Air outlet noise reduction device of central air conditioner

Abstract

The utility model relates to the technical field of central air conditioner noise reduction, and discloses a central air conditioner air outlet noise reduction device which comprises an outer frame body, a clamping groove is formed in the bottom end of the outer frame body, a shielding assembly is arranged on the inner wall of the clamping groove, and the shielding assembly comprises a shutter located on the inner wall of the clamping groove in a clamped mode. First fixing bolts are in threaded connection with the inner walls of the four corners of the bottom end of the shutter, the upper sides of the outer walls of the first fixing bolts are in threaded connection with the inner walls of the clamping grooves, an air guiding piece is clamped to the top end of the outer frame, an air outlet is fixedly connected to the bottom end of the air guiding piece, and a mounting shell is connected to the outer wall of the air outlet through a guiding assembly. And sound insulation cotton is fixedly connected to the inner wall of the mounting shell. The sound insulation cotton is shielded by the mounting shell and directly surrounds the outer wall of the air outlet, noise generated by the air outlet can be effectively absorbed, the sound insulation cotton does not make direct contact with the outside, the service life of the sound insulation cotton can be prolonged to the maximum extent, redundant space in the air outlet cannot be occupied, and the ventilation efficiency of the air outlet is kept.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology for central air conditioning, and in particular to a noise reduction device for central air conditioning air outlets. Background Technology

[0002] A central air conditioning system consists of one or more cold and heat source systems and multiple air conditioning systems. Unlike traditional refrigerant-based air conditioners, this system uses the principle of liquid vaporization refrigeration to provide the required cooling capacity to the air conditioning system in order to offset the heat load of the indoor environment. The heating system provides the required heat to the air conditioning system in order to offset the cooling and heating load of the indoor environment.

[0003] Central air conditioning vents are terminal devices used for air supply and return in central air conditioning systems. They are a type of air distribution equipment. During operation, conventional central air conditioning vents generate noise due to vibration caused by the pressure difference between the inside and outside of the air, as well as the impact and friction between the air and the inner wall of the air duct when the air is transported in the duct. Most noise reduction is achieved by wrapping the air duct with sound-absorbing cotton material. However, the sound-absorbing cotton material wrapped around the vent is exposed and has a short service life. In order to address this technical problem, this application proposes a central air conditioning vent noise reduction device. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a central air conditioning outlet noise reduction device. The sound insulation cotton is directly wrapped around the outer wall of the air outlet by the mounting shell, which can effectively absorb the noise generated by the air outlet. Since it does not directly contact the outside, it can greatly extend its service life and does not occupy extra space inside the air outlet, thus maintaining the ventilation efficiency of the air outlet.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A central air conditioning noise reduction device includes an outer frame with a slot at the bottom. A shielding component is provided on the inner wall of the slot. An air guide is snapped onto the top of the outer frame. An air outlet is fixedly connected to the bottom of the air guide. A mounting shell is connected to the outer wall of the air outlet through a guide component. Sound insulation cotton is fixedly connected to the inner wall of the mounting shell. Two fixing bolts are threadedly connected to the inner wall of the bottom of the mounting shell.

[0007] Furthermore, the shielding assembly includes a louver that is snapped onto the inner wall of the slot. Each of the four corners of the bottom end of the louver is threaded with a fixing bolt, and the upper side of the outer wall of each fixing bolt is threaded onto the inner wall of the slot.

[0008] Furthermore, the inner wall of the top of the air guide is threaded with multiple fixing bolts, and the lower side of the outer wall of each fixing bolt is threaded to the inner wall of the top of the outer frame.

[0009] Furthermore, the guide assembly includes guide grooves located at both ends of the air outlet, and sliders are provided on the inner walls of the guide grooves.

[0010] Furthermore, the outer end of each slider is fixedly connected to the inner end of the mounting shell, and the inner wall of the mounting shell is fitted onto the outer wall of the air outlet.

[0011] Furthermore, the upper side of the outer wall of the three fixing bolts is threaded to the inner wall of the bottom end of the air outlet, and the three fixing bolts are used to install the mounting shell on the outer wall of the air outlet.

[0012] This utility model has the following beneficial effects:

[0013] 1. In this utility model, the sound insulation cotton is directly wrapped around the outer wall of the air outlet by the mounting shell, which can effectively absorb the noise generated by the air outlet. It does not directly contact the outside world, which can greatly extend its service life. It does not occupy extra space inside the air outlet and maintains the ventilation efficiency of the air outlet.

[0014] 2. In this utility model, the louvers set at the bottom of the outer frame can effectively adjust the air volume, making the air blow out more evenly, improving the indoor air circulation effect, while preventing dust, debris and small animals from entering the air conditioning system, protecting the internal components of the equipment, and extending the service life. They are installed in the slot opened at the bottom of the outer frame by fixing bolts, which makes the installation stable and easy to disassemble and maintain. Attached Figure Description

[0015] Figure 1 This is an exploded view of a central air conditioning outlet noise reduction device proposed in this utility model;

[0016] Figure 2 This is a perspective view of a central air conditioning outlet noise reduction device proposed in this utility model;

[0017] Figure 3 This is a cross-sectional view of the outer frame of a central air conditioning outlet noise reduction device proposed in this utility model;

[0018] Figure 4 This is a cross-sectional view of the mounting shell in a central air conditioning noise reduction device proposed in this utility model.

[0019] Legend:

[0020] 1. Outer frame; 2. Louver; 3. Fixing bolt one; 4. Mounting shell; 5. Slot; 6. Air guide; 7. Fixing bolt two; 8. Guide groove; 9. Air outlet; 10. Sound insulation cotton; 11. Fixing bolt three; 12. Sliding block. Detailed Implementation

[0021] 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.

[0022] Reference Figure 1-4 An embodiment of this utility model is provided: a central air conditioning outlet noise reduction device, including an outer frame 1, a slot 5 is provided at the bottom of the outer frame 1, a shielding component is provided on the inner wall of the slot 5, the shielding component includes a louver 2 that is snapped into the inner wall of the slot 5, and a fixing bolt 3 is threadedly connected to the inner wall of the four corners at the bottom of the louver 2, and the upper side of the outer wall of the fixing bolt 3 is threadedly connected to the inner wall of the slot 5.

[0023] Specifically, the louvers 2 set at the bottom of the outer frame 1 can effectively adjust the air volume, making the air blow out more evenly and dispersed throughout the indoor space, improving the indoor air circulation effect. At the same time, they can prevent dust, debris and small animals from entering the air conditioning system, protect the internal components of the equipment, and extend its service life. They are installed in the slots 5 opened at the bottom of the outer frame 1 by fixing bolts 3, which are stable and easy to disassemble and maintain.

[0024] The top of the outer frame 1 is fitted with an air guide 6. The inner wall of the top of the air guide 6 is threaded with multiple fixing bolts 7. The lower side of the outer wall of the fixing bolts 7 is threaded to the inner wall of the top of the outer frame 1. The bottom of the air guide 6 is fixedly connected to an air outlet 9. The outer wall of the air outlet 9 is connected to a mounting shell 4 through a guide assembly. The guide assembly includes guide grooves 8 located at both ends of the air outlet 9. The inner wall of the guide grooves 8 is provided with sliders 12. The outer end of the sliders 12 is fixedly connected to the inner end of the mounting shell 4. The inner wall of the mounting shell 4 is fitted onto the outer wall of the air outlet 9. The inner wall of the mounting shell 4 is fixedly connected with sound insulation cotton 10. The inner wall of the bottom end of the mounting shell 4 is threaded with two fixing bolts 11. The upper side of the outer wall of the fixing bolts 11 is threaded to the inner wall of the bottom end of the air outlet 9. The fixing bolts 11 are used to install the mounting shell 4 onto the outer wall of the air outlet 9.

[0025] Specifically, the airflow can be guided by the air guide 6, making the airflow more concentrated when it moves in the air outlet 9, reducing airflow turbulence and noise generation. The mounting shell 4 installed on the outer wall of the air outlet 9 has sound insulation cotton 10 inside that can effectively absorb noise, further improving the noise reduction effect. At the same time, the sound insulation cotton 10 is not directly wrapped inside the air outlet 9, so that the sound insulation cotton 10 is not directly exposed to the outside, which can extend its service life and ensure long-term stable noise reduction performance. It will not occupy extra space inside the air outlet 9, maintaining the ventilation efficiency of the air outlet. During installation, the mounting shell 4 can be guided by the slider 12 sliding inside the guide groove 8, which makes it easy to align the threaded hole reserved at the bottom of the air outlet 9 with the through hole at the bottom of the mounting shell 4 for installation. This facilitates the insertion of the fixing bolts 11 for installation and fixation, improving the overall installation efficiency. During maintenance, the mounting shell 4 can also be directly removed from the air outlet 9 to maintain the sound insulation cotton 10 inside, which is convenient to use.

[0026] Working Principle: During use, the air guide 6 is installed on the top of the outer frame 1 using tools and fixing bolts 2 and 7. Then, the outer frame 1 is connected to the central air conditioning unit. At this point, the mounting shell 4 can be inserted from the bottom of the outer frame 1, allowing the slider 12 on the mounting shell 4 to engage with the guide groove 8 on the outer wall of the air outlet 9. Pushing the mounting shell 4 upwards causes the slider 12 to slide within the guide groove 8 until it reaches the top of the inner wall of the guide groove 8. At this point, the mounting shell 4 will completely cover the air outlet 9. Next, rotate the mounting shell 4 to move the slider 12 laterally along the upper inner wall of the guide groove 8, thus initially fixing the mounting shell 4 to the air outlet 9. Align the pre-drilled through hole at the bottom of the mounting shell 4 with the threaded hole at the bottom of the air outlet 9. Then, insert the fixing bolts 3 and 11 and tighten them with tools to complete the installation of the mounting shell 4 and the air outlet 9, ensuring proper connection between the mounting shell 4 and the air outlet 9. The louvers 2 are then snapped into the slot 5 at the bottom of the outer frame 1 and installed using the fixing bolts 1-3. When the central air conditioner blows out air, it is first gathered by the air guide 6 and introduced into the air outlet 9 for centralized discharge, increasing the airflow. Then, the noise generated by the airflow moving inside the air outlet 9 is absorbed by the sound insulation cotton 10 installed inside the mounting shell 4, reducing noise. The sound insulation cotton 10 is directly wrapped around the outer wall of the air outlet 9 by the mounting shell 4, which can effectively absorb the noise generated by the air outlet 9 and does not directly contact the outside, thus greatly extending its service life. At the same time, when maintaining it, the louvers 2 can be removed from the bottom of the outer frame 1, and the fixing bolts 1-3 can be removed. The mounting shell 4 can then be rotated to remove it from the air outlet 9 to maintain or replace the internal sound insulation cotton 10. This is very convenient and does not require disassembling or replacing the entire air outlet 9.

[0027] 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 central air conditioning outlet noise reduction device, comprising an outer frame (1), characterized in that: The bottom of the outer frame (1) is provided with a slot (5), and the inner wall of the slot (5) is provided with a shielding component. The top of the outer frame (1) is connected with a wind guide (6), and the bottom of the wind guide (6) is fixedly connected with an air outlet (9). The outer wall of the air outlet (9) is connected with a mounting shell (4) through a guide component. The inner wall of the mounting shell (4) is fixedly connected with sound insulation cotton (10), and the inner wall of the bottom of the mounting shell (4) is threaded with two fixing bolts (11).

2. The central air conditioning outlet noise reduction device according to claim 1, characterized in that: The shielding assembly includes a louver (2) that is snapped into the inner wall of the slot (5). The inner walls of the four corners at the bottom of the louver (2) are threaded with fixing bolts (3). The upper side of the outer wall of the fixing bolts (3) is threaded into the inner wall of the slot (5).

3. The central air conditioning outlet noise reduction device according to claim 1, characterized in that: The top inner wall of the air guide (6) is threaded with multiple fixing bolts (7), and the lower side of the outer wall of the fixing bolts (7) is threaded to the top inner wall of the outer frame (1).

4. The central air conditioning outlet noise reduction device according to claim 1, characterized in that: The guide assembly includes guide grooves (8) located at both ends of the air outlet (9), and sliders (12) are provided on the inner walls of the guide grooves (8).

5. A central air conditioning outlet noise reduction device according to claim 4, characterized in that: The outer end of each slider (12) is fixedly connected to the inner end of the mounting shell (4), and the inner wall of the mounting shell (4) is fitted onto the outer wall of the air outlet (9).

6. A central air conditioning outlet noise reduction device according to claim 1, characterized in that: The upper side of the outer wall of the fixing bolt three (11) is threaded to the inner wall of the bottom end of the air outlet (9). The fixing bolt three (11) is used to install the mounting shell (4) on the outer wall of the air outlet (9).

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