Bsh Bosch Und Siemens Hausgeraete Gmbh

Bsh Hausgeraete Gmbh

Bsh Bosch Und Siemens Hausgerate Gmbh

Bsh Hausgerate Gmbh

Peter Schweier

Michael Georg Rosenbauer

Georg Curtius

Reinhard Hering

Martin Stickel

Bruno Reiter

Franz-Josef Wagner

Bernd Hesterberg

Jens Christmann

Markus Gram

Manuel Otto

Michael Weisskopf

A dishwasher method and apparatus providing an algorithm varying the speed of the recirculation pump that recirculates washing liquor present in the washing compartment so as to assure quiet pump operation is disclosed. The speed of the recirculation pump is varied by a control device that carries out the washing cycle. A true-running monitoring unit checks the operation of the recirculation pump. During a fill phase of the washing cycle, an inlet valve is opened, the recirculation pump is switched on and the algorithm provides stepped variation of the recirculation speed using a default value step, a test step in which a true running check is performed, and a modification step in which the default value is modified in response to the result of the test step, for use in the next iteration of the algorithm.

Dishwasher with a dynamic filling sequence

A circuit arrangement is provided for protecting from overheating a heating element whose resistance value is a function of its temperature. The circuit arrangement includes a power supply, a switch, and a switch control circuit, a current sensor providing a signal proportional to the current flowing through the heating element, and a first scaling device whose output provides a signal proportional to the supply voltage of the heating element. An evaluation circuit compares the difference signal determined by a first detector having an output that provides a difference signal formed from the signals of the current sensor and the first scaling device with a reference signal and the switch control circuit can be switched from a conducting state when the switch control circuit is in a first state to a non-conducting state when the switch control circuit is in a second state.

Circuit arrangement for protection of a heating element from overheating heating device and method for fused protection of the heating device

A domestic appliance having a door and a door position detector. The door position detector detects an open or closed position of the door and provides a respective signal when the door is in the open or closed position. A monitoring circuit may be connected to the door position detector to check the operability of the door position detector.

Domestic appliance with a self-diagnosing door lock position detection device

A dishwasher with a system for filling level recognition may be achieved which reliably determines the fluid level inside the dishwasher without the use of moving parts, whereby the dishwasher is provided with at least one capacitive filling level sensor for recognition of the fluid level of the rinsing fluid contained in the dishwasher, the electrical capacitance of which changes depending on the height of the fluid level. The fluid level in the dishwasher can thus be reliably determined without the need for moving parts and merely by the use of electronic components.

Dishwasher with a system for recognition of filling level

A dishwasher with a system for filling level recognition may be achieved which reliably determines the fluid level inside the dishwasher without the use of moving parts, whereby the dishwasher is provided with at least one capacitive filling level sensor for recognition of the fluid level of the rinsing fluid contained in the dishwasher, the electrical capacitance of which changes depending on the height of the fluid level. The fluid level in the dishwasher can thus be reliably determined without the need for moving parts and merely by the use of electronic components. The system further permits a non-contact filling level recognition, whereby the filling level sensor and the rinsing fluid do not come into contact.

In a water-bearing household appliance with a liquid container filled through a valve in a liquid feed line, and in which a liquid filling level is detected for monitoring at least one safety level of a safety device, the safety device includes an optical light guidance system for reflecting a light beam by which the filling level is detected with the aid of a change in the reflection response on at least one reflecting site and is used to monitor the safety level. As an optical light guidance system, the safety device offers the advantage of dispensing with moving mechanical components&#x2014;for example, a float, a level switch, an operating lever, an operating rod, etc.&#x2014;to reduce the risk of mechanical defects that are associated with a substantial outlay on repair time and costs to a minimum or to completely eliminate the risk.

Growing community of inventors

Forheim, Germany

Peter Schweier