Air duct structure

Abstract

The utility model relates to the field of air duct design and aims at providing an air duct structure which comprises a shell, an air inlet is formed in the front side of the shell, and an air outlet channel is formed in the rear side of the shell. An induced draft scoop; the wind wheel assembly is located on the rear side of the induced draft hopper and rotationally connected to the middle of the inner side of the shell. Wherein the left side and the right side of the rear section of the shell are provided with first air guide cambered surfaces, the convex surfaces of the two first air guide cambered surfaces are oppositely arranged, the left side and the right side of the front section of the shell are provided with second air guide cambered surfaces, and the convex surfaces of the two second air guide cambered surfaces are oppositely arranged; the two second air guide cambered surfaces are located between the two first air guide cambered surfaces, and auxiliary air inlets are formed between the first air guide cambered surfaces and the corresponding second air guide cambered surfaces; a low-pressure area is formed between the two first air guide cambered surfaces, and an external air source enters the low-pressure area through the auxiliary air inlet so as to reduce the air pressure on the rear side of the wind wheel assembly. The rear side wind pressure of the wind wheel can be reduced, and the overall air inlet amount of the air duct and the rotation efficiency of the wind wheel are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of air duct design, concretely to an air duct structure. BACKGROUND

[0002] Wind power generation is welcomed by people due to its cleanness, good environmental benefits, renewability and short capital construction period. In the field of wind power generation, the traditional air duct design is often single in the air inlet path, so that the wind wheel is subjected to large rotating resistance in the running process, which affects the rotating efficiency of the wind wheel. At the same time, the air duct is generally lack of reasonable airflow guiding structure, which is not conducive to the smooth flow of airflow, further reduces the overall air volume and energy efficiency ratio, and it is difficult to realize the demand of efficient wind power generation. SUMMARY

[0003] The utility model discloses a kind of air duct structures, can reduce wind wheel rear side wind pressure, improve the overall air volume of air duct and wind wheel rotating efficiency.

[0004] The utility model discloses a kind of air duct structures, can reduce wind wheel rear side wind pressure, improve the overall air volume of air duct and wind wheel rotating efficiency.

[0005] An air duct structure comprises:

[0006] An outer shell is provided with an air inlet on the front side and an air outlet on the rear side.

[0007] An air guide bucket is installed at the air inlet of the outer shell.

[0008] A wind wheel assembly is located at the rear side of the air guide bucket and is rotationally connected to the inner side of the outer shell.

[0009] The left and right sides of the rear section of the outer shell are provided with first air guide arc surfaces, and the convex surfaces of the two first air guide arc surfaces are arranged oppositely. The left and right sides of the front section of the outer shell are provided with second air guide arc surfaces, and the convex surfaces of the two second air guide arc surfaces are arranged oppositely. The two second air guide arc surfaces are located between the two first air guide arc surfaces, and an auxiliary air inlet is formed between the first air guide arc surface and the corresponding second air guide arc surface. A low-pressure area is formed between the two first air guide arc surfaces, and the external air source enters the low-pressure area through the auxiliary air inlet to reduce the wind pressure at the rear side of the wind wheel assembly.

[0010] Compared with the prior art, the utility model has the following advantages:

[0011] 1. By setting the first air guide arc surface and the second air guide arc surface, the external air source is guided by the first air guide arc surface and the second air guide arc surface to enter the low-pressure area through the auxiliary air inlet, thereby increasing the air volume at the rear side of the wind wheel assembly, reducing the wind pressure at the rear side of the wind wheel, reducing the rotating resistance of the wind wheel, and improving the overall ventilation efficiency of the overall air duct.

[0012] 2. By cooperating the air guide funnel with the wind wheel assembly, the air inlet path is smoother, the air inlet amount and the airflow flow efficiency are improved, and the air duct efficient air inlet is realized. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic diagram of an air duct structure embodiment of the utility model;

[0014] Figure 2 is Figure 1 a cross-sectional schematic diagram;

[0015] Figure 3 is Figure 2 a partial structure enlarged view.

[0016] Label explanation: 1 shell, 100 air outlet channel, 101 first air guide camber, 102 second air guide camber, 103 auxiliary air inlet, 104 low pressure area, 2 air guide funnel, 3 wind wheel assembly, 31 rotating shaft, 32 wind wheel, 321 connecting rod, 322 annular seat, 323 wind blade. DETAILED DESCRIPTION

[0017] The content of the utility model will be explained in detail below by combining with the drawings and embodiments of the specification:

[0018] As Figures 1-3 shown, an embodiment schematic diagram of an air duct structure provided by the utility model is shown:

[0019] An air duct structure comprises:

[0020] A shell 1, a front side of which is provided with an air inlet, and a rear side of which is provided with an air outlet channel 100;

[0021] An air guide funnel 2 is installed at the air inlet of the shell 1;

[0022] A wind wheel assembly 3 is located at the rear side of the air guide funnel 2 and is rotationally connected to the inner side of the shell 1 in the middle part;

[0023] Specifically, the wind wheel assembly 3 is a vertical shaft type wind wheel.

[0024] The first air guide arc surface 101 and the corresponding second air guide arc surface 102 form an auxiliary air inlet 103; the first air guide arc surfaces 101 form a low pressure area 104, and external wind source enters the low pressure area 104 through the auxiliary air inlet 103, so that the wind pressure of the rear side of the wind wheel assembly 3 is reduced.

[0025] The wind wheel assembly 3 comprises a rotating shaft 31 extending upwards and downwards and a plurality of wind wheels 32 arranged on the rotating shaft 31 in a sleeving mode, and the lower end of the rotating shaft 31 penetrates through the bottom side of the shell 1 and is connected with an external power generation mechanism.

[0026] The wind wheel 32 comprises a plurality of connecting rods 321 and an annular seat 322, one end of the connecting rod 321 is fixed on the outer peripheral wall of the annular seat 322, and the connecting rods 321 are arranged in a circumferential interval mode; the other end of the connecting rod 321 is fixed with a fan blade 323, the fan blade 323 extends longitudinally, and the side, away from the connecting rod 321, of the fan blade 323 is provided with a windward arc surface.

[0027] Preferably, the connecting rod 321 and the fan blade 323 are each provided with 5.

[0028] The air inlet and the air guide funnel 2 are each provided with a plurality of air inlets, and the plurality of air inlets, the plurality of air guide funnels 2 and the plurality of wind wheels 32 are in a one-to-one corresponding relationship.

[0029] Preferably, the air inlet, the air guide funnel 2 and the wind wheel 32 are each provided with 3.

[0030] The caliber of the air guide funnel 2 gradually decreases from front to back towards the center line direction, and the front end of the air guide funnel 2 is fixed at the air inlet.

[0031] The principle of the utility model is roughly as follows:

[0032] The external wind source is divided into two paths to enter the shell 1, one path of the wind source directly acts on the wind wheel assembly 3 through the air guide funnel 2 to drive the wind wheel 32 to rotate, and the other path of the wind source enters the low pressure area at the rear side of the wind wheel assembly 3 through the auxiliary air inlet 103 under the guidance of the first air guide arc surface 101 and the second air guide arc surface 102, so that the wind volume at the rear side of the wind wheel 32 is increased, the wind pressure at the rear side of the wind wheel 32 is reduced, the running resistance of the wind wheel 32 is reduced, and the overall ventilation efficiency of the wind channel 32 is improved.

[0033] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An air duct structure characterized by, The utility model relates to a wind turbine, including: A shell (1) is provided with an air inlet on the front side and an air outlet channel (100) on the back side; An air guide (2) is installed at the air inlet of the shell (1); A wind wheel assembly (3) is located at the back side of the air guide (2) and is rotatably connected to the middle part of the inner side of the shell (1); The shell (1) has first air guide arc surfaces (101) on the left and right sides of the back section, the convex surfaces of the two first air guide arc surfaces (101) are oppositely arranged, the shell (1) has second air guide arc surfaces (102) on the left and right sides of the front section, the convex surfaces of the two second air guide arc surfaces (102) are oppositely arranged, the two second air guide arc surfaces (102) are located between the two first air guide arc surfaces (101), and the first air guide arc surface (101) and the corresponding second air guide arc surface (102) form an auxiliary air inlet (103); the two first air guide arc surfaces (101) form a low-pressure area (104), and an external air source enters the low-pressure area (104) through the auxiliary air inlet (103) to reduce the wind pressure at the back side of the wind wheel assembly (3).

2. The air duct structure according to claim 1, characterized by: The wind wheel assembly (3) includes a rotating shaft (31) extending upward and downward and a plurality of wind wheels (32) spacedly sleeved on the rotating shaft (31), and the lower end of the rotating shaft (31) penetrates through the bottom side of the shell (1) and is connected to an external power generation mechanism.

3. The air duct structure according to claim 2, characterized by: The wind wheel (32) includes a plurality of connecting rods (321) and an annular seat (322), one end of the connecting rod (321) is fixed to the outer peripheral wall of the annular seat (322), and the plurality of connecting rods (321) are circumferentially spaced; the other end of the connecting rod (321) is fixed with a fan blade (323), the fan blade (323) extends longitudinally, and the side of the fan blade (323) away from the connecting rod (321) is provided with a windward arc surface.

4. The air duct structure according to claim 2, characterized by: The air inlet and the air guide (2) are each provided with a plurality of air inlets, and the plurality of air inlets, the plurality of air guides (2), and the plurality of wind wheels (32) have a one-to-one correspondence.

5. The air duct structure according to any one of claims 1 to 4, characterized by: The caliber of the air guide (2) gradually decreases from front to back towards the center line direction, and the front end of the air guide (2) is fixed at the air inlet.

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