WO1991018142A1 - Verfahren und vorrichtung zum entfeuchten von wäsche o.dgl. - Google Patents
Verfahren und vorrichtung zum entfeuchten von wäsche o.dgl. Download PDFInfo
- Publication number
- WO1991018142A1 WO1991018142A1 PCT/DE1991/000408 DE9100408W WO9118142A1 WO 1991018142 A1 WO1991018142 A1 WO 1991018142A1 DE 9100408 W DE9100408 W DE 9100408W WO 9118142 A1 WO9118142 A1 WO 9118142A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fluid
- pump
- liquid
- fluid mixture
- mixture
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/30—Drying processes
Definitions
- the invention relates to a method and a device for dehumidifying laundry or the like.
- Another known method for dehumidifying consists in pumping out existing permanent gases and condensable vapors at the same time with a rotary vane pump or a liquid jet pump. It is essential, however, that the temperature of the liquid ring of the rotary vane pump or the liquid of the liquid jet pump is significantly lower than the temperature of the gas mixture to be sucked in, since otherwise the liquid of the ring in the pump Boiling pressure falls below and evaporates. This makes the compression practically ineffective. If the temperature of the liquid ring or the jet is clearly below the temperature of the fluid to be condensed, good results are achieved.
- a gas ballast device in a rotary vane pump can expand the working range in the direction of higher pressure ratios, but at the expense of good process efficiency and at the cost of subsequent difficult condensation of the compressed gas mixture due to the additional permanent gases contained therein.
- the invention is therefore based on the object of providing a method and a device by means of which laundry can be dehumidified in an energy-saving manner using a few and small components.
- This object is achieved according to the invention by means of a method in that the pressure of the fluid or fluid mixture to be extracted is first increased by means of a turbo engine to such an extent that the fluid or fluid mixture is then compressed by means of a pump with an eccentric liquid ring or with a liquid jet, condensed and the amount of liquid obtained is removed.
- the container interior of the tumble dryer is exposed to a negative pressure and the boiling point of one or more fluids or fluid mixtures located in the container is thereby lowered. If there is damp laundry in the container, the boiling point of the water is lowered until the water evaporates.
- the laundry is now by means of the negative pressure, e.g. is slightly above room temperature, dehumidified. Another advantage is that the laundry is treated gently, since it is dehumidified without significant thermal and mechanical treatment. It remains loosely shaken in the container. It is also sterilized due to the negative pressure, since most living things cannot withstand such a high negative pressure.
- the energy expenditure compared to the known methods mentioned at the outset is significantly lower, i.e. on the order of about 40%.
- the vaporizable fluid is an air-water vapor mixture and there is air and wet laundry in the drum.
- the water in the form of water vapor and the air as a fluid mixture consisting of steam and air are removed from the container.
- the air is extracted with the water ring pump and the water vapor is condensed to avoid high intake volume flows.
- the turbo engine is connected upstream. This increases the pressure of the steam-air mixture, whereby the pressure ratio can be low. However, the volume flow is very large.
- the air that prevents the condensation of the water is extracted after a short period of operation.
- the fluid or fluid mixture is preferably fed to a condenser after the pre-compression by the turbo compressor.
- the fluid or fluid mixture is advantageously cooled in a heat exchanger and the condensable fluid components are at least partially liquefied and then the fluid or fluid mixture is further compressed and the condensable fluid components are further liquefied.
- Another advantage is that the fluid or fluid mixture and the condensed fluid portion are passed into a collecting container in order to be able to continue using the condensate.
- a collecting container for example, water condensate from a tumble dryer can be used for ironing and / or the condensate can be used to operate the liquid ring or liquid jet pump in order to save the otherwise necessary water connection.
- the collecting container is preferably cooled in particular with a cool stream of liquid.
- the heat of condensation and / or the amount of heat withdrawn from one or more permanent gases is advantageously fed to the non-evaporating fluid or fluid mixture.
- the fluid or fluid mixture is preferably further compressed in a diffuser.
- the diffuser following the turbo engine is made in one piece with the heat exchanger, there are further advantages. On the one hand, a small construction volume is achieved, on the other hand, heat is given off to the heat exchanger during compression in the diffuser.
- the non-evaporating fluid or fluid mixture is advantageously heated by the waste heat of a drive motor.
- Another advantage is that the non-evaporating fluid or fluid mixture is passed over a moving cool drum and the fluid is then fed through a heat exchanger to a feed pump.
- the cool drum and thus the cool partially dehumidified laundry is heated by the warm, non-evaporable fluid.
- This heat supplied is e.g. the heat of condensation that occurs when the previously evaporated fluid condenses.
- the exhaust pipe of the pump or compressor unit can advantageously be arranged and laid in the interior of the device.
- the circuit of the non-vaporizable fluids can be switched very favorably if these fluids, which are initially very warm, are first passed onto the cool drum and cool down significantly in the process.
- Part of the cool stream can, if necessary, cool the condensate in the condensate container.
- the main stream of the cool liquid is fed to the heat exchanger in order to partially or completely liquefy the condensable constituents of the fluid mixture heated by the compression. By warming the viscosity of the liquid is reduced, which has a favorable effect on the flow losses in the subsequent lines. This saves an additional coolant connection.
- liquid ring pump, a feed pump and a transmission, the turbo engine, a drum and, if appropriate, further units are advantageously driven by a single drive motor.
- the above object is achieved by means of a device with a gas-tight, vaporizable and non-vaporizable fluid-containing container, according to the invention achieved by a turbo engine for pre-compressing the vaporizable fluid or fluid mixture and a water ring pump for suctioning off the vaporizable fluid or fluid mixture.
- a turbocompressor is understood here to mean a continuously conveying compressor of the axial or radial type, mixed forms, e.g. are semi-axially conceivable.
- the turbocompressor can be designed as a single-stage impeller with a subsequent diffuser.
- the evaporable fluid is precompressed by means of the turbocompressor, which inevitably increases the pressure and the temperature of the fluid or fluid mixture, and this is then sucked off in a liquid ring or liquid jet pump without the risk of evaporation and cavitation in the pump.
- the turbocompressor can be operated at a high speed, which has the advantage of a large intake volume flow in conjunction with a small construction volume.
- a preferred embodiment provides that the turbo closer a capacitor is connected.
- the gas mixture can be passed through a condenser after precompression.
- the downstream heat exchanger extracts heat from the fluid mixture, so that some or all of the condensable components in the fluid mixture condense. This results in a large reduction in the volume flow.
- a relatively small liquid ring or liquid jet pump can subsequently be connected very advantageously.
- the temperature of the fluid mixture is so far above the temperature of the liquid ring or the liquid jet of the pump that evaporation and / or cavitation of the liquid ring or the liquid jet does not occur.
- this circuit Since this circuit is operated at very low pressure, delivery to the feed pump is only possible with a sufficient geodetic height. This height is measured in connection with the flow cross-sections in the device in such a way that the flow speed in the heat exchanger is high enough for sufficient heat dissipation, a sufficient inflow speed is achieved in the feed pump and cavitation in the feed pump is avoided. Then the liquid flow is directed onto the cool drum wall.
- a further development provides that a liquid separator is provided after the condenser. Such a liquid separator can also be provided after the liquid ring or liquid jet pump.
- a gear pump is preferably provided in connection with the liquid separator. The condensate is easily removed with this.
- the water ring pump contains a portion of the liquid obtained at the condenser.
- a single drive is provided for the turbo engine, the water ring pump, a gear pump and possibly a circulating pump.
- the drive is advantageously arranged within the container of the device, it being possible for the drive to be arranged in the non-evaporating, in particular electrically non-conductive, fluid.
- the waste heat or waste heat generated when the negative pressure is generated is fed to a pump or compressor unit in the container and thus in the laundry to be dehumidified.
- the flow of the non-evaporating liquid is used to cool the drive motor after passing through the heat exchanger.
- the power loss of the drive motor is used very effectively to heat the material to be dried.
- the drive motor can also be selected to be smaller, since the power of the drive motor is limited by inadmissible heating, and the heating is lower due to the cooling. Securing the tightness is generally problematic in vacuum systems, since high leakages, with air passing through open cross sections at the speed of sound, result in a high intake volume flow of the vacuum pumps. It is therefore a particular advantage of this device that at most one seal is required for a rotating drive shaft with a relatively small diameter which is introduced into the space to be evacuated.
- a special embodiment provides that the drive shaft is connected to the shaft of the drive motor of the liquid pump or another driven unit, since this eliminates a further drive motor and in particular eliminates a drive within the space to be evacuated.
- the turbo engine is arranged within the container.
- the container preferably contains additional bodies which press the laundry onto the wall of the container and have a heat capacity which warms up and cooled laundry located in its vicinity.
- the additional bodies can also emit heat themselves.
- the container is advantageously provided with a microwave transmitter.
- a microwave transmitter As a result, the evaporation of the fluid can be accelerated or supported, in particular in the final phase of the drying process, in which there is less good heat conduction in the material to be dried.
- FIG. 1 is a functional diagram of a drying device
- FIG. 2 shows a cross section through a drying device according to FIG. 3;
- FIG. 3 shows a longitudinal section through a drying device according to FIG. 2.
- FIG. 1 shows a functional diagram of a drying device, generally designated 1, with which a dryer room 2 can be evacuated, in which a fluid mixture 3 of one or more vaporizable fluids, e.g. Water, and from one or more non-evaporable fluids.
- the fluids can consist of gases and / or liquids 4 and 5.
- the non-evaporable liquids 5 are sprayed in the dryer room 2 by means of a circulation pump 6.
- This circulation pump 6 is connected to the liquid sump of the drying chamber 2 containing the non-evaporable liquid.
- a turbocompressor 7, to which a condenser 9 is connected, is connected to the dryer chamber 2 containing the fluid mixture 3 via an intake line 8.
- This condenser 9 is located in the liquid sump of the drying chamber 2 containing the non-evaporable liquid.
- the condenser 9 is followed by a liquid separator 10, the liquid outlet of which is connected via a line to a gear pump as a positive displacement pump 14.
- the gas outlet of the liquid separator 10 is connected to a liquid ring pump 11, which is also followed by a further liquid separator 13.
- a liquid Jet pump 12 may be provided.
- both the displacement pump 14 and the liquid separator 13 open into a collecting container 15, in which the vaporizable fluid of the dryer space 2 is collected.
- the fluid mixture 3 passes through the condenser 9, as a result of which the compressed fluid mixture 3 is cooled and the non-evaporating liquid is heated.
- the fluid mixture 3 in the liquid separator is separated from the liquid constituents and the gaseous constituent is sucked off by the liquid ring pump 11.
- a further suction and condensation can alternatively or additionally be carried out by means of the liquid jet pump 12.
- the fluid mixture compressed in this way, together with the condensed liquid, or the gas, which is generally the permanent gas, and the condensed liquid can be separated in the further liquid separator 13, the liquid being fed to the collecting container 15 and the gas being released outdoors is directed.
- all pumps and compressors 6, 7, 11, 12, 14 can be operated via a single drive or partially together are driven.
- a particularly advantageous embodiment provides a fast-running drive 16 for the turbocompressor 7 and a slow-running common drive 17 for the pumps and compressors 6, 11, 12 and 14.
- the elements such as liquid separators 10 and 13, displacement pump 14 and collecting container 15 are dispensed with.
- FIG. 2 shows a cross section and FIG. 3 shows a longitudinal section through the drying device 1, in which the dryer room 2 is to be evacuated and thereby dehumidified.
- a laundry drum 18 is arranged in the dryer room 2 and contains wet laundry, ie laundry and the fluid mixture 3, which consists of the permanent gas air and the vaporizable liquid 4, namely water. Furthermore, the non-vaporizable and odorless liquid 5 is located within the drying chamber 2.
- the drum 18, which is rotatably mounted on rollers 19, is accessed via an opening 20.
- the rollers 19 are advantageous, e.g. driven by a drive 17 from a gear.
- This drive 17 has a start-up control 21, which has the effect that in the start-up phase no high dynamic torque increases are caused in the driven parts of the device and that in the initial phase, in which there is still a high pressure in the device, low mechanical loads are brought about .
- the non-evaporating liquid 5, above the liquid level of which the drum 18 is arranged, is fed to the spray nozzles 23 by means of the circulating pump 6 via a line 22, via which they are evenly distributed on the drum 18. is distributed widely. As a result, the drum 18 and thus the laundry in the drum 18 is heated. Penetration of the liquid 5 into the interior of the drum 18 is avoided by means of suitable obstacles 24 or labyrinths. By means of a scraper 25, the non-evaporable cooled liquid 5 flowing around the drum 18 is lifted off and fed to the liquid separator 13. A further cooling of the liquid separator 13 takes place in that it is connected in one piece to the pressure vessel 26 and the cold cover 27.
- This condenser 9 lies in the trough containing the non-evaporating liquid 5, so that by means of the heated, compressed fluid mixture 3, the capacitor 9 and thereby the non-evaporating liquid 5 is heated.
- the liquid ring pump 11 connects to the condenser. From this liquid ring pump 11, the fluid is fed to the liquid separator 13, where the gas, usually permanent gas, and the condensed liquid are separated and where the non-condensable gases are removed.
- the circulation pump 6, a transmission gear 29 for driving the turbocompressor 7 and a reduction gear 30 for driving the drum 18 are driven by a particularly thin drive shaft 31, which is connected directly to the drive shaft 32 of the liquid ring pump 11.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE9116851U DE9116851U1 (de) | 1990-05-18 | 1991-05-17 | Vorrichtung zum Entfeuchten eines Trocknerraumes |
US07/949,553 US5430956A (en) | 1990-05-18 | 1991-05-17 | Process and device to dry laundry and the like |
DE59102369T DE59102369D1 (de) | 1990-05-18 | 1991-05-17 | Verfahren und vorrichtung zum entfeuchten von wäsche o.dgl. |
EP91909335A EP0528905B1 (de) | 1990-05-18 | 1991-05-17 | Verfahren und vorrichtung zum entfeuchten von wäsche o.dgl. |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4015963 | 1990-05-18 | ||
DEP4015963.9 | 1990-05-18 | ||
DEP4029538.9 | 1990-09-19 | ||
DE4029538 | 1990-09-19 | ||
DE4104989A DE4104989A1 (de) | 1990-05-18 | 1991-02-19 | Verfahren und vorrichtung zum evakuieren und entfeuchten eines raumes |
DEP4104989.6 | 1991-02-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991018142A1 true WO1991018142A1 (de) | 1991-11-28 |
Family
ID=27201209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1991/000408 WO1991018142A1 (de) | 1990-05-18 | 1991-05-17 | Verfahren und vorrichtung zum entfeuchten von wäsche o.dgl. |
Country Status (6)
Country | Link |
---|---|
US (1) | US5430956A (de) |
EP (1) | EP0528905B1 (de) |
AT (1) | ATE109223T1 (de) |
CA (1) | CA2082803A1 (de) |
DE (2) | DE9116851U1 (de) |
WO (1) | WO1991018142A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2745896B1 (fr) * | 1996-03-07 | 1998-04-24 | Armines | Procede et installation de sechage d'une masse de matiere fibreuse humide, notamment d'une masse de linge |
US5806204A (en) * | 1997-06-13 | 1998-09-15 | Mmats, Inc. | Material dryer using vacuum drying and vapor condensation |
DE102005013052A1 (de) * | 2005-03-18 | 2006-09-21 | BSH Bosch und Siemens Hausgeräte GmbH | Wäschetrockenmaschine |
KR101366274B1 (ko) * | 2007-08-03 | 2014-02-20 | 엘지전자 주식회사 | 의류처리장치 및 팬어셈블리 |
US8056256B2 (en) * | 2008-09-17 | 2011-11-15 | Slack Associates, Inc. | Method for reconditioning FCR APG-68 tactical radar units |
US8701307B2 (en) | 2008-09-17 | 2014-04-22 | Howard C. Slack | Method for cleaning and reconditioning FCR APG-68 tactical radar units |
EP2312049B1 (de) * | 2009-10-15 | 2014-04-09 | Electrolux Home Products Corporation N.V. | Wäschetrockner mit Wärmepumpensystem |
US11192800B2 (en) | 2018-03-22 | 2021-12-07 | Whirlpool Corporation | Vapor compression distillation assembly |
US10816266B2 (en) | 2018-08-30 | 2020-10-27 | Whirlpool Corporation | Low pressure laundry treating appliance |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0043361A1 (de) * | 1980-07-01 | 1982-01-06 | Jean-Marie Mertens | Vakuumtrockner |
DE3641665A1 (de) * | 1986-12-05 | 1988-06-30 | Behnke Klaus | Energiesparendes vakuumtrockenverfahren sowie eine vorrichtung zum trocknen von textilgut |
DE3644077A1 (de) * | 1986-12-23 | 1988-07-07 | Lange Wilhelm Dipl Ing Masch | Verfahren und vorrichtung zum entfeuchten nasser waesche |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1309357A (en) * | 1919-07-08 | Kaufman george falk | ||
US2627669A (en) * | 1951-11-06 | 1953-02-10 | Gen Motors Corp | Combined drier and room dehumidifier |
US3762065A (en) * | 1971-04-12 | 1973-10-02 | Kamas Kvarnmaskiner Ab | Apparatus for drying materials |
DE2430314C3 (de) * | 1974-06-24 | 1982-11-25 | Siemens AG, 1000 Berlin und 8000 München | Flüssigkeitsring-Vakuumpumpe mit vorgeschaltetem Verdichter |
DE2914181C2 (de) * | 1979-04-07 | 1982-06-16 | Kernforschungsanlage Jülich GmbH, 5170 Jülich | Verfahren und Vorrichtung zum Trocknen temperaturempfindlicher Güter der Pharma- und Nahrungsmittelindustrie |
-
1991
- 1991-05-17 DE DE9116851U patent/DE9116851U1/de not_active Expired - Lifetime
- 1991-05-17 AT AT91909335T patent/ATE109223T1/de not_active IP Right Cessation
- 1991-05-17 CA CA002082803A patent/CA2082803A1/en not_active Abandoned
- 1991-05-17 DE DE59102369T patent/DE59102369D1/de not_active Expired - Fee Related
- 1991-05-17 WO PCT/DE1991/000408 patent/WO1991018142A1/de active IP Right Grant
- 1991-05-17 US US07/949,553 patent/US5430956A/en not_active Expired - Fee Related
- 1991-05-17 EP EP91909335A patent/EP0528905B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0043361A1 (de) * | 1980-07-01 | 1982-01-06 | Jean-Marie Mertens | Vakuumtrockner |
DE3641665A1 (de) * | 1986-12-05 | 1988-06-30 | Behnke Klaus | Energiesparendes vakuumtrockenverfahren sowie eine vorrichtung zum trocknen von textilgut |
DE3644077A1 (de) * | 1986-12-23 | 1988-07-07 | Lange Wilhelm Dipl Ing Masch | Verfahren und vorrichtung zum entfeuchten nasser waesche |
Also Published As
Publication number | Publication date |
---|---|
DE9116851U1 (de) | 1994-04-07 |
US5430956A (en) | 1995-07-11 |
EP0528905B1 (de) | 1994-07-27 |
CA2082803A1 (en) | 1991-11-19 |
ATE109223T1 (de) | 1994-08-15 |
DE59102369D1 (de) | 1994-09-01 |
EP0528905A1 (de) | 1993-03-03 |
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