Sealed Compressor Feedthrough Protection Using Parameter Detection
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Solution Overview
Problem
Transport climate control systems face challenges in preventing the melting of sealed electrical feedthroughs in compressors, which can lead to structural failure and refrigerant leakage, posing safety risks and compromising climate control efficacy.
Innovation Solution
Implementing a method that detects operating parameters such as amperage and suction pressure to determine if the sealed electrical feedthrough is in a melting condition, and adjusting the climate control circuit operations by interrupting electrical power or opening the electronic expansion valve to prevent overheating and melting, thereby maintaining the integrity of the feedthrough.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical power is continuously supplied to the sealed compressor to maintain climate control operation, then the climate control system maintains its cooling function, but the sealed electrical feedthrough may overheat and melt causing structural failure
Solution Approach 1:
The system performs preliminary detection of operating parameters (amperage, suction pressure) to identify melting conditions before they cause actual damage. By detecting these parameters and comparing them against predetermined thresholds, the system takes preventive action before the feedthrough melts, maintaining reliability while allowing continuous operation under normal conditions.
Solution Approach 2:
The system continuously monitors operating parameters of the sealed electrical feedthrough and uses this feedback to determine whether melting conditions exist. Based on this feedback, the controller automatically adjusts operation by interrupting electrical power when melting conditions are detected, creating a closed-loop control system that balances continuous operation with feedthrough protection.
2Power
If the climate control circuit operates at high amperage to meet cooling demands, then the cooling capacity increases, but the sealed electrical feedthrough experiences excessive heating
Solution Approach 1:
The system monitors amperage as a feedback parameter to detect conditions that lead to excessive heating. When the detected amperage indicates melting conditions, the system responds by interrupting electrical power, thereby preventing temperature from reaching damaging levels while allowing high power operation when safe.
Solution Approach 2:
The system changes the operating parameter of electrical power supply based on detected conditions. By interrupting electrical power when melting conditions are detected, the system dynamically adjusts the power parameter to prevent excessive temperature rise, allowing the system to operate at high power when safe and reduce power when thermal limits are approached.
3Reliability
If the system interrupts electrical power to the sealed compressor to protect the feedthrough, then the feedthrough temperature decreases preventing melting, but the climate control function stops
Solution Approach 1:
The system takes preliminary protective action by interrupting electrical power only when melting conditions are detected through parameter monitoring. This preliminary detection and response mechanism protects feedthrough integrity while minimizing interruptions to climate control function, as power is maintained during normal operation and only interrupted when necessary.
Solution Approach 2:
The system uses feedback from operating parameter detection to control when electrical power is interrupted. The controller continuously monitors parameters and uses this feedback to make real-time decisions about power interruption, ensuring feedthrough protection while maintaining climate control function whenever possible and only interrupting power when melting conditions are present.
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 approach effectively prevents the melting of sealed electrical feedthroughs, ensuring the reliability and safety of the climate control system by maintaining the structural integrity of the compressor and preventing refrigerant leakage, thus maintaining optimal climate control conditions.
Implementation Method 1
a sealed electrical feedthrough for supplying electrical power to an electrical motor of the sealed compressor
Implementation Method 2
a sealed compressor for compressing the working fluid
Implementation Method 3
detecting an operating parameter of the sealed electrical feedthrough... determining whether the sealed electrical feedthrough is in a melting condition based on the detected operating parameter
Data Source
AI summary
A method of feedthrough and overcurrent protection of a sealed compressor used in a transport climate control system (“TCCS”) is provided. The TCCS includes a climate control circuit with a sealed compressor. The sealed compressor includes an outer housing and an electrical motor within the outer housing. The method includes operating the sealed compressor to compress a working fluid by supplying electrical power to the electric motor of the sealed compressor via a sealed electrical feedthrough in the outer housing of the sealed compressor. The method also includes detecting an operating parameter of the sealed electrical feedthrough, and determining whether the sealed electrical feedthrough is in a melting condition based on the detected operating parameter. Also, the method includes adjusting operation of the climate control circuit upon determining that the sealed electrical feedthrough is in the melting condition until the sealed electrical feedthrough is no longer in the melting condition.