Air distribution box

Abstract

The utility model provides an air distribution box which comprises a shell and an upper cover. The upper end of the shell is open, an air inlet is formed in one side of the shell, and an air outlet is formed in the side, away from the air inlet, the upper cover is arranged at the upper end of the shell and connected with the shell in a sealed mode to form an air distribution cavity. And the inner wall of the shell is a wavy surface. During installation, the air inlet pipe is in sealed connection with the air inlet, and the air outlet is in sealed connection with the branch air pipe. The air inlet pipe inputs air flow into the air distribution cavity from the air inlet and outputs the air flow to all the branch air pipes through the air outlet. The inner wall of the shell is in a wave-shaped design, the structure is similar to an arch bridge, stress can be dispersed, the bearing capacity and the pressure resistance of the shell are improved, and the wave-shaped inner wall can change fluid flowing characteristics, reduce vortexes and turbulence, reduce the resistance coefficient and improve the flowing efficiency. Meanwhile, the wave-shaped inner wall can absorb and disperse noise generated by airflow.

Description

Technical Field

[0001] The utility model relates to the field of air conditioning, in particular to a branch air box. Background Art

[0002] As people's requirements for living environment become higher and higher, more and more people begin to choose central air conditioning systems. An efficient ventilation system directly determines whether the air volume generated by the central fan can be evenly distributed to each area. The air distribution box is an important part of the ventilation system. It can avoid the problem of uneven air volume in a single pipeline and ensure that each area gets the appropriate air volume.

[0003] Since the airflow enters the air distribution box at a high speed, collision occurs inside the air distribution box, which easily generates eddy currents and emits noise. Especially for air distribution boxes made of metal, poor welding and assembly quality, gaps at the interfaces, uneven interfaces with burrs and other problems are prone to generate noise. Existing air distribution boxes usually adopt the method of adding sound-absorbing materials inside or wrapping sound-absorbing materials outside to reduce noise. Whether adding sound-absorbing materials inside or outside, it will indirectly increase the volume of the air distribution box, occupy the limited space of the building or house, affect the interior design layout and aesthetics, and increase the manufacturing cost. Even some of the sound-absorbing materials installed inside occupy the internal space of the air distribution box, affecting the operation of the ventilation system and increasing the energy consumption of the air-conditioning system.

[0004] Therefore, the above problems need to be solved urgently. Utility Model Content

[0005] Purpose of the utility model: In order to overcome the above shortcomings, the utility model provides an air distribution box, specifically a air distribution box with thermal insulation and noise reduction functions.

[0006] Technical solution: In order to achieve the above-mentioned purpose, the utility model provides an air distribution box, including a shell and an upper cover. The shell is open at the upper end, an air inlet is provided on one side of the shell, and an air outlet is provided on the side of the shell away from the air inlet. The upper cover is provided at the upper end of the shell, and the upper cover and the shell are sealed and connected to form an air distribution chamber. The inner wall of the shell is set as a wave surface. During installation, the air inlet pipe and the air inlet are sealed and connected, and the air outlet and the branch air duct are sealed and connected. The air inlet duct inputs the air flow from the air inlet into the air distribution chamber, and outputs it to each branch air duct through the air outlet. The inner wall of the shell is designed with a wave shape. This structure is similar to an arch bridge and can disperse stress, improve the bearing capacity and pressure resistance of the shell, and the wave-shaped inner wall can change the flow characteristics of the fluid, reduce vortices and turbulence, absorb and disperse the noise generated by the air flow, reduce the resistance coefficient, and improve the flow efficiency.

[0007] Furthermore, in the above-mentioned air distribution box, the bottom surface of the upper cover is a wave surface, which improves the bearing capacity and pressure resistance of the upper cover, reduces vortices and turbulence, improves flow efficiency, and absorbs and disperses the noise generated by the airflow.

[0008] Furthermore, in the above-mentioned air distribution box, the upper cover is provided with a support column, and the bottom surface of the inner cavity of the shell is provided with a groove corresponding to the support column, and the support column extends into the groove for engagement. The support column can enhance the structural strength of the air distribution box, and extending the support column into the groove is conducive to fixing the upper cover. The airflow enters the air distribution box from the air inlet, and the support column guides the airflow to flow along both sides of the support column, so that the airflow is evenly dispersed to each air outlet of the air distribution box, optimizing the airflow distribution, and ensuring that each part obtains a balanced airflow supply.

[0009] Furthermore, in the above-mentioned air distribution box, the cross section of the support column is in a cone shape from the air inlet to the air outlet, the side surface of the support column is a wave surface, and the side wall of the groove provided on the bottom surface of the inner cavity of the shell is a wave surface corresponding to the side surface of the support column. The cone-shaped support column can reduce wind resistance due to its lower windward surface, can reduce airflow energy loss, and guide the airflow to flow to each air outlet.

[0010] Furthermore, in the above-mentioned air distribution box, in order to fix the shell and the upper cover to form a better sealing structure, a sealing boss is provided along the opening circumference of the upper end of the shell, and the upper cover is provided with a sealing groove corresponding to the sealing boss, and the sealing boss is embedded in the sealing groove to form a seal.

[0011] Furthermore, in the above-mentioned air distribution box, in order to meet the application requirements of multiple scenarios, multiple air outlets are provided, and the air outlets are distributed in a polygonal shape.

[0012] Furthermore, in the above-mentioned air distribution box, the shell and the upper cover are made of foamed polypropylene. The air distribution box is made of foamed polypropylene. Since foamed polypropylene is light in weight, the weight of the air distribution box can be significantly reduced, which is convenient for handling and installation. Foamed polypropylene can prevent the rapid exchange of cold and hot air, help improve energy efficiency, and reduce the loss of cold and warm air. Foamed polypropylene has strong corrosion resistance and durability. There is no emission of harmful substances during the production process, and it can be recycled and reused after being discarded. Foamed polypropylene is easy to process. Foamed polypropylene is used as a commonly used noise reduction material to further improve the noise reduction performance.

[0013] Furthermore, in the above-mentioned air distribution box, in order to improve the connection strength between the air outlet and the branch air duct, the air outlet is provided with a pre-embedded sheet metal part.

[0014] Furthermore, in the above-mentioned air distribution box, the shell is provided with a plurality of locking holes, and the upper cover is provided with through holes corresponding to the locking holes. The screw rod passes through the locking holes to hoist the air distribution box as a whole.

[0015] It can be seen from the above technical scheme that the utility model has the following beneficial effects: in the utility model, the inner wall of the air distribution box is designed to be wavy. This structure is similar to an arch bridge and can disperse stress, improve the bearing capacity and pressure resistance of the shell. The wavy inner wall can change the flow characteristics of the fluid, reduce vortices and turbulence, reduce the resistance coefficient, and improve flow efficiency. The wavy inner wall can absorb and disperse the noise generated by the airflow. The air distribution box is made of foamed polypropylene. Due to the light weight of foamed polypropylene, the weight of the air distribution box can be significantly reduced, which is convenient for handling and installation. Foamed polypropylene can prevent the rapid exchange of cold and hot air, help improve energy efficiency, and reduce the loss of cold and warm air. Foamed polypropylene is used as a commonly used noise reduction material to further improve the noise reduction performance of the air distribution box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a wind box of the utility model;

[0017] Figure 2 It is an exploded view of the utility model;

[0018] Figure 3 It is an exploded view of the utility model;

[0019] In the figure: 1, housing, 11, air inlet, 12, air outlet, 14, sealing boss, 15, locking hole, 2, upper cover, 21, supporting column, 22, sealing groove, 23, through hole. DETAILED DESCRIPTION

[0020] Example 1

[0021] like Figure 1-2The air distribution box shown includes a shell 1 and an upper cover 2. The shell 1 and the upper cover 2 are made of foamed polypropylene. The shell 1 is open at the upper end, and an air inlet 11 is provided on one side of the shell 1, and an air outlet 12 is provided on the side of the shell 1 away from the air inlet 11. In order to meet the application requirements of multiple scenarios, multiple air outlets 12 are provided, and the air outlets 12 are distributed in a polygonal shape. In order to improve the connection strength between the air outlet 12 and the branch air duct, the air outlet 12 is provided with a pre-embedded sheet metal. The upper cover 2 is arranged at the upper end of the shell 1, and the upper cover 2 and the shell 1 are sealed and connected to form an air distribution cavity. The upper cover 2 is provided with a support column 21, and the bottom surface of the inner cavity of the shell 1 is provided with a groove corresponding to the support column 21, and the support column 21 is inserted into the groove for engagement. Inserting the support column 21 into the groove is conducive to fixing the upper cover 2. The cross section of the support column 21 is spindle-shaped from the air inlet 11 to the air outlet 12, the side of the support column 21 is a wave surface, and the side wall of the groove is a wave surface corresponding to the side of the support column 21. The inner wall of the shell 1 is set as a wave surface. The housing 1 is provided with a plurality of locking holes 15, and the upper cover 2 is provided with through holes 23 corresponding to the locking holes 15. During installation, the screw rod passes through the locking holes 15 to hoist the air distribution box as a whole. The air inlet pipe is sealed to the air inlet 11, and the air outlet 12 is sealed to the branch air pipe. The air inlet pipe inputs the air flow from the air inlet 11 into the air distribution cavity, and then outputs the air flow to each branch air pipe through the air outlet 12.

[0022] like Figure 3 In the wind box shown, the bottom surface of the upper cover 2 is a wave surface. In order to fix the shell 1 and the upper cover 2 to form a better sealing structure, a sealing boss 14 is provided along the opening of the upper end of the shell 1, and the upper cover 2 is provided with a sealing groove 22 corresponding to the sealing boss 14, and the sealing boss 14 is embedded in the sealing groove 22 to form a seal.

[0023] The above embodiments are exemplary, and their purpose is to illustrate the technical concept and features of the utility model so that people familiar with this field can understand the content of the utility model and implement it accordingly, and they cannot limit the protection scope of the utility model in turn. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A wind box, characterized in that: The invention comprises a shell (1) and an upper cover (2); the shell (1) is open at the upper end, an air inlet (11) is provided on one side of the shell (1), and an air outlet (12) is provided on the side of the shell (1) away from the air inlet (11); the upper cover (2) is arranged at the upper end of the shell (1), and the upper cover (2) and the shell (1) are sealed and connected to form an air distribution cavity; the inner wall of the shell (1) is arranged to be a wave surface.

2. The air distribution box according to claim 1, characterized in that: The bottom surface of the upper cover (2) is a wavy surface.

3. The air distribution box according to claim 1, characterized in that: The upper cover (2) is provided with a support column (21), and the bottom surface of the inner cavity of the shell (1) is provided with a groove corresponding to the support column (21), and the support column (21) extends into the groove for engagement.

4. The air distribution box according to claim 3, characterized in that: The cross section of the support column (21) is in the shape of a spindle cone from the air inlet (11) to the air outlet (12); and the side surface of the support column (21) is a wavy surface.

5. The air distribution box according to claim 1, characterized in that: The upper end of the shell (1) is provided with a sealing boss (14) along the circumference of the opening, the upper cover (2) is provided with a sealing groove (22) corresponding to the sealing boss (14), and the sealing boss (14) is embedded in the sealing groove (22) to form a seal.

6. The air distribution box according to claim 1, characterized in that: A plurality of air outlets (12) are provided, and the air outlets (12) are distributed in a polygonal shape.

7. The air distribution box according to claim 1, characterized in that: The shell (1) and the upper cover (2) are made of foamed polypropylene.

8. The air distribution box according to claim 1, characterized in that: The air outlet (12) is provided with a pre-embedded sheet metal part.

9. The air distribution box according to claim 1, characterized in that: The housing (1) is provided with a plurality of locking holes (15), and the upper cover (2) is provided with through holes (23) corresponding to the locking holes (15).

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