Air outlet section vaneless fog cannon fan

Abstract

An air outlet section vaneless fog gun fan, effectively solve the problem that high speed fan is easy to produce noise, including the air duct, the motor is fixed in the air duct, the output shaft of the motor is fixed with the fan blade, the fan blade is located in the air inlet section of the air duct, the fan blade includes the shaft sleeve fixedly connected with the output shaft of the motor, the fan blade is curved vane, the fan blade is provided with arc-shaped gap close to the air inlet side, the fan blade rotates and drives the airflow to form spiral and spray out from the air outlet, the utility model discloses simple and ingenious structure, convenient to use, improves the static guide vane shape of air inlet section, reduces the fan blade cutting noise, and the airflow is sprayed according to certain spiral line, which can effectively improve the straightness of water mist and increase the range.

Description

Technical Field

[0001] This utility model relates to the field of fog cannon fan technology, and in particular to a fog cannon fan with no guide vanes at the air outlet section. Background Technology

[0002] Fog cannon fans are devices used in greening systems to power fog cannons. They accelerate the airflow inside the fan duct by rotating the fan blades at high speed, thus propelling the fog cannons a greater distance.

[0003] The existing fog cannon fans have the following drawbacks: due to the high speed, the noise when the fan blades cut the air is relatively large, so noise protection is required during use to avoid affecting the surrounding area, which is extremely inconvenient during use. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, this utility model provides a vaneless mist cannon fan at the air outlet section, which effectively solves the problem of noise generated by high-speed fans.

[0005] The technical solution to the technical problem is: a fog cannon fan without guide vanes in the air outlet section, including a wind tunnel, a motor fixed inside the wind tunnel, a fan blade fixed on the output shaft of the motor, and the fan blade located in the air inlet section of the wind tunnel;

[0006] The fan blade includes a bushing that is fixedly connected to the motor output shaft. The fan blade is a curved guide vane. The fan blade has an arc-shaped notch on the side near the air inlet. The rotation of the fan blade drives the airflow to form a spiral and is ejected from the air outlet.

[0007] Preferably, a cover net is fixed to the air inlet end of the air duct.

[0008] Preferably, the inner diameter connecting rod of the air duct is fixed with a ring sleeve, and the motor is fixed inside the ring sleeve.

[0009] Preferably, keyways are provided at corresponding positions on the motor output shaft and the fan blade bushing, and the motor output shaft and the fan blade bushing are connected by a key.

[0010] This utility model has a simple and ingenious structure and is easy to use. It improves the air inlet section's static guide vane shape, reduces fan blade cutting noise, and induces airflow to spray out in a certain spiral line, which can effectively improve the straightness of the water mist and increase its range. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a fog cannon fan without guide vanes at the air outlet section according to this utility model.

[0012] Figure 2 This is a cross-sectional schematic diagram of a fog cannon fan with no guide vanes in the air outlet section according to the present invention.

[0013] Figure 3This is a schematic diagram of the structure of the air duct of a fog cannon fan without guide vanes at the air outlet section according to this utility model.

[0014] Figure 4 This is a schematic diagram of the fan blade structure in a vaneless fog cannon fan at the air outlet section according to this utility model. Figure 1 .

[0015] Figure 5 This is a schematic diagram of the fan blade structure in a vaneless fog cannon fan at the air outlet section according to this utility model. Figure 2 . Detailed Implementation

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Depend on Figures 1 to 5 It is known that a type of air outlet section without guide vane fog cannon fan includes air duct 1, a motor 2 is fixed inside the air duct 1, a fan blade 3 is fixed on the output shaft of the motor 2, and the fan blade 3 is located in the air inlet section of the air duct 1.

[0018] The fan blade 3 includes a bushing 4 that is fixedly connected to the output shaft of the motor 2. The fan blade 3 is a curved guide vane. The fan blade 3 has an arc-shaped notch 5 on the side near the air inlet. The fan blade 3 rotates and drives the airflow to form a spiral and spray out from the air outlet.

[0019] In practical use, this utility model

[0020] After assembling the fan, start motor 2. Motor 2 drives fan blade 3 to rotate. The curved guide vane of fan blade 3 is located in the air inlet section. Through its curved design, it has low noise when cutting the air and drives the airflow to form a spiral when running at high speed, thus improving the straightness and range of the water mist.

[0021] The fan blade 3 is located in the air inlet section of the air duct 1. Its high-speed rotation can cause the airflow to form a spiral. Traditional fans place the fan blade 3 at the air outlet, which can only accelerate the airflow but cannot form a spiral airflow, thus limiting the range of the water mist spray. However, this fan places the fan blade 3 in the air inlet section. When it rotates at high speed, it causes the airflow to form a spiral airflow in the air duct 1. In addition, the air outlet of the air duct 1 has a converging structure, which makes the sprayed airflow have a centripetal tendency, thereby increasing the range of the water mist spray.

[0022] A cover 6 is fixed at the air inlet end of the air duct 1 to prevent impurities from entering the air duct 1.

[0023] The inner diameter connecting rod of the air duct 1 is fixed with a ring sleeve 7, the motor 2 is fixed inside the ring sleeve 7, and the output shaft of the motor 2 and the corresponding position of the bushing 4 of the fan blade 3 are provided with keyways 8, and the output shaft of the motor 2 and the bushing 4 of the fan blade 3 are connected by a key.

[0024] By disassembling the cover 6, the fan blades 3 can be cleaned, maintained, or replaced. The fan blades 3 are connected to the motor 2 via a key to ensure stability during use and eliminate noise.

[0025] Compared with the prior art, this utility model has the following advantages: the curved guide vane is designed according to the airflow direction, which reduces the noise of the fan blade cutting the wind and induces the airflow to be sprayed out in a spiral line with a certain pitch, effectively improving the straightness of the water mist and increasing the range.

Claims

1. A vaneless mist cannon fan at the air outlet section, characterized in that, Includes a duct (1), a motor (2) is fixed inside the duct (1), and a fan blade (3) is fixed on the output shaft of the motor (2). The fan blade (3) is located in the air inlet section of the duct (1). The fan blade (3) includes a bushing (4) that is fixedly connected to the output shaft of the motor (2). The fan blade (3) is a curved guide vane. The fan blade (3) has an arc-shaped notch (5) on the side near the air inlet. The fan blade (3) rotates and drives the airflow to form a spiral and spray out from the air outlet.

2. The air outlet section vaneless mist cannon fan according to claim 1, characterized in that, The air inlet end of the air duct (1) is fixed with a cover net (6).

3. The air outlet section vaneless mist cannon fan according to claim 1, characterized in that, The inner diameter connecting rod of the air duct (1) is fixed with a ring sleeve (7), and the motor (2) is fixed inside the ring sleeve (7).

4. The air outlet section vaneless mist cannon fan according to claim 1, characterized in that, The output shaft of the motor (2) and the bushing (4) of the fan blade (3) are provided with keyways (8) at corresponding positions, and the output shaft of the motor (2) and the bushing (4) of the fan blade (3) are connected by a key.

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