CN112343847A

CN112343847A - Backpack type blower

Info

Publication number: CN112343847A
Application number: CN202011285202.7A
Authority: CN
Inventors: 杨旭东; 上官云杰
Original assignee: Globe Jiangsu Co Ltd
Current assignee: Globe Jiangsu Co Ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-02-09

Abstract

The invention provides a backpack type hair drier which comprises a backpack assembly, an air inlet assembly fixedly assembled with the backpack assembly, an air outlet assembly connected with the air inlet assembly, a motor duct assembly and a motor duct assembly, wherein the air inlet assembly comprises an air inlet and an air inlet pipe connected with the air inlet, the air inlet pipe is connected with the air outlet assembly, and the motor duct assembly is accommodated in the air outlet assembly. Compared with the prior art, when air enters the backpack type hair drier, the air speed is reduced when the air passes through the bent pipe, noise is reduced, the air does not pass through the bent pipe when the air is blown, air is prevented from being discharged from the bent pipe, the air speed is reduced, and the air discharging efficiency is higher.

Description

Backpack type blower

Technical Field

The invention relates to a backpack type hair drier, and belongs to the technical field of hair dryers.

Background

In current backpack hair-dryer, motor, fan and PCB board all are located the below of knapsack, and each part is arranged compactly, is unfavorable for the heat dissipation to at backpack hair-dryer during operation, the air current that blows out need blow off by the blowing pipe through return bend and bellows, and wind speed and wind volume loss are great, and the noise is great.

In view of the above, it is necessary to adjust the structural layout of the conventional backpack hair dryer to solve the above problems.

Disclosure of Invention

The invention aims to provide a novel backpack type hair drier which not only can effectively reduce noise, but also has higher air outlet efficiency and small loss of air speed and air volume.

In order to achieve the purpose, the invention provides a backpack type hair drier which comprises a backpack assembly, an air inlet assembly and an air outlet assembly, wherein the air inlet assembly is assembled and fixed with the backpack assembly, the air outlet assembly is connected with the air inlet assembly, the air inlet assembly comprises an air inlet and an air inlet pipe connected with the air inlet, the air inlet pipe is connected with the air outlet assembly, the backpack type hair drier further comprises a motor duct assembly, and the motor duct assembly is accommodated in the air outlet assembly.

As a further improvement of the invention, the motor duct assembly comprises a duct main body, a motor fixed inside the duct main body, a flow guide cone installed in cooperation with one end of the duct main body, and a fan blade installed in cooperation with the other end of the duct main body, wherein the fan blade is fixed on a motor shaft of the motor.

As a further improvement of the invention, the air outlet assembly comprises a shell assembly, a corrugated pipe, an air outlet pipe fixedly connected with the corrugated pipe and a handle assembly arranged on the air outlet pipe, the shell assembly is connected with the air inlet pipe, and the corrugated pipe is connected with the shell assembly.

As a further improvement of the present invention, an inner tube is disposed in the housing assembly, a part of the motor duct assembly is accommodated in the inner tube, and another part of the motor duct assembly is accommodated in the bellows, one end of the duct main body, at which the fan blade is installed, is connected to the inner tube, the fan blade is disposed in the inner tube, and one end of the duct main body, at which the guide cone is installed, is disposed in the bellows.

As a further improvement of the present invention, the housing assembly covers the motor duct assembly and the outer side of the inner tube, the inner tube is bent, the housing assembly is correspondingly bent, and one end of the housing assembly is in threaded connection with the air inlet tube, and the other end of the housing assembly extends into the corrugated tube and is fixedly connected with the corrugated tube.

As a further improvement of the present invention, the motor duct assembly is accommodated in the air outlet pipe and located below the handle assembly, and the fan blade is disposed close to the bellows.

As a further improvement of the present invention, the air outlet pipe includes a first air outlet pipe and a second air outlet pipe which are assembled and matched with each other, the motor duct assembly is accommodated in an accommodating cavity defined by the first air outlet pipe and the second air outlet pipe, the handle assembly includes a first handle and a second handle which are assembled and matched with each other, the first handle is clamped on the first air outlet pipe, and the second handle is clamped on the second air outlet pipe.

As a further improvement of the invention, the air outlet assembly further comprises a blowpipe connected with the air outlet pipe, and the ratio of the sectional area of the free end of the blowpipe to the sectional area of the duct main body is less than 0.8; the sectional area of one end of the corrugated pipe close to the air outlet pipe is smaller than that of the other end of the corrugated pipe.

As a further improvement of the invention, the backpack type hair drier also comprises a power supply component for providing a power source for the motor duct component, and the power supply component is positioned above the air inlet component and is carried on the back of the human body through the backpack component.

As a further improvement of the invention, the noise reduction sponge is arranged on the inner side wall of the air inlet pipe to reduce the noise during air inlet; the power supply assembly comprises a battery pack and a circuit board located below the battery pack, radiating holes are formed in the top wall of the air inlet pipe and correspond to the circuit board, and heat generated in the working process of the circuit board is dissipated through the radiating holes.

The invention has the beneficial effects that: according to the backpack hair drier, the motor duct assembly is arranged in the air outlet assembly, so that air speed can be reduced when air enters the backpack hair drier through the bent pipe, noise is reduced, air cannot pass through the bent pipe when air blows, air outlet of the bent pipe is prevented from reducing the air speed, and the air outlet efficiency is higher.

Drawings

Figure 1 is a perspective view of a first embodiment of a piggyback blower of the present invention.

Figure 2 is a cross-sectional view of the backpack blower of figure 1.

Figure 3 is a partially exploded view of the piggyback blower of figure 1.

FIG. 4 is an exploded view of the piggyback assembly of FIG. 3.

Fig. 5 is an exploded view of the intake assembly of fig. 3.

Fig. 6 is an exploded view of the air outlet assembly in fig. 3.

Figure 7 is an exploded view of the motor duct assembly and housing assembly of figure 3.

Figure 8 is a perspective view of a second embodiment of a piggyback blower of the present invention.

Figure 9 is a cross-sectional view of the backpack blower of figure 8.

Figure 10 is an exploded view of the piggyback blower of figure 9.

Fig. 11 is an exploded view of the motor duct assembly and a portion of the outlet assembly of fig. 10.

Detailed Description

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

As shown in fig. 1 to 7, a backpack blower 100 according to a first embodiment of the present invention is shown. In this embodiment, the backpack blower 100 includes a backpack assembly 10, a power supply assembly 20 assembled in the backpack assembly 10, an air inlet assembly 30 assembled and fixed to the backpack assembly 10, and an air outlet assembly 40 connected to the air inlet assembly 30.

The backpack assembly 10 includes a back plate 11, a strap (not shown), a housing 12 assembled with the back plate 11, and a bracket 13 assembled with the back plate 11 to support the housing 12. The housing 12 is assembled and fixed to one side wall of the back plate 11, and the strap is disposed on the other side wall of the back plate 11, and when the strap is around the body of the operator, the other side wall of the back plate 11 is attached to the back of the operator. The cross section of the bracket 13 is substantially L-shaped, on one hand, the bracket is fixedly connected with the back plate 11, on the other hand, the bracket is used for supporting the machine shell 12 and the air inlet component 30, and when the backpack blower 100 is in a non-working state, the backpack blower 100 can be stably placed on the ground.

The housing 12 includes a first housing 121 and a second housing 122 assembled and fixed to each other, and the power module 20 is assembled in a receiving space (not numbered) defined by the first housing 121 and the second housing 122. The power supply assembly 20 is used for supplying power to a motor 52 which is described below, the power supply assembly 20 is carried on the back of a human body through the carrying assembly 10 and comprises a battery pack (not shown) and a circuit board 21 which is positioned below the battery pack, the circuit board 21 is electrically connected with the motor 52 and the battery pack, and electric energy output by the battery pack is transmitted to the circuit board 21 and then transmitted to the motor 52. A battery pack cavity 123 for accommodating a battery pack is formed in the second housing 122, and the battery pack is detachably inserted into the battery pack cavity 123 in a sliding manner. In this embodiment, two battery packs and two battery pack cavities 123 are provided, but this should not be taken as a limitation.

The air intake assembly 30 is disposed below the power module 20, and includes an air window 31 and an air inlet pipe 32 assembled and fixed with the air window 31. The air outlet assembly 40 includes an inner tube 33, and the inner tube 33 is mainly used for being butted with the air inlet pipe 32. The air window 31 is provided with a plurality of air inlets 311, and the air inlets 311 are communicated with the inner cavity of the air inlet pipe 32 and the inner cavity of the inner pipe 33 to form a complete air inlet channel. The inner tube 33 is curved. In this embodiment, the inner tube 33 is not in direct contact with the air inlet duct 32, and the inner tube 33 directly abuts against the inner side wall of the housing assembly 60 as described below.

In order to reduce noise during air intake, a noise reduction sponge (not shown) is disposed on the inner side wall of the air inlet pipe 32. The top wall of the air inlet pipe 32 is provided with heat dissipation holes 321, the heat dissipation holes 321 are arranged corresponding to the circuit board 21 to increase the air flow at the position of the circuit board 21, so that heat generated in the working process of the circuit board 21 can be dissipated through the heat dissipation holes 321, and the temperature of the circuit board 21 is reduced.

The backpack blower 100 further comprises a motor duct assembly 50, the motor duct assembly 50 is accommodated in the air outlet assembly 40 and extends in a direction away from the air inlet pipe 32, and a power source of the motor duct assembly 50 is provided by a power supply assembly 20. The motor duct assembly 50 comprises a duct main body 51, a motor 52 fixed inside the duct main body 51, a guide cone 53 installed in a matched manner with one end of the duct main body 51, and a fan blade 54 installed in a matched manner with the other end of the duct main body 51, wherein one end of the duct main body 51, on which the fan blade 54 is installed, is connected with the inner pipe 33, and the duct main body 51 extends towards the air outlet assembly 40, so that one end of the duct main body 51, on which the guide cone 53 is installed, is located in the air outlet assembly 40. The fan blades 54 are fixed on the motor shaft of the motor 52, so that when the motor 52 is started, the fan blades 54 are driven to rotate, negative pressure is generated at the air inlet 311, external air enters the air inlet pipe 32 through the air inlet 311, flows to the motor duct assembly 50 along the air inlet channel, and then flows out along the air outlet assembly 40 under the action of the diversion cone 53.

In this embodiment, assemble motor duct subassembly 50 in air-out subassembly 40 to when the air inlet, wind can reduce the wind speed behind crooked inner tube 33, is favorable to the noise reduction, compares in prior art with the hair-dryer of motor duct subassembly assembly in bearing the subassembly, and the air current can not pass through crooked inner tube 33 when blowing, has avoided the return bend air-out to reduce the wind speed, and the parameter is better like this, and efficiency is higher.

The air outlet assembly 40 further comprises a corrugated pipe 41 connected with the inner pipe 33, an air outlet pipe 42 fixedly connected with the corrugated pipe 41, a handle assembly 43 mounted on the air outlet pipe 42, and a blowing pipe 44 connected with the air outlet pipe 42, wherein the sectional area of one end, close to the air outlet pipe 42, of the corrugated pipe 41 is smaller than that of the other end of the corrugated pipe, so that a smaller air outlet area can be obtained, and the increase of the air speed is facilitated; the ratio of the sectional area of the free end of the blowpipe 44 to the sectional area of the bypass main body 51 is less than 0.8, so that the backpack type hair drier 100 can obtain a larger wind speed.

A part of the motor bypass assembly 50 is accommodated in the inner tube 33, and another part is accommodated in the corrugated tube 41, specifically, one end of the bypass main body 51, on which the fan blade 54 is installed, is connected to the inner tube 33, so that the fan blade 54 is disposed in the inner tube 33, and one end of the bypass main body 51, on which the guide cone 53 is installed, is disposed in the corrugated tube 41. The backpack blower 100 further comprises a shell assembly 60 covering the motor duct assembly 50 and the outer side of the inner tube 33, the inner tube 33 is arranged in a bent manner, the shell assembly 60 is arranged in a bent manner correspondingly, one end of the shell assembly 60 is in threaded connection with the air inlet pipe 32, and the other end of the shell assembly 60 extends into the corrugated pipe 41 and is fixedly connected with the corrugated pipe 41.

Specifically, the housing assembly 60 is composed of an upper housing 61 and a lower housing 62 assembled and engaged with each other in a vertical direction, and the motor bypass assembly 50 and the inner tube 33 are partially housed in a housing chamber defined by the upper housing 61 and the lower housing 62, and since the housing assembly 60 needs to completely cover the inner tube 33, both the upper housing 61 and the lower housing 62 need to be formed in a curved shape, and the size of the upper housing 61 and the lower housing 62 needs to be larger than that of the inner tube 33. In order to fixedly connect the air inlet assembly 30 with the air outlet assembly 40, external threads are arranged at one ends of the upper shell 61 and the lower shell 62 to be matched with the internal threads on the air inlet pipe 32, so that the shell assembly 60 and the air inlet assembly 30 are locked and fixed; the other ends of the upper casing 61 and the lower casing 62 are fixed to the corrugated pipe 41 in a clamping manner, so that the casing assembly 60 and the air outlet assembly 40 are locked and fixed. Of course, the manner of securing may be varied and will not be described in detail herein.

The handle assembly 43 is used for an operator to grasp and start the backpack blower 100, and the handle assembly 43 is connected with the power supply assembly 20 (specifically, the circuit board 21) through the control line 45, so that the normal start of the backpack blower 100 is realized. Because the specific structure of the handle assembly 43 and the connection relationship between the handle assembly 43 and the circuit board 21 can adopt the existing technical solutions, they are not described in detail here, and there is no limitation.

The blowpipe 44 is connected at the end of the air outlet pipe 42, and the inner cavity of the blowpipe 44 forms an air outlet channel for air outlet. In this embodiment, the blowing pipe 44 comprises two parts, and this two parts are assembled each other along upper and lower direction, on the one hand, can prolong the air-out passageway of blowing pipe 44 according to actual need, and on the other hand can dismantle and accomodate after the use is accomplished, and is very convenient. Of course, in other embodiments, the blowpipe 44 may be provided with only one portion, and the other portion may be eliminated, without limitation.

As shown in fig. 8 to 11, a backpack type hair dryer according to a second embodiment of the present invention is shown. In the second embodiment, the structure of the backpack blower 100' is substantially the same as that of the backpack blower 100, and the differences are mainly: in this embodiment, the motor bypass assembly 50 ' is accommodated in the air outlet pipe 42 ' and located below the handle assembly 43 ', and the fan blade 54 ' is disposed close to the bellows 41 '. In this way, in the operation process of the backpack blower 100 ', the air directly passes through the motor bypass assembly 50' and is blown out of the air outlet assembly 40 ', and does not pass through the corrugated pipe 41', so that the loss of the air speed and the air volume is smaller. The case when air is blown is the same as in the first embodiment, and will not be described here.

Specifically, the outlet duct 42 ' includes a first outlet duct 421 ' and a second outlet duct 422 ' assembled and engaged with each other in a left-right direction (i.e., a left-right direction in a normal operation, the same applies hereinafter), the motor duct assembly 50 ' is accommodated in an accommodating cavity defined by the first outlet duct 421 ' and the second outlet duct 422 ', the handle assembly 43 ' includes a first handle 431 ' and a second handle 432 ' assembled and engaged with each other in a left-right direction, the first handle 431 ' is engaged with the first outlet duct 421 ', and the second handle 432 ' is engaged with the second outlet duct 422 '. The outlet pipe 42 'is fixedly connected to one end of the bellows 41' through a connection ring 45 'and a clamp 46', the other end of the bellows 41 'is also connected to one end of the housing assembly 60 through the clamp 46', and the other end of the housing assembly 60 is directly connected to the inlet pipe 32 through a screw thread.

In addition, the inner tube 33 in the first embodiment is eliminated, and the housing assembly 60 is still disposed in a curved shape, so that the wind speed and noise can be reduced during the wind inlet process.

In summary, in the backpack blower 100, 100 ' of the present invention, the motor duct assemblies 50, 50 ' are disposed in the air outlet assemblies 40, 40 ' and away from the air inlet pipe 32, so that when air is introduced, the wind speed is reduced by the curved housing assembly 60, which is beneficial to reducing noise, and when air is blown, the wind does not pass through a bent pipe, which prevents the wind speed from being reduced by the wind discharged from the bent pipe, so that the air outlet efficiency is higher. Compared with the prior art, the backpack blower 100, 100' of the invention has the advantages of less air quantity and air speed loss and contribution to noise reduction in the working process.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a backpack hair-dryer, includes bears the subassembly, with bear the subassembly fixed air inlet subassembly of subassembly and the air-out subassembly that links to each other with the air inlet subassembly, the air inlet subassembly includes the air intake and the air-supply line that links to each other with the air intake, the air-supply line with the air-out subassembly links to each other, its characterized in that: the backpack type hair drier further comprises a motor duct assembly, and the motor duct assembly is accommodated in the air outlet assembly.

2. The backpack blower of claim 1 wherein: the motor duct assembly comprises a duct main body, a motor fixed inside the duct main body, a flow guide cone installed in a matched mode with one end of the duct main body, and a fan blade installed in a matched mode with the other end of the duct main body, and the fan blade is fixed on a motor shaft of the motor.

3. The backpack blower of claim 2 wherein: the air-out subassembly includes casing subassembly, bellows, with bellows fixed connection's play tuber pipe and install handle assembly on the play tuber pipe, casing subassembly with the air-supply line links to each other, the bellows with casing subassembly links to each other.

4. The backpack blower of claim 3 wherein: the motor ducted assembly is characterized in that an inner pipe is arranged in the shell assembly, one part of the motor ducted assembly is accommodated in the inner pipe, the other part of the motor ducted assembly is accommodated in the corrugated pipe, one end of the ducted main body, provided with fan blades, is connected with the inner pipe, the fan blades are arranged in the inner pipe, and one end of the ducted main body, provided with a flow guide cone, is arranged in the corrugated pipe.

5. The backpack blower of claim 4 wherein: the shell assembly covers the motor duct assembly and the outer side of the inner pipe, the inner pipe is arranged in a bent mode, the shell assembly is arranged in a bent mode correspondingly, one end of the shell assembly is connected with the air inlet pipe in a threaded mode, and the other end of the shell assembly extends into the corrugated pipe and is fixedly connected with the corrugated pipe.

6. The backpack blower of claim 3 wherein: the motor duct assembly is accommodated in the air outlet pipe and located below the handle assembly, and the fan blade is arranged close to the corrugated pipe.

7. The backpack blower of claim 6 wherein: the air outlet pipe comprises a first air outlet pipe and a second air outlet pipe which are assembled and matched with each other, the motor duct component is accommodated in an accommodating cavity formed by the first air outlet pipe and the second air outlet pipe in a surrounding mode, the handle component comprises a first handle and a second handle which are assembled and matched with each other, the first handle is clamped on the first air outlet pipe, and the second handle is clamped on the second air outlet pipe.

8. The backpack blower of claim 3 wherein: the air outlet assembly also comprises a blowing pipe connected with the air outlet pipe, and the ratio of the sectional area of the free end of the blowing pipe to the sectional area of the duct main body is less than 0.8; the sectional area of one end of the corrugated pipe close to the air outlet pipe is smaller than that of the other end of the corrugated pipe.

9. The backpack blower of claim 1 wherein: the backpack type hair drier also comprises a power supply component which provides a power source for the motor duct component, and the power supply component is positioned above the air inlet component and is carried on the back of the human body through the backpack component.

10. The backpack blower of claim 9 wherein: the inner side wall of the air inlet pipe is provided with a noise reduction sponge to reduce noise during air inlet; the power supply assembly comprises a battery pack and a circuit board located below the battery pack, radiating holes are formed in the top wall of the air inlet pipe and correspond to the circuit board, and heat generated in the working process of the circuit board is dissipated through the radiating holes.