DD150771A5 - METHOD AND DEVICE FOR DRYING TEXTILE PRODUCTS - Google Patents

Abstract

The invention relates to a method for drying fabrics after carried out washing process and a device, in particular a washing machine, for carrying out this method. The aim of the invention is to increase the efficiency and effectiveness and to reduce the expense of the device. The object, which is solved by the invention, is to run the drying process in the high-speed drum directly after completion of the washing process. The feature of the invention is that the hot air in the radial flow direction from the center of the drum to the jacket surface flows through the layer of drying fabrics which are piled up on its inner perforated jacket surface due to the centrifugal force of the rotating drum. The invention is used in the manufacture of washing machines for textile products.

Description

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Berlin, 20. 6. 80 AP D 06 F / 220 561 GZ 57 330 26

Process and device for drying textile products

Field of application of the invention

The invention relates to a method for drying textile products after washing process and a device, in particular a washing machine, for the application of this method.

Characteristic of the known technical solutions

Vashing machines are known in which the spinning and drying process takes place in the drum.

This is described, for example, in French Pat. No. 2,333,886 entitled "Composite Device for Washing and Drying in the Drum".

The subject of this invention is a device for washing and drying with closed loop air circulation. The moist air is passed through the inner drum and then to the condenser, which is fed with cooling water from the outside. Then the dried air meets the preheating on a flap. The air movement creates a suction and pressure fan. The air is introduced into the cycle via an insert for drying through the end face of the laundry drum in such a way that it is subjected to an intensive swirling.

According to another solution, a nozzle is mounted on the front surface of the drum, which is fan-shaped into the interior of the drum.

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like the air blows.

This solution makes it possible to distribute the air over the entire cross section of the drum without blind spot.

In the description of this invention yet another solution is presented with the limitation of an overflow pipe whose outlet is equipped with a valve that automatically closes through an outlet of the suction and pressure fan.

FR-PS 2,332,360 "Machine for Washing and Drying Laundry" describes an invention whereby, during drying, a low speed motor drives a drum of laundry. The temperature of the drying air is increased by a heating element mounted under the drum and by the thermostat mounted on the top of the tank.

If an engine or a. Thermostat is damaged or lack of water occurs, the heating element is automatically switched off. This protects the insert against destruction «The circulating air is controlled by the thermostat in the appropriate sequence through the heating element and part of the cooling wall. In order to increase the sensitivity of the device and possibly lower the temperature of a heating element, the thermostat has been provided with warm air access directly from the heating element and preferred relative to the inlet for air sucked in by the drum rotation and along part of the drum Cooling container wall is passed.

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According to DE-PS 1 808 534 with the title: "drum washing machine, which also serves for spinning and drying" is the drum unit of the washing machine, which consists of the drum, the drum container for liquor and from the drive motor, with elastic center with the Machine body connected.

The front of the body is equipped with the pipe connections for the supply and discharge of the drying or dried air for condensation.

The drying air, which is saturated with water vapor, is guided along cooling surfaces, with water flowing through lines. An additional cooling effect is achieved by using a spraying device for cooling water.

Z iel the invention

The object of the invention is to provide a method and an apparatus for drying fabrics of high performance and effectiveness and reducing the expense of the apparatus,

Explanation of the essence of the invention

The technical problem to be solved by the invention is to provide the method and apparatus for carrying out this method of drying textile products after a hot air washing operation which is conducted inside the drum of a washing machine

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to make sure that the drying process in the high-speed drum runs immediately after completion of the washing process.

The technical problem is solved by a method of the following feature:

The hot air flows in the radial direction of flow from the center of the drum to the lateral surface through the layer of drying fabrics, which are piled up due to the centrifugal force of the rotating drum on its inner, perforated lateral surface.

A further feature of the method according to the invention is that the drying takes place by simultaneous ejection of water and pressing of the hot air through the layer of moist textile products in the radial direction from the middle of the drum to the perforated jacket.

The feature of the device according to the invention for carrying out the method described is the fact that the high-speed drum of the washing machine is equipped with blades.

Another feature of the device is that the inlet opening for the supply of cold air to the heating unit is arranged in the rear wall of the chamber.

As a further feature of the invention, the device is designed such that the space between the drum and the chamber is divided into the preheating zone serving for air supply and preheating and the diffusing zone for exhausting the moist air after the drying process has been carried out.

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The suction, the promotion and the pressing of the air through the textile products during the drying process by means of the fast rotating drum of the washing machine.

Achieving high efficiency in heat utilization is a favorable result of using this method of drying according to the invention method because the hot air, after being forced through the layer of fabrics, is saturated with moisture to near total saturation.

Ausfüh approximately example

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawing show;

Fig. 1: a drum of the washing machine in longitudinal section; Fig. 2j a drum of the washing machine in cross section.

As shown in Figs. 1 and 2, the drum 1 of the washing machine has a shell surface and a front wall of perforated plate and a rear wall of solid sheet on which the blades 3 have been mounted.

In the rear wall of the chamber 4 of the washing machine there is an inlet opening 5, are sucked by the air during the T _r ocl <-drying process as well as water and detergent during the washing process, "

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Era lower part of the chamber 4 is a heating unit 6 for preheating the wash liquor during the washing process and the air preheating during drying installed.

The diaphragm 7 forms an outlet channel 8 for the moist air.

At the bottom of the chamber 4, a nozzle 9 for the discharge of moist air, a channel OK with a water discharge valve 11 and a passageway 12 are arranged.

The drying process of the moist textile products 13 takes place by centrifuging the water and simultaneously pressing through hot air of the heating unit 6.

During the drying process, the temperature in the chamber 4 is systematically increased, thereby increasing the effect of mechanical moisture secretion.

The ejected water flows to the channel 10 and on through the drainage valve 11 behind the washing machine.

The rotating drum 1 with the blades 3 effects air intake from outside through the inlet opening 5. The cold air cools the rear wall 14 with the bearing body 15, thereby improving the operating conditions of the bearings installed in the bearing body 15,

On the way forward, the cold air is conducted by means of the tail units 16 to the preheating zone 17 with the heating units 6. In this preheating zone 17, the air is passed through the heating

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aggregates 6 and additionally preheated by hot walls of the channel 8 through which the humidified air is discharged after passing through the drying fabrics 13.

The hot air from the preheating zone 17 is directed to the space 18 and further through the openings 19 in the end wall of the drum 1 and through a slot 20 at the periphery of the insert window 21 to the drum center 1.

The required pressure of the drying air, which is absolutely necessary for the circulation of the flow resistances through the washing machine and the layer of the drying. Textile products 13, is ensured by the rapidly rotating drum 1 with the blades 3 and with the brushes 2.

The air pressure is additionally increased by the rotating together with drum 1 layer of wet fabric 13.

The hot air becomes the carrier of the heat, which on its way results in the evaporation of moisture from the drying fabrics 13 and their saturation with moisture until they are almost completely saturated with water vapor.

The moist air is forced through openings 22 in the diffuser zone 23 and then discharged after partial cooling in the outlet channel 8 through a nozzle 9 and the channel from the washing machine.

The preheating zone 17 is separated from the diffuser zone 23 by a

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Aperture 7, a baffle 25 and sealing elements 26; 27 separated.

The drum 1 of the washing machine for drying according to the invention has an approximately 2.5 times lower volume for the same amount of moist fabrics 13 than in conventional washing machines. This allows the construction of washing machines with lower mass, which significantly reduces the cost.

Claims (4)

20. 6. 80 AP D 06 F / 220 561 GZ 57 330 26 220561 Claim for invention Anspruch [en] A process for drying fabric after hot air VVasching, which is conducted inside the drum of a washing machine, characterized in that the hot air through the layer of drying fabrics (13) due to the centrifugal force of the rotating drum (1 ) are stacked on their inner perforated lateral surface, flows in the radial flow direction from the center of the drum (1) to the lateral surface. 2. The method according to item 1, characterized in that the drying process takes place simultaneously by Wasserabschleuderung and pressing the hot air through the drying fabric (13). 3 · Apparatus for carrying out the method according to item 1, characterized in that the washing machine with fast-running drum (1) is equipped with blades (3). 4 # Device according to point 3, characterized in that the inlet opening (5), which supplies the cold air to the heating unit (6), in the rear wall (14) of the chamber (4) is arranged. 5, device according to item 3 or 4, characterized in that the space between drum (1) and chamber (4) in the air supply and preheating serving preheating zone (17) and in the diffuser zone (23) for discharging the 20. 6. 80 AP D 06 F / 220 561 GZ 57 330 26 - 10 - moist air is divided after the drying process has been carried out - For this 2 pages drawing -