DE2443300A1 - PROCEDURE FOR LOOSENING LAUNDRY AFTER SPIN IN A WASHING MACHINE AND DEVICE FOR CARRYING OUT THIS PROCEDURE - Google Patents

Description

FPHN 718 2 RJ.

Ann · ..:. ··. N.V.Philips' Gloei'an-.penfabneken

File No. p HhJ Ί
Registration from;

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"Method of loosening laundry after the spin cycle in a washing machine and apparatus for performing this method ".

The invention relates to a method for loosening laundry after the spin cycle in one Washing machine, whereby the spin cycle distributes the laundry in the form of a ring around the circumference of the drum the introduction of a limited amount of water through this ring loosening this ring and put the Ilin under all the laundry in the drum brings and relates also to a device for wetting the. Laundry to apply the above mentioned

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The phenomenon of laundry piling up during spinning has several causes, one of which is most important are:

- the stapling of the laundry on the wall of the drum,

- the hooking of the fibers through the holes of the quiver of the drum and in the corner parts,

- the intertwining of the fabric

and as a result has that on the wall of the quiver Drum a semi-rigid ring is formed from laundry items.

The factors that influence the formation and tightness of the laundry ring are not all equally important. So the spin time only has a noteworthy influence at speeds over 100 revolutions per minute. The spin speed that presses the laundry against the wall, which is done with a higher force, depending on the higher speed, only has an effect depending on the degree of wetness of the laundry. In the end, the most important factor is the amount of water that goes through the laundry during spinning, it is the mass of water that determines the pinning of the fibers through the holes in the quiver and the formation of the ring through pressure on the interwoven laundry mass. '-

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The loosening of the laundry, i.e. the crime of semi-solid ring that was created during spinning is a necessity in washing machines, and drying to enable quick and convenient drying. It is also psychological Respect important for the user; the laundry appears on the front loading washing machines soft and does not seem to be exposed to tension, while the machines are filled with the user does not see the laundry bevel going along the holes and does not have the impression that the laundry is wearing out. In addition, opening the door, which is not obstructed by laundry, is easier.

Viasch machine manufacturers have many Processes and devices examined ztim avoidance or loosening the * ring made of laundry items. Two sets of procedures have been used, namely:

1. The laundry is after the wash cycle and exposed to a number of short spin impulses with subsequent mixing after the water has run off, as well as one a longer spin cycle, followed by a mixing process in line with the washing cycle, or

2. You put the laundry in a normal spin cycle after which the laundry locally by water injection tion is wetted when the drum is at a standstill. The laundry is then mixed at washing speed, where.after Finally, a spin cycle and a new mixture follow.

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The first procedure, the ^ in the French Patent I.268.36I is very useful significant stability problems with it because of this Process an intricate system of power interruption and restart at strong amplitudes of the wash block requires.

The second procedure, the '^ T in the French. Patent specification 1.307 * 822 makes one controlled supply of water necessary and the amount of supplied water that really wets the laundry, is the ratio of the perforated quiver surface proportional to the total quiver surface, with a minor part of the injected water in the Ring can penetrate and there is a risk that one is obliged to supply a large amount of water, the holes generally protruding from the drum and thereby dispersing the ingress in small quantities Prevent water.

The inventive method intends the introduction of water through a 'device outside to avoid the storage of water when restarting in an in or on the drum "existing container takes place".

The device for wetting the laundry for applying the method according to the invention is a passive element that uses gravity,

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The method for loosening laundry after the spin cycle in a washing machine according to the invention, wherein the laundry distributed in the form of a ring on the circumference of the drum and wherein the wetting of part of the Ring the crime of the ring and falling down who brings laundry into the drum knows that Indicates that the water in a wetting device arranged on the drum during the spin cycle is held, of which at least one element for introducing the water into the washing ring in near the cylindrical surface of the drum lies, with the Einfü'jreii of the water in the ring below the influence of gravity after spinning.

According to an execution form of this procedure the filling of the Borie'tzungsvorrichturig (s) at restart carried out for spinning 'when the vat is full of water *.

The denetting device according to the above procedure consists of at least one water space, which is connected to at least one element for introducing the water into the laundry ring, said Container and said introducer member are carried by the drum.

According to further forms of execution:

- the water tank is ring-shaped and on

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the cylindrical drum wall arranged and with connected to at least one element for introducing the water into the laundry ring, and consists of one according to the descriptive ramp arranged on the drum,

- the water space is ring-shaped and arranged on the cylindrical surface of the drum, wherein the element for introducing the water into the laundry ring consists of at least one opening which is provided in that part of the element that is closest to the drum axis,

the water container ^{1 is} ring-shaped and arranged on the cylinder surface of the drum, the E3 unit for introducing the water into the laundry ring consisting of at least one driving rib, the drum, which contains at least one opening in a part near the tip,

- the water tanks are provided with partitions,

- The wetting device consists of at least two elongated compartments which, according to the description of the drum, lie, the element for

Introducing the water into the laundry ring is formed through at least one opening in at least part of the wall of the abovementioned department nearby • the drum axis lies,

- the named water tank is through

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part of the driving rib of the drum near the cylindrical surface of the drum formed and that

Element for introducing the water through at least one opening in at least a part near the Tip of the driver tip is provided.

The elements for introducing the water in at least a part near the top of the Driving ribs are provided consist of at least one row of openings on the side of the driving rib in the direction of rotation of the drum during spinning and near the tip of the same.

The mentioned elements for introducing the water contain a second series of openings that open the side of the driver rib 'against the diet I exercise the drum are arranged during spinning. · '

The openings mentioned have a flow resistance for water that is bigger than the openings, those on the side in the direction of rotation when ScbJLevidern lie.

A third row of openings is at the top of the drive rib.

Embodiments of the invention are shown in the drawings and are described below described in more detail. Show it:

1 shows a section and a side view

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a machine whose drum is equipped with a wetting device is provided, which consists of the driving ribs of the drum,

Fig. 2 is a section through a washing machine through the axis of the drum, said drum has two embodiments:

in the left part of the figure an annular container is visible, with the element for introducing the water consists of columns, and the right part shows a ring-shaped container that acts as an insertion element of the water uses the drum's driving ribs,

Fig. 3 is a section through the machine through the plane of the drum axis, said drum is provided with a wetting device through the driving ribs of the drum are formed,

Fig. Ha, kh, hc, hd, Ue ₁ kf schematic representations of embodiments of the wetting device,

5 shows a section through a wetting device .

Figures 1 and 2 show a top loading washing machine made by the method of the invention works and embodiments of the wetting device, for the Av as before included.

This machine contains a vat 1 which has to be loaded from above «and in which a ·

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Drum 2 is located with a horizontal axis. This tub is supported by spring legs with shock absorbers 3, of which there are 3 in this embodiment. The spring legs 3 are fastened on the frame k of the machine by means of rubber rings 6 which enclose the fastening elements 7 arranged on the tub. A motor 8 arranged on the lower part of the tub transmits the rotary movements by means of the belt 10 to the pulley 9 of the drum 2, which are determined by a manually operated electrical switch for a semi-automatic machine or by a program switch in the machine shown as an example will. The program timer controls the speed of rotation of the motor: a low speed for washing, a high speed for spinning and also the order in which the direction of rotation is reversed when washing.

The electrical control arrangements of the machine are attached to a control panel in the exemplary embodiment. The device for discharging the water comprises an electric pump 12 shown in FIGS. 1 and 2.

represents, which contains a removable cover 13, where- " "can be reached through the filter", the pump body on the one hand by means of a pipe 14 with the outlet opening of the tub and on the other hand through a pipe 15 with the water discharge for used water.

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that is. The water is supplied by means of a double solenoid valve 16, which is controlled by the program timer is controlled. The two lines 17 and 18 feed on the one hand the tub of the machine and on the other hand the detergent container * 19> which is shown partially in section in FIG. The heating elements 20 lie at the bottom of the tub in a protruding part 21 opposite that on the cylindrical part of the tub the opening with the filling funnel 22 is provided. The switching on of the heating elements is controlled by the program switch and the temperature of the water is regulated by a thermostat 23, which interrupts the heating when the desired temperature is reached.

The hopper 22, which is on an opening of the tub 1 is provided with a door 24. On either side of the opposite Sides of the hopper and along the width of the drum are balancing weights 25 by means of Tie rods 26 attached to the tub.

The axx £ this way whole described is located in a casing 27 which is closed at the top with a lid 28th The drum 2

(Fig. 2) carries openings on the sides into which the. · "': * ·'. ■: ■; ■■■ <>'·. · ·'". '■''· ■ . ":' · '"

Axles 29 and 30 are attached to the bearings • 31 and 32 work together from vat 1

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will wear. The axis 29 is beyond the flange of the tub for fixing the disc 9 on the aforesaid Axis continued.

The drum shown in Fig. 2 is distributed in the vertical plane, Λv ^τ obei the figure parts created in this way represent two embodiments of the wetting device. On the left part of the figure there is an annular space 33 on the edge and on the inner wall of the drum case. The elements for introducing the water century consist of holes or columns which is at or near the wall of the compartment, the ah closest the axis of the drum ^1, are provided. In this embodiment, with the container being arranged at the junction of the drum wall with the quiver, the device for introducing the water is directed towards the center of the drum.

The right part of the figure shows a second embodiment, the annular water container 35 is also arranged on the edge of the drum at the connection of the wall with the quiver, and wherein the device for introducing the water through the driver ribs 36 is formed. These ribs, which are closed, are with one of the edges with connected to the water tank 35 and wear at the top Openings 37) from which the water is removed when the Speed escapes.

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In the embodiment according to FIG. 3, the water containers have an elongated shape and are accordingly placed the descriptor of the drum. According to the embodiment, the water tank and the device " for introducing the water a part and consist of the driver ribs 38 of the drum. These border an inner one Volume from, the only connection with the interior of the drum being represented by the series of openings 39 is, in this example, three rows provided at the top and on the parts near the top are. These openings have two ■ functions: the first consists in filling the inner with water Guaranteed volume of the rib when starting the spin cycle will; the second. The task is to introduce the water into the laundry ring after removing the Spin speed.

The shape and arrangement of the water container and the element for introducing the water can have many modifications, of which FIGS. Ka, b, c, d, e, f only give an overview.

4a shows an annular space hO with a right-angled cross-section, which is arranged in the center of the drum and outside the same, the element for introducing the water, which consists of openings or gaps 41 which open out on the inner surface of the drum milk quiver. Such an embodiment

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is used for machines with front filling. It is also possible, as shown by dashed lines 42, to arrange this space on the edge of the drum quiver, the inlet openings for the water then preferably in a part 43 near the center of the Drum are provided.

Fig. 4b shows a water tank 44 on the inside of the drum against the connection of the Pages with the quiver angeor'diiet is. You can do several Water container distributed over the inside of the drum are to arrange. The openings 45 of the device for Introductions of water are directed towards the center of the drum. This schematic embodiment is in shown on the left-hand side of FIG. The second container 46, shown in phantom, is different Opportunity. FIGS. 4c and d show exemplary embodiments, in which the water tanks 47 and 48 are arranged like the tanks 42 and 44 in FIGS. 4a and 4b, The elements for introducing the water consist of Ramps 49 j which are provided with holes in the case 4c are arranged on the inner wall of the drum and in the case of FIG. 4d the ramps 50 are in arranged a certain distance from the inner wall of the drum.

The ring-shaped containers are after one Embodiment divided by partitions. These

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Partition walls are arranged, for example, corresponding to diametrical planes of the drum.

The elements for introducing the water can be connected to the water tanks, namely, either with a single end if there is only one container 47 or 48 on the edge of the quiver, or with two ends in the case of two containers 47 »51 and 48, 52. (the second container is dashed in the figure shown). In the case of a central container 4θ, as shown in Fig. 4a, the element for introducing the water is fed from the center.

These elements are preferably arranged in accordance with the descriptive text of the drum quiver.

4e shows, in the case of an arrangement of the water container inside against one side of the drum 53 and / or 54, inlet elements for the water in the form of driver ribs 55. The through openings for the water are provided along a chamber 5 & which is attached to the Tip of the rib is provided and which is connected to the water compartment. This embodiment is shown on the right-hand part of FIG. Fig. 4f is a schematic representation of the embodiment of Fig. 1, in which the wetting device from. Mitnehraerrippen 57 provided, which have a closed volume, its connection with the interior of the drum only through one or more rows of openings

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at the top is guaranteed.

FIG. 5 shows a section through a wetting device which is formed by a rib 58. According to the embodiment shown, the rib has a trapezoidal profile and has 3 rows of 8 holes: the rows 59 and 60 consist of holes of h mm and the row 61 of holes of 3 mm. The arrow shows the direction of rotation of the drum during spinning.

The holes in row 61 can have a different diameter than those in row 59. These measures are intended to make it easier to fill the rib during spinning.

The rib has a volume of about 700 cm ^{3 of} water.

It is easy to see that the element for introducing the water is easiest from a single row of openings could exist, which is provided on that side of the rib that is in the D. the direction of rotation of the drum during spinning is close to the tip. This series serves both for filling the rib when starting the spin cycle and for introducing the water into the laundry ring on the End of spin cycle. In order to increase the speed of the filling with the rib is on the other side of the rib a second row of openings intended. Attempts have also been made to

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To obtain flow resistances of the water between that lying in the direction of rotation during spinning Row and the opposite row.

According to an example, the openings have different diameters.

The row mot openings that are at the top of the The carrier rib enables the water to flow easily in the laundry ring when the water is gravity is exposed.

The drum must contain at least one wetting device, but preferably if the device Contains ramps for introducing the water or is formed by driver ribs or by a Part with ribs; to ensure a good balance, at least two are diametrically opposed to each other opposing devices attached, or in the case of drive ribs, generally three in the Number, distributed over an angle of 120 ° · »

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Claims (12)

Patent claims : (1 J Method for loosening laundry after the spin cycle in a washing machine, where the * spin cycle has distributed the laundry in the form of a ring around the circumference of the drum, whereby the introduction of a limited amount of water through this ring causes this ring to loosen and the Bringing laundry into the drum, characterized in that during the spin cycle the water is held in a wetting device arranged on the drum, of which at least one element for introducing the water into the washing ring is in the vicinity of the cylindrical surface of the drum, the introduction of the water into the ring being carried out under the influence of gravity after the spinning. 2. Procedure for loosening the laundry after Spin cycle in a washing machine according to claim 1, characterized in that the filling of the wetting devices is carried out when the spin cycle is started with the vat full. 3 wetting device for carrying out the process according to one of claims 1 and 2, characterized in that characterized that dious device consists of 'a water tank consists, which is connected to an element for introducing the water into the laundry ring, wherein 50981 1/0883 O / / Q Q Π Π FPHN 7182 24433UU 8/30/74 the container and the introducer from the drum be worn. 4. A wetting apparatus according to claim 3 »characterized in that the water container ringför _T is rnig and is placed against the surface of the drum and is connected to at least one element for introducing the water into the laundry ring, which element consists of a, corresponding to a Beschreibenden'der Drum arranged ramp consists. 5. Wetting device according to one of claims 3 or 4, characterized in that the water container ring-shaped and-against the cylindrical surface the drum is arranged, wherein the element for introducing the water into the laundry ring from at least there is an opening provided in that part of the element which is closest to the drum axis lies. 6. Wetting device according to one of claims 3 to 5, 'characterized in that the water container is arranged in a ring shape and against the cylindrical surface of the drum, wherein the element for introducing the water into the laundry ring is formed by at least one driver rib of the drum, which is at least has an opening in the part near the tip. 7 · 'wetting device according to one of claims 3 to 6, characterized in that the ring-conveying 50981 1/0883 FPHN 7182 mige water tank is divided by partitions. 8. Wetting device according to claim. 3> characterized in that the device consists of at least two elongated containers corresponding to the descriptor of the drum are arranged, wherein the element for introducing the water into the laundry ring through at least one opening in at least one Part of the wall of said container is provided near the axis of the drum. ■ 9. Wetting device according to claim 8, characterized in that said water container through that part of the driving rib of the drum is formed which is in the vicinity of the cylindrical surface of the drum and the element for introducing the water is formed through at least one opening which is provided in at least a part near the top of the rib. 10. Wetting device according to claim 9 »thereby marked that the elements' for introducing the water, which are provided in at least a part near the tip of the driver rib, from at least consist of a series of openings that are on the side of the rib in the direction of rotation of the drum during spinning and near the tip of the same sindo 11.. Wetting device according to claim 10, there- 5098 11/0883 ^FPHN 7182 8/30/74 characterized in that said elements have a second row of openings for introducing the water have, which lie on the side of the driver rib which is opposite to the direction of rotation of the drum during spinning . 12. Wetting device according to claim 11, characterized in that said openings of the second row have a greater flow resistance than the openings on the side in the direction of rotation lying while spinning. 13 · Wetting device according to one of the claims 10, 11 and 12, characterized in that a third row of openings on the tip of the driver rib is provided. 50981 1/0883 Blank page