CN205164765U - Fast temperature change test case of liquid nitrogen auxiliary cooling - Google Patents
Fast temperature change test case of liquid nitrogen auxiliary cooling Download PDFInfo
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- CN205164765U CN205164765U CN201520875799.9U CN201520875799U CN205164765U CN 205164765 U CN205164765 U CN 205164765U CN 201520875799 U CN201520875799 U CN 201520875799U CN 205164765 U CN205164765 U CN 205164765U
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Abstract
The utility model is suitable for a testing equipment technical field provides a fast temperature change test case of liquid nitrogen auxiliary cooling, including experimental box, bellows, liquid nitrogen refrigerating system and mechanical refrigerating system, liquid nitrogen refrigeration case through inlet air channel and air -out path connection bellows, is located to be equipped with at inlet air channel respectively in experimental box upper portion and lower part, is equipped with the bleeder vent on the liquid nitrogen refrigeration case, liquid nitrogen refrigerating system includes liquid nitrogen input tube and control valve, and mechanical refrigerating system includes heat exchange coil and refrigerator, and the refrigerator is connected with heat exchange coil, the internal temperature sensor that is equipped with of proof box, and temperature sensor's output is connected the input of controller, mechanical refrigeration system and liquid nitrogen refrigerating system are connected to the input of controller. Therefore, the utility model discloses can realize rapid cooling, reduce mechanical refrigeration system's work load simultaneously, guaranteed the instantaneous cooling of proof box after the cryogenic temperature can continue, practiced thrift equipment manufacturing cost, this proof box is dismantled and assembled, easy operation, convenient to use.
Description
Technical field
The utility model relates to testing equipment technical field, particularly relates to a kind of fast temperature changing test chamber of liquid nitrogen auxiliary cooling.
Background technology
At present, known by industry, some need each electronic product of working under extremely low temperature and all kinds of component of machine and even raw material to need to carry out strict temperature detection.Chamber is that people are used for a kind of instrument of analog equipment environment for use, the influence degree that it can help people to shift to an earlier date evaluate temperature likely to produce product, so as to ascertaining the reason in advance, take measures, prevent trouble before it happens, make product play due function in actual use and guarantee due reliability.
Fast temperature changing test chamber in the market generally all adopts mechanical refrigeration method, compression refrigeration is most economical and most widely used refrigeration modes, also be the refrigeration modes the most often used in environmental test equipment, its principle utilizes the evaporation latent heat of the liquid such as freon to absorb heat from cooled object and realizes refrigeration, the high-power refrigeration unit of more High cooling power is just needed when the rate of temperature fall required is larger, its evaporimeter be equipped with is also larger, its windage is also larger, because cold needs to be exchanged by air-flow forced cycling hot to take cold out of, be difficult to the cold discharging it in a short period of time, and evaporimeter oneself itself is also load, so generally maximum by the rate of temperature fall of the fast temperature changing test chamber of mechanical refrigeration method is 20 DEG C/min, as expected rate of temperature fall faster, very huge refrigeration unit will be used or overlap refrigeration unit more, make system complex, manufacturing cost rises, system reliability declines.
In summary, obviously there is inconvenience and defect in actual use in prior art, so be necessary to be improved.
Utility model content
For above-mentioned defect, the purpose of this utility model is the fast temperature changing test chamber providing a kind of liquid nitrogen auxiliary cooling, it can realize fast cooling, reduce the workload of mechanical refrigeration system simultaneously, after ensure that the instantaneous cooling of chamber, cryogenic temperature can continue, and has saved device fabrication cost, and this chamber is dismantled and assembled, simple to operate, easy to use.
To achieve these goals, the utility model provides a kind of fast temperature changing test chamber of liquid nitrogen auxiliary cooling, comprises test casing, bellows, liquid nitrogen refrigerating system and mechanical refrigeration system,
Described test casing top connects described bellows by air intake passage, described air intake passage is provided with air inlet fan, described test lower box connects described bellows by air-out passage, described air-out passage is provided with induced-draught fan, described test box house is provided with liquid nitrogen refrigerating case, described liquid nitrogen refrigerating case is communicated with described bellows by air intake passage, and described liquid nitrogen refrigerating case is provided with air-vent;
Described liquid nitrogen refrigerating system comprises liquid nitrogen input pipe and control valve, described liquid nitrogen input pipe enters in described liquid nitrogen refrigerating case through described test casing, the output of described liquid nitrogen input pipe is provided with liquid nitrogen arm, described liquid nitrogen arm end is provided with spraynozzle, and the input of described liquid nitrogen input pipe is connected with described control valve;
Described mechanical refrigeration system comprises heat exchange coil and refrigeration machine, is provided with described heat exchange coil in described bellows, and described bellows outside is provided with described refrigeration machine, and described refrigeration machine is connected with described heat exchange coil;
Be provided with temperature sensor in described test casing, described chamber is external is provided with controller, and the output of described temperature sensor connects the input of described controller, and the input of described controller connects described mechanical refrigeration system and described liquid nitrogen refrigerating system.
As preferred technical scheme, described air intake passage and described air-out passage detachable.
As preferred technical scheme, described heat exchange coil shape comprises waveform, spirality, U-shaped.
As preferred technical scheme, described liquid nitrogen arm evenly can arrange many.
The utility model provides a kind of fast temperature changing test chamber of liquid nitrogen auxiliary cooling, comprises test casing, bellows, liquid nitrogen refrigerating system and mechanical refrigeration system.Described test casing top connects described bellows by air intake passage, and described air intake passage is provided with air inlet fan, and cold air can better be blown in test casing by the setting of described air inlet fan, improves the warm speed change degree of test box house.Described test lower box connects described bellows by air-out passage, and described air-out passage is provided with induced-draught fan, the setting of described induced-draught fan, can better be siphoned away by the hot gas in described test casing, ensures that in described test casing, air rationally circulates.Described test box house is provided with liquid nitrogen refrigerating case, and described liquid nitrogen refrigerating case is communicated with described bellows by air intake passage, and described liquid nitrogen refrigerating case is provided with air-vent, and described air-vent can better make cold air enter in test casing through described liquid nitrogen refrigerating case.Described liquid nitrogen refrigerating system comprises liquid nitrogen input pipe and control valve, described liquid nitrogen input pipe enters in described liquid nitrogen refrigerating case through described test casing, the output of described liquid nitrogen input pipe is provided with liquid nitrogen arm, described liquid nitrogen arm end is provided with spraynozzle, the input of described liquid nitrogen input pipe is connected with described control valve, but described spraynozzle liquid nitrogen atomization, sprays into uniformly, makes instantaneous lowering temperature uniform in described test casing.Described mechanical refrigeration system comprises heat exchange coil and refrigeration machine, described heat exchange coil is provided with in described bellows, described bellows outside is provided with described refrigeration machine, described refrigeration machine is connected with described heat exchange coil, described mechanical refrigeration system can in process of refrigerastion reasonable employment, namely saved equipment cost, after in turn ensure that the instantaneous cooling of liquid nitrogen, refrigeration can continue.Temperature sensor is provided with in described test casing, described chamber is external is provided with controller, the output of described temperature sensor connects the input of described controller, the input of described controller connects described mechanical refrigeration system and described liquid nitrogen refrigerating system, described temperature sensor is by the temperature in the described test casing of induction, catch temperature signal, temperature signal is sent to controller, described controller is contrasted by the temperature information preset and the temperature information of reception and judges and send command information, control described mechanical refrigeration system by described command signal to freeze in advance, when product needed is carried out freezing or liquid nitrogen refrigerating system separate refrigeration by liquid nitrogen refrigerating system and mechanical refrigeration system when temperature becomes fast simultaneously, make the instantaneous cooling of described test casing, when in described chamber during Wen Bianhou temperature constant, liquid nitrogen refrigerating system cease operation, refrigeration work is proceeded by mechanical refrigeration system, reach test products temperature required, reasonable detection, ensure properties of product, the fast temperature changing test chamber of this liquid nitrogen auxiliary cooling reduces the workload of mechanical refrigeration system, after ensure that the instantaneous cooling of test casing, cryogenic temperature can continue, save device fabrication cost, this equipment is dismantled and assembled, simple to operate, easy to use.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one embodiment;
Fig. 2 is another structural representation of the utility model one embodiment;
Fig. 3 is the enlarged drawing of part A in the novel embodiment of this use.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Embodiment one:
See Fig. 1, Fig. 2 and Fig. 3, the utility model provides a kind of fast temperature changing test chamber of liquid nitrogen auxiliary cooling, comprises test casing 1, bellows 2, liquid nitrogen refrigerating system 3 and mechanical refrigeration system 4.
Described test casing 1 top connects described bellows 2 by air intake passage 5, and described air intake passage 5 is provided with air inlet fan 6, and cold air can better be blown in test casing 1 by the setting of described air inlet fan 6, improves the warm speed change degree of test casing 1 inside.Described test casing 1 bottom connects described bellows 2 by air-out passage 7, and described air-out passage 7 is provided with induced-draught fan 8, the setting of described induced-draught fan 8, can better be siphoned away by the hot gas in described test casing 1, ensures that in described test casing 1, air rationally circulates.
Described test casing 1 inside is provided with liquid nitrogen refrigerating case 31, described liquid nitrogen refrigerating case 31 is communicated with described bellows 2 by air intake passage 7, described liquid nitrogen refrigerating case 31 is provided with air-vent 32, and described air-vent 32 can better make cold air enter in test casing 1 through described liquid nitrogen refrigerating case 31.
Described liquid nitrogen refrigerating system 3 comprises liquid nitrogen input pipe 33 and control valve 34, described liquid nitrogen input pipe 33 enters in described liquid nitrogen refrigerating case 31 through described test casing 1, the output of described liquid nitrogen input pipe 33 is provided with liquid nitrogen arm 35, described liquid nitrogen arm 35 end is provided with spraynozzle 36, the input of described liquid nitrogen input pipe 33 is connected with described control valve 34, described spraynozzle 36 can make liquid nitrogen be atomized, and sprays into uniformly, makes instantaneous lowering temperature uniform in described test casing 1.
Described mechanical refrigeration system 4 comprises heat exchange coil 41 and refrigeration machine 42, described heat exchange coil 41 is provided with in described bellows 2, described bellows 2 outside is provided with described refrigeration machine 42, described refrigeration machine 42 is connected with described heat exchange coil 41, described mechanical refrigeration system 4 can in process of refrigerastion reasonable employment, namely saved equipment cost, after in turn ensure that the instantaneous cooling of liquid nitrogen, refrigeration can continue.
Temperature sensor 9 is provided with in described test casing 1, controller 10 is provided with outside described test casing 1, the output of described temperature sensor 9 connects the input of described controller 10, the input of described controller 10 connects described mechanical refrigeration system 4 and described liquid nitrogen refrigerating system 3, described temperature sensor 9 is by the temperature in the described test casing 1 of induction, catch temperature signal, temperature signal is sent to controller 10, the temperature information that described controller 10 passes through temperature information and the reception preset contrasts and judges and send command information, control described mechanical refrigeration system 4 by described command signal to freeze in advance, when product needed is carried out freezing or liquid nitrogen refrigerating system 3 separate refrigeration by liquid nitrogen refrigerating system 3 and mechanical refrigeration system 4 when temperature becomes fast simultaneously, make the instantaneous cooling of described test casing 1, when in described chamber 1 during Wen Bianhou temperature constant, liquid nitrogen refrigerating system 3 cease operation, refrigeration work is proceeded by mechanical refrigeration system 4, reach test products temperature required, reasonable detection, ensure properties of product, the fast temperature changing test chamber of this liquid nitrogen auxiliary cooling reduces the workload of mechanical refrigeration system 4, after ensure that the instantaneous cooling of test casing 1, cryogenic temperature can continue, save device fabrication cost, this equipment is dismantled and assembled, simple to operate, easy to use.
Preferably, described air intake passage 5 and described air-out passage 7 detachable.Dismountable structure easy access, extends service life, improves the utilization rate of equipment.
Preferably, described heat exchange coil 41 shape comprises waveform, spirality, U-shaped.The setting of described waveform, spirality or U-shaped, can increase the heat exchange contact area of coil pipe.
Preferably, described liquid nitrogen arm 35 evenly can arrange many, liquid nitrogen can be made better evenly to spray, reach the effect of instantaneous cooling.
The utility model provides a kind of fast temperature changing test chamber of liquid nitrogen auxiliary cooling, comprises test casing, bellows, liquid nitrogen refrigerating system and mechanical refrigeration system.Described test casing top connects described bellows by air intake passage, and described air intake passage is provided with air inlet fan, and cold air can better be blown in test casing by the setting of described air inlet fan, improves the warm speed change degree of test box house.Described test lower box connects described bellows by air-out passage, and described air-out passage is provided with induced-draught fan, the setting of described induced-draught fan, can better be siphoned away by the hot gas in described test casing, ensures that in described test casing, air rationally circulates.Described test box house is provided with liquid nitrogen refrigerating case, and described liquid nitrogen refrigerating case is communicated with described bellows by air intake passage, and described liquid nitrogen refrigerating case is provided with air-vent; Described air-vent can better make cold air enter in test casing through described liquid nitrogen refrigerating case.Described liquid nitrogen refrigerating system comprises liquid nitrogen input pipe and control valve, described liquid nitrogen input pipe enters in described liquid nitrogen refrigerating case through described test casing, the output of described liquid nitrogen input pipe is provided with liquid nitrogen arm, described liquid nitrogen arm end is provided with spraynozzle, the input of described liquid nitrogen input pipe is connected with described control valve, described spraynozzle can make liquid nitrogen be atomized, and sprays into uniformly, makes instantaneous lowering temperature uniform in described test casing.Described mechanical refrigeration system comprises heat exchange coil and refrigeration machine, described heat exchange coil is provided with in described bellows, described bellows outside is provided with described refrigeration machine, described refrigeration machine is connected with described heat exchange coil, described mechanical refrigeration system can in process of refrigerastion reasonable employment, namely saved equipment cost, after in turn ensure that the instantaneous cooling of liquid nitrogen, refrigeration can continue.Temperature sensor is provided with in described test casing, described chamber is external is provided with controller, the output of described temperature sensor connects the input of described controller, the input of described controller connects described mechanical refrigeration system and described liquid nitrogen refrigerating system, described temperature sensor is by the temperature in the described test casing of induction, catch temperature signal, temperature signal is sent to controller, described controller is contrasted by the temperature information preset and the temperature information of reception and judges and send command information, control described mechanical refrigeration system by described command signal to freeze in advance, when product needed is carried out freezing or liquid nitrogen refrigerating system separate refrigeration by liquid nitrogen refrigerating system and mechanical refrigeration system when temperature becomes fast simultaneously, make the instantaneous cooling of described test casing, when in described chamber during Wen Bianhou temperature constant, liquid nitrogen refrigerating system cease operation, refrigeration work is proceeded by mechanical refrigeration system, reach test products temperature required, reasonable detection, ensure properties of product, the fast temperature changing test chamber of this liquid nitrogen auxiliary cooling reduces the workload of mechanical refrigeration system, after ensure that the instantaneous cooling of test casing, cryogenic temperature can continue, save device fabrication cost, this equipment is dismantled and assembled, simple to operate, easy to use.
Certainly; the utility model also can have other various embodiments; when not deviating from the utility model spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the utility model, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the utility model.
Claims (4)
1. a fast temperature changing test chamber for liquid nitrogen auxiliary cooling, is characterized in that, comprises test casing, bellows, liquid nitrogen refrigerating system and mechanical refrigeration system,
Described test casing top connects described bellows by air intake passage, described air intake passage is provided with air inlet fan, described test lower box connects described bellows by air-out passage, described air-out passage is provided with induced-draught fan, described test box house is provided with liquid nitrogen refrigerating case, described liquid nitrogen refrigerating case is communicated with described bellows by air intake passage, and described liquid nitrogen refrigerating case is provided with air-vent;
Described liquid nitrogen refrigerating system comprises liquid nitrogen input pipe and control valve, described liquid nitrogen input pipe enters in described liquid nitrogen refrigerating case through described test casing, the output of described liquid nitrogen input pipe is provided with liquid nitrogen arm, described liquid nitrogen arm end is provided with spraynozzle, and the input of described liquid nitrogen input pipe is connected with described control valve;
Described mechanical refrigeration system comprises heat exchange coil and refrigeration machine, is provided with heat exchange coil in described bellows, and described bellows outside is provided with refrigeration machine, and described refrigeration machine is connected with described heat exchange coil;
Be provided with temperature sensor in described test casing, described chamber is external is provided with controller, and the output of described temperature sensor connects the input of described controller, and the input of described controller connects described mechanical refrigeration system and described liquid nitrogen refrigerating system.
2. the fast temperature changing test chamber of liquid nitrogen auxiliary cooling according to claim 1, is characterized in that, described air intake passage and described air-out passage detachable.
3. the fast temperature changing test chamber of liquid nitrogen auxiliary cooling according to claim 1 and 2, is characterized in that, described heat exchange coil shape comprises waveform, spirality, U-shaped.
4. the fast temperature changing test chamber of liquid nitrogen auxiliary cooling according to claim 1 and 2, is characterized in that, described liquid nitrogen arm evenly can arrange many.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520875799.9U CN205164765U (en) | 2015-11-05 | 2015-11-05 | Fast temperature change test case of liquid nitrogen auxiliary cooling |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520875799.9U CN205164765U (en) | 2015-11-05 | 2015-11-05 | Fast temperature change test case of liquid nitrogen auxiliary cooling |
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| CN205164765U true CN205164765U (en) | 2016-04-20 |
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| CN201520875799.9U Expired - Fee Related CN205164765U (en) | 2015-11-05 | 2015-11-05 | Fast temperature change test case of liquid nitrogen auxiliary cooling |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109847811A (en) * | 2019-02-26 | 2019-06-07 | 重庆平伟实业股份有限公司 | Utilize the semiconductor devices cryogenic test equipment of liquid nitrogen gasification process cooling capacity |
| CN110108532A (en) * | 2019-05-17 | 2019-08-09 | 中国科学院理化技术研究所 | High/low temperature processing equipment |
| CN111058008A (en) * | 2020-01-16 | 2020-04-24 | 浙江工业大学 | Portable sample platform device of temperature rise or fall based on liquid nitrogen refrigeration |
| CN111551378A (en) * | 2020-04-26 | 2020-08-18 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Reliability test device and test system suitable for liquid nitrogen cooling equipment |
| CN113466286A (en) * | 2021-06-30 | 2021-10-01 | 中国科学院西北生态环境资源研究院 | Freeze-thaw test equipment for simulating concrete ultralow-temperature-large-temperature-difference freeze-thaw process |
| GB2615555A (en) * | 2022-02-11 | 2023-08-16 | Airbus Operations Ltd | Low temperature pipe system testing |
-
2015
- 2015-11-05 CN CN201520875799.9U patent/CN205164765U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109847811A (en) * | 2019-02-26 | 2019-06-07 | 重庆平伟实业股份有限公司 | Utilize the semiconductor devices cryogenic test equipment of liquid nitrogen gasification process cooling capacity |
| CN110108532A (en) * | 2019-05-17 | 2019-08-09 | 中国科学院理化技术研究所 | High/low temperature processing equipment |
| CN110108532B (en) * | 2019-05-17 | 2024-04-19 | 中国科学院理化技术研究所 | High-low temperature treatment equipment |
| CN111058008A (en) * | 2020-01-16 | 2020-04-24 | 浙江工业大学 | Portable sample platform device of temperature rise or fall based on liquid nitrogen refrigeration |
| CN111551378A (en) * | 2020-04-26 | 2020-08-18 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Reliability test device and test system suitable for liquid nitrogen cooling equipment |
| CN113466286A (en) * | 2021-06-30 | 2021-10-01 | 中国科学院西北生态环境资源研究院 | Freeze-thaw test equipment for simulating concrete ultralow-temperature-large-temperature-difference freeze-thaw process |
| GB2615555A (en) * | 2022-02-11 | 2023-08-16 | Airbus Operations Ltd | Low temperature pipe system testing |
| EP4230983A1 (en) * | 2022-02-11 | 2023-08-23 | Airbus Operations Limited | Low temperature pipe system testing |
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| Date | Code | Title | Description |
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| 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: 20160420 Termination date: 20201105 |
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| CF01 | Termination of patent right due to non-payment of annual fee |