Air-Conditioning Control Using Corrected Suction Temperature
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Solution Overview
Problem
Conventional air-conditioning systems often deviate from set temperatures due to the positioning of indoor units and structures within the air-conditioned space, leading to inconsistencies between set and actual space temperatures.
Innovation Solution
An air-conditioning system with a setting unit that calculates a correction amount by comparing the air-conditioned space temperature with the suction temperature detected by the indoor unit, and transmits this correction to the air-conditioning apparatus to adjust its operation, ensuring the control temperature aligns with the set temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the suction temperature sensor is used to detect indoor temperature for control, then the control system is simple, but the temperature measurement accuracy deviates from actual space temperature
Solution Approach 1:
The patent introduces a correction amount as an intermediary value that mediates between the suction temperature sensor reading and the actual space temperature. The correction amount, calculated based on the difference between suction temperature and space temperature, serves as a compensating factor to improve measurement accuracy without adding complex hardware
2Ease of manufacture
If the indoor unit position or structure arrangement is fixed, then installation is simple, but the temperature uniformity in the air-conditioned space deteriorates
Solution Approach 1:
The patent changes the control parameter from raw suction temperature to corrected temperature by adding the correction amount. This parameter transformation allows the system to compensate for fixed installation positions and structural arrangements, maintaining temperature uniformity without requiring complex reconfigurable installations
Data Source
AI summary
A setting unit acquires the temperature of an air-conditioned space, calculates the difference between the temperature of the air-conditioned space and a suction temperature as a correction amount ΔT, and transmits information of the correction amount ΔT to an air-conditioning apparatus. A controller of the air-conditioning apparatus controls the operation of the air-conditioning apparatus so that a control temperature obtained by adding the correction amount ΔT to the suction temperature becomes equal to a set temperature.