The invention is related to the system of primary ventilation of flush bowl that is ventilated through its own flush piping.

Existing systems of ventilation of social facilities, toilets, are handled with room ventilation through ventilation fans that are built into air conditioning distribution, or with self-venting system through venting grilles placed in the doors respectively walls of air conditioning piping. By this system is vented whole room, whereby it comes to smell pollution of given rooms, causing discomfort to the users, until it comes to the airing itself, what represents in many cases longer time period.

Above mentioned disadvantages are removed by solution according to this invention, whose nature consists in that the system's working principle is direct venting of flush bowl through flush piping, on which is created deflection for the connection of piping with ventilation fan for exhaustion of the area of flush bowl. In such way of ventilation comes to smell pollution of the toilet's space to the minimum extent. Technical problem is solved by three alternative solutions. The first alternative solution will be used in case that the air conditioning distribution is not constructed and there is no need to vent large-volume area, exhausted air is drained to the existing sewage conduit through condensation trap or liquid anti-odor closure.

The second alternative solution has the drainage of exhausted air into existing distribution piping of air conditioning.

The third alternative solution solves known combined flush bowl, where is between reservoir with flush water and opening of flush water into flush bowl inserted adaptor with deflection for connection with exhaust piping with ventilation fan that is connected to sewage conduit or into air conditioning piping distribution. Mentioned adaptor can be a part of flush water reservoir.

The invention is further explained by pictures.

• Figure 1 - diagram of venting of the area of flush bowl into existing sewage conduit
• Figure 2 - diagram of venting of the area of flush bowl into existing air conditioning piping distribution
• Figure 3 - diagram of venting of the combi flush bowl into existing air conditioning piping distribution or into existing sewage conduit

Device according to Figure 1 works in such way that by loading of flush bowl 1 by person will electric pressure sensor 2 or motion sensor 2 send an impulse to the power switch 3, that will start the action of fan 4 and subsequently will come to the exhaustion of smell from the area of flush bowl 1 through flush piping 5 with deflection 7 connected to the exhaust piping 6 for conduction of smell through liquid anti-odor closure 9 into sewage conduit 10. To the termination of exhaustion of the area of flush bowl 1 will come following unloading of electric pressure sensor by person 2, alternatively of motion sensor 2, that will block the power switch 3 and this will stop the action of fan 4. By release of water from flush water reservoir A into flush bowl 1 will come to refilling of liquid from water inlet through second deflection 8, whereby is excessive water taken away from anti-odor closure 9 into sewage conduit 10.

Device according to Figure 2 works in such way that by loading of flush bowl 1 by person will electric pressure sensor 2 or motion sensor 2 send an impulse to the power switch 3, that will start the action of fan 4 and subsequently will come to the exhaustion of smell from the area of flush bowl 1 through flush piping 5. Through exhaust piping 6 for conduction of smell into distribution piping 11 of air conditioning. To the termination of exhaustion of the area of flush bowl 1 will come following unloading of electric pressure sensos by person 2, alternatively of motion sensor 2, that will block the power switch 3 and this will stop the action of fan 4. Device according to Figure 3 solves combi flush bowl 1, where is between reservoir A with flush water and opening of flush water into flush bowl 1 inserted adaptor B with deflection for connection of exhaust piping 6 for connection to piping with ventilation fan 4, that is connected to sewage conduit 10 or to distribution piping 11 of air conditioning. By loading of flush bowl 1 by person will electric pressure sensor 2 or motion sensor 2 send an impulse to the power switch 3, that will start the action of fan 4 and subsequently will come to the exhaustion of smell from the area of flush bowl 1 through flush piping 5. Through exhaust piping 6 for conduction of smell into distribution piping 11 of air conditioning or do sewage conduit 10. To the termination of exhaustion of the area of flush bowl 1 will come following unloading of electric pressure sensor by person 2, alternatively of motion sensor 2, that will block the power switch 3 and this will stop the action of fan 4.