CN221142628U

CN221142628U - Heat radiation structure of knapsack type hair dryer

Info

Publication number: CN221142628U
Application number: CN202322344641.6U
Authority: CN
Inventors: 付立林; 程蓓; 翁武汉
Original assignee: Ningbo Cheery Garden Tools Co ltd
Current assignee: Ningbo Cheery Garden Tools Co ltd
Priority date: 2023-08-30
Filing date: 2023-08-30
Publication date: 2024-06-14
Anticipated expiration: 2033-08-30

Abstract

The utility model discloses a heat radiation structure of a backpack blower, which comprises a blower assembly, wherein the blower assembly comprises a blower assembly and a wind pipe, a shell is sleeved on the peripheral side of one end of the wind pipe, the blower assembly is positioned in the wind pipe, one end of the wind pipe is a main air outlet, the other end of the wind pipe is a main air inlet, a motor controller is arranged between the shell and the blower pipe, a secondary air inlet is formed in the side wall of the shell, and a secondary air outlet is formed in the side wall of the wind pipe. The utility model has the effect of improving the heat dissipation efficiency of the motor controller.

Description

Heat radiation structure of knapsack type hair dryer

Technical Field

The application relates to the technical field of blowers, in particular to a heat dissipation structure of a backpack blower.

Background

The backpack type blower is mainly used for garden maintenance work, can quickly clean fallen leaves, sand, and other garbage, is provided with an independent backpack type battery, has long endurance time, and is suitable for outdoor long-time operation.

The utility model discloses a fan device, which has the application number 201520752164X in the prior art, and comprises: a housing formed with an air duct; the fan is arranged in the air duct; the motor is used for driving the fan to rotate around the pivot axis; the housing forms or is connected with: an operation handle for operating the fan device; the operating handle is arranged at the outer side of the air duct; also disclosed is a backpack blower system, comprising in addition to the above blower apparatus: the backpack is used for being carried by a user; the connecting device is used for transmitting acting force between the fan device and the knapsack device; wherein the connection means are connected to the carrying equipment and the fan device, respectively.

According to the prior art, after the fan in the air duct works, negative pressure is formed in the air inlet area of the air duct by one of the heat dissipation windows, so that external wind enters from the other heat dissipation window and flows out from the heat dissipation window close to the air inlet of the air duct, heat of the circuit board in the accommodating cavity can be taken away when the wind flows from the two heat dissipation windows, but the air inlet of the air duct is away from the fan in the air duct by a certain distance, so that wind intensity generated in the accommodating cavity is smaller, and the heat dissipation effect of the circuit board is lower.

Disclosure of utility model

The utility model aims to overcome the defects and shortcomings of the prior art and provide a heat dissipation structure of a backpack blower.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

Including the subassembly of blowing, the subassembly of blowing includes fan subassembly and tuber pipe, the week side cover of tuber pipe one end is equipped with the shell, fan subassembly is located inside the tuber pipe, the one end of tuber pipe is main gas outlet, and the other end is main air inlet, the shell with be formed with the holding chamber that is used for holding motor controller between the tuber pipe, motor controller with fan subassembly electric connection, the auxiliary air inlet has been seted up to the lateral wall of shell, the auxiliary air outlet has been seted up to the lateral wall of tuber pipe, the auxiliary air inlet the auxiliary air outlet all communicates with the holding chamber, the auxiliary air outlet is close to main air inlet.

Through adopting above-mentioned technical scheme, when fan subassembly in the tuber pipe works, because the distance between vice gas outlet and the flabellum of fan subassembly is nearer to produce great negative pressure, external wind gets into from vice air inlet afterwards, flows from vice gas outlet, and the wind-force that forms between shell and the tuber pipe is great, thereby can take away more heat in the motor controller, has improved motor controller's radiating efficiency.

Preferably, one end of the main air inlet is covered with a cover net.

Through adopting above-mentioned technical scheme, when the hair-dryer works, outside air gets into in the gas blowing pipe from the air inlet, and the lid net can prevent that external material from getting into in the shell, has improved the stability of hair-dryer.

Preferably, the auxiliary air inlet and the auxiliary air outlet are arranged oppositely, and the motor controller is positioned between the auxiliary air inlet and the auxiliary air outlet.

By adopting the technical scheme, the motor controller is positioned between the auxiliary air inlet and the auxiliary air outlet, so that flowing wind can smoothly take away heat of the motor controller.

Preferably, the air pipe comprises an air inlet part, a hose and a straight pipe, the fan assembly is located in the air inlet part, one end of the hose is arranged at one end of the air inlet part, and one end of the straight pipe is arranged at one end of the hose far away from the air inlet part.

Through adopting above-mentioned technical scheme, when the tuber pipe blows to appointed region, hold the straight tube and can be to appointed region, and the hose can change the direction of straight tube, has improved the scope of blowing of hair-dryer.

Preferably, the straight pipe comprises an inner pipe, an outer pipe and at least more than one connecting pipe, the connecting pipe is located between the inner pipe and the outer pipe, one end of the inner pipe is arranged at one end of the hose, which is far away from the outer shell, a clamping block is arranged on the side wall of one end of the inner pipe, which is far away from the side wall of one end of the hose, a clamping groove for clamping and fixing the clamping block is formed in the side wall of one end of the outer pipe, and the clamping block is arranged on the side wall of one end of the connecting pipe, and the clamping groove is formed in the side wall of the other end of the connecting pipe.

Through adopting above-mentioned technical scheme, when installing the straight tube, insert the one end of hose with the one end of inner tube, later put the one end of connecting pipe in the other end of inner tube for the fixture block card is in the draw-in groove, lets inner tube and connecting pipe be connected fixedly, later put the one end of outer tube in the one end of connecting pipe at keeping away from the inner tube, under the mutual joint of fixture block and draw-in groove, let outer tube and connecting pipe be connected fixedly, when needs extend the straight tube, can increase the installation quantity of connecting pipe, thereby change the length of straight tube, improved the multifunctionality of hair-dryer.

Preferably, a fixing ring is sleeved on the peripheral side of the connecting pipe, and a driving grip is arranged on the outer side wall of the fixing ring.

By adopting the technical scheme, when the driving handle is installed, the fixing ring is sleeved on the periphery of the connecting pipe, and then when the straight pipe is driven, the straight pipe can be driven only by holding the driving handle, so that the convenience of driving the straight pipe is improved.

Preferably, the outer side wall of the connecting pipe is provided with a limit strip along the length direction of the connecting pipe, and the inner side wall of the fixing ring is provided with a limit groove for the limit strip to be inserted and slipped.

By adopting the technical scheme, the driving handle can only move forwards and backwards under the action of the limiting groove, so that the driving handle cannot rotate, and the stability of the driving handle is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The distance between the auxiliary air outlet and the fan blade of the fan is relatively short, so that relatively large negative pressure is generated, then external wind enters from the auxiliary air inlet and flows out from the auxiliary air outlet, and wind force formed between the shell and the air pipe is relatively large, so that relatively much heat in the motor controller can be taken away, and the heat dissipation efficiency of the motor controller is improved;

2. The motor controller is positioned between the auxiliary air inlet and the auxiliary air outlet, so that flowing wind can smoothly take away heat of the motor controller;

3. The one end with the one end of inner tube inserts the one end of hose, later put the one end of connecting pipe in the other end of inner tube for the fixture block card is in the draw-in groove, lets inner tube and connecting pipe be connected fixedly, later put the one end of outer tube in the one end of connecting pipe in keeping away from the inner tube, under the mutual joint of fixture block and draw-in groove, let outer tube and connecting pipe connection fixedly, when needs extend the straight tube, can increase the installation quantity of connecting pipe, thereby change the length of straight tube, improved the multifunctionality of hair-dryer.

Drawings

Fig. 1 is a schematic view of the structure of the blower of the present utility model;

FIG. 2 is a schematic cross-sectional view of a fan assembly of the present utility model;

FIG. 3 is an exploded view of the fan assembly of the present utility model;

fig. 4 is an exploded view of the ductwork of the present utility model.

In the figure: 1. a backpack; 2. a blowing assembly; 3. a fan assembly; 4. an air duct; 5. a housing; 6. a blower; 7. a motor frame; 8. an air guide pipe; 9. covering a net; 10. a motor controller; 11. an auxiliary air inlet; 12. a hose; 13. a straight pipe; 14. an inner tube; 15. a connecting pipe; 16. an outer tube; 17. a clamping block; 18. a clamping groove; 19. a fixing ring; 20. driving the grip; 21. a limit bar; 22. a limit groove; 23. a secondary air outlet; 24. a main air outlet; 25. a primary air inlet; 26. an air inlet part.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

The embodiment of the application discloses a heat radiation structure of a backpack blower.

Referring to fig. 1, the backpack comprises a backpack 1 and a blowing component 2, wherein the blowing component 2 comprises a fan component 3 and an air pipe 4, the fan component 3 is positioned inside the air pipe 4, one end of the air pipe 4 is a main air outlet 24, and the other end of the air pipe is a main air inlet 25.

Referring to fig. 2 and 3, fan assembly 3 includes fan 6 and motor frame 7, and fan 6 installs and is fixed in the inside of motor frame 7, and motor frame 7's one end butt has guide duct 8, and motor frame 7 is equipped with shell 5 with guide duct 8's periphery side cover, and motor frame 7 passes through the bolt fastening in shell 5, and four vice gas outlets 23 have been seted up to guide duct 8's lateral wall, and guide duct 8 is provided with the ring in the periphery side of keeping away from motor frame 7 one end an organic whole, and the ring passes through the one end of bolt fastening in shell 5, and guide duct 8 is kept away from motor frame 7's one end has placed lid net 9, and lid net 9 is located the outer end of shell 5 air intake, passes lid net 9 and guide duct 8 is fixed in the outside of motor frame 7 one end through the bolt.

The outer side wall of the air guide pipe 8 is fixedly provided with a motor controller 10 through bolts, the motor controller 10 is positioned between the air guide pipe 8 and the shell 5, the motor controller 10 is fixedly arranged on the outer side wall of the air guide pipe 8 through bolts, the side wall of the shell 5 is provided with a secondary air inlet 11 corresponding to the motor controller 10, and the motor controller 10 is positioned between the secondary air inlet 11 and the secondary air outlet 23.

Referring to fig. 4, the air duct 4 is composed of an air inlet portion 26, a hose 12 and a straight tube 13, the hose 12 is located between the air inlet portion 26 and the straight tube 13, the straight tube 13 comprises an inner tube 14, an outer tube 16 and two connecting tubes 15, one end of the hose 12 is clamped and fixed with the inner circumference side of one end of the outer shell 5 far away from the cover net 9, one end of the inner tube 14 is fixed with the hose 12 at one end far away from the outer shell 5 through a clamp, the two connecting tubes 15 are located between the inner tube 14 and the outer tube 16, a clamping block 17 is integrally arranged on the side wall of one end far away from the hose 12 of the inner tube 14, a clamping groove 18 for clamping and fixing the clamping block 17 is formed on the side wall of one end of the outer tube 16, the clamping block 17 is integrally arranged on the side wall of one end of the connecting tube 15, and the clamping groove 18 is formed on the side wall of the other end of the connecting tube 15.

The periphery of connecting pipe 15 is overlapped and is equipped with solid fixed ring 19, and gu fixed ring 19's lateral wall is provided with drive handle 20 an organic whole, and connecting pipe 15's lateral wall is provided with spacing 21 an organic whole along connecting pipe 15's length direction, and gu fixed ring 19's inside wall has seted up the spacing groove 22 that supplies spacing 21 grafting to slide.

The embodiment of the application discloses a heat dissipation structure of a backpack blower 6, which is implemented by the following principles:

When the blower 6 works, the backpack 1 is carried on the back of a worker, the driving handle 20 is held by a hand to lift the straight pipe 13, then the blower 6 works under the control of the motor controller 10, external wind enters the housing 5 from the air inlet of the housing 5, then sequentially passes through the hose 12 and the straight pipe 13, finally is blown out from the outer end of the outer pipe 16, and meanwhile, the external wind can also perform heat dissipation treatment on the motor controller 10 through the auxiliary air inlet 11.

The foregoing description is only of the preferred embodiments of the utility model, and all changes and modifications that come within the meaning and range of equivalency of the structures, features and principles of the utility model are therefore intended to be embraced therein.

Claims

1. The utility model provides a heat radiation structure of knapsack formula hair-dryer, includes blast assembly (2), its characterized in that: the utility model provides a fan assembly (2) is including fan assembly (3) and tuber pipe (4), the week side cover of tuber pipe (4) one end is equipped with shell (5), fan assembly (3) are located inside tuber pipe (4), the one end of tuber pipe (4) is main gas outlet (24), and the other end is main air inlet (25), shell (5) with be formed with the holding chamber that is used for holding motor controller (10) between tuber pipe (4), motor controller (10) with fan assembly (3) electric connection, auxiliary air inlet (11) have been seted up to the lateral wall of shell (5), auxiliary air outlet (23) have been seted up to the lateral wall of tuber pipe (4), auxiliary air inlet (11) auxiliary air outlet (23) all communicate with the holding chamber, auxiliary air outlet (23) are close to main air inlet (25).

2. A heat dissipating structure of a backpack blower according to claim 1, wherein one end of the main air inlet (25) is covered with a cover net (9).

3. A heat dissipating structure of a backpack blower according to claim 1, wherein the secondary air inlet (11) is disposed opposite to the secondary air outlet (23), and the motor controller (10) is disposed between the secondary air inlet (11) and the secondary air outlet (23).

4. The heat radiation structure of a backpack blower according to claim 1, wherein the air duct (4) comprises an air inlet portion (26), a hose (12) and a straight tube (13), the blower assembly (3) is located in the air inlet portion (26), one end of the hose (12) is disposed at one end of the air inlet portion (26), and one end of the straight tube (13) is disposed at one end of the hose (12) away from the air inlet portion (26).

5. The heat radiation structure of a backpack blower according to claim 4, wherein the straight tube (13) comprises an inner tube (14), an outer tube (16) and at least more than one connecting tube (15), the connecting tube (15) is located between the inner tube (14) and the outer tube (16), one end of the inner tube (14) is arranged at one end of the hose (12) far away from the outer shell (5), a clamping block (17) is arranged at a side wall of one end of the inner tube (14) far away from the hose (12), a clamping groove (18) for clamping and fixing the clamping block (17) is arranged at a side wall of one end of the outer tube (16), the clamping block (17) is arranged at a side wall of one end of the connecting tube (15), and the clamping groove (18) is arranged at a side wall of the other end of the connecting tube (15).

6. The heat radiation structure of a backpack blower according to claim 5, wherein a fixing ring (19) is sleeved on the peripheral side of the connecting tube (15), and a driving grip (20) is arranged on the outer side wall of the fixing ring (19).

7. The heat radiation structure of a backpack blower according to claim 6, wherein the outer side wall of the connecting pipe (15) is provided with a limit bar (21) along the length direction of the connecting pipe (15), and the inner side wall of the fixing ring (19) is provided with a limit groove (22) for inserting and sliding the limit bar (21).