DE2933513C2 - Tumble dryer with condensation device - Google Patents

Description

The invention relates to a tumble dryer with a lying in the upper area of the dryer, removable condensate collecting vessel, a level monitor for the condensate and a condensation device located in the lower area of the dryer, which has a condensate collecting container having.

A tumble dryer of the aforementioned type is known from DE-AS 22 32 911. This owns in the lower Housing area a preferably air-cooled condensation device, which the drying air flow which removes moisture. The condensate liquid occurring in the condensation device is converted into a Collective capacity pumped up, which is provided in an easily accessible place behind the switch panel of the dryer is. The condensate collecting vessel must be emptied from time to time by the operator, whereby to save space, the collecting vessel is not designed much larger than it is for dehumidifying a maximum Laundry is necessary.

The advantage of the dryer described above is that it has to take precautions for condensate drainage can be dispensed with. As a disadvantage, however, are the complex measures to be considered Level monitoring of the condensate collecting vessel must be met.

In the embodiment according to DE-AS 22 32 911, the collecting vessel with one of the minimum is for this purpose and switching device which detects the maximum liquid level.

In addition, it is known from DE-PS 22 56 404 to use a condensate quantity measuring device, which uses an indirectly acting switching device on the collecting vessel, so that the transition game oble me / wipe the built l'ülistandsgclxTii and to be avoided from the denchnable S; tmniel »cräß, s But here, too, is a complex and Failure-prone filling liquid-rwacluing.

The invention is based on the object of a Wii to create scheldryers according to the generic term, he the problems of level monitoring for the

ίο The condensate collecting vessel is switched off and at which the level monitoring is arranged to be operationally safe

The solution to this problem is achieved by the features characterized in the main claim. Further Features and configurations of the invention result from the following · - »I inictiiiispriu-lu-ii.

Due to the successful training, the dryer with a condensate collecting vessel is created in which the filling level of the collecting vessel can be easily included in the drying program and in which complex and fault-prone measuring devices are avoided in the area of the collecting vessel receptacle.
The invention is explained in more detail below with reference to an exemplary embodiment shown schematically in the drawing

F i g. 1 a clothes dryer in a simplified structure from the side in section,
Fig. 2 in the block diagram the control part of the dryer with the condensate volume monitoring.

In FIG. 1 shows a tumble dryer 1 with a rotating drum 2, only those for explanation the details necessary for the invention are listed.

In the lower area of the dryer 1 is the condensation device 3 arranged, which removes the moisture from the drying air flow. The condensation device 3 consists essentially of the air-cooled condenser part 4 and the collecting container S for the condensate. In the collecting container S is a symbolically represented level sensor 13 as overflow protection arranged. The condensate liquid occurring in the collecting container 5 during the drying process is fed to a condensate collecting vessel 8 by means of a pump 6 via the feed line 7. The condensate collecting vessel 8 is at an easily accessible point behind the switch panel 9 in a creaming space 10 housed. Here the operator can easily empty the during a Any condensate that accumulates in the drying program can be removed.

The receiving space 10 is connected to the condensation device 3 via a drain line 11, so that overflowing or sloshing condensate liquid back into the collecting container 5 of the condensation device 3 can flow back.

In the following, together with the one shown in FIG The block diagram shown shows the monitoring of the amount of condensate in the above-described dryer system explained.

It is initially assumed that the program will start in which there is still no liquid in the condensation device 3 and the condensate collecting vessel 8 is located. The air-cooled condenser section 4

b ¹ ; Condensate liquid that falls out during operation drips into the collecting container 5. The condensate is pumped up into the collecting vessel 8 by means of the pump β. In a preferred embodiment, the clic pump is

pe 6 operate at intervals a This can be state-dependent via known, on the liquid level in the collecting container 5 responsive level sensor or time-dependent from the program switching mechanism auy. ; I If the space in the dryer allows it,

it is possible due to a larger capacity of the collecting container 5, with a pumping up at that time the condensation liquid to get along after the end of the dehumidification phase.

In the exemplary embodiment in FIG. 2, the program switchgear is combined with the central control unit in block 12. The level sensor 13 acts as overflow protection, while a program contact of the program switchgear 12 is shown at 14. The pump 6 is symbolized in block 15. | L The operation of this control arrangement is as V follows: pre-programmed, the circumstances angepaß- t th time intervals, the pump 6 from the pro-

t "program contact 14 on and off, so that the continuously f condensate liquid in the condensate-Sammelge- * barrel is pumped. 8

Γ The time intervals for energizing the pump

S can be sent directly from a timer in the program control unit 12 or z. B. can also be determined by the reversing encoder of the drum control.

Instead of the time-dependent control, there is of course also a state-dependent control via a corresponding one Level sensor with two level switching points conceivable.

After completion of the drying process, the condensate collecting vessel 8 must with the accumulated condensate liquid can be emptied by the operator so that the next drying cycle runs smoothly can be carried out. The dryer control can do this at the beginning or at the end of a program Signal aids are activated to indicate the emptying or checking of the empty state. Of course, a simple visual monitoring could also show the BenMtxer the filling level of the collecting vessel 8 show. However, due to neglected emptying during operation, the condensate collecting vessel should overflow 8 come, the overflowing liquid wedge is returned to via the drainage line 11 : the collecting container 5 flow. This has the consequence that

The liquid level rises in the collecting container 5 until the level sensor 13 responds. The level sensor 13 can now supply the program switching mechanism 12 with a switching pulse, as a result of which different control steps can be triggered. Here it is important to interrupt the drying program or, for example, to switch it to the air conditioning phase so that further condensation is prevented. At the same time, an optical and / or acoustic display device 16 can be energized in order to indicate the malfunction. _w

Ik'i the vorbeschriehenen arrangement no problem, even in the absence Koiulciisiil-SamnuMgcfiiU arise (! L i the KoiulcnsiilNtisMgkcii on Ablaufleiini £ Il your storage container 5 is returned to the l'iillstai 'Js | ieber 13auslöst _M!).

For this I I) IiIiI drawings

Claims (4)

Patent claims: 1. Tumble dryer with one in the upper area of the dryer located, inchmable condensate collecting vessel. one filling land monitoring for the accumulating condensate and one in the lower area condensation facility located in the dryer. which has a condensate collecting tank, d a through characterized in that the receiving space provided for the condensate collecting vessel (8) (10) Via a discharge line (11) with the condensate collecting container (S) of the condensation device (3) is connected, and that the FQlI level monitoring is assigned to the condensate collecting container (5). 2. Tumble dryer according to claim 1. duditah characterized, that the level monitoring includes a level sensor (13) that the program sound system (12) when a certain amount of condensate is exceeded, a switching pulse is sent to a to prevent further dehumidification. 3. Tumble dryer according to claim 1 or 2, dadurch.daß after crossing a certain amount of condensate in the collecting container (S) an optical and / or acoustic display device ^) is activated. 4. Clothes dryer according to one of claims 1 to 3, characterized in that the pump (6) for Conveyance of the condensate liquid by state- and / or time-dependent control means at intervals can be switched on.