DE6602400U - LAUNDRY MACHINE EQUIPPED FOR WASHING AND DRYING. - Google Patents

Description

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SIEMENS-ELEOTROGERATE GMBH Erlangen,

Berlin and Munich flerner-von-Siemens-Str. 50

Our reference: PLA 67/5009 Gre / Zp

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Washing machine equipped for washing and drying

The novelty "refers to one for washing and drying equipped laundry treatment machine to prevent foam, air or steam from escaping into certain areas of the Machine a lockable shut-off device, e.g. B. has a flap, a slide or a Y-valve. Such shut-off devices are important because foam, air or steam escapes from the drum container or the condenser area of such machines

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can lead to malfunctions in other engine rooms. For example the transfer of steam or water into the heating device of the air duct or into areas of the machine at all, where electrical system components are installed, to serious malfunctions to lead.

innovation
The X353? SK & $ ȣ has a special design for such closing

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bar shut-off device in the air duct to the subject. the closure is adjusted by a hydraulic drive, which depends on the washing or drying process '' Selector switch one for washing and one for drying sets the other end position of the lock. Such a hydraulic adjusting device can be with simple and produce cheap constructive means and works very reliably. In the vast majority of cases, the hydraulic can Drive with other, anyway in tfaschethandlungsnaschinen existing Wasserleitur.gssystenien combine so that also the added benefit that can be achieved is that special

Control organs are avoided. A particularly simple new possibility tion

The ability to apply the 2x £ i2o £ xKg results, for example, from can branch off a water pipe connected to the hydraulic drive of the closure from a water pipe that the water for the washing operation or for the condenser at Drying supplies. The hydraulic drive for the closable shut-off element in the air duct can therefore inevitably JüBEier are operated when the water pipes for washing or dryer operation can be switched on and off. Han cards hydraulic drive, for example depending on len selector switch

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ter, who determines the washing or drying, thereby v / irksan make that the selector switch, possibly together with one time- or state-dependent switching element (control unit) Solenoid valve actuated, which the water pipes sum condenser for drying and for hydraulic drive of the closure opens.

There are various advantageous options for implementing the hydraulic drive. The water pressure on the work element of the hydraulic drive can advantageously be carried out by a throttle element located downstream of a flow regulator in the direction of flow (e.g. a pressure regulator). The hydraulic drive can also be subjected to the full water network pressure by placing the hydraulic line in front of a flow regulator (i.e. immediately after the shut-off valve Ci.) is connected. The movement of the working element of the hydraulic drive can be done against the action of a return spring, which is arranged so that the shut-off device when the wax pressure is removed is adjusted to an end position. There are also various design options for the shut-off device itself. In particular, it can be designed as a flap which can be pivoted about an axis of rotation and to which a working element is attached of the hydraulic drive moving adjusting rod is articulated. The shut-off device itself is able to function properly Ensure a seal against the penetration of steam and water, Assign a suitable elastic, sufficiently temperature-resistant seal, e.g. made of silicone rubber. Instead, it can also be used in the canal an elastic seat can be arranged against which the MetallklapFe

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is pressed. When ^A · the shut-off devices as associated with the channel flaps isführung can choose such a shape with a particular advantage that the flaps act in the open position than the channel guide adapted guide vanes. The working elements, which carry out their movements depending on the pressure of the liquid, in particular of the water pressure, can have very different fora haboi. It is essential that they have a sufficient adjustment force and an adjustment path that corresponds to the flap movement.

A hydraulically operated shut-off device can be found in particular one from the fan via an electric heater to the blow-in opening the drum leading up and down air duct place. The shut-off element is then located in the descending area of this channel, so that the off when washing the foam rising up from the drum and the possibly entrained Liquid are prevented from passing into the heating channel.

innovation
SjEfirabsüsg can be used in laundry treatment machines designed for washing and drying in a single drum, but also in washing combinations that have a drum set up for washing and drying and an additional spin drum. In designs of the last-mentioned type, two hydraulically operated shut-off devices can be provided, one of which is in the descending part of the air inlet duct, the other in the connecting duct between the tub and the centrifugal compartment serving as a condenser during drying. A simple actuating device results when both shut-off devices are moved by a common hydraulic working element.

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I ^{1 The} following additional safeguards can be used to prevent the automatic flap adjustment from failing. A temperature limiter can be provided in the area of the radiator, which switches off the heating if the dex fan fails and if the amount of air is too small because the flap is not opened or not sufficiently wide. The washing and drying functions can only be released via special limit switches when the flap has reached the associated position. If foam or lye rolled into the sewer when the flap is not closed or is not closed properly, the machine can be switched off by additional safety devices. Can this purpose, preferably a suitable location type of the channel, eg in the area of the channel arc electrodes be provided off (^ ie ^w ith low voltage via a relay the engine. E'ne other backup may be that at too low water pressure or When the Y barrel line is shut off, the entire machine or only one of the functions, namely the drain function or only the ash function, is switched off.

innovation
Further characteristics essential for the Ex & fcafomg are specified in the

Treated the following embodiments.

Figures 1 to 3 show schematically some possible embodiments for laundry treatment machines equipped for washing and drying with hydraulically controlled flap in the air system. FIGS. 4 to 7 show circuit diagrams for waterways that are assigned to the hydraulic drive. Figures 8 and d

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'} 9 show possible ways of limiting the water

j pressure on the working element, and in Figures 10 to 19 are different Embodiments of working elements for hydraulic Control shown.

In Fig. 1 is schematize !! a section through a * The laundry treatment machine operating on the melter principle is shown. In

I outer housing 1 is the tub 2 with the built-in

I th laundry drum 3 arranged. At the bottom are a tub

I drain pipe 4 unü a drain pump 5 connected. The machine

I can be operated from above. For this purpose, in the upper deck

A control flap 7 is provided in the frame 6 of the machine. For

\ the drying is a supply air duct 8 on one front side of the

\) machine arranged. In the supply air duct are a fan 9 and

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\ one in the area of the radiator 10 upwards and in the area of a

; Flap 11 downward part. It ends "at the inlet opening. {

12, which is assigned to the TrocmeIstutelager of the machine. Lie Flap 1 is hydraulic from one work cent when drying 13 against the action of a return spring 14 via the lever 15 and 16 open and adjusted during washing by the return spring 14 in the closed position shown in dashed lines. Therefore prevent foam and water vapor from entering the area while washing the radiator and the fan step over. To when not closed To secure the flap 11 against damage, there are two electrodes 17 in the highest area of the air duct 8 arranged, which has been bridged by foam or lye transfer and the shutdown of the washing drum movement, appropriate

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also the heating with the help of a relay, not shown cause.

If the working element is designed for very low pressure, a large stroke volume must be used »In this Pail is

the space between the tub and the housing wall part often increases small, so that it is then advantageous to use the Arueitselement lsi Machine compartment itself to be arranged below the tub. For this purpose, an exemplary embodiment is shown schematically in FIG. 2. As far as the items match those in Fig. 1> f

men, the same reference numerals are used. In this case, a hydraulically operated bellows 18, which is located in the compartment 19 below the tub 2, serves as the working element for actuating the flap 11. For this work element 18, a large diameter and a small stroke is to be preferred "for the transmission mechanism consisting of the levers 20 and 21, the cable 22 and a return spring 23, are in accordance with regard to assembly inaccuracies, thermal and mechanical distortions long travel ranges in small forces should be taken into account.

An exemplary embodiment for a washing combination with a drying device is shown schematically in Fig. 3 in the housing 24 of the machine is a tub 25 with built-in Washing drum 26 and a centrifugal housing 27 with a built-in centrifugal drum 28 are arranged next to one another. The supply air duct a fan 30 for drying contains the electric heating element 31 i * nah one flap 32, actuated by the hycraulicch

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Piston 33 is to be adjusted via rods 34, 35 from the closed position shown in dashed lines into the illustrated open position. The leakage water exiting through the pipe 36 is directed into the liquor container or also into the centrifugal container. In the air channel 37, which leads from the upper part of the tub 25 to the lower part of the centrifugal container 27, a second flap 38 is provided, which can be adjusted by a cable 39 simultaneously with the flap 32 nu. The flap 38 can prevent foam or steam from escaping into the centrifuge housing during washing. The impeller housing 27 is designed as Sprühkondensat ^or. · In this case. For this purpose, an annular cooling water line 40 is provided in the area above the centrifugal drum. A tension spring 41 is assigned to the cable 39. When open, the two flaps 32 and 38 serve as guide vanes to improve the flow pattern, because their shape prevents the flow from being torn off at the deflection parts. Notwithstanding the embodiment shown, Kan can also assign a special worker to each of the two flaps.

There are various options for switching the waterways. Yfenn ash treatment machines with cold water condensation devices come into consideration, the flaps open hydraulically when cooling water pressure is available. The connection of the hydraulic line can take place between the shut-off of the solenoid valve and a flow regulator in this case is preferably "In this case, it is for the actuation of the hydraulic drive virtually the full mains water pressure available to =

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Closing the flap can preferably be spring force, but optionally also the own weight. There can be fuses can be provided in the form of blocking switches, which prevent the machine from operating in the wrong direction (washing ”when the flap is in position Prevent "drying" and vice versa) in order to exclude shields in the case of stuck flaps, lack of water pressure, etc.

Fig. 4 shows a water pipe plan. The water inlet of the machine is designated by 42. At the branch point 45, a water line 44 is branched off, which leads to the valves 45 and 46 for the WasGhbetrieb, via a valve 47 the water flow in a line 4Q is controlled. The water and hydraulic system, which opens the flap, flows through the branch 49, while the line 51 containing a flow regulator 50 leads to the condensation device of the dryer.

In the case of machines without cold water condensation devices, on the other hand, the operation is advantageously carried out in such a way that the flaps are hydraulically closed and opened by spring force or the like . in this case the hydraulic lines are connected to the main water line of the machine. Drying was only possible when this line was depressurized, and since the main water line of the machine had to be connected to the water supply for washing, the flaps were closed during washing.

Fig. 5 shows the associated waterways. Yon of line 42 are

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those intended for the washing operation, the valves 45 and 46 ent holding lines branched off. The continuous line 52 leads to the hydraulic system which closes the flap.

According to FIG. 6, machines with capacitor devices can also similar to the one in Pig. 5 shown circuit are listed. From the main line 42, the water inflow branches again here for the washing operation leading lines with the valves 45 and 46 from. The cooling water flow is via the valve 53 branched off for drying operation. To the hydraulic system that the Klapp-n in the pail closes when the pressure only "at a (washing operation), and it opens when pressure a and b (dryer operation) occurs, lines 54 and 55 lead. B. by spring force) opened when the difference between a and b is very small. With 56 are in the Tig. 4 "to 7 range controls designated.

In all systems, it is possible to limit the pressure acting on the working elements and thus also the forces on the transmission system and the flaps by the fact that - viewed in the direction of the opening - there is a defined throttle body behind the flow regulator, so that at constant Flow due to the function of the flow regulator upstream of the throttle device a testinuater _? pressure adapted to the effect of the working element. Such measures can be dispensed with if ("i3 working _elements: the adjusting mechanism etc. can also cope with the highest pressure to be expected in the water network. A sufficiently precisely defined pressure is particularly easy to achieve, as a throttle

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organ a simple pressure regulator is used. In Pig. 7 the wiring diagram is initially drawn schematically for this purpose. The pressurized water passes through the line 42 and reaches the pressure regulator 57 via a flow regulator 56 and from this sun outflow the working element 59 is connected to the line 42 at branch point 60. 8 shows the pressure regulator 57 which can be used for this purpose. In this case, the pressure depends on the elasticity of the disk 61 and the cross section of the central hole 62 in this disk. Tig. 9 shows another embodiment for a pressure regulator. The valve cone 65 is so flat here that no self-locking can occur.

The pressure regulator should not close completely tightly if it falls below a value that is significantly below the normal flow rate, so that the pressure falls when there is no flow, the working element thus returns to its rest position. read is in a manner known per se through one or more openings 64 between the high and low pressure side of the Rc £ ler or also achieved by a shape of the valve seat or cone adapted for this purpose.

Who.n the flow rate (e.g. by the flow regulator 56) is sufficient is precisely regulated, the working pressure can also be reduced to the desired value can be held that the Irucl: rc £ ler 57 through a (not shown) rigid throttle organ (llende, capillaries ■ o.ü.) is replaced. In many cases, the pressure drop in the line system connected downstream of the flow regulator 56 (e.g. cooling water supply) is sufficient with spray nozzles).

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Components known per se come into consideration as working elements. For example, a cylinder with a piston can be used for reciprocating or rotary motion. Furthermore are Menbrjjidosen, bellows or corrugated pipes and also others elastic, deformable hollow bodies, such as hoses, lall, Bourdon tubes or the like. suitable. Particularly simple execution without stuffing box orneri are preferable. The material used is corrosion-resistant Metals, Crucmi, but especially elastic plastics into consideration. The expansion body of the Arteitselenente made of plastic or rubber can also be in a metal housing be built in that these parts only or predominantly have a sealing function, while the forces predominantly from metal parts be included.

Eif.e number of possible embodiments for working elements is shown in Figures 10 through 19th 10 shows a plastic sleeve 65 into which a plastic bellows 66 is inserted using a welded joint 67. The actuating plunger 69 of the element is attached to the lower cap 68 of the bellows. The pressurized water line 70 is connected to the bottom of the sleeve.

11 shows an embodiment for a hydraulic piston 71 which works in a cylinder 72. 73 is the one attached to the piston Plunger, 74 the pressurized water line and 75 a leak water drain.

Me using a Bourdon tube as a working element is in 12 is shown schematically. The one under the is dashed

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The end position of the pipe reached by the pressure water effect is shown in the lever 76 of the tube 77 actuates the corresponding flap can perform. You can also - as in Pig. 13 and 14 shown is a Bourdcn screw, which under the influence of the Druckgasser executes a rotary movement, use it as a working element.

The application of a plastic or rubber expansion body 78 into one Hetal! Housing 79 as a working element is shown in FIG A flexible body carried by a hose or ball actuates the plunger 80. With 81 is the pressure line enclosed on it designated.

The arrangement of a working element ″ 82 designed as a bellows with the valve disk 83 controlled by it in the air duct 84

the dryer shows Pig. 16. The end position 85 is shown in dashed lines, in which the channel is closed.

rig. 17 shows the working element 86 shown in FIG. 10 in FIG Connection with a flap 87, which is assigned to the Kar.al 88. The position of the lever 89 is dashed for the closed flap indicated.

Fig. 18 shows a tubular working element 90 which the arranged in the air duct 91 pivotable flap 92 from the illustrated adjusted to the dashed bottom position.

An embodiment for the closure of the shaft duct

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Pig shows the Scii ¹ euder a washer-dryer combination. 19-la contrast to those in Pig. 3 illustrated embodiment

on this machine the centrifugal drum rotates during the

'Drying not for the purpose of atomizing water. At 93 that is

Slider housing, with 94 denotes the centrifugal drum. The intermediate bottom 95 separates the upper part 96 of the housing of the motor 97 lower j-containing partial With 98 of the air duct is sawn

j. draws the air out of the tub. Un one

To prevent the passage of vapors into the machine compartment 99 during drying, possibly also by Sehaun during washing, see below, a hydraulically operated bellows 1CO is provided which, when connected to a water pressure line (not shown), closes the gap between the during drying, possibly also during washing The drum base 101 and the intermediate base 95 are closed. This prevents moisture from entering the machine compartment and the resulting corrosion of the centrifugal motor. Preferably, this device is only used to close the v / eller bushing during the drying process. The crossover during washing can be prevented by the flap 38 shown in} Pig = 3.

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21 claims
19 figures

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Claims (21)

protection 1. Laundry treatment facilities equipped for washing and drying machine that has a lockable system to prevent foam, air or steam from escaping into certain areas of the machine Has shut-off device in the air duct, thereby jgeker.nzei_chne_t that the closure is adjusted by a hydraulic drive, one for washing and the other for drying Sets the end position of the lock. 2. Arrangement according to claim 1, characterized in that the hydraulic adjustment drive depending on the washing or Drying embroidery selector works. 3. Arrangement according to claim 1 or 2, characterized in that a water line connected to the hydraulic drive of the closure is branched off from a water line that carries the Water for washing or for the condenser when drying feeds. 4. Arrangement according to claim 1, 2 or 3 »characterized in that that the selector switch and / or another electrical control device a solenoid valve is actuated, which the cooling water flow to the condenser for drying and the line to the hydraulic The shutter drive opens. 5. Arrangement according to claim 1 or one of the following, characterized in that on the Arfceitselement of the hydraulic drive practically the full pressure of the water net works. - 15 - 6. Arrangement according to claim 1 or one of the following, characterized characterized in that the water pressure at the work eleaent is hydraulic Drive by one behind in the direction of flow A throttle device (e.g. a pressure regulator) is determined is c 7. Arrangement according to claim 1 or one of the following, characterized in that the working element of the hydraulic drive against the Yfirkung a! return spring works that the shut-off element if there is no water pressure adjusted in the end position. 8. Arrangement according to claim 1 or one of the following, characterized characterized in that the hydraulically operated shut-off element in the air inlet duct of the Trcckensystcrr.s εν / is before η of the heating ir.direction and the injection opening is arranged. 9. Arrangement according to claim 1 or one of the following, characterized in that the hydraulically operated shut-off element in descending area of a fan leading to the blow-in opening of the drum via electric heating elements: L- and downward guided air duct lies. 10. The arrangement according to claim 1 c.S> 2r one of the following, characterized marked, deT the shut-off device an elastic seal (e.g. made of silicone rubber). 11. Arrangement according to claim 1 or one of the following, characterized thereby. that in the field of electric radiators Temperature limiter that switches off the heating current when the fan says ve and when the amount of air is too small because the flap is not or not sufficiently wide open. 12. Arrangement according to claim 1 or one of the following, characterized characterized in that the washing or drying functions of the machine can only be released via limit switches when the flap has reached the associated end position. 13. Arrangement according to claim 1 or one of the following, characterized closed flap by foam or lye transfer into the air duct, preferably by bridging preferably in the duct section between the radiators and the flap arranged electrodes, is switched off. 14. Arrangement according to claim 1 or one of the following, characterized by using a pressure switch, which can be activated if the water pressure is too low or if the water pipe is shut off the entire machine or just the drying or only the washing process switches off. 15. Arrangement according to claim 1 or one of the following, characterized characterized in that the work element is designed for low working pressure and because of its large stroke volume in the machine compartment is under the tub, while a cable to the (or those) preferably above the TrcEmelachse Shut-off device (s) leads. 16. The arrangement according to claim 1 or one of the following for a Washing combination that can also be used to dry clothes in the drum of the Washing part is set up, characterized in that two - 17 - 602400 ,, ill ti Il Hydraulically operated locking devices are provided, one of yours in the descending part of the supply air duct, the other in the Connection channel between the tub and the condenser the centrifugal compartment used for drying. 17. The arrangement make claim 16, characterized in that both locking elements of a common hydraulic work element be moved. 18. Arrangement according to claim 1 or one of the following, characterized characterized in that the shut-off devices are flaps of such a shape that they are adapted to the channel in the open position Guide vanes act. 19. Arrangement according to claim 1 or one of the following, characterized characterized in that the working element itself is also used as a shut-off device works. 20. Arrangement according to claim 16 or one of the following, characterized in that the necessary for shaft implementation Opening between the inside of the slingshot housing and the machine compartment closed during drying and / or during washing by a hydraulically operated working element will. 21. The arrangement according to claim 20, characterized in that as Hydraulic locking device, a bellows, is used for drying between the centrifugal gun death and the clearing of the centrifugal housing closes the gap. - 18 - 2400