicircular cross-section so that half of the side wall of the body 2 is connected to the cover 3, while between the other half of this. There is a breakthrough on the side wall and the cover. The structure of the device according to the innovation is clear from FIG. 3, which illustrates the formation of the sector 7.

The lower end of the »side wall of the body 2 has a Incision I9, 'into which a projection 20 of the bottom is

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can grip, whereby the exact alignment of the overflow device with respect to the direction of the water circulation is allowed in such a way that the closed Sector 7 always comes to lie opposite the flow wave.

It goes without saying that several incisions 1 <? and A plurality of projections 20 can be provided in order to allow the overflow device to be aligned considerably to allow.

The method of operation of the device is clear from the description so far. While represents washes meets the shaft 12 against the closed Sektor'7 of the tubular body, is refracted at this and runs laterally in the direction of the arrows 5 *. (See Figure 13) on. The open half of the circumference of the overflow pipe, however, is in contact with the opposite low pressure zone 6, where the water level is lower and no overflow takes place. During the rinse cycle, the water is at rest and the water level therefore corresponds to the mean water level. As a result of the inlet of rinsing water, this water level, which was lower than the mouth of the overflow and did not decrease, is increased to such an extent that the foam and the light dirt particles which are now floating on the water can overflow.

The overflow device after the innovation is thus achieves that thanks to their special training and without adding additional parts during the washes

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Water drainage is prevented, the fact being exploited that would otherwise be a disadvantage would. Indeed, thanks to the special training the device exploits the currents caused by the strong jets of water during the washing process, which prevents the undesired overflow.

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Claims (3)

PROTECTION CLAIMS 1. Overflow device for washing machines, ■ in particular Dishwashers that comprise a washing container in which during the wash cycles through out nozzles exiting water jets a water flow is caused, characterized in that it consists of a, from the bottom of the washing container upwardly protruding tubular body, the side wall of which in the direction of the origin the water flow caused by the water jets has an elevated sector, 2. Overflow device according to claim 1, characterized in that that the tubular body has a substantially circular cross-section and that the cross-section of the raised sector is essentially semicircular. 3. Overflow device according to claims 1 and 2, characterized in that the tubular body with the help of Incisions at the lower end of its side wall, iivwhich Engage projections of the bottom of the washing container, can be aligned. -8th-