CN202221418U - High temperature aging test box - Google Patents
High temperature aging test box Download PDFInfo
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- CN202221418U CN202221418U CN201120339613XU CN201120339613U CN202221418U CN 202221418 U CN202221418 U CN 202221418U CN 201120339613X U CN201120339613X U CN 201120339613XU CN 201120339613 U CN201120339613 U CN 201120339613U CN 202221418 U CN202221418 U CN 202221418U
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Abstract
The utility model discloses a high temperature aging test box which comprises a heating system, an air circulation system and a test area. The air circulation system comprises a circulation fan and a circulation air channel. The heating system comprises a heater, a novel air inlet fan and a novel air outlet fan. An air inlet of the novel air inlet fan is communicated with the circulation air channel of the air circulation system. An air outlet of the novel air outlet fan is communicated with the test area. After a novel air system introduces novel air at lower temperature outside the test box into the test box, the novel air does not directly enter the test area of the test box, while the novel air firstly enters the circulation air channel and is adjusted by the heater (if too much novel air results in lower mixed temperature, the mixed air needs to be heated by the heater) and is fully mixed by the circulation fan, then the air at the target temperature is introduced into the test area of the test box, so that uniform temperature and no larger temperature fluctuation and deviation in the box are guaranteed in the whole test process.
Description
Technical field
The utility model relates to a kind of high-temperature circulation test case, more precisely, relates to a kind of high-temperature circulation test case that more can balance the temperature inside the box.
Background technology
The high-temperature circulation test case is mainly used in provides hot environment, under hot environment, product is carried out burn-in test to satisfy the user.The high-temperature circulation test case produces heat through well heater, makes in the case to heat up, and through inner air circulating system heat is taken in the case, and the temperature inside the box is evenly distributed.In the process of temperature constant, if owing to add that the excessive oven temperature, degree that causes of test product thermal value surpasses desired value in the too much or chamber of heat.In order to address this problem, following dual mode is arranged in traditional high-temperature cabinet:
1. be provided with the interior and outside macropore that is communicated with of a case, when the temperature inside the box raises, must cause the expansion of air in the case, the air of expansion is outwards drained through this through hole, takes away heat simultaneously.The maximum shortcoming of this mode is exactly that in this way hole heat dissipation capacity is less, when the thermal value of product in the case own is big, can't get rid of heat effectively in this way, must cause the temperature inside the box to continue to raise, can't be controlled.In other words, the high-temperature cabinet of this mode can only the athermic product of test itself.
2. VMC is arranged, exhaust system is also arranged.But VMC directly passes through test zone after getting into casing, directly mixes with the hot blast in the test zone then, and unnecessary air is got rid of through exhaust blower.The shortcoming of this mode is, new wind gets into the back from fresh wind port and directly gets into test zone, can cause serious inhomogeneous of the interior temperature of test zone, and the temperature inside the box deviation is big, can not satisfy the requirement of test.
The utility model content
The utility model provides a kind of high-temperature circulation test case in order to solve the problem that exists in the prior art, when the temperature in the case is too high; Can introduce the outer cryogenic gas of chamber; Under the requirement that does not influence test, reduce the temperature inside the box, reach preset temperature value.Guaranteed in the whole test process that the temperature in the case evenly and do not have bigger temperature fluctuation and a deviation.
For realizing above-mentioned purpose, the technical scheme of the utility model is: a kind of high-temperature circulation test case, comprise heating system, air circulating system, test zone, and said air circulating system comprises circulating fan, circulation air path; Said heating system comprises well heater, it is characterized in that: also comprise new air intake machine and newly go out blower fan, the air inlet of said new air intake machine and the circulation air path of air circulating system are communicated with, and said air outlet and the test zone that newly goes out blower fan is communicated with.
The high-temperature circulation test case of the utility model is at the constant temperature test process, if because the thermal value of test product own is bigger; Or other reasons is when causing the temperature inside the box to raise, after VMC is introduced chamber with the new wind of the outer lower temperature of chamber, and direct entering chamber test zone not; But at first get into circulation air path; Regulating (, when causing mixing temperature low, needing well heater) with mixed air heat if new wind is too much through well heater; After fully mixing via circulating fan; To reach the air consistent with target temperature again and send into the chamber test zone, thereby guarantee in the whole test process, the temperature in the case evenly and do not have bigger temperature fluctuation and a deviation.
In order to keep the pressure in the case, after some new wind gets into, exhaust system will be discharged the air suitable with resh air requirement.
Simultaneously, after the chamber test is accomplished, need fast cooling to environment temperature, control system can be opened VMC and exhaust system automatically, a large amount of surrounding airs is got in the case, and discharge through exhaust system, realizes the function of fast cooling with this.
Description of drawings
Fig. 1 shows the front view of the utility model.
Fig. 2 shows the cut-open view of the utility model.
Fig. 3 shows the structural representation of the air channel adjustable plate of the utility model.
Fig. 4 shows the structural representation of the movable regulating plate of the utility model.
Embodiment
Further specify below in conjunction with the embodiment of accompanying drawing the utility model.
Like Fig. 1, shown in Figure 2, the high-temperature circulation test case of the utility model comprises:
Air circulating system: wind circulates in the driving box, strengthens heat transferred, makes interior each regional temperature of case even.Air circulating system comprises circulating fan 1, circulation air path.Wherein circulation air path is divided into air-out air channel 5 and return airway 6 again, and mixed circulating current gets into test zone 7.Wind round-robin mode is the inhomogeneity key factor of decision the temperature inside the box, and the temperature inside the box homogeneity then is to weigh an important factors of the performance of high-temperature circulation test case.
Heating system:, chamber is heated up for chamber provides heat.Heating system comprises well heater 4, and air circulating system in the laggard cartonning of wind heater via 4 heating of flowing through passes to environment in the whole case through recirculating air.
VMC: mainly comprise new air intake machine 2, the circulation air path of its air inlet and air circulating system is communicated with.It mainly acts on is exactly to introduce the lower wind of test box outside temperature, mixes with hot blast in the case, to reach balance the temperature inside the box and the purpose that reduces the temperature inside the box.
Exhaust system: mainly comprise new exhaust blower 3, its air outlet is communicated with test zone.After new wind is introduced in the case, be warranty test case internal pressure balance, get rid of the wind of same amount.
Control system 8: coordinate each funtion part and carry out work, to realize the various functions of high-temperature circulation test case.
The high-temperature circulation test case produces heat through well heater, makes in the case to heat up, and through inner air circulating system heat is taken in the case, and the temperature inside the box is evenly distributed.In the process of temperature constant; The excessive oven temperature, degree that causes of test product thermal value surpasses desired value in the too high or chamber of heat if owing to add; Then open VMC; The normal temperature air that chamber is outer is introduced chamber, and with case in high temperature air go out the purpose that has reached the reduction temperature in the cartonning again after mixing.For guard box internal pressure and atmospheric pressure equilibrium, exhaust system will be got rid of portion of air, and the resh air requirement of introducing with VMC in the air of its eliminating equates.
Like Fig. 3, shown in Figure 4; Between air-out air channel 5 and the test zone, also be respectively equipped with an air channel adjustable plate between test zone and the return airway 6; Said air channel adjustable plate comprises the fixedly air channel plate 11 that has several through holes, and said through hole (wind passage mouth) 11 is matrix form and distributes on fixing air channel plate.The air channel adjustable plate is erected to be arranged in the chamber; The distinguished and admirable mode of this level guarantees on the cross section vertical with wind direction in the test zone wind flow near even, and promptly the wind that comes out of air-out air channel 5 flow into test zone equably through the wind passage mouth on the adjustable plate of air channel.The existence of air channel adjustable plate makes it have a bigger outlet air surface, and wind is driven directly flows through test zone, has shortened temperature and has reached the uniform time.Owing to regulate on the plate of air channel whole outlet air surface all in air-out, the whole return air face of opposite side is all at return air, distinguished and admirablely do not allow to be subject to the test product influence, guarantees that the product local temperature can be not too high.Wherein, near the height of test zone, air quantity is good more in the homogeneity of test zone more for the height of air channel adjustable plate.
Preferably; Said air channel adjustable plate also comprises establishes a plurality of movable air channel plates 10 that have wind passage mouth; Wind passage mouth above it is consistent with wind passage mouth size, spacing on the fixing air channel plate, and wherein each movable air channel plate 10 is provided with 6 wind passage mouths, passes plate 10 edges, movable air channel with bolt and offers the Long Circle slotted eye; Be fixed in fixedly on the air channel plate 11, with on the plate of movable air channel 10 with fixing air channel plate 11 on wind passage mouth coincide together.The bolt hole of movable air channel plate 10 is oblong; When regulating its position on fixing air channel plate 11; It is moved down, make above it wind passage mouth and fixedly the wind passage mouth on the air channel plate 11 stagger or half overlap, and then the wing nut 12 that tights a bolt.So just be divided into a plurality of zones to fixing air channel plate 11, each movable air channel plate 10 is represented a zone.The adjusting of the full cut-off of wind passage mouth to standard-sized sheet can be realized in each zone; According to the actual requirements, air channel adjustable plate zones of different is opened and closed the adjusting of degree, thereby go to regulate the wind flow on each zone of air channel adjustable plate; Realize the even distribution of wind flow on whole; In the guard box on the cross section vertical with wind direction wind flow near evenly, thereby the interior homogeneity of temperature during than heavy load of guard box has satisfied the product test requirement that the communications industry product itself has horizontal fans better.
The high-temperature circulation test case VMC that the utility model is related is at the constant temperature test process, if because the thermal value of test product own is bigger; Or other reasons is when causing the temperature inside the box to raise, after VMC is introduced chamber with the new wind of the outer lower temperature of chamber, and direct entering chamber test zone not; But at first get into circulation air path; Regulating (, when causing mixing temperature low, needing well heater) with mixed air heat if new wind is too much through well heater; After fully mixing via circulating fan; To reach the air consistent with target temperature again and send into the chamber test zone, thereby guarantee in the whole test process, the temperature in the case evenly and do not have bigger temperature fluctuation and a deviation.
In order to keep the pressure in the case, after some new wind gets into, exhaust system will be discharged the air suitable with resh air requirement.
Simultaneously, after the chamber test is accomplished, need fast cooling to environment temperature, control system can be opened VMC and exhaust system automatically, a large amount of surrounding airs is got in the case, and discharge through exhaust system, realizes the function of fast cooling with this.
Being merely the utility model preferred embodiment in sum, is not the practical range that is used for limiting the utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should belong to the technological category of the utility model.
Claims (1)
1. a high-temperature circulation test case comprises heating system, air circulating system, test zone, and said air circulating system comprises circulating fan, circulation air path; Said heating system comprises well heater, it is characterized in that: also comprise new air intake machine and newly go out blower fan, the air inlet of said new air intake machine and the circulation air path of air circulating system are communicated with, and said air outlet and the test zone that newly goes out blower fan is communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120339613XU CN202221418U (en) | 2011-09-09 | 2011-09-09 | High temperature aging test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120339613XU CN202221418U (en) | 2011-09-09 | 2011-09-09 | High temperature aging test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202221418U true CN202221418U (en) | 2012-05-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120339613XU Expired - Fee Related CN202221418U (en) | 2011-09-09 | 2011-09-09 | High temperature aging test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202221418U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487684A (en) * | 2013-09-16 | 2014-01-01 | 广东省东莞市质量监督检测中心 | Mean time between failure (MTBF) testing machine and testing method thereof |
| CN104111266A (en) * | 2014-07-18 | 2014-10-22 | 常熟市环境试验设备有限公司 | High-precision natural ventilation heat aging test chamber |
| CN107450006A (en) * | 2017-08-14 | 2017-12-08 | 杭州可靠性仪器厂 | A kind of metal-oxide-semiconductor, diode power batch run device |
| CN109590031A (en) * | 2018-12-25 | 2019-04-09 | 重庆大学 | Superelevation uniformity high-temperature cabinet |
| CN112924774A (en) * | 2021-01-21 | 2021-06-08 | 杭州永谐科技有限公司上海分公司 | Constant-temperature darkroom system for aging test |
| CN115508660A (en) * | 2022-11-17 | 2022-12-23 | 海拓仪器(江苏)有限公司 | Electronic device aging testing device |
-
2011
- 2011-09-09 CN CN201120339613XU patent/CN202221418U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487684A (en) * | 2013-09-16 | 2014-01-01 | 广东省东莞市质量监督检测中心 | Mean time between failure (MTBF) testing machine and testing method thereof |
| CN104111266A (en) * | 2014-07-18 | 2014-10-22 | 常熟市环境试验设备有限公司 | High-precision natural ventilation heat aging test chamber |
| CN104111266B (en) * | 2014-07-18 | 2017-05-03 | 常熟市环境试验设备有限公司 | High-precision natural ventilation heat aging test chamber |
| CN107450006A (en) * | 2017-08-14 | 2017-12-08 | 杭州可靠性仪器厂 | A kind of metal-oxide-semiconductor, diode power batch run device |
| CN109590031A (en) * | 2018-12-25 | 2019-04-09 | 重庆大学 | Superelevation uniformity high-temperature cabinet |
| CN112924774A (en) * | 2021-01-21 | 2021-06-08 | 杭州永谐科技有限公司上海分公司 | Constant-temperature darkroom system for aging test |
| CN112924774B (en) * | 2021-01-21 | 2023-07-14 | 杭州永谐科技有限公司上海分公司 | Constant temperature darkroom system for aging test |
| CN115508660A (en) * | 2022-11-17 | 2022-12-23 | 海拓仪器(江苏)有限公司 | Electronic device aging testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120516 Termination date: 20140909 |
|
| EXPY | Termination of patent right or utility model |