WO2007009488A1 - Appareil de deshumidification et procede pour deshumidifier l'air - Google Patents

Appareil de deshumidification et procede pour deshumidifier l'air Download PDF

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Publication number
WO2007009488A1
WO2007009488A1 PCT/EP2005/012172 EP2005012172W WO2007009488A1 WO 2007009488 A1 WO2007009488 A1 WO 2007009488A1 EP 2005012172 W EP2005012172 W EP 2005012172W WO 2007009488 A1 WO2007009488 A1 WO 2007009488A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
heat exchanger
dehumidifying
precooler
cooled
Prior art date
Application number
PCT/EP2005/012172
Other languages
German (de)
English (en)
Inventor
Dagobert Girardelli
Bernhard Stipsits
Original Assignee
Dagobert Girardelli
Bernhard Stipsits
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP20050015566 external-priority patent/EP1676623B8/fr
Application filed by Dagobert Girardelli, Bernhard Stipsits filed Critical Dagobert Girardelli
Publication of WO2007009488A1 publication Critical patent/WO2007009488A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1405—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification in which the humidity of the air is exclusively affected by contact with the evaporator of a closed-circuit cooling system or heat pump circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0033—Other features
    • B01D5/0039—Recuperation of heat, e.g. use of heat pump(s), compression
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • B01D53/265—Drying gases or vapours by refrigeration (condensation)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/153—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/1701—Component parts, details or accessories; Auxiliary operations using a particular environment during moulding, e.g. moisture-free or dust-free

Definitions

  • the invention relates to a dehumidifying device for generating dry air with a precooler, in which the air is pre-cooled, and a main cooler, which is downstream of the pre-timer and in which the air is cooled with deposition of condensation water on.
  • the invention further relates to a method for dehumidifying air, wherein the air is pre-cooled in a precooler and then further cooled in a main cooler the air and thereby condensate is deposited.
  • Known devices are equipped with a pre-cooler, which is fed with cold water from the customer's cold water system. This is usually a tap water connection. Such devices are also referred to as "chillers". Since a lot has to be cooled in the plastics industry, these chillers mostly operate at their performance limits. For another dehumidifier, there is often no capacity left. In such cases, a customer would have to expand his tap water network with great effort. This leads to considerable investment costs and to a further increase in cold water consumption. In addition, industrial water use is limited in a large number of regions and can not be expanded at will.
  • the invention is based on the invention of providing a dehumidifying device and a dehumidifying method, with which dry air can be generated efficiently and in a resource-saving manner.
  • the dehumidifying device is characterized in that the precooler has the deposited cold concrete denschasser and / or the cooled air from the main radiator can be supplied as a cooling medium.
  • the invention is based on the recognition that the precooler uses the separated cold condensed water or the cooled air from the main cooler as a cooling medium.
  • the task of the main cooler is to separate condensate from the intake ambient air by reducing the temperature accordingly. Due to the process, this condensation drying leads to a cooling of the air and formation of relatively cold condensation water.
  • the supply of these cooled media from the main cooler can be used to relieve the pre-cooler.
  • the cooling energy consumption of the pre-cooler can be reduced so much. In particular, it is possible to operate the precooler with a small amount of additional cold water or even completely without separate cold water from a pipe system.
  • the cooling energy used in the main and pre-cooler is practically used twice, so that overall energy-saving and thus a very economical operation is possible.
  • the precooler has a first heat exchanger, which is designed as an air-to-air plate heat exchanger.
  • first heat exchanger which is designed as an air-to-air plate heat exchanger.
  • other known configurations for heat exchangers can be used.
  • a preferred embodiment of the invention is that the main cooler has an evaporator with a second heat exchanger for separating the condensed water and a condenser with a third heat exchanger, and in that a cooling medium is circulated between the second heat exchanger and the third heat exchanger.
  • the main cooler can be designed as a known cooling unit, in which a cooling medium is first compressed by means of a compressor and heated. This heated and compressed cooling medium is then cooled in a condenser by dissipating heat to the environment. This cooled to ambient temperature, compressed cooling medium is then evaporated in an evaporator under pressure, with a significant temperature drop of up to the o 0 C can be achieved. This vaporized cold cooling medium is passed through the second heat exchanger, whereby the pre-cooled ambient air is strongly cooled and condensed out. In this way, the moisture content of the intake air in the air cooler can be significantly reduced.
  • a further improvement in energy efficiency results according to the invention in that the dehumidified air can be reheated by the first and / or third heat exchanger. As a result, a heat recovery is achieved. By reheating the dehumidified, cooled air, the relative humidity continues to drop. At the same time, the cooling effect for the first or the third heat exchanger improves, whereby the efficiency is further improved.
  • a structurally simple solution results according to the invention in that a condensate tray is arranged below the first heat exchanger and the time heat exchanger.
  • the separated condensate from the main cooler can flow down into the condensate tank, from where it can be directed by a pump to the first heat exchanger.
  • the condensed water can be conducted in a known manner through a line system of the first heat exchanger, which is provided with corresponding lamellae for absorbing energy from the air flow passed through.
  • a preferred embodiment according to the invention is that the condensate for spraying the first heat exchanger can be sprayed by means of nozzles. By spraying the condensed water can be achieved by the improved distribution and optionally an evaporation effect, an increased cooling effect.
  • An improvement in the maintenance of the dehumidifier is achieved according to the invention in that the precooler an air filter is connected upstream. In this way, contamination of the device is prevented.
  • a blower is provided.
  • This blower is arranged at the inlet or preferably at the air outlet of the dehumidifying device, so that the discharged dried air flow with defined flow parameters can be fed to the area of use, for example the cooled plastic tools.
  • the dehumidifier according to the invention can be used for a wide variety of applications in which dry air is needed.
  • a preferred application is according to the invention in that a device for plastics processing is provided with at least one mold, said device or system comprising a dehumidifier, as described above.
  • the dehumidifying device according to the invention can reliably prevent the formation of condensation and the associated problems in the plastic products, especially in cooled plastic molds.
  • the inventive method for dehumidifying air is characterized in that the separated cold condensed water and / or the cooled air from the main cooler is supplied as a cooling medium to the precooler.
  • a dehumidifying device 10 has an air filter 12 at the device inlet.
  • the flow of ambient air is generated by an outlet-side blower 18, wherein the flow path is outlined by black arrows.
  • the ambient air After passing through the air filter 12, the ambient air first passes through a precooler 14, which is equipped with a first heat exchanger. The thus pre-cooled air is then passed through a main cooler 20.
  • the main cooler 20 comprises an evaporator 22 with a second heat exchanger and a condenser 24 (condenser) with a third heat exchanger.
  • the evaporator 22 and the condenser 24 are connected via a closed line 29, via which a cooling medium can be circulated.
  • a compressor 26 is arranged in a known manner, which compresses the cooling medium and thereby heated. The thus heated cooling medium is cooled in the condenser 24 and then passed via a throttle valve 28 to the evaporator 22.
  • the evaporator 22 takes place due to the intended 5 012172
  • This temperature reduction can be delivered via the second heat exchanger in the evaporator 22 to the pre-cooled air to be dried.
  • the cooled air flowing out of the evaporator 22 is conducted through the condenser 24 to the third heat exchanger in the illustrated embodiment.
  • the dehumidified cold air can be reheated, at the same time the recirculated cooling medium of the main cooler 20 is cooled. This heat recovery increases the energy efficiency of the dehumidifying device 10 according to the invention considerably.
  • the incurred cold condensation water is used in the pre-cooler 14 as a cooling medium, so that the dehumidifier 10 according to the invention does not have to be connected to a cold water system in an operation. Also, this return of the cold condensation water and use for pre-cooling the incoming air increases energy efficiency to a considerable extent.
  • the thus dehumidified and reheated air is passed via the fan 18, which has a fan driven by an electric motor, to a drying area.
  • This drying area may in particular be a tool room with molds of an injection molding, blow molding or stretch blow molding plant in which cooled plastic molds are used.
  • the invention can achieve an energy saving of 20 to 50% with a maintenance-friendly construction.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Drying Of Gases (AREA)

Abstract

La présente invention concerne un appareil de déshumidification (10) et un procédé pour déshumidifier l'air. L'air est tout d'abord pré-refroidi dans un dispositif de pré-refroidissement (14), puis plus amplement refroidi dans un dispositif de refroidissement principal (20), de la condensation se déposant sous forme d'eau. On obtient un rendement énergétique particulièrement bon grâce au fait que l'eau de condensation froide déposée, et l'air refroidi, alimentent, depuis le dispositif de refroidissement principal (20), le dispositif de pré-refroidissement (14), sous la forme d'un agent de refroidissement.
PCT/EP2005/012172 2005-07-18 2005-11-14 Appareil de deshumidification et procede pour deshumidifier l'air WO2007009488A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05015566.2 2005-07-18
EP20050015566 EP1676623B8 (fr) 2004-12-28 2005-07-18 Dispositif et procède de déshumidification d'air

Publications (1)

Publication Number Publication Date
WO2007009488A1 true WO2007009488A1 (fr) 2007-01-25

Family

ID=35781376

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/012172 WO2007009488A1 (fr) 2005-07-18 2005-11-14 Appareil de deshumidification et procede pour deshumidifier l'air

Country Status (1)

Country Link
WO (1) WO2007009488A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2925954A1 (fr) * 2007-12-27 2009-07-03 Armines Ass Pour La Rech Et Le Systeme de refroidissement d'un melange psychrometrique par couplage d'une unite de condensation et d'une unite d'evaporation
WO2011067747A1 (fr) 2009-12-01 2011-06-09 Budhi Haryanto Climatisation multifonction économe en énergie et écologique en tant que sécheur et générateur d'eau potable de condensation et d'eau chaude
WO2012010791A1 (fr) * 2010-07-23 2012-01-26 A Raymond Et Cie Procédé de moulage et dispositif pour mouler au moins une pièce

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2644567A1 (de) * 1976-10-02 1978-04-06 Heinz Henke Luftentfeuchtungsanlage
US4771611A (en) * 1985-08-30 1988-09-20 Dricon Air Pty Limited Air conditioning means and method
FR2648055A1 (fr) * 1989-06-08 1990-12-14 Mouren Alexandre Amelioration du sechage des gaz par procede frigorifique a point de rosee variable
US5794453A (en) * 1996-07-22 1998-08-18 Flair Corporation Apparatus and method for removing condensable material from a gas

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2644567A1 (de) * 1976-10-02 1978-04-06 Heinz Henke Luftentfeuchtungsanlage
US4771611A (en) * 1985-08-30 1988-09-20 Dricon Air Pty Limited Air conditioning means and method
FR2648055A1 (fr) * 1989-06-08 1990-12-14 Mouren Alexandre Amelioration du sechage des gaz par procede frigorifique a point de rosee variable
US5794453A (en) * 1996-07-22 1998-08-18 Flair Corporation Apparatus and method for removing condensable material from a gas

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2925954A1 (fr) * 2007-12-27 2009-07-03 Armines Ass Pour La Rech Et Le Systeme de refroidissement d'un melange psychrometrique par couplage d'une unite de condensation et d'une unite d'evaporation
US9468881B2 (en) 2007-12-27 2016-10-18 Association Pour La Recherche Et Le Developpement Des Methodes Et Processus Industriels “Armines” Cooling system of a psychrometric mixture by coupling a condensation unit and an evaporation unit
WO2011067747A1 (fr) 2009-12-01 2011-06-09 Budhi Haryanto Climatisation multifonction économe en énergie et écologique en tant que sécheur et générateur d'eau potable de condensation et d'eau chaude
WO2012010791A1 (fr) * 2010-07-23 2012-01-26 A Raymond Et Cie Procédé de moulage et dispositif pour mouler au moins une pièce

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