CN101636014A

CN101636014A - Low power consumption standby circuit device of induction cooker

Info

Publication number: CN101636014A
Application number: CN200910183903A
Authority: CN
Inventors: 史祖匡; 张铸; 邵军; 沈敏
Original assignee: SUZHOU CHUNHE ELECTRIC CO Ltd
Current assignee: SUZHOU CHUNHE ELECTRIC CO Ltd
Priority date: 2009-08-12
Filing date: 2009-08-12
Publication date: 2010-01-27

Abstract

The invention relates to a low power consumption standby circuit device of an induction cooker, which comprises a filtering circuit, a main loop, a control circuit, a direct current power supply and an SCM, wherein the input end of the filtering circuit is electrically connected with an alternating current power supply, and the output end of the filtering circuit is electrically connected with the main loop; the SCM controls the main loop by the control circuit; the filtering circuit is electrically connected with the direct current power supply by a diode D2; the direct current power supply supplies a power supply to the SCM and the control circuit; a single-pole double-throw switch K1 is arranged between the alternating current power supply and the filtering circuit; a contact point of the switch K1 is electrically connected with the direct current power supply; a switch K2 is arranged between the direct current power supply and the control circuit; and the switch K1 and the switch K2 are respectively controlled by the SCM. The switch K1 and the switch K2 are arranged in the circuit, and the filtering circuit, the main loop and the control circuit are in a power-on state during working and in a power-off state during standby, thereby reducing the standby power consumption and saving energy resources.

Description

A kind of low power consumption standby circuit device of induction cooker

(1) technical field

The present invention relates to electromagnetic oven, be specially a kind of low power consumption standby circuit device of induction cooker.

(2) background technology

Holding state is meant that machinery equipment quits work, but power supply still is in the state of connection.The standby energy consumption of electronic equipment and household electrical appliance has been the major part of waste of energy.Domestic, the electromagnetic oven product standby power that the energy efficiency grade is 1 grade requires to be 2W.International Energy Agency (IEA) has been initiated energy-conservation proposal to global electric equipment products manufacturer and distributors, and target is by 2010, and the standby energy consumption of all electric equipment products of the whole world is all reduced in the 1W.

The circuit of existing electromagnetic oven as shown in Figure 1, it comprises filter circuit 1, major loop 2, control circuit 3, DC power supply 4 and single-chip microcomputer 5.During standby, though electromagnetic oven stops heating, filter circuit 1, major loop 2 and control circuit 3 all are in on-state, still at consumed power, thereby cause the waste of the energy.

(3) summary of the invention

The present invention is directed to the problems referred to above, a kind of low power consumption standby circuit device of induction cooker is provided, use low, the saves energy of electromagnetic oven stand-by power consumption of this circuit.

Technical scheme of the present invention is such: it comprises filter circuit, major loop, control circuit, DC power supply and single-chip microcomputer, the input of filter circuit is electrically connected with AC power, its output is electrically connected with major loop, single-chip microcomputer is controlled major loop by control circuit, filter circuit is electrically connected with DC power supply by diode D2, DC power supply provides power supply to single-chip microcomputer and control circuit, it is characterized in that: be provided with single-pole double-throw switch (SPDT) K1 between described AC power and the described filter circuit, another contact of K switch 1 is electrically connected with described DC power supply, be provided with K switch 2 between described DC power supply and the described control circuit, described K switch 1 and K switch 2 are respectively by described Single-chip Controlling.

The further technical scheme of the present invention is: described K switch 1 is the change type relay; Described K switch 2 is a triode; Be provided with diode D1 between described K switch 1 and the described DC power supply.

The present invention is provided with K switch 1 and K switch 2 in circuit, make filter circuit, major loop and control circuit be in "on" position when work, is in off-position when standby, thereby reduces stand-by power consumption, energy savings.

(4) description of drawings

Fig. 1 is the electrical principle block diagram of existing electromagnetic oven;

Fig. 2 is an electrical principle block diagram of the present invention.

(5) embodiment

As shown in Figure 2, the present invention is a kind of low power consumption standby circuit device of induction cooker, and it comprises filter circuit 1, major loop 2, control circuit 3, DC power supply 4 and single-chip microcomputer 5.The input of filter circuit 1 is electrically connected with the 220V AC power, and AC power is strobed.The output of filter circuit 1 is electrically connected with major loop 2, for major loop 2 provides power supply.Single-chip microcomputer 5 is by control circuit 3 control major loops 2.Filter circuit 1 is electrically connected with DC power supply 4 by diode D2, and DC power supply 4 provides power supply to single-chip microcomputer 5 and control circuit 3.

Improvements of the present invention are: be provided with single-pole double-throw switch (SPDT) K1 between 220V AC power and filter circuit 1, another contact of K switch 1 is electrically connected with DC power supply 4, be provided with K switch 2 between DC power supply 4 and the control circuit 3, K switch 1 and K switch 2 are respectively by Single-chip Controlling.K switch 1 makes filter circuit 1, major loop 2 and control circuit 3 be in "on" position when working with the setting of K switch 2, is in off-position when standby, thereby reduces stand-by power consumption, energy savings.

Preferably, K switch 1 can be for the change type switch, such as relay; K switch 2 can be electronic switch, such as triode.

Be provided with diode D1 between K switch 1 and DC power supply 4, AC power provides working power for single-chip microcomputer 5 by diode D1 in the halfwave rectifier mode.

The operation principle of the present invention and the course of work are as follows:

K switch 1 and K switch 2 are controlled by single-chip microcomputer 5, are provided with drive circuit between single-chip microcomputer 5 and K switch 1 and the K2, and control switch K1 and K switch 2 are moved simultaneously.

During the electromagnetic oven standby, 1 position is got in the contact of K switch 1, and K switch 2 is in off-state.This moment, filter circuit 1, major loop 2 and control circuit 3 were in the no power state, because not power supply and consumed power not.AC power provides working power for single-chip microcomputer 5 by diode D1 in the halfwave rectifier mode.Under this state, have only single-chip microcomputer 5 and DC power supply 4 consumed powers, the stand-by power consumption of electromagnetic oven can drop to below the 0.5W, meets the energy-conservation proposal of International Energy Agency (IEA).

During electromagnetic oven work, single-chip microcomputer 5 output high level, 2 positions are got in K switch 1 contact, this moment, AC power was powered with way of full-wave rectification, while K switch 2 closures, and filter circuit 1, major loop 2 and control circuit 3 are in "on" position, normal power supply, the electromagnetic oven operate as normal.

The present invention also can be used for other similar electronic equipment and household electrical appliance.

Claims

1, a kind of low power consumption standby circuit device of induction cooker, comprise filter circuit, major loop, control circuit, DC power supply and single-chip microcomputer, the input of filter circuit is electrically connected with AC power, its output is electrically connected with major loop, single-chip microcomputer is controlled major loop by control circuit, filter circuit is electrically connected with DC power supply by diode D2, DC power supply provides power supply to single-chip microcomputer and control circuit, it is characterized in that: be provided with single-pole double-throw switch (SPDT) K1 between described AC power and the described filter circuit, another contact of K switch 1 is electrically connected with described DC power supply, be provided with K switch 2 between described DC power supply and the described control circuit, described K switch 1 and K switch 2 are respectively by described Single-chip Controlling.

2, a kind of low power consumption standby circuit device of induction cooker according to claim 1 is characterized in that: described K switch 1 is the change type relay.

3, a kind of low power consumption standby circuit device of induction cooker according to claim 1 is characterized in that: described K switch 2 is triode.

4, a kind of low power consumption standby circuit device of induction cooker according to claim 1 is characterized in that: be provided with diode D1 between described K switch 1 and the described DC power supply.