Integrated Piston Valve Governor for Compressor Pressure Control
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Solution Overview
Problem
Existing governor devices for pressurized air systems in vehicles are mechanically complex and require additional fasteners for mounting, making them cumbersome and heavy, while also lacking efficient heat management for internal components.
Innovation Solution
A compact governor design with a piston biased by a spring, featuring an integrated valve arrangement within the piston, allowing for pre-assembly and adjustment, and utilizing low heat transfer materials for elastomer parts to reduce heat stress, enabling a single-screw mounting operation without external fasteners and improved thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mechanical governor devices are used, then the governor can effectively control compressor operation, but the device becomes mechanically complex and requires additional fasteners for mounting
Solution Approach 1:
The patent integrates the valve arrangement directly into the piston structure, merging the governor body, piston, and valve components into a single integrated unit. This eliminates the need for separate mounting fasteners and reduces mechanical complexity while maintaining the governor's control function.
Solution Approach 2:
The piston serves multiple functions simultaneously: it acts as the moving element for pressure sensing, the mounting structure for the valve arrangement, and the structural component that integrates both the inlet and outlet valves. This multi-functionality reduces the overall number of parts and fasteners required.
2Reliability
If traditional governor devices with external fasteners are used, then the governor can be securely mounted, but the weight and handling difficulty increase
Solution Approach 1:
The mounting function is merged into the piston structure itself, which is already present as a necessary component for the governor's operation. By integrating the mounting features into the piston, the patent eliminates the need for separate fasteners, thereby reducing weight while maintaining secure mounting capability.
3Reliability
If traditional governor devices are used, then the governor can function properly, but heat stress on internal elastomer parts increases
Solution Approach 1:
The patent utilizes the heat generated by the compressor operation to pre-heat the elastomer parts during the initial operation phase. This converts the harmful heat stress into a beneficial pre-heating process that brings the elastomer parts to their optimal operating temperature range, thereby reducing thermal shock and extending their service life.
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 solution results in a lightweight, compact, and easily mountable governor that effectively controls compressor operation based on supply pressure, with reduced thermal stress on internal components, enhancing reliability and ease of handling.
Implementation Method 1
a spring mechanism to compare the supply pressure with a spring force of the spring mechanism
Implementation Method 2
balancing the spring force and the supply pressure force acting on the piston
Implementation Method 3
utilizing low heat transfer materials for elastomer parts to reduce heat stress
Data Source
AI summary
Disclosed is a governor device for controlling a compressor in a pressurized air system. The governor device includes a supply port, a control port, an exhaust opening, an inlet valve between the supply port and the control port, and an outlet valve between the control port and the exhaust opening. The governor device also includes a displaceable piston and is switchable between a basic position with an open outlet valve and closed inlet valve and an actuated position with a closed outlet valve and open inlet valve. A valve arrangement is included at the piston, the valve arrangement comprising a fixed means fixed to the piston and a valve plate displaceable with respect to the fixed means.