WO2021208397A1 - Appareil de déshumidification et de séchage et son procédé de fonctionnement - Google Patents

Appareil de déshumidification et de séchage et son procédé de fonctionnement Download PDF

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Publication number
WO2021208397A1
WO2021208397A1 PCT/CN2020/123109 CN2020123109W WO2021208397A1 WO 2021208397 A1 WO2021208397 A1 WO 2021208397A1 CN 2020123109 W CN2020123109 W CN 2020123109W WO 2021208397 A1 WO2021208397 A1 WO 2021208397A1
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WIPO (PCT)
Prior art keywords
evaporator
cavity
outlet
compressor
heat exchanger
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PCT/CN2020/123109
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English (en)
Chinese (zh)
Inventor
沈九兵
严思远
肖艳萍
谭牛高
李志超
陈育平
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江苏科技大学
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Publication of WO2021208397A1 publication Critical patent/WO2021208397A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
    • F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B1/00—Compression machines, plants or systems with non-reversible cycle
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00—Machines, plants or systems, using electric or magnetic effects
    • F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/006—Accumulators
    • 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
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/003—Supply-air or gas filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/08—Humidity

Definitions

  • the invention relates to the dehumidification, drying and drying of indoor air, in particular to a high-efficiency and energy-saving dehumidification and drying equipment with a heat source and a working method thereof.
  • the dehumidification dryer can be divided into freezing type and adsorption type. It can dehumidify the air and supply air at a temperature slightly higher than the ambient temperature. In the household field, due to space constraints, in order to save space, dehumidifiers are generally small in size. As the air passes through the surface cooler to dehumidify and cool, it is a heat and mass exchange process with both sensible and latent heat. The flow air is cooled down to the dew point temperature, but also to meet the dehumidification requirements of the air.
  • the load of the evaporator and the condenser varies greatly, and the traditional dehumidification dryer has a poor ability to adjust the load, so in some cases it can not even meet the normal Dehumidification requirements, poor comfort, provided heat can not meet the needs of drying or drying time is too long, practicality has been criticized for a long time.
  • the main factor restricting the application and development of dehumidification and drying equipment is that the load adjustment cannot keep up or the cost required to achieve the required dehumidification and drying purpose is too high, that is, low efficiency and uneconomical.
  • electric heating is used as a heat source for drying. Dry provides heat, the energy efficiency ratio is always less than 1, which is difficult to meet the requirements of drying, and the expense is greater than the benefit.
  • thermoelectric refrigeration with heating efficiency greater than 1 a heat source that replaces electric heating is developed and produced to provide sufficient drying equipment Heat supply can improve the energy efficiency of the entire machine while ensuring the stable operation of the machine. It is a top priority and is of great significance.
  • the purpose of the present invention is to provide a dehumidification drying equipment and a working method thereof that increase a second evaporator as a heat source and use a sensible heat exchanger to recover heat in response to ordinary users' needs for indoor environment dehumidification and drying of clothes.
  • the invention can overcome the problems of large power consumption and poor load regulation ability of the previous dehumidification drying equipment, reduce the load of the heat exchanger, and meanwhile the equipment has good load regulation ability.
  • a dehumidification drying equipment includes a housing 27 in which a first evaporator cavity 1, a second evaporator cavity 2, a refrigeration system cavity 3, an air processing cavity 4, and a circuit board control cavity 5 are arranged, Wherein the first evaporator cavity 1 is provided with a first evaporator 10, the second evaporator cavity 2 is provided with a second evaporator 15, a second filter 21 and a centrifugal fan 22, the refrigeration system cavity 3 A compressor 6 and a liquid storage tank 8 are provided.
  • the air processing chamber 4 is provided with a first filter screen 17, a sensible heat exchanger 18, a condenser 7, an axial flow fan 19, and a guide grid 20 from left to right.
  • An AC-DC converter 23a and a voltage regulator 23b are mounted on the circuit board 23 provided in the circuit board control cavity 5;
  • the circuit board 23 in the circuit board control cavity 5 is respectively connected to the compressor 6, the axial fan 19 and the centrifugal fan 22 through wires, and the AC/DC converter 23a and the voltage regulator 23b on the circuit board 23 are integrated When the circuit is turned on, the voltage regulator 23b is also connected to the thermoelectric cooling fin 15c in the second evaporator 15 through a wire to control the magnitude of the voltage applied to it;
  • the outlet of the compressor 6 in the refrigeration system cavity 3 is connected to the inlet of the condenser 7 through a pipe, the outlet of the condenser 7 is connected to the inlet of the liquid storage tank 8, and the outlet of the liquid storage tank 8 is connected to the inlet of the first throttle valve 9.
  • the outlet of the first throttle valve 9 is connected to the inlet of the first evaporator 10 in the first evaporator cavity 1, and the outlet of the first evaporator 10 is connected to the compressor 6 through the check valve 11 and the suction pressure regulating valve 12 in turn
  • a water receiving pan 26 is further provided under the first evaporator 10, and the water outlet of the water receiving pan 26 is connected to a water receiving device 25 arranged outside the housing 27 through a hose 24.
  • the outlet of the liquid storage tank 8 is also connected to the inlet of the second throttle valve 14 through the solenoid valve 13, the outlet of the second throttle valve 14 is connected to the inlet of the second evaporator 15, and the outlet of the second evaporator 15 passes through the evaporator in turn.
  • the pressure regulating valve 16 and the suction pressure regulating valve 12 are connected to the inlet of the compressor 6.
  • the second evaporator 15 is a cylindrical hollow structure, which is surrounded by a plurality of fins 15d, a plurality of thermoelectric cooling fins 15c, a copper tube 15b, and a first thermal insulation cotton 15a from the inside to the outside, wherein the thermoelectric cooling Both sides of the sheet 15c and the copper tube 15b are respectively coated with thermal conductive glue.
  • a second thermal insulation cotton 28 is filled between the first evaporator cavity 1 and the second evaporator cavity 2.
  • the water receiver 25 is a detachable water receiver with a visible liquid level.
  • the condenser 7 is a tube-fin heat exchanger, a micro-tube channel heat exchanger or an insert micro-channel heat exchanger.
  • the working method of the dehumidification drying equipment of the present invention includes two working modes of dehumidification and drying,
  • the compressor 6 is started, the axial fan 19 is started, the centrifugal fan 22 is closed, and the solenoid valve 13 is closed.
  • the refrigerant from the first evaporator 10 passes through the check valve 11 and the suction pressure regulating valve 12 and is sucked by the compressor 6 Compressed, heated and pressurized, discharged from the outlet of the compressor 6 into the condenser 7 and condensed into a liquid refrigerant, and then sent to the liquid storage tank 8 through a pipeline.
  • the liquid refrigerant flows out of the outlet of the liquid storage tank 8 and passes through the first section After the flow valve 9 throttling and depressurizing, it enters the first evaporator 10 to absorb heat and evaporate, and finally becomes a gaseous refrigerant, and is sucked and compressed by the compressor 6 through the check valve 11 and the suction pressure regulating valve 12, and enters the next cycle ;
  • the indoor air first passes through the first filter screen 17 to filter impurities and particulate matter, and then enters the sensible heat exchanger 18, and the incoming air enters the sensible heat exchanger 18 through the inlet a of the sensible heat exchanger 18, from The outlet b of the sensible heat exchanger 18 flows out and enters the first evaporator cavity 1 and performs heat exchange and dehumidification treatment with the first evaporator 10.
  • the dehumidified and cooled air flows out from the first evaporator cavity 1 and enters the sensible heat exchanger 18 c flows in, exchanges heat with the untreated indoor air, and flows out from the outlet d of the sensible heat exchanger 18, and then absorbs heat through the surface of the condenser 7 and is sent back to the indoor environment by the axial flow fan 19 through the guide grid 20, and the condensed water is connected by the The water pan 26 is caught and stored in the water receiver 25 through the hose 24;
  • the centrifugal fan 22 On the basis of the dehumidification mode, the centrifugal fan 22 is started, the solenoid valve 13 is opened, the AC-DC converter 23a and the voltage regulator 23b work. After the valve 9 throttling and depressurizing, it enters the first evaporator 10 to absorb heat and evaporate, and the other way flows through the solenoid valve 13 and then passes through the second throttle valve 14 for throttling and cooling and sending to the second evaporator 15 to absorb heat and evaporate.
  • the gaseous refrigerant passes through the check valve 11 and the evaporation pressure regulating valve 16 respectively, and is sucked and compressed by the compressor 6 through the suction pressure regulating valve 12, and enters the next cycle.
  • the gas In the second evaporator cavity 2, the gas first passes through the second evaporator cavity 2.
  • the second filter 21 filters, and then flows through the second evaporator 15 to absorb the cold energy of the second evaporator 15, and finally returns to the room through the centrifugal fan 22.
  • the power supply voltage of the thermoelectric cooling fins 15c in the second evaporator 15 is in a proportional adjustment relationship with the temperature of the air outlet at the guide grid 20 provided.
  • Figure 1 is a schematic diagram of the device system structure of the present invention.
  • 1 is the first evaporator cavity
  • 2 is the second evaporator cavity
  • 3 is the refrigeration system cavity
  • 4 is the air processing cavity
  • 5 is the circuit board control cavity
  • 6 is the compressor
  • 7 is the condensation 8 is the liquid storage tank
  • 9 is the first throttle valve
  • 10 is the first evaporator
  • 11 is the check valve
  • 12 is the suction pressure regulating valve
  • 13 is the solenoid valve
  • 14 is the second throttle valve
  • 16 is the evaporative pressure regulating valve
  • 17 is the first filter
  • 18 is the sensible heat exchanger
  • 19 is the axial flow fan
  • 20 is the guide grid
  • 21 is the second filter
  • 22 is the centrifugal fan
  • 23 is a circuit board
  • 23a is an AC-DC converter
  • 23b is a voltage regulator
  • 24 is a hose
  • 25 is a water receiver
  • 26 is a water tray
  • 27 is a shell
  • 28 is a second thermal
  • Figure 2 is a schematic diagram of the second evaporator structure
  • 15a is the first thermal insulation cotton
  • 15b is a copper tube
  • 15c is a thermoelectric cooling sheet
  • 15d is a fin.
  • FIG. 1 It is a dehumidification and drying equipment of the present invention, which includes a housing 27 in which a first evaporator cavity 1, a second evaporator cavity 2, a refrigeration system cavity 3, and air
  • the processing chamber 4 and the circuit board control chamber 5 the first evaporator chamber 1 is provided with a first evaporator 10, and the second evaporator chamber 2 is provided with a second evaporator 15, a second filter 21 and a centrifugal fan twenty two;
  • the refrigeration system cavity 3 is provided with a compressor 6 and a liquid storage tank 8, and the air processing chamber 4 is provided with a first filter 17, a sensible heat exchanger 18, a condenser 7, and an axial flow from left to right.
  • the circuit board 23 in the circuit board control cavity 5 is equipped with an AC/DC converter 23a and a voltage regulator 23b. All the cavities are installed in the housing 27 because of the second evaporation
  • the core component of the device 15 is the thermoelectric cooling plate 15c, so an AC-DC converter 23a is required to provide a DC voltage for it, and the voltage regulator 23b can provide voltages of different magnitudes as required.
  • the circuit board 23 is respectively connected to the compressor 6, the axial flow fan 19 and the centrifugal fan 22 through wires, and the AC/DC converter 23a and the voltage regulator 23b on the circuit board 23 are connected through an integrated circuit.
  • the voltage regulator 23b is also connected to the thermoelectric cooling fin 15c in the second evaporator 15 through a wire to control the voltage applied to it;
  • the outlet of the compressor 6 is connected to the inlet of the condenser 7 through a pipe, the outlet of the condenser 7 is connected to the inlet of the liquid storage tank 8, and the outlet of the liquid storage tank 8 is connected to the inlet of the first throttle valve 9 and the first throttle
  • the outlet of the flow valve 9 is connected to the inlet of the first evaporator 10 in the first evaporator cavity 1, and the liquid storage tank 8 can flexibly distribute the amount of circulating refrigerant according to the system load, so that the system is in an optimal operating state;
  • the outlet of the first evaporator 10 is connected to the inlet of the compressor 6 through a check valve 11 and a suction pressure regulating valve 12, a water receiving pan 26 is provided under the first evaporator 10, and the water outlet of the water receiving pan 26 is through a hose 24 is connected to a water receiver 25 arranged on the outside of the housing 27.
  • the outlet of the liquid storage tank 8 is also connected to the inlet of the second throttle valve 14 through the solenoid valve 13, the outlet of the second throttle valve 14 is connected to the inlet of the second evaporator 15, and the outlet of the second evaporator 15 passes through the evaporation pressure regulating valve in turn 16 and the suction pressure regulating valve 12 are connected to the inlet of the compressor 6, which is another circuit of the refrigeration system.
  • the second evaporator can be used as an additional heat source to increase the system's ability to adjust and adapt to the load.
  • the structure of the second evaporator 15 is a cylindrical hollow structure surrounded by a number of thermoelectric cooling fins 15c.
  • fins 15d, thermoelectric cooling fins 15c, copper tubes 15b and first Insulation cotton 15a in which the thermoelectric cooling sheet 15c and the copper tube 15b are coated with thermal conductive glue on both sides, the thermal conductive glue absorbs the heat generated by the hot end of the thermoelectric cooling sheet 15c to the maximum, and the fin 15d is more helpful
  • the flowing air absorbs the cold energy of the cold end of the thermoelectric cooling fin 15c, and the first thermal insulation cotton 15a avoids heat loss to the greatest extent.
  • the second thermal insulation cotton 28 is filled between the first evaporator cavity 1 and the second evaporator cavity 2 to avoid heat loss caused by cross-heating between the two cavities and increase the load of the heat exchanger.
  • a detachable water receiver 25 with visible liquid level is installed outside the housing 27.
  • the water receiver 25 is connected to a hose 24 through a quick connector, and the condensed water in the water tray 26 is drained to the water receiver through the hose 24.
  • the condensed water can be drained in time according to the height of the liquid level to avoid the accumulation of liquid in the water receiving tray 26.
  • the quick connector makes it more convenient to install and unload the water receiver 25.
  • the condenser 7 is a heat exchanger with high heat exchange efficiency and compactness, such as a tube-fin heat exchanger, a micro-tube channel heat exchanger, or an insert micro-channel heat exchanger. The need for heat exchange efficiency.
  • the working method of the dehumidification drying equipment of the present invention includes two working modes of dehumidification and drying,
  • the compressor 6 is started, the axial fan 19 is started, the centrifugal fan 22 is closed, and the solenoid valve 13 is closed.
  • the low-temperature and low-pressure gaseous refrigerant evaporated by the first evaporator 10 passes through the check valve 11 and the suction pressure regulating valve 12 in turn. It is sucked and compressed by the compressor 6, and the suction pressure regulating valve 12 can adjust the suction pressure into the compressor 6, avoiding an excessively high compression ratio and making the refrigeration system operate stably;
  • the high-temperature and high-pressure gas refrigerant is discharged from the outlet of the compressor 6, and then the high-temperature and high-pressure refrigerant enters the condenser 7 to release heat to the air flowing through the surface of the condenser 7 and condense into a liquid refrigerant, which is then sent through the pipeline
  • the liquid storage tank 8 mainly fills the refrigerant when the circulating refrigerant of the refrigeration system is insufficient, and appropriately stores the excess refrigerant when the refrigerant is excessive;
  • the liquid refrigerant flows out of the outlet of the liquid storage tank 8 and passes through the first throttle valve 9 to throttle and reduce pressure to become a gas-liquid two-phase refrigerant, and then the refrigerant enters the first evaporator 10 to absorb heat and evaporate in the first evaporator.
  • the outlet of the device 10 becomes a gaseous refrigerant, and finally the gaseous refrigerant is sucked into the compressor 6 again through the check valve 11 and the suction pressure regulating valve 12, and enters the next cycle;
  • the indoor air is first filtered through the first filter 17 to filter impurities and particulates, and the incoming air is filtered. This is not only the need for indoor air purification, but also considering that the particulates in the air will settle in heat exchange. Dirt thermal resistance is formed on the surface of the device, which affects the heat exchange efficiency of the equipment and ultimately increases the operating energy consumption of the system;
  • the air passing through the first filter screen 17 enters the sensible heat exchanger 18, the incoming air enters the sensible heat exchanger 18 through the inlet a of the sensible heat exchanger 18, and flows out from the outlet b of the sensible heat exchanger 18 and enters the first evaporator cavity.
  • 1 Perform heat exchange and dehumidification with the first evaporator 10.
  • the dehumidified and cooled air flows out of the first evaporator cavity 1 and flows in from the inlet c of the sensible heat exchanger 18, and exchanges heat with untreated indoor air from the sensible room.
  • the outlet d of the heat exchanger 18 flows out, and the two air flows in the sensible heat exchanger 18 cross heat exchange and are in indirect contact. There is only heat exchange but no humidity exchange to ensure the dehumidification effect;
  • a water receiving pan 26 is installed at the bottom of the first evaporator 10.
  • the pipe 24 is stored in the water receiver 25.
  • the centrifugal fan 22 On the basis of the dehumidification mode, the centrifugal fan 22 is started, the solenoid valve 13 is opened, the AC-DC converter 23a and the voltage regulator 23b work. After the valve 9 throttling and depressurizing, it enters the first evaporator 10 to absorb heat and evaporate, and the other way flows through the solenoid valve 13 and then passes through the second throttle valve 14 for throttling and cooling and sending to the second evaporator 15 to absorb heat and evaporate.
  • the gaseous refrigerant passes through the check valve 11 and the evaporation pressure regulating valve 16 respectively, and is sucked and compressed by the compressor 6 through the suction pressure regulating valve 12, and enters the next cycle.
  • the gas In the second evaporator cavity 2, the gas first passes through the second evaporator cavity 2.
  • the second filter screen 21 filters, and then flows through the second evaporator 15 to absorb the cold energy of the second evaporator 15, and finally returns to the room through the centrifugal fan 22.
  • the AC/DC converter 23a can be the thermoelectric cooling plate 15c in the second evaporator 15.
  • the voltage regulator 23b can adjust the voltage passing through the thermoelectric cooling fins 15c in the second evaporator 15. According to different load requirements, the voltage can be adjusted to increase or decrease the heat provided in the drying mode.
  • the power supply voltage of the thermoelectric cooling fins 15c in the second evaporator 15 is in a direct proportional adjustment relationship with the temperature of the air outlet at the guide grid 20.
  • the voltage regulator 23b adjusts the power supply voltage increase. High, when the temperature of the set air outlet decreases, the voltage regulator 23b adjusts the supply voltage to decrease.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Drying Of Solid Materials (AREA)
  • Drying Of Gases (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

Appareil de déshumidification et de séchage, comprenant une cavité de traitement d'air (4), une première et une seconde cavité d'évaporateur (1, 2), et une cavité de système de réfrigération (3). La cavité de traitement d'air (4) comporte de manière séquentielle un premier tamis filtrant (17), un échangeur de chaleur sensible (18), un condenseur (7), un ventilateur à flux axial (19) et une grille de guidage d'écoulement (20) ; un second évaporateur (15) présente une structure creuse en colonne et est pourvu de manière séquentielle, de l'intérieur vers l'extérieur, d'ailettes (15d), de feuilles de réfrigération thermoélectriques (15c), d'un tuyau de cuivre (15b) et d'un premier coton de conservation de chaleur (15a) ; deux côtés des feuilles de réfrigération thermoélectriques (15c) et le tuyau de cuivre (15b) sont revêtus de colle thermoconductrice ; une sortie d'un compresseur (6) est reliée de manière séquentielle au condenseur (7) et à un réservoir de stockage de liquide (8), puis divisée en deux trajets, un trajet étant relié de manière séquentielle à une première soupape d'étranglement (9) et à un premier évaporateur (10) et étant relié à une soupape de régulation de pression d'aspiration (12) au moyen d'un clapet de non-retour (11), et l'autre trajet étant relié à une seconde soupape d'étranglement (14) et au second évaporateur (15) au moyen d'une électrovanne (13) et étant finalement relié à la soupape de régulation de pression d'aspiration (12) au moyen d'une soupape de régulation de pression d'évaporation (16) ; une sortie de la soupape de régulation de pression d'aspiration (12) est reliée à une entrée du compresseur (6) ; et en guise de compensation de source de chaleur, le second évaporateur (15) réduit la consommation d'énergie du séchage tout en satisfaisant une exigence de charge, et l'échangeur de chaleur sensible (18) est utilisé pour pré-refroidir l'air entrant, améliorant ainsi l'efficacité énergétique d'un système et réduisant la consommation d'énergie.
PCT/CN2020/123109 2020-04-14 2020-10-23 Appareil de déshumidification et de séchage et son procédé de fonctionnement WO2021208397A1 (fr)

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CN202010290320.0A CN111503976B (zh) 2020-04-14 2020-04-14 一种除湿烘干设备及其工作方法

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