Title:
LIQUID PUMPING PROTECTION METHOD AND AIR PUMP LIQUID PUMPING PROTECTION DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/160561
Kind Code:
A1
Abstract:
A liquid pumping protection method, comprising the following steps: S1. driving, under power of an air pump, air to be pumped to enter a first-stage liquid deposition cavity, in which a possible liquid is deposited at the bottom of the first-stage liquid deposition cavity; S2. driving, under the power of the air pump, the air and/or the liquid in the first-stage liquid deposition cavity to enter an air-liquid mixing structure, bubbles being formed at the air-liquid mixing structure when there is the liquid in the pumped air; and S3. detecting the sound and/or pressure in an air path in real time during operation of the air pump, and when information of bubble characteristics is detected, identifying that there is the liquid in the air path, and making a protection action. Therefore, when there is the liquid in the air path, reliable identification can be performed, and identification and protection are completed before the liquid is pumped into the air pump. Also provided is air pump liquid pumping protection device, comprising at least one stage of liquid deposition cavity (2, 3), at least one air-liquid mixing structure (4), and a bubble identification device, wherein the tail end of the air-liquid mixing structure (4) extends into the first-stage liquid deposition cavity (2). According to the device, detection failure caused by juice covering an electrode or contaminating an air path channel in the electrode detection method and the photoelectric detection method is avoided, the reliability is high, and timely protection is achieved.
Inventors:
WEI HEYU (CN)
Application Number:
PCT/CN2023/077530
Publication Date:
August 31, 2023
Filing Date:
February 22, 2023
Export Citation:
Assignee:
SHENZHEN DITUO ELECTRONIC CO LTD (CN)
International Classes:
B65B31/06; B65B31/04; G01N29/02
Foreign References:
| CN114576151A | 2022-06-03 | |||
| CN217327613U | 2022-08-30 | |||
| US20060026928A1 | 2006-02-09 | |||
| CN102147393A | 2011-08-10 | |||
| US20130232925A1 | 2013-09-12 | |||
| US20080308177A1 | 2008-12-18 | |||
| CN1703349A | 2005-11-30 | |||
| CN210822943U | 2020-06-23 | |||
| US20050039420A1 | 2005-02-24 | |||
| US20050044814A1 | 2005-03-03 | |||
| US20210323708A1 | 2021-10-21 |
Attorney, Agent or Firm:
LIUJIA CHINA IP LAW OFFICE (CN)
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