5results about How to "Stable air temperature" patented technology

The invention relates to the technical field of multi-split air conditioners, and provides a control method and device of a multi-split air conditioning system and the multi-split air conditioning system.The control method of the multi-split air conditioning system comprises the steps that when an operation mode is a refrigeration mode, the fluctuation frequency is larger than or equal to the preset frequency, and the fluctuation correlation state is a correlation state, the multi-split air conditioning system is started; if yes, sending a signal for controlling the operation frequency of the compressor to be the target frequency; wherein the target frequency is lower than the current frequency, and the frequency difference value is a preset frequency difference value. When the multi-split air conditioning system operates in the refrigeration mode, if the exhaust temperature of the compressor fluctuates for multiple times within the first preset duration, and the temperature fluctuation is caused by opening and closing of the liquid spraying valve, the operation frequency of the compressor is controlled to be reduced to the target frequency from the current frequency, and the target frequency is reduced to the target frequency. And at the moment, the exhaust temperature is maintained between the first preset temperature and the second preset temperature, fluctuation of the air outlet temperature of the indoor unit caused by frequent opening and closing of the liquid spraying valve is avoided, and the comfort level of a user is improved.

The invention discloses a control method of an air conditioner and the air conditioner, the air conditioner comprises an indoor unit coil pipe and an electric heating piece, and the control method comprises the steps that the temperature of the indoor unit coil pipe and the indoor environment temperature are detected; according to the temperature of the indoor unit coil pipe and the temperature difference between the temperature of the indoor unit coil pipe and the environment temperature, a target power value is obtained; and the maximum power value of the electric heating piece is obtained, and the operation gear of the electric heating piece is selected according to the target power value and the maximum power value. Therefore, by arranging the air conditioner, the operation gear of the electric heating piece can be selected according to the temperature of the indoor unit coil pipe, the temperature difference between the temperature of the indoor unit coil pipe and the environment temperature and the maximum power value of the electric heating piece, the energy loss of the air conditioner can be reduced, the number of adjustment times of the electric heating piece in the operation process is small, and the service life of the air conditioner is prolonged. The air outlet temperature of the air conditioner can be stable, and the comfort level of a user is improved.

According to the air conditioner shell structure and the air conditioner, a cold air channel formed in a shell assembly communicates with the side wall of a warm air cavity through the inlet side and the outlet side of the warm air cavity, and an evaporator core installed at the inlet end of the cold air channel can cool inflow airflow to form cold air; hot water may remain in the warm air core installed in the warm air cavity in a refrigeration scene, the first mixing air door is installed corresponding to the outlet side of the warm air cavity, the second mixing air door is installed corresponding to the inlet side, and cold air can be prevented from flowing into the warm air cavity through the inlet side and flowing out through the outlet side by closing the first mixing air door and the second mixing air door during refrigeration. Cold air is prevented from making contact with the surface of the warm air core with residual hot water and absorbing heat, it is guaranteed that the air outlet temperature of the air conditioner is stable, the refrigeration effect is effectively optimized, the refrigeration performance of the air conditioner does not need to be additionally increased or a warm air water valve does not need to be additionally arranged, the structure is simple and compact, and energy conservation and consumption reduction are achieved while cost is reduced.

This invention provides an indoor unit control method, device, and air conditioner. The method includes: determining a target rotation speed based on the current coil temperature; controlling the indoor unit to adjust its rotation speed based on the target rotation speed, so that the indoor unit can continuously operate at the adjusted rotation speed for a first preset time; if it is determined that the next coil temperature is in a first range, controlling the indoor unit to reduce the fan speed based on the adjusted rotation speed; if it is determined that the next coil temperature is in a second range, controlling the indoor unit to increase the fan speed based on the adjusted rotation speed. The indoor unit control method, device, and air conditioner provided by this invention analyze the system pressure value based on the coil temperature and adjust the indoor unit's fan speed accordingly, so that the coil temperature under high-temperature self-cleaning mode is always maintained within the normal temperature range, ensuring that the outlet air temperature is stable at 56°C, improving the efficiency of high-temperature self-cleaning, and avoiding shutdown caused by sudden increases or decreases in system pressure due to unilaterally maintaining the outlet air temperature by adjusting the frequency.