Rapid temperature change test box with automatic defrosting device

Abstract

The utility model relates to the technical field of temperature change test boxes, and discloses a rapid temperature change test box with an automatic defrosting device, which comprises a box body, the side surface of the box body is fixedly connected with an air bellow, the upper surface and the lower surface of the air bellow are fixedly connected with communicating pipes, and the inner wall of the air bellow is fixedly connected with a fan. According to the rapid temperature change test box with the automatic defrosting device, when the drying box is installed, the inclined plane of the inclined plane pipe is aligned with the air inlet pipe and the communicating pipe, the inclined plane of the inclined plane pipe is stressed, the inclined plane pipe pushes the spring to be compressed, and when the inclined plane pipe moves to the hollow positions of the air inlet pipe and the communicating pipe, the elastic force of the spring pushes the inclined plane pipe to be clamped in the air inlet pipe and the communicating pipe; the drying box can be fixed by rotating the threaded sleeve to be installed on the connecting pipe, when the drying box is taken down, the threaded sleeve is moved out, the drying box is rotated to adjust the inclined plane position of the inclined plane pipe, and the drying box can be taken out by pulling, so that the activated carbon plate is convenient to replace.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature change test boxes, and more specifically to a rapid temperature change test box with an automatic defrosting device. Background Art

[0002] Rapid temperature change test chamber is suitable for aerospace products, information electronic instruments, materials, electrical, electronic products, and various electronic components to test various performance indicators of products under rapid temperature changes.

[0003] In the test of the temperature change test chamber, the test material is often heated first and then quickly cooled for performance testing. In the rapid temperature change test chamber with automatic defrosting device (Announcement No. CN219150159U), an exhaust fan absorbs the air in the chamber and enters the air inlet pipe. The air is dried and dehumidified by the desiccant to remove moisture and prevent the moisture from condensing into frost. A heating wire is provided in the butt joint pipe at the air outlet to heat the air and make it drier. The dried air passes through the filter to filter the dust back into the chamber. This is repeated to speed up the air flow, remove moisture from the air and avoid frost.

[0004] In the above device, two docking rings are clamped on the surface of the air inlet pipe, and the position of the docking rings is fixed by bolts to fix the drying assembly. However, in actual use, since the air inlet pipe needs to overlap with the inner ring surface of the docking ring, the air inlet pipe needs to be inserted between the two docking rings. It is impossible to directly move the air inlet pipe horizontally between the two docking rings. In other words, the air inlet pipe needs to be moved up and down to ensure that the air inlet pipe is located between the two docking rings. Therefore, the air inlet pipe is a hose, but the hot air generated during the test chamber test will heat the air inlet pipe and may cause it to soften. Therefore, this installation method is inconvenient. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a rapid temperature change test box with an automatic defrosting device to solve the problems existing in the above-mentioned background technology.

[0006] The utility model provides the following technical solutions: a rapid temperature change test box with an automatic defrosting device, comprising a box body, a bellows is fixedly connected to the side of the box body, a connecting pipe is fixedly connected to the upper surface and the lower surface of the bellows, a fan is fixedly connected to the inner wall of the bellows, an air inlet pipe and an air outlet pipe are fixedly connected to the side of the box body close to the bellows, an air inlet end of the air outlet pipe is fixedly connected to the end face of the lower connecting pipe, a drying box is detachably installed between the upper connecting pipe and the air inlet pipe, and an activated carbon plate is fixedly connected to the interior of the drying box;

[0007] The upper surface and the lower surface of the drying box are both provided with mounting holes, the inner wall of the mounting hole is fixedly connected with a connecting pipe, the inner wall of the connecting pipe is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a square connecting ring, the square connecting ring and the opposite surface of the sliding groove are fixedly connected with a spring, the inner ring surface of the square connecting ring is fixedly connected with a bevel tube, the inner diameter size of the air inlet pipe and the connecting pipe is the same as the outer diameter size of the bevel tube, the surfaces of the air inlet pipe and the connecting pipe are both slidably connected with sliding rings, the surfaces of the sliding rings are fixedly connected with a threaded sleeve, the inner ring surface of the threaded sleeve is threadedly connected with the surface of the connecting pipe, the surfaces of the air inlet pipe and the connecting pipe are both fixedly connected with mounting rings, and a sealing ring is fixedly connected to the side of the mounting ring facing the sliding ring, and when the sliding ring is pressed against the sealing ring, the sealing during connection can be guaranteed.

[0008] The scheme is further that a box door is installed on the front side of the box body, and an observation window for observing the inside of the box body is installed on the front side of the box door, and the back side of the box door is fixedly connected with two fixed blocks, and the sides of the two fixed blocks are provided with rotating holes, and the inner walls of the rotating holes are rotatably connected with screw rods, and the surfaces of the screw rods are threadedly connected with moving bars, and a scraper is fixedly connected to the side of the moving bar facing the observation window, and the surface of the scraper overlaps the surface of the observation window, and the opposite surfaces of the two fixed blocks are fixedly connected with limiting rods, and the sides of the moving bars are provided with through holes, and the surface of the limiting rod overlaps the inner wall of the through hole. The front side of the box door is provided with a connecting hole, and the inner wall of the connecting hole is rotatably connected with a rotating shaft, and both ends of the rotating shaft are fixedly connected with a first bevel gear, and the end face of the screw rod is fixedly connected with a second bevel gear meshing with the surface of the first bevel gear, and the front side of the box door is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with a third bevel gear meshing with the surface of the first bevel gear, and the driving motor drives the screw rod to rotate, so that the scraper scrapes off the frost on the observation window to avoid frost blocking the observation.

[0009] A further solution is that the inner diameters of the air inlet pipe and the connecting pipe are the same as the outer diameter of the bevel pipe.

[0010] Technical effects and advantages of the utility model:

[0011] 1. The rapid temperature change test box with automatic defrosting device starts the fan, which transports the air in the box heating process to the drying box through the air inlet pipe. The activated carbon plate in the drying box can absorb moisture in the air and then dry the air. The dried air flows back to the box through the air outlet pipe, and then absorbs the water vapor generated in the box heating process to avoid frost in the air after rapid cooling. When installing the drying box, align the inclined surface of the inclined tube with the air inlet pipe and the connecting pipe. At this time, the inclined surface of the inclined tube is stressed, and the inclined tube pushes the spring to compress. When the inclined tube moves to the hollow part of the air inlet pipe and the connecting pipe, the elastic force of the spring pushes the inclined tube to be stuck in the air inlet pipe and the connecting pipe, thereby preliminarily fixing the drying box. After that, the threaded sleeve is rotated to be installed on the connecting pipe to fix the drying box. When removing the drying box, the threaded sleeve is moved out, and the drying box is rotated to adjust the inclined position of the inclined tube. The drying box can be taken out by pulling, thereby facilitating the replacement of the activated carbon plate.

[0012] 2. For the rapid temperature change test box with automatic defrosting device, when the drying effect of the activated carbon plate deteriorates and the test cannot be interrupted, frost will form on the surface of the observation window, and the driving motor will be driven. The driving motor drives the first bevel gear to rotate through the third bevel gear. At this time, under the drive of the first bevel gear, the second bevel gear drives the lead screw to rotate, and the moving bar drives the scraper to move to scrape off the frost on the observation window, thereby ensuring the observation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the box door of the utility model;

[0016] Figure 4 For this utility model Figure 3 The enlarged structural diagram at B in the middle;

[0017] Figure 5 This is a schematic diagram of the front cross-section structure of the drying box of the utility model;

[0018] Figure 6 For this utility model Figure 5 Enlarged structural diagram at point C in the middle.

[0019] The accompanying drawings are marked as: 1 box body, 2 bellows, 3 connecting pipe, 4 fan, 5 air inlet pipe, 6 air outlet pipe, 7 drying box, 8 activated carbon plate, 9 connecting pipe, 10 square connecting ring, 11 spring, 12 bevel pipe, 13 sliding ring, 14 threaded sleeve, 15 mounting ring, 16 third bevel gear, 17 sealing ring, 18 box door, 19 observation window, 20 fixed block, 21 screw rod, 22 moving bar, 23 scraper, 24 limit rod, 25 rotating shaft, 26 first bevel gear, 27 second bevel gear, 28 driving motor. DETAILED DESCRIPTION

[0020] A rapid temperature change test chamber with automatic defrosting device, refer to Figure 1-6 , comprising a box body 1, a bellows 2 is fixedly connected to the side of the box body 1, a connecting pipe 3 is fixedly connected to the upper and lower surfaces of the bellows 2, a fan 4 is fixedly connected to the inner wall of the bellows 2, an air inlet pipe 5 and 6 are fixedly connected to the side of the box body 1 close to the bellows 2, an air inlet end of the air outlet pipe 6 is fixedly connected to the end face of the lower connecting pipe 3, and a drying box 7 is detachably installed between the upper connecting pipe 3 and the air inlet pipe 5.

[0021] An activated carbon plate 8 is fixedly connected to the interior of the drying box 7. Mounting holes are provided on the upper and lower surfaces of the drying box 7. A connecting pipe 9 is fixedly connected to the inner wall of the mounting hole. A slide groove is provided on the inner wall of the connecting pipe 9. A square connecting ring 10 is slidably connected to the inner wall of the slide groove. A spring 11 is fixedly connected to the opposite surface of the square connecting ring 10 and the slide groove. A bevel tube 12 is fixedly connected to the inner ring surface of the square connecting ring 10. The inner diameter of the air inlet pipe 5 and the connecting pipe 3 is the same as the outer diameter of the bevel tube 12.

[0022] The surfaces of the air intake pipe 5 and the connecting pipe 3 are both slidably connected with a sliding ring 13, the surface of the sliding ring 13 is fixedly connected with a threaded sleeve 14, the inner ring surface of the threaded sleeve 14 is threadedly connected to the surface of the connecting pipe 9, the surfaces of the air intake pipe 5 and the connecting pipe 3 are both fixedly connected with a mounting ring 15, and the side of the mounting ring 15 facing the sliding ring 13 is fixedly connected with a sealing ring 17.

[0023] Start the fan 4, which conveys the air in the heating process of the box 1 to the drying box 7 through the air inlet pipe 5. The activated carbon plate 8 in the drying box 7 can absorb moisture in the air and dry the air. The dried air flows back to the box 1 through the air outlet pipe 6, and then absorbs the water vapor generated in the heating process of the box 1 to avoid frost on the moisture in the air after rapid cooling. When installing the drying box 7, align the inclined surface of the inclined tube 12 with the air inlet pipe 5 and the connecting pipe 3.

[0024] At this time, the inclined surface of the inclined tube 12 is stressed, and the inclined tube 12 pushes the spring 11 to compress. When the inclined tube 12 moves to the hollow part of the air intake pipe 5 and the connecting pipe 3, the elastic force of the spring 11 pushes the inclined tube 12 to be stuck in the air intake pipe 5 and the connecting pipe 3, thereby preliminarily fixing the drying box 7. After that, the threaded sleeve 14 is rotated to be installed on the connecting pipe 9 to fix the drying box 7. When removing the drying box 7, the threaded sleeve 14 is moved out, and the drying box 7 is rotated to adjust the inclined position of the inclined tube 12. The drying box 7 can be taken out by pulling it, thereby facilitating the replacement of the activated carbon plate 8.

[0025] A box door 18 is installed on the front of the box body 1, and an observation window 19 for observing the inside of the box body 1 is installed on the front of the box door 18. Two fixed blocks 20 are fixedly connected to the back of the box door 18. Rotation holes are opened on the sides of the two fixed blocks 20. The inner wall of the rotating hole is rotatably connected to a screw rod 21. A moving bar 22 is threadedly connected to the surface of the screw rod 21. A scraper 23 is fixedly connected to the side of the moving bar 22 facing the observation window 19, and the surface of the scraper 23 overlaps the surface of the observation window 19.

[0026] The opposite surfaces of the two fixed blocks 20 are fixedly connected with a limit rod 24, the side of the movable bar 22 is provided with a through hole, the surface of the limit rod 24 overlaps the inner wall of the through hole, the front of the box door 18 is provided with a connecting hole, the inner wall of the connecting hole is rotatably connected with a rotating shaft 25, both ends of the rotating shaft 25 are fixedly connected with a first bevel gear 26, the end face of the screw rod 21 is fixedly connected with a second bevel gear 27 meshing with the surface of the first bevel gear 26, the front of the box door 18 is fixedly connected with a drive motor 28, and the output end of the drive motor 28 is fixedly connected with a third bevel gear 16 meshing with the surface of the first bevel gear 26.

[0027] When the drying effect of the activated carbon plate 8 deteriorates and the test cannot be interrupted, frost will form on the surface of the observation window 19, driving the drive motor 28. The drive motor 28 drives the first bevel gear 26 to rotate through the third bevel gear 16. At this time, under the drive of the first bevel gear 26, the second bevel gear 27 drives the screw rod 21 to rotate, and the moving bar 22 drives the scraper 23 to move to scrape off the frost on the observation window 19, thereby ensuring the observation effect.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rapid temperature change test chamber with an automatic defrosting device, comprising a chamber (1), characterized in that: The side of the box body (1) is fixedly connected to a bellows (2), the upper surface and the lower surface of the bellows (2) are fixedly connected to a connecting pipe (3), the inner wall of the bellows (2) is fixedly connected to a fan (4), the side of the box body (1) close to the bellows (2) is respectively fixedly connected to an air inlet pipe (5) and an air outlet pipe (6), the air inlet end of the air outlet pipe (6) is fixedly connected to the end surface of the lower connecting pipe (3), a drying box (7) is detachably installed between the upper connecting pipe (3) and the air inlet pipe (5), and an activated carbon plate (8) is fixedly connected to the interior of the drying box (7); The upper and lower surfaces of the drying box (7) are provided with mounting holes, the inner wall of the mounting hole is fixedly connected to a connecting pipe (9), the inner wall of the connecting pipe (9) is provided with a sliding groove, the inner wall of the sliding groove is slidably connected to a square connecting ring (10), the square connecting ring (10) and the opposite surface of the sliding groove are fixedly connected to a spring (11), the inner ring surface of the square connecting ring (10) is fixedly connected to a bevel tube (12), the surfaces of the air intake pipe (5) and the connecting pipe (3) are slidably connected to a sliding ring (13), the surface of the sliding ring (13) is fixedly connected to a threaded sleeve (14), the inner ring surface of the threaded sleeve (14) is threadedly connected to the surface of the connecting pipe (9), the surfaces of the air intake pipe (5) and the connecting pipe (3) are fixedly connected to a mounting ring (15), and the side of the mounting ring (15) facing the sliding ring (13) is fixedly connected to a sealing ring (17).

2. A rapid temperature change test chamber with an automatic defrosting device according to claim 1, characterized in that: A box door (18) is installed on the front of the box body (1), and an observation window (19) for observing the interior of the box body (1) is installed on the front of the box door (18).

3. A rapid temperature change test chamber with an automatic defrosting device according to claim 2, characterized in that: Two fixing blocks (20) are fixedly connected to the back of the box door (18), and the sides of the two fixing blocks (20) are provided with rotation holes, and the inner walls of the rotation holes are rotatably connected to the screw rods (21).

4. A rapid temperature change test chamber with an automatic defrosting device according to claim 3, characterized in that: The surface of the screw rod (21) is threadedly connected to a moving bar (22), a surface of the moving bar (22) facing the observation window (19) is fixedly connected to a scraper (23), and the surface of the scraper (23) overlaps the surface of the observation window (19).

5. A rapid temperature change test chamber with an automatic defrosting device according to claim 4, characterized in that: The opposing surfaces of the two fixed blocks (20) are fixedly connected to a limiting rod (24), a through hole is provided on the side surface of the moving bar (22), and the surface of the limiting rod (24) overlaps the inner wall of the through hole.

6. A rapid temperature change test chamber with an automatic defrosting device according to claim 5, characterized in that: The front surface of the box door (18) is provided with a connection hole, the inner wall of the connection hole is rotatably connected to a rotating shaft (25), both ends of the rotating shaft (25) are fixedly connected to a first bevel gear (26), and the end surface of the screw rod (21) is fixedly connected to a second bevel gear (27) meshing with the surface of the first bevel gear (26).

7. A rapid temperature change test chamber with an automatic defrosting device according to claim 6, characterized in that: The front side of the box door (18) is fixedly connected to a driving motor (28), and the output end of the driving motor (28) is fixedly connected to a third bevel gear (16) meshing with the surface of the first bevel gear (26).

8. The rapid temperature change test chamber with automatic defrosting device according to claim 1, characterized in that: The inner diameters of the air intake pipe (5) and the connecting pipe (3) are the same as the outer diameter of the sloped pipe (12).

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