Air conditioner and controlling method therefor
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Solution Overview
Problem
Conventional air conditioners experience significant fluctuations in indoor temperature and humidity during dehumidifying operations due to repeated on-off control of the compressor, leading to user inconvenience and reduced power efficiency.
Innovation Solution
An air conditioner system that performs a comfort operation by adjusting the compressor frequency without on-off control, based on indoor humidity and temperature readings, to maintain the indoor heat exchanger temperature at or below the dew point temperature during dehumidifying operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the compressor is repeatedly turned on or off according to changes in indoor temperature during a dehumidifying operation, then the indoor humidity is reduced, but the fluctuation in indoor temperature increases and the fluctuation in indoor humidity increases
Solution Approach 1:
The patent applies continuous compressor operation during dehumidifying mode instead of repeated on-off cycling. The compressor runs continuously at a low frequency, maintaining steady refrigerant flow and heat exchange, which eliminates temperature and humidity fluctuations while still achieving effective dehumidification.
Solution Approach 2:
The patent dynamically adjusts the compressor frequency based on the difference between indoor temperature and dew point temperature. When the temperature difference is large, the compressor operates at higher frequency; when the difference is small, it operates at lower frequency. This dynamic adjustment maintains stability while adapting to changing conditions.
2Quantity of substance
If the compressor is repeatedly turned on or off during a dehumidifying operation, then the dehumidification function is achieved, but power consumption efficiency decreases
Solution Approach 1:
The patent eliminates repeated compressor start-stop cycles by maintaining continuous operation at low frequency. This avoids the energy waste associated with motor startup currents and thermal losses from repeated cycling, significantly improving power consumption efficiency while maintaining effective dehumidification.
Solution Approach 2:
The patent changes the operating parameters by running the compressor at low frequency continuously rather than high frequency intermittently. This parameter change optimizes energy efficiency by keeping the compressor in a stable, efficient operating zone while still achieving the required dehumidification effect.
3Temperature
If the compressor frequency is adjusted based on indoor temperature and dew point temperature difference, then the indoor heat exchanger temperature is maintained at or below dew point temperature, but the control complexity increases
Solution Approach 1:
The patent implements a feedback control mechanism where the compressor frequency is continuously adjusted based on the measured difference between indoor temperature and dew point temperature. The system monitors this temperature difference and automatically adjusts compressor operation to maintain the indoor heat exchanger temperature at or below the dew point, ensuring effective condensation while adapting to changing environmental conditions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The comfort operation reduces fluctuations in indoor temperature and humidity, thereby improving power consumption efficiency and providing a more comfortable indoor environment for users.
Implementation Method 1
a compressor configured to supply a refrigerant to the indoor heat exchanger
Implementation Method 2
an indoor heat exchanger... cool or heat the air and release the cooled or heated air
Implementation Method 3
transfer of heat produced from evaporation and condensation of a refrigerant
Implementation Method 4
transfer of heat produced from evaporation and condensation of a refrigerant
Data Source
AI summary
An air conditioner is provided. The air conditioner includes an indoor unit including an indoor heat exchanger, an outdoor unit including a compressor configured to supply a refrigerant to the indoor heat exchanger, an indoor heat exchanger temperature sensor configured to detect a temperature of the indoor heat exchanger, an indoor humidity sensor configured to detect an indoor humidity, an indoor temperature sensor configured to detect an indoor temperature, memory storing instructions, and one or more processors, wherein the instructions, when executed by the one or more processors individually or collectively, cause the air conditioner to determine whether to perform a comfort operation to maintain the temperature of the indoor heat exchanger to be less than or equal to a dew point temperature, based on the indoor humidity and the indoor temperature during a dehumidifying operation, and adjust a frequency of the compressor based on the temperature of the indoor heat exchanger and the dew point temperature during the comfort operation.