Patent ID: 7810340

Claim:
A quick freezing apparatus comprising: a freezing store including a door for bringing in or taking out an object-to-be-frozen; a freezer capable of lowering a temperature inside the freezing store to a temperature equal to or less than approximately −30 degrees centigrade; a pressure regulator capable of adjusting a gas pressure inside the freezing store; and a ventilator for sending cold air at a wind velocity of 1 to 5 m/sec toward the object-to-be-frozen placed inside the freezing store, wherein the pressure regulator comprises a pressurizer for increasing the inside gas pressure to a pressure equal to or more than atmospheric pressure by supplying a pressurized gas into the freezing store, and a depressurizer for decreasing the inside gas pressure to a pressure equal to or less than the atmospheric pressure by drawing the inside gas, and wherein the pressure regulator includes an actuation controller for detecting the temperature inside the freezing store, if the detected inside temperature is equal to or more than a predetermined temperature, then actuating the depressurizer to decrease the inside gas pressure to a pressure equal to or less than the atmospheric pressure, and when the inside temperature drops below the predetermined temperature, stopping the depressurizer and actuating the pressurizer to increase the inside gas pressure to a pressure equal to or more than the atmospheric pressure.