Neck-hung fan

Abstract

The utility model belongs to the technical field of neck-hanging fans, and particularly relates to a neck-hanging fan. A neck-hanging fan comprises a neck-wearing frame, a fan body and a fan body, the fans are arranged in the two ends of the neck-wearing frame and communicate with the air inlets; the air duct pipe is arranged in the neck wearing frame and extends in the length direction of the neck wearing frame, the air duct pipe is connected with the fan and used for guiding air flow generated by the fan, and the lower end of the air duct pipe is provided with first lower air outlets which extend in the length direction of the air duct pipe or are arranged at intervals; the branch flow pipe is arranged at the upper end of the air duct pipe, the branch flow pipe communicates with the air duct pipe, and a first upper air outlet with an upward opening is formed in the upper end of the branch flow pipe; wherein a second lower air outlet and a second upper air outlet which correspond to the first lower air outlet and the first upper air outlet respectively are formed in the upper side and the lower side of the neck wearing frame respectively. The utility model has the advantages that the air can not only be blown to the area below the neck of a wearer, but also be blown to the head or face area of the wearer.

Description

Technical Field

[0001] This utility model belongs to the field of neck-hanging fan technology, and in particular relates to a neck-hanging fan. Background Technology

[0002] With the widespread use of portable electronic devices, the demand for personal cooling devices is increasing, especially in scenarios such as outdoor activities, sports, commuting, or office work, where users have a high demand for portable, efficient, and comfortable cooling devices. Neck fans, as a new type of personal cooling device, are gradually gaining market favor due to their portability and direct airflow characteristics.

[0003] However, existing neck fan designs have some limitations. For example, the air outlet of most neck fans is only located on the lower side of the device. For instance, Chinese patent application number 202220002933.4 discloses a new type of neck fan, in which the air outlet is only located on one side of the bracket. This results in a limited air delivery range, which can only blow air to the area below the wearer's neck and cannot cover the head or face. Utility Model Content

[0004] To address the shortcomings of existing technologies, a neck fan is provided that can blow air not only onto the area below the wearer's neck, but also onto the wearer's head or face.

[0005] This utility model is achieved using the following technical solution: a neck fan, comprising:

[0006] The neck brace has air inlets at both ends;

[0007] The fan is located inside both ends of the neck brace and is connected to the air inlet;

[0008] A duct, disposed within a neck brace and extending along the length of the neck brace, is connected to a fan and used to guide the airflow generated by the fan. The lower end of the duct has a first lower air outlet extending along its length or spaced apart.

[0009] A branch pipe is located at the upper end of the duct pipe and is connected to the duct pipe. The upper end of the branch pipe is provided with a first upper air outlet that opens upwards.

[0010] The neck brace has a second lower air outlet and a second upper air outlet on its upper and lower sides, respectively corresponding to the first lower air outlet and the first upper air outlet.

[0011] When in use, the air generated by the fan enters the air duct. Part of the air flows out from the first lower air outlet and blows towards the neck and below the body from the second lower air outlet. Another part of the air flows out from the first upper air outlet of the branch pipe and blows out from the second upper air outlet to blow towards the wearer's head or face.

[0012] Preferably, the branch pipe is located at one end of the air duct near the fan.

[0013] As airflow travels within the duct, the wind speed gradually decreases. To ensure a higher wind speed within the branch duct, it is positioned at the end of the duct closest to the fan. This design maximizes the wind speed within the branch duct, ensuring that the airflow from the first upper air inlet and the second upper air outlet has sufficient speed to effectively cover the wearer's head and face, achieving an ideal cooling effect.

[0014] Preferably, the internal diameter of the air duct gradually decreases from the side closer to the fan to the side farther away from the fan.

[0015] The diameter of the air duct gradually decreases from the side closer to the fan to the side farther away from the fan, which has the function of concentrating the air to ensure that the air discharged from the lower air outlet has a large wind speed.

[0016] Preferably, the air duct has a lower sidewall and an upper sidewall. The lower sidewall abuts against the lower inner wall of the neck brace. The upper sidewall is inclined and the distance between the upper sidewall and the lower sidewall gradually decreases from the side closer to the fan to the side farther from the fan, so that the internal diameter of the air duct gradually decreases from the side closer to the fan to the side farther from the fan.

[0017] Since the first lower air outlet extends along its length or is spaced out, it is relatively long and produces a lot of air. In order to ensure the air volume, the lower side wall abuts against the lower inner wall of the neck brace, so that the air flowing out of the first lower air outlet can immediately flow out through the second lower air outlet. At the same time, in order to make the internal diameter of the air duct gradually decrease from the side closer to the fan to the side farther away from the fan, the upper side wall is inclined to achieve the reduction of the diameter.

[0018] Preferably, the distance between the upper sidewall and the upper inner wall of the neck brace gradually increases from the side closer to the fan to the side farther from the fan to form a cavity, and the cavity contains a battery.

[0019] Because the distance between the upper sidewall and the upper inner wall of the neck brace gradually increases from the side closer to the fan to the side farther from the fan, the internal diameter of the air duct can gradually decrease from the side closer to the fan to the side farther from the fan. At this time, the battery can be placed in the cavity formed between the upper sidewall and the upper inner wall of the neck brace, which can make the internal structure of the neck brace more compact.

[0020] Preferably, the end face of the first upper air outlet of the branch pipe abuts against the upper inner wall of the neck brace.

[0021] The end face of the first upper air outlet abuts against the upper inner wall of the neck brace, ensuring that the air flowing out of the first upper air outlet can immediately flow out through the second upper air outlet.

[0022] Preferably, the branch pipe and the duct pipe are designed as a single piece, and the two are smoothly connected at the joint through a rounded corner transition structure.

[0023] The rounded corner transition design further avoids turbulence and energy loss at the connection point, ensuring that the airflow can smoothly enter the branch pipe, thereby improving the air velocity and uniformity of the outlet.

[0024] Preferably, the orifice diameter of the branch pipe gradually increases along the airflow direction.

[0025] The above settings can increase the area that the air from the branch pipe can cover when it is blown out.

[0026] Preferably, the branch pipe has a rear sidewall facing away from the fan side, the rear sidewall extending along the length of the duct pipe so that the diameter of the branch pipe gradually increases along the airflow direction.

[0027] The diameter of the branch pipe gradually increases along the airflow direction by extending the rear sidewall towards the length of the air duct.

[0028] Preferably, the lower end of the air duct is provided with an air outlet groove extending along its length, and the air outlet groove is provided with a number of spaced-apart guide vanes, which divide the air outlet groove into a number of spaced-apart first lower air outlets; the guide vanes are inclined and the angle between them and the horizontal plane is 55°-60°.

[0029] By tilting the air guide vanes, the air can be effectively directed, thus better directing it towards the human body. The optimal airflow angle is achieved when the air guide vanes are tilted at an angle of 55°-60° to the horizontal plane. Specifically, the upper end of the air guide vane is closer to the fan, while the lower end is further away from the fan. The horizontal plane is referenced to the horizontal plane of the neck brace when worn on the body.

[0030] Compared with existing technologies, this invention has the advantage of being able to blow air not only onto the area below the wearer's neck, but also onto the wearer's head or face. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the utility model;

[0032] Figure 2 for Figure 1A bottom view;

[0033] Figure 3 This is a structural diagram showing the structure when one side of the neck brace's housing is removed.

[0034] Figure 4 A schematic diagram of the structure of the air duct and one side shell of the neck brace after the battery has been removed;

[0035] Figure 5 for Figure 4 A schematic diagram of the structure after removing one side of the neck brace housing;

[0036] Figure 6 Cross-sectional views of the branch pipe, air duct, and neck brace;

[0037] Figure 7 This is a schematic diagram of the angle between the guide vane and the horizontal plane.

[0038] Reference numerals: 1. Neck brace; 11. Side shell; 12. Rear shell; 2. Air duct; 21. First lower air outlet; 22. Guide vane; 23. Upper side wall; 24. Lower side wall; 3. Branch pipe; 31. First upper air outlet; 32. Rear side wall; 4. Fan; 5. Air inlet; 51. Second upper air outlet; 52. Second lower air outlet; 53. Third lower air outlet; 6. Battery; 7. Cavity. Detailed Implementation

[0039] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0040] like Figure 1 and Figure 2 As shown, this embodiment discloses a neck fan, including a neck brace 1. The neck brace 1 includes side shells 11 forming the left and right sections of the neck brace 1 and a rear shell 12 forming the rear section of the neck brace 1. The two side shells 11 and the rear shell 12 are rotatably connected to accommodate different neck sizes of wearers. When worn, the side shells 11 are located on the left and right sides of the neck, and the rear shell 12 is located on the back of the neck.

[0041] like Figures 1 to 5 As shown, a duct 2 and a fan 4 are provided in the side housing 11. The fan in this embodiment is a conventional cylindrical fan, with the fan blades and motor located inside the cylinder shown in the figure. An air inlet 5 is provided at the end of the side housing 11, and the fan 4 is located at the end of the side housing 11 and communicates with the air inlet 5. In this embodiment, the duct 2 extends along the length of the side housing 11. The duct 2 is connected to the fan 4 and is used to guide the airflow generated by the fan 4. The lower end of the duct 2 is provided with a first lower air outlet 21 spaced along its own length.

[0042] like Figures 3 to 6As shown, the air duct 2 includes a lower sidewall 24 and an upper sidewall 23. The lower sidewall 24 abuts against the lower inner wall of the side housing 11 of the neck brace 1. The upper sidewall 23 is inclined, and the distance between the upper sidewall 23 and the lower sidewall 24 gradually decreases from the side closer to the fan 4 to the side farther away from the fan 4, so that the internal diameter of the air duct 2 gradually decreases from the side closer to the fan 4 to the side farther away from the fan 4. The distance between the upper sidewall 23 and the upper inner wall of the side housing 11 of the neck brace 1 gradually increases from the side closer to the fan 4 to the side farther away from the fan 4 to form a cavity 7, in which a battery 6 is disposed.

[0043] like Figures 3 to 6 As shown, the portion of the air duct 2 near the fan 4 is provided with a branch pipe 3. The branch pipe 3 is connected to the air duct 2 and the two are integrally formed. The branch pipe 3 and the air duct 2 are smoothly connected at the connection point by a rounded corner transition structure. The branch pipe 3 has a first upper air outlet 31 that opens upwards. The end face of the first upper air outlet 31 abuts against the upper inner wall of the side shell 11 of the neck brace 1. The branch pipe 3 has a rear side wall 32 that faces away from the fan 4. The rear side wall 32 extends along the length of the air duct 2 so that the diameter of the branch pipe 3 gradually increases along the airflow direction.

[0044] The side housing 11 has a second lower air outlet 52 and a second upper air outlet 51 on its upper and lower sides, respectively corresponding to the first lower air outlet 21 and the first upper air outlet 31. The lower side wall 24 of the duct pipe 2 abuts against the lower inner wall of the side housing 11, and the end face of the first upper air outlet 31 of the branch pipe 3 is on the upper inner wall of the side housing 11, thereby making the first lower air outlet 21 and the second lower air outlet 52, as well as the first upper air outlet 31 and the second upper air outlet 51, directly connected.

[0045] like Figure 6 and Figure 7 As shown, the lower end of the air duct 2 is provided with an air outlet groove extending along its length direction. The air outlet groove is provided with a number of spaced guide vanes 22, which divide the air outlet groove into a number of spaced first lower air outlets 21. The guide vanes 22 are inclined and the angle between them and the horizontal plane is α, where the angle of α is 55°-60°.

[0046] like Figure 1 and Figure 2 As shown, in this embodiment, the rear housing 12 is hollow to form a cavity, and the end of the air duct 2 along the airflow direction is aligned with the rear housing 12 so that air can also enter the rear housing 12. Furthermore, the lower end of the rear housing 12 is provided with a third lower air outlet 53 so that the air can be guided to the back of the neck.

[0047] In some other embodiments, the neck brace 1 may consist only of two side shells 11, which are rotatably connected to accommodate different neck sizes. When worn, the side shells 11 are located on the left and right sides of the neck and partially on the back of the neck. Furthermore, in other embodiments, the two side shells 11 and the back shell 12 of the neck brace 1 may be integrally molded and made of a material with good deformation properties to further enhance wearing comfort and adaptability.

Claims

1. A neck fan, characterized in that, The application relates to a neck-wearing frame, a fan, a wind channel pipe and a branch pipe. The neck-wearing frame is provided with air inlets at both ends. The fan is arranged inside the neck-wearing frame and communicates with the air inlets. The wind channel pipe is arranged in the neck-wearing frame and extends along the length direction of the neck-wearing frame. The wind channel pipe is connected with the fan and used for guiding the air flow generated by the fan. The lower end of the wind channel pipe is provided with first lower air outlets which extend along the length direction or are arranged at intervals.

2. The neck fan of claim 1, wherein: The branch pipe is arranged at the upper end of the wind channel pipe.

3. The neck fan of claim 1, wherein: The branch pipe communicates with the wind channel pipe.

4. The neck fan of claim 3, wherein: The upper end of the branch pipe is provided with a first upper air outlet which opens upward.

5. The neck fan of claim 4, wherein: The upper and lower sides of the neck-wearing frame are provided with second lower air outlets and second upper air outlets which correspond to the first lower air outlets and the first upper air outlet respectively.

6. The neck fan of any one of claims 1-5, wherein: The branch pipe is arranged at one end of the wind channel pipe which is close to the fan.

7. The neck fan of claim 6, wherein: The inner diameter of the wind channel pipe gradually decreases from the side close to the fan to the side far from the fan.

8. The neck fan of claim 6, wherein: The wind channel pipe is provided with a lower side wall and an upper side wall.

9. The neck fan of claim 8, wherein: The lower side wall abuts against the inner wall of the lower side of the neck-wearing frame.

10. The neck fan according to any one of claims 1-5, wherein: The upper side wall is arranged obliquely. The distance between the upper side wall and the lower side wall gradually decreases from the side close to the fan to the side far from the fan. The distance between the upper side wall and the inner wall of the upper side of the neck-wearing frame gradually increases from the side close to the fan to the side far from the fan to form a cavity. A battery is arranged in the cavity. The end surface of the first upper air outlet of the branch pipe abuts against the inner wall of the upper side of the neck-wearing frame. The branch pipe and the wind channel pipe are integrally formed. The connection part is smoothly connected through a round corner transition structure. The diameter of the branch pipe gradually increases along the air flow direction. The branch pipe has a rear side wall which extends along the length direction of the wind channel pipe. The lower end of the wind channel pipe is provided with an air outlet groove which extends along the length direction. The air outlet groove is provided with a plurality of guide vanes which are arranged at intervals. The guide vanes are arranged obliquely and the included angle between the guide vanes and the horizontal plane is 55-60 degrees.

Images