Toaster having safety protection function

Abstract

The invention discloses a toaster having a safety protection function. The toaster comprises an electromagnet, a bipolar switch, a step-down rectifier circuit, a timing control circuit, a heating plate group and a relay, wherein the heating plate group consists of a plurality of heating plates which are connected in series; one end of the bipolar switch is connected with a power supply, and the other end of the bipolar switch is connected with the input end of the step-down rectifier circuit; the output end of the step-down rectifier circuit is connected with the input end of the timing control circuit; the output end of the timing control circuit is connected with a coil of the electromagnet; the coil of the relay is connected with the output end of the timing control circuit; and one end of a switch group of the relay is connected with the power supply, and the other end of the switch group of the relay is connected with the heating plate group. A start button is pressed accidentally or artificially, the start button and a switch starter cannot be raised, namely the coil of the relay loses power and the circuits of the heating plates are cut off when the toasting time reaches a preset value under the condition that the bipolar switch is switched on all the time, so that the toaster stops heating and the danger of fire is thoroughly eliminated.

Description

technical field [0001] The invention relates to a toaster, in particular to a toaster with safety protection function. Background technique [0002] A toaster is a small household appliance for baking small foods such as bread. As Chinese Patent No. is 200520100718.4, the utility model patent of a novel toaster is disclosed. When you need to bake bread, just press the start button, the bread tray will drive the bread downward, and the clamping wire mesh on both sides will clamp and fix the bread slice in the middle. After the set baking time, the heating plate can Toast the bread. When the start button is pressed down, the switch starter moves down together with the start button through the linkage mechanism, the switch starter turns on the bipolar switch in the circuit loop, and the multiple heating plates of the toaster in the circuit loop are energized and heated , at the same time, the electromagnet in the circuit loop will attract the iron-absorbing piece on the link...

AI Technical Summary

Problems solved by technology

However, during the working of the toaster, accidentally or artificially press the start button, so that the switch starter and the start button cannot rise, that is, the double-pole switch is always on, and the heating plate of the toaster will always be turned on. If heated by electricity, there is a risk of fire

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