Rotatable Canister Filter Unit for Quick Cartridge Replacement
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Solution Overview
Problem
Existing water purification systems require the replacement of entire units when filters wear out, leading to inefficient recycling and increased waste, as well as cumbersome filter attachment and detachment processes.
Innovation Solution
A filter unit comprising a canister with a rotatably arranged filter cartridge, allowing for easy attachment and detachment by rotating the canister relative to a cap, while keeping the filter cartridge stationary, facilitating quick filter changes and recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the whole purifying device is replaced when filters are worn out, then the filters are replaced, but it is difficult to recycle the filter units efficiently and increases waste
Solution Approach 1:
The purifying device is divided into separate components: a reusable cap and a disposable filter unit. This segmentation allows only the filter cartridge to be replaced while recycling the cap, directly resolving the contradiction by enabling selective replacement and improving recyclability.
Solution Approach 2:
The filter cartridge is extracted as a separate replaceable component from the cap. The filter unit can be easily removed and replaced by rotating the canister, allowing the cap to be reused while only the consumable filter is discarded, reducing waste.
2Reliability
If the whole purifying device is replaced when filters are worn out, then the filters are replaced, but it is intensive for natural resources
Solution Approach 1:
By segmenting the device into reusable cap and disposable filter unit, material consumption is reduced since the cap is not discarded with each filter replacement, addressing the resource intensity issue.
Solution Approach 2:
The cap is recovered and reused while only the filter cartridge is discarded. This selective discarding and recovering approach reduces overall material consumption and aligns with sustainable resource management.
3Reliability
If both inlet and outlet connections need to be detached and attached properly, then the purifying device is replaced, but the process is cumbersome
Solution Approach 1:
The connection system is segmented into a cap with connection features and a filter unit with corresponding features. This allows the filter unit to be quickly attached or detached by simple rotation without handling both inlet and outlet connections separately, simplifying the operation.
Solution Approach 2:
Both inlet and outlet connections are merged into a single integrated cap structure. The filter unit connects to both passages simultaneously through one attachment action, eliminating the need to separately detach and attach multiple connections.
4Stability of the object's composition
If the filter cartridge is stationary to the cap when canister is rotated, then the filter cartridge does not rotate relative to the cap, but the canister needs rotatable attachment mechanism
Solution Approach 1:
The filter cartridge is nested within the canister, allowing the canister to rotate relative to the cap while the filter cartridge remains stationary relative to the cap. The nested arrangement enables the outer canister to provide rotational attachment while the inner filter cartridge maintains stable positioning.
Solution Approach 2:
The system is segmented into three components: cap, canister, and filter cartridge. This segmentation allows the canister to serve as the rotatable connection element while the filter cartridge remains stationary, achieving both rotational attachment capability and stable filter positioning without excessive complexity.
Data Source
AI summary
A filter unit is provided for filtering a liquid. The filter unit is intended to be connected to a cap including a first liquid passage and a second liquid passage 114. The filer unit includes: a canister; and a filter cartridge rotatably arranged within the canister, the filter cartridge includes a first filter connection for liquid to pass through, the first filter connection is intended to be connected to the first liquid passage in the cap, wherein the canister is intended to be rotatably attachable to the cap such that, when the canister is attached to the cap by a rotating action, the filter cartridge is stationary to the cap.