CN115582150B - Air duct structure and environment test box - Google Patents
Air duct structure and environment test box Download PDFInfo
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- CN115582150B CN115582150B CN202211369828.5A CN202211369828A CN115582150B CN 115582150 B CN115582150 B CN 115582150B CN 202211369828 A CN202211369828 A CN 202211369828A CN 115582150 B CN115582150 B CN 115582150B
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- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 230000007613 environmental effect Effects 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L1/00—Enclosures; Chambers
- B01L1/02—Air-pressure chambers; Air-locks therefor
- B01L1/025—Environmental chambers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L7/00—Heating or cooling apparatus; Heat insulating devices
- B01L7/02—Water baths; Sand baths; Air baths
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- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention belongs to the technical field of environmental test equipment, and discloses an air duct structure and an environmental test box, wherein the air duct structure comprises a box body, a fan assembly, an inner box layer frame, an air deflector, a flow equalizing plate, an evaporator and a heater; the fan assembly is arranged in the air supply area and is used for conveying air to the air guide area; the inner box layer frame is arranged in the test area and comprises a plurality of supporting plates, and the objects to be tested are placed on the supporting plates; the air deflector is arranged in the air guiding area and guides the air to the diversion area; the flow equalizing plate is arranged in the flow dividing area, is in a honeycomb structure, and is used for equalizing gas and horizontally guiding the gas to the supporting plate; the evaporator is arranged in the return air area; the heater is disposed in the return air zone and downstream of the evaporator. The invention adopts the air duct structure to improve the utilization rate of flowing gas, so that the temperature of the object to be measured placed on each supporting plate can be effectively controlled.
Description
Technical Field
The invention relates to the technical field of environmental test equipment, in particular to an air duct structure and an environmental test box.
Background
The environment test box is a test device which artificially creates various single or comprehensive environment factors in a certain specific space, artificially changes the environment parameters and the change process of the environment parameters in the space according to different using purposes so as to approximate the environment influence suffered by a simulated product in the service life, has wide application, and can be used for detecting electronic products, electrical products, foods, automobile products, rubber materials, metal products and the like.
In order to ensure that the environmental test box can provide reliable and repeatable technical indexes in the test process, the temperature of a test area inside the box body needs to be kept within a preset range, the existing environmental test box is usually heated or cooled in an air treatment area and then directly blown to the test area through a fan, the temperature of the test area is kept within the preset range, but the volume of the inner box for bearing the to-be-tested object is far greater than the volume of the to-be-tested object, so that only a small amount of flowing gas blows across the surface of the to-be-tested object, the heat on the surface of the to-be-tested object is taken away by the flowing gas or the heat carried by the flowing gas is transferred to the to-be-tested object, and the other large amount of flowing gas does not contact the surface of the to-be-tested object, which is equivalent to the waste of the flowing gas, the utilization rate is not high, and for the to-be-tested object with a large heating load, the surface heat cannot be taken away in time, the temperature is easy to rise, and finally the requirement of the test condition cannot be met is caused.
Therefore, an air duct structure and an environmental test chamber are needed to solve the above technical problems.
Disclosure of Invention
One object of the present invention is to: the utility model provides an air duct structure and environmental test case improves the utilization ratio of flowing gas for the temperature of the article that awaits measuring of placing on every backup pad can all obtain effective control.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, an air duct structure is provided, including:
the box body is internally provided with a wind sending area, a wind guiding area, a shunting area, a testing area and a return air area, wherein the wind sending area, the wind guiding area, the shunting area, the testing area and the return air area are sequentially communicated and form a closed loop;
the fan assembly is arranged in the air supply area and is used for conveying air to the air guide area;
the inner box layer rack is arranged in the test area and comprises a plurality of detachable supporting plates which are arranged at intervals along the vertical direction, and the objects to be tested are placed on the supporting plates;
the air deflector is arranged in the air guiding area and is used for guiding the air to the diversion area;
the flow equalizing plate is arranged in the flow dividing area and is positioned at one side of the inner box layer frame, is in a honeycomb structure and is used for equalizing gas and guiding the gas to the supporting plate horizontally;
the evaporator is arranged in the return air area;
and the heater is arranged in the return air zone and is positioned at the downstream of the evaporator.
As an optional technical scheme, the fan assembly comprises a motor and a centrifugal impeller, the motor is arranged outside the box body, the centrifugal impeller is arranged inside the box body and located in the air supply area, and the centrifugal impeller is in transmission connection with the output end of the motor.
As an optional technical scheme, the fan assembly is mounted on the top of the box body, and the centrifugal impeller is located right above the heater.
As an optional technical scheme, the backup pad level sets up, flow equalizing plate vertically set up in the air inlet side of inner box layer frame.
As an optional technical scheme, the one end of aviation baffle is the stiff end, the other end of aviation baffle is the wind-guiding end, the stiff end with the inner wall fixed connection of box, the wind-guiding end towards flow equalizing plate downward sloping extends.
As an optional technical scheme, the air guide area is internally provided with a plurality of air guide plates at intervals along the vertical direction, and the middle part of each air guide plate is provided with a vent.
As an optional technical solution, in the two adjacent air deflectors, the area of the air guiding end in the air deflector positioned above is smaller than the area of the air guiding end in the air deflector positioned below.
As an optional technical scheme, a flow dividing plate with preset thickness is arranged between the flow equalizing plate and the inner box layer frame, and a flow dividing hole is arranged between the flow dividing plate and the corresponding two supporting plates.
As an optional technical scheme, a flow equalizing net is arranged between the flow equalizing plate and the inner box layer frame and/or between the evaporator and the inner box layer frame.
In a second aspect, there is provided an environmental test chamber comprising an air duct arrangement as described above.
The invention has the beneficial effects that:
the invention provides an air duct structure and an environment test box, wherein the environment test box comprises the air duct structure, when the environment test box is used, articles to be tested are placed on each supporting plate, more articles to be tested can be tested simultaneously, the utilization rate of an inner box layer frame is improved, the testing efficiency is ensured, when the number of articles to be tested is small, the supporting plates without the articles to be tested are detached, and the positions can be placed on the articles to be tested with larger volume; the fan assembly, the evaporator and the heater start to operate, the heater heats the gas to a preset temperature value, the fan assembly conveys the gas heated to the preset temperature to the air guide area, the air guide plate located in the air guide area guides the gas to the flow distribution area, and the flow equalization plate located in the flow distribution area is of a honeycomb structure, so that the flow equalization plate can divide the gas sent by the air guide plate by utilizing honeycomb meshes and uniformly input the gas into gaps between two adjacent support plates along the horizontal direction, and the gas exchanges heat with the to-be-detected objects at the position, so that the temperature of the to-be-detected objects placed on each support plate can be effectively controlled.
Drawings
The invention is described in further detail below with reference to the drawings and examples;
FIG. 1 is an exploded view of the structure of an environmental test chamber according to an embodiment;
FIG. 2 is a cross-sectional view of an environmental test chamber according to an embodiment;
fig. 3 is a schematic structural view of an air deflector according to an embodiment.
In the figure:
100. a case; 101. a wind supply area; 102. an air guiding area; 103. a split area; 104. a test zone; 105. a return air zone;
1. a fan assembly; 11. a motor; 12. a centrifugal impeller;
2. an inner box layer frame; 21. a support plate;
3. an air deflector; 31. a fixed end; 32. an air guide end; 33. a vent;
4. a flow equalizing plate;
5. an evaporator;
6. a heater;
7. a diverter plate;
8. and (5) a uniform flow net.
Detailed Description
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments 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 fall within the scope of the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the operation, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for providing a special meaning.
In the description herein, reference to the term "one embodiment," "an example," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 3, this embodiment provides an environmental test chamber, this environmental test chamber includes the wind channel structure, before gas gets into interior case layer frame 2 in proper order through flow equalizing plate 4, flow dividing plate 7 and flow equalizing net 8's regulation, adopt three layer construction to flow equalizing and flow dividing promptly, can guarantee the homogeneity that gas gets into interior case layer frame 2, with the utilization ratio of improvement gas, improve the probability that gas contacted the article that awaits measuring promptly, when testing a large amount of articles that awaits measuring, can in time take out the heat of the surface of the article that awaits measuring, satisfy the test requirement.
The air duct structure of the embodiment comprises a box body 100, a fan assembly 1, an inner box layer frame 2, an air deflector 3, a flow equalizing plate 4, an evaporator 5 and a heater 6, wherein an air supply area 101, an air guide area 102, a flow dividing area 103, a test area 104 and an air return area 105 are arranged in the box body 100, and the air supply area 101, the air guide area 102, the flow dividing area 103, the test area 104 and the air return area 105 are sequentially communicated and form a closed loop; the fan assembly 1 is arranged in the air supply area 101, and the fan assembly 1 is used for conveying air to the air guide area 102; the inner box layer frame 2 is arranged in the test area 104, the inner box layer frame 2 comprises a plurality of detachable support plates 21 which are arranged at intervals along the vertical direction, and the object to be tested is placed on the support plates 21; the air deflector 3 is arranged in the air guiding area 102, and the air deflector 3 is used for guiding the gas to the diversion area 103; the flow equalizing plate 4 is arranged in the flow dividing area 103 and is positioned at one side of the inner box layer frame 2, the flow equalizing plate 4 is in a honeycomb structure, and the flow equalizing plate 4 is used for equalizing gas and horizontally guiding the gas to the supporting plate 21; the evaporator 5 is arranged in the return air zone 105; the heater 6 is disposed in the return air zone 105 downstream of the evaporator 5.
Specifically, when the environmental test chamber of the embodiment is used, the articles to be tested are placed on each supporting plate 21, so that more articles to be tested can be tested simultaneously, the utilization rate of the inner box layer frame 2 is improved, the test efficiency is ensured, when the number of articles to be tested is small, the supporting plates 21 without the articles to be tested are detached, the articles to be tested can be placed at the positions where the articles to be tested are larger in volume, the positions correspond to a plurality of honeycomb-shaped meshes of the flow equalizing plate 4, and gas passing through the honeycomb-shaped meshes can contact the articles to be tested with larger volume; the fan assembly 1, the evaporator 5 and the heater 6 start to operate, the heater 6 heats the gas to a preset temperature value, the fan assembly 1 conveys the gas heated to the preset temperature to the air guiding area 102, the air deflector 3 positioned in the air guiding area 102 guides the gas to the flow dividing area 103, and the flow equalizing plate 4 positioned in the flow dividing area 103 is of a honeycomb structure, so that the flow equalizing plate 4 can split the gas sent by the air deflector 3 by utilizing honeycomb meshes and evenly input the gas into gaps between two adjacent support plates 21 along the horizontal direction, and the gas exchanges heat with an article to be detected at the position, so that the temperature of the article to be detected placed on each support plate 21 can be effectively controlled.
Alternatively, the fan assembly 1 includes a motor 11 and a centrifugal impeller 12, the motor 11 is mounted outside the box 100, the centrifugal impeller 12 is disposed inside the box 100 and located in the air-sending area 101, and the centrifugal impeller 12 is in transmission connection with an output end of the motor 11. The motor 11 can drive the centrifugal impeller 12 to rotate rapidly in the air supply area 101, so that flowing air is input into the air guide area 102; the temperature inside the box 100 is precisely controlled by the heater 6, the object to be tested needs to be tested in a temperature environment with small fluctuation rate so as to ensure the accuracy of the test, but the motor 11 generates heat in the running process, so that the temperature rise caused by the heat generated by the motor 11 is avoided when the heat is input into the box 100, and the motor 11 is arranged outside the box 100 in the embodiment, so that the stability of the temperature inside the box 100 can be ensured.
Alternatively, the fan assembly 1 is mounted on top of the housing 100 with the centrifugal impeller 12 directly above the heater 6. The flow equalizing plates 4 and the evaporators 5 are respectively positioned at two sides of the inner box layer frame 2, the humidity is increased after flowing gas blows across the surface of an object to be detected, the evaporators 5 positioned at the downstream of the inner box layer frame 2 can evaporate moisture in the flowing gas, and then the dried flowing gas is heated by the heater 6 to increase the temperature, so that the flowing gas is controlled within a preset range; the environmental test chamber is usually used in a laboratory, and the area of the laboratory is smaller, so in the embodiment, the fan assembly 1 is arranged at the top of the box body 100, and the occupied area of the environmental test chamber is reduced; and the centrifugal impeller 12 is arranged right above the heater 6, and the air suction function of the centrifugal impeller 12 is utilized to provide the fluidity of the air and ensure that the air can be heated by the heater 6.
Optionally, the supporting plate 21 is horizontally arranged, and the flow equalizing plate 4 is vertically arranged on the air inlet side of the inner box layer frame 2. The flow equalization board 4 is vertical to be set up, therefore, the cellular mesh on the flow equalization board 4 extends in the horizontal direction, and the flowing gas that passes cellular mesh gets into the inside of inner box layer frame 2 along the horizontal direction, and backup pad 21 level sets up, on the one hand can make the article steady direction that awaits measuring in backup pad 21, and the other terminal surface also can guarantee that flowing gas level passes the clearance between two adjacent backup pads 21, reduces the resistance that flowing gas received.
Optionally, one end of the air deflector 3 is a fixed end 31, the other end of the air deflector 3 is an air guiding end 32, the fixed end 31 is fixedly connected with the inner wall of the box body 100, and the air guiding end 32 extends downwards in a slanting manner towards the flow equalizing plate 4. The flowing gas output by the fan assembly 1 is blocked by the obliquely arranged air deflector 3 and flows along the extending direction of the air guiding end 32, so that the flowing gas passes through the honeycomb-shaped mesh holes of the flow equalizing plate 4.
Optionally, a plurality of air deflectors 3 are arranged in the air guiding area 102 at intervals along the vertical direction, and the middle part of each air deflector 3 is provided with a ventilation opening 33, so that one part of flowing gas is guided by the air deflector 3 to flow to the flow equalizing plate 4, the other part of flowing gas passes through the ventilation opening 33 and flows to the other air deflector 3 below, and the plurality of air deflectors 3 are arranged along the vertical direction, so that the flow equalizing capacity of flowing gas can be improved, namely, flowing gas is input from each position from top to bottom on one side of the flow equalizing plate 4 facing the air deflector 3, and finally the uniformity of the output gas of the flow equalizing plate 4 is improved.
Optionally, in the two adjacent air deflectors 3, the area of the air guiding end 32 in the air deflector 3 located above is smaller than the area of the air guiding end 32 in the air deflector 3 located below, so that the flowing gas is guided to the flow equalizing plate 4 in a layered manner.
Optionally, a splitter plate 7 with a preset thickness is arranged between the flow equalizing plate 4 and the inner box layer frame 2, and a splitter hole is arranged between the splitter plate 7 and the two supporting plates 21.
Specifically, the flow equalizing plate 4 of the honeycomb structure has a preset thickness, after the gas guided by the air deflector 3 passes through the honeycomb mesh holes of the flow equalizing plate 4, the flow direction of the gas is changed to be horizontally input into the flow dividing holes of the flow dividing plate 7, the flow dividing holes on the flow dividing plate 7 correspond to the gaps between two adjacent support plates 21, and the gas divided by the flow dividing plate 7 can enter each layer of the inner box layer frame 2.
Optionally, a flow equalizing net 8 is arranged between the flow equalizing plate 4 and the inner box layer frame 2 and/or between the evaporator 5 and the inner box layer frame 2.
In the embodiment, a flow equalizing net 8 is arranged between the flow equalizing plate 4 and the inner box layer frame 2 and between the evaporator 5 and the inner box layer frame 2, the flow equalizing net 8 between the flow equalizing plate 4 and the inner box layer frame 2 is a first flow equalizing net 8, and the flow equalizing net 8 between the evaporator 5 and the inner box layer frame 2 is a second flow equalizing net 8; the flow equalization net 8 of this embodiment is woven by stainless steel wires, and the first flow equalization net 8 can make gas more evenly enter each layer in the inner box layer frame 2, and gas flowing out from the inner box layer frame 2 can flow equalization through the second flow equalization net 8 and evenly contact with the evaporator 5, so that the water removal efficiency is improved.
Furthermore, the foregoing description of the preferred embodiments and the principles of the invention is provided herein. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (7)
1. An air duct structure, comprising:
the box body (100), the inside of box body (100) is provided with air supply district (101), wind-guiding district (102), reposition of redundant personnel district (103), test district (104) and return air district (105), air supply district (101), wind-guiding district (102), reposition of redundant personnel district (103), test district (104) and return air district (105) communicate in proper order and enclose into the closed loop;
the fan assembly (1) is arranged in the air supply area (101), and the fan assembly (1) is used for conveying air to the air guide area (102);
the inner box layer frame (2) is arranged in the test area (104), the inner box layer frame (2) comprises a plurality of detachable supporting plates (21) which are arranged at intervals along the vertical direction, and the object to be tested is placed on the supporting plates (21);
the air deflector (3) is arranged in the air guiding area (102), and the air deflector (3) is used for guiding the gas to the diversion area (103);
the flow equalizing plate (4) is arranged in the flow dividing area (103) and is positioned on one side of the inner box layer frame (2), the flow equalizing plate (4) is of a honeycomb structure, and the flow equalizing plate (4) is used for equalizing gas and horizontally guiding the gas to the supporting plate (21);
an evaporator (5) provided in the return air zone (105);
a heater (6) arranged in the return air zone (105) and positioned downstream of the evaporator (5);
one end of the air deflector (3) is a fixed end (31), the other end of the air deflector (3) is an air guide end (32), the fixed end (31) is fixedly connected with the inner wall of the box body (100), and the air guide end (32) extends downwards in a tilting manner towards the flow equalizing plate (4);
a plurality of air deflectors (3) are arranged in the air guide area (102) at intervals along the vertical direction, and ventilation openings (33) are formed in the middle of each air deflector (3);
in the two adjacent air deflectors (3), the area of the air guiding end (32) in the air deflector (3) positioned above is smaller than the area of the air guiding end (32) in the air deflector (3) positioned below.
2. The air duct structure according to claim 1, wherein the fan assembly (1) comprises a motor (11) and a centrifugal impeller (12), the motor (11) is mounted outside the box body (100), the centrifugal impeller (12) is arranged inside the box body (100) and located in the air supply area (101), and the centrifugal impeller (12) is in transmission connection with an output end of the motor (11).
3. The air duct structure according to claim 2, characterized in that the fan assembly (1) is mounted on top of the box (100) and the centrifugal impeller (12) is located directly above the heater (6).
4. The air duct structure according to claim 1, characterized in that the support plate (21) is horizontally arranged, and the flow equalizing plate (4) is vertically arranged on the air inlet side of the inner box layer frame (2).
5. The air duct structure according to claim 1, wherein a flow dividing plate (7) with a preset thickness is arranged between the flow equalizing plate (4) and the inner box layer frame (2), and a flow dividing hole is arranged between the flow dividing plate (7) and two supporting plates (21).
6. The air duct structure according to any one of claims 1 to 5, characterized in that a flow equalizing net (8) is arranged between the flow equalizing plate (4) and the inner tank shelf (2) and/or between the evaporator (5) and the inner tank shelf (2).
7. An environmental test chamber comprising the duct structure of any one of claims 1 to 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211369828.5A CN115582150B (en) | 2022-11-03 | 2022-11-03 | Air duct structure and environment test box |
| CN202311767886.8A CN117643925A (en) | 2022-11-03 | 2022-11-03 | Air duct structure and environment test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211369828.5A CN115582150B (en) | 2022-11-03 | 2022-11-03 | Air duct structure and environment test box |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311767886.8A Division CN117643925A (en) | 2022-11-03 | 2022-11-03 | Air duct structure and environment test box |
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| Publication Number | Publication Date |
|---|---|
| CN115582150A CN115582150A (en) | 2023-01-10 |
| CN115582150B true CN115582150B (en) | 2024-01-16 |
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| CN202311767886.8A Pending CN117643925A (en) | 2022-11-03 | 2022-11-03 | Air duct structure and environment test box |
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| CN107088442A (en) * | 2017-03-13 | 2017-08-25 | 北京航空航天大学 | A kind of low energy consumption ultralow temperature experimental system and method based on time device for cooling |
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| EP3601989B1 (en) * | 2017-03-27 | 2022-01-26 | Aerodium Technologies, SIA | An open vertical wind tunnel |
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- 2022-11-03 CN CN202211369828.5A patent/CN115582150B/en active Active
- 2022-11-03 CN CN202311767886.8A patent/CN117643925A/en active Pending
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| CN107088442A (en) * | 2017-03-13 | 2017-08-25 | 北京航空航天大学 | A kind of low energy consumption ultralow temperature experimental system and method based on time device for cooling |
| CN109022753A (en) * | 2018-07-09 | 2018-12-18 | 苏州新长光热能科技有限公司 | A kind of batch bar soaking pit |
| CN212492981U (en) * | 2020-05-15 | 2021-02-09 | 天津国测航天科技有限责任公司 | Novel structure constant temperature and humidity testing machine |
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| Publication number | Publication date |
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| CN115582150A (en) | 2023-01-10 |
| CN117643925A (en) | 2024-03-05 |
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