Ventilation device of high and low temperature test box

Abstract

The utility model discloses a ventilation device of a high and low temperature test chamber, which comprises a box body and a box cover, an inner box is fixedly connected in the box body, the upper side of the inner box is provided with a first groove, the inner box is positioned in the first groove and is fixedly connected with a bracket, the bracket is rotatably connected with a first fan, the box body is fixedly connected with a first motor, and the first motor is fixedly connected with a second motor. A first groove is formed in the box body, a first motor is arranged between the box body and the inner box, a rotating block is fixedly connected to the output end of the first motor, a guide groove is formed in the side, close to the first groove, of the rotating block, heating pipes are evenly and fixedly connected to one side in the box body, and the positions of the heating pipes are staggered. Under the assistance of the heating pipe and the evaporation pipe, the air flow can be heated and cooled, meanwhile, the air pump is used for extracting air, so that the air in the inner box is rapidly exhausted, the air exchange efficiency can be improved, meanwhile, heat generated by the condenser is guided into one side of the heating pipe in the box body, the air heating speed can be high, and the air exchange energy consumption can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of high and low temperature test boxes, in particular to a ventilation device for a high and low temperature test box. Background Art

[0002] A high and low temperature test chamber is a device used to test the performance of materials under various temperature conditions. It is usually composed of a temperature control system, a heating system, a refrigeration system, and a ventilation system. It can complete both high and low temperature tests at one time. It can also perform fixed temperatures, making the experimental results closer to the natural climate. In order to improve the test performance of sensitive or high-precision products, the high and low temperature test chamber requires ventilation during the test process.

[0003] When the high and low temperature test chamber is exchanging gas inside and outside the chamber, the ventilation needs to be changed by manual or mechanical rotation to change the gas convection area of ​​the slot. The efficiency is low during the ventilation process, which increases energy consumption.

[0004] According to the "Ventilation Device for a High and Low Temperature Test Chamber" with Chinese patent announcement number CN219209984U, it mainly describes that a slot is opened to allow gas to circulate through the slot, and the gas enters the annular shell from the slot and then enters the high and low temperature test chamber, so that the gas circulation is more uniform during the ventilation process. By installing multiple baffles, the baffles are used to open and close the slots, and the ventilation process can be adjusted at will. When ventilation is needed, the baffles are opened, and the high and low temperature test chamber closes the slots during operation. Knurling is provided on the rotating shaft, and the rotating shaft may rotate without external force, making it difficult to control the closing and opening of the baffle. The knurling is provided to generate friction so that the rotating shaft and the annular shell maintain their original state without external force. In this process, the temperature in the high and low temperature test chamber is adjusted by manually turning the knob, which makes the operation more troublesome and increases energy consumption.

[0005] Therefore, a ventilation device for a high and low temperature test chamber is proposed to solve the problem that the temperature in the high and low temperature test chamber is adjusted by manually turning a knob during the process, which makes the operation more complicated and increases energy consumption. Utility Model Content

[0006] The technical problem to be solved by the present invention is that in this process, the temperature in the high and low temperature test chamber is adjusted by manually turning a knob, which makes the operation more troublesome and increases energy consumption. Therefore, a ventilation device for a high and low temperature test chamber is proposed.

[0007] The technical solution adopted by the utility model to solve the technical problem is: a ventilation device for a high and low temperature test box, comprising a box body and a box cover, wherein an inner box is fixedly connected to the box body, a first groove is provided on the upper side of the inner box, the inner box is fixedly connected to a bracket in the first groove, and a first fan is rotatably connected to the bracket, the box body is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a rotating block, the rotating block is provided with a guide groove on a side close to the first groove, a heating tube is evenly fixedly connected to one side of the box body and the positions of the heating tubes are staggered, and an evaporation tube is evenly fixedly connected to the other side of the box body, two second grooves are provided on the bottom side of the inner box, a bracket is fixedly connected in the second groove and a second fan is rotatably connected to the bracket, one side of the inner box is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a screw, and the screw The evaporator is connected with a sealing plate by a thread on the upper thread, and the sealing plate contacts with the bottom side of the inner box, one end of the evaporator is fixedly connected with a connecting pipe, and the connecting pipe is fixedly connected with an air guide box, and the air guide box is fixedly connected to one side of the box body, and the expansion valve is fixedly connected to the connecting pipe, and the compressor is fixedly connected to the bottom side of the expansion valve. The bottom end of the connecting pipe is fixedly connected with a diverter pipe, and the bottom end of the diverter pipe is evenly fixedly connected with a heat dissipation pipe, and one end of the heat dissipation pipe is fixedly connected to the collecting pipe, and the air collecting pipe is fixedly connected to the evaporator pipe.

[0008] As an optimal technical solution of the present invention, a groove is provided on one side of the air guide box and a flap is rotatably connected in the groove. One side of the flap contacts a pin, and the pin is rotatably connected to the air guide box. By arranging the flap and the pin, it is possible to facilitate cleaning and maintenance inside the air guide box.

[0009] As an optimal technical solution of the present invention, one side of the flap contacts a filter plate, a limit strip is sleeved on the filter plate, and the limit strip is fixedly connected to the box body. By setting the filter plate, water vapor is reduced from entering the high and low temperature test box.

[0010] As a preferred technical solution of the present invention, one side of the box body is in contact with a heat sink, and the heat sink is fixedly connected to the heat pipe, which can increase the contact area between the airflow and the heat pipe, thereby facilitating the heating of the gas entering the air guide box.

[0011] As a preferred technical solution of the present invention, a guide block is fixedly connected to the bottom end of the box body, the upper end of the guide block is fixedly connected to the inner box, the bottom end of the box body is fixedly connected to an air pump, and an air extraction hole is opened in the guide block, and the upper side of the air extraction hole is communicated with the interior of the inner box. By setting the guide block, two channels can be formed, which is convenient for cooling or heating.

[0012] The utility model has the following advantages: a rotating block and a guide block are arranged between the box body and the inner box to cooperate with the first fan and the second fan to form a guide channel, and then, with the assistance of the heating pipe and the evaporation pipe, the air flow can be heated and cooled. At the same time, the air pump is used to extract the gas, so that the gas in the inner box is quickly discharged, which can improve the ventilation efficiency. At the same time, the heat generated by the condenser is guided to the side of the heating pipe in the box body, which can make the air warm up quickly and reduce the ventilation energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic front view cross-sectional structural diagram of a ventilation device for a high and low temperature test chamber according to a preferred embodiment of the present invention;

[0014] Figure 2 This is a three-dimensional structural diagram of a ventilation device for a high and low temperature test chamber according to a preferred embodiment of the present invention;

[0015] Figure 3 The utility model is a schematic diagram of a front cross-sectional structure of an air guide box of a ventilation device of a high and low temperature test box according to a preferred embodiment of the present invention.

[0016] Explanation of the accompanying symbols: 1. Box body; 2. Inner box; 3. First groove; 4. First fan; 5. Rotating block; 6. Heating tube; 7. Evaporating tube; 8. Second groove; 9. Second fan; 10. Guide block; 11. Air pump; 12. Exhaust hole; 13. Screw; 14. Sealing plate; 15. Air guide box; 16. Connecting pipe; 17. Expansion valve; 18. Compressor; 19. Diverter pipe; 20. Heat dissipation pipe; 21. Gas collecting pipe; 22. Heat sink; 23. Third groove; 24. Filter; 25. Third fan; 26. Air inlet slot; 27. Flip plate; 28. Pin; 29. ​​Filter plate; 30. Limit strip. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Please refer to Figure 1-3The ventilation device of a high and low temperature test box shown in the figure includes a box body 1 and a box cover. An inner box 2 is fixedly connected to the box body 1, and two channels are formed inside the box body 1 and outside the inner box 2. A first groove 3 is provided on the upper side of the inner box 2. The inner box 2 is located in the first groove 3 and is fixedly connected to a bracket, and a first fan 4 is rotatably connected to the bracket. The rotation of the first fan 4 can make the air flow move out of the inner box 2 to the guide groove. A first motor is fixedly connected to the box body 1, and a rotating block 5 is fixedly connected to the output end of the first motor. A guide groove is provided on the side of the rotating block 5 close to the first groove 3. A heating tube 6 is evenly fixedly connected to one side of the box body 1, and the positions of the heating tubes 6 are staggered. By staggering the heating tubes 6, the contact area between the air flow and the heating tube 6 can be increased, thereby improving the heating efficiency. There is another One side is evenly fixedly connected with an evaporation tube 7, which is located on one side of the box body 1 and can quickly cool down through air circulation. Two second grooves 8 are provided on the bottom side of the inner box 2. A bracket is fixedly connected in the second groove 8 and a second fan 9 is rotatably connected to the bracket. The rotation of the second fan 9 can allow gas to enter the inner box 2. A second motor is fixedly connected to one side of the inner box 2, and a screw 13 is fixedly connected to the output end of the second motor. A sealing plate 14 is threadedly connected to the screw 13. The second motor drives the screw 13 to rotate, which can make the sealing plate 14 correspond to a single second groove 8, thereby avoiding mutual interference between the two channels. The sealing plate 14 contacts the bottom side of the inner box 2, and one end of the evaporation tube 7 is fixedly connected with a connecting pipe 16, which is fixedly connected to the air guide box 15. The air box 15 is fixedly connected to one side of the box body 1, and the expansion valve 17 is fixedly connected to the connecting pipe 16. The connecting pipe 16, the expansion valve 17, the compressor 18, the heat dissipation pipe 20 and the evaporation pipe 7 constitute a cooling path, which can cool the inner box 2 through air circulation. The refrigerant is adiabatically compressed to a higher pressure in the compressor 18, and the exhaust temperature is increased by consuming work. The compressed high-temperature and high-pressure refrigerant enters the condenser, and isothermally exchanges heat with the surrounding medium in the condenser, releases heat and condenses into liquid. The condensed high-pressure liquid is throttled and depressurized by the expansion valve and enters the evaporator. The isothermal evaporation in the evaporator absorbs heat, thereby achieving a cooling effect. The connecting pipe 16 is located at the bottom side of the expansion valve 17 and is fixedly connected to the compressor 18. The bottom end of the connecting pipe 16 is fixedly connected to the diverter pipe 1 9. The bottom end of the diverter pipe 19 is evenly fixedly connected with the heat dissipation pipe 20, and one end of the heat dissipation pipe 20 is fixedly connected with the air collecting pipe 21. The air collecting pipe 21 is fixedly connected to the evaporation pipe 7. A third groove 23 is provided on one side of the air guide box 15, and a filter 24 is fixedly connected in the third groove 23. A third fan 25 is rotatably connected in the filter 24. The third fan 25 prompts the air flow to enter the air guide box 15, and then the air flow contacts the heat dissipation pipe 20, which can increase the air flow heating speed and improve the heating effect. An air inlet groove 26 is provided on one side of the air guide box 15. The air inlet groove 26 is communicated with the inside of the box body 1. An electric push rod is fixedly connected to one side of the air guide box 15, and a pressure plate is fixedly connected to one end of the electric push rod, and the pressure plate corresponds to the air inlet groove 26. The electric push rod drives the pressure plate to close the air inlet groove 26.

[0019] Among them, the air guide box 15 rotates to connect the pin 28, the pin 28 contacts the flap 27, and the flap 27 rotates to connect the groove, which is located on one side of the air guide box 15. By setting the pin 28, the air guide box 15 can be easily disassembled and opened to achieve the effect of maintaining the filter plate 29.

[0020] The box body 1 is fixedly connected to a limiting strip 30 , which is sleeved on the filter plate 29 , the filter plate 29 and one side of the flap 27 to reduce the entry of water vapor into the air guide box 15 .

[0021] The heat sink 22 is fixedly connected to the heat pipe 20 and contacts one side of the box 1. By providing the heat sink 22, the contact surface between the airflow and the heat pipe 20 is increased, thereby improving the airflow temperature replacement speed.

[0022] Among them, the inner box 2 is communicated with the upper side of the air extraction hole 12, the air extraction hole 12 is located in the guide block 10, the air pump 11 is fixedly connected to the bottom end of the box body 1, the inner box 2 is fixedly connected to the upper end of the guide block 10, and the guide block 10 is fixedly connected to the bottom end of the box body 1. By setting the air pump 11 to extract the gas in the inner box 2, it can facilitate air intake and increase the ventilation effect.

[0023] Working principle: When testing in the high and low temperature test chamber, start the first motor and rotate the rotating block 5, the guide groove corresponds to the evaporation tube 7, and then the second motor drives the screw 13 to rotate, and causes the sealing plate 14 to correspond to the second fan 9 on the left, and then the gas evenly contacts the evaporator, so that the inner box 2 is cooled and the temperature is reduced. At the same time, a large amount of heat is dissipated from the heat pipe 20. After the cooling test is completed, start the first motor to drive the rotating block 5 to rotate, the guide groove corresponds to the heating tube 6, and start the third fan 25 to drive the airflow into the air guide box 15. At this time, the electric push rod contracts, the pressure plate moves and makes the air inlet slot 26 open. At the same time, the air pump 11 extracts the airflow in the inner box 2 from the exhaust hole 12 to avoid the slow heating rate of the airflow caused by the contact of cold and hot air flows. At the same time, the second motor drives the screw 13 to rotate, and causes the sealing plate 14 to correspond to the second groove 8 on the right, and then the airflow contacts the heating tube 6, thereby increasing the heating rate in the inner box 2.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

[0025] Other parts of the present invention that are not described in detail belong to the prior art and will not be described in detail here.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A ventilation device for a high and low temperature test box, comprising a box body (1) and a box cover, wherein an inner box (2) is fixedly connected to the box body (1), characterized in that: A first groove (3) is provided on the upper side of the inner box (2); the inner box (2) is fixedly connected to a bracket in the first groove (3); and a first fan (4) is rotatably connected to the bracket; a first motor is fixedly connected to the box body (1); a rotating block (5) is fixedly connected to the output end of the first motor; a guide groove is provided on the rotating block (5) near the first groove (3); a heating tube (6) is evenly fixedly connected to one side of the box body (1); and the positions of the heating tubes (6) are staggered; and the other side of the box body (1) is evenly fixedly connected to the heating tube (6). An evaporation tube (7) is fixedly connected, two second grooves (8) are provided on the bottom side of the inner box (2), a bracket is fixedly connected in the second groove (8), and a second fan (9) is rotatably connected to the bracket, a second motor is fixedly connected to one side of the inner box (2), a screw (13) is fixedly connected to the output end of the second motor, a sealing plate (14) is threadedly connected to the screw (13), and the sealing plate (14) contacts the bottom side of the inner box (2), and a connecting pipe (16) is fixedly connected to one end of the evaporation tube (7), and the connecting pipe (16) is fixedly connected to an air guide box (15), the air guide box (15) is fixedly connected to one side of the box body (1), the connecting pipe (16) is fixedly connected to an expansion valve (17), the connecting pipe (16) is located at the bottom side of the expansion valve (17) and is fixedly connected to a compressor (18), the bottom end of the connecting pipe (16) is fixedly connected to a shunt pipe (19), the bottom end of the shunt pipe (19) is evenly fixedly connected to a heat dissipation pipe (20), one end of each of the heat dissipation pipes (20) is fixedly connected to an air collecting pipe (21), the air collecting pipe ( 21) is fixedly connected to the evaporation tube (7), a third groove (23) is provided on one side of the air guide box (15), and a filter (24) is fixedly connected in the third groove (23), a third fan (25) is rotatably connected in the filter (24), an air inlet groove (26) is provided on one side of the air guide box (15), and the air inlet groove (26) is communicated with the interior of the box body (1), an electric push rod is fixedly connected to one side of the air guide box (15), and a pressure plate is fixedly connected to one end of the electric push rod, and the pressure plate corresponds to the air inlet groove (26).

2. A ventilation device for a high and low temperature test chamber according to claim 1, characterized in that: A groove is provided on one side of the air guide box (15) and a flap (27) is rotatably connected in the groove. One side of the flap (27) contacts a staple (28), and the staple (28) is rotatably connected to the air guide box (15).

3. A ventilation device for a high and low temperature test chamber as claimed in claim 2, characterized in that: One side of the flap (27) contacts a filter plate (29), a limit strip (30) is sleeved on the filter plate (29), and the limit strip (30) is fixedly connected to the box body (1).

4. A ventilation device for a high and low temperature test chamber as claimed in claim 3, characterized in that: One side of the box body (1) is in contact with a heat sink (22), and the heat sink (22) is fixedly connected to the heat pipe (20).

5. The ventilation device for a high and low temperature test chamber according to claim 4, characterized in that: The bottom end of the box body (1) is fixedly connected to a guide block (10), the upper end of the guide block (10) is fixedly connected to the inner box (2), the bottom end of the box body (1) is fixedly connected to an air pump (11), an air extraction hole (12) is provided in the guide block (10), and the upper side of the air extraction hole (12) is communicated with the interior of the inner box (2).

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