US 11,982,470 B2
Method and device for supplying cool fluid
Joseph Hadash, Lapid (IL)
Assigned to INHALETECH LLC., Minneapolis, MN (US)
Filed by INHALETECH LLC., Minneapolis, MN (US)
Filed on Nov. 19, 2021, as Appl. No. 17/530,582.
Application 17/530,582 is a continuation in part of application No. PCT/IL2019/050577, filed on May 22, 2019.
Prior Publication US 2022/0146153 A1, May 12, 2022
Int. Cl. F25B 19/00 (2006.01); A61J 1/16 (2023.01); F25D 3/10 (2006.01); F25D 3/12 (2006.01)
CPC F25B 19/005 (2013.01) [A61J 1/165 (2013.01); F25D 3/10 (2013.01); F25D 3/12 (2013.01)] 18 Claims
OG exemplary drawing
 
18. A method for providing a stream of cool fluid and for cooling a volume or surface to a regulated low temperature, without employing a closed refrigeration cycle or using a compressor, and without external power supply, comprising
a) providing at least three chambers, a first chamber with an amount of liquid CO2, expanding said liquid CO2 to a second chamber via a micro valve, and driving by a blower said fluid to be cooled through said third chamber with an outlet;
b) measuring by a sensor the temperature of said fluid at said outlet;
c) providing a microprocessor with data and software, receiving signals at least from said sensor and sending instructions at least to said valve and said blower;
thereby providing the stream of cool fluid for cooling medical instruments or a biological item selected from sample, tissue, organ, or body, wherein the cooling may be performed once during an interrupted event or more times during several separate independent events, comprising starting and ending the cooling activity at different times or sites according to a need, while lowering the temperature of said item from ambient temperature by 20-90° C., and the stream of said fluid when being air, may have a flowrate of between 0.1-100 l/min.