Self-retaining, magnetically-coupled and directly-operated four-way reversing valve

US11525522B2 · kind B2 · utility

Assignee

• ZHUJI YIBA ELECTRONIC VALVE CO., LTD. · CN

Inventors

• Huajun Chen · Fangcun, CN
• Yulong Chen · 甘垛镇, CN
• Xiaoshui He · Zhejiang, CN

Key dates

• Filing date: Nov 25, 2019
• Grant date: Dec 13, 2022
• Expiry date: Apr 7, 2040

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H37/041
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Disclosed is a four-way reversing valve, including a valve body, a motor transmission structure, and a reversing valve disc; the valve body includes a valve seat, an insulation sleeve welded to upper end surface of the valve seat, a D pipe, an S pipe, a C pipe, and an E pipe connected to lower end surface of the valve seat; the motor transmission structure includes motor worm gear and shaft transmission assembly and a planetary gearbox kit; the motor worm gear and shaft transmission assembly is sleeved onto upper external wall of the insulation sleeve through shaft hole of an external drive sprocket, and a non-through blind-hole is formed in a valve seat center; a central shaft is embedded into the blind-hole, and the central shaft connects the reversing valve disc and the planetary gearbox kit; the reversing valve disc and the planetary gearbox kit are inside the insulation sleeve.