FR2670522A1 - Anti-contamination hand shower - Google Patents

Abstract

Anti-contamination safety device for a hand shower of a bath tub, characterised by the fact that the pipe (2) which supplies the shower head (7) comprises, at the outlet of the inverter (1), the connection point (4) of a branch pipe (5) which also leads into the shower head (7), and by the fact that this pipe (5) itself comprises the connection point (12) of a branch pipe (13) whose fixed terminal outlet (14) is situated in a position which can never be reached by the level of the water in the bath tub.

Description

As a general rule, States issue health regulations
shutters which prohibit the immersion of the spout when filling a
any tank with water from the distribution network.

This particularly applies to the filling of baths
in which the level must never reach the orifice through which water comes out of the taps, this in the case where the bath-shower diverter is in the bath position.

In the case of the shower position of the diverter, this regulation does not work because nothing prevents the user from immersing the shower
fixed on the end of its flexible pipe and this then creates a danger of pollution of the network by siphoning.

 The present invention relates to a device which eliminates this danger by means of an air intake interposed between the reverser and the shower, this air intake being arranged so as never to be in the position of backflow when the shower flows in the open air.

Figure 1 attached is a longitudinal section of the device given by way of non-limiting example, where it can be seen that, at the end of
the diverter (l) the supply water for the shower is channeled by a pipe (2) which has a throttle (3) in the vicinity of which and downstream is disposed the connection (4) of a bypass pipe (5) .

At its end (6), the pipe (2) opens into the dou
che (7) from which water comes out through the multiple holes in the face
(8) flow. On its side the pipe (5), by its end (9) also opens into the shower head (7) inside which it extends to cross the face (8) in the vicinity of which its end (10)
form an outlet for the water it carries, which thus mixes with that which passes through the pipe (2) to contribute to the function
wanted.

The pipe (5) has a constriction (11) in the vicinity of which and
downstream is arranged the connection (12) of a branch pipe (13),
the terminal orifice (14) is in a position fixed so as not to
never be reached by the water level in the bathtub.

In all of its part located downstream of the connection (12), the pipe
(5) is arranged so that the circulation of water is free
without braking that could cause narrowing or
elbows too pronounced. Likewise the pipe (13) will be in its entire length
adjusted to ensure the free circulation of fluids passing through it.

The operation of the device is as follows
By its movement, cooperating with the constriction (3), the circulating water
towards the shower by the pipe (2) creates in the area of the connection (4) a depression which tends to cause a suction inside this pipe which would never be supplied if the pressure was maintained at a very low level in the pipe (2).

 This is generally not the case due to the braking linked to the constrictions caused by the drainage holes so that a certain quantity of water is pumped into the pipe (5) o; it circulates freely until the throttle (11) at the outlet of which a depression is created which tends to cause a suction inside the pipe (13).

 The assembly is arranged so that, in the case where the pressure inside (2) reaches its highest possible value, the pressure of the water circulating in the pipe (5) never reaches a value which could cause any backflow inside the pipe (13).

 The orifice (14) can thus, in all circumstances, play its role of air intake and prevent the siphoning of polluted water from the bathtub in the distribution network.

 For the convenience of use of the installation, each of the pipes (2) and (5) comprises in its terminal part, a flexible element being the elements (15) and (16) and these two flexible elements can advantageously be housed at the interior of a single flexible sheath (17).

Claims (4)

 1.- Anti-pollution safety device for shower head  jib, characterized in that the pipe (2) which feeds the apple  shower (7) comprises, at the outlet of the diverter (1), the connection (4) of a  bypass pipe (5) which also opens into the shower head  (7) and that this pipe (5) itself comprises the connection (12) of a pipe  bypass (13) whose fixed terminal orifice (14) is located in a  position that can never be reached by the water level in  the bathtub.  2.- Anti-pollution safety device for shower head  fitting according to claim 1, characterized in that the pipe (2)  has a throttle (3) placed in the vicinity of the branch (4) and  upstream of it, that the pipe (5) has a throttle (11) placed at the  connection neighborhood (12) and upstream thereof and that the assembly  is arranged in such a way that, in the event that the residual pressure at  the interior of (2) reaches its highest possible value with or  green at the bottom of the flow, the pressure of the water flowing in  the pipe (5) never reaches a value that can cause backflow  any inside the pipe (13).  3.- Anti-pollution safety device for bay shower  gnoire, according to the preceding claims, characterized in that,  in its part placed downstream of (11), the pipe (5) has no  and a throttle or elbow that may slow the flow.  4.- Anti-pollution safety device for shower head  jib according to the preceding claims, characterized in that,  in their end part, the pipes (2) and (5) each comprise a flexible section, ie the sections (15) and (16) and that these sections are joined together inside a flexible sheath (17).