Fluid Control Apparatus Width Reduction via Dimensional Shift
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Solution Overview
Problem
Existing fluid control apparatuses in semiconductor manufacturing occupy excessive space due to wide line widths, particularly in accommodating flow-rate adjustment devices which require larger lengths than standard fluid control devices.
Innovation Solution
The apparatus integrates extended flow-channel blocks with support flow-channel blocks, featuring a large and small block portion configuration, where the small block portion has a lower surface flushed with the large block portion and a male-screw-member insertion hole, allowing for reduced width mounting without additional screw insertion holes, and utilizing a seal means for sealing between the blocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If support flow-channel blocks are mounted with male screw members at opposite sides in the widthwise direction, then reliable mounting is achieved, but the width of the apparatus increases
Solution Approach 1:
The patent transitions from mounting screw members in the widthwise direction (horizontal dimension) to mounting them in the lengthwise direction (longitudinal dimension). This dimensional change allows the seal portion to be positioned between the support flow-channel block and extended flow-channel block without requiring additional width, thus resolving the contradiction between mounting reliability and apparatus width.
2Strength
If screw insertion holes are provided at opposite sides with seal portion sandwiched, then secure connection is achieved, but width reduction becomes difficult
Solution Approach 1:
The patent introduces asymmetry in the positioning of screw insertion holes and seal portions. Instead of symmetric placement at opposite sides, the screw insertion holes are positioned at opposite sides in the lengthwise direction while the seal portion is placed in between, creating an asymmetric layout that reduces width while maintaining connection strength.
Solution Approach 2:
The patent repositions the screw insertion holes from the widthwise direction to the lengthwise direction, utilizing the longitudinal dimension for mounting purposes. This allows the seal portion to occupy the space between blocks without compromising connection strength, effectively reducing the required width.
3Measurement precision
If flow-rate adjustment devices with larger lengths are used, then fluid control precision is improved, but the space occupied by the apparatus increases
Solution Approach 1:
The patent accommodates the larger length of flow-rate adjustment devices by utilizing the lengthwise direction for mounting support flow-channel blocks, rather than expanding in the widthwise direction. This allows precise flow control devices to be installed without increasing the overall apparatus width, maintaining compact spatial footprint.
Data Source
AI summary
There is provided a fluid control apparatus which enables reducing widths of lines for further reducing space occupied by the apparatus. Support flow-channel blocks 9 and 10 are constituted by large block portions 25 and 27 which have openings of fluid flow channels 9a and 10a abutted against openings of fluid flow channels 11c and 11d in extended flow-channel blocks 11a and 11b with seal portions 20 interposed therebetween and, also, are abutted against lower surfaces of the extended flow-channel blocks 11a and 11b, and small block portions 26 and 28 which have lower surfaces flushed with the large block portions 25 and 27 and have heights smaller than those of the large block portions. The small block portions 26 and 28 are provided with male-screw-members insertion holes 26a and 28a for mounting the support flow-channel blocks 9 and 10 to a base member 30.