ES2883935T3 - Dual flow water flushing device - Google Patents

Abstract

Water discharge device with at least two flows, comprising: - a water inlet opening (25), a water delivery outlet opening (26) and - means forming a conduit (24) for the passage of a flow of water between the water inlet opening (25) and the water delivery outlet opening (26); - means forming a valve (20) closing the delivery outlet opening (26); - control means (21, 22) to control the opening and closing of the valve (20), the control means being arranged to be able to open the valve (20) from its closed position for at least two different time intervals , one large and one small, corresponding to the delivery of a large volume of water and a small volume of water to the delivery outlet (26), the control means comprise a control delay valve (21) having a chamber control retard chamber (22) with an emptying conduit (28) and being arranged such that emptying of at least a portion of the retard chamber (22) causes valve (20) to open and filling of the chamber (22) is closed, and the drive means (8) are provided to drive the emptying of at least one volume of the delay chamber (22) characterized in that the drive means (8) are connected by means of a paddle (9) to at least two control buttons (4, 5), so that when you press u One of the at least two buttons activates the emptying of a first large volume of the control delay chamber (22) and pressing the other of the at least two buttons activates, through the actuation means, the emptying of a second small volume, smaller than the large volume, of the control delay chamber (22), the actuation means comprising an actuation stem (8) and an actuation delay valve (27) comprising a chamber activation delay valve, the displacement of the stem (8) causes the opening of a drain duct (29) of the activation delay chamber of the activation delay valve (27), the activation delay valve (27) opens or closes during a time interval that can take at least two values and that depends on the travel of the actuating rod (8), the emptying duct (28) of the delay chamber (22) of the delay valve control (21), with the paddle (9) sandwiched between the two control knobs and the actuating stem (8) and mounted so that it can rotate with respect to a pivot point (10), rotation of the paddle causes the stem to move along along an actuation stroke.

Description

DESCRIPTION

Double flow water discharge device

The present invention relates to a dual-flow water discharge device having at least two control knobs to control the supply of a first large volume or a second smaller volume, respectively. Existing systems are not very reliable in their operation and, in particular, it often happens that the small volume supplied "drifts" over time and becomes too small, so that this functionality becomes inoperative.

Dual-flow flushing devices are already known in the prior art, in particular in US 2011/0155934. However, these flushing devices are hydraulically actuated and are expensive, complicated to manufacture, and unreliable.

It is desired to have a dual flow flushing system of the type mentioned above which is easier to manufacture and more reliable in its operation over time.

According to the invention, the at least two-flow water discharge device is as defined in claim 1, with improvements defined in the sub-claims.

By foreseeing the operation and control of the double discharge by means of two timed valves, a priming valve and a main valve, a particularly simple and reliable system is obtained.

According to the present invention, the actuation means comprise a timed actuation valve that opens or closes, during a time interval that can take at least two values, a drain conduit for the delay chamber of the control delay valve.

According to the present invention, the drive means comprise a stem, a vane is interposed between the two control knobs and the stem and is rotatably mounted with respect to a pivot point, the rotation of the vane causes the the stem moves through an actuating stroke, and the adjusting means adjusts the rotational stroke of the vane under the influence of the small volume knob, so as to adjust the actuating stroke of the stem when controlled by the knob. small volume, thus adjusting the second volume output. Thus, according to the invention, it can be ensured, by modifying the setting, that the small volume delivered is kept at a suitable value, so that the double flow operation remains effective during the life of the discharge device.

Preferably, the adjustment means comprise a wedge slidably mounted with respect to the vane and comprising a lower end section, an intermediate sloped section and an upper end section, the wedge thus acting on the position of a button stud. of small volume, being able to the stud depending on the respective displacement of the wedge with respect to the pallet, the wedge can press on the low section, preferably horizontal, of the wedge or on the inclined or inclined section of the wedge or on the high section , so that the wedge is located more or less close to the button of small volume, which regulates the stroke of the actuating rod.

By way of example, a preferred embodiment of the invention is now described with reference to the drawings, in which:

figure 1 is a front view of the control part of a double discharge device according to the invention, the vane being in an adjustment position in which the small volume is in the middle position; figure 2 is a sectional view of the device of figure 1 in maximum adjustment;

figure 3 is a front view of the device of figures 1 and 2 in which the adjustment paddle is in the position of maximum small volume;

Figure 4 is a sectional view of the device of Figure 3 in the position of maximum small volume; figure 5 is a front view in which the vane is in the position of minimum adjustment;

figure 6 is a sectional view in which the paddle is in the central position;

Figure 7 is a front view of the device shown in Figures 1 to 6 showing paddle actuation by the large volume button;

Figure 8 is a view of the device of Figures 1 to 7 showing the actuation of the paddle by the small volume knob in the minimum small volume setting position;

Figure 9 is a view identical to that of Figure 8 for a volume adjustment in the middle position;

Figure 10 is a view identical to Figures 8 and 9 for maximum small volume position adjustment; Y

figure 11 shows the device of the previous figures with the priming valve or actuator shown in more detail in the same cross-section as in figures 2, 4 and 6 to 10;

Figure 12 shows a sectional view of the water inlet pipe and the control delay valve; figure 13 shows a sectional view of the entire system, with the arrow indicating the direction of the water flow when emptying the delay chamber of the valve of the actuator of figure 11; Y

Figure 14 shows a section of the entire system, with the arrow indicating the direction of water flow when emptying the delay chamber of the control delay valve.

In the figures, a device is shown that forms a dual-flow discharge device according to the invention. Preferably, the cistern is embedded in a facade. A large volume button 4 protrudes from the front panel and allows the user to select to send the six liter large volume through the flushing device. A small volume button 5 also protrudes from the front panel and allows the user to select the supply of a small volume in the cistern, corresponding to a fraction of the large volume, for example three litres. Springs 6 and 7 are mounted together with the buttons to return them to their initial position after being pressed by the user.

Volumes (small or large) of discharge water are supplied through a discharge opening connected to a water supply line. The discharge opening is closed by a valve 20. The more or less large closing of the opening by the valve is controlled by a delay valve 21, called a control valve. The retardation control valve 21 includes a retardation control chamber 22 whose volume varies with the movement of a top plate 23 that limits the retardation chamber at the top. A spring is provided to push the top plate 23 upwards.

Plate 23 is connected to valve 20 to cooperate with the latter, so that in the raised position of the plate (maintained by equal water pressures on both sides and by spring action) the valve closes the opening while in the lowered position of the plate, the valve does not close the discharge opening and allows a flow of water to discharge.

The delay valve 21 is disposed within the water supply conduit 24 between a water inlet opening 25 and the discharge opening 26 closed by the valve.

The plate 23 delimits the delay chamber 22, but not in a completely leak-tight manner. Water from the conduit can pass into chamber 22 at the peripheral edge of plate 23.

In the normal position (i.e., during which the discharge device does not supply water), opening 26 is closed by valve 20 and the retarding chamber is filled with water, the conduit being under pressure from the water from the drainage system. supply and the water pressure being the same above and below the plate, which is thus in the upper position.

The movement of the plate 23 is controlled by fully or partially emptying the delay chamber 22 of the valve 21 through a emptying duct 28.

The delay chamber 22 is emptied through the conduit 28 in a certain quantity, namely a large quantity in the case that it is desired that the valve 20 remain off its seat for a long time, for a large volume of discharge supplied. , and a lesser amount in the event that it is desired that the valve 20 remain off its seat for a shorter time for a lesser delivered flush volume. This given quantity is determined by the opening time of the conduit. If a large amount of water is discharged, the time it takes for the plate 23 to rise due to the effect of water entering the retarding chamber at the periphery of the plate is long, and therefore the time for which the valve 20 is open is large and therefore the discharge device provides a large discharge volume. If a smaller quantity is emptied, the time it takes for plate 23 to rise due to the effect of water entering the delay chamber at the periphery of the plate is less, and therefore the time during which valve 20 is open is smaller, and therefore the flushing device delivers a smaller flush volume.

This total or partial emptying of the retarding chamber 22 causes the descent of the plate 23 (since the pressure of the water above it becomes greater than the pressure inside the chamber and the spring is adjusted not to oppose the descent of plate in such a case), causing valve 20 to move off its seat and open discharge opening 26, allowing a volume of water to be delivered.

The water supply takes place while the retard chamber 22 fills again, causing the plate 23 to gradually rise, causing the valve 20 to return to its seat, to the position where the water pressures in both sides of plate 23 equalize and the valve closes opening 26.

The time it takes for the retard chamber 22 to fill after being emptied defines the discharge water flow rate. In case the plate is lowered from a high height after emptying (adjustable by the volume of water emptied), the filling time is long and the delivered discharge volume is high, and in case the plate is lowered from a lower height (adjustable by the volume of water emptied), the filling time is shorter and the discharge volume supplied is correspondingly smaller.

To control or actuate the emptying of the delay chamber 22, and therefore the movement of the plate and that of the valve, the discharge control device further comprises a delay priming valve 27 (which therefore also comprises an actuation delay chamber). Valve 27 is arranged to open and close a drain line 28 of retard chamber 22.

The priming valve 27, or actuator, includes a stem 8, the movement of which causes the priming valve retard chamber drain passage 29 to open. This emptying of the delay chamber of the priming valve leads, according to a principle identical to that described for the cooperation between plate 23 and valve 20, to the opening of a valve of conduit 28 during the time in which the delay chamber from valve 27 is filled again. The volume emptied from the retarding chamber is proportional to the stroke of the stem 8, which in turn depends on the button pressed between the small volume button and the large volume button.

Mounted between the small and large volume buttons and the actuating stem is a paddle 9. The paddle is rotatably mounted with respect to an end pivot point 10. The paddle has a pad 11 intended to come into contact with the large volume button stem 4 and a pad 12 intended to contact the small volume button stem 5. Pad 11 is closer to the pivot point than pad 12.

A conduit 29 in the priming valve 27 puts the delay chamber of the valve 27 in fluid communication with the outside, as well as with the conduit 28 to discharge the water drawn from the chamber 22 into the opening 26, simultaneously with the delivery of large or small discharge volume through opening 26.

Therefore, in fine, the discharge volume supplied by the outlet opening is a function of the stroke of the actuating rod 8.

When the user presses the large volume button, as shown in Figure 7, the button stem 4 presses on the pad 11, rotating the paddle with respect to its pivot point 10, and the paddle presses on the drive stem. 8 priming valve. The corresponding stroke of the stem 8 leads to the emptying of the delay chamber of the priming valve, which leads to the opening of the conduit 28, then to the emptying of the delay chamber 22 and, finally, to the delivery of the large volume while chamber 22 refills, after conduit 28 is closed after refilling of the priming valve delay chamber.

A wedge 13 is mounted on the blade for sliding fit relative to the blade. In this way, it can be moved in the right or left direction in the figures, that is, towards or away from the pivot point 10 of the vane. This adjustment wedge 13 has an inclined stop that acts on the position of the pad 12, according to its position. In the position shown in Figure 3, the pad 12 rests on the lower horizontal part of the wedge. In the intermediate position, shown in figure 5, the pad 12 contacts the inclined part of the wedge. Finally, in the maximum position, shown in Figure 1, the pad 12 comes into contact with the wedge of the adjustment top. Thus, depending on the respective position of the adjustment wedge and the pad 12, the latter is more or less close to the small volume button 5. The closer it is (the so-called maximum position), the pushing action of the button 5 on the vane will cause a significant rotational travel of the vane in relation to its pivot point and the travel of the actuator stem will be greater under the effect of the vane thrust. On the contrary, the further away the pad is from the button 5, the smaller the rotation path of the blade will be when the button 5 is pressed and the smaller the translation of the primer actuation rod will be. Thus, the stroke of the actuator stem is proportional to the volume emptied from the delay chamber of the priming valve 17 and, therefore, to the time during which the conduit 18 empties the delay chamber 22 and, therefore, to the time during which valve 20 is off its seat and leaves port 26 open. The time during which port 26 is open also determines the volume of discharge delivered.

Thus, according to the system shown, the small discharge volume can be fine-tuned simply by sliding the wedge relative to the vane. In particular, as shown in the side views of the figures, indicia and also notches can be provided to easily adjust the translational slide of the adjusting wedge.

Claims (3)

1. Water discharge device with at least two flows, comprising: - a water inlet opening (25), a water delivery outlet opening (26) and - means forming a conduit (24) for the passage of a water flow between the water inlet opening (25) and the water delivery outlet opening (26); - means forming a valve (20) closing the delivery outlet opening (26); - control means (21, 22) to control the opening and closing of the valve (20), the control means being arranged to be able to open the valve (20) from its closed position for at least two different time intervals , one large and one small, corresponding to the delivery of a large volume of water and a small volume of water at the delivery outlet (26), the control means comprise a control delay valve (21) having a control delay chamber (22) with an emptying conduit (28) and being arranged in such a way that emptying at least a part of the delay chamber (22) causes the valve (20) to open and the filling chamber (22) to close, and the actuating means (8) are provided to actuate the emptying of at least one volume of the chamber. delay (22) characterized in that the drive means (8) are connected by means of a paddle (9) to at least two control buttons (4, 5), so that when one of the at least two buttons is pressed, the emptying of a first large volume of the control delay chamber (22) and pressing the other of the at least two buttons triggers, through the actuating means, the emptying of a second small volume, smaller than the large volume, of the chamber control delay (22), the actuation means comprising an actuation stem (8) and an actuation delay valve (27) comprising an actuation delay chamber, the movement of the stem (8) causes the opening of a discharge duct (29) of the actuation delay chamber of the actuation delay valve (27), the actuation delay valve (27) opens or closes during a time interval that can take at least two values and that depends on the path of the stem d e actuation (8), the duct (28) for emptying the delay chamber (22) of the control delay valve (21), the paddle (9) being sandwiched between the two control buttons and the actuation stem (8) and is rotatably mounted about a pivot point (10), rotation of the vane causes movement of the stem through an actuation stroke. 2. Water discharge device according to claim 1, characterized in that the adjustment means regulate the rotation path of the paddle (9) under the effect of the small-volume button (5) of at least two buttons (4, 5) such that the drive stroke of the drive rod (8) is adjusted when the small volume button (5) is actuated, in order to adjust the second delivered volume. 3. Water discharge device according to claim 2, characterized in that the adjustment means comprise a wedge (13) slidably mounted with respect to the vane (9) and comprising a lower end section, an intermediate inclined section and an upper end section, the wedge (13) thus acting on the position of a pad (12) coming from the small volume button (5), the pad (12) can, depending on the respective sliding of the wedge (13) with respect to the blade (9), press either on the lower section, preferably horizontal, of the wedge (13), or on the inclined or sloping section of the wedge (13), or on the end section top of the wedge (13), so that the pad (12) is more or less close to the small volume button (5), thus adjusting the stroke of the drive rod (8).