Method and device for gas refrigeration

Claim 1

An open cycle system for taking ambient air and removing heat from one portion thereof and adding said heat to the remaining portion thereof to thus obtain an output of relatively cool air and an output of relatively hot air comprising: a first cylinder, a first piston, reciprocally received in said first cylinder and forming a first variable volume chamber therewith, a second cylinder, a second piston reciprocally received in said second cylinder and forming a second variable chamber therewith, a first duct communicating said first and second chambers, a heat capacitor means disposed intermediate the length of said duct, power means to reciprocate said pistons in an out-of-phase relationship with respect to one another, a first air intake duct communicated with said first chamber via a first valve seat opening, a second air intake duct communicated with said second chamber via a second valve seat opening, a hot air exit duct communicated with said first chamber via a third valve seat opening, a cold air exit duct communicated with said second chamber via a fourth valve seat opening, first, second, third and fourth valves, respectively, opening and closing said first, second, third and fourth valve seat opening, timing means sequentially opening and closing said valves to cause air compressed and heated in said first chamber to pass through said capacitor, where a portion of the heat is stored, and then into an expanding second chamber and to exhaust this relatively cooler air to said cold air exit duct, and said timing means sequentially opening and closing said valves to cause fresh air to mix with said relatively cooler and expanded air in said second chamber and to pass through said capacitor in the direction toward said first chamber and removing the compression heat stored therein and then into said first chamber and to exhaust whereby the relatively hot air is exited through said hot air exit duct.