Humidifying device in a wind tunnel and wind tunnel

Abstract

The present invention discloses a humidifying device in a wind tunnel. The wind tunnel is an air flow closed-loop circuit, and a power fan is arranged in the wind tunnel. The wind tunnel includes an air flow diffuser section and an experimental section. The air flow diffuser section is located downstream of the power fan and close to the power fan, and the experimental section is located downstream of the air flow diffuser section. The humidifying device in the wind tunnel includes a frame body and a plurality of nozzles. The frame body is arranged in the middle of the air flow diffuser section and perpendicular to the air flow incoming direction. The frame body is in the shape of an involute, so that the cross-sectional shape of the frame body is basically the same as the cross-sectional shape of the air flow flowing through the frame body, thereby making the air flow flowing through the frame body evenly distributed on the cross-section of the frame body. The plurality of nozzles are arranged on the frame body and used for uniformly spraying the air flow flowing through the frame body. The present invention can improve the humidifying and humidity control efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of wind tunnels, and in particular to a humidifying device and a wind tunnel in a wind tunnel. Background Art

[0002] As Figures 1 to 4 shown, the spray humidifying device 300 in the existing technology wind tunnel is generally located in the air flow diffusion section 200 downstream of the power fan 100 and perpendicular to the air flow incoming direction. The air flow blown out by the power fan 100 brings the water mist sprayed out by the spray humidifying device 300 into the experimental section to control the air humidity in the experimental section 400. Since most of the existing spray humidifying devices 300 adopt the form of a rectangular or square frame, and the nozzles are installed on the frame in a certain arrangement, because the air flow form blown out by the power fan in the wind tunnel is cylindrical and slowly diffuses along the radial direction of the cylinder, the air flow distribution passing through the cross section of the spray humidifying device 300 is very uneven, affecting the humidifying and humidity control efficiency in the experimental section 400. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, an object of the present invention is to provide a humidifying device in a wind tunnel with high humidifying and humidity control efficiency.

[0004] According to an embodiment of one aspect of the present invention, for the humidifying device in a wind tunnel, the wind tunnel is an air flow closed-loop circuit, a power fan is arranged in the wind tunnel, the wind tunnel includes an air flow diffusion section and an experimental section, the air flow diffusion section is located downstream of the power fan and close to the power fan, and the experimental section is located downstream of the air flow diffusion section; the humidifying device in the wind tunnel includes:

[0005] A frame body, the frame body is arranged in the middle of the air flow diffusion section and perpendicular to the air flow incoming direction, and the frame body is in the shape of an involute line, so that the cross-sectional shape of the frame body is basically the same as the cross-sectional shape of the air flow passing through the frame body, so that the air flow passing through the frame body is evenly distributed on the cross section of the frame body;

[0006] A plurality of nozzles, the plurality of nozzles are arranged on the frame body and used for uniformly spraying water mist to the air flow passing through the frame body.

[0007] The humidifying device in the wind tunnel according to an embodiment of one aspect of the present invention is arranged in the middle of the airflow diffusion section perpendicular to the airflow incoming direction, and the frame body is in an involute shape. In this way, the cross-sectional shape of the frame body can be basically the same as the cross-sectional shape of the airflow flowing through the frame body, so that the airflow flowing through the frame body is evenly distributed on the cross-section of the frame body. Through a plurality of nozzles arranged on the frame body, the airflow flowing through the frame body can be evenly sprayed with mist, and the mist is brought into the test section by the airflow, forming an effective control of the air humidity in the test section, and effectively improving the humidifying and humidity control efficiency. In addition, the structure of the humidifying device 1 in the wind tunnel according to an embodiment of one aspect of the present invention is simple and easy to process.

[0008] According to an embodiment of one aspect of the present invention, the rotation center of the involute of the frame body coincides with the center of the wind tunnel at the installation position of the frame body.

[0009] According to an embodiment of one aspect of the present invention, the initial base circle radius of the involute of the frame body is 0.033 times the radius of the power fan.

[0010] According to an embodiment of one aspect of the present invention, the frame body is in a three-turn involute shape.

[0011] According to an embodiment of one aspect of the present invention, the involute expansion speed of the frame body in the radial direction is 150 mm / 10°.

[0012] According to an embodiment of one aspect of the present invention, the arrangement mode of the plurality of nozzles is: evenly divided into a plurality of equal parts at intervals of 30° along the rotation direction of the involute of the frame body, and the plurality of nozzles are respectively installed at the equal division points in one-to-one correspondence.

[0013] According to an embodiment of one aspect of the present invention, it further includes two pipelines respectively connected to the inner end and the outer end of the frame body, and the two pipelines respectively pass through the side walls of the wind tunnel.

[0014] The humidifying device in the wind tunnel according to an embodiment of another aspect of the present invention, the wind tunnel is an airflow closed-loop circuit, a power fan is arranged in the wind tunnel, the wind tunnel includes an airflow diffusion section and a test section, the airflow diffusion section is located downstream of the power fan and close to the power fan, and the test section is located downstream of the airflow diffusion section;; The humidifying device in the wind tunnel includes:

[0015] A frame body, which is arranged in the middle of the air flow diffusion section and perpendicular to the air flow incoming direction. The frame body is in the shape of three involute lines. The rotation center of the involute of the frame body coincides with the center of the wind tunnel at the installation position of the frame body. The initial base circle radius of the involute of the frame body is 0.033 times the radius of the power fan, and the involute expansion speed of the frame body in the radial direction is 150 mm / 10°.

[0016] A plurality of nozzles. The arrangement of the plurality of nozzles on the frame body is as follows: evenly divided into 12 equal parts at intervals of 30° along the rotation direction of the involute of the frame body, and the plurality of nozzles are respectively installed at the equal division points.

[0017] For the humidifying device in the wind tunnel according to another embodiment of the present invention, since the frame body is arranged perpendicular to the air flow incoming direction in the middle of the air flow diffusion section and the frame body is in the shape of three involute lines, the cross-sectional shape of the frame body can be basically the same as the cross-sectional shape of the air flow flowing through the frame body, so that the air flow flowing through the frame body is evenly distributed on the cross-section of the frame body. Through a plurality of nozzles arranged specifically on the frame body, the air flow flowing through the frame body can be evenly sprayed with mist, and the mist is brought into the test section through the air flow, forming an effective control of the air humidity in the test section, and the humidifying and humidity control efficiency can be effectively improved. In addition, the structure of the humidifying device in the wind tunnel according to another embodiment of the present invention is simple and easy to process.

[0018] The present invention also provides a wind tunnel.

[0019] The wind tunnel according to the embodiment of the present invention includes the humidifying device in the wind tunnel according to any one of the embodiments of one aspect of the present invention, or includes the humidifying device in the wind tunnel according to the embodiment of another aspect of the present invention.

[0020] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a schematic diagram of a prior art wind tunnel.

[0023] Figure 2 is Figure 1 The cross-sectional schematic diagram at A-A in

[0024] Figure 3 is Figure 1 The cross-sectional schematic diagram at B-B in

[0025] Figure 4 For Figure 3 the humidifying device in

[0026] Figure 5 Figure showing the wind tunnel to which the humidifying device in the wind tunnel of the embodiment of the present invention is applied.

[0027] Figure 6 For Figure 5 the schematic cross-sectional view at C-C in

[0028] Figure 7 For Figure 5 the partial three-dimensional schematic view after sectioning at C-C in

[0029] Figure 8 Schematic structural view of the humidifying device in the wind tunnel of the present invention.

[0030] Reference numerals:

[0031] Humidifying device 1 in the wind tunnel, frame main body 101, nozzle 102, pipeline 103

[0032] Power fan 2, air flow diffusion section 3, experimental section 4 Detailed implementation manners

[0033] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0034] Below in combination with Figures 5 to 8 to describe the humidifying device 1 in the wind tunnel according to an embodiment of one aspect of the present invention.

[0035] As Figures 5 to 8As shown in the figure, the humidifying device 1 in the wind tunnel according to an embodiment of one aspect of the present invention has a wind tunnel that is a closed-loop air flow circuit. A power fan 2 is provided in the wind tunnel. The wind tunnel includes an air flow diffuser section 3 and an experimental section 4. The air flow diffuser section 3 is located downstream of the power fan 2 and is close to the power fan 2. The experimental section 4 is located downstream of the air flow diffuser section 2. It can be understood that by providing the power fan 2, power can be provided to make the air flow circulate in the closed-loop air flow circuit, providing experimental environmental conditions for the experimental section 4. The humidifying device 1 in the wind tunnel includes a frame main body 101 and a plurality of nozzles 102. Among them, the frame main body 101 is arranged in the middle of the air flow diffuser section 3 and is perpendicular to the air flow incoming direction. The frame main body 101 is in an involute shape, so that the cross-sectional shape of the frame main body 101 is basically the same as the cross-sectional shape of the air flow flowing through the frame main body 101, so that the air flow flowing through the frame main body 101 is evenly distributed on the cross-section of the frame main body 101. A plurality of nozzles 102 are arranged on the frame main body 101 for evenly spraying the air flow flowing through the frame main body 101.

[0036] For the humidifying device 1 in the wind tunnel according to an embodiment of one aspect of the present invention, since the frame main body 101 is arranged perpendicular to the air flow incoming direction in the middle of the air flow diffuser section 3 and the frame main body 101 is in an involute shape, this can make the cross-sectional shape of the frame main body 101 basically the same as the cross-sectional shape of the air flow flowing through the frame main body 101, so that the air flow flowing through the frame main body 101 is evenly distributed on the cross-section of the frame main body 101. Through the plurality of nozzles 102 arranged on the frame main body 101, the air flow flowing through the frame main body 101 can be evenly sprayed, and the mist is brought into the experimental section 4 through the air flow, forming an effective control of the air humidity in the experimental section 4, and the humidifying and humidity control efficiency can be effectively improved. In addition, the structure of the humidifying device 1 in the wind tunnel according to an embodiment of one aspect of the present invention is simple and easy to process.

[0037] According to an embodiment of one aspect of the present invention, the rotation center of the involute of the frame main body 101 coincides with the center of the wind tunnel at the installation position of the frame main body 101. This is beneficial to ensuring that the cross-sectional shape of the frame main body 101 is basically the same as the cross-sectional shape of the air flow flowing through the frame main body 101, so that the air flow flowing through the frame main body 101 is evenly distributed on the cross-section of the frame main body 101, and is beneficial to improving the humidifying and humidity control efficiency.

[0038] According to an embodiment of one aspect of the present invention, the initial base circle radius of the involute of the frame main body 101 is 0.033 times the radius of the power fan 2. This is beneficial to ensuring that the cross-sectional shape of the frame main body 101 is basically the same as the cross-sectional shape of the air flow flowing through the frame main body 101, so that the air flow flowing through the frame main body 101 is evenly distributed on the cross-section of the frame main body 101, and is beneficial to improving the humidifying and humidity control efficiency.

[0039] According to an embodiment of one aspect of the present invention, the frame body 101 is in the shape of an involute with three turns, that is, the involute of the frame body expands 1080° along the rotation center. This is beneficial to ensuring that the cross-sectional shape of the frame body 101 is basically the same as the cross-sectional shape of the air flow passing through the frame body 101, so that the air flow passing through the frame body 101 is evenly distributed on the cross-section of the frame body 101, which is beneficial to improving the humidification and humidity control efficiency, and the structure of the frame body 101 is simple.

[0040] According to an embodiment of one aspect of the present invention, the involute expansion speed of the frame body 101 along the radial direction is 150 mm / 10°. This is beneficial to ensuring that the cross-sectional shape of the frame body 101 is basically the same as the cross-sectional shape of the air flow passing through the frame body 101, so that the air flow passing through the frame body 101 is evenly distributed on the cross-section of the frame body 101, which is beneficial to improving the humidification and humidity control efficiency.

[0041] According to an embodiment of one aspect of the present invention, the arrangement of the plurality of nozzles 102 is as follows: along the rotation direction of the involute of the frame body 101, it is equally divided into a plurality of equal parts at intervals of 30°, for example, it can be 12 equal parts, and the plurality of nozzles 102 are correspondingly installed at the equal division points one by one. Thus, the plurality of nozzles 102 spray the air flow passing through the frame body 101 evenly, which is beneficial to improving the humidification and humidity control efficiency.

[0042] According to an embodiment of one aspect of the present invention, it further includes two pipelines 103 respectively connected to the inner end and the outer end of the frame body 101, and the two pipelines 103 respectively pass through the side walls of the wind tunnel. In this way, water can flow through one pipeline 103, the frame body 101 and the other pipeline 103 in sequence, ensuring that the nozzles 102 on the frame body 101 can spray mist when opened.

[0043] Next, in combination with Figures 5 to 8 to describe the humidifying device 1 in the wind tunnel according to an embodiment of another aspect of the present invention.

[0044] As Figures 5 to 8As shown, the humidifying device 1 in the wind tunnel according to another embodiment of the present invention, the wind tunnel is a closed-loop air flow circuit, a power fan 2 is arranged in the wind tunnel, the wind tunnel includes an air flow diffuser section 3 and an experimental section 4, the air flow diffuser section 3 is located downstream of the power fan 2 and is close to the power fan 2, and the experimental section 4 is located downstream of the air flow diffuser section 2. It can be understood that by setting the power fan 2, power can be provided to make the air flow circulate in the closed-loop air flow circuit, providing experimental environmental conditions for the experimental section 4; the humidifying device 1 in the wind tunnel includes a frame body 101 and a plurality of nozzles 102. The frame body 101 is arranged in the middle of the air flow diffuser section 3 perpendicular to the air flow incoming direction. The frame body 101 is in the shape of a three-turn involute. The rotation center of the involute of the frame body 101 coincides with the center of the wind tunnel at the installation position of the frame body 101. The initial base circle radius of the involute of the frame body 101 is 0.033 times the radius of the power fan 2. The involute expansion speed of the frame body 101 in the radial direction is 150 mm / 10°. The arrangement of the plurality of nozzles 102 on the frame body 101 is as follows: evenly divided into 12 equal parts at intervals of 30° along the rotation direction of the involute of the frame body 101, and the plurality of nozzles 102 are correspondingly installed at the equal division points.

[0045] For the humidifying device 1 in the wind tunnel according to another embodiment of the present invention, since the frame body 101 is arranged in the middle of the air flow diffuser section 3 perpendicular to the air flow incoming direction and the frame body 101 is in the shape of a three-turn involute, this can make the cross-sectional shape of the frame body 101 basically the same as the cross-sectional shape of the air flow flowing through the frame body 101, so that the air flow flowing through the frame body 101 is evenly distributed on the cross-section of the frame body 101. Through the plurality of nozzles 102 arranged specifically on the frame body 101, the air flow flowing through the frame body 101 can be evenly sprayed with mist, and the mist is brought into the experimental section 4 through the air flow, forming an effective control of the air humidity in the experimental section 4, and can effectively improve the humidifying and humidity control efficiency. In addition, the structure of the humidifying device 1 in the wind tunnel according to another embodiment of the present invention is simple and easy to process.

[0046] The present invention also proposes a wind tunnel.

[0047] The wind tunnel according to an embodiment of the present invention includes the humidifying device in the wind tunnel according to any one of the embodiments of one aspect of the present invention, or includes the accelerated humidifying device in the wind tunnel according to another embodiment of the present invention.

[0048] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0049] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A humidifying device in a wind tunnel, the wind tunnel being an air flow closed-loop circuit, a power fan being arranged in the wind tunnel, the wind tunnel including an air flow diffuser section and a test section, the air flow diffuser section being located downstream of the power fan and close to the power fan, and the test section being located downstream of the air flow diffuser section; characterized in that, The humidifying device in the wind tunnel includes: A frame body, which is arranged in the middle of the airflow diffusion section and perpendicular to the airflow incoming direction. The frame body is in the shape of an involute, so that the cross-sectional shape of the frame body is basically the same as the cross-sectional shape of the airflow flowing through the frame body, thereby making the airflow flowing through the frame body evenly distributed on the cross-section of the frame body; A plurality of nozzles, which are arranged on the frame body and used for uniformly spraying the airflow flowing through the frame body; The rotation center of the involute of the frame body coincides with the center of the wind tunnel at the installation position of the frame body; The frame body is in the shape of a three-turn involute.

2. The humidifying device in the wind tunnel according to claim 1, characterized in that, The initial base circle radius of the involute of the frame body is 0.033 times the radius of the power fan.

3. The humidifying device in the wind tunnel according to claim 1, characterized in that, The involute expansion speed of the frame body along the radial direction is 150 mm / 10°.

4. The humidifying device in the wind tunnel according to claim 1, characterized in that, The arrangement of the plurality of nozzles is as follows: Along the rotation direction of the involute of the frame body, it is equally divided into a plurality of equal parts at intervals of 30°, and the plurality of nozzles are respectively installed at the equal division points in one-to-one correspondence.

5. The humidifying device in the wind tunnel according to claim 1, wherein It also includes two pipelines respectively connected to the inner end and the outer end of the frame body, and the two pipelines respectively pass through the side walls of the wind tunnel.

6. A humidifying device in a wind tunnel, the wind tunnel being an air flow closed-loop circuit, a power fan being provided in the wind tunnel, the wind tunnel including an air flow diffuser section and a test section, the air flow diffuser section being located downstream of the power fan and close to the power fan, and the test section being located downstream of the air flow diffuser section; characterized in that, The humidifying device in the wind tunnel includes: A frame body, which is arranged in the middle of the airflow diffusion section and perpendicular to the airflow incoming direction. The frame body is in the shape of a three-turn involute. The rotation center of the involute of the frame body coincides with the center of the wind tunnel at the installation position of the frame body. The initial base circle radius of the involute of the frame body is 0.033 times the radius of the power fan. The involute expansion speed of the frame body along the radial direction is 150 mm / 10°; A plurality of nozzles, and the arrangement of the plurality of nozzles on the frame body is as follows: Along the rotation direction of the involute of the frame body, it is equally divided into 12 equal parts at intervals of 30°, and the plurality of nozzles are respectively installed at the equal division points in one-to-one correspondence; Two pipelines respectively connected to the inner end and the outer end of the frame body, and the two pipelines respectively pass through the side walls of the wind tunnel.

7. A wind tunnel, characterized in that, It includes the humidifying device in the wind tunnel according to any one of claims 1 to 5, or includes the humidifying device in the wind tunnel according to claim 6.

Images