Constant temperature test chamber

Abstract

The present application relates to a constant temperature test box, which includes a box body and a bracket. The axial cross-sectional profile of the inner wall of the box body is circular, and the side wall of the box body is provided with a window capable of loading and unloading the test piece and a door body openably arranged at the window. The bracket is rotatably arranged inside the box body, and is provided with a plurality of support parts arranged in sequence around its rotation axis. During the packing operation of the test piece, by rotating each support part in sequence to a position relative to the window, and respectively passing each photovoltaic module through the window in sequence and correspondingly loading it into each support part of the bracket inside the box body, the packing operation of the test piece can be facilitated, and the packing efficiency is high; in addition, the inner wall of the box body has no corners, and there will be no turbulence at the corners to cause uneven temperature and humidity distribution of the test piece, and the water vapor and wind speed distribution in the box body are more uniform, which can improve the uniformity of humidity and temperature in different areas on the surface of each photovoltaic module, and the accuracy of the test results can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of test boxes, and in particular to a constant temperature test box. Background Art

[0002] The damp heat test (DH) is used to determine the ability of photovoltaic modules to withstand long-term moisture penetration. During the test, the photovoltaic modules are placed in a constant temperature test box and installed on the bracket inside the constant temperature test box. The test environment temperature of the constant temperature test box is usually controlled to, for example, (85±2)℃, the relative humidity is, for example, (85±5)%, and the test duration is, for example, (1000±48)h. After the photovoltaic modules are placed in the operating box, the constant temperature test box is closed and operated for a long time until the test is completed.

[0003] During the use of the constant temperature test box in the related art, water vapor is blown out from the top of the back of the constant temperature test box, and the water vapor flows from the top to the bottom of the box. The water vapor releases heat by liquefaction to control the temperature of the entire box. By controlling the steam volume of the water vapor in the box, the humidity and temperature in the box can be controlled. In addition, after the water vapor is liquefied, it gathers at the bottom of the constant temperature test box and becomes cooling water. After cooling, the water is recovered from the return air outlet at the bottom of the constant temperature test box.

[0004] However, the box of the constant temperature test box in the related art is usually set as a square box, and multiple photovoltaic modules are arranged in sequence from left to right inside the box. The gradient of the corners inside the square box is large, and eddy currents are very likely to occur, resulting in uneven pressure distribution inside the box, which in turn makes the humidity and temperature in different areas of the photovoltaic module surface extremely uneven, thus affecting the accuracy of the test results; in addition, when multiple photovoltaic modules are loaded into the square box, the staff needs to enter the box and move and adjust the positions of each photovoltaic module one by one inside the box so that each photovoltaic module is neatly arranged inside the box. It can be seen that the loading of photovoltaic modules is cumbersome and inefficient. Summary of the invention

[0005] Based on this, it is necessary to overcome the defects of the prior art and provide a constant temperature test box, which can improve the uniformity of humidity and temperature in different areas of the surface of photovoltaic modules, improve the accuracy of test results, and facilitate the packing action.

[0006] A constant temperature test box, comprising:

[0007] A box body, wherein the axial cross-sectional profile of the inner wall of the box body is circular, the side wall of the box body is provided with a window capable of loading and unloading the test piece and a door body openably arranged at the window, and the bottom of the box body is provided with an air outlet; and

[0008] The bracket is rotatably arranged inside the box, and the bracket is provided with a plurality of supporting parts which are arranged in sequence around its rotation axis and are used to support and fix the test piece, and each of the supporting parts can move to a position opposite to the window as the bracket rotates.

[0009] In one embodiment, the rotation axis of the bracket coincides with the central axis of the box; and all the support parts are arranged at equal intervals around the central axis of the box.

[0010] In one embodiment, the bracket is further provided with a rotating shaft rotatably connected to the box body; the bottom end of the rotating shaft is rotatably connected to the bottom wall of the box body, and / or the top end of the rotating shaft is rotatably connected to the top wall of the box body.

[0011] In one embodiment, the bracket includes a limiting assembly mounted on the rotating shaft, and the limiting assembly includes a plurality of limiting rods sequentially arranged and radially distributed around the circumference of the rotating shaft, and the spacing area between any two adjacent limiting rods is used to insert and limit one of the test pieces.

[0012] In one embodiment, the bracket includes a base fixedly mounted on the rotating shaft, all the supporting parts are formed on the base and arranged in sequence around the circumference of the rotating shaft; the base also includes a first annular connecting part, which is respectively connected to all the supporting parts; and / or, each of the supporting parts is provided with one or more clamping components, and the clamping components are used to clamp and fix the test piece.

[0013] In one embodiment, the bracket further includes a reinforcing frame fixedly mounted on the rotating shaft and a plurality of reinforcing rods respectively connecting the reinforcing frame and the base bracket.

[0014] In one of the embodiments, the constant temperature test box further comprises a guide bar in a circular shape and arranged on the top of the box body, wherein the guide bar is connected to the inner wall of the box body and is located above the bracket.

[0015] In one of the embodiments, the constant temperature test box further includes a first guide plate disposed inside the box body and above the bracket, and a plurality of evenly arranged first guide holes are formed on the first guide plate.

[0016] In one of the embodiments, the constant temperature test box further includes a second guide plate disposed inside the box body and below the bracket, and a plurality of evenly arranged second guide holes are formed on the second guide plate.

[0017] In one embodiment, the constant temperature test box also includes a support member arranged inside the box body, the support member is placed on the bottom wall of the box body, and the second guide plate is installed on the support member; the support member is arranged circumferentially around the second guide plate, and a plurality of notches are formed on the support member and are arranged in sequence around the circumference of the second guide plate.

[0018] The above-mentioned constant temperature test box has a rotatable bracket inside the box body, and each support part on the bracket can be rotated to a position opposite to the window. In this way, when the test piece is packed, by making each support part rotate to a position opposite to the window in turn, and each photovoltaic module is sequentially loaded into the corresponding support part of the bracket inside the box body through the window, there is no need for the staff to enter the box body to carry out the packing operation of the test piece as in the related art, which can be more convenient for the packing operation of the test piece and has a higher packing efficiency. In addition, since the axial cross-sectional profile of the inner wall of the box body is circular, in other words, the box body is arranged in a cylindrical shape, and compared with a square box body, the cylindrical shape has no corners. In this way, when water vapor is passed downward from the top of the box body, there will be no turbulence at the corners to cause uneven temperature and humidity distribution of the test piece, and the water vapor and wind speed distribution in the box body will be more uniform, which can improve the uniformity of humidity and temperature in different areas on the surface of each photovoltaic module, better comply with the IEC61215 test standard, and improve the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a constant temperature test box according to an embodiment of the present application.

[0020] Figure 2 for Figure 1 A breakdown structure diagram of the structure shown.

[0021] Figure 3 for Figure 1 The structure diagram after removing the top wall and bottom wall in the shown structure.

[0022] Figure 4 for Figure 3 The structure diagram after removing the side wall in the shown structure.

[0023] Figure 5 for Figure 4 The structure shown is a structural diagram without the door body, guide strips and some parts to be tested.

[0024] Figure 6 for Figure 5 The structural diagram shows a structure in which some reinforcement rods are removed.

[0025] Figure 7 for Figure 6 The structure shown is a diagram in which the reinforcing rod is removed and the part to be tested is disassembled.

[0026] Figure 8 for Figure 7 Structural diagram of the limit assembly in the structure shown.

[0027] Fig. 9 This is a structural diagram of a first guide plate according to an embodiment of the present application.

[0028] Fig.10 This is a structural diagram of a second guide plate according to an embodiment of the present application.

[0029] 10. Box body; 11. Side wall; 111. Window; 112. Door body; 12. Air outlet; 13. Bottom wall; 14. Top wall; 20. Bracket; 21. Rotating axis; 22. Clamping assembly; 221. Clamping block; 23. Limiting assembly; 231. Limiting rod; 232. Fixing sleeve; 24. Bottom bracket; 241. Support part; 242. First connecting part; 243. First vent; 25. Reinforcement frame; 251. Second vent; 26. Reinforcement rod; 261. First reinforcement rod; 262. Second reinforcement rod; 30. Measured piece; 40. Guide strip; 50. First guide plate; 51. First guide hole; 60. Second guide plate; 61. Second guide hole; 70. Support member; 71. Notch. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] See also Figures 1 to 5 , Figure 1 A structural diagram of a constant temperature test box according to an embodiment of the present application is shown. Figure 2 Shows Figure 1 A breakdown structure diagram of the structure shown. Figure 3 Shows Figure 1 The structure diagram after removing the top wall and bottom wall in the shown structure. Figure 4 Shows Figure 3 The structure diagram after removing the side wall in the shown structure. Figure 5 Shows Figure 4The structure shown is a structural diagram without the door body, guide strips and part of the test piece. A constant temperature test box is provided in one embodiment of the present application, and the constant temperature test box includes a box body 10 and a bracket 20. The axial cross-sectional profile of the inner wall of the box body 10 is circular, and the side wall 11 of the box body 10 is provided with a window 111 capable of loading and unloading the test piece 30 and a door body 112 openably arranged at the window 111, and the bottom of the box body 10 is provided with an air outlet 12. The bracket 20 is rotatably arranged inside the box body 10, and the bracket 20 is provided with a plurality of support portions 241 arranged in sequence around its rotation axis and used to support and fix the test piece 30, and each support portion 241 can move to a position opposite to the window 111 as the bracket 20 rotates.

[0032] In some embodiments, the device under test 30 includes but is not limited to a photovoltaic module.

[0033] In the above-mentioned constant temperature test box, since a rotatable bracket 20 is provided inside the box body 10, each support portion 241 on the bracket 20 can be rotated to a position opposite to the window 111. In this way, when the test piece 30 is packed, by rotating each support portion 241 to a position opposite to the window 111 in turn, and each photovoltaic module is sequentially loaded into each support portion 241 of the bracket 20 inside the box body 10 through the window 111, it is unnecessary for the staff to enter the box body 10 to carry out the packing operation of the test piece 30 as in the related art, which can be more convenient for the test piece 30 to be packed. The packing operation of the test piece 30 has a high packing efficiency. In addition, since the axial cross-sectional profile of the inner wall of the box body 10 is circular, in other words, the box body 10 is arranged in a cylindrical shape. Compared with the square box body 10, the cylindrical shape has no corners. In this way, when water vapor flows downward from the top of the box body 10, there will be no turbulence at the corners, resulting in uneven temperature and humidity distribution of the test piece 30. The water vapor and wind speed distribution in the box body 10 are more uniform, which can improve the uniformity of humidity and temperature in different areas on the surface of each photovoltaic module, is more in line with the IEC61215 test standard, and the accuracy of the test results is improved.

[0034] In some embodiments, the support portions 241 are arranged at equal intervals around the central axis of the box body 10, so that the test pieces 30 occupy the same area and are symmetrically distributed, which can further improve the uniformity of humidity and temperature in different areas on the surface of each photovoltaic module, better comply with the IEC61215 test standard, and improve the accuracy of the test results.

[0035] Specifically, during the packing operation of the test piece 30, after the test piece 30 is loaded onto one of the support parts 241, the bracket 20 is driven to rotate, so that the next support part 241 rotates to a position opposite to the window 111, and the next test piece 30 is loaded onto the support part 241 through the window 111. This installation method is repeated until each support part 241 on the bracket 20 is respectively installed with the test piece 30. After each support part 241 of the bracket 20 is respectively installed with the test piece 30, the door body 112 is closed to perform the test work of the test piece 30.

[0036] In some embodiments, the bracket 20 is rotatably arranged inside the box 10, and the opening size of the window 111 does not need to be too large, as long as it is sufficient to pass the test piece 30 and allow the test piece 30 to enter the box 10. In addition, the operator can perform the box packing operation outside the box 10 and implement the fixed-point installation of the test piece 30, without the operator entering the box 10 and lifting the test piece 30 into the box as in the related art, that is, the operator's work process is reduced accordingly, and the efficiency is improved simultaneously; in addition, since the operator does not need to enter the box for operation, it can avoid bringing flying dust and other debris into the box 10, thereby improving the experimental accuracy.

[0037] See also Figures 1 to 5 In one embodiment, the bracket 20 is further provided with a rotating shaft 21 rotatably connected to the box body 10. Specifically, the bottom end of the rotating shaft 21 is rotatably connected to the bottom wall 13 of the box body 10, and / or the top end of the rotating shaft 21 is rotatably connected to the top wall 14 of the box body 10. In this way, the bracket 20 can be rotatably installed inside the box body 10. When the opposite ends of the rotating shaft 21 are rotatably connected to the bottom wall 13 and the top wall 14 of the box body 10, respectively, the bracket 20 can be stably rotated inside the box body 10.

[0038] See also Figures 1 to 5 In some embodiments, the rotating shaft 21 is coaxially arranged with the box 10, in other words, the rotation axis of the bracket 20 coincides with the central axis of the box 10. All the support parts 241 are arranged at equal intervals around the central axis of the box 10, so that each of the test pieces 30 is arranged at equal intervals around the rotating shaft 21, that is, arranged at equal intervals around the central axis of the box 10, so that each of the test pieces 30 occupies the same area and is symmetrically and evenly distributed, which can further improve the uniformity of steam received by each photovoltaic module, and the temperature and humidity control will be more uniform, more in line with the IEC61215 test standard, and the accuracy of the test results can be improved.

[0039] In some embodiments, bearings are provided at the connection parts between the bottom and top ends of the rotating shaft 21 and the housing 10 , respectively. With the help of the bearings, the rotation of the rotating shaft 21 is more stable and reliable, and the service life of the rotating shaft 21 can be improved.

[0040] In order to stably mount the test piece 30 on the bracket 20, the bracket 20 includes but is not limited to a clamping assembly 22 and / or a position limiting assembly 23. Thus, after the test piece 30 is loaded on the support portion 241, the clamping assembly 22 can clamp the test piece 30, and the position limiting assembly 23 can be used to limit the position of the position limiting member, so that the test piece 30 is stably mounted on the bracket 20.

[0041] See also Figures 5 to 8 In one embodiment, the bracket 20 includes a limiting assembly 23 mounted on the rotating shaft 21. The limiting assembly 23 includes a plurality of limiting rods 231 sequentially arranged and radially distributed around the circumference of the rotating shaft 21, and the interval area between any two adjacent limiting rods 231 is used to insert and limit a piece to be tested 30.

[0042] In some embodiments, the limiting assembly 23 can be set to one or multiple and arranged in sequence along the axial direction of the rotating shaft 21. When the limiting assembly 23 is set to multiple, the limiting rods 231 of all the limiting assemblies 23 correspond in position along the axial direction of the rotating shaft 21. In other words, the projections of the limiting rods 231 of all the limiting assemblies 23 along the axial direction of the rotating shaft 21 completely overlap. In this way, a piece to be tested 30 can be synchronously inserted into the interval area between two adjacent limiting rods 231 of each limiting assembly 23, so that the piece to be tested 30 is stably limited.

[0043] In some embodiments, the limiting assembly 23 further includes a fixing sleeve 232 that is sleeved and fixed on the rotating shaft 21. One end of each limiting rod 231 is connected and fixed to the fixing sleeve 232, and the other end extends in a direction away from the fixing sleeve 232 and is a free end. In this way, the fixing sleeve 232 can combine the limiting rods 231 together to form a whole, which can facilitate the disassembly and assembly operation of the limiting assembly 23 on the rotating shaft 21.

[0044] See also Figures 5 to 8 In one embodiment, the bracket 20 includes a base 24 fixedly mounted on the rotating shaft 21. All the supporting parts 241 are formed on the base 24 and are arranged in sequence around the circumference of the rotating shaft 21. The base 24 also includes a first connecting part 242 in an annular shape, and the first connecting part 242 is respectively connected to all the supporting parts 241. In this way, the first connecting part 242 can increase the structural strength of the base 24, thereby improving the support stability of the test piece 30.

[0045] In some embodiments, the first connection portion 242 and the support portion 241 are staggered to form first vent holes 243, and each first vent hole 243 is evenly arranged on the bottom bracket 24. In this way, the bottom bracket 24 can also play a role in uniformly flowing water vapor. When the water vapor flows from top to bottom, it will be distributed more evenly, thereby improving the uniformity of humidity and temperature in different areas on the surface of each photovoltaic module.

[0046] See also Figures 6 to 8 In addition, one or more clamping components 22 are disposed on each support portion 241, and the clamping components 22 are used to clamp and fix the test piece 30. In this way, the clamping components 22 can clamp and fix the test piece 30, and can improve the stability of the test piece 30 on the base 24.

[0047] In some embodiments, the clamping assembly 22 includes two clamping blocks 221 disposed on the support portion 241 and spaced apart from each other. When the test piece 30 is pushed onto the support portion 241, the test piece 30 can be synchronously passed through and inserted into the space between the two clamping blocks 221, and the two clamping blocks 221 can stably clamp the test piece 30 accordingly.

[0048] In one embodiment, the bracket 20 further includes a reinforcing frame 25 fixedly mounted on the rotating shaft 21 and a plurality of reinforcing rods 26 respectively connecting the reinforcing frame 25 and the bottom bracket 24. Thus, since the bottom bracket 24 is connected to the reinforcing frame 25 through the reinforcing rods 26, the bottom bracket 24 and the reinforcing frame 25 are also connected to the rotating shaft 21, thereby increasing the overall structural strength of the bracket 20 to stably support the test piece 30.

[0049] In some embodiments, all the reinforcing rods 26 are evenly spaced around the circumference of the rotating shaft 21, which not only improves the overall structural strength of the bracket 20, but also makes the distribution of water vapor more uniform. Specifically, the reinforcing rods 26 include a first reinforcing rod 261 and a second reinforcing rod 262. The distance between the first reinforcing rod 261 and the rotating shaft 21 is smaller than the distance between the second reinforcing rod 262 and the rotating shaft 21. All the first reinforcing rods 261 are combined to form an inner ring reinforcement structure, and all the second reinforcing rods 262 are combined to form an outer ring reinforcement structure. In addition, the number of the first reinforcing rods 261 is the same as the number of the second reinforcing rods 262, and each first reinforcing rod 261 and each second reinforcing rod 262 are arranged in a corresponding position.

[0050] In some embodiments, a plurality of second vents 251 are formed on the reinforcing frame 25, and all the second vents 251 are evenly arranged on the reinforcing frame 25. The reinforcing frame 25 not only increases the structural strength of the bracket 20, but also plays a role in uniformly flowing water vapor. Specifically, when water vapor flows from top to bottom, it can pass through the reinforcing frame 25 and evenly contact each of the test pieces 30, and the humidity and temperature of different areas on the surface of each of the test pieces 30 are relatively uniform.

[0051] In the related art, the water vapor outlet is set on one side of the top of the box 10, and the return air outlet is arranged on one side of the bottom of the box 10. In this way, the water vapor follows a single route when flowing from the outlet to the return air outlet, and is unevenly distributed inside the box 10, resulting in extremely uneven humidity and temperature in different areas on the surface of the photovoltaic module.

[0052] See also Figures 2 to 4 In one embodiment, the constant temperature test box further includes a guide bar 40 in a circular shape and disposed on the top of the box body 10. The guide bar 40 is connected to the inner wall of the box body 10 and is located above the bracket 20. In this way, when water vapor flows downward from the top of the box body 10, the guide bar 40 guides the water vapor, which can help the water vapor to be distributed relatively more evenly in the box body 10.

[0053] See also Figures 2 to 4 and Fig. 9 In one embodiment, the constant temperature test box further includes a first guide plate 50 disposed inside the box body 10 and above the bracket 20. The first guide plate 50 is formed with a plurality of evenly arranged first guide holes 51. In this way, when water vapor flows downward from the top of the box body 10, it will flow downward through each of the first guide holes 51, and since the first guide holes 51 are evenly arranged, the distribution of water vapor can be more even.

[0054] In some embodiments, the first guide holes 51 include but are not limited to regular shapes such as square holes, fan-shaped holes, trapezoidal holes, circular holes, and other irregular shapes.

[0055] The first guide plate 50 is also specifically arranged, for example, below the guide bar 40. In this way, after the guide bar 40 preliminarily guides the water vapor, the first guide plate 50 further guides the water vapor, so that the water vapor can be evenly distributed in the box 10.

[0056] In some embodiments, the first guide plate 50 can be fixedly mounted on the rotating shaft 21 or on the inner wall of the box body 10, and can be specifically set according to actual needs. In this embodiment, the first guide plate 50 is specifically, for example, mounted on the rotating shaft 21, so that the first guide plate 50 can be integrally installed into the box body 10 or taken out from the box body 10 with the bracket 20, which is convenient for assembly operation.

[0057] See also Figures 2 to 4 and Fig.10In one embodiment, the constant temperature test box further includes a second guide plate 60 disposed inside the box body 10 and below the bracket 20. Specifically, a plurality of evenly arranged second guide holes 61 are formed on the second guide plate 60. In this way, when water vapor flows downward from the top of the box body 10, it will continue to flow downward through each of the second guide holes 61 after flowing through the bracket 20, and since the second guide holes 61 are evenly arranged, the distribution of water vapor in the box body 10 can be made more even.

[0058] In some embodiments, similar to the arrangement of the first guide holes 51, the second guide holes 61 include but are not limited to regular shapes such as square holes, fan-shaped holes, trapezoidal holes, circular holes, and other irregular shapes. The number and shape of the second guide holes 61 and the first guide holes 51 can be consistent or different, which is not limited here and can be flexibly adjusted and arranged according to actual needs.

[0059] In some embodiments, the second guide plate 60 can be connected to the inner wall of the box body 10 and thus fixed inside the box body 10; it can also be connected to the bracket 20 and fixedly installed on the bottom of the bracket 20; or a support member 70 can be placed inside the box body 10, and the support member 70 is located below the bracket 20 and is supported and fixed by the bottom wall 13 of the box body 10, and the second guide plate 60 is installed on the support member 70. This can facilitate the installation of the second guide plate 60 inside the box body 10, and also facilitate the removal of the second guide plate 60.

[0060] See also Figures 2 to 4 and Fig.10 In a specific embodiment, the constant temperature test box further includes a support member 70 disposed inside the box body 10, the support member 70 is placed on the bottom wall 13 of the box body 10, and the second guide plate 60 is mounted on the support member 70. Specifically, the support member 70 is arranged around the circumference of the second guide plate 60, and a plurality of notches 71 are formed on the support member 70 and are arranged in sequence around the circumference of the second guide plate 60. In this way, on the one hand, the support member 70 supports the second guide plate 60, so that the second guide plate 60 is stably mounted inside the box body 10; on the other hand, the condensed water generated inside the box body 10 can flow out through the notch 71 and the air outlet 12.

[0061] Specifically, all the notches 71 are arranged at equal intervals on the support member 70, which can make the distribution of water vapor in the box body 10 more uniform. In addition, the support member 70 is configured as an annular plate, and the notches 71 extend to the bottom edge of the annular plate, so that the condensed water on the bottom wall 13 of the box body 10 can pass through the notches 71 and be discharged smoothly to the outside.

[0062] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does 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 application.

[0063] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0064] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0065] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A constant temperature test box, characterized in that: The constant temperature test box comprises: A box body (10), wherein the axial cross-sectional profile of the inner wall of the box body (10) is circular, the side wall (11) of the box body (10) is provided with a window (111) capable of loading and unloading the test piece (30) and a door body (112) openably arranged at the window (111), and the bottom of the box body (10) is provided with an air outlet (12); and A bracket (20), the bracket (20) being rotatably arranged inside the box (10), the bracket (20) being provided with a plurality of supporting parts (241) arranged in sequence around its rotation axis and used for supporting and fixing the test piece (30), each of the supporting parts (241) being able to move to a position opposite to the window (111) as the bracket (20) rotates.

2. The constant temperature test box according to claim 1, characterized in that: The rotation axis of the bracket (20) coincides with the central axis of the box body (10); and all the support parts (241) are arranged at equal intervals around the central axis of the box body (10).

3. The constant temperature test box according to claim 1, characterized in that: The bracket (20) is also provided with a rotating shaft (21) rotatably connected to the box body (10); the bottom end of the rotating shaft (21) is rotatably connected to the bottom wall (13) of the box body (10), and / or the top end of the rotating shaft (21) is rotatably connected to the top wall (14) of the box body (10).

4. The constant temperature test box according to claim 3, characterized in that: The bracket (20) comprises a limiting assembly (23) mounted on the rotating shaft (21), the limiting assembly (23) comprising a plurality of limiting rods (231) sequentially arranged and radially distributed around the circumference of the rotating shaft (21), and the spacing area between any two adjacent limiting rods (231) is used to insert and limit one of the test pieces (30).

5. The constant temperature test box according to claim 3, characterized in that: The bracket (20) comprises a base (24) fixedly mounted on the rotating shaft (21), and all the supporting parts (241) are formed on the base (24) and arranged in sequence around the circumference of the rotating shaft (21); the base (24) also comprises a first connecting part (242) in an annular shape, and the first connecting part (242) is respectively connected to all the supporting parts (241); and / or, each of the supporting parts (241) is provided with one or more clamping components (22), and the clamping components (22) are used to clamp and fix the test piece (30).

6. The constant temperature test box according to claim 5, characterized in that: The bracket (20) further comprises a reinforcing frame (25) fixedly mounted on the rotating shaft (21) and a plurality of reinforcing rods (26) respectively connecting the reinforcing frame (25) and the bottom bracket (24).

7. The constant temperature test box according to claim 1, characterized in that: The constant temperature test box further comprises a guide bar (40) which is arranged on the top of the box body (10) and is in the shape of a circular ring. The guide bar (40) is connected to the inner wall of the box body (10) and is located above the bracket (20).

8. The constant temperature test box according to claim 1, characterized in that: The constant temperature test box further comprises a first guide plate (50) arranged inside the box body (10) and located above the bracket (20), and a plurality of evenly arranged first guide holes (51) are formed on the first guide plate (50).

9. The constant temperature test box according to claim 1, characterized in that: The constant temperature test box further comprises a second guide plate (60) arranged inside the box body (10) and below the bracket (20), and a plurality of evenly arranged second guide holes (61) are formed on the second guide plate (60).

10. The constant temperature test box according to claim 9, characterized in that: The constant temperature test box also includes a support member (70) arranged inside the box body (10), the support member (70) is placed on the bottom wall (13) of the box body (10), and the second guide plate (60) is installed on the support member (70); the support member (70) is arranged around the circumference of the second guide plate (60), and a plurality of notches (71) are formed on the support member (70) and are arranged in sequence and spaced apart around the circumference of the second guide plate (60).

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