CN102392673B - Frostless-air cooling and dehumidification system and method - Google Patents
Frostless-air cooling and dehumidification system and method Download PDFInfo
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- CN102392673B CN102392673B CN201110277562.7A CN201110277562A CN102392673B CN 102392673 B CN102392673 B CN 102392673B CN 201110277562 A CN201110277562 A CN 201110277562A CN 102392673 B CN102392673 B CN 102392673B
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Abstract
The invention relates to a frostless-air cooling and dehumidification system and a method. The system comprises CO2 liquid storage tanks, a manual valve, a regenerator, a first constant-pressure valve, a cooling evaporator, a second constant-pressure valve, an electromagnetic valve, a graded temperature control valve bank, a pneumatic fan, CO adsorbent, CO2 adsorbent and a CO2 storage room, liquid CO2 is throttled and cooled for two times after cold energy is recovered by the preposed regenerator, so that the evaporator cannot be frosted and the cold energy can be prerecovered, the graded temperature control valve bank regulates the flow of the CO2 in the cooling and dehumidification system by grading, so that the evaporation capacity of the cooling evaporator and the refrigerating output of the cooling and dehumidification system can be controlled and the system load and the temperature in an escape capsule can be regulated by grading, the pneumatic fan drives the air in the escape capsule to circulate, and thereby the environment in the escape capsule can be controlled in conditions suitable for living.
Description
Technical field
The present invention relates under refrigeration and filed of air conditioning, particularly unregulated power supply condition, to the cool-down dehumidification device and method of extreme environment, is a kind of Frostless air cooling and dehumidifying system and method.
Background technology
The recent year accident of mine disaster takes place frequently, and the injures and deaths tragedy that invariably accompanies big and small, and miner's life security can not get ensureing.Investigation according to countries in the world to mine accident, in accidents such as fire, blasts, the dead miner that comes to harm of on-the-spot moment occurring only accounts for the part of accident casualty number, have quite a few miner to be all because after mine perviousness or fire, blast gug or flee from high temperature toxic and harmful scene in time, cause drowning, suffocate or be poisoned to death.After mine disaster occurs, the passage in mine can result in blockage because of landslide, gives the rescue work manufacture difficulty.And the underground ventilating therefore further caused is bad, temperature rising and carbon dioxide and toxic and harmful gathering gradually, the life security that is all threatening constantly stranded miner.Therefore, the urgent danger prevention facility of settling unregulated power to drive under mine is particularly important.When mine disaster occurs, the urgent danger prevention facility provides the confined space of a safety for the miner that can't withdraw in time.This emergency rescue capsule needs to resist outside blast impulse, high-temperature flue gas, isolated toxic and harmful; Simultaneously, body inside, cabin can also provide certain oxygen, food and drinking water for stranded miner, and various emergency survival instrument, medicine, can carry out cool-down dehumidification to indoor environment simultaneously, remove CO
2and purify the air treatment measure such as toxic and harmful, when for stranded miner, providing life condition, also for rescue work, gain time to greatest extent.
Adopt at present CO
2the refrigeration cool-down system driven, because of CO
2the throttling back pressure is without control, causes that cooling evaporator external temperature is too low and frosting has seriously hindered the system stability reliability service, affect refrigeration, affect interchange of heat, so necessary, defrosts.Existing Defrost method, general adopt to shut down carry out electric defrosting or artificial defrosting, these two kinds of methods all exist be difficult to accept defect, although as very fast as electric heated defrosting, need extra electric heating that the heat of heating is provided; Artificial defrosting is wasted time and energy; For survival capsule, itself unregulated power drives, Electric heating obviously is not suitable for this, once and the refrigeration cool-down system is out of service, serious threat is to the personnel's of taking refuge life security, therefore existing refrigeration cool-down system is for survival capsule, how in the situation that non-transformer, system requirements continuous service solve frosting is a problem that must solve.
Summary of the invention
The problem to be solved in the present invention is: emergency rescue capsule need to carry out cool-down dehumidification to indoor environment, remove CO
2and purify the air treatment such as toxic and harmful, existing CO
2there is the frosting problem in the refrigeration cool-down system driven, make the refrigeration cool-down system reliable and stablely to move, and existing Defrost mode can not meet the application demand of survival capsule.
Technical scheme of the present invention is: a kind of Frostless air cooling and dehumidifying system, be arranged on survival capsule inside, and comprise CO
2fluid reservoir, hand-operated valve, regenerator, the first constant pressure valve, cooling evaporimeter, the second constant pressure valve, electromagnetic valve, temperature classification control valve group, Pneumatic fan, CO adsorbent, CO
2adsorbent and CO
2between storage, CO
2fluid reservoir is arranged on CO
2inner between storage, liquid CO
2be stored in fluid reservoir, described temperature classification control valve group is composed in parallel by a plurality of hand-operated valves; Liquid CO
2through hand-operated valve, regenerator, the first constant pressure valve, then enter the cooling evaporimeter successively, absorb heat in survival capsule, the gaseous state CO after evaporation
2through the second constant pressure valve, be delivered to again in regenerator, with the liquid CO through the hand-operated valve input by fluid reservoir
2heat exchange in regenerator, the gaseous state CO after heat exchange
2by electromagnetic valve input temp staged control valve group, then export Pneumatic fan to, drive the Pneumatic fan running, temperature classification control valve group is for controlling gaseous state CO
2flow, cooling evaporimeter, CO adsorbent and CO
2adsorbent is arranged on the wind direction of Pneumatic fan, and Pneumatic fan drives air circulation in survival capsule, makes air stream through cooling evaporimeter, CO adsorbent and CO
2adsorbent; CO after the driving Pneumatic fan
2gas is delivered to CO
2between storage, then by CO
2survival capsule is discharged in outlet between storage; Liquid CO wherein
2throttling to 3.05 in the first constant pressure valve ± 0.05MPa, the gaseous state CO of the second constant pressure valve to the cooling evaporator outlet
2second throttle is to the required driving pressure of Pneumatic fan.
Delivery outlet and regenerator gaseous state CO at the cooling evaporimeter
2delivery outlet is respectively arranged with the first safety valve and the second safety valve, and the first safety valve is in parallel with the second constant pressure valve, and the second safety valve and electromagnetic valve, temperature classification control valve group, Pneumatic fan are in parallel.
Method based on above-mentioned a kind of Frostless air cooling and dehumidifying system is carried out twice throttling cooling in temperature-fall period, and preventing frosting, by liquid CO
2be stored in fluid reservoir, after opening hand-operated valve, liquid CO
2the regenerator of flowing through, in regenerator with the gaseous state CO completed after the cooling and dehumidifying function
2carry out heat exchange, make liquid CO
2cross coldly to reclaim cold, and then improve its specific refrigerating effect; Cross the liquid CO after cold
2by after the first constant pressure valve throttling, entering the cooling evaporimeter, set CO
2evaporating pressure is 3.05 ± 0.05MPa, gas-liquid two-phase state CO
2absorb heat gasification in survival capsule, then through the second constant pressure valve second throttle the driving pressure to the required use of Pneumatic fan, second throttle cooling CO afterwards
2gas and the liquid CO out from fluid reservoir
2heat exchange in regenerator; The throttling of the first constant pressure valve guarantees liquid CO
2pressure phase transition, thus the evaporator surface temperature that makes to lower the temperature is avoided surperficial frosting more than 0 ℃; CO
2in the second constant pressure valve, second throttle is to the required pressure of Pneumatic fan, then realizes preposition cold recovery in regenerator by heat exchange; Gaseous state CO after heat exchange
2be delivered to temperature classification control valve group through electromagnetic valve, then the running of output driving Pneumatic fan, temperature classification control valve group is regulated CO in cooling and dehumidifying system by the switching classification of controlling a plurality of hand-operated valves
2flow, and the air quantity of Pneumatic fan, thereby control the evaporation capacity in the cooling evaporimeter, and control cooling and dehumidifying system refrigerating capacity, realize temperature in classification regulating system load and cabin, the first constant pressure valve and the second constant pressure valve are adjusted according to the switching classification interlock of temperature classification control valve group, the constant pressure of setting of keeping system; The Pneumatic fan running drives air circulation in survival capsule, makes air stream through cooling evaporimeter, CO adsorbent and CO
2adsorbent, realize cool-down dehumidification and purification filtering circulation; Low pressure CO after the driving Pneumatic fan
2gas leads to CO again
2between storage, play and reduce CO
2the effect of fluid reservoir environment temperature, finally by CO
2outlet between storage is discharged outside survival capsule.
Delivery outlet and regenerator gaseous state CO at the cooling evaporimeter
2delivery outlet is respectively arranged with the first safety valve and the second safety valve, and when cooling evaporimeter internal pressure exceeds setting value, the first safety valve is opened bypass segment CO automatically
2gas carries out pressure release; When the regenerator internal pressure surpasses can perhaps being worth of setting, the second safety valve is opened bypass segment CO automatically
2gas carries out pressure release.
Cooling arranges the first pressure meter and the second pressure meter for observing the system pressure in the first constant pressure valve and the second constant pressure valve exit.
The present invention is directed to the deficiencies in the prior art, propose a kind of Frostless air cooling and dehumidifying system and cool-down dehumidification method thereof, carry out cool-down dehumidification for the emergency rescue capsule to environment such as mines, liquid CO
2reclaim cold through preposition regenerator and lower the temperature by twice throttling, reach the purpose of evaporimeter frost-free and the preposition recovery of cold, make refrigeration cool-down system stability reliability service.Further, can, according to the height of temperature in the demand to cold or survival capsule, by regulating temperature classification control valve group number, carry out CO in the regulating system pipeline
2flow and the air quantity of Pneumatic fan, thereby control the evaporation capacity in evaporimeter, reach the purpose of temperature in classification regulating system load and cabin, indoor environment is controlled under suitable life condition, for mine disaster rescue is striven for the time of more growing simultaneously.
Beneficial effect of the present invention is:
1, the invention solves the frosting problem of evaporimeter: control the liquid CO after a throttling
2be 3.05 ± 0.05MPa, make CO
2temperature is more than-5 ℃ when phase transformation for liquid, and the evaporation hull-skin temperature, more than 0 ℃, approaches 0 ℃, thereby fundamentally avoids the generation of frosting; Gaseous state CO after second throttle
2in regenerator to fluid reservoir liquid CO out
2carried out coldly, and realized the preposition recovery of cold, thereby increased specific refrigerating effect, and then take full advantage of stored CO
2cold; Frostless air cooling and dehumidifying system of the present invention has fundamentally been avoided the ubiquitous frosting problem of refrigeration system; do not need to shut down and carry out defrosting work; the cryogenic temperature of Frostless air cooling and dehumidifying system has been controlled in twice throttling on the one hand, avoids frost, makes on the other hand liquid CO
2cold thoroughly discharge fully, liquid CO
2the cold total amount discharged is certain, and disposable release easily brings the frosting problem, and the present invention carrys out CO in constant system by constant pressure valve
2flow, guarantee the refrigeration work that carries out of system stability, realize the preposition recovery of cold by regenerator in addition, improved liquid CO
2the utilization rate of the cold discharged; Frostless air cooling and dehumidifying system of the present invention neither be simply to CO in system
2controlled, consider the actual needs of survival capsule, the operation of Frostless air cooling and dehumidifying system should adapt to the needs of real time environment state, controls liquid CO
2use amount so that the Frostless air cooling and dehumidifying system can work the as far as possible long time, for example personnel's number can affect the temperature environment in survival capsule, need how many adjustment cooling-down effects according to the personnel that take refuge, in order to avoid excessively lower the temperature or lower the temperature deficiency, the present invention is provided with temperature classification control valve group, only need the simple switching of controlling several hand-operated valves in temperature classification control valve group, can be to gaseous state CO
2flow carry out grading control, simple operation, so the operation of Frostless air cooling and dehumidifying system of the present invention is dynamic, wherein CO
2flow change.The present invention under the system environments of dynamic operation, Adaptive Control CO
2pressure, thereby avoid frosting, maintain system stable operation simultaneously, make the application of refrigeration system in survival capsule meet various physical conditions, the present invention is to the structure and the operation method thereof that obtain considered and weigh design for rescue capsule refrigerating cool-down dehumidification mode after.
2, in the system running, control system of the present invention has multistage adjustable function: according to the variation to temperature in the demand of cold or survival capsule by the lifesaver, by regulating temperature classification control valve group, CO in the control system pipeline
2flow and the air quantity of Pneumatic fan, thereby control the evaporation capacity in the cooling evaporimeter, reach the purpose of temperature in classification regulating system load and cabin, and air in survival capsule realized to cool-down dehumidification and purification filtering circulate; Secondly, when the system constant load moves, when in cabin, temperature is lower than design temperature, electromagnetic valve cuts out (this electromagnetic valve has storage battery power supply), make system out of service to stop the continuation decline of temperature, otherwise when in cabin, temperature is higher than design temperature, electromagnetic valve is opened.Above-mentioned two functions can make the liquid CO quantitatively stored
2cold-producing medium is issued to the use of maximum duration in guarantor's limit of life situation, to maintain longer rescue time.
The accompanying drawing explanation
The structure chart that Fig. 1 is system of the present invention.
Fig. 2 is CO
2refrigeration system pressure-enthalpy diagram.
The specific embodiment
Below in conjunction with embodiment, the present invention is described.
1, system forms
As shown in Figure 1, system of the present invention is arranged on survival capsule inside, comprises CO
2fluid reservoir 1, hand-operated valve 2, regenerator 3, the first constant pressure valve 4, cooling evaporimeter 6, the second constant pressure valve 7, electromagnetic valve 10, temperature classification control valve group 12, Pneumatic fan 13, CO adsorbent 14, CO
2adsorbent 15 and CO
2between storage 16.CO
2fluid reservoir 1 is placed on CO
216 inside between storage, liquid CO
2be stored in fluid reservoir 1, described temperature classification control valve group 12 is composed in parallel by a plurality of hand-operated valves.Liquid CO
2through hand-operated valve 2, regenerator 3, the first constant pressure valve 4, then enter cooling evaporimeter 6 successively, absorb heat in survival capsule, change gaseous state CO into
2, gaseous state CO
2through the second constant pressure valve 7, be delivered to again in regenerator 3, with the liquid CO through hand-operated valve 2 inputs from fluid reservoir 1
2heat exchange in regenerator 3, the gaseous state CO after heat exchange
2 electromagnetic valve 10 and the temperature classification control valve group of flowing through 12 rear drive Pneumatic fans 13 runnings, temperature classification control valve group 12 is for controlling gaseous state CO
2flow, and the air quantity of Pneumatic fan, thus evaporation capacity and the cooling and dehumidifying system refrigerating capacity in the cooling evaporimeter controlled, realize temperature in the classification adjusting cabin; Cooling evaporimeter 6, CO adsorbent 14 and CO
2adsorbent 15 is arranged on the wind direction of Pneumatic fan 13, and Pneumatic fan 13 drives air circulation in survival capsule, makes air stream through cooling evaporimeter 6, CO adsorbent 14 and CO
2adsorbent 15; CO after driving Pneumatic fan 13
2gas is delivered to CO
2between storage 16, then by CO
2between storage, survival capsule is discharged in 16 outlet; The liquid CO of 4 pairs of inflows of the first constant pressure valve wherein
2throttling, control CO
2evaporating pressure is 3.05 ± 0.05MPa, the gaseous state CO that the second 7 pairs of constant pressure valves cooling evaporimeter 6 flows out
2carry out second throttle, control the driving pressure that the constant pressure valve outlet pressure is the required use of Pneumatic fan, the driving pressure here requires to determine according to the Pneumatic fan inlet pressure of selecting.Liquid CO
2after reclaiming cold, preposition regenerator 3 respectively through the first constant pressure valve 4 and second constant pressure valve 7 twice throttling coolings, reaches the purpose of evaporimeter frost-free and the preposition recovery of cold.CO
2fluid reservoir 1 is placed on CO
216 inside between storage, by the CO discharged
2to 16 being lowered the temperature between storing.
In order to guarantee evaporimeter 6 and the interior CO of regenerator 3
2gas is safe and reliable to operation, at outlet and the regenerator 3 gaseous state CO of evaporimeter 6
2outlet is respectively arranged with the first safety valve 9 and the second safety valve 11, the first safety valves 9 are in parallel with the second constant pressure valve 7, and the second safety valve 11 and electromagnetic valve 10, temperature classification control valve group 12, Pneumatic fan 13 are in parallel.When evaporimeter 6 internal pressures exceed setting value, the first safety valve 9 is opened automatically, carries out pressure release; When regenerator 3 internal pressures surpass can perhaps being worth of setting, the second safety valve 11 is opened automatically, carries out pressure release.
Be provided with between the first constant pressure valve 4 and evaporimeter 6 between the first pressure meter 5, the second constant pressure valves 7 and regenerator 3 and be provided with the second pressure meter 8, be respectively used to observe the system pressure in the first constant pressure valve 4 and the second constant pressure valve 7 exits.
As shown in system pressure-enthalpy diagram as of the present invention as Fig. 2, the letter in Fig. 2 represents CO
2cold-producing medium is in the duty point at each position, corresponding with institute's cursor position in Fig. 1.Liquid CO
2being stored in fluid reservoir 1 is state A, after opening hand-operated valve 2, and the liquid CO of state A
2the cold-producing medium regenerator 3 of flowing through, in regenerator 3 with the gaseous state CO of state E
2carry out heat exchange, make liquid CO
2crossing cold is state B; Cross cold rear liquid CO
2by the first constant pressure valve 4 throttlings, the gas-liquid two-phase admixture C that to become constant pressure be 3.05 ± 0.05MPa, enter heat in the rear absorption survival capsule of cooling evaporimeter 6 and gasify as state D; The gaseous state CO of state D
2be throttled to and drive the required pressure of Pneumatic fan, now gaseous state CO by the second constant pressure valve 7 again
2for state E; The gaseous state CO of state E
2enter regenerator 3, the liquid CO of absorbing state A
2the part sensible heat and temperature rise to state F; The gaseous state CO of state F
2after electromagnetic valve 10 and the temperature classification control valve group 12 of flowing through again, drive Pneumatic fan 13, make the interior air stream of survival capsule through CO adsorbent 14 and CO
2adsorbent 15 and cooling evaporimeter 6, realize purification filtering and the cool-down dehumidification of air, and simultaneously, circulating of air makes temperature in cabin more be tending towards even; CO through Pneumatic fan 13
2gas is state G, flows into CO
2between storage 16, to the CO in 16 between storing
2fluid reservoir 1 carries out cooling rear discharge out of my cabin.
In system of the present invention, the bypass line at the first safety valve 9 and the second safety valve 11 places is mainly that taking into account system safely and steadily runs.When the second constant pressure valve 7 misoperations, regulate malfunctioningly or while breaking down, can cause cooling evaporimeter 6 hypertonia; When electromagnetic valve 10 or temperature classification control valve group 12 or Pneumatic fan 13 misoperations, regulate malfunctioningly or while breaking down, can cause regenerator 3 hypertonia.For avoiding the generation of these phenomenons, system configuration bypass line, and controlled by the first safety valve 9 and the second safety valve 11, as to set the first safety valve 9 arrival end pressure preset values be 3.1MPa, the second safety valve 11 arrival end pressure preset values are 0.4MPa, when surpassing preset value, safety valve is opened automatically, carries out pressure release.
2, system is controlled
1) acting as of the first constant pressure valve 4 controlled evaporating pressure to guarantee the surperficial frost-free of cooling evaporimeter 6.After the survival capsule internal loading changes, the liquid CO in cooling evaporimeter 6
2corresponding variation can occur in amount of vaporization, the first constant pressure valve 4 can be regulated its aperture automatically according to the height of evaporating pressure, and when pressure raises, the aperture of valve reduces automatically, otherwise automatically increase, thereby regulate by the pressure in its exit of automatic constant the liquid supply rate that enters cooling evaporimeter 6.
2) system can also be carried out artificial multistage adjusting by temperature classification control valve group 12.Trapped personnel can be regulated temperature classification control valve group 12 according to the temperature in survival capsule or number, as: system is pressed the 12 people's designs of survival capsule quota, when cabin, internal loading is less,, only needs in open temp staged control valve group 12 at for example 1/3 o'clock of the not enough quota number of number.Along with the increase of load or number, can open step by step another two control valves; Otherwise can by opening opposite sequence, close step by step.By regulating CO in temperature classification control valve group 12 control systems
2flow and the rotating speed of pneumatic fan.After regulating 12 actions of temperature classification control valve group, by the chain control of the first constant pressure valve 4 and the second constant pressure valve 7, make temperature classification control valve group 12 front constant pressures, simultaneously, along with temperature classification control valve group 12 is opened one by one, downstream pressure raises, and causes the CO of the Pneumatic fan 13 of flowing through
2flow increases, and its rotating speed improves, air quantity increases.Finally, CO in cooling evaporimeter 6
2the increase of the increase of flow and Pneumatic fan 13 air quantity, make cooling evaporimeter 6 evaporation capacity increase, and increases refrigerating capacity and also increase thereupon.
3) electromagnetic valve 10 is for the machine of stopping (by storage battery power supply) of control system.When system, when constant load moves, in survival capsule, temperature is once reach preset temperature, and electromagnetic valve 10 cuts out, and makes system out of service to stop the continuation decline of temperature; Otherwise when in cabin, temperature is elevated to preset value, electromagnetic valve 10 recovers to open, and system restarts operation.
The present invention adopts CO
2as cold-producing medium, utilize liquid CO
2two phase evaporation endothermics after the throttling cooling, for escape capsule of mine provides necessary cold, and pass through constant pressure valve grading control evaporating pressure with preventing frosting.The gaseous state CO of second throttle cooling gained after gasification
2high-pressure liquid CO in regenerator and fluid reservoir outflow
2carry out heat exchange, play the effect of the preposition recovery of cold, flow through afterwards electromagnetic valve and temperature classification control valve, for Pneumatic fan provides power.By Pneumatic fan, make air in survival capsule pass through successively CO adsorbent, CO
2adsorbent and cooling evaporimeter are realized purification filtering and the cool-down dehumidification of air in cabin.By the machine of stopping of electromagnetic valve controlling system, temperature classification control valve group is regulated CO
2temperature in flow and cabin.With existing CO
2the refrigeration cool-down system driven is compared, and the present invention proposes a kind of classification reducing pressure by regulating flow and preposition cold recovery technology, controls CO
2thereby evaporating pressure reach the frostless purpose of evaporator external.By the rational deployment system architecture, fundamentally avoided the problems such as evaporimeter frosting, Load Regulation difficulty and the easy superpressure of system generation.
Claims (4)
1. a Frostless air cooling and dehumidifying system, is characterized in that being arranged on survival capsule, comprises CO
2fluid reservoir (1), hand-operated valve (2), regenerator (3), the first constant pressure valve (4), cooling evaporimeter (6), the second constant pressure valve (7), electromagnetic valve (10), temperature classification control valve group (12), Pneumatic fan (13), CO adsorbent (14), CO
2adsorbent (15) and CO
2between storage (16), CO
2fluid reservoir (1) is arranged on CO
2(16) inside between storage, liquid CO
2be stored in fluid reservoir (1), described temperature classification control valve group (12) is composed in parallel by a plurality of hand-operated valves; Liquid CO
2through hand-operated valve (2), regenerator (3), the first constant pressure valve (4), then enter cooling evaporimeter (6) successively, absorb heat in survival capsule, the gaseous state CO after evaporation
2through the second constant pressure valve (7), be delivered to again in regenerator (3), with the liquid CO through hand-operated valve (2) input by fluid reservoir (1)
2heat exchange in regenerator (3), the gaseous state CO after heat exchange
2by electromagnetic valve (10) input temp staged control valve group (12), then export Pneumatic fan (13) to, drive Pneumatic fan (13) running, temperature classification control valve group (12) is for controlling gaseous state CO
2flow, cooling evaporimeter (6), CO adsorbent (14) and CO
2adsorbent (15) is arranged on the wind direction of Pneumatic fan (13), and Pneumatic fan (13) drives air circulation in survival capsule, makes air stream through cooling evaporimeter (6), CO adsorbent (14) and CO
2adsorbent (15); CO after driving Pneumatic fan (13)
2gas is delivered to CO
2between storage (16), then by CO
2between storage, survival capsule is discharged in the outlet of (16); Liquid CO wherein
2throttling to 3.05 ± 0.05MPa in the first constant pressure valve (4), the gaseous state CO of the second constant pressure valve (7) to cooling evaporimeter (6) outlet
2second throttle is to the required driving pressure of Pneumatic fan.
2. a kind of Frostless air cooling and dehumidifying system according to claim 1, is characterized in that delivery outlet and regenerator (3) gaseous state CO at cooling evaporimeter (6)
2delivery outlet is respectively arranged with the first safety valve (9) and the second safety valve (11), the first safety valve (9) is in parallel with the second constant pressure valve (7), and the second safety valve (11) and electromagnetic valve (10), temperature classification control valve group (12), Pneumatic fan (13) are in parallel.
3. the cool-down dehumidification method based on the described a kind of Frostless air cooling and dehumidifying system of claim 1 or 2, is characterized in that carrying out twice throttling cooling in temperature-fall period, and preventing frosting, by liquid CO
2be stored in fluid reservoir (1), after opening hand-operated valve (2), liquid CO
2the regenerator (3) of flowing through, in regenerator (3) with complete the cooling and dehumidifying function after gaseous state CO
2carry out heat exchange, make liquid CO
2cross coldly to reclaim cold, and then improve its specific refrigerating effect; Cross the liquid CO after cold
2by entering cooling evaporimeter (6) after the first constant pressure valve (4) throttling, set CO
2evaporating pressure is 3.05 ± 0.05MPa, gas-liquid two-phase state CO
2absorb heat gasification in survival capsule, then through the second constant pressure valve (7) second throttle the driving pressure to the required use of Pneumatic fan, second throttle cooling CO afterwards
2gas and the liquid CO out from fluid reservoir (1)
2heat exchange in regenerator (3); The throttling of the first constant pressure valve (4) guarantees liquid CO
2pressure phase transition, thus evaporimeter (6) surface temperature that makes to lower the temperature is avoided surperficial frosting more than 0 ℃; CO
2in the second constant pressure valve (7), second throttle is to the required pressure of Pneumatic fan (13), then realizes preposition cold recovery by heat exchange in regenerator (3); Gaseous state CO after heat exchange
2be delivered to temperature classification control valve group (12) through electromagnetic valve (10), then output driving Pneumatic fan (13) running, temperature classification control valve group (12) is regulated CO in cooling and dehumidifying system by the switching classification of controlling a plurality of hand-operated valves
2flow, and the air quantity of Pneumatic fan (13), thereby control the evaporation capacity in cooling evaporimeter (6), and control cooling and dehumidifying system refrigerating capacity, realize temperature in classification regulating system load and cabin, the first constant pressure valve (4) and the second constant pressure valve (7) are adjusted according to the switching classification interlock of temperature classification control valve group (12), the constant pressure of setting of keeping system; Pneumatic fan (13) running drives air circulation in survival capsule, makes air stream through cooling evaporimeter (6), CO adsorbent (14) and CO
2adsorbent (15), realize cool-down dehumidification and purification filtering circulation; Low pressure CO after driving Pneumatic fan (13)
2gas leads to CO again
2between storage (16), play and reduce CO
2the effect of fluid reservoir (1) environment temperature, finally by CO
2between storage, the outlet of (16) is discharged outside survival capsule.
4. cool-down dehumidification method according to claim 3, is characterized in that delivery outlet and regenerator (3) gaseous state CO at cooling evaporimeter (6)
2delivery outlet is respectively arranged with the first safety valve (9) and the second safety valve (11), and when cooling evaporimeter (6) internal pressure exceeds setting value, the first safety valve (9) is opened bypass segment CO automatically
2gas carries out pressure release; When regenerator (3) internal pressure surpasses can perhaps being worth of setting, the second safety valve (11) is opened bypass segment CO automatically
2gas carries out pressure release.
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| CN201110277562.7A CN102392673B (en) | 2011-09-19 | 2011-09-19 | Frostless-air cooling and dehumidification system and method |
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| CN201110277562.7A CN102392673B (en) | 2011-09-19 | 2011-09-19 | Frostless-air cooling and dehumidification system and method |
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| CN102644474A (en) * | 2012-04-25 | 2012-08-22 | 大连亿斯德制冷设备有限公司 | Mobile cooling refrigeration device for mine |
| CN102720524A (en) * | 2012-06-30 | 2012-10-10 | 长治清华机械厂 | Cooling and dehumidifying device of escape capsule |
| DE102012019699B4 (en) * | 2012-10-06 | 2016-12-22 | Dräger Safety AG & Co. KGaA | Personal protection system and method for operating a personal protection system |
| DE102012019700B3 (en) * | 2012-10-06 | 2014-03-06 | Dräger Safety AG & Co. KGaA | Personal protection system, particularly escape chamber for personal protection in hazardous areas of mining industry, has main room and carbon dioxide absorber provided for absorption of carbon dioxide from ambient air of main room |
| CN102877878B (en) * | 2012-10-08 | 2014-10-15 | 南京玖壹环境科技有限公司 | Multiple-gas-source-driven refuge chamber refrigeration and purification system and refrigeration and purification method thereof |
| CN102877879A (en) * | 2012-10-16 | 2013-01-16 | 周振芳 | Mining escape capsule refrigerating system and method |
| CN102966366B (en) * | 2012-12-04 | 2016-01-06 | 中煤科工集团重庆研究院有限公司 | Mining cold-storage and carbon dioxide manifold type refrigeration system and method |
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| DE3839267A1 (en) * | 1988-11-21 | 1990-05-23 | Draegerwerk Ag | MODULAR PROTECTIVE CHAMBER FOR UNDERGROUND |
| JP2003130391A (en) * | 2001-10-18 | 2003-05-08 | Sanyo Electric Co Ltd | Air conditioner |
| CN1271384C (en) * | 2004-12-28 | 2006-08-23 | 华南理工大学 | Self-folding type air source heat pump water heater |
| CN102011608B (en) * | 2010-12-15 | 2012-07-25 | 东南大学 | Air cooling, dehumidifying and purifying system and method |
| CN202304064U (en) * | 2011-09-19 | 2012-07-04 | 东南大学 | Frostless air temperature reduction and dehumidification system |
-
2011
- 2011-09-19 CN CN201110277562.7A patent/CN102392673B/en not_active Expired - Fee Related
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