CONTROL METHOD OF COLD AIR OUTLET AMOUNT IN REFRIGERATION COLD STORAGE SHOWCASE

摘要

PURPOSE:To preclude the invasion of atmosphere from an opened opening into a case and prevent the temperature rise in the case by a method wherein a damper is provided in a cold air outlet port or a cold air circulating duct to regulate the outlet amount of cold air by the opening and closing operation of the damper. CONSTITUTION:When a door 11a, for example, among a plurality of doors 11a-11c is opened, a door opening and closing sensor 12a detects it and tilts dampers 13b, 13c provided so as to be corresponding to the closed doors 11b, 11c except the opened door 11a obliquely rearward and blockades an air outlet port 7, corresponding to the closed doors 11b, 11c, by the dampers 13b, 13c. As a result, cold air, sent to the air outlet port 7 from a cold air circulating duct 6, is sent out from the air outlet port 7, in which a damper 13a at a position opposed to the opened door 11a is not closed, whereby the amount of outlet air of the opening 2, in which the door 11a is opened, is increased. According to this method, the invasion of atmosphere into the showcase can be precluded.