Pump Casing Differential Pressure Sensor Integration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing designs for pump housings with integrated differential pressure sensors require costly tooling and lost cores for duct formation, especially in large-scale production, and often measure pressure at a point that does not accurately represent the line pressure on the outlet side of the pump.
Innovation Solution
A pump housing design featuring a receptacle for the differential pressure sensor with straight channels that connect to both the suction and pressure sides, allowing for easy manufacturing and accurate pressure measurement by positioning the sensor channels at right angles within the pump housing, where machining is already necessary, and using a bore that aligns with the impeller axis for the pressure-side channel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If channels are molded into the pump housing using lost cores, then the differential pressure sensor can be integrated into the pump housing, but the manufacturing cost increases significantly
Solution Approach 1:
The invention extracts the sensor channels from the pump housing structure itself and implements them as separate, attachable components. The sensor housing with integrated channels is mounted on the pump housing rather than being molded into it, eliminating the need for complex lost core tooling while maintaining sensor integration functionality.
Solution Approach 2:
The sensor channels are segmented into separate components (sensor housing and pump housing) rather than being a single integrated molded piece. This allows the channels to be manufactured independently using simpler processes and then assembled together, reducing overall manufacturing complexity and cost.
2Device complexity
If the receptacle is located inside the pump housing next to the suction port, then the sensor channels can be short, but the pressure measurement on the pressure side does not accurately represent the line pressure
Solution Approach 1:
The invention extends the sensor housing externally from the pump housing in the direction away from the suction port. This spatial extension in another dimension allows the pressure sensing opening to be positioned at the outlet side of the pump where it accurately measures line pressure, while the sensor itself remains mounted on the pump housing structure.
3Ease of manufacture
If straight channels are used instead of molded channels, then manufacturing becomes simpler, but the receptacle location must be changed
Solution Approach 1:
The sensor housing is pre-configured with straight channels during its separate manufacturing process, before being mounted on the pump housing. This preliminary preparation allows the channels to be optimized for simple manufacturing (as straight bores) while the final positioning of the receptacle is determined by the mounting location on the pump housing, which is designed to accommodate this configuration.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The housing has a suction channel (14) led into a chamber (15) for arrangement of a gyro wheel rotated at a rotational axis (5). The suction channel has helical rotating channels (16) opened to the chamber and led into a pressure channel. A sensor channel (22) connects a retainer (20) in a form of hole for a differential pressure sensor, with a suction-side interior of the housing. Another sensor channel (23) connects the retainer with a discharge side interior of the housing. The retainer is arranged between the helical rotating channels and the suction channel.