CN204267335U - Axial type energy-saving blower fan - Google Patents

Abstract

The utility model relates to an axial-flow energy-saving fan, which comprises a main air cylinder, an air inlet section and an air outlet section. There is a heat dissipation air inlet pipe on the top, and the motor is connected with an impeller. The impeller includes a central cylinder and a plurality of blades, each blade is rotated, and the rotation angle α of each blade is 23-47°. The product structure of the utility model is simple to manufacture, compact in structure, small in appearance and volume, convenient and flexible in on-site installation, good in cooling effect and low in energy consumption. The utility model replaces the traditional impeller with a special impeller. The blade width is wide and the chord length is large, so that it has a large air volume, low noise and small vibration, and can achieve all the motor power compared with the centrifugal fan under the same air volume and wind pressure. It should be 43% to 50% smaller, so as to achieve the effect of saving energy and reducing consumption.

Description

Axial flow energy-saving fan

technical field

The utility model relates to an axial flow energy-saving fan.

Background technique

At present, both centrifugal fans and axial fans are fluid machines widely used in modern industrial fields, which have brought considerable economic benefits to enterprises and promoted the automation process of industrial production. Centrifugal fans generally use motors with low revolutions, high motor power, and more power consumption. Centrifugal fans change the flow direction of the medium in the air duct, while axial flow fans do not change the flow direction of the medium in the air duct. The former has a large air volume and wind pressure; the latter has a low air volume and wind pressure. The former is more complicated to install; the latter is easier to install. The former motor and the fan are generally connected by a shaft, so there is power consumption during the transmission process; the latter motor is generally inside the fan, and the centrifugal fan has more advantages than the axial flow fan in the combination of large air volume and high air pressure. Under the same power, the axial flow fan using the general traditional impeller cannot achieve the same air volume and wind pressure as the centrifugal fan.

Contents of the invention

The purpose of the utility model is to overcome the above disadvantages and provide an axial flow energy-saving fan with simple structure, convenient installation and obvious ventilation and cooling effect.

The purpose of this utility model is achieved through the following technical solutions: an axial flow energy-saving fan, including a main air cylinder, an air inlet section, and an air outlet section. , there is a motor in the inner cylinder, and a cooling air inlet pipe is arranged above the motor, and the motor is connected with an impeller, which includes a central cylinder and multiple blades, each blade is rotated, and the rotation angle α of each blade is 23-47° .

The further improvement of the utility model is that: the air inlet section includes an air inlet cylinder, a support plate, a flange, a tapered air inlet and an inlet mask.

The further improvement of the utility model is that: the air inlet section includes an air inlet tube, a support plate, a flange, a retaining ring on the support plate, a hemispherical air inlet and an air inlet mask.

The further improvement of the utility model is that: the main air cylinder is provided with a motor outlet pipe and a motor junction box.

Compared with the prior art, the utility model has the following advantages: the utility model replaces the traditional impeller with a special impeller, so that the power of all the motors of the centrifugal fan is 43% to 50% smaller than that of the centrifugal fan under the same air volume and wind pressure. So as to achieve the effect of saving energy and reducing consumption.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of impeller;

Fig. 3 is an enlarged perspective view of part A in Fig. 2;

Fig. 4 is the structural representation of air inlet section in embodiment 2;

Labels in the figure: 1-main air cylinder, 2-air inlet section, 3-air outlet section, 4-air outlet cover, 5-inner cylinder, 6-motor, 7-radiating air inlet pipe, 8-central cylinder, 9-blade, 10-air inlet tube, 11-branch plate, 12-flange, 13-conical air inlet, 14-inlet mask, 15-retaining ring, 16-hemispherical air inlet, 17-motor outlet Tube, 18-motor junction box, α-rotation angle, 19-bracket.

Detailed ways:

In order to deepen the understanding of the utility model, the utility model will be further described below in conjunction with the embodiments and accompanying drawings. The embodiment is only used to explain the utility model, and does not constitute a limitation to the protection scope of the utility model.

Example 1:

Figures 1 to 3 show an embodiment of the utility model axial-flow energy-saving fan, which includes a main air cylinder 1, an air inlet section 2, and an air outlet section 3, and the air outlet section 3 is provided with an air outlet cover 4, The air inlet section 2 includes an air inlet cylinder 10, a support plate 11, a flange 12, a conical air inlet 13 and an inlet mask 14. The main air cylinder 1 is an inner cylinder 5, and there is a motor 6 inside the inner cylinder 5. There is a heat dissipation air inlet pipe 7, and the motor 6 is connected with an impeller. The impeller includes a central cylinder 8 and a plurality of blades 9, and each blade 9 is rotated. The rotation angle α of each blade 9 is 23-47°, and the rotation angle α is the angle between the rotating surface of the blade and the horizontal plane. The width of the blade is 227-238.5mm. Whole fan can be placed on support 19, becomes vertical fan.

Example 2:

Figure 4 shows an embodiment of the utility model axial-flow energy-saving fan, including a main air cylinder 1, an air inlet section 2, and an air outlet section 3. 2 includes the air inlet tube 10, the support plate 11, the flange 12, the retaining ring 15 on the support plate 11, the hemispherical air inlet 16 and the inlet mask 14, the main air tube 1 is the inner tube 5, and the inner tube 5 has Motor 6, a heat dissipation air inlet pipe 7 is arranged above the motor 6, and the motor 6 is connected with an impeller, the impeller includes a central cylinder 8 and a plurality of blades 9, each blade 9 is rotated, and the rotation angle α of each blade 9 is 23 -47°, the rotation angle α is the angle between the rotating surface of the blade and the horizontal plane, the width of the blade is 227-238.5mm, the blade is narrow at the top and wide at the bottom, and the trend is increasing from top to bottom.

On the basis of Embodiment 1 and Embodiment 2, the following structure can be added: the main air cylinder 1 is provided with a motor outlet pipe 17 and a motor junction box 18 .

The product structure of the utility model is simple to manufacture, compact in structure, small in appearance and volume, convenient and flexible in on-site installation, good in cooling effect and low in energy consumption. The utility model replaces the traditional impeller with a special impeller. The blade width is wide and the chord length is large, so that it has a large air volume, low noise and small vibration, and can achieve all the motor power compared with the centrifugal fan under the same air volume and wind pressure. It should be 43% to 50% smaller, so as to achieve the effect of saving energy and reducing consumption.

The applicant further stated that the utility model uses the above-mentioned embodiments to illustrate the implementation method and device structure of the utility model, but the utility model is not limited to the above-mentioned embodiment, that is, it does not mean that the utility model must rely on the above-mentioned method and structure can be implemented. Those skilled in the art should understand that any improvement of the utility model, the equivalent replacement of the implementation method selected by the utility model, the addition of steps, the selection of specific methods, etc., all fall within the scope of protection and disclosure of the utility model within.

The utility model is not limited to the above-mentioned embodiments, and all methods that use structures and methods similar to the utility model to achieve the purpose of the utility model are within the scope of protection of the utility model.

Claims (4)

1. an axial type energy-saving blower fan, comprise main wind tube (1), wind inlet section (2), wind outlet section (3), wind outlet section (3) is provided with outlet housing (4), be inner core (5) in main wind tube (1), motor (6) is had in inner core (5), described motor (6) top is provided with heat radiation air intake pipe (7), it is characterized in that: described motor (6) is connected with impeller, described impeller comprises center drum (8) and multiple blade (9), each blade (9) is rotary setting all, and the angle of swing (α) of each blade (9) is 23-47 °.

2. axial type energy-saving blower fan according to claim 1, is characterized in that: described wind inlet section (2) comprises air intake cylinder (10), support plate (11), flange (12), the intake grill (13) of taper and import cover (14).

3. axial type energy-saving blower fan according to claim 1, is characterized in that: described wind inlet section (2) comprises back-up ring (15) on air intake cylinder (10), support plate (11), flange (12), support plate (11), the intake grill (16) of hemisphere type and import cover (14).

4. axial type energy-saving blower fan according to claim 1, is characterized in that: be provided with motor outlet wire pipe (17) and connection box for motor (18) outside described main wind tube (1).