Method for automatically controlling partial functions of air conditioner and heat pump water heater based on weather forecast data

Abstract

The present invention provides a method for automatically controlling partial functions of an air conditioner and a heat pump water heater based on weather forecast data. According to the method, mainly the control on an air conditioner and the big data of weather forecast are combined, such that the air conditioner can predict and automatically control the opening and the closing of the electricheating tape of a compressor during the standby of the air conditioner according to the temperature change in weather forecast, the amount of new air introduced by an indoor unit can be automaticallycontrolled according to outdoor air quality report data while whether an indoor heat exchanger is clogged by dirt can be judged by combining historical air quality data and the gas discharging temperature or the pressure data of the compressor, the dehumidification period or logic can be automatically established according to local seasonal climate, or the evaporation pressure during cooling can be adjusted sp as to make the air conditioner dehumidify according to the concrete humidity condition, the temperature change at the current day can be predicted, the water boiling temperature can be adjusted, the running period achieving the highest energy efficiency can be determined, and the time for boiling water can be calculated and is transmitted to a client terminal.

Description

technical field [0001] The invention belongs to the technical field of control, and in particular relates to a method for realizing automatic control of some functions of an air conditioner and a heat pump water heater based on weather forecast data. Background technique [0002] At present, the control of air conditioners or heat pump water heaters is mostly based on the remote control or wire controller to control the fresh air function, dehumidification function of the internal unit, and the heating time of the heat pump water heater. This control method mainly has the following shortcomings: [0003] 1. The indoor unit of the air conditioner cannot control the fresh air volume according to the quality of the outdoor air environment, and it is easy to introduce low-quality outdoor air into the room. [0004] 2. When the outdoor air quality is poor, such as in a dusty environment, the outdoor heat exchanger is more likely to be dirty and blocked. Under refrigeration condit...

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Problems solved by technology

[0003] 1. The indoor unit of the air conditioner cannot control the fresh air volume according to the quality of the outdoor air environment, and it is easy to introduce low-quality outdoor air into the room

[0004] 2. When the outdoor air quality is poor, such as in a dusty environment, the outdoor heat exchanger is more likely to be dirty and blocked. Under refrigeration conditions, the exhaust temperature or pressure of the compressor will increase after being dirty, and the existing air conditioner cannot use this information Prompt the user with the air conditioner dirty blockage information, which will eventually lead to the high-pressure or high-temperature shutdown protection of the unit; on the contrary, under the heating condition, after the outdoor unit heat exchanger is dirty blockage, the compressor discharge temperature and discharge pressure will drop

[0005] 3. The seasonal climate in each region is different, and the unit cannot perform specific control according to the special seasonal climate. For example, South China is a typical oceanic subtropical monsoon climate. In March and April every year, the warm and humid air blowing from the South China Sea, When it meets the cold air coming down from the north of China, it forms a quasi-stationary front in the south of the Lingnan area. This makes the weather in South China very cloudy and very humid. There will be light rain or heavy fog during the period. After the humid air flow, it is easy to condense on its surface and form water droplets, which also causes the weather phenomenon of "returning to the south". However, our existing air conditioners do not have the function of automatically adjusting the indoor humidity for these special climates, or automatically adjusting the indoor humidity according to the humidity information. Function to control evaporation temperature

[0006] 4. When the outdoor ambient temperature is high, the heat pump water heater has high operating energy efficiency, and the heating time is short when the same temperature is set. When the outdoor ambient temperature is low, the operating energy efficiency is low, and the heating time is long when the same temperature is set. The temperature requirements are low, the ambient temperature is low, and users have high requirements for hot water temperature. However, the existing heat pump water heaters use manual setting of temperature and reservation of boiling water time. This design has two disadvantages: (1) Although the boiling water temperature can be manually set However, in fact, users generally set the same boiling water temperature throughout the year, and when heat pump water heaters are heating hot water, the higher the water temperature setting, the lower the energy efficiency, which leads to the fact that the actual water temperature of the user is not high. The water heater still burns the water to the set high water temperature, resulting in waste of energy; (2) During the day, the temperature changes greatly, and if heating at an appointment time is used, the time for heating hot water with high energy efficiency may be missed, resulting in The energy efficiency of boiling water is not high; that is, the existing control method cannot intelligently use the time period of the highest ambient temperature in a day to heat hot water, nor can it adjust the set boiling water temperature according to the ambient temperature, resulting in low energy efficiency throughout the year and energy waste

[0007] In addition, there are large temperature changes in our living environment. When the ambient temperature rises, because the compressor heats up slower than the two devices, the system refrigerant will migrate to the compressor with a lower temperature, resulting in the dilution of the compressor oil; therefore, In order to prevent the accumulation of refrigerant in the compressor when the air conditioner is in standby and ensure the reliability of the unit, the electric heating belt of the compressor is always on when it is in standby. However, in daily life, the standby time of the air conditioner is very long, even far longer than the running time. If the compressor electric heating belt is always on when it is in standby, it is also a big waste of energy

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