Heat Exchanger Valve Bushing Notches for Precise Flow Pre-Setting
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Solution Overview
Problem
Existing heat exchanger valves face challenges in precise adjustment of pre-setting means due to the lack of defined angular positions, leading to difficulties in correctly adapting the throttling resistance to match the heat exchanger and associated piping.
Innovation Solution
The introduction of a bushing with notches on its edge, which form openings that define specific pre-setting positions when combined with a conical counter face, allowing for precise adjustment of fluid flow by rotating the bushing to align notches with a counter passage, thereby controlling the throttling resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a slot in a circumferential wall with unlimited angular positions is used for pre-setting means, then the device complexity is reduced, but the measurement precision of pre-setting position is insufficient
Solution Approach 1:
The bushing is segmented with multiple notches (at least two notches) formed in its edge, each notch defining a specific angular position. This segmentation provides discrete, predefined opening positions that improve measurement precision while keeping the overall structure simple.
Solution Approach 2:
The notches are positioned at specific locations around the bushing circumference, creating local openings with defined angular positions. Each notch provides a specific local quality (opening/closed state) that contributes to precise pre-setting control.
2Adaptability or versatility
If multiple notches of different sizes are provided in the bushing, then the adaptability of pre-setting options is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The bushing includes notches of different sizes (at least two notches of different sizes and at least two notches of the same size) to provide segmented flow options. This allows different pre-setting configurations (single notch, dual notches, combinations) to achieve various flow rates through the heat exchanger.
Solution Approach 2:
The multiple notches serve multiple functions: they can be used individually or in combination, provide different flow areas, and enable both single-opening and dual-opening pre-setting modes. This multi-functionality increases adaptability for different flow requirements.
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 solution enables precise control over fluid flow through the heat exchanger valve, allowing for multiple pre-setting adjustments with defined positions, ensuring consistent fluid flow and reduced throttling resistance, while maintaining tightness and simplicity in manufacturing and installation.
Implementation Method 1
the combination of the conical form of the bushing and of the counter face
Implementation Method 2
the bushing comprises at least two notches in an edge facing the valve element member, each of the notches forming an opening
Data Source
AI summary
A heat exchanger valve includes a housing (2) having an inlet, an outlet a valve seat (5) on a valve seat member (24) between inlet and outlet, a valve element cooperating with the valve seat (5) and having a valve element axis, and presetting mechanism having a bushing (9) which is rotatable around the valve element axis and has an opening arrangement cooperating with a counter passage in the housing (2), wherein in the region of the opening arrangement the bushing (9) has a conical form cooperating with a conical counter face (13) and a distance is provided between the bushing (9) and the valve seat member (24). Such a heat exchanger valve should allow a precise pre-setting over a large range. To this end the bushing (9) has at least two notches (14) in an edge (10) facing the valve element member (24), each of the notches (14) forming an opening (25).