CN114963679A - Temperature change equipment and temperature reduction method thereof - Google Patents
Temperature change equipment and temperature reduction method thereof Download PDFInfo
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- CN114963679A CN114963679A CN202111660761.6A CN202111660761A CN114963679A CN 114963679 A CN114963679 A CN 114963679A CN 202111660761 A CN202111660761 A CN 202111660761A CN 114963679 A CN114963679 A CN 114963679A
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- 230000008859 change Effects 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title description 5
- 230000009467 reduction Effects 0.000 title description 4
- 238000001816 cooling Methods 0.000 claims abstract description 150
- 239000011229 interlayer Substances 0.000 claims abstract description 9
- 238000009423 ventilation Methods 0.000 claims description 50
- 238000010438 heat treatment Methods 0.000 claims description 48
- 239000007788 liquid Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 2
- 238000012360 testing method Methods 0.000 abstract description 22
- 239000007789 gas Substances 0.000 description 60
- 230000001133 acceleration Effects 0.000 description 7
- 239000002131 composite material Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
A temperature change device and a cooling method thereof belong to the field of test equipment. The temperature change device includes: the box body comprises a working area, an interlayer area is arranged between the box body and the working area, an air channel is arranged in the interlayer area, the box body comprises a first air inlet and a first air outlet, the working area comprises a second air inlet and a second air outlet, and the first air inlet and the second air inlet are arranged in a staggered mode; the refrigerating device is arranged in the air duct and used for cooling the working area; gas enters the air channel through the first air inlet, flows through the refrigerating device, enters the working area through the second air inlet, and then sequentially passes through the second air outlet and the first air outlet to be discharged out of the box body, and the cooling device is also used for cooling the gas, so that the cooling speed is increased.
Description
Technical Field
The invention belongs to the field of test equipment, and particularly relates to temperature change equipment and a cooling method thereof.
Background
The high-temperature test box is necessary test equipment in the fields of aviation, automobiles, household appliances, scientific research and the like, and is used for testing and determining parameters and performances of electricians, electronics and other products and materials after the temperature environment changes in high-temperature or constant tests. However, the conventional high-temperature test chamber has a problem of slow cooling rate.
Disclosure of Invention
An object of the embodiment of the application is to provide a temperature change device and a cooling method thereof, which solve the technical problem that a high-temperature test box in the prior art is slow in cooling speed, and particularly the technical problem that the cooling speed is slow in a high-temperature test box with the highest working temperature reaching more than 360 ℃.
In a first aspect, the present invention provides a temperature-varying apparatus, comprising:
the air-conditioning unit comprises a box body, wherein a working area is arranged in the box body, an interlayer area is arranged between the box body and the working area, an air channel is arranged in the interlayer area, the box body comprises a first air inlet and a first air outlet, the working area comprises a second air inlet and a second air outlet, and the first air inlet and the second air inlet are arranged in a staggered mode;
the refrigerating device is arranged in the air duct and used for cooling the working area;
the air enters the air duct through the first air inlet, flows through the refrigerating device, enters the working area through the second air inlet, and is discharged out of the box body through the second air outlet and the first air outlet in sequence, and the cooling device is also used for cooling the air;
the wind channel is L type, includes 1 corner at least.
Furthermore, the first air inlet and the first air outlet are arranged in a manner of being adjacent to each other, a baffle is arranged between the first air inlet and the first air outlet to prevent the gas from entering the box body from the first air inlet and directly discharging out of the box body through the first air outlet, and the second air inlet and the second air outlet are arranged on two opposite side surfaces of the working space.
Further, the refrigerating device comprises a heat exchanger, and a heat exchange medium of the heat exchanger comprises one or a combination of a plurality of gases and liquids.
Further, still include speed-increasing heat sink, set up in the wind channel, be used for right gas carries out the speed-increasing cooling, speed-increasing heat sink includes speed-increasing heat sink, speed-increasing heat sink includes more than one ventilation hole, the ventilation hole includes inlet air end and air-out end, the ventilation cross sectional area of inlet air end with be greater than the ventilation cross sectional area and the air-out end.
Furthermore, the ratio of the ventilation cross-sectional area of the air outlet end of each ventilation hole to the ventilation cross-sectional area of the air inlet end is 0.2-0.6; the ratio of the ventilation cross-sectional area of the air outlet end to the ventilation cross-sectional area of the air inlet end is 0.2-0.6; the distance between the air inlet end and the air outlet end is 60-135 mm.
Furthermore, the number of the ventilation holes in the edge area of the speed-increasing and temperature-reducing pipe is smaller than that of the ventilation holes in the central area, and the area of the ventilation cross section of the air inlet end and the area of the ventilation cross section of the air outlet end in the edge area are both smaller than that of the ventilation cross section of the air inlet end and that of the ventilation cross section of the air outlet end in the central area.
Furthermore, the speed increasing device comprises a rotary fan blade and a heating device, the heating device is arranged in the air channel and used for heating the working area, and the gas flows through the heating device when passing through the air channel and is used for cooling the heating device.
The first flow guide body comprises a first protruding part, the first flow guide body is positioned in an air channel at the lower part of the first air inlet, and the first protruding part is used for changing the flow direction of air entering the first air inlet; and a second flow guide body is arranged at the corner, the second flow guide body comprises a second protruding part, and the second protruding part is used for changing the gas flowing direction between the first air inlet and the corner in the air duct.
In a second aspect, the present invention provides a method for cooling a temperature-varying device, including: the temperature change equipment as claimed in any one of claims 1 to 8 is adopted, and gas enters from the first air inlet, enters the working space through the L-shaped air duct and the refrigerating device, is cooled and then is discharged from the outlet.
Further, the rotating fan blade is started, the first air inlet and the first air outlet are opened, the rotating fan blade runs for 1-3s and is closed, gas enters the air channel through the first air inlet, sequentially flows through the first flow guide body, the speed-increasing and cooling pipe, the heating device, the rotating fan blade and the refrigerating device, then enters the working area through the second air inlet, and sequentially passes through the second air outlet and the first air outlet to be discharged out of the box body.
According to the temperature change equipment and the cooling method thereof, the heating device and the working area are subjected to composite cooling by adopting the gas circulation and refrigeration device, so that the cooling rate is improved; the refrigerating device cools the working area and also cools the gas, so that the cooling rate is further improved; gas can circulate in the working area, and the cooling rate is further improved; the first air inlet and the second air inlet are arranged in a staggered mode, the air channels are arranged in an L shape, the air flow is increased, air circulation is achieved inside and outside the working area, and the cooling rate is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
FIG. 1 is a schematic structural diagram of a temperature-varying apparatus according to the present invention;
FIG. 2 is a longitudinal cross-sectional view of the speed increasing tube of the present invention;
FIGS. 3 to 4 are transverse sectional views of the speed increasing tube of the present invention;
FIG. 5 is a schematic structural diagram of a temperature varying apparatus according to the present invention;
fig. 6 is a schematic structural diagram of another temperature-varying apparatus according to the present invention.
Icon: 10-a box body; 101-a first air inlet; 102-a first air outlet; 20-working interval; 201-a second air inlet; 202-a second air outlet; 30-interlayer interval; 301-air duct; 40-a speed increasing pipe; 401-a vent; 50-a heating device; 60-rotating fan blades; 70-a refrigeration device; 80-gas; 90-a first flow conductor; 901-a first projection; 100-a second flow conductor; 1001-second projection.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The high-temperature test box provides a high-temperature simulation environment for product testing, and the heating device 50 is adopted to heat the working area 20, but the cooling rate of the test box after temperature rise is slow at present, and the highest temperature is limited. The maximum temperature of most high-temperature test boxes is within 200 ℃, and the cooling rate is between 1 and 3 ℃/Min; however, after the applicant adopts the scheme of the invention, the maximum temperature of the high-temperature test box can reach more than 360 ℃, the cooling rate can reach 10 ℃/Min at most, and the linear cooling can reach 8 ℃/Min (300 ℃ → 60 ℃).
The inventor finds that: at present, the cooling rate of a test box after temperature rise is slow, the highest temperature is limited, and the main reason that the highest temperature of the high-temperature test box can not reach more than 360 ℃ and needs the rapid cooling requirement is that the test box has several aspects: on the first hand, the main arrangement mode of the existing test box is that a heating device, a refrigerating device and the like are arranged on the left side or the right side of a box body in parallel to heat or cool a working chamber of the test box, an air inlet and an air outlet are arranged on the box body and are generally arranged on the upper portion and the lower portion of the box body, so that the stroke is increased after air enters the box body, but the inlet and the outlet are separated from the heating device and the like by a certain distance, so that the heating device and the like on the box body of the test box can not be effectively cooled, and the cooling rate of the box body is reduced; on the other hand, directly be provided with air intake and air outlet on the proof box, open and make the air current get into work cavity and carry out the natural cooling, cooling speed is slow, if cooling with higher speed, increase air inlet and air outlet, equipment leakproofness variation, and the volume increase, under the natural cooling mode, full temperature section cooling rate is all slow, and especially low temperature section cooling rate is difficult to satisfy, receives the box size, how much, service environment's factor influences greatly. In the third aspect, forced exhaust cooling is performed through a fan and the like, but in the forced exhaust cooling mode, the cooling rate of the high-temperature section is fast, the cooling rate of the low-temperature section is difficult to meet due to environmental influence, and the linear cooling control of the full-temperature section is unstable.
Therefore, a temperature change device, in particular a temperature change test chamber, is provided, as shown in fig. 1 and 5, comprising: the refrigerator comprises a box body 10, wherein a working area 20 is arranged in the box body 10, an interlayer area 30 is arranged between the box body 10 and the working area 20, an air duct 301 is arranged in the interlayer area 30, the box body 10 comprises a first air inlet 101 and a first air outlet 102, the first air inlet 101 is arranged at the top of the box body 10 and is far away from a refrigerating device 70, the working area 20 comprises a second air inlet 201 and a second air outlet 202, and the first air inlet 101 and the second air inlet 201 are arranged in a staggered mode; the refrigerating device 70 is arranged in the air duct 301 and used for cooling the working area 20; the gas 80 enters the air duct 301 through the first air inlet 101, flows through the refrigerating device 70, enters the working area 20 through the second air inlet 201, and is discharged out of the box body 10 through the second air outlet 202 and the first air outlet 102 in sequence, and the cooling device is also used for cooling the gas 80.
The air duct 301 is L-shaped, and the air duct 301 includes at least 1 corner.
Wherein, the product to be tested is placed in the working interval 20 during the test.
Through the arrangement, the working area 20 is cooled compositely by the circulation of the gas 80 and the refrigerating device 70, and compared with natural cooling, the cooling rate is improved.
The refrigerating device 70 cools the working space 20 and also cools the gas 80, so that the cooling rate is further improved; the refrigeration device 70 includes a heat exchanger. Heat exchangers, also called heat exchangers, are devices that transfer part of the heat of a hot fluid to a cold fluid. The heat exchange medium of the heat exchanger comprises one or a combination of a plurality of gases 80 and liquids.
Wherein, the heat exchanger can adjust heat transfer medium according to the experiment requirement. The flow and the pressure of the heat exchange medium can be adjusted according to different experimental requirements, and specifically, in order to meet different cooling requirements, especially various cooling linear curves, the flow and the pressure of the heat exchange medium and the heat exchange medium can be adjusted in various combinations. From this, refrigerating plant 70 has more the controllability, through adopting gaseous 80 circulation and refrigerating plant 70 to carry out compound cooling to work interval 20, compares natural cooling or fan forced cooling, has better controllability, has reduced and has influenced by factors such as box size, load how much, service environment, makes low temperature section cooling rate more controllable, reduces high low temperature section cooling rate difference, has improved the linear cooling control stability in full temperature section.
The gas 80 circulates in the working space 20 to further increase the cooling rate; first income wind gap 101 sets up the top at box 10, and keep away from refrigerating plant 70, first income wind gap 101 and second income wind gap 201 dislocation are arranged, wind channel 301 is the L type, wind channel 301 includes 1 corner at least, the flow of gas 80 has been increased, and make the working interval 20 inside and outside all have the circulation of gas 80 (the working interval 20 is referred to in the working interval 20, the working interval 20 is referred to the L type wind channel between first income wind gap 101 and the second income wind gap 201 outward), therefore, the wall of working interval 20 between working interval 20 and the L type wind channel is in charge of receiving the heat absorption of double length's gas 80, can fully absorb the heat and take away, further improved the cooling rate again, especially the cooling rate of high temperature section, realize more rapid cooling.
In one embodiment, the first air inlet 101 is disposed adjacent to the first air outlet 102, and a baffle is disposed between the first air inlet 101 and the first air outlet 102 to prevent the gas 80 from entering the box 10 from the first air inlet 101 and directly exiting the box 10 through the first air outlet 102. Compare into the mode of wind gap and air outlet overall arrangement from top to bottom, the adjacent layout mode of first wind gap 101 and first air outlet 102 is showing and has been increased gaseous 80 flow, increases the heat of taking of gaseous 80, has gaseous 80 circulation inside and outside 20 in the workspace moreover, realizes more rapid cooling, has also realized the cooling of equipment in the wind channel, can realize the synchronous cooling of box equipment, avoids partial heating equipment can not cool down and influences the cooling efficiency problem. Through long flow cooling mode, gaseous heat transfer is abundant, reduces high low temperature section cooling rate difference, has improved the linear cooling control stability in full temperature section, and the cooling air current flow is long, is favorable to the more compact design of equipment.
In one embodiment, the second air inlet 201 and the second air outlet 202 are located on two opposite sides of the working space 20. The space occupied by the airflow in the working area 20 is larger, the heat in the working area 20 is easier to take away, and the cooling rate is improved.
In one embodiment, the first air inlet 101 and the first air outlet 102 are opened in a linkage manner, so that the flow rate of the gas 80 is increased, heat is driven to be rapidly discharged, and the cooling rate is increased. In one embodiment, the first air inlet 101 and the first air outlet 102 are opened by a pneumatic cylinder in a linkage manner.
In one embodiment, the gas 80 comprises air.
The inventor finds that: the air duct 301 is designed in an L shape, the flow path of the cooling air flow is long, heat can be fully absorbed and taken away, the cooling rate is further improved, especially the cooling rate of a high-temperature section, the rapid cooling is realized, and the compact design of the equipment is facilitated, however, because the air duct 301 is designed in the L shape and has at least one corner, the air flow can be retarded during the air flow, the flow rate of the air is inevitably reduced, the first air inlet 101 is arranged at the top end of the box body, the flow direction of the inlet air is nearly vertical to the flow direction of the air in the air duct 301, the air is redirected, the flow rate of the air is also inevitably reduced, the flow path of the cooling air flow is long, the air is retarded and lost by the flow path, the flow rate of the air is also inevitably reduced, the natural air is introduced into the air duct 301 in the L shape to cool, and the refrigerating device 70 performs the composite cooling on the working section 20, compared with the natural cooling, the cooling rate is improved, but some inevitable gas loss is brought about by the problem of the structure of the cooling device.
In order to reduce the influence of the gas loss on the cooling rate, in an embodiment, the cooling system further includes an acceleration cooling device disposed in the air duct 301 for accelerating and cooling the gas 80 to increase the cooling rate.
In one embodiment, the speed-increasing cooling device comprises a speed-increasing cooling pipe 40, the speed-increasing cooling pipe comprises more than one vent hole, the speed-increasing cooling pipe 40 comprises an air inlet end and an air outlet end, and the area of the vent cross section of the air inlet end is larger than that of the vent cross section of the air outlet end.
Wherein, because the inside and outside temperature difference of box 10, the air current that has formed gaseous 80 and got into the air flue from first income wind gap 101, after acceleration rate cooling tube 40, the ventilation cross sectional area of income wind end and the ventilation cross sectional area who is greater than the air-out end sum, what adopted is the principle of isentropic expansion, the air current passes through acceleration rate cooling tube 40 that sets up in the L type wind channel, because the passageway that has got into the convergence, the velocity of flow increases, pressure reduces, the air current has taken place adiabatic expansion in acceleration rate cooling tube, gaseous internal energy with self turns into kinetic energy, therefore gaseous temperature after flowing through acceleration rate cooling tube drops and the velocity of flow increases, also be exactly the isentropic flow, so the temperature of acceleration rate cooling tube 40 export can reduce, and the velocity of flow increases. The flow velocity of the gas 80 is increased, the temperature of the gas 80 is reduced, a better cooling effect is achieved, the cooling speed of the box body 10 is higher, the problem that the cooling efficiency is affected by inevitable gas loss caused by the problem of the structure of the box body is reduced, and therefore the cooling efficiency can be further improved. The box body composite cooling after the increasing speed and cooling pipe 40 is added is better in controllability compared with natural cooling or forced cooling by a fan, the influence of factors such as the size of the box body, the load, the use environment and the like is reduced, the cooling speed of the low-temperature section is more controllable, the difference of the cooling speed of the high-low temperature section is reduced, and the control stability of linear cooling of the full-temperature section is improved.
In one embodiment, a ratio of a ventilation cross-sectional area of the air outlet end to a ventilation cross-sectional area of the air inlet end of each ventilation hole is between 0.2 and 0.6, for example, the ratio of the ventilation cross-sectional area of the air outlet end to the ventilation cross-sectional area of the air inlet end may be 0.2, 0.3, 0.4, 0.5, 0.6. To provide better accelerated cool down performance. The ratio of the ventilation cross-sectional area of the air outlet end to the ventilation cross-sectional area of the air inlet end is between 0.2 and 0.6, for example, the ratio of the ventilation cross-sectional area of the air outlet end to the ventilation cross-sectional area of the air inlet end can be 0.2, 0.3, 0.4, 0.5 and 0.6. To provide better accelerated cool down performance.
In one embodiment, the distance between the air outlet end and the air inlet end of the speed-increasing and temperature-reducing pipe 40 is between 60mm and 135mm, for example, the distance between the air outlet end and the air inlet end of the speed-increasing and temperature-reducing pipe 40 may be 60mm, 80mm, 100mm, 120mm, 130mm, and 135 mm. To provide better accelerated cooling performance.
In one embodiment, as shown in FIGS. 2-3, the speed increasing cooling tube 40 includes a plurality of vents 401. The speed-increasing and temperature-reducing effects are improved. In one embodiment, the plurality of ventilation holes 401 are arranged in an array. Wherein, the ratio of the ventilation cross-sectional area of the air outlet end of each ventilation hole 401 to the ventilation cross-sectional area of the air inlet end is between 0.2 and 0.6. And the ratio of the ventilation cross-sectional area of the air outlet end to the ventilation cross-sectional area of the air inlet end is 0.2-0.6 on the whole of the speed-increasing and temperature-reducing pipe 40. Several ventilation holes 401 of the same size are illustrated in fig. 2-3. Alternatively, the sizes of the plurality of ventilation holes 401 may be different, and it is known that the following conditions are satisfied: the ratio of the ventilation cross-sectional area of the air outlet end of each ventilation hole 401 to the ventilation cross-sectional area of the air inlet end is between 0.2 and 0.6. The overall cross section of the speed-increasing and temperature-reducing pipe 40 is not particularly limited, and the cross section is circular as shown in fig. 2 to 3, and the speed-increasing and temperature-reducing pipe 40 may be square, rectangular, oval or other possible shapes.
The inventor finds that: set up heating device 50 in wind channel 301, air current 80 cools down heating device 50, because heating device 50 adopts the heater strip or the heating pipe heating methods that the multiseriate was arranged, heating device is heat uneven distribution on the whole, central zone temperature is high promptly, the marginal zone temperature that is close to wind channel 301 is lower, heating device 50 central zone temperature is high, the cooling demand is big, the marginal zone cooling demand is little, heating device 50 is if adopt same air current to cool down, it is asynchronous to lead to the cooling of the different regions of heating device 50, influence whole cooling rate.
In one embodiment, as shown in fig. 4, the number of the vents in the edge area of the speed-increasing and temperature-reducing pipe 40 is less than that of the vents in the center area, the number of the vents 401 in the center area is denser than that of the vents 401 in the edge area, and the area of the ventilation cross-section of the air inlet end and the area of the ventilation cross-section of the air outlet end of the edge area are less than that of the ventilation cross-section of the air inlet end and that of the air outlet end of the center area. Through the above-mentioned setting, the air current velocity of flow through heating device 50 central zone is big, the temperature is low, can provide bigger cooling ability, the air current velocity of flow through heating device 50 marginal zone is little, the temperature is slightly higher, can provide great cooling ability, can realize that the temperature drop in heating device 50 different regions is synchronous, improve and influence whole cooling rate, and when gaseous 80 flowed through marginal zone, provide the gas of the velocity of flow and temperature that is relatively high, can provide less cooling rate in the region that heating device 50 temperature is low, low velocity of flow is gaseous also can reduce the friction with the wind channel, reduce the gaseous energy loss of flowing through.
In one embodiment, the speed increasing and temperature reducing device comprises rotating fan blades 60. The flow rate of the gas 80 is increased, thereby increasing the rate of temperature reduction. The air 80 flows through the rotating fan 60 through the air duct 301, and can also be used for cooling the rotating fan 60.
In one embodiment, the rotation time of the rotating blade 60 is between 1s and 3s, for example, the rotation time of the rotating blade 60 may be 1s, 2s, or 3 s.
In one embodiment, the gas processing device further includes a heating device 50 disposed in the air duct 301 for heating the working area 20, and the gas 80 flows through the heating device 50 through the air duct 301 for cooling the heating device 50, so as to reduce the temperature from the source and increase the cooling rate. The heating device 50 adopts a heating mode of heating wires or heating pipes arranged in multiple rows.
The inventor finds that: the air duct 301 is designed in an L shape, the flow path of the cooling air flow is long, heat can be fully absorbed and taken away, the cooling rate is further improved, especially the cooling rate of a high-temperature section, the rapid cooling is realized, and the compact design of the equipment is facilitated, however, because the air duct 301 is designed in the L shape and has at least one corner, the air flow can be retarded during the air flow, the flow rate of the air is inevitably reduced, the first air inlet 101 is arranged at the top end of the box body, the flow direction of the inlet air is nearly vertical to the flow direction of the air in the air duct 301, the air is redirected, the flow rate of the air is also inevitably reduced, the flow path of the cooling air flow is long, the air is retarded and lost by the flow path, the flow rate of the air is also inevitably reduced, the natural air is introduced into the air duct 301 in the L shape to cool, and the refrigerating device 70 performs the composite cooling on the working section 20, compared with the natural cooling, the cooling rate is improved, but the inevitable gas loss is still brought by the fact that the gas at the corner and at the inlet impacts the wall of the box body in the flowing direction.
In a specific embodiment, as shown in fig. 6, a first flow guiding body 90 is disposed in the air duct 301, the first flow guiding body 90 includes a first protrusion 901, the first flow guiding body 90 is located in the air duct 301 below the first air inlet 101, the first protrusion 901 is used for changing a flow direction of air entering the first air inlet 101, and the first protrusion 901 is optionally arc-shaped and contacts with the air flow. The second baffle 100 is disposed at the corner, and the second baffle 100 includes a second protrusion 1001 and the second protrusion 1001, which may be arc-shaped, and is in contact with the airflow. The second protrusion 1001 is used to change the gas flow direction between the first air inlet 101 and the corner in the air duct 301. Through the setting of the above-mentioned bulge that contacts closely with the air current, the air current deviates from original flow direction, changes into along with the tendency that the bulge surface flows, and the bulge adsorbs the air current and changes the air current direction, and first bulge 901 changes the gas flow direction that gets into first income wind gap 101 makes its more smooth and easy entering acceleration rate cooling tube 40 entry, and corner air current direction deflects for downwards, has reduced because of the corner, some inevitable gas losses that strike box body part and bring on the entrance gas flow direction, can further improve cooling rate.
In a specific embodiment, the air 80 passes through the air duct 301 and flows through the speed-increasing and temperature-reducing pipe 40, the heating device 50 and the rotating fan 60 in sequence. The speed-increasing and temperature-reducing pipe 40 and the rotary fan blade 60 increase the flow velocity of the gas 80, and meanwhile, the gas 80 reduces the temperature of the heating device 50 and the rotary fan blade 60, so that the temperature reduction rate is further improved.
In a specific embodiment, the gas 80 enters the air duct 301 through the first air inlet 101, sequentially flows through the first flow guiding body 90, the speed increasing pipe 40, the heating device 50, the rotating fan 60, the second flow guiding body 100, and the refrigerating device 70, then enters the working space 20 through the second air inlet 201, and then exits the box 10 through the second air outlet 202 and the first air outlet 102 in sequence.
In a specific embodiment, the first air inlet 101 is located at the left end of the upper side of the box 10, the first air outlet 102 is located at the upper end of the left side of the box 10, the second air inlet 201 is located at the right side of the working space 20, and the second air outlet 202 is located at the left side of the working space 20, so as to increase the air flow and increase the cooling rate.
In one embodiment, the temperature change equipment is provided with the temperature sensor, so that temperature change data can be obtained quickly, the cost can be reduced, the cooling rate is increased, the experiment method is enriched, and more experiment conditions are met.
Example two
Provided is a cooling method of a temperature change device, comprising the following steps: the temperature change device of the first embodiment is adopted to cool the working area 20 therein.
In a specific embodiment, the first air inlet 101 and the first air outlet 102 are opened simultaneously, and the air 80 enters the air duct 301 through the first air inlet 101, sequentially flows through the speed-increasing and temperature-reducing pipe 40, the heating device 50, the rotating fan 60 and the refrigerating device 70, then enters the working space 20 through the second air inlet 201, and then exits the box 10 through the second air outlet 202 and the first air outlet 102 in sequence. Wherein, the speed-increasing and temperature-reducing pipe 40 increases the flow velocity of the gas 80; when the gas 80 flows through the heating device 50, the heating device 50 is cooled, and the temperature is reduced from the source; the rotating fan blade 60 can improve the flow velocity of the gas 80, and meanwhile, the gas 80 can cool the rotating fan blade 60; refrigerating plant 70 cools down to the workspace 20, also cools down to the gas 80 that flows through simultaneously, improves cooling rate, and gas 80 circulates in the workspace 20, can be more quick take away the heat in the workspace 20, and there is the air current in the workspace 20 inboard and outside moreover, further improvement cooling rate.
EXAMPLE III
Provided is a cooling method of a temperature change device, comprising the following steps: and cooling the working interval 20 in the temperature change equipment of the first embodiment.
In a specific embodiment, the rotating fan 60 is started, the first air inlet 101 and the first air outlet 102 are opened simultaneously, in order to increase the cooling rate in the high-temperature range, the rotating fan 60 operates for 3s, in order to reduce the difference in the cooling rate in the high-temperature and low-temperature ranges and increase the linear cooling control stability in the full-temperature range, the rotating fan 60 operates for 3s and is closed, the gas 80 enters the air duct 301 through the first air inlet 101, sequentially flows through the first flow guide body 90, the accelerated cooling pipe 40, the heating device 50, the rotating fan 60, the second flow guide body 100 and the refrigerating device 70, then enters the working range 20 through the second air inlet 201, and then is discharged out of the box 10 through the second air outlet 202 and the first air outlet 102 in sequence. The gas 80 flows through the first flow guiding body 90 and the second flow guiding body 100 to change the direction of the gas flow, so that the energy loss of the gas flow is reduced, and the speed-increasing cooling pipe 40 increases the flow speed of the gas 80 and reduces the temperature of the gas 80 so as to improve the cooling effect; when the gas 80 flows through the heating device 50, the heating device 50 is cooled, and the temperature is reduced from the source; the rotating fan blades 60 can improve the flow velocity of the gas 80, increase the initial power of the gas 80 circulation, improve the cooling rate of the high-temperature section, and simultaneously, the gas 80 can cool the rotating fan blades 60, so that the difference of the cooling rate of the high-temperature section and the cooling rate of the low-temperature section is reduced, and the linear cooling control stability of the full-temperature section is improved; refrigerating plant 70 cools down to the workspace 20, also cools down to the gas 80 that flows through simultaneously, improves cooling rate, and gas 80 circulates in the workspace 20, can be faster take away the heat in the workspace 20, and the workspace 20 inboard all has the air current with the outside moreover, further improvement cooling rate.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described above with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations. Thus, the above detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the product of the application is conventionally placed in use, and are used only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the present application, all the embodiments, implementations, and features of the present application may be combined with each other without contradiction or conflict. In the present application, conventional equipment, devices, components, etc. are either commercially available or self-made in accordance with the present disclosure. In this application, some conventional operations and devices, apparatuses, components are omitted or only briefly described in order to highlight the importance of the present application.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A temperature-varying apparatus, comprising:
the box body comprises a working area, an interlayer area is arranged between the box body and the working area, an air channel is arranged in the interlayer area, the box body comprises a first air inlet and a first air outlet, the working area comprises a second air inlet and a second air outlet, and the first air inlet and the second air inlet are arranged in a staggered mode;
the refrigerating device is arranged in the air duct and used for cooling the working area;
the air enters the air duct through the first air inlet, flows through the refrigerating device, enters the working area through the second air inlet, and is discharged out of the box body through the second air outlet and the first air outlet in sequence, and the cooling device is also used for cooling the air;
the wind channel is L type, includes 1 corner at least.
2. The temperature-varying device as claimed in claim 1, wherein the first air inlet and the first air outlet are disposed adjacent to each other, a baffle is disposed between the first air inlet and the first air outlet to prevent the gas from entering the box from the first air inlet and directly exiting the box through the first air outlet, and the second air inlet and the second air outlet are disposed on two opposite sides of the working space.
3. The temperature change equipment as claimed in claim 1, wherein the refrigerating device comprises a heat exchanger, and the heat exchange medium of the heat exchanger comprises one or more of gas and liquid.
4. The temperature-varying device according to claim 1, further comprising a speed-increasing and temperature-reducing device disposed in the air duct for speed-increasing and temperature-reducing the gas, wherein the speed-increasing and temperature-reducing device includes a speed-increasing and temperature-reducing pipe, the speed-increasing and temperature-reducing pipe includes one or more ventilation holes, the ventilation holes include an air inlet end and an air outlet end, and the ventilation cross-sectional area of the air inlet end and the ventilation cross-sectional area of the air outlet end are larger than the area of the air outlet end.
5. The temperature change device as claimed in claim 4, wherein the ratio of the ventilation cross-sectional area of the air outlet end to the ventilation cross-sectional area of the air inlet end of each ventilation hole is between 0.2 and 0.6; the ratio of the ventilation cross-sectional area of the air outlet end to the ventilation cross-sectional area of the air inlet end is 0.2-0.6; the distance between the air inlet end and the air outlet end is 60-135 mm.
6. The temperature-varying device as claimed in claim 5, wherein the number of the peripheral region vents of the speed-increasing and temperature-reducing pipe is smaller than that of the central region vents, and the sum of the ventilation cross-sectional areas of the air inlet end and the air outlet end of the peripheral region is smaller than that of the air inlet end and the air outlet end of the central region.
7. The temperature-varying apparatus according to claim 4, wherein the speed increasing device includes a rotary blade and a heating device, the heating device is disposed in the air duct and configured to heat the working area, and the gas passes through the heating device when passing through the air duct and is configured to cool the heating device.
8. The temperature change device according to claim 1, further comprising a first flow guiding body, wherein the first flow guiding body comprises a first protrusion, the first flow guiding body is located in the air channel at the lower part of the first air inlet, and the first protrusion is used for changing the flow direction of the air entering the first air inlet; and a second flow guide body is arranged at the corner, the second flow guide body comprises a second protruding part, and the second protruding part is used for changing the gas flowing direction between the first air inlet and the corner in the air duct.
9. A cooling method of temperature change equipment is characterized by comprising the following steps: the temperature change equipment as claimed in any one of claims 1 to 8 is adopted, and gas enters from the first air inlet, enters the working space through the L-shaped air duct and the refrigerating device, is cooled and then is discharged from the outlet.
10. The cooling method according to claim 9, wherein the rotating fan blade is started, the first air inlet and the first air outlet are opened, the rotating fan blade is operated for 1-3s and is closed, air enters the air duct through the first air inlet, sequentially flows through the first flow guide body, the speed-increasing cooling pipe, the heating device, the rotating fan blade and the refrigerating device, then enters the working space through the second air inlet, and then is discharged out of the box body through the second air outlet and the first air outlet sequentially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111660761.6A CN114963679B (en) | 2021-12-31 | Temperature change equipment and cooling method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111660761.6A CN114963679B (en) | 2021-12-31 | Temperature change equipment and cooling method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114963679A true CN114963679A (en) | 2022-08-30 |
| CN114963679B CN114963679B (en) | 2024-05-10 |
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