Noise reduction equipment for warm ventilation pipe

Abstract

The utility model relates to the technical field of warm ventilation pipes, and discloses noise reduction equipment for a warm ventilation pipe, which comprises a protective pipe, the warm ventilation pipe is arranged in the protective pipe, a noise reduction component is arranged on the warm ventilation pipe, the left side of the warm ventilation pipe is fixedly connected with a fixed frame, and a filter screen is fixedly mounted on the outer side of the fixed frame. A mounting assembly is arranged in the protection pipe, a first mounting frame is fixedly connected to the left side of the protection pipe, a second mounting frame is fixedly connected to the right side of the protection pipe, and connecting assemblies are arranged in the first mounting frame and the second mounting frame. During use, the sound insulation cotton on the inner wall of the warm ventilation pipe converts sound energy of noise sound waves into heat energy to be absorbed by means of the pore structure of the sound insulation cotton, and noise is preliminarily reduced; the zigzag sound insulation plate on the outer side and the inner wall of the protection pipe form a complex sound insulation channel, noise is reflected for multiple times in the zigzag structure after penetrating through the warm ventilation pipe, and sound energy is continuously consumed.

Description

Technical Field

[0001] This utility model relates to the field of heating and ventilation duct technology, and in particular to a noise reduction device for heating and ventilation ducts. Background Technology

[0002] The standard usage of noise is "noise". From a physiological point of view, any sound that interferes with people's rest, study and work, or interferes with the sounds that people want to hear, i.e. unwanted sounds, is collectively called noise. When noise has an adverse effect on people and the surrounding environment, it is considered noise.

[0003] When the air is discharged from the heating and ventilation duct, some noise is generated. In order to reduce the noise and minimize its impact on the outside world, staff will use noise reduction equipment to reduce the noise.

[0004] However, traditional noise reduction devices mainly rely on single sound insulation materials, such as simple foam sound insulation materials or thin sound insulation felt, which have limited noise reduction effects. With the increasing requirements for noise control, this single noise reduction method cannot meet the increasingly stringent environmental noise standards and users' demand for a quiet environment. When multiple HVAC ducts are connected to form a complex ventilation system, professional tools and a long time are required to complete the work, which increases the installation cost and time cost. At the same time, most HVAC ducts are at a fixed height and cannot be flexibly adjusted according to different installation scenarios and space constraints. Once the installation environment changes, such as changes in ceiling height or uneven ground, it is difficult to ensure the levelness and stability of the HVAC ducts, which in turn affects the ventilation effect and equipment life.

[0005] Therefore, a noise reduction device for HVAC ducts is provided to solve the problems mentioned in the background art. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a noise reduction device for HVAC ducts, aiming to improve the existing technology that mainly relies on a single sound insulation material, such as simple foam sound insulation material or thin sound insulation felt, which has limited noise reduction effect. When multiple HVAC ducts are connected to form a complex ventilation system, professional tools and a long time are required to complete the work, which increases the installation cost and time cost. At the same time, most HVAC ducts are at a fixed height and cannot be flexibly adjusted according to different installation scenarios and space constraints. Once the installation environment changes, it is difficult to ensure the levelness and stability of the HVAC ducts, which in turn affects the ventilation effect and equipment life.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a noise reduction device for a heating and ventilation duct, comprising a protective pipe, wherein a heating and ventilation duct is disposed inside the protective pipe, a noise reduction component is disposed on the heating and ventilation duct, a fixing frame is fixedly connected to the left side of the heating and ventilation duct, a filter screen is fixedly installed on the outside of the fixing frame, an installation component is disposed inside the protective pipe, a first installation frame is fixedly connected to the left side of the protective pipe, a second installation frame is fixedly connected to the right side of the protective pipe, a connecting component is disposed inside the first and second installation frames, and a support component is disposed on the upper side of the protective pipe; the noise reduction component includes sound insulation cotton, the sound insulation cotton is fixedly installed on the inner wall of the heating and ventilation duct, and a zigzag sound insulation board is fixedly connected to the outside of the heating and ventilation duct.

[0008] Furthermore, the mounting assembly includes mounting bolts disposed inside the protective tube, and mounting holes are provided inside the fixing frame.

[0009] Furthermore, the connecting assembly includes a docking plate, which is fixedly connected to the left side of the mounting frame one. The mounting frame two has a docking groove inside, and the docking plate has a fixing hole inside. A magnet one is fixedly connected inside the mounting frame one, and a magnet two is fixedly connected to the docking plate.

[0010] Furthermore, the support assembly includes a first connecting seat, which is fixedly connected to the protective tube. A sleeve is rotatably connected inside the first connecting seat, and a telescopic rod is provided inside the sleeve. An insertion rod is provided inside the sleeve, and a limit hole is opened inside the telescopic rod. A second connecting seat is fixedly connected to the upper side of the telescopic rod.

[0011] Furthermore, the docking plate is slidably connected inside the docking groove.

[0012] Furthermore, the mounting bolt is threaded into the interior of the mounting hole.

[0013] Furthermore, magnet one and magnet two are magnetically connected.

[0014] Furthermore, the insertion rod is slidably connected inside the limiting hole.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, during installation, the heating and ventilation pipe is slid into the protective pipe. After reaching the designated position, the heating and ventilation pipe is fixed by screwing the mounting bolts into the mounting holes of the fixing frame. During operation, the sound insulation cotton on the inner wall of the heating and ventilation pipe absorbs the sound energy of noise waves by converting them into heat energy through its porous structure, thus initially reducing the noise. The tortuous sound insulation board on the outer side forms a complex sound insulation channel with the inner wall of the protective pipe. After passing through the heating and ventilation pipe, the noise is reflected multiple times in the tortuous structure, continuously consuming the sound energy.

[0017] 2. In this utility model, when two protective pipes need to be connected, the mating plate of one protective pipe is inserted into the mating groove of the other protective pipe. During the process, magnet one and magnet two attract each other to assist in positioning. After they are in place, bolts are inserted into the fixing holes and tightened to achieve a firm connection. If the height of the protective pipe needs to be adjusted, the position of the insertion rod in the limiting hole is adjusted to change the length of the telescopic rod extending out of the sleeve, thereby changing the height of the protective pipe. The connecting seat two on the upper side of the telescopic rod is connected to the external support structure to ensure that the equipment can be adjusted to a suitable height according to actual needs, ensuring normal operation and stability. Attached Figure Description

[0018] Figure 1 A perspective view of a noise reduction device for a heating and ventilation duct according to this utility model;

[0019] Figure 2 This is a side view of a noise reduction device for heating and ventilation ducts proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the installation frame structure of a noise reduction device for heating and ventilation ducts proposed in this utility model.

[0021] Figure 4 This is a partial structural schematic diagram of a noise reduction device for heating and ventilation ducts proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the noise reduction component structure of a noise reduction device for heating and ventilation ducts proposed in this utility model.

[0023] Legend:

[0024] 1. Protective pipe; 2. Heating and ventilation pipe; 3. Fixing frame; 4. Filter screen; 5. Mounting components; 51. Mounting bolts; 52. Mounting holes; 6. Noise reduction components; 61. Sound insulation cotton; 62. Bending sound insulation board; 7. Support components; 71. Connecting seat one; 72. Connecting seat two; 73. Sleeve; 74. Limiting hole; 75. Insert rod; 76. Telescopic rod; 8. Mounting frame one; 9. Mounting frame two; 10. Connecting components; 101. Butt plate; 102. Butt groove; 103. Fixing hole; 104. Magnet one; 105. Magnet two. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figure 1 , Figure 2 and Figure 5 This utility model provides an embodiment of a noise reduction device for a heating and ventilation duct, comprising a protective pipe 1, a heating and ventilation duct 2 disposed inside the protective pipe 1, a noise reduction component 6 disposed on the heating and ventilation duct 2, a fixing frame 3 fixedly connected to the left side of the heating and ventilation duct 2, a filter screen 4 fixedly installed on the outside of the fixing frame 3, an installation component 5 disposed inside the protective pipe 1, an installation frame 8 fixedly connected to the left side of the protective pipe 1, an installation frame 9 fixedly connected to the right side of the protective pipe 1, a connecting component 10 disposed inside the installation frame 8 and the installation frame 9, and a support component 7 disposed on the upper side of the protective pipe 1; the noise reduction component 6 includes sound insulation cotton 61, which is fixedly installed on the inner wall of the heating and ventilation duct 2, and a curved sound insulation plate 62 fixedly connected to the outside of the heating and ventilation duct 2; the installation component 5 includes installation bolts 51, which are disposed inside the protective pipe 1, and an installation hole 52 is opened inside the fixing frame 3, with the installation bolts 51 threadedly connected inside the installation hole 52;

[0027] By carefully sliding the heating duct 2 into the interior of the protective tube 1 and precisely moving it to the predetermined position, the mounting bolts 51 inside the protective tube 1 are aligned with the pre-drilled mounting holes 52 on the fixing frame 3 and slowly screwed in, thus stably fixing the heating duct 2 and ensuring its stability during operation. After the heating duct 2 is put into operation, the inner wall of the heating duct 2 is firmly adhered with sound insulation cotton 61. The sound insulation cotton 61 has a unique porous structure. When noise carried in the warm air propagates inside the duct, the sound waves will penetrate deep into the sound insulation cotton 61 through these pores. Because the pores are irregularly shaped and filled with air, sound waves propagating within them gradually convert sound energy into heat energy due to air friction and complex reflections and scattering, thus achieving initial noise reduction. A tortuous sound insulation panel 62 is tightly fitted to the outside of the heating and ventilation duct 2. This panel has a unique tortuous shape and fits closely to the inner wall of the protective duct 1, together forming a complex sound insulation channel. When noise passes through the heating and ventilation duct 2 and enters the space formed by the tortuous sound insulation panel 62 and the inner wall of the protective duct 1, it will reflect multiple times within the tortuous structure. During each reflection, the sound wave interacts with the surface of the tortuous sound insulation panel 62, causing some sound energy to be consumed, thereby further reducing the noise intensity and significantly improving the overall noise reduction effect.

[0028] Reference Figure 1 , Figure 3 and Figure 4The connecting component 10 includes a docking plate 101, which is fixedly connected to the left side of the mounting frame 8. The mounting frame 9 has a docking groove 102 inside, and the docking plate 101 has a fixing hole 103 inside. A magnet 104 is fixedly connected inside the mounting frame 8, and a magnet 105 is fixedly connected to the docking plate 101. The docking plate 101 is slidably connected inside the docking groove 102, and the magnet 104 and the magnet 105 are magnetically connected.

[0029] If it is necessary to connect two protective pipes 1 to expand or adjust the equipment layout, the docking plate 101 on the left side of one protective pipe 1 can be slowly inserted along the docking groove 102 of the other protective pipe 1. During the insertion process, the magnet 104 inside the mounting frame 8 will gradually approach the magnet 105 on the docking plate 101. Due to the magnetic attraction between the two, they will automatically align and stick together tightly, completing the initial connection and positioning. After the docking plate 101 is fully inserted into the docking groove 102 and the position is accurate, bolts are inserted into the fixing holes 103 of the docking plate 101 and tightened with tools to achieve a firm connection between the two protective pipes 1, ensuring the sealing and stability of the entire pipeline system.

[0030] Reference Figure 1 and Figure 2 The support component 7 includes a first connecting seat 71, which is fixedly connected to the protective tube 1. A sleeve 73 is rotatably connected inside the first connecting seat 71. A telescopic rod 76 is provided inside the sleeve 73. An insert rod 75 is provided inside the sleeve 73. A limit hole 74 is opened inside the telescopic rod 76. A second connecting seat 72 is fixedly connected to the upper side of the telescopic rod 76. The insert rod 75 is slidably connected inside the limit hole 74.

[0031] When the height of the protective pipe 1 needs to be adjusted, the operator only needs to adjust the position of the insertion rod 75 in the limiting hole 74 according to the actual needs, so as to change the length of the extension rod 76 extending out of the sleeve 73. As the extension length of the extension rod 76 changes, the height of the protective pipe 1 also changes accordingly. On the upper side of the extension rod 76, the connecting seat 2 72 is responsible for connecting with the external support structure. It can adjust the protective pipe 1 and the entire HVAC duct 2 noise reduction equipment to a suitable height according to different installation environments and actual usage needs, so as to ensure that the equipment can operate normally in various scenarios and maintain good stability.

[0032] Working Principle: When using this device, the heating and ventilation duct 2 is slid into the protective tube 1. Once it reaches the designated position, the mounting bolts 51 are turned into the mounting holes 52 inside the fixing frame 3 to fix the heating and ventilation duct 2. When the heating and ventilation duct 2 is running, the inner wall of the heating and ventilation duct 2 is firmly adhered with sound insulation cotton 61. When noise propagates in the duct with the warm air, the sound waves enter these pores, thus converting the sound energy into heat energy and being absorbed, achieving initial noise reduction. On the outside of the heating and ventilation duct 2, a tortuous sound insulation board 62 is attached. The sound insulation board has a unique tortuous shape and fits tightly against the inner wall of the protective tube 1, forming a complex sound insulation channel. When noise passes through the heating and ventilation duct 2, it will be reflected multiple times within the tortuous structure, and each reflection can consume a portion of the sound energy. When two protective pipes 1 need to be connected, the docking plate 101 of one protective pipe 1 is inserted along the docking groove 102 of the other protective pipe 1. At the same time, magnet 104 and magnet 2 105 attract each other. After they are in place, bolts are inserted into the fixing hole 103 and tightened to achieve a firm connection between the two protective pipes 1. When the height of the protective pipe 1 needs to be adjusted, the position of the insertion rod 75 in the limiting hole 74 can be adjusted to change the length of the telescopic rod 76 extending out of the sleeve 73. As the extension length of the telescopic rod 76 changes, the height of the protective pipe 1 also changes accordingly. On the upper side of the telescopic rod 76, the connecting seat 2 72 is responsible for connecting with the external support structure, so that it can be adjusted to a suitable height according to actual needs, thereby ensuring the normal operation and stability of the equipment.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A noise reduction device for heating and ventilation ducts, comprising a protective pipe (1), characterized in that: The protective pipe (1) is provided with a heating and ventilation pipe (2) inside. The heating and ventilation pipe (2) is provided with a noise reduction component (6). A fixed frame (3) is fixedly connected to the left side of the heating and ventilation pipe (2). A filter screen (4) is fixedly installed on the outside of the fixed frame (3). An installation component (5) is provided inside the protective pipe (1). An installation frame one (8) is fixedly connected to the left side of the protective pipe (1). An installation frame two (9) is fixedly connected to the right side of the protective pipe (1). A connecting component (10) is provided inside the installation frame one (8) and the installation frame two (9). A support component (7) is provided on the upper side of the protective pipe (1). The noise reduction component (6) includes sound insulation cotton (61), which is fixedly installed on the inner wall of the heating and ventilation pipe (2), and a tortuous sound insulation board (62) is fixedly connected to the outer side of the heating and ventilation pipe (2).

2. The noise reduction device for heating and ventilation ducts according to claim 1, characterized in that: The mounting assembly (5) includes mounting bolts (51), which are disposed inside the protective tube (1), and mounting holes (52) are provided inside the fixing frame (3).

3. The noise reduction device for heating and ventilation ducts according to claim 2, characterized in that: The connecting assembly (10) includes a docking plate (101), which is fixedly connected to the left side of the mounting frame one (8). The mounting frame two (9) has a docking groove (102) inside, and the docking plate (101) has a fixing hole (103) inside. A magnet one (104) is fixedly connected inside the mounting frame one (8), and a magnet two (105) is fixedly connected on the docking plate (101).

4. The noise reduction device for heating and ventilation ducts according to claim 2, characterized in that: The support assembly (7) includes a first connecting seat (71), which is fixedly connected to the protective tube (1). A sleeve (73) is rotatably connected inside the first connecting seat (71). A telescopic rod (76) is provided inside the sleeve (73). An insert rod (75) is provided inside the sleeve (73). A limit hole (74) is opened inside the telescopic rod (76). A second connecting seat (72) is fixedly connected to the upper side of the telescopic rod (76).

5. A noise reduction device for heating and ventilation ducts according to claim 3, characterized in that: The docking plate (101) is slidably connected inside the docking groove (102).

6. A noise reduction device for heating and ventilation ducts according to claim 2, characterized in that: The mounting bolt (51) is threaded into the mounting hole (52).

7. A noise reduction device for heating and ventilation ducts according to claim 3, characterized in that: The first magnet (104) and the second magnet (105) are magnetically connected.

8. A noise reduction device for heating and ventilation ducts according to claim 4, characterized in that: The insertion rod (75) is slidably connected inside the limiting hole (74).

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