Variable-diameter air duct sound attenuation structure

Abstract

This utility model discloses a variable diameter air duct noise reduction structure, including: an air duct body and a noise reduction component. The variable diameter air duct noise reduction structure of this utility model features a glass wool tube installed within the air duct body, which converts sound energy into heat energy, thereby reducing noise within the air duct body. The support frame installed at the inner end of the glass wool tube, and the support arc plates arranged at the outer end of the support frame, also support the inner end of the glass wool tube during use, ensuring its stability. Simultaneously, multiple sets of easily detachable support arc plates within the air duct body facilitate the installation and replacement of the outer glass wool tube. The support frame and support arc plates at the inner end of the glass wool tube, along with the heat dissipation ring at the outer end of the air duct body, are all made of thermally conductive copper, which can transfer the heat generated by the glass wool tube during use between the inner and outer ends, thereby reducing the temperature at the inner and outer ends of the glass wool tube and improving its service life.

Description

Technical Field

[0001] This utility model relates to the field of air duct technology, specifically to a noise reduction structure for a variable diameter air duct. Background Technology

[0002] Air ducts are dedicated channels for air circulation. Variable diameter air ducts are a type of air duct. Variable diameter air ducts are ventilation structures that optimize airflow distribution and reduce noise by changing the diameter or cross-sectional shape of the pipe. They are widely used in industrial and building ventilation fields.

[0003] Existing variable diameter ducts, such as the active silencer exhaust duct disclosed in publication number CN220470972U, although effective in improving the problem of long installation and disassembly time for active silencer exhaust ducts, have the problem that the active silencer and sound-absorbing cotton installed at the inner end of the exhaust duct are not convenient for wrapping the inner end of the duct for sound absorption, and the inner end of the active silencer and sound-absorbing cotton is also not convenient for uniform support. Therefore, we propose a variable diameter duct sound absorption structure. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows:

[0006] A variable diameter duct noise reduction structure includes: a duct body and a noise reduction component; the duct body includes a first mounting hole and a second mounting hole respectively opened at both ends; the noise reduction component includes a glass wool tube movably installed inside the duct body, multiple sets of support frames movably arranged and installed inside the glass wool tube, support arc plates arranged and fixedly installed on the support frames, multiple sets of heat dissipation rings arranged and fixedly installed outside the duct body, and a fixing ring fixedly installed on one side inside the duct body.

[0007] Preferably, each of the support frames is also fixedly installed with a fixing ear at one end, and each of the air duct bodies is also provided with a bayonet arranged at one end, and the bayonet matches the fixing ear.

[0008] Preferably, each of the bayonet slots has a card hole on one side, and each of the fixing ears has a card post fixedly installed on one end, with the card post and card hole being matched.

[0009] Preferably, the fixing ring is further provided with slots, and one end of the support frame is movably matched and installed in the slots.

[0010] Preferably, the support frame, the support arc plate, and the heat dissipation ring are all made of copper.

[0011] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0012] 1. In this utility model, the glass wool tube installed inside the duct body can convert sound energy into heat energy, thereby reducing the noise inside the duct body. The support frame installed at the inner end of the glass wool tube and the support arc plates arranged at the outer end of the support frame can also support the inner end of the glass wool tube in use to ensure its stability during use. At the same time, the multiple sets of easily detachable support arc plates inside the duct body can also facilitate the installation and replacement of the glass wool tube at its outer end.

[0013] 2. In this utility model, the support frame and support arc plate at the inner end of the glass wool tube and the heat dissipation ring at the outer end of the air duct body are all made of copper with good thermal conductivity. This allows the heat generated during the use of the glass wool tube to be transferred between the inner and outer ends, thereby reducing the temperature at the inner and outer ends of the glass wool tube and improving its service life. Attached Figure Description

[0014] Figure 1 This is an overall structural diagram of the present invention;

[0015] Figure 2 This is another perspective view of the present invention;

[0016] Figure 3 This is a side sectional view of the present invention;

[0017] Figure 4 This is a structural diagram of the support frame of this utility model;

[0018] Figure 5 This is a structural diagram of the glass wool tube of this utility model;

[0019] Figure 6 This utility model Figure 3 Enlarged view of A in the middle;

[0020] Figure 7 This utility model Figure 3 A magnified view of B in the middle.

[0021] Figure label:

[0022] 100. Air duct body; 101. First mounting hole; 102. Second mounting hole;

[0023] 200. Noise-absorbing component; 201. Glass wool tube; 202. Support frame; 203. Support arc plate; 204. Heat dissipation ring; 205. Fixing ring; 206. Fixing ear; 207. Bayonet; 208. Card hole; 209. Card post; 210. Card slot. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0025] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a variable diameter air duct noise reduction structure.

[0026] Example 1:

[0027] Combination Figure 1-7 As shown, the present invention provides a variable diameter duct noise reduction structure, comprising: a duct body 100 and a noise reduction component 200; the duct body 100 includes a first mounting hole 101 and a second mounting hole 102 respectively opened at both ends; the noise reduction component 200 includes a glass wool tube 201 movably installed inside the duct body 100, multiple sets of support frames 202 movably arranged and installed at the inner end of the glass wool tube 201, support arc plates 203 fixedly arranged and installed on the support frames 202, multiple sets of heat dissipation rings 204 fixedly arranged and installed at the outer end of the duct body 100, and a fixed component on one side inside the duct body 100. The fixed ring 205 and the support frame 202 are each fixedly installed with a fixed ear 206 at one end. The air duct body 100 is also provided with a bayonet 207 at one end, and the bayonet 207 matches the fixed ear 206. A slot 208 is also provided on one side of the bayonet 207. A post 209 is fixedly installed at one end of the fixed ear 206, and the post 209 matches the slot 208. A slot 210 is also provided in the fixed ring 205. One end of the support frame 202 is movably matched and installed in the slot 210. The support frame 202, the support arc plate 203 and the heat dissipation ring 204 are all made of copper.

[0028] Specifically, an air duct is a dedicated channel for air circulation. A variable-diameter air duct is a type of air duct that optimizes airflow distribution and reduces noise by changing the pipe diameter or cross-sectional shape. The glass wool cylinder 201 installed inside the air duct body 100 converts sound energy within the air duct body 100 into heat energy, thereby reducing noise during operation. Furthermore, the support frame 202 installed at the inner end of the glass wool cylinder 201, and the support arc plates 203 arranged at the outer end of the support frame 202, can also... The glass wool tube 201 is supported at its inner end during use to ensure its stability. Meanwhile, multiple sets of easily detachable support arc plates 203 within the duct body 100 facilitate the installation and replacement of the outer glass wool tube 201. The support frame 202 and support arc plates 203 at the inner end of the glass wool tube 201, along with the heat dissipation ring 204 at the outer end of the duct body 100, are all made of thermally conductive copper. This allows for the transfer of heat generated during use between the inner and outer ends of the glass wool tube 201, thereby reducing heat loss at both ends. To improve its service life, the heat transferred from the glass wool tube 201 by the support frame 202 and support arc plate 203 at the inner end of the glass wool tube 201 will be carried away by the airflow within the air duct body 100. The heat dissipation ring 204 at the outer end of the air duct body 100 will dissipate the heat from the glass wool tube 201 to the outside after it has been transferred. The support arc plate 203 on the support frame 202 also ensures stable and uniform support for the inner end of the glass wool tube 201. The slot 210 in the fixing ring 205... The bayonet 207 and the locking hole 208 opened at one end of the air duct body 100 are mainly for facilitating the positioning and locking installation of the support frame 202. The first mounting hole 101 and the second mounting hole 102 opened at both ends of the air duct body 100 are mainly for facilitating the connection of external air ducts at both ends of the air duct body 100. After the second mounting hole 102 is connected to the external air duct, the fixing ear 206 at one end of the support frame 202 can also be pressed, thereby ensuring the overall stability of the support frame 202 and thus stably supporting the glass wool cylinder 201.

[0029] Working principle and usage process of this utility model:

[0030] During use, the noise generated by the airflow at the inner end of the duct body 100 is absorbed into the outer enclosed glass wool tube 201 to reduce the noise during use. The support frame 202 installed at the inner end of the glass wool tube 201 can evenly support the inner end of the glass wool tube 201 to ensure its stability during use. It can also work with the heat dissipation ring 204 at the outer end to transfer the heat generated by the absorption of noise at the inner end of the glass wool tube 201, thereby dissipating the heat at the inner end of the duct body 100 to reduce the heat at the inner end of the glass wool tube 201 during sound absorption, so that the glass wool tube 201 maintains a good sound absorption effect during use.

[0031] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A noise reduction structure for a variable diameter air duct, characterized in that, include: Duct body (100), noise reduction assembly (200); The air duct body (100) includes a first mounting hole (101) and a second mounting hole (102) respectively opened at both ends; The noise reduction assembly (200) includes a glass wool tube (201) movably installed inside the air duct body (100), multiple sets of support frames (202) movably arranged and installed at the inner end of the glass wool tube (201), support arc plates (203) arranged and fixedly installed on the support frames (202), multiple sets of heat dissipation rings (204) arranged and fixedly installed at the outer end of the air duct body (100), and a fixing ring (205) fixedly installed on one side inside the air duct body (100).

2. The variable diameter duct noise reduction structure according to claim 1, characterized in that, The support frame (202) is also fixedly installed with a fixing ear (206) at one end, and the air duct body (100) is also provided with a bayonet (207) at one end, and the bayonet (207) matches the fixing ear (206).

3. The variable diameter duct noise reduction structure according to claim 2, characterized in that, Each of the bayonet slots (207) is provided with a card hole (208) on one side, and each of the fixing ears (206) is fixedly installed with a card post (209) at one end, and the card post (209) and the card hole (208) are matched.

4. The variable diameter duct noise reduction structure according to claim 1, characterized in that, The fixing ring (205) is also provided with slots (210), and one end of the support frame (202) is movably matched and installed in the slots (210).

5. The variable diameter duct noise reduction structure according to claim 1, characterized in that, The support frame (202), the support arc plate (203), and the heat dissipation ring (204) are all made of copper.

Images