Compressor Oiling Device with Temperature-Adaptive Pressure Control
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Solution Overview
Problem
Conventional oiling devices for compressors do not consider oil temperature, leading to unnecessary energy consumption due to overfeeding of oil at high temperatures, as they rely on fixed interlock values that do not account for viscosity changes with temperature.
Innovation Solution
An oiling device with a control unit that adjusts abnormality pressure set values based on oil temperature, preventing overfeeding by reducing oiling pressure at higher temperatures, thus optimizing energy usage by avoiding wasteful increases in oil flow and pump power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed interlock value for oiling pressure is set to ensure sufficient oiling at low temperatures, then oiling reliability is improved, but energy consumption increases due to overfeeding of oil at high temperatures
Solution Approach 1:
The patent applies dynamics by making the oiling pressure set value variable rather than fixed. The control unit dynamically adjusts the oiling pressure set value based on detected oil temperature, reducing it when oil temperature is high and increasing it when oil temperature is low. This dynamic adjustment ensures reliable oiling across all temperature conditions while avoiding energy waste from overfeeding at high temperatures.
Solution Approach 2:
The patent changes the parameter of oiling pressure set value according to oil temperature. The control unit stores multiple oiling pressure set values corresponding to different oil temperatures and selects the appropriate set value based on the detected temperature. This parameter change allows the system to maintain optimal oiling performance across varying temperature conditions without unnecessary energy consumption.
2Reliability
If the oil pump size is increased to ensure sufficient oil flow at high temperatures, then oiling sufficiency is improved, but device complexity and energy consumption increase
Solution Approach 1:
The patent avoids increasing device complexity by using a control unit that dynamically adjusts operating parameters rather than redesigning the oil pump. The control unit modifies the oiling pressure set value based on temperature conditions, allowing the existing oil pump to operate efficiently across different temperatures without requiring a larger pump capacity.
Solution Approach 2:
The patent changes the operating parameters of the existing oil pump system rather than increasing the pump size. By adjusting the oiling pressure set value according to oil temperature, the system maintains sufficient oil flow without requiring a larger pump, thus avoiding increased device complexity and energy consumption.
3Reliability
If a high oiling pressure set value is used to ensure sufficient oiling at low temperatures, then oiling reliability is improved, but oil flow becomes excessive at high temperatures causing energy waste
Solution Approach 1:
The patent applies dynamics by making the oiling pressure set value temperature-dependent. The control unit adjusts the set value in real-time based on detected oil temperature, ensuring that high pressure is applied only when necessary (low temperatures) and reducing pressure when oil is less viscous (high temperatures), thereby preventing energy waste from excessive oil flow.
Solution Approach 2:
The patent changes the oiling pressure parameter according to oil temperature conditions. The control unit stores multiple pressure set values corresponding to different temperatures and selects the appropriate one, ensuring optimal pressure application that prevents both insufficient oiling and excessive oil flow, thereby minimizing energy loss.
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 reduces energy consumption by ensuring the necessary amount of oiling is maintained without overfeeding, even at high temperatures, thereby minimizing power requirements and agitation losses in the compressor system.
Implementation Method 1
an oil pump that generates the oiling pressure
Implementation Method 2
an oiling pressure detecting unit that detects an oiling pressure that is a pressure of the oil fed to the oiling object through the passage system
Implementation Method 3
an oiling temperature detecting unit that detects an oiling temperature that is a temperature of the oil fed to the oiling object through the passage system
Implementation Method 4
the control unit controls the rotational frequency of the oil pump motor
Data Source
AI summary
An oiling device includes a passage system that circulates and feeds oil to an oiling object. A control unit includes a storage unit that has stored therein a first abnormality pressure set value that differs according to oiling temperature; the first abnormality pressure set value is set to a lower pressure as the oiling temperature is higher. The control unit executes an abnormal stop of the oiling object when an oiling pressure detected by an oiling pressure detecting unit is equal to or lower than the first abnormality pressure set value corresponding to an oiling temperature detected by an oiling temperature detecting unit.