Home electric water heater zero power consumption standby control method and device

Abstract

The invention relates to a zero power consumption standby control method and device of a domestic water heater. The zero power consumption standby control device is provided with a temperature controlled switch capable of sensing the change of temperature in an inner container of the electric water heater, a power supply circuit for controlling an MCU (Microprogrammed Control Unit) digital control device, and a control relay contact connected with the temperature controlled switch in parallel. The zero power consumption standby control method comprises the steps of maintaining the power supply circuit of the MCU digital control device at a connection state, and when the MCU digital control device stops heating, disconnecting the control relay contact, and switching off the power supply circuit of the MCU digital control device, so that the domestic water heater is at a zero power consumption standby state. Due to the zero power consumption standby control method and the device, the zero power consumption standby is realized, the standby power consumption is saved, a new operation ideal is also put forward, and a repeated heating 'always ready' mode is turned into an electricity-saving sleep mode of 'storing electricity and heating water as required'. Each domestic water heater with 100 liters can save more than 160 KWh of electricity every year. More than 2.72 billion KWh of electricity can be saved every year by 17 million heat-storage-type electric water heaters, namely one half of the total output of domestic water heaters of China. Therefore, the zero power consumption standby control method and device bring immeasurable economic benefits and social benefits.

Description

technical field [0001] The invention relates to a zero-power standby control method and device for household appliances, in particular to a zero-power standby control method and device for household electric water heaters. Background technique [0002] In the existing control devices of household appliances, especially the control devices based on the digital display control function of the MCU, whether equipped with a remote controller or not, the main control chip must be available. Once the power is turned on and enters the standby state, the main controller chip starts to work, receiving and sending various control commands. At this time, a small amount of power is consumed, which is what we often call standby power consumption. [0003] The standby power consumption of general household appliances is between a few watts and more than a dozen watts. Although the power is not large, it is a large number that cannot be ignored when accumulated. For example: the standby p...

AI Technical Summary

Problems solved by technology

In addition, after the existing household electric water heater completes the heating program according to the control temperature set by the MCU digital control device, the control device of the household electric water heater will also continuously monitor the temperature change, and repeatedly heat to maintain the set temperature, even if there is no heating for a long time. The hot water output will also be heated repeatedly, and the heating will usually start within 2-3 hours, resulting in high heating power consumption during standby

Not only does it cause huge waste, but it is also an imperceptible, non-profitable and considerable expenditure for the general discontinuous use of home users

[0005] At present, there are few reports on the technical solutions to the above-mentioned standby power consumption problems of household electric water heaters. A relatively complete solution will definitely promote the technological progress of household electric water heaters, improve their energy consumption indicators, and generate significant economic benefits. Benefits and social benefits, vigorously promote the progress of green environmental protection projects that save energy, reduce emissions, and improve the environment

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