CN219242256U

CN219242256U - Low-cost high wind pressure axial fan structure

Info

Publication number: CN219242256U
Application number: CN202320797876.8U
Authority: CN
Inventors: 李良; 李秀宇; 朱立平; 张笑海
Original assignee: Qingdao Haojiang Electronic Technology Co ltd
Current assignee: Qingdao Haojiang Electronic Technology Co ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-06-23
Anticipated expiration: 2033-04-12

Abstract

The utility model provides a low-cost high-wind-pressure axial flow fan structure, which belongs to the technical field of fans and comprises a fan shell; the motor fixing plate is fixedly connected to the circumferential inner wall of the fan shell; the alternating current motor is fixedly connected in the motor fixing plate; the front fan blade is arranged in the alternating current motor; the rear fan blade is arranged in the alternating current motor; driven bull stick solves axial fan wind pressure low problem, and the realization speed of taking a breath of lower cost is unnecessary to adopt the direct current variable frequency control of price.

Description

Low-cost high wind pressure axial fan structure

Technical Field

The utility model belongs to the technical field of fans, and particularly relates to a low-cost high-wind-pressure axial flow fan structure.

Background

The existing axial flow fan has the advantages that the volume is very small, almost the same as the air duct, when the blade angle of the axial flow fan can be adjusted, the fan efficiency is not great along with the increase and decrease of the load, but the problem of high wind pressure cannot be realized, the static pressure at the air inlet of the axial flow fan is insufficient, the circulation speed is low, the rotating speed of the alternating current fan is influenced by the characteristics of the alternating current fan, the rotating speed is 120 times 50HZ/P (polar number), and the direct current motor needs PCB control and has higher cost.

Disclosure of Invention

The utility model aims to provide a low-cost high-wind-pressure axial flow fan structure, which aims to solve the problems that high wind pressure cannot be realized, static pressure at an air inlet of an axial flow fan is insufficient, circulation speed is low, the rotating speed of an alternating current fan is influenced by the characteristics of the alternating current fan, the rotating speed is 120 x 50HZ/P (pole number), and a direct current motor needs PCB control and has high cost.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a fan housing;

the motor fixing plate is fixedly connected to the circumferential inner wall of the fan shell;

the alternating current motor is fixedly connected in the motor fixing plate;

the front fan blade is arranged in the alternating current motor;

the rear fan blade is arranged in the alternating current motor;

the two driven rotating rods are respectively fixedly connected to one side end of the front fan blade and one side end of the rear fan blade;

the supercharging mechanisms are arranged in two groups, and the two groups of supercharging mechanisms are arranged in the alternating current motor and are respectively connected with the front fan blade and the rear fan blade.

As a preferred embodiment of the present utility model, both sets of said pressurizing mechanisms comprise a rotating assembly and an accelerating assembly.

As a preferable scheme of the utility model, the rotating assembly comprises a driving rotating rod, a first gear and a fourth gear, wherein the driving rotating rod is fixedly connected with the output end of the alternating current motor, the first gear is fixedly connected with one side end of the driving rotating rod, the fourth gear is fixedly connected with one side end of the driven rotating rod, and the fourth gear is connected with the first gear and the accelerating assembly.

As a preferred scheme of the utility model, the accelerating assembly comprises a transmission rotating rod, a third gear and a second gear, wherein the transmission rotating rod is arranged in the alternating current motor, the third gear is fixedly connected to the circumferential surface of the transmission rotating rod and meshed with the fourth gear, and the second gear is fixedly connected to the circumferential surface of the transmission rotating rod and meshed with the first gear.

As a preferable scheme of the utility model, the circumference inner wall of the alternating current motor is fixedly connected with two first fixing plates, the side ends of the two first fixing plates are respectively provided with two first rotating grooves, and the two driven rotating rods respectively rotate in the two first rotating grooves.

As a preferable scheme of the utility model, one side ends of the two first rotating grooves are fixedly connected with a second fixing plate, two second rotating grooves are respectively formed in the side ends of the two second fixing plates, and the two transmission rotating rods respectively rotate in the two second rotating grooves.

Compared with the prior art, the utility model has the beneficial effects that:

1. in this scheme, through this device, change the transmission ratio through booster mechanism, the rotational speed of preceding flabellum and back flabellum is all faster than the speed of alternating current motor itself, can infinitely accelerate, solves the low problem of axial fan wind pressure, and the realization speed of taking a breath of lower cost, and unnecessary adoption price is expensive direct current variable frequency control.

2. In this scheme, through this device, preceding flabellum adopts best blade angle to promote through the size rotational speed, promote the amount of wind greatly, back flabellum is the same motion principle also, but the structure of flabellum is different with preceding flabellum, and back flabellum adopts the biggest blade quantity, mainly realizes big wind pressure, realizes big wind pressure with the blade that back flabellum is densely distributed, simultaneously in addition the wind pressure that the preceding flabellum produced, two combinations, guarantees big wind pressure.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a perspective view of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the internal structure of the present utility model;

FIG. 3 is a cross-sectional exploded view of the internal structure of the present utility model;

fig. 4 is an enlarged view of the utility model at a in fig. 3.

In the figure: 1. a fan housing; 2. an alternating current motor; 3. a motor fixing plate; 4. front fan blades; 5. rear fan blades; 6. a driving rotating rod; 7. a first gear; 8. a first fixing plate; 9. a first rotating groove; 10. a driven rotating rod; 11. a fourth gear; 12. a second fixing plate; 13. a transmission rotating rod; 14. a third gear; 15. a second gear; 16. and a second rotary groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-4, the present utility model provides the following technical solutions:

a low cost high wind pressure axial flow fan structure comprising:

a fan housing 1;

the motor fixing plate 3 is fixedly connected to the circumferential inner wall of the fan shell 1;

the alternating current motor 2, the alternating current motor 2 is fixedly connected in the motor fixing plate 3;

the front fan blade 4 is arranged in the alternating current motor 2;

the rear fan blade 5 is arranged in the alternating current motor 2;

the two driven rotating rods 10 are arranged, and the two driven rotating rods 10 are fixedly connected with one side end of the front fan blade 4 and one side end of the rear fan blade 5 respectively;

the supercharging mechanisms are provided with two groups, and the two groups of supercharging mechanisms are arranged in the alternating current motor 2 and are respectively connected with the front fan blade 4 and the rear fan blade 5.

In the specific embodiment of the utility model, the motor fixing plate 3 is sleeved outside the alternating current motor 2 and is used for fixing the alternating current motor 2, the alternating current motor 2 provides power for the rotation of the front fan blade 4 and the rear fan blade 5, when the alternating current motor 2 is started, the pressurizing mechanism is driven to operate, the front fan blade 4 and the rear fan blade 5 are indirectly driven to operate, at the moment, the transmission ratio is changed through the pressurizing mechanism, the rotating speeds of the front fan blade 4 and the rear fan blade 5 are faster than the speed of the alternating current motor 2, the speed can be infinitely increased, the front fan blade 4 adopts the optimal blade angle, the wind quantity is greatly increased through the size rotating speed increase, the same motion principle of the rear fan blade 5 is greatly increased, but the structure of the fan blade is different from that of the front fan blade 4, the rear fan blade 5 adopts the maximum blade quantity, the large wind pressure is mainly realized, the large wind pressure is realized by the blades densely distributed by the blades of the rear fan blade 5, and the wind pressure generated by the front fan blade 4 is combined, the large wind pressure is ensured, and the problem of low wind pressure of the axial flow fan is solved.

Referring specifically to fig. 1-4, both sets of supercharging mechanisms include a rotating assembly and an accelerating assembly.

In this embodiment: when the alternating current motor 2 is started, the rotating component and the accelerating component are driven to operate, and the rotation of the front fan blade 4 and the rear fan blade 5 is accelerated by changing the transmission ratio through the accelerating component.

Referring to fig. 1-4 specifically, the rotating assembly includes a driving rotating rod 6, a first gear 7 and a fourth gear 11, the driving rotating rod 6 is fixedly connected to an output end of the ac motor 2, the first gear 7 is fixedly connected to one side end of the driving rotating rod 6, the fourth gear 11 is fixedly connected to one side end of the driven rotating rod 10, and the fourth gear 11 is connected to the first gear 7 and the accelerating assembly.

In this embodiment: when the alternating current motor 2 is started, the driving rotating rods 6 at the output ends at two sides of the alternating current motor 2 are driven to rotate, the first gear 7 is driven to rotate, the accelerating assembly meshed with the first gear 7 is driven to rotate through the first gear 7, the transmission ratio is increased, and the fourth gear 11 connected with the driven rotating rod 10 is driven to rotate, so that the rotating speeds of the front fan blade 4 and the rear fan blade 5 are faster than the speed of the alternating current motor 2, and the speed can be infinitely increased.

Referring to fig. 1-4 specifically, the accelerating assembly includes a transmission rotating rod 13, a third gear 14 and a second gear 15, the transmission rotating rod 13 is disposed in the ac motor 2, the third gear 14 is fixedly connected to the circumferential surface of the transmission rotating rod 13 and engaged with the fourth gear 11, and the second gear 15 is fixedly connected to the circumferential surface of the transmission rotating rod 13 and engaged with the first gear 7.

In this embodiment: the diameters of the fourth gear 11 and the second gear 15 are smaller than those of the first gear 7 and the third gear 14, when the first gear 7 rotates, the second gear 15 meshed with the first gear 7 is driven to rotate, and because the diameter of the second gear 15 is smaller, the rotating speeds of the second gear 15, the transmission rotating rod 13 and the third gear 14 are increased, the rotating speeds of the third gear 14, the fourth gear 11 and the driven rotating rod 10 are further increased, and the rotating speeds of the front fan blades 4 and the rear fan blades 5 are faster than the speed of the alternating current motor 2 by changing the diameters of the first gear 7, the fourth gear 11, the third gear 14 and the second gear 15, so that the air quantity is greatly improved.

Referring to fig. 1-4 specifically, two first fixing plates 8 are fixedly connected to the circumferential inner wall of the ac motor 2, two first rotating grooves 9 are respectively formed at the side ends of the two first fixing plates 8, and two driven rotating rods 10 respectively rotate in the two first rotating grooves 9.

In this embodiment: the first fixed plate 8 is fixed on the inner wall of the alternating current motor 2 and sleeved outside the two driven rotating rods 10, the rotation of the front fan blades 4 and the rear fan blades 5 is not affected, the first rotating groove 9 is formed in one side end of the first fixed plate 8, and the driven rotating rods 10 rotate in the first rotating groove 9 to support the front fan blades 4 and the rear fan blades 5 and limit the rotation of the driven rotating rods 10.

Referring to fig. 1-4, a second fixing plate 12 is fixedly connected to one side end of the two first fixing plates 8, two second rotating grooves 16 are respectively formed in the side ends of the two second fixing plates 12, and two transmission rotating rods 13 respectively rotate in the two second rotating grooves 16.

In this embodiment: the second fixing plate 12 is arranged on one side of the first fixing plate 8, the second rotating groove 16 is provided with a side end of the second fixing plate 12 and is in the same straight line with the transmission rotating rod 13, and the transmission rotating rod 13 rotates in the second rotating groove 16 to support and limit the transmission rotating rod 13.

It should be noted that, the ac motor 2 used in the present apparatus is a prior art, and will not be described in detail herein.

The working principle and the using flow of the utility model are as follows: when the alternating current motor 2 is started, the supercharging mechanism is driven to operate, the front fan blade 4 and the rear fan blade 5 are indirectly driven to operate, at the moment, the transmission ratio is changed through the supercharging mechanism, the rotating speeds of the front fan blade 4 and the rear fan blade 5 are faster than that of the alternating current motor 2, the speed can be infinitely increased, the front fan blade 4 adopts the optimal blade angle and is increased through the size rotating speed, the air quantity is greatly increased, the rear fan blade 5 also has the same motion principle, but the structure of the fan blade is different from that of the front fan blade 4, the rear fan blade 5 adopts the largest blade quantity, the large air pressure is mainly realized, the large air pressure is realized by the blades densely distributed by the rear fan blade 5, meanwhile, the air pressure generated by the front fan blade 4 is combined, the large air pressure is ensured, and the problem of low air pressure of the axial flow fan is solved.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A low-cost high wind pressure axial fan structure, characterized by comprising:

a fan housing (1);

the motor fixing plate (3), the said motor fixing plate (3) is fixedly connected to circumference inner wall of the blower housing (1);

the alternating current motor (2), the alternating current motor (2) is fixedly connected in the motor fixing plate (3);

the front fan blade (4), the said front fan blade (4) locates in alternating current motor (2);

the rear fan blade (5), the rear fan blade (5) is arranged in the alternating current motor (2);

the two driven rotating rods (10) are arranged, and the two driven rotating rods (10) are fixedly connected with one side end of the front fan blade (4) and one side end of the rear fan blade (5) respectively;

the supercharging mechanisms are arranged in two groups, are arranged in the alternating current motor (2) and are respectively connected with the front fan blade (4) and the rear fan blade (5).

2. The low-cost high-wind-pressure axial flow fan structure according to claim 1, wherein: both groups of supercharging mechanisms comprise a rotating component and an accelerating component.

3. The low-cost high-wind-pressure axial flow fan structure according to claim 2, wherein: the rotating assembly comprises a driving rotating rod (6), a first gear (7) and a fourth gear (11), wherein the driving rotating rod (6) is fixedly connected to the output end of the alternating current motor (2), the first gear (7) is fixedly connected to one side end of the driving rotating rod (6), the fourth gear (11) is fixedly connected to one side end of the driven rotating rod (10), and the fourth gear (11) is connected with the first gear (7) and the accelerating assembly.

4. A low cost high wind pressure axial flow fan structure according to claim 3, wherein: the accelerating assembly comprises a transmission rotating rod (13), a third gear (14) and a second gear (15), wherein the transmission rotating rod (13) is arranged in the alternating current motor (2), the third gear (14) is fixedly connected to the circumferential surface of the transmission rotating rod (13) and meshed with the fourth gear (11), and the second gear (15) is fixedly connected to the circumferential surface of the transmission rotating rod (13) and meshed with the first gear (7).

5. The low-cost high-wind-pressure axial flow fan structure according to claim 4, wherein: the alternating current motor (2) is characterized in that two first fixing plates (8) are fixedly connected to the inner circumferential wall of the alternating current motor (2), two first rotating grooves (9) are respectively formed in the side ends of the first fixing plates (8), and two driven rotating rods (10) rotate in the two first rotating grooves (9) respectively.

6. The low-cost high-wind-pressure axial flow fan structure according to claim 5, wherein: one side end of each first rotating groove (9) is fixedly connected with a second fixing plate (12), two second rotating grooves (16) are respectively formed in the side ends of each second fixing plate (12), and each transmission rotating rod (13) rotates in each second rotating groove (16).