DE8230454U1 - Automatic washing machine or dishwasher with improved feed water circuit - Google Patents

Description

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Automatic washing machine or dishwasher with improved food water circuit

The control relates to a particular for the Automatic washing machine or dishwasher with an improved feed water circuit intended for domestic use.

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The applicant's 18 describes an automatic washing machine or dishwasher, whose feed water circuit has an inlet solenoid valve, a free jet section, a decalcifier and a salt container having. Letsterer has an outlet connected to the descaler and one with a container for dosing the water for regenerating the descaler connected inlet. The dosing tank is in free connection with the environment and with the free jet section. To the

2Q Speiaewasaerkreis also belongs to a pump of the Machine-controlled shut-off device to shut off the feed water circuit in one of the regeneration of the decalcifier preceding phase during which the intake solenoid valve is open.

j Such an arrangement eliminates the need to use a | additional solenoid valve for regenerating the drain | kalkers at one point of the water feed circuit, at which § rather high pressures prevail or those of salty | Water flows through it, which makes the function of a | such a solenoid valve could be affected. On the other hand, however, there is the possibility that, in the course of time, dirt will build up on the elastic bellows element trained shut-off element connected to the delivery side of the pump and its opening and Closing movements obstructed. As a result, such a bellows element has, albeit a conventional solenoid valve considering, still insufficient operational reliability.

The innovation creates an automatic washing machine or dishwasher with a feed water circuit * which is a controlled Has an inlet valve, a "free jet section and a decalcifier connected to the outlet of a salt container, furthermore with one with the inlet of the SaI zb ei's connected, in open connection with des? free environment as well as the container standing with the free jet section Dosing of the water to regenerate the descaler, and with a shut-off device controlled by a pump of the machine to at least partially shut off the feed water circuit in a phase during which the a ^ let valve is open, it is provided according to the innovation that the shut-off valve in a check valve the feed water circuit connected to the delivery side of the pump is *

The washing machine or dishwasher according to the innovation thus has a feedwater circuit, which is used to control the regeneration of the decalcifier instead of a failure-prone Solenoid valve just a simple, safe contains working and self-cleaning shut-off device.

In the following, an exemplary embodiment of the innovation is explained with reference to the drawing. Show it:

1 shows a schematic representation of a washing machine or dishwasher with a feed water circuit in FIG a preferred embodiment of the innovation,

Fig. 2 is a sectional view of a used in the embodiment of Fig. 1 Ab locking organs in the open Condition and

FIG. 3 is a sectional view of the shut-off device according to FIG. 2 when closed.

A washing machine or dishwasher shown in FIG. 1 has

a feed water line 9 »which has an external water connection A free jet section via an inlet solenoid valve 5 » 6, a decalcifier 11, a check valve 10 and a pressure connection of a drainage pump 20 a length tub 4 · Connects. In the case of a dishwasher the feedwater line can either be connected to a pressure connection of the drainage pump or a circulation pump be connected. With normal flow through the feedwater line 9, the check valve is located 10 in the open state shown in FIG.

Further, part of the feed water circuit of the machine, a salt container 12 having an outlet which i connected via a wei "teres check valve 15 with the descaler 11: ^15, and an inlet is softer connected via a line 1A with the bottom of the dosing container. 8 The dosing container 8 is, for example, of the type described in T) EOS ZA If3 by the Anraelderin and contains an open-topped catch 17 arranged below the free jet section 6 to catch the leaking water that occurs during normal operation. At the lower part, the collecting basin 17 is connected to a line 15 opening into the tub 4 via an outlet bore calibrated according to the amount of leakage water occurring at the free jet section.

How such a washing machine or dishwasher works is well known and therefore does not need to be

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to be described individually. All that needs to be mentioned is that the pump is running during a regeneration of the descaler immediately preceding the phase during which the inlet solenoid valve 5 is open by the (not shown) program control of the machine is started.

During this phase, the check valve 10 is of the Pump 20 off with one of the pressure in the feed water

line 9 applied opposite effective pressure, so that it is in the closed position shown in FIG occupies. As a result, the feed water outlet 9 is shut off, so that the entire νοώ water connection is flowing in The amount of water from the free jet section 6 reaches the collecting basin 17. Because this amount of water is greater is than that flowing through the bore 18, the collecting basin 17 overflows and the water fills the dosing tank 8 until it enters the tub via line 15 4 overflows.

After a certain period of time, the solenoid valve 5 closed and the pump 20 switched off so that the non-return valve 10 opens to regenerate the descaler 11 to initiate. The water contained in the dosing tank 8 flows through its own gradient over the Bath tank 12, the check valve 13, the decalcifier 11 and the check valve 10 in the housing of the pump 20. In the no final operation of the machine, the backward lag valve 10 continuously rinsed and cleaned by the water flowing through the feedwater line 9, see above that it works safely at all times.

The embodiment described above can be modified in various ways. For example, the feed water line 9 can be routed into the tub M- without going through the pump 20, as long as it is connected to a pressure connection of the pump.

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Claims (1)

1. Automatic washing machine or dishwasher with a feed water circuit, which has a controlled inlet valve, a price jet section and a decalcifier connected to the outlet of a salt container, further comprising one connected to the inlet of the salt container, in open communication with the free environment as well as with the Free jet section standing container for dosing the Water to regenerate the descaler, and with a shut-off device controlled by a pump of the machine for at least partial shut-off of the feed water circuit in a phase during which the inlet valve is open is, characterized in that the shut-off device has a check valve (1O) in the one with the ¹ · (II .11, • * * I * * * itf ι ι ι. * <I III! ■ · · * • ■ • ■ · * it a t t III »I 111 Il »' 1 feed water circuit connected to the front of the pump (20) (9) is. 2- washing machine or dishwasher according to claim 1, characterized 5 characterized in that the check valve (10) on the inlet side of the connection with the front der.Pump (20) is arranged in the feedwater circuit (9) and is open when the flow is normal.