一种双阀针电子膨胀阀阀针组件
By welding the bearing retaining ring to the inner valve needle and using the sealing force of the pre-tightening spring, the internal leakage and pressure balance problems of the valve needle assembly of the dual-valve needle electronic expansion valve are solved, improving the practicality and reliability of the device.
CN224517075UActive Publication Date: 2026-07-17NINGBO TUOPU GROUP CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO TUOPU GROUP CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
The existing dual-valve needle electronic expansion valve needle assembly has internal leakage and pressure imbalance problems, which affect the reliability and energy-saving effect of the device.
Method used
By welding the bearing retaining ring to the inner valve needle, and combining the preload spring to provide sealing force, a hard seal is formed, optimizing the pressure balance, and improving the sealing performance through laser welding and clearance fit.
Benefits of technology
It effectively improved the internal leakage problem, enhanced the practicality and reliability of the device, ensured pressure balance during high and low pressure switching, and reduced transmission losses.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN224517075U_ABST
Abstract
本实用新型涉及电子膨胀阀阀针组件的技术领域，特别是涉及一种双阀针电子膨胀阀阀针组件，其通过阀芯组件结构能够改善内漏，优化平衡压力，轴承挡圈与内阀针之间焊接固定，能够保证轴承在安装之后无窜动，阀针和内阀针接触之后形成硬密封，靠预紧弹簧提供足够的密封力保证不会内漏，提高了装置的实用性；包括转子组件1、螺母组件2、阀座组件3以及阀针组件4；阀针组件包括螺杆、预紧弹簧、阀针套、内阀针、阀针、轴套、轴承挡圈、轴承、内环挡圈，预紧弹簧套装在螺杆的下部，内阀针位于阀针套内部，阀针的上部位于阀针套内下部，轴套套装在螺杆的下部且预紧弹簧的下部套装在轴套的上部，轴承安装在内阀针内腔，螺杆穿过轴承内圈。
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