DE2451822A1 - DISHWASHER WITH A FILTER STRAINER IN THE COLLECTOR - Google Patents

Description

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■ 3d3 Gtiiersloh C-srl-ÜSseis-Straßa - Telephone 88f

Dishwasher with a filter sieve in the collecting pot

The invention relates to a dishwasher with a collecting pot, each with a connecting piece for a circulating pump and for a drain pump and a filter screen, which the collecting pot in a suction space for the circulation pump and in divided a suction space for the drain pump.

Such dishwashers are known. However, they have the disadvantage that the washing result fluctuates very strongly. These fluctuations are partly due to the tolerances at the sealing point between the filter screen and the intake port caused by the drain pump. If the gap at this point is too large, the circulation pump will produce fine dirt particles sucked out of the dirt collecting space of the connection piece. These Dirt particles get onto the surface of the dishes with the rinse water and can get stuck there. Is the gap too narrow, however, so the dirt particles sucked through the sieve openings by the relatively powerful circulation pump can the drain pump can no longer be extracted and are deposited on the filter screen. The next time you rinse, this dirt becomes then detached from the filter screen again by the circulation pump and sprayed onto the dishes.

The object of the invention is to avoid these known disadvantages and to disclose a dishwasher which no dirt can be sucked out of the dirt collection space by the circulation pump and also from the The drain pump also allows the dirt particles to be sucked out of the suction chamber of the circulation pump.

609819/0617

For this purpose, the invention is characterized in that the suction space for the circulation pump and the suction space for the The drain pump is connected via a valve.

Further features of the invention are that the valve controls the flow from the suction chamber of the circulation pump to the suction chamber Drain pump allowed and the reverse flow blocked.

Two embodiments of the invention are shown schematically in the drawings:

Show it:

1 shows the collecting pot of a dishwasher with a ring valve, in side view and in section,

2 shows the collecting pot with a ball valve, in side view and in section.

The dishwasher, not shown, has a collecting pot 1. On the collecting pot 1 there is a connecting piece 2 and 3 each. arranged for a circulation pump and for a drain pump. In addition, there are filter sieves 4 and 4 'in the collecting pot 1. The filter screen 4 ¹ can be designed as a fine filter, while the filter screen 4 can be a fine filter. The collecting pot 1 is divided by the filter sieve into a suction space 5 for the circulation pump and into a suction space 6 for the drain pump. The suction space 5 is connected to the suction space 6 via a valve. The valve allows the flow from the suction chamber 5 to the suction chamber 6 and blocks the flow in the opposite direction. The valve can be designed as a float valve. In FIG. 1, the float valve is designed as a floating ring 7. In FIG. 2, the float valve is designed as a float ball 8.

- 3 6 0 9 8 1 9/0617

When the circulating pump sucks in rinsing liquid from the collecting pot 1 via the connecting piece 2, the rinsing liquid can only be sucked in ^{through the filter sieves 4 and 4 1.} No water can be sucked in from the dirt collecting space 9, since the floating ring 7 or the float ball 8 close the connection openings 10 and 11. It is particularly favorable if the swimming ring 7 or the float ball 8 have a specific weight of less than 1.

When the drain pump via the connecting piece 3, the rinsing liquid sucks out of the dishwasher, the washing liquid can be sucked out of the suction space 5 through the connecting openings 10 and 11, since the floating ring 7 and the float ball 8 the connection openings 10u. 11 release. The suction chamber 5 is completely emptied. Dirt residue can therefore do not lag behind. Since no dirty water from the drain pump is sucked out of the suction chamber 5 through the filter screen 4, no dirt / can deposit on the filter screen 4. That The wash result is always constant. It does not depend on the tolerances at the connection point of the filter sieve 4 with the collecting pot 1 affected.

The filter screen 4 can therefore be connected to the connecting piece 13 of the drain pump via a seal 12 or via a cone be.

The floating ring 7 can also be slidably connected to the annular part which carries the connecting openings 10, so that the entire unit with the filter screen 4 can be removed.

6 U 9819/0617 -4-

Claims (6)

- 4 claims Dishwasher with a collecting pot, one connection piece each for a circulation pump and for a drain pump and a filter sieve, which the collecting pot in each subdivided a suction space for the circulation pump and for the drain pump, characterized in that the suction space 5 for the circulation pump and the suction space 6 for the drain pump are connected via a valve. 2. Dishwasher according to claim 1, characterized in that the valve controls the flow from the suction chamber 5 allows the circulation pump to the suction chamber 9 of the drain pump and blocks the reverse flow. 3. Dishwasher according to claims 1 and 2, characterized in that the valve is designed as a float valve is. 4. Dishwasher according to claims 1 to 3, characterized characterized in that the float of the float valve is designed as a floating ring 7. 5. Dishwasher according to claims 1 to 3 »characterized in that the float of the float valve as Float ball 8 is formed. 6. Dishwasher according to claims 1 to 5, characterized in that the filter screen 4 has a seal or is connected via a cone to the connection piece 13 of the drain pump. 6U9819 / 0617