Inducing fan with compressed air as power

Abstract

The utility model discloses an induced fan with compressed air as power, which comprises an outer cylinder (1), a nozzle (2), an inner cylinder (3) and an air mixing cavity (4). The inner cylinder (3) is arranged in the outer cylinder (1), the air mixing cavity (4) is arranged between the outer cylinder (1) and the inner cylinder (3), and the nozzle (2) is arranged between the top end of the outer cylinder (1) and the top end of the inner cylinder (3). The air compressor supplies power to compressed air outside a large workshop, and is durable.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal, and particularly relates to an induced draft fan powered by compressed air. Background Art

[0002] The overall dust removal of dust and conductive dust in large workshops has always been a difficult point in the HVAC and environmental protection industries. Because of the high height, the overall dust removal of large workshops has always been a difficult point in the HVAC and environmental protection industries. Because of the high height of large workshops and the harsh on-site environment, the amount of dust and even conductive dust is large. Ordinary ventilation equipment generates air flow by driving the high-speed rotation of the impeller by a motor. When an ordinary induced draft fan enters such an environment, conductive dust will enter the motor, resulting in a short circuit of the motor coil and damage to the motor. Summary of the Invention

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide an induced draft fan powered by compressed air, which is durable and powered by compressed air provided by an air compressor outside the large workshop.

[0004] The purpose of the utility model and the solution of its main technical problems are achieved by adopting the following technical solutions:

[0005] An induced draft fan powered by compressed air of the utility model comprises an outer cylinder, a nozzle, an inner cylinder and a mixing air cavity. It is characterized in that: an inner cylinder is installed inside the outer cylinder, there is a mixing air cavity between the outer cylinder and the inner cylinder (3), and there is a nozzle between the top ends of the outer cylinder and the inner cylinder.

[0006] A convex head is arranged at the top end of the outer cylinder.

[0007] A convex head is arranged at the top end of the inner cylinder, and a nozzle is formed between the convex head arranged at the top end of the inner cylinder and the convex head arranged at the top end of the outer cylinder.

[0008] An air inlet pipe is installed on the outer cylinder, and the air inlet pipe is communicated with the mixing air cavity.

[0009] Compared with the prior art, the utility model has obvious beneficial effects. From the above technical solutions, it can be seen that: an inner cylinder is installed in the outer cylinder, there is a mixing air chamber between the outer cylinder and the inner cylinder, and there is a nozzle between the top ends of the outer cylinder and the inner cylinder. The air compressor compresses air outside the large workshop, and the compressed air enters the mixing air chamber through the air inlet pipe. The air inlet pipe forms a 45-degree angle with the outer cylinder, which is convenient for the compressed gas to quickly enter the mixing air chamber and quickly increase the pressure in the mixing air chamber. As the pressure increases, the speed of the compressed gas blown out from the directional nozzle gradually increases. When the pressure in the mixing air chamber reaches the maximum, the wind speed of the directional nozzle reaches the maximum. A circular air flow will be formed at the tail of the outer cylinder. According to Bernoulli's principle and the characteristics of fluid mechanics, inside the circular air flow, the air will be driven forward along with the air flow, and outside the circular air flow, the air will also be driven forward. A negative pressure area will be formed inside and at the front end of the inner cylinder, and new gas will be attracted in. After measurement, the air flow driven by the circular air flow is fifteen times the air flow ejected from the directional nozzle, greatly improving the overall space gas flow efficiency. Since there is no motor, there will be no situation of motor damage, realizing that the air compressor compresses air outside the large workshop to provide power, which is durable. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the utility model;

[0011] Figure 2 is Figure 1 a sectional view taken along line A-A;

[0012] Figure 3 is Figure 2 an enlarged view of a.

[0013] Reference numerals in the drawings

[0014] 1. Outer cylinder; 2. Nozzle; 3. Inner cylinder; 4. Mixing air chamber; 5. Air inlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following will describe in detail the specific embodiments, structures, features and functions of the present invention in conjunction with the accompanying drawings and preferred embodiments.

[0016] An induced draft fan powered by compressed air according to the present invention includes an outer cylinder 1, a nozzle 2, an inner cylinder 3, a mixing air chamber 4, and an air inlet pipe 5. It is characterized in that: an inner cylinder 3 is installed in the outer cylinder 1, there is a mixing air chamber 4 between the outer cylinder 1 and the inner cylinder 3, there is a nozzle 2 between the top ends of the outer cylinder 1 and the inner cylinder 3, a convex head is provided at the top end of the outer cylinder 1, a convex head is provided at the top end of the inner cylinder 3, and a nozzle 2 is formed between the convex head provided at the top end of the inner cylinder 3 and the convex head provided at the top end of the outer cylinder 1. An air inlet pipe 5 is installed on the outer cylinder 1, and the air inlet pipe 5 communicates with the mixing air chamber 4.

[0017] During use, an induced draft fan powered by compressed air is installed in a large workshop. An air compressor compresses air outside the large workshop. The compressed air enters the air mixing chamber 4 through the air inlet pipe 5. The air inlet pipe 5 forms a 45-degree angle with the outer cylinder 1, facilitating the rapid entry of compressed gas into the air mixing chamber 4 and quickly increasing the pressure in the air mixing chamber 4. As the pressure increases, the velocity of the compressed gas blown out from the directional nozzle 3 gradually rises. When the pressure in the air mixing chamber 2 reaches its maximum, the wind speed of the directional nozzle 2 reaches its maximum. A ring-shaped air flow is formed at the tail of the outer cylinder 1. According to Bernoulli's principle and the characteristics of fluid mechanics, inside the ring-shaped air flow, air will be driven forward along with the air flow, and outside the ring-shaped air flow, air will also be driven forward. A negative pressure area will be formed inside and at the front end of the inner cylinder 3, and new gas will be attracted in. After measurement, the air flow driven by the ring-shaped air flow is fifteen times the air flow ejected from the directional nozzle 3, greatly improving the overall spatial gas flow efficiency.

[0018] The above is only a preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An induced fan using compressed air as a power source, comprising an outer cylinder (1), a nozzle (2), an inner cylinder (3), and an air mixing chamber (4), characterized in that; An inner cylinder (3) is installed inside the outer cylinder (1), an air mixing chamber (4) is provided between the outer cylinder (1) and the inner cylinder (3), and a nozzle (2) is provided between the top end of the outer cylinder (1) and the top end of the inner cylinder (3).

2. An induced blower using compressed air as power as claimed in claim 1, characterized in that; The top end of the outer cylinder (1) is provided with a convex head.

3. An induced blower using compressed air as power as claimed in claim 1 or 2, characterized in that; The inner tube (3) is provided with a convex head at the top end, and a nozzle (2) is formed between the convex head provided at the top end of the inner tube (3) and the convex head provided at the top end of the outer tube (1).

4. An induced blower using compressed air as power as claimed in claim 1, characterized in that; An air intake pipe (5) is mounted on the outer cylinder (1), and the air intake pipe (5) is connected to the air mixing chamber (4).

Images