Split Tank Layout in a Flush Toilet for Low-Height Installation
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Solution Overview
Problem
Existing wall-mounted flush toilets with reduced height dimensions face challenges in accommodating a water storage tank and functional devices due to limited space, leading to interference and reduced capacity.
Innovation Solution
The flush toilet design incorporates a tank device with a first and second tank portion arranged on either side of the toilet body's center, where the second tank portion is shorter in the front-rear direction, allowing for compact accommodation of both the tank and functional devices, including a pump device, within the toilet body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the height dimension of the toilet body is reduced to achieve a low silhouette, then the aesthetic appearance is improved, but the space inside the toilet body is narrowed making it impossible to accommodate the water storage tank
Solution Approach 1:
The water storage tank is divided into a first tank portion and a second tank portion arranged on opposite sides of the toilet body center in the left-right direction. This segmentation allows the tank to be compacted into the limited internal space while maintaining sufficient capacity, resolving the contradiction between low silhouette and adequate storage volume.
Solution Approach 2:
The tank portions are arranged in the left-right direction rather than extending solely in the front-rear direction. This dimensional reorientation utilizes the horizontal space more effectively, allowing the tank to fit within the reduced internal volume while maintaining capacity.
2Shape
If the space inside the toilet body is reduced to achieve a low silhouette, then the aesthetic appearance is improved, but the water storage tank interferes with functional devices
Solution Approach 1:
By segmenting the tank into two portions arranged on opposite sides of the center, the design creates distinct zones that prevent interference between the tank and functional devices. The second tank portion is positioned to leave space behind it for functional device placement.
Solution Approach 2:
The second tank portion is designed with a length in the front-rear direction that is less than or equal to half the length of the first tank portion. This asymmetric design allows functional devices to be accommodated in the rear region behind the second tank portion, resolving the interference issue.
3Quantity of substance
If the tank device capacity is increased to ensure sufficient storage, then the water storage capacity is improved, but the tank device occupies more space interfering with functional devices
Solution Approach 1:
The tank device is segmented into two portions arranged on opposite sides of the toilet body center. This allows the total capacity to be distributed across two compact sections rather than requiring a single large volume, enabling sufficient water storage without excessive space occupation that would interfere with functional devices.
Data Source
AI summary
The flush toilet includes a toilet body including a bowl, a drain trap pipeline, and a skirt surrounding the bowl and the drain trap pipeline from the outside; a tank device disposed in a space that is inside the toilet body and that is located below the bowl, the tank device being configured to store flush water; and a functional device configured to supply flush water to the toilet body. The tank device includes a first tank portion and a second tank portion that are disposed on one side and another side, respectively, with respect to the center of the toilet body in the left-right direction in top view. The length of the second tank portion in the front-rear direction is set to be less than or equal to half the length of the first tank portion in the front-rear direction.