Constant-air-pressure high-pressure blower

Abstract

The utility model relates to a constant wind pressure high pressure blower which comprises a driving motor, an impeller and a volute, the driving motor is a brushless motor, the brushless motor is connected with a controller through a power output module, the brushless motor is controlled by the controller, an air outlet is connected with an air outlet pipe, the air outlet pipe is connected with an electronic barometer, and the electronic barometer is connected with a fan. The electronic barometer is electrically connected with the controller and sends a detection result to the controller. The electronic barometer is arranged on the air outlet pipe, and the brushless motor is adopted as the driving motor to drive the impeller, so that the output air pressure can be detected through the controller, the rotating speed of the driving motor is actively adjusted according to the detection result, and the output air pressure is kept constant. Therefore, the technical problem that a traditional air blower control system cannot keep the output air pressure constant when the environment air pressure changes is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of blower control, and in particular relates to a constant wind pressure high-pressure blower. Background Art

[0002] High-pressure blowers are often used in the material conveying industry, using strong wind pressure and high wind speed to transport materials through pipelines. At the same time, high-pressure blowers are also used in the textile industry to transport yarn or fiber, such as vortex conveyors in vortex spinning.

[0003] Since materials need to be transported, the wind pressure output by the high-pressure blower needs to meet the requirements, and the wind pressure needs to be constant to ensure the stability of material transportation. The conventional way to control the constant wind pressure is to control the impeller speed of the high-pressure blower, that is, to control the speed of the drive motor. This method seems reasonable, but it does not take into account the changes in ambient air pressure. When the ambient air pressure is low, the wind pressure output at the same impeller speed will be too low. When the ambient air pressure is high, the wind pressure output at the same impeller speed will be too high. Therefore, it is necessary to provide a control system to control the wind pressure so that the wind pressure output by the blower remains constant. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a constant wind pressure control system for a high-pressure blower, so as to solve the technical problem that the traditional blower control system cannot maintain a constant output wind pressure when the ambient air pressure changes.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a constant wind pressure high-pressure blower, including a driving motor, an impeller and a volute, the front end of the volute is provided with an air inlet, the side wall is provided with an air outlet, the driving motor is fixedly connected to the rear outer wall of the volute, the driving shaft of the driving motor passes through the rear wall of the volute and is inserted into the volute, the impeller is arranged in the volute and fixedly sleeved on the driving shaft of the driving motor, the driving motor drives the impeller to rotate, the impeller guides the outside air into the volute from the air inlet, and is discharged from the air outlet after being compressed by the volute, the driving motor is a brushless motor, the brushless motor is connected to the controller through a power output module, the brushless motor is controlled by the controller, the air outlet is connected to an air outlet pipe, the air outlet pipe is connected to an electronic barometer, the electronic barometer is electrically connected to the controller, and sends the detection results to the controller.

[0006] As a preferred solution, the power output module is connected to the power supply module, the power supply module provides electrical energy to the power output module, and the controller is connected to the power supply module through the power supply module, which adjusts the voltage output by the power supply module and supplies it to the controller.

[0007] As a preferred solution, a fuse is connected in series between the power output module and the power supply module.

[0008] As a preferred solution, the driving motor is provided with a Hall sensor, which is connected to the controller. The Hall sensor detects the rotation data of the driving motor and sends it to the controller.

[0009] As a preferred solution, the controller is connected to a speed regulating switch, the speed regulating switch sends different electrical signals to the controller, and the controller adjusts the speed of the driving motor according to the electrical signals sent by the speed regulating switch.

[0010] As a preferred solution, a temperature sensor is provided in the drive motor, and the temperature sensor is electrically connected to the controller. The controller monitors the operating temperature of the drive motor through the temperature sensor.

[0011] The beneficial effect of this utility model is that by installing an electronic barometer on the air outlet pipe and using a brushless motor as the drive motor to drive the impeller, the controller can detect the output air pressure and actively adjust the drive motor speed based on the detection result to maintain a constant output air pressure. This solves the technical problem of traditional blower control systems that cannot maintain a constant output air pressure when the ambient air pressure changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0013] Figure 1 This is a structural diagram of the constant wind pressure high pressure blower of the utility model;

[0014] Figure 2 This is the electrical control principle diagram of the constant air pressure high pressure blower of the utility model;

[0015] Figure 1 and Figure 2 In: 1. Drive motor; 2. Impeller; 3. Volute; 4. Air inlet; 5. Air outlet; 6. Power output module; 7. Controller; 8. Air outlet duct; 9. Electronic barometer; 10. Power module; 11. Power supply module; 12. Fuse; 13. Hall sensor; 14. Speed ​​control switch; 15. Temperature sensor. DETAILED DESCRIPTION

[0016] The specific implementation scheme of the present utility model is described in detail below with reference to the accompanying drawings.

[0017] like Figure 1 and Figure 2The constant wind pressure high-pressure blower shown includes a drive motor 1, an impeller 2 and a volute 3. The front end of the volute 3 is provided with an air inlet 4, and the side wall is provided with an air outlet 5. The drive motor 1 is fixedly connected to the outer wall of the rear side of the volute 3, and the drive shaft of the drive motor 1 passes through the rear wall of the volute 3 and is inserted into the volute 3. The impeller 2 is arranged in the volute 3 and is fixedly sleeved on the drive shaft of the drive motor 1. The drive motor 1 drives the impeller 2 to rotate, and the impeller 2 guides the outside air into the volute 3 from the air inlet 4. After being compressed by the volute 3, a high-pressure airflow is formed and discharged from the air outlet 5. In this embodiment, the drive motor 1 is a brushless motor. The drive motor 1 is connected to the controller 7 through a power output module 6. The drive motor 1 is controlled by the controller 7. The air outlet 5 is connected to an air outlet pipe 8, and the air outlet pipe 8 is connected to an electronic barometer 9. The electronic barometer 9 is electrically connected to the controller 7 to send the detected actual wind pressure data to the controller 7. After receiving the wind pressure data from the electronic barometer 9, the controller 7 compares it with the preset design wind pressure value. If the actual wind pressure exceeds the design wind pressure, the controller 7 controls the drive motor 1 to reduce its speed. Conversely, if the design wind pressure is less than the design wind pressure, the controller 7 controls the drive motor 1 to increase its speed. This ensures that the actual wind pressure always approaches the design wind pressure until it matches the design wind pressure, thus maintaining a constant wind pressure.

[0018] The power output module 6 described in this embodiment is connected to the power supply module 10, which provides electrical energy to the power output module 6. The power output module 6 preferably utilizes a six-arm full-bridge drive circuit. The MOS transistors of the power output module 6 are connected to the controller 7. The controller 7 adjusts the speed of the drive motor 1 by adjusting the PWM duty cycle of each MOS transistor. Therefore, its speed regulation is similar to stepless speed regulation, capable of finely adjusting the speed of the drive motor 1, thereby achieving fine-tuning of the wind pressure, improving the wind pressure regulation accuracy, and maintaining the actual wind pressure output by the blower constant. The power supply module 10 is a power management chip capable of high-low voltage conversion and AC-DC conversion.

[0019] In this embodiment, the controller 7 is connected to the power module 10 via the power supply module 11 , and the power supply module 11 adjusts the voltage output by the power module 10 and supplies the voltage to the controller 7 .

[0020] The power supply module 11 in this embodiment can be another power management chip, or a voltage divider circuit and a filter circuit. The power supply module 11 provides a suitable and stable voltage to the controller 7 according to the needs of the controller 7.

[0021] In order to prevent the driving motor 1 from being burned out due to an excessive operating current, a fuse 12 is connected in series between the power output module 6 and the power supply module 10 in this embodiment.

[0022] In this embodiment, a Hall sensor 13 is preferably provided in the drive motor 1 . The Hall sensor 13 is connected to the controller 7 . The Hall sensor 13 detects the rotation data of the drive motor 1 and sends the data to the controller 7 .

[0023] The controller 7 described in this embodiment is connected to a speed regulating switch 14 . The speed regulating switch 14 sends different electrical signals to the controller 7 . The controller 7 adjusts the speed of the driving motor 1 according to the electrical signals sent by the speed regulating switch 14 .

[0024] When the user needs to manually adjust the wind pressure, the speed of the drive motor 1 can be manually intervened through the speed regulating switch 14 to cope with various special working conditions.

[0025] In this embodiment, a temperature sensor 15 is further provided in the drive motor 1. The temperature sensor 15 is electrically connected to the controller 7. The controller 7 monitors the operating temperature of the drive motor 1 through the temperature sensor 15. When the operating temperature of the drive motor 1 is too high, the controller 7 reduces the speed of the drive motor 1 or stops the drive motor 1 to protect the safety of the drive motor 1.

[0026] The working process of this utility model is: Figure 1 As shown, when the user uses the constant wind pressure high-pressure blower described in the present invention, the controller 7 will first control the drive motor 1 to rotate at a preset speed. The drive motor 1 drives the impeller 2 to rotate, thereby generating a high-pressure airflow. The high-pressure airflow enters the air outlet 8 from the air outlet 5. The electronic barometer 9 on the air outlet 8 can detect the wind pressure in the air outlet 8 and then feed it back to the controller 7. When the wind pressure detected by the electronic barometer 9 is lower than the preset wind pressure, the controller 7 controls the drive motor 1 to increase the speed until the wind pressure detected by the electronic barometer 9 is consistent with the preset wind pressure. When the wind pressure detected by the electronic barometer 9 is higher than the preset wind pressure, the controller 7 controls the drive motor 1 to reduce the speed until the wind pressure detected by the electronic barometer 9 is consistent with the preset wind pressure.

[0027] The present invention also utilizes the temperature sensor 15 to monitor the operating temperature of the drive motor 1 in real time to ensure that the operating temperature of the drive motor 1 is within a normal range.

[0028] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some embodiments of its application, and are not intended to limit the present invention. It should be noted that a person skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A constant wind pressure high-pressure blower includes a drive motor, an impeller, and a volute. The front end of the volute is provided with an air inlet, and the side wall is provided with an air outlet. The drive motor is fixedly connected to the rear outer wall of the volute, and the drive shaft of the drive motor passes through the rear wall of the volute and is inserted into the volute. The impeller is arranged in the volute and fixedly sleeved on the drive shaft of the drive motor. The drive motor drives the impeller to rotate, and the impeller guides the outside air into the volute from the air inlet, and the air is discharged from the air outlet after being compressed by the volute. It is characterized in that The driving motor is a brushless motor, which is connected to the controller through a power output module. The brushless motor is controlled by the controller. The air outlet is connected to an air outlet pipe, and the air outlet pipe is connected to an electronic barometer. The electronic barometer is electrically connected to the controller and sends detection results to the controller.

2. The constant wind pressure high pressure blower according to claim 1, characterized in that: The power output module is connected to the power supply module, and the power supply module provides electrical energy to the power output module. The controller is connected to the power supply module through the power supply module, and the power supply module adjusts the voltage output by the power supply module and supplies it to the controller.

3. The constant wind pressure high pressure blower according to claim 2, characterized in that: A fuse is connected in series between the power output module and the power supply module.

4. The constant wind pressure high pressure blower according to claim 1, characterized in that: The driving motor is provided with a Hall sensor, which is connected to the controller. The Hall sensor detects the rotation data of the driving motor and sends it to the controller.

5. The constant wind pressure high pressure blower according to claim 1, characterized in that: The controller is connected to a speed regulating switch, and the speed regulating switch sends different electrical signals to the controller. The controller adjusts the speed of the driving motor according to the electrical signals sent by the speed regulating switch.

6. The constant wind pressure high pressure blower according to claim 1, characterized in that: A temperature sensor is provided in the drive motor and is electrically connected to the controller. The controller monitors the operating temperature of the drive motor through the temperature sensor.

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