CN218913201U - Vehicle-mounted axial flow blower - Google Patents

Abstract

The utility model provides a vehicle-mounted axial flow blower which comprises a shell component, a blowing component and a rotating component, wherein the blowing component comprises an air inlet component, an air outlet component and a duct component, the duct component comprises a duct motor, a flow guide cone which is matched with one end of the duct motor and an axial flow fan blade which is matched with the other end of the duct motor, and the duct motor is a brushless motor; the rotating assembly comprises a control handle, a first rotary table, a fixing assembly penetrating the first rotary table, a control line connecting the control handle with the fixing assembly and a second rotary table located below the first rotary table, one end of the first rotary table is fixedly connected with the shell assembly and the blowing assembly, the other end of the first rotary table is rotationally connected with the second rotary table, a plurality of fixing holes are formed in the second rotary table, and the control handle is configured to be: when the control handle is pressed, the control wire drives the fixing component to be separated from the fixing hole; after the control handle is released, the fixing component drives the control wire to automatically reset, and the fixing component is reinserted into the fixing hole.

Description

Vehicle-mounted axial flow blower

Technical Field

The utility model relates to a vehicle-mounted axial flow blower, and belongs to the technical field of blowers.

Background

The conventional vehicle-mounted blower usually adopts centrifugal fan blades, and the centrifugal fan blades have the advantage of large air quantity due to large volume. However, when the centrifugal fan blade rotates, the wind speed is lower, and in order to increase the wind speed, a mode of increasing power is generally adopted, so that the product has high power consumption and low ventilation efficiency.

In addition, when the conventional vehicle-mounted blower turns to blow, the turning angle is not easy to fix, so that the turning to blow is very difficult.

In view of the foregoing, there is a need for an improvement over existing vehicle blowers to address the above-described problems.

Disclosure of Invention

The utility model aims to provide a vehicle-mounted axial flow blower, which solves the technical problems of low wind speed, high power consumption and low ventilation efficiency when centrifugal blades are adopted in the prior art, and also solves the problem of difficult rotary blowing.

In order to achieve the above object, the present utility model provides a vehicle-mounted axial flow blower, comprising:

a housing assembly;

the air blowing assembly comprises an air inlet assembly, an air outlet assembly and a duct assembly connected between the air inlet assembly and the air outlet assembly, the duct assembly comprises a duct motor, a guide cone and an axial flow fan blade, the guide cone is installed in a matched mode with one end of the duct motor, the axial flow fan blade is installed in a matched mode with the other end of the duct motor, and the duct motor is a brushless motor; and

the rotating assembly comprises a control handle, a first rotary table, a fixed assembly penetrating through the first rotary table, a control line connecting the control handle with the fixed assembly and a second rotary table located below the first rotary table, one end of the first rotary table is fixedly connected with the shell assembly and the blowing assembly, the other end of the first rotary table is rotationally connected with the second rotary table, a plurality of fixing holes are formed in the second rotary table, and the control handle is configured to: when the control handle is pressed, the control wire drives the fixing component to be separated from the fixing hole; after the control handle is released, the fixing component drives the control wire to automatically reset, and the fixing component is reinserted into the fixing hole.

As a further improvement of the utility model, the plurality of fixing holes are arranged in an arc shape on the second turntable at intervals, and the distance between each fixing hole and the rotation axis of the first turntable is equal.

As a further improvement of the utility model, the fixing component comprises a fixing seat fixedly connected with the first rotating disc, a fixing piece fixedly connected with the control wire and a spring sleeved outside the fixing piece, wherein the fixing piece penetrates through the fixing seat and enables the spring to be limited between the fixing piece and the fixing seat.

As a further improvement of the present utility model, when the control handle is pressed, the control wire pulls the fixing member to move upwards, the spring is compressed, and the fixing member is separated from the fixing hole; after the control handle is released, the spring pushes the fixing piece to move downwards, so that the fixing piece is reinserted into the fixing hole.

As a further improvement of the utility model, a limiting seat is also fixed on the first turntable, and one end of the control wire connected with the fixing piece is accommodated in the limiting seat and can move up and down in synchronization with the fixing piece in the limiting seat.

As a further improvement of the utility model, the rotating assembly further comprises a bearing fixing column fixed on the second turntable, a bearing sleeved on the bearing fixing column and a bearing sleeve fixed on the first turntable, wherein the bearing fixing column and the bearing penetrate through the first turntable and are accommodated in the bearing sleeve, so that the first turntable can rotate relative to the second turntable.

As a further improvement of the utility model, the bearing comprises a first bearing and a second bearing which is positioned above the first bearing, wherein the first bearing is sleeved on the bearing fixing column and passes through the first turntable together so as to be contained at the bottom of the bearing sleeve, and the second bearing enters from the top of the bearing sleeve and is sleeved on the bearing fixing column.

As a further improvement of the utility model, the rotating assembly further comprises a locking member which enters from the top of the bearing sleeve and is sleeved on the top of the bearing fixing column, and the locking member is locked and fixed with the bearing fixing column so as to connect the first turntable and the second turntable.

As a further improvement of the utility model, the air inlet assembly comprises an air inlet and an air inlet pipe connected with the air inlet, the air inlet pipe is accommodated in the shell assembly and is connected with the ducted motor, and the axial flow fan blade is arranged close to the air inlet pipe so as to drive external air to enter the air inlet pipe from the air inlet.

As a further improvement of the utility model, the air inlet assembly further comprises an air inlet cover assembled and matched with the shell assembly, and the air inlet is arranged on the air inlet cover.

As a further improvement of the utility model, the duct assembly is provided with two air outlet assemblies, the air outlet assemblies comprise two air outlet pipes which are respectively and correspondingly connected with the two duct assemblies, and the first rotary table is provided with perforations for the two air outlet pipes to pass through.

As a further improvement of the utility model, the air outlet pipe is a bent pipe.

As a further improvement of the utility model, the shell assembly comprises a first shell and a second shell which are mutually assembled and fixed, the first shell and the second shell are both fixed on the upper surface of the first rotary table, the duct assembly is accommodated in an accommodating space formed by the first shell and the second shell in a surrounding manner, and the duct assembly is perpendicular to the first rotary table.

As a further improvement of the utility model, the shell assembly further comprises a control assembly fixed outside the first shell and a protective cover covered outside the control assembly, wherein the protective cover and the first shell are mutually assembled and matched so as to limit the control assembly between the protective cover and the first shell.

The beneficial effects of the utility model are as follows: after the axial flow fan blade is selected by the vehicle-mounted axial flow blower, the vehicle-mounted axial flow blower has the advantages of obviously increased wind speed, smaller volume of required space and higher ventilation efficiency under the same condition. In addition, through making the adjustment to rotating assembly's structure, not only can utilize the rotation of first carousel and second carousel to be connected and realize turning to fast, can realize the mutually supporting of fixed subassembly and fixed orifices through pressing control handle moreover, realize the fixed connection of first carousel and second carousel then, restriction rotation angle for turn to blow simpler, convenient, the easy operation.

Drawings

Fig. 1 is a perspective view of a vehicle-mounted axial flow blower of the present utility model.

Fig. 2 is a partially exploded view of the in-vehicle axial flow blower of fig. 1.

Fig. 3 is an exploded view of the in-vehicle axial flow blower of fig. 2.

Fig. 4 is an exploded view of the housing assembly of fig. 2.

Fig. 5 is a perspective view of the blower assembly of fig. 2.

Fig. 6 is an exploded view of the blower assembly shown in fig. 5.

Fig. 7 is a cross-sectional view of the rotating assembly of fig. 2.

Fig. 8 is an exploded view of the rotating assembly of fig. 2.

Fig. 9 is an exploded view of fig. 8 with the control handle and control wires removed.

Fig. 10 is another view of fig. 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 3, the present utility model discloses a vehicle-mounted axial flow blower 100, which includes a housing assembly 10, a blower assembly connected to the housing assembly 10, and a rotating assembly 30, wherein the blower assembly includes an air inlet assembly 21, an air outlet assembly 23, and a duct assembly 22 connected between the air inlet assembly 21 and the air outlet assembly 23, and the rotating assembly 30 can drive the housing assembly 10 and the blower assembly to synchronously rotate, so as to blow in different directions.

Referring to fig. 4, the housing assembly 10 includes a first housing 11 and a second housing 12 assembled and fixed to each other, a control assembly 13 fixed to the outer side of the first housing 11, and a protective cover 14 covering the outer side of the control assembly 13, where an accommodating space 15 penetrating up and down is defined by the first housing 11 and the second housing 12 after the assembly is completed. The duct assembly 22 is accommodated in the accommodating space 15 and electrically connected to the control assembly 13, so that the control assembly 13 controls the duct assembly 22 to work.

The protective cover 14 is assembled and matched with the first shell 11, so that the control assembly 13 is limited between the protective cover 14 and the first shell 11. Specifically, an extension wall 111 is formed on the outer side wall of the first housing 11, the control assembly 13 is accommodated in a limiting cavity 112 defined by the extension wall 111, and the protection cover 14 and the extension wall 111 are fixed by riveting with screws, so as to further limit and fix the control assembly 13 in the limiting cavity 112. The control unit 13 may be a circuit board, or may be other structures, so long as the bypass unit 22 can be controlled to work normally, and the specific structure of the control unit 13 is not limited herein.

As shown in fig. 5 and 6 in combination with fig. 2 and 3, the air inlet assembly 21 includes an air inlet cover 211 and an air inlet pipe 212 connected to the air inlet cover 211, and an air inlet 213 is formed in the air inlet cover 211, so that an inner cavity of the air inlet pipe 212 can be communicated with the outside, thereby forming a complete air inlet channel. The air inlet cover 211 is assembled with one end of the first housing 11 and one end of the second housing 12, so as to close the accommodating space 15. "closed" as referred to herein means: the ducted assembly 22 is secured in the receiving space 15 without being affected by other components, nor is the operator able to extend his or her hand into the receiving space 15, rather than being "sealed".

The duct assembly 22 includes a duct motor 221, a guide cone 222 mounted in cooperation with one end of the duct motor 221, and an axial flow fan 223 mounted in cooperation with the other end of the duct motor 221, where in this embodiment, the duct motor 221 is a brushless motor. The air inlet pipe 212 is accommodated in the accommodating space 15 and is connected with the ducted motor 221, the axial flow fan blade 223 is disposed close to the air inlet pipe 212 and is fixed on a motor shaft of the ducted motor 221, when the ducted motor 221 is started, the axial flow fan blade 223 is driven to rotate, negative pressure is generated at the air inlet 213, external air is caused to enter the air inlet pipe 212 through the air inlet 213 and pass through the axial flow fan blade 223 to form a straight-through blowing mode, and finally flows out along the air outlet assembly 23 under the action of the guide cone 222.

In the present embodiment, the gap between the axial flow fan blade 223 and the inner wall surface of the duct motor 221 is very small, so that the kinetic energy generated when the axial flow fan blade 223 rotates can be converted into wind energy and can only pass through the axial flow fan blade 223, and the ventilation efficiency is very high.

Because the axial flow fan blade 223 is selected as the fan blade, a plurality of air outlet air channels are added to increase the blowing area in order to ensure that the wind speed and the wind quantity are relatively large. Preferably, two duct assemblies 22 are provided, and the air outlet assembly 23 includes two air outlet pipes 231 correspondingly connected to the two duct assemblies 22, and the air outlet pipes 231 are bent pipes.

In conclusion, through selecting the bypass motor 221 to use the brushless motor, simultaneously selecting the fan blade to use the axial flow fan blade 223, not only the ventilation efficiency is improved, the energy consumption is reduced, but also the volume is small, and the service life is long.

As shown in fig. 7 to 10 in combination with fig. 2 and 3, the rotating assembly 30 includes a control handle 31, a first rotating disc 32, a fixing assembly 33 disposed through the first rotating disc 32, a control wire 34 connecting the control handle 31 and the fixing assembly 33, and a second rotating disc 35 located below the first rotating disc 32, wherein one end of the first rotating disc 32 is fixedly connected with the housing assembly 10 and the blower assembly 20, and the other end is rotatably connected with the second rotating disc 35. Specifically, the first housing 11 and the second housing 12 are both fixed on the upper surface of the first rotating disk 32 and are disposed perpendicular to the first rotating disk 32, so that the duct assembly 22 is also disposed perpendicular to the first rotating disk 32; the first rotating disc 32 is provided with perforations 321 through which the two air outlet pipes 231 pass, and the two perforations 321 are close to one end of the first rotating disc 32 and are arranged side by side.

The second turntable 35 is provided with a plurality of fixing holes 351, and the control handle 31 is configured to: when the control handle 31 is pressed, the control wire 34 drives the fixing component 33 to be separated from the fixing hole 351; after the control handle 31 is released, the fixing component 33 drives the control wire 34 to automatically reset, and the fixing component 33 is reinserted into the fixing hole 351. Preferably, the plurality of fixing holes 351 are arranged in an arc shape on the second turntable 35 and are spaced from each other, and the distance between each fixing hole 351 and the rotation axis of the first turntable 32 is equal, so that the fixing assembly 33 can be inserted into different fixing holes 351 to fix the first turntable 32 after rotating relative to the second turntable 35. The specific structure of the rotating assembly 30, the rotating principle and the fixing principle will be described in detail below.

The rotating assembly 30 further comprises a holding rod 36, the control handle 31 is fixed on the top of the holding rod 36, and the control wire 34 passes through the holding rod 36 and is partially contained in the holding rod 36, so that the control wire 34 is convenient to manage. The top of the hand grip 36 is also provided with a hand grip 361, and the hand grip 361 is held by an operator to prevent slipping when the hand grip 36 is operated. The bottom end of the holding rod 36 is fixedly connected to the end of the first rotating disc 32 far away from the through hole 321, so that an operator can drive the first rotating disc 32 to rotate by controlling the holding rod 36.

The fixing assembly 33 includes a fixing base 331 fixedly connected to the first rotating disc 32, a fixing member 332 fixedly connected to the end of the control wire 34, and a spring 333 sleeved outside the fixing member 332, wherein the fixing member 332 passes through the fixing base 331 and the spring 333 is limited between the fixing member 332 and the fixing base 331. As such, upon pressing the control handle 31, the control wire 34 can pull the fixing piece 332 to move upward, so that the spring 333 is compressed until the fixing piece 332 is disengaged from the fixing hole 351; after releasing the control handle 31, the spring 333 urges the fixing piece 332 to move downward, so that the fixing piece 332 is reinserted into the fixing hole 351. The fixing member 332 is preferably a latch.

The first rotating disc 32 is further fixed with a limiting seat 322, and one end of the control wire 34 connected with the fixing piece 332 is accommodated in the limiting seat 322 and can move up and down in synchronization with the fixing piece 332 in the limiting seat 322. In this embodiment, the limiting seat 322 is U-shaped and is disposed on the first rotating disc 32, the fixing seat 331 passes through the first rotating disc 32 and the limiting seat 322 from the bottom of the first rotating disc 32, one end of the control wire 34 is limited in the limiting seat 322, and the design is as follows: better storage of the control wires 34 allows for a cleaner and more aesthetically pleasing overall appearance of the vehicle-mounted axial flow blower 100.

The bottom of the second turntable 32 is fixed with a vehicle-mounted bearing tube 37, and the vehicle-mounted bearing tube 37 is used for fixing the second turntable 32 with a vehicle, so as to fix the vehicle-mounted axial flow blower 100. The provision of the in-vehicle carrier tube 37 enables the in-vehicle axial flow blower 100 of the present utility model to be adapted to a wide variety of vehicles.

The rotating assembly 30 further comprises a bearing fixing post 352 fixed on the second turntable 35, a bearing and a locking member 355 sleeved on the bearing fixing post 352, and a bearing sleeve 323 fixed on the first turntable 32, wherein the bearing fixing post 352 and the bearing penetrate through the first turntable 32 and are accommodated in the bearing sleeve 323, so that the first turntable 32 can rotate relative to the second turntable 35. Specifically, the bearing includes a first bearing 353 and a second bearing 354 located above the first bearing 353, the first bearing 353 is sleeved on the bearing fixing post 352 and passes through the first rotating disc 32 together to be received at the bottom of the bearing sleeve 323, the second bearing 354 enters from the top of the bearing sleeve 323 and is sleeved on the bearing fixing post 352, the locking member 355 also enters from the top of the bearing sleeve 323 and is sleeved on the top of the bearing fixing post 352, and the locking member 355 is used for locking and fixing with the bearing fixing post 352, so as to connect the first rotating disc 32 and the second rotating disc 35.

A spring 356 may also be assembled over the second bearing 354 prior to assembly of the locking member 355, such that compression of the spring 356 by the locking member 355 may be utilized to stably mount the second bearing 354 within the bearing sleeve 323. In this embodiment, the locking member 355 is a nut, but not limited thereto. The top of the bearing sleeve 323 is also provided with a dust cap 357, which dust cap 357 is used to seal the inner cavity of the bearing sleeve 323 and prevent dust from entering the interior of the bearing sleeve 323.

As can be seen from fig. 9 and 10, on the one hand, the mounting position of the bearing sleeve 323 and the positions of the two through holes 321 just form a triangle, so that each structure on the first rotating disc 32 is better in stability, and the space utilization rate on the first rotating disc 32 is highest; on the other hand, the bearing sleeve 323 is disposed between the holding rod 36 and the limiting seat 322, so that not only is each structural arrangement on the first rotating disc 32 more compact, but also the distance between the bearing fixing column 352 and the holding rod 36 is the shortest, and an operator can conveniently control the first rotating disc 32 to rotate relative to the second rotating disc 35, and the operation is simpler and more labor-saving.

From the above, it can be seen that: the rotating assembly 30 of the present utility model utilizes the first bearing 353 and the second bearing 354 to connect the first turntable 32 and the second turntable 35, thereby functioning as a rotation; the control handle 31 is utilized to drive the control wire 34 and the fixing component 33 to pass through the first rotating disc 32 and reach the inside of the fixing hole 351 of the second rotating disc 35, thereby playing a role in fixing.

The installation process and the operation principle of the rotating assembly 30 will be described in detail below.

The rotating structure comprises: first, the first bearing 353 is fitted into the bearing fixing column 352 connected to the second turntable 35, and then the whole is connected into the bearing sleeve 323 of the first turntable 32 through the first bearing 353; then, the second bearing 354 is inserted into the bearing fixing post 352 from above the bearing sleeve 323 and is coupled inside the bearing sleeve 323; next, the second bearing 354 is fixedly locked by sleeving the elastic sheet 356 and the locking member 355, so that the first rotary table 32 is integrally connected with the second rotary table 35; finally, dust cap 357 is coupled to bearing sleeve 323 to prevent ingress of dust. The dual bearings are arranged such that the first turntable 32 is capable of 360 ° rotation relative to the second turntable 35.

The fixing structure comprises: the fixing piece 332 passes through the spring 333 and is pressed into the fixing seat 331, the tail end of the fixing piece 332 is connected with the control wire 34, the fixing seat 331 passes through the first rotating disc 32 and is fixed in the limiting seat 322, and the control handle 31 is sleeved into the hand holding rod 36 and is screwed and fixed through a screw. At this time, the control handle 31 is held to drive the control wire 34 to compress the spring 333, so that the fixing piece 332 moves upwards to be separated from the current fixing hole 351, and after the first rotating disc 32 completes the adjustment of the rotation angle, the control handle 31 is released to enable the fixing piece 332 to move downwards to the corresponding fixing hole 351 under the action of the spring 333, so as to fix the vehicle-mounted axial flow blower 100.

In summary, after the axial flow fan blade 223 is selected, the vehicle-mounted axial flow blower 100 of the present utility model has the advantages of significantly increasing the wind speed, smaller required space volume, and higher ventilation efficiency under the same condition compared with the centrifugal fan blade, and can increase the air output by simultaneously operating a plurality of air outlet components 23. In addition, through making the adjustment to the structure of rotating assembly 30, not only can utilize the rotation of first carousel 32 and second carousel 35 to be connected and realize turning to fast, can realize the mutually supporting of fixed subassembly 33 and a plurality of fixed orifices 351 through pressing control handle 31 moreover, realize the fixed connection of first carousel 32 and second carousel 35 then, restrict rotation angle for turn to blow simpler, convenience, the easy operation.

The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model.

Claims (14)

1. A vehicle-mounted axial flow blower, comprising:

a housing assembly;

the air blowing assembly comprises an air inlet assembly, an air outlet assembly and a duct assembly connected between the air inlet assembly and the air outlet assembly, the duct assembly comprises a duct motor, a guide cone and an axial flow fan blade, the guide cone is installed in a matched mode with one end of the duct motor, the axial flow fan blade is installed in a matched mode with the other end of the duct motor, and the duct motor is a brushless motor; and

the rotating assembly comprises a control handle, a first rotary table, a fixed assembly penetrating through the first rotary table, a control line connecting the control handle with the fixed assembly and a second rotary table located below the first rotary table, one end of the first rotary table is fixedly connected with the shell assembly and the blowing assembly, the other end of the first rotary table is rotationally connected with the second rotary table, a plurality of fixing holes are formed in the second rotary table, and the control handle is configured to: when the control handle is pressed, the control wire drives the fixing component to be separated from the fixing hole; after the control handle is released, the fixing component drives the control wire to automatically reset, and the fixing component is reinserted into the fixing hole.

2. The vehicle-mounted axial flow blower of claim 1, wherein: the fixing holes are arranged in an arc shape on the second turntable at intervals, and the distance between each fixing hole and the rotation axis of the first turntable is equal.

3. The vehicle-mounted axial flow blower of claim 1, wherein: the fixing assembly comprises a fixing seat fixedly connected with the first rotating disc, a fixing piece fixedly connected with the control line and a spring sleeved outside the fixing piece, and the fixing piece penetrates through the fixing seat and enables the spring to be limited between the fixing piece and the fixing seat.

4. A vehicle-mounted axial flow blower as in claim 3, wherein: when the control handle is pressed, the control wire pulls the fixing piece to move upwards, the spring is compressed, and the fixing piece is separated from the fixing hole; after the control handle is released, the spring pushes the fixing piece to move downwards, so that the fixing piece is reinserted into the fixing hole.

5. The vehicle-mounted axial flow blower of claim 4, wherein: and a limiting seat is also fixed on the first rotary table, and one end of the control wire connected with the fixing piece is accommodated in the limiting seat and can move up and down in synchronization with the fixing piece in the limiting seat.

6. The vehicle-mounted axial flow blower of claim 1, wherein: the rotating assembly further comprises a bearing fixing column fixed on the second turntable, a bearing sleeved on the bearing fixing column and a bearing sleeve fixed on the first turntable, wherein the bearing fixing column and the bearing penetrate through the first turntable and are contained in the bearing sleeve, so that the first turntable can rotate relative to the second turntable.

7. The vehicle-mounted axial flow blower of claim 6, wherein: the bearing comprises a first bearing and a second bearing arranged above the first bearing, wherein the first bearing is sleeved on the bearing fixing column and penetrates through the first rotary table together so as to be contained at the bottom of the bearing sleeve, and the second bearing enters from the top of the bearing sleeve and is sleeved on the bearing fixing column.

8. The vehicle-mounted axial flow blower of claim 7, wherein: the rotating assembly further comprises a locking piece, the locking piece enters from the top of the bearing sleeve and is sleeved at the top of the bearing fixing column, and the locking piece is fixedly locked with the bearing fixing column to connect the first rotary table and the second rotary table.

9. The vehicle-mounted axial flow blower of claim 1, wherein: the air inlet assembly comprises an air inlet and an air inlet pipe connected with the air inlet, the air inlet pipe is contained in the shell assembly and is connected with the duct motor, and the axial flow fan blade is arranged close to the air inlet pipe so as to drive external air to enter the air inlet pipe from the air inlet.

10. The vehicle-mounted axial flow blower of claim 9, wherein: the air inlet assembly further comprises an air inlet cover assembled and matched with the shell assembly, and the air inlet is formed in the air inlet cover.

11. The vehicle-mounted axial flow blower of claim 1, wherein: the duct assembly is provided with two, the air-out subassembly includes two air-out pipes that are connected with two duct assemblies respectively that correspond, offer the perforation that supplies two air-out pipes to pass on the first carousel.

12. The vehicle-mounted axial flow blower of claim 11, wherein: the air outlet pipe is an elbow pipe.

13. The vehicle-mounted axial flow blower of claim 1, wherein: the shell assembly comprises a first shell and a second shell which are mutually assembled and fixed, the first shell and the second shell are both fixed on the upper surface of the first rotary table, the duct assembly is contained in a containing space formed by surrounding the first shell and the second shell, and the duct assembly is perpendicular to the first rotary table.

14. The vehicle-mounted axial flow blower of claim 13, wherein: the shell assembly further comprises a control assembly fixed on the outer side of the first shell and a protective cover covering the outer side of the control assembly, and the protective cover is mutually assembled and matched with the first shell so as to limit the control assembly between the protective cover and the first shell.

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