A forward-reverse fan

Abstract

The utility model discloses a kind of forward and reverse fans, including frame, fan mechanism and control unit, fan mechanism is installed in frame, control unit and fan mechanism electrically connected, for the start and shutdown of control fan mechanism;Fan mechanism includes driving device and fan structure, driving device is used to provide power for fan structure;Driving device and control unit electrically connected, control unit controls the start and shutdown of driving device;Fan structure includes driven structure and fan blade structure, driven structure and driving device can be transmission connection, fan blade structure and driven structure can be transmission connection;Wherein, driving device is set to structure construction that can be forward rotation, also can reverse rotation.The utility model realizes the function of fan blade's forward and reverse, fan can change air supply direction flexibly, effectively expand the space range of air supply coverage, solve the problem that traditional single direction air supply fan is not uniform or insufficient in extensive area air supply, improve ventilation effect.

Description

Technical Field

[0001] This utility model relates to the field of air supply device technology, and more specifically, to a forward and reverse rotating fan. Background Technology

[0002] In the field of ventilation equipment, fans, as an important airflow control device, are widely used in various scenarios such as building ventilation, industrial cooling, and environmental control. Traditional fans are usually designed with a unidirectional airflow mode, meaning they can only achieve one function: forward or reverse rotation airflow. This design limits the application flexibility and airflow efficiency of fans to some extent. For example, in situations requiring wide coverage of the airflow area, unidirectional airflow is often insufficient, leading to insufficient or uneven airflow in some areas and affecting the overall ventilation effect. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a forward and reverse rotating fan, which aims to achieve efficient and stable forward and reverse rotation of the fan blades and expand the air delivery coverage area by optimizing the design of the fan mechanism and the configuration of the control unit.

[0004] To achieve the above objectives, the specific technical solution adopted by this utility model is as follows:

[0005] The reversible fan of this utility model includes a frame, a fan mechanism, and a control unit. The fan mechanism is mounted on the frame, and the control unit is electrically connected to the fan mechanism for controlling the start and stop of the fan mechanism. The fan mechanism includes a drive device and a fan-changing structure. The drive device provides power to the fan-changing structure. The drive device is electrically connected to the control unit, and the control unit controls the start and stop of the drive device.

[0006] The fan-changing structure includes a driven structure and a fan blade structure. The driven structure is tractably connected to the driving device, and the fan blade structure is tractably connected to the driven structure.

[0007] The drive device is configured to rotate in both the forward and reverse directions.

[0008] Preferably, the fan blade structure and the driven structure are connected by a transmission mechanism.

[0009] Preferably, the fan blade structure includes multiple fan blades and multiple lead screws corresponding to the multiple fan blades. Each fan blade is installed on one end of a lead screw, and the other end of the lead screw is provided with a first bevel gear. The driven structure is sleeved with a second bevel gear. The first bevel gear and the second bevel gear are meshed and connected. Multiple first bevel gears and second bevel gears together constitute a transmission mechanism.

[0010] Preferably, the driven structure is configured as a stepper motor.

[0011] Preferably, the drive device is configured as an asynchronous motor.

[0012] Preferably, the driving device is provided with a first pulley, and the driven structure is provided with a second pulley, and the first pulley and the second pulley are connected by a belt for transmission.

[0013] Preferably, a rain cover is provided on the frame corresponding to the fan mechanism.

[0014] Preferably, the frame is further provided with louvers corresponding to the fan mechanism.

[0015] Preferably, one end of the driven structure is provided with a conductive ring, which is electrically connected to the control unit.

[0016] Preferably, the control unit includes a processing module, a receiving module, and a remote control module, wherein the processing module is electrically connected to the receiving module, and the receiving module is electrically connected to the remote control module.

[0017] Preferably, the processing module includes a programmable controller and an encoder, wherein the encoder is electrically connected to the conductive ring, and the programmable controller is electrically connected to the encoder.

[0018] Preferably, the receiving module includes an AC contactor and a remote control receiver, the remote control receiver being electrically connected to the AC contactor, and the AC contactor being electrically connected to the processing module.

[0019] Preferably, the frame is provided with a fan operation indicator light, which includes a forward rotation indicator light and a reverse rotation indicator light.

[0020] Compared with the prior art, this utility model has the following advantages:

[0021] This invention enables the fan blades to rotate in both directions, allowing the fan to flexibly change the airflow direction and effectively expand the airflow coverage area. This solves the problem of uneven or insufficient airflow in a wide area by traditional single-direction airflow fans, thus improving the ventilation effect.

[0022] Based on this, a transmission mechanism such as a bevel gear set (and other conventional optional transmission methods) is used to realize the power transmission and direction change between the fan blades and the drive device. When designed properly, it can ensure stable and reliable transmission, reduce power loss, improve transmission efficiency, and ensure smooth forward and reverse operation of the fan blades.

[0023] In addition, the installation of a rain cover and louvers on the frame effectively prevents rainwater and debris from entering the fan, protecting the internal structure from damage, extending the fan's service life, and improving the fan's environmental adaptability.

[0024] Furthermore, the control unit integrates a processing module, a receiving module, and a remote control module, achieving a seamless combination of local and remote control. Through components such as a PLC programmable controller and stepper motor encoder, it can precisely control the fan's operating status, enabling intelligent scheduling. The remote control module includes components such as a time relay and a remote control transmitter, supporting remote control via smart devices (such as mobile phones), greatly facilitating user operation, reducing labor costs, and enhancing the user experience.

[0025] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the fan structure in a preferred embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of the internal structure of the fan in a preferred embodiment of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 10 frames,

[0030] 20 fan mechanism,

[0031] 21 Drive unit, 211 First pulley,

[0032] 22 fan replacement structure,

[0033] 221 Driven structure, 2211 Second bevel gear, 2212 Second pulley, 2213 Conductive ring,

[0034] 222 fan blade structure, 2221 fan blade, 2222 lead screw, 2223 first bevel gear,

[0035] 30 Rain Cover

[0036] 40 Venetian mesh. Detailed Implementation

[0037] The present invention will be further explained and described below through specific embodiments. It should be understood that the purpose of the following embodiments is to make the technical solution of the present invention clearer and easier to understand, and does not limit the scope of protection of the claims.

[0038] The present invention will be further described below through specific embodiments.

[0039] Example

[0040] This embodiment provides a fan that can rotate in both directions, such as... Figure 1-2As shown, it includes a frame 10, a fan mechanism 20, and a control unit. The fan mechanism 20 is mounted on the frame 10, and the control unit is electrically connected to the fan mechanism 20 to control the start and stop of the fan mechanism 20.

[0041] Specifically, the fan mechanism 20 includes a drive device 21 and a fan-changing structure 22. The fan-changing structure 22 is driveably connected to the drive device 21. The drive device 21 is used to provide power to the fan-changing structure 22. The drive device 21 is electrically connected to a control unit. The control unit controls the start and stop of the drive device 21, thereby controlling the operating state of the fan mechanism 20.

[0042] More specifically, the fan-changing structure 22 includes a driven structure 221 and a fan blade structure 222. The driven structure 221 is transmissively connected to the drive device 21. The fan blade structure 222 and the driven structure 221 are transmissively connected through a bevel gear set. The fan blade structure 222 includes multiple fan blades 2221 and multiple lead screws 2222 corresponding to the multiple fan blades 2221. Each fan blade 2221 is correspondingly installed on one end of a lead screw 2222. The other end of the lead screw 2222 is provided with a first bevel gear 2223. The driven structure 221 is sleeved with a second bevel gear 2211. The multiple first bevel gears 2223 and the second bevel gears 2211 together constitute a bevel gear set. The first bevel gears 2223 and the second bevel gears 2211 are meshed together.

[0043] Specifically, in order to achieve forward and reverse rotation of the fan blades 2221, the driven structure 221 is configured to be able to rotate in both directions, for example, as a stepper motor; the forward and reverse rotation of the stepper motor will change the air delivery direction of the fan blade structure 222, thereby expanding the air delivery coverage space.

[0044] Specifically, in order to achieve forward and reverse rotation of the fan blades 2221, in addition to using bevel gear sets as a transmission method, other conventional transmission mechanisms can also be used.

[0045] Specifically, the drive device 21 is provided with a first pulley 211, and the stepper motor is provided with a second pulley 2212. The first pulley 211 and the second pulley 2212 are connected by a belt.

[0046] Specifically, the drive device 21 is configured as an asynchronous motor.

[0047] Specifically, a rain cover 30 is provided on the frame 10 corresponding to the fan mechanism 20.

[0048] Specifically, the frame 10 is also provided with a louvered screen 40 corresponding to the fan mechanism 20 to prevent debris from entering the fan.

[0049] Specifically, one end of the stepper motor is provided with a conductive ring 2213. The front end of the conductive ring 2213 is connected to the stepper motor wire and rotates with the fan blade structure 222. The tail end is fixed. The conductive ring 2213 is electrically connected to the control unit through the wire.

[0050] Specifically, the control unit includes a processing module, a receiving module, and a remote control module; the processing module is electrically connected to the receiving module, and the receiving module is electrically connected to the remote control module.

[0051] More specifically, the processing module includes a PLC programmable controller and an encoder. In this embodiment, the encoder is configured as a stepper motor encoder, which is electrically connected to the conductive ring 2213, and the PLC programmable controller is electrically connected to the stepper motor encoder.

[0052] More specifically, the receiving module includes an AC contactor and a remote control receiver, the remote control receiver being electrically connected to the AC contactor, and the AC contactor being electrically connected to the processing module.

[0053] More specifically, the remote control module includes a time relay, a remote control transmitter, a remote control / mobile phone switch controller, a switching power supply, and an air switch; it can be used for remote control of remote control or smart devices (such as mobile phones).

[0054] Specifically, the frame 10 is provided with fan operation indicator lights, including a forward rotation indicator light and a reverse rotation indicator light.

[0055] This utility model has been described through embodiments, but it does not constitute a limitation on this utility model. Other variations of the disclosed embodiments, which are readily apparent to those skilled in the art, should fall within the scope of the claims of this utility model, with reference to the description of this utility model.

Claims

1. A reversible fan, characterized in that: The device includes a frame (10), a fan mechanism (20), and a control unit. The fan mechanism (20) is mounted on the frame (10), and the control unit is electrically connected to the fan mechanism (20) to control the start and stop of the fan mechanism (20). The fan mechanism (20) includes a drive device (21) and a fan-changing structure (22). The drive device (21) provides power to the fan-changing structure (22). The drive device (21) is electrically connected to the control unit, and the control unit controls the start and stop of the drive device (21). The fan-changing structure (22) includes a driven structure (221) and a fan blade structure (222). The driven structure (221) is transmissively connected to the drive device (21), and the fan blade structure (222) is transmissively connected to the driven structure (221). The drive device (21) is configured to rotate in both the forward and reverse directions.

2. The reversible fan according to claim 1, characterized in that: The fan blade structure (222) and the driven structure (221) are connected by a transmission mechanism.

3. The reversible fan according to claim 2, characterized in that: The fan blade structure (222) includes multiple fan blades (2221) and multiple lead screws (2222) corresponding to the multiple fan blades (2221). Each fan blade (2221) is installed on one end of a lead screw (2222). The other end of the lead screw (2222) is provided with a first bevel gear (2223). The driven structure (221) is sleeved with a second bevel gear (2211). The first bevel gear (2223) and the second bevel gear (2211) are meshed and connected. The multiple first bevel gears (2223) and the second bevel gears (2211) together constitute a transmission mechanism.

4. The reversible fan according to claim 1, characterized in that: The driven structure (221) is configured as a stepper motor.

5. The reversible fan according to claim 1, characterized in that: The drive device (21) is configured as an asynchronous motor.

6. The reversible fan according to claim 1, characterized in that: The drive device (21) is provided with a first pulley (211), and the driven structure (221) is provided with a second pulley (2212). The first pulley (211) and the second pulley (2212) are connected by a belt.

7. The reversible fan according to claim 1, characterized in that: The frame (10) is provided with a rain cover (30).

8. The reversible fan according to claim 1, characterized in that: The frame (10) is provided with a louvered mesh (40).

9. The reversible fan according to claim 1, characterized in that: One end of the driven structure (221) is provided with a conductive ring (2213), which is electrically connected to the control unit.

10. The reversible fan according to claim 1, characterized in that: The control unit includes a processing module, a receiving module, and a remote control module. The processing module is electrically connected to the receiving module, and the receiving module is electrically connected to the remote control module.

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