A humidifying device for a low-pressure damp heat test chamber

Abstract

The utility model discloses a kind of humidifying device of low air pressure damp heat test chamber, it is related to damp heat test chamber technical field, its technical scheme is: including test chamber component, test chamber component includes test chamber body, test chamber body is internally provided with test chamber room, test chamber body inside is fixed with transverse bulkhead plate.The utility model extends to test chamber room inside by steam discharge hard pipe, steam diffusion distance is shortened, directional airflow is generated by steam diffusion auxiliary structure formed by fan blade simultaneously, steam diffusion is accelerated, local high humidity area formation is effectively avoided, ensure that the humidity of each area in chamber room is consistent, improve test data accuracy, the fan blade of diffusion auxiliary structure can accelerate steam diffusion speed, shorten the time when humidity in chamber room reaches set value, reduce product test cycle and cost, while guaranteeing that initial environmental parameter is stable during test, improve the repeatability and comparability of test result.

Description

Technical Field

[0001] This utility model relates to the technical field of damp heat test chambers, specifically to a humidification device for a low-pressure damp heat test chamber. Background Technology

[0002] In aerospace, electronics, electrical engineering, and materials science, low-pressure humidity test chambers are often used to simulate the relevant environment for reliability testing in order to ensure that products can maintain stable working performance in complex environments with high altitude, low pressure, and high humidity. Among them, the humidification device is one of the core functional components of the low-pressure humidity test chamber. Its humidification efficiency, the uniformity of steam distribution in the chamber, and its adaptability to the low-pressure environment directly determine the accuracy and stability of the test environment parameters, and thus affect the reliability of the product test results.

[0003] The existing steam exhaust pipe is in a fixed position and lacks an effective steam diffusion auxiliary structure. It relies solely on the buoyancy of the steam itself and the weak airflow in the chamber for diffusion. Under low pressure, the diffusion rate of steam is further reduced, resulting in a longer time for the humidity in the chamber to reach the set value and low humidification efficiency. This not only prolongs the product testing cycle but also increases testing costs. Utility Model Content

[0004] Therefore, this utility model provides a humidification device for a low-pressure damp heat test chamber, which solves the problem of fixed position of steam exhaust pipe and lack of effective steam diffusion auxiliary structure by means of a steam diffusion auxiliary unit.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a humidification device for a low-pressure humidity and heat test chamber, comprising a test chamber assembly, the test chamber assembly including a test chamber body, a test chamber chamber being formed inside the test chamber body, a horizontal partition plate being fixedly installed inside the test chamber body, a lower installation chamber and an upper installation chamber being formed at the bottom and top of the horizontal partition plate respectively, a vertical partition plate being fixedly installed on one side of the upper installation chamber, an obstacle avoidance groove being formed inside the vertical partition plate, a humidification device unit being provided inside the lower installation chamber, and a steam diffusion auxiliary unit being provided inside the upper installation chamber, the steam diffusion auxiliary unit including a motor, the... A reciprocating lead screw is provided at the top of the motor, and a sliding seat is fitted on the outside of the reciprocating lead screw. A connecting frame is fixedly provided on one side of the sliding seat, and a connecting bracket is fixedly provided inside the connecting frame. Two side brackets are fixedly provided on one side of the connecting frame. A second motor is provided inside the connecting frame. A rotating shaft is provided at one end of the second motor. A pulley is fixedly fitted on the outside of the rotating shaft. A synchronous belt is fitted on the outside of the pulley. A second pulley is provided inside the synchronous belt. The first pulley and the second pulley are connected by a synchronous belt drive. A sleeve is fixedly inserted inside the second pulley. A fan blade is fixedly fitted on the outside of the sleeve. A steam exhaust pipe is inserted inside the sleeve.

[0006] Preferably, a chamber door is fixedly provided on one side of the test chamber body, and the chamber door is movably connected to the test chamber body via a hinge.

[0007] Preferably, a ventilation window is fixedly provided on one side of the diaphragm, the top of the ventilation window is fixedly connected to the upper installation chamber, and the bottom of the ventilation window is fixedly connected to the bottom of the lower installation chamber.

[0008] Preferably, the humidification device unit includes a humidification tank, which is fixedly installed inside the lower installation chamber. A steam exhaust hose is fixedly connected to the top of the humidification tank. The steam exhaust hose passes through a horizontal partition and is fixedly connected to the horizontal partition. One end of the top of the steam exhaust hose is fixed to one end of a steam exhaust rigid pipe.

[0009] Preferably, the top of the motor is fixedly connected to the bottom of the transverse partition, the output end of the motor is fixedly connected to the bottom of the reciprocating screw, the bottom of the reciprocating screw passes through the transverse partition and is connected to the transverse partition through a bearing, the top of the reciprocating screw is connected to the top of the upper mounting chamber through a bearing, and the reciprocating screw passes through the sliding seat and is connected to the sliding seat through a ball nut pair.

[0010] Preferably, one side of the connecting frame is slidably connected to one side wall of the upper mounting chamber.

[0011] Preferably, the second motor is fixedly installed inside the connecting frame, the output end of the second motor is fixedly connected to one end of the rotating shaft, and one end of the rotating shaft passes through the connecting bracket and is connected to the connecting bracket through a bearing.

[0012] Preferably, the sleeve is fitted over the outside of the steam discharge rigid pipe and connected to the steam discharge rigid pipe via a bearing.

[0013] Preferably, the steam exhaust rigid pipe passes through the two side supports and is fixedly connected to the two side supports, and one end of the steam exhaust rigid pipe passes through the obstacle avoidance groove and extends into the interior of the test chamber.

[0014] The present invention has the following advantages: By extending the steam exhaust pipe into the test chamber, the steam diffusion distance is shortened. At the same time, the steam diffusion auxiliary structure composed of fan blades generates directional airflow, which accelerates steam diffusion, effectively avoids the formation of local high humidity areas, ensures consistent humidity in all areas of the chamber, and improves the accuracy of test data. The fan blades of the diffusion auxiliary structure can accelerate the steam diffusion speed, shorten the time for the humidity in the chamber to reach the set value, reduce the product testing cycle and cost, and at the same time ensure the stability of environmental parameters in the early stage of the test, improving the repeatability and comparability of test results. Driven by a motor, a reciprocating screw moves the steam exhaust pipe vertically back and forth. The pipe height can be flexibly adjusted according to the product placement, size, and testing requirements inside the test chamber, adapting to diverse testing needs. At the same time, it avoids the limitation of fixed pipe openings on the internal space of the chamber, improving the versatility of the equipment. Attached Figure Description

[0015] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0016] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0017] Figure 1 This is a partial sectional perspective view of the main view provided for this utility model; Figure 2 A perspective view of the connection relationship at the vapor diffusion auxiliary unit provided by this utility model; Figure 3 An exploded perspective view of the vapor diffusion auxiliary unit provided by this utility model; Figure 4 A front perspective view of this utility model.

[0018] In the diagram: 10 Test chamber assembly, 11 Test chamber body, 12 Test chamber chamber, 13 Horizontal partition, 14 Lower installation chamber, 15 Upper installation chamber, 16 Vertical partition, 17 Obstacle avoidance groove, 20 Chamber door, 30 Ventilation window, 40 Humidification device unit, 41 Humidification tank, 42 ​​Steam exhaust hose, 50 Steam diffusion auxiliary unit, 501 Motor 1, 502 Reciprocating screw, 503 Sliding seat, 504 Connecting frame, 505 Connecting bracket, 506 Side bracket, 507 Motor 2, 508 Rotary shaft, 509 Pulley 1, 510 Synchronous belt, 511 Pulley 2, 512 Sleeve, 513 Fan blade, 514 Steam exhaust rigid pipe. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] See attached document Figure 1 -Appendix Figure 4 This utility model provides a humidification device for a low-pressure humidity and heat test chamber, including a test chamber assembly 10. The test chamber assembly 10 includes a test chamber body 11, with a test chamber chamber 12 inside the test chamber body 11. A horizontal partition 13 is fixedly installed inside the test chamber body 11. A lower installation chamber 14 and an upper installation chamber 15 are respectively opened at the bottom and top of the horizontal partition 13. A vertical partition 16 is fixedly installed on one side of the upper installation chamber 15, and an obstacle avoidance groove 17 is opened inside the vertical partition 16. A humidification device unit 40 is installed inside the lower installation chamber 14, and a steam diffusion auxiliary unit 50 is installed inside the upper installation chamber 15. The steam diffusion auxiliary unit 50 includes a motor 501, and a reciprocating lead screw 502 is provided at the top of the motor 501. The reciprocating lead screw 502 is externally... A sliding seat 503 is fitted, a connecting frame 504 is fixedly fitted on one side of the sliding seat 503, a connecting bracket 505 is fixedly fitted inside the connecting frame 504, two side brackets 506 are fixedly fitted on one side of the connecting frame 504, a second motor 507 is fitted inside the connecting frame 504, a rotating shaft 508 is fitted at one end of the second motor 507, a pulley 509 is fixedly fitted outside the rotating shaft 508, a synchronous belt 510 is fitted outside the pulley 509, a second pulley 511 is fitted inside the synchronous belt 510, the first pulley 509 and the second pulley 511 are connected by driving through the synchronous belt 510, a sleeve 512 is fixedly inserted inside the second pulley 511, a fan blade 513 is fixedly fitted outside the sleeve 512, and a steam exhaust hard pipe 514 is inserted inside the sleeve 512; In this implementation scheme, in order to flexibly adjust the position of the steam discharge rigid pipe 514 and assist steam diffusion, motor 1 501 drives the reciprocating screw 502 to rotate. Since the reciprocating screw 502 is connected to the sliding seat 503 through a ball nut pair, and the connecting frame 504 is slidably engaged with the side wall of the upper mounting chamber 15, the sliding seat 503 drives the connecting frame 504 and the side support 506 to move vertically back and forth, thereby causing the steam discharge rigid pipe 514 fixed by the side support 506 to move along the obstacle avoidance groove 17, flexibly adjusting the height of the pipe opening in the test chamber 12 to adapt to the product placement position and test requirements. Motor 2 507 drives the rotating shaft 508 and pulley 1 509 to rotate. Through the synchronous belt 510, pulley 2 511 drives the sleeve 512 and the fan blade 513 to rotate, generating directional airflow, accelerating the diffusion of steam discharged from the pipe opening of the steam discharge rigid pipe 514, avoiding local high humidity, shortening the humidity standard attainment time, and improving humidification efficiency and uniformity. To facilitate the operation of the test chamber 12 and ensure the airtightness of the internal test environment, the device employs the following technical solution: A chamber door 20 is fixedly installed on one side of the test chamber body 11, and the chamber door 20 is movably connected to the test chamber body 11 via a hinge; a ventilation window 30 is fixedly installed on one side of the partition plate 13, with the top of the ventilation window 30 fixedly connected to the upper installation chamber 15 and the bottom of the ventilation window 30 fixedly connected to the bottom of the lower installation chamber 14; the chamber door 20 is movably connected to the test chamber body 11 via a hinge; the chamber door 20 can be opened before the test to place the product to be tested, and closed during the test to seal the test chamber 12 and maintain a low-pressure, humid and hot environment; the ventilation window 30 connects the upper installation chamber 15 and the bottom of the lower installation chamber 14, which can promote air circulation in the lower installation chamber 14. To achieve stable steam generation and accommodate the movement of the steam discharge rigid pipe 514 while preventing steam delivery interruptions, this device employs the following technical solution: The humidification unit 40 includes a humidification tank 41, which is fixedly installed inside the lower installation chamber 14. A steam discharge hose 42 is fixedly connected to the top of the humidification tank 41, passing through and being fixedly connected to the horizontal partition 13. One end of the steam discharge hose 42 is fixed to one end of the steam discharge rigid pipe 514. The humidification tank 41, fixed inside the lower installation chamber 14, can stably heat and generate steam during the experiment. To avoid affecting steam generation efficiency due to shaking during installation, a steam discharge hose 42 connected to the top of the humidifying tank 41 is fixed at one end to the humidifying tank 41 to ensure no steam leakage, and the other end passes through the horizontal partition 13 and is fixed to the steam discharge rigid pipe 514, so as to realize the smooth delivery of steam from the humidifying tank 41 to the steam discharge rigid pipe 514. At the same time, the flexible nature of the steam discharge hose 42 can flexibly extend and retract with the vertical back and forth movement of the steam discharge rigid pipe 514, which not only solves the problem of pulling of the delivery pipeline caused by the movement of the rigid pipe, but also avoids the defect that the existing fixed pipeline cannot adapt to the position adjustment, ensuring continuous and stable steam delivery. To achieve stable operation of the steam diffusion auxiliary unit 50, the following technical solution is adopted: The top of motor 501 is fixedly connected to the bottom of the transverse partition 13; the output end of motor 501 is fixedly connected to the bottom of the reciprocating screw 502; the bottom of the reciprocating screw 502 passes through the transverse partition 13 and is connected to the transverse partition 13 via a bearing; the top of the reciprocating screw 502 is connected to the top of the upper mounting chamber 15 via a bearing; the reciprocating screw 502 passes through the sliding seat 503 and is connected to the sliding seat 503 via a ball nut pair; one side of the connecting frame 504 is slidably connected to one side wall of the upper mounting chamber 15; motor 507 is fixedly installed inside the connecting frame 504; the output end of motor 507 is fixedly connected to one end of the rotating shaft 508. The shaft 508 is connected to the connecting bracket 505 at one end through a bearing. The sleeve 512 is fitted over the steam exhaust rigid pipe 514 and connected to the steam exhaust rigid pipe 514 through a bearing. The steam exhaust rigid pipe 514 passes through two side brackets 506 and is fixedly connected to the two side brackets 506. One end of the steam exhaust rigid pipe 514 passes through the obstacle avoidance groove 17 and extends into the test chamber 12. The motor 501 is fixed to the bottom of the horizontal partition 13 to provide stable support for the reciprocating screw 502. The screw is connected to the horizontal partition 13 and the top of the upper mounting chamber 15 through a bearing to ensure stable vertical reciprocating transmission. With the sliding connection between the sliding seat 503 and the connecting frame 504, the movement of the rigid pipe is precise and controllable. Motor 507 is fixed inside the connecting frame 504. The shaft 508 is limited by the bearing of the connecting bracket 505 to ensure smooth pulley transmission and prevent the synchronous belt 510 from running off-center. The sleeve 512 is fitted with a rigid tube through the bearing, which does not affect the movement of the rigid tube and can drive the fan blade 513 to rotate flexibly, realizing the coordination of rigid tube position adjustment and steam diffusion function. At the same time, the rigid tube is fixed through the side bracket 506 and extends into the chamber to further ensure the stability of steam delivery and diffusion.

[0021] The usage process of this utility model is as follows: When using this utility model, connect an external power supply and drive the humidifying tank 41, motor 501, and motor 507 through the control system. Motor 507 is selected to be suitable for humid and hot environments. The test chamber 12 and the upper installation chamber 15 are separated by a vertical partition 16. The upper installation chamber 15 and the lower installation chamber 14 are divided into two unconnected cavities by a horizontal partition 13. The ventilation window 30 is partially enclosed at the connection point with the upper installation chamber 15. The humidifying tank 41 is connected to the water supply device of the test chamber body 11 to ensure that the humidifying tank 41 maintains a suitable water level. After starting the humidifying tank 41, its internal... The heating element heats the water to generate steam. The steam is delivered to the steam exhaust pipe 514 through the top steam exhaust hose 42. Because the steam exhaust hose 42 has a certain degree of flexibility, it can extend and retract to accommodate the movement of the steam exhaust pipe 514, preventing obstruction of the steam delivery path. After entering the steam exhaust pipe 514, the steam exits through the pipe opening extending into the test chamber 12, providing the steam required for humidification to the test chamber 12. Simultaneously, the second motor 507 is started. The output of the second motor 507 drives the rotating shaft 508 to rotate, which in turn drives the externally fixed pulley 509 to rotate, with the assistance of the synchronous belt 510. The function is that pulley 509 drives pulley 511 to rotate synchronously, which in turn drives the internally fixed sleeve 512 to rotate. The fan blades 513 outside the sleeve 512 rotate together with the sleeve 512, generating a directional airflow. The airflow acts on the steam discharged from the steam exhaust pipe 514, accelerating the diffusion speed of steam in the test chamber 12, preventing steam from accumulating near the pipe opening and forming a local high humidity area, and improving the uniformity of humidity distribution. According to the humidification needs of different areas in the test chamber 12, motor 501 can be started through the control system. The output end of motor 501 drives the reciprocating screw 502 to rotate. The lead screw 502 and the sliding seat 503 are connected by a ball nut pair, and one side of the connecting frame 504 is slidably connected to the side wall of the upper mounting chamber 15. The rotation of the reciprocating lead screw 502 is converted into the vertical reciprocating movement of the sliding seat 503. The sliding seat 503 drives the connecting frame 504 and the side support 506 to move synchronously. The steam exhaust rigid pipe 514 fixedly connected to the side support 506 moves vertically back and forth along the obstacle avoidance groove 17 of the vertical partition 16 to adjust the height position of the steam exhaust pipe in the test chamber 12, adapt to test products with different placement heights, and ensure that each area can effectively contact the steam. The test chamber 12 is closed through the chamber door 20.

[0022] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A humidification device for a low-pressure humidity and heat test chamber, comprising a test chamber assembly (10), characterized in that: The test chamber assembly (10) includes a test chamber body (11), a test chamber chamber (12) is provided inside the test chamber body (11), a horizontal partition (13) is fixedly provided inside the test chamber body (11), a lower installation chamber (14) and an upper installation chamber (15) are respectively provided at the bottom and top of the horizontal partition (13), a vertical partition (16) is fixedly provided on one side of the upper installation chamber (15), an obstacle avoidance groove (17) is provided inside the vertical partition (16), a humidification device unit (40) is provided inside the lower installation chamber (14), and a steam diffusion auxiliary unit (50) is provided inside the upper installation chamber (15). The steam diffusion auxiliary unit (50) includes a motor (501), a reciprocating screw (502) is provided at the top of the motor (501), and a sliding seat (503) is sleeved on the outside of the reciprocating screw (502). A connecting frame (504) is fixedly provided on the side. A connecting bracket (505) is fixedly provided inside the connecting frame (504). Two side brackets (506) are fixedly provided on one side of the connecting frame (504). A second motor (507) is provided inside the connecting frame (504). A rotating shaft (508) is provided at one end of the second motor (507). A pulley (509) is fixedly sleeved on the outside of the rotating shaft (508). A synchronous belt (510) is sleeved on the outside of the pulley (509). A second pulley (511) is provided inside the synchronous belt (510). The pulley (509) and the second pulley (511) are driven and connected by the synchronous belt (510). A sleeve (512) is fixedly inserted inside the second pulley (511). A fan blade (513) is fixedly sleeved on the outside of the sleeve (512). A steam exhaust hard pipe (514) is inserted inside the sleeve (512).

2. The humidification device for a low-pressure humidity and heat test chamber according to claim 1, characterized in that: A chamber door (20) is fixedly provided on one side of the test chamber body (11), and the chamber door (20) is movably connected to the test chamber body (11) by a hinge.

3. The humidification device for a low-pressure humidity and heat test chamber according to claim 1, characterized in that: A ventilation window (30) is fixedly provided on one side of the diaphragm (13). The top of the ventilation window (30) is fixedly connected to the upper installation chamber (15), and the bottom of the ventilation window (30) is fixedly connected to the bottom of the lower installation chamber (14).

4. The humidification device for a low-pressure humidity and heat test chamber according to claim 1, characterized in that: The humidification device unit (40) includes a humidification tank (41), which is fixedly installed inside the lower installation chamber (14). A steam exhaust hose (42) is fixedly connected to the top of the humidification tank (41). The steam exhaust hose (42) passes through the partition plate (13) and is fixedly connected to the partition plate (13). One end of the top of the steam exhaust hose (42) is fixed to one end of the steam exhaust rigid pipe (514).

5. The humidification device for a low-pressure humidity and heat test chamber according to claim 1, characterized in that: The top of the motor (501) is fixedly connected to the bottom of the partition plate (13), the output end of the motor (501) is fixedly connected to the bottom of the reciprocating screw (502), the bottom of the reciprocating screw (502) passes through the partition plate (13) and is connected to the partition plate (13) through a bearing, the top of the reciprocating screw (502) is connected to the top of the upper mounting chamber (15) through a bearing, and the reciprocating screw (502) passes through the sliding seat (503) and is connected to the sliding seat (503) through a ball nut pair.

6. The humidification device for a low-pressure humidity and heat test chamber according to claim 1, characterized in that: The connecting frame (504) is slidably connected to one side wall of the upper installation chamber (15).

7. The humidification device for a low-pressure humidity and heat test chamber according to claim 1, characterized in that: The second motor (507) is fixedly installed inside the connecting frame (504). The output end of the second motor (507) is fixedly connected to one end of the rotating shaft (508). One end of the rotating shaft (508) passes through the connecting bracket (505) and is connected to the connecting bracket (505) through a bearing.

8. The humidification device for a low-pressure humidity and heat test chamber according to claim 1, characterized in that: The sleeve (512) is fitted outside the steam discharge hard pipe (514) and connected to the steam discharge hard pipe (514) through a bearing.

9. The humidification device for a low-pressure humidity and heat test chamber according to claim 1, characterized in that: The steam exhaust hard pipe (514) passes through the two side supports (506) and is fixedly connected to the two side supports (506). One end of the steam exhaust hard pipe (514) passes through the obstacle avoidance groove (17) and extends into the test chamber (12).

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