Backpack type hair dryer

Abstract

The utility model discloses a backpack type hair drier, which belongs to the field of hair driers, solves the problem that the bending of a corrugated pipe interferes with the inlet air of the hair drier, and adopts the technical scheme that the backpack type hair drier mainly comprises a backpack type power supply device, a blowing device and a connecting device for connecting the backpack type power supply device with the blowing device, the air blowing device is provided with an airflow channel, the connecting device comprises a flexible pipe, an air inlet communicated with the airflow channel is formed in the joint of the air blowing device and the flexible pipe, and an air outlet communicated with the airflow channel is formed in the end, away from the flexible pipe, of the air blowing device. The utility model is mainly used for effectively reducing the interference on the air inlet of the blower and ensuring the air outlet efficiency of the blower.

Description

Technical Field

[0001] The utility model relates to the field of hair dryers, in particular to a backpack hair dryer. Background Art

[0002] In the prior art, in order to increase the flexibility of use of a backpack hair dryer, the utility model patent CN213808160U discloses a backpack hair dryer, including a motor duct assembly, a backpack assembly, an air inlet assembly assembled and fixed with the backpack assembly, and an air outlet assembly connected to the air inlet assembly, the air inlet assembly including an air inlet and an air inlet pipe connected to the air inlet, the air outlet assembly including a shell assembly, a bellows, and an air outlet pipe fixedly connected to the bellows, the fan blades are located in the shell assembly, the shell assembly is connected to the air inlet pipe, the bellows is connected to the shell assembly, the air outlet pipe is rotatable by rotating the bellows, but the air input from the air inlet needs to pass through the entire bellows, when the bellows is bent, the resistance of the air passing through is greatly increased, thereby affecting the air outlet efficiency of the hair dryer. Utility Model Content

[0003] The purpose to be achieved by the utility model is to provide a backpack hair dryer, which overcomes the problem in the prior art that the bending of the bellows interferes with the air intake of the hair dryer, effectively reduces the interference with the air intake of the hair dryer, and ensures the air outlet efficiency of the hair dryer.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a backpack hair dryer, comprising a backpack power supply device, a blowing device and a connecting device connecting the backpack power supply device and the blowing device, the connecting device comprising a flexible tube, the blowing device is provided with an air flow channel, the connection between the blowing device and the flexible tube is provided with an air inlet connected to the air flow channel, and the end of the blowing device away from the flexible tube is provided with an air outlet connected to the air flow channel.

[0005] After adopting the above technical scheme, the utility model has the following advantages: the backpack power supply device is connected to the blowing device through a flexible tube, so as to ensure the flexibility of use of the blowing device, and the external air enters the air flow channel through the air inlet and is output from the air outlet, wherein the air outlet is arranged at the connection between the blowing device and the flexible tube at the end of the blowing device away from the flexible tube, so that the air input from the air inlet does not need to pass through the entire corrugated tube, thereby reducing the resistance to the air when the flexible tube is bent, effectively reducing the interference with the air intake of the hair dryer, and ensuring the air outlet efficiency of the hair dryer.

[0006] Furthermore, the flexible tube includes a first section and a second section located downstream of the first section, the second section is connected to the blowing device, and the circumferential side wall of the second section is provided with a first opening, and the first opening serves as an air inlet. With the above technical solution, the external air enters the second section through the first opening and then directly enters the blowing device, reducing the path of the air in the flexible tube, thereby reducing the resistance of the flexible tube to the air when it is bent, effectively reducing the interference with the air intake of the hair dryer, and ensuring the air outlet efficiency of the hair dryer.

[0007] Furthermore, the length of the second section is not greater than that of the first section. By adopting the above technical solution, the length of the second section is shortened, so that when the length of the second section is shorter, it is not easy to bend, and the path of the air in the flexible tube can be reduced. If the length of the second section is greater than the length of the first section, the longer the length of the second section is, the easier it is to bend, thereby interfering with the air intake, and also increasing the path of the air in the flexible tube.

[0008] Furthermore, a fan and a motor for driving the fan to rotate are provided in the air flow channel, and the fan is arranged close to the air inlet. With the above technical solution, the fan is closer to the air inlet and has a smaller loss, the hair dryer has a higher working efficiency, and can obtain a larger air volume under the same power, while reducing the noise of the hair dryer.

[0009] Furthermore, the connection device also includes a connection piece, the flexible tube is connected to the blowing device via the connection piece, the connection piece is formed with a second opening, and the second opening serves as an air inlet. With the aforementioned technical solution, the flexible tube is connected to the blowing device via the connection piece, the connection piece is formed with a second opening, and the second opening serves as an air inlet, so that external air directly enters the air inlet without passing through the flexible piece, effectively avoiding interference with the air intake when the flexible tube is bent, and ensuring the air outlet efficiency of the hair dryer. Because the flexible piece has no effect on the air outlet efficiency of the hair dryer, a longer flexible piece can be selected, further improving the flexibility of use of the hair dryer.

[0010] Furthermore, the connecting member includes a plurality of connecting ribs spaced apart along the circumferential direction of the central axis of the air inlet, and the gap between two adjacent connecting ribs forms the second opening. Through the above technical solution, a plurality of connecting ribs are spaced apart along the circumferential direction of the central axis of the air inlet, so that the air intake of the second opening is more uniform, thereby reducing the fluctuation of the airflow at the air inlet and reducing noise.

[0011] Furthermore, the second openings are provided with a plurality of them, the cross-sections of the plurality of connecting ribs and the cross-sections of the plurality of second openings form a circle, and the sum of the arc lengths of the plurality of connecting ribs on the circumference is less than the arc length occupied by the plurality of second openings on the circumference. Through the above technical solution, the sum of the arc lengths of the plurality of connecting ribs on the circumference is less than the arc length occupied by the plurality of second openings on the circumference, thereby ensuring the air inlet area of ​​the second opening, thereby ensuring the air inlet volume, and increasing the air outlet volume of the hair dryer.

[0012] Furthermore, the maximum diameter of the connecting piece is not less than the maximum outer diameter of the blowing device. Through the above technical solution, the diameter of the air inlet is made larger, so as to allow as much external air as possible to enter the blowing device. If the maximum diameter of the connecting piece is less than the maximum outer diameter of the blowing device, the diameter of the air inlet is smaller, the air intake is smaller, and the blowing amount of the blowing device is affected.

[0013] Furthermore, a fan and a motor for driving the fan to rotate are provided in the air flow channel, and the fan is arranged close to the air inlet. Through the above technical solution, the fan is closer to the air inlet and has a smaller loss, the hair dryer has a higher working efficiency, can obtain a larger air volume under the same power, and can reduce the noise of the hair dryer.

[0014] Furthermore, the air inlet is arranged at one end where the blowing device is connected to the flexible tube. Through the above technical solution, the air inlet does not pass through the connecting device, effectively avoiding interference with the air intake when the flexible tube of the connecting device is bent, ensuring the air outlet efficiency of the hair dryer, and also making the air inlet closer to the air outlet, reducing energy loss and ensuring the air outlet effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] Figure 1 This is a schematic structural diagram of a backpack hair dryer in Embodiment 1 of the present utility model;

[0017] Figure 2 It is a cross-sectional view of a backpack hair dryer in Embodiment 1 of the present utility model;

[0018] Figure 3 In the first embodiment of the present utility model Figure 2 A magnified view of the structure at A;

[0019] Figure 4 An exploded view of a backpack hair dryer in Embodiment 1 of the present utility model;

[0020] Figure 5 This is a schematic structural diagram of a backpack hair dryer in Embodiment 2 of the present utility model;

[0021] Figure 6It is a cross-sectional view of a backpack hair dryer in Embodiment 2 of the present utility model;

[0022] Figure 7 In the second embodiment of the present utility model Figure 6 A magnified view of the structure at B;

[0023] Figure 8 It is an exploded view of a backpack hair dryer in the second embodiment of the present utility model;

[0024] Fig. 9 This is a schematic structural diagram of a backpack hair dryer according to an implementation method in Example 2 of the utility model;

[0025] Fig.10 In the second embodiment of the present utility model Fig. 9 Cross-sectional view at SS;

[0026] Fig.11 This is a schematic structural diagram of a backpack hair dryer according to another implementation method in Example 2 of the utility model;

[0027] Fig.12 In the second embodiment of the present utility model Fig.11 Cross-sectional view at SS;

[0028] In the figure, 10, backpack; 11, connecting handle; 20, flexible tube; 201, first section; 202, second section; 203, first opening; 31, connecting ribs; 32, second opening; 40, air duct; 401, air flow channel; 402, air inlet; 403, air outlet; 404, motor; 405, motor fan; 406, axial fan; 4061, wheel hub; 4062, fan blades; 4063, wind guide cone; 407, protective cover; 41, handle. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0030] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein.

[0031] It should be understood that in various embodiments of the present invention, the size of the serial number of each process does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0032] It should be understood that in the present invention, "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0033] It should be understood that in the present utility model, "plurality" refers to two or more than two. "And / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, X and / or Y can represent: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "Contains X, Y and Z", "Contains X, Y, Z" means that X, Y, and Z are all included, "Contains X, Y or Z" means that one of X, Y, and Z is included, and "Contains X, Y and / or Z" means that any one, any two, or any three of X, Y, and Z are included.

[0034] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0035] Embodiment 1:

[0036] like Figures 1 to 4 As shown, the utility model provides a backpack hair dryer, including a backpack power supply device, a blowing device and a connecting device connecting the backpack power supply device and the blowing device, the connecting device includes a flexible tube 20, the blowing device is provided with an air flow channel 401, an air inlet 402 connected to the air flow channel 401 is provided at the connection between the blowing device and the flexible tube 20, and an air outlet 403 connected to the air flow channel 401 is provided at one end of the blowing device away from the flexible tube 20.

[0037] With such a design, the backpack power supply device is connected to the blowing device through the flexible tube 20, thereby ensuring the flexibility of use of the blowing device. External air enters the air flow channel 401 through the air inlet 402 and is output from the air outlet 403, wherein the air inlet 402 is arranged at the connection between the blowing device and the flexible tube 20, and the air outlet 403 is arranged at the end of the blowing device away from the flexible tube 20, so that the air input by the air inlet 402 does not need to pass through the entire flexible tube 20, thereby reducing the resistance to the air when the flexible tube 20 is bent, effectively reducing the interference with the air intake of the hair dryer, and ensuring the air outlet efficiency of the hair dryer.

[0038] It should be noted that an air inlet 403 connected to the air flow channel 401 is provided at the connection between the blowing device and the flexible tube 20: in the first embodiment, the air inlet 403 can be set on the flexible tube 20, in the second embodiment, the air inlet 403 can be set between the blowing device and the flexible tube 20, and of course, in the third embodiment, the air inlet 403 can be set on the blowing device.

[0039] The blowing device includes an air duct 40, in which a fan and a motor 404 for driving the fan to rotate are arranged. The backpack power supply device includes a backpack 10, a battery arranged in the backpack 10, and a connecting handle 11 arranged on the backpack 10. The flexible tube 20 is connected to the backpack battery pack through the connecting handle 11. The battery and the motor 404 are connected through a power cord. The power cord at one end of the battery is connected to the motor 404 after extending through the flexible tube 20, so as to realize the hidden installation of the power cord and reduce the entanglement of the power cord. In addition, the flexible tube 20 is made of insulating material, which further improves the insulation of the power cord and improves the safety of use. In addition, the air inlet 402 is provided with a protective cover 407 for intercepting large particles of impurities from entering the air flow channel 401. The air duct 40 is provided with a handle 41 that is easy to grasp. The fan is arranged near the air inlet 402. Since the fan is close to the air inlet 402, the loss is small. The hair dryer has a higher working efficiency. Under the same power, a larger air volume can be obtained, and the noise of the hair dryer can be reduced.

[0040] It is understandable that the power line can also be directly connected to the motor 404 without passing through the flexible tube 20, so that the power line can be visualized.

[0041] It should be noted that the flexible tube 20 may be a corrugated tube, but is not limited thereto.

[0042] Specifically, the flexible tube 20 includes a first section 201 and a second section 202 located downstream of the first section 201, the second section 202 is connected to the blowing device, and the circumferential side wall opening of the second section 202 is provided with a first opening 203, and the first opening 203 serves as an air inlet 402. With such a design, the external air enters the second section 202 through the first opening 203 and then directly enters the blowing device, reducing the path of the air in the flexible tube 20, thereby reducing the resistance of the flexible tube 20 to the air when it is bent, effectively reducing the interference with the air intake of the hair dryer, and ensuring the air outlet efficiency of the hair dryer.

[0043] It should be noted that the second section 202 is the connection between the blowing device and the flexible tube 20 .

[0044] It should be noted that the side wall of the first section 201 is closed, and a threading hole is provided at the end of the first section 201 for the power line to pass through.

[0045] It is understandable that in other embodiments, the fan and the motor 404 may also be disposed in the second section.

[0046] Since the second section 202 is also a flexible tube 20, the longer the second section 202 is, the easier it is to bend, thereby interfering with the incoming air and also increasing the path of the air in the flexible tube 20. For this reason, preferably, the length of the second section 202 is not greater than the length of the first section 201. With such a design, the length of the second section 202 is shortened, so that the second section 202 is less likely to bend when the length is shorter, and the path of the air in the flexible tube 20 can also be reduced.

[0047] Since the greater the distance between the fan and the air inlet 402, the greater the airflow path, the greater the energy loss, therefore, preferably, the fan is arranged close to the air inlet 402. With such a design, the fan is closer to the air inlet 402 and the loss is smaller, the hair dryer has a higher working efficiency, can obtain a larger air volume under the same power, and can reduce the noise of the hair dryer.

[0048] It should be noted that the fan includes a motor fan 405 located on the shaft of the motor 404 at one end of the motor 404 close to the air inlet 402 and an axial flow fan 406 located on the shaft of the motor 404 at one end of the motor 404 close to the air outlet 403. The axial flow fan 406 includes a hub 4061, fan blades 4062 and an air guide cone 4063. The fan blades 4062 are circumferentially arranged along the side of the hub 4061, and the air guide cone 4063 is arranged on the hub 4061. The radial width of the air guide cone 4063 gradually decreases from the end close to the fan blades 4062 to the end away from the fan blades 4062 and close to the air outlet 403, so as to guide the airflow in the airflow channel 401 to the air outlet 403, reduce airflow fluctuations, and reduce noise generation.

[0049] Embodiment 2:

[0050] like Figures 5 to 12 As shown, in this embodiment, the connection device also includes a connection piece, and the flexible tube 20 is connected to the blowing device through the connection piece, and the connection piece is formed with a second opening 32, and the second opening 32 serves as the air inlet 402. In this design, the flexible tube 20 is connected to the blowing device through the connection piece, and the connection piece is formed with a second opening 32, and the second opening 32 serves as the air inlet 402, so that the external air directly enters the air inlet 402 without passing through the flexible piece, effectively avoiding interference with the air intake when the flexible tube 20 is bent, and ensuring the air outlet efficiency of the hair dryer. Because the flexible piece has no effect on the air outlet efficiency of the hair dryer, a longer flexible piece can be selected to further improve the flexibility of the hair dryer.

[0051] It should be noted that the connecting piece is the connection between the blowing device and the flexible tube 20 .

[0052] It should be noted that the flexible tube 20 may be a hollow structure or a solid structure, and is not limited thereto.

[0053] Specifically, the connecting member includes a plurality of connecting ribs 31 spaced apart along the circumferential direction of the central axis of the air inlet 402, and the gap between two adjacent connecting ribs 31 forms a second opening 32. With such a design, a plurality of connecting ribs 31 are spaced apart along the circumferential direction of the central axis of the air inlet 402, so that the air intake of the second opening 32 is more uniform, thereby reducing the fluctuation of the airflow at the air inlet 402 and reducing noise.

[0054] In order to ensure the air intake, the second openings 32 are provided in plurality, and the cross-sections of the plurality of connecting ribs 31 and the cross-sections of the plurality of second openings 32 form a circle, and the sum of the arc lengths of the plurality of connecting ribs 31 on the circumference is less than the arc lengths of the plurality of second openings 32 on the circumference. With such a design, the sum of the arc lengths of the plurality of connecting ribs 31 is less than the arc lengths of the plurality of second openings 32, thereby ensuring the air intake area of ​​the second openings 32, thereby ensuring the air intake and increasing the air output of the hair dryer.

[0055] like Fig. 9 and Fig.10 As shown, when there are three connecting ribs 31 and three second openings 32, the total arc lengths of the connecting ribs 31 include A1+A2+A3, the total arc lengths of the second openings 32 include B1+B2+B3, and A1+A2+A3<B1+B2+B3.

[0056] like Fig.11 and Fig.12 As shown, when there are six connecting ribs 31 and six second openings 32, the total arc lengths of the connecting ribs 31 include A1+A2+A3+A4+A5+A6, and the total arc lengths of the second openings 32 include B1+B2+B3+B4+B5+B6, and A1+A2+A3+A4+A5+A6 is less than B1+B2+B3+B4+B5+B6.

[0057] It can be understood that the connecting ribs 31 can be provided in any suitable number, such as two, four, or five.

[0058] It is understandable that the second openings 32 may also be provided with two, four, five or other suitable numbers.

[0059] It should be noted that the connecting ribs 31 can be arranged at equal intervals so that the air intake of each second opening 32 is the same, and the connecting ribs 31 can also be arranged at different intervals so that the sizes of each second opening 32 are different.

[0060] In order to reduce the interference of the connecting piece on the air intake, the maximum diameter of the connecting piece is not less than the maximum outer diameter of the blowing device. With this design, the diameter of the air inlet is larger, and as much external air as possible enters the blowing device. If the maximum diameter of the connecting piece is smaller than the maximum outer diameter of the blowing device, the diameter of the air inlet is smaller, the air intake is smaller, and the air volume of the blowing device is affected. Among them, the maximum diameter of the connecting piece is marked as D2 in the figure, and the diameter of the blowing device is marked as D1 in the figure.

[0061] Since the greater the distance between the fan and the air inlet 402, the greater the airflow path, the greater the energy loss, therefore, preferably, the fan is arranged close to the air inlet 402. With such a design, the fan is closer to the air inlet 402 and the loss is smaller, the hair dryer has a higher working efficiency, can obtain a larger air volume under the same power, and can reduce the noise of the hair dryer.

[0062] Embodiment three:

[0063] In this embodiment, the air inlet is arranged at one end where the blowing device is connected to the flexible tube. With this design, the air inlet does not pass through the connecting device, effectively avoiding interference with the air inlet when the flexible tube of the connecting device is bent, thereby ensuring the air outlet efficiency of the hair dryer, and also making the air inlet closer to the air outlet, thereby reducing energy loss and ensuring the air outlet effect.

[0064] It should be noted that the end where the blowing device is connected to the connecting device is the connection point between the blowing device and the connecting device.

[0065] In addition to the above-mentioned preferred embodiments, the present invention also has other implementation modes. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A backpack hair dryer, comprising a backpack power supply device, a blowing device and a connecting device connecting the backpack power supply device and the blowing device, wherein the blowing device is provided with an air flow channel, characterized in that: The connecting device includes a flexible tube, and an air inlet connected to the air flow channel and used to directly inhale external air is provided at the connection between the blowing device and the flexible tube. An air outlet connected to the air flow channel is provided at one end of the blowing device away from the flexible tube, so that the air input from the air inlet does not need to pass through the entire flexible tube.

2. The backpack hair dryer according to claim 1, characterized in that: The flexible tube comprises a first section and a second section located downstream of the first section, the second section is connected to the blowing device, a circumferential side wall of the second section is provided with a first opening, and the first opening is configured as an air inlet.

3. The backpack hair dryer according to claim 2, characterized in that: The length of the second section is no greater than the length of the first section.

4. The backpack hair dryer according to claim 2, characterized in that: The blowing device is provided with a fan and a motor for driving the fan to rotate, and the fan is arranged close to the air inlet.

5. The backpack hair dryer according to claim 1, characterized in that: The connecting device further comprises a connecting piece, the flexible tube is connected to the blowing device via the connecting piece, the connecting piece is formed with a second opening, and the second opening serves as an air inlet.

6. The backpack hair dryer according to claim 5, characterized in that: The connecting member includes a plurality of connecting ribs arranged at intervals in the circumferential direction of the central axis of the blowing device, and the gap between two adjacent connecting ribs forms the second opening.

7. The backpack hair dryer according to claim 6, characterized in that: There are multiple second openings, and the cross-sections of the multiple connecting ribs and the cross-sections of the multiple second openings form a circle. The total arc length of the multiple connecting ribs on the circumference is smaller than the arc length of the multiple second openings on the circumference.

8. The backpack hair dryer according to claim 7, characterized in that: The maximum outer diameter of the connecting piece is not less than the maximum outer diameter of the blowing device.

9. The backpack hair dryer according to claim 5, characterized in that: The blowing device is provided with a fan and a motor for driving the fan to rotate, and the fan is arranged close to the air inlet.

10. The backpack hair dryer according to claim 1, characterized in that: The air inlet is arranged at one end where the blowing device is connected to the flexible tube.

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