Direct blowing type neck fan

Abstract

The utility model discloses a direct blowing type neck fan which comprises a support capable of being worn on the neck of a human body, the support is provided with a shell located on the two sides of the neck of the human body, an air channel and a fan assembly are arranged in the shell, an air inlet communicated with the air channel is formed in the shell, and an outer air guide plate and an inner air guide plate are arranged on the shell. The outer air guide plate and the inner air guide plate extend in the length direction of the shell, the inner air guide plate partially extends below the outer air guide plate, a space is kept between the outer air guide plate and the inner air guide plate to form an air guide gap, the air guide gap is communicated with the air channel, the side, away from the air channel, of the air guide gap is open to form an air outlet, and the air outlet faces the neck or the head of the human body. The air guide gap is used for guiding air to flow, so that air is directly blown to the neck or the head of a human body from the air outlet, and the air blowing effect is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to a direct blowing type neck fan technical field. BACKGROUND

[0002] The neck fan is a wearable blowing device on the neck of the user, which can move with the user and release the hands of the user, blows air to the face and neck of the user, and achieves the purpose of cooling and heat dissipation.

[0003] The neck fan generally comprises a bracket wearable on the neck, the bracket has two housings, each housing is provided with an air duct and a fan assembly, each housing is provided with an air inlet and an air outlet outside, the fan assembly sucks air from the air inlet and delivers it to the air duct, and finally blows it out from the air outlet. However, the air outlet of the conventional neck fan mainly adopts a vertical upward air outlet mode, which causes only part of the air blown out from the air outlet to blow to the neck or head of the user, and the blowing effect is poor. SUMMARY

[0004] The utility model provides a direct blowing type neck fan in view of the deficiency of prior art, which guides the air flow by using the air guide gap, so that the air is directly blown from the air outlet to the neck or head of the user, and the blowing effect is better.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A direct blowing type neck fan, comprising a bracket wearable on the neck of the user, the bracket has two housings located on both sides of the neck of the user, the housings are provided with an air duct and a fan assembly, the housings are provided with an air inlet communicated with the air duct, the housings are provided with an outer air guide plate and an inner air guide plate, the outer air guide plate and the inner air guide plate extend along the length direction of the housing, the inner air guide plate partially extends into the lower part of the outer air guide plate, the outer air guide plate and the inner air guide plate maintain a distance to form an air guide gap, the air guide gap is communicated with the air duct, the side of the air guide gap away from the air duct is open to form an air outlet, and the air outlet faces the neck or head of the user.

[0007] By setting the outer air guide plate and the inner air guide plate on the housing, the outer air guide plate and the inner air guide plate extend along the length direction of the housing, the inner air guide plate partially extends into the lower part of the outer air guide plate, the outer air guide plate and the inner air guide plate maintain a distance to form an air guide gap communicated with the air duct, the side of the air guide gap away from the air duct is open to form an air outlet facing the neck or head of the user, when in use, the fan assembly sucks air, the air passes through the air duct, the air guide gap and the air outlet in sequence, the air guide gap guides the air flow, so that the air is directly blown from the air outlet to the neck or head of the user, and the blowing effect is better.

[0008] As a preferred scheme, the outer air deflector and the inner air deflector are provided with air deflection surfaces on opposite sides, and the two air deflection surfaces enclose the air deflection gap.

[0009] As a preferred scheme, the air deflection surface is an arc surface or an inclined surface.

[0010] As a preferred scheme, the inner air deflector is provided with a chamfer on a side away from the air outlet.

[0011] As a preferred scheme, the air deflection gap has a width b of 1mm to 5mm.

[0012] As a preferred scheme, the air deflection gap has a depth h of 3mm to 10mm.

[0013] As a preferred scheme, the air deflection gaps on the two housings are communicated.

[0014] As a preferred scheme, a horn-shaped air collecting cavity is arranged between the fan assembly and the air duct, the larger end of the air collecting cavity is close to the fan assembly, and the smaller end of the air collecting cavity is communicated with the air duct.

[0015] As a preferred scheme, a flow guide plate is arranged in the housing, the flow guide plate has a first flow guide part and a second flow guide part distributed along the air flow direction, the first flow guide part and the inner wall of the housing enclose the air collecting cavity, and the second flow guide part, the outer air deflector and the inner air deflector enclose the air duct.

[0016] As a preferred scheme, the fan assembly is arranged between the air inlet and the air duct, and the fan assembly has an air guide cylinder, a first impeller, a second impeller and a motor, the first impeller is arranged at the input end of the air guide cylinder, the motor drives the first impeller to rotate, the second impeller is arranged at the output end of the air guide cylinder, and the first blades on the first impeller and the second blades on the second impeller have opposite spiral directions.

[0017] Compared with the prior art, the utility model has obvious advantages and beneficial effects, specifically, the outer air deflector and the inner air deflector are arranged on the housing, the outer air deflector and the inner air deflector extend along the length direction of the housing, the inner air deflector partially extends below the outer air deflector, a spacing is kept between the outer air deflector and the inner air deflector to form an air deflection gap communicated with the air duct, a side of the air deflection gap away from the air duct is open to form an air outlet towards the neck or head of a human body, in use, the fan assembly inhales air, the air passes through the air duct, the air deflection gap and the air outlet in sequence, the air deflection gap is used to guide the air flow, and the air directly blows to the neck or head of the human body from the air outlet, so that the blowing effect is better.

[0018] In order to more clearly set forth the structural features, technical means and the specific purposes and functions reached by the present application, the present application will be further described in detail below in conjunction with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the assembly structure schematic diagram of the embodiment of the present application;

[0020] Figure 2 is the first top view schematic diagram of the embodiment of the present application;

[0021] Figure 3 is Figure 2 the cross-sectional schematic diagram of A-A in the above;

[0022] Figure 4 is the internal structure schematic diagram of the embodiment of the present application;

[0023] Figure 5 is the second top view schematic diagram of the embodiment of the present application;

[0024] Figure 6 is Figure 5 the cross-sectional schematic diagram of B-B in the above;

[0025] Figure 7 is the fan assembly assembly schematic diagram of the embodiment of the present application;

[0026] Figure 8 is the fan assembly exploded schematic diagram of the embodiment of the present application.

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] 10 - support, 11 - shell, 12 - air duct, 14 - air inlet, 15 - outer air deflector, 151 - air deflection surface, 16 - inner air deflector, 17 - air deflection gap, 171 - air outlet, 18 - air gathering cavity, 19 - guide plate, 191 - first guide part, 192 - second guide part, 20 - fan assembly, 21 - air deflector, 22 - first impeller, 221 - first blade, 23 - second impeller, 231 - second blade, 232 - first ventilation hole, 24 - air deflector cover, 241 - second ventilation hole. DETAILED DESCRIPTION

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated position or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application.

[0030] In the description of the utility model, it is to explain, unless otherwise definite and limited, the term '' install '' '' link '' '' connect '' should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through the intermediate medium, can be the intercommunication of two elements. For ordinary skilled in the art, the above-mentioned term can be understood according to the specific meaning in the utility model.

[0031] As Figures 1-8 The utility model discloses a direct blowing neck fan, including the support 10 that can be worn on the neck of human body, the support 10 has the shell 11 located human body neck both sides, the shell 11 is equipped with air duct 12 and fan assembly 20, the extension end on the shell 11 is equipped with the air inlet 14 that communicates with air duct 12.

[0032] The shell 11 is equipped with outer air deflector 15 and inner air deflector 16, the outer air deflector 15 and inner air deflector 16 all extend along the length direction of shell 11, the inner air deflector 16 part extends into the below of outer air deflector 15, the outer air deflector 15 and inner air deflector 16 keep the spacing and form the air deflection gap 17 between, the air deflection gap 17 communicates with air duct 12, the side of the air deflection gap 17 away from air duct 12 is open and forms the air outlet 171, and the air outlet 171 is towards the neck or head of human body.

[0033] The opposite side of outer air deflector 15 and inner air deflector 16 is equipped with air deflector face 151, and the air deflector face 151 surrounds the air deflection gap 17;Through the setting air deflector face 151, the air in the air deflection gap 17 flows more smoothly using the guiding effect of air deflector face 151, and then the wind that the air outlet 171 blows is more uniform, and the blowing effect is better.

[0034] The air deflector face 151 is arc surface or inclined surface.

[0035] The side of inner air deflector 16 away from the air outlet 171 is equipped with chamfer, and the chamfer is rounded corner or bevel angle;Through the setting chamfer, the air in the air duct 12 flows to the process in the air deflection gap 17 more smoothly, reduces wind resistance.

[0036] The width b of the air guiding gap 17 is 1mm-5mm, preferably, the width b of the air guiding gap 17 is 1.5mm-3mm, it is pointed out that the width b of the air guiding gap 17 is defined as the distance between the side of the outer air guiding plate 15 far from the inner air guiding plate 16 and the side of the inner air guiding plate 16 facing the outer air guiding plate 15; by setting the width b of the air guiding gap 17 to be 1mm-5mm, the air guiding gap 17 is in a long and narrow structure, and the air outlet speed is high.

[0037] The depth h of the air guiding gap 17 is 3mm-10mm, preferably, the depth h of the air guiding gap 17 is 4mm-6mm, it is pointed out that the depth of the air guiding gap 17 is defined as the distance between the side of the outer air guiding plate 15 close to the air outlet 171 and the side of the inner air guiding plate 16 far from the air outlet 171; by setting the depth h of the air guiding gap 17 to be 3mm-10mm, the air flows in the air guiding gap 17 for a certain distance to form a stable fluid, and then is blown out from the air outlet 171, and the blowing effect is better.

[0038] The air guiding gaps 17 on the two housings 11 are communicated; by setting the air guiding gaps 17 on the two housings 11 to be communicated, an air guiding gap 17 around the left and right sides and the back of the human neck is formed, the blowing coverage area is large, and the blowing effect is good.

[0039] The horn-shaped air collecting cavity 18 is arranged between the fan assembly 20 and the air duct 12, one end of the air collecting cavity 18 close to the fan assembly 20, and the other end of the air collecting cavity 18 is communicated with the air duct 12; by setting the horn-shaped air collecting cavity 18, the air is pressurized by the air collecting cavity 18 and then is delivered into the air duct 12, the air outlet speed and the air outlet volume of the air guiding gap 17 are improved.

[0040] The flow guide plate 19 is arranged in the housing 11, the flow guide plate 19 has the first flow guide part 191 and the second flow guide part 192 distributed along the air flow direction, the first flow guide part 191 and the inner wall of the housing 11 enclose the air collecting cavity 18, and the second flow guide part 192, the outer air guiding plate 15 and the inner air guiding plate 16 enclose the air duct 12.

[0041] The fan assembly 20 is arranged between the air inlet 14 and the air duct 12, the fan assembly 20 has a duct 21, a first impeller 22, a second impeller 23 and a motor, the first impeller 22 is arranged at the input end of the duct 21, the motor drives the first impeller 22 to rotate, the second impeller 23 is arranged at the output end of the duct 21, the first blades 221 on the first impeller 22 and the second blades 231 on the second impeller 23 are opposite in spiral direction, and a first air vent 232 communicating with the air duct 31 is formed between two adjacent second blades 231; by arranging the second blades 231 and the first blades 221 opposite in spiral direction, the second blades 231 can prevent the air in the air duct from flowing back to the duct, thereby enhancing the pressure of the air entering the air duct 31 and improving the blowing effect.

[0042] The second blades 231 extend counterclockwise towards the first impeller 22, and the first blades 221 extend clockwise away from the second impeller 23, and it can be understood that the second blades 231 can also be arranged clockwise towards the first impeller 22, and the first blades 221 are correspondingly arranged clockwise away from the second impeller 23.

[0043] The second impeller 23 is provided with a wind deflector 24 on the side close to the air duct 12, a plurality of second air vents 241 are arranged on the wind deflector 24 in a ring shape, and the first air vent 232, the second air vent 241, the air collecting cavity 18 and the air duct 31 are sequentially communicated; by arranging the wind deflector 24, the air is uniformly dispersed and output through the second air vents 241 on the wind deflector 24.

[0044] The motor is a high-speed motor, and the rotating speed of the high-speed motor is more than 6000 revolutions per minute; by adopting the high-speed motor, the high-speed motor drives the impeller 132 to rotate to provide high-pressure airflow for the air duct 12, the high-pressure airflow is sprayed out of the narrow air deflection gap 17, drives the air around the air outlet 171 to flow, and improves the blowing effect.

[0045] In summary, the utility model discloses an outer air deflector 15 and an inner air deflector 16 are arranged on the shell 11, the outer air deflector 15 and the inner air deflector 16 extend along the length direction of the shell 11, the inner air deflector 16 partially extends below the outer air deflector 15, a spacing is kept between the outer air deflector 15 and the inner air deflector 16 to form an air deflection gap 17 communicating with the air duct 12, the air deflection gap 17 is open on the side away from the air duct 12 to form an air outlet 171 towards the neck or head of a human body, when in use, the fan assembly 20 inhales air, the air sequentially passes through the air duct 12, the air deflection gap 17 and the air outlet 171, the air deflection gap 17 is used to guide the air flow, and the air directly blows to the neck or head of a human body from the air outlet 171, so that the blowing effect is better.

[0046] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and thus any modification, equivalent replacement, improvement, etc. made to the above embodiments according to the technical spirit of the present application still falls within the scope of the technical scheme of the present application.

Claims

1. A direct-blowing neck fan, comprising a bracket wearable on a person's neck, the bracket having a housing positioned on both sides of the person's neck, an air duct and a fan assembly disposed within the housing, and an air inlet connected to the air duct disposed on the housing, characterized in that: The shell is provided with an outer wind guide plate and an inner wind guide plate, and the outer wind guide plate and the inner wind guide plate both extend along the length direction of the shell, and the inner wind guide plate partially extends under the outer wind guide plate. A distance is maintained between the outer wind guide plate and the inner wind guide plate to form an wind guide gap, and the wind guide gap is connected to the air duct. The side of the wind guide gap away from the air duct is open to form an air outlet, and the air outlet is directed towards the neck or head of the human body.

2. The direct-blowing neck fan according to claim 1, characterized in that: The outer air guide plate and the inner air guide plate are both provided with air guide surfaces on opposite sides thereof, and the two air guide surfaces enclose the air guide gap.

3. The direct-blowing neck fan according to claim 2, characterized in that: The wind guide surface is a curved surface or an inclined surface.

4. The direct-blowing neck fan according to claim 1, characterized in that: A chamfer is provided on one side of the inner air guide plate away from the air outlet.

5. The direct-blowing neck fan according to claim 1, characterized in that: The width b of the air guide gap is 1 mm to 5 mm.

6. The direct-blowing neck fan according to claim 1, characterized in that: The depth h of the air guide gap is 3 mm to 10 mm.

7. The direct-blowing neck fan according to claim 1, characterized in that: The air guide gaps on the two shells are connected.

8. The direct-blowing neck fan according to claim 1, characterized in that: A trumpet-shaped air collecting cavity is provided between the fan assembly and the air duct, wherein a larger end of the air collecting cavity is close to the fan assembly, and a smaller end of the air collecting cavity is communicated with the air duct.

9. The direct-blowing neck fan according to claim 8, characterized in that: A guide plate is provided in the shell, and the guide plate has a first guide part and a second guide part distributed along the air flow direction. The first guide part and the inner wall of the shell form the wind gathering cavity, and the second guide part, the outer guide plate and the inner guide plate form the air duct.

10. The direct-blowing neck fan according to any one of claims 1 to 9, characterized in that: The fan assembly is arranged between the air inlet and the air duct. The fan assembly has an air guide tube, a first impeller, a second impeller and a motor. The first impeller is arranged at the input end of the air guide tube. The motor drives the first impeller to rotate. The second impeller is arranged at the output end of the air guide tube. The spiral direction of the first blade on the first impeller is opposite to that of the second blade on the second impeller.

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