FR2872828A1 - Material e.g. linen, drying device for use in dwelling, has ventilator forcing ambient air to pass through linen for lowering water vapor pressure contained in linen so as to dry it by balance of partial water vapor pressure - Google Patents

Abstract

The device has a carrier structure (11) on which another structure containing a ventilator (16) is positioned for drying a linen (1). The ventilator forces an ambient air to pass through the linen for lowering water vapor pressure contained in the linen so as to dry it by balance of partial water vapor pressure, when a user connects the ventilator on an electric power grid.

Description

2872828 1

  The present invention relates to a device for extending and drying laundry or other hygroscopic wet material, and operates by moving the ambient air by partial pressure difference of water vapor.

  Figure.1 shows the drying of the laundry (1) traditionally provided by a rope, wire or any other material (2), stretched between two clashes (3), on which the linen is suspended with the assistance of pins (4). The latter will dry more or less quickly in contact with the ambient air depending on weather conditions. This device can only be installed outside a home, given its size. If it rains, it is necessary to quickly return the suspended linen, without forgetting the excrement of birds and other inconveniences, being able to soil the linen, and even to make it unusable because burned by the droppings.

  Figure.2, describes the drying of the laundry (1) provided by mobile driers (5). With this mobility, its small size and its foldable system, it is easily transportable and can be installed both inside a house and outside. It is also dependent on weather conditions. If these conditions are not favorable to the good drying, the laundry takes too long to dry and takes a sometimes unpleasant smell that may require a new passage in the machine.

  Figure.3 shows the drying of the linen provided by a tumbling tumble dryer blowing and heating (6), requiring a permanent space in a house, a heavy installation, a power connection of power adapted to the model (7) , must imperatively contain a ground for the safety of electrical risks. It must be equipped with a moisture evacuation with a sheath on the outside (8) for the machines without condenser, or a permanent surveillance to empty the tanks of water of recovery concerning the machines equipped with a condenser ( 9), without forgetting the cleaning of the filter (10) and its consumption of electrical energy. The wear of the mechanical parts and the breakdowns generate a high operating cost as well as premature linen wear.

  The device according to the invention Fig.4, allows drying the laundry by taking all the advantages described above by providing other advantages. Folded on itself the supporting structure (11) and the fan structure (12) can be easily transported by means of 4 wheels (15) and stored separately in a reduced, closets, storage. The good old clothesline is ubiquitous (4) but replaced by metal rods or small following model strings (13), concentrated on several mobile half-stages (14) representing a total length of spread of about 40 linear meters next model, being able according to the length of the spreads to be positioned horizontally or remained vertical inside the structure.

  2872828 -2- The dryer stays mobile whether it is folded in the storage position, or unfolded in the service position. Through four wheels (15). and by its slender shape on the outside at its base (16), the rollers (15) are positioned on the outside of the structure thus ensuring its exemplary stability.

  The fan (16) will force the ambient air contained in the room (17) to pass between the laundry (1), and this, on all the stages of the dryer, thus avoiding that the moist air released by the linen stagnates between the latter and generates bad smells.

  The room air thus sucked by the fan generally has a relative humidity (RH) of about 70%, and a temperature of about 20 C. The laundry coming out of the washing machine at a 100% RH and will take the temperature of the room a few minutes after being removed from the said washing machine, ie 20 C.

  Diagram 1 in Fig. 5 shows the water weights generally contained in the ambient air of a healthy room (24) and in the laundry leaving a washing machine (26). Their temperature is of the order of 20 C (21), with a relative humidity of 70% RH for room air (23) and 100% RH for that contained in the laundry (23). These measurements correspond to a water weight of 10.2 g (24) at a partial pressure of water vapor of 1.62 Kpa (25) for the ambient air of the room, and 15 g (6) for the weight of water contained in the laundry at a partial steam pressure of 2.38 KPa for the laundry (27) Pascal is the unit of measurement of pressure stress.

  We will measure the latter in Kpa given the low pressure.

  1 KPa = 760 mm Hg (millimeter of mercury) or 1013 millibars Atmospheric pressure taken at 0 C at sea level and at middle latitudes.

  The difference of these partial pressures of water vapor between the wet cloth and the air of the room is: 2.38 (5) - 1.62 (7) = 0.76 KPa.

  With the highest pressure (27) going to the lowest pressure (25), the laundry continuously releases the moisture contained therein, by migration of water vapor (28), until in equilibrium with the ambient air, the pressures being equal, the migration ceases of itself. Thus, the drying of the laundry is finished. Once ironed and stored, this linen will be in perfect harmony with its environment.

  The latter, dried cold, can not take bad odors, given the mixing of air constantly blown between it, it undergoes no degradation due to a rotary mechanical movement or excessive heat.

  2872828 -3- Thus, the dryer can accommodate any textile, fragile material, or any other material.

  The electrical power of a commercial dryer can vary between 2400 W and 3000 W depending on the model.

  The electric power of our blower equipping our dynamic dryer can vary between 20 W and 50 W according to the models, a consumption 120 times lower for the smallest model and 60 times lower for the largest model of household dryer relative in the commercial dryer.

  Our fan Fig 4 (16) can be equipped model of a variable speed controller (18) controlled by a hygrostat measuring the relative humidity (RH) of the air under the supporting structure, thus stopping the power supply of the fan , when the air coming out of the dryer is in equilibrium with HR of the ambient air. It can also be equipped with a timer system according to model.

  Economical, eco-friendly due to its negligible energy consumption practical because foldable, stable by its design with remote wheels, it does not oxidize, does not rust, because of the materials used (stainless steel - aluminum plastic - synthetic resin - treated wood ) next Model.

  The dryer can be easily transported from one room to another, because of its reduced space requirement <600 m / m for its base and <2000 m / m height depending on model, allows the passage of doors of a dwelling without to be connected.

  On the practical side, our dryer can accommodate boots, shoes, slippers, bags, suitcases, damaged books, wet magazines, cardboard boxes, everything can be safely dried: folders, binders, rugs and other textures.

  On the culinary side, our dryer can also dry the picking of mushrooms, aromatic or medicinal herbs, dry condiments, specialties such as for example a safe and safe crisp for both children and adults. Make your imagination work and dry: modeling clay, salt dough for the little ones, homemade pasta, etc.

  The present invention is in the sense of protecting our planet, it does not pollute, makes no noise, and consumes electrical energy in a negligible manner.

Claims (4)

-4-CLAIMS   1) Device for drying laundry and various materials (9) having a supporting structure (11) on which is positioned a second structure containing a fan (16) to dry the laundry (1) or various materials, and thereby forcing ambient air (17) to be passed between the laundry or any other material (9). 5 2) Device according to claim 1 characterized by a supporting structure (II) steel tube, stainless steel, synthetic resin according to model provided with wheels (15) for the displacement and movable support for extending the laundry (1) or any other material .   3) Device according to claim 1 or 2 characterized in that the fan (16) is equipped with a speed controller (18) controlled by a hygrostat measuring the humidity (RH) of the air under the supporting structure (11). ) and stopping the fan when the air leaving the dryer is in equilibrium with the relative humidity of the ambient air.   4) Device according to any one of claims 1 to 3 characterized in that it comprises a timer measuring the operating time of the fan (16).