A high and low temperature damp heat test chamber

Abstract

The application discloses a high-low temperature damp heat test chamber, and relates to the technical field of laboratory equipment, which comprises a test cavity formed by surrounding peripheral heat preservation materials, and a horizontal wind field is formed in the test cavity; a plurality of test racks are installed in the test cavity, and the test racks are configured as: the windward surface of a sample on a fixing rack is driven to rotate around a cylindrical cam by the horizontal wind field, and when rotating to the other side, the sample is driven to rotate to the crosswind surface by the action of a crank, a rotating shaft and the cylindrical cam, so that the sample is driven to rotate around the cylindrical cam in one direction under the action of the horizontal wind field, and the test of different angle wind blowing conditions is realized. The application provides a high-low temperature damp heat test chamber, a fixing rack in the form of a blade is used to fix a sample, the sample is driven to revolve and rotate under the action of the horizontal wind field, the sample is blown by multiple surfaces, and the application is more suitable for actual working conditions, and has a certain popularization prospect for the test of equipment, automobile parts, such as exterior trim panels, equipment coaming and the like.

Description

A high and low temperature humidity test chamber Technical Field

[0001] This invention relates to the field of laboratory equipment technology, specifically a high and low temperature humidity test chamber. Background Technology

[0002] High and low temperature test chambers: Suitable for reliability testing of industrial products under high and low temperature conditions. They are used to test the performance of components and materials in electronic and electrical products, automotive and motorcycle products, aerospace products, shipbuilding and weaponry products, as well as products from universities and research institutions, under cyclical high and low temperature conditions. These chambers simulate the temperature variations in the atmospheric environment. They are primarily designed for the adaptability testing of electrical and electronic products, their components, and other materials during transportation and use in combined high and low temperature environments. They are used in product design, improvement, qualification, and inspection processes.

[0003] The published Chinese invention patent CN114733581A proposes a method of testing by loading samples with sample holder blades. Although this method can improve the uniformity of humidity and temperature in the test chamber, its testing flexibility is relatively low due to the limitations of the blade structure and the fixed wind direction. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a high and low temperature humidity test chamber.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] The present invention provides a high and low temperature humidity test chamber, comprising a test cavity formed by an outer insulation material, a treatment air duct provided on one side of the test cavity, the two ends of the treatment air duct being connected to the two sides of the test cavity via air venting plates, and an exhaust fan installed inside the treatment air duct.

[0007] Two air-expelling enclosures are installed in the middle of the test chamber, facing each other from left to right. The air-expelling enclosures enclose the test chamber, and sealing plates are installed at the front and rear ends of the test chamber to connect with the air-expelling enclosures, so as to form a horizontal wind field in the test chamber under the action of the induced draft fan.

[0008] The test chamber is equipped with several test frames. Each test frame includes a vertical shaft fixed to the ground of the test chamber. A cylindrical cam is fixedly installed on the upper part of the vertical shaft. The outer edge of the cylindrical cam is rotatably connected to a support frame. A fixing frame for fixing the sample is installed on the support frame. A crank is fixedly installed at one end of the fixing frame. A rotating shaft is fixed at one end of the crank. One end of the rotating shaft is embedded in the track groove of the cylindrical cam.

[0009] The test frame is configured such that the windward side of the sample on the fixed frame is driven by the horizontal wind field to rotate around the cylindrical cam. When it rotates to the other side, it rotates to the side wind side under the action of the crank, shaft and cylindrical cam, so as to realize that under the action of the horizontal wind field, the sample rotates around the cylindrical cam in one direction. The sample rotates by the cylindrical cam during rotation, thereby realizing the test of wind blowing conditions at different angles.

[0010] As a preferred embodiment of the present invention, the trajectory groove of the cylindrical cam includes four sections, two of which are horizontal grooves distributed at different heights, and the other two are inclined grooves connecting the two horizontal grooves. When the rotating shaft is in the higher horizontal groove, the sample remains vertical, and when the rotating shaft is in the lower horizontal groove, the sample remains horizontal.

[0011] As a preferred embodiment of the present invention, the trajectory groove is provided with multiple sets of high and low intervals on the cylindrical cam, and multiple fixing brackets are provided accordingly.

[0012] As a preferred technical solution of the present invention, a set of track grooves is provided, and multiple fixed frames are provided. The crank outside the fixed frame of one of them is provided with a rotating shaft, and the cranks of the other fixed frames are connected to the rotating shaft through a linkage mechanism to form a linkage.

[0013] As a preferred embodiment of the present invention, an atomizing nozzle is provided in the circumferential direction of the vertical shaft, and the atomizing nozzle is located above or below the cylindrical cam.

[0014] As a preferred embodiment of the present invention, the support frame is arranged in a ring array around the cylindrical cam. The side of the support frame is used to install the fixing frame. The fixing frame is arranged in four groups that are spaced apart from each other. Each group consists of several fixing frames that are distributed vertically at intervals.

[0015] As a preferred embodiment of the present invention, an atomizing platform is fixedly installed on the vertical shaft, with the fixed surface of the atomizing platform facing the windward side. The atomizing platform can be used to release atomized solution, thereby enabling simulation testing under different working conditions.

[0016] As a preferred embodiment of the present invention, two atomizing platforms are provided, and the two atomizing platforms are at an angle of 20°-45° to each other, and a number of nozzles are provided on the side or top of the atomizing platforms.

[0017] As a preferred embodiment of the present invention, a base is fixedly provided at the bottom of the vertical shaft, and pipes are connected inside both the vertical shaft and the base. The test chamber is connected to the base via a pre-embedded underground pipe for conveying materials to the atomizing table.

[0018] As a preferred embodiment of the present invention, a heater and an evaporator are installed inside the processing air duct, and a refrigeration unit is connected to one side of the evaporator.

[0019] The beneficial effects of this invention are:

[0020] This invention proposes a high and low temperature humidity test chamber, which uses a blade-type mounting frame to fix the sample. At the same time, a cylindrical cam is installed to make it revolve and rotate under the action of a horizontal wind field, so that the sample is exposed to wind from multiple sides, which is more in line with the actual working conditions. It has certain prospects for application in the testing of equipment and automotive parts, such as car windshields, exterior panels, and equipment enclosures. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a schematic diagram of the test frame structure of the present invention;

[0024] Figure 3 is a schematic diagram of the cylindrical cam structure of the present invention;

[0025] Figure 4 is a schematic diagram of the fixing frame structure of the present invention;

[0026] Figure 5 is a schematic diagram of the linkage mechanism of the present invention;

[0027] Figure 6 is a schematic diagram of the single-layer cylindrical cam mounting structure of the present invention;

[0028] Figure 7 is a schematic diagram of the atomizing table installation structure of the present invention;

[0029] Figure 8 is a schematic diagram of the operation of the test frame of the present invention in a horizontal wind direction.

[0030] In the diagram: 1. Test chamber; 2. Control room; 3. Processing air duct; 4. Evaporator; 5. Heater; 6. Refrigeration unit; 7. Exhaust fan; 8. Air venting plate; 9. Test frame; 91. Base; 92. Vertical shaft; 921. Atomizing table; 93. Fixing frame; 931. Crank; 932. Rotating shaft; 95. Cylindrical cam; 950. Track groove; 951. Linkage mechanism; 952. Atomizing nozzle; 10. Air venting enclosure; 11. Test chamber; 12. Atomizer. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] Example: As shown in Figure 1, it includes a test chamber 1 formed by an outer insulation material. A processing air duct 3 is provided on one side of the test chamber 1. A heater 5 and an evaporator 4 are installed in the processing air duct 3. A refrigeration unit 6 is connected to one side of the evaporator 4.

[0033] The two ends of the processing air duct 3 are connected to the two sides of the test chamber 1 via the air venting plate 8. An exhaust fan 7 is installed inside the processing air duct 3. Referring to Figure 1, an atomizer 12 is installed on the air inlet side of the test chamber 1.

[0034] Two air-expelling enclosure plates 10 are installed in the middle of the test chamber 1, which are arranged in opposite directions. The air-expelling enclosure plates 10 enclose the test chamber 11. The air-expelling enclosure plates 10 are enclosure plate structures with honeycomb holes on the surface. Sealing plates are set at the front and rear ends of the test chamber 11 and connected to the air-expelling enclosure plates 10, so as to form a horizontal wind field in the test chamber 11 under the action of the induced draft fan 7.

[0035] Several test frames 9 are installed in the test chamber 11. Referring to Figure 2, each test frame 9 includes a vertical shaft 92 fixed to the ground of the test chamber 11. A cylindrical cam 95 is fixedly installed on the upper part of the vertical shaft 92. The outer edge of the cylindrical cam 95 is rotatably connected to a support frame 96. A fixing frame 93 for fixing the sample is installed on the support frame 96. A schematic diagram of the fixing frame 93 is shown in Figure 4. The fixing frame 93 itself is an open frame structure. The sample is a plate-shaped or sheet-like structure and can be connected to it by clamping, magnetic attraction, or bolt fixing. The purpose is to make the sample form a "blade" structure.

[0036] A crank 931 is fixedly mounted on one end of the fixed bracket 93, and a rotating shaft 932 is fixed on one end of the crank 931. One end of the rotating shaft 932 is embedded in the track groove 950 of the cylindrical cam 95.

[0037] Referring to Figures 2 and 4, the mounting bracket 93 has two installation methods. The first method is shown in Figure 2, where the track groove 950 has multiple sets of high and low intervals on the cylindrical cam 95, and multiple mounting brackets 93 are correspondingly installed. The second method is shown in Figures 5 and 6, where one set of track groove 950 is provided, and multiple mounting brackets 93 are provided. The crank 931 of one of the mounting brackets 93 is connected to the rotating shaft 932 through the linkage mechanism 951 to form a linkage. Referring to Figure 5, except for the first one, the other two cranks 931 are rotatably connected to the linkage mechanism 951.

[0038] Referring to Figure 3, the right side of Figure 3 shows a schematic diagram of the structure of a track groove 950. The track groove 950 consists of four sections, two of which are horizontal grooves distributed at different heights, and the other two are inclined grooves connecting the two horizontal grooves. When the rotating shaft 932 is in the higher horizontal groove, the sample remains vertical, and when the rotating shaft 932 is in the lower horizontal groove, the sample remains horizontal.

[0039] The test frame 9 is configured such that the windward side of the sample on the fixed frame 93 is driven by the horizontal wind field to rotate around the cylindrical cam 95. When it rotates to the other side, it rotates to the sidewind side under the action of the crank 931, the rotating shaft 932, and the cylindrical cam 95. This achieves the effect of the sample rotating around the cylindrical cam 95 in one direction under the action of the horizontal wind field. The sample rotates by the cylindrical cam 95 during rotation, thereby realizing the test of wind blowing conditions at different angles. In addition, the rotation can also be used as a reference item for vibration test. See Figure 8 for details. The arrows in the figure indicate the wind field direction. In order to ensure that the sample rotates in one direction, such as counterclockwise, the higher track groove is set in section A, the lower horizontal track groove is set in section C, and the other two inclined grooves are set in sections B and D.

[0040] Referring to Figure 6, when using the second mounting bracket as described above, since the cylindrical cam 95 is relatively small, it can be placed at the top, middle, or bottom. The remaining space can be reserved for installing the atomizing nozzle 952. The atomizing nozzle is installed here to supplement humidity. Since the whole structure is blade-like, centrifugal force will push some water vapor to the outside during rotation. Therefore, an additional set of atomizing nozzles 952 can be added on the inside to solve the problem of uneven humidity.

[0041] Additionally, referring to Figure 7, in another preferred embodiment, a set of atomizing stages 921 is fixedly installed on the vertical shaft 92. The atomizing stages 921 can also be used to supplement humid air or spray other liquids for simulated operating conditions, such as rain tests or acid etching tests. Referring to Figure 8, the atomizing stages 921 are installed in section D. Firstly, this section is located on the windward side; secondly, the sample is flipped in this section, allowing for a more uniform effect from the atomizing stages 921. Two atomizing stages 921 are provided, at an angle of 20°-45° to each other, and multiple sets of nozzles at different angles can be installed on their sides or top for use.

[0042] Finally, a base 91 is fixedly installed at the bottom of the vertical shaft 92. Both the vertical shaft 92 and the base 91 are connected to pipes, which are connected to the test chamber 11 via pre-embedded underground pipes for conveying materials to the atomizing stage 921 or the atomizing nozzle 952. This design helps to keep the test frame clean.

[0043] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high and low temperature humidity test chamber, characterized in that, The test chamber (1) is enclosed by an outer insulation material. A treatment air duct (3) is provided on one side of the test chamber (1). The two ends of the treatment air duct (3) are connected to the two sides of the test chamber (1) via air venting plates (8). An exhaust fan (7) is installed inside the treatment air duct (3). Two air venting plates (10) are installed in the middle of the test chamber (1) and are arranged in opposite directions. The air venting plates (10) enclose the test chamber (11). Sealing plates are provided at the front and rear ends of the test chamber (11) and are connected to the air venting plates (10) so that a horizontal wind field is formed in the test chamber (11) under the action of the exhaust fan (7). Several test racks (9) are installed in the test chamber (11). The test rack (9) includes a vertical shaft (92) fixed to the ground of the test chamber (11). A cylindrical cam (95) is fixedly installed on the upper part of the vertical shaft (92). The outer edge of the cylindrical cam (95) Rotary connection support frame (96), support frame (96) is equipped with a fixing frame (93) for fixing the sample, one end of the fixing frame (93) is fixedly mounted with a crank (931), one end of the crank (931) is fixed with a rotating shaft (932), one end of the rotating shaft (932) is embedded in the track groove (950) of the cylindrical cam (95); the test frame (9) is configured such that the windward side of the sample on the fixing frame (93) is driven by the horizontal wind field to rotate around the cylindrical cam (95), when it rotates to the other side, under the action of the crank (931), the rotating shaft (932) and the cylindrical cam (95), it rotates to the side wind side, so as to realize that under the action of the horizontal wind field, the sample rotates around the cylindrical cam (95) in one direction, and the sample rotates through the cylindrical cam (95) during rotation, thereby realizing the test of the wind blowing conditions at different angles.

2. The high and low temperature humidity test chamber according to claim 1, characterized in that, The track groove (950) of the cylindrical cam (95) includes four sections, two of which are horizontal grooves distributed at different heights, and the other two are inclined grooves connecting the two horizontal grooves. When the rotating shaft (932) is in the higher horizontal groove, the sample remains vertical, and when the rotating shaft (932) is in the lower horizontal groove, the sample remains horizontal.

3. A high and low temperature humidity test chamber according to claim 2, characterized in that, The track groove (950) is provided with multiple sets of high and low intervals on the cylindrical cam (95), and multiple fixing brackets (93) are provided accordingly.

4. A high and low temperature humidity test chamber according to claim 2, characterized in that, A set of track slots (950) is provided, and multiple fixed frames (93) are provided. The crank (931) outside one of the fixed frames (93) is provided with a rotating shaft (932). The cranks (931) of the other fixed frames (93) are connected to the rotating shaft (932) through the linkage mechanism (951) to form a linkage.

5. A high and low temperature humidity test chamber according to claim 4, characterized in that, An atomizing nozzle (952) is provided in the circumferential direction of the vertical shaft (92), and the atomizing nozzle (952) is located above or below the cylindrical cam (95).

6. A high and low temperature humidity test chamber according to claim 1, characterized in that, The support frame (96) is arranged in a ring around the cylindrical cam (95). The side of the support frame (96) is used to install the fixing frame (93). The fixing frame (93) is provided in four groups that are spaced apart from each other. Each group consists of several fixing frames (93) that are distributed vertically.

7. A high and low temperature humidity test chamber according to claim 1, characterized in that, An atomizing platform (921) is fixedly installed on the vertical shaft (92). The fixed surface of the atomizing platform (921) faces the windward side. The atomizing platform (921) can be used to release atomized solution, thereby enabling simulation testing under different working conditions.

8. A high and low temperature humidity test chamber according to claim 7, characterized in that, There are two atomizing platforms (921), and the two atomizing platforms (921) are at an angle of 20°-45° to each other. Several nozzles are provided on the side or top of the atomizing platform (921).

9. A high and low temperature humidity test chamber according to claim 8, characterized in that, The bottom of the vertical shaft (92) is fixedly provided with a base (91). Both the vertical shaft (92) and the base (91) are connected to pipelines, which are connected to the test chamber (11) through the pre-embedded underground pipelines, and are used to transport materials to the atomizing table (921).

10. A high and low temperature humidity test chamber according to claim 1, characterized in that, A heater (5) and an evaporator (4) are installed inside the air duct (3), and a refrigeration unit (6) is connected to one side of the evaporator (4).

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