EP2334864A1 - Dryer having a lint filter and a cleaning device - Google Patents
Dryer having a lint filter and a cleaning deviceInfo
- Publication number
- EP2334864A1 EP2334864A1 EP09782501A EP09782501A EP2334864A1 EP 2334864 A1 EP2334864 A1 EP 2334864A1 EP 09782501 A EP09782501 A EP 09782501A EP 09782501 A EP09782501 A EP 09782501A EP 2334864 A1 EP2334864 A1 EP 2334864A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dryer
- process air
- lint
- heat sink
- drying chamber
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 66
- 238000001035 drying Methods 0.000 claims abstract description 51
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 24
- 239000004744 fabric Substances 0.000 claims description 16
- 238000011010 flushing procedure Methods 0.000 claims description 14
- 238000010926 purge Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 239000005871 repellent Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000844 anti-bacterial effect Effects 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract 3
- 239000003507 refrigerant Substances 0.000 description 14
- 238000011161 development Methods 0.000 description 6
- 230000018109 developmental process Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000006735 deficit Effects 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000008237 rinsing water Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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
- D06F58/20—General details of domestic laundry dryers
- D06F58/22—Lint collecting arrangements
Definitions
- the invention relates to a dryer comprising a drying chamber for receiving a moist material and a substantially closed process air duct for circulating process air through the drying chamber, which process air duct
- Heat source for heating the process air before it enters the drying chamber and a heat sink for cooling the process air after it exits the drying chamber
- Drying chamber and arranged between the drying chamber and the heat sink first lint filter, which is associated with a first cleaning device.
- a dryer for drying laundry by means of an air flow is known.
- a screen for filtering lint from an air flow in the process air guide is arranged in the region of a bearing plate, which screen forms a first lint filter.
- the lint collected in the process air duct on the screen is stripped off the screen fabric of the lint filter and stored in a container arranged adjacent to the doctor blade and to the screen.
- the squeegee and the container thus form together with other components a first cleaning device.
- the container is relatively small due to the space available in the area of the squeegee.
- the dryer also has a heater as a heat source and an air-to-air heat exchanger as a heat sink in the process air duct.
- This object is achieved by a generic dryer, which has the features of the independent claim.
- the dryer according to the invention comprises a drying chamber for receiving a moist material and a process air duct for supplying process air into the drying chamber and for discharging process air from the drying chamber, wherein the process air duct is in particular a substantially closed process air duct for circulating process air through the drying chamber, which process air duct a heat source for heating the process air before it enters the drying chamber and a heat sink for cooling the process air after it leaves the drying chamber and a first lint filter arranged between the drying chamber and the heat sink, to which a first cleaning device is assigned, characterized in that the first cleaning device comprises a collector for a liquid, a first flushing line connected to the collector, a first control element located in this first flushing line, and one to the first purge line connected first distributor for distributing conveyed by the first purge line liquid on the first lint filter and for receiving trapped lint from the first lint filter and a first derivative for discharging the liquid with the received lint from the first lin
- the lint is rinsed off the first lint filter by rinsing it with a suitable liquid, which is preferably collected and collected in the dryer, and the lint is thus taken up by the liquid and removed therewith.
- a suitable liquid which is preferably collected and collected in the dryer, and the lint is thus taken up by the liquid and removed therewith.
- the liquid causes the purged lint taken from this, or, collected in an additional filter and separated from the liquid, a relative form compact moist lumps, which can be disposed of quite easily and without the formation of further dust.
- the first discharge has a second lint filter for collecting the lint taken up.
- the first lint filter captures the vast majority of all lint, which in one
- the second lint filter can trap these lint, thus providing them separated from the liquid as a relatively compact, easily removable body for eventual disposal.
- the first lint filter has a filter fabric fastened on a carrier, wherein the filter fabric has at least one property from the group comprising the properties hydrophobicized, dirt-repellent and antibacterial.
- a filter fabric which is hydrophobed is particularly preferred. All of these properties can be imparted to the filter fabric by a corresponding coating, wherein the coating can be formed in a conventional manner by impregnation or plasma coating.
- the collector of the heat sink for collecting condensate, which precipitates in the heat sink from the process air assigned.
- the collector does not necessarily have to be in close proximity to the heat sink;
- the collector can be placed in particular from the dryer removable and placed on an easily accessible for an operator, spaced from the heat sink body of the dryer. Then the operator can remove the collector from the dryer after completion of the drying process and dispose of the condensate collected therein; In this context, it is also possible to dispose of the lint collected in the second lint filter (appropriately placed).
- a pumping line together with a condensate pump is provided in the corresponding dryer, which connects the heat sink with the collector.
- the pumping line may in particular start from a collecting tray placed on the heat sink, in which condensate is present collects, which has formed in the heat sink from the cooled process air stream and deposited on the heat sink and dripping from this.
- the drip tray can be an integral part of that part of the process air duct, in which the heat sink is placed.
- heat source and heat sink in the dryer according to the invention is not important in the first place;
- heat source and heat sink of any known type and design are conceivable and useful in connection with the invention.
- the heat source may be a heater operated electrically or by combustion of a suitable fuel such as oil and gas.
- the heat sink may be a heat exchanger operated with a suitable coolant, for example an air-to-air heat exchanger.
- the dryer according to the invention in which the heat source and the heat sink of a heat pump are associated, which heat pump is arranged to pump heat from the heat sink to the heat source.
- the corresponding dryer has a second cleaning device which comprises a second flushing line connected to the collector, a second control element located in this second flushing line and a second distributor connected to the second flushing line for distributing liquid conveyed through the second flushing line to the second flushing line Has heat sink.
- the heat pump is a thermoelectric heat pump or a heat pump of the compressor type
- the heat sink must be permanently connected to other components of the heat pump and can not be removed from the dryer for cleaning like a conventional air-to-air heat exchanger , Then it is particularly favorable to assign the heat sink a second cleaning device by which the heat sink of lint that could not be caught by the first lint filter and have adhered to it to clean. If this second cleaning device works with liquid, then it can be combined in a particularly advantageous manner with the first cleaning device, as described here.
- the dryer according to the invention is set up as a tumble dryer for drying a moist material, which is laundry. It is further preferred that the drying chamber is a rotatable drum.
- the dryer according to the invention is designed as a domestic appliance.
- FIG. 1 is a sketch of a household appliance, designed as a tumble dryer.
- FIG. 2 shows a first lint filter together with the first distributor for rinsing liquid;
- Fig. 3 is a partial view of a clothes dryer in section
- Fig. 4 is a partial view of another dryer in section.
- the dryer 1, here a tumble dryer 1 comprises a drying chamber 2 designed as a rotatable drum, which receives moist material 3, here linen 3, for drying.
- a closed process air duct 4 is provided, in which, driven by a blower 5, a process air flow is circulated which absorbs moisture from the laundry 3 and removes it.
- a heat source 6 the process air is heated before it enters the drying chamber 2. After the thus heated process air has flowed around due to the rotation of the drying chamber 2 in this surrounding laundry 3 while absorbing moisture, it leaves the drying chamber 2 and reaches a heat sink 7.
- a first lint filter 12 is arranged in the process air guide 4.
- This first lint filter 12 is necessary to lint, these are fine, dust-like fiber particles and the like, which entraises the flowing process air of the laundry 3, so that they do not reach the heat sink 7 and contaminate it. This is necessary above all because lint that precipitate on appropriately exposed surfaces of the heat sink 7, the thermal conductivity of the structures within the heat sink 7 can significantly deteriorate, so that the operation of the dryer 1 can be affected or even endangered.
- the presence of the first lint filter 12 in the process air guide 4 is not free of possible impairments, because even the first lint filter 12 is a significant flow obstacle in the process air 4, if it clogs in the course of a drying process with lint.
- a first cleaning device 13 1, 15, 16, 17, associated with which the first lint filter 12 using the Can be freed of lint stored in the collector 11 condensate.
- a first purge line 13 is connected to the collector 11, which passes through a first control member 14 to a arranged on the first lint filter 12 first manifold 15, through which condensate can be distributed from the collector via the first lint filter 12, so that this condensate on the first lint filter 12 deposits lint and dissipates.
- Such loaded with lint condensate passes through a first discharge line 16 to a second lint filter 17, which catches the lint taken from the condensate, whereupon the condensate in turn the drip tray 8 flows to be transported from this by means of the condensate pump 10 back to the collector 11.
- the lint is a compact, moist lump, which can be relatively easily removed and disposed of the second lint filter 17.
- the condensate in the collector 11 remains reasonably free of lint, so that it can be used in a known manner instead of distilled water, for example for ironing laundry.
- the collector 11 can be filled exclusively or additionally with fresh water taken from a domestic water supply. In this way it can be ensured that the collector 1 1 always contains the amount of liquid required for cleaning the lint filter 12.
- the heat source 6 and the heat sink 7 are integrated in the present embodiment illustrated in a heat pump 6, 7, 20, 21, 22, in which heat, which is withdrawn from the process air in the heat sink 7, pumped to the heat source 6 and fed back there the process air becomes.
- This substance may be present propane, carbon dioxide or a fluorinated hydrocarbon compound such as the known R134a, R152a, R407C and R410a - the latter two substances are mixtures of several fluorinated hydrocarbon compounds.
- the refrigerant passes in the refrigerant circuit 20 in liquid form to the heat sink 7, where it evaporates while absorbing heat from the process air also flowing through.
- a compressor 21 in the refrigerant circuit 20 compresses the evaporated refrigerant and delivers it to the heat source 6. There, the refrigerant liquefies by giving off heat to the process air flowing through.
- the refrigerant now flows in the refrigerant circuit 20 of a throttle 22, represented by a valve, a capillary or an orifice, to where it is expanded to a reduced pressure. In this form, it returns to the heat sink 7 to re-evaporate there.
- the refrigerant circuit 20 must be completely self-contained in order to ensure complete enclosure of the refrigerant over the expected service life of the dryer 1.
- the first lint filter 12 is incapable of completely receiving the fluff entrained by the process air; It is always to be expected that a fraction of the lint, though extremely finely divided, passes through the lint filter 12 without being caught by it. These finely divided lint are then more or less completely settled in the heat sink 7, wherein the condensate occurring there, they to the corresponding exposed surfaces of the Heat sink 7 can adhere. These fluff can, if appropriate over a larger number of drying processes in the dryer 1 away, significantly affect the function of the heat sink 7. In the present case, it is aggravating that because of the required complete sealing of the refrigerant circuit 20, removal of the heat sink 7 from the dryer 1 is not possible for the purpose of cleaning.
- the heat sink 7 is associated with a second cleaning device 23, 24, 25, with which also in the collector 11 collected condensate can be used to rinse the process air exposed surfaces of the heat sink 7 and remove the resulting lint.
- a second purge line 23 together with inserted second control element 24 is assigned to the collector, which connects the collector 1 1 with a second distributor 25 placed on the heat sink 7. Via this second distributor 2 condensate from the collector 1 1 passes to the heat sink 7 and can rinse the fluff deposited there. The condensate laden with such fluff drips off into the collecting tray 8 and is in turn fed to the collector 11 from there by means of the condensate pump 10.
- the Kotrollorgane 14 and 24 are presently shown in each case as a simple valve 14 and 24.
- a pump in addition to each such valve 14 and 24 may be provided a pump.
- a single pump could be assigned to both valves 14 and 24, respectively.
- FIG. 2 shows a first lint filter 12 which is constructed with a carrier 18 which carries a filter cloth 19.
- the filter fabric 19 is flowed through by process air, wherein lint contained therein are deposited on the filter fabric 19.
- the filter fabric 19 consists of a surface-treated material which is water-repellent or dirt-repellent equipped.
- FIG. 3 shows a part of a dryer 1 as a sectional view. Shown is a section through a front-side end plate of the dryer 1, to which, see reference numeral 2, the drying chamber 2 is connected.
- first manifold 15 From the only slightly visible first manifold 15 condensate flows as flushing water 28 on the inclined lint filter 12, where it absorbs deposited lint, and passes through a first discharge line 16 into a chamber which is formed by a removable flap 30 and a partition 29th In a lower region, the partition wall 29 is permeable so that the rinse water can pass through and to the drip tray 8, so that the lint remains in the lower region of the chamber.
- the chamber is removable, so that the lint can be disposed of.
- the design of the dryer 1 shown in Figure 4 largely corresponds to the embodiment of Figure 3, although behind the flap 30, a filter bag 31 is provided.
- This filter bag 31 is made of permeable paper or textile and absorbs the lint removed from the lint filter 12 by means of the rinsing water 28 lint. If the filter bag 31 has sufficiently filled with such lint, it can be removed by opening the flap 30. This allows the lint to be disposed of without having to be touched directly.
- the invention can also be applied in a dryer which has an open process air duct 4, as is customary in so-called drier dryers, ie the process air is taken from the room air surrounding the dryer, the drying chamber 2 is supplied and the process air discharged from the drying chamber 2 is returned to the room air. Otherwise, this dryer also has the facilities covered by the dryer 1 shown above also.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Drying Of Solid Materials (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL09782501T PL2334864T3 (en) | 2008-09-11 | 2009-09-02 | Dryer having a lint filter and a cleaning device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008041998A DE102008041998A1 (en) | 2008-09-11 | 2008-09-11 | Dryer with a lint filter and a cleaning device |
PCT/EP2009/061329 WO2010028992A1 (en) | 2008-09-11 | 2009-09-02 | Dryer having a lint filter and a cleaning device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2334864A1 true EP2334864A1 (en) | 2011-06-22 |
EP2334864B1 EP2334864B1 (en) | 2017-06-07 |
Family
ID=41174324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09782501.2A Active EP2334864B1 (en) | 2008-09-11 | 2009-09-02 | Dryer having a lint filter and a cleaning device |
Country Status (7)
Country | Link |
---|---|
US (1) | US8438750B2 (en) |
EP (1) | EP2334864B1 (en) |
CN (1) | CN102149866B (en) |
DE (1) | DE102008041998A1 (en) |
EA (1) | EA017943B1 (en) |
PL (1) | PL2334864T3 (en) |
WO (1) | WO2010028992A1 (en) |
Cited By (1)
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RU2789288C1 (en) * | 2019-12-17 | 2023-02-01 | ЭлДжи ЭЛЕКТРОНИКС ИНК. | Laundry processing device and a method for controlling a laundry processing device |
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- 2009-09-02 EP EP09782501.2A patent/EP2334864B1/en active Active
- 2009-09-02 WO PCT/EP2009/061329 patent/WO2010028992A1/en active Application Filing
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Also Published As
Publication number | Publication date |
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CN102149866A (en) | 2011-08-10 |
WO2010028992A1 (en) | 2010-03-18 |
CN102149866B (en) | 2013-01-16 |
EA017943B1 (en) | 2013-04-30 |
US8438750B2 (en) | 2013-05-14 |
DE102008041998A1 (en) | 2010-03-18 |
EA201170403A1 (en) | 2011-10-31 |
US20110167662A1 (en) | 2011-07-14 |
PL2334864T3 (en) | 2017-11-30 |
EP2334864B1 (en) | 2017-06-07 |
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