FR2605658A1 - Internal ventilation device for a WC - Google Patents

Abstract

Ventilation device, which is not costly and without danger, designed on the principle of suction. The invention relates to a device making it possible to evacuate the tainted and foul-smelling air in toilets. It consists of a pipe 7 attached at 9 to the overflow pipe 8. Switching on the fan 14 leads to the closure of the pipe 8 and the evacuation of the smells to the outside. When the fan 14 is switched off, the pipe 8 resumes its overflow function. The device according to the invention is more particularly adapted to installations used by a large number of people.

Description

WC INTERNAL VENTILATION DEVICE
The present invention relates to an internal toilet ventilation device for removing stale and smelly air from toilets.

 There are, in fact, often problems in the toilet to remove stale or smelly air. It is true that the toilets must enter, and are generally equipped with an aerator for the introduction of fresh air, but this aerator is often insufficient to remove to the desired extent, stale and smelly air.

 In Swiss Patent No. 380,670, in German Patents No. 873,828 and No. 1,658,269 and Swedish Patent No. 2,456,815 are described various means for removing stale air from WC.

 However, the aforementioned technical means are complicated or of unreliable operation. The present invention aims to provide a ventilation device for quickly and efficiently removing stale air from toilets, which is very simple and reliable and suitable for use in WCs having an adjacent flush tank. at the toilet seat.

 For this purpose, the invention relates to a ventilation device for a toilet comprising a toilet seat, a toilet bowl, a flush tank.

 A circuit is formed between the toilet bowl and the exterior passing through the flush tank. A fan is mounted on the overflow circuit.

 The characteristics and advantages of the invention will emerge from the description which follows, given by way of nonlimiting example and with reference to the accompanying drawings.

 Figure 1 is a sectional view of a toilet according to an embodiment of the invention.

 The WC designed in a conventional manner, represented in section in FIG. 1 comprises a WC seat with a base 1 which supports a bowl 2 provided with a discharge pipe 3 bent upward to form a siphon. On the upper rear part of the WC seat, there is a flush tank 4 used to store the water intended to rinse the bowl 2, a manual control 12 allows the water to flow from the flush tank through a conduit connected to bowl 2 in order to evacuate the excrement.

 In the embodiment shown, the upper wall has a cover 6 which closes the tank of the flush tank, and is removable to allow access to the interior of the flush tank.

 A valve (not shown) controlled by a float is conventionally used to control the arrival in the tank of cleaning water, coming from a water supply pipe, (not shown) and to maintain the upper level. of water contained in the flushing tank, below the upper edge of the overflow pipe fitted with a closing ball.

According to the invention, an air evacuation circuit is formed between the bowl 2 and the overflow pipe 8
through the outer duct 7.

 The communication between the bowl 2 and the conduit 7 is established by the overflow 8 on which is made at the bottom, a tapping 9. The overflow pipe is closed during depression by a ball 10, placed on the part upper of the duct 8, which ensures the seal created by the starting of the fan 14.

 When the ventilation stops, the duct 8 and the ball 10 resume their overflow functions.

 The duct 7 is equipped with safety devices against laminar upwelling, change of section It is used according to the same principle of the distillation columns, baffles represented at 13. The depression is produced by a ventilator 14 of the sealed axial type placed at 2 meters above the bowl. The fan 14 can optionally be equipped with an activated carbon filter. The odors are then evacuated to the outside.

 The start-up of the fan 14 is the same as that used for lighting the toilets, a particularly advantageous operation of the fan is obtained since the lighting is generally on, and kept on while the toilets are occupied.

 The starting of the fan can be created by a pressure exerted on the seat of the WC.

 The absence of electric current in the tank 4 eliminates any danger, unlike similar projects.

Claims (4)

CLAIMS Internal ventilation device of a lavatory for the evacuation of smelly air from a toilet which includes a flush tank 4 for storing cleaning water, a toilet bowl 2 provided with a duct 7 , an overflow conduit 8 communicating with the toilet bowl 2. Introduction  1) The device; st characterized by a valve 10 mounted on the overflow pipe 8, in order to close it when the fan is started.  2) Device according to claim 1 characterized by a method comprising a change of section II and baffles 13 which prevents the upwelling during the operation of the button 12 actuating the flush.  3) Device according to claim 2 comprising a fan 14 of the sealed axial type optionally equipped with an activated carbon filter.  4) Device according to claim 3 characterized by the pressure switch on the toilet seat.  Air chamber connected to a flexible hose transmitting the pressure exerted on the bowl to a switch outside the wet zone.