Mjölkkyl till espressomaskin
Impressive cooler
The project was made in cooperation with Coffee Queen AB, Arvika. The task was to develop and design a new cooler for the milk to Jura Impressa X9, an espresso machine. The good assistance with staff at Coffee Queen and engineers in China and at KPA in Karlstad led to a solution to the problem. It was a long road to get there, many different concepts was developed. When the day came to decide which concept to work with, the choice stood between two different technical solutions. Alt 1: The classic mini-fridge with today?s technique but a new design. Alt 2: Thermos with external cooling and a design which follows the X9. We choice alt 2 because of the fact that part of the production would fit Coffee Queens factory and therefore would it be possible to keep the costs down. The fact that it is a totally new idea in this business made it even more interesting and easier to make a choice. Both design and function is new, which make it interesting to keep working with. In cooperation with engineers in China there will be made a construction so they can make all necessary tests. This will probably happen autumn 2006. The new technique which the group has come up with is that all technique lays external, in a shell made of polypropen, which make it possible to clean the thermos in the dishwasher. Thermos: Vacuum-shaped in stainless steel with bottom of aluminium, covered with a protected surface, that works like a cold plate. Shell made of pp: shape-molding in polypropen and enclose the coolingsystem. This system are Peltiere, where the cooling is generated, spacer block and heat sink, where the heat are led away, and the fan which takes in cold air and blows out warm. The project has become much larger than Coffee Queen expected from the beginning so they will continue this work even after the students have done their share of the project. The new technique is the big question which requires more tests. These tests will carry through as soon as the group has sent all drafts of design and all info that has been gathered during the project. When the factory in China has made a construction of it they will send it to Coffee Queen and the project-group will be contacted to have a chance to take part of these tests.