Integrated Electronic Expansion Valve for Simpler Sensor Wiring
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Solution Overview
Problem
The assembly process of electronic expansion valves in cooling systems is complex due to the separate connections required for sensors and electronic control components, leading to increased connection harness and reduced assembly convenience.
Innovation Solution
An integrated electronic expansion valve design that includes a valve core assembly, electronic control portion, and sensor, where the sensor is directly connected to the electronic control board, reducing the need for separate connections and simplifying assembly, with a compact structure that integrates the stator assembly and electronic control board for improved integration and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensors and electronic expansion valve are respectively connected with the cooling system through the pipeline, then the flow control accuracy of the working medium is improved, but the assembly process becomes complicated
Solution Approach 1:
The patent integrates the sensor directly into the electronic expansion valve assembly, combining previously separate components (sensor, electronic control portion, and valve core assembly) into a single integrated unit. This merging eliminates the need for separate pipeline connections while maintaining measurement accuracy for flow control.
2Measurement precision
If sensors and electronic expansion valve are respectively connected with the cooling system through the pipeline, then the flow control accuracy of the working medium is improved, but the connection harness increases
Solution Approach 1:
By integrating the sensor into the electronic expansion valve assembly with direct electrical connection to the electronic control board, the patent eliminates multiple separate connection harnesses. The sensor, stator assembly, and electronic control board are electrically connected within the integrated structure, reducing the overall quantity of connection harness required.
3Reliability
If the sensor is directly welded to the lower housing in a sealing manner, then the sealing performance is enhanced, but the manufacturing complexity increases
Solution Approach 1:
The sensor is pre-assembled with its sealing structure (including the guiding portion, main body portion, and sealing arrangement at the through hole) before integration into the electronic expansion valve. This preliminary preparation of sealing components facilitates the welding process and ensures reliable sealing while managing manufacturing complexity through structured assembly steps.
Data Source
AI summary
An electronic expansion valve and a manufacturing method therefor, a thermal management assembly and a cooling system are provided. The electronic expansion valve includes a valve core assembly, an electronic control part and a stator assembly. The valve core assembly includes a valve base, a valve core and a rotor assembly, wherein the valve base is provided with a valve port, and the valve core moves relative to the valve base to change the degree of opening of the valve port. The electronic control part controls the stator assembly, and the rotor assembly drives the valve core to move. The electronic expansion valve further includes a sensor, the electronic control part includes an electronic control board, and the stator assembly and the sensor are both directly electrically connected to the electronic control board. The thermal management assembly and the cooling system both include the electronic expansion valve.