A heating ventilation duct noise reduction structure

Abstract

The utility model relates to the technical field of warm air pipe, and disclose a warm air pipe noise reduction structure, including air duct pipe, the air duct pipe left end is provided with the adapter pipe, the adapter pipe left end fixedly connected with square pipe, the square pipe inner wall left side fixedly connected with filter screen board no.

Description

Technical Field

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

[0002] Heating, ventilation and air conditioning (HVAC) ducts are pipes that transport air in HVAC systems. Through proper layout, they connect air conditioning equipment to indoor air vents to achieve the delivery of hot and cold air, air circulation and ventilation, ensuring indoor temperature, humidity and air quality. They are widely used in buildings, industries and other places.

[0003] Nowadays, there are many types of HVAC ducts on the market, but most of them are just variations in form. In the operation of HVAC systems, the noise problem of ducts is becoming increasingly prominent. This is due to the vibration of components caused by airflow disturbance, or the insufficient sound insulation performance of materials, which leads to noise transmission into the room and affects the comfort of the environment.

[0004] In order to reduce the noise generated by the heating and ventilation duct during operation and reduce the impact on environmental comfort, this application proposes a noise reduction structure for the heating and ventilation duct. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a noise reduction structure for heating and ventilation ducts, which reduces the impact on environmental comfort and weakens the noise generated by the heating and ventilation ducts during operation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a noise reduction structure for a heating and ventilation duct, comprising a duct pipe, a connecting pipe at the left end of the duct pipe, a square pipe fixedly connected to the left end of the connecting pipe, a filter plate two fixedly connected to the left side of the inner wall of the square pipe, a plurality of dividing frames fixedly connected to the middle of the inner wall of the square pipe, a sound-absorbing pad fixedly connected to one side of the outer wall of each dividing frame, a sound-absorbing cotton ring fixedly connected to the inner wall of the connecting pipe, a barrier ring one fixedly connected to the right side of the sound-absorbing cotton ring on the inner wall of the connecting pipe, and a filter plate one disposed to the right side of the barrier ring one on the inner wall of the connecting pipe.

[0007] Further description: A second barrier ring is fixedly connected to the left side of the inner wall of the air duct, and a sealing groove is opened at the left end of the air duct; here, the other end of the air duct leads to the room and connects with a dedicated HVAC equipment.

[0008] Further description: A sealing ring is fixedly connected to the right end of the adapter pipe. The shape of the outer wall of the sealing ring matches the shape of the inner wall of the sealing groove. Here, the surface of the sealing ring has a certain elasticity. After being inserted into the sealing groove, it will fit against the inner wall of the sealing groove.

[0009] Further description: A socket block is fixedly connected to the left side of the front end of the air duct. The inner wall of the socket block is provided with a fitting groove. The right end of the socket block is provided with notches on both the upper and lower sides of the fitting groove. Here, the inner wall of the fitting groove is through, and notches are provided at both its upper and lower ends.

[0010] Further description: A folded block is fixedly connected to the right side of the front end of the air duct, and the shape of the right end of the folded block matches the shape of the inner wall of the fitting groove; here, the folded block has a bend at one point, and the bend angle is 90°.

[0011] Further description: The inner walls of the right sides at both ends of the folded block are slidably connected with locking blocks, and the shape of the outer wall of the locking blocks matches the shape of the inner wall of the notch groove; here, when the folded block is locked in the fitting groove, the locking blocks will lock in the notch groove to produce a limiting effect.

[0012] Further description: Each of the card blocks has a spring fixedly connected to the inner wall of one opposite end, and each spring has a fixed connection to the inner wall of the folded block at one opposite end; here, the spring will generate elastic potential energy after being subjected to force, so as to drive the card block to reset.

[0013] Further description: The inner walls of the air duct and the transfer pipe are of equal diameter, and the outer wall of the filter plate is the same as the inner wall of the transfer pipe; here, the outer wall of the filter plate fits perfectly against the inner wall of the transfer pipe.

[0014] Beneficial effects:

[0015] 1. In this utility model, the combination of the adapter pipe, square pipe, dividing frame, sound-absorbing pad, and sound-absorbing cotton ring creates a certain resistance to the airflow before it enters the duct, preventing the airflow speed from being too fast and generating excessively high noise. At the same time, the material properties of the sound-absorbing pad and sound-absorbing cotton ring are used to weaken the noise, thereby ensuring that the noise inside the duct does not easily affect the comfort of the environment.

[0016] 2. In this utility model, the quick connection and disassembly between the air duct pipe and the adapter pipe are realized through the cooperation of the folding block, the locking block, the spring, the sleeve block, the fitting groove, and the notch groove, and the operation of removing the adapter pipe is convenient when cleaning the filter screen plate one and the filter screen plate two in the future. Attached Figure Description

[0017] Figure 1 This is a perspective view of a noise reduction structure for a heating and ventilation duct according to the present invention;

[0018] Figure 2 This is a cross-sectional view of the air duct of the noise reduction structure of the heating and ventilation duct of this utility model;

[0019] Figure 3 This is a cross-sectional view of a square tube representing a noise reduction structure for a heating and ventilation duct according to this utility model.

[0020] Figure 4 This is a half-sectional view of the folded block of a noise reduction structure for a heating and ventilation duct according to this utility model;

[0021] Figure 5 This is a schematic diagram of the socket block structure of a noise reduction structure for a heating and ventilation duct according to the present invention.

[0022] In the diagram: 1. Ductwork; 2. Adaptor pipe; 3. Square pipe; 4. Connecting block; 5. Folded block; 6. Noise-absorbing cotton ring; 7. Barrier ring one; 8. Filter plate one; 9. Barrier ring two; 10. Sealing ring; 11. Divider frame; 12. Noise-absorbing pad; 13. Filter plate two; 14. Locking block; 15. Spring; 16. Fitting groove; 17. Notch groove. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] Please see Figures 1-3 A noise reduction structure for a heating and ventilation duct includes a duct pipe 1, a connecting pipe 2 at the left end of the duct pipe 1, a square pipe 3 fixedly connected to the left end of the connecting pipe 2, a filter plate 13 fixedly connected to the left side of the inner wall of the square pipe 3, several dividing frames 11 fixedly connected to the middle of the inner wall of the square pipe 3, a sound-absorbing pad 12 fixedly connected to one side of the outer wall of each dividing frame 11, a sound-absorbing cotton ring 6 fixedly connected to the inner wall of the connecting pipe 2, a barrier ring 7 fixedly connected to the right side of the sound-absorbing cotton ring 6 on the inner wall of the connecting pipe 2, a filter plate 8 set to the right side of the barrier ring 7 on the inner wall of the connecting pipe 2, a barrier ring 9 fixedly connected to the left side of the inner wall of the duct pipe 1, a sealing groove opened at the left end of the duct pipe 1, and a sealing ring 10 fixedly connected to the right end of the connecting pipe 2, the shape of the outer wall of the sealing ring 10 matching the shape of the inner wall of the sealing groove;

[0026] To further explain, during the operation of the heating and ventilation duct 1, outside air enters the system from the square tube 3 in the form of airflow. The first process is that the filter plate 13 performs preliminary filtration on the airflow, intercepting large dust particles to prevent them from entering the subsequent system and affecting equipment operation and air quality. The airflow that has completed preliminary filtration continues to move forward and flows through several dividers 11. The dividers 11 divide the airflow into multiple airflows, increasing the contact area between the airflow and the pipe wall, generating moderate resistance, effectively slowing down the airflow velocity, and avoiding high-intensity noise caused by excessive flow velocity.

[0027] Next, the airflow comes into close contact with the sound-absorbing pad 12. The sound-absorbing pad 12 is made of a special sound-absorbing material, which can absorb and dissipate the noise energy generated by the airflow movement, thus initially weakening the noise. When the airflow flows into the transfer pipe 2, it comes into contact with the internal sound-absorbing cotton ring 6. The sound-absorbing cotton ring 6, with its porous structure and sound-absorbing properties, further absorbs and attenuates the noise. After double noise reduction treatment, the noise intensity of the airflow is greatly reduced. Subsequently, the airflow passes through the filter screen 8, which is the secondary filtration stage. It further intercepts residual tiny particles to ensure that the cleanliness of the airflow entering the HVAC equipment meets the standards. The purified airflow is heated by the HVAC equipment and finally delivered to the room to create a comfortable environment for users.

[0028] Example 2

[0029] Please see Figures 4-5 Further, based on Embodiment 1, a sleeve block 4 is fixedly connected to the left side of the front end of the air duct 1. The inner wall of the sleeve block 4 is provided with a fitting groove 16. The right end of the sleeve block 4 is provided with notches 17 on both the upper and lower sides of the fitting groove 16. A folded block 5 is fixedly connected to the right side of the front end of the air duct 1. The shape of the right end of the folded block 5 matches the shape of the inner wall of the fitting groove 16. The inner walls of the upper and lower ends of the folded block 5 are slidably connected with locking blocks 14. The shape of the outer wall of the locking blocks 14 matches the shape of the inner wall of the notches 17. A spring 15 is fixedly connected to the inner wall of the opposite end of the locking blocks 14. The opposite end of the spring 15 is fixedly connected to the inner wall of the folded block 5. The diameters of the inner walls of the air duct 1 and the adapter pipe 2 are equal. The diameter of the outer wall of the filter plate 8 is the same as the diameter of the inner wall of the adapter pipe 2.

[0030] To further explain, in terms of daily maintenance, cleaning the filter screen is crucial. By pressing the two locking blocks 14, the locking blocks 14 will slide in the notch groove 17 and gradually retract into the folded block 5. During this process, the spring 15 is compressed and deformed. When the locking blocks 14 are fully retracted into the folded block 5, the limiting constraint between the folded block 5 and the sleeve block 4 is released. At this time, by holding the handle on one side of the square tube 3 and pulling it outward, the adapter pipe 2 will also separate from the air duct 1. The sealing ring 10 will disengage from the sealing groove at the end of the air duct 1. After successfully separating the adapter pipe 2 and the square tube 3, the filter screen 1 8 can be poured out directly from the adapter pipe 2. At this time, the filter screen 1 8 and the filter screen 2 13 can be thoroughly cleaned to remove the attached dust and impurities in a timely manner, ensuring the air circulation efficiency and purification effect of the ventilation system.

[0031] Working principle: First, during use, outside air enters the square tube 3 through the duct 1, and first passes through the filter screen 13 to filter out large dust particles. Then, the airflow passes through several dividers 11, which separate the airflow and create resistance, thus preventing excessive noise due to excessive airflow speed. At the same time, the airflow brushes against the sound-absorbing pad 12, and the material of the sound-absorbing pad 12 weakens the noise generated by the airflow. When the airflow flows into the transfer tube 2, it comes into contact with the sound-absorbing cotton ring 6, which further weakens the noise. After that, the noise-reduced airflow passes through the filter screen 8 and undergoes secondary filtration to improve the cleanliness of the airflow. The airflow after secondary filtration enters the HVAC equipment through the duct 1 for heating and is then delivered to the indoor environment.

[0032] By pressing the two locking blocks 14, they slide in the inner wall of the notch groove 17 and retract into the folded block 5. At the same time, the spring 15 is compressed. After the locking blocks 14 are completely retracted into the folded block 5, the limiting relationship between the folded block 5 and the sleeve block 4 is released. Then, hold the handle on one side of the square tube 3 and drag it outward, along with the adapter pipe 2 away from one end of the air duct pipe 1. At this time, the sealing ring 10 is disengaged from the sealing groove at one end of the air duct pipe 1. After the adapter pipe 2 and the square tube 3 are removed from one end of the air duct pipe 1, the filter screen plate 18 can be poured out directly from the adapter pipe 2. Then, clean the surfaces of the filter screen plate 18 and the filter screen plate 23 respectively to avoid excessive dust and impurities adhering to the filter screen plate 18 and the filter screen plate 23, which would affect the air circulation.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A structure for reducing noise of a heating and ventilating duct, comprising a duct pipe (1), characterized in that: The left end of the air duct pipe (1) is provided with an adapter pipe (2), the left end of the adapter pipe (2) is fixedly connected with a square pipe (3), the left side of the inner wall of the square pipe (3) is fixedly connected with a filter screen plate two (13), the middle of the inner wall of the square pipe (3) is fixedly connected with a plurality of partition frames (11), one side of the outer wall of the partition frame (11) is fixedly connected with a sound-absorbing pad (12), the inner wall of the adapter pipe (2) is fixedly connected with a sound-absorbing cotton ring (6), the right side of the inner wall of the adapter pipe (2) is fixedly connected with a blocking ring one (7), the right side of the inner wall of the adapter pipe (2) is provided with a filter screen plate one (8).

2. The structure for reducing noise of a heating and ventilating duct according to claim 1, wherein: The left side of the inner wall of the air duct pipe (1) is fixedly connected with a blocking ring two (9), and the left end of the air duct pipe (1) is provided with a sealing groove.

3. The HVAC duct noise reduction structure of claim 1, wherein: The right end of the adapter pipe (2) is fixedly connected with a sealing ring (10), and the shape of the outer wall of the sealing ring (10) is matched with the shape of the inner wall of the sealing groove.

4. The HVAC duct noise reduction structure of claim 1, wherein: The left side of the front end of the air duct pipe (1) is fixedly connected with a sleeve block (4), the inner wall of the sleeve block (4) is provided with a fitting groove (16), and the right end of the sleeve block (4) is provided with a notch groove (17) on the upper and lower sides of the fitting groove (16).

5. The HVAC duct noise reduction structure of claim 1, wherein: The right side of the front end of the air duct pipe (1) is fixedly connected with a folded block (5), and the shape of the right end of the folded block (5) is matched with the shape of the inner wall of the fitting groove (16).

6. The structure for reducing noise of a heating and ventilating duct according to claim 5, wherein: The right side of the upper and lower ends of the folded block (5) is slidably connected with a clamping block (14), and the shape of the outer wall of the clamping block (14) is matched with the shape of the inner wall of the notch groove (17).

7. The structure for reducing noise of a heating and ventilating duct according to claim 6, wherein: The inner wall of the opposite end of the clamping block (14) is fixedly connected with a spring (15), and the opposite end of the spring (15) is fixedly connected to the inner wall of the folded block (5).

8. The HVAC duct noise reduction structure of claim 1, wherein: The diameters of the inner walls of the air duct pipe (1) and the adapter pipe (2) are equal, and the diameter of the outer wall of the filter screen plate one (8) is the same as the diameter of the inner wall of the adapter pipe (2).

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