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NTC Sensor for Measuring a Temperature of a Heater of a Steam Generator

IP.com Disclosure Number: IPCOM000199569D
Published in the IP.com Journal: Volume 10 Issue 9B (2010-09-23)
Included in the Prior Art Database: 2010-Sep-23
Document File: 1 page(s) / 65K

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

In laundry appliances steam generators are often used to evaporate water. At present, the water temperature is measured in order to regulate the heat emission of the heating plate. Since the measured temperature is affected by evaporation effects and limited to the evaporation temperature of the water, a better resolution is desirable.

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BSH BOSCH UND SIEMENS HAUSGERĂ„TE GMBH

NTC Sensor for Measuring a Temperature of a Heater of a Steam Generator

Idea: Tomasz Kaczmarek, PL-Lodz

In laundry appliances steam generators are often used to evaporate water. At prese temperature is measured in order to regulate the heat emission of the heating pl measured temperature is affected by evaporation effects and limited to the eva
the water, a better resolution is desirable.

In the following an NTC sensor which is mounted on the outer surface of the heat
(NTC: Negative Temperature Coefficient). The sensor comprises an NTC thermisto temperature dependent semi-conducting ceramic material, e.g. a sintered metal oxid
other suitable NTC thermistor materials may be used. The use of an NTC sensor p
accurate temperature measurement by directly measuring the temperature of the h measurement is much less affected by evaporation effects which limit the measurab
the evaporation temperature of the liquid to evaporate. Therefore the sensor gu
higher precision in determining a genuine thermal overload of the heater. The NTC thermisto encapsulated in glass. This ensures a good electrical insulation and protection against environ influences like corrosion. The thermistor is connected to a wire partially covered b
made of one or more polyolefins. The protective slee

    nt, the water
ate. Since the poration temperature of

er is proposed r made of a
e. Of course, rovides a very eater body. This
le temperature to arantees a significantly r is...