JPS54133666A - Freezer refrigerator - Google Patents

Abstract

PURPOSE:To devise to change capacities of a freezing and a refrigerating chamber by providing a freezing chamber, a switching chamber, and a partition wall, and equipping a partition duct plate at a cold air blowoff part to the freezing chamber and a switching damper in a pressure chamber respectively to be operated by a changeover switch. CONSTITUTION:A switching damper 30 is set to connect a passage 28 with a pressure chamber 25 and to close a cold air blowoff port 24. The cold air is mainly blown off to a freezing chamber 5 through a duct 33, and the remainder is returned to a cooler 11 through a passage 26, the pressure chamber 25, and the passage 28. The cold air in the freezing chamber 5 is sucked into a passage 21 through a cold air suction port 20 on a partition wall 10a, and distributed by a damper thermostat 23; on one way it is returned to the cooler 11 from the pressure chamber 25, and on another way it cools a freezing-refrigerating chamber 6 to be returned respectively to the cooler 11 through a suction port 29, making the switching chamber 6 a refrigerating chamber. The chamber can be switched over to a freezing chamber by the operation of the switching damper 30. Since a changeover switch 35 is cut off by this operation, frosting-preventing heaters 34 and 35 are cut off for preventing insufficient cooling.