FR2808897A1 - Automatic distribution of chemical solution to be injected into a reservoir, uses ball valve controlled by float to allow delivery of solution when water level in cistern is low - Google Patents

Abstract

The additive dispenser has a dosage device (150) immersed in the water cistern (V). The additive holder (124) has a tube projecting downward (116) with its outlet closed by a ball (117). A float (186) raises the ball to close the additive outlet tube when the cistern is filled, and falls to allow release of additive while the water level in the cistern is low.

Description

The present invention relates to a device for automatically dispensing a chemical solution intended to be placed in a reservoir whose liquid level it contains may vary.

This reservoir may, for example, be constituted by a toilet flush for W. C. The invention finds application in the field of domestic water treatment.

When it is desired to dispense a chemical solution in water contained in a reservoir, a simple solution consists in placing a chemical solution diffuser in the reservoir so that a quantity of said solution can be diluted in the water of the reservoir. reservoir to produce a particular effect during the downstream flow mixture obtained for example a toilet bowl or its evacuation pipe.

This mixture can have a disinfecting effect for the WC bowl, an anti-clogging effect in the pipe to limit the formation of plugs, or even a deodorizing effect of the room.

The diffuser contains a chemical solution, usually in a solid form, which gradually dilutes in the water of the tank so that the dosage of the chemical solution is influenced in particular by the time between two consecutive uses flush.

Indeed, the concentration of the chemical solution in the tank water increases over time so that the properties of the mixture obtained are modified. To overcome this disadvantage, that is to say to deliver a determined dose with each use of the flush, it was thought to install a dosing pump for dispensing a determined amount of chemical solution in a tank. Although effective, this solution is very expensive in installation time, equipment and most often works with a source of electrical energy.

Moreover, the chemical solution is often scented and the diffusion of this perfume is carried out during the flow of the mixture downstream, so that the deodorizing virtues of this mixture are reduced.

A first object of the invention is therefore to provide an automatic dispensing device for dispensing a determined dose of a chemical solution into a reservoir during each emptying / filling cycle of the one and which is simple to implement, inexpensive and that works without a source of electrical energy. A second object of the invention is to provide an automatic dispensing device that allows the diffusion of perfume that can be contained in chemical solution.

For this purpose, the automatic dispensing device intended to dispense a determined quantity of a chemical solution into a reservoir and comprising a container intended to contain said chemical solution, is remarkable in that it comprises a metering device arranged in the reservoir and connected to the container, the metering device consisting of a valve connected to a float, said valve being slidably mounted in a sleeve between a first position where it closes the flow of the chemical solution contained in the container towards the sleeve when the level of liquid contained in the tank raises said float and a second position where said valve closes the flow of the chemical solution contained in the sleeve to the tank, when the level of liquid contained in the tank raises said float.

Thus, the automatic dispensing device of the invention is simple to implement, inexpensive and operates without a source of electrical energy. According to another characteristic of the invention, the automatic dispensing device whose container provided with an orifice of drain is housed in the tank, is remarkable in that the sleeve is mounted in translation adjustable on the drain hole to vary the internal volume of the sleeve cavity.

According to another characteristic of the invention, the valve consists of a ball housed in the cavity, the ball being intended to close off, either the external outlet of the drain orifice or an orifice made in the bottom of the cavity.

According to another characteristic of the invention, the automatic dispensing device whose container comprises a filling orifice, is remarkable in that the container is secured to the reservoir through its filling orifice which can pass through a hole provided in a wall side of said reservoir, a connector being screwed onto the filling orifice.

According to another characteristic of the invention, the container internally comprises a conduit whose first end opens into the container above the maximum allowable level of the chemical solution and a second end of which opens into the tank through the bottom, said conduit being intended to allow the expulsion of the volume of stagnant air above the level of the chemical solution to the outside of the tank through the filling orifice when the liquid contained in the tank while rising penetrates into said leads.

Thus the automatic dispensing device of the invention allows the diffusion of perfume contained in the chemical solution.

According to another characteristic of the invention, the automatic dispensing device, the container of which is mounted external to the reservoir, is remarkable in that the container is connected to the metering device by a siphon tube whose first end opens into the lower part of the container. a siphoid pocket disposed inside said container and whose bottom is open.

According to another characteristic of the invention, the sleeve is mounted adjustable in translation on the second end of the siphon tube for varying internal volume of the sleeve cavity.

According to another characteristic of the invention, the valve consists of a ball housed in the cavity, the ball being intended to close off, either the external outlet the second end or an orifice formed in the bottom of the cavity.

According to another characteristic of the invention, the automatic dispensing device comprises an air bell disposed in the reservoir and connected to the container by connection opening out of the siphoid pocket, the air bell being intended to allow the elevation of the pressure in the container when the rising tank liquid enters the air bell to allow priming of the siphon tube.

According to another characteristic of the invention, the air bell is secured to the tank by the connection that can pass through a hole provided in a side wall of said tank.

According to another characteristic of the invention, the automatic dispensing device comprises a cap temporarily closing a vent orifice made in the upper part of the container.

According to another characteristic of the invention, the container is removable.

The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being made in connection with the attached drawings, among which: FIG. . 1 is a sectional front view of a device for automatic dispensing of a chemical solution placed in a reservoir whose liquid level it contains has reached a maximum threshold, FIG. 2 is a sectional front view of an automatic dispensing device for a chemical solution placed in a reservoir during filling emptying, FIG. represents a sectional front view of an automatic dispensing device of a chemical solution placed in a reservoir whose liquid level it has reached a minimum threshold, FIG. is a sectional front view of an alternative embodiment of a device for automatically dispensing a chemical solution placed in a reservoir whose liquid level it contains has reached a maximum threshold, FIG. 5 is a sectional front view of an alternative embodiment of a device for automatic dispensing of a chemical solution placed in the reservoir during emptying or filling, and FIG. 6 is a sectional front view of an alternative embodiment of a device for automatically dispensing a chemical solution placed in a reservoir whose liquid level it contains has reached a minimum threshold.

The automatic dispensing device 100 of a chemical solution shown in FIG. 1 is placed in a tank V intended to be filled with a liquid, for example water, and then drained downstream to a use not shown, for example a toilet flush W.

The automatic delivery device <B> 100 </ B> comprises a container 110 for containing a chemical solution S, and which is connected to a metering device <B> 150. </ B>

The container 110 consists of an envelope comprising a filling orifice 1 1 situated on a lateral side 114d and which makes it possible to fill the container 110 with the chemical solution S, as well as a drain orifice 116 situated on a bottom 118 of said 110. The filling ports 111 and drain 116 are protruding walls of the container 110 to which they are connected.

The container 110 can be secured to the tank V via its filling orifice 111 which can pass through a hole T provided in a side wall of said tank. For this purpose, a coupling 112 can be screwed onto the filling orifice 111 to clamp the container 110 against the tank V, while a seal <B> 113 </ B> positioned on the filling orifice 111, and between the container 110 and the tank V, ensures a seal between the inside and the outside of the tank V around the filling orifice 111.

The container 110 also has a conduit 130 internally, a first end 122a opens into the container 110 above the maximum allowable level of the chemical solution S and a second end 122b opens into the tank V through the bottom 1 8. A FIG. 1, the duct 130 consists of three lateral sides of the container 110 and an internal partition 120.

In FIG. 2, this duct 130 allows, when the water level E2 contained in the tank V rises along the arrow M and reaches the bottom 118, to expel the air contained in the conduit 130, which has the effect of expelling the volume of air stagnant above the level of the chemical solution S, towards the outside of the tank V through the filling orifice 111, that is to say in the room where said tank V is installed. The volume of air stagnant above the level of the chemical solution S is particularly charged with odoriferous molecules that can contain the chemical solution S.

In FIG. 1, the metering device <B> 150 </ B> consists of a sleeve 160 having a cavity 162. An orifice 166 is formed in the bottom 164 of the cavity 162 for emptying the chemical solution contained in said cavity 162 and dilute it in the water of the tank V.

The sleeve <B> 160 </ B> is mounted mobile in translation on the emptying orifice 116 via the cavity 162 covering said emptying orifice 116.

The cavity 162 is mounted, for example, by a threaded connection or by a seal 170 housed between the inner wall of the cavity 162 and the outer wall of the emptying orifice 116, as shown in FIG. 1. In this way, when the sleeve 160 is slid over the drain port 116, the internal volume of the cavity 162 changes.

A valve 180 is slidably mounted in the sleeve 160. The valve 180 is constituted by a ball 182 housed in the cavity 162. This ball 182 is intended to seal, either the external outlet 117 of the emptying orifice 116, either the orifice 166.

The ball 182 is connected to a float <B> 186 </ B> located outside the sleeve 160 by means of a rod 184 passing through the orifice 166. To improve its guidance, the rod 184 can be guided during its movement in a passage 188 made in a guide well 163 formed in the extension of the first cavity 162.

Thus, in FIG. 3, when the water level E3 in the tank V is at its minimum, it is located below the float 186, the ball 182 rests by gravity on the orifice 166, thus closing the emptying of the cavity 162.

In FIG. 2, when the water level E2 rises in the tank V, following the arrow M, it reaches and lifts the float 186, the ball 182 then leaves the orifice 166, which allows the chemical solution optionally contained in the cavity 162 to drain into the tank water, then the ball 182 closes the external outlet 117 of the emptying orifice 116, thereby interrupting the flow of chemical solution S from the container 1 to the cavity <B> 162. </ B>

When it is desired to dilute a determined quantity of chemical solution S in the tank V, the container 10 must first be filled with said chemical solution and then fill the tank V with water to its maximum level E1, as shown. in FIG. 1.

Under these conditions, the external outlet 117 of the emptying hole 116 of the container is closed by the ball <B> 182 </ B> under the effect of the thrust of the float 186 immersed in the water of the tank V.

When the tank V is drained, the water level E2 descends in the direction of the arrow D in FIG. 2, so as to partially discover the float 186. The ball 182 then leaves the external outlet 117 of the emptying orifice 116 of the container 1 which allows the filling of the cavity 162.

The emptying of the tank V continues, and the water level E3 continues to descend into the tank V to reach its minimum level, as shown in FIG. 3, the float 186 is no longer immersed, causing the ball <B> 182 </ B> to gravity rest on the orifice 166, and thereby prevent emptying of the cavity <B> 162. </ B>

When the tank V fills, the water level E2 rises along the arrow M, as shown in FIG. 2, to reach the float 186. This then raises the ball 182 of the orifice 166, so that the emptying of the cavity <B> 162 </ B> operates.

The filling of the tank V continues, the float <B> 186 </ B> is submerged again, which allows the ball 182 to close the external outlet 117 of the emptying orifice 116, which suspends the flow of the chemical solution S from the container 110 to the cavity 162, as shown in FIG. 1.

The amount of chemical solution S contained in the sleeve 160 and intended to be diluted in the water of the tank V may be modified, so as to define a particular degree of dilution. It is necessary, to modify this quantity, to translate the sleeve 160 in translation on the emptying orifice 116, which has the effect of modifying the internal volume of the cavity 162. By bringing the sleeve 160 closer to the container 110, this volume is reduced. By moving it away, the volume increases.

In FIG. 2, when the water level of the tank V rises along the arrow it reaches and rises above the bottom 118 of the container 110. From this moment, the air contained in the conduit 130 flush stagnant air above the level of the chemical solution S contained in the container 110, and which is loaded with odoriferous molecules that may contain the chemical solution S, towards the outside of the tank V through the filling orifice 111, up to the level E1 of the water contained in the tank V has reached its maximum level, as shown in FIG. 1.

In an alternative embodiment shown in 4, an automatic dispensing device 100a comprises a container 110a which is connected by a siphon tube 220a to a metering device 150a disposed inside the tank V.

The container 110a for containing a chemical solution S is attached to the outside of a tank V. The container 110a comprises a siphoid bag 112a disposed inside said container 110a and whose bottom 114a is open.

The level of the chemical solution S contained in the container 110a must be positioned higher than the bottom 114a to allow the operation of the siphoid bag 112a, as will be explained later.

A cap 116a temporarily closes an air vent 118a made in the upper part of the container 110a.

An air bell 200a is installed inside the tank V. This air bell 200a consists of an envelope whose bottom 202a is not closed. The air bell 200a is fixed to the tank V by a connection 204a located in its upper part and which passes through a hole T 'provided in the side wall of said resenoir V. The connection 204a also opens into the container 1 and outside the siphoid pouch 112a for balancing the pressure P prevailing in the container <B> 11 </ B> 0a and in the air bell 200a. This pressure P is caused to be modified in particular when the level of the water contained in the reservoir V in rising reaches and exceeds the bottom 202a, that is to say when the water contained in the tank V enters the bell air 200a.

The siphon tube 220a passes to this effect in the connection 204a. More specifically, this siphon tube 220a has a first end 222a opens into the lower portion of the siphoid bag 112a of the container 110a and a second end 224a which opens into the tank V below the bottom level 202a.

In FIG. it will be noted that the second end 224a is positioned at a level very close to a plane passing through the bottom 202a.

The metering device 150a consists of a sleeve 160a having a cavity 162a. port 166a is formed in the bottom 164a of the cavity 1 for emptying the chemical solution contained in said cavity 162a so that it can be diluted in the water tank V.

The sleeve 160a is movably mounted in translation on the second end 224a through the cavity 162a covering said second end 224a. The cavity 162a is mounted, for example, by a threaded connection or by a seal 170a housed between the inner wall of the cavity 162a and the second end outer wall 224a, as shown in FIG. 4. In this way, when the sleeve 160a is slid on the second end 224a, the internal volume of the cavity 162a changes.

A valve 180a is slidably mounted in the sleeve 160a. The valve 180a consists of a ball 182a housed in the cavity 162a. This ball 182a is intended to close, either the external outlet 226a of the second end 224a, or the orifice 166a.

The ball 182a is connected to a float 186a located outside the sleeve 160a via a rod 184a through the orifice 166a. To improve its guidance during its movement, the rod 184a can be bent so that the float 186a can slide along the sleeve 160a.

Thus, in FIG. 6, when the water level E6 in the tank V is at its minimum, it is located below the float 186a, the ball 182a rests by gravity on the orifice 166a, thus closing the emptying of the cavity 162a. In FIG. 5, when the water level E5 rises in the tank V, following the arrow M, it reaches and lifts the float 186a, the ball 182a then leaves the orifice 166a, which allows the chemical solution possibly contained in the cavity 62a to drain into the tank water, then the ball 182a closes the outer outlet 226a the second end 224a, thereby interrupting the flow of the chemical solution S of the container 110a to the cavity 162a.

When it is desired to dilute a determined quantity of chemical solution S in tank V, the container 110a must first be filled with said chemical solution S, then fill the tank V with water to its maximum level E4, as is shown in FIG. 4.

Under these conditions, the external outlet 226a of the second end 224a of the container 110a is closed by the ball 182a under the effect of the thrust of the float 186a immersed in the water of the tank V.

To operate the automatic dispensing device 1 of a chemical solution, it must first be initiated.

To do this, the tank V must be emptied once so that the water level E5 visible in FIG. 5 down below the bottom level 202a in the direction of the arrow D.

When the tank V fills, the water level E5 rises along the arrow M to reach the float 186a. It then raises the ball 182a which leaves the orifice 166a to reach and close the external outlet 226a of the second end 224a of the siphon tube 220a.

The filling of the tank V continues, the water level E4 passes above the bottom 202a. The water then rises inside the air bell 200a, which raises the pressure in the container 110a and forces the chemical solution S to enter the siphon tube 220a by its first end 222a.

The chemical solution S then flows into the siphon tube 220a starts in the following manner. The air contained in this siphon tube 220a and downstream of the chemical solution S is compressed and can thus escape from the siphon tube 220a by pushing the ball 182a of the external outlet 226a of the second end 224a of the siphon tube 220a.

The automatic dispensing device 100a is then started. The cap 116a now removed so as to avoid the defusing of the automatic dispensing device 100a during the lowering of the water level in the air bell 200a.

From the second emptying of the tank V, the water level E5 descends in the direction of the arrow D in FIG. 5, so as to partially discover the float 186a. The ball 182a then leaves the external outlet 226a of the second end 224a of the siphon tube 220a, which allows, by a phenomenon of siphoning, the filling of the cavity 162a by the chemical solution contained in the container 110a.

The emptying of the tank V 'continues, and the water level E6 continues to descend into the tank V, to reach its minimum level, as shown in FIG. 6, the float 186a is no longer immersed, which causes the ball 182a to rest by gravity on the orifice 166a, and thereby prevents the emptying of the cavity 162a.

When the tank V fills, the water level E5 rises in the direction of the arrow M, as shown in FIG. 5, to reach the float 186a. It then raises the ball 182a of the orifice 166a, so that the emptying of the cavity 162a takes place.

The filling of the tank V continues, the float 186a is again immersed, which allows the ball 182a to close the external outlet 226a of the second end 224a of the siphon tube 220a, which suspends the flow of the chemical solution S of the container 110a in the cavity 162a, as shown in FIG. 4.

In FIG. 5, when the water level of the tank V rises in the direction of the arrow it reaches and rises above the bottom 202a of the air bell 200a.

 From this moment the stagnant air above the level of the chemical solution S contained in the container 110a, and which is loaded with odoriferous molecules that can contain the chemical solution S, is driven out of the tank V through the vent port 118a, until the water level E4 contained in the tank V reaches its maximum level, as shown in FIG. 5.

Claims (4)

1) Automatic dispensing device (100, 100a) for dispensing a determined quantity of a chemical solution (S) into a container (V, V '), the automatic dispensing device (100, 100a) comprising a container (110) , 110a) intended to contain said chemical solution (S), characterized in that it comprises a metering device (150, 150a) arranged in the reservoir (V, V) and connected to the container (110, 110a), the device metering device (150, 50a) consisting of a valve (180, 180a) connected to a float (186, 186a), said valve (180, 180a) being slidably mounted in a sleeve (160, 160a) between a first position it closes the flow of the chemical solution (S) contained in the container (110, 110a) to the sleeve (160, 160a) when the liquid level (E1) contained in the tank (V, V) raises said float (186, 186a) and a second position where said flap (180, 180a) closes the flow of the solution. the chemical (S) contained in the sleeve (160, 160a) towards the reservoir (V, V '), when the level of liquid (E3) contained in the reservoir (V, V') no longer lifts said float (186, 186a). 2) automatic dispensing device (100) according to claim 1, wherein the container (110) provided with a drain hole (116) is housed in the tank (V), characterized in that the sleeve (l60) is mounted adjustable in translation on the drain hole (116) for varying the internal volume of the cavity (162) of the sleeve (160). 3) automatic dispensing device (100) according to claim 1 or 2, characterized in that the valve (l80) consists of a ball (182) housed in the cavity (162), the ball (182) being intended for closing, either the external outlet (117) of the drain hole (116) or an orifice (166) formed in the bottom (164) of the cavity (162). 4) automatic dispensing device (100) according to one of claims 1 to 3, the container (110) has a filling port (111), characterized in that the container (110) is secured to the reservoir (V) through its filling orifice (111) which can pass through a hole (T) provided in a side wall of said tank (V), a connection (112) being screwed onto the filling orifice (111). Automatic dispensing device (l00) according to one of claims 1 or 4, characterized in that the container (110) internally comprises a conduit (130), a first end (122a) opens into the container (110) above the maximum permissible level of the chemical solution (S) and a second end (122b) of which opens into the tank (V) through the bottom (118), said duct (130) being intended to allow the expulsion of the volume of stagnant air above the level of the chemical solution (S) towards the outside of the tank (V) through the filling orifice (111) when the liquid contained in the tank (V) when rising enters said conduit (130). 6) automatic dispensing device (100a) according to claim 1, the container (110a) is mounted external to the tank (V '), characterized in that the container (110a) is connected to the metering device (150a) by a siphon tube (220a) whose first end (222a) opens into the lower part of a siphoid bag (112a) disposed inside said container (110a) and whose bottom (114a) is open. 7) automatic dispensing device (100a) according to claim 6, characterized in that the sleeve (160a) is mounted adjustable in translation on the second end (224a) of the siphon tube (220a) for varying the internal volume of the cavity (162a) of the sleeve (160a). Automatic dispensing device (100a) according to claim 6 or 7, characterized in that the valve (180a) consists of a ball (182a) housed in the cavity (162a), the ball (182a) being intended to seal, either the external outlet (226a) of the second end (224a) or an orifice (166a) formed in the bottom (164a) of the cavity <B> (</ B> 62a). 9) automatic dispensing device (100a) according to one of claims 6 to 8, characterized in that it comprises an air bell (200a) disposed in the tank (V) and connected to the container (110a) by a connection (204a) opening out of the siphoid pocket (112a), the bell (200a) being intended to allow the pressure in the container (110a) to rise when the rising liquid of the tank (V) enters in the air bell (200a) to allow priming of the siphon tube (220a). 10) Automatic dispensing device (100a) according to one of claims 6 to 9 characterized in that the air bell (200a) is secured to the tank (V) by the connection (204a) can pass through a hole (T ') provided in a side wall of said tank 11) Automatic dispensing device (100a) according to one of claims 6 to 10, characterized it comprises a cap (116a) temporarily closing an air vent (118a) realized in the upper part of the container (110a). 12) Automatic dispensing device (100a) according to one of claims 6 to 11, characterized in that the container (110a) is removable.