Automatic frequency modulation exhaust fan unit

Abstract

The application relates to an automatic frequency-regulating exhaust fan unit which comprises a box, a fan, a sensing system and a frequency-regulating system. The box is of a rectangular structure, an air inlet is formed in one side of the box, and an air outlet is formed in the other side of the box. The fan is arranged in the box, and the air outlet of the fan is connected with the air outlet of the box. The frequency-regulating system is arranged on the box and electrically connected with the fan to control the rotating speed of the fan. The sensing system is arranged outside the box and in an external pipeline, and is electrically connected with the frequency-regulating system. The sensing system transmits the sensed data to the frequency-regulating system. The application solves the problem that the existing exhaust fan needs to be manually adjusted by a control panel, which is inconvenient for experimenters.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to an automatic frequency-adjustable exhaust fan unit. Background Technology

[0002] In some laboratories, there are certain requirements for indoor ventilation, so exhaust fans are needed to ensure indoor air circulation. However, existing exhaust fans require manual adjustment of the fan speed via a control panel, which can be inconvenient for laboratory personnel. Utility Model Content

[0003] In view of this, this application proposes an automatic frequency-adjustable exhaust fan unit, including a housing, a fan, a sensing system, and a frequency conversion system; the housing is a rectangular structure, with an air inlet on one side and an air outlet on the other side; the fan is disposed inside the housing, and the air outlet of the fan is connected to the air outlet of the housing; the frequency conversion system is disposed on the housing, and is electrically connected to the fan to control the fan speed; the sensing system is disposed outside the housing, located inside an external duct, and is electrically connected to the frequency conversion system, and transmits the sensed data to the frequency conversion system.

[0004] In one possible implementation, the frequency conversion system includes a control cabinet and a frequency converter; the control cabinet is a hollow rectangular structure and is mounted on the enclosure; the frequency converter is located inside the control cabinet and is also electrically connected to the fan.

[0005] In one possible implementation, the sensing system includes an airflow sensor and a pressure sensor; the airflow sensor is disposed inside an external pipe, and there is a preset distance between the airflow sensor and the air inlet of the housing; the pressure sensor is also disposed inside an external pipe, and the pressure sensor is disposed between the airflow sensor and the air inlet of the housing.

[0006] In one possible implementation, the frequency conversion system further includes a receiving module, a control module, and a touch screen; the receiving module and the control module are both located inside the control box, and are electrically connected to each other; the touch screen is located on the control cabinet, and is electrically connected to both the receiving module and the control module.

[0007] In one possible implementation, both the airflow sensor and the pressure sensor are electrically connected to the receiving module.

[0008] In one possible implementation, the frequency converter is electrically connected to the control module.

[0009] In one possible implementation, an electrically operated switch valve is also included, which is disposed at the air outlet of the housing and is the same size as the air outlet of the housing.

[0010] In one possible implementation, the electrically operated switching valve is electrically connected to the control module.

[0011] In one possible implementation, a filter is also included, which is disposed inside the housing and at the air inlet of the housing.

[0012] In one possible implementation, a motor is also included, and the sensing system, the frequency conversion system, and the fan are all electrically connected to the motor.

[0013] The beneficial effects of this utility model are as follows: The automatic frequency-adjustable exhaust fan unit includes a housing, a fan, a sensing system, a motor, and a frequency conversion system. The housing has a rectangular structure with an air inlet on one side and an air outlet on the other side, allowing for the housing to accommodate other components. The fan is located inside the housing, and its outlet is connected to the housing's outlet, facilitating the exhaust of indoor air. The sensing system is located outside the housing, within an external duct, to monitor airflow and pressure. The motor has a circular structure and is located inside the housing, connected to an external power source and electrically connected to the fan. The frequency conversion system is mounted on the housing and electrically connected to the motor, controlling its speed. This configuration allows for speed control of the motor via the frequency conversion system, which in turn controls the fan, further controlling the exhaust rate and achieving automatic adjustment of the exhaust speed to meet actual needs. Attached Figure Description

[0014] Figure 1 The specific structural diagram of this application is shown. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0017] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model or simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," "linking," and "hinged" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] like Figure 1 As shown, the automatic frequency-adjustable exhaust fan unit includes a housing 100, a fan 200, a sensing system 300, a motor 400, and a frequency conversion system 500. The housing 100 has a rectangular structure, with an air inlet on one side and an air outlet on the other side. The fan 200 is located inside the housing 100, and its air outlet is connected to the air outlet of the housing 100. The sensing system 300 is located outside the housing 100 and inside an external duct. The frequency conversion system 300 is mounted on the housing 100 and is electrically connected to the fan 200 to control its speed. The motor 400 has a circular structure and is located inside the housing 100. The motor 400 is connected to an external power source, and the sensing system 300, frequency conversion system 500, and fan 200 are all electrically connected to the motor 400.

[0021] Specifically, such as Figure 1The automatic frequency-controlled exhaust fan unit mainly includes a housing 100, a fan 200, a sensing system 300, a motor 400, and a frequency conversion system 500. To house the fan 200, sensing system 300, motor 400, and frequency conversion system 500 together, the housing 100 needs to be hollow to accommodate other components while still meeting exhaust requirements. Therefore, an air inlet is provided on one side of the housing 100, and an air outlet is provided on the other side. For exhaust purposes, a motor 400 and a fan 200 are installed inside the housing 100. The fan 200 and motor 400 are electrically connected, and the motor 400 controls the operation of the fan 200. It should be noted that to achieve exhaust, the air outlet of the fan 200 is connected to the air outlet on the other side of the housing 100. The sensor system 300 is set up to obtain airflow and pressure data. To receive this data, a frequency converter system 500 is also included. The sensor system 300 transmits the data to the frequency converter system 500, and the motor 400 controls the exhaust rate of the fan 200. This enables automatic adjustment of the exhaust volume in real time based on actual conditions.

[0022] In one possible implementation, the frequency converter system 500 includes a control cabinet 510 and a frequency converter; the control cabinet 510 is a hollow rectangular structure and is mounted on a housing 100; the frequency converter is located inside the control cabinet 510 and is electrically connected to the fan 200. The frequency converter system 500 also includes a receiving module, a control module, and a touch screen 520; both the receiving module and the control module are located inside the control cabinet and are electrically connected; the touch screen 520 is mounted on the control cabinet 510, and both the receiving module and the control module are electrically connected to the touch screen.

[0023] In one possible implementation, the sensing system 300 includes an airflow sensor 310 and a pressure sensor 320; the airflow sensor 310 is disposed inside an external pipe and there is a preset distance between the airflow sensor 310 and the air inlet of the housing 100; the pressure sensor 320 is also disposed inside an external pipe and is disposed between the airflow sensor 310 and the air inlet of the housing 100.

[0024] Specifically, the variable frequency system 500 includes a control cabinet 510, a frequency converter, a receiving module, a control module, and a touch screen 520. The control cabinet 510 houses the frequency converter, receiving module, control module, and touch screen 520; therefore, the frequency converter, receiving module, and control module are all housed inside the control cabinet 510. The frequency converter is electrically connected to the fan 200 to control its frequency conversion. The sensing system 300 includes an airflow sensor 310 and a pressure sensor 320. The airflow sensor 310 detects wind speed, and the pressure sensor 320 detects pressure. The detected wind speed and pressure data are transmitted to the variable frequency system 500. Therefore, the variable frequency system 500 also includes a receiving module and a control module. The receiving module receives the wind speed and pressure data; therefore, both the airflow sensor and pressure sensor are electrically connected to the receiving module. After receiving the data, the receiving module feeds it back to the control module, which controls the frequency converter; therefore, the frequency converter is electrically connected to the control module.

[0025] In one possible implementation, an electrically operated switch valve 600 is also included. The electrically operated switch valve 600 is located at the air outlet of the housing 100, and its size is the same as that of the air outlet of the housing 100. The electrically operated switch valve 600 is electrically connected to the control module.

[0026] Specifically, such as Figure 1 As shown, in order to prevent backflow of exhaust air when the fan 200 is turned off, an electric switch valve 600 is provided. The electric switch valve 600 is located at the air outlet of the housing 100. When the fan 200 is turned off, the electric switch valve 600 is also turned off. In order to control the electric switch valve 600, the electric switch valve 600 is electrically connected to the control module.

[0027] In one possible implementation, a filter 700 is also included, which is disposed inside the housing 100 and at the air inlet of the housing 100. The filter 700 is provided because sometimes the air inside the experiment is not suitable for direct exhaust.

[0028] In one possible implementation, the diameter of the air inlet of the enclosure 100 is larger than the diameter of the air outlet of the enclosure 100. Enclosures 100 of different diameters can be selected according to actual needs.

[0029] Through the above settings, this application utilizes the sensor system 300 to collect wind speed and pressure data and transmits them to the frequency conversion system 500. The frequency conversion system 500 controls the exhaust rate of the fan 200 to automatically adjust the exhaust volume, thus solving the technical problem that existing exhaust fans require manual adjustment of the exhaust fan speed via a control panel, which would cause inconvenience to experimental personnel.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic frequency-adjustable exhaust fan unit, characterized in that, Includes enclosure, fan, sensing system and frequency converter system; The box has a rectangular structure, with an air inlet on one side and an air outlet on the other side. The fan is installed inside the housing, and the air outlet of the fan is connected to the air outlet of the housing. The frequency conversion system is installed on the housing and is electrically connected to the fan to control the fan speed. The sensing system is located outside the enclosure, inside an external pipe. The sensing system is electrically connected to the frequency converter system, and the sensing system transmits the sensed data to the frequency converter system.

2. The automatic frequency-adjustable exhaust fan unit according to claim 1, characterized in that, The frequency conversion system includes a control cabinet and a frequency converter; The control cabinet is a hollow rectangular structure and is mounted on the enclosure. The frequency converter is installed inside the control cabinet and is also electrically connected to the fan.

3. The automatic frequency-adjustable exhaust fan unit according to claim 2, characterized in that, The sensing system includes an airflow sensor and a pressure sensor; The air volume sensor is installed inside the external pipe, and there is a preset distance between the air volume sensor and the air inlet of the housing; The pressure sensor is also installed inside the external pipe, and the pressure sensor is located between the air volume sensor and the air inlet of the housing. Furthermore, both the air volume sensor and the pressure sensor are electrically connected to the frequency converter.

4. The automatic frequency-adjustable exhaust fan unit according to claim 3, characterized in that, The frequency conversion system also includes a receiving module, a control module, and a touch screen; Both the receiving module and the control module are located inside the control cabinet, and there is an electrical connection between the receiving module and the control module. The touch screen is mounted on the control cabinet, and both the receiving module and the control module are electrically connected to the touch screen.

5. The automatic frequency-adjustable exhaust fan unit according to claim 4, characterized in that, Both the air volume sensor and the pressure sensor are electrically connected to the receiving module.

6. The automatic frequency-adjustable exhaust fan unit according to claim 4, characterized in that, The frequency converter is electrically connected to the control module.

7. The automatic frequency-adjustable exhaust fan unit according to claim 4, characterized in that, It also includes an electric switch valve, which is located at the air outlet of the housing, and the size of the electric switch valve is the same as the size of the air outlet of the housing.

8. The automatic frequency-controlled exhaust fan unit according to claim 7, characterized in that, The electric switching valve is electrically connected to the control module.

9. The automatic frequency-controlled exhaust fan unit according to claim 1, characterized in that, It also includes a filter, which is disposed inside the housing and at the air inlet of the housing.

10. The automatic frequency-controlled exhaust fan unit according to any one of claims 1-9, characterized in that, It also includes a motor, and the sensing system, the frequency conversion system and the fan are all electrically connected to the motor.

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