Intelligent control high pressure and large flow cleaning device and control method thereof

Abstract

The application discloses a kind of intelligent control high-pressure and large-flow cleaning equipment and control method in the field of cleaning machine equipment.The equipment includes spray gun, high-pressure pump, brushless motor and controller, spray gun is equipped with superhigh pressure nozzle and high-pressure large-flow nozzle, controller is used to control and detect brushless motor, set maximum working pressure P1 corresponding maximum flow H1, maximum working flow H2 corresponding maximum working pressure P2, and H2≥125% H1, when using superhigh pressure nozzle, motor current is maximum rated current, corresponding speed V1;When using high-pressure large-flow nozzle, motor current does not exceed maximum rated current, corresponding speed V2, and V2≥125% V1;If V2 does not reach the value, adjust motor or high-pressure pump to meet H2≥125% H1.The application can intelligently identify nozzle type by current detection, automatically adjust motor speed, and significantly improve cleaning efficiency.

Claims

1. A smart control high-pressure and high-flow cleaning device, characterized in that, Includes a spray gun (2), a high-pressure pump (10), a brushless motor (11), and a controller (12); The outlet of the high-pressure pump (10) is connected to the spray gun (2) through the high-pressure connecting pipe (7). The brushless motor (11) drives the high-pressure pump (10) to form a high-pressure water flow, which is sprayed out through the spray gun (2). The spray gun (2) includes at least one ultra-high pressure nozzle (201) and a high-pressure high-flow nozzle (202). The controller (12) controls the operation of the brushless motor (11) and detects the working current of the brushless motor (11) in real time. The cleaning equipment is set with a maximum working pressure P1 and its corresponding working flow H1, a maximum working flow H2 and a working pressure P2 corresponding to the maximum working flow H2, and H2 ≥ 125% H1; When using the ultra-high pressure nozzle (201), the outputs are P1 and H1. At this time, the working current of the brushless motor (11) is the maximum rated current A1, and the corresponding motor speed is V1. When using a high-pressure, high-flow nozzle (202), outputs H2 and P2, corresponding to a target speed of V2 and a target operating current of A2 for the brushless motor (11), and A2 < A1. Achieving H2 ≥ 125% H1 includes: When the spray gun (2) switches to the high-pressure high-flow nozzle (202), the controller (12) detects the instantaneous operating current of the brushless motor (11) and adjusts it to A2, and releases or removes the speed limit of the brushless motor (11). If the speed of the brushless motor (11) does not reach the speed required to satisfy H2 ≥ 125% H1, the speed is increased by adjusting the winding parameters of the motor coil of the brushless motor (11) to satisfy H2 ≥ 125% H1, or the motor speed V1 is reduced by the controller (12) and the swashplate tilt angle of the high-pressure pump (10) is increased to satisfy H2 ≥ 125% H1.

2. The intelligent control high-pressure and high-flow cleaning equipment according to claim 1, characterized in that, The diameter of the ultra-high pressure nozzle (201) is smaller than that of the high pressure high flow nozzle (202).

3. The intelligent control high-pressure and high-flow cleaning equipment according to claim 1, characterized in that, It also includes at least one ultra-high voltage setting and one high voltage high current setting; The controller (12) detects the working current of the brushless motor (11) in real time according to the ultra-high pressure level and high-pressure high-current level of the cleaning equipment and any type of nozzle mounted on the spray gun (2), and controls the operation of the brushless motor (11) or puts the cleaning equipment into a shutdown protection state according to the detection results.

4. A control method for an intelligent high-pressure and high-flow cleaning device as described in any one of claims 1 to 3, characterized in that, include: The current working mode is configured by selecting the corresponding working gear according to the type of nozzle installed on the spray gun (2) and by using the controller (12); Set the corresponding current threshold, initial motor speed, and target speed for the current operating mode; When the cleaning device (1) is started in the current working mode, the controller (12) controls the brushless motor (11) to run at the initial speed of the motor corresponding to the current working mode, and detects the working current of the brushless motor (11) in real time. The real-time detected operating current is compared with the corresponding current threshold. When the preset switching conditions of the current working mode are met, the brushless motor (11) is controlled to switch to the target speed corresponding to the current working mode. Otherwise, the current speed is maintained.

5. The control method for intelligent high-pressure and high-flow cleaning equipment according to claim 4, characterized in that, The operating mode includes one or more of the following: (a) Ultra-high voltage working mode After the preset cleaning equipment (1) is started, the default initial speed of the brushless motor (11) is the first speed V1, and the preset first current threshold A3 is also set. (b) High-pressure, high-flow operating mode After the preset cleaning device (1) is started, the default initial speed of the brushless motor (11) is the second speed V2, and the preset second current threshold A4 is also set. (c) Multi-speed working mode The ultra-high pressure working mode corresponds to the ultra-high pressure setting, and the ultra-high pressure nozzle (201) is used in the ultra-high pressure setting. The high-pressure, high-flow operating mode corresponds to the high-pressure, high-flow setting, and the high-pressure, high-flow nozzle (202) is used in the high-pressure, high-flow setting.

6. The control method for intelligent high-pressure and high-flow cleaning equipment according to claim 5, characterized in that, The pressure and flow control method under the ultra-high pressure operating mode includes: When the cleaning equipment (1) is in the ultra-high pressure setting and the ultra-high pressure nozzle (201) is used, the controller (12) controls the brushless motor (11) to run at the first speed V1; The controller (12) detects the operating current of the brushless motor (11) in real time and compares the operating current with the first current threshold A3; If the operating current is not greater than the first current threshold A3 and the duration reaches the preset first set time t1, then the controller (12) controls the brushless motor (11) to switch from the first speed V1 to the second speed V2. If the operating current is greater than the first current threshold A3, the controller (12) controls the brushless motor (11) to maintain the first speed V1.

7. The control method for intelligent high-pressure and high-flow cleaning equipment according to claim 5, characterized in that, The pressure and flow control method under the high-pressure, high-flow operating mode includes: When the cleaning equipment (1) is in the high pressure and high flow rate setting and the high pressure and high flow rate nozzle (202) is used, the controller (12) controls the brushless motor (11) to run at the second speed V2; The controller (12) detects the operating current of the brushless motor (11) in real time and compares the operating current with the second current threshold A4; If the operating current is not less than the first current threshold A4 and the duration reaches the preset second set time t2, then the controller (12) controls the brushless motor (11) to run from the second speed V2 to the first speed V1; If the operating current is less than the second current threshold A4, the controller (12) controls the brushless motor (11) to maintain the second speed V2.

8. The control method for intelligent high-pressure and high-flow cleaning equipment according to claim 5, characterized in that, The pressure and flow control method with multiple operating modes includes: When the cleaning equipment (1) is in the ultra-high pressure setting and the ultra-high pressure nozzle (201) is used: The controller (12) controls the brushless motor (11) to start at a first speed V1, and detects the actual operating current of the brushless motor (11) in real time, and compares the actual operating current with the first current threshold A3. If the actual operating current is not greater than the first current threshold A3 and the duration reaches the first set time t1, then control the brushless motor (11) to switch from the first speed V1 to the second speed V2. If the actual operating current is greater than the first current threshold A3, then the first speed V1 is maintained. When the cleaning equipment (1) is in the high pressure and high flow rate setting and the high pressure and high flow rate nozzle (202) is used: The controller (12) controls the brushless motor (11) to start at the second speed V2, and detects the actual operating current of the brushless motor (11) in real time, and compares the actual operating current with the second current threshold A4. If the actual operating current is not less than the second current threshold A4 and the duration reaches the second set time t2, then control the brushless motor (11) to run from the second speed V2 to the first speed V1; If the actual operating current is less than the second current threshold A4, then the second speed V2 is maintained.

9. The control method for intelligent high-pressure and high-flow cleaning equipment according to claim 1, characterized in that, The working pressure range of the ultra-high pressure nozzle (201) is 11~15 MPa; The working pressure range of the high-pressure, high-flow nozzle (202) is 5.0~8.0MPa.

10. The control method for intelligent high-pressure and high-flow cleaning equipment according to claim 4, characterized in that, The cleaning equipment (1) is divided into several gears according to the output power of the motor, wherein the pressure flow control method is located at the maximum power gear among all gears.

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