DE1935892A1 - Warm air circulation laundry dryer for household use - Google Patents

Description

PATENT ADVOCATE 1935894

DIPL-ING. K. BLANK

8 Munich 8 1 H IUl I « _ft

Trog.ritra * 4 / V '°' ^JU U 1969

"Warm air ^{circulation Was ehe drying system for household use 11} DELLA ROSSA & C. based in Feletto Umberto - Udine.

The Wasehetrockenanlage for Haushaitsgebrauch _f which forms the subject of the present invention, reaches the end, by hot air circulation, the laundry in a very short time, strap ready to dry.

The limited space required by the apparatus allows it to be accommodated in any room and the adjustable wheels with which it is provided allow it to be easily moved. In addition, it is extremely easy to use and for every housewife possible.

This device differs from the already known ones in that that the washing is dried by circulating hot air by means of a thermal fan used on the upper side of a vertical pipe is reached, which from now on is the ventilation duct called, and the one on one of the shorter sides of the parallelepiped Housing, is arranged, which forms the drying system itself. This arrangement allows the air from suction from the lower side of the chamber located inside the housing and into the chamber itself by a third fan heated, and with a slight pressure, through on the upper part of the partition wall, which is the ventilation duct from the drying chamber separates, attached louvers, to divert back.

A second characteristic is given by the fact that the air, which is blown into the drying system as already described, is in is appropriately deflected by a pair of deflectors attached to the housing cover, thus inside the drying chamber forming a warm air recirculation, the air after flushing the

009808/1168

Laundry comes out of the suction nozzle, which is attached to the bottom of the wall provided with the slots for the air pulsation.

Another characteristic is that after the The drying system housing is provided with a series of holes on one of its sides (usually on the back), . some of the air blown into the drying chamber emerges from these holes and is replaced by fresh, therefore dry air which the thermal fan extracts from the room and which mixed with the recirculation air in the intake line, thus reducing the degree of humidity.

As can be seen, the advantage is achieved by this arrangement, P due to the air recirculation in the drying chamber, one sufficient to reach high temperature while the air diverter from the Existing holes on the rear wall of the housing emerge through fresh ones is replaced and therefore drier air, which is sucked out of the room with advantage for drying.

These and other properties are identified with the help of the enclosed Drawing appear clearer, the figures of which are an example Represent execution of the subject of the invention.

- fig. 1 is a front view of the drying apparatus

- fig. 2 is a top view of the same

"- fig. 3 the longitudinal section of the apparatus according to level II - II

- fig. 4 the horizontal section, according to level I - I

- fig 5 the cross section near the vertical plane III - III

With reference to, the figures can be seen that the dry in question device consists of a housing 1 of paralIelepideder form, built on four swiveling wheels 2 and with an upper one The inside tiltable to 4 "and 4" hinged lid 3 is provided. The vertical front of the housing 1 is for formation an intermediate space Ic double-walled and suitable for insulation

009808/1168

■ - "■ * - ■■ ο -. ■

also the cabling for those connected to the switch buttons 17 electrical equipment included.

In correspondence with the front edge, the lid 3 has a Bevel 5 on ,, which forms a grip point for the opening as a replacement for a latch.

The housing 1 whose inner chamber forms the drying chamber la, appears elongated at one end thus forming a second smaller chamber 6, which the housing in its entire length and Height in that this chamber is separated from the drying chamber 1a by a solid sheet metal partition 1b.

In the chamber 6, the ventilation duct 7 is housed, which forms a body for itself, which on the partition 1b with Screws or other removable fasteners. The ventilation duct 7 with a vertical or almost vertical course is open on the lower side and has on its A turbo fan 7a installed on the upper side, with an electrical resistor 7b, in front of the outlet opening of the fan attached, for heating the air that is blown into the drying chamber la from the housing through the slots 8.

The air is then appropriately passed through the two deflectors 9 and Io are deflected into the interior of the drying chamber, which are made of inclined plates attached to the inside of the cover 3 exist, and through suction from the perforated opening 11, which is attached to the lower part of the partition Ib, which separates the drying chamber 1a of the housing from the chamber 6, which, as I said, contains the ventilation duct.

The circulation is obtained by operating the turbo fan of warm air in the drying chamber, which the rods arranged lengthways on the upper part of the chamber itself worn laundry, rinsed.

The housing 1 is on the upper part "of its rear wall with a row

0098 08/1168

provided by holes 13 through which part of the warm moist Air is excreted, which is replaced by fresh air taken from the room by the fan through the floor of the Chamber 6 is sucked off and which mixes in the ventilation duct with the recirculating air coming from the drying chamber.

The housing 1 is also provided with a bottom 14, with surfaces sloping towards the center where there is a drainage hole for the dripping water, which is located in an underlying one removable shell 16 is collected.

The chamber 6, which contains the ventilation duct with a built-in thermal fan, is on the outside with a removable sheet metal wall 6a, for the control of the equipment, closed from the outside.

The system is completed by a number of switching and signaling buttons 17, including a pressure switch with red signal light, for the operation of the fan by switching on the resistors and a second pressure switch with green light signal for the use of the second resistor. The two resistors usually have one each 1ooo W of power.

Claims (1)

PATENT CLAIMS - Laundry drying system with hot air circulation for household use, characterized in that drying by circulation in a closed circuit in the drying chamber (la) is achieved by a thermal fan (7a) attached to the Outside of the chamber (6) itself is arranged, and said chamber (1) also with a number of holes (13) or Slots for the removal of a certain amount of humid air, which is replaced by fresh and therefore drier air is provided, which the thermal fan (7a) sucks out of the room and which is the one of the recirculation Mixed to reduce the degree of moisture. 009808/1168 2 - laundry drying system claim !, characterized, that it has a means for air conveyance and heating, for example consisting of one on the upper part of a vertically or almost vertically running pipe consists of a built-in thermal fan, whereby the ventilation duct, is built into a special chamber next to the drying chamber, through upper flow slots and lower suction 11 tv · - -ι \ _ nozzles, with the drying chamber is in connection from the warm air recirculation in the drying chamber, between the upper air slots and the lower suction nozzles. 3 - drying apparatus according to claim 1 and 2, characterized in that that the air blown into the drying chamber through two the lid of the dryer, on the inside of the same, attached inclined deflector (9,1o), is deflected downwards. 4 - drying apparatus according to claims 1 to 3, characterized in that that the ventilation duct according to claim 2, with thermal fan, forms a single and independent unit that with vertical or an almost vertical arrangement inside the housing of the drying apparatus within a special chamber, which is separated from the drying chamber by a fixed partition (16). 5 - drying apparatus according to claims 1 to 4, characterized in that that the fixed partition corresponding to the preceding claim on which the ventilation duct is attached at the top Has slots for the introduction of warm air from the ventilation duct into the drying chamber and a nozzle at the bottom for the recovery (Suction) of the air into the ventilation duct. 6 - The drying apparatus according to claims 1 to 5, characterized in that a casing is provided on one or more of its walls (usually the rear one) with a series of holes or slits for the removal of moist air. 009808/1168 7 - drying apparatus ^ according to claims 1 to 6 characterized in that that the ventilation duct according to claim 2, has an additional opening for the intake of fresh room air. 8 - drying apparatus according to claims 1 to 7, characterized by a parallelepiped-shaped housing, mounted on swiveling wheels, the inner drying chamber of which has a floor has inclined surfaces (14) which converge towards a drainage hole (15) and which can be removed from an underlying one Catch tray (16) leads. 9 - drying apparatus according to claims 1 to 8, characterized in that that inside the drying chamber and on the top of the same a number of rod-like supports or other means is intended for hanging laundry. 10 - drying apparatus according to claims 1 to 9, characterized in that that its housing as claimed in claim 8 with rearward tiltable lid and is provided with an angular bevel on the front edge so that the edge of the lid serves as a grip point serves. 0 0 9808/1168