Fan pipeline for realizing noise reduction by breaking sound transmission path

By designing a sound insulation cladding on the fan pipeline, the combination of damping plate, rock wool layer, glass wool layer, sound insulation felt and outer guard plate is used to interrupt the sound propagation path, solve the noise problem of fan pipeline, achieve noise reduction effect, and improve the quality of life.

CN222924632UActive Publication Date: 2025-05-30HUNAN HUADIAN PINGJIANG POWER GENERATION CO LTD
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Patent Information

Application Number
CN202421863558.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-02
Publication Date
2025-05-30
Estimated Expiration
2034-08-02

AI Technical Summary

Technical Problem

The fan duct produces a lot of noise during operation, affecting people's rest and health.

Method used

A fan duct is designed, using a sound insulation cladding layer, including a shell fixed cladding layer and a sound insulation movable block. Through the combination of damping plate, rock wool layer, glass wool layer, sound insulation felt and outer guard plate, the sound transmission path is interrupted and noise is blocked.

Benefits of technology

Effectively reduce the noise level of fan pipelines, prevent noise from affecting people's daily lives, and improve quality of life.

✦ Generated by Eureka AI based on patent content.

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    Figure CN222924632U_ABST
Patent Text Reader

Abstract

The utility model relates to the technical field of pipeline equipment, in particular to a fan pipeline capable of reducing noise by breaking a sound transmission path, which comprises a pipe body and a sound insulation coating layer, the sound insulation coating layer comprises a shell fixed coating layer and a sound insulation movable block, the shell fixing wrapping layers and the sound insulation movable block are used for conducting wrapping sound insulation on different positions of the pipe body, and the two sides of the sound insulation movable block are connected with the two shell fixing wrapping layers in a connected mode respectively. According to the fan pipeline noise reduction device, noise reduction treatment is conducted on the fan pipeline, and then the situation that a large amount of noise is generated by the fan pipeline in the daily working process and affects the daily life of people can be effectively prevented.
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Claims

1. A fan duct that achieves noise reduction by interrupting the sound propagation path, characterized in that: It includes a pipe body (1) and a sound insulation coating layer (2). The sound insulation coating layer (2) includes a housing fixed coating layer (21) and sound insulation movable blocks (22). The housing fixed coating layer (21) and the sound insulation movable blocks (22) are used for coating and insulating different positions of the pipe body (1), and both sides of the sound insulation movable blocks (22) are respectively connected and joined to the two housing fixed coating layers (21).

2. The fan duct for achieving noise reduction by interrupting the sound propagation path according to claim 1, characterized in that: The housing fixed coating layer (21) includes a damping plate (211), a rock wool layer (212), and a glass wool layer (213). The damping plate (211), the rock wool layer (212), and the glass wool layer (213) coat the pipe body (1) in sequence from the inside outwards.

3. The fan duct for achieving noise reduction by interrupting the sound propagation path according to claim 2, characterized in that: A sound insulation felt (214) is additionally provided at the top of the glass wool layer (213).

4. The fan duct for achieving noise reduction by interrupting the sound propagation path according to claim 3, characterized in that: An outer protection plate (215) is additionally provided above the sound insulation felt (214). A rubber strip is installed between the outer protection plate (215) and the skeleton of the pipe body (1). The surface of the outer protection plate (215) is galvanized treated.

5. The fan duct for achieving noise reduction by interrupting the sound propagation path according to claim 4, characterized in that: The top of the damping plate (211) is provided with an adhesive.

6. The fan duct for achieving noise reduction by interrupting the sound propagation path according to claim 4, characterized in that: The sound insulation movable blocks (22) are composed of the sound insulation felt (214) and the rock wool layer (212). The sound insulation felt (214) is integrally in a "U" - shaped structure. The rock wool layer (212) is filled between the sound insulation felt (214) and the outer protection plate (215). The left and right sides at the top of the sound insulation felt (214) are integrally bent and extended in directions away from each other and are connected to the outer protection plate (215) on the pipe body (1) on both sides of the sound insulation felt (214).

7. The fan duct for achieving noise reduction by interrupting the sound propagation path according to claim 6, characterized in that: The sound insulation felt (214) and the outer protection plate (215) are reinforced by a magic tape (3).

8. The fan duct for achieving noise reduction by interrupting the sound propagation path according to claim 7, characterized in that: A sound - breaking bridge (4) structure is additionally provided on the housing fixed coating layer (21). The sound - breaking bridge (4) structure is composed of multiple radial keels. The multiple radial keels are segmented. The multiple radial keels are connected by bolts into a complete ring section. A damping plate (211) is installed between the radial keels and the pipe wall of the pipe body (1).