CN221413127U - Large walk-in type high-low temperature alternating damp-heat test box - Google Patents

Abstract

The application discloses a large walk-in high-low temperature alternating damp-heat test box which comprises a test box, an insulation box, a heater, a humidifier and a refrigeration evaporator, wherein the test box is arranged in the insulation box, the insulation box and the test box are arranged at intervals, the heater, the humidifier and the refrigeration evaporator are all arranged on one side of the insulation box, one communicating pipe is communicated and connected with the heater, the humidifier and the refrigeration evaporator, one end of the communicating pipe, which is far away from the heater, the humidifier and the refrigeration evaporator, is communicated and connected with the insulation box, a pressure regulating valve is arranged on the communicating pipe, a circulating cavity is defined between the insulation box and the test box, a plurality of air outlet pipes are connected onto the inner wall of the test box, and an air outlet valve is arranged on the air outlet pipes, and one ends of the air outlet pipes are communicated and arranged with the circulating cavity. The application has the effect of improving the accuracy of the damp-heat test result.

Description

Large walk-in type high-low temperature alternating damp-heat test box

Technical Field

The application relates to the technical field of experimental equipment, in particular to a large walk-in high-low temperature alternating damp-heat test box.

Background

The high-low temperature alternating damp-heat test box is used for testing and determining parameter performance of electrician, motor and other products and materials after high temperature, low temperature, alternating damp-heat or constant test is carried out on temperature environment change, so that small household appliances used in daily life can be normally used in various severe environments. After the small household appliances are tested to be qualified, the small household appliances can be put into the market for use.

At present, chinese patent publication No. CN201543429U discloses a high-low temperature alternating damp-heat test box. The test box comprises a refrigerating system, a heating system, a humidifying system and an electric system, wherein the refrigerating system is arranged at the lower part in the test box, the humidifying system is arranged on the right side of the test box, the heating system is connected with the humidifying system, and the electric system is arranged on the inner face of the right side of the test box.

With respect to the related art described above, the inventors consider that for a larger test piece, it is necessary to detect the test piece using a larger alternating-humidity-heat test chamber. However, the large alternating damp-heat test chamber has large volume, the circulating wind direction is a straight port which is not adjustable, and the temperature and the humidity in the test chamber are easy to be uneven when the test is carried out, so that the accuracy of the test result can be influenced.

Disclosure of utility model

In order to improve the accuracy of a damp-heat test result, the application provides a large walk-in high-low temperature alternating damp-heat test box.

The application provides a large walk-in high-low temperature alternating damp-heat test box which adopts the following technical scheme:

The utility model provides a large-scale walk-in high low temperature alternation damp heat test box, includes test box, insulation can, heater, humidifier, refrigeration evaporimeter, the test box set up in the insulation can, the insulation can with be the interval setting between the test box, the heater the humidifier with the refrigeration evaporimeter all set up in one side of insulation can, all be connected with a communicating pipe on heater, humidifier and the refrigeration evaporimeter, keep away from communicating pipe heater, humidifier and refrigeration evaporimeter's one end with the insulation can intercommunication is connected, be provided with on the communicating pipe, the insulation can with enclose into the circulation chamber between the test box, be connected with a plurality of tuber pipes on the inner wall of test box, be provided with the air-out valve on the tuber pipe, the one end of tuber pipe with the circulation chamber intercommunication sets up, be provided with control panel on the insulation can, control panel with air-out valve electric connection.

Through adopting above-mentioned technical scheme, when carrying out the test, place the test piece in the test box, through a plurality of air-vent valves of control panel control, steam, cold wind or hot-blast are put into the circulation chamber through communicating pipe and are premixed. After the premixing is finished, a plurality of air outlet valves are controlled to be opened through a control panel, and air with certain temperature and humidity in the circulating cavity simultaneously enters the inner cavity of the test box from each position through a plurality of air outlet pipes, so that the uniformity of the temperature and humidity of each part in the test box is improved. Through the mutual cooperation of the test box, the incubator, the heater, the humidifier, the refrigeration evaporator, the air outlet pipe and the air outlet valve, the premixing of air is realized, and the effect of improving the accuracy of the damp-heat test result is achieved.

Optionally, be provided with mixing assembly on the insulation can, mixing assembly includes axis of rotation and mixed flabellum, the axis of rotation is in vertical rotation is connected with a plurality of on the bottom surface of insulation can, the one end of axis of rotation stretch into the inside of insulation can and with mix the flabellum and be connected, be provided with on the insulation can and be used for the drive axis of rotation pivoted first driving piece.

Through adopting above-mentioned technical scheme, when steam, cold wind or hot-blast entering circulation chamber, a plurality of axis of rotation rotations of first driving piece drive, connect in the epaxial mixed flabellum of axis of rotation and take place to rotate along with the axis of rotation to gas temperature and humidity in the circulation chamber carry out evenly, help improving the homogeneity of entering gas temperature and humidity in the test chamber.

Optionally, the both ends of test box length direction with incubator length direction's both ends are connected, the viewing aperture has been seted up to test box length direction's one end, the intercommunication mouth has been seted up to test box length direction's the other end, incubator length direction's one end is provided with the observation window, incubator length direction's the other end rotates and is connected with the chamber door, the chamber door with the position of intercommunication mouth corresponds the setting, the observation window with the position of viewing aperture corresponds the setting.

Through adopting above-mentioned technical scheme, the setting of observation window has made things convenient for operating personnel to carry out real-time observation to the test piece condition in the test box, and the setting of chamber door has made things convenient for operating personnel to shift out the test piece from the test box.

Optionally, the inside of test box is provided with bearing subassembly, bearing subassembly includes the bearing board and slides the strip, it is in to slide the strip all to be connected with one on the relative two vertical lateral walls of insulation can, slide the strip along the length direction setting of insulation can, two sides of bearing board width direction with two slide strip sliding connection, a plurality of intercommunicating pores have been seted up on the bearing board, the bearing board with the interval sets up between the interior bottom wall of test box, bearing board length direction's one end with the intercommunication mouth corresponds the setting, be provided with in the test box and be used for the drive the second driving piece that the bearing board removed.

By adopting the technical scheme, the test piece is placed on the bearing plate during detection. When the temperature in the test box is reduced rapidly, condensed water is easy to condense on the test piece and the bearing plate, and the condensed water drops to the bottom of the test box through a plurality of communication ports on the bearing plate. Because the bearing plate and the bottom wall of the test box leave a certain gap, the condensed water is separated from the test piece, and the possibility of uneven surface temperature caused by contact of the test piece and the condensed water is reduced.

Optionally, the top intercommunication of test box is connected with the isolation tube, the isolation tube runs through the insulation can and communicates with the external world, vertical division board that is connected with in the isolation tube, the division board will the isolation tube separates into closed chamber and intercommunication chamber, closed chamber stretches out the tip of insulation can is the closed setting, be provided with the actuating cylinder in the closed chamber, the jack-in groove has been seted up on the division board, sliding connection has the shutoff that is used for shutoff in the jack-in groove the division board in intercommunication chamber, the division board with the actuating cylinder transmission is connected.

Through adopting above-mentioned technical scheme, after accomplishing the detection to a test piece, take out the test piece from the test chamber through the chamber door. The driving cylinder is started to drive the partition plate to slide in the inserting groove, and low-temperature or high-temperature air in the inner cavity of the test box is discharged through the communicating cavity of the isolating pipe, so that the temperature of the test box is enabled to be quickly equal to that of the external environment, and the test box is ready for next detection.

Optionally, the bottom intercommunication of test box is connected with the drain pipe, the drain pipe runs through the insulation can and extends to outside, be provided with the drain valve on the drain pipe.

By adopting the technical scheme, when the temperature in the test box changes, condensed water is condensed on the bearing plate, flows to the bottom of the test box through the communication hole, and is discharged by opening the drain valve.

Optionally, a temperature sensor and a humidity sensor are arranged on the inner wall of the insulation can, the temperature sensor and the humidity sensor are all provided with a plurality of on the insulation can, and the temperature sensor and the humidity sensor are all electrically connected with the control panel.

Through adopting above-mentioned technical scheme, a plurality of temperature sensor and humidity transducer detect the temperature and the humidity of each position in the insulation can simultaneously to with data transmission to control panel, realized the real-time detection to humiture and degree of consistency.

Optionally, the second driving piece includes ejection of compact motor, drive gear and drive rack, drive rack connect in on the bearing board, drive rack's length direction with the strip parallel arrangement that slides, ejection of compact motor connect in on the inner wall of test chamber, drive gear with ejection of compact motor transmission is connected, drive gear with drive rack meshing is connected.

Through adopting above-mentioned technical scheme, ejection of compact motor starts and drives drive gear and rotate, and drive gear drives drive rack and spanners along the length direction of test box and removes, and the insulation can is shifted out through the intercommunication mouth to spanners' one end, has made things convenient for the ejection of compact to the test piece.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The air premixing device has the advantages that the air premixing is realized through the mutual matching of the test box, the insulation box, the heater, the humidifier, the refrigeration evaporator, the air outlet pipe and the air outlet valve, and the effect of improving the accuracy of a damp-heat test result is achieved;

2. The bearing plate reduces the possibility of uneven surface temperature caused by contact of the test piece with condensed water;

3. a plurality of temperature sensor and humidity transducer detect the temperature and the humidity of each position in the insulation can simultaneously to with data transmission to control panel, realized the real-time detection to humiture and degree of consistency thereof.

Drawings

FIG. 1 is a schematic diagram of a large walk-in high-low temperature alternating wet heat test chamber embodying an embodiment of the application.

Fig. 2 is a schematic diagram of a structure for embodying a door in an embodiment of the present application.

FIG. 3 is a partial cross-sectional view of an embodiment of the present application showing the internal structure of the test chamber and the incubator.

Fig. 4 is a schematic diagram of a structure for embodying a temperature sensor and a humidity sensor in an embodiment of the present application.

Fig. 5 is an enlarged view of a portion a in fig. 3.

Fig. 6 is an enlarged view of the portion B in fig. 3.

Reference numerals illustrate: 1. a test chamber; 101. an observation port; 102. a communication port; 2. an insulation box; 3. a bottom plate; 4. a mixing assembly; 41. a hybrid motor; 42. mixing fan blades; 43. a rotating shaft; 44. a drive sprocket; 45. a drive chain; 5. a support assembly; 51. a bearing plate; 52. a slip bar; 53. a discharging motor; 54. a drive gear; 55. a drive rack; 6. a heater; 7. a humidifier; 8. a refrigeration evaporator; 9. a control panel; 10. a support column; 11. a communicating pipe; 12. a pressure regulating valve; 13. a circulation chamber; 14. an observation window; 15. a door; 16. an air outlet pipe; 17. an air outlet valve; 18. a temperature sensor; 19. a humidity sensor; 20. an isolation tube; 201. closing the cavity; 202. a communication chamber; 203. a plug-in groove; 21. a partition plate; 22. a driving cylinder; 23. a mounting plate; 24. an exhaust fan; 25. a communication hole; 26. a drain pipe; 27. a drain valve; 28. a partition plate.

Detailed Description

The application is described in further detail below with reference to fig. 1-6. The embodiment of the application provides a large walk-in high-low temperature alternating damp-heat test box, which has the effect of improving the accuracy of a damp-heat test result.

Referring to fig. 1-3, a large walk-in high and low temperature alternating wet heat test chamber comprises a test chamber 1, an incubator 2, a base plate 3, a mixing assembly 4, a support assembly 5, a heater 6, a humidifier 7, and a refrigeration evaporator 8. The incubator 2, the heater 6, the humidifier 7 and the refrigeration evaporator 8 are fixedly connected to the top surface of the bottom plate 3, a plurality of support columns 10 are vertically fixedly connected to the bottom surface of the bottom plate 3, and a control panel 9 is arranged on the incubator 2.

Referring to fig. 1 and 3, a communicating pipe 11 is connected to each of the heater 6, the humidifier 7 and the refrigeration evaporator 8 in a communicating manner, one end, far away from the humidifier 7, the heater 6 and the refrigeration evaporator 8, of the communicating pipe 11 is connected to the vertical side wall of the incubator 2 in a communicating manner, each communicating pipe 11 is provided with a pressure regulating valve 12, and the pressure regulating valve 12 is electrically connected to the control panel 9. The test box 1 is arranged in the heat preservation box 2, the length direction of the test box 1 is parallel to the length direction of the heat preservation box 2, and the vertical outer walls at the two ends of the length direction of the test box 1 are in one-to-one correspondence with and fixedly connected with the vertical inner walls at the two ends of the length direction of the heat preservation box 2. A space is reserved between the test box 1 and the heat preservation box 2, and a circulating cavity 13 is formed by surrounding.

Referring to fig. 2 and 3, an observation port 101 is provided at one end of the test chamber 1 in the longitudinal direction, and a communication port 102 is provided at the other end of the test chamber 1 in the longitudinal direction. One end of the heat preservation box 2 in the length direction is provided with an observation window 14, the observation window 14 is double-layer hollow glass, the edge of the inner cavity of the observation window 14 is provided with an electric heating wire, and the observation window 14 is arranged corresponding to the observation port 101. The other end of the thermal insulation box 2 in the length direction is hinged with a box door 15, and the box door 15 is arranged corresponding to the communication port 102.

Referring to fig. 1 and 2, a plurality of air outlet pipes 16 are horizontally and fixedly connected to two opposite vertical inner walls of the test box 1, and the air outlet pipes 16 are arranged in a matrix on the vertical side walls of the test box 1. One end of the air outlet pipe 16 is communicated with the circulating cavity 13, and each air outlet pipe 16 is provided with an air outlet valve 17, and the air outlet valves 17 are electrically connected with the control panel 9.

Referring to fig. 3, the mixing assembly 4 is disposed on the incubator 2, and the mixing assembly 4 includes a mixing motor 41, a mixing fan blade 42, a rotating shaft 43, a driving sprocket 44, and a driving chain 45. The rotation axis 43 is connected with a plurality of on the diapire of insulation can 2 vertical rotation, and a plurality of rotation axes 43 are located on same straight line, and the top of every rotation axis 43 is connected with one in the mixture flabellum 42. One end of each rotating shaft 43 penetrates through the heat insulation box 2 and extends downwards, one driving sprocket 44 is fixedly sleeved at the bottom end of each rotating shaft 43, and a driving chain 45 is sleeved outside the driving sprockets 44. The hybrid motor 41 is connected to the base plate 3, and an output shaft of the hybrid motor 41 extends vertically upward and is in driving connection with one of the drive sprockets 44.

Referring to fig. 4, a temperature sensor 18 and a humidity sensor 19 are fixedly connected to the inner wall of the incubator 2, and a plurality of temperature sensors 18 and humidity sensors 19 are provided in the incubator 2.

Referring to fig. 3, 4 and 6, the top end of the test chamber 1 is connected with an isolation tube 20 in a communicating manner, and the isolation tube 20 penetrates through the insulation chamber 2 and is arranged in a communicating manner with the external environment. The isolation tube 20 is vertically and fixedly connected with an isolation plate 21, the isolation plate 21 is arranged between two opposite side walls of the isolation tube 20, the isolation plate 21 divides the isolation tube 20 into a closed cavity 201 and a communicating cavity 202, and the end part of the closed cavity 201 extending out of the heat insulation box 2 is in closed arrangement. The partition plate 21 is horizontally provided with a plugging slot 203, the plugging slot 203 is horizontally and movably connected with a partition plate 28, and when the partition plate 28 moves to a certain position, the partition plate 28 plugs the opening end of the communication cavity 202. A driving cylinder 22 is arranged in the closed cavity 201, the driving cylinder 22 is connected to the inner wall of the isolation tube 20, and an output shaft of the driving cylinder 22 horizontally extends and is fixedly connected with one side of the partition plate 28. The bottom of the isolation tube 20 is vertically and fixedly connected with a mounting plate 23, an exhaust fan 24 is fixedly connected to the mounting plate 23, and the air outlet end of the exhaust fan 24 is arranged towards the opening end of the communication cavity 202.

Referring to fig. 3 and 5, the support assembly 5 is disposed in the test chamber 1, and the support assembly 5 includes a support plate 51, a slip bar 52, an outfeed motor 53, a drive gear 54, and a drive rack 55. The supporting plate 51 is horizontally arranged in the inner cavity of the test chamber 1, and a plurality of communication holes 25 are formed in the supporting plate 51. Two opposite vertical side walls of the test box 1 are horizontally and fixedly connected with a sliding strip 52, and the sliding strip 52 is arranged along the length direction of the test box 1. The side edges of the two sides of the supporting plate 51 in the width direction are in one-to-one correspondence with the two sliding strips 52 and are in sliding connection, and one end of the supporting plate 51 in the length direction is arranged corresponding to the box door 15. The driving rack 55 is fixedly connected to the top surface of the supporting plate 51 along the length direction of the supporting plate 51, the discharging motor 53 is fixedly connected to the vertical inner wall of the test chamber 1, and the output shaft of the discharging motor 53 extends vertically downwards. The driving gear 54 is connected with the output shaft of the discharging motor 53, and the driving gear 54 is meshed with the driving rack 55. Referring to fig. 4, the bottom surface of the test chamber 1 is fixedly connected with a drain pipe 26, the drain pipe 26 penetrates through the insulation chamber 2 and extends to the lower side of the bottom plate 3, and a drain valve 27 is arranged on a pipe section of the drain pipe 26 located below the bottom plate 3.

Referring to fig. 1 and 3, when a test is performed, the door 15 is opened and a test piece is placed on the supporting plate 51, the door 15 is closed and the pressure regulating valves 12 are controlled by the control panel 9, and a certain amount of steam, cool air or hot air enters the circulation chamber 13 between the heat insulation box 2 and the test box 1 through the communicating pipe 11 to be premixed. The hybrid motor 41 is started and drives the rotating shaft 43 and the driving sprocket 44 connected with the hybrid motor to rotate, and the driving chain 45 drives the rest of the driving sprockets 44 and the rotating shaft 43 to rotate. The mixing fan blades 42 connected to the rotating shaft 43 rotate, so that the air circulation degree in the circulation cavity 13 is improved, the air in the circulation cavity 13 is mixed, and the uniformity of temperature and humidity in the circulation cavity 13 is improved. With reference to fig. 4, the temperature sensors 18 and the humidity sensors 19 in the incubator 2 detect the temperature and the humidity of each position in the incubator 2 at the same time, and transmit data to the control panel 9, so that an operator can conveniently and accurately monitor the uniformity of the temperature and the humidity in the incubator 2.

Referring to fig. 3 and 5, after the air in the circulation cavity 13 is uniformly mixed, a plurality of air outlet valves 17 are opened through the control panel 9, and the air in the circulation cavity 13 simultaneously enters all positions in the test box 1 through a plurality of air outlet pipes 16, so that the temperature and humidity uniformity in the test box 1 is improved. When the temperature in the test chamber 1 changes, the surface of the test piece and the support plate 51 is liable to condense condensed water, which flows to the bottom of the test chamber 1 through the plurality of communication holes 25 on the support plate 51, reducing the possibility that contact of a part of the test piece with the condensed water results in affecting the accuracy of the test result. Referring to fig. 4, when the test chamber 1 has more condensed water, the drain valve 27 is opened to drain the condensed water through the drain pipe 26. The operator observes the test piece condition in the test chamber 1 in real time through the observation window 14, and the setting of electric heater strip has reduced the possibility that the surface frost influences the observation owing to temperature variation observation window 14.

Referring to fig. 3 and 5, after the test piece is detected, the box door 15 is opened, the discharge motor 53 is started and drives the driving gear 54 to rotate, the driving rack 55 and the supporting plate 51 connected with the driving rack 55 are driven by the driving gear 54 to move, and the supporting plate 51 slides along the length direction of the sliding strip 52. One end of the carrier plate 51 is removed from the door 15 to facilitate the test piece discharge process.

Referring to fig. 6, when the test piece is detected, the driving cylinder 22 is started and drives the partition plate 28 to slide in the insertion groove 203, and the communication chamber 202 is provided in communication with the external environment. The exhaust fan 24 is started, and air in the test box 1 is discharged out of the inner cavity of the test box 1 through the isolation tube 20 under the negative pressure of the exhaust fan 24, so that the inner cavity of the test box 1 can be rapidly leveled with the temperature and humidity of the external environment, and the device can conveniently and rapidly perform the next test.

The embodiment of the application provides a large walk-in high-low temperature alternating damp-heat test box, which has the implementation principle that: when the test is performed, the box door 15 is opened, the test piece is placed on the supporting plate 51, a plurality of pressure regulating valves 12 are controlled, and a certain amount of steam, cold air or hot air enters the circulating cavity 13 for premixing. The mixing motor 41 rotates the mixing blades 42, thereby improving the air circulation degree in the circulation chamber 13. After the air in the circulation cavity 13 is uniformly mixed, a plurality of air outlet valves 17 are opened through the control panel 9, and the air in the circulation cavity 13 simultaneously enters all positions in the test box 1 through a plurality of air outlet pipes 16, so that the temperature and humidity uniformity in the test box 1 is improved.

After the test piece is detected, the box door 15 is opened, and one end of the supporting plate 51 is driven by the discharging motor 53 to move out of the box door 15, so that the discharging process of the test piece is facilitated. After the test piece is detected, the air cylinder 22 is driven to drive the partition plate 28 to slide, the exhaust fan 24 is started, and air in the test box 1 is discharged out of the inner cavity of the test box 1 through the isolation tube 20 under the negative pressure of the exhaust fan 24, so that the inner cavity of the test box 1 can be rapidly leveled with the temperature and humidity of the external environment.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (8)

1. A large-scale walk-in high-low temperature alternating damp-heat test box which is characterized in that: comprises a test box (1), an insulation box (2), a heater (6), a humidifier (7) and a refrigeration evaporator (8), wherein the test box (1) is arranged in the insulation box (2), the insulation box (2) and the test box (1) are arranged at intervals, the heater (6), the humidifier (7) and the refrigeration evaporator (8) are all arranged on one side of the insulation box (2), a communicating pipe (11) is communicated and connected on the heater (6), the humidifier (7) and the refrigeration evaporator (8), one end of the communicating pipe (11) is far away from the heater (6), one end of the humidifier (7) and one end of the refrigeration evaporator (8) are communicated and connected with the insulation box (2), a pressure regulating valve (12) is arranged on the communicating pipe (11), a circulating cavity (13) is defined between the insulation box (2) and the test box (1), a plurality of air outlet valves (16) are connected on the inner wall of the test box (1), one ends of the air outlet valves (16) are arranged on the air outlet valves (16) and the air outlet pipes (13) are communicated with the air outlet pipes (9), the control panel (9) is electrically connected with the air outlet valve (17).

2. The large walk-in high-low temperature alternating damp-heat test chamber according to claim 1, wherein: be provided with on insulation can (2) and mix subassembly (4), mix subassembly (4) including axis of rotation (43) and mixed flabellum (42), axis of rotation (43) are in vertical rotation is connected with a plurality of on the bottom surface of insulation can (2), the one end of axis of rotation (43) stretches into the inside of insulation can (2) and with mixed flabellum (42) are connected, be provided with on insulation can (2) and be used for the drive axis of rotation (43) pivoted first driving piece.

3. The large walk-in high-low temperature alternating damp-heat test chamber according to claim 2, wherein: the utility model discloses a thermal insulation box, including insulation box (1) and heat preservation box (2), test box (1) length direction's both ends with be connected at insulation box (2) length direction's both ends, viewing aperture (101) have been seted up to test box (1) length direction's one end, communication mouth (102) have been seted up to test box (1) length direction's the other end, insulation box (2) length direction's one end is provided with observation window (14), insulation box (2) length direction's the other end rotates and is connected with chamber door (15), chamber door (15) with the position of communication mouth (102) corresponds the setting, observation window (14) with the position of viewing aperture (101) corresponds the setting.

4. A large walk-in high and low temperature alternating damp heat test chamber according to claim 3, wherein: the inside of test box (1) is provided with bearing subassembly (5), bearing subassembly (5) include spandrel board (51) and slip strip (52), slip strip (52) are in all be connected with one on the two vertical lateral walls that insulation can (2) are relative, slip strip (52) are followed the length direction setting of insulation can (2), spandrel board (51) width direction two sides with two slip strip (52) sliding connection, a plurality of intercommunicating pore (25) have been seted up on spandrel board (51), spandrel board (51) with interval sets up between the interior bottom wall of test box (1), spandrel board (51) length direction's one end with intercommunication mouth (102) correspond the setting, be provided with in test box (1) and be used for the drive spandrel board (51) remove second driving piece.

5. The large walk-in high-low temperature alternating damp-heat test chamber according to claim 1, wherein: the top intercommunication of test box (1) is connected with isolation tube (20), isolation tube (20) run through insulation can (2) and with external intercommunication, vertical division board (21) that are connected with in isolation tube (20), division board (21) will sealed chamber (201) and intercommunication chamber (202) are separated into in isolation tube (20), sealed chamber (201) stretches out the tip of insulation can (2) is sealed the setting, be provided with actuating cylinder (22) in sealed chamber (201), jack-in groove (203) have been seted up on isolation board (21), sliding connection has division board (28) that are used for shutoff in jack-in groove (203) intercommunication chamber (202), division board (28) with actuating cylinder (22) transmission is connected.

6. The large walk-in high-low temperature alternating damp-heat test chamber according to claim 4, wherein: the bottom intercommunication of test box (1) is connected with drain pipe (26), drain pipe (26) run through insulation can (2) and extend to outside, be provided with drain valve (27) on drain pipe (26).

7. The large walk-in high-low temperature alternating damp-heat test chamber according to claim 2, wherein: the temperature sensor (18) and the humidity sensor (19) are arranged on the inner wall of the heat preservation box (2), the temperature sensor (18) and the humidity sensor (19) are all arranged on the heat preservation box (2), and the temperature sensor (18) and the humidity sensor (19) are all electrically connected with the control panel (9).

8. The large walk-in high-low temperature alternating damp-heat test chamber according to claim 4, wherein: the second driving piece comprises a discharging motor (53), a driving gear (54) and a driving rack (55), wherein the driving rack (55) is connected to the supporting plate (51), the driving rack (55) is arranged in parallel to the sliding strip (52) in the length direction, the discharging motor (53) is connected to the inner wall of the test box (1), the driving gear (54) is in transmission connection with the discharging motor (53), and the driving gear (54) is in meshed connection with the driving rack (55).