CN212942975U

CN212942975U - Constant temperature and humidity box

Info

Publication number: CN212942975U
Application number: CN202021471414.XU
Authority: CN
Inventors: 钟建荣
Original assignee: Guangzhou Huayou Testing Technology Service Co ltd
Current assignee: Guangzhou Huayou Testing Technology Service Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-04-13
Anticipated expiration: 2030-07-23

Abstract

The utility model discloses a constant temperature and humidity case, including experimental box, the centre of experimental box is provided with experimental storehouse, the fan of breathing in is installed to the inboard in experimental storehouse, the air discharge fan is installed to the below of the fan of breathing in, the fan of breathing in all is provided with one side of air discharge fan and is connected the air flue, the tip inboard of connecting the air flue and being connected with the fan of breathing in and air discharge fan all is provided with pneumatic check valve, two connect the middle movable mounting of air flue has the piece fixed frame that absorbs moisture, the middle fixed mounting of piece fixed frame that absorbs moisture has the piece that absorbs moisture, the one end surface movable mounting of piece fixed frame that absorbs moisture has the restriction piece. The utility model discloses an install suction fan, air discharge fan, connect the air flue and the piece that absorbs moisture can realize that equipment is inside carries out the air self-loopa, need not follow external introduction air when adjusting equipment inside air, guarantee that equipment inside measuring environment can not appear changing, guarantee experimental data's accuracy nature.

Description

Constant temperature and humidity box

Technical Field

The utility model relates to a constant temperature and humidity case technical field specifically is a constant temperature and humidity case.

Background

With the rapid development of social economy, the constant temperature and humidity chamber refers to a constant temperature and humidity test chamber, which is also called a programmable constant temperature and humidity test chamber FR-1204 constant temperature and humidity chamber, belongs to the same series as a high-low temperature alternating hygrothermal test chamber/GDS-100, is a necessary test device in the fields of aviation, automobiles, household appliances, scientific research and the like, is used for testing and determining parameters and performances of electricians, electronics and other products and materials after high temperature, low temperature, alternating hygrothermal or temperature environment change of constant test, can be divided into a table type and a vertical type, and is mainly characterized in that the temperature and the humidity can be different, so that the generated temperature can be different, the vertical type can be used for low temperature and drying below the normal temperature, and the table type can only be used for temperature and high humidity above the normal temperature.

However, when the existing constant temperature and humidity box is used, once the internal humidity is high, air needs to be sucked again from the outside, and the air inside the equipment is replaced, and dust and magazines are easy to enter the equipment in the replacement process, so that the internal environment of the equipment is affected, and the detection is not facilitated; therefore, the existing requirements are not met, and a constant temperature and humidity box is provided for the requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a constant temperature and humidity case to solve the current constant temperature and humidity case that proposes among the above-mentioned background art when using in case inside humidity needs follow the external air of inhaling again when great, replace the equipment inside air, and make dust and magazine entering equipment inside easily in the replacement process, cause the influence scheduling problem to equipment internal environment.

In order to achieve the above object, the utility model provides a following technical scheme: a constant temperature and humidity box comprises a test box body, wherein a test chamber is arranged in the middle of the test box body, an air suction fan is arranged on the inner side of the test chamber, an exhaust fan is arranged below the air suction fan, a connecting air passage is arranged on the same side of the air suction fan and the exhaust fan, a pneumatic one-way valve is arranged on the inner side of the end part of the connecting air passage connected with the air suction fan and the exhaust fan, a moisture absorption sheet fixing frame is movably arranged in the middle of the two connecting air passages, a moisture absorption sheet is fixedly arranged in the middle of the moisture absorption sheet fixing frame, a limiting block is movably arranged on the surface of one end of the moisture absorption sheet fixing frame, a clamping plate is arranged on the outer side of one end of the moisture absorption sheet fixing frame, a rotating base is arranged below the clamping plate, a rotating motor is arranged inside the rotating base, a power bevel gear is fixedly arranged at the front end of the rotating, the middle of the transmission bevel gear penetrates through and is fixedly provided with a rotary bearing, the upper end of the rotary bearing penetrates through the rotary base and is fixedly connected with the bottom surface of the clamping plate, the bottom surface of the rotary base is fixedly provided with a movable sliding block, the middle of the movable sliding block penetrates through and is provided with a screw rod, a screw rod gear is fixedly arranged on the outer side of one end of the screw rod, a movable motor gear is arranged below the screw rod gear, a movable motor is fixedly arranged on one side of the movable motor gear, and a sealing side plate is movably arranged on one side of the test box body.

Preferably, the outer surface of the screw rod and the inner side surface of the movable sliding block are both provided with threads with the same rotation direction, and the screw rod is connected with the movable sliding block through the threads.

Preferably, the upper end face of the limiting block is fixedly provided with a guide rod, the guide rod is inserted into the clamping plate, and a light spring is arranged between the guide rod and the clamping plate.

Preferably, sealing rings are arranged between the upper surface and the lower surface of the moisture absorption sheet fixing frame and the middle of the test box body, and the sealing rings are fixedly installed with the test box body.

Preferably, the rotation directions of the suction fan and the exhaust fan are completely opposite.

Preferably, ball bearings are arranged between the outer sides of the two ends of the screw rod and the test box body, and the screw rod is connected with the test box body through the ball bearings.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a when humidity control in the constant temperature and humidity case goes wrong and leads to inside humidity to be higher, can switch on the power of suction fan and air discharge fan, start the inboard pneumatic check valve of connection air flue tip simultaneously, make suction fan and air discharge fan start simultaneously, suction fan can be through drawing the inside air of test chamber to its connection air flue that connects inside, the air in the connection air flue that connects after air discharge fan starts simultaneously discharges to test chamber inside, because the suction that the air discharge fan produced can suck the suction fan and connect the inside air of air flue downwards, make the air current of connection air flue inside that the suction fan connects pass the moisture absorption piece and get into another connection air flue, discharge test chamber by the air discharge fan at last, suction fan and air discharge fan can realize the self-loopa of the inside air current of equipment simultaneously, and the air current can be carried out the partial absorption by moisture and the moisture that the moisture contained in the air current by the moisture absorption piece when passing the moisture absorption piece in the self-loopa process, the humidity of air in the test bin can be adjusted, the humidity during the test is ensured to be in a specified range, and the stability of the internal environment of the equipment during the test is ensured;

2. the utility model can close the pneumatic one-way valve after the humidity in the equipment is adjusted, then switch on the power supply of the mobile motor and start, after the mobile motor is started, the screw gear and the screw fixed with the screw gear are rotated by driving the mobile motor gear to rotate, so that the screw drives the mobile slider and the clamping plate fixed above the mobile slider to move integrally by the friction of the screw thread when rotating, when the clamping plate moves, the moisture absorption piece fixing frame can move by driving the rotary bearing to move, so that the moisture absorption piece fixing frame is extracted from the middle of the two connecting air passages, after the mobile slider moves a certain distance, the power supply of the rotary motor is switched on and started, after the rotary motor is started, the transmission bevel gear and the rotary bearing fixed with the transmission bevel gear are rotated by driving the power bevel gear to rotate, so that the rotary bearing drives the clamping plate to rotate to enable the moisture absorption piece fixing frame to synchronously rotate, break off the rotating electrical machines power after the rotatory 180 degrees of clamping board, then open sealed curb plate, the screw rod can continuously drive this moment and remove the slider and remove, the piece fixed frame that absorbs moisture after rotatory 180 degrees stretches out from the sealed curb plate of opening, can change the piece that absorbs moisture of a large amount of moisture and moisture this moment, conveniently change the piece that absorbs moisture, guarantee the moisture absorption efficiency of piece that absorbs moisture, adjust inside humidity here when convenient next test.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a schematic structural view at a position a of the present invention;

fig. 3 is a schematic structural view of the utility model at B;

fig. 4 is a schematic structural diagram of the position C of the present invention.

In the figure: 1. a test box body; 2. a test bin; 3. an air suction fan; 4. connecting an air passage; 5. an exhaust fan; 6. a moisture-absorbing sheet fixing frame; 7. a moisture-absorbing sheet; 8. installing a clamping plate; 9. a rotating bearing; 10. rotating the base; 11. sealing the side plate; 12. a screw; 13. a moving motor; 14. moving the motor gear; 15. a screw gear; 16. a drive bevel gear; 17. a power bevel gear; 18. a rotating electric machine; 19. moving the slide block; 20. and limiting the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The moving motor 13 (model 5IK60RGN-CF), the suction fan 3 (model 2025DC12VB20.25A), the exhaust fan 5 (model HY45T-05A) and the rotating motor 18 (model ncv28-400-60C) mentioned in the present invention can be purchased from the market or obtained by private customization.

Referring to fig. 1 to 4, the present invention provides an embodiment: a constant temperature and humidity box comprises a test box body 1, a test chamber 2 is arranged in the middle of the test box body 1, an air suction fan 3 is installed on the inner side of the test chamber 2, an exhaust fan 5 is installed below the air suction fan 3, a connecting air passage 4 is arranged on the same side of the air suction fan 3 and the exhaust fan 5, pneumatic check valves are arranged on the inner sides of the end parts of the connecting air passage 4, which are connected with the air suction fan 3 and the exhaust fan 5, the communication between air and the connecting air passage 4 is convenient to control, the sealing performance of the device during testing is ensured, a moisture absorption sheet fixing frame 6 is movably installed in the middle of the two connecting air passages 4, a moisture absorption sheet 7 is fixedly installed in the middle of the moisture absorption sheet fixing frame 6, a limiting block 20 is movably installed on the surface of one end of the moisture absorption sheet fixing frame 6, the moisture absorption sheet fixing frame 6 is convenient to fix the moisture absorption sheet fixing frame 6, the moisture absorption sheet fixing frame 6, the moisture absorption piece fixing frame comprises a moisture absorption piece fixing frame 6, a clamping plate 8 is installed on the outer side of one end of the moisture absorption piece fixing frame 6, a rotating base 10 is installed below the clamping plate 8, a rotating motor 18 is installed inside the rotating base 10, a power bevel gear 17 is fixedly installed at the front end of the rotating motor 18, a transmission bevel gear 16 is installed on one side of the power bevel gear 17, a rotating bearing 9 is fixedly installed in the middle of the transmission bevel gear 16 in a penetrating mode, the upper end of the rotating bearing 9 is fixedly connected with the bottom surface of the clamping plate 8 in a penetrating mode, a moving sliding block 19 is fixedly installed on the bottom surface of the rotating base 10, a screw 12 is installed in the middle of the moving sliding block 19 in a penetrating mode, a screw gear 15 is fixedly installed on the outer side of one end of the screw 12, a moving motor gear 14.

Further, the outer surface of the screw 12 and the inner side surface of the movable slider 19 are both provided with threads with the same turning direction, the screw 12 is in threaded connection with the movable slider 19, and the threaded connection enables the screw 12 to be controlled to move along the surface of the screw 12 when the screw 12 rotates, so that the screw 12 drives the rotary base 10 to move.

Further, the upper end face fixed mounting of restriction piece 20 has the guide bar, and the guide bar is pegged graft in the inside of clamping board 8, is provided with light spring between guide bar and the clamping board 8, and guide bar and light spring make things convenient for restriction piece 20 to upwards remove, make things convenient for restriction piece 20 to break away from in the tip draw-in groove of moisture absorption piece fixed frame 6, make things convenient for moisture absorption piece fixed frame 6 to change.

Further, the upper surface and the lower surface of the moisture absorption piece fixing frame 6 and the middle of the test box body 1 are respectively provided with a sealing ring, the sealing rings are fixedly installed on the test box body 1, the sealing rings can ensure that a gap between the moisture absorption piece fixing frame 6 and the test box body 1 is fully blocked, gas leakage cannot occur, and the stability of the internal gas pressure of the equipment is ensured.

Further, the rotation direction of air suction fan 3 and exhaust fan 5 is opposite completely, and air suction fan 3 and exhaust fan 5 that rotation direction is opposite completely conveniently drive the inside gas of equipment and flow, realize gas circulation, conveniently circulate the dehumidification, correct the inside humidity of equipment.

Further, the ball bearings are arranged between the outer sides of the two ends of the screw 12 and the test box body 1, the screw 12 is connected with the test box body 1 through the ball bearings, the ball bearings are simple in structure and convenient to use, the screw 12 is separated from the test box body 1, the screw 12 can freely rotate after being stressed, and the test box body 1 cannot block the screw 12.

The working principle is as follows: when the device is used, when the internal humidity is higher due to the error of the humidity adjustment in the constant temperature and humidity chamber, the power supplies of the air suction fan 3 and the air discharge fan 5 can be connected, the pneumatic one-way valve on the inner side of the end part of the air passage 4 is started at the same time, the air suction fan 3 and the air discharge fan 5 are started at the same time, when the air suction fan 3 is started, the air in the test chamber 2 is extracted into the connection air passage 4 connected with the test chamber, and the air in the connection air passage 4 connected with the air suction fan 3 is discharged into the test chamber 2 after the air discharge fan 5 is started, because the air suction force generated by the air discharge fan 5 can suck the air in the connection air passage 4 downwards, the air flow in the connection air passage 4 connected with the air suction fan 3 passes through the moisture absorption sheet 7 to enter the other connection air passage 4 and is finally discharged into the test chamber 2 by the air discharge fan 5, the, and the air current will be absorbed by the moisture absorption sheet 7 partially when passing through the moisture absorption sheet 7 in the self-circulation process, the air humidity inside the test chamber 2 can be adjusted, the humidity during the test is ensured to be within the specified range, the stability of the internal environment of the equipment during the test is ensured, after the humidity adjustment inside the equipment is finished, the pneumatic one-way valve can be closed, then the power supply of the mobile motor 13 is switched on and started, the mobile motor 13 is started to drive the mobile motor gear 14 to rotate so that the screw gear 15 and the screw 12 fixed with the screw gear 15 rotate, the screw 12 drives the mobile slider 19 and the clamping plate 8 fixed above the mobile slider 19 to move integrally through the friction of the threads when rotating, the moisture absorption sheet fixing frame 6 can be moved by driving the rotary bearing 9 when the clamping plate 8 moves, so that the moisture absorption sheet fixing frame 6 is drawn out from the middle of the two connecting air passages 4, after the movable sliding block 19 moves for a certain distance, the power supply of the rotating motor 18 is switched on and started, after the rotating motor 18 is started, the power bevel gear 17 is driven to rotate, so that the transmission bevel gear 16 and the rotating bearing 9 fixed with the transmission bevel gear 16 rotate, the rotating bearing 9 drives the clamping plate 8 to rotate, so that the moisture absorption sheet fixing frame 6 synchronously rotates, after the clamping plate 8 rotates for 180 degrees, the power supply of the rotating motor 18 is switched off, then the sealing side plate 11 is opened, the screw 12 can continuously drive the movable sliding block 19 to move at the moment until the moisture absorption sheet fixing frame 6 rotating for 180 degrees extends out of the opened sealing side plate 11, at the moment, the moisture absorption sheet 7 absorbing a large amount of moisture and humidity can be replaced, the moisture absorption sheet 7 is convenient to replace, the moisture absorption efficiency of the moisture absorption sheet 7 is ensured, the internal humidity can be conveniently adjusted at the next test, and the structure is, The operation is convenient.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a constant temperature and humidity case, includes experimental box (1), its characterized in that: the middle of the test box body (1) is provided with a test chamber (2), an air suction fan (3) is installed on the inner side of the test chamber (2), an exhaust fan (5) is installed below the air suction fan (3), the air suction fan (3) and the exhaust fan (5) are both provided with a connecting air passage (4) on the same side, the inner sides of the ends of the connecting air passage (4) connected with the air suction fan (3) and the exhaust fan (5) are both provided with a pneumatic one-way valve and a pneumatic two-way valve, the middle movable mounting of the connecting air passage (4) is provided with a moisture absorption sheet fixed frame (6), the middle fixed mounting of the moisture absorption sheet fixed frame (6) is provided with a moisture absorption sheet (7), one end surface movable mounting of the moisture absorption sheet fixed frame (6) is provided with a limiting block (20), one end outer side of the moisture absorption sheet fixed frame (6) is provided with a clamping plate (8), a rotary base (10), the clamping device is characterized in that a rotating motor (18) is installed inside the rotating base (10), a power bevel gear (17) is fixedly installed at the front end of the rotating motor (18), a transmission bevel gear (16) is installed on one side of the power bevel gear (17), a rotating bearing (9) penetrates through and is fixedly installed in the middle of the transmission bevel gear (16), the upper end of the rotating bearing (9) penetrates through the rotating base (10) and is fixedly connected with the bottom surface of the clamping plate (8), a moving slider (19) is fixedly installed on the bottom surface of the rotating base (10), a screw rod (12) penetrates through and is installed in the middle of the moving slider (19), a screw rod gear (15) is fixedly installed on the outer side of one end of the screw rod (12), a moving motor gear (14) is installed below the screw rod gear (15), and a moving motor (13) is fixedly, one side of the test box body (1) is movably provided with a sealing side plate (11).

2. The constant temperature and humidity cabinet as claimed in claim 1, wherein: the outer surface of the screw rod (12) and the inner side surface of the movable sliding block (19) are provided with threads with the same rotating directions, and the screw rod (12) is in threaded connection with the movable sliding block (19).

3. The constant temperature and humidity cabinet as claimed in claim 1, wherein: the upper end face of the limiting block (20) is fixedly provided with a guide rod, the guide rod is inserted into the clamping plate (8), and a light spring is arranged between the guide rod and the clamping plate (8).

4. The constant temperature and humidity cabinet as claimed in claim 1, wherein: and sealing rings are arranged on the upper surface and the lower surface of the moisture absorption sheet fixing frame (6) and in the middle of the test box body (1), and are fixedly installed with the test box body (1).

5. The constant temperature and humidity cabinet as claimed in claim 1, wherein: the rotation directions of the air suction fan (3) and the exhaust fan (5) are completely opposite.

6. The constant temperature and humidity cabinet as claimed in claim 1, wherein: the test device is characterized in that ball bearings are arranged on the outer sides of two ends of the screw rod (12) and in the middle of the test box body (1), and the screw rod (12) is connected with the test box body (1) through the ball bearings.