Two Kinds Of Heat Preservation Type Automatic Electric Pressure Cooker Principle And Repairing Circuit

Published:2011/7/29 6:40:00 Author:Robert | Keyword: Heat Preservation, Automatic, Electric, Pressure Cooker, Principle, Repairing | From:SeekIC

The picture shows the two kinds of heat preservation type automatic electric pressure cooker principle and repairing circuit. 1.Yongxing brand DYB50-100 type electric pressure cooker.(1)The principle of the circuit.The circuit is shown in picture 1. When it connects the power supply, clockwise rotating the timer (electric type) PT to an adequate pressure-keeping stage, and the PT contactor would be closed. So the 220V AC power would be added on the main heating loop circuit which is composed of heating temperature control device ST1, heat preservation temperature control device ST2, main heater EH1, over-heat fuse FU and so on. When the heating indication lamp HL1 is bright, the EH1 would heat and the temperature in the cooker would increase. When it gets to working pressure 85kPa, ST2, ST1 would be disconnected separately to disconnect the main heating loop circuit's power source. The HL1 would be off and the EH1 would stop heating. At this time the pressure-keeping loop circuit, which is composed of pressure-keeping heating device EH2, PT, EH1 and FU, would heat.



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