Temperature monitoring device and domestic appliance comprising the temperature monitoring device
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Solution Overview
Problem
Existing temperature monitoring devices for household appliances lack precision and reliability in temperature measurement, particularly when monitoring objects whose temperature needs to be accurately recorded.
Innovation Solution
A temperature monitoring device with two temperature sensors, each partially enclosed by a sensor housing that biases them against a temperature recording plate using spring elements, enhancing measurement accuracy and reliability through redundancy and allowing dual functionality as a temperature control and overheating safety device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a temperature sensor is fully enclosed by a sensor housing for protection, then the reliability and protection of the sensor is improved, but the thermal contact and measurement precision deteriorates
Solution Approach 1:
The sensor housing is designed to only partially enclose the temperature sensor, creating an open structure that allows direct thermal contact between the sensor and the temperature receiving plate while still providing protection from other directions. This segmentation of enclosure provides both protection and thermal contact.
Solution Approach 2:
The sensor housing provides localized protection at specific areas of the sensor while leaving the thermal contact area exposed. This local quality approach ensures that protection is applied where needed without interfering with the thermal measurement function.
2Device complexity
If a single temperature sensor is used to simplify the device structure, then the device complexity is reduced, but the reliability and redundancy of temperature monitoring deteriorates
Solution Approach 1:
The system is designed with two temperature sensors from the outset, with one serving as a backup and validation for the other. This preliminary redundancy ensures that if one sensor fails or provides erroneous readings, the other can take over, maintaining system reliability without requiring complex failure detection and replacement procedures.
Solution Approach 2:
The second temperature sensor acts as a protective measure against sensor failure. By having redundant sensing capability built in beforehand, the system cushions against the harmful effect of single sensor failure, ensuring continuous reliable temperature monitoring.
3Stability of the object's composition
If the sensor housing fully encloses the temperature sensor, then the mechanical stability and positioning are improved, but the thermal conductivity and measurement accuracy deteriorates
Solution Approach 1:
The sensor housing encloses only portions of the temperature sensor while leaving the sensing tip and thermal contact area exposed. This segmented enclosure provides mechanical stability for the sensor body while maintaining thermal conductivity at the critical measurement interface.
Solution Approach 2:
The housing provides mechanical support and positioning stability at locations where structural integrity is needed, while deliberately leaving the thermal contact region open to ensure optimal thermal conductivity between the sensor and the temperature receiving plate.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution significantly improves the accuracy and reliability of temperature measurements and enables the device to perform dual temperature monitoring tasks, ensuring safe and precise temperature control in household appliances.
Implementation Method 1
a first sensor spring element (6) that is force-connected to the sensor housing (4) on the one hand and to the first temperature sensor (2) on the other, such that it permanently biases the temperature sensor against the temperature receiving plate
Data Source
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AI summary
The invention relates to a temperature monitoring device (1) for a domestic appliance (12), comprising a first temperature sensor (2), a sensor housing (4) which partly encloses the first temperature sensor (2), and a temperature sensor plate which is connected to the sensor housing (4). A first sensor spring element (6) is connected to the sensor housing (4) and to the first temperature sensor (2) in a force-transmitting manner so as to bias the first temperature sensor (2) against the temperature sensor plate. The invention additionally relates to a domestic appliance (12) comprising a temperature monitoring device (1) according to one of the aforementioned claims. The invention can be used to increase the precision and reliability of the temperature measurement of the temperature sensor.