Oil Side-Stream Cleaning Device with Temperature-Controlled Bypass and Backflushing
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Solution Overview
Problem
Existing oil partial flow cleaning devices lack effective temperature control for filtration and efficient backflushing, which affects the cleaning efficacy and reliability of oil systems in internal combustion engines.
Innovation Solution
Incorporating a heating unit between the oil tank and filter unit for temperature regulation and a backflush unit with a backflush collecting tank and nozzle for controlled backflushing, allowing oil to bypass filtration when below a certain temperature and utilize filtered oil for backflushing when above the temperature threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If oil is filtered at low temperature, then filtration can proceed continuously, but filtration effectiveness deteriorates due to poor flow characteristics and particle separation
Solution Approach 1:
The heating unit preheats the oil before it enters the filter unit, preparing the oil in advance with optimal temperature and flow characteristics for effective filtration. This preliminary thermal preparation ensures that when oil enters the filter, it is already in the ideal state for particle separation, resolving the contradiction between continuous operation and filtration effectiveness.
2Reliability
If a heating unit is added to control oil temperature, then filtration effectiveness improves, but device complexity increases
Solution Approach 1:
The heating unit is integrated into the existing oil circuitry and filter assembly, merging the thermal processing function with the mechanical filtration system. This combination allows temperature control to be achieved without adding completely separate, independent systems, thereby improving filtration effectiveness while minimizing the increase in overall device complexity.
3Reliability
If backflushing is implemented to clean the filter medium, then filter unit reliability improves, but device complexity and operational complexity increase
Solution Approach 1:
The backflush system utilizes the oil circulation system itself to perform the cleaning function. Cleaned oil is redirected through the filter medium in reverse flow to remove accumulated particles, allowing the system to clean itself using its own operational resources. This self-service approach improves filter reliability while avoiding the need for entirely separate cleaning equipment or complex external intervention systems.
4Reliability
If oil is heated before filtration, then optimal filtration conditions are achieved, but energy consumption increases
Solution Approach 1:
The heating unit operates periodically rather than continuously, activating only when oil temperature drops below the optimal filtration threshold. This periodic operation maintains effective filtration conditions when needed while minimizing energy consumption during periods when heating is not required, thus resolving the contradiction between filtration effectiveness and energy usage.
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
Enhances filtration effectiveness by ensuring optimal oil temperature and facilitates efficient backflushing, increasing the overall performance and reliability of the oil partial flow cleaning device.
Implementation Method 1
a heating unit for the oil to be cleaned, which heating unit is installed between the oil tank and the filter unit so that, when the oil temperature is below a defined limit value
Implementation Method 2
when the device is in backflush mode, oil flows through the filter medium as a function of the position of the backflush nozzle relative to the filter medium
Data Source
AI summary
The oil side-flow cleaning device includes a heating unit (11) installed between the oil tank and the filter unit (10) so that, when the oil temperature is below a defined limit value, oil flows through the filter unit (10) in such a way as to bypass the filtering function and is heated; and so that, when the oil temperature is above the defined limit, oil flows through the filter unit (10) so as to be subjected to the oil filtering function. In addition or as an alternative, the oil side-flow cleaning device comprises a backflush unit including a backflush collecting tank (17) and a backflush nozzle (18), wherein, when the device is in backflush mode, oil flows through the filter medium (16) in a second, opposite direction as a function of the position of the backflush nozzle (18) relative to the filter medium (16).