DE7821866U1 - DISHWASHER - Google Patents

Description

EBHZ- 78 /? 7 17.07.1 Ί7Ρ

ΙΠ / ru

Li c e η ί i a

Paterit-Verwa 1 tunfrs-GmbH

Frankfurt / Main

dishwasher

The innovation relates to a dishwasher with a circulation pump, inem Sp'il container with two crockery baskets arranged one above the other, ^{fed by the T} ""?. Via which the spray arms can be locked alternately one after the other on the circulating pump.

In a known dishwasher (DS-OS 22 "" 3 ^ 0) with an opul container, two crockery baskets arranged one above the other and two spray arms fed by a circulating pump, the spray jet pressure can be changed by adjusting a throttle provided in the pressure port of the circulating pump. This pump energy is dissipated and the S ^J ._ahlenstärke around the machine changed.

To in a dishwasher with two of one circulation pump fed spray arms with reduced water and energy consumption to achieve a good cleaning result, a method for cleaning dishes is known (DE-AS 24- 23 99Ό, in which at least during a rinsing

07/17/197 «

Ul / ga

it the spray arms alternately one after the other. Clock lines are connected to the circulation pump and the spray jet pause following a spray jet cycle of a spray arm measured for the duration of the softening of the soiling of the dishes previously sprayed by this spray yarn is.

The object of the innovation is to provide a dishwasher of the type mentioned at the beginning which is suitable for carrying out this method Kind to create without the ge with smaller water floods in the rinsing tank and weaker circulation pump alternating flushing that can be carried out through the upper or lower spray arm, vibrations and annoying noise occur when controlling the water flow.

The solution to this problem in accordance with the innovation can be found in ^{the characterization of the protection claim Λ.}

Appropriate refinements are given in the subclaims.

According to the innovation, the water flow from the delivery line of the circulating pump via the inlet connection into the housing of the switching device and passed through the flap to the upper or lower spray arm or divided into equal or unequal Partial flows are directed to both spray arms, with no jerky opening due to the transition between the individual positions and closing the waterways takes place. The water flow is diverted from one direction of flow to the other continuously and without bumps, as there is always one waterway in the same area in the closing or opening areas of the waterways Extent is throttled or throttled like the other waterway. is locked.

EBHZ-78/57 07/17/1Q78

Ul / ga

Below is an embodiment of the innovation Hand of drawing explained. This shows a section through a switching device of the inventive Ge-Cchirrspülma machine.

The housing 1 of the switching device is connected by an inlet connection 2 to the delivery line of a circulation pump, not shown, of the dishwasher and has two drain connection 3 rzw. 4, which leads to an upper mi r 3pri: easy and a lower oprühftrm are connected. A two-armed flap 6 is pivotably mounted on an axis 5 of the housing. The preferably shorter flap arm can be pivoted by a control member 7 designed as a slide to control the waterway from the inlet connection 2 to one or, in the division of the waterway into partial flows, to both outlet connections 3 or '+. Depending on the position of the bores 8, 9 of the control member 7 with respect to the drain port 3 or 4, the Waseerwege to the Spruharmeη are blocked, throttled or released.

To change the position of the flap, the flap 6 has an opening that forms a bypass 10. In the flap position shown, the main water flow flows from the inlet connector 2 through the housing chamber ^Λ Λ via the bore 8 to the drain connector 3 and, for example, to the lower spray arm of the dishwasher. At the same time, via the bypass' OK, a back pressure can build up in the housing chamber 12 closed by the control element 7, which is higher than the flow pressure prevailing in the other housing chamber 11 and, acting on the longer valve arm, initiates the reversal of the valve ί. So that the reversal is carried out completely to the other end position of the flap 6,

7821866 iz. ti ti

KBHZ-78/37 07/17/1978

Ul / ga

nen on the control element 7 or on the energy storage flap, for example a spring, a snap member or the like. Act. Preferably the amount is:., The length ratio of the arms of the two-armed flap at least ^: 2. The time behavior of the reversal of the flap ^ is over the cross section of the bypass controllable. The control member, designed as a slide, is provided with a mechanical drive and an electromagnet Return spring or the like. Movable. Instead of a cap the bypass can also be formed by grooves or the like in the transition from the inlet connection to the housing, which are shown in FIG the end positions of the flap each time a pressure build-up in enable the closed housing chamber.

Claims (3)

EBHZ-78/37 I7.O7.I978 Ul / ga Protection requirements 1- dishwasher with a circulating pump, a washing compartment with two superposed crockery baskets, fed by the circulation pump, above or below each crockery basket rotatably mounted spray arms and a ^T Jmschalteinrichtung over which the spray arms alternately in succession to the circulation pump can be connected, are characterized in that the changeover device consists of a housing (1) connected to the circulating pump through an inlet nozzle (2) and two outlet nozzles (3, 4) with the supply lines to the upper or lower spray arm, in which an axle (5) has a Control element (7) actuatable flap (5) is pivotably mounted, which deflects the WaGse .- "flow from the Zu] on nozzle to one of the drainage nozzles, that for a steady transition when closing one and opening the other waterway, the flap opposite the Housing in the area of the inlet connection forms a bypass (10) and that the waterways via the outlet connection through the adjustable are control unit can be switched on and off. 2. Dishwasher according to claim 1, characterized in that the control member (7) in the housing (1) guided, the drain (3 and 4 ·) upstream slide Is, which is adjustable by a mechanical drive, an electromagnet with a return spring or the like. 3. Dishwasher according to claim 1, characterized in that a bore or in the flap (6) Like. The bypass (10) forms. 7821866 82.1178 ΞΒΗΖ-78/37 17-07-1978 Ul / ga 4. Dishwasher according to claim 1, characterized characterized in that in the transition of the inlet connector (2) to Housing (1) air gaps, grooves or the like. Are provided which, when the flap (6) is attached, a bypass to that of the Hold open the flap of each closed housing chamber (H or 12). 7821866 ÖZ.1I78