Heating control circuit and heating electrical appliance

A technology for heating control circuit and control circuit, which is applied in ohmic resistance heating, temperature control by electric method, electric heating device, etc., can solve the problems of relay damage, relay contact ablation, limited number of relay actions, etc., to reduce costs Effect

Active Publication Date: 2008-07-02
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Heating control circuit and heating electrical appliance
  • Heating control circuit and heating electrical appliance
  • Heating control circuit and heating electrical appliance

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Embodiment Construction

[0030] The invention provides a heating control circuit, which can ensure the uniformity of heating, protect the relay from damage, and prolong the service life of the relay.

[0031] The invention relates to a heating control circuit, comprising a relay and a control unit connected in series in the heating circuit. The control unit is used to adjust the heating power of the heating circuit.

[0032] The control unit includes a control signal receiving unit and a control subunit.

[0033] The control signal receiving unit receives a first external control signal and sends it to the relay; the relay is closed and disconnected according to the first control signal; receives a second external control signal and sends it to the control subunit.

[0034] The control subunit adjusts the heating power of the heating circuit according to the second control signal received by the control signal receiving unit.

[0035] In order to enable those skilled in the art to better understand...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B1/02H05B3/00G05D23/19
Inventor 姜德志陈艳丽
Owner HAIER GRP CORP
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