CN115999656A - Quick temperature change test box with automatic defrosting device - Google Patents
Quick temperature change test box with automatic defrosting device Download PDFInfo
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- CN115999656A CN115999656A CN202310110741.4A CN202310110741A CN115999656A CN 115999656 A CN115999656 A CN 115999656A CN 202310110741 A CN202310110741 A CN 202310110741A CN 115999656 A CN115999656 A CN 115999656A
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- 238000012360 testing method Methods 0.000 title claims abstract description 148
- 238000010257 thawing Methods 0.000 title claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 161
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 80
- 238000001179 sorption measurement Methods 0.000 claims abstract description 23
- 239000011261 inert gas Substances 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 17
- 238000007790 scraping Methods 0.000 claims description 15
- 229910052742 iron Inorganic materials 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 239000002808 molecular sieve Substances 0.000 claims description 3
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 3
- 229910001873 dinitrogen Inorganic materials 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 abstract 1
- 239000003570 air Substances 0.000 description 66
- 238000005192 partition Methods 0.000 description 9
- 238000004891 communication Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 241001274961 Rubus repens Species 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to the field of quick temperature change test boxes, in particular to a quick temperature change test box with an automatic defrosting device, which comprises: the rapid temperature change test box body is characterized in that a control panel is arranged at the top of one side of the front surface of the rapid temperature change test box body; through setting up air replacement mechanism, before the experiment, utilize inert gas injection subassembly to replace quick temperature change test box inner chamber's air for the inert gas that does not contain moisture, open the intercommunication of first connecting pipe and nitrogen bottle through the solenoid valve, the nitrogen gas of nitrogen bottle inner chamber is through the intercommunication of first connecting pipe and inflation cover with nitrogen injection quick temperature change test box inner chamber's test area, the cooperation of rethread nitrogen production subassembly is absorbed quick temperature change test box inside replacement's air, utilize pressure swing adsorption nitrogen production technique to make nitrogen to the air of replacement, make it can last to fill nitrogen to quick temperature change test box inside test area.
Description
Technical Field
The invention relates to the field of quick temperature change test boxes, in particular to a quick temperature change test box with an automatic defrosting device.
Background
The rapid temperature change test box is suitable for testing various performance indexes of aerospace products, information electronic instruments and meters, materials, electricians, electronic products and various electronic components under the condition of rapid temperature change;
at present, the rapid temperature change test is mainly performed in a rapid temperature change test box, when the environmental temperature in the rapid temperature change test box is increased, the temperature of the product surface is lower than the environmental temperature due to thermal inertia, when the hot and humid ambient air meets the product surface lower than the dew point, water vapor is condensed on the product surface to form dew drops, and if the product is sealed, when the environmental temperature in the rapid temperature change test box is reduced, the temperature of the inner wall of the product shell is faster than the temperature of the air in the cavity, the hot and humid air in the cavity is condensed into dew drops on the inner wall of the product shell, if the temperature of the product shell is too low, frost is formed, the dew and the frost are fatal to the product, the service life of the product is reduced, the test precision is affected, and the product is damaged due to heavy weight, so that the dew frost is required to be avoided in the temperature rise process of the product.
Therefore, a rapid temperature change test chamber with an automatic defrosting device is proposed to solve the above problems.
Disclosure of Invention
The invention realizes the aim through the following technical scheme, and the rapid temperature change test box with the automatic defrosting device comprises: the rapid temperature change test box comprises a rapid temperature change test box body, wherein a control panel is arranged at the top of one side of the front surface of the rapid temperature change test box body, a refrigerating system is arranged at one side of the bottom of the inner cavity of the rapid temperature change test box body, a heating system is arranged at one side of the inner cavity of the rapid temperature change test box body, a humidity sensor is arranged at the other side of the inner cavity of the rapid temperature change test box body, and the output end of the humidity sensor is connected with the input end of the control panel; the air replacement mechanism is used for replacing the moisture in the rapid temperature change test box body and is arranged in the inner cavity of the rapid temperature change test box body; the air replacement mechanism comprises an inert gas injection assembly and a nitrogen production assembly, wherein the inert gas injection assembly for injecting inert gas into the rapid temperature change test box body to replace the gas is arranged on the other side of the bottom of the inner cavity of the rapid temperature change test box body, and the nitrogen production assembly for producing nitrogen for air in the rapid temperature change test box body is arranged on the top of the inner cavity of the rapid temperature change test box body; the scraping mechanism is used for being observed by a worker and is arranged on the front surface of the rapid temperature change test box body.
Preferably, the inert gas injection assembly comprises two nitrogen cylinders arranged on the other side of the bottom of the inner cavity of the rapid temperature change test box, the top of each nitrogen cylinder is communicated with a first connecting pipe, one end of each first connecting pipe is communicated with an inflatable cover, each inflatable cover is arranged on the surface of a side plate inside the rapid temperature change test box in a penetrating mode, one side of each first connecting pipe is provided with a pressure gauge, air in a test area inside the rapid temperature change test box can be replaced before the test, and the situation that moisture and frosting occur during the detection are avoided.
Preferably, the nitrogen making assembly comprises a baffle plate fixedly arranged at the top of the inner cavity of the rapid temperature change test box body, a pressure swing adsorption nitrogen making machine is arranged at one side of the top of the inner cavity of the rapid temperature change test box body and positioned at the top of the baffle plate, a molecular sieve is arranged in the inner cavity of the pressure swing adsorption nitrogen making machine, the top and the bottom of the pressure swing adsorption nitrogen making machine are both communicated with a second connecting pipe, the second connecting pipe positioned at the top of the pressure swing adsorption nitrogen making machine penetrates through the rapid temperature change test box body and extends to the top of the rapid temperature change test box body, an air compressor is arranged at one side of the top of the baffle plate, a filter is arranged at the top of the baffle plate and positioned at the rear side of the air compressor, the utility model discloses a quick temperature change test box, including air compressor, pipeline, filter, air compressor's inlet end, circulating jet mechanism, air compressor's inlet end intercommunication has the hose, the bottom intercommunication of hose has the suction mechanism, the surface of baffle runs through installs circulating jet mechanism, can make nitrogen to the air in the quick temperature change test box test zone, the purpose that utilizes inside air, air compressor's inlet end runs through the baffle and extends to one side of baffle bottom, air compressor's inlet end intercommunication has the hose, the bottom intercommunication of hose has the suction mechanism, the output of filter passes through the pipeline and is located the second connecting tube intercommunication of pressure swing adsorption nitrogen making machine bottom, one side intercommunication of pressure swing adsorption nitrogen making machine has the nitrogen exhaust pipe.
Preferably, the circulation jet-propelled mechanism is including running through the carousel of installing in the baffle surface, the carousel is connected for rotating with the baffle, the mount pad is installed in the inner chamber of carousel, the bottom cover of mount pad lateral wall is equipped with annular rack, circulation fan is installed in the surface penetration of mount pad, circulation fan's department of airing exhaust is located the bottom of mount pad, first motor is installed to the opposite side at baffle top, the output of first motor runs through the baffle and extends to the bottom of baffle, the output fixedly connected with gear of first motor, the gear is connected with annular rack meshing, can reinject the test area of quick temperature change test box to the nitrogen gas of output, carries out better replacement to the inside air of test area.
Preferably, the air suction mechanism comprises an air suction cover communicated with the bottom of the hose, an elastic iron block is installed at the front end of the air suction cover in a penetrating mode, two sliding grooves are formed in one side of the inner cavity of the rapid temperature change test box body, a sliding block is slidably installed in the inner cavity of the sliding groove, a high-strength reset spring is fixedly connected to the bottom of the sliding block, and one side of the sliding block is fixedly connected with the air suction cover.
Preferably, the scraping mechanism comprises a sealing door which is rotatably arranged on one side of the front surface of the rapid temperature change test box body through a hinge, a window is arranged on the surface of the sealing door, mounting plates are fixedly connected to two sides of the rear surface of the sealing door, a screw rod is rotatably arranged on the surface of the mounting plates through a bearing, a driving belt pulley is fixedly connected to the top of the screw rod, a second motor is fixedly arranged on the top of one side of the rear surface of the sealing door, the output end of the second motor is fixedly connected with the top of the driving belt pulley, a thread bush is connected to the top thread of the screw rod surface, a scraper is fixedly connected to one side of the thread bush and is attached to the window, and the frosting surface of the window can be scraped when the window frosts, so that the condition of affecting the observation of workers is avoided.
Preferably, the other inside wall fixedly connected with slide bar of mounting panel, the surface sliding connection at slide bar top has the sliding sleeve, one side of sliding sleeve and scraper blade are kept away from the one side fixed connection of thread bush.
Preferably, one the surface of mounting panel just is located the rear side of lead screw and rotates through the bearing and install reciprocating screw, the top fixedly connected with driven pulley of reciprocating screw, driven pulley passes through belt drive with driving pulley and is connected, the movable block is installed at the top on reciprocating screw surface, one side fixedly connected with magnetic path of movable block can cooperate with the elasticity iron plate, drives the suction hood and carries out the purpose of synchronous up-and-down movement.
Preferably, one side of quick temperature change test box body is communicated with an exhaust pipe, and an automatic pressure release valve is arranged on the surface of the exhaust pipe, so that automatic exhaust can be realized when the pressure of a test area of the quick temperature change test box body is too high, and explosion caused by the too high pressure in the quick temperature change test box body is avoided.
Preferably, a movable door is rotatably installed on one side of the bottom of the front surface of the rapid temperature change test box body through a hinge, and the movable door for protecting the nitrogen cylinder is installed on one side of the low bottom of the inner cavity of the rapid temperature change test box body.
The beneficial effects of the invention are as follows:
1. before a test, the air in the inner cavity of the rapid temperature change test box is replaced by the inert gas without moisture by using the inert gas injection assembly, the first connecting pipe is communicated with the nitrogen cylinder through the electromagnetic valve, the nitrogen in the inner cavity of the nitrogen cylinder is injected into a test area in the inner cavity of the rapid temperature change test box through the communication between the first connecting pipe and the air charging cover, the replaced air in the inner cavity of the rapid temperature change test box is sucked by the cooperation of the nitrogen making assembly, and the nitrogen making technology is utilized to make nitrogen for the replaced air, so that the nitrogen can be continuously charged into the test area in the inner cavity of the rapid temperature change test box, the aim of replacing the air in the inner cavity of the rapid temperature change test box and dehumidifying the inner cavity of the rapid temperature change test box is fulfilled, and the phenomenon that products are frosted during the rapid temperature change test is avoided;
2. through setting up scraping mechanism, if when detecting, the staff opens the inner chamber that the sealed door made outside air get into quick temperature change test box, and the second motor drives initiative pulley and lead screw and rotates, drives the scraper blade through the threaded connection of lead screw and thread bush and reciprocates, strikes off the frosting face of window, has played and has avoided leading to the window to appear frosting when outside air gets into the inner chamber of quick temperature change test box, influences the staff to look over the condition of test piece and appears.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of an inert gas injection assembly according to the present invention;
FIG. 4 is a schematic view of a partial structure of a nitrogen making assembly according to the present invention;
FIG. 5 is a schematic view of a circulation jet mechanism according to the present invention;
FIG. 6 is a schematic diagram of the structure of the suction mechanism of the present invention;
FIG. 7 is a schematic view of an open structure of the sealing door of the present invention;
fig. 8 is a schematic structural view of the scraping mechanism of the present invention.
In the figure: 1. a rapid temperature change test box body; 2. a control panel; 3. a refrigeration system; 4. a heating system; 5. an air displacement mechanism; 51. an inert gas injection assembly; 511. a nitrogen cylinder; 512. a first connecting pipe; 513. an inflatable hood; 514. an electromagnetic valve; 515. a pressure gauge; 52. a nitrogen making assembly; 521. a partition plate; 522. a pressure swing adsorption nitrogen making machine; 523. a second connecting pipe; 524. an air compressor; 525. a filter; 526. a nitrogen discharge pipe; 527. a hose; 528. an air suction mechanism; 5281. an air suction cover; 5282. an elastic iron block; 5283. a chute; 5284. a slide block; 5285. a high-strength return spring; 529. a circulation air-jet mechanism; 5291. a turntable; 5292. a mounting base; 5293. an annular rack; 5294. a circulating fan; 5295. a first motor; 5296. a gear; 6. a scraping mechanism; 61. sealing the door; 62. a window; 63. a mounting plate; 64. a screw rod; 65. an active belt pulley; 66. a second motor; 67. a thread sleeve; 68. a scraper; 69. a slide bar; 610. a sliding sleeve; 611. a reciprocating screw; 612. a driven belt pulley; 613. a moving block; 614. a magnetic block; 7. an exhaust pipe; 8. an automatic pressure release valve; 9. a movable door.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The specific implementation method comprises the following steps: as shown in fig. 1-8, a rapid temperature change test chamber with an automatic defrost device, comprising: the rapid temperature change test box body 1, wherein a control panel 2 is arranged at the top of one side of the front surface of the rapid temperature change test box body 1, a refrigerating system 3 is arranged at one side of the bottom of the inner cavity of the rapid temperature change test box body 1, a heating system 4 is arranged at one side of the inner cavity of the rapid temperature change test box body 1, a humidity sensor is arranged at the other side of the inner cavity of the rapid temperature change test box body 1, and the output end of the humidity sensor is connected with the input end of the control panel 2; the air replacement mechanism 5 is used for replacing the moisture in the rapid temperature change test box 1, and the air replacement mechanism 5 is arranged in the inner cavity of the rapid temperature change test box 1; the air replacement mechanism 5 comprises an inert gas injection assembly 51 and a nitrogen making assembly 52, wherein the inert gas injection assembly 51 for injecting inert gas into the interior of the rapid temperature change test box 1 to replace the gas is arranged on the other side of the bottom of the inner cavity of the rapid temperature change test box 1, and the nitrogen making assembly 52 for making nitrogen from the air in the rapid temperature change test box 1 is arranged on the top of the inner cavity of the rapid temperature change test box 1; the scraping mechanism 6 is used for a worker to observe, and the scraping mechanism 6 is arranged on the front surface of the rapid temperature change test box body 1; one side of the rapid temperature change test box body 1 is communicated with an exhaust pipe 7, and an automatic pressure relief valve 8 is arranged on the surface of the exhaust pipe 7; one side of the bottom of the front surface of the rapid temperature change test box body 1 is rotatably provided with a movable door 9 through a hinge, and the movable door 9 for protecting the nitrogen bottle 511 is arranged on one side of the low bottom of the inner cavity of the rapid temperature change test box body 1.
As shown in fig. 1-8, the inert gas injection assembly 51 comprises two nitrogen cylinders 511 installed on the other side of the bottom of the inner cavity of the rapid temperature change test box body 1, the tops of the two nitrogen cylinders 511 are both communicated with a first connecting pipe 512, one end of the first connecting pipe 512 is communicated with an inflatable cover 513, the inflatable cover 513 penetrates through the surface of a side plate installed inside the rapid temperature change test box body 1, one side of the first connecting pipe 512 is provided with a pressure gauge 515, the first connecting pipe 512 is opened through an electromagnetic valve 514 to be communicated with the nitrogen cylinders 511, and nitrogen in the inner cavity of the nitrogen cylinders 511 is injected into a test area of the inner cavity of the rapid temperature change test box body 1 through the communication between the first connecting pipe 512 and the inflatable cover 513; the nitrogen making assembly 52 comprises a baffle 521 fixedly arranged at the top of the inner cavity of the rapid temperature change test box body 1, a pressure swing adsorption nitrogen making machine 522 is arranged at one side of the top of the inner cavity of the rapid temperature change test box body 1 and positioned at the top of the baffle 521, a molecular sieve is arranged in the inner cavity of the pressure swing adsorption nitrogen making machine 522, the top and the bottom of the pressure swing adsorption nitrogen making machine 522 are communicated with a second connecting pipe 523, the second connecting pipe 523 positioned at the top of the pressure swing adsorption nitrogen making machine 522 penetrates through the rapid temperature change test box body 1 and extends to the top of the rapid temperature change test box body 1, an air compressor 524 is arranged at one side of the top of the baffle 521, a filter 525 is arranged at the top of the baffle 521 and positioned at the rear side of the air compressor 524, the air outlet end of the air compressor 524 is communicated with the input end of the filter 525 through a pipeline, the output end of the filter 525 is communicated with the second connecting pipe 523 positioned at the bottom of the pressure swing adsorption nitrogen making machine 522 through a pipeline, one side of the pressure swing adsorption nitrogen making machine 522 is communicated with a nitrogen discharging pipe 526, the air inlet end of the air compressor 524 penetrates through the partition board 521 and extends to one side of the bottom of the partition board 521, the air inlet end of the air compressor 524 is communicated with a hose 527, the bottom of the hose 527 is communicated with an air suction mechanism 528, a circulating air injection mechanism 529 is installed on the surface of the partition board 521 in a penetrating manner, the air compressor 524 works to generate suction force, air in a test area of the rapid temperature change test box 1 is sucked through the communication of the hose 527 and the air suction mechanism 528, the sucked air enters the inner cavity of the filter 525 after being compressed by the air compressor 524, moisture and other impurities in the compressed air are removed, the filtered air enters the inner cavity of the pressure swing adsorption nitrogen making machine 522 for pressure swing adsorption nitrogen production, the nitrogen is continuously discharged through the nitrogen discharging pipe 526, and when the nitrogen is continuously produced, the circulating air injection mechanism 529 sucks the nitrogen at the top and continuously injects the nitrogen into the test area of the rapid temperature change test box body 1; the circulation jet mechanism 529 comprises a turntable 5291 which is installed on the surface of the partition plate 521 in a penetrating mode, the turntable 5291 is in rotary connection with the partition plate 521, an installation seat 5293 is installed in a penetrating mode in an inner cavity of the turntable 5291, an annular rack 5293 is sleeved on the bottom of the outer side wall of the installation seat 5292, a circulating fan 5294 is installed on the surface of the installation seat 5292 in a penetrating mode, an exhaust position of the circulating fan 5294 is located at the bottom of the installation seat 5292, a first motor 5295 is installed on the other side of the top of the partition plate 521, an output end of the first motor 5295 penetrates through the partition plate 521 and extends to the bottom of the partition plate 521, a gear 5296 is fixedly connected with the output end of the first motor 5296, the gear 5296 is in meshed connection with the annular rack 5293, the first motor 5296 drives the gear 5294 to rotate, and the installation seat 5292 is driven to rotate with the circulating fan 5294 through meshed connection of the gear 5296 and the annular rack 5294, and the blowing area of the circulating fan 5294 is increased.
As shown in fig. 1-8, the scraping mechanism 6 comprises a sealing door 61 rotatably installed on one side of the front surface of the rapid temperature change test box body 1 through a hinge, a window 62 is formed on the surface of the sealing door 61, mounting plates 63 are fixedly connected to two sides of the rear surface of the sealing door 61, a screw rod 64 is rotatably installed on the surface of one mounting plate 63 through a bearing, a driving belt pulley 65 is fixedly connected to the top of the screw rod 64, a second motor 66 is fixedly installed on the top of one side of the rear surface of the sealing door 61, the output end of the second motor 66 is fixedly connected with the top of the driving belt pulley 65, a threaded sleeve 67 is connected to the top of the surface of the screw rod 64 in a threaded manner, a scraping plate 68 is attached to the window 62, the second motor 66 drives the driving belt pulley 65 to rotate with the screw rod 64, and the scraping plate 68 is driven to move up and down through the threaded connection of the screw rod 64 and the threaded sleeve 67, and frosted surfaces of the window 62 are scraped; the inner side wall of the other mounting plate 63 is fixedly connected with a sliding rod 69, the surface of the top of the sliding rod 69 is connected with a sliding sleeve 610 in a sliding manner, and one side of the sliding sleeve 610 is fixedly connected with one side of the scraping plate 68 away from the thread bush 67; the surface of one mounting plate 63 and the rear side of the screw rod 64 are rotatably provided with a reciprocating screw rod 611 through a bearing, the top of the reciprocating screw rod 611 is fixedly connected with a driven belt pulley 612, the driven belt pulley 612 is in transmission connection with a driving belt pulley 65 through a belt, the top of the surface of the reciprocating screw rod 611 is provided with a moving block 613, and one side of the moving block 613 is fixedly connected with a magnetic block 614; the suction mechanism 528 comprises a suction cover 5281 communicated with the bottom of a hose 527, an elastic iron block 5282 is installed at the front end of the suction cover 5281 in a penetrating way, two sliding grooves 5283 are formed in one side of the inner cavity of the rapid temperature change test box body 1, a sliding block 5284 is installed in the inner cavity of the sliding groove 5283 in a sliding way, a high-strength reset spring 5285 is fixedly connected to the bottom of the sliding block 5284, one side of the sliding block 5284 is fixedly connected with the suction cover 5281, when the sealing door 61 is closed, the magnetic block 614 and the elastic iron block 5282 generate suction force, the magnetic block 614 and the elastic iron block 5282 are magnetically attracted together, and when the driving belt pulley 65 rotates, the driven belt pulley 612 is driven to rotate through the transmission connection of a belt, the driven belt pulley 612 drives the reciprocating screw 611 to rotate (the reciprocating screw is a screw capable of enabling the sliding block to realize reciprocating motion on the premise of not changing the rotation direction of the main shaft, the reciprocating screw is in the form of two thread grooves with the same thread pitch and opposite rotation directions, two ends of the reciprocating screw are connected through a transition curve, the side surface of the thread groove pushes the sliding block arranged in the thread groove to axially reciprocate through the rotation of the screw), the moving block 613 and the magnetic block 614 are driven to move up and down, and the elastic iron block 5282 and the air suction cover 5281 are driven to move up and down.
Before a test, the invention opens the communication between the first connecting pipe 512 and the nitrogen cylinder 511 through the electromagnetic valve 514, nitrogen in the inner cavity of the nitrogen cylinder 511 is injected into a test area in the inner cavity of the rapid temperature change test box body 1 through the communication between the first connecting pipe 512 and the inflation cover 513, the air in the rapid temperature change test box body 1 rises through the continuous injection of the nitrogen, meanwhile, the air compressor 524 works to generate suction force, the air in the test area of the rapid temperature change test box body 1 is sucked through the communication between the hose 527 and the suction mechanism 528, the sucked air enters the inner cavity of the filter 525 after being compressed by the air compressor 524, moisture and other impurities in the compressed air are removed, the filtered air enters the inner cavity of the pressure swing adsorption nitrogen generator 522 for pressure swing adsorption to produce nitrogen, the nitrogen is continuously discharged through the nitrogen discharge pipe 526, the circulating fan 5294 sucks the top nitrogen to be continuously injected into the test area of the rapid temperature change test box body 1 when the nitrogen is continuously produced, the air in the rapid temperature change test box body 1 is continuously replaced, and the first motor 5295 drives the gear 5296 to rotate through the circulating fan 5296 to be in a circulating fan 5294, and the circulating fan 5294 is uniformly meshed with a circular fan through a ring-shaped air carrier to be arranged on a blowing fan, and the surface of the circulating fan 5294 is uniformly meshed with the air carrier to be uniformly rotated;
if during detection, when the sealing door 61 is opened by a worker to enable outside air to enter the inner cavity of the rapid temperature change test box body 1, the window 62 is likely to frost, at this time, the second motor 66 drives the driving belt pulley 65 and the screw rod 64 to rotate, the scraping plate 68 is driven to move up and down through threaded connection of the screw rod 64 and the threaded sleeve 67, the frosted surface of the window 62 is scraped, meanwhile, when the sealing door 61 is closed, the magnetic block 614 and the elastic iron block 5282 generate suction force, the magnetic block 614 and the elastic iron block 5282 are magnetically attracted together, when the driving belt pulley 65 rotates, the driven belt pulley 612 is driven to rotate through transmission connection of a belt, the driven belt pulley 612 drives the reciprocating screw 611 to rotate, the moving block 613 and the magnetic block 614 are driven to move up and down, and accordingly the elastic iron block 5282 and the suction cover 5281 are driven to move up and down, and the suction area of the suction cover 5281 to air is increased.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. A rapid temperature change test chamber with an automatic defrosting device, comprising:
the rapid temperature change test box body (1), a control panel (2) is arranged at the top of one side of the front surface of the rapid temperature change test box body (1), a refrigerating system (3) is arranged at one side of the bottom of the inner cavity of the rapid temperature change test box body (1), a heating system (4) is arranged at one side of the inner cavity of the rapid temperature change test box body (1), a humidity sensor is arranged at the other side of the inner cavity of the rapid temperature change test box body (1), and the output end of the humidity sensor is connected with the input end of the control panel (2);
the air replacement mechanism (5) is used for replacing the moisture in the rapid temperature change test box body (1), and the air replacement mechanism (5) is arranged in the inner cavity of the rapid temperature change test box body (1); wherein, the liquid crystal display device comprises a liquid crystal display device,
the air replacement mechanism (5) comprises an inert gas injection assembly (51) and a nitrogen production assembly (52), wherein the inert gas injection assembly (51) for injecting inert gas into the rapid temperature change test box body (1) to replace the gas is arranged on the other side of the bottom of the inner cavity of the rapid temperature change test box body (1), and the nitrogen production assembly (52) for producing nitrogen for air in the rapid temperature change test box body (1) is arranged on the top of the inner cavity of the rapid temperature change test box body (1);
the scraping mechanism (6) is used for workers to observe, and the scraping mechanism (6) is arranged on the front surface of the rapid temperature change test box body (1).
2. A rapid temperature change test chamber with an automatic defrosting apparatus as defined in claim 1, wherein: the inert gas injection assembly (51) comprises two nitrogen cylinders (511) which are arranged on the other side of the bottom of the inner cavity of the rapid temperature change test box body (1), the tops of the two nitrogen cylinders (511) are respectively communicated with a first connecting pipe (512), one end of each first connecting pipe (512) is communicated with an inflatable cover (513), the inflatable covers (513) are arranged on the surface of a side plate inside the rapid temperature change test box body (1) in a penetrating mode, and a pressure gauge (515) is arranged on one side of each first connecting pipe (512).
3. A rapid temperature change test chamber with an automatic defrosting apparatus as claimed in claim 2, wherein: the nitrogen making assembly (52) comprises a baffle plate (521) fixedly arranged at the top of an inner cavity of the rapid temperature change test box body (1), a pressure swing adsorption nitrogen making machine (522) is arranged at one side of the top of the inner cavity of the rapid temperature change test box body (1) and positioned at the top of the baffle plate (521), a molecular sieve is arranged in the inner cavity of the pressure swing adsorption nitrogen making machine (522), the top and the bottom of the pressure swing adsorption nitrogen making machine (522) are both communicated with a second connecting pipe (523), the second connecting pipe (523) positioned at the top of the pressure swing adsorption nitrogen making machine (522) penetrates through the rapid temperature change test box body (1) and extends to the top of the rapid temperature change test box body (1), an air compressor (524) is arranged at one side of the top of the baffle plate (521), a filter (525) is arranged at the top of the rear side of the baffle plate (521), the air outlet end of the air compressor (524) is communicated with the input end of the filter (525) through a pipeline, the output end of the filter (525) is communicated with the air inlet end of the second connecting pipe (523) positioned at the bottom of the pressure swing adsorption nitrogen making machine (522) through the pipeline, the air inlet end of the air compressor (521) is communicated with the air inlet end of the air compressor (521), the bottom of the hose (527) is communicated with an air suction mechanism (528), and the surface of the baffle plate (521) is provided with a circulating air injection mechanism (529) in a penetrating way.
4. A rapid temperature change test chamber with an automatic defrosting apparatus as set forth in claim 3 wherein: the utility model provides a circulation jet mechanism (5291), including running through carousel (5291) of installing in baffle (521) surface, carousel (5291) is rotationally connected with baffle (521), the inner chamber of carousel (5291) runs through and installs mount pad (5292), the bottom cover of mount pad (5292) lateral wall is equipped with annular rack (5293), circulation fan (5294) are installed in the surface of mount pad (5292) running through, the department of airing exhaust of circulation fan (5294) is located the bottom of mount pad (5292), first motor (5295) are installed to the opposite side at baffle (521) top, the output of first motor (5295) runs through baffle (521) and extends to the bottom of baffle (521), the output fixedly connected with gear (5296) of first motor (5295), gear (5296) are connected with annular rack (5293) meshing.
5. A rapid temperature change test chamber with an automatic defrosting apparatus as set forth in claim 3 wherein: the utility model provides a quick temperature change test box, including hose (527) are used to test, suction mechanism (528) is including communicating suction hood (5281) in hose (527) bottom, elastic iron piece (5282) are installed in the front end penetration of suction hood (5281), two spouts (5283) have been seted up to one side of quick temperature change test box (1) inner chamber, the inner chamber slidable mounting of spout (5283) has slider (5284), the bottom fixedly connected with high-strength reset spring (5285) of slider (5284), one side and suction hood (5281) fixed connection of slider (5284).
6. A rapid temperature change test chamber with an automatic defrosting apparatus as defined in claim 1, wherein: the utility model provides a scraper blade (68) of scraping mechanism (6), including installing in sealing door (61) of quick temperature change test box (1) front surface one side through the hinge rotation, the surface of sealing door (61) is provided with window (62), the equal fixedly connected with mounting panel (63) in both sides of sealing door (61) rear surface, wherein, one the surface of mounting panel (63) is rotated through the bearing and is installed lead screw (64), the top fixedly connected with initiative belt pulley (65) of lead screw (64), the top fixed mounting of sealing door (61) rear surface one side has second motor (66), the output of second motor (66) and the top fixed connection of initiative belt pulley (65), the top threaded connection of lead screw (64) surface has thread bush (67), one side fixedly connected with scraper blade (68) of thread bush (67), scraper blade (68) are laminated with window (62).
7. A rapid temperature change test chamber with an automatic defrosting apparatus as defined in claim 6, wherein: the other inside wall fixedly connected with slide bar (69) of mounting panel (63), the surface sliding connection at slide bar (69) top has sliding sleeve (610), one side of sliding sleeve (610) and scraper blade (68) keep away from one side fixed connection of screw sleeve (67).
8. A rapid temperature change test chamber with an automatic defrosting apparatus as defined in claim 6, wherein: the surface of mounting panel (63) and be located the rear side of lead screw (64) and rotate through the bearing and install reciprocating screw (611), the top fixedly connected with driven belt pulley (612) of reciprocating screw (611), driven belt pulley (612) are connected through belt drive with initiative belt pulley (65), movable block (613) are installed at the top on reciprocating screw (611) surface, one side fixedly connected with magnet (614) of movable block (613).
9. A rapid temperature change test chamber with an automatic defrosting apparatus as defined in claim 1, wherein: one side of the rapid temperature change test box body (1) is communicated with an exhaust pipe (7), and an automatic pressure relief valve (8) is arranged on the surface of the exhaust pipe (7).
10. A rapid temperature change test chamber with an automatic defrosting apparatus as claimed in claim 2, wherein: a movable door (9) is rotatably arranged on one side of the bottom of the front surface of the rapid temperature change test box body (1) through a hinge, and the movable door (9) for protecting the nitrogen bottle (511) is arranged on one side of the low bottom of the inner cavity of the rapid temperature change test box body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310110741.4A CN115999656A (en) | 2023-02-14 | 2023-02-14 | Quick temperature change test box with automatic defrosting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310110741.4A CN115999656A (en) | 2023-02-14 | 2023-02-14 | Quick temperature change test box with automatic defrosting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115999656A true CN115999656A (en) | 2023-04-25 |
Family
ID=86021573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310110741.4A Withdrawn CN115999656A (en) | 2023-02-14 | 2023-02-14 | Quick temperature change test box with automatic defrosting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115999656A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117007948A (en) * | 2023-10-07 | 2023-11-07 | 江苏昊扬微电子有限公司 | Chip test device |
-
2023
- 2023-02-14 CN CN202310110741.4A patent/CN115999656A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117007948A (en) * | 2023-10-07 | 2023-11-07 | 江苏昊扬微电子有限公司 | Chip test device |
| CN117007948B (en) * | 2023-10-07 | 2023-12-15 | 江苏昊扬微电子有限公司 | Chip test device |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20230425 |
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| WW01 | Invention patent application withdrawn after publication |