Air Conditioning Unit Leak Ventilation Using Inducer and Partition
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Solution Overview
Problem
HVACR systems face inefficiencies due to temperature differences and noise transmission between compressor and blower compartments, and the risk of toxic or flammable refrigerant leaks, which can accumulate and pose safety hazards.
Innovation Solution
The air conditioning unit incorporates a partition to restrict and control airflow between compartments, using an inducer to ventilate leaked refrigerant into the blower compartment, ensuring safe and efficient operation by mixing it with inlet air to maintain low concentrations and prevent accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the compartments are tightly enclosed to restrict air flow and reduce noise transmission, then noise transmission is reduced and heat transfer is minimized, but refrigerant leaks can accumulate to toxic or flammable levels
Solution Approach 1:
The housing is divided into separate compartments (compressor compartment and blower compartment) that are normally isolated from each other. This segmentation allows the system to maintain tight enclosures for noise reduction while providing a dedicated path for refrigerant ventilation through the inducer mechanism.
Solution Approach 2:
The inducer acts as an intermediary mechanism between the compressor compartment and the blower compartment. It provides a controlled connection that allows refrigerant ventilation when needed while maintaining the general isolation between compartments for noise reduction and heat transfer minimization.
2Productivity
If the compartments are tightly enclosed to improve efficiency by reducing convective heat transfer, then efficiency and capacity are improved, but refrigerant leaks can accumulate to dangerous levels
Solution Approach 1:
The inducer is positioned and configured in advance to provide a ventilation path from the compressor compartment to the blower compartment. The refrigerant leak detection system is pre-configured to monitor for leaks and activate the inducer when needed, ensuring safety without compromising efficiency during normal operation.
Solution Approach 2:
The inducer serves as a mediator that enables controlled refrigerant transfer between compartments. It maintains the efficiency benefits of compartment isolation during normal operation while providing a safety mechanism to prevent dangerous refrigerant accumulation when leaks occur.
3Reliability
If the inducer is activated to ventilate refrigerant leaks, then refrigerant accumulation is prevented, but air flow between compartments increases reducing efficiency
Solution Approach 1:
The inducer operates periodically rather than continuously - it remains inactive during normal operation to maintain compartment isolation and efficiency, and activates only when refrigerant leaks are detected. This periodic activation prevents efficiency loss while ensuring safety when needed.
Solution Approach 2:
The refrigerant leak detection system provides feedback to control the inducer operation. When refrigerant levels are normal, the inducer remains off to maintain efficiency. When leaks are detected, the system activates the inducer to ventilate the refrigerant, thus maintaining efficiency while ensuring safety through feedback-controlled operation.
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 design enhances efficiency, capacity, and performance by reducing convective heat transfer and noise, while safely venting refrigerant leaks, maintaining a safe operating environment.
Implementation Method 1
an inducer disposed in the housing, the inducer being configured to move air from the first compartment into the air flow path upon detection of the refrigerant leak by the refrigerant leak detection system
Implementation Method 2
By restricting and controlling air flow between the compressor and blower compartments, convective heat transfer is reduced or eliminated
Implementation Method 3
an air flow path extending through the second compartment, the air flow path being arranged to route air flow from the air inlet to the air outlet, a blower disposed in the air flow path
Data Source
AI summary
Methods and systems for an air conditioning unit is provided. The air conditioning unit includes a housing having a first compartment and a second compartment separated from the first compartment by a partition disposed in the housing, the housing including an air inlet and an air outlet. A refrigerant circuit includes a compressor disposed in the first compartment. An air flow path extends through the second compartment. The air flow path is arranged to route air flow from the air inlet to the air outlet, and a blower is disposed in the air flow path. A refrigerant leak detection system is configured to detect a refrigerant leak within the housing. An inducer is disposed in the housing. The inducer is configured to move air from the first compartment into the air flow path upon detection of the refrigerant leak by the refrigerant leak detection system.