Tail end air volume adjusting device and air supply structure

Abstract

The utility model belongs to the technical field of fresh air, and particularly relates to a tail end air volume adjusting device and an air supply structure, the tail end air volume adjusting device is used for being placed in an air supply pipe for use and comprises a sound absorption material and a shell, openings I are formed in the two ends of the shell, the shell is arranged outside the sound absorption material in a sleeving mode through the openings I, and the side face of the shell is arranged in a hollowed-out mode. An opening II for exposing the sound absorbing material is formed; when the tail end air volume adjusting device is placed in the air supply pipe, a gap for fresh air to flow is formed between the surface of the tail end air volume adjusting device and the inner wall of the air supply pipe. The tail end air volume adjusting device can adjust air volume and reduce noise, is simple in overall structure, easy to machine and convenient to assemble, can be selectively additionally arranged in the air supply pipe at all stages, and is small in technical difficulty and high in flexibility.

Description

Technical Field

[0001] This utility model belongs to the field of fresh air technology, specifically relating to a terminal air volume adjustment device and an air supply structure. Background Technology

[0002] As people's living standards continue to improve, their requirements for indoor environments are also increasing, and more and more homes are installing fresh air systems during renovations. Fresh air systems have gradually become a necessity. For displacement ventilation methods with floor supply and ceiling exhaust, flat ducts are generally used as supply ducts to deliver fresh air from the ground. Since flat ducts require a certain amount of height space when installed on the ground, a large amount of height space can affect the ceiling height, so the height of flat ducts is usually ≤30mm. The limited height of flat ducts results in a relatively high cross-sectional air velocity, which can easily cause noise. While using multi-branch flat ducts can reduce some noise, the different air supply paths can lead to uneven airflow from each duct. Currently, most existing technologies address these issues by installing silencers or airflow regulating valves at the air outlet. However, these methods have low installation flexibility, silencers occupy a large space, and the valve plates of airflow regulating valves themselves can easily generate additional secondary noise, affecting the residents' experience. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an adjustable air volume and noise reduction device with a simple overall structure, easy processing and convenient assembly. The terminal air volume adjustment device can be selectively added to the air supply duct at each stage, and the addition is technically less difficult and highly flexible.

[0004] This utility model provides a terminal airflow regulating device for use inside an air supply duct. It includes sound-absorbing material and a shell. The shell has openings at both ends and is fitted over the sound-absorbing material through these openings. The side of the shell is hollowed out to form an opening 2 for exposing the sound-absorbing material. When placed inside the air supply duct, there is a gap between the surface of the terminal airflow regulating device and the inner wall of the air supply duct to allow fresh air to flow.

[0005] Furthermore, the sound-absorbing material can be cut, and the outer shell has one or more shells, which are fitted over the same sound-absorbing material.

[0006] Furthermore, the sound-absorbing material is a flexible material, and when there are at least two shells, the adjacent shells can form an angle under the action of external force.

[0007] Furthermore, adjacent shells are connected by flexible connecting pieces.

[0008] Furthermore, there is no connection between any two adjacent shells.

[0009] Furthermore, when the outer shell is fitted over the sound-absorbing material, the side of the sound-absorbing material abuts against an edge of the opening and / or against the inner wall of the outer shell, so that the outer shell and the sound-absorbing material are relatively fixed.

[0010] This utility model also provides an air supply structure, including an air outlet box, an air supply pipe and the aforementioned terminal air volume adjustment device. The air outlet box is provided with an air outlet and an air inlet. The air outlet end of the air supply pipe is connected to the air inlet. The terminal air volume adjustment device is placed inside the air supply pipe.

[0011] Furthermore, it also includes an air distribution box for connection to the main fresh air duct, wherein there are two or more air outlet boxes and air supply pipes, the air inlet ends of the two or more air supply pipes are connected to the air distribution box, and at least one air supply pipe contains a terminal air volume regulating device.

[0012] Furthermore, the edge of the air inlet is provided with a plug-in part, which is inserted into the air outlet end of the air supply pipe so that the air outlet end of the air supply pipe is connected to the air inlet, and the terminal air volume regulating device is limited in the air supply pipe by the end of the plug-in part.

[0013] Furthermore, when the air supply duct has a vertical plate inside, the insertion part is provided with a notch to avoid the vertical plate.

[0014] The beneficial effects of this utility model are as follows: After the terminal air volume regulating device is placed inside the air supply duct, it can generate a certain resistance to the fresh air, thereby changing the air volume output of the air supply duct per unit time, and effectively reducing noise through the sound-absorbing material. Based on the outer shell design, on the one hand, it increases the overall weight and friction with the bottom of the inner wall of the air supply duct, preventing the terminal air volume regulating device from being blown out of the duct by the fresh air, thus allowing the terminal air volume regulating device to be placed directly inside the air supply duct more reliably. On the other hand, without affecting the noise reduction function of the sound-absorbing material, it provides lateral constraint to the sound-absorbing material, suppressing its deformation under the continuous action of fresh air, thereby preventing significant changes in the air volume output of the air supply duct over time, ensuring reliability and effectiveness in use.

[0015] The overall structure is simple, low-cost, easy to process, and convenient to assemble. It does not occupy additional external space and does not generate secondary noise like that of a flow control valve, thus improving the residents' experience. This terminal flow control device can be selectively added to the air supply duct during the construction of the air supply structure, the commissioning stage after the air supply structure is completed, and after the residents move in. The addition is technically relatively simple and highly flexible.

[0016] By placing terminal air volume regulating devices in some air supply ducts, not placing terminal air volume regulating devices in some air supply ducts, or placing terminal air volume regulating devices of different sizes in each air supply duct, the resistance to fresh air in the corresponding air supply ducts is changed, thereby balancing the air volume of each air supply duct while reducing the overall air supply noise. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the terminal airflow regulating device of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the outer shell of this utility model.

[0019] Figure 3 This is a schematic diagram of the air supply structure of this utility model.

[0020] Figure 4 This is a schematic diagram showing the combination of the air outlet box and the air supply pipe of this utility model.

[0021] Figure 5 This is a schematic diagram of the air outlet box of this utility model.

[0022] Figure 6 This is a schematic diagram of the air supply duct of this utility model.

[0023] Figure 7 This is a schematic diagram of the terminal air volume regulating device of this utility model placed inside the air supply duct.

[0024] In the diagram: 1. Terminal air volume adjustment device; 11. Sound-absorbing material; 12. Outer shell; 121. Opening one; 122. Opening two; 2. Air outlet box; 21. Air outlet; 22. Air inlet; 23. Connecting part; 231. Notch; 3. Air supply duct; 31. Vertical plate; 4. Air distribution box; 5. Fresh air main duct. Detailed Implementation

[0025] like Figure 1 and Figure 2 As shown, this utility model provides a terminal airflow regulating device 1 for use inside an air supply duct 3. The terminal airflow regulating device 1 includes a sound-absorbing material 11 and a housing 12. The housing 12 has openings 121 at both ends, and the housing 12 is fitted and fixed to the outside of the sound-absorbing material 11 through the openings 121. The side of the housing 12 is hollowed out, forming openings 122 for exposing the sound-absorbing material 11. The surface of the terminal airflow regulating device 1 is the surface of the housing 12 and / or the surface of the sound-absorbing material 11, such as... Figure 7 As shown, when the terminal air volume regulating device 1 is placed inside the air supply duct 3, there is a gap between the surface of the terminal air volume regulating device 1 and the inner wall of the air supply duct 3 to allow fresh air to flow.

[0026] The sound-absorbing material 11 is specifically a porous or fibrous material with interconnected micropores and gaps, providing a certain degree of air permeability. It is also a flexible material that can be bent under certain external forces, such as sponge, PP cotton, or fiberglass wool. The outer shell 12 is made of a material with sufficient strength and resistance to deformation, such as plastic or metal. The perforations on its sides can be multiple small holes or... Figure 1 and Figure 2 The window-shaped structure shown. The air supply duct 3 can be a flat duct or other air supply duct 3 that meets the requirements of noise reduction and balanced air volume.

[0027] After the terminal airflow regulating device 1 is placed inside the air supply duct 3, it can generate a certain resistance to the fresh air, thereby changing the airflow volume of the air supply duct 3 per unit time, thus playing a role in airflow regulation. The sound-absorbing material 11 effectively reduces noise in the air supply duct 3. The overall structure is simple, low-cost, easy to process, and convenient to assemble. Since the sound-absorbing material 11 is generally a flexible material and easily deformed, the outer shell 12 increases the overall weight and friction with the bottom of the inner wall of the air supply duct 3, preventing the terminal airflow regulating device 1 from being blown out of the air supply duct 3 by the fresh air. This allows the terminal airflow regulating device 1 to be placed directly inside the air supply duct 3 more reliably. Furthermore, without affecting the noise reduction function of the sound-absorbing material 11, it provides lateral constraint, suppressing the deformation of the sound-absorbing material 11 under the continuous action of fresh air, thereby preventing significant changes in the airflow volume inside the air supply duct 3 over time and ensuring the reliability and effectiveness of its use.

[0028] Compared to using a silencer box, this invention does not require additional external space. Compared to using an airflow regulating valve, this invention does not generate secondary noise from the valve plate, thus improving the residents' experience. While pre-fixing the sound-absorbing material 11 to the inner wall of the air supply duct 3 before installation avoids the problems associated with silencers and valves, it also prevents users from adjusting the airflow independently later. Therefore, compared to using silencers, airflow regulating valves, and pre-fixing the sound-absorbing material 11 to the inner wall of the air supply duct 3, this invention, because it is directly placed inside the air supply duct 3, allows for selective installation of the terminal airflow regulating device 1 during construction, commissioning, and after occupancy. The installation is technically simpler and offers greater flexibility in adjustment.

[0029] When applied to a single air supply duct 3, by using a terminal airflow regulating device 1 of appropriate size, the air supply noise can be effectively reduced while meeting indoor airflow requirements. When applied to an air supply structure with multiple air supply ducts 3, by placing terminal airflow regulating devices 1 in some air supply ducts 3, not placing them in others, or placing terminal airflow regulating devices 1 of different sizes in each air supply duct 3, the resistance to fresh air within the corresponding air supply duct 3 can be changed, thereby balancing the airflow of each air supply duct 3 while reducing overall air supply noise. The aforementioned air supply structure can be used for floor air supply or other locations, as long as the air supply duct 3 is horizontally installed.

[0030] In one embodiment of this utility model, the terminal airflow regulating device 1 has one outer shell 12. The terminal airflow regulating device 1 comes in different sizes and widths, with each size having a different width of its outer shell 12. The size of the sound-absorbing material 11 matches the size of the outer shell 12. In use, different sizes of terminal airflow regulating devices 1 are selected to suit the current airflow regulation requirements.

[0031] In a preferred embodiment of this utility model, the sound-absorbing material 11 can be cut, and there is one or more outer shells 12, all of which are the same size. One or more outer shells 12 are fitted over the same sound-absorbing material 11. The direction of the line connecting the two ends of the outer shell 12 is used as the length direction of the terminal airflow regulating device 1, the outer shell 12, and the sound-absorbing material 11 for explanation. (Refer to...) Figure 3 and Figure 7 As shown, when the terminal airflow regulating device 1 is placed inside the air supply duct 3, its length direction is the same as the air supply direction of the air supply duct 3. In specific use, sound-absorbing material 11 of appropriate length is selectively cut according to the corresponding noise reduction and airflow requirements, and a corresponding number of outer shells 12 are fitted to form a terminal airflow regulating device 1 of the corresponding size. That is, by cutting sound-absorbing material 11 of different lengths and setting a corresponding number of outer shells 12, terminal airflow regulating devices 1 of different sizes are formed. In this embodiment, the terminal airflow regulating devices 1 of different sizes are simple and convenient to set up, with higher flexibility and versatility, and no need to process outer shells 12 of different sizes, reducing processing costs.

[0032] In the air supply structure, the end of the air supply duct 3 is generally connected to the air outlet box 2, which serves as the indoor air outlet. Taking floor air supply as an example, the air outlet 21 of the air outlet box 2 is generally arranged upwards and is not on the same plane as the air outlet end of the air supply duct 3. Preferably, when there are at least two outer shells 12, the two adjacent outer shells 12 can form an angle under the action of external force. Figure 4The lateral direction from the perspective of the air outlet 21 is explained as the width direction. When the air outlet 21 and the air outlet end of the air supply duct 3 are not on the same plane, and the length of the terminal air volume regulating device 1 is greater than the width of the air outlet 21, the terminal air volume regulating device 1 can be bent to place it inside the air supply duct 3. Preferably, the length of the single outer shell 12 is less than the width of the air outlet 21 to ensure that the terminal air volume regulating device 1 can be inserted into the air supply duct 3 along the air outlet box 2.

[0033] In one embodiment of this invention, adjacent outer shells 12 are connected by a bendable connecting piece. Specifically, the connecting piece can be a thin sheet made of the same material as the outer shell 12, but with a much smaller thickness. It can be integrally formed between adjacent outer shells 12 during the manufacturing process. When a corresponding number of outer shells 12 need to be fitted onto a sound-absorbing material 11 of a given length, the corresponding number of outer shells 12 can be cut and fitted.

[0034] In another embodiment of this invention, adjacent outer shells 12 are not connected, that is, each outer shell 12 is independent.

[0035] To prevent the sound-absorbing material 11 from detaching from the outer casing 12 during use of the terminal airflow regulating device 1, when the outer casing 12 is fitted over the sound-absorbing material 11, the outer casing 12 and the sound-absorbing material 11 can be glued together to fix the outer casing 12 and the sound-absorbing material 11 relatively, or the width of the sound-absorbing material 11 can be slightly larger than the width of the opening 121 and / or the interior of the outer casing 12. (Refer to...) Figure 7 As shown, in Figure 7 In the lateral direction, the sound-absorbing material 11 is slightly wider than the outer shell 12, so that when the outer shell 12 is fitted over the sound-absorbing material 11, the side of the sound-absorbing material 11 abuts against the edge of the opening 121 and / or the inner wall of the outer shell 12, so that the outer shell 12 and the sound-absorbing material 11 are relatively fixed.

[0036] like Figures 3-7 As shown, this utility model also provides an air supply structure, which includes an air outlet box 2, an air supply pipe 3, and the aforementioned terminal airflow regulating device 1. The air outlet box 2 is the indoor air supply structure, and it is provided with an air outlet 21 and an air inlet 22. The air outlet end of the air supply pipe 3 is connected to the air inlet 22, and the terminal airflow regulating device 1 is placed inside the air supply pipe 3. When there are two or more air supply pipes 3, the air supply structure also includes an air distribution box 4 connected to the fresh air main pipe 5. The number of air outlet boxes 2 is the same as the number of air supply pipes 3, such as... Figure 3 As shown, each air outlet box 2 is connected to an air supply pipe 3 one-to-one, and the air inlet end of two or more of the air supply pipes 3 is connected to an air distribution box 4. At least one air supply pipe 3 contains a terminal air volume regulating device 1. When this air supply structure is used for ground air supply, the air supply pipe 3 is a flat air pipe, while when used for air supply in other locations, the air supply pipe 3 can be an air pipe of other shapes.

[0037] Because this air supply structure incorporates the aforementioned terminal airflow regulating device 1, when there is only a single air supply duct 3, the use of a terminal airflow regulating device 1 of appropriate size can effectively reduce air supply noise while meeting indoor airflow requirements. When there are multiple air supply ducts 3, by placing the terminal airflow regulating device 1 in some air supply ducts 3, not placing it in others, or placing terminal airflow regulating devices 1 of different sizes in each air supply duct 3, the resistance to fresh air within each duct 3 is changed, thereby balancing the airflow of each air supply duct 3 while reducing overall air supply noise. Furthermore, it does not increase the space occupied by the air supply structure, nor does it generate secondary noise like that caused by the valve plate of an airflow regulating valve.

[0038] like Figure 4 and Figure 5 As shown, the edge of the air inlet 22 is provided with a plug-in part 23, which is inserted into the air outlet end of the air supply duct 3, so that the air outlet end of the air supply duct 3 is connected to the air inlet 22. This arrangement facilitates the connection between the air supply duct 3 and the air outlet box 2, and can also be used to limit the terminal air volume adjustment device 1. That is, the terminal air volume adjustment device 1 is limited in the air supply duct 3 by the end of the plug-in part 23, further preventing the terminal air volume adjustment device 1 from being blown out of the air supply duct 3 by fresh air, and increasing the reliability of the terminal air volume adjustment device 1 when placed in the air supply duct 3. Specifically, with Figure 4 Taking the perspective as an example, the portion of the plug-in part 23 located at the bottom of the inner wall of the air supply duct 3 can form a step at the bottom of the inner wall of the air supply duct 3. When the terminal air volume regulating device 1 is placed inside the air supply duct 3 and the outer casing 12 is located... Figure 4 When viewed from the right side of the connector 23, the portion of the connector 23 located at the bottom of the inner wall of the air supply duct 3 can limit and block the outer casing 12 in the air supply direction of the air supply duct 3, thereby limiting the terminal air volume regulating device 1.

[0039] In this invention, the shape of the plug-in portion 23 preferably corresponds to the edge shape of the air inlet 22, that is, the plug-in portion 23 is arranged around the edge of the air inlet 22. When the air supply pipe 3 has a vertical plate 31, the plug-in portion 23 is provided with a notch 231 to avoid the vertical plate 31. When the air supply pipe 3 does not have a vertical plate 31, the notch 231 is not required on the plug-in portion 23. In actual use, the air outlet box 2 is also provided with a detachable air outlet panel at the air outlet 21.

[0040] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; under the concept of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the purpose of clarification.

[0041] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. A terminal airflow regulating device, characterized in that, For use in air supply pipe (3), including sound-absorbing material (11) and shell (12), the shell (12) has openings (121) at both ends, and is fitted over the sound-absorbing material (11) through openings (121), and the side of the shell (12) is hollowed out to form openings (122) for exposing the sound-absorbing material (11); when used in air supply pipe (3), there is a gap between the surface of the terminal air volume regulating device (1) and the inner wall of the air supply pipe (3) for fresh air to flow.

2. The terminal airflow regulating device as described in claim 1, characterized in that, The sound-absorbing material (11) can be cut, and the outer shell (12) has one or more, with one or more outer shells (12) fitted over the same sound-absorbing material (11).

3. The terminal airflow regulating device as described in claim 2, characterized in that, The sound-absorbing material (11) is a flexible material. When there are at least two shells (12), the shells (12) adjacent to each other can form an angle under the action of external force.

4. The terminal airflow regulating device as described in claim 3, characterized in that, The adjacent outer shells (12) are connected by a bendable connecting piece.

5. The terminal airflow regulating device as described in claim 3, characterized in that, The shells (12) that are adjacent to each other are not connected.

6. The terminal airflow regulating device as described in any one of claims 1-5, characterized in that, When the outer shell (12) is fitted over the sound-absorbing material (11), the side of the sound-absorbing material (11) abuts against the edge of the opening (121) and / or against the inner wall of the outer shell (12) so that the outer shell (12) and the sound-absorbing material (11) are relatively fixed.

7. An air supply structure, characterized in that, It includes an air outlet box (2), an air supply pipe (3), and a terminal air volume regulating device (1) as described in any one of claims 1-6. The air outlet box (2) is provided with an air outlet (21) and an air inlet (22). The air outlet end of the air supply pipe (3) is connected to the air inlet (22). The terminal air volume regulating device (1) is placed inside the air supply pipe (3).

8. The air supply structure as described in claim 7, characterized in that, It also includes a distribution box (4) for connecting to the fresh air main duct (5), the air outlet box (2) and the air supply pipe (3) each have more than two, the air inlet end of the more than two air supply pipes (3) is connected to the distribution box (4), and at least one air supply pipe (3) has a terminal air volume regulating device (1) placed inside.

9. The air supply structure as described in claim 7 or 8, characterized in that, The edge of the air inlet (22) is provided with a plug (23), which is inserted into the air outlet of the air supply pipe (3) so that the air outlet of the air supply pipe (3) is connected to the air inlet (22). The terminal air volume regulating device (1) is limited in the air supply pipe (3) by the end of the plug (23).

10. The air supply structure as described in claim 9, characterized in that, When the air supply pipe (3) has a vertical plate (31) inside, the plug part (23) is provided with a notch (231) to avoid the vertical plate (31).

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