Fan

Abstract

The utility model belongs to the field of fluid conveying equipment for ventilation, and particularly provides a fan. The fan comprises a fixed seat, a head shaking seat is mounted on the fixed seat, the head shaking seat is provided with a head shaking motor for driving the head shaking seat to shake, more than two supporting arms which are distributed at intervals in the circumferential direction of the head shaking seat are mounted on the head shaking seat, each supporting arm is connected with a fan head, and each fan head comprises a shell, fan blades and a rotating motor for driving the fan blades to rotate. When the oscillating base swings in a reciprocating mode, the fan heads can move along with the supporting arm while blowing air, revolution with the oscillating base as the axis is formed, in this way, in the circumferential direction of swinging of the whole oscillating base, different fan heads cover different fan-shaped areas respectively, the overall blowing range of the fan is expanded, and the requirements of outdoor places are met.

Description

Technical Field

[0001] This utility model belongs to the field of fluid transport equipment for ventilation, and in particular relates to a fan. Background Technology

[0002] In the hot summer, outdoor venues such as stadiums, scenic spots, parks, shuttle bus stops, and amusement parks typically need to be equipped with fans to promote air circulation and achieve a cooling effect. These places have a large flow of people, and people are relatively dispersed in space, which requires the fans to cover a large airflow area.

[0003] Currently, conventional fans on the market only have one fan head (including a rotating motor, blades, and casing), and the airflow range they can cover is very limited. Even fans with oscillation functions generally do not swing the fan head more than 180 degrees, which is still insufficient for outdoor use. Moreover, the larger the oscillation angle, the longer it takes for each oscillation to complete, resulting in a prolonged period without airflow for those seeking coolness after the fan head has moved away, leading to a poor user experience.

[0004] A search revealed that utility model patent CN211288184U discloses a column-type multi-head fan. The fan includes a column, a crossbar is installed at the top of the column, and multiple heads (i.e., fan heads) are installed on the crossbar. The crossbar can be adjusted at an angle relative to the column, and the heads can be adjusted at an angle relative to the crossbar to change the airflow direction of the heads.

[0005] The aforementioned fans increase the airflow range by simply increasing the number of fan heads. Although the airflow direction of the fan head can be changed by adjusting the crossbar and rotating the fan head at a certain angle, the angle of the fan head is fixed when it is working normally, and there is still a large "blind spot" in reality, which cannot meet the needs of some occasions. Utility Model Content

[0006] The purpose of this invention is to provide a fan that solves the technical problem of insufficient airflow range in existing fans.

[0007] To achieve the above objectives, the technical solution for the fan provided by this utility model is as follows:

[0008] A fan includes a fixed base, an oscillating seat mounted on the fixed base, an oscillating motor for driving the oscillating seat to oscillate, and two or more support arms arranged at intervals around the oscillating seat on the oscillating seat. Each support arm is connected to a fan head, and the fan head includes a housing, fan blades, and a rotary motor for driving the fan blades to rotate.

[0009] As a further improvement, the axis of the motor shaft of the rotary motor forms an angle with the line connecting the connection point of the fan head on the support arm to the swing axis of the oscillating seat, and the fan is equipped with a pitch adjustment mechanism. The support arm is mounted on the oscillating seat through the pitch adjustment mechanism to adjust the pitch angle of the fan head.

[0010] As a further improvement, the pitch adjustment mechanism includes an adjustment disc fixed on the support arm and a connecting bolt connecting the adjustment disc and the oscillating seat. The adjustment disc and the oscillating seat each have corresponding through holes for the connecting bolt to pass through, and the through holes provided on the adjustment disc are arc-shaped holes in which the connecting bolt can slide relative to each other. The axis of this arc-shaped hole is the axis of the fan head pitch adjustment.

[0011] As a further improvement, a mounting bracket is fixed to the fan head and mounted on the support arm via the mounting bracket, wherein the mounting bracket has an insertion space for inserting one end of the support arm.

[0012] As a further improvement, the mounting bracket includes two mounting plates that are respectively clamped on the outer surfaces of the upper and lower ends of the support arm. The space between the two mounting plates constitutes the insertion space. The two mounting plates are mounted on the support arm by fastening bolts. The support arm and the two mounting plates each have corresponding through holes for the fastening bolts to pass through. The through holes provided on the two mounting plates are arc-shaped holes in which the fastening bolts can slide relative to each other. The axis of the arc-shaped holes is perpendicular to the upper surface of the support arm.

[0013] As a further improvement, a pivot is connected between the two mounting plates and the support arm, with the axis of the pivot coinciding with the axis of the arc-shaped hole through which the fastening bolt slides.

[0014] As a further improvement, the fan is equipped with a lateral adjustment mechanism. The fan head is connected to the support arm via the lateral adjustment mechanism. The lateral adjustment mechanism includes a rotatable part that is connected to the fan head and can rotate relative to the support arm. The axis of rotation of the rotatable part is perpendicular to the upper surface of the support arm.

[0015] As a further improvement, a water mist nozzle is installed on the fan head. The fan is equipped with a water supply pipe connected to the water mist nozzle. The support arm has a hollow structure, and the water supply pipe passes through the inside of the support arm and connects to the water mist nozzle.

[0016] As a further improvement, the oscillating seat is a box-shaped structure including a housing and a cover, with the oscillating motor located inside the oscillating seat.

[0017] As a further improvement, the axis of the motor shaft of the rotary motor forms an angle with the line connecting the connection point of the fan head on the support arm to the swing axis of the oscillating seat, and there are two support arms, with the fan heads mounted on the two support arms blowing in opposite directions.

[0018] This utility model is a pioneering invention, and its beneficial effects are as follows: The fan provided by this utility model has two or more fan heads. When the oscillating base swings back and forth, each fan head can move with the support arm while blowing air, forming a "revolution" with the oscillating base as the axis. In this way, different fan heads cover different fan-shaped areas in the circumferential direction of the entire oscillating base swing, thereby expanding the overall air blowing range of the fan to meet the needs of outdoor places. Attached Figure Description

[0019] Figure 1 This is a front view of an embodiment of the fan in this utility model;

[0020] Figure 2 for Figure 1 A partial schematic diagram of the top middle position;

[0021] Figure 3 for Figure 1 3D view of the connection point between the oscillating base and the support arm (with the top cover of the oscillating base hidden).

[0022] Figure 4 for Figure 1 A 3D view showing the connection point between the central oscillating seat and the support arm on one side (with the top cover of the oscillating seat hidden).

[0023] Figure 5 for Figure 1 3D view of the connection point between the central oscillating mount and the fan head on one side (with the top cover of the oscillating mount hidden).

[0024] Figure 6 for Figure 2 A 3D view of the mounting bracket;

[0025] Figure 7 for Figure 1 A 3D view of the central fan head;

[0026] Figure 8 This is a schematic diagram of the water supply pipeline in an embodiment of the fan in this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Column; 2. Fan head; 3. Mounting base; 4. Oscillating base; 5. Bearing; 6. Support arm; 7. Adjustment disc; 8. Mounting bracket; 9. Oscillating motor; 10. Micro switch; 11. Limiting post; 12. Water supply pipeline; 201. Spray ring; 202. Water mist nozzle; 701. First arc-shaped hole; 801. Upper mounting plate; 802. Lower mounting plate; 803. Second arc-shaped hole; 804. Rotating shaft; 1201. Water inlet connector; 1202. Rotary joint; 1203. Anti-winding connector; 1204. T-joint; 1205. Hose; 1206. Hose connector. Detailed Implementation

[0029] To expand the airflow coverage of a fan and improve the experience of people cooling off outdoors, the basic technical concept of this utility model is to provide a fan with two or more fan heads, each of which can "revolve" around the oscillating base. In this way, each fan head can cover a certain fan-shaped airflow area, thereby allowing the fan to create a larger airflow coverage area.

[0030] Based on the above concept, the present invention will be further described in detail below with reference to the embodiments.

[0031] As a basic implementation example, such as Figure 1 As shown, the fan in this embodiment is generally a column-type (pile-type) fan. Specifically, as... Figure 2 and Figure 3 As shown, the fan includes a fixed base 3, which is supported by a column 1. An oscillating motor 4 is mounted on the fixed base 3, allowing the oscillating motor 4 to oscillate (reciprocate left and right) within a certain range. For this purpose, the oscillating motor 4 is equipped with an oscillating motor 9 to drive its oscillation. Specifically, the oscillating motor 9 can be a geared motor. The oscillating motor 9 transmits its output power to the oscillating motor 4 through a transmission mechanism. For example, the transmission mechanism can be a bearing 5 (slewing bearing) with teeth on its inner ring. The inner ring can remain relatively fixed to the fixed base 3. The oscillating motor 4 is fixedly connected to the outer ring, and the housing of the oscillating motor 9 is fixed to the outer ring. The output shaft of the oscillating motor 9 is connected to a pinion gear. The output power of the oscillating motor 9 is transmitted through the meshing of the pinion gear with the teeth of the inner ring, thereby driving the outer ring and the oscillating motor 4 to rotate. It should be emphasized that the above is only an example of a relatively convenient and implementable method for transmitting the motor's power to the oscillating motor 4. However, in other embodiments, it is not excluded that the motor's output shaft is connected to the central transmission shaft of the oscillating motor 4 via a coupling. In this case, a geared motor can be used.

[0032] Two support arms 6 are mounted on the oscillating base 4. Ideally, the two support arms 6 are arranged at 180° intervals relative to the central axis of the oscillating base 4, i.e., evenly distributed circumferentially. A fan head 2 is mounted on each of the two support arms 6. The structure of the fan head 2 is basically the same as that of existing technology, such as... Figure 2 and Figure 7 As shown, the fan head 2 includes a housing, a fan cover, a rotary motor, fan blades, etc. When the oscillating base 4 oscillates, it can drive the support arm 6 to move synchronously, thereby enabling the fan head 2 to reciprocate (oscillate) around the oscillation axis of the oscillating base 4 within a certain range.

[0033] Based on the above description, in actual use, the fan in this embodiment, after the rotating motor of the fan head 2 is started, can drive the fan blades to rotate, thereby driving airflow to deliver air to people seeking coolness. While the motor of the fan head 2 is "rotating on its own axis," the fan head 2 can also "revolve" around the oscillation axis of the oscillation base 4, so that the airflow direction of each fan head 2 is not singular and fixed. Each fan head 2 has a certain fan-shaped airflow coverage area. For example, the oscillation base 4 oscillates back and forth within a 90-degree central angle range, and each fan head 2 also has a coverage area of ​​90 degrees. Two fan heads 2 can overlap to form a semi-circular coverage area, which is suitable for use in large outdoor venues.

[0034] It should be added that in some other embodiments, if space permits, three or more support arms 6 can be installed on the oscillating base 4 according to actual needs. Each support arm 6 is spaced apart around the oscillating base 4. Of course, in an ideal situation, the fan heads can also be evenly distributed around the circumference. For example, with three support arms 6, the angle between two adjacent support arms 6 is 120 degrees, and each support arm 6 is equipped with a fan head 2. However, it should be emphasized that since the fan head 2 itself is not too heavy and the oscillation speed is not too high, in some cases, even if the fan heads 2 are not evenly distributed around the oscillating base 4, they can still be used normally with the support of the column 1 and the bearing 5.

[0035] As a preferred embodiment, such as Figure 1 and Figure 2 As shown, the airflow direction of each fan head 2, that is, the axial direction of the rotating motor configured on each fan head 2, is not along the normal direction or radial direction of the oscillation of the oscillating seat 4, but forms an angle with the line connecting the connection point of the fan head on the support arm and the swing axis of the oscillating seat 4. For the case where the support arm is a straight arm, the above-mentioned line is parallel to the extension direction of the support arm. This is to take into account that people in some places will rest or look for "cool breeze" near the column 1. Compared with arranging the airflow direction of the fan head 2 along the normal direction of the oscillation of the oscillating seat 4, this arrangement of the fan head 2 allows the airflow range of the fan head 2 to cover a position closer to the column 1.

[0036] Considering that the required airflow angle varies in different locations, the support arm 6 is mounted on the oscillating base 4 via a pitch adjustment mechanism to adapt to different needs. This mechanism allows for adjustment of the pitch angle of the fan head 2. Specifically, the pitch adjustment mechanism allows the support arm 6 to adjust its angle relative to the oscillating base 4, thereby adjusting the pitch angle of the fan head 2. The fan head 2 should also be able to lock into the adjusted position. In practical use, if the area where people are resting is very close to the column 1, the fan head 2 can be adjusted to swing downwards a certain distance, concentrating the airflow towards the area near the column 1.

[0037] As a specific implementation of the pitch adjustment mechanism, such as Figure 4 As shown, the pitch adjustment mechanism includes an adjustment disc 7 fixed to the support arm 6, which can be welded in place, and bolts connecting the adjustment disc 7 and the oscillating seat 4. These bolts, which can be defined as connecting bolts, are used to fix the adjustment disc 7 to the oscillating seat 4. The specific number of connecting bolts is not limited here, but preferably more than four. Correspondingly, the adjustment disc 7 and the oscillating seat 4 have corresponding through holes for the connecting bolts to pass through. The connecting bolts pass through both the holes in the adjustment disc 7 and the oscillating seat 4 and are locked in place with nuts on the threaded sections. The through holes in the adjustment disc 7 are arc-shaped holes, which can be defined as the first arc-shaped hole 701 for ease of description. When adjusting the adjustment disc 7 to change the installation angle, the connecting bolts can slide relative to each other in the first arc-shaped hole 701. That is, the axis of the first arc-shaped hole 701 is the axis of the pitch adjustment position of the support arm 6 and also the axis of the pitch adjustment angle of the fan head 2. After the adjustment disc 7 is adjusted to the correct position, i.e., after the pitch angle of the fan head 2 is adjusted to the correct position, the connecting bolts can be tightened to lock the adjustment disc 7 in the adjusted position.

[0038] It should be noted that the above is only an example of a preferred method for the pitch adjustment mechanism. This method can conveniently adjust the pitch angle of the fan head 2 while ensuring reliable position locking. However, in other embodiments, those skilled in the art can also use other forms of pitch adjustment mechanisms. For example, the support arm 6 can be designed as a cylindrical structure, with a cylinder installed on the oscillating seat 4. One end of the support arm 6 is inserted into the cylinder, and multiple set screws are provided around the cylinder. When the set screws are loosened, the support arm 6 can rotate in the cylinder. After rotating to a certain angle, the set screws can be tightened to lock the support arm 6 in a specific position.

[0039] In some embodiments, such as Figure 2As shown, when the axis of the rotating motor shaft forms an angle with the line connecting the connection point of the fan head on the support arm to the swing axis of the oscillating seat, in the case of only two support arms 6, the fan heads 2 installed on the two support arms 6 blow air in opposite directions. In this way, when the oscillating seat 4 swings, the two fan heads 2 can blow air "one in front and one behind" towards the people cooling off near the column 1, which can cover a larger area around the column 1, specifically achieving 360-degree full coverage and improving the experience of people cooling off.

[0040] However, it should be emphasized that in other embodiments, depending on actual needs, the airflow direction of the two fan heads can be the same, such as the structure shown in the background art references. Alternatively, the axis of the motor shaft of the rotating motor of each fan head can also be parallel to the line connecting the connection point of the fan head on the support arm to the swing axis of the oscillating seat (back-to-back airflow).

[0041] As a preferred embodiment, such as Figures 2-5 As shown, a mounting bracket 8 is fixed on the fan head 2 and is mounted on the support arm 6 via the mounting bracket 8. The mounting bracket 8 has an insertion space for one end of the support arm 6 to be inserted. When the support arm 6 is inserted into the mounting bracket 8, it can support the fan head 2 and ensure the stability of the fan head 2. The mounting bracket 8 can be glued, fixed to the fan head 2 with fasteners such as bolts, or welded.

[0042] Furthermore, such as Figures 2-6As shown, the mounting bracket 8 includes two mounting plates spaced apart vertically. These two mounting plates can be defined as an upper mounting plate 801 and a lower mounting plate 802, respectively. The space between the upper mounting plate 801 and the lower mounting plate 802 serves as the insertion space for the support arm 6. The upper mounting plate 801 and the lower mounting plate 802 are respectively clamped onto the outer surfaces of the upper and lower ends of the support arm 6. In other words, the mounting bracket 8 can be analogously described as a U-shaped structure with its opening facing the support arm 6; that is, the mounting bracket 8 has a slot with its opening facing the support arm 6. Compared to a fully enclosed socket, this type of mounting bracket 8 provides space for adjusting the mounting angle of the mounting bracket 8 relative to the support arm 6 to adjust the orientation of the fan head 2. Specifically, the upper mounting plate 801 and the lower mounting plate 802 are also bolted to the support arm 6. These bolts can be defined as fastening bolts. Correspondingly, the support arm 6, the upper mounting plate 801, and the lower mounting plate 802 each have corresponding through holes for the fastening bolts to pass through. The through holes on the two mounting plates are arc-shaped holes, which can be defined as second arc-shaped holes 803. By adjusting the position of the mounting bracket 8 relative to the support arm 6, the fastening bolts can slide relative to each other in the second arc-shaped hole 803. The axis of the second arc-shaped hole 803 is perpendicular to the surface of the mounting plate, or in other words, perpendicular to the upper surface of the support arm 6. Depending on actual needs, when the fastening bolts are loosened, the fan head 2 can move and adjust its position relative to the support arm 6 under the constraint of the second arc-shaped hole 803, thereby changing the lateral blowing angle of the fan head 2 so that the fan head 2 can accurately blow air onto the person seeking cooling.

[0043] Furthermore, such as Figure 3 and Figure 5 As shown, a rotating shaft 804 is also provided between the upper mounting plate 801, the lower mounting plate 802, and the support arm 6. Specifically, the rotating shaft 804 can be a pin or a bolt, and the axis of the rotating shaft 804 coincides with the axis of the second arc-shaped hole 803. In this way, with the fastening bolts loosened, the fan head 2 can swing relatively stably while being held in place by the rotating shaft 804, which facilitates actual adjustment.

[0044] Based on the above analysis, it is easy to understand that the mounting bracket 8 and the bolts essentially function as a lateral adjustment mechanism for adjusting the lateral blowing angle of the fan head 2. In some embodiments, to adjust the lateral angle of the fan head 2, a lateral adjustment mechanism can be configured regardless of whether a portion of the support arm 6 is inserted into the mounting bracket 8. Alternatively, the lateral adjustment mechanism can employ a sleeve and set screw type, with a rotatable insert connected to the outer shell of the fan head 2, which rotates within the sleeve to rotate the fan head 2 and adjust the lateral angle. After adjustment, a set screw is used to tighten the adjustment. In general, to adjust the lateral angle of the fan head 2, the most basic requirement is that the lateral adjustment mechanism should include a rotatable portion connected to the fan head 2 and rotatable relative to the support arm 6. The axis of rotation of this rotatable portion should be perpendicular to the upper surface of the support arm 6.

[0045] As an example of a more effective cooling method, such as Figure 2 , Figure 7 and Figure 8 As shown, a water mist nozzle 202 is installed on the fan head 2. In this embodiment, the fan is also equipped with a water supply pipe 12 connected to the water mist nozzle 202. In this case, the fan is actually a cooling mist fan. During use, a high-pressure water pump is required. Purified water is drawn in by the high-pressure water pump and delivered to the water mist nozzle 202 through the water supply pipe 12. The water mist nozzle 202 atomizes the water and sprays out micro-mist particles ranging from 5 to 50 micrometers. These micro-mist particles are quickly diffused and evaporated by the wind, carrying away heat and thus achieving a better cooling effect.

[0046] Specifically, to achieve all-around spraying, a spray ring 201 can be installed on the air outlet cover of the fan head 2. The inside of the spray ring 201 is a channel for water supply and circulation, and multiple water mist nozzles 202 are arranged on the spray ring 201.

[0047] Considering that the oscillating seat 4 is oscillating back and forth, in order to avoid the water supply pipe 12 from getting tangled, such as Figure 7 As shown, the water supply pipeline 12 is equipped with a rotary joint 1202. The specific structure of the rotary joint 1202 is the prior art. Specifically, according to the flow direction of the high-pressure water, from upstream to downstream, the water supply pipeline 12 is sequentially equipped with a water inlet joint 1201, a rotary joint 1202, a tee 1204, and two flexible hoses 1205 that lead to the two fan heads 2 respectively.

[0048] More preferably, the support arm 6 is configured as a hollow structure, with the water supply pipe passing through the interior of the support arm 6 and connecting to the water mist nozzle 202. This makes it easier to arrange the pipes, and the support arm 6 also serves to protect the pipes.

[0049] Considering that in some cases the installation angle of the support arm 6 relative to the oscillating seat 4 may need to be adjusted to change the pitch angle of the fan head 2, an anti-winding connector 1203 is also provided on the water supply pipe 12 to prevent the hose 1205 from tangling. Similarly, the specific structure of the anti-winding connector 1203 is existing technology. Both ends of the hose 1205 are provided with hose connectors 1206, one end of which is connected to the anti-winding connector 1205, and the other end of which is connected to the spray ring 201.

[0050] As another preferred embodiment, such as Figures 1-4As shown, the oscillating seat 4 is a box-shaped structure including a housing and a cover. The oscillating motor 9 is located inside the oscillating seat 4. This design facilitates the installation and maintenance of the oscillating motor 9, and also protects the oscillating motor 9, making it suitable for outdoor environments with wind and rain. Specifically, the cover of the oscillating seat 4 is openable and closable. Of course, those skilled in the art will understand that in other embodiments, the oscillating motor 9 can also be installed in other locations, such as inside the hollow column 1. In this case, an access door needs to be provided on the column 1.

[0051] In addition, to precisely control the reciprocating swaying angle of the swaying seat 4, such as Figure 3 As shown, the fan is equipped with two microswitches 10 that rotate with the oscillating base 4. Two limit posts 11 are installed on the fixed inner ring of the bearing 5. When one microswitch 10 touches one of the limit posts 11, the controller detects the signal from the microswitch 10 and controls the oscillating motor 9 to reverse. When it reverses a certain angle until the other microswitch 10 touches the other limit post 11, the controller detects the signal from the microswitch 10 and controls the oscillating motor 9 to reverse again, thus achieving the reciprocating oscillation of the oscillating base 4. However, it should be emphasized that in other embodiments, it is not ruled out that an encoder may be directly installed on the motor shaft of the oscillating motor 9 to detect the rotation angle of the motor shaft and thus control the forward and reverse rotation of the motor shaft.

[0052] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fan, characterized in that, It includes a fixed base, on which a oscillating seat is mounted. The oscillating seat is equipped with an oscillating motor that drives it to oscillate. Two or more support arms are mounted on the oscillating seat and spaced apart around the circumference of the oscillating seat. Each support arm is connected to a fan head. The fan head includes a housing, fan blades, and a rotary motor that drives the fan blades to rotate.

2. The fan according to claim 1, characterized in that, The axis of the motor shaft of the rotary motor forms an angle with the line connecting the connection point of the fan head on the support arm to the swing axis of the oscillating seat, and the fan is equipped with a pitch adjustment mechanism. The support arm is mounted on the oscillating seat through the pitch adjustment mechanism to adjust the pitch angle of the fan head.

3. The fan according to claim 2, characterized in that, The pitch adjustment mechanism includes an adjustment disc fixed on the support arm and a connecting bolt connecting the adjustment disc and the oscillating seat. The adjustment disc and the oscillating seat each have corresponding through holes for the connecting bolt to pass through. The through holes on the adjustment disc are arc-shaped holes in which the connecting bolt can slide relative to each other. The axis of this arc-shaped hole is the axis of the fan head pitch adjustment.

4. The fan according to claim 1, 2, or 3, characterized in that, A mounting bracket is fixed to the fan head and is mounted on the support arm via the mounting bracket, wherein the mounting bracket has an insertion space for inserting one end of the support arm.

5. The fan according to claim 4, characterized in that, The mounting bracket includes two mounting plates that are respectively clamped on the outer surfaces of the upper and lower ends of the support arm. The space between the two mounting plates constitutes the insertion space. The two mounting plates are mounted on the support arm by fastening bolts. The support arm and the two mounting plates each have corresponding through holes for the fastening bolts to pass through. The through holes provided on the two mounting plates are arc-shaped holes in which the fastening bolts can slide relative to each other. The axis of the arc-shaped hole is perpendicular to the upper surface of the support arm.

6. The fan according to claim 5, characterized in that, A pivot is also connected between the two mounting plates and the support arm, and the axis of the pivot coincides with the axis of the arc-shaped hole in which the fastening bolt slides.

7. The fan according to claim 1, 2, or 3, characterized in that, The fan is equipped with a lateral adjustment mechanism. The fan head is connected to the support arm through the lateral adjustment mechanism. The lateral adjustment mechanism includes a rotatable part that is connected to the fan head and can rotate relative to the support arm. The rotation axis of the rotatable part is perpendicular to the upper surface of the support arm.

8. The fan according to claim 1, 2, or 3, characterized in that, The fan head is equipped with a water mist nozzle, and the fan is equipped with a water supply pipe connected to the water mist nozzle. The support arm has a hollow structure, and the water supply pipe passes through the inside of the support arm and connects to the water mist nozzle.

9. The fan according to claim 1, 2, or 3, characterized in that, The oscillating base is a box-shaped structure that includes a housing and a cover, with the oscillating motor located inside the oscillating base.

10. The fan according to claim 1, characterized in that, The axis of the motor shaft of the rotary motor forms an angle with the line connecting the connection point of the fan head on the support arm to the swing axis of the oscillating seat, and there are two support arms, and the air blowing directions of the fan heads installed on the two support arms are opposite.

Images