Title:
SPRAY NOZZLE DEVICE USED FOR HIGH PRESSURE WASHER, AND HANDHELD HIGH PRESSURE WASHER
Document Type and Number:
WIPO Patent Application WO/2020/043032
Kind Code:
A1
Abstract:
A spray nozzle device (30) used for a high pressure washer (100). The spray nozzle device (30) comprises: a spray nozzle, the spray nozzle comprising a spray nozzle housing (31), a water outlet channel (310) being provided within the spray nozzle housing (31), and a front end of the spray nozzle housing being provided with at least one liquid discharging port (313) communicating with the water outlet channel (310); an exhaust valve (33) connected to the spray nozzle housing (31) and comprising a valve seat (330), a valve cavity (3302) being provided within the valve seat; and a valve core (332) movably provided within the valve cavity (3302). The valve seat (330) is provided with an air inlet hole (3304) and an air outlet hole (3306), the water outlet channel (310) and a primary exhaust passage are provided in parallel within the spray nozzle housing (31), and the valve core (332) is movable relative to the valve cavity (3302) to a closed position for blocking the primary exhaust passage and an open position for connecting the primary exhaust passage. By providing the exhaust valve (33), when the exhaust valve (33) is in the open position, an exhaust function is achieved; and when the exhaust valve (33) is in the closed position, a water outlet function is achieved, realizing self-suction and ensuring rapid elimination of pressure abnormality in a short period of time during use, and satisfying usage requirements.
Inventors:
QIAO YONG (CN)
WANG QIBIN (CN)
CHENG YAJIE (CN)
WANG QIBIN (CN)
CHENG YAJIE (CN)
Application Number:
PCT/CN2019/102427
Publication Date:
March 05, 2020
Filing Date:
August 26, 2019
Export Citation:
Assignee:
POSITEC POWER TOOLS SUZHOU CO LTD NON SMALL ENTITY (CN)
International Classes:
B08B3/02; B05B9/03
Domestic Patent References:
| WO2006095466A1 | 2006-09-14 |
Foreign References:
| CN108212585A | 2018-06-29 | |||
| CN205762555U | 2016-12-07 | |||
| CN104741334A | 2015-07-01 | |||
| CN107073525A | 2017-08-18 | |||
| US20150108253A1 | 2015-04-23 |
Attorney, Agent or Firm:
SUZHOU JINHE INTELLECTUAL PROPERTY AGENCY (SPECIAL GENERAL PARTNERSHIP) (CN)
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