Title:
WATER SUPPLY SYSTEM AND FLOOR CLEANING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2023/071815
Kind Code:
A1
Abstract:
A water supply system (10), comprising a main water tank (110) which has a hollow structure with a first cavity provided therein, the main water tank (110) being provided with a vent hole (111) which is embedded with a one-way air permeable portion (112), the one-way air permeable portion (112) providing a unidirectional communication in a direction from the outside of the main water tank (110) to the first cavity. According to the solution, by embedding a one-way air-permeable portion (112) in the vent hole (111) of the main water tank (110), external air can enter the first cavity smoothly when the water level in the main water tank (110) drops, in order to avoid an imbalance between the air pressure in the first cavity and the air pressure outside the main water tank (110) from deforming the main water tank (110).
Inventors:
LI GUANGHUI (CN)
LU LI (CN)
ZENG GUOPING (CN)
YANG DONG (CN)
WANG YONGGAO (CN)
LU LI (CN)
ZENG GUOPING (CN)
YANG DONG (CN)
WANG YONGGAO (CN)
Application Number:
PCT/CN2022/125129
Publication Date:
May 04, 2023
Filing Date:
October 13, 2022
Export Citation:
Assignee:
NILFISK AS (DK)
International Classes:
A47L11/24; A47L11/28; A47L11/40; E01H1/10
Foreign References:
| CN113925394A | 2022-01-14 | |||
| CN112815116A | 2021-05-18 | |||
| CN209003841U | 2019-06-21 | |||
| CN106108797A | 2016-11-16 | |||
| CN203841631U | 2014-09-24 | |||
| CN206080418U | 2017-04-12 | |||
| JPH02105734U | 1990-08-22 |
Attorney, Agent or Firm:
LINDA LIU & PARTNERS (CN)
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