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Title:
SELF-CLEANING COFFEE BREWING DEVICE AND COFFEE PREPARATION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/006983
Kind Code:
A1
Abstract:
Provided are a self-cleaning coffee brewing device and a coffee preparation method thereof, the self-cleaning coffee brewing device comprising: a brewing device (01), a pressure relief valve (02), a pressure accumulation valve (03) and a coffee outlet tube (04), wherein the brewing device (01) is provided with a brewing head (011), a coffee box (012) and a ground pushing rod (013), the pressure accumulation valve (03) is arranged at a brewing head outlet (0111), the pressure accumulation valve (03) can control the opening and closing states of a tube of the brewing head outlet (0111), the pressure relief valve (02) is arranged at a ground pushing rod inlet (0131), and a pressure relief port (023) of the pressure relief valve can control the opening and closing states. By means of controlling the respective opening and closing states of the pressure relief valve (02) and the pressure accumulation valve (03) for operative work, residual coffee liquid in the tube is effectively and inversely sucked from the brewing head outlet (0111) to a coffee outlet tube outlet end (042), and is discharged to a waste water tray (07) from the pressure relief port (023) of the pressure relief valve, so that the dry humidity of a coffee ground cake is guaranteed, and the coffee ground cake is prone to forming a hard block and then being pushed out for discharging grounds, and the quality of each cup of coffee and the self-cleaning capacity of the coffee machine are improved.

Inventors:
HUANG, Zicong (No.2, Peiyuan Road Science & Technology Tower, Hi-Tech Are, Suzhou Jiangsu 0, 215000, CN)
Application Number:
CN2017/114814
Publication Date:
January 10, 2019
Filing Date:
December 06, 2017
Export Citation:
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Assignee:
SUZHOU DR.COFFEE SYSTEM TECHNOLOGY CO., LTD (No.2, Peiyuan Road Science & Technology Tower, Hi-Tech Are, Suzhou Jiangsu 0, 215000, CN)
International Classes:
A47J31/00; A47J31/60
Attorney, Agent or Firm:
SUZHOU GROUNZE INTELLECTUAL PROPERTY AGENCY CO., LTD. (Room 608, Building 2 Wanbao Commercial Plaza, No.1580 Donghuan Road, Suzhou Industrial Par, Suzhou Jiangsu 1, 215021, CN)
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