DE102009046921A1 - Dryer with a lint filter and a cleaning device - Google Patents

Abstract

The invention relates to a dryer 1 comprising a drying chamber (2) for holding a moist material (3) and an essentially closed process air duct (4) for circulating process air through the drying chamber (2), which process air duct (4) is a heat source (6) for heating the process air before it enters the drying chamber (2) and a heat sink (7) for cooling the process air after it exits the drying chamber (2), as well as a first fluff filter arranged between the drying chamber (2) and the heat sink (7) (12) for collecting lint from the process air, the first lint filter (12) being removable.

Description

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 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 Exit from the drying chamber, and arranged between the drying chamber and the heat sink first lint filter.

From the scriptures EP 1 788 140 A1 . EP 1 788 141 A2 and EP 1 788 141 A2 For example, a dryer for drying laundry by means of an air flow is known. In the dryer, 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. By means of a doctor blade, 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. However, the container is relatively small due to the space available in the area of the squeegee. It can be used to collect lint from about seven to ten drying processes. Since the lint is stored in the dry state, they occupy a relatively large volume. On the one hand, the accessibility to the collecting container is restricted in these dryers, and on the other hand, the collecting volume is limited by its arrangement in a space-limited zone of the dryer, resulting in a relatively frequent maintenance interval for disposal of the lint from the container. It is another disadvantage of the dryer, that even after a cleaning of the screen by the squeegee some lint remain on the sieve and stubbornly settle there and, in particular by the action of microorganisms that migrate from the environment of the dryer can decompose (so-called. "bio-fouling"). As a result, the sieve can clog up despite the doctor blade through the lint and also produces a musty-foul smell in the process air. Since the screen is intended for cleaning by the squeegee, eliminating the possibility that an end customer can rid the sieve of the stubborn residues.

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.

It is an object of the present invention to provide a generic dryer in which the removal of lint from the lint filter is further improved and in particular a suppression or prevention of significant decomposition of lint in the lint filter is possible.

This object is achieved by a generic dryer, which has the features of the independent claim. Preferred developments emerge in particular from the dependent patent claims and preferred combinations of further developments, in particular from corresponding combinations of dependent claims.

The 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 a heat source for heating the process air before entering the drying chamber and a heat sink for cooling the process air after it exits the drying chamber Drying chamber, as well as arranged between the drying chamber and the heat sink first lint filter, wherein the first lint filter is automatically cleaned in the dryer, is characterized in that the first lint filter is accessible by a flap, in particular maintenance cover.

In this way, even stubborn adhering to the first lint filter lint, etc. can be removed easily in a simple manner. For example, it is a further development that, in the case of a non-removable lint filter, it can be manually cleaned (for example by means of a brush) in the dryer by the opening which can be closed by the flap. In turn, the bio-fouling and the resulting clogging of the lint filter as well as the odor of decomposition can be eliminated.

The automatic cleaning in the dryer, in which the cleaning is thus carried out by the dryer and not by the end user, is initially not limited in its kind and may include an automatic cleaning by means of a doctor blade and / or a rinsing device.

It is an embodiment that the first lint filter can be removed through the flap of the dryer. This is a simple removability and even easier cleaning, z. B. manually and / or by a cleaning bath, even for an end user.

It is a further development that the flap is arranged in a base region of the dryer, in particular between a door and a floor, in particular just above the floor attaching.

It is still an embodiment that the first lint filter is a second lint filter fluidly connected downstream. In particular, the dryer may include a first drain for draining the liquid with the captured lint from the first lint filter, the first drain leading to a second lint filter for capturing the captured lint. The first lint filter captures the vast majority of all lint that occurs during a drying process in the dryer, and these fluff go into the rinse. 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. However, the few lint remaining on the first lint filter contribute to bio-fouling.

It is a further embodiment that the second lint filter can be removed through the flap. In other words, the first lint filter and the second lint filter can be taken out through the same flap, which facilitates removal.

It is yet another embodiment that the first lint filter and the second lint filter are respectively or separately removable. As a result, a removal and cleaning only one of the filters can be facilitated.

It is an alternative embodiment that the first lint filter and the second lint filter are collectively removable through the flap. As a result, a common removal and cleaning of both filters can be facilitated.

The dryer may moreover have a first purge line, a first control element located in this first purge line and a first distributor connected to the first purge line for distributing liquid conveyed through the first purge line to the first lint filter.

Thus, the lint is rinsed off the first lint filter by being rinsed off with a suitable liquid, which is preferably condensate accumulated in the dryer and collected, and the lint is thus taken up by the liquid and removed therewith. This eliminates the previously unavoidable dry and dust-causing scrape the lint filter by the squeegee, and it eliminates the hitherto usual disposal of the dry lint. In contrast, the liquid causes the rinsed lint taken from this, or collected in an additional filter and separated from the liquid, form a relatively compact wet lump that can be disposed of quite easily and without forming more dust.

Alternatively or additionally, the first lint filter can be cleaned by a squeegee.

It is still an embodiment that the dryer has a collector for a liquid, wherein the first flushing line is connected to the collector.

It is a development that the first derivative serves to drain the liquid to the collector.

It is also an embodiment that the second lint filter is arranged and arranged in addition to collecting liquid from the heat sink. The second lint filter can thus not only retain the lint washed off by the first lint filter, but also lint taken along by the heat sink, in particular rinsed off.

It is a particular embodiment that the second lint filter is arranged at least partially below the heat sink and has on its upper surface at least one passage at least for the liquid collected by the heat sink (and possibly additionally for the rinsing liquid running down from the first lint filter). Thus, the dripping of the heat sink liquid can be collected with little construction effort. Preferably, the second lint filter is located below the entire heat sink. The passage can z. B. be a large-scale perforation or perforation.

It is still a particular embodiment that the second lint filter has a level control device. As a result, a time for removal and subsequent emptying of the second lint filter can be displayed in a user-friendly manner.

The second lint filter may in particular be at least partially designed as a filter bag, for. B. by means of a lint filter received in a container. This has the advantage that it can be used easily in narrow and / or difficult to access spaces of the dryer.

The heat sink can be supplied to liquid via its own, second purge line, which is independent of the first purge line. This second purge line can be connected to the first purge line to the sump and similar to the first purge line to be provided with a control member for their selective opening and closing.

Alternatively, liquid may be supplied via a single purge line which branches, for example, to the lint filter and to the heat sink. Then the first lint filter and the heat sink are rinsed simultaneously.

In a further alternative, liquid can be supplied via a purge line, which is a common for the heat sink and the lint filter control element and a switching element, for. B. Three-way valve, for selectively conducting the liquid to the heat sink or the lint filter. This means that the first lint filter and the heat sink can be individually rinsed off with little extra construction work.

In a likewise preferred development of the dryer, 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. Particularly preferred is a filter fabric which is hydrophobed. 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.

In a further preferred development of the dryer, 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; According to practice known per se, 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 such a context, it is particularly preferred that a pumping line together with a condensate pump is provided in the corresponding dryer, which connects the heat sink with the collector. In particular, the pumping line may originate from a collecting tray placed at the heat sink, in which condensate collects, which has formed in the heat sink from the cooled process air stream and deposited on the heat sink and drips off from the latter. The drip tray can be an integral part of that part of the process air duct, in which the heat sink is placed.

The genres and designs of heat source and heat sink in the dryer are not important in the first place; In principle, heat source and heat sink of any known type and design are conceivable and useful in connection with the invention. In particular, the heat source may be a heater operated electrically or by combustion of a suitable fuel such as oil and gas. In particular, the heat sink may be a heat exchanger operated with a suitable coolant, for example an air-to-air heat exchanger.

Particularly preferred is a development of the dryer, 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. It is preferred that 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. In a equipped with a heat pump of any kind dryer heat that has been supplied to the process air by the heat source and discharged from the process air in the heat sink, the heat source and through this again the process air are supplied, resulting in a significant savings in energy for the Drying process in the dryer can be connected. In particular, when the heat pump is a thermoelectric heat pump or a heat pump of the compressor type, according to conventional practice, 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. Although 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.

According to another preferred embodiment, the dryer 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.

It is also particularly preferred that the dryer is designed as a domestic appliance.

Embodiments of the invention are explained schematically below with reference to drawings. In this case, the same or equivalent elements of different embodiments may be provided with the same reference numerals for clarity. In the drawing show:

1 a sketch of a household appliance, designed as a clothes dryer;

2 a non-removable first lint filter together with first distributor for rinsing liquid;

3 a partial view of a clothes dryer in section with a non-removable first lint filter;

4 a partial view of another dryer in section with a non-removable first lint filter;

5 a partial view of yet another tumble dryer in section with a removable first lint filter; and

6 outlines a cycle of a condensed liquid of another tumble dryer.

As in 1 shown, includes the dryer 1 , here a tumble dryer 1 , a drying chamber designed as a rotatable drum 2 , what a wet good 3 , here laundry 3 , absorbs to dry. A closed process air duct 4 is provided in which powered by a fan 5 a process air flow circulates which moisture out of the laundry 3 absorbs and dissipates. In a heat source 6 is the process air before entering the drying chamber 2 heated. After the thus heated process air due to the rotation of the drying chamber 2 in this lingerie around 3 When it absorbs moisture, it leaves the drying chamber 2 and gets to a heat sink 7 , There it is cooled, so that the entrained moisture condenses out, as condensate in liquid form on the structures of the heat sink 7 precipitates and in a arranged below this drip tray 8th drips. From the drip tray 8th such condensate passes through the pumping line 9 into which a condensate pump 10 is inserted to a collector 11 , This collector 11 is designed to exit the dryer after completion of a drying process 1 can be removed to pour the liquid out of him and supply it to a suitable disposal.

Between the drying chamber 2 and the heat sink 7 is in the process air duct 4 a first lint filter 12 arranged. This first lint filter 12 is necessary to lint, these are fine, dust-like fiber particles and the like, which the flowing process air of the laundry 3 snatch out, catch, so that it does not heat sink 7 arrive and pollute them. This is especially necessary because lint that deposits on appropriately exposed surfaces of the heat sink 7 knock down the thermal conductivity of the structures within the heat sink 7 can significantly deteriorate, causing the operation of the dryer 1 impaired or even endangered. However, there is also the presence of the first lint filter 12 in the process air duct 4 not free from possible impairments, because also the first lint filter 12 Under certain circumstances, this poses a significant flow obstacle in the process air flow 4 when it clogs with lint in the course of a drying process.

To avoid this interference and also a convenient way to remove the lint from the dryer 1 to create is the first lint filter 12 a first cleaning device 13 . 14 . 15 . 16 . 17 , associated with which the first lint filter 12 using the in the collector 11 stored condensate can be freed from lint. This is to the collector 11 a first purge line 13 connected, which via a first control body 14 to one on the first lint filter 12 arranged first distributor 15 passes through which condensate from the collector via the first lint filter 12 can be distributed so that this condensate on the first lint filter 12 deposits and removes deposited fluff. Such laden with lint condensate passes through a first derivative 16 to a second lint filter 17 which collects the collected lint from the condensate, whereupon the condensate in turn the drip tray 8th flows to from this by means of the condensate pump 10 back to the collector 11 to be promoted. In the second lint filter 17 the flakes accumulate as a compact, moist lump, which is the second lint filter 17 can be relatively easily removed and disposed of. 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 heat source 6 and the heat sink 7 are incorporated in the present embodiment illustrated in a heat pump 6 . 7 . 20 . 21 . 22 , in which heat, the process air in the heat sink 7 is withdrawn, to the heat source 6 pumped and there the process air is supplied again. This is done by a closed refrigerant circuit 20 in which a refrigerant circulates. Under a refrigerant is under suitable conditions in terms of pressure and temperature reversibly vaporizable and condensable substance to understand. This substance can be present propane, Carbon dioxide or a fluorinated hydrocarbon compound such as the known R134a, R152a, R407C and R410a - the latter two substances being mixtures of several fluorinated hydrocarbon compounds. In any case, the refrigerant enters 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 it. A compressor 21 in the refrigerant circuit 20 compresses the vaporized refrigerant and delivers it to the heat source 6 , There, the refrigerant liquefies by giving off heat to the process air flowing through. In liquid form, the refrigerant now flows in the refrigerant circuit 20 a throttle 22 represented by a valve, a capillary or orifice, to where it is expanded to a reduced pressure. In this form, it returns to the heat sink 7 to evaporate again. The refrigerant circuit 20 must be completely self-contained to predict the expected service life of the dryer 1 to ensure complete enclosure of the refrigerant.

In practice, the first lint filter 12 unable to fully absorb the fluff entrained in the process air; it is always to be expected that an albeit extremely finely divided fraction of lint through the lint filter 12 passes through without being caught by him. These finely divided fluff then beat more or less completely in the heat sink 7 down, where the condensate occurring there on the corresponding exposed surfaces of the heat sink 7 adhere to it. These fluff can, if necessary, over a larger number of drying processes in the dryer 1 away, the function of the heat sink 7 significantly affect. In the present case, it is aggravating that because of the required complete sealing of the refrigerant circuit 20 a removal of the heat sink 7 from the dryer 1 is not possible for the purpose of cleaning. That's why the heat sink is 7 a second cleaning device 23 . 24 . 25 assigned, with which also in the collector 11 collected condensate can be used to the process air exposed surfaces of the heat sink 7 Rinse off and remove the resulting lint. For this purpose, a second flushing line is to the collector 23 together with an inserted second control body 24 assigned to the collector 11 with one on the heat sink 7 placed second distributor 25 combines. About this second distributor 25 condensate comes from the collector 11 to the heat sink 7 and can rinse off the lint deposited there. The condensate laden with fluff drips off into the drip tray 8th and from there by means of the condensate pump 10 again to the collector 11 fed. As the first lint filter 12 the majority of all fluff catches is the heat sink 7 loaded only comparatively low, and the depressed lint are relatively finely divided. Nevertheless, these lint, especially hair, especially the condensate pump 10 affect over time.

The Kotrollorgane 14 and 24 are each shown here as a simple valve 14 respectively. 24 , In a case where a relatively strong flow of the condensate is desired for the appropriate cleaning purpose, in addition to each such valve 14 respectively. 24 a pump may be provided. If necessary, a single pump could also be used for both valves 14 respectively. 24 be assigned.

In the dryer 1 is a control device 26 intended. This serves a user of the dryer 1 To select a program from among a variety of programs offered for the desired drying process includes a display to provide necessary information to a user and, moreover, controls all controllable components of the dryer 1 , Corresponding control lines are in 1 not shown for clarity.

2 shows a first lint filter 12 , which is constructed with a carrier 18 , which is a filter fabric 19 wearing. Along the arrow is the filter fabric 19 Traversed by process air, with lint contained therein on the filter fabric 19 be dropped off; be discontinued; be deducted; be dismissed. The filter fabric 19 consists of a surface-treated material which is water-repellent or dirt-repellent. This will improve the cleaning action of the liquid that is the filter fabric 19 overflows, but does not pass through it, when picking up the lint from the filter fabric 19 supported. Also shown is the one on the first lint filter 12 arranged distributors 15 from which the condensate used for rinsing can escape through a plurality of holes around the filter fabric 19 to overflow and absorb the lint deposited there. Moreover, it would be uncritical if a part of the liquid filter fabric 19 penetrate, because (cf. 1 ) in the process air duct 4 on the lint filter 12 anyway the heat sink 7 follows, in which it comes to the precipitation of condensate from the process air flow and the possibly permeated liquid would be dissipated together with the condensate. In 2 circular holes are shown; Alternatively, instead of the holes, a correspondingly long slot or an arrangement of a plurality of successive elongated slots may be provided.

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 signs 2 , the drying chamber 2 followed. The by black arrows symbolized process air enters the drying chamber from the top right 2 out and flows through the inclined relative to her first lint filter 12 in a direction vertically downwards, after a deflection in a horizontal direction to the heat sink 7 to get. From the only hintable first distributor 15 condensate flows as rinse water 28 over the slanted lint filter 12 , where it absorbs deposited lint, and passes through a first derivative 16 in a chamber which is formed by a removable flap 30 and a partition 29 , In a lower area is the dividing wall 29 permeable, so that the rinse water through and the drip tray 8th so that the lint remains in the lower part of the chamber. The chamber is removable, so that the lint can be disposed of.

The design of the in 4 shown dryer 1 largely corresponds to the embodiment according to 3 , although behind the flap 30 a filter bag 31 as the second lint filter 17 is provided. This filter bag 31 is made of permeable paper or textile and takes from the lint filter 12 by means of the rinse water 28 rinsed fluff on. When the filter bag 31 sufficiently filled with such lint, he can by opening the flap 30 be removed. This allows the lint to be disposed of without having to be touched directly.

5 shows a partial view of another dryer 32 in section with the now removable lint filter 12 , In contrast to the embodiments described above, the first lint filter 12 Now below and behind the flap or maintenance cover 30 arranged. The lint filter 12 is intended for cleaning out of the dryer 32 to be removed. This is the lint filter 12 in such a simple way in the dryer 32 Also, a user attaches the first lint filter 12 easy to remove, and not just a service technician. The first lint filter 12 For example, by a plug connection, a releasable latching connection, a slide-in attachment, etc., or by a combination of any of these methods in the dryer 32 be attached. By the arrangement behind the flap 30 is the lint filter 12 easily accessible. Due to the lower positioning also increases the drop height to the collector 11 , z. B. by 10 cm to 15 cm, so that the rinse water 28 at a higher speed and consequently with a higher cleaning power on the first lint filter 12 meets.

The second lint filter 17 acting as a flexible filter bag 31 is formed, is now immediately below the first lint filter 12 and from this only through one over the first derivative 16 provided in the form of a drain slot plate 35 separated. The second lint filter 17 is right on the ground 33 of the dryer 32 on. From the second lint filter 17 leads a drainage channel 34 to the drip tray 8th , To avoid spillage of water in the second lint filter 17 includes the drainage channel 34 the lowest level of the lint filter and is thus directly on the ground 33 of the dryer 32 arranged.

The one from the first lint filter 12 flowing down, with lint from the lint filter 12 staggered rinsing liquid 28 thus flows through the first derivative 16 in the second lint filter 17 , The second lint filter 17 keeps the lint back but leaves the rinse liquid 28 into the drainage channel 34 through, from where they continue to the drip tray 8th flows.

To avoid bio-fouling, the flap 30 opened and the first lint filter 12 be removed. The first lint filter 12 can then z. B. be cleaned by hand. With removed first lint filter 12 can also be the second lint filter 17 be removed, for. B. by lifting the plate 35 , making the second lint filter 17 is exposed for removal. Alternatively, z. B. the plate 35 and the second lint filter 17 be integrated into a component and be removed together.

In the embodiment shown, located next to the first lint filter 12 a recording room 36 for a picture of the heat sink 7 , The heat sink 7 , z. B. an evaporator of a heat pump, is located on a floor 33 standing frame 37 , The frame 37 has a holey bearing surface 38 for the heat sink 7 on, leaving from the heat sink 7 dripping liquid (condensed condensate water and rinsing liquid) directly into the drip tray 8th can drip. Although, in other words, in terms of 1 described the heat sink 7 flowing process air 27 through the first lint filter 12 has been filtered, nevertheless passes a small amount of particular finely divided lint, z. Hair, to the heat sink 7 , Although these lint can be partially entrained by the condensate water, but still remains a small amount of lint on the heat sink 7 which can accumulate over time and reduce the efficiency of the heat exchanger. To clean off these lint adhering to the heat exchanger, the second distributor is above the heat exchanger 25 for the rinsing liquid attached. The rinsed fluff enter the drip tray 8th and from there you can go to the collector 11 be pumped so that they possibly clean with the heat sink 7 get back to this. Also, especially hair can be in the condensate pump 10 fix.

In a dryer 44 according to an alternative embodiment, the liquid circuit in 6 is sketched, therefore, the second lint filter extends 17 additionally under the heat sink 7 , This can be implemented, for example, in that the second lint filter 17 in 5 now down to below the support surface 38 extends so that from the heat sink 7 dripping liquid into the second lint filter 17 arrives. This also allows the heat sink 7 entrained fluff be collected, leaving the drip tray 8th and consequently the collector 11 are filled with substantially lint-free condensate liquid. This will cause lint to stick to the heat sink 7 and their decomposition (bio-fouling) significantly reduced or even substantially prevented, so that there is no significant reduction in the efficiency more. In particular, by the second lint filter 17 Hair is also retained, which otherwise especially the condensate pump 10 can hamper.

For a structurally simple and individually controllable flushing of the heat sink 7 and the first lint filter 12 are the first purge line 13 and the second purge line 23 via a switching element in the form of a 3-way valve 42 together to the first controlling body 14 connected. Thus, via an optional opening and closing of the first control member and a corresponding switching of the 3-way valve 42 optionally the heat sink 7 or the first lint filter 12 be cleaned. Similar to 5 is the second lint filter 17 the drip tray 8th fluidly downstream, from which through the condensate pump 10 and the pumping line 9 the essentially lint-free condensate water in the collector 11 can be pumped.

The second lint filter 17 is from a combination of a container 39 , here in the container 39 housed filter bag 31 and one the filter bag 31 associated level control device 40 (Which can be equipped for this purpose eg with conductance electrodes). The filter bag 31 For example, when the maximum allowable (fluff) level is reached, the customer pulls it forward and optionally discards it and replaces it with a new filter bag, or cleans it and reinstates it.

In the pumping line 9 is also now another switching element in the form of another 3-way valve 43 introduced, which by the condensate pump 10 pumped liquid except in the collector 11 alternatively to an outflow 41 can carry. So can overflow the drip tray 8th be prevented.

With the invention, a new possibility is created to dispose of the fluff necessarily occurring in a dryer for laundry or the like so that bio-fouling is prevented in a simple manner.

The invention is not limited to the embodiments shown but may also combine various features of different embodiments and / or embodiment (s) and the description and / or claims.

Thus, the optional derivation of the condensate water from the drip tray 8th in the drain 41 be implemented in each of the embodiments and / or in an embodiment disclosed in the preceding description.

A dryer may be understood to mean a general laundry dryer such as a tumble dryer or a washer-dryer.

LIST OF REFERENCE NUMBERS

1

dryer

2

drying chamber

3

Wet good, laundry

4

Process air supply

5

fan

6

heat source

7

heat sink

8th

drip tray

9

pumping line

10

condensate pump

11

First cleaning device, collector

12

First lint filter

13

First cleaning device, first flushing line

14

First cleaning device, first control device

15

First cleaning device, first distributor

16

First cleaning device, first discharge

17

First cleaning device, second lint filter

18

carrier

19

filter cloth

20

Refrigerant circulation

21

compressor

22

throttle

23

Second purge line

24

Second controlling body

25

Second distributor

26

control device

27

process air

28

dishwater

29

partition wall

30

flap

31

filter bag

32

dryer

33

ground

34

drain channel

35

plate

36

accommodation space

37

frame

38

bearing surface

39

container

40

Level control unit

41

outflow

42

Three-way valve

43

Three-way valve

44

dryer

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1788140 A1 [0002]
• EP 1788141 A2 [0002, 0002]

Claims (10)

Dryer ( 32 ; 44 ) comprising a drying chamber ( 2 ) for picking up a moist material ( 3 ) and a substantially closed process air duct ( 4 ) for circulating process air through the drying chamber ( 2 ), which process air ( 4 ) a heat source ( 6 ) for heating the process air before it enters the drying chamber ( 2 ) and a heat sink ( 7 ) for cooling the process air after it leaves the drying chamber ( 2 ), as well as between the drying chamber ( 2 ) and the heat sink ( 7 ) arranged first lint filter ( 12 ) for collecting lint from the process air, wherein the first lint filter ( 12 ) in the dryer ( 32 ; 44 ) is automatically cleanable, characterized in that the first lint filter ( 12 ) by a flap ( 30 ) is reachable. Dryer ( 32 ; 44 ) according to claim 1, wherein the first lint filter ( 12 ) through the flap ( 30 ) is removable. Dryer ( 32 ; 44 ) according to one of the preceding claims, wherein the first lint filter ( 12 ) a second lint filter ( 17 . 31 ) is fluidly connected downstream. Dryer ( 32 ; 44 ) according to claims 2 and 3, wherein the second lint filter ( 12 ) through the flap ( 30 ) is removable. Dryer ( 32 ; 44 ) according to claim 4, wherein the first lint filter ( 12 ) and the second lint filter ( 12 ) in each case and / or together through the flap ( 30 ) are removable. Dryer ( 32 ; 44 ) according to one of the preceding claims, further comprising a first purge line ( 13 ), one in this first purge line ( 13 ) first control body ( 14 ) and one to the first purge line ( 13 ) connected first distributor ( 15 ) for distributing through the first purge line ( 13 ) conveyed liquid onto the first lint filter ( 12 ). Dryer ( 32 ; 44 ) according to claim 6, which has a second flushing line ( 23 ) and one to the second purge line ( 23 ) connected second distributor ( 25 ) for distributing through the second purge line ( 23 ) conveyed liquid on the heat sink ( 7 ) having. Dryer ( 44 ) according to claim 7, wherein the second lint filter ( 31 ) in addition to collecting liquid from the heat sink ( 7 ) is furnished and arranged. Dryer ( 44 ) according to claim 8, wherein the second lint filter ( 31 ) at least partially below the heat sink ( 7 ) is arranged on its upper surface and at least one passage for the heat sink ( 7 ) has collected fluid. Dryer ( 44 ) according to one of claims 8 or 9, in which the second lint filter ( 31 ) a level control device ( 40 ) having.

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