A method for controlling low power consumption in standby mode of washing machine

Abstract

The present invention discloses a low-power standby control method for a washing machine, which comprises the following steps: a 220VAC mains power is passed through a filter and connected to a main transformer-integrated computer board of the washing machine; the main transformer-integrated computer board of the washing machine is transformed by a switching power supply for use by various circuit modules; in standby mode, the power supply of a control circuit of each circuit module is cut off, and the main transformer-integrated computer board MCU enters a sleep mode; in a normal working mode, the main transformer-integrated computer board of the washing machine communicates with a display board through a serial port; in a standby state, all indicator lights on the display board are off, and no communication signal is sent to the main transformer-integrated computer board of the washing machine; within 10 minutes, the main transformer-integrated computer board of the washing machine cannot receive a communication signal and enters the sleep mode; when the washing machine needs to be started, the display board sends a signal to the main transformer-integrated computer board of the washing machine, and the serial port of the main transformer-integrated computer board of the washing machine cannot be executed. At this time, the sleep awakening port of the main transformer-integrated computer board of the washing machine is activated to awaken the main transformer-integrated computer board of the washing machine, so that the washing machine can operate normally.

Description

Technical field:

[0001] The invention relates to a method for controlling low power consumption in standby mode of a washing machine, and belongs to the field of washing machines. Background technology:

[0002] Washing machines are divided into standby zero power consumption and non-zero power consumption.

[0003] The traditional solution for achieving zero standby power consumption involves using micro switches on the control panel and building an appropriate circuit to achieve zero standby power consumption when the washing machine is not in use. This solution has a complex control circuit and is costly. It is also unsuitable for washing machines with touch buttons, as otherwise the machine will not power on in standby mode.

[0004] In the traditional solution of non-zero standby power consumption, the washing machine control board is always powered on, and the power consumption is relatively high, generally around 1W, or more than 1W, which cannot meet the requirement of low standby power consumption. The European standard in some European regions requires a standby power consumption of less than 0.5W.

[0005] Therefore, it is necessary to improve the existing technology to solve the shortcomings of the existing technology. Summary of the invention:

[0006] The present invention aims to solve the above problems in the prior art and provides a method for controlling the low power consumption of a washing machine in standby mode, which can reduce the power consumption of the entire washing machine in standby mode.

[0007] The technical solution adopted by the present invention is: a method for controlling low power consumption in standby mode of a washing machine, comprising the following steps:

[0008] Step 1: The 220VAC mains electricity passes through the filter and is connected to the washing machine's main transformer integrated computer board;

[0009] Step 2: The washing machine's main transformer integrated computer board undergoes voltage transformation through the switching power supply for use by each circuit module;

[0010] Step 3: In standby mode, cut off the power supply of each circuit module control circuit, and at the same time, the main transformer board MCU enters sleep mode;

[0011] Step 4: The display panel is powered by the washing machine's main transformer integrated computer board, with a voltage of 12V. In normal working mode, the washing machine's main transformer integrated computer board and the display panel communicate through the serial port. In standby mode, all indicators on the display panel are off, and no communication signals are sent to the washing machine's main transformer integrated computer board.

[0012] Step 5: The washing machine main transformer integrated computer board does not receive any communication signal within 10 minutes and enters sleep mode. When the washing machine needs to be turned on, the display panel sends a signal to the washing machine main transformer integrated computer board. The serial port of the washing machine main transformer integrated computer board cannot execute. At this time, the sleep wake-up port of the washing machine main transformer integrated computer board works to wake up the washing machine main transformer integrated computer board, and the washing machine can work normally.

[0013] Furthermore, the discharge resistance of the filter is 470K.

[0014] Furthermore, the power consumption of the filter is 0.12W.

[0015] Furthermore, each circuit module includes a water inlet valve module, a drain pump module, a heater module, a door lock module and a variable frequency motor circuit module. The high voltage of the water inlet valve module, the drain pump module, the heater module and the door lock module are controlled by the main transformer board MCU, and the high voltage and low voltage of the variable frequency motor circuit module are controlled by the main transformer board MCU.

[0016] Furthermore, in step three, the standby power consumption of the washing machine main transformer integrated computer board is 0.25W.

[0017] Furthermore, in step 4, the standby power consumption of the display panel is 0.1W.

[0018] The present invention has the following beneficial effects: the standby low power consumption control method of the washing machine of the present invention has a low solution cost compared with the traditional standby low power consumption washing machine, and can simultaneously support washing machines with full touch buttons. Description of the drawings:

[0019] Figure 1 This is a schematic diagram of the low-power consumption control system for the washing machine in standby mode. Specific implementation method:

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] The present invention provides a method for controlling low power consumption in standby mode of a washing machine, comprising the following steps:

[0022] Step 1: The 220VAC mains electricity passes through the filter 03 and is connected to the washing machine main transformer integrated computer board 01; the filter 03 is also a power-consuming device. If the filter discharge resistance is large, the power consumption is small. Therefore, a low-power filter is selected. The filter discharge resistance is 470K, and the actual filter power consumption is about 0.12W.

[0023] Step 2: The washing machine's main transformer integrated computer board 01 undergoes voltage conversion via a switching power supply, supplying power to various circuit modules. These modules include the water inlet valve module, drain pump module, heater module, door lock module, and variable frequency motor circuit module. The main transformer board's MCU controls the high-voltage and low-voltage power for the water inlet valve, drain pump, heater, and door lock modules, while the main transformer board's MCU also controls both the high-voltage and low-voltage power for the variable frequency motor circuit module.

[0024] Step 3: In standby mode, cut off the power to the water inlet valve module, drain pump module, heater module, door lock module, and variable frequency motor circuit module control circuit. Simultaneously, the main transformer board MCU enters sleep mode. In this operating mode, the main transformer board's standby power consumption is approximately 0.25W.

[0025] Step 4: Display Board 02 is powered by the washing machine's main transformer integrated computer board 01 at 12V. In normal operation, the washing machine's main transformer integrated computer board 01 and display board 02 communicate via the serial port. In standby mode, all indicators on display board 02 are off, and no communication signals are sent to the washing machine's main transformer integrated computer board 01. At this time, display board 02's standby power consumption is 0.1W.

[0026] Step 5: If the washing machine's main transformer integrated computer board 01 receives no communication signals within 10 minutes, it enters sleep mode. When the washing machine needs to be turned on, the display panel 02 sends a signal to the washing machine's main transformer integrated computer board 01. Since the washing machine's main transformer integrated computer board 01's serial port is inoperable, the main transformer integrated computer board 01's sleep / wake-up port activates, waking the washing machine's main transformer integrated computer board 01 and enabling normal operation.

[0027] The above design results in a washing machine with standby power consumption of 0.12W for the filter, 0.25W for the main transformer, and 0.1W for the display panel. The total power consumption is 0.47W, meeting the requirement of less than 0.5W for standby power consumption.

[0028] Compared with traditional standby low-power washing machines, the washing machine standby low-power consumption control method of the present invention has a low solution cost and can simultaneously support washing machines with full touch buttons.

[0029] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principles of the present invention. These improvements should also be regarded as the scope of protection of the present invention.

Claims

1. A method for controlling low power consumption in standby mode of a washing machine, characterized by: Here are the steps: Step 1: The mains power 220VAC passes through the filter (03) and is connected to the washing machine main transformer integrated computer board (01); Step 2: The washing machine main transformer integrated computer board (01) is transformed by the switching power supply and supplied to each circuit module; Step 3: In standby mode, cut off the power supply of each circuit module control circuit, and at the same time, the main transformer board MCU enters sleep mode; Step 4: The power supply of the display panel (02) is provided by the washing machine main transformer integrated computer board (01), and the voltage is 12V. In normal working mode, the washing machine main transformer integrated computer board (01) and the display panel (02) communicate through the serial port. In standby mode, all the indicator lights of the display panel (02) are off, and no communication signal is sent to the washing machine main transformer integrated computer board (01); Step 5: The washing machine main transformer integrated computer board (01) does not receive a communication signal within 10 minutes and enters a sleep mode. When the washing machine needs to be turned on, the display board (02) sends a signal to the washing machine main transformer integrated computer board (01). The serial port of the washing machine main transformer integrated computer board (01) cannot be executed. At this time, the sleep wake-up port of the washing machine main transformer integrated computer board (01) works to wake up the washing machine main transformer integrated computer board (01), and the washing machine can work normally. Each circuit module includes a water inlet valve module, a drain pump module, a heater module, a door lock module and a variable frequency motor circuit module. The high voltage of the water inlet valve module, the drain pump module, the heater module and the door lock module are controlled by the main transformer board MCU, and the high voltage and low voltage of the variable frequency motor circuit module are controlled by the main transformer board MCU.

2. The method for controlling low power consumption in standby mode of a washing machine according to claim 1, wherein: The discharge resistance of the filter is 470K.

3. The method for controlling low power consumption in standby mode of a washing machine according to claim 2, wherein: The power consumption of the filter is 0.12W.

4. The method for controlling low power consumption in standby mode of a washing machine according to claim 3, wherein: In step 3, the standby power consumption of the washing machine main transformer integrated computer board (01) is 0.25W.

5. The method for controlling low power consumption in standby mode of a washing machine according to claim 4, wherein: In step 4, the standby power consumption of the display panel (02) is 0.1W.

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