FR2791709A1 - DRYER WITH AIR DRY SYSTEM - Google Patents

Abstract

The invention relates to the laundry drying system using closed-circuit ventilation. Referring to the drawing of the sectional dryer (10), the duct (13) is connected to the ducts (6) and to the filter opening (5). From the electric refrigeration compressor (1), the generation of dry air is activated by the evaporator (2) which dehydrates the moist air drawn from the drum (9) through the filter opening (5). The condensed water flows through the cavity (12) into the tank (4) provided at the base with a nozzle (11) for external evacuation. The condenser (3) heats the dry air to be ejected into the drum (9) through the orifices (8). The drying of the laundry in the drum (9) is done by a stream of dry and hot air with internal circuit, activated by a turbine (7) located in the duct (13) between the evaporator (2) and the condenser ( 3).

Description

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  The present invention relates to a tumble dryer

dry air system.

  The drying of the linen is traditionally carried out in tumble dryers with electrical resistance and ventilation with external rejection of water vapor, or with condensation with internal water, or with external condensation. In any case, the air intake from the environment can be charged with any substance that can

alter the laundry.

  Any wet laundry coming out of a wash is loaded with a volume of water which must be removed by

  known drying relatively restrictive for the user.

  The dryer system according to the invention overcomes this drawback. In addition to the known elements of the dryer, it in fact comprises, according to a first characteristic of a closed ventilation circuit, the generation of air of which is activated by a refrigeration unit

  whose evaporator dehydrates the humid air leaving the drum.

  The condenser heats the dry air to be ejected into the drum. The laundry is dried by a stream of hot, dry air with an internal circuit activated by a turbine. A

  tank collects water from condensation.

  According to particular embodiments: - The dry and hot air generator circuit can be part of the structure of the dryer machine or else of an independent and removable type to be mounted on any

drying the known laundry.

  - An electric refrigeration compressor which serves to maintain the evaporator at a low temperature to dehydrate the air in the ventilation circuit and serves to maintain a high temperature at the level of the condenser for heating

air.

  - A variable speed electric turbine for

  air circulation in closed circuit.

  - A tank that collects the condensed water at the outlet of the cavity and a connection connector for evacuation to the outside. - The ventilation ducts in which they are placed

  the evaporator, the condenser and the turbine.

  - The laundry drying system in the drum by a stream of dry hot air connected to the ducts in circuit

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  closed. The appended drawing illustrates the invention: FIG. 1 represents the dryer in section, the system of

  the invention integrated or to be integrated into the drying equipment

  known linen. With reference to this drawing, in the sectional dryer (10) the system includes an electric refrigeration compressor (1) which is connected to the evaporator (2) and to the condenser (3). The evaporator (2) and condenser (3) are placed in the duct (13) whose ventilation is activated by the electric turbine (7) at variable speed. The hot and humid air is drawn from the drum (9) through the filter opening (5) to be dehydrated through the evaporator (2), the condensed water of which is collected by the tank (4) with watertight seal located in below the duct (13) whose base has a cavity (12) having a sufficient slope which facilitates the flow of water. The dry and cold air is propelled by the turbine (7) to be heated by the condenser (3) in the conduit (6) to be ejected into the drum (9) through the orifices (8) of the drum (9). The tank (4) is provided with a nozzle (11) in the case of connection for the evacuation of the water outside towards the connection.

used waters.

  The contents of the drum (9) are thus ventilated by a stream of dry hot air in a closed circuit in the direction

  filter opening (5) towards the openings (8).

  The power of the electric refrigeration compressor (1) will depend on the capacities of the evaporator (2) and the condenser (3) supporting the capacity and volume of the drum (9) and the speed of the regulated air circulation.

by the turbine (7).

  In the embodiment according to FIG. 1, the closed ventilation circuit system is one of the variants of the positions and forms: of the compressor (1) of the evaporator (2) of the condenser (3) of the turbine (7) and of

conduit (6).

  According to a variant not illustrated, the condenser heating the air can be placed at the inlet located at the rear of the drum. The conduits can be in

  flexible connection to the inlet and outlet of the drum.

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  The entire ventilation circuit can be cylindrical with a variable diameter. The evaporator and the condenser can be in known models or in copper tube in solenoid form. The whole system will have variable dimensions adapted to the capacity of the machine and the desired drying volume. By way of nonlimiting example, the power of the compressor will be 0.5 k W and the turbine will be 0.2 k W. The dry air system according to the invention is intended

  all household and industrial models for drying clothes.

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Claims (8)

  1) Dry and hot air generator circuit for dryer   linen with turbine, evaporator and condenser characterized in that it comprises a ventilation circuit in which a refrigeration compressor (1) is provided which serves to maintain the evaporator (2) at a low temperature to dehydrate the air in the said ventilation circuit and is used to maintain a high temperature at the condenser (3) for the air heating.   2) Circuit according to claim 1 characterized in that the evaporator (2) and the condenser (3) are placed in a duct (13) whose ventilation is activated by the electric turbine (7) variable speed for circulation air in a closed circuit.   3) Circuit according to claim 1 or 2 characterized in that the evaporator (2), the condenser (3) and the turbine (7)   are placed in the ventilation duct.   4) Circuit according to claims 1 to 3 characterized   by the presence of a reservoir (4) which is intended to collect the condensed water at the outlet of the cavity (12) located below the duct (13) and in that the reservoir comprises a discharge connection nozzle (11) outwards. ) Circuit according to claim 4 characterized by the conduits (13) and (6) connected to the drum of the dryer in closed circuit.   6) Circuit according to all of claims 1 to 5   characterized in that it is part of the frame of a dryer machine.   7) Circuit according to all of claims 1 to 5   characterized in that it is of the independent and removable type   to be mounted on any laundry drying machine.   8) Circuit according to all of claims 1 to 6   characterized in that the condenser (3) heating the air is   placed at the entrance located at the rear of the drum (9).   9) Circuit according to claim 5 characterized in that the conduits (13 and 6) are in flexible connection to   entering and leaving the drum.   ) Circuit according to any one of claims 1   to 9 characterized in that the entire ventilation circuit   (13 and 6) is cylindrical with variable diameter.