CN114323717A - Dry forced air cooling case test system - Google Patents
Dry forced air cooling case test system Download PDFInfo
- Publication number
- CN114323717A CN114323717A CN202111486638.7A CN202111486638A CN114323717A CN 114323717 A CN114323717 A CN 114323717A CN 202111486638 A CN202111486638 A CN 202111486638A CN 114323717 A CN114323717 A CN 114323717A
- Authority
- CN
- China
- Prior art keywords
- module
- air
- dehumidification
- dry
- box
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 33
- 238000001816 cooling Methods 0.000 title claims abstract description 15
- 238000007791 dehumidification Methods 0.000 claims abstract description 42
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 12
- 230000033228 biological regulation Effects 0.000 claims abstract 2
- 238000009833 condensation Methods 0.000 claims description 15
- 230000005494 condensation Effects 0.000 claims description 15
- 230000008929 regeneration Effects 0.000 claims description 15
- 238000011069 regeneration method Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000011152 fibreglass Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000002313 adhesive film Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000010924 continuous production Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 229910001120 nichrome Inorganic materials 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 229920006395 saturated elastomer Polymers 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 26
- 238000012795 verification Methods 0.000 description 8
- 238000005057 refrigeration Methods 0.000 description 4
- 238000011056 performance test Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Images
Abstract
The closed dry air cooling box test system comprises a dry air cooler module, a dehumidification module, an air box module and a measurement and control module; the air cooler module futilely is the top layer module, provide the air of certain humiture for the dehumidification module, the dehumidification module carries out dehumidification processing to the air that the dry air cooler carried, carry to the bellows module again, the bellows module is the loaded module, built-in test piece, carry out temperature regulation to the spare part of surveying through the dry cold air that gets into, the measurement and control module realizes entire system's feedback function, according to the parameter of temperature and humidity sensor feedback in the bellows module, rethread PLC carries out power control to dry air cooler module and dehumidification module, realize that the temperature in the bellows module draws partially, functions such as humidity control. The invention can realize the requirement of the electronic product under the standard atmospheric pressure condition on the dry thermal environment, ensure that the electronic product does not frost before and after working, obtain the heat dissipation effect of the electronic product under different working conditions, and does not influence the product performance.
Description
Technical Field
The invention relates to an air cooling box test system, and belongs to the field of aerospace product ground test verification.
Background
At present, in the process of testing and experimenting partial high-power electronic products of domestic remote sensing satellites on the ground, heat generated by product work cannot be timely dissipated due to the fact that a deep cooling space background under a space environment does not exist, so that the testing effect is influenced, even product damage can be caused, condensation can occur in the using process of conventional refrigeration equipment under laboratory conditions, great hidden danger is caused to the safety of products, and therefore the high-power electronic products cannot be directly used.
Before formal use, ground laboratory tests and tests of remote sensing satellite high-power electronic products are required to verify whether the performance meets the use requirements, ground test verification is required to be carried out according to relevant standards, heat conduction is carried out on the basis of a refrigerating machine in the current-stage high-power electronic product tests and tests, heat is conducted out in time, in the test process, along with the circulating working conditions of high and low temperatures under normal pressure, the occurrence of condensation on the surface of a test piece is found through observation, the condensation on the surface of the product can bring risks to product performance, electronic components and parts can be seriously damaged, in order to guarantee the safety of the product, the condensation phenomenon needs to be solved, the high and low temperature circulation under normal pressure can be realized, and the requirement of product heat dissipation is met.
In the testing stage of the product, functional and performance verification of the product to be tested is required. The prior test verification system mainly provides a low-temperature environment for the product, dissipates the heat of the product in time, but does not dry the air at high and low temperatures. However, the system mainly has the following 3 problems:
1. there is no separate sealed chamber;
2. air under high and low temperature is not dried, and water vapor in the air can be condensed to form dew in the low-temperature return process;
3. the control feedback is not timely, and the condensation point cannot be timely judged. Therefore, in the product testing stage, after the condensation phenomenon occurs, the functions and the performances of the product are different from those of the formal product, and the test effect of equivalent comparison cannot be achieved.
The prior test verification system can only complete the heat dissipation function of the electronic product under the high and low temperature working conditions, and the influence on the electronic product after condensation is not judged, so the prior test verification system can not adapt to the development requirement of the current remote sensing electronic product test verification.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the dry air cooling box test system is provided, performance verification of a remote sensing satellite high-power electronic product under the non-condensation phenomenon can be realized, a closed cavity under normal pressure can be met, a high-low temperature environment is provided, and the condition that no condensation influences devices can be guaranteed.
The technical scheme adopted by the invention is as follows: a dry air cooler test system comprising: the system comprises a dry air cooler module, a dehumidification module, an air box module and a measurement and control module;
the dry cooling fan module provides air with set temperature and humidity for the dehumidification module; the dehumidification module is used for dehumidifying the air conveyed by the dry air cooler and conveying the air to the air box module; the air box module is a loaded module, equipment to be tested is arranged in the air box module, and the temperature of the equipment to be tested is regulated through the entering dry and cold air; the measurement and control module realizes measurement and control of the dry air cooler module, the dehumidification module and the air box module, and realizes adjustment of different working conditions according to temperature and humidity state adjustment parameters in the air box module, wherein the working conditions comprise temperature deviation, humidity control and power adjustment.
The dry air cooler module comprises a refrigeration sub-module and a heating sub-module: the refrigerating sub-module adopts a valley wheel compressor for refrigerating, and the heating sub-module adopts a nichrome electric heating wire type heater for heating; the air is cooled or heated and regulated by the dry air cooler module, then the air with corresponding temperature and humidity is output and is conveyed to the dehumidification module.
The dehumidification module adopts a rotary dehumidifier, a dehumidification rotary sealing system of the rotary dehumidifier is divided into a treatment area and a regeneration area, and the dehumidification rotary wheel rotates at the speed of 8-12 revolutions per hour so as to ensure that the whole dehumidification work is a continuous process; when the processing air enters the 270-degree processing area of the rotating wheel, water molecules in the air are absorbed by the moisture absorbent in the rotating wheel, and the water vapor simultaneously undergoes phase change to release latent heat; the runner of the processing air area tends to be saturated due to the moisture absorption, and the processing air becomes dry and hot air due to the reduction of the moisture and the release of latent heat; and dry air is conveyed to the air box module through the processing fan; meanwhile, in the regeneration area, the other path of air firstly passes through the regeneration heater, then is changed into high-temperature air and passes through the rotating wheel after moisture absorption, so that the moisture absorbed in the rotating wheel is evaporated, and the dehumidification capability of the rotating wheel is recovered; meanwhile, the regeneration air is changed into wet air due to the evaporation of the moisture of the runner; and then, discharging the wet air to the outside through a regeneration fan.
The air box module provides a closed space environment for a device to be tested, and dry air with different temperatures enters the air box to realize different temperature environments; the air box module comprises a box body and an upper cover, the air box module is of a honeycomb sandwich structure, a skin adopts a glass fiber reinforced plastic panel, a honeycomb adopts a porous aluminum honeycomb core, and the air box module is bonded by a 90-degree cured structural adhesive film and manufactured by an autoclave molding process.
The box body of the air box module is divided into 4 side plates and 1 bottom plate, 6 honeycomb plates are formed together with the upper cover respectively, and the sides of the honeycomb plates are sealed by adopting glass fiber reinforced plastic materials; the contact surfaces between the side plates and the bottom plate are processed into 45-degree splicing structures, inner reinforcement and outer reinforcement are carried out at the splicing positions, and the reinforcing layers are made of glass fiber reinforced plastic materials, so that the sealing strength and the bonding strength are guaranteed.
The measurement and control module controls the dry air cooler module and the dehumidification module according to an instruction fed back by the temperature and humidity sensor, judges temperature parameters and air humidity parameters, and guarantees the full working condition range temperature requirement of the equipment to be tested without condensation.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention can realize the drying of air, the air humidity is below the condensation point, and the invention is suitable for the performance test of a test product under the normal pressure environment and avoids the damage of the condensation phenomenon to the electronic components of the product.
(2) The invention improves the structure of the drying air cooling box, and the weight is reduced to 1/2 of the original structure at least.
(3) According to the invention, the temperature and the humidity are fed back in real time through the sensor, so that the linkage function of the system is realized, the process parameters can be changed according to different working conditions, and the problems of condensation and frosting are avoided.
Drawings
FIG. 1 is a schematic diagram of a system architecture according to the present invention;
FIG. 2 is a schematic view of a dehumidification module of the present invention;
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
The invention provides a performance test auxiliary system of a space remote sensor, which is used for controlling the temperature of a radiating surface of the remote sensor when testing in a ground normal-pressure environment, so that the remote sensor can finish performance tests such as spectrum calibration, sensor test and the like in the ground normal-pressure environment.
As shown in fig. 1, the system of the invention mainly comprises a dry air cooler module 1, a dehumidification module 2, an air box module 3 and a measurement and control module 4;
the dry air cooler module 1 comprises a refrigeration sub-module, a heating sub-module, a box body, a pipeline and the like, wherein the refrigeration sub-module uses a valley wheel compressor, and the heating sub-module uses a heating mode of a nichrome heating wire heater.
The functions realized by the dry cooling fan module 1 are as follows:
A. cooling/heating the air to a temperature required by the test conditions;
B. air under certain working condition temperature is conveyed into the dehumidification module 2.
The dehumidification submodule 2 of the invention uses a rotary dehumidifier 6, and is assembled with a filter 5, a box body, a pipeline and the like according to the figure 2.
The dehumidification module 2 adopts a rotary dehumidifier 6, a dehumidification rotary sealing system of the dehumidification module is divided into a treatment area and a regeneration area, and a dehumidification rotary wheel rotates at the speed of 8-12 revolutions per hour so as to ensure that the whole dehumidification work is a continuous process; when the treated humid air is called treated air and enters a 270-degree treatment area of the rotating wheel, water molecules in the air are absorbed by the moisture absorbent in the rotating wheel, and the water vapor simultaneously undergoes phase change and releases latent heat; the rotating wheel in the air processing area tends to be saturated due to the fact that the rotating wheel absorbs certain moisture; at this time, the process air becomes dry, hot air due to the reduction of its own moisture and the release of latent heat; and delivers dry air to the bellows module 3 by means of the process fan. Meanwhile, in the regeneration area, the other path of air firstly passes through the regeneration heater, then is changed into high-temperature air and passes through the rotating wheel after moisture absorption, so that the moisture absorbed in the rotating wheel is evaporated, and the dehumidification capability of the rotating wheel is recovered; meanwhile, the regeneration air is changed into wet air due to the evaporation of the moisture of the runner; and then, discharging the wet air to the outside through a regeneration fan.
The dehumidification module 2 functions as follows:
A. dehumidifying air under a certain working condition temperature;
B. filtering impurities such as oil, water and the like in the compressed air to a T level;
C. the filtered, dried compressed air is delivered into the bellows module 3 to increase the air flow rate in the bellows and to reduce the dew point temperature of the air in the bellows.
D. Air in the air box module 3 is pumped to a working chamber of a dry air cooler, dehumidification is carried out after the required working condition temperature is tested, and then the air is conveyed into the air box module 3 to form circulation.
The air box module 3 mainly provides a closed space environment for a product to be tested, and dry air with different temperatures enters the air box to realize different temperature environments.
The air box module 3 adopts a honeycomb sandwich structure, the skin adopts a glass fiber reinforced plastic panel, the honeycomb adopts a porous aluminum honeycomb core, the honeycomb core is bonded by a structural adhesive film solidified at 90 degrees, and the structural adhesive film is manufactured by an autoclave molding process. The main body of the bellows is divided into 4 side plates and 1 bottom plate, 6 honeycomb plates are respectively formed together with the upper cover, and the side edges of the honeycomb plates are sealed by adopting glass fiber reinforced plastic materials for avoiding exposing the honeycomb. The contact surfaces between the side plates and between the side plates and the bottom plate are processed into 45-degree splicing, inner reinforcement and outer reinforcement are carried out at the splicing positions, and the reinforcing layers are made of glass fiber reinforced plastic materials, so that sealing and bonding strength can be guaranteed. Can be assembled according to the size and the shape of the product.
According to the invention, a core controller of a measurement and control module 4 adopts a PLC (programmable logic controller), a touch screen is used as an operation terminal, a PT100 temperature sensor and an alumina humidity sensor are adopted, and the sensors are arranged in an air box module 3.
The system is assembled according to the figure 1, the air delivery port of the dry air cooler module 1 is connected with the air return port of the dehumidification module 2 through an air pipe, the air delivery port of the dehumidification module 2 is connected with the air return port of the air box module 3 through an air pipe, and the air delivery port of the air box module 3 is connected with the air return port of the dry air cooler through an air pipe. The temperature and humidity sensors of the measurement and control module 4 are pasted in the air box module 3.
According to the invention, through system optimization, the temperature of the equipment to be tested is controlled at normal pressure by using dry air, the air is refrigerated by the compressor of the dry air cooler module 1, the air is heated by the heating pipe, the requirement of the equipment to be tested on the ambient temperature is realized, and the condensation phenomenon in the normal pressure environment is solved by the dehumidification module 2.
The invention is not described in detail and is within the knowledge of a person skilled in the art.
Claims (6)
1. The utility model provides a dry forced air cooling case test system which characterized in that includes: the device comprises a dry air cooler module (1), a dehumidification module (2), an air box module (3) and a measurement and control module (4);
the dry air cooler module (1) provides air with set temperature and humidity for the dehumidification module (2); the dehumidification module (2) is used for dehumidifying the air conveyed by the dry air cooler (1) and then conveying the air to the air box module (3); the air box module (3) is a loaded module, equipment to be tested is arranged in the air box module, and the temperature of the equipment to be tested is regulated through the entering dry and cold air; measurement and control module (4) realize realizing measuring and control to dry air cooler module (1), dehumidification module (2), bellows module (3), according to the humiture state adjustment parameter in bellows module (3), realize the adjustment of different operating modes, and the operating mode includes that the temperature draws partially, humidity control, power regulation.
2. A dry air-cooled box test system according to claim 1, characterized in that the dry air cooler module (1) comprises a cooling sub-module and a heating sub-module: the refrigerating sub-module adopts a valley wheel compressor for refrigerating, and the heating sub-module adopts a nichrome electric heating wire type heater for heating; the air is cooled or heated and regulated by the dry air cooler module (1), and then the air with corresponding temperature and humidity is output and is conveyed to the dehumidification module (2).
3. The dry air cooling box test system according to claim 2, wherein the dehumidification module (2) adopts a rotary dehumidifier (6), a dehumidification rotary sealing system of the rotary dehumidifier (6) is divided into a treatment area and a regeneration area, and the dehumidification rotary wheel rotates at a speed of 8-12 revolutions per hour to ensure that the whole dehumidification work is a continuous process; when the processing air enters the 270-degree processing area of the rotating wheel, water molecules in the air are absorbed by the moisture absorbent in the rotating wheel, and the water vapor simultaneously undergoes phase change to release latent heat; the runner of the processing air area tends to be saturated due to the moisture absorption, and the processing air becomes dry and hot air due to the reduction of the moisture and the release of latent heat; and dry air is conveyed to the air box module (3) through the processing fan; meanwhile, in the regeneration area, the other path of air firstly passes through the regeneration heater, then is changed into high-temperature air and passes through the rotating wheel after moisture absorption, so that the moisture absorbed in the rotating wheel is evaporated, and the dehumidification capability of the rotating wheel is recovered; meanwhile, the regeneration air is changed into wet air due to the evaporation of the moisture of the runner; and then, discharging the wet air to the outside through a regeneration fan.
4. A dry air-cooled box test system according to claim 3, characterized in that the air box module (3) provides a closed space environment for the device to be tested, and dry air with different temperatures enters the air box to realize different temperature environments; the air box module (3) comprises a box body and an upper cover, the air box module is of a honeycomb sandwich structure, a skin adopts a glass fiber reinforced plastic panel, a honeycomb adopts a porous aluminum honeycomb core, and the air box module is bonded by a 90-degree cured structural adhesive film and manufactured by an autoclave molding process.
5. A dry air cooling box test system according to claim 4, characterized in that the box body of the air box module (3) is divided into 4 side plates and 1 bottom plate, 6 honeycomb plates are respectively formed together with the upper cover, and the side edges of the honeycomb plates are sealed by adopting glass fiber reinforced plastic materials; the contact surfaces between the side plates and the bottom plate are processed into 45-degree splicing structures, inner reinforcement and outer reinforcement are carried out at the splicing positions, and the reinforcing layers are made of glass fiber reinforced plastic materials, so that the sealing strength and the bonding strength are guaranteed.
6. The dry air cooling box test system according to claim 5, wherein the measurement and control module (4) controls the dry air cooler module (1) and the dehumidification module (2) according to an instruction fed back by the temperature and humidity sensor, and judges a temperature parameter and an air humidity parameter, so that the full working condition range temperature requirement of the equipment to be tested is met, and the condensation phenomenon is avoided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486638.7A CN114323717A (en) | 2021-12-07 | 2021-12-07 | Dry forced air cooling case test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111486638.7A CN114323717A (en) | 2021-12-07 | 2021-12-07 | Dry forced air cooling case test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114323717A true CN114323717A (en) | 2022-04-12 |
Family
ID=81048173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111486638.7A Pending CN114323717A (en) | 2021-12-07 | 2021-12-07 | Dry forced air cooling case test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114323717A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05164684A (en) * | 1991-12-19 | 1993-06-29 | Tabai Espec Corp | Tester of dew comdensation cycle |
| JP2007081022A (en) * | 2005-09-13 | 2007-03-29 | Oki Electric Ind Co Ltd | Thermal shock test device, thermal shock test method and method of inspecting semiconductor wafer |
| JP2010271233A (en) * | 2009-05-22 | 2010-12-02 | Espec Corp | Environmental testing apparatus |
| CN202562512U (en) * | 2011-12-06 | 2012-11-28 | 中国测试技术研究院流量研究所 | Stepping type changeable environment simulation device |
| CN202993416U (en) * | 2012-11-29 | 2013-06-12 | 杭州捷瑞空气处理设备有限公司 | Condensing heat recycling energy-saving turning wheel dehumidifier |
| CN204989072U (en) * | 2015-09-01 | 2016-01-20 | 陕西斯达煤矿安全装备有限公司 | High temperature ageing tests case with circulation dehydrating unit |
| CN206474183U (en) * | 2017-01-24 | 2017-09-08 | 东莞市环测检测设备有限公司 | The quick temperature of low dew point high/low temperature becomes case |
| CN207623210U (en) * | 2017-12-27 | 2018-07-17 | 天津亭华科技有限公司 | A kind of novel thermal shock test chamber |
| CN110501279A (en) * | 2019-09-11 | 2019-11-26 | 中国兵器工业第五九研究所 | A kind of multi-factor comprehensive highland and severe cold climatic environmental changes acceleration test apparatus |
| CN113600253A (en) * | 2021-08-20 | 2021-11-05 | 海拓仪器(江苏)有限公司 | Frostless high and low temperature testing machine |
-
2021
- 2021-12-07 CN CN202111486638.7A patent/CN114323717A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05164684A (en) * | 1991-12-19 | 1993-06-29 | Tabai Espec Corp | Tester of dew comdensation cycle |
| JP2007081022A (en) * | 2005-09-13 | 2007-03-29 | Oki Electric Ind Co Ltd | Thermal shock test device, thermal shock test method and method of inspecting semiconductor wafer |
| JP2010271233A (en) * | 2009-05-22 | 2010-12-02 | Espec Corp | Environmental testing apparatus |
| CN202562512U (en) * | 2011-12-06 | 2012-11-28 | 中国测试技术研究院流量研究所 | Stepping type changeable environment simulation device |
| CN202993416U (en) * | 2012-11-29 | 2013-06-12 | 杭州捷瑞空气处理设备有限公司 | Condensing heat recycling energy-saving turning wheel dehumidifier |
| CN204989072U (en) * | 2015-09-01 | 2016-01-20 | 陕西斯达煤矿安全装备有限公司 | High temperature ageing tests case with circulation dehydrating unit |
| CN206474183U (en) * | 2017-01-24 | 2017-09-08 | 东莞市环测检测设备有限公司 | The quick temperature of low dew point high/low temperature becomes case |
| CN207623210U (en) * | 2017-12-27 | 2018-07-17 | 天津亭华科技有限公司 | A kind of novel thermal shock test chamber |
| CN110501279A (en) * | 2019-09-11 | 2019-11-26 | 中国兵器工业第五九研究所 | A kind of multi-factor comprehensive highland and severe cold climatic environmental changes acceleration test apparatus |
| CN113600253A (en) * | 2021-08-20 | 2021-11-05 | 海拓仪器(江苏)有限公司 | Frostless high and low temperature testing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103175382A (en) | Heat pump drying system | |
| CN105444270B (en) | A kind of air-conditioning system and its control method | |
| CN105757912B (en) | A kind of quick accuracy controlling system of museum's showcase microenvironment temperature and humidity | |
| CN206755418U (en) | A kind of pump type heat rotary dehumidifier | |
| CN207945912U (en) | A kind of thermal pump dehumidification drying machine | |
| CN106004327B (en) | A kind of automobile double air-conditioner control system and method | |
| CN105757807A (en) | Dehumidifier with air volume regulation function | |
| CN110207280A (en) | Dehumidifier with completely new wind moisture, temperature independent control function | |
| CN108579349B (en) | Dry air generator, charging pile and dehumidification method for circuit board of charging pile | |
| CN207623033U (en) | A kind of low-temperature air-cooling heat exchanger performance Detecting data | |
| CN207214290U (en) | A kind of heat pump energy saving low-temp recovery Novel wind-dehumidifier | |
| CN206522874U (en) | Increase the device of the air quantity of condenser of dehumidifier | |
| CN110926820A (en) | High-low temperature environment simulation equipment for automobile engine test | |
| CN114323717A (en) | Dry forced air cooling case test system | |
| CN205957395U (en) | Microminiature constant temperature and humidity control device | |
| CN108507019A (en) | A kind of wind tunnel laboratory combined multiple mould assembly dehumidifier | |
| CN106123158A (en) | A kind of semiconductor demoistener of heat absorbing fins group band thermal protection structure | |
| CN106895597A (en) | Air-cooled temperature adjustment pump type heat dehumidifier group | |
| CN204697460U (en) | A kind of cooling heat radiator of electrical control cubicles | |
| CN108344554B (en) | The quick regulating system of environmental wind tunnel humidity and adjusting method | |
| CN208688141U (en) | A kind of semi-enclosed drying system | |
| CN207353732U (en) | A kind of anti-condensation dehumidifier | |
| CN207007519U (en) | A kind of automobile or cold engine starting test VMC | |
| CN206474183U (en) | The quick temperature of low dew point high/low temperature becomes case | |
| CN114935179A (en) | Double-rotating-wheel dehumidifying mechanism, drying room system and clean room system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |