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Multi-relay dual-power switching circuit and electric appliance

A technology for switching circuits and relays, which is applied in the direction of circuit devices, AC network circuits, electrical components, etc. It can solve the problems of mobile appliances that cannot be used for large distances, and the control circuits become more and more complicated, so as to achieve low heat preservation power and reduce output resistance. value, the effect of simplifying the circuit

Active Publication Date: 2020-02-21
GUANGDONG REAL DESIGN INTELLIGENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the advancement of technology, household appliances generally have multiple functions at the same time, such as heating and heat preservation. However, in the prior art, household appliances generally connect different heating elements by changing the frequency of the power supply or setting different circuits Change the output power, and then realize the heating or heat preservation function, but whether it is changing the frequency of the power supply or replacing a different circuit, the control circuit of the household appliance will become more and more complicated, and the household appliances are generally powered by the AC power supply through the plug, and the heat preservation Do not move electrical appliances over a large distance

Method used

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  • Multi-relay dual-power switching circuit and electric appliance

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Embodiment 1

[0032] Such as figure 1 As shown, the multi-relay dual-power switching circuit 1 disclosed in this embodiment includes several control switches, a first heating element R1, and a second heating element R2; when the several control switches are in the first state, the first The heating element R1 and the second heating element R2 are connected to an AC power supply in series through the plurality of control switches; when the plurality of control switches are in the second state, the first heating element R1 and the second heating element R2 The DC power supply is connected in parallel through the plurality of control switches.

[0033] In this embodiment, the first heating element R1 and the second heating element R2 are heat pipes.

[0034] Compared with the prior art, this embodiment uses the principle of resistance change in the circuit caused by series-parallel connection, and controls each heating element to connect to the AC power supply in series and to the DC power su...

Embodiment 2

[0058] This embodiment provides a footbath, which includes the multi-relay dual-power switching circuit 1 of Embodiment 1, which can be applied to the heating circuit and heat preservation circuit of the footbath. When the water in the footbath needs to be heated, the footbath The socket is connected to the AC power supply, and the foot bath is heated with high power to improve the heating efficiency; Insulation to prevent rapid cooling of the water in the foot tub.

Embodiment 3

[0060] This embodiment provides an electrical appliance, which includes the multi-relay dual-power switching circuit 1 of Embodiment 1. The household appliance can be an electric rice cooker, an egg cooker, and the like.

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PUM

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Abstract

The invention relates to the field of household appliances, in particular to a multi-relay dual-power switching circuit and an electric appliance. The multi-relay dual-power switching circuit comprises a plurality of control switches, a first heating part and a second heating part; when the control switches are in a first state, the first heating part and the second heating part are connected to an alternating current power supply in series through the control switches; when the plurality of control switches are in a second state, the first heating part and the second heating part are connected to a direct-current power supply in parallel through the control switches. According to the invention, the principle of resistance change in the circuit caused by series-parallel connection is utilized, and the plurality of control switches are used for controlling each heating element to be connected to the alternating current power supply in series and connected to the direct current power supply in parallel, so the function of outputting different powers by using the same heating element is realized, and the circuit is further simplified.

Description

technical field [0001] The invention relates to the field of household electrical appliances, in particular to a multi-relay dual-power switching circuit and electrical appliances. Background technique [0002] With the advancement of technology, household appliances generally have multiple functions at the same time, such as heating and heat preservation. However, in the prior art, household appliances generally connect different heating elements by changing the frequency of the power supply or setting different circuits Change the output power, and then realize the heating or heat preservation function, but whether it is changing the frequency of the power supply or replacing a different circuit, the control circuit of the household appliance will become more and more complicated, and the household appliances are generally powered by the AC power supply through the plug, and the heat preservation It is also not possible to move electrical appliances a large distance while ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00
CPCH02J3/00
Inventor 汪军方桦金成
Owner GUANGDONG REAL DESIGN INTELLIGENT TECH