CN216950932U

CN216950932U - Axial flow fan of convertible wind direction

Info

Publication number: CN216950932U
Application number: CN202220648914.9U
Authority: CN
Inventors: 安文博; 李季聪; 薛涛; 张泓铎; 刘有金; 高浪
Original assignee: Huaneng Dingbian New Energy Electricity Generating Co ltd
Current assignee: Huaneng Dingbian New Energy Electricity Generating Co ltd
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-07-12
Anticipated expiration: 2032-03-23
Also published as: DE202022102753U1

Abstract

The utility model provides an axial flow fan capable of changing wind direction, which comprises a fan shell, wherein a first rotating shaft is rotatably connected in the fan shell through a bearing, a motor for driving the first rotating shaft is fixedly arranged at the upper end of the fan shell, a mounting seat is fixed at the front end of the first rotating shaft, fan blades which are arranged at equal intervals are arranged around the mounting seat, second rotating shafts are respectively arranged at the bottom ends of the fan blades, a third rotating shaft is arranged at the center position of the front end of the mounting seat, the third rotating shaft is meshed with the second rotating shaft through a bevel gear, the third rotating shaft is rotated to enable a plurality of second rotating shafts to synchronously rotate so as to drive the fan blades to rotate, a limiting locking piece is arranged at the front end of the third rotating shaft, a plurality of limiting holes are arranged on the mounting seat, a limiting rod is arranged on the limiting locking piece, the third rotating shaft is fixed through the action of the limiting holes and the limiting rod, so that the fan blades are fixed after rotating, and the direction of airflow can be changed after the fan blades rotate, the axial flow fan can realize air inlet and exhaust without adjusting the direction of the fan shell.

Description

Axial flow fan of convertible wind direction

Technical Field

The utility model relates to the technical field of axial flow fans, in particular to an axial flow fan with a convertible wind direction.

Background

The axial flow fan has a very wide application range, namely airflow in the same direction as the axis of the fan blade, such as an electric fan, and an air conditioner external fan is a fan operated in an axial flow mode, so the axial flow fan is called as an axial flow mode, because the air flows in parallel to the fan axis, the axial flow fan is fixed in position and enables the air to move, the axial flow fan mainly comprises a fan impeller and a casing, the structure is simple, but the data requirement is very high;

at present traditional axial fan flabellum inclination is unchangeable to make traditional axial fan all can only let the air current flow to the opposite side from fixed one side, in some axial fan by fixed special occasions, probably need the air inlet promptly and also need carminative demand, thereby probably install two axial fan and satisfy the demand, thereby raise the cost, and occupy the place.

Aiming at the problems, the novel design is carried out on the basis of the original axial flow fan.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an axial flow fan capable of changing the wind direction, and aims to solve the problems that the inclination angle of the fan blades of the conventional axial flow fan is not changeable, the airflow can only flow from one fixed side to the other fixed side, and in some special occasions where the axial flow fan is fixed, the requirements of air inlet and air exhaust can be met, so that two axial flow fans can be installed to meet the requirements, the cost is increased, and the space is occupied.

The utility model provides an axial flow fan capable of changing wind direction, which comprises a fan shell, wherein a first rotating shaft is arranged in the fan shell and is rotationally connected with the fan shell through a bearing, a first driving wheel is fixedly connected with the rear end of the first rotating shaft, a motor is fixed on the outer side of the fan shell, a second driving wheel is fixed on an output shaft of the motor, and the second driving wheel is in transmission connection with the first driving wheel; the utility model discloses a spacing lock, including mount pad, second pivot, first bevel gear, spacing latch fitting, the front end of first pivot is fixed with the mount pad, be equipped with the flabellum of equidistant arrangement around the mount pad, every the second pivot is all installed to the bottom of flabellum, the second pivot with the mount pad rotates to be connected, the second pivot is located the inside one end of mount pad is connected with first bevel gear, the front end central point of mount pad puts to rotate and is connected with the third pivot, the third pivot is located the inside one end fixed mounting of mount pad have with first bevel gear meshed second bevel gear, the third pivot is kept away from spacing latch fitting is installed to second bevel gear's one end, spacing latch fitting can be followed the axis of third pivot slides, be equipped with a plurality of spacing holes on the mount pad, be equipped with on the spacing latch fitting with spacing hole complex gag lever post.

Further, spacing latch fitting includes the inserted bar, the third pivot is kept away from the middle part of the one end of second bevel gear seted up with the jack that the inserted bar was mutually supported, the front end of inserted bar is fixed with the rotating block, the intermediate position fixedly connected with guide bar of inserted bar, the axis of guide bar with the axis mutually perpendicular of inserted bar, set up in the third pivot with the spout that the guide bar was mutually supported, the guide bar runs through extend to behind the spout in the mount pad, the front end of mount pad seted up with guide bar matched with guide spacing groove, the guide spacing inslot is equipped with two the spacing hole, be equipped with on the guide bar with spacing hole complex the gag lever post.

Furthermore, the bottom of the jack is fixed with a magnetic suction block, the inserted bar is made of iron, and the bottom of the inserted bar and the magnetic suction block are attracted with each other.

Furthermore, the first driving wheel and the second driving wheel are both belt pulleys, and driving belts are installed on the first driving wheel and the second driving wheel.

Furthermore, the first driving wheel and the second driving wheel are chain wheels, and a driving chain is arranged on the first driving wheel and the second rotating wheel.

Furthermore, both sides all can be dismantled around the fan shell and install the protection casing, the protection casing is close to one side of fan shell is equipped with the fixture block, fan shell around both ends seted up with fixture block complex draw-in groove.

Further, the second pivot is close to the one end of flabellum is fixed with the installation piece, the flabellum is close to the one end fixedly connected with mounting panel of mount pad, the inside of installation piece seted up with mounting panel matched with mounting groove, the mounting panel block is in the mounting groove, the slot has been seted up to the side of installation piece, the internally mounted of mounting groove has the telescopic link, the outer end of telescopic link is fixed with the plywood that supports, support the plywood with the mounting panel supports each other and closes, the outside cover of telescopic link is equipped with the spring, the both ends of spring respectively with the inner wall of mounting groove with support the plywood and support each other and close.

Furthermore, the front end of the abutting plate is provided with a pressing plate.

Furthermore, a support frame is fixed inside the fan shell, and an outer ring of the bearing is fixed on the support frame.

Further, the fan shell is cylindrical.

Compared with the prior art, the utility model has the beneficial effects that: drive a plurality of through the second bevel gear rather than the first bevel gear of meshing and rotate, thereby realize the rotation of flabellum, and through mutually supporting of spacing hole on the mount pad and gag lever post on the spacing latch fitting, realize the restriction to flabellum turned angle, during the transform air current direction, make the flabellum just in time rotatory ninety degrees, make the flabellum realize the angular rotation through ingenious design, thereby make axial fan under the prerequisite of the direction that does not need to adjust the fan shell, can realize the air inlet, also can realize carminative effect, the device's practicality has been improved greatly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 3 is a half sectional view of the right side view of the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 3 according to the present invention;

FIG. 5 is a schematic perspective view of the first shaft, the first driving wheel, the mounting seat and the mounting block of the present invention;

fig. 6 is a cross-sectional view of the mounting block of the present invention mated with a positive lock;

FIG. 7 is a schematic perspective view of the second shaft, the first bevel gear, the third shaft, the second bevel gear and the mounting block of the present invention;

FIG. 8 is a schematic view of the overall construction of a positive lock assembly of the present invention;

FIG. 9 is a schematic structural view of the fan blade, the mounting plate, the telescopic rod, the abutting plate, the spring and the pressing plate of the present invention.

Description of reference numerals: 1-a fan shell, 211-a first rotating shaft, 212-a first driving wheel, 213-a motor, 214-a second driving wheel, 215-a driving belt, 216-a mounting seat, 217-a fan blade, 311-a second rotating shaft, 312-a first bevel gear, 313-a third rotating shaft, 314-a second bevel gear, 315-an inserted link, 316-an inserted link, 317-a rotating block and 318-a guide link, 319-chute, 320-guide limit groove, 321-limit rod, 322-limit hole, 323-magnetic attraction block, 411-installation block, 412-installation plate, 413-installation groove, 414-slot, 415-telescopic rod, 416-abutting plate, 417-spring, 418-pressing plate, 511-protective cover, 512-clamping block and 513-clamping groove.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present 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 implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1 to 9, an axial flow fan capable of changing a wind direction includes a cylindrical fan housing 1, a first rotating shaft 211 rotatably connected to the fan housing 1 through a bearing is disposed inside the fan housing, a supporting frame is fixed inside the fan housing, and an outer ring of the bearing is fixed to the supporting frame. The rear end of the first rotating shaft 211 is fixedly connected with a first driving wheel 212, the outer side of the fan shell 1 is fixedly provided with a motor 213, an output shaft of the motor 213 is fixedly provided with a second driving wheel 214, and the second driving wheel 214 is in driving connection with the first driving wheel 212; the front end of the first rotating shaft 211 is fixed with a mounting seat 216, the periphery of the mounting seat 216 is provided with fan blades 217 arranged at equal intervals, the bottom end of each fan blade 217 is provided with a second rotating shaft 311, the second rotating shaft 311 is rotatably connected with the mounting seat 216, one end of the second rotating shaft 311, which is positioned inside the mounting seat 216, is connected with a first bevel gear 312, the center position of the front end of the mounting seat 216 is rotatably connected with a third rotating shaft 313, one end of the third rotating shaft 313, which is positioned inside the mounting seat 216, is fixedly provided with a second bevel gear 314 meshed with the first bevel gear 312, the second bevel gear 314 is rotated through the third rotating shaft 313, then the first bevel gear 312 is driven to rotate by the second bevel gear 314, and then the fan blades 217 are driven to rotate, so that the fan blades 217 rotate by 90 degrees, the air flow direction is changed through the angle change of the fan blades 217, so that the axial flow fan can realize air intake and exhaust, and does not need to adjust the direction of the fan housing 1, the practicability of the device is greatly improved.

As shown in fig. 3-4 and 6-8, a limiting locking element is installed at one end of the third rotating shaft 313 far from the second bevel gear 314, the limiting locking element can slide along an axis of the third rotating shaft 313, the limiting locking element includes a plunger 315, an insertion hole 316 matched with the plunger 315 is formed in the middle of one end of the third rotating shaft 313 far from the second bevel gear 314, a rotating block 317 is fixed at the front end of the plunger 315, a guide rod 318 is fixedly connected to the middle of the plunger 315, the axis of the guide rod 318 is perpendicular to the axis of the plunger 315, a sliding slot 319 matched with the guide rod 318 is formed in the third rotating shaft 313, the guide rod 318 extends into the mounting seat 216 after penetrating through the sliding slot 319, a guide limiting slot 320 matched with the guide rod 318 is formed in the front end of the mounting seat 216, two limiting holes 322 are formed in the guide limiting slot 320, and a limiting rod 321 matched with the limiting hole 322 is formed in the guide rod 318. When it is desired to rotate fan blade 217 to change the direction of airflow: the insertion rod 315 is pulled outwards to move the guide rod 318 along the sliding slot 319, the limiting rod 321 is moved out of one limiting hole 322 at the moment, then the third rotating shaft 313 is rotated, when the guide rod 318 rotates to the other side of the guide limiting slot 320, the insertion rod 315 is pushed to move along the sliding slot 319 again to insert the limiting rod 321 into the other limiting hole 322, and therefore the third rotating shaft 313 is fixed; by turning the guide bar 318 from one side of the guide limit slot 320 to the other, the fan blade 217 is now rotated exactly 90. In order to avoid the fan blade 217 from automatically deflecting due to the action of air flow when the fan works, the magnetic attraction block 323 is fixed at the bottommost end of the insertion hole 316, the insertion rod 315 is made of iron, the bottom end of the insertion rod 315 is attracted with the magnetic attraction block 323, when the limiting rod 321 is inserted into the limiting hole 322, the insertion rod 315 is just attracted to the magnetic attraction block 323, and therefore the situation that the fan blade 217 deflects due to the fact that the insertion rod 315 automatically extends forwards is effectively avoided.

In this embodiment, the first driving wheel 212 and the second driving wheel 214 are both belt pulleys, the driving belt 215 is installed on the first driving wheel 212 and the second driving wheel 214, the motor 213 works to drive the second driving wheel 214 to rotate, and then the driving belt 215 drives the first driving wheel 212 to rotate. In addition, the first driving wheel 212 and the second driving wheel 214 can be provided as chain wheels, and driving chains are arranged on the first driving wheel 212 and the second rotating wheel. The adaptive selection can be made according to the actual situation.

The protection cover 511 is detachably mounted on the front side and the rear side of the fan shell 1, in order to facilitate the detachment of the protection cover 511, a clamping block 512 is arranged on one side of the protection cover 511 close to the fan shell 1, and clamping grooves 513 matched with the clamping block 512 are formed in the front end and the rear end of the fan shell 1. Through anticlockwise rotation protection casing 511, make fixture block 512 rotate the opening part of draw-in groove 513, can take off protection casing 511 from fan housing 1 this moment, and during the installation, insert the opening part of draw-in groove 513 with fixture block 512, clockwise rotation again, rotate the innermost end of draw-in groove 513 until fixture block 512, thereby install protection casing 511 on fan housing 1, the loading and unloading of protection casing 511 of being convenient for, can improve the security when this axial fan uses through protection casing 511, and through taking protection casing 511 down the back, be convenient for adjust the angle of flabellum 217, also be convenient for dismantle flabellum 217, and is simple to handle, therefore, the clothes hanger is strong in practicability.

As shown in fig. 5, 7 and 9, in order to achieve the detachable performance of the fan blade 217, an installation block 411 is fixed at one end of the second rotating shaft 311 close to the fan blade 217, an installation plate 412 is fixedly connected at one end of the fan blade 217 close to the installation base 216, an installation groove 413 matched with the installation plate 412 is formed inside the installation block 411, the installation plate 412 is clamped in the installation groove 413, a slot 414 is formed in a side surface of the installation block 411, and when the fan blade 217 is detached and installed, the installation plate 412 is plugged into the installation groove 413 through the slot 414; an expansion link 415 is arranged in the mounting groove 413, a butting plate 416 is fixed at the outer end of the expansion link 415, the butting plate 416 and the mounting plate 412 are butted with each other, a spring 417 is sleeved outside the expansion link 415, and two ends of the spring 417 are butted with the inner wall of the mounting groove 413 and the butting plate 416 respectively; the front end of the abutting plate 416 is provided with a pressing plate 418, the abutting plate 416 moves towards the bottom of the mounting groove 413 by pressing the pressing plate 418 downwards, the telescopic rod 415 is shortened at the moment, and the spring 417 is compressed, so that the mounting plate 412 can be taken out of the slot 414, the fan blades 217 can be replaced conveniently, and dust on the surfaces of the fan blades 217 can be cleaned conveniently. When the fan blade 217 is mounted on the mounting plate, the abutment plate 416 is forced by the spring 417 to depress the mounting plate 412, thereby preventing the fan blade 217 from being disengaged from the mounting block 411 during use.

The working principle is as follows: when the axial flow fan is used, the motor 213 is started, so that the output shaft of the motor 213 drives the second transmission wheel 214 to rotate, the second transmission wheel 214 drives the first transmission wheel 212 to rotate, the first rotating shaft 211 rotates, the fan blades 217 are driven to rotate, and air is driven to flow from one side of the fan housing 1 to the other side.

When the airflow direction of the axial flow fan needs to be adjusted, firstly, the protection cover 511 is rotated counterclockwise, so that the fixture block 512 rotates to the opening of the fixture slot 513, at this time, the protection cover 511 can be taken down from the fan housing 1, the rotating block 317 is pulled to move forward, so that the inserted rod 315 drives the guide rod 318 to move to the front end of the chute 319, at this time, the bottom end of the inserted rod 315 disengages from the magnetic attraction block 323, the limiting rod 321 disengages from the limiting hole 322, the rotating block 317 is rotated, so that the guide rod 318 drives the third rotating shaft 313 to rotate, thereby the second bevel gear 314 rotates, the first bevel gear 312 rotates, so that the second rotating shaft 311 rotates to drive the fan blade 217 to rotate, until the guide rod 318 rotates to the other side of the guide limiting slot 320, at this time, the fan blade 217 just rotates ninety degrees, the inserted rod 315 is pushed, so that the guide rod 318 moves to the rear end of the chute 319, at this time, the bottom end of the inserted rod 315 re-attracts the magnetic attraction block 323, the limiting rod 321 is inserted into another limiting hole 322, and at this time, the blowing direction of the axial flow fan is changed;

when the fan blade 217 needs to be detached, the pressing plate 418 is pressed downwards, so that the abutting plate 416 moves towards the bottom of the mounting groove 413, the spring 417 is compressed, the mounting plate 412 can be taken out of the mounting slot 414, the fan blade 217 is detached from the mounting block 411, dust cleaning treatment can be performed on the fan blade 217 at the moment, when the fan blade 217 is damaged, a new fan blade 217 is replaced, the mounting plate 412 is reinserted into the mounting groove 413 from the mounting slot 414, the pressing plate 418 is released, the spring 417 rebounds, the abutting plate 416 is pushed to clamp the mounting plate 412, and the fan blade 217 is fixed on the mounting block 411, so that the whole working process of the device is completed, and the content which is not described in detail in the specification belongs to the prior art which is known to a person skilled in the art.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An axial flow fan capable of changing wind directions is characterized by comprising a fan shell, wherein a first rotating shaft which is rotatably connected through a bearing is arranged in the fan shell, a first driving wheel is fixedly connected to the rear end of the first rotating shaft, a motor is fixed to the outer side of the fan shell, a second driving wheel is fixed to an output shaft of the motor, and the second driving wheel is in transmission connection with the first driving wheel; the utility model discloses a spacing lock, including mount pad, first pivot, mount pad, second pivot, third pivot, spacing latch fitting, spacing hole complex gag lever post, the front end of first pivot is fixed with the mount pad, be equipped with the flabellum of equidistant arrangement around the mount pad, every the second pivot is all installed to the bottom of flabellum, the second pivot with the mount pad rotates to be connected, the second pivot is located the inside one end of mount pad is connected with first bevel gear, the front end central point of mount pad puts and rotates and is connected with the third pivot, the third pivot is located the inside one end fixed mounting of mount pad have with first bevel gear meshing's second bevel gear, the third pivot is kept away from spacing latch fitting is installed to the one end of second bevel gear, spacing latch fitting can follow the axis of third pivot slides, be equipped with a plurality of spacing holes complex gag lever post on the mount pad, be equipped with on the spacing latch fitting.

2. The axial flow fan capable of changing the wind direction according to claim 1, wherein the limiting locking member comprises an insertion rod, a jack matched with the insertion rod is formed in the middle of one end, away from the second bevel gear, of the third rotating shaft, a rotating block is fixed to the front end of the insertion rod, a guide rod is fixedly connected to the middle of the insertion rod, the axis of the guide rod is perpendicular to the axis of the insertion rod, a sliding groove matched with the guide rod is formed in the third rotating shaft, the guide rod penetrates through the sliding groove and then extends into the mounting seat, a guiding limiting groove matched with the guide rod is formed in the front end of the mounting seat, two limiting holes are formed in the guiding limiting groove, and the limiting rod matched with the limiting holes is arranged on the guide rod.

3. The axial flow fan capable of changing the wind direction as claimed in claim 2, wherein a magnetic block is fixed at the bottom end of the insertion hole, the insertion rod is made of iron, and the bottom end of the insertion rod and the magnetic block are attracted to each other.

4. The axial flow fan capable of changing the wind direction according to claim 1, wherein the first driving wheel and the second driving wheel are both belt pulleys, and driving belts are installed on the first driving wheel and the second driving wheel.

5. The axial flow fan capable of changing the wind direction as claimed in claim 1, wherein the first driving wheel and the second driving wheel are both chain wheels, and a driving chain is installed on the first driving wheel and the second driving wheel.

6. The axial flow fan with the convertible wind direction as claimed in claim 1, wherein the front and the back of the fan housing are detachably mounted with protective covers, one side of the protective cover close to the fan housing is provided with a clamping block, and the front and the back of the fan housing are provided with clamping grooves matched with the clamping block.

7. The axial flow fan capable of changing the wind direction as claimed in claim 1, wherein the second rotating shaft is close to one end of the fan blade and is fixed with an installation block, the fan blade is close to one end fixedly connected with installation plate of the installation seat, an installation groove matched with the installation plate is arranged inside the installation block, the installation plate is clamped in the installation groove, a slot is arranged on the side surface of the installation block, an expansion link is arranged inside the installation groove, a butt joint plate is fixed at the outer end of the expansion link, the butt joint plate and the installation plate are mutually butted, a spring is sleeved on the outer side of the expansion link, and two ends of the spring are respectively butted with the inner wall of the installation groove and the butt joint plate.

8. The axial flow fan capable of changing the wind direction as claimed in claim 7, wherein a pressing plate is provided at the front end of the engaging plate.

9. The axial flow fan capable of changing the wind direction as claimed in claim 1, wherein a support frame is fixed inside the fan housing, and an outer ring of the bearing is fixed on the support frame.

10. The axial flow fan capable of changing a wind direction of claim 1, wherein the fan housing is cylindrical.