Heating control circuit and heating electrical appliance

Abstract

The invention discloses a heat control circuit, which comprises a relay serially connected with the heat control circuit and a control unit used for adjusting the heating power of the heat control circuit. The control unit is connected with the relay.The invention provides a heat control circuit, which can provide a uniform heating process so as to protect the relay from damaging.The invention also provides a heat control circuit which can acquire uniform heat process so as to adjust the heating power of the heat circuit.The invention also provides a heating electrical appliance, which can provide a uniform heating process so as to protect the relay from damaging.The invention also provides another heating circuit which can acquire uniform heat process so as to adjust the heating power of the heating circuit.

Description

technical field [0001] The invention relates to the field of heating appliances, in particular to a heating control circuit and heating appliances. Background technique [0002] At present, heating appliances such as clothes dryers, water heaters, and electric ovens generally realize the heating function by electrically heating heating wires. The usual control circuit of existing heating appliances such as figure 1 shown. [0003] The control circuit of the existing heating appliances usually uses the action of the relay to control the heating process. Simply using relays to control the heating power will easily lead to uneven heating process. Since the heating circuit is heated at full power when the relay is closed, the heat is large; but when the relay is turned off, it does not heat at all. There is simply no way to get a uniform heating process other than full power heating. [0004] If the heating appliance needs to change the heating power, the usual method is to...

AI Technical Summary

Problems solved by technology

If the relay is frequently and quickly turned on and off to achieve basically uniform heating, but because the relay has a limited number of actions, the relay will be damaged quickly

At the same time, since the intermittent action of the relay operates under electrified conditions, the relay contacts will spark

This will cause ablation of the relay contacts, resulting in rapid damage to the relay

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