Air Conditioning Device With Integrated CMV Using Venturi Effect
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Solution Overview
Problem
The integration of controlled mechanical ventilation (CMV) apparatus with separate heating and cooling systems increases implementation costs and labor, as it requires additional equipment and installation, which can discourage its use in buildings.
Innovation Solution
A thermal conditioning device that couples the CMV apparatus with a thermal conditioning system, utilizing the Venturi effect to draw additional indoor air flow and condition it, thereby eliminating the need for separate systems by leveraging the CMV apparatus's pressure to create air circulation without additional fans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a controlled mechanical ventilation (CMV) apparatus is added to the heating and cooling system, then adequate air exchange is ensured, but implementation costs for labor and installation increase
Solution Approach 1:
The patent combines the CMV apparatus with the thermal conditioning device into a single integrated system. The CMV apparatus and thermal conditioning device share common components including the housing, air outlet duct, and control unit, eliminating the need for separate installations and reducing overall implementation costs while ensuring both adequate air exchange and thermal conditioning.
Solution Approach 2:
The integrated apparatus performs multiple functions simultaneously: it provides controlled mechanical ventilation for air exchange, heating when required, and cooling when required. The system can operate in different modes (ventilation only, heating, cooling, or combination) based on environmental conditions and user needs, making it a universal solution that replaces multiple separate devices.
2Reliability
If the CMV apparatus is used alone without thermal conditioning, then air exchange is achieved, but heating or cooling capability is insufficient
Solution Approach 1:
The patent integrates the thermal conditioning device (with heating and cooling components) directly into the CMV apparatus housing. The air handling system is shared between ventilation and thermal conditioning functions, allowing the same air flow path to be used for both air exchange and temperature control, thus achieving both air exchange reliability and adequate thermal conditioning.
3Reliability
If separate CMV and thermal conditioning systems are implemented, then both air exchange and temperature control are ensured, but labor and installation costs increase
Solution Approach 1:
The patent merges the CMV apparatus and thermal conditioning device into a single integrated unit with shared housing, air outlet duct, control unit, and electrical connections. This integration eliminates the need for separate installation processes, reduces labor costs, and simplifies manufacturing while ensuring both air exchange and temperature control functions are maintained.
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
This integration reduces labor and component costs by utilizing the CMV apparatus's pressure to enhance air circulation and conditioning, allowing for efficient heating or cooling without oversized air flows and minimizing energy consumption when not required.
Implementation Method 1
draw in a predetermined additional air flow Q' from the indoor environment 2 of the room 1 by means of a Venturi effect activated by the incoming air flow Qin of the CMV apparatus 4
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A device (20) for the thermal conditioning of an indoor environment (2), which may be used in combination with a CMV apparatus, comprises an inner compartment (24) connectable to an inlet duct (8) for an incoming air flow (Qin), an additional mouth (28) in communication with the inner compartment (24) for the entry from the indoor environment (2) of an additional air flow (Q'in), a shutter assembly (30) electrically operable to open or close the additional mouth (28), an outlet mouth (40) connected to the inner compartment (24) for feeding into the indoor environment (2) a total air flow (Qtot) consisting of the incoming flow (Qin) and the additional flow (Q'in), a nozzle assembly (50) configured to receive the incoming flow (Qin) at low speed, accelerate it and feed it at high speed into the inner compartment (24) to draw the additional flow (Q'in) back into the inner compartment (24) through the additional mouth (28), and an exchanger (70) located between the additional mouth (28) and the outlet mouth (40) to thermally condition the total flow (Qtot) that hits it before exiting the outlet mouth (40).