Low-noise ventilator with wave-shaped noise elimination structure

Abstract

The invention discloses a low-noise ventilator with a wave-shaped noise elimination structure, belongs to the technical field of ventilation equipment, and aims to solve the problem that the aerodynamic noise and the eddy noise are relatively large when the existing ventilation equipment runs. The ventilator comprises a current collector, a rectification streamline cover, a first-stage explosion-proof motor, a second-stage explosion-proof motor, a first-stage main cylinder, a second-stage main cylinder, a first-stage impeller, a second-stage impeller, an outlet streamline body and a wave-shaped surface structure silencer. The rectification streamline cover and the outlet streamline body are matched to form a smooth flow channel in the ventilator, airflow can be effectively guided to flow stably, airflow collision and vortex generation are reduced, and therefore aerodynamic noise and vortex noise are reduced. The silencer with the wave-shaped surface structure is arranged in a flow channel of the ventilator, the perforated silencing plate is arranged on the surface of the silencer and is wave-shaped, noise energy is obviously absorbed by increasing the sound absorption area and the sound wave reflection path, and the overall noise of the ventilator is further reduced.

Description

Technical Field

[0001] This invention belongs to the field of ventilation equipment technology, and in particular relates to a low-noise ventilator with a wave-shaped sound-absorbing structure. Background Technology

[0002] Ventilation equipment is an indispensable and important piece of equipment for ventilation in underground roadways of coal mines. It is used in large quantities and has a wide range of applications. It undertakes important tasks such as providing fresh air to the mining face, expelling toxic and harmful gases and dust, and improving the environmental conditions of the workplace.

[0003] Traditional underground ventilation equipment in coal mines uses a three-phase asynchronous motor directly connected to a rotating impeller, which is installed inside the fan casing. The motor drives the impeller to rotate, and the blades generate airflow and pressure through interaction with the air. At the same time, the rotation of the impeller and the cutting of the airflow by the blades generate a lot of noise. Although some ventilation equipment is equipped with silencers inside or behind the main unit, the silencers all use a planar surface structure, which has limited noise reduction for the ventilation equipment and cannot effectively reduce noise.

[0004] Based on the above factors, a low-noise ventilator with a wave-shaped sound-absorbing structure is needed. Without altering the original structure of the ventilation equipment, the sound-absorbing structure can be improved to more effectively absorb noise energy and reduce noise. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a low-noise ventilator with a wave-shaped sound-absorbing structure to solve the problem of high noise in the existing ventilation equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This invention discloses a low-noise ventilator with a wave-shaped sound-absorbing structure, comprising: The system includes a collector, a rectifier streamline cover, a Class I explosion-proof motor, a Class II explosion-proof motor, a Class I main cylinder, a Class II main cylinder, a Class I impeller, a Class II impeller, an outlet streamline body, and a wave-shaped surface structure silencer. The drive shafts of the Class I and Class II explosion-proof motors are fixedly connected to hubs, and blades are evenly arranged on the outer edge of the hubs. The Class I and Class II explosion-proof motors drive the Class I and Class II impellers to rotate. The blades generate airflow and pressure through interaction with the air to meet ventilation requirements.

[0007] Preferably, the surface of the wave-shaped surface structure muffler is a uniform, continuous arc-shaped surface forming a wave-shaped structure.

[0008] Preferably, the wave-shaped surface structure silencer uses a perforated silencer plate lined with ultra-fine glass fiber.

[0009] The present invention achieves the following technical effects compared to the prior art: The present invention discloses a low-noise ventilator silencer with a wave-shaped sound-absorbing structure. The surface structure is wave-shaped, which increases the surface area on the basis of the same length silencer compared with the planar surface structure, and can increase the noise contact surface more widely.

[0010] The wave-shaped surface structure silencer of the present invention uses a perforated silencer plate. Compared with the planar surface structure perforated silencer plate, the wave-shaped surface structure perforated silencer plate can accommodate more perforations. The perforated plate is lined with ultra-fine glass fiber, which can better attenuate and absorb noise energy by continuously reflecting noise, thus effectively reducing noise. Attached Figure Description

[0011] To make the embodiments and technical solutions of the present invention clearer, the present invention is illustrated with the following drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of a low-noise ventilator with a wave-shaped sound-absorbing structure in this embodiment.

[0013] Explanation of reference numerals in the attached drawings: 1. Collector; 2. Rectifier streamline cover; 3. Class I explosion-proof motor; 4. Class I main cylinder; 5. Class I impeller; 6. Class II impeller; 7. Class II main cylinder; 8. Class II explosion-proof motor; 9. Outlet streamline; 10. Rear silencer. Detailed Implementation

[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0015] The purpose of this invention is to provide a low-noise ventilator with a wave-shaped sound-absorbing structure to solve the problem of high noise in existing ventilation equipment.

[0016] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] like Figure 1As shown, this embodiment provides a low-noise ventilator with a wave-shaped silencing structure, comprising a collector, a streamlined shroud, a Class I explosion-proof motor, a Class II explosion-proof motor, a Class I main cylinder, a Class II main cylinder, a Class I impeller, a Class II impeller, an outlet streamline, and a wave-shaped surface structure silencer. The drive shafts of the Class I and Class II explosion-proof motors are fixedly connected to hubs, and blades are evenly arranged on the outer edge of the hubs. The Class I and Class II explosion-proof motors drive the Class I and Class II impellers to rotate. The blades generate airflow and pressure through interaction with the air, thus achieving ventilation requirements.

[0018] When in use, the ventilation equipment with noise reduction function is powered on by Class I and Class II explosion-proof motors respectively, which drive Class I and Class II impellers to rotate, forming a unidirectional airflow. The airflow flows into the ventilation equipment channel from the collector and flows out of the ventilation fan channel from the rear silencer, achieving the effect of unidirectional ventilation.

[0019] To increase the noise contact area, the surface structure of the silencer of the ventilation equipment in this embodiment is wavy, which increases the surface area based on the same length of silencer compared to a planar surface structure.

[0020] To effectively reduce noise, the ventilation equipment in this embodiment uses a perforated plate with a corrugated surface structure. Compared with a planar surface structure perforated plate, the corrugated surface structure perforated plate can accommodate more perforations. Furthermore, the perforated plate is lined with ultra-fine glass fiber, which can better attenuate and absorb noise energy by continuously reflecting noise.

[0021] This specification uses specific examples to illustrate the principles and implementation methods of the invention. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of the invention. Furthermore, those skilled in the art will likely make changes to the specific implementation methods and application scope based on the ideas of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. A low-noise ventilator with a wave-shaped sound-absorbing structure, characterized in that, include: The system includes a collector, a rectifier streamline cover, a Class I explosion-proof motor, a Class II explosion-proof motor, a Class I main cylinder, a Class II main cylinder, a Class I impeller, a Class II impeller, an outlet streamline body, and a wave-shaped surface structure silencer. The drive shafts of the Class I and Class II explosion-proof motors are fixedly connected to hubs, and blades are evenly arranged on the outer edge of the hubs. The Class I and Class II explosion-proof motors drive the Class I and Class II impellers to rotate. The blades generate airflow and pressure through interaction with the air to meet ventilation requirements.

2. A low-noise ventilator with a wave-shaped sound-absorbing structure according to claim 1, characterized in that, The surface of the silencer has a wavy structure, which can increase the surface area and achieve better noise reduction.

3. A low-noise ventilator with a wave-shaped sound-absorbing structure according to claim 1, characterized in that, The wave-shaped surface structure silencer uses a perforated plate lined with ultra-fine glass fiber. The wave-shaped surface structure can accommodate a greater number of perforations, and the ultra-fine glass fiber lining can improve the sound absorption effect.

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