Environmental air conditioning and refrigeration isolation safety valve
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Solution Overview
Problem
Existing air conditioning systems lack the necessary hardware to safely and efficiently isolate refrigerant systems during servicing, posing risks to technicians and resulting in refrigerant loss to the atmosphere.
Innovation Solution
An inline safety isolation valve module with ball valves and a service port, allowing for manual control of refrigerant flow to prevent leaks and minimize refrigerant escape during servicing, which can be retrofitted into existing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If service ports are used to deplete or charge refrigerant systems, then system servicing is enabled, but technicians risk injury from highly cooled refrigerant escaping and refrigerant loss to the atmosphere occurs
Solution Approach 1:
The refrigeration system is segmented into isolated sections using service isolation valves positioned at strategic locations (compressor, condenser, evaporator, service ports). These valves divide the system into separate zones that can be independently controlled, allowing technicians to service one section without exposing themselves to refrigerant hazards in other sections.
Solution Approach 2:
Service isolation valves act as intermediary devices between the refrigerant system and the external environment. These valves provide a controlled interface that allows refrigerant to be safely contained or released only through designated service ports under controlled conditions, preventing uncontrolled escape and technician exposure.
2Ease of repair
If service ports are disconnected during servicing, then component replacement is enabled, but significant refrigerant loss to the atmosphere occurs
Solution Approach 1:
Service isolation valves enable preliminary isolation of the refrigeration system or specific sections before disconnection occurs. Technicians can close the valves in advance, containing the refrigerant within sealed sections, then proceed with component removal without causing refrigerant escape. This preliminary containment action prevents the harmful effect of refrigerant loss.
Solution Approach 2:
The system enables recovery of refrigerant by isolating sections containing refrigerant from the atmosphere. Technicians can close isolation valves to trap refrigerant in specific sections, then safely disconnect and service components while the refrigerant remains contained in sealed sections, preventing it from being discarded to the atmosphere.
3Adaptability or versatility
If existing air conditioning systems are serviced without isolation hardware, then current system design is maintained, but safety and efficiency during servicing are compromised
Solution Approach 1:
Service isolation valves are designed as universal components that can be integrated into various refrigeration system configurations and existing air conditioning systems through retrofitting. The valves provide multiple functions including isolation, containment, and controlled access to refrigerant, making them adaptable to different system types while consistently improving servicing safety and reliability.
Data Source
AI summary
A safety isolation valve module includes a conduit having a service port, an inlet, an outlet, and ball valves separating each of the inlet and the outlet from the conduit. The ball valves may be manually manipulating to open or close flow and can be used to isolate the service port from either or both sides of the refrigerant systems. When servicing the service port or other components of the refrigerant system, the valves may be shut to enable servicing of portions of the system without risking injury or losing significant amounts of refrigerant to the atmosphere.