EP1449953A1 - Trocknungseinrichtung für Wäsche und Verfahren zum Betrieb einer solchen - Google Patents
Trocknungseinrichtung für Wäsche und Verfahren zum Betrieb einer solchen Download PDFInfo
- Publication number
- EP1449953A1 EP1449953A1 EP04003390A EP04003390A EP1449953A1 EP 1449953 A1 EP1449953 A1 EP 1449953A1 EP 04003390 A EP04003390 A EP 04003390A EP 04003390 A EP04003390 A EP 04003390A EP 1449953 A1 EP1449953 A1 EP 1449953A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- laundry
- drying
- inner drum
- air
- 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
- 238000001035 drying Methods 0.000 title claims description 158
- 238000000034 method Methods 0.000 title claims description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims description 32
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 239000003570 air Substances 0.000 description 116
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 2
- 238000011088 calibration curve Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000008844 regulatory mechanism Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010981 drying operation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
- D06F31/005—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies consisting of one or more rotating drums through which the laundry passes in a continuous flow
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/26—Condition of the drying air, e.g. air humidity or temperature
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/02—Characteristics of laundry or load
- D06F2103/08—Humidity
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/32—Temperature
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/28—Air properties
- D06F2103/34—Humidity
-
- 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
- D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
- D06F2105/28—Electric heating
-
- 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
- D06F58/32—Control of operations performed in domestic laundry dryers
- D06F58/34—Control of operations performed in domestic laundry dryers characterised by the purpose or target of the control
- D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
- D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
Definitions
- the invention relates to a drying device for laundry with a stationary housing shell and a rotatably mounted therein and circumferentially for the passage of air perforated inner drum for receiving laundry to be dried and with a heater connected to the housing shell including air duct for the supply and removal of drying air.
- Such a drying device as a single-chamber machine with a stationary housing shell and one in a substantially horizontal Drum axis rotatingly driven internal drum executed.
- the Inner drum is usually made of a hollow cylinder or tubular Shell made of perforated stainless steel sheet, which at its inner axial end through a the inner drum back wall forming stainless steel sheet is closed. This can be designed as a discharge door.
- the front wall delimiting the other end has a central filling opening for the laundry item to be dried on, the only after the filling by a door hinged to the outer housing is closed.
- the batch of laundry becomes chamber-like inner drum held in rotation to the laundry item loosen up and the laundry items of the Wäschepostens possible evenly out of the stream of drying air.
- Multi-chamber drying devices used in which the heating process, the drying process and the final cooling process spatially take place separately and the laundry items to be dried after completion a process be conveyed like a conveyor belt, so that the individual Chambers or areas of the drying device on a substantially constant working temperature can be maintained.
- a drying device is known for example from EP 1 054 094 A1.
- the known drying device comprises an axially into a plurality of inner drum chambers, namely a heating chamber, a drying chamber and a Cooling chamber, divided inner drum.
- the inner drum is made of two juxtaposed Half shells formed, of which a first half shell for promotion the laundry item opposite the second half-shell by one chamber width is displaceable in the axial direction.
- the axial displacement of the first half shell takes place, preferably in a rest position, when these respect to the Internal drum rotation is in the bottom dead center, and thus the due absorb gravity pulled down laundry.
- the inner drum is rotated 180 °, so that the laundry around an inner drum chamber offset falls back into the stationary second half-shell.
- the last interior drum chamber that was previously in the laundry conveying direction will be in the process taken laundry items ejected from the inner drum, and a new laundry item to be dried in the open, in Laundry conveying direction first inner drum chamber introduced. After axial Retraction of the first half shell will initiate a new cycle of operations set.
- the known drying device is for better heat utilization with a equipped according to a counterflow principle working air duct, in which the inner drum chambers integrated against the laundry conveying direction are.
- the drying air flow thus first flows through the cooling chamber, where the cold drying air by the residual heat of the laundry costs recorded there is preheated.
- the drying air is then at a drying temperature heated, and flows through the drying chamber and after the heating chamber.
- To further improve the energy balance is at each inner drum chamber part of the drying air in a circulation flow repeatedly passed through the corresponding inner drum chamber.
- the residual heat of the effluent from the cooling chamber exhaust air over recovered a heat exchanger.
- the invention is based on the object, a drying device of the above mentioned type with respect to the applied for the drying process Time and energy to improve.
- the invention is still the task on, a particular for operating such a drying device specify appropriate method.
- the object is achieved according to the invention by the features of claim 1.
- the method becomes the object According to the invention solved by the features of claim 10.
- at least a sensor is provided, which continuously for determining the residual moisture of a batch of laundry relevant metrics and receives a to control the control unit provided for the drying process. Based on recorded measured variables is continuously the residual moisture of the Wäschepostens determined and compared with a setpoint, based on the comparison result the heating of the drying air flow and / or the duration of the Drying process is regulated.
- the invention is based on the recognition that for the drying of various Linen each time a different time and energy required is, especially as laundry items by their weight and their textile texture can differ significantly.
- the basic idea of the invention is the drying time and the energy applied as much as possible to the needs of each individual laundry item adapt.
- a control of the heating register in dependence from currently determined, the laundry items associated actual values intended.
- As a particularly advantageous control variable for determining needs draws them while the residual moisture of a drying laundry to zoom.
- the temperature and / or the humidity in the drying air stream used are expediently either on the inside of the housing shell or arranged in an air outlet duct of the air duct.
- suitable Sensors are expediently either on the inside of the housing shell or arranged in an air outlet duct of the air duct.
- a particularly precise determination of the residual moisture of the laundry is thereby allows the humidity and / or the temperature of the laundry item discharged drying air with the humidity or the temperature the drying air supplied to the laundry item is compared, in particular by determining the temperature difference. That way you can target the moisture absorption of the drying air flow and its temperature change be determined.
- the Control unit expediently controlling the arranged in the air duct Heating register and the movement drive of the inner drum.
- the demand-adjusted control of the drying capacity is already advantageous to use a simple single-chamber machine.
- the advantages of this scheme But they are particularly evident in a drying device, in which to enable a streamlined, in particular flow-band, Run the drying process, the inner drum in at least two axially consecutive inner drum chambers for receiving one each Laundry post is divided.
- three inner drum chambers provided, wherein seen in a direction in the laundry conveying direction first inner drum chamber of the laundry items heated by hot drying air is, in an adjoining in Wäschekörderides inner drum chamber the actual drying process at high drying temperature takes place and in the third inner drum chamber the laundry by cold Drying air is cooled.
- each inner drum chamber To achieve a particularly large laundry throughput is expediently in each inner drum chamber depending on a laundry item heated at the same time, dried or cooled, and after completion the joint cycle of operations is followed by a promotion phase, in which the laundry items flow-band-like in the laundry conveying direction next following inner drum chamber are transported.
- the air duct expediently designed such that to each inner drum chamber a corresponding air supply duct and a corresponding Heilab USAkanal are provided, so that in each inner drum chamber, a separate chamber air flow is excitable.
- an inner drum chamber in a subsequent in the laundry conveying direction inner drum chamber to accomplish is one formed of two half-shells Inner drum provided, wherein the formation of the inner drum chambers each Half shell at least one interior in the axial direction in at least two Compartments dividing partition has.
- the half-shells are about each other formed mirror-inverted, so that corresponding partitions of the two Half shells in a juxtaposition in alignment with each other, and so on opposite compartments of the two half-shells together one completed each Form inner drum chamber.
- To promote a Wäschepostens is a half-shell relative to the other half-shell in the axial direction displaceable. The promotion of the Wäschepostens takes place here on constructive especially simple manner according to the above-described, from EP 1 054 094 A1 per se known methods.
- the inner drum chambers are advantageously integrated in the air duct according to a counterflow principle. Flows through it the cold drying air stream is first the cooling chamber, i. in the laundry conveying direction last internal drum chamber, and is thereby by the residual heat preheated the laundry costs recorded there. The preheated Drying air flow is then by means of a heating register on a Drying temperature heated and successively through the drying chamber and the heating chamber passed. To further improve the Energy balance is associated with each internal drum chamber Lucasab technologicalkanal with connected to the corresponding air supply duct, so that a part of the drying air flow as a circulation stream several times through the inner drum chamber can be directed.
- the Heating the chamber air flow flowing through the drying chamber as soon as the residual moisture content of the laundry lot taken up in the drying chamber falls below the setpoint.
- the drying chamber is only moderated by warm drying air flows through, causing overdrying of the Wäschepostens is effectively avoided.
- the heating power of Bankregisters so regulated during the entire cycle of operation that the Drying process with respect to its duration adapted to the cooling process becomes.
- the heating of the drying chamber flowing through Chamber air flow regulated so that the residual moisture in the Drying chamber recorded Wäschepostens the set value about to Time reached at which the temperature of the recorded in the cooling chamber Laundry costs the limit temperature reached.
- the process cycle preferably terminated as soon as the residual moisture of the recorded in the drying chamber Laundry costs have fallen below the setpoint and the temperature recorded in the Abkühlhunt laundry costs the limit temperature has fallen below.
- the core of the drying device is an inner drum 1. It is through two each about half the circumference of the drum extending, independent half-shells 2,3 formed.
- the half-shells 2, 3 each have the outline shape a roughly in its longitudinal direction pipe section with relative large pipe diameter, wherein the end faces of the two pipe section halves in each case by at right angles to the drum rotation axis 9 extending End walls 4.5 and 6.7 closed and wherein the tube jacket or the two the half-shells 2,3 associated pipe half-shells with schematically illustrated Holes 8 provided to flow through the inner drum 1 with drying air are.
- the drum rotation axis running perpendicular to the plane of the drawing of FIG 9 occurs within the inner drum 1 or within their halves 2,3 not physically in appearance and exists only as an imaginary line.
- the Inner drum 1 is at its outer periphery between support rollers 10 within a rotatably mounted as a stationary housing shell serving outer drum 11.
- the half shells 2, 3 are not shown by one, only one of the two Half shells - here the half shell 2 - acting displacement drive axially with respect the drum rotation axis 9 relative to each other.
- the axial displacement the half-shell 2 is shown in Figs. 2, 3, 5 and 6 by a double-headed arrow symbolically indicated.
- the interior of each half shell 2,3 is between the end walls 4.5 and 6.7 by means of radial Partitions 21,22 and 23,24 in three compartments 12-14 (half-shell 2) and 15-17 (Half shell 3) divided by the same compartment size.
- the compartments 12-14 and 15-17 lie in the direction of the drum rotation axis 9 next to each other.
- FIGS. 2 and 6 illustrated Comparison of the half shells 2 and 3 are the actual Completed drying operations during which the inner drum 1 is rotated, around the recorded in the inner drum 1 wash evenly the drying air flow suspend.
- the loading of the drying device with a laundry item 25 takes place according to the laundry conveying direction 26 at the inner drum chamber 18 adjacent Feed side 27.
- the dry laundry is ejected according to the adjacent to the inner drum chamber 20 ejection side 28th
- the half-shell is the second relative to the half-shell 3 of FIG. 3 axially in the laundry conveying direction 26 to moved a compartment width.
- the for loading in their bottom dead center position located, axially fixed half-shell 3 stands with its the feed side 27th facing compartment 15 on the end wall 6 of the top dead center located, shifted half-shell 2 addition (Fig. 5). That's it Compartment 15 of the half-shell 3 freely accessible from above, so that one in the embodiment designed as a conveyor belt 29 feeder unhindered in the space surrounded by the stationary outer drum 11 above enter the compartment 15 of the half-shell 3 and deliver a laundry item 25 can. This falls from above in the direction of arrow 30 in the compartment 15 into it.
- This Linen 25 is in the form of a dewatered press cake, as he from a dewatering press is placed on the conveyor belt 29.
- the first inner drum chamber 18, which is also referred to below as Aufgenesishunt 18, takes place under Rotation of the inner drum 1 in the drying air stream L shaking and the Heating of the enclosed laundry costs 25.
- the middle, with another Laundry Lot 25 filled inner drum chamber 19 or drying chamber 19 serves the actual drying process at a drying temperature to about 150 ° C.
- Inner drum chamber 20 completes the cooling of dried Liquor 25 by cold drying air at or below a limit temperature, which no longer represents a danger for manual handling of the laundry.
- Fig. 4 indicates an intermediate position between the rotational positions according to FIG. 3 (starting position) and Fig. 5 (end position) of the ejection process.
- a catching device 32 in the now released space below the compartment 14 inside.
- the collecting device is effective in the manner of a receiving tray, in which the dried laundry item 25 from the swung compartment 14 in Arrow direction 33 falls down (Fig. 4).
- the collecting device 32 is suitably connected to a conveyor, which is the dry laundry to a next processing station (not shown).
- the drying device By the drying device, it is possible, the drying process in several split spatially separated steps that gradually in the laundry conveying direction 26 are completed side by side. Thereby it is not necessary to heat the inner drum 1 or portions thereof alternately and cool again.
- the embodiment are in the same inner drum side by side arranged three inner drum chambers 18-20. Basically, it is already be advantageous over a single-chamber machine, with only two side by side arranged to operate internal drum chambers 18,19. But it is also quite conceivable, instead of the embodiment in the normal position total existing three side by side together the inner drum 1 forming Inner drum chambers 18-20 more than three inner drum chambers side by side provide and thereby the drying process from the feed side 27 to the discharge side 28 in more than three steps.
- An air guide 34 within the dryer makes a special Energy saving possible. It is particularly in the in Figs. 2 and 6 and 7 and 8 shown juxtaposition of the inner drum 1 effective, ie outside the transport phase, and will be described with reference to FIGS. 7 and 8 in more detail.
- the air guide 34 i. the entire pipe system for the drying air, is formed such that each inner drum chamber 18, 19, 20 is separate from a chamber air flow L1, L2, L3 is flowed through.
- the chamber air flows L1 to L3 are partial sections of a drying air flow designed as a counter air flow L. This means that the drying air flow L all internal drum chambers 18th flows through 20 in the direction of the laundry conveying direction 26 reverse order.
- Drying air flow L is removed as fresh air 35 of the ambient air and So flows through as the chamber air flow L1 first, the cooling chamber 20, as Chamber air stream L2 then the drying chamber 19 and finally as Chamber air stream L3 the heating chamber 18, before the drying air by means a heat exchanger 36 withdrawn their inherent heat and then they supplied as exhaust air 37 again the ambient air or outside atmosphere becomes.
- the chamber air flow L1-L3 each comes from a zoom out to the outer drum 11 Air supply channel 38a-c (corresponding parts are below according to their affiliation to the subfigures 8a to 8c by lowercase letters specified) through the perforated shell of the inner drum 1 in the associated inner drum chamber 18-20 and flows through the inner drum chamber 18-20 essentially radial.
- the chamber air flow L1-L3 is through an approximately opposite to the air supply channel 38a-c in the outer drum 11th aspirated Lucasab technologicalkanal 39a-c sucked out of the inner drum chamber 18-20 and passes through one connected in the respective Heilabrioskanal 39a-c Filter 40a-c and the drying air flow L accelerating fan 41 a-c.
- each Heilab technologicalkanal 39a-c branches to one on the pressure side of the fan 41a-c arranged line division 42a-c one end to the corresponding Air supply channel 38a-c connected circulation channel 43a-c from, via which a part of the discharged chamber air flow L1-L3 as a circulation stream Z1-Z3 can be returned to the associated inner drum chamber 18-20.
- a respective pair of flaps or actuators 44a-c in each circulation channel 43a-c and downstream of the line division 42a-c in Lucasab technologicalkanal 39a-c is controlled, which portion of the chamber air flow L1-L3 as a circulation flow Z1-Z3 is returned to the same inner drum chamber 18-20.
- This recycled content is on average about 60% of the respective chamber air flow L1-L3, but can be adjusted separately for each inner drum chamber 18-20 be varied.
- the remainder of an average of 40% of the Chamber air flow L1-L3 is in the air flow direction next Air supply channel 38a-b is fed or, starting from in the air flow direction last air discharge channel 39a as exhaust air 37 delivered to the environment.
- the drying air flow L thus decreases, starting from the ambient or Fresh air 35 the following course:
- the fresh air 35 is mixed with the circulating flow Z1 flowing back through the circulation passage 43c through the Air supply channel 38 c of the cooling chamber 20 is supplied, where by heat exchange the comparatively cool chamber air flow L1 with the in the cooling chamber 20 recorded laundry items 25 on the one hand, the laundry cooled, and on the other hand, the drying air to a temperature between about 30 ° C and 80 ° C. is preheated.
- the remaining part of the chamber air flow L1 is in a heat exchanger 45 further preheated to about 80 ° C and with the through the circulation channel 43b backflowing circulation stream Z2 mixed to form the chamber air stream L2.
- the Temperature and humidity of the through the air supply channel 38b of the Drying chamber 19 supplied chamber air flow L2 especially the backflow Circulation flow Z2 is generally hotter and wetter than that the cooling chamber 20 fed drying air.
- the chamber air flow L2 is in addition by a arranged in the air supply channel 38b heating register 46b a drying temperature of up to 150 ° C heated.
- the properties of the Chamber air flow L2 in terms of temperature and humidity, and thus the Drying intensity, so can by regulating the admixing ratio of circulation air and regulation of the heating power of the heating register 46b targeted be set.
- the aspirated from the drying chamber 19 through the air discharge passage 39b and in turn filtered chamber airflow L2 will turn into parts through the Circulation channel 43 b returned to the drying chamber 19.
- the rest Part of the chamber air flow L2 becomes with the back flowing through the circulation channel 43a Circulation flow Z3 mixed to form the chamber air flow L3 and fed via the air supply channel 38a of the heating chamber 18.
- the chamber airflow drawn out of the heating chamber 18 through the air discharge passage 39a L3, after filtering, becomes parts through the circulation passage 43a in FIG the heating chamber 18 returned.
- the remainder of the chamber airflow L3 is passed through an additional filter 47, of one only in the embodiment accelerated according to FIG. 8 fan 48 and the heat exchanger 36 supplied.
- the extracted by the heat exchanger 36 heat is for preheating the drying air flow L to the heat exchanger 45 recycled.
- the embodiments of the drying device shown in FIGS. 7 and 8 differ in that, as shown in FIG. 8, the one arranged upstream Inner drum chamber 19,20 associated Dunab conveykanal 39b-c directly into the downstream following air supply duct 39a-b, while according to Fig. 7 of an upstream arranged inner drum chamber 19,20 assigned Heilabwholesomekanal 39 b-c first in the downstream next Vietnameseab Industrieskanal 38a-b opens, and only about the therein arranged fan 41a-b and the branching circulation passage 43a-b merges into the air supply passage 38a-b.
- the heating registers 46a-b are preferably supplied with heat by external steam 49, as in industrial laundries usually for heating purposes especially for the washing water is present.
- the in the heating registers 46a-b converted heat contains the majority of the energy that the To be supplied drying device.
- the drive and the control of Drying device required electrical energy is low compared. A Therefore, a particularly expedient method for saving energy is to to adjust the heating of the heating coils as needed.
- the drying device with a sensor 50 disposed in the air discharge passage 39b, which is continuous the humidity and, optionally, the temperature of the drying chamber Measures 19 outflowing drying air.
- An arranged in the air supply passage 38b another sensor 51 measures the humidity and, optionally, the temperature the drying air flowing into the drying chamber 19.
- An im Air outlet 39c arranged third sensor 52 measures the temperature of the cooling chamber 20 outflowing drying air. Further details not shown Sensors are optional in the same way the air supply channel 38 a and Lucasab Switzerlandkanal 39 a, and thus the heating chamber 18, associated.
- the sensors 50-52 carry the recorded measured values via a schematic illustrated data line 53 a preferred as program-controlled Calculator executed control unit 54 too.
- the control unit 54 controls again via a schematically and simplified illustrated control line 55, the heater 46a-b, the valves 44a-c and an only indicated inner drum drive 56 for the rotation and axial displacement of the inner drum 1 at.
- the heating registers 46a-b are preferably continuous or in several steps between a Maximum heating power and zero power adjustable.
- the valves 44a-c preferably continuously or in several steps up and regurgitated.
- the laundry must be completely dry at the end of the drying process have reached or, in other words, the residual moisture of the in the drying chamber 19 recorded Wäschepostens 25 must have a have reached or fallen below the predetermined setpoint.
- the Temperature of the recorded in the cooling chamber 20 Wäschepostens 25 the For the further handling safe limit temperature reached or fallen below to have.
- Wäschepostens 25 calculates the control unit 54 by comparing the of Moisture absorption is indicated by the humidity values displayed to the sensors 50 and 51 and, if present, by comparison of sensors 50 and 51 displayed temperature values, the temperature change of the chamber air flow L2 when flowing through the drying chamber 19. From the moisture absorption the chamber air flow L2 calculates the control unit 54 with the aid of a stored calibration curve or model function the residual moisture in the Drying chamber 19 recorded laundry cost 25. For a refined Residual moisture determination, the control unit 54 optionally pulls the temperature or Temperature change of the chamber air flow L2 zoom.
- control unit 54 closes from the sensor 52 reported Temperature value to the temperature of the recorded in the cooling chamber 20 Laundry cost 25 back.
- control unit breaks down 54 by appropriate control of the inner drum drive 56 and the Air duct 34 from the process cycle and causes the promotion of the laundry items 25 ( Figures 3 to 6).
- the duration of successive operation cycles is thus different and to the needs of each treated laundry items 25 matched.
- the heating register 46b operated in normal operation with a comparatively strong heating power.
- the heating power is regulated for example in such a way that in the sensor 51 a constant drying temperature is measured.
- the control unit switches 54, the heater 46b from, whereby the moisture discharge from the Drying chamber 19 and the energy consumption during the rest Drying time is lowered.
- the control unit 54 changes optionally the position of the valves 44b to further reduce the moisture discharge.
- the time to reach the full-drying state according to the first basic condition of the cooling time according to the second basic condition by appropriate adjustment of Heating power of the heating register 46b aligned happens appropriately in that the control unit continuously or at intervals the temporal Course of the residual moisture of the recorded in the drying chamber 19 Wäschepostens 25 receives, and with the aid of a stored calibration curve or model function the expected time of completion of the first Basic condition calculated.
- the control unit 54 estimates from the temporal Course of the temperature of the recorded in the cooling chamber 20 Wäschepostens 25 the time for the fulfillment of the second basic condition.
- the heating power of the heating register 46b is adjusted down accordingly. Otherwise, the heating power is increased.
- the last described control mechanism optimizes the drying process so that it is adapted to the needs of the customer With regard to the heat output and the duration of the drying process.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
Description
- Fig. 1
- in einem schematischen Querschnitt eine Trocknungseinrichtung mit einer drehbar gelagerten, zwei Halbschalen umfassenden Innentrommel,
- Fig. 2
- in einem schematischen Längsschnitt die Trocknungseinrichtung gemäß Fig. 1 in Gegenüberstellung der beiden Halbschalen,
- Fig. 3
- in einer Darstellung gemäß Fig. 2 die Trocknungseinrichtung mit zueinander versetzten Halbschalen,
- Fig. 4
- in einem schematischen Querschnitt die Trocknungseinrichtung gemäß Fig. 3 in um ca. 135° gedrehter Stellung der Innentrommel,
- Fig. 5
- in einer Darstellung gemäß Fig. 3 die Trocknungseinrichtung in um 180° gedrehter Stellung der Innentrommel,
- Fig. 6
- die Trocknungseinrichtung gemäß Fig. 5 wiederum in Gegenüberstellung der Halbschalen,
- Fig. 7
- in einem Längschnitt eine schematische Darstellung der Luftführung der Trocknungseinrichtung und
- Fig. 8
- eine Variante der Luftführung gemäß Fig. 7 in einer einem Fließdiagramm ähnlichen Darstellung mit in Querschnitten VIIa-VIIc gemäß Fig. 7 dargestellten Innentrommelkammern.
- 1
- Innentrommel
- 2,3
- Halbschale
- 4-7
- Stirnwand
- 8
- Loch
- 9
- Trommeldrehachse
- 10
- Stützrollen
- 11
- Außentrommel
- 12-17
- Abteil
- 18
- Innentrommelkammer = Aufheizkammer
- 19
- Innentrommelkammer = Trocknungskammer
- 20
- Innentrommelkammer = Abkühlkammer
- 21-24
- Trennwand
- 25
- Wäscheposten
- 26
- Wäscheförderrichtung
- 27
- Beschickungsseite
- 28
- Auswurfseite
- 29
- Förderband
- 30
- Pfeilrichtung
- 31
- Drehrichtung
- 32
- Auffangvorrichtung
- 33
- Pfeilrichtung
- 34
- Luftführung
- 35
- Frischluft
- 36
- Wärmetauscher
- 37
- Abluft
- 38a-c
- Luftzuführkanal
- 39a-c
- Luftabführkanal
- 40a-c
- Filter
- 41 a-c
- Ventilator
- 42a-c
- Leitungsteilung
- 43a-c
- Zirkulationskanal
- 44a-c
- Stellglieder
- 45
- Wärmetauscher
- 46a-b
- Heizregister
- 47
- Filter
- 48
- Ventilator
- 49
- Fremddampf
- 50-52
- Sensor
- 53
- Datenleitung
- 54
- Regeleinheit
- 55
- Steuerleitung
- 56
- Innentrommelantrieb
- L
- Trockenluftstrom
- L1-L3
- Kammerluftstrom
- Z1-Z3
- Zirkulationsluftstrom
Claims (17)
- Trocknungseinrichtung für Wäsche mit einem stationären Gehäusemantel (11) und einer darin drehbar gelagerten und umfangsseitig zum Luftdurchtritt gelochten Innentrommel (1) zur Aufnahme von zu trocknender Wäsche sowie mit einer an den Gehäusemantel (11) angeschlossenen, ein Heizregister (46a-b) beinhaltenden Luftführung (34) für die Zu- und Abführung von Trocknungsluft,
dadurch gekennzeichnet, dass eine dem Heizregister (46a-b) zugeordnete Regeleinheit (54) dateneingangsseitig mit einem Sensor (50,51,52) zur Bestimmung der Restfeuchte eines Wäschepostens (25) verbunden ist. - Trocknungseinrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass der Sensor (50) als im Inneren des Gehäusemantels (11) und/oder in einem Luftabführkanal (39a-c) angeordneter Luftfeuchtigkeitssensor ausgebildet ist. - Trocknungseinrichtung nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass der Sensor (50,52) als im Inneren des Gehäusemantels (11) und/oder in einem Luftabführkanal (39a-c) angeordneter Temperatursensor ausgebildet ist. - Trocknungseinrichtung nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass die Regeleinheit (54) datenausgangsseitig mit einem Innentrommelantrieb (56) verbunden ist. - Trocknungseinrichtung nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass die Innentrommel (1) mindestens zwei axial aufeinanderfolgende Innentrommelkammern (18-20) zur Aufnahme jeweils eines Wäschepostens (25) aufweist, und dass die Luftführung (34) für jede Innentrommelkammer (18-20) einen korrespondierenden Luftzuführkanal (38a-c) und einen korrespondierenden Luftabführkanal (39a-c) umfasst, so dass jede Innentrommelkammer (18-20) von einem separaten Kammerluftstrom (L1-L3) durchströmbar ist. - Trocknungseinrichtung nach Anspruch 5,
dadurch gekennzeichnet, dass die Innentrommel (1) aus zwei sich jeweils etwa über den halben Trommelumfang erstreckenden Halbschalen (2,3) gebildet ist, wobei der Innenraum jeder Halbschale (2,3) durch mindestens eine bezüglich der Halbschale (2,3) ortsfeste Trennwand (21-24) in mindestens zwei axial bezüglich der Innentrommel (1) aufeinanderfolgende Abteile (12-17) derart aufgeteilt ist, dass in fluchtender Gegenüberstellung der beiden Halbschalen (2,3) die jeweils gegenüberstehenden Abteile (12,15;13,16;14,17) zusammen eine abgeschlossene Innentrommelkammer (18-20) bilden. - Trocknungseinrichtung nach Anspruch 6,
dadurch gekennzeichnet, dass zur Förderung eines Wäschepostens (25) aus einer Innentrommelkammer (18,19) in die in einer Wäscheförderrichtung (26) nächstfolgende Innentrommelkammer (19,20) eine Halbschale (2) gegenüber der anderen Halbschale (3) axial verschiebbar ist. - Trocknungseinrichtung nach einem der Ansprüche 5 bis 7,
dadurch gekennzeichnet, dass durch die Luftführung (34) die Innentrommelkammern (18-20) luftströmungsmäßig entgegen der Wäscheförderrichtung (26) hintereinander geschaltet sind, so dass die Kammerluftströme (L1-L3) Teile eines Gegenluftstroms (L) sind, der die in Wäscheförderrichtung (26) letzte Innentrommelkammer (20) zuerst, und die in Wäscheförderrichtung (26) erste Innentrommelkammer (18) zuletzt durchströmt. - Trocknungseinrichtung nach einem der Ansprüche 5 bis 8,
dadurch gekennzeichnet, dass der jeder Innentrommelkammer (18-20) zugeordnete Luftabführkanal (39a-c) mit dem korrespondierenden Luftzuführkanal (38a-c) durch einen Zirkulationskanal (43a-c) zur Rückleitung von Trocknungsluft verbunden ist. - Verfahren zum Betrieb einer Trocknungseinrichtung für Wäsche, insbesondere nach einem der Ansprüche 1 bis 9, bei dem ein zu trocknender Wäscheposten (25) zur Feuchtigkeitsabfuhr einem Trocknungsluftstrom (L) ausgesetzt wird, wobei fortlaufend die Restfeuchte des Wäschepostens (25) ermittelt und mit einem Sollwert verglichen wird, und wobei anhand des Vergleichsresultats die Beheizung des Trocknungsluftstroms (L) und/oder die Dauer des Trocknungsprozesses geregelt wird.
- Verfahren nach Anspruch 10,
dadurch gekennzeichnet, dass die Restfeuchte des zu trocknenden Wäschepostens (25) anhand der Luftfeuchtigkeit und/oder der Temperatur der vom Wäscheposten (25) abgeführten Trocknungsluft ermittelt wird. - Verfahren nach Anspruch 11,
dadurch gekennzeichnet, dass die Restfeuchte des Wäschepostens (25) durch Vergleich der Luftfeuchtigkeit und/oder Temperatur der vom Wäscheposten (25) abgeführten Trocknungsluft mit der Luftfeuchtigkeit bzw. Temperatur der dem Wäsche-posten zugeführten Trocknungsluft ermittelt wird. - Verfahren nach einem der Ansprüche 10 bis 12,
gekennzeichnet durch
bezüglich eines Wäschepostens (25) zeitlich aufeinander folgend einen Aufheizvorgang, in dem der Wäscheposten (25) durch Beströmung mit geheizter Trocknungsluft erwärmt wird, einen Trocknungsvorgang, in dem der Wäscheposten (25) durch Beströmung mit geheizter Trocknungsluft getrocknet wird, und einen Abkühlvorgang, in dem der Wäscheposten (25) durch Beströmung mit kalter Trocknungsluft unter eine Grenztemperatur abgekühlt wird. - Verfahren nach Anspruch 13,
dadurch gekennzeichnet, dass der Aufheizvorgang, der Trocknungsvorgang und der Abkühlvorgang zeitlich parallel und räumlich getrennt voneinander in einer Aufheizkammer (18) bzw. einer Trocknungskammer (19) bzw. einer Abkühlkammer (20) an mehreren Wäscheposten (25) durchgeführt werden, und dass jeweils an einen für alle Vorgänge gemeinsamen Vorgangszyklus eine Beförderungsphase anschließt, in welcher die Wäscheposten (25) in die in Wäscheförderrichtung (26) nächstfolgende Kammer (19,20) befördert werden. - Verfahren nach Anspruch 14,
dadurch gekennzeichnet, dass die Beheizung des die Trocknungskammer (19) durchströmenden Kammerluftstroms (L2) abgestellt wird, sobald die Restfeuchte des in der Trocknungskammer (19) befindlichen Wäschepostens (25) den Sollwert unterschreitet. - Verfahren nach Anspruch 14,
dadurch gekennzeichnet, dass die Beheizung des die Trocknungskammer (19) durchströmenden Kammerluftstroms (L2) derart geregelt wird, so dass die Restfeuchte des in der Trocknungskammer (19) aufgenommenen Wäschepostens (25) den Sollwert etwa zu dem Zeitpunkt erreicht, zu welchem die Temperatur des in der Abkühlkammer (20) aufgenommenen Wäschepostens (25) die Grenztemperatur erreicht. - Verfahren nach einem der Ansprüche 14 bis 16,
dadurch gekennzeichnet, dass der Vorgangszyklus beendet wird, sobald die Restfeuchte des in der Trocknungskammer (19) aufgenommenen Wäschepostens (25) den Sollwert erreicht oder unterschritten hat und die Temperatur des in der Abkühlkammer (20) aufgenommenen Wäschepostens (25) die Grenztemperatur erreicht oder unterschritten hat.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE10307123A DE10307123A1 (de) | 2003-02-19 | 2003-02-19 | Trocknungseinrichtung für Wäsche und Verfahren zum Betrieb einer solchen |
DE10307123 | 2003-02-19 |
Publications (2)
Publication Number | Publication Date |
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EP1449953A1 true EP1449953A1 (de) | 2004-08-25 |
EP1449953B1 EP1449953B1 (de) | 2016-09-28 |
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EP04003390.4A Expired - Lifetime EP1449953B1 (de) | 2003-02-19 | 2004-02-16 | Trocknungseinrichtung für Wäsche und Verfahren zum Betrieb einer solchen |
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DE (1) | DE10307123A1 (de) |
Cited By (4)
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US8042284B2 (en) * | 2006-10-09 | 2011-10-25 | Lg Electronics Inc. | Heating system, drying machine having the heating system, and method of controlling the heating system |
WO2014173507A1 (de) * | 2013-04-24 | 2014-10-30 | Herbert Kannegiesser Gmbh | Verfahren zum trocknen von wäschestücken und trockner |
WO2016184462A1 (de) * | 2015-05-21 | 2016-11-24 | Lavatec Laundry Technology Gmbh | Modularer lufttrockner |
CN118099991A (zh) * | 2024-04-22 | 2024-05-28 | 山西施瑞德电力科技有限公司 | 一种具有对流散热结构的低压开关柜结构 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6736805B2 (ja) * | 2015-12-11 | 2020-08-05 | 青島海爾洗衣机有限公司QingDao Haier Washing Machine Co.,Ltd. | 洗濯乾燥機 |
DE102017002174A1 (de) | 2017-03-09 | 2018-09-13 | Lapauw (Thailand) Ltd. | Wäschetrockner zur Trocknung von Wäsche |
US11319662B2 (en) | 2020-02-11 | 2022-05-03 | Chuck DEWALD | Drying apparatus and drum |
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GB901954A (en) * | 1960-05-19 | 1962-07-25 | Gen Motors Corp | Improvements in or relating to clothes dryers |
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DE19913938A1 (de) * | 1999-03-26 | 2000-09-28 | Mewa Textil Service Ag & Co Man Ohg | Trocknungseinrichtung für Wäsche |
-
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- 2003-02-19 DE DE10307123A patent/DE10307123A1/de not_active Withdrawn
-
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- 2004-02-16 EP EP04003390.4A patent/EP1449953B1/de not_active Expired - Lifetime
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GB901954A (en) * | 1960-05-19 | 1962-07-25 | Gen Motors Corp | Improvements in or relating to clothes dryers |
US4546554A (en) * | 1982-11-30 | 1985-10-15 | Cissell Manufacturing Company | Clothes dryer having variable position motor and moisture sensor |
DE19913938A1 (de) * | 1999-03-26 | 2000-09-28 | Mewa Textil Service Ag & Co Man Ohg | Trocknungseinrichtung für Wäsche |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8042284B2 (en) * | 2006-10-09 | 2011-10-25 | Lg Electronics Inc. | Heating system, drying machine having the heating system, and method of controlling the heating system |
WO2014173507A1 (de) * | 2013-04-24 | 2014-10-30 | Herbert Kannegiesser Gmbh | Verfahren zum trocknen von wäschestücken und trockner |
WO2014173506A1 (de) * | 2013-04-24 | 2014-10-30 | Herbert Kannegiesser Gmbh | Verfahren zum trocknen von wäschestücken und trockner |
WO2016184462A1 (de) * | 2015-05-21 | 2016-11-24 | Lavatec Laundry Technology Gmbh | Modularer lufttrockner |
KR20180011796A (ko) * | 2015-05-21 | 2018-02-02 | 라바텍 런드리 테크널러지 게엠베하 | 모듈식 공기 건조기 |
EP3453796A1 (de) * | 2015-05-21 | 2019-03-13 | Lavatec Laundry Technology GmbH | Modularer lufttrockner |
AU2016263357B2 (en) * | 2015-05-21 | 2019-05-02 | Lavatec Laundry Technology Gmbh | Modular air drier |
US10612183B2 (en) | 2015-05-21 | 2020-04-07 | Lavatec Laundry Technology Gmbh | Modular air drier |
CN118099991A (zh) * | 2024-04-22 | 2024-05-28 | 山西施瑞德电力科技有限公司 | 一种具有对流散热结构的低压开关柜结构 |
Also Published As
Publication number | Publication date |
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EP1449953B1 (de) | 2016-09-28 |
DE10307123A1 (de) | 2004-09-09 |
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