High-speed air-intake pressurized fan

Abstract

Provide a high-speed air-intake pressurized fan. 【Solution means】It includes a housing 4 with an air passage provided inside, a motor base is provided on the axis of the air passage, the upper wall surface of the circumferential wall surface of the motor base extends radially outward to form a wind guiding vane 42, the wind guiding vane includes a parallel part and a twisted wind cut part, the parallel part is provided close to the exhaust port, the parallel part is provided parallel to the axis of the exhaust port, the twisted wind cut part is provided close to the intake port, the twisted wind cut part is provided offset from the plane where the parallel part is located, and its extending surface intersects with the axial direction of the blower blade group 5. The exhaust port is covered with a wind-collecting cover 1 whose inner diameter gradually decreases from the intake port to the exhaust port. The combined cooperation of the blower blade group, the wind guiding vane, the pressurizing surface and the wind-collecting cover not only greatly improves the wind speed and the blowing distance, but also achieves the effects of quietness and noise reduction.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and specifically, it is a high-speed air-collecting and pressurizing fan.

Background Art

[0002] When going out in summer or engaging in activities outdoors, the temperature is relatively high, and there may be no air conditioner. In order to stay cool at all times, portable fans have emerged. Portable fans are easy to carry and can be used at any time, so they are very popular.

[0003] However, due to its small volume, the electrical components installed in it can only use relatively small power. Therefore, in conventional portable fans, the wind force cannot be designed to be large, and its fan effect and cooling sensation are low. Although there are manufacturers that apply the structure of conventional booster fans to such small portable fans to increase the wind speed and improve the cooling effect (for example, Chinese Patent (Authorized Publication Number: CN217029352U)), the problem of turbulent flow of the wind flow is not considered. Therefore, the noise during the operation of conventional portable fans is very large, which has a serious impact on the user experience of consumers and is disadvantageous to the popularization and application of products.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The object of the present invention is to provide a high-speed air-collecting and pressurizing fan. The high-speed air-collecting and pressurizing fan pressurizes the air flow through the combined cooperation of the air-sending blade group, the air-guiding blade, the pressurizing surface and the air-collecting cover, increases the speed, removes the turbulent flow, reduces the noise, and then blows it outwards. This not only greatly improves the wind speed and the air-sending distance, but also achieves the effects of silent operation and noise reduction, and solves the problems in the above background art.

Means for Solving the Problems

[0005] To achieve the above object, the present invention provides the following technical means. The high-speed air-collecting and pressurizing fan includes a housing with an air passage provided inside. A motor base is provided on the axis of the air passage, and a blower blade group is provided on the motor base. An air inlet and an air outlet are respectively provided at both ends of the air passage. The air passage is provided in communication with the air inlet and the air outlet. The blower blade group guides the air at the air inlet so that it blows outwards from the air outlet after flowing into the air passage. The upper wall surface of the circumferential wall surface of the motor base extends radially outwards to form a guiding blade. The guiding blade is located on the side facing the air outlet of the blower blade group. The guiding blade includes a parallel part and a twisted air-cutting part. The parallel part is provided close to the air outlet and is provided parallel to the axis of the air outlet. The twisted air-cutting part is provided close to the air inlet and is provided offset from the plane where the parallel part is located, and its extending surface is provided intersecting the axial direction of the blower blade group. The air outlet is covered with an air-collecting cover, and the inner diameter of the air-collecting cover gradually decreases from the air inlet to the air outlet.

[0006] Preferably, the twisted air-cutting part is a curved surface. The extending surface of the curved surface intersects the axis of the blower blade group. The inner surface of the curved surface is an air-receiving surface. The blower blade group includes a rotating base and blower blades uniformly arranged on the outer circumferential wall surface of the rotating base. The surface of the blower blade on the side facing the air outlet is a blowing surface. The curved surface where the air-receiving surface is located is provided intersecting the curved surface where the blowing surface is located, and the air-receiving surface and the blowing surface form an angle less than 90°.

[0007] Preferably, the angle between the air-receiving surface and the central axis of the blower blade group is 30° - 60°.

[0008] Preferably, an electrical appliance cavity is provided on the side of the motor base facing the air outlet. A display is provided in the electrical appliance cavity, and a light-transmitting cover is covered outside the display.

[0009] Preferably, the light-transmitting cover is provided coaxially with the air-collecting cover, and the surface of the light-transmitting cover on the side away from the display forms a curved surface protruding outward.

[0010] Preferably, the outer peripheral wall surface of the motor base includes a pressurizing surface that at least partially increases radially from the air inlet to the air outlet.

[0011] Preferably, a part of the main body at the lower end of the housing extends downward to form a handle front housing, a handle rear housing is covered on the rear side of the handle front housing, a receiving cavity is formed between the handle front housing and the handle rear housing, a circuit board assembly and a storage battery are installed in the receiving cavity, and the storage battery is electrically connected to the circuit board assembly.

[0012] Preferably, a control button and a USB interface are electrically connected and provided on the circuit board assembly. The control button is provided in a through hole provided in advance in the handle front housing and is connected to a button panel. The USB interface is provided in a through hole provided in advance in the handle rear housing and extends out from the through hole.

[0013] Preferably, the air inlet is covered with an air intake cover, and the air intake cover is a perforated cover.

Advantages of the Invention

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0015] The present invention pressurizes the air flow, increases the speed, removes the turbulent flow, and reduces the noise through the combined cooperation of the blower blade group, the air guiding blade, the pressurizing surface and the air collecting cover, and then blows it outwards. This not only greatly improves the air speed and the air blowing distance, but also achieves the effects of silent operation and noise reduction.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0017] Hereinafter, with reference to the drawings in the embodiments of the present invention, the technical means in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative labor shall fall within the protection scope of the present invention.

[0018] As shown in FIGS. 1 to 7, the high-speed air-collecting and pressurizing fan includes a housing 4 with an air passage provided inside. A motor base 41 is provided on the axis of the air passage, a blower blade group 5 is provided on the motor base 41, an air inlet and an air outlet are respectively provided at both ends of the air passage. The air passage is provided in communication with the air inlet and the air outlet. The blower blade group 5 guides the air at the air inlet so as to blow out to the outside from the air outlet after flowing into the air passage. The upper wall surface of the circumferential wall surface of the motor base 41 extends radially outward to form a guiding blade 42. The guiding blade 42 is located on the side facing the air outlet of the blower blade group 5. The guiding blade 42 includes a parallel portion 421 and a twisted air shear portion 422. The parallel portion 421 is provided close to the air outlet. The parallel portion 421 is provided parallel to the axis of the air outlet, adjusts the flow of the air flowing in from the twisted air shear portion to a direction relatively parallel to the axis of the air outlet and blows it out. In this way, it is advantageous to increase the blowing distance of the air flow and improve the effective utilization rate of the air flow. The twisted air shear portion 422 is provided close to the air inlet. The twisted air shear portion 422 is provided offset from the plane where the parallel portion 421 is located, and its extending surface is provided intersecting the axial direction of the blower blade group 5. The air outlet is covered with an air-collecting cover 1. The inner diameter of the air-collecting cover 1 gradually decreases from the air inlet to the air outlet. By providing the air-collecting cover 1, the air-collecting and pressurizing effect can be achieved, and the functions of removing turbulent flow and reducing noise can be realized by compressing the air flow.

[0019] The twisted air shear portion 422 is a curved surface. The extending surface of the curved surface intersects the axis of the blower blade group 5. The inner surface of the curved surface is an air receiving surface 423. The blower blade group 5 includes a rotating base and blower blades uniformly arranged on the outer peripheral wall surface of the rotating base. The surface of the blower blade on the side facing the air outlet is a blowing surface 51. The curved surface where the air receiving surface 423 is located is provided intersecting the curved surface where the blowing surface 51 is located. The air receiving surface 423 and the blowing surface 51 form an angle less than 90°. By forming an acute angle between the air receiving surface 423 and the blowing surface 51, the pressurizing effect of the air flow can be achieved. When the angle between the air receiving surface 423 and the central axis of the blower blade group 5 is between 30° and 60°, the measurement of the comprehensive parameters is optimal.

[0020] An electric appliance cavity 43 is provided on the side facing the exhaust port of the motor base 41, a display 3 is provided in the electric appliance cavity 43, a light-transmitting cover 2 is covered outside the display 3, and the display 3 displays the operation mode of the blower fan and the remaining charge amount of the storage battery 8.

[0021] The light-transmitting cover 2 is provided coaxially with the air collecting cover 1. The surface of the light-transmitting cover 2 on the side away from the display 3 protrudes outward to form a curved surface. The provided curved surface structure is advantageous for reducing the influence of air pressure caused by the air flow within the area occupied by the light-transmitting cover of the exhaust port, thereby reducing the reverse flow phenomenon of the air flow as much as possible and being advantageous for reducing the noise of the air flow.

[0022] The outer peripheral wall surface of the motor base 41 includes a pressurizing surface 44 that at least partially increases radially from the intake port to the exhaust port.

[0023] A part of the main body at the lower end of the housing 4 extends downward to form a handle front housing 45. A handle rear housing 9 is covered on the rear side of the handle front housing 45. A storage cavity is formed between the handle front housing 45 and the handle rear housing 9. A circuit board assembly 7 and a storage battery 8 are mounted in the storage cavity. The storage battery 8 is electrically connected to the circuit board assembly 7. A control button 71 and a USB interface 72 are electrically connected and provided on the circuit board assembly 7. The control button 71 is provided in a pre-provided through hole of the handle front housing 45 and is connected to a button panel. The USB interface 72 is provided in a pre-provided through hole of the handle rear housing 9 and extends outward from the through hole. The control button 71 adjusts the operation mode and operation state of the blower blade group 5. When the USB interface 72 is externally connected to an external power supply by a charging cable, the storage battery 8 can be charged to replenish power.

[0024] An intake cover 6 is provided to cover the intake port, and the intake cover 6 is a watermark embossed cover.

[0025] As described above, according to the present invention, the flow of air is pressurized, the speed is increased, the turbulent flow is removed, and the noise is reduced by the combined action of the blower blade group 5, the air guiding blade 42, the pressurizing surface 44, and the air collecting cover 1, and then blown outwards. This not only greatly improves the air speed and the air blowing distance, but also achieves the effects of quiet operation and noise reduction.

[0026] In this specification, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of such an actual relationship or order between these entities or operations. The terms "comprise", "include" or any other variation thereof are intended to cover non-exclusive inclusion, so a process, method, article or device that includes a series of elements includes not only those elements but also other elements not expressly listed or elements inherent to such a process, method, article or device.

[0027] As described above, the embodiments of the present invention have been shown and described. However, those skilled in the art can make various changes, modifications, substitutions, and variations to these embodiments without departing from the principle and spirit of the present invention. It can be understood that the scope of the present invention is limited by the appended claims for utility model registration and their equivalents.

Explanation of Reference Numerals

[0028] 1 Air collecting cover 2 Translucent cover 3 Display 4 Housing 41 Motor base 42 Air guiding blade 421 Parallel part 422 Twisted air shear part 423 Air receiving surface 43 Electrical appliance cavity 44 Pressurizing surface 45 Handle front housing 5 Blower blade group 51 Blowing surface 6 Intake cover 7 Circuit board assembly 71 Control button 72 USB interface 8 Rechargeable battery 9 Handle rear housing

Claims

1. A high-speed air-collecting and pressurizing blower fan, comprising a housing (4) with an air passage provided therein, a motor base (41) provided on the axis of the air passage, a blower blade group (5) provided on the motor base (41), an air inlet and an air outlet provided at both ends of the air passage respectively, the air passage being provided in communication with the air inlet and the air outlet, the blower blade group (5) guiding the air at the air inlet so as to blow outwards from the air outlet after flowing into the air passage, the upper wall surface of the circumferential wall surface of the motor base (41) extending radially outwards to form a wind guiding blade (42), the wind guiding blade (42) being located on the side facing the air outlet of the blower blade group (5), the wind guiding blade (42) including a parallel portion (421) and a twisted wind cut portion (422), the parallel portion (421) being provided close to the air outlet, the parallel portion (421) being provided parallel to the axis of the air outlet, the twisted wind cut portion (422) being provided close to the air inlet, the twisted wind cut portion (422) being provided offset from the plane where the parallel portion (421) is located, and its extending surface being provided intersecting the axial direction of the blower blade group (5), the air outlet being covered with an air-collecting cover (1), and the inner diameter of the air-collecting cover (1) gradually decreasing from the air inlet to the air outlet.

2. The twisted wind cut portion (422) is a curved surface, the extending surface of the curved surface intersects the axis of the blower blade group (5), the inner surface of the curved surface is a wind receiving surface (423), the blower blade group (5) includes a rotating base and blower blades uniformly arranged on the outer circumferential wall surface of the rotating base, the surface on the side facing the air outlet of the blower blade is a blowing surface (51), the curved surface where the wind receiving surface (423) is located is provided intersecting the curved surface where the blowing surface (51) is located, and the wind receiving surface (423) and the blowing surface (51) form an angle less than 90°. The high-speed air-collecting and pressurizing blower fan according to Claim 1.

3. The angle between the wind receiving surface (423) and the central axis of the blower blade group (5) is 30° to 60°. The high-speed air-collecting and pressurizing blower fan according to Claim 2.

4. An electric appliance cavity (43) is provided on the side facing the exhaust port of the motor base (41), a display (3) is provided in the electric appliance cavity (43), and a light-transmitting cover (2) is covered outside the display (3). The high-speed air-collecting and pressurizing blower according to claim 1 is characterized in that.

5. The light-transmitting cover (2) is provided coaxially with the air-collecting cover (1), and the surface of the light-transmitting cover (2) on the side away from the display (3) protrudes outward to form a curved surface. The high-speed air-collecting and pressurizing blower according to claim 4 is characterized in that.

6. The outer peripheral wall surface of the motor base (41) includes a pressurizing surface (44) that at least partially increases radially from the intake port to the exhaust port. The high-speed air-collecting and pressurizing blower according to claim 1 is characterized in that.

7. A part of the main body at the lower end of the housing (4) extends downward to form a handle front housing (45), a handle rear housing (9) is covered on the rear side of the handle front housing (45), and an accommodation cavity is formed between the handle front housing (45) and the handle rear housing (9). A circuit board assembly (7) and a storage battery (8) are mounted in the accommodation cavity, and the storage battery (8) is electrically connected to the circuit board assembly (7). The high-speed air-collecting and pressurizing blower according to claim 1 is characterized in that.

8. A control button (71) and a USB interface (72) are electrically connected and provided on the circuit board assembly (7). The control button (71) is provided in a through hole provided in advance in the handle front housing (45) and is connected to a button panel. The USB interface (72) is provided in a through hole provided in advance in the handle rear housing (9) and extends outward from the through hole. The high-speed air-collecting and pressurizing blower according to claim 7 is characterized in that.

9. An intake cover (6) is covered on the intake port, and the intake cover (6) is a perforated cover. The high-speed air-collecting and pressurizing blower according to claim 1 is characterized in that.

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