IP Library Granted Patent US 8,440,025
Granted Patent B2
US 8,440,025 · App. 12/674,718 · Granted May 14, 2013

Water-conducting domestic appliance

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Quick Facts
Patent No.
US 8,440,025
App. No.
12/674,718
Granted
May 14, 2013
Kind
B2
Abstract

A water-conducting domestic appliance having a drain pump, a controller to activate the drain pump, and a water safety switch that has a first switch position to react to escaping water, wherein the water safety switch is connected to the controller. If a fault causes water to escape, the water safety switch switches into the first switch position so as to connect the controller to an electrical mains.

Claims (22)

1. A water-conducting domestic appliance, comprising:

a drain pump;

a controller to activate the drain pump; and

a water safety switch having a first switch position to react to an escape of water, the water safety switch connected to the controller and independently controlled by the controller;

wherein, if a fault causes the water to escape, the water safety switch is structured to switch into the first switch position to connect the controller to an electrical mains.

2. The water-conducting domestic appliance of claim 1 , wherein the water-conducting domestic appliance is one of a dishwasher and a washing machine.

3. The water-conducting domestic appliance of claim 1 , further comprising a main switch, wherein the controller is connected to the main switch to switch the water-conducting domestic appliance at least one of on and off.

4. The water-conducting domestic appliance of claim 3 , wherein, when the main switch is switched on, the main switch connects the controller to the electrical mains.

5. The water-conducting domestic appliance of claim 3 , wherein a terminal electrically connects the main switch and the water safety switch to the electrical mains.

6. The water-conducting domestic appliance of claim 1 , wherein the water safety switch has self-diagnosis capabilities.

7. The water-conducting domestic appliance of claim 6 , wherein the water safety switch has a first contact assigned to the first switch position, a second contact assigned to a second switch position, and a switching element to switch the water safety switch between the first switch position and the second switch position; wherein a first connection to the controller is assigned to the switching element; wherein the first contact has a connection to the electrical mains; and wherein a second connection to the controller is assigned the second contact.

8. The water-conducting domestic appliance of claim 1 , wherein the water safety switch has reset means to switch a switching element into a second switch position.

9. The water-conducting domestic appliance of claim 8 , wherein the reset means is one of a spring and a magnet.

10. The water-conducting domestic appliance of claim 1 , further comprising a signaling device that is electrically connected to the controller and that is activated in the first switch position of the water safety switch.

11. The water-conducting domestic appliance of claim 10 , wherein the signaling device is one of an acoustic signaling device and an optical signaling device.

12. The water-conducting domestic appliance of claim 1 , further comprising a water connection and an electromagnetically-controlled inlet valve arranged at the water connection of the domestic appliance, the electromagnetically-controlled inlet valve electrically connected to the controller and powered off and closed in the first switch position of the water safety switch.

13. A method for controlling a water-conducting domestic appliance, the method comprising:

checking a water safety switch of the water-conducting domestic appliance;

in the event that water escaping from the water-conducting domestic appliance as a result of a fault is detected, controlling the water safety switch in accordance with a program that includes at least one program step in which the water is pumped out; and

wherein the water safety switch is monitored independently of a switch state of the water safety switch.

14. The method of claim 13 , wherein the water safety switch is checked for operability one of continuously and at intervals.

15. The method of claim 13 , wherein a drain pump of the water-conducting domestic appliance is activated at intervals.

Assignments (3)
CORRECTIVE ASSIGNMENT TO REMOVE USSN 14373413; 29120436 AND 29429277 PREVIOUSLY RECORDED AT REEL: 035624 FRAME: 0784. ASSIGNOR(S) HEREBY CONFIRMS THE CHANGE OF NAME. Recorded Jun 19, 2015
From: BSH BOSCH UND SIEMENS HAUSGERÄTE GMBH
To: BSH HAUSGERÄTE GMBH
Reel/Frame 036000/0848 →
CHANGE OF NAME Recorded May 11, 2015
From: BSH BOSCH UND SIEMENS HAUSGERÄTE GMBH
To: BSH HAUSGERÄTE GMBH
Reel/Frame 035624/0784 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 24, 2010
From: CHRISTMANN, JENS; HERING, REINHARD; ROSENBAUER, MICHAEL; WAGNER, FRANZ-JOSEF
To: BSH BOSCH UND SIEMENS HAUSGERAETE GMBH
Reel/Frame 023980/0267 →