Magnetic gate valve with electromechanical actuator for cold water return

Abstract

The present invention relates to a smart valve that momentarily communicates hot water plumbing with cold water plumbing, the valve comprising a magnetic diverter gate with a electromechanical actuator and being installed in washbasins and / or sinks and which, in combination with a booster pump installed in a heater, allows the return of cold water drawn while waiting for hot water, directly to the heater. The device operates by opening the hot water tap, through which there is no flow until the hot water reaches the consumption point.

Description

[0001] MAGNETICALLY ACTING GATE VALVE AND ACTUATOR

[0002] ELECTROMECHANICAL FOR COLD WATER RETURN

[0003] FIELD OF INVENTION

[0004] The present invention relates to a valve that momentarily connects the hot water pipe to the cold water pipe, using permanent magnets to move the plunger of a gate to allow flow in one channel, that of the cold water pipe, and block another, that of the hot water tap, alternately.

[0005] This valve can be used independently to control water flow in tap and water supply systems or in combination with different cold water return systems that allow the water to run before the hot water reaches the demand points.

[0006] BACKGROUND OF THE INVENTION

[0007] Currently, valves used for water flow control are made up of mechanical parts that require seals to prevent water from passing from the flow channel to the outside at the points where the taps and opening and closing elements connect the gate systems with the external elements operated by the user or the actuator system designed for this purpose. In other words, the gate elements with the taps and levers that operate them.

[0008] WIPO registration number 2012251598 (VALVE AND FLOW CONTROL VALVE) presents a valve system whose objective is to prevent the production of impurities generated by the movement of a valve body but which requires coils and an electric current to modify the magnetic fields and achieve the attraction or repulsion of the magnets with which the valve body moves.

[0009] WIPO registration 775491 (AN ELECTRO-HYDRAULIC CONTROL DEVICE) refers to a fluid pressure control system in pistons from electromagnet-operated slide valves (solenoids) that operate when supplied with an electrical charge.

[0010] The patent with file number MX / a / 2016 / 014162 DEVICE OF

[0011] MECHANICAL-MAGNETIC ACTIVATION TO AUTOMATE THE FILLING OF WATER TANKS has two permanent magnets but they only serve to secure a float in a fixed position without it moving by magnetic action but by the effect of the variation in the liquid level of a tank.

[0012] Also, the patent with file PA / a / 2004 / 001694. SWITCHABLE MAGNETIC DEVICE Refers to a system that works with permanent bar magnets where the N pole is at one end and the S pole at the other end of the magnet.

[0013] OBJECTIVES OF THE INVENTION

[0014] The main objective of the present invention is to offer a more efficient, economical, and durable device comprised of a hermetically sealed body in which the only moving element is located inside the valve and has no contact with the outside nor is it directly actuated by any element. This, among other advantages, allows for wear-free movement.

[0015] It is a system that is powered by electricity only while in operation, with an actuator that aligns the magnet of the actuator itself with those of the gate piston in the direction necessary to allow flow in the direction of the supply to the tap or the return of the cold water while the hot water arrives, and it does not require a connection to the domestic network so that it can be installed without the need for wiring.

[0016] DESCRIPTION OF THE INVENTION

[0017] The present invention relates to an intelligent valve that momentarily connects the hot water pipe with the cold water pipe, which has a magnetic diversion gate and an electromechanical actuator for a cold water return system that is installed in sinks and / or showers, connecting the cold and hot water supply lines to the cold and hot water taps, and which opens and closes a flow gate by the attraction and repulsion of the magnetic field of a set of permanent magnets aligned with the orientation necessary for this purpose, and which incorporates at its supply end an electric generator that, by the action of the water flow, supplies electrical energy to the electromechanical actuator that aligns the magnet of the actuator with the magnets of the gate in the position necessary to, in one direction, direct the flow towards the tap and in the other direction towards the recirculation system.

[0018] In this way, as soon as the hot water tap of the sink or shower is opened, a flow switch is activated which activates the electromechanical device which in turn activates the gate system and at the same time, this flow causes a pressure pump to turn on, which must be installed in the heater in its automatic mode and which, when activated, propels the flow of water through the cold water pipe to complete the return process.

[0019] Once the hot water reaches the device, thus preventing the waste of the cold water contained in the pipe between the heater and the point of use, the device returns to its original flow position by means of the electromechanical actuator and the magnetic system. This system is activated by the normally open thermal switch, allowing hot water to flow to the taps while simultaneously interrupting the recirculation flow. In addition to the above function, when hot water reaches the device, a normally closed relay switch is activated at its terminal. Opening the circuit disconnects the communication between the flow switch and the gate system, so that while hot water is present at the point of use, the flow to the tap remains available and the device will not activate in recirculation mode simply by opening the tap.

[0020] Thus, the present invention provides a solution that prevents water from flowing from one pipe to another when the appliance is switched off, without the need for a separate valve. Therefore, hot water does not flow from the cold water tap when it is opened, nor does cold water flow from the hot water tap when it is opened.

[0021] Finally, the present invention offers a more economical, efficient, simple to install and operate solution that does not need an electrical connection or require special installations or investment in extraordinary construction materials outside of what is established in traditional housing construction structures and allows converting a conventional domestic hydraulic installation into a complete recirculation system.

[0022] BRIEF DESCRIPTION OF THE FIGURES

[0023] Figure 1 is a front cross-sectional view of the inside of the valve body base (A) showing the gate system in which the gate chamber (1), the diverter plunger (2), the diverter plunger magnets (2a and 2b), the hot water supply channel (7), the return channel (8), the cold water outlet (SAF), the hot water connection (CAC), the cold water connection (CAF), the plunger guide base (6), the plunger guide roof (5), the plunger guide post (4), the plunger offset groove (3), the actuator magnet (11), the stem bore (13), and the normally open flow switch (15) are identified.

[0024] Figure 2 is a view of the external rear of the valve body base (A) where the operating elements of the actuator system can be seen, which includes the normally open flow switch (15), the actuator motor (9) with its motor cam (12), the limit switch (19), the normally open and fixed temperature thermal switch (16), the primary relay (17), the secondary relay (18), the turbine generator (14), and the connection diagram between the different elements.

[0025] Figure 3 is a diagram view of the connections between the different elements of the actuator system, the state of the system switches where the switches are illustrated by their electronic symbols, as well as a detailed view of the position of the gate system, which together illustrate the operation of the system in standby mode.

[0026] Figure 4 shows a view of the elements described in Figure 3, which together illustrate the system's operation in startup mode when the hot water tap is opened. The flow switch (15) activates the actuator motor (9), and the motor cam (12) rotates to align the actuator magnet (11), displacing the diverter plunger (2) to return mode. Figure 5 shows a view of the elements described in Figure 3, which together illustrate the system's operation, the arrangement of the switches, and the position of the diverter plunger (2) when the system is in cold water return mode.

[0027] Figure 6 is a view of the elements described in Figure 3 which together illustrate the arrangement of the relays (17 and 18) that disable the flow switch (15) when the thermal switch (16) is activated, the operation of the actuator motor (9) and the rotation function of the motor cam (12) when hot water reaches the device.

[0028] Figure 7 is a view of the elements described in Figure 3 which together illustrate the position of the diverter plunger (2) and the arrangement of the relays (17 and 18) that keep the flow switch (15) disabled even when the thermal switch (16) has been deactivated while hot water is being used.

[0029] Figure 8 is a perspective view of the valve body elements in their assembly arrangement with the body base (A) and the body cover (B), where the motor cam (12), the actuator stem (10), the actuator magnet (11), and the stem bore (13) through which the actuator stem (10) is inserted are identified, as well as the diverter plunger (2), the position of the plunger magnets (2a and 2b), and the guide post (4), among the other elements that make up the gate system and the actuator system.

[0030] DETAILED DESCRIPTION OF THE INVENTION

[0031] As can be seen in figures 1, 2 and 8, the present invention relates to a magnetically actuated gate valve and electromechanical actuator for cold water return comprising a body base (A) with a hot water connection (CAC) through which the water from the hot water line enters, a hot water supply channel (7) that connects to the normally open flow switch (15) and supplies the hot water tap,a return channel (8) that connects the gate chamber (1) with the cold water outlet that feeds the cold water tap and with the cold water connection (CAF) which is where the water from the cold water line enters and in turn allows the cold water that passes through the return channel (8) to return to the heater while the hot water arrives at the device. The water flows through the hot water supply channel (7) or the return channel (8) depending on the position of the deflection plunger (2), which is the element that has two permanent magnets, the plunger magnet A (2a) and the plunger magnet B (2b), which are mounted opposite each other at the ends of the displacement groove (3) of the plunger and with their like poles facing each other, so that the displacement of the deflection plunger (2) will be determined by the position in which the actuator magnet (11) is aligned after rotating,Due to the effect of the actuator motor (9), the actuator rod (10), which is the spike-shaped element and has an actuator magnet (11), such that one of its poles points to the opposite pole of magnet A of the plunger (2a), attracting said magnet towards the guide post (4) and repelling the similar pole of magnet B of the plunger (2b), moving said magnet away from the guide post (4), thereby reinforcing the displacement of the deflection plunger (2) and thus allowing the displacement of the deflection plunger (2) towards one end or the other of the gate chamber (1).

[0032] For its electrical operation, as shown in Figure 2, the present invention comprises a direct current turbine generator (14) with a generator positive terminal (14pg) and a generator negative terminal (14ng); a normally open type flow switch (15) having a flow switch terminal A (15a) and a flow switch terminal B (15b); a normally open type thermal switch (16) with a thermal switch terminal A (16a) and a thermal switch terminal B (16b); a primary relay (17) with a primary relay coil positive terminal (17pb), a jumper terminal (17cnb) common to primary relay coil negative, and a primary relay normally open terminal (17na).Similarly, it has a secondary relay (18) to disable the flow switch (15) which in turn has a positive coil terminal (18pb) of the secondary relay, a negative coil terminal (18nb) of the secondary relay, a common terminal (18c) of the secondary relay and a normally closed terminal (18nc) of the secondary relay and finally, as illustrated in figure 2, the present invention also has a limit switch (19) which in turn is made up of a limit switch lever (pic), a limit switch button (bic), a common terminal (19c) of the limit switch, a normally open terminal (19na) of the limit switch and a normally closed terminal (19nc) of the limit switch.

[0033] As can be seen in Figures 1 and 2, the present invention has a turbine generator (14) which is the element that supplies electrical energy to the actuator motor (9) as well as to the primary relay (17) and the secondary relay (18) and is activated when the hot water tap is opened and the water flows through the gate chamber (1) towards the hot water supply channel (7) when operation begins or towards the return channel (8) for as long as the water is returning to the heater and even when the hot water reaches the device and the water passes again through the hot water supply channel (7) while it is being used in the shower or sink and likewise,In addition to the turbine generator (14), it has a group of interconnected switches that allow the actuator motor (9) to perform its function of orienting the actuator magnet (11) so that the diverter piston (2) directs the flow in the required direction and, likewise, the motor cam (12) actuates the lever (pic) of the limit switch and thus directs the current from the common terminal (19c) of the limit switch to the normally open terminal (19na) of the limit switch or to the normally closed terminal (19nc) of the limit switch. As illustrated in Figures 1 and 8, the deflection plunger (2) is installed in the gate chamber (1) by inserting the guide post (4) into the displacement groove (3) of the plunger so that the deflection plunger (2) sits between the guide roof (5) and the guide base (6), which are the structures that allow, as can be seen in Figures 3, 4,and 7 the deflection plunger (2) that can be moved laterally from the position in which it keeps the hot water supply channel (7) open and the return channel (8) closed to the position, as illustrated in Figures 5 and 6, in which the hot water supply channel (7) is closed and the return channel (8) is opened in response to the position of the poles of the actuator magnet (11) with reference to the pole of magnet A of the plunger (2a) which will be equal to the pole of magnet B of the plunger (2b) and which are oriented towards the guide post (4).

[0034] It is a feature of the present invention that the poles of the piston magnet A (2a) and the poles of the piston magnet B (2b) are arranged such that if the S pole of the piston magnet A (2a) is oriented towards the center of the displacement groove (3), the S pole of the piston magnet B (2b) must be oriented in the same way towards the same center, and if the N pole of the piston magnet A (2a) is oriented towards the center, then the N pole of the piston magnet B (2b) must also be oriented towards the center of the displacement groove (3) of the piston, without this affecting the scope of the present application.

[0035] The different switches are connected to each other, as illustrated in Figure 2, so that the positive terminal (14pg) of the generator connects to the coil positive terminal (17pb) of the secondary relay, to the coil positive terminal (18pb) of the secondary relay and to the positive terminal (9pm) of the actuator motor and the negative terminal (14ng) of the generator connects to the common terminal (18c) of the secondary relay, to terminal A of the thermal switch (16a) and to the normally open terminal (17na) of the primary relay; the common-to-coil negative jumper terminal (17cnb) of the primary relay connects to the coil negative terminal (18nb) of the secondary relay, to terminal (16b) of the thermal switch and to the normally open terminal (19na) of the limit switch; the normally closed terminal (18nc) of the secondary relay connects to terminal A of the flow switch (15a);The B terminal of the flow switch (15b) connects to the normally closed terminal (19nc) of the limit switch and finally, the common terminal (19c) of the limit switch connects to the negative terminal (9nm) of the actuator motor.;

[0036] In its operation, Figure 3 illustrates the position of all elements in rest mode, due to the lack of water flow when the hot water tap is closed, where it can be seen that the motor cam (12) is in the neutral position with the limit switch lever (pic) in its original free position and the limit switch button (bic) also released, the thermal switch (16) in its original normally open position, the flow switch (15) in its original normally open position, the primary relay (17) and the secondary relay (18) deactivated and also in their original position and the turbine generator (14) inactive due to the lack of flow.In this standby or rest state, the diverter plunger (2) is in a position such that the actuator magnet (11) is oriented so that it attracts the magnet A of the plunger (2a) towards the guide post (4) opening the flow through the hot water supply channel (7) and repels the magnet B of the plunger (2b) keeping the flow through the return channel (8) closed.It is a feature of the present invention that for its operation it requires the installation of a pressure booster or support pump installed in the cold water supply line of the heater, connected in its automatic function and which is activated as soon as the hot water tap is opened so that when the device subject to this application is in return mode, the water continues to flow through the return channel (8) and through the cold water connection (CAE) to the heater even when the hot water supply channel (7) is blocked by the diverter piston (2) and therefore there is no flow through the hot water tap.

[0037] Figure 4 shows the system when its operation begins by opening the hot water tap. This activates the pressure pump installed in the heater and allows flow through the turbine generator (14), which begins to generate electricity, as well as through the hot water supply channel (7). This activates the flow switch (15), closing the circuit between the negative terminal (14ng) of the generator, through the secondary relay (18) and the limit switch (19). This activates the actuator motor (9), causing it to rotate and modify the position of the actuator magnet (11) and the motor cam (12), as illustrated in Figure 5. The actuator magnet (11) changes the orientation of its poles, attracting magnet B of the piston (2b) towards the guide post (4) and repelling magnet A of the piston (2a), thus displacing the piston. (2) of diversion in the direction of blocking the flow of the channel ofsupply (7) of hot water and open it towards the return channel (8) and likewise positions the motor cam (12) in the position to press the lever (pic) of the limit switch, thus actuating the button (bic) of the limit switch, changing the connection of the common terminal (19c) from the normally closed terminal (19nc) of the limit switch to the normally open terminal (19na) of the limit switch so that the current flow from the negative terminal (9n) of the actuator motor is disconnected, deactivating it and leaving it in that position of pressing the lever (pi) of the limit switch for the entire time that the water is flowing through the return channel (8), returning the cold water to the heater and waiting for the arrival of the hot water, from the heater, to the device. As can be identified in figure 6, once the hot water reaches the device, the thermal switch (16) closes the connection circuit between theThe negative terminal (14ng) of the generator, through the normally open terminal (19na) of the limit switch and the common terminal (19c) of the limit switch, which are connected for this purpose because the motor cam (12) continues to press the lever (pic) of the limit switch and therefore keeps the button (bic) of the limit switch activated, with the negative terminal (9n) of the actuator motor activating the latter, which starts a new rotation to modify the position of the actuator magnet (11) as well as the motor cam (12) and in such a way as to accommodate them, as illustrated in figure 7, in such a way that the actuator magnet (11) changes the orientation of its poles so that it attracts the magnet A of the plunger (2a) towards the guide post (4) and repels the magnet B of the plunger (2b) in order to displace the deflection plunger (2) in the direction of blocking the flow of the return channel (8) and opening it towards the supply channel (7) of hot water in order toto allow the flow of hot water through the tap while it is in use. The movement of the actuator motor (9) illustrated in figure 6, likewise positions, as shown in figure 7, the motor cam (12) in the position of releasing the lever (pic) of the limit switch, thus releasing the button (bic) of the limit switch, changing the connection of the common terminal (19c) of the limit switch with the normally open terminal (19na) of the limit switch to the normally closed terminal (19nc) of the limit switch so that the current flow from the negative terminal (9n) of the actuator motor through the line of the thermal switch (16) is disconnected, deactivating it and leaving it in that rest position for the entire time that hot water is being used.

[0038] It is a feature of the proposed apparatus that the thermal switch (16) used in the device does not detect the temperature by increments but is activated by opening the circuit when the water reaches the device at a certain temperature.

[0039] Figure 6 shows that when the thermal switch (16) is activated and shuts off the current to the actuator motor (9), it also energizes the common-to-negative jumper terminal (17cnb) of the primary relay coil, closing the circuit with the normally open terminal (17na) of the primary relay. This, in turn, is activated by the coil and closes the loop, as the normally open terminal (17na) of the primary relay is energized directly from the generator. This allows the primary relay (17) to remain activated as long as electrical current is flowing from the turbine generator (14), as shown in Figure 7, even after the thermal switch (16) has been deactivated by the flow of cold water through the cold water outlet (SAF).

[0040] When the primary relay (17) is activated by the passage of current through the thermal switch (16) and is kept activated in loop mode while receiving current from the turbine generator (14), the secondary relay (18) is activated so that the common terminal (18c) of the secondary relay is disconnected from the normally closed terminal (18nc) of the secondary relay, which interrupts the communication of the negative terminal (14ng) of the generator with the flow switch (15) so that it is not activated by the water passing to the hot water tap while it is in use.Thus, while the primary relay (17) is connected in loop mode, even when the thermal switch is already in the open position and has stopped sending current to the common bridge terminal (17cnb) with the coil negative of the primary relay, it remains activated and therefore passes current to the coil negative terminal (18nb) of the secondary relay, thus preventing the common terminal (18c) of the secondary relay from coming into contact with the normally closed terminal (18nc) of the secondary relay and thus keeping the flow switch (15) deactivated until the hot water tap is closed, the turbine generator (14) is deactivated, as well as the pressure pump of the heater, and the whole system returns to its rest state, waiting for the next time it is to be used, as illustrated in Figure 3.

[0041] As shown in Figure 8, the deflection plunger (2) system is integrated by installing the deflection plunger (2) in the gate chamber (1) by inserting the guide post (4) through the displacement slot (3) of the plunger and subsequently closing the body cover (B) with the body base (A) to finally insert the actuator stem (10) through the stem bore (13) in such a way that the actuator magnet (11) is aligned, from inside the stem bore (13) at the level of the plunger magnet A (2a) and the plunger magnet B (2b).

Claims

CLAIMS Having sufficiently described my invention, I consider as novelty, and therefore claim as my exclusive property, the contents of the following claims:

1. A magnetically actuated gate valve with an electromechanical actuator for cold water return, characterized in that it comprises a body base with a hot water connection through which the water from the hot water line enters, a hot water supply channel that connects to the normally open flow switch and supplies the hot water tap, a return channel that connects the gate chamber to the cold water outlet that supplies the cold water tap and to the cold water connection through which the water from the cold water line enters, and in turn allows the cold water to return through the return channel to the heater while the hot water reaches the device where the water flows through the hot water supply channel or the return channel depending on the position of the diverter piston, which is the element that has two permanent magnets.the magnet, A of the piston and the piston magnet B which are mounted, one opposite the other, at the ends of the piston displacement groove and with their like poles facing each other so that the displacement of the deflecting piston will be determined by the position in which it is decided to align the actuating magnet by rotating, by the effect of the actuating motor, the actuating rod which is the spigot-shaped element and which has an actuating magnet such that one of its poles points to the opposite pole of the piston magnet A attracting said magnet towards the guide post and repelling the like pole of the piston magnet B away from said magnet from the guide post and thus allowing the displacement of the deflecting piston towards one end or the other of the gate chamber; a direct current turbine generator with a positive terminal of the generator and with a negative terminal of the generator;a normally open type flow switch having a flow switch terminal A and a flow switch terminal B; a normally open type thermal switch having a thermal switch terminal A as well as a thermal switch terminal B; a primary relay having a primary relay coil positive terminal, a common jumper terminal with primary relay coil negative; and a normally open terminal of the primary relay; it also has a secondary relay to disable the flow switch and which in turn has a positive terminal of the secondary relay coil, a negative terminal of the secondary relay coil, a common terminal of the secondary relay and a normally closed terminal of the secondary relay and finally it also has a limit switch which in turn is made up of a limit switch lever, a limit switch button, a common terminal of the limit switch, a normally open terminal of the limit switch and a normally closed terminal of the limit switch.

2. - A magnetically actuated gate valve with an electromechanical actuator for cold water return according to Claim 1, characterized in that it has a turbine generator which is the element that supplies electrical energy to the actuator motor as well as to the primary relay and the secondary relay and is activated when the hot water valve is opened and the water flows through the gate chamber towards the hot water supply channel, as well as a group of interconnected switches that allow that the actuator motor performs its function of orienting the actuator magnet so that the diverter plunger directs the flow in the required direction and likewise, the motor cam actuates the limit switch lever and therefore directs the current from the common terminal of the limit switch to the normally open terminal of the limit switch or to the normally closed terminal of the limit switch.

3. A magnetically actuated gate valve with an electromechanical actuator for tria water return according to Claim 1, characterized in that the diverter piston is installed in the gate chamber by inserting the guide post into the piston displacement groove, such that the diverter piston sits between the guide roof and the guide base so that it can be laterally displaced from the position where it keeps the hot water supply channel open and the return channel closed to the position where the hot water supply channel is closed and the return channel is opened, in response to the position of the actuator magnet poles with reference to the magnet pole A of the piston, which will be equal to the magnet pole B of the piston and are oriented towards the guide post. 4 A magnetically actuated gate valve and electromechanical actuator for cold water return according to Claim 1 characterized in that the poles of the piston magnet A and the poles of the piston magnet B are arranged such that if the S pole of the piston magnet A is oriented towards the center of the displacement groove, the S pole of the piston magnet B must be oriented in the same way towards the same center, and if the N pole of the piston magnet A is oriented towards the center, then the N pole of the piston magnet B must also be oriented towards the center of the piston displacement groove.

5. - A magnetically actuated gate valve with electromechanical actuator for water return according to Claim 1, characterized in that the positive terminal of the generator connects with the positive terminal of the coil of the secondary relay, with the positive terminal of the coil of the secondary relay, and with the positive terminal of the actuator motor and the negative terminal of the The generator connects to the common terminal of the secondary relay, to terminal A of the thermal switch, and to the normally open terminal of the primary relay; the common-to-negative jumper terminal of the primary relay connects to the negative terminal of the secondary relay coil, to the thermal switch terminal, and to the normally open terminal of the limit switch; the normally closed terminal of the secondary relay connects to terminal A of the flow switch; terminal B of the flow switch connects to the normally closed terminal of the limit switch; and finally, the common terminal of the limit switch connects to the negative terminal of the actuator motor.

6. A magnetically actuated gate valve with electromechanical actuator for tria water return according to Claim 1, characterized in that in rest mode, the motor cam is in the neutral position with the limit switch lever in its original free position and the limit switch button also released, the thermal switch in its original normally open position, the flow switch in its original normally open position, the primary relay and the secondary relay deactivated and equally in original position and the turbine generator inactive due to lack of flow, where in this state of waiting or rest, the diverter piston is in position such that the actuator magnet is oriented so that it attracts the piston magnet A towards the guide post opening the flow through the hot water supply channel and repels the piston magnet B keeping the flow through the return channel closed.

7. A magnetically actuated gate valve with an electromechanical actuator for tria water return according to Claim 1, characterized in that when its operation begins upon opening the hot water tap, it activates, on the one hand, the pressure pump installed in the water heater and, on the other hand, allows flow through the turbine generator, which begins to generate electricity, as well as through the hot water supply channel, which activates the flow switch, closing the circuit between the negative terminal of the generator, through the secondary relay and the limit switch, which activates the actuator motor so that it begins to rotate to modify the position of the actuator magnet as well as the motor cam and arrange them in such a way that the actuator magnet changes the The orientation of its poles attracts the piston's magnet B towards the guide post and repels the piston's magnet A, thus displacing the diverter piston to block the flow of hot water from the supply channel and open it towards the return channel. It also positions the motor cam to press the limit switch lever, thereby activating the limit switch button. This changes the connection of the common terminal from the normally closed terminal of the limit switch to the normally open terminal of the limit switch, disconnecting the current flow from the negative terminal of the motor to the actuator. This deactivates the motor and leaves it in the position of pressing the limit switch lever for as long as the water is flowing through the return channel, returning the cold water to the heater and awaiting the arrival of hot water from the heater to the device. 8.- A magnetically actuated gate valve with electromechanical actuator for tria water return according to Claim 1 characterized in that once the hot water reaches the device, the thermal switch closes the connection circuit between the terminal The negative terminal of the generator, through the normally open terminal of the limit switch and the common terminal of the limit switch, which are connected because the motor cam continues to press the limit switch lever and therefore keeps the limit switch button activated, with the negative terminal of the actuator motor activating the latter, which begins a new rotation to modify the position of the actuator magnet as well as the motor cam, and in such a way as to arrange them so that the actuator magnet changes the orientation of its poles so that it attracts magnet A of the plunger towards the guide post and repels magnet B of the plunger, thus moving the diverter plunger in the direction of blocking the flow of the return channel and opening it towards the hot water supply channel in order to allow the flow of hot water through the tap while it is in use and where the movement of the actuator motor positions theThe motor cam is in the position to release the limit switch lever, thus releasing the limit switch button and changing the connection of the limit switch's common terminal to the normally open terminal of the limit switch, thereby disconnecting it. the current flow from the negative terminal of the actuator motor through the thermal switch line, deactivating it and leaving it in that rest position for the entire time that hot water is being used.

9. A magnetically actuated gate valve with an electromechanical actuator for cold water return according to Claim 1, characterized in that when the thermal switch is activated and closes the current to the actuator motor, it also energizes the common-to-negative bridge terminal of the primary relay coil, closing the circuit with the normally open terminal of the primary relay, which, by action of the coil, is actuated and closed in loop mode when said normally open terminal of the same primary relay is energized directly from the generator, where, as long as there is electric current flowing from the turbine generator, the primary relay will remain actuated even when the thermal switch has been deactivated by the passage of cold water through the cold water outlet.

10. - A magnetically actuated gate valve with electromechanical actuator for water return according to Claim 1 characterized in that when the primary relay is actuated by the passage of current through the thermal switch and is kept actuated in loop mode while receiving current from the turbine generator, the secondary relay is actuated so that the common terminal of the secondary relay is disconnected from the normally closed terminal of the secondary relay, which interrupts the communication of the negative terminal of the generator with the flow switch so that it is not activated by the water passing towards the hot water tap while it is being used;Wherein, while the primary relay is connected in loop mode, even when the thermal switch is already in the open position and has stopped sending current to the common bridge terminal with the negative coil of the primary relay, it remains activated and therefore passes current to the negative coil terminal of the secondary relay, thus preventing the common terminal of the secondary relay from coming into contact with the normally closed terminal of the secondary switch and thus keeping it deactivated; flow switch until the hot water tap is closed, the turbine generator is deactivated as well as the heater's pressure pump and the entire system returns to its resting state. 11.- A magnetically actuated gate valve with electromechanical actuator for cold water return according to Claim 1 characterized in that the diverter piston system is integrated by installing the diverter piston in the gate chamber by inserting the guide post through the piston displacement groove and subsequently closing the body cover with the body base to finally insert the actuator stem through the stem bore in such a way that the actuator magnet is aligned, from inside the stem bore, at the level of the piston magnet A and the piston magnet B.

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