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1. (WO2018103153) OVERPRESSURE PROTECTION DEVICE FOR PORTABLE MINIATURE HIGH-PRESSURE COFFEE MACHINE

Pub. No.:    WO/2018/103153    International Application No.:    PCT/CN2016/112379
Publication Date: Fri Jun 15 01:59:59 CEST 2018 International Filing Date: Wed Dec 28 00:59:59 CET 2016
IPC: F04B 53/14
F04B 53/12
F04B 53/04
F04B 53/16
A47J 31/58
Applicants: SHENZHEN STARESSO CULTURE CO., LTD
深圳星粒文化传播有限公司
Inventors: ZHAO, Kai
赵凯
Title: OVERPRESSURE PROTECTION DEVICE FOR PORTABLE MINIATURE HIGH-PRESSURE COFFEE MACHINE
Abstract:
Provided are an overpressure protection device for a portable miniature high-pressure coffee machine. The overpressure protection device comprises a pump barrel and a pump plug having a main body provided within the pump barrel. The pump plug is provided with a water incoming one-way valve, an upper hole, and a water outlet hole. The pump barrel is provided with a water incoming port at a corresponding location to an opening at a water incoming end of a valve port of the water incoming one-way valve. The upper hole and water outlet hole are in communication with the valve port of the water incoming one-way valve. The upper hole is in communication with the interior of the pump barrel. The pump plug is provided with a pressure-relief structure to remove water in the pump barrel when the water is under a high pressure, and comprises a water drainage structure to return the water removed by the pressure-relief structure back to the exterior of the pump barrel. The overpressure protection device of the present invention occupies a small space, has a simple and compact structure, is safe and reliable, and provides a stable effect, thus solving the overpressure protection problem of a portable miniature high-pressure coffee machine.