Scouting New Technologies In The Global Patent Database
In the old days, an ice cellar was pretty much an isolated space in the ground with one cubic meter of ice and a drain. As the ice was placed in the winter it would melt down the drain all year long keeping the room 3-5 degrees just to be iced up again the next winter. A global analysis of cooling systems brings promising technologies from companies and research institutes.
Scanning the patent databaseWe start by searching for classification codes related to "cooling refrigerants". This allows us to quickly find the most related codes without having to perform a patent search. F25B and F25D (children included), last five years results in a good group of 34572 patents. In order to find the cooling technologies we harvest cooling effects on sites like ProductionInspiration on "cool solid". And then we start a text pattern analysis by which we can scan all cooling technologies through our patent pool: MoreInspiration also described magnetic cooling, however there’s about 184 to browse through.
Magnetocaloric EffectA strong field of a permanent magnet affects a magnetocaloric substance and orients itself alike. This causes the lattice of the substance to vibrate and the temperature to rise. By removing the magnetic field, the atoms return to their original ‘random’ orientation, and the substance cools down. Now by doing this process, but cooling down the magnetocaloric substance before the removing the magnetic field, (with coolant), allows the temperatures fall even lower. The hot coolant passes through the now colder substance, cooling down the coolant. The magnetocaloric substance heats up again and the process stats again, up to ten times per second.
Creating a new pool of "magnet*" in F25B and F25D, in last 5 years gives us 3541 patents. Running an applicants vs time analysis shows us a strong rise over the years with companies like Cooltech, General Electric and Toshiba in the lead.magnetic refrigeration system. The firm, together with six partners has rapidly advanced development of a commercial product, thanks to the backing of technology investors, including 20 million euros from the French government.