Biolife Solutions. has been granted a patent for a method to enhance gas flow in a gamma-configured Stirling heat pump. This innovation involves using linear electric motors and a variable frequency AC power source to adjust piston amplitude, ensuring optimal performance and preventing gas bearing failure while maintaining cooling efficiency. GlobalData’s report on Biolife Solutions gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Biolife Solutions, Laboratory automation robots was a key innovation area identified from patents. Biolife Solutions's grant share as of June 2024 was 44%. Grant share is based on the ratio of number of grants to total number of patents.
Method for enhancing gas flow in stirling heat pump
The patent US12038214B2 outlines a method designed to enhance the working gas flow rate through gas bearings in a free piston, gamma configured Stirling heat pump. This system is thermally connected to a cooler's storage chamber and features a displacer and reciprocating pistons powered by linear electric motors. The method involves driving the pistons with a variable frequency AC power source, monitoring their amplitude of reciprocation, and adjusting the operating frequency based on the sensed amplitude. Specifically, if the amplitude falls below a predetermined activation threshold, the frequency of the AC power source is increased to prevent gas bearing failure, ensuring optimal performance of the heat pump.
The claims further detail a cyclical approach to this method, incorporating safety margins to prevent gas bearing failure. The selected activation amplitude is set above a defined failure threshold, and frequency adjustments are made incrementally, with specific ranges outlined for frequency changes. Additionally, the method includes provisions for reducing the operating frequency if the piston amplitude exceeds a deactivation threshold, ensuring that the system operates within safe limits. The process also incorporates thermal inertia time delays, ranging from 15 to 30 minutes, to prevent rapid fluctuations in frequency adjustments, thereby promoting stability in the heat pump's operation.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
