Integrated Air Oil Filter Group for Hydraulic Tank Inlet
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Solution Overview
Problem
Existing hydraulic plants face limitations in oil flow rate due to the need for small oil filter elements and complex maintenance procedures, particularly with integrated air and oil filter groups that require a separate air passage hole and cumbersome access for filter element replacement.
Innovation Solution
An air and oil filter group design where the air filter housing is positioned within the hollow body's second chamber, eliminating the need for an air passage hole and allowing easy access and replacement of both air and oil filter elements without dismounting the hollow body, enabling larger oil filter elements and simplified maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an integrated air and oil filter group is designed with a separate air passage hole, then air filtering function is improved, but device complexity and installation complexity increase
Solution Approach 1:
The patent combines the air passage and oil passage through a single common hole in the tank wall. The hollow body structure integrates both air filter housing and oil filter housing, allowing air and oil to enter through the same opening while being filtered separately. This merging approach eliminates the need for separate air and oil passage holes, reducing device complexity and installation requirements while maintaining both filtering functions.
Solution Approach 2:
The air filter housing is positioned within the hollow body, nested inside the oil filter assembly. The air filter element is housed within the hollow body structure, which itself is installed through the common hole in the tank wall. This nested arrangement allows both filters to coexist in a compact configuration, sharing the same installation space and access point without interfering with each other's functionality.
2Ease of repair
If traditional filter access design is used, then filter element replacement is possible, but maintenance time and complexity increase
Solution Approach 1:
The filter group is segmented into modular components: the hollow body, air filter housing, oil filter housing, and各自的 filter elements. Each filter element can be independently accessed and replaced. The air filter housing can be removed from the hollow body, and the oil filter element can be accessed through the housing, allowing separate maintenance of each filter without disassembling the entire assembly or removing the hollow body from the tank.
Solution Approach 2:
The hollow body is pre-designed with a removable air filter housing and an oil filter housing that allows easy access to the oil filter element. The structure is prepared in advance with these access mechanisms, so that during maintenance, technicians can quickly remove and replace filter elements without complex disassembly procedures. The air filter housing is designed to be detachably mounted, allowing preliminary preparation for easy maintenance access.
3Volume of moving object
If small oil filter elements are used, then device compactness is improved, but oil flow rate decreases
Solution Approach 1:
The hollow body is designed with a three-dimensional chamber structure that provides adequate internal volume for housing larger oil filter elements. The hollow body extends into the tank interior, utilizing the vertical and radial dimensions to create sufficient space. This dimensional arrangement allows the oil filter element to have adequate surface area and flow capacity without increasing the horizontal footprint or overall device compactness, resolving the contradiction between size and flow rate.
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 design enhances oil flow rates by allowing larger oil filter elements and simplifies maintenance by providing easy access to both air and oil filter elements, reducing maintenance time and complexity while maintaining a compact structure.
Implementation Method 1
a first seating (8) for receiving an oil filter element (9), which first seating (8) is arranged so that the oil coming from the oil inlet (6) can be filtered by the oil filter element (9)
Implementation Method 2
a second seating (27) for receiving an air filter element (29), which second seating (27) is arranged so that the air coming from the air inlet (25) can be filtered by the air filter element (29)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An air and oil filter group, couplable to a wall of an oil tank (13) at a through- hole for oil inlet (22) made in a same wall (12) as the oil tank (13), comprises; a housing (5) for an oil filter element (9) which is insertable in the oil inlet through-hole (22); a housing (28) of an air filter element (29); a hollow body (15) which is fixable to the wall (12) of the oil tank (13) at the oil inlet through- hole (22) and which is provided with a chamber (17), a first conduit connectable to the housing (5) of the oil filter element (9), a second conduit which is facing the first conduit and which enables accessing the oil filter element (9), a third conduit connectable to an oil supply and a fourth conduit; a bypass conduit (40) for placing the fourth conduit (39) in fluid communication with the chamber (14) of the oil tank (13). The hollow body (15) and the housing (28) of the air filter element (29) are dimensioned with respect to one another so that: the housing (28) of the air filter element (29) can be inserted in and extracted from the chamber (17) of the hollow body (15) through the second conduit (18); when the housing (28) of the air filter element (29) is inserted in the chamber (17) of the hollow body (15), the air can flow from outside through the second conduit, the air filter element (29), the fourth conduit and the chamber (14) of the oil tank (13).