99results about How to "Improve thermodynamic performance" patented technology

The invention discloses a varied concentration mixed working medium auto-cascade refrigerator, comprising four parts of a normal concentration loop, a first varied concentration loop, a second varied concentration loop and a third varied concentration loop; the normal concentration loop is provided with a compressor, a condenser, a rectifying device, a regenerator, a first throttling element, an evaporator, a second throttling element and a gas-liquid separator which are connected in turn, wherein the first varied concentration loop is provided with a third disconnecting valve 13, a liquid storage tank 9 and a fourth disconnecting valve 14 which are connected in turn; the second varied concentration loop is provided with a first disconnecting valve 11, a gas holder 7 and a second disconnecting valve 12 which are connected in turn; and the third varied concentration loop is provided with a fifth disconnecting valve 15, a gas holder 8 and a sixth disconnecting valve which are connected in turn. The invention dramatically improves the dynamic operation characteristics of the refrigerator at the stage to start lowering temperature, and can realize lower refrigerating temperature and improving thermal dynamic efficiency of the refrigerator. The invention is particularly applicable to the occasions not only needing rapid temperature reduction, but also needing lower refrigerating temperature, thus having favorable application prospect.