Air outlet noise reduction device of central air conditioner

Abstract

The utility model relates to the field of air conditioner air outlet devices, in particular to a central air conditioner air outlet noise reduction device which comprises an air receiving barrel, a bucket-shaped air expanding cover, an air outlet cover, a noise reduction frame, an air direction guiding frame and a protection frame. A hopper-shaped air expanding cover is arranged at the lower end of the air receiving barrel, an air outlet cover is arranged at the lower end of the hopper-shaped air expanding cover, an embedded groove is formed in the end, away from the hopper-shaped air expanding cover, of the air outlet cover, and a noise reduction frame, an air direction guiding frame and a protection frame are sequentially arranged in the embedded groove. According to the air conditioner air outlet device, noise generated by airflow resonance is effectively reduced through the air expansion flow guide design of the hopper-shaped air expansion cover and the sound absorption cotton plate filling of the sound attenuation and noise reduction frame, airflow can be evenly and softly blown to a room through the design of the air direction guide frame, and the problems that airflow in a traditional air conditioner air outlet device is too strong and uneven in distribution are solved.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning outlet devices, and more particularly to a noise reduction device for central air conditioning outlets. Background Technology

[0002] Central air conditioning is a large-scale air conditioning system that uses one or more outdoor units to generate heat and cold, and then delivers the air to each room through a duct system to achieve overall temperature regulation. It is typically used in large buildings or places that require centralized heating and cooling, such as commercial office buildings, hotels, and hospitals. Each room usually needs to have an air outlet installed on its ceiling to allow the central air conditioning system to deliver air.

[0003] Traditional air conditioning outlet devices, when operating central air conditioning, can generate noise due to the strong airflow inside the outlet device caused by the strong airflow, which can disturb users and reduce their user experience.

[0004] Therefore, in view of the fact that the traditional air conditioning outlet device is prone to causing noise interference to users and reducing the user experience, a central air conditioning outlet noise reduction device can be designed. By installing certain air guiding structure and sound-absorbing structure inside the outlet noise reduction device, the noise generated when the central air conditioning outlet is venting can be reduced, thereby solving the above problems. Utility Model Content

[0005] In order to overcome the problem that traditional air conditioning outlet devices cause noise interference to users and reduce the user experience during the operation of central air conditioning, the airflow is relatively strong and the airflow is prone to resonance inside the outlet device.

[0006] The technical solution of this utility model is as follows: a central air conditioning outlet noise reduction device, including an air receiving duct, a bucket-shaped air diffuser, an air outlet hood, a noise reduction frame, an air direction guide frame, and a protective frame; the lower end of the air receiving duct is provided with a bucket-shaped air diffuser for diffusing the air force of the central air conditioning, the lower end of the bucket-shaped air diffuser is provided with an air outlet hood pre-embedded in the ceiling of the room, and the end of the air outlet hood away from the bucket-shaped air diffuser is provided with an embedded groove, and the inside of the embedded groove is provided in sequence with a noise reduction frame for reducing the noise of the air outlet, an air direction guide frame for changing the air outlet direction, and a protective frame for protection.

[0007] Preferably, this application combines an air inlet duct with a funnel-shaped air diffuser, an air outlet hood, a noise reduction frame, an air direction guide frame, and a protective frame. This allows workers to connect the air inlet duct to the air outlet of the central air conditioning system during operation. When the central air conditioning system is running, the airflow enters the funnel-shaped air diffuser through the air inlet duct, where it is diffused in a funnel direction. The airflow then enters the air outlet hood, passing sequentially through the noise reduction frame, the air direction guide frame, and the protective frame before being discharged into the room. When the airflow passes through the noise reduction frame, the structure within the frame absorbs and attenuates the noise generated by airflow resonance. When the airflow passes through the air direction guide frame, its internal structure changes the airflow direction.

[0008] Preferably, the inside of the bucket-shaped air diffuser is equipped with air diffuser guide plates. Multiple sets of air diffuser guide plates are provided, and the multiple sets of air diffuser guide plates are evenly arranged in a bucket shape along the inside of the bucket-shaped air diffuser. Guide grooves are opened between the multiple sets of air diffuser guide plates.

[0009] Preferably, the lower end of the bucket-shaped air diffuser is provided with a female docking frame, and the rear end of the air outlet hood is provided with a corresponding female docking frame. The female docking frame and the female docking frame are matched and engaged. Two sets of fixing holes are symmetrically opened on the surfaces of the female docking frame and the female docking frame, and the two sets of fixing holes penetrate the female docking frame and the female docking frame.

[0010] Preferably, the noise reduction frame is located inside the embedded groove, and the noise reduction frame is provided with sound-absorbing cotton panels. Multiple sets of sound-absorbing cotton panels are arranged linearly along the inside of the noise reduction frame.

[0011] Preferably, the sound-absorbing cotton board is provided with connecting shafts at both the top and bottom ends. One end of the connecting shaft is connected to the sound-absorbing cotton board, and the other end of the connecting shaft is connected to the noise reduction frame. Tapered cuts are provided at both the front and rear edges of the sound-absorbing panel.

[0012] Preferably, the wind direction guide frame is located at the end of the noise reduction frame away from the sub-connection frame, and the inside of the wind direction guide frame is provided with an upward-sloping wind guide plate.

[0013] Preferably, there are two sets of upward tilting wind guide vanes, one set of which is located at the bottom of the wind direction guide frame, and the other set of which is mounted in the middle of the wind direction guide frame.

[0014] Preferably, the protective frame is located at the end of the wind direction guide frame away from the noise reduction frame. The interior of the protective frame is provided with multiple sets of longitudinal round rods, which are arranged linearly along the interior of the protective frame. Multiple sets of transverse round rods are provided between the multiple sets of longitudinal round rods, and the multiple sets of longitudinal round rods and the multiple sets of transverse round rods are intersected with each other.

[0015] The beneficial effects of this utility model are as follows: Compared with traditional air conditioner air outlet devices, which are prone to causing noise interference to users and reducing the user experience, this application effectively reduces the noise generated by airflow resonance through the airflow guiding design of the bucket-shaped air diffuser and the sound-absorbing cotton board filling of the noise reduction frame. The design of the airflow guiding frame allows the airflow to blow evenly and gently into the room, avoiding the problem of excessively strong and uneven airflow distribution in traditional air conditioner air outlet devices. This effectively solves the problems existing in traditional air conditioner air outlet devices and improves the user experience. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall structure of the noise reduction device of this utility model.

[0017] Figure 2 The diagram shown is a schematic representation of the structure of the bucket-shaped air diffuser of the noise reduction device of this utility model.

[0018] Figure 3 The diagram shown is a schematic representation of the air outlet shroud structure of the noise reduction device of this utility model.

[0019] Figure 4 The diagram shown is a schematic representation of the noise reduction frame structure of the noise reduction device of this utility model.

[0020] Figure 5 The diagram shown is a schematic representation of the wind direction guide frame structure of the noise reduction device of this utility model.

[0021] Figure 6 The diagram shown is a schematic of the protective frame structure of the noise reduction device of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Air inlet duct; 2. Bucket-shaped air diffuser hood; 3. Air outlet hood; 301. Embedded groove; 4. Noise reduction frame; 5. Air direction guide frame; 6. Protective frame; 7. Air diffuser baffle; 8. Air guide groove; 9. Female docking frame; 10. Female docking frame; 11. Sound-absorbing cotton board; 12. Conical cut; 13. Connecting shaft; 14. Inclined upward air guide plate; 15. Longitudinal round rod; 16. Transverse round rod. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-6This utility model provides an embodiment: a central air conditioning outlet noise reduction device, including an air receiving duct 1, a bucket-shaped air diffuser 2, an outlet hood 3, a noise reduction frame 4, an air direction guide frame 5, and a protective frame 6; the lower end of the air receiving duct 1 is provided with a bucket-shaped air diffuser 2 for diffusing the air force of the central air conditioning, and the lower end of the bucket-shaped air diffuser 2 is provided with an outlet hood 3 pre-embedded in the ceiling of the room for air outlet, and the end of the outlet hood 3 away from the bucket-shaped air diffuser 2 is provided with an embedded groove 301, and the interior of the embedded groove 301 is provided with a noise reduction frame 4 for reducing outlet noise, an air direction guide frame 5 for changing the outlet air direction, and a protective frame 6 for protection.

[0025] Please see Figures 2-3 In this embodiment, an air-expanding guide plate 7 is installed inside the bucket-shaped air-expanding hood 2. Multiple sets of air-expanding guide plates 7 are arranged in a bucket shape along the interior of the bucket-shaped air-expanding hood 2. Guide grooves 8 are formed between the multiple sets of air-expanding guide plates 7. Through the combination of the air-expanding guide plates 7 and the guide grooves 8, the airflow entering the bucket-shaped air-expanding hood 2 can be evenly diffused by the multiple sets of air-expanding guide plates 7 and the guide grooves 8, reducing airflow resonance inside the device and thus reducing noise. Furthermore, this bucket-shaped structure helps to more effectively disperse the airflow. To reduce turbulence and eddies, the lower end of the bucket-shaped air diffuser hood 2 is provided with a female docking frame 9, and the rear end of the air outlet hood 3 is provided with a corresponding female docking frame 10. The female docking frame 9 and the female docking frame 10 are matched and engaged. Two sets of fixing holes are symmetrically opened on the surfaces of the female docking frame 9 and the female docking frame 10. The two sets of fixing holes pass through the female docking frame hood and the female docking frame 10. When the female docking frame 9 and the female docking frame 10 are engaged, the bucket-shaped air diffuser hood 2 and the air outlet hood 3 can be connected and engaged through the female docking frame 9 and the female docking frame 10 during installation, and then screwed into the fixing holes for fixation.

[0026] Please see Figures 3-4 In this embodiment, the noise reduction frame 4 is located inside the embedded groove 301. The noise reduction frame 4 is provided with a sound-absorbing cotton board 11. Multiple sets of sound-absorbing cotton boards 11 are provided and are linearly arranged along the inside of the noise reduction frame 4. Both the upper and lower ends of the sound-absorbing cotton board 11 are provided with connecting shafts 13. One end of the connecting shaft 13 is connected to the sound-absorbing cotton board 11, and the other end of the connecting shaft 13 is connected to the noise reduction frame 4. Conical cutouts 12 are provided at the front and rear edges of the sound-absorbing panels. By combining multiple sets of sound-absorbing panels with the conical cutouts 12, some of the noise generated by the airflow vibration when the airflow passes through the noise reduction frame 4 can be absorbed and attenuated by the multiple sets of sound-absorbing panels. At the same time, the conical cutouts 12 can ensure that the presence of the sound-absorbing cotton board 11 itself will not cause resistance to the airflow when the airflow passes through the sound-absorbing cotton board 11.

[0027] Please see Figures 5-6In this embodiment, the wind direction guide frame 5 is located at the end of the noise reduction frame 4 away from the sub-connection frame 10. The wind direction guide frame 5 has two sets of upward-angled wind guide plates 14 inside. One set of upward-angled wind guide plates 14 is located at the bottom of the wind direction guide frame 5, and the other set is mounted in the middle section of the wind direction guide frame 5. The combination of the two sets of upward-angled wind guide plates 14 allows the upward-angled wind guide plates 14 to direct hot and cold air towards the ceiling when airflow is emitted, thus facilitating the flow of hot and cold air. The airflow is evenly diffused indoors, and this slight angle does not create resistance to the airflow. The protective frame 6 is located at the end of the wind direction guide frame 5 away from the noise reduction frame 4. The interior of the protective frame 6 is linearly provided with multiple sets of longitudinal round rods 15, which are arranged linearly along the interior of the protective frame 6. Multiple sets of transverse round rods 16 are provided between the multiple sets of longitudinal round rods 15. The multiple sets of longitudinal round rods 15 and the multiple sets of transverse round rods 16 are intersected. The combination of multiple sets of longitudinal round rods 15 and multiple sets of transverse round rods 16 enhances the stability of the device and prevents external objects from damaging the internal structure of the device.

[0028] When in operation, the strong airflow generated by the central air conditioning first enters the bucket-shaped air diffuser 2 through the air inlet duct 1. Multiple sets of air diffuser baffles 7 are installed inside the bucket-shaped air diffuser 2. These baffles are evenly arranged along the bucket shape to guide the airflow to diffuse and reduce the concentrated impact force of the airflow, thereby reducing the turbulence and resonance of the airflow in the duct.

[0029] Then the diffused airflow enters the air outlet hood 3 and passes in sequence through the noise reduction frame 4, the wind direction guide frame 5 and the protective frame 6 in the embedded groove 301. The female docking frame 9 of the air outlet hood 3 matches and engages with the female docking frame 10 of the bucket-shaped air diffuser hood 2, ensuring the stability and sealing of the connection and preventing airflow leakage.

[0030] After the airflow enters the noise reduction frame 4, multiple sets of sound-absorbing cotton boards 11 absorb the noise generated in the airflow. At the same time, the conical cut 12 ensures that the presence of the sound-absorbing cotton boards 11 themselves will not cause resistance to the airflow when the airflow passes through them.

[0031] When the airflow is expelled, the upward-tilted air guide plate 14 can direct the hot and cold airflow to the ceiling, thus facilitating the even diffusion of the hot and cold airflow in the room. At the same time, this slight angle will not create resistance to the airflow.

[0032] Through the above steps, this application combines the air inlet duct 1 with the bucket-shaped air diffuser hood 2, the air outlet hood 3, the noise reduction frame 4, the air direction guide frame 5, and the protective frame 6. This allows workers to connect the air inlet duct 1 to the air outlet of the central air conditioner during operation. When the central air conditioner is working, the airflow enters the bucket-shaped air diffuser hood 2 through the air inlet duct 1. The bucket-shaped air diffuser hood 2 diffuses the airflow in a bucket direction, and then the airflow enters the air outlet hood 3. Within the air outlet hood 3, the airflow passes sequentially through the noise reduction frame 4, the air direction guide frame 5, and the protective frame 6 before being discharged into the room. When the airflow passes through the noise reduction frame 4, the structure within the frame absorbs and attenuates the noise generated by airflow resonance. When the airflow passes through the air direction guide frame 5, its internal structure changes the airflow direction. Through the air-expanding and guiding design of the bucket-shaped air diffuser hood 2 and the filling of the sound-absorbing cotton board 11 in the noise reduction frame 4, the noise generated by airflow resonance is effectively reduced.

Claims

1. A central air conditioning outlet noise reduction device, comprising an air receiving duct (1); characterized in that: It also includes a bucket-shaped air diffuser (2), an air outlet hood (3), a noise reduction frame (4), a wind direction guide frame (5), and a protective frame (6); the lower end of the air inlet duct (1) is provided with a bucket-shaped air diffuser (2) for diffusing the air force of the central air conditioning, and the lower end of the bucket-shaped air diffuser (2) is provided with an air outlet hood (3) pre-embedded in the ceiling of the room for air outlet. The end of the air outlet hood (3) away from the bucket-shaped air diffuser (2) is provided with an embedded groove (301). The interior of the embedded groove (301) is provided with a noise reduction frame (4) for reducing the noise of the air outlet, a wind direction guide frame (5) for changing the air outlet direction, and a protective frame (6) for protection.

2. The central air conditioning outlet noise reduction device according to claim 1, characterized in that: The inside of the bucket-shaped air diffuser (2) is equipped with an air diffuser guide plate (7). The air diffuser guide plate (7) is provided in multiple sets. The multiple sets of air diffuser guide plates (7) are evenly arranged in a bucket shape along the inside of the bucket-shaped air diffuser (2). A guide groove (8) is opened between the multiple sets of air diffuser guide plates (7).

3. The central air conditioning outlet noise reduction device according to claim 2, characterized in that: The lower end of the bucket-shaped air diffuser (2) is provided with a female docking frame (9), and the rear end of the air outlet hood (3) is provided with a corresponding female docking frame (10). The female docking frame (9) and the female docking frame (10) are matched and engaged. Two sets of fixing holes are symmetrically opened on the surfaces of the female docking frame (9) and the female docking frame (10). The two sets of fixing holes penetrate the female docking frame and the female docking frame (10).

4. The central air conditioning outlet noise reduction device according to claim 1, characterized in that: The noise reduction frame (4) is located inside the inner groove (301). The noise reduction frame (4) is provided with a sound-absorbing cotton board (11). There are multiple sets of sound-absorbing cotton boards (11), and the multiple sets of sound-absorbing cotton boards (11) are linearly arranged along the inside of the noise reduction frame (4).

5. A central air conditioning outlet noise reduction device according to claim 4, characterized in that: The sound-absorbing cotton board (11) has connecting shafts (13) at both the top and bottom. One end of the connecting shaft (13) is connected to the sound-absorbing cotton board (11), and the other end of the connecting shaft (13) is connected to the noise reduction frame (4). Tapered cuts (12) are provided at both the front and rear edges of the sound-absorbing panel.

6. A central air conditioning outlet noise reduction device according to claim 1, characterized in that: The wind direction guide frame (5) is located at the end of the noise reduction frame (4) away from the sub-connection frame (10), and the wind direction guide frame (5) is provided with an upward-sloping wind guide plate (14).

7. A central air conditioning outlet noise reduction device according to claim 6, characterized in that: There are two sets of upward tilting wind guide plates (14). One set of upward tilting wind guide plates (14) is located at the bottom of the wind direction guide frame (5), and the other set of upward tilting wind guide plates (14) is installed in the middle section of the wind direction guide frame (5).

8. A central air conditioning outlet noise reduction device according to claim 1, characterized in that: The protective frame (6) is located at the end of the wind direction guide frame (5) away from the noise reduction frame (4). The interior of the protective frame (6) is provided with multiple sets of longitudinal round rods (15). The multiple sets of longitudinal round rods (15) are arranged linearly along the interior of the protective frame (6). Multiple sets of transverse round rods (16) are provided between the multiple sets of longitudinal round rods (15). The multiple sets of longitudinal round rods (15) and the multiple sets of transverse round rods (16) are intersected with each other.

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