CN218817089U - An automatic axial flow fan - Google Patents

Abstract

The utility model relates to the technical field of axial flow fans, in particular to an automatic axial flow fan. It mainly aims at the problem that the entire axial flow fan will vibrate when adding the dust-proof net cleaning rod, and proposes the following technical solution: including the axial-flow fan body and the dust-proof net, and the dust-proof net is connected to the axial-flow fan body At the front end, a servo motor and fan blades are installed in the axial flow fan body, a servo controller is installed on the servo motor, the fan blades are fixedly connected to the output end of the servo motor, and a cleaning mechanism is set between the output end of the servo motor and the dust-proof net. The utility model utilizes the transmission of the driving gear and the transmission gear of the cleaning mechanism to drive the inner bushing to rotate slowly while the fan blades rotate at high speed, so that the dust accumulated on the dust-proof net can be cleaned to avoid the blockage of the dust-proof net. , to ensure the stable operation of the entire axial flow fan.

Description

An automatic axial flow fan

technical field

The utility model relates to the technical field of axial flow fans, in particular to an automatic axial flow fan.

Background technique

Axial flow fan is the most common type of fan. Its main feature is the airflow in the same direction as the drive shaft of the fan blades, such as electric fans, air conditioner fans, etc. Among them, the automatic axial flow fan directly uses the servo controller to control the axial flow. The speed and rotation of the output end of the servo motor in the ventilator are reversed, so as to realize the adjustment of the wind force and wind direction.

After investigation, the publication number is "CN214617118U" "an axial flow fan with dustproof function", which mainly drives the front side cleaning part to rotate synchronously while the fan blades rotate, and finally realizes the cleaning of the front side dustproof net. Cleaning of surface dust, although this method can achieve the purpose of cleaning the dust-proof net, but the cleaning part is only equipped with a cleaning rod, and there is no deceleration structure to assist in the process of synchronous rotation of the cleaning part and the fan blades, resulting in the cleaning part During high-speed rotation, due to centrifugal force, the rotation will be unstable (like a fan with only a single blade), which will eventually cause the axial flow fan to vibrate and the setting will not work.

Utility model content

The purpose of this utility model is to propose an automatic axial flow fan aiming at the problems existing in the background technology.

The technical scheme of the utility model: an automatic axial flow fan, including the axial flow fan body and the dustproof net, the dustproof net is clamped on the front end of the axial flow fan body, and the axial flow fan body is installed with A servo motor and fan blades, a servo controller is installed on the servo motor, the fan blades are fixedly connected to the output end of the servo motor, and a cleaning mechanism is arranged between the output end of the servo motor and the dust-proof net.

Preferably, the cleaning mechanism includes an inner bushing and a cleaning brush, the inner bushing is rotatably connected in the axial flow fan body and is located at the front end of the axial flow fan body, and the inner wall of the front end of the inner bushing is fixedly connected with a pair of linkage The linkage rod is fixedly connected with a cleaning brush on the side close to the dust-proof net. The cleaning brush is offset against the dust-proof net, and the centrifugal force generated by a pair of linkage rods can be offset by the simultaneous rotation of the pair of linkage rods, thereby ensuring the smoothness of the rotation. Stablize.

Preferably, a drive gear is installed on the front side of the output end of the servo motor, and an inner gear sleeve is fixedly connected to the inner side wall of the inner bush and corresponding to the drive gear, and a pair of transmission gears is arranged between the inner gear sleeve and the drive gear , the transmission gear meshes with both the drive gear and the inner gear sleeve.

Preferably, the diameter of the transmission gear is larger than that of the drive gear, and the transmission gear is evenly provided with perforations penetrating the transmission gear, and the perforations can reduce the resistance of the transmission gear to air flow.

Preferably, a pair of installation rods are fixedly connected to the inner wall of the axial flow fan body and corresponding to the transmission gear, and one end of the installation rods is connected to the transmission gear through a rotating shaft to ensure that the transmission gear can be connected to the inner gear sleeve and the drive gear. between stable rotations.

Preferably, the axial fan body is clamped with a guardrail, and the servo motor is fixed in the axial fan body through a mounting bracket, which can protect the rear side of the axial fan body.

Compared with the prior art, the utility model has the following beneficial technical effects:

The utility model utilizes the transmission of the driving gear and the transmission gear of the cleaning mechanism to drive the inner bushing to rotate slowly while the fan blades rotate at high speed, so that the dust accumulated on the dust-proof net can be cleaned to avoid the blockage of the dust-proof net. , to ensure the stable operation of the entire axial flow fan.

Description of drawings

Fig. 1 is the overall appearance structure schematic diagram of the present utility model;

Fig. 2 is a schematic diagram of a side cutaway structure of the utility model;

Fig. 3 is the schematic diagram of enlarged structure at A place in Fig. 2 of the present utility model;

Fig. 4 is a schematic diagram of the cut-away structure of the back side of the dust-proof net of the present invention.

Reference signs: 1. Axial flow fan body; 11. Servo motor; 12. Fan blade; 2. Guardrail; 3. Dust-proof net; 4. Cleaning mechanism; 41. Inner bushing; 42. Linkage rod; 43 , cleaning brush; 44, drive gear; 45, transmission gear; 46, internal gear sleeve; 47, installation rod.

Detailed ways

The technical scheme of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1-4, the utility model proposes an automatic axial flow fan, which includes an axial flow fan body 1 and a dustproof net 3, the dustproof net 3 is clamped on the front end of the axial flow fan body 1, and the shaft A servo motor 11 and fan blades 12 are installed in the circulation fan body 1, a servo controller is installed on the servo motor 11, the fan blades 12 are fixedly connected to the output end of the servo motor 11, and the output end of the servo motor 11 and the dust-proof net 3 are arranged There is a cleaning mechanism 4, the axial flow fan body 1 is clamped with a guardrail 2, and the servo motor 11 is fixed in the axial flow fan body 1 through a mounting bracket.

The cleaning mechanism 4 includes an inner bushing 41 and a cleaning brush 43. The inner bushing 41 is rotatably connected to the axial fan body 1 and is located at the front end of the axial fan body 1. The inner wall of the front end of the inner bushing 41 is fixedly connected to a pair of linkage rods 42. , the linkage rod 42 is fixedly connected with a cleaning brush 43 near the side of the dust-proof net 3, the cleaning brush 43 is offset against the dust-proof net 3, a drive gear 44 is installed on the front side of the output end of the servo motor 11, and the inner side wall of the inner bushing 41 is connected to the The corresponding position of the drive gear 44 is fixedly connected with an internal gear sleeve 46, and a pair of transmission gears 45 are arranged between the internal gear sleeve 46 and the drive gear 44. The transmission gear 45 is in mesh with the drive gear 44 and the internal gear sleeve 46. It is larger than the diameter of the driving gear 44, and the transmission gear 45 is uniformly provided with perforations through the transmission gear 45. A pair of installation rods 47 are fixedly connected to the inner wall of the axial flow fan body 1 and corresponding to the transmission gear 45, and the installation rods 47 are close to one end. The rotating shaft is connected to the transmission gear 45 in rotation. When the drive gear 44 rotates following the output end of the servo motor 11, the inner bushing 41 can be rotated by the transmission of the transmission gear 45 and the inner gear sleeve 46. The diameter is smaller than the outer diameter of the transmission gear 45, so when the inner bush 41 rotates with the drive gear 44, the rotation speed will be greatly reduced, and finally the linkage rod 42 will be driven to rotate slowly, so that the cleaning brush 43 can slide slowly on the surface of the dust-proof net 3 .

In this embodiment, the whole device is first connected to an external power supply, and then the servo controller is used to control the output end of the servo motor 11 to rotate in a specified direction and speed, and to drive the driving gear 44 to rotate. At this time, the transmission gear 45 and the internal gear The transmission of the sleeve 46 can make the inner bushing 41 rotate. Since the outer diameter of the driving gear 44 is smaller than the outer diameter of the driving gear 45, the inner bushing 41 will greatly reduce the rotation speed during the rotation of the driving gear 44, and finally Drive the linkage rod 42 to rotate slowly, so that the cleaning brush 43 can slide slowly on the surface of the dust-proof net 3, which not only realizes the cleaning of the dust accumulated on the surface of the dust-proof net 3, but also does not cause the axial flow fan to rotate due to the rotation of the linkage rod 42. The main body 1 shakes or fails to work directly.

The above-mentioned specific embodiments are only several preferred embodiments of the present utility model. Based on the technical solutions of the present utility model and the related inspirations of the above-mentioned embodiments, those skilled in the art can make various alternative improvements to the above-mentioned specific embodiments. and combinations.

Claims (6)

1. An automatic axial flow fan, including an axial flow fan body (1) and a dust-proof net (3), characterized in that: the dust-proof net (3) is clamped on the axial flow fan body (1) At the front end, the axial flow fan body (1) is equipped with a servo motor (11) and fan blades (12), the servo motor (11) is equipped with a servo controller, and the fan blades (12) are fixedly connected to The output end of the servo motor (11), and a cleaning mechanism (4) is arranged between the output end of the servo motor (11) and the dust-proof net (3). 2. An automatic axial flow fan according to claim 1, characterized in that, the cleaning mechanism (4) includes an inner bushing (41) and a cleaning brush (43), and the inner bushing (41) Rotationally connected in the axial flow fan body (1) and located at the front end of the axial flow fan body (1), the inner wall of the front end of the inner bushing (41) is fixedly connected with a pair of linkage rods (42), the linkage rods (42 ) is fixedly connected with a cleaning brush (43) near the side of the dust-proof net (3), and the cleaning brush (43) is offset against the dust-proof net (3). 3. An automatic axial flow fan according to claim 2, characterized in that a drive gear (44) is installed on the front side of the output end of the servo motor (11), and the inner side wall of the inner bush (41) is in contact with The corresponding position of the drive gear (44) is fixedly connected with an internal gear sleeve (46), and a pair of transmission gears (45) are arranged between the internal gear sleeve (46) and the drive gear (44), and the transmission gear (45) Mesh with drive gear (44) and internal gear sleeve (46). 4. An automatic axial flow fan according to claim 3, characterized in that, the diameter of the transmission gear (45) is larger than that of the drive gear (44), and the transmission gear (45) is uniformly provided with through transmission Perforation of gear (45). 5. An automatic axial flow fan according to claim 3, characterized in that a pair of installation rods (47) are fixedly connected to the inner wall of the axial flow fan body (1) and corresponding to the transmission gear (45) , the close end of the installation rod (47) is rotationally connected with the transmission gear (45) through a rotating shaft. 6. An automatic axial flow fan according to claim 1, characterized in that, the axial flow fan body (1) is clamped with a guardrail (2), and the servo motor (11) passes through the mounting frame It is fixed in the axial flow fan body (1).

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