Variable temperature type wind tunnel device

Abstract

The utility model discloses a variable temperature type wind tunnel device which comprises a wind cylinder, the rear end of the wind cylinder is fixedly connected with a first wind channel, the rear end of the first wind channel is provided with a second wind channel, the rear end of the second wind channel is provided with a wind tunnel fan, and the front side of a wind outlet cover is provided with a rainwater simulator. Fixing frames are installed on the front side and the rear side of the interior of the first air channel correspondingly, a first column body is fixed to the middle of the fixing frame located on the rear side, conduction rods are rotatably installed on the outer side of the first column body at equal angles, heating elements are installed on the conduction rods, and a control piece is jointly installed at the front ends of the conduction rods and the rear end of a second column body. According to the temperature-variable wind tunnel device, after the plurality of conduction rods are driven by the control piece to be unfolded, the temperature change function of the wind tunnel is realized by using the heating element and the refrigerating element, and meanwhile, the plurality of conduction rods can be controlled to rotate and lean against the side parts of the corresponding first cylinders, so that the interference to airflow can be reduced, and the consumption can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wind tunnels, in particular to a temperature-variable wind tunnel device. Background Art

[0002] Wind tunnel experiments in fluid mechanics refer to an aerodynamic experimental method in which an aircraft or other object model is placed in a wind tunnel to study gas flow and its interaction with the model in order to understand the aerodynamic characteristics of the actual aircraft or other objects. During the experiment, a wind tunnel device that provides wind force is required.

[0003] In a patent application titled "A Variable Temperature Wind Tunnel Apparatus," with authorization publication number CN220772506U and publication date April 12, 2024, a heat-cooling conversion assembly is used to swap the cooling and heating mechanisms at both ends of a rotating rod according to experimental needs. This allows the same wind tunnel device to switch between cooling and heating modes for the airflow, making the wind tunnel experiment more comprehensive while eliminating the need for other external temperature control devices.

[0004] During the actual use of the above device, it is necessary to swap the positions of the cooling and heating systems and then perform a sealed connection, which is a rather cumbersome process. If the cooling and heating mechanisms are located inside the same wind tunnel, when the cooling and heating mechanisms are started separately, the other side that is not started will increase the obstruction to the airflow, resulting in an increase in the power consumption required, which is not conducive to energy-saving use.

[0005] Therefore, we proposed a variable temperature wind tunnel device to solve the above problems. Utility Model Content

[0006] 1. Technical problems to be solved by the utility model:

[0007] The purpose of the present invention is to provide a variable temperature wind tunnel device to solve the problems in the current market raised by the above background technology.

[0008] 2. Technical solution:

[0009] To achieve the above-mentioned object, the present invention provides the following technical solution: a variable temperature wind tunnel device, comprising a wind tube, wherein a rear end of the wind tube is fixedly connected to a first air duct, a rear end of the first air duct is mounted to a second air duct, and a rear end of the second air duct is mounted to a wind tunnel fan, an outlet hood is fixedly mounted to the front end of the wind tube, and a rain simulator is mounted on the front side of the outlet hood;

[0010] Fixed frames are installed on the front and rear sides of the air duct, and a first column is fixed in the middle of the rear fixed frame, and a second column is fixed in the middle of the front fixed frame. Conduction rods are installed on the outside of the first column for equal angle rotation, and heating elements are installed on the conduction rods. A control component is installed on the front ends of the several conduction rods and the rear ends of the second column, and the control component is used to drive the several conduction rods to rotate synchronously.

[0011] Furthermore, the control member includes a fixed rod fixedly mounted on the front end of the first column, the front end of the fixed rod is fixedly connected to the rear end of the second column, and the front end of the first column is installed with a threaded rod through a bearing, and the front end bearing of the threaded rod is installed on the rear end of the second column, and the outer sides of the fixed rod and the threaded rod are jointly sleeved with a movable block, and the outer wall of the movable block is rotatably installed with several connecting rods.

[0012] Through the above technical solution, when the threaded rod is controlled to rotate, the movable block can be driven to move through the guiding effect of the fixed rod.

[0013] Furthermore, the fixed rod and the threaded rod are parallel to each other, and the fixed rod and the threaded rod respectively form a fitting sliding connection and a threaded connection with the movable block.

[0014] Through the above technical solution, the movable block can be stably driven to move forward and backward.

[0015] Furthermore, the connecting rods and the transmission rods are arranged in a one-to-one correspondence, and the rear end of each connecting rod is rotationally connected to the front end of the corresponding transmission rod.

[0016] Through the above technical solution, when the movable block is displaced forward and backward, the cooperation between the connecting rod and the transmission rod can be used to drive the transmission rod to rotate.

[0017] Furthermore, the rainwater simulator includes a water tank installed below the air outlet hood, the water outlet pipe of the water tank is connected to the frame, and the frame is fixedly installed at the front end of the air outlet hood, and water outlets are evenly spaced on one side of the frame close to the center of the air outlet hood.

[0018] Through the above technical solution, the water in the water tank enters the frame from the water outlet pipe through the pump body, and then sprays out from the water outlet to achieve rainwater simulation.

[0019] Furthermore, a temperature sensor is installed inside the air outlet cover, and the interior of the air duct 2 has the same internal structure as that of the air duct 1, and a refrigeration element is installed on each conduction rod inside the air duct 2.

[0020] Through the above technical solution, the air can be heated and cooled respectively by the heating element in the air duct one and the cooling element in the air duct two to achieve temperature change.

[0021] 3.Beneficial effects:

[0022] The technical solution provided by the present invention is compared with the prior art. The present invention has a variable temperature wind tunnel device. After a control member drives a plurality of conductive rods to unfold, the heating elements and cooling elements on the conductive rods are used to achieve the temperature change function of the wind tunnel. At the same time, the plurality of conductive rods can be controlled to rotate and abut against the side of the corresponding first column, thereby reducing interference with the airflow and reducing consumption. The specific contents are as follows:

[0023] When the wind tunnel fan works, it sucks in air from the rear end of the wind tunnel fan. The air passes through air duct 2, air duct 1, and then through the wind cylinder, and finally blows out from the air outlet hood to form an airflow in the wind tunnel, which is used to simulate the wind in the actual environment. When the threaded rod inside air duct 1 rotates, the movable block threaded on the outside of the threaded rod moves under the limiting action of the fixed rod. During the movement, each conduction rod can rotate by cooperating with the corresponding connecting rod. When several conduction rods are unfolded inside air duct 1, the heating element on the conduction rod is started, and the heating element can heat the air in the wind tunnel. When the wind needs to be cooled, the same working principle is used to drive the conduction rod in air duct 1 to rotate in the opposite direction and stick to the side of the corresponding first column to reduce the obstruction of the airflow, and drive the conduction rod in air duct 2 to unfold, and at the same time, the refrigeration element on the conduction rod is started, and the refrigeration element can cool the air in the wind tunnel, thereby realizing the temperature change function of the wind tunnel device;

[0024] At the same time, when normal temperature is required, the conductive rods in the air duct one and the air duct two are respectively rotated to be close to the side of the corresponding first column, thereby reducing the obstruction of the air flow and the required power consumption, thus achieving a certain energy-saving effect;

[0025] When it is necessary to simulate a rainfall environment, the water in the water tank enters the frame from the outlet pipe through a water pump, and then flows out from the outlet, forming a rainfall effect at the outlet of the wind tunnel, thereby improving applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall side-view three-dimensional structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the air duct of the utility model;

[0028] Figure 3 This is a schematic diagram of the top view of the control component of the utility model;

[0029] Figure 4 This is a rear view structural diagram of the air duct of the utility model;

[0030] Figure 5For this utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0031] In the figure: 1. Wind duct; 2. Wind tunnel fan; 3. Air duct 1; 4. Air outlet hood; 5. Fixed frame; 6. First column; 7. Second column; 8. Conducting rod; 9. Control part; 91. Fixed rod; 92. Threaded rod; 93. Movable block; 94. Connecting rod; 10. Rain simulator; 101. Water tank; 102. Frame; 103. Water outlet; 11. Air duct 2. DETAILED DESCRIPTION

[0032] To facilitate understanding of the present invention, the following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, features specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0035] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connected," "fixed," "provided with," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances. Example

[0036] See also Figure 1-5 A variable temperature wind tunnel device includes a wind tube 1, a rear end of the wind tube 1 is fixedly connected to an air duct 1 3, a rear end of the air duct 1 3 is mounted to an air duct 2 11, and a rear end of the air duct 2 11 is mounted to a wind tunnel fan 2, a front end of the wind tube 1 is fixedly mounted to an air outlet hood 4, and a rain simulator 10 is mounted on the front side of the air outlet hood 4; the rain simulator 10 includes a water tank 101 mounted below the air outlet hood 4, an outlet pipe of the water tank 101 is connected to a frame 102, and the frame 102 is fixedly mounted to the front end of the air outlet hood 4, and water outlets 103 are evenly spaced on one side of the frame 102 near the center of the air outlet hood 4;

[0037] The wind tunnel fan 2 is started to draw air in from the rear end of the wind tunnel fan 2. The air passes through the second air duct 11, the first air duct 3, the air cylinder 1, and finally blown out from the air outlet hood 4, forming the airflow in the wind tunnel to simulate the wind in the actual environment. When it is necessary to simulate a rainfall environment, the water in the water tank 101 enters the frame 102 through the outlet pipe and then flows out from the outlet 103, forming a rainfall effect at the air outlet of the wind tunnel, thereby improving the applicability.

[0038] A fixing frame 5 is installed on both the front and rear sides of the air duct 3, and a first column 6 is fixed in the middle of the rear fixing frame 5, and a second column 7 is fixed in the middle of the front fixing frame 5. A conduction rod 8 is installed on the outside of the first column 6 for equal angle rotation, and a heating element is installed on the conduction rod 8. A control member 9 is installed at the front end of several conduction rods 8 and the rear end of the second column 7. The control member 9 is used to drive several conduction rods 8 to rotate synchronously; the control member 9 includes a fixing rod 91 fixedly installed at the front end of the first column 6, the front end of the fixing rod 91 is fixedly connected to the rear end of the second column 7, and the front end of the first column 6 is installed with a threaded rod 92 through a bearing, and the threaded rod 9 2 is mounted on the rear end of the second column 7, and a movable block 93 is sleeved on the outer sides of the fixed rod 91 and the threaded rod 92, and a plurality of connecting rods 94 are rotatably mounted on the outer wall of the movable block 93; the fixed rod 91 and the threaded rod 92 are parallel to each other, and the fixed rod 91 and the threaded rod 92 respectively form a fitting sliding connection and a threaded connection with the movable block 93; the connecting rods 94 are arranged in a one-to-one correspondence with the conduction rods 8, and the rear end of each connecting rod 94 forms a rotational connection with the front end of the corresponding conduction rod 8; a temperature sensor is installed inside the air outlet cover 4, and the interior of the air duct 11 is the same as the internal structure of the air duct 1 3, and a cooling element is installed on each conduction rod 8 inside the air duct 11;

[0039] When the threaded rod 92 inside the air duct 1 3 rotates, the movable block 93 threadedly sleeved on the outside of the threaded rod 92 moves under the limiting action of the fixed rod 91. During the movement, each conductive rod 8 can rotate by cooperating with the corresponding connecting rod 94. When several conductive rods 8 are deployed inside the air duct 1 3, the heating elements on the conductive rods 8 are activated, and the heating elements can heat the air in the wind tunnel. When the air needs to be cooled, the same working principle is used to drive the conductive rods 8 in the air duct 1 3 to rotate in the opposite direction and abut against the side of the corresponding first column 6 to reduce obstruction to the airflow. The conductive rods 8 in the air duct 2 11 are also driven to deploy, and the cooling elements on the conductive rods 8 are activated, and the cooling elements can cool the air in the wind tunnel, thereby realizing the temperature change function of the wind tunnel device. At the same time, when normal temperature is required, the conductive rods 8 in the air ducts 1 3 and 11 are respectively rotated and abut against the side of the corresponding first column 6, reducing obstruction to the airflow and reducing the required power consumption, achieving a certain energy-saving effect.

[0040] Working principle: When using the variable temperature wind tunnel device, Figure 1-5 As shown, the wind tunnel fan 2 is working, and air is sucked in from the rear end of the wind tunnel fan 2. The air passes through the air duct 2 11, the air duct 1 3, and then through the wind cylinder 1, and finally blown out from the air outlet hood 4 to form an airflow in the wind tunnel, which is used to simulate the wind in the actual environment. The conduction rods 8 in the air duct 1 3 and the air duct 2 11 are respectively unfolded, and the heating elements and the cooling elements on the corresponding conduction rods 8 are respectively started to heat and cool the airflow respectively to achieve temperature change. At the same time, when heating and cooling are not required, the conduction rod 8 can be rotated in the opposite direction and pressed against the side of the corresponding first column 6 to reduce the obstruction to the airflow and reduce the power consumption required, thereby achieving a certain energy-saving effect. At the same time, when it is necessary to simulate a rainfall environment, the water in the water tank 101 enters the frame 102 from the outlet pipe through the water pump, and is then sprayed out from the water outlet 103 to form a rainfall effect, thereby improving applicability.

[0041] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0042] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A variable temperature wind tunnel device, characterized in that: The wind tube (1) comprises a wind duct (1), wherein the rear end of the wind duct (1) is fixedly connected to a wind duct 1 (3), and the rear end of the wind duct 1 (3) is installed with a wind duct 2 (11), and the rear end of the wind duct 2 (11) is installed with a wind tunnel fan (2), and the front end of the wind duct (1) is fixedly installed with an air outlet cover (4), and the front side of the air outlet cover (4) is installed with a rain simulator (10); A fixing frame (5) is installed on both the front and rear sides of the air duct (3), and a first column (6) is fixed in the middle of the rear fixing frame (5), and a second column (7) is fixed in the middle of the front fixing frame (5). A conduction rod (8) is installed on the outer side of the first column (6) so as to rotate at an equal angle, and a heating element is installed on the conduction rod (8). A control member (9) is installed on the front ends of the plurality of conduction rods (8) and the rear ends of the second column (7), and the control member (9) is used to drive the plurality of conduction rods (8) to rotate synchronously.

2. The variable temperature wind tunnel device according to claim 1, characterized in that: The control member (9) includes a fixed rod (91) fixedly mounted on the front end of the first column (6), the front end of the fixed rod (91) is fixedly connected to the rear end of the second column (7), and the front end of the first column (6) is mounted with a threaded rod (92) through a bearing, and the front end bearing of the threaded rod (92) is mounted on the rear end of the second column (7), and the outer sides of the fixed rod (91) and the threaded rod (92) are jointly sleeved with a movable block (93), and the outer wall of the movable block (93) is rotatably mounted with a plurality of connecting rods (94).

3. The variable temperature wind tunnel device according to claim 2, characterized in that: The fixed rod (91) and the threaded rod (92) are parallel to each other, and the fixed rod (91) and the threaded rod (92) respectively form a fitting sliding connection and a threaded connection with the movable block (93).

4. The variable temperature wind tunnel device according to claim 2, characterized in that: The connecting rods (94) and the transmission rods (8) are arranged in a one-to-one correspondence, and the rear end of each connecting rod (94) is rotationally connected to the front end of the corresponding transmission rod (8).

5. The variable temperature wind tunnel device according to claim 1, characterized in that: The rainwater simulator (10) includes a water tank (101) installed below the air outlet hood (4), a water outlet pipe of the water tank (101) is connected to a frame (102), and the frame (102) is fixedly installed at the front end of the air outlet hood (4), and water outlets (103) are evenly spaced on one side of the frame (102) close to the center of the air outlet hood (4).

6. The variable temperature wind tunnel device according to claim 1, characterized in that: A temperature sensor is installed inside the air outlet cover (4), and the interior of the air duct 2 (11) has the same internal structure as that of the air duct 1 (3), and a refrigeration element is installed on each conduction rod (8) inside the air duct 2 (11).

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