Ventilation system, integrated air conditioning system and control method thereof
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Solution Overview
Problem
Conventional ventilation devices fail to maintain indoor temperature and humidity in a fresh state due to incomplete dehumidification and limited control over temperature and humidity regulation, relying solely on total heat exchange between indoor and outdoor air.
Innovation Solution
An integrated air conditioning system comprising a ventilation device with temperature and humidity sensors, heat exchangers, and a controller that adjusts the operation of the ventilation and indoor units based on indoor conditions, using a conventional outdoor unit of an air conditioner to enhance cooling and dehumidification efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If total heat exchange is used between outdoor air and indoor air, then the ventilation device can exchange air between indoor and outdoor spaces, but the dehumidification of outdoor air is incomplete and indoor temperature and humidity cannot be maintained in a fresh state
Solution Approach 1:
The patent divides the single total heat exchange process into two separate heat exchangers: a first heat exchanger for heat exchange between outdoor air and indoor air, and a second heat exchanger for additional heat exchange between the outdoor air (after first heat exchange) and indoor air. This segmentation allows for more complete dehumidification and temperature control, resolving the contradiction by enabling both air exchange functionality and improved humidity control precision.
2Ease of manufacture
If a conventional outdoor unit of air conditioner is used, then the device can be operated using existing air conditioning infrastructure, but the cooling and dehumidification efficiency is limited
Solution Approach 1:
The patent merges the ventilation device with the air conditioner by connecting the outdoor unit of the air conditioner to provide refrigerant to both the first and second heat exchangers of the ventilation device. This integration allows the existing air conditioning infrastructure to be utilized while achieving enhanced cooling and dehumidification efficiency through the dual heat exchanger configuration, simultaneously improving ease of manufacture and productivity.
3Ease of operation
If ventilation device and indoor unit of air conditioner operate independently, then each device can function autonomously, but cooling efficiency and dehumidification efficiency are not optimized
Solution Approach 1:
The patent enables the outdoor unit to serve multiple functions by supplying refrigerant to both the ventilation device (first and second heat exchangers) and the indoor unit of the air conditioner. This multi-functionality allows the system to operate with integrated control for optimized cooling and dehumidification efficiency while maintaining the capability for independent operation when needed, resolving the contradiction between ease of operation and productivity.
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 system effectively maintains indoor temperature and humidity in a fresh state by adjusting the operation of ventilation and indoor units, improving energy efficiency and reducing energy consumption for cooling and dehumidification.
Implementation Method 1
a heat exchanger installed on the inlet flow path... configured to exchange heat with outdoor air
Implementation Method 2
an outdoor unit configured to supply a refrigerant to the ventilation device and the indoor unit
Data Source
AI summary
An integrated air conditioning system includes a ventilation device comprising a first temperature sensor, a first humidity sensor, and a heat exchanger installed on the inlet flow path. An indoor unit configured to discharge heat-exchanged air into an indoor space. An outdoor unit configured to supply a refrigerant to the ventilation device and the indoor unit. A controller connected to the ventilation device, the indoor unit, and the outdoor unit. The controller configured to obtain an indoor temperature from the first temperature or the second temperature sensor. The controller configured to obtain indoor humidity from the first humidity sensor or the second humidity sensor and configured to control at least one of the ventilation device and the indoor unit based on the indoor temperature and the indoor humidity.