90-degree turning ventilation device capable of uniformly distributing outlet air flow

Abstract

The utility model relates to a 90-degree turning ventilation device capable of enabling air outlet airflow to be evenly distributed, and belongs to the technical field of ventilation devices.The 90-degree turning ventilation device comprises a box body, the box body is in a wedge shape, the large end of the box body is an air inlet end face, an air inlet is formed in the air inlet end face, an air outlet end face is arranged on one side of the box body, and the air outlet end face is perpendicular to the air inlet end face; an air outlet is formed in the air outlet end face, a flow guide inclined face is arranged on the side, opposite to the air outlet end face, of the box body, and the flow guide inclined face is inclined to the air inlet end face. And the flow deflectors are used for guiding airflow to flow from the air inlet to the air outlet, and the flow deflectors are sequentially distributed in the box body. The air flow entering the box body is guided through the flow guide inclined plane and the flow guide sheets together, and 90-degree direction changing is achieved; in addition, the multiple flow deflectors are sequentially distributed in the box body, the possibility that airflow distribution in the box body is not uniform is reduced, and then the uniformity degree of airflow distribution at the air outlet is improved.

Description

Technical Field

[0001] This application relates to the field of ventilation devices, and more particularly to a 90° directional ventilation device that enables uniform distribution of exhaust airflow. Background Technology

[0002] The 90° reversing ventilation devices on the market that convert round pipes to rectangular inlets cannot immediately achieve a 90° change in air direction at the air outlet. At the same time, the air velocity distribution at the air outlet is uneven, the air flow direction is not good, and the flow velocity is too concentrated. The flow velocity is slower on the side closer to the round pipe inlet and faster on the side farther away from the round pipe inlet. Utility Model Content

[0003] In order to facilitate a 90° change of direction at the air outlet and improve the uniformity of airflow distribution at the air outlet, this application provides a 90° change of direction ventilation device that enables uniform distribution of airflow at the air outlet.

[0004] This application provides a 90° directional ventilation device that enables uniform airflow distribution, employing the following technical solution:

[0005] A 90° directional ventilation device that distributes airflow evenly includes:

[0006] The housing is wedge-shaped, with the larger end being the air inlet face. An air inlet is provided on the air inlet face. An air outlet face is provided on one side of the housing, which is perpendicular to the air inlet face. An air outlet is provided on the air outlet face. A guide slope is provided on the side of the housing opposite to the air outlet face, and the guide slope is inclined to the air inlet face.

[0007] A guide vane is used to guide the airflow from the air inlet to the air outlet. Multiple guide vanes are provided and are distributed sequentially in the housing.

[0008] Optionally, multiple air guide vanes are arranged at equal intervals on one side of the housing near the air outlet.

[0009] Optionally, the air inlet of the housing is provided with a first flange for connecting a circular pipe.

[0010] Optionally, the air outlet of the housing is provided with a second flange for connecting the rectangular tube.

[0011] Optionally, the guide vane includes a first folded edge and a second folded edge, the first folded edge being parallel to the guide slope, the second folded edge being perpendicular to the air outlet end face, and a guide angle region being formed between the first folded edge and the second folded edge, the guide angle region being oriented towards the air inlet.

[0012] Optionally, the first folded edge and / or the second folded edge are provided with a flange, and the flange is provided with a mounting hole.

[0013] Optionally, the outer side of the housing is provided with mounting ears, and the mounting ears are provided with waist-shaped holes.

[0014] In summary, this application includes at least one of the following beneficial technical effects:

[0015] 1. When using this application, the circular tube to be connected is connected to the air inlet, and the rectangular tube to be connected is connected to the air outlet. When the circular tube outputs airflow into the housing, the guide slope can guide the airflow, changing the direction of the airflow inside the housing and causing the airflow to flow out from the air outlet, achieving a 90° change of direction. During this process, when the airflow passes through the guide vanes, each guide vane can guide the airflow, thus facilitating the change of airflow direction. In addition, the multiple guide vanes are distributed sequentially in the housing, which helps to reduce the possibility of uneven airflow distribution inside the housing, thereby improving the uniformity of airflow distribution at the air outlet.

[0016] 2. By arranging multiple guide vanes at equal intervals on the side of the housing near the air outlet, each guide surface can evenly receive the airflow entering the housing from the air inlet and perform equal airflow direction changes, so that the airflow guided by each guide vane at the air outlet remains relatively balanced, which helps to further improve the uniformity of airflow distribution at the air outlet.

[0017] 3. After a period of use, dust and oil stains are easily accumulated on the inner wall of the box and the guide vanes, causing poor airflow. With the setting of the flange and mounting holes, the guide vanes can be installed into the box with fasteners. The guide vanes can be detached and fixed, which is convenient for disassembly and cleaning of the variable ventilation device.

[0018] 4. The installation of the side lugs facilitates the installation of the directional ventilation device in the designated installation position; the design of the waist-shaped holes provides a certain amount of misalignment space for the connection between the side lugs and the corresponding connectors at the designated installation position, thereby improving the installation flexibility of the directional ventilation device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a 90° directional ventilation device that enables uniform distribution of exhaust airflow according to an embodiment of this application.

[0020] Figure 2 This is a cross-sectional view illustrating the internal structure of the box in the embodiments of this application.

[0021] Figure 3 This is a schematic diagram illustrating the specific structure of the guide vane in the embodiments of this application.

[0022] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Air inlet face; 111. Air inlet; 12. Air outlet face; 121. Air outlet; 13. Guide slope; 2. First flange; 3. Second flange; 4. Mounting lug; 41. Waist-shaped hole; 5. Guide vane; 51. First folded edge; 52. Second folded edge; 53. Guide angle area; 54. Flanged edge; 541. Mounting hole. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail below.

[0024] Example:

[0025] This application discloses a 90° directional ventilation device that enables uniform distribution of exhaust airflow. (Refer to...) Figure 1-2 A 90° directional ventilation device for uniformly distributing exhaust airflow includes a wedge-shaped housing 1, with its larger end serving as an air inlet face 11 and an air inlet 111 formed thereon; an air outlet face 12 is provided on one side of the housing 1, perpendicular to the air inlet face 11, and an air outlet 121 is formed thereon on the air outlet face 12; a guide slope 13 is provided on the side of the housing 1 opposite to the air outlet face 12, and the guide slope 13 is inclined to the air inlet face 11. In this embodiment, the air inlet 111 is circular, the air outlet 121 is rectangular, the number of air inlets 111 is one, and the number of air outlets 121 can be one, two, or more, corresponding to connection structures of "one inlet and one outlet", "one inlet and two outlets", and "one inlet and multiple outlets", respectively.

[0026] Reference Figure 1 To facilitate the connection of the variable ventilation device with the circular and rectangular pipes to be connected, a first flange 2 for connecting the circular pipe is fixed at the air inlet 111 of the housing 1, and a second flange 3 for connecting the rectangular pipe is fixed at the air outlet 121. In this embodiment, the first flange 2 is cylindrical in shape corresponding to the air inlet 111, and the second flange 3 is rectangular in shape corresponding to the air outlet 121.

[0027] Reference Figure 1 To facilitate the installation of the variable-direction ventilation device at the designated installation location, mounting lugs 4 are fixed on the two outer walls of the housing 1 adjacent to the air outlet face 12. The mounting lugs 4 have oblong holes 41. The oblong holes 41 provide a certain amount of misalignment space for the connection between the mounting lugs 4 and the corresponding connecting parts at the designated installation location, thereby improving the installation flexibility of the variable-direction ventilation device.

[0028] Reference Figure 2-3Inside the housing 1, a guide vane 5 is installed. The guide vane 5 is used to guide the airflow from the air inlet 111 to the air outlet 121. The guide vane 5 is a sheet metal component, which includes a first folded edge 51 and a second folded edge 52 integrally bent. The first folded edge 51 is parallel to the guide slope 13, and the second folded edge 52 is perpendicular to the air outlet end face 12. A guide angle region 53 is formed between the first folded edge 51 and the second folded edge 52, and the guide angle region 53 is set towards the air inlet 111.

[0029] Reference Figure 3 To facilitate the installation of the air guide plate 5, both ends of the first folded edge 51 and / or the second folded edge 52 are integrally bent with flanges 54, and mounting holes 541 are provided on the flanges 54. Furthermore, after a period of use, dust and oil easily accumulate on the inner wall of the housing 1 and the air guide plate 5, causing poor airflow. The flanges 54 and mounting holes 541 allow the air guide plate 5 to be installed into the housing 1 using fasteners, enabling detachable fixing of the air guide plate 5, facilitating disassembly and cleaning of the variable ventilation device. In this embodiment, the flanges 54 are located on the second folded edge 52, which is closer to the air outlet 121 than when located on the first folded edge 51, making disassembly and assembly easier.

[0030] Reference Figure 2 Multiple guide vanes 5 are arranged sequentially within the housing 1. When using this variable-direction ventilation device, the circular pipe to be connected is connected to the air inlet 111, and the rectangular pipe to be connected is connected to the air outlet 121. When the circular pipe outputs airflow into the housing 1, the guide slope 13 acts as a guide, changing the direction of the airflow within the housing 1 and causing the airflow to exit from the air outlet 121, achieving a 90° change of direction. During this process, each guide vane 5 guides the airflow as it passes through, facilitating the change of airflow direction. Furthermore, the sequential arrangement of multiple guide vanes 5 within the housing 1 helps reduce the possibility of uneven airflow distribution within the housing 1, thereby improving the uniformity of airflow distribution at the air outlet 121.

[0031] Furthermore, multiple guide vanes 5 are arranged at equal intervals on one side of the housing 1 near the air outlet 121. In this way, when air enters through the air inlet 111, each guide vane can uniformly receive the airflow entering the housing 1 from the air inlet 111 and perform equal airflow reversal, so that the airflow guided by each guide vane 5 at the air outlet 121 remains relatively balanced, which helps to further improve the uniformity of airflow distribution at the air outlet 121.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A 90° directional ventilation device that enables uniform airflow distribution, characterized in that, include: The box (1) is wedge-shaped, with the large end being the air inlet face (11). The air inlet face (11) is provided with an air inlet (111). The box (1) has an air outlet face (12) on one side. The air outlet face (12) is perpendicular to the air inlet face (11). The air outlet face (12) is provided with an air outlet (121). The box (1) has a guide slope (13) on one side opposite to the air outlet face (12). The guide slope (13) is inclined to the air inlet face (11). The air guide vane (5) is used to guide the airflow from the air inlet (111) to the air outlet (121). Multiple air guide vanes (5) are provided and are distributed sequentially in the housing (1).

2. The 90° directional ventilation device for uniformly distributing exhaust airflow according to claim 1, characterized in that: Multiple air guide vanes (5) are arranged at equal intervals on one side of the housing (1) near the air outlet (121).

3. The 90° directional ventilation device for uniformly distributing exhaust airflow according to claim 1, characterized in that: The air inlet (111) of the housing (1) is provided with a first flange (2) for connecting the round pipe.

4. A 90° directional ventilation device for uniformly distributing exhaust airflow according to claim 1, characterized in that: The air outlet (121) of the housing (1) is provided with a second flange (3) for connecting the rectangular tube.

5. A 90° directional ventilation device for uniformly distributing exhaust airflow according to claim 1, characterized in that: The guide vane (5) includes a first folded edge (51) and a second folded edge (52) with bends. The first folded edge (51) is parallel to the guide slope (13), and the second folded edge (52) is perpendicular to the air outlet end face (12). A guide angle area (53) is formed between the first folded edge (51) and the second folded edge (52), and the guide angle area (53) is set towards the air inlet (111).

6. A 90° directional ventilation device for uniformly distributing exhaust airflow according to claim 5, characterized in that: The first folded edge (51) and / or the second folded edge (52) are provided with a flange (54), and the flange (54) is provided with a mounting hole (541).

7. A 90° directional ventilation device for uniformly distributing exhaust airflow according to claim 1, characterized in that: The outer side of the housing (1) is provided with mounting ears (4), and the mounting ears (4) are provided with waist-shaped holes (41).

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