CN114100701B - Environmental test chamber for controlling high-low temperature alternation - Google Patents
Environmental test chamber for controlling high-low temperature alternation Download PDFInfo
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- CN114100701B CN114100701B CN202210068781.2A CN202210068781A CN114100701B CN 114100701 B CN114100701 B CN 114100701B CN 202210068781 A CN202210068781 A CN 202210068781A CN 114100701 B CN114100701 B CN 114100701B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
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Abstract
The invention discloses an environmental test box for controlling high and low temperature alternation, which comprises a box body and a box door, wherein a window is embedded in the middle of the box door, a sliding groove is formed in the edge of the window, a driving rod is fixedly installed at one end inside the sliding groove, one end of the driving rod, which is far away from the sliding groove, is movably connected with an extension rod, a cleaning device is sleeved on the outer end surface of the extension rod, the cleaning device is attached to the surface of the window, a temperature sensing device for driving the extension rod to move is arranged inside the cleaning device, a plurality of cleaning layers are fixedly embedded on the side end surface of the cleaning device, rotating rings are fixedly connected at two ends of the cleaning device, a nut is elastically embedded in the middle of each rotating ring, and a threaded groove matched with the nut is formed in the side end surface of the extension rod.
Description
Technical Field
The invention relates to the technical field of environmental chamber equipment, in particular to an environmental test chamber for controlling high-low temperature alternation.
Background
Along with the development of science and technology, people's life is not more and more kept away from various electronic equipment and internet, and this has produced higher requirement to the reliability of electronic equipment in various different environments, and wherein, environmental test chamber is exactly one kind and is used widely in the relevant reliability test of test equipment, and along with test equipment is more and more complicated, the improvement of fineness, the requirement to environmental test chamber is also more and more high.
The invention discloses a Chinese patent publication No. CN112517090A, and discloses an environmental test chamber, which comprises a test cavity, an environmental sensor and a processor; the test cavity is used for placing equipment to be tested; the environment sensor and the test cavity are arranged in a split manner and can be arranged in a to-be-tested area corresponding to the to-be-tested equipment; the environment sensor is used for acquiring the environment parameters of the area to be measured and is connected with the processor; the processor is used for receiving and processing the environmental parameters and controlling the test parameters in the test cavity. According to the environment test box, the environment sensor capable of directly collecting the environment parameters in the preset to-be-tested area in the environment test box is arranged, the obtained environment data is closer to the actual working environment of the to-be-tested equipment, the environment sensor is used for measuring the corresponding environment parameters of the to-be-tested area, the measurement accuracy is greatly improved, and meanwhile the universality of the environment test box is further improved. The invention also provides an environment test system with the beneficial effects.
Current environmental test case when the durable operating mode of operational reliability, need realize long-term low temperature and high humidity operation, when low temperature and high humidity operation, the window frosts easily and produces the water smoke, leads to being difficult to effectively run through the test sample state, and through the electrical heating mode among the prior art, leads to near the window sample piece easily, and testing environment receives the influence, influences the experiment result, and makes the control accuracy of equipment be difficult to improve.
Therefore, it is necessary to provide an environmental test chamber for controlling high and low temperature alternation to solve the above technical problems.
Disclosure of Invention
The invention aims to provide an environmental test chamber for controlling high-temperature and low-temperature alternation so as to solve the technical problem.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an environmental test case of control high low temperature alternation, includes box and chamber door, the middle part of chamber door is inlayed and is equipped with the window, the spout has been seted up at the edge of window, the inside one end fixed mounting of spout has the actuating lever, the actuating lever deviates from spout one end swing joint has the extension rod, cleaning device has been cup jointed to the outer terminal surface of extension rod, just cleaning device and the laminating of window surface, the inside temperature sensing device who drives the extension rod removal that is equipped with of cleaning device, the fixed multiunit clearance layer that inlays of cleaning device side end face, cleaning device's both ends fixedly connected with swivel becket, the middle part elasticity of swivel becket inlays and is equipped with the nut, the thread groove with nut looks adaptation is seted up to the extension rod side end face.
Further, nut side end face elastic connection has the elasticity bump, the groove with elasticity bump looks adaptation is seted up to the swivel becket, and cleaning device side end face is equipped with multiunit clearance layer, only has a set of clearance layer and window laminating during the use, and the accessible is equipped with the elasticity bump for the swivel becket nut relatively rotates.
As a further scheme of the invention, the temperature sensing device comprises a temperature sensing cavity and a temperature sensing layer, the temperature sensing layer is arranged inside the cleaning device, two ends of the temperature sensing layer are rotatably connected with the cleaning device, and the temperature sensing cavity is arranged between the temperature sensing layer and the cleaning device.
As a further scheme of the invention, a partition plate is embedded in the middle of the temperature sensing layer, the extension rod is movably connected inside the temperature sensing layer, a sealing cavity is formed between the extension rod and the temperature sensing layer, a temperature sensing medium is filled in the sealing cavity, an air gap is formed on the side end surface of the cleaning device, and the air gap is communicated with the temperature sensing cavity.
As a further scheme of the invention, an inclined plane protrusion is fixedly connected to a side end face of the extension rod, a groove matched with the inclined plane protrusion is formed in the side wall of the temperature sensing layer, a movable plate is movably arranged in the temperature sensing cavity, two ends of the movable plate are slidably connected with the rotating ring, and a convex rod attached to the inclined plane protrusion is fixedly connected to the inner wall of the movable plate.
As a further scheme of the invention, two ends of the movable plate are elastically connected with cleaning scrapers through elastic rotating shafts, the cleaning scrapers are arranged inside the air gap, and one end of the movable plate, which is far away from the convex rod, is attached to the cleaning layer.
Furthermore, a plurality of groups of guide grooves are formed in the movable plate, and the guide grooves can be used for guiding water in the cleaning layer and guiding ice slag scraped by the cleaning scraper.
As a further scheme of the invention, the inner wall of the temperature sensing layer is fixedly connected with thermal deformation metal, and the middle part of the thermal deformation metal is fixedly connected with one end of an extension rod.
As a further scheme of the invention, the middle part of the thermal deformation metal is fixedly connected with a control rod, and the inner wall of the temperature sensing layer is elastically embedded with a supporting rod matched with the control rod through a spring.
As a further scheme of the invention, the abutting rod is movably embedded in the temperature sensing layer, the temperature sensing layer is provided with a movable groove matched with the abutting rod, one end of the abutting rod is fixedly connected with a spring, one end of the spring, which is far away from the abutting rod, is elastically connected with an adjusting plate, the adjusting plate is slidably connected with the inner part of the movable groove through a limiting slide block, the middle part of the adjusting plate is engaged with an adjusting knob, and the adjusting knob is rotatably connected with the temperature sensing layer.
When the invention is used, the cleaning device is driven by the extension rod driven by the driving rod to reciprocate in the sliding groove, the driving rod can be controlled by the electric push rod, the sliding groove is positioned at the inner side of the window, the temperature in the box body is sensed by the temperature sensing device, the extension rod is controlled to move along with the temperature, and the extension rod is controlled to rotate by the engagement of the threaded groove arranged on the side end surface of the extension rod and the nut, so that the rotating ring rotates along with the temperature rise when the temperature rises, the cleaning layer is attached to the surface of the window, the cleaning device is cleaned in an auxiliary way by the cleaning layer at high temperature, the cleaning layer can effectively wipe water mist generated by high temperature in the box in the moving process, and no water mark remains, when the temperature in the box body is low, the temperature sensing device controls the movement of the extension rod along with the temperature rise, make the swivel becket rotate, cleaning device and window contact this moment, along with under the drive of actuating lever, can effectively clear up window surface frosting through cleaning device, fully avoid the visual effect variation that conditions such as high temperature steam or low temperature frosting lead to the window, also avoid electric heating to influence test result and equipment control accuracy near the temperature of window simultaneously.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of a door of the present invention;
FIG. 2 is an enlarged schematic view of the invention at A in FIG. 1;
FIG. 3 is a schematic view of the cleaning apparatus of the present invention;
FIG. 4 is a schematic view of the vertical cross-section of the cleaning apparatus of the present invention;
FIG. 5 is a cross-sectional view of the cleaning apparatus of the present invention;
FIG. 6 is a schematic view of the structure of the temperature sensing layer of the present invention;
FIG. 7 is a schematic view of the structure of the cleaning apparatus of the present invention in a vertical cross section in a low temperature state;
FIG. 8 is a cross-sectional view of the cleaning apparatus of the present invention in a low temperature state;
FIG. 9 is a schematic vertical sectional view of a second cleaning apparatus according to an embodiment of the present invention;
FIG. 10 is an enlarged view of the structure of FIG. 9 at B;
fig. 11 is a schematic view of a connecting structure of a third damping rod according to the embodiment of the invention.
In the figure: 1. a box door; 2. a cleaning device; 3. a window; 4. cleaning the layer; 5. a drive rod; 6. an extension rod; 7. a rotating ring; 8. a chute; 9. a nut; 10. an air gap; 11. a thread groove; 12. a temperature sensing cavity; 13. a temperature sensing layer; 14. elastic salient points; 15. sealing the cavity; 16. a partition panel; 17. a movable plate; 18. a nose bar; 19. the inclined plane is convex; 20. cleaning a scraper; 21. an elastic rotating shaft; 22. a diversion trench; 23. a via hole; 24. a support rod; 25. a heat-deformable metal; 26. a control lever; 27. a spring; 28. adjusting a knob; 29. an adjusting plate.
Detailed Description
Example one
As shown in fig. 1-2, an environmental test chamber for controlling high and low temperature alternation, including box and box door 1, the middle part of box door 1 is inlayed and is equipped with window 3, spout 8 has been seted up at the edge of window 3, the inside one end fixed mounting of spout 8 has actuating lever 5, actuating lever 5 deviates from 8 one end swing joint of spout has extension rod 6, cleaning device 2 has been cup jointed to the outer terminal surface of extension rod 6, and cleaning device 2 and 3 surface laminating of window, the inside temperature sensing device who drives extension rod 6 and remove that is equipped with of cleaning device 2, the fixed multiunit clearance layer 4 that is equipped with of the side end face of cleaning device 2, cleaning device 2's both ends fixedly connected with swivel becket 7, the middle part elasticity of swivel becket 7 is inlayed and is equipped with nut 9, the thread groove 11 with nut 9 looks adaptation is seted up to the side end face of extension rod 6.
When the cleaning device is used, the cleaning device 2 is driven by the driving rod 5 to drive the extension rod 6 to reciprocate in the sliding groove 8, the driving rod 5 can be controlled by an electric push rod, the sliding groove 8 is positioned on the inner side of the window 3, the temperature in the box body is sensed by the temperature sensing device and moves along with the extension of the temperature control extension rod 6, the extension rod 6 is controlled to drive the rotating ring 7 to rotate through the engagement of the thread groove 11 formed in the side end surface of the extension rod 6 and the nut 9, so that the rotating ring 7 rotates along with the temperature rise when the temperature rises, the cleaning layer 4 is attached to the surface of the window 3, the cleaning device 2 is cleaned in an auxiliary manner through the cleaning layer 4 at high temperature, the cleaning layer 4 can effectively clean water mist generated in the box due to high temperature in the moving process, no water mark is left, when the temperature in the box body is low, and the temperature sensing device controls the movement of the extension rod 6 along with the temperature rise, make swivel becket 7 rotate, cleaning device 2 and window 3 contact this moment, along with under the drive of actuating lever 5, can effectively clear up window 3 surface frostings through cleaning device 2, fully avoid the visual effect variation that conditions such as high temperature steam or low temperature frosting lead to window 3, also avoid the electric heating to influence the temperature of near window 3 test sample simultaneously, influence test result and equipment control accuracy.
Further, 9 side end face elastic connection of nut has elasticity bump 14, swivel ring 7 offer with the groove of 14 looks adaptations of elasticity bump, 2 side end faces of cleaning device are equipped with multiunit clearance layer 4, only a set of clearance layer 4 and window 3 laminating during the use, the accessible is equipped with elasticity bump 14 for swivel ring 7 can rotate 9 relative nuts, and then realizes the fast switch-over to clearance layer 4, avoids clearance layer 4 to need frequent maintenance and change.
As shown in fig. 1-4, the temperature sensing device includes a temperature sensing cavity 12 and a temperature sensing layer 13, the temperature sensing layer 13 is disposed inside the cleaning device 2, two ends of the temperature sensing layer 13 are rotatably connected to the cleaning device 2, and the temperature sensing cavity 12 is disposed between the temperature sensing layer 13 and the cleaning device 2.
As shown in fig. 1-4, a partition plate 16 is embedded in the middle of the temperature sensing layer 13, the extension rod 6 is movably connected inside the temperature sensing layer 13, a sealed cavity 15 is formed between the extension rod 6 and the temperature sensing layer 13, a temperature sensing medium is filled in the sealed cavity 15, an air gap 10 is formed on the side end surface of the cleaning device 2, and the air gap 10 is communicated with the temperature sensing cavity 12.
When the environment box is used, the temperature of gas in the box body is mainly controlled by the environment box, so that different environment working conditions are simulated, wherein the common working conditions mainly include low-temperature simulation and high-temperature and high-humidity reliability working conditions, the gas in the box body enters the temperature sensing cavity 12 through the air gap 10, the temperature is transmitted into the sealing cavity 15 through the temperature sensing layer 13, the sealing cavity 15 is filled with a temperature sensing medium, the temperature sensing medium is specifically liquid with a higher expansion coefficient, the sensing medium expands or contracts along with the temperature change in the box body, when the pressure in the sealing cavity 15 changes along with the expansion and contraction of the temperature sensing medium in the sealing cavity 15, the extension rod 6 is further pushed to move relatively, the rotating ring 7 is further driven to rotate by the movement of the extension rod 6, the joint position of the cleaning device 2 and the window 3 changes along with the temperature change in the box body, thereby reaching the best clearance effect to window 3 under the operating mode to different temperatures.
Further, the temperature sensing layer 13 may be made of a metal with high thermal conductivity, and the heat conducting medium in the sealed cavity 15 may be a liquid with high expansion coefficient such as alcohol.
As shown in fig. 1-8, an inclined protrusion 19 is fixedly connected to a side end surface of the extension rod 6, a groove matched with the inclined protrusion 19 is formed in a side wall of the temperature sensing layer 13, a movable plate 17 is movably disposed inside the temperature sensing cavity 12, two ends of the movable plate 17 are slidably connected to the rotating ring 7, and a protruding rod 18 attached to the inclined protrusion 19 is fixedly connected to an inner wall of the movable plate 17.
As shown in fig. 1-8, the two ends of the movable plate 17 are elastically connected with cleaning scrapers 20 through elastic shafts 21, the cleaning scrapers 20 are disposed inside the air gap 10, and one end of the movable plate 17 away from the protruding rod 18 is attached to the cleaning layer 4.
When the temperature sensing device of the sealed cavity 15 senses the temperature in the box body, so that the extension rod 6 moves downwards, the extension rod 6 drives the inclined plane protrusion 19 to move downwards synchronously, and the protrusion rod 18 is attached to the inclined plane protrusion 19, the inclined plane protrusion 19 has an inclined plane, so that the inclined plane protrusion 19 presses the protrusion rod 18 to push the movable plate 17 to move, the cross section of the movable plate 17 is arc-shaped, the cleaning scrapers 20 are arranged at two ends of the arc-shaped, the cleaning scrapers 20 are arranged in the air gap 10, when the temperature in the environment box body is low, the inclined plane protrusion 19 pushes the movable plate 17 to move, the cleaning scrapers 20 extend out from the air gap 10, and the rotating ring 7 rotates under the driving of the extension rod 6, so that the air gap 10 is attached to the surface of the window 3, at the time, the cleaning scrapers 20 can effectively improve the cleaning effect on the surface of the window 3, thereby solving the problem that the traditional cleaning device has poor cleaning effect at low temperature, and further fly leaf 17 and clearance layer 4 laminating, can discharge the inside unnecessary moisture in clearance layer 4 in fly leaf 17 motion process, avoid freezing under the low temperature, clearance scraper blade 20 passes through elasticity pivot 21 elasticity and links to each other simultaneously, along with the temperature constantly reduces, clearance scraper blade 20 and window 3 surface are supported and are closed, swivel ring 7 rotation volume increases, the turned angle of elasticity pivot 21 increases, thereby also increase gradually to the elasticity of clearance scraper blade 20, thereby improve the clearance effect to window 3 under the low temperature, and when the temperature rose, for avoiding clearance scraper blade 20 frequently to scrape lead to the mar etc. to window 3, along with the temperature rise extension rod 6 moves up, thereby clearance scraper blade 20 withdraws the inside of air gap 10, swivel ring 7 also rotates relatively.
Furthermore, a plurality of sets of guiding grooves 22 are formed in the movable plate 17, and the guiding grooves 22 can be used for guiding water in the cleaning layer 4 and guiding the ice slag scraped by the cleaning scraper 20.
Example two
On the basis of the first embodiment, as shown in fig. 1 to 4 and 9 to 10, the inner wall of the temperature sensing layer 13 is fixedly connected with a thermal deformation metal 25, and the middle part of the thermal deformation metal 25 is fixedly connected with one end of the extension rod 6.
As shown in fig. 1-4 and 9-10, a control rod 26 is fixedly connected to the middle of the thermal deformation metal 25, and a support rod 24 matched with the control rod 26 is elastically embedded in the inner wall of the temperature sensing layer 13 through a spring 27.
When in use, because the liquid sensing temperature expansion is adopted in the first embodiment, the deformation of the liquid sensing temperature expansion is a linear process, and most of the liquid sensing temperature expansion is humidity control at a specified temperature under a high-temperature and high-humidity working condition, at the moment, the liquid sensing temperature control has certain limitation and is difficult to adjust along with the working condition temperature, the thermal deformation metal 25 is embedded in the temperature sensing layer 13, the through hole 23 can be formed in the middle of the temperature sensing layer 13, the through hole 23 is communicated with the temperature sensing cavity 12, so that the heat exchange effect in the temperature sensing cavity 12 is improved, the thermal deformation metal 25 can be specifically made of a thermal bimetal material which generates corresponding arc deformation along with the temperature rise, the control rod 26 is fixedly connected to the thermal deformation metal 25, the control rod 26 is matched with the abutting rod 24, when the temperature rise in the temperature sensing cavity 12, the thermal deformation metal 25 generates deformation, at the moment, the abutting rod 24 abuts against the control rod 26 under the action of the spring 27, the deformation of the thermal deformation metal 25 is limited, along with the temperature rise, when the thermal deformation metal 25 deformation force is greater than the resistance of the resisting rod 24, the control rod 26 penetrates the resisting rod 24 to control the extension rod 6 to move, and the elastic stroke of the corresponding activity adjusting device control spring 27 can be arranged at the end, deviating from the resisting rod 24, of the spring 27, so that the elastic force of the resisting rod 24 is controlled, and the stroke threshold value of the thermal deformation metal 25 is controlled.
EXAMPLE III
On the basis of the second embodiment, as shown in fig. 1 to 11, the supporting rod 24 is movably embedded inside the temperature sensing layer 13, a movable groove adapted to the supporting rod 24 is formed in the temperature sensing layer 13, a spring 27 is fixedly connected to one end of the supporting rod 24, an adjusting plate 29 is elastically connected to one end of the spring 27 away from the supporting rod 24, the adjusting plate 29 is slidably connected to the inside of the movable groove through a limit slider, the limit slider is used for limiting the adjusting plate to rotate in the movable groove, an adjusting knob 28 is engaged in the middle of the adjusting plate 29, the adjusting knob 28 is rotatably connected to the temperature sensing layer 13, the position of the adjusting plate 29 inside the movable groove can be controlled by rotating the adjusting knob 28, and further the elastic stroke of the spring 27 is controlled, so that the magnitude of the elastic force of the supporting rod 24 is controlled, thereby controlling the stroke threshold value of the thermal deformation metal 25, and enabling the device to be adapted to various different temperature threshold working conditions.
The working principle is as follows: the cleaning device 2 is driven by the extension rod 6 driven by the driving rod 5 to reciprocate in the sliding groove 8, the driving rod 5 can be controlled by an electric push rod, the sliding groove 8 is positioned at the inner side of the window 3, the temperature in the box body is sensed by the temperature sensing device and the extension rod 6 is controlled along with the temperature, the cleaning layer 4 is attached to the surface of the window 3 by the engagement of the thread groove 11 formed on the side end surface of the extension rod 6 and the nut 9 and controlling the extension rod 6 to drive the rotating ring 7 to rotate, so that the rotating ring 7 rotates along with the temperature rise when the temperature rises, the cleaning layer 4 is attached to the surface of the window 3, the cleaning device 2 is cleaned in an auxiliary way by the cleaning layer 4 at high temperature, the cleaning layer 4 can effectively clean water mist generated by high temperature in the box in the moving process, and anhydrous impression traces remain, when the temperature in the box body is low, and the temperature sensing device controls the movement of the extension rod 6 along with the temperature rise, the rotating ring 7 is rotated, the cleaning device 2 is contacted with the window 3 at the moment, the surface of the window 3 can be effectively cleaned through the cleaning device 2 under the driving of the driving rod 5, the condition of high-temperature vapor or low-temperature frost and the like is fully avoided, the visual effect of the window 3 is reduced, meanwhile, the temperature influence of electric heating on a test sample near the window 3 is also avoided, the test result and the equipment control precision are influenced, meanwhile, the environment box is used for simulating different environment working conditions mainly by controlling the temperature of gas in the box body, the common working conditions mainly comprise low-temperature simulation and high-temperature high-humidity reliable working conditions, the gas in the box enters the temperature sensing cavity 12 through the air gap 10, the temperature is transmitted into the sealing cavity 15 through the temperature sensing layer 13, the inside of the sealing cavity 15 is filled with temperature sensing media, the temperature sensing media particularly liquid with higher expansion coefficient, and the sensing media expand or contract along with the high-low temperature change in the box body, when the pressure in the sealed cavity 15 changes along with the expansion and contraction of the temperature sensing medium in the sealed cavity 15, the extension rod 6 is further pushed to move relatively, the rotating ring 7 is further driven to rotate by the movement of the extension rod 6, the attachment position of the cleaning device 2 and the window 3 changes along with the change of the temperature in the box, so that the optimal cleaning effect on the window 3 is achieved according to the working conditions at different temperatures, and when the temperature in the box is sensed by the temperature sensing device in the sealed cavity 15, the extension rod 6 drives the inclined plane bulge 19 to move downwards synchronously, and as the convex rod 18 is attached to the inclined plane bulge 19, the inclined plane bulge 19 has an inclined plane, the inclined plane bulge 19 presses the convex rod 18, the movable plate 17 is pushed to move, the cross section of the movable plate 17 is particularly arc-shaped, the cleaning scrapers 20 are arranged at two ends of the arc, and the cleaning scrapers 20 are arranged inside the air gap 10, when the temperature in the environment box body is lower, the inclined plane bulge 19 pushes the movable plate 17 to move, meanwhile, the cleaning scraper 20 extends out from the inside of the air gap 10, and the rotating ring 7 rotates under the driving of the extension rod 6, so that the air gap 10 is attached to the surface of the window 3, at the moment, the cleaning scraper 20 can effectively improve the cleaning effect on the surface of the window 3, the problem that the cleaning effect is poor in a low-temperature cleaning device is solved, in addition, the movable plate 17 is further attached to the cleaning layer 4, redundant moisture in the cleaning layer 4 can be discharged in the moving process of the movable plate 17, freezing at the low temperature is avoided, meanwhile, the cleaning scraper 20 is elastically connected through the elastic rotating shaft 21, along with the continuous reduction of the temperature, the cleaning scraper 20 is abutted to the surface of the window 3, the rotating amount of the rotating ring 7 is increased, the rotating angle of the elastic rotating shaft 21 is increased, and accordingly, the elasticity of the cleaning scraper 20 is gradually increased, thereby improving the cleaning effect of the window 3 at low temperature, when the temperature rises, in order to avoid scratches and the like caused by frequent scraping of the cleaning scraper 20 on the window 3, the extension rod 6 moves upwards along with the rise of the temperature, so that the cleaning scraper 20 withdraws into the air gap 10, the rotating ring 7 rotates relatively, further, because the liquid induction temperature expansion is adopted, the deformation is a linear process, under the high-temperature and high-humidity working condition, the humidity control is mostly under the designated temperature, at the moment, the liquid induction temperature control has certain limitation and is difficult to adjust along with the working condition temperature, the thermal deformation metal 25 is embedded in the temperature sensing layer 13, the middle part of the temperature sensing layer 13 can be provided with a through hole 23, the through hole 23 is communicated with the temperature sensing cavity 12, the heat exchange effect in the temperature sensing cavity 12 is improved, the thermal deformation metal 25 can particularly adopt a thermal bimetal material, and the material can generate corresponding arc deformation along with the rise of the temperature, and at thermal deformation metal 25 fixedly connected with control lever 26, control lever 26 and resisting rod 24 looks adaptation, when the temperature rose in the temperature sensing chamber 12, thermal deformation metal 25 produced deformation, it is at this moment that resisting rod 24 withstood control lever 26 under the effect of spring 27, the deformation of restriction thermal deformation metal 25, along with the temperature rise, thermal deformation metal 25 deformation force was greater than when resisting rod 24's resistance, control lever 26 then passed resisting rod 24 and controlled extension bar 6 and removed, and can set up the corresponding activity adjusting device control spring 27's elastic stroke in the one end that spring 27 deviates from resisting rod 24, thereby control the elasticity size of resisting rod 24, thereby control the stroke threshold value of thermal deformation metal 25.
Claims (1)
1. The utility model provides an environmental test case of control high low temperature reversal, includes box and chamber door, its characterized in that: a window is embedded in the middle of the box door, a sliding groove is arranged at the edge of the window, a driving rod is fixedly arranged at one end in the sliding groove, an extension rod is movably connected at one end of the driving rod, which is far away from the chute, the outer end surface of the extension rod is sleeved with a cleaning device, the cleaning device is attached to the surface of the window, a temperature sensing device for driving the extension rod to move is arranged in the cleaning device, a plurality of cleaning layers are fixedly embedded on the end face of the side of the cleaning device, rotating rings are fixedly connected with the two ends of the cleaning device, a nut is elastically embedded in the middle of the rotating ring, a thread groove matched with the nut is formed in the end face of the extending rod, the temperature sensing device comprises a temperature sensing cavity and a temperature sensing layer, the temperature sensing layer is arranged inside the cleaning device, two ends of the temperature sensing layer are rotationally connected with the cleaning device, and a temperature sensing cavity is arranged between the temperature sensing layer and the cleaning device;
a partition plate is embedded in the middle of the temperature sensing layer, the extension rod is movably connected inside the temperature sensing layer, a sealing cavity is formed between the extension rod and the temperature sensing layer, a temperature sensing medium is filled in the sealing cavity, an air gap is formed in the side end face of the cleaning device, and the air gap is communicated with the temperature sensing cavity;
the side end face of the extension rod is fixedly connected with an inclined plane bulge, the side wall of the temperature sensing layer is provided with a groove matched with the inclined plane bulge, a movable plate is movably arranged in the temperature sensing cavity, two ends of the movable plate are connected with a rotating ring in a sliding manner, and the inner wall of the movable plate is fixedly connected with a convex rod jointed with the inclined plane bulge;
two ends of the movable plate are elastically connected with cleaning scrapers through elastic rotating shafts;
the clearance scraper blade sets up in the inside of air gap, just the one end that the fly leaf deviates from the protruding pole is laminated with the clearance layer mutually.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210068781.2A CN114100701B (en) | 2022-01-21 | 2022-01-21 | Environmental test chamber for controlling high-low temperature alternation |
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|---|---|---|---|
| CN202210068781.2A CN114100701B (en) | 2022-01-21 | 2022-01-21 | Environmental test chamber for controlling high-low temperature alternation |
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| CN114100701A CN114100701A (en) | 2022-03-01 |
| CN114100701B true CN114100701B (en) | 2022-09-09 |
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| CN213644168U (en) * | 2020-10-20 | 2021-07-09 | 苏州国测检测科技有限公司 | High-low temperature damp-heat test box |
| CN213699924U (en) * | 2020-11-13 | 2021-07-16 | 东莞市赛思检测设备有限公司 | High-low temperature alternating damp-heat test box |
| CN214553609U (en) * | 2020-12-16 | 2021-11-02 | 重庆艾世特检测技术服务有限公司 | High-low temperature alternating damp-heat test box with window defogging structure |
| CN215429108U (en) * | 2021-07-28 | 2022-01-07 | 南京承泓电气有限公司 | High-low temperature alternating damp-heat test box convenient to observe |
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