PRESSURE WASHER AND METHOD OF OPERATING A PRESSURE WASHER WITH ELECTRONIC PRESSURE/FLOW CONTROL AND DISPLAY

    公开(公告)号:US20190210074A1

    公开(公告)日:2019-07-11

    申请号:US16326854

    申请日:2017-09-07

    发明人: Yin CHEN

    IPC分类号: B08B3/02 B05B9/01 B05B7/24

    摘要: A pressure washer (10) includes a pump (12), a hose (14), a wand (16) and first and second nozzle configurations (18a, 18b). A control (30) is electrically coupled to an electric motor (20) for running the pump (12). The control (30) senses the level of electric current being drawn by the electric motor (20) during operation and, in response, automatically adjusts the level of electric current drawn by the electric motor (20) between at least a first level and a second, different level. This changes the rate of rotation of the motor output (20a) depending on whether the first nozzle configuration (18a) or the second nozzle configuration (18b) is coupled in fluid communication with the wand (16). An electronic display (40) is coupled to the control (30). The control (30) senses the output pressure from the pump (12) and provides an electronic indication to the user on the display (40) to show at least a relative pressure condition.

    ELECTRICAL DEVICE AND METHOD HAVING AN ELECTRICAL CORD SET CONVERTIBLE BETWEEN DIFFERENT ELECTRICAL AMPERAGE RATINGS

    公开(公告)号:US20190181718A1

    公开(公告)日:2019-06-13

    申请号:US16325748

    申请日:2017-08-22

    摘要: An electrically operated device (10) includes an electric motor (36) with an electrical cord set (30). The cord set (30) includes an electrical connecting plug (80) for coupling with an AC electrical outlet. The device (10) further includes a detector (46). A control (42) is electrically coupled to the motor (36) and electrically coupled to the detector (46) for controlling the level of electric current drawn by the electric motor (36) from the AC electrical outlet. The detector (46) detects whether the electrical connecting plug (80) is connected to a 15 Amp electric receptacle or to a 20 Amp electric receptacle and, in response, the control (42) establishes the electric profile of the electric motor (36) to correspond to the 15 Amp electric receptacle or to the 20 Amp electric receptacle.