CN218644501U - Air circulation fan and air purifier - Google Patents

Abstract

The utility model belongs to the technical field of air circulation, in particular to an air circulation fan and an air purifier, wherein the air circulation fan comprises a supporting seat, a fan and a rotary driving piece; the supporting seat is provided with a seat body and a supporting rod extending upwards, and the bottom of the seat body is provided with a bottom surface; the upper end of the supporting rod is provided with an installation part, and the rotary driving part is arranged on the installation part and comprises a rotary shaft extending out of the installation part; the fan is arranged on the rotating shaft and is provided with an air outlet; the rotary driving piece drives the rotary shaft to rotate, and the rotary shaft drives the fan to rotate from left to right or from right to left, so that the air outlet is continuously and circularly changed from the inclination downwards to the inclination upwards. Can incline down and incline up through the air outlet, consequently can make indoor air upper and lower circulation, set up the filter screen in the fan, realize filtration's effect, realize filtering air purification.

Description

Air circulation fan and air purifier

Technical Field

The utility model belongs to the technical field of air cycle equipment, especially, relate to an air cycle fan, air purifier.

Background

The air circulation fan generally has a large wind force, and blows air relatively concentrated to form an air flow column, and the air is stirred by the air flow column to circulate the air. At present, a large number of air circulation fans are also applied to air-conditioned rooms, so that indoor air can circularly flow to achieve indoor temperature balance. The conventional air circulation fan also has a swinging function generally, so that indoor air can be sufficiently stirred and circulated.

For example, chinese patent publication No. CN217270953U discloses a motor swing structure of a floor type air circulation fan, and specifically discloses: the fan comprises a circulating fan head assembly, a swinging pipe assembly, a supporting pipe assembly and a base assembly which are sequentially arranged from top to bottom, wherein the middle part of the swinging pipe assembly is bent backwards to form an upper swinging connecting pipe and a lower swinging connecting pipe, and a swinging space is formed between the upper swinging connecting pipe and the lower swinging connecting pipe; an up-down swing mechanism is arranged between the up-down swing connecting pipe and the circulating fan head assembly, and a horizontal swing mechanism is arranged between the down swing connecting pipe and the supporting pipe assembly. The technical scheme of the patent is that a fan head is driven by a swing mechanism to swing circularly on the same horizontal plane; thus allowing the air in the room to circulate only on the same horizontal layer side of the space. It is difficult to realize the continuous flow and circulation of air in the whole room.

For another example, chinese patent publication No. CN212106331U discloses a three-dimensional circulating swing seat and an electric fan, and the technical solution disclosed in the document is: the three-dimensional swinging mechanism is arranged on the inclined part, and the left-right swinging mechanism is arranged on the vertical part; when the object arranged on the output shaft of the three-dimensional swing mechanism is the fan head, the three-dimensional swing mechanism drives the fan head to perform three-dimensional swing air supply, and meanwhile, the left-right swing mechanism drives the fan head to perform left-right swing air supply. However, in this solution, the fan head blows air from the horizontal direction, and gradually turns to blow air vertically upward. Although this fan can realize three-dimensional circulation air supply, it is difficult to circulate air below the space below the fan head. In an air-conditioned room, the temperature of the bottom layer is generally different from the temperature of the upper layer, so that it is difficult to equalize the indoor temperature. In addition, when the air purifier is used in a room, the air purifier can only continuously circulate, filter and purify the air around the air purifier, and the air far away from the air purifier is difficult to circulate, so that even if the air circulation fan is used, the air at the bottom side is difficult to circulate and purify.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an air circulation fan solves the air circulation fan among the prior art and is difficult to the problem that bottom air cycle flows.

In order to achieve the above object, an embodiment of the present invention provides an air circulation fan, which includes a support seat, a fan and a rotary driving member; the supporting seat is provided with a seat body and a supporting rod extending upwards, and the bottom of the seat body is provided with a bottom surface; the upper end of the supporting rod is provided with an installation part, and the rotary driving part is arranged on the installation part and comprises a rotary shaft extending out of the installation part; the fan is arranged on the rotating shaft and is provided with an air outlet; the rotary driving piece drives the rotary shaft to rotate, and the rotary shaft drives the fan to rotate from left to right or from right to left, so that the air outlet is continuously and circularly changed from the inclined downward direction to the inclined upward direction.

Further, the horizontal included angle of the air outlet inclined downwards is 0-75 degrees, and the horizontal included angle of the air outlet inclined upwards is 0-75 degrees.

Further, the biggest horizontal included angle that the air outlet slope is down is 45, and the biggest horizontal included angle that the air outlet slope is up also is 45.

Furthermore, the supporting rod is provided with a vertical axis, the rotating shaft is provided with a rotating axis, and the axis of the rotating shaft and the axis of the supporting rod form an included angle which is larger than 90 degrees and smaller than 180 degrees.

Furthermore, the axis of the rotating shaft and the axis of the supporting rod form an included angle of 120-150 degrees; the normal direction of the air outlet is vertical to the rotating shaft.

Further, the included angle between the axis of the rotating shaft and the axis of the supporting rod is 135 degrees.

Further, the mounting member is provided with a mounting surface which is perpendicular to the rotating shaft.

Further, the mounting piece comprises a base, a rotating seat and an upper shell; the base is arranged at the upper end of the supporting rod, the base is provided with a supporting ring extending upwards, the rotating seat is connected to the upper end of the supporting ring, the upper shell is connected with the rotating seat, and the rotary driving piece is arranged in the upper shell; the air circulation fan further comprises a swinging driving piece which is connected with the upper shell and the base and used for driving the upper shell to rotate in a reciprocating mode.

Further, the swing driving piece comprises a motor, an eccentric connecting rod and a connecting piece; the motor is fixed to be set up in the bottom of last casing or roating seat, and eccentric connecting rod has first end and the second end that is not on same axis, and the main shaft of motor is connected to first end, and the other end rotates the one end of connecting at the connecting piece, and the other end and the base of connecting piece rotate to be connected.

Furthermore, the mounting part also comprises an outer cover, a mounting cavity is arranged in the outer cover, and a top wall of the mounting cavity is provided with a limiting ring; the bottom of the outer cover is provided with a connecting cavity which is sunken into the mounting cavity, and the upper end of the outer cover is provided with an evacuation port; the connecting cavity is sleeved at the upper end of the supporting rod; the bottom of base fixed mounting chamber, roating seat are for setting up the bearing in the spacing collar, and the bottom downwardly extending of going up the casing has the connecting portion of being connected with the bearing, and the motor setting is in connecting portion.

Further, the upper end of bracing piece is provided with the portion of bending, and the installed part setting is on the portion of bending.

Furthermore, the bending included angle between the bending part and the supporting rod is 120-150 degrees, and the rotating shaft is perpendicular to the bending part.

Further, the fan comprises an outer cylinder, a front net, a rear net, a mounting ring, a motor and fan blades; the outer cylinder is of a straight cylinder structure which is communicated from front to back, and the bottom of the outer cylinder is provided with a mounting part which is fixedly connected with the rotating shaft; the inner wall of urceolus sets up spacing portion, and the lateral wall butt of retainer ring is in spacing portion, and is connected with spacing portion detachably, and the center of retainer ring is provided with the casing, is provided with a plurality of connecting strips between casing and the retainer ring, and the bottom of casing still is provided with the support frame that supports at urceolus inner wall, and the motor setting is in the casing, and the main shaft of motor is connected to the flabellum, and preceding net and back net cover respectively close the front end and the rear end at the urceolus.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the air cycle fan have following technological effect at least:

the air circulation fan can be placed on the indoor ground or on the tabletop and other planes through the seat body. The fan runs, and the air outlet blows out air flow, so that the indoor air flow can be stirred; and under the drive of rotary driving piece, the rotation axis drives the fan rotatory for the air outlet of fan is from the slope down, toward left side gradually or turn right side upwards to rotate, from making the air outlet slope up, with this endless loop, realize stirring indoor air stereoscopically. Because the air outlet is from the slope downwards to slope upwards turning, when the slope is down, can blow to the ground, consequently can let the air of bottom also flow, and when the air current blows on ground, the air current receives the hindrance of ground, can expand fast and scatter, increases the area of flow, and when the air outlet upwards turned gradually, can move the air circulation flow of bottom and the air circulation flow of upper strata, increase the efficiency that indoor air flows to and can let indoor air more balanced. And when the air purifier is placed indoors, the purifying efficiency and the air purifying effect can be increased.

An air purifier comprises an air circulation fan and a filter screen; the fan of the air circulation fan is internally provided with an air channel, and the filter screen is arranged in the air channel and used for filtering air circulating in the air channel.

Further, the fan comprises an outer cylinder, a front net, a rear net, a mounting ring, a motor and fan blades; the outer cylinder is of a straight cylinder structure which is communicated from front to back, and the bottom of the outer cylinder is provided with a mounting part which is fixedly connected with the rotating shaft; the inner wall of the outer barrel is provided with a limiting part, the side wall of the mounting ring abuts against the limiting part and is detachably connected with the limiting part, the center of the mounting ring is provided with a casing, a plurality of connecting strips are arranged between the casing and the mounting ring, the bottom of the casing is also provided with a support frame supported on the inner wall of the outer barrel, the motor is arranged in the casing, and the fan blades are connected with a main shaft of the motor; the filter screen is provided with an outer ring, the mounting ring is provided with an inner ring extending towards the rear end of the outer cylinder, the outer ring of the filter screen is hermetically attached to the inner ring of the mounting ring, and the filter screen is abutted against one side of the connecting strip; the front net and the rear net are respectively covered at the front end and the rear end of the outer barrel, and the inner side of the rear net is also provided with a limiting surface which is abutted against the filter screen.

The embodiment of the utility model provides an above-mentioned one or more technical scheme in the air purifier have following technological effect at least:

the air outlet through the fan constantly circulates and turns to from the slope to the slope upwards downwards, consequently the air that enters into in the fan can form the air current, and the air that blows off through the fan reaches the air in the room and constantly circulates, and the air that gets into in the fan passes through the filter screen and filters, realizes air purification's effect to can let indoor holistic air purify fast, improve purification efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a structural diagram of an air circulation fan according to an embodiment of the present invention.

Fig. 2 is a left side view of the air circulation fan according to the embodiment of the present invention.

Fig. 3 is a cross-sectional view of an air circulation fan according to an embodiment of the present invention.

Fig. 4 is a sectional view of a mounting part of an air circulation fan according to an embodiment of the present invention.

Fig. 5 is an exploded view of a fan of an air circulation fan according to an embodiment of the present invention.

Fig. 6 is a cross-sectional view of a fan portion of an air circulation fan according to an embodiment of the present invention.

Fig. 7 is an exploded view of a fan part of an air purifier according to an embodiment of the present invention.

Fig. 8 is a cross-sectional view of a fan portion of an air purifier according to an embodiment of the present invention.

Fig. 9 is a view showing the air purifier according to the embodiment of the present invention.

Fig. 10 is a structural diagram of an air purifier according to another embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings only for the convenience of description of the embodiments of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element so indicated must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate 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 the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, referring to fig. 1 to 3, the air circulation fan includes a support base 100, a fan 200, and a rotary driving member 300. The supporting seat 100 is provided with a seat body 101 and a supporting rod 102 extending upwards, and the bottom of the seat body 101 is provided with a bottom surface which can be supported on the ground or a table top through the bottom surface of the seat body 101. The upper end of the support rod 102 is provided with a mounting part 110, and a rotary driving member 300 is provided on the mounting part 110. Wherein the rotary actuator 300 comprises a rotary shaft 301 extending out of the mounting member 110. The rotary drive 300 may be a motor, or an electric speed reducer, or the like. The blower 200 is disposed on the rotating shaft 301, and the blower 200 has an air outlet 201. The rotary driving member 300 drives the rotary shaft 301 to rotate, the rotary shaft 301 drives the fan 200 to rotate from left to right or from right to left, so that the air outlet 201 is continuously and cyclically changed from inclined downward to inclined upward, and the changing process of the gradual turning of the fan 200 can refer to fig. 9. Therefore, the air circulation fan of the present embodiment can be placed on the floor in a room or on a flat surface such as a table top through the base body 101. By the operation of the fan 200, the air outlet 201 blows out air flow, so that the indoor air flow can be agitated; and under the drive of the rotary driving member 300, the rotary shaft 301 can drive the fan 200 to rotate integrally, the air outlet 201 of the fan 200 rotates downwards from an inclined state, gradually towards the left side or upwards towards the right side, and the air outlet 201 gradually inclines upwards in the rotating process, so that the air is circulated continuously, and the indoor air is stirred three-dimensionally. Because the air outlet 201 turns from the inclined downward direction to the inclined upward direction, when the air outlet is inclined downward, the air can be blown to the ground, so that the air which can stir the bottom layer also flows, and when the air is blown to the ground, the air is blocked by the ground, can be quickly dispersed, and increases the flowing space. When the air outlet 201 turns upwards gradually, the air in the bottom layer can be driven to exchange with and circulate with the air in the upper layer, so that the indoor air flow efficiency is increased, and the indoor air flow can be more balanced. And when the air purifier is placed indoors, the purifying efficiency and the air purifying effect can be increased.

Further, the air outlet 201 rotates to incline downwards, and the horizontal included angle of the air outlet 201 can be 0-75 degrees. When the air outlet 201 rotates to incline upward, the horizontal included angle of the air outlet 201 inclining upward is also 0 to 75 degrees. Furthermore, the maximum horizontal included angle of the air outlet 201 inclined downward is 45 °, and the maximum horizontal included angle of the air outlet 201 inclined upward is also 45 °.

Further, referring to fig. 7 and 8, the air circulation fan of the present embodiment may also be applied to an air purifier to achieve an air purifying effect. Specifically, the air purifier may include an air circulation fan, and further include a filter screen 400. The fan 200 of the air circulation fan is provided with the air passage 202 therein, and the filter 400 is provided in the air passage 202, so that the air passing through the air passage 202 can be filtered and purified by the filter 400. Specifically, the air outlet 201 through the fan 200 continuously and circularly turns from the inclined downward to the inclined upward, so that the air entering the fan 200 forms an air flow, the air blown out through the fan 200 reaches the continuous circulation of the air in the room, the air entering the fan 200 is filtered through the filter screen 400, the air purification effect is realized, the whole indoor air can be rapidly purified, and the purification efficiency is improved.

Further, referring to fig. 5 and 6, the blower 200 includes an outer tub 210, a front net 220, a rear net 230, a mounting ring 240, a motor 250, and fan blades 260. The outer cylinder 210 is a straight cylinder structure which is through from front to back, the bottom of the outer cylinder 210 is provided with an installation part 211 which is fixedly connected with the rotating shaft 301, and the installation part 211 is arranged at the bottom of the outer cylinder 210, so when the rotary driving member 300 drives the fan 200 to rotate, the stress of the rotating shaft 301 can be kept balanced, and the stress condition of the fan 200 can not be changed along with the rotation of the fan 200. The inner wall of the outer cylinder 210 is provided with a limiting part 212, and the side wall of the mounting ring 240 abuts against the limiting part 212 and is detachably connected with the limiting part 212, specifically, a screw connection can be adopted. Be provided with casing 241 in the center of collar 240, be provided with a plurality of connecting strips 242 between casing 241 and the collar 240, support casing 241 through connecting strip 242 for casing 241 can be fixed in the central point of collar 240 and put, and the air current of keeping away that connecting strip 242 can also be fine, makes the air current can normally circulate. The bottom of the casing 241 is further provided with a support 243 supported on the inner wall of the outer cylinder 210, the support stability of the casing 241 is increased by the support 243, the motor 250 is arranged in the casing 241, the fan blades 260 are connected with the main shaft of the motor 250, and the front net 220 and the rear net 230 are respectively covered at the front end and the rear end of the outer cylinder 210. The air circulation is achieved by the motor 250 causing an air flow in the outer tub 210. In addition, the mounting ring 240 is detachably connected to the outer tub 210, so that the motor 250 and the like can be conveniently detached for cleaning.

Still further, referring to fig. 7 and 8, the filter 400 of the air cleaner has an outer ring, the mounting ring 240 has an inner ring extending toward the rear end of the outer cylinder 210, the outer ring of the filter 400 is sealingly attached to the inner ring of the mounting ring 240, and the filter 400 abuts against one side of the connection bar 242. The front net 220 and the rear net 230 are respectively covered at the front end and the rear end of the outer cylinder 210, and the inner side of the rear net 230 is further provided with a limiting surface 231 abutted against the filter screen 400. The filter screen 400 is convenient to disassemble, clean or replace. Specifically, only the rear net 230 needs to be detached. In addition, the connecting strips 242 in the mounting ring 240 can well support and limit the filter screen 400, and the problems of deformation and looseness of the filter screen 400 are avoided.

Further, referring to fig. 3, the supporting rod 102 has a vertical axis a, the rotating shaft 301 has a rotating axis B, and the angle between the axis B of the rotating shaft 301 and the axis of the supporting rod 102 is greater than 90 ° and smaller than 180 °. Therefore, in this embodiment, the air outlet 201 of the fan 200 can be inclined downward or inclined upward. Preferably, the axis of the rotating shaft and the axis of the supporting rod form an included angle of 120-150 degrees. The normal direction of the air outlet is perpendicular to the rotating shaft, i.e. the main shaft of the motor 250 in the fan 200 is perpendicular to the rotating axis B of the rotating shaft 301. More preferably, the rotation axis B of the rotation shaft 301 is at an angle of 135 ° to the axis of the support bar 102. In this embodiment, the air outlet 201 can be inclined 45 ° downward and 45 ° upward, which not only can improve the overall aesthetic effect, but also improve the air circulation effect. More specifically, referring to fig. 9, when the fan 200 is driven to rotate by the rotary driving element 300, the air outlet 201 of the fan 200 can be gradually turned from an inclined downward direction to a horizontal direction toward the left or right side, and then turned from the left or right side to an inclined upward direction.

Further, referring to fig. 4, the mounting device 110 is provided with a mounting surface 111, and the mounting surface 111 is perpendicular to the rotation shaft 301. In the embodiment, the mounting surface 111 can support the rotating shaft 301, and the stress of the rotating shaft 301 and the mounting surface 111 is vertical, so that the problem that the mounting surface 111 is deformed by the gravity of the fan 200 can be avoided.

Further, referring to fig. 4, the mounting member 110 includes a base 112, a swivel 113, and an upper housing 114. The base 112 is disposed at the upper end of the support rod 102, the base 112 is provided with a support ring 115 extending upward, the rotary base 113 is connected at the upper end of the support ring 115, the upper housing 114 is connected with the rotary base 113, and the rotary driving member 300 is disposed in the upper housing 114. The air circulation fan further includes a swing driving member 500, and the swing driving member 500 connects the upper housing 114 and the base 112 for driving the upper housing 114 to rotate reciprocally. Therefore, in this embodiment, the swing driving element 500 can drive the upper housing 114 to swing left and right, and further, while the fan 200 supplies air in a three-dimensional manner, the swing driving element 500 can drive the fan 200 to swing left and right, so that the air supply range is increased, and the air circulation effect is further increased.

Further, referring to fig. 4, the swing drive 500 includes a motor 501, an eccentric link 502, and a connecting member 503. The motor is fixedly arranged at the bottom of the upper shell 114 or the rotating base 113, the eccentric connecting rod 502 is provided with a first end and a second end which are not on the same axis, the first end is connected with the main shaft of the motor 501, the other end is rotatably connected with one end of a connecting piece 503, and the other end of the connecting piece 503 is rotatably connected with the base 112. In this embodiment, the motor 501 drives the eccentric link 503 to rotate, so as to drive the link 503 to perform eccentric swing, and further, the upper housing 114 can be pushed to rotate, and the reciprocating swing motion of the upper housing 114 can be achieved under the action of the eccentric link 502 and the link 503.

Further, referring to fig. 4, the mounting member 110 further includes an outer cover 116, a mounting cavity 117 is disposed in the outer cover 116, and a limiting ring 118 is disposed on a top wall of the mounting cavity 117. The bottom of the housing 116 is provided with a connection cavity 119 recessed into the mounting cavity 117, and the upper end is provided with an evacuation port. The connecting cavity 119 is sleeved at the upper end of the supporting rod 102; the base 112 is fixed at the bottom of the installation cavity 117, the rotating base 113 is a bearing arranged in the spacing ring 118, the bottom of the upper shell 114 extends downwards to form a connecting part 120 connected with the bearing, and the motor 501 is arranged in the connecting part 120.

Further, referring to fig. 10, the upper end of the support rod 102 is provided with a bent portion 103, and the mounting member 110 is provided on the bent portion 103. This embodiment makes installed part 110 demonstrate the slope form through bending portion 103 for fan 200 can realize down and the slope up, and adopts bending structure, simple structure, and is with low costs, and more pleasing to the eye.

Further, referring to fig. 10, the bending included angle between the bending portion 103 and the support rod 102 is 120 to 150 °, and the rotation axis 301 is perpendicular to the bending portion 103. More preferably, the bending angle between the bending part 103 and the supporting rod 102 is 135 °.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (15)

1. An air circulation fan comprises a supporting seat, a fan and a rotary driving piece; the supporting seat is provided with a seat body and a supporting rod extending upwards, and the bottom of the seat body is provided with a bottom surface; the upper end of the supporting rod is provided with an installation part, the rotary driving part is arranged on the installation part, and the rotary driving part comprises a rotary shaft extending out of the installation part; the fan is arranged on the rotating shaft and is provided with an air outlet; the rotary driving part drives the rotary shaft to rotate, the rotary shaft drives the fan to rotate from left to right or from right to left, and the air outlet is enabled to be changed from downward inclination to upward inclination in a continuous and cyclic mode.

2. The air circulation fan according to claim 1, wherein: the horizontal included angle of the air outlet inclined downwards is 0-75 degrees, and the horizontal included angle of the air outlet inclined upwards is 0-75 degrees.

3. The air circulation fan according to claim 2, wherein: the air outlet inclination is 45 degrees at the maximum horizontal included angle, and the air outlet inclination is 45 degrees at the maximum horizontal included angle.

4. The air circulation fan as claimed in claim 1, wherein: the supporting rod is provided with a vertical axis, the rotating shaft is provided with a rotating axis, and the axis of the rotating shaft and the axis of the supporting rod form an included angle which is larger than 90 degrees and smaller than 180 degrees.

5. The air circulation fan according to claim 4, wherein: the axis of the rotating shaft and the axis of the supporting rod form an included angle of 120-150 degrees; the normal direction of the air outlet is vertical to the rotating shaft.

6. The air circulation fan according to claim 5, wherein: the included angle between the axis of the rotating shaft and the axis of the supporting rod is 135 degrees.

7. The air circulation fan according to any one of claims 1 to 6, wherein: the mounting piece is provided with a mounting surface, and the mounting surface is perpendicular to the rotating shaft.

8. The air circulation fan according to claim 7, wherein: the mounting piece comprises a base, a rotating seat and an upper shell; the base is arranged at the upper end of the supporting rod, the base is provided with a supporting ring extending upwards, the rotating seat is connected to the upper end of the supporting ring, the upper shell is connected with the rotating seat, and the rotating driving piece is arranged in the upper shell; the air circulation fan further comprises a swinging driving piece which is connected with the upper shell and the base and used for driving the upper shell to rotate in a reciprocating mode.

9. The air circulation fan according to claim 8, wherein: the swing driving piece comprises a motor, an eccentric connecting rod and a connecting piece; the motor is fixed to be set up go up the casing or the bottom of roating seat, eccentric connecting rod has first end and the second end that is not on same axis, first end is connected the main shaft of motor, and the other end rotates to be connected the one end of connecting piece, the other end and the base of connecting piece rotate to be connected.

10. The air circulation fan according to claim 9, wherein: the mounting piece further comprises an outer cover, a mounting cavity is arranged in the outer cover, and a limiting ring is arranged on the top wall of the mounting cavity; the bottom of the outer cover is provided with a connecting cavity sunken into the mounting cavity, and the upper end of the outer cover is provided with an evacuation port; the connecting cavity is sleeved at the upper end of the supporting rod; the base is fixed the bottom of installation cavity, the roating seat is for setting up bearing in the spacing collar, the bottom downwardly extending of going up the casing have with the connecting portion that the bearing is connected, the motor sets up in the connecting portion.

11. The air circulation fan according to any one of claims 1 to 6, wherein: the upper end of bracing piece is provided with the portion of bending, the installed part sets up on the portion of bending.

12. The air circulation fan according to claim 11, wherein: the bending included angle between the bending part and the supporting rod is 120-150 degrees, and the rotating shaft is perpendicular to the bending part.

13. The air circulation fan according to any one of claims 1 to 6, wherein: the fan comprises an outer barrel, a front net, a rear net, a mounting ring, a motor and fan blades; the outer cylinder is of a straight cylinder structure which is penetrated through from front to back, and the bottom of the outer cylinder is provided with an installation part which is fixedly connected with the rotating shaft; the inner wall of urceolus sets up spacing portion, the lateral wall butt of collar is in spacing portion, and with spacing portion detachably connects, the center of collar is provided with the casing, the casing with be provided with a plurality of connecting strips between the collar, the bottom of casing still is provided with the support and is in the support frame of urceolus inner wall, the motor sets up in the casing, the flabellum is connected the main shaft of motor, preceding net with back net covers respectively and closes the front end and the rear end of urceolus.

14. An air cleaner comprising the air circulation fan according to any one of claims 1 to 12, and further comprising a filter screen; the fan is internally provided with an air duct, and the filter screen is arranged in the air duct and used for filtering air circulating in the air duct.

15. The air purifier of claim 14, wherein: the fan comprises an outer barrel, a front net, a rear net, a mounting ring, a motor and fan blades; the outer cylinder is of a straight cylinder structure which is penetrated through from front to back, and the bottom of the outer cylinder is provided with an installation part which is fixedly connected with the rotating shaft; the inner wall of the outer barrel is provided with a limiting part, the side wall of the mounting ring abuts against the limiting part and is detachably connected with the limiting part, the center of the mounting ring is provided with a casing, a plurality of connecting strips are arranged between the casing and the mounting ring, the bottom of the casing is also provided with a support frame supported on the inner wall of the outer barrel, the motor is arranged in the casing, and the fan blades are connected with a main shaft of the motor; the filter screen is provided with an outer ring, the mounting ring is provided with an inner ring extending towards the rear end of the outer barrel, the outer ring of the filter screen is hermetically attached to the inner ring of the mounting ring, and the filter screen abuts against one side of the connecting strip; the front net and the rear net are respectively covered at the front end and the rear end of the outer barrel, and the inner side of the rear net is also provided with a limiting surface abutted against the filter screen.

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