Compressor Clutch Disengagement for Overpressure Control
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Solution Overview
Problem
Compressors are prone to overpressurization due to ice formation and debris buildup, leading to valve sticking and potential damage, which existing systems often address through manual pressure relief valves that can result in oil expulsion and system shutdown.
Innovation Solution
A controller-driven system that selectively disengages a clutch between the motor and compressor when pressure exceeds a set threshold, preventing overpressurization by stopping pressurization without activating manual relief valves, and allows re-engagement once pressure is reduced, enabling continued operation and thawing of frozen components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manual pressure relief valve is used to prevent overpressurization, then the compressor is protected from damage, but oil is expelled and the system shuts down
Solution Approach 1:
The patent replaces the manual mechanical pressure relief valve system with an automated electronic control system that uses a pressure sensor, microcontroller, and solenoid valve to monitor and regulate compressor pressure, thereby preventing oil expulsion while maintaining compressor protection
Solution Approach 2:
The patent implements a feedback control loop where a pressure sensor continuously monitors compressor pressure and sends signals to a microcontroller, which automatically adjusts the solenoid valve to maintain pressure within safe limits, preventing both overpressurization and oil expulsion
2Productivity
If the compressor operates continuously in cold conditions, then productivity is maintained, but ice formation causes valve sticking and overpressurization
Solution Approach 1:
The patent activates a heating element before the compressor operates in cold conditions to preheat the intake air and prevent ice formation on valves, thereby maintaining both continuous productivity and reliable valve functionality
Solution Approach 2:
The patent changes the temperature parameter of the intake air by activating a heating element when cold conditions are detected, preventing ice formation on valves while allowing continuous compressor operation
3Reliability
If the clutch disengages immediately when pressure reaches threshold, then overpressurization is prevented, but the compressor cannot recover and continue operation
Solution Approach 1:
The patent uses dynamic pressure threshold management where the clutch disengagement pressure threshold is higher than the re-engagement threshold, creating a hysteresis effect that allows the compressor to recover and continue operation after preventing overpressurization
Solution Approach 2:
The patent implements periodic clutch engagement and disengagement based on pressure thresholds, allowing the compressor to operate in cycles that prevent overpressurization while maintaining continuous overall functionality through recovery phases
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
Prevents compressor malfunction and damage by maintaining operation and reducing the risk of oil expulsion, allowing for controlled pressure management and thawing of frozen components, thus extending compressor life and ensuring continuous functionality.
Implementation Method 1
a compressor having a compression device configured to increase a pressure of a gas
Implementation Method 2
a clutch configured to selectively transfer torque from the motor to the compressor to drive the compression device
Data Source
AI summary
The present embodiments provide a system having a motor, a compressor having a compression device configured to increase a pressure of a gas, a clutch configured to selectively transfer torque from the motor to the compressor to drive the compression device, and a controller configured to disengage the clutch if the pressure of the gas in the compressor meets or exceeds a first threshold pressure.