Master thesis at Bosch Thermoteknik
The current project is about how to ensure that a heat-sensitive component has not been overheated during the brazing process.
The heart of a heat pump consists of a refrigerant circuit. This is built by joining a large number of components. Most often, requirements for tightness, mountability and economy leads to that the parts are brazed together. When brazing, large amounts of heat are added to the components, which are sometimes heat-sensitive. In order to be able to carry out the brazing process without destroying sensitive components, brazing fixtures with cooling are used.
The current project is about how to ensure that a heat-sensitive component has not been overheated during the brazing process.
It is often difficult to measure the temperature directly on the components during the brazing process. You can instead try to find other ways to measure, it can be, for example, the temperature of the cooling water, the temperature of the fixture itself or on the detail a bit from the brazing point.
The solution that is developed must be applicable to a large number of fixtures in production, this means that it must be robust, have the right accuracy and not be too expensive.
The workflow can look like this:
- Determine an appropriate pilot product
- Determine appropriate measurement technique / techniques.
- Design, purchase and build measuring equipment. (sensors and micro controller / single card computer?)
- Collect data
- Analyze data
Hopefully, based on the measurement data, a correctly performed brazing / cooling can be distinguished from one where components have been damaged or the correct brazing temperature has not been reached.
Contact persons
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At BOSH:
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Bosch Thermoteknik AB develops, manufactures and sells a complete range of heat pumps. Our main focus lies in the development of energy-efficient products with particular focus on renewable energy. We are about 500 employees in Tranås. Our most famous brands are Bosch and IVT.