Three-Position Valve for Vehicle Cooling System Evacuation
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Solution Overview
Problem
Existing vehicle cooling system evacuation and refilling tools require careful valve positioning to avoid vacuum loss and coolant spillage, often leading to operator errors and inefficiencies due to the use of two-position valves and separate connections for evacuation and refilling.
Innovation Solution
A device with a three-position valve that allows fluid coupling between a service port, evacuation port, and supply port, enabling adjustable configurations for evacuation, refilling, and isolation, preventing fluid exchange during vacuum maintenance and minimizing setup changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If two-position valves are used to control flow between ports, then the device can perform evacuation and refilling functions, but operator errors occur due to the need for careful valve positioning
Solution Approach 1:
The patent combines multiple valve functions into a single three-position valve that can simultaneously control flow between the service port and either the evacuation port or the supply port. This merging of control functions eliminates the need for multiple separate two-position valves and reduces the complexity of valve positioning operations, thereby improving ease of operation while maintaining reliability through centralized control.
Solution Approach 2:
The three-position valve provides dynamic control by allowing the operator to select between three distinct configurations: connecting the service port to the evacuation port, connecting the service port to the supply port, or isolating the service port. This dynamic switching capability simplifies the operational sequence and reduces the risk of errors compared to managing multiple two-position valves.
2Adaptability or versatility
If separate connections are used for evacuation and refilling, then the device can perform both functions, but setup complexity increases
Solution Approach 1:
The patent implements a universal service port that can be fluidly connected to either the evacuation port or the supply port through the three-position valve. This multi-functional design allows the same service port to serve both evacuation and refilling operations, eliminating the need for separate dedicated connections for each function and thereby reducing device complexity while maintaining adaptability.
Solution Approach 2:
The patent merges the evacuation connection and supply connection control into a single valve mechanism. Instead of requiring separate valves and connection pathways for evacuation and refilling, the three-position valve consolidates these control functions, allowing both operations to be performed through a unified connection interface, thus reducing overall device complexity.
3Device complexity
If two-position valves are used, then the device structure is simpler, but operator errors lead to vacuum loss and coolant spillage
Solution Approach 1:
The patent merges the control of evacuation flow and supply flow into a single three-position valve system. This ensures that only one connection path is active at a time, physically preventing the harmful scenario where both evacuation and supply connections are simultaneously open, which would cause vacuum loss and coolant spillage. The merged control structure eliminates this hazard while maintaining relatively simple device complexity.
Solution Approach 2:
The three-position valve design incorporates preliminary anti-action by structurally preventing the simultaneous opening of evacuation and supply pathways. The valve's design ensures that when the service port is connected to the supply port, the evacuation port is automatically isolated, and vice versa. This preliminary prevention mechanism stops harmful effects before they can occur, addressing the safety concerns associated with two-position valve systems.
Data Source
AI summary
A device for evacuating and filling a vehicle cooling system includes a housing having an interior chamber. A service port extends into the housing and connectable with the vehicle cooling system, a supply port extends into the housing and connectable with a source of coolant fluid, and an evacuation port extends into the housing. A valve is disposed at least partially within the housing chamber and is adjustable between a first configuration in which the service port is fluidly coupled with the evacuation port and a second configuration in which the service port is fluidly coupled with the supply port.