| 摘要 |
PURPOSE: An air pressure control apparatus for a freezer is provided to circulate internal air and external air naturally by using a rotating unit. CONSTITUTION: An air pressure control apparatus for a freezer comprises a grill(10), a case(20), a fixing member(30), and a rotating unit(40). The grill comprises an inner grill(11) and an outer grill(12) installed inside of the freezer. First ventilating holes(11a) are formed on the bottom surface of the inner grill and the outer grill. Second ventilating holes(11b,12b) are formed on the one side surface of the first ventilating holes. The case covers an extended part(21b) of an inner case(21), and seals the inside of the inner case. The fixing member has a fixing frame(31). A flange(31a) of the fixing frame is inserted between the border surface of the inner grill and a flange(21a) of the inner case. The rotating device opens and closes vents(43) by rotating the rotating device with a first rotary plate or a second rotary plate. |
