Circuit for reducing standby energy consumption and frequency conversion household appliance

Abstract

The utility model discloses a circuit for reducing standby energy consumption, which comprises a power supply management part and a frequency conversion control part, and a switch tube is arranged between the power supply management part and the frequency conversion control part. According to the utility model, the electric energy loss of the frequency conversion control part under the standby working condition can be saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to variable frequency home appliance technical field, especially a kind of circuit and variable frequency home appliance for reducing standby energy consumption. BACKGROUND

[0002] In life, the variable frequency home appliance products such as refrigerator, air conditioner, range hood used in family, generally people's use habit is to access alternating current, then when needing, using remote control board or button, the device is awakened to work, the rest of time is in standby state;The circuit framework of traditional variable frequency home appliance is as shown in Figure 1 Need to be specially pointed out, the compressor of refrigerator, freezer product is not always working, only when detecting that temperature is higher than certain range, drive compressor to carry out refrigeration work, other time is in standby state, standby state time is much higher than refrigeration work time;These standby state, the control MCU, driving chip and so on power consumption element in circuit are always working, although these consumption is not high, but the accumulation of thousands of households, it is also a not small electric energy consumption. CONTENT OF UTILITY MODEL

[0003] To solve the problems in prior art, the utility model aims at providing a kind of circuit and variable frequency home appliance for reducing standby energy consumption, the utility model can save the electric energy loss of variable frequency control part under standby working condition.

[0004] To realize the above-mentioned purpose, the utility model adopts the technical scheme of a kind of circuit for reducing standby energy consumption, including power management part and variable frequency control part, switch tube is arranged between the power management part and variable frequency control part.

[0005] As the further improvement of the utility model, the switch tube includes high-low level input I / O end, photoelectric coupler OP1 and switch tube Q1, the high-low level input I / O end is connected with the base of triode V1, the emitter of triode V1 is connected with operating voltage VDD, the collector of triode V1 is connected with the input end of photoelectric coupler OP1, the output end of photoelectric coupler OP1 is connected with the gate of switch tube Q1, the drain of switch tube Q1 is connected with the power input end Vo of variable frequency control part, the source of switch tube Q1 is connected with the power supply output end Vi of power management part to the power supply of variable frequency control part.

[0006] As a further improvement of the utility model, the switch tube includes a signal input end Si, an optical coupler OP1, a DC / DC chip U1 and a switch tube Q1, the signal input end Si is connected with the input end of the optical coupler OP1, the output end of the optical coupler OP1 is connected with the enable end of the DC / DC chip U1, the enable end of the DC / DC chip U1 is grounded through a capacitor C1, the output end of the DC / DC chip U1 is connected with working voltage VCC and the gate of the switch tube Q1 respectively, the drain of the switch tube Q1 is connected with the power input end Vo of the frequency conversion control part, and the source of the switch tube Q1 is connected with the power supply output end Vi of the power management part to the frequency conversion control part.

[0007] The utility model also provides a kind of frequency conversion household appliance, including the circuit of the reduction standby energy consumption as described above.

[0008] As a further improvement of the utility model, the frequency conversion household appliance is frequency conversion refrigerator, frequency conversion refrigerator-freezer, frequency conversion air conditioner or frequency conversion range hood.

[0009] The utility model has the beneficial effect that:

[0010] The utility model increases a switch tube between power management and frequency conversion control part power supply connection, adjusts whether frequency conversion control part is powered on by controlling the on-off of switch tube, so as to save the power loss of frequency conversion control part in standby condition. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the circuit frame schematic view of traditional frequency conversion household appliance;

[0012] Figure 2 It is the circuit frame schematic view of frequency conversion household appliance in the utility model embodiment;

[0013] Figure 3 It is the circuit structure schematic view of switch tube of the utility model embodiment 1;

[0014] Figure 4 It is the circuit structure schematic view of switch tube of the utility model embodiment 2. DETAILED DESCRIPTION

[0015] The utility model embodiment is explained in detail below in connection with the drawings.

[0016] Embodiment 1

[0017] As Figure 2 And Figure 3 As shown in a kind of circuit of the reduction standby energy consumption, including power management part and frequency conversion control part, switch tube is arranged between the power management part and frequency conversion control part.

[0018] The switch tube in the embodiment comprises a high-low level input I / O terminal, an optical coupler OP1 and a switch tube Q1, the high-low level input I / O terminal is connected with the base of a triode V1, the emitter of the triode V1 is connected with a working voltage VDD, the collector of the triode V1 is connected with the input terminal of the optical coupler OP1, the output terminal of the optical coupler OP1 is connected with the gate of the switch tube Q1, the drain of the switch tube Q1 is connected with the power input terminal Vo of the frequency conversion control part, and the source of the switch tube Q1 is connected with the power supply output terminal Vi of the power management part to the frequency conversion control part.

[0019] The working principle of the embodiment is as follows:

[0020] The high-low level control is adopted in the embodiment, when the system is in standby state, the I / O signal input is low level, the V1 is cut off, so that the light emitting part of the OP1 does not work, the internal triode of the OP1 is cut off, the G terminal voltage of the P-MOS Q1 is pulled up, the Q1 is cut off, the electric energy of the Vi cannot be transmitted to the Vo through the Q1, the frequency conversion control part has no electric energy input, and no electric energy consumption is generated; thereby the electric energy consumption in the standby state is reduced.

[0021] When the system works, the I / O signal input is high level, the V1 is turned on, so that the light emitting part of the OP1 works, the internal triode of the OP1 is turned on, the G terminal voltage of the P-MOS Q1 is pulled down, the Q1 is turned on, the electric energy of the Vi is transmitted to the Vo through the Q1, the frequency conversion control part is powered on, and enters the pre-working state.

[0022] Embodiment 2

[0023] As shown in Figure 2 and Figure 4 A circuit for reducing standby energy consumption, comprising a power management part and a frequency conversion control part, characterized in that a switch tube is arranged between the power management part and the frequency conversion control part.

[0024] The switch tube in the embodiment comprises a signal input terminal Si, an optical coupler OP1, a DC / DC chip U1 and a switch tube Q1, the signal input terminal Si is connected with the input terminal of the optical coupler OP1, the output terminal of the optical coupler OP1 is connected with the enable terminal of the DC / DC chip U1, the enable terminal of the DC / DC chip U1 is grounded through a capacitor C1, the output terminal of the DC / DC chip U1 is respectively connected with a working voltage VCC and the gate of the switch tube Q1, the drain of the switch tube Q1 is connected with the power input terminal Vo of the frequency conversion control part, and the source of the switch tube Q1 is connected with the power supply output terminal Vi of the power management part to the frequency conversion control part.

[0025] The working principle of the embodiment is as follows:

[0026] The embodiment is controlled by passing signal line, when the system is on standby, Si does not send signal, OP1 light emitting part does not work, OP1 internal triode is cut off, U1 enables signal EN level to be low, U1 does not work, 3pin has no voltage output, the voltage of G of P-MOS Q1 is pulled up, makes Q1 cut off, the electric energy of Vi can not be transmitted to Vo through Q1, the frequency conversion control part has no electric energy input, and no electric energy consumption is generated, thereby reducing the electric energy consumption in standby state.

[0027] When the system works, Si signal input square wave signal, OP1 light emitting part works at square wave high level, OP1 internal triode is turned on with square wave signal high level, thereby the electric energy of Vi is transmitted to C1 through R2 and VD2, U1 enables signal EN level is high, U1 starts to work, 3pin outputs voltage VCC, VCC voltage V1 is turned on, the voltage of G of P-MOS Q1 is low, makes Q1 conduct, the electric energy of Vi is transmitted to Vo through Q1, makes the frequency conversion control part start to be electrified, enters pre-working state.

[0028] Embodiment 3

[0029] A variable frequency household appliance, comprising the circuit for reducing standby energy consumption as described in embodiment 1 or embodiment 2.

[0030] Explanation of symbols in the circuit diagram: Vi: power supply management part supplies power to the frequency conversion control output end; Vo: power supply input end of the frequency conversion control part; VDD: secondary measurement chip working voltage; VCC: primary measurement chip working voltage; Q1: switch tube; OP1: optocoupler; I / O: high and low level input end; Si: signal input end; So: signal output end.

[0031] The above-described embodiments only express the specific implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A circuit for reducing standby power consumption, comprising a power management section and a variable frequency control section, characterized by, A switch tube is arranged between the power management part and the variable frequency control part.

2. The circuit for reducing standby power consumption according to claim 1, wherein, The switch tube comprises a high-low level input I / O terminal, an optical coupler OP1 and a switch tube Q1, the high-low level input I / O terminal is connected with the base of a triode V1, the emitter of the triode V1 is connected with a working voltage VDD, the collector of the triode V1 is connected with the input terminal of the optical coupler OP1, the output terminal of the optical coupler OP1 is connected with the gate of the switch tube Q1, the drain of the switch tube Q1 is connected with the power input terminal Vo of the variable frequency control part, and the source of the switch tube Q1 is connected with the power supply output terminal Vi of the power management part to the variable frequency control part.

3. The circuit for reducing standby power consumption according to claim 1, wherein, The switch tube comprises a signal input terminal Si, an optical coupler OP1, a DC / DC chip U1 and a switch tube Q1, the signal input terminal Si is connected with the input terminal of the optical coupler OP1, the output terminal of the optical coupler OP1 is connected with the enable terminal of the DC / DC chip U1, the enable terminal of the DC / DC chip U1 is grounded through a capacitor C1, the output terminal of the DC / DC chip U1 is respectively connected with a working voltage VCC and the gate of the switch tube Q1, the drain of the switch tube Q1 is connected with the power input terminal Vo of the variable frequency control part, and the source of the switch tube Q1 is connected with the power supply output terminal Vi of the power management part to the variable frequency control part.

4. A variable frequency appliance, characterized by, The circuit for reducing standby power consumption comprises the circuit for reducing standby power consumption as claimed in any one of claims 1-3.

5. The variable frequency appliance of claim 4, wherein, The variable frequency household appliance is a variable frequency refrigerator, a variable frequency freezer, a variable frequency air conditioner or a variable frequency range hood.

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