Patent ID: 6983609

Claim:
A heat driven acoustic orifice type pulse tube cryocooler comprising: a driver ( 10 ) generating a flame radiating heat having a predetermined temperature, homogeneously heating a driving gas, and adiabatically compressing the driving gas so that the driving gas generates an acoustic having a predetermined frequency; a regenerator ( 20 ) receiving the driving gas output from the driver, and cooling the driving gas; a pulse tube ( 30 ) receiving the cold driving gas output from the regenerator, adiabatically compressing the driving gas, and generating the driving gas having a high temperature; a cold reservoir ( 60 ) receiving the high temperature driving gas output from the pulse tube, and adiabatically expanding the driving gas; a first hot heat exchanger ( 30 ) installed between the generator ( 20 ) and the pulse tube ( 40 ), and exchanging heat with the outside; a cold heat exchanger installed between the pulse tube ( 40 ) and the cold reservoir ( 60 ), and exchanging heat with the outside; and an orifice ( 62 ) installed within the cold reservoir, the orifice controlling an amount of the driving gas running between the cold reservoir ( 60 ) and the pulse tube ( 40 ) to constantly maintain a pressure of the cold reservoir; wherein the driving gas repeats the process of the compression and expansion centering around the pulse tube.