Controlled circulation incubator

摘要

Described herein is a controlled circulation incubator device having a plurality of plate receiving trays held by a tray bracket. Heated air is circulated by a blower and heater assembly around the trays held by the tray bracket and the temperature of the flowing heated air is sensed by a thermister included in a temperature controller circuit. The termister is coupled in a circuit so that its resistance determines the amount of heating provided by the heater portion of the blower and heater assembly. Each of the trays have a front lid and a back lip and the plurality of trays are offset from one another within the confines of the incubator device. The angle of the back lip and the amount of offset are selected so that each of the back lips are positioned in a generally planar surface. This causes the front lip, which extend at a slight angle from the receiving trays, to extend into the circulating air stream and air is forced between adjacent trays to heat the contents held by the trays. At the backside of the trays a low pressure area appears, further forcing air across the trays. The package of the incubator is fabricated of metal to promote heat loss so that the heating means can more accurately control the temperature. A variable resistor is included to allow different temperatures to be selected.