GR20160100161A - System for fast hot water supply - Google Patents

Abstract

Novelty: a system meant for the fast supply of hot water is disclosed. Constitution: a complex composed of a recirculation mechanism and a thermostatic recirculation valve both aiming at the water recirculation by inciting water to circulate into subsidiary networks, make cycles and be anew heated up at the heating source. The arrangement is monitored by a control system and comprises a pump, directional lines, flap valves, expansion vessels and sensors. The basic assembly is the thermostatic recirculation valve which bridges the branches of the subsidiary sub-networks, inciting water to flow through it. Said thermostatic valve contains a thermostat or a bimetal lamella or other thermally dilatable system able to return the valve to its initial position; another basic assembly is a special pump which is liable to rise the pressure inside the water network in order to overcome frictions and water mains pressure.

Description

Rapid Hot Water Supply System

DESCRIPTION

In recent years, many methods and products have been developed that ensure the supply of hot water to building or residential installations. Water heating is achieved either by burning fossil fuels, by electricity or by renewable sources.

The existing hot water supply methods correspond to a simple network without recirculation or a network with recirculation.

In the case of a network without recirculation, at rest, the water in the piping of the hot branch remains cold or lukewarm, depending on the time that has passed since the last time hot water was used. Even insulated hot water pipes give off heat, and eventually the water and pipes reach ambient temperature. When the user turns on the faucet, desiring a supply of hot water, the piping of the hot branch should be completely emptied of the cold water it contains and filled with hot water coming from the heating source. The delay in the arrival of hot water causes a lot of waste, as every time the user wants hot water, several liters of clean water are discarded. Also, in addition to cold water, hot water also ends up in the drain, as it takes time before its arrival is noticed.

In the case of recirculation, this is achieved, either by using additional piping to return the water to the heating source, or by returning it from the cold water sector. In both cases, a pump forces the water into recirculation. The hot water branch through the additional piping communicates and returns hot water to the heating source. In this case, the installation of the return network must be done from the beginning of the construction, which means additional costs of materials and labor. If a study has not been done during the initial construction of the water network, the subsequent installation is very difficult because expensive interventions must be made in the building and construction. Most buildings in the world do not have this recirculation system. As long as there is no good insulation in the network of the hot water and return branches, then there is unnecessary energy consumption in the form of heat loss expelled from the pipe to the environment, as well as electricity consumption for the operation of the pump. Also, there are thermal losses since the water must circulate throughout the network installation. Another disadvantage of this technology is that the return pipe reaches the end of each branch so every time it is used, regardless of the position of the tap in relation to the heating source, water is sent along the entire length of the piping to the most distant faucet. Finally, if it is desired that the circulator operates only when necessary, electrical facilities are required to turn it on and off.

The above method is economically advantageous in hotels and general facilities that serve a large number of people and the use is permanent.

There are different approaches to the issue of re-release without the use of a third branch. An alternative is to place a pump on each faucet that recirculates only for that particular faucet. This method has the disadvantage that we need a pump for each faucet as well as

reservation of space under the faucet for the installation of the pump, which is not always possible. Also a condition is the availability of electricity supply under the tap.

In addition, there are thermostatic jumpers that are placed under the faucet to achieve water recirculation with a remote pump, but the downside of this method is that the pumps operate on a user-set timer, which means that they often run unnecessarily when the user is absent from the area and they also circulate the hot water in all branches of the house and not only in the tap that is being used. These thermostatic jumpers have the disadvantage that, due to incomplete sealing, they allow the flow of hot water into the cold branch and many times the taps end up giving hot water from both branches.

From US 4 554688 a device is known which provides for each hot water pipe and an additional branch which leads the water to the heating source if the temperature drops. Recirculation is carried out using a valve, sensors, pump, etc. This arrangement presents increased heat losses to the environment as the pipes are always hot while the pump operation intermittently causes increased energy consumption. In addition, this arrangement cannot be applied to already existing hot water supply installations as it requires modification of the existing network by inserting new pipes, which is expensive in case the network is built-in.

US 5261 443 is a device that provides for the recirculation of water in the existing network in a similar way as the previous one, but uses electrical elements such as electric valves and electric sensors for activating the pump, while a temperature sensor is placed in each faucet. The disadvantage of this arrangement is the existence of electric cables and voltage in places with a high content of water vapor such as showers, faucets, etc. which poses risks in case of any current leakage. Furthermore, inserting power cables at such points is practically difficult and expensive in an existing building structure.

US 2009/0211644 A1 provides for a recirculation system which at each end of the hot water has an electrical jumper which allows the flow of water from the hot branch to the heating source via the cold branch. Recirculation is initiated with the help of a logic circuit that is programmed by the user to operate at predetermined times of the day. The specific arrangement presents particular complexity due to the many sensors and electrical components while the many wiring in places with moisture is, as mentioned above, dreaded. Also, the logic circuit that is implemented is often not identical or compatible with the needs of the user.

The patent EP 2 554919 A1 provides that, for each tap there is an additional recirculation device, when the user requests hot water the mechanism starts the water recirculation until the moment when the hot water reaches the boil whereupon the flow begins. The main disadvantage of this arrangement is the high cost, as a pump and sensors that control its operation must be placed at each of the ends of the network that requires hot water. Another major disadvantage is that the user has to be close to the faucet when the flow is allowed to check it, while the volume of the construction elements makes it impossible to hide it.

US 7475 703 B2 provides a water recirculation device, which is placed near the faucet and in which a thermostatic valve is used which bridges the hot and cold water branches by activating or stopping the recirculation. The disadvantage of this arrangement is that the thermostat works automatically without the possibility of being activated by the user. In the case of one tap, the recirculation is successful, however, in the case where additional taps are added to the device, the invention does not perform as expected as the taps are placed in a network in parallel and thus only a subdivision of the original one passes through each tap with a recirculation device pump supply. In addition, the water which at the start of the recirculation runs through the cold pipes shows thermal losses due to heat exchange with the pipes and thus the valve allows the passage of warm water to the cold branch until the thermostat activates and stops the flow.

At this point we have to underline that the main challenge when creating a water recirculation system, is the creation of a control system that will correctly inform the pump controller, about the wishes of the users and the state of the supply network.

The present invention achieves:

1. High level of comfort when using the invention.

2. Economy in water consumption with zero losses.

3. Use of a single pump for all taps in the network.

4. The circulation of hot water takes place only when it is desired, limiting in this way thermal losses from unnecessary recirculation

5. The water flows only to the faucet that the user activates, without passing through any other piping and thus the minimum possible length of piping is heated

6. The pump runs as long as it takes for the hot water to reach the tap and then stops automatically, minimizing electricity consumption.

7. Minimize wiring length as water serves as a medium of information transmission

8. Placement of the Thermostatic Recirculation Valve on, in or very close to the food due to its small size.

9. Reduction of recirculation installation costs due to elimination of the hot water return branch

10. Reliability of the system due to the use of a minimum number of sensors 11. Placement in any installation even in existing networks without aesthetic and functional discomfort

12. Possibility of placement by low-skilled people

13. Creation of a New Type of pump impeller which incorporates all the necessary piping and sensors to collapse the device.

The invention is a system that contains three innovative sub-systems that cooperate with each other and work interrelatedly so that the final system gathers all the advantages of competing systems without their disadvantages.

The invention is characterized by the fact that it achieves the bridging of cold and hot water in an original way, making use of specially designed jumpers - switches, called Thermostatic Recirculation Valves. In particular, the bridging is carried out as close as possible to the tap even inside it with specially shaped mixing plates. At the same time, an intelligent water circulation system (controller) perceives the values of the sensors and activates or deactivates the pump accordingly, reducing its operating time to a minimum. In particular, the operating principle of the above invention is based on the pressure difference that exists between the hot and cold branches, values obtained from the appropriately placed pressure sensors and transferred to the controller.

The first point, in which our invention excels over the others, is the introduction of the Thermostatic Recirculation Valve, which is activated by the user when there is a desire for hot water. This valve allows the flow of water through it, between the two branches resulting in their bridging.

The advantage of this invention is that the small size of the Thermostatic Recirculation Valve allows it to be placed inside a mixing faucet mechanism, replacing the existing mechanism so that recirculation can be achieved with an additional movement of the lever. This movement is the displacement of the lever downwards which causes the bridging of the two branches, resulting in the initiation of recirculation. When the hot water reaches the faucet, the thermostat contained in the valve is activated, the bridging is interrupted and the faucet lever automatically returns to the original position. Returning the lever to the original position indicates that the hot water is ready for use. In existing networks where it is impossible to place the thermostatic recirculation valve inside the faucet, an alternative design of the valve is provided and its placement at the base of the faucet or near it.

The second point lies in informing the controller to activate or deactivate the pump, respectively. In contrast to other patents that aim to recirculate, ours does not use cables or wireless transmitters that carry electrical signals to inform the controller, but utilizes the pressure and flow of water as an information transmitter. For this purpose, the hot water branch that follows the heat source, obtains, using a suitable device, a higher pressure than the cold branch. Consequently, any change in the state of the network is perceived by the sensors leading the controller to the corresponding function.

In the following, the invention is explained in more detail on the basis of a preferred embodiment in conjunction with the figures. These show:

Fig. 1 : Total System of Recirculation and rapid supply of hot water inside the house

Fig. 2: an illustration of the overall structure of the Thermostatic Recirculation Valve of a certain type

Fig. 3: an illustration of one side of the Thermostatic Recirculation Valve plate shown in Fig. 2

Fig. 4: an illustration of the other side of the Thermostatic Recirculation Valve plate shown in Fig. 3

Fig. 5: an illustration of the view of the second plate of the Thermostatic Recirculation Valve shown in Fig. 2

Fig. 6: an illustration of the Thermostatic Recirculation Valve of Fig. 2 in a shell

Fig. 7: an illustration of the components of a Thermostatic Recirculation Valve integrated into the mixer tap mechanism Fig. 8: an illustration of the bottom plate of the Thermostatic Recirculation Valve integrated into the mixer tap mechanism shown in Figure 7

Fig. 9: an illustration of the rear view of the bottom plate of the Thermostat

Recirculation Valve integrated into its mechanism

mixer shown in Figure 7

Fig. 10: an illustration of the middle plate of the Thermostatic Recirculation Valve incorporated in the mixer tap mechanism shown in Fig. 7

Fig. 11: an illustration of the rear view of the middle plate of the Thermostat

Recirculation Valve integrated into its mechanism

mixer shown in Figure 7

Fig. 12: an illustration of the top plate of the Thermostatic Recirculation Valve incorporated in the mixer tap mechanism shown in Fig. 7

Fig. 13: an illustration of the rear view of the Thermostatic top plate

Recirculation Valve integrated into its mechanism

mixer shown in Figure 7

Fig. 14: an illustration of the placement of the Thermostatic Recirculation Valve mechanism, shown in Fig. 2, on the faucet base.

Fig. 15: an illustration of the placement of the Thermostatic Recirculation Valve mechanism, shown in Fig. 2, near the faucet.

Fig. 16: an illustration of the additional movement in the mixer tap containing the Thermostatic Recirculation Valve shown in Fig. 7

Fig. 17: an illustration of the Thermostatic Valve mechanism

Recirculation using bimetallic plate and pin

Fig. 18: an illustration of the bottom plate of the Thermostatic Recirculation Valve using a bimetallic strip

Fig. 19: an illustration of the operation of the Thermostatic mechanism

Recirculation valve using a bimetallic plate

Fig. 20: an illustration of the shape of the bimetallic strip which

used in the Thermostatic Valve mechanism

Recirculation using a bimetallic plate

Fig. 21: a view of the Thermostatic Valve wall mechanism

Recirculation, shown in Figure 2, within a faucet

Fig. 22: an illustration of the wall elevation of the Thermostatic Valve

Recirculation, shown in Figure 2, within a faucet

Fig. 23: an illustration of the system and its components, incorporated into a new type of pump impeller

Fig. 24: an illustration of the new type of pump impeller

Fig. 25: an illustration of the body of the specially shaped pump housing

Fig. 26: an illustration of the body of the specially formed pump casing with its components

Fig. 27: an illustration of the overall pump system, with the special

shaped shell, the rotor and the electric motor

Fig. 28: an illustration of the controller logic used when controlling the system

Figure 1 illustrates the recirculation arrangement of our invention [1001]. In more detail, the water supply from the city network [130] which carries cold water, is branched into piping [130a] and [130b]. [130a] carries the cold water into the heating source assembly [132] and hot water now flows from there. Next is the water recirculation mechanism [1002] , a device that includes a parallel branch [109a] consisting of a non-return valve [133a] in series with a pump [134] and an expansion vessel [135H]. Branch [109a] also includes a pressure sensor [136H]. The installation of non-return valves [133a] & [133b] ensures that the water only passes in the direction of the outlet and not the other way around. Upon exiting the loop, a flow sensor [137H] follows, while the pipe [109] ends in the system [1003], i.e. the Thermostatic Recirculation Valve [1115] and the faucet [110]. Finally, the figure shows flow [137C], pressure [136C] and temperature [138C] sensors in the branch [130b] which carries cold water to the Thermostatic Recirculation Valve [1115] and the faucet [110]. All sensors send information to the controller [139] which activates or deactivates the pump [134]. This system is constructed so that the water in the piping after the non-return valves [133] and to the tap/s [110] has an increased pressure compared to the cold branch [130b]. The increase and maintenance of the pressure is ensured by the pump [134] which is activated at the command of the controller [139] receiving information from the pressure sensors [136H]&[136C].

In the description, the system 1002 consists of the Thermostatic Recirculation Valve [1115] and the outlet (faucet) [110]. The 1115a, 1115b and 1115c illustrated in Figures 2-13 are examples of different special geometries of the Thermostatic Recirculation Valve, with similar characteristics, with the same or different operating principle that perform the same task and have the same purpose, i.e. the activation or deactivation of the flow from one branch of water to another, based on the specific invention, . 110a, 110b and 110c are different examples - configurations of a typical tap-tap to meet the objectives of the particular arrangement.

Figure 2 shows the assembly of a Thermostatic Recirculation Valve [1115a] which corresponds to three components: two special shaped plates [101], [106] and a thermostat [105]. When the plates are in the closed position (Position A), the passage of water through the Thermostatic Recirculation Valve is blocked. The upper plate [106] in the closed position does not allow water to flow because the special terminations [102] & [104] (holes) in the lower plate are in such a position relative to the upper plate that they encounter an obstruction and seal the inlet and the exit of the water. Activation of the flow by the user is achieved by moving the upper plate [106] along the lower one [101], as a result of which the ends, which in the closed position sealed the water inlets, move away and lead the water into the recess [107]. The pressure of the water entering from the hole corresponding to the hot branch creates a flow which, passing through the body of the thermostat [105], exits from the other hole resulting in the recirculation of the water in the network. When the temperature of the water reaches the activation level of the thermostat, then its axis, due to thermal expansion of its content, is pushed out. Due to the seating of the thermostat [105] on the lower plate [101], its axis pushes and moves the upper plate [106] back to its original position, stopping the water flow. The displacement caused by the piston is equal to the difference in length of the two plates. The material adopted for these plates [101], [106] is ceramic or other material with corresponding mechanical hermetic sealing properties.

The Thermostatic Recirculation Valve [1115a] is surrounded by a shell [200] to which the piping of the two water branches is attached and hermetically seals the valve mechanism against water leakage using sealing rings.

Figure 3 shows the geometry of the bottom plate [101] which has small cross-section inlets of the two branches hot [102] and cold [104] and at the same time has a recess [103] of suitable geometry, so that the thermostat [105] can be located in such a way which cannot be moved relative to it.

Figure 4 shows the geometry of the other side of the plate 101 which has cross-sectional inlets corresponding to the piping of the two hot [102] and cold [104] branches.

Figure 5 shows the geometry of the top plate [106]

Figure 6 shows a section of the Thermostatic Recirculation Valve [1115a] of Figure 2 with the shell [200] to which the network supply pipes are attached and there is a suitable recess for the lever [199] which moves the upper plate [106] along the bottom [101]. The upper plate [106] is smaller in area than the lower one [101] and can be moved longitudinally relative to it. [106], has a recess [107] of specific geometry, so as to surround the part of the thermostat that protrudes from the bottom plate [101] and prevent any vertical displacement thereof.

Figure 7 illustrates the assembly of a Thermostatic Recirculation Valve [1115b] that is incorporated into the mixing mechanism of a mixing battery and corresponds to three components, the ceramic plates 115a, 115b and 115c.

In the following Figures 8 and 9, the geometry of the different faces of the plate [115a] is illustrated. More specifically, the lower plate [115a] has sockets for the piping [116], [117] of the hot and cold branch, while its configuration pushes the water to pass through smaller cross-section holes.

In Figures 10 and 11 , the geometry of the different faces of the middle plate is illustrated [115b]. The middle plate [115b], consists of two absolutely smooth faces. The face of Figure 10 is in contact with the lower plate [115a] and allows through the holes [116], [117] and the recess [119] the mixing of the hot and cold water in the position where the tap is open and allows the flow. In the position where the faucet is closed, the recess [119] ceases to cooperate with the lower plate [115a] and the water does not mix or flow to the outlet. The face of Figure 11 of the plate [115b] consists of a special shaped, based on the geometry of the thermostat, recess [123] in which it is also located. In addition, it has channels [122] , which allow water to surround the thermostat externally, activating its operation.

In Figures 12 and 13 , the geometry of the different faces of the upper plate is illustrated [115c]. The upper plate [115c] consists of a cavity [124] which houses the rest of the thermostat as well as a small volume of water intended for its activation.

The Thermostatic Recirculation Valve mechanism [1115b] replaces the existing mixing battery in the mixing taps by performing the work of mixing and at the same time the work of bridging and recirculation. Therefore, the size of the plates as well as their geometry is proportional to the size and geometry of the faucet. The mode of operation of this type of Thermostatic Recirculation Valve is based on the already existing mixing mode inside a mixing valve with the difference of the modification of the middle plate [115b] and the addition of the upper plate [115c]. The bottom [115a] is fixed with no degrees of freedom. The middle plate [115b] is smaller than the other two and performs in addition to translational movement along the remaining plates [115a] and [115c] and rotational movement around its axis in cooperation with the plate [115c] during the movement of tap lever 110c, as illustrated in Figure 16 [129]. Thus the degrees of freedom of the middle plate [115b] are defined as two. The top plate [115c] has one degree of freedom as it rotates with [115b].

These plates are preferably ceramic with a special surface in order to seal hermetically, thus trapping the water and preventing its exit from their body.

In the short-circuit position corresponding to the movement of the faucet lever 110c to the lower extreme position, as illustrated in Figure 16, water circulation is allowed through holes [116], [117] and [120], [121] to the plate [115c]. In order to avoid conditions of stress on the materials or leakage, we place a part made of endortic material (possibility of changing its volume due to changes in pressure) so that it absorbs the contractions - expansions of the system.

Figure 14 shows the installed Thermostatic Recirculation Valve [1115a] on the faucet base [110a]. This position is one of the proposed positions where 1115a can be inserted. As shown in the figure, the hot [109] and cold branch [130b] are joined in the valve body.

Figure 15 shows the mounted recirculation thermostatic valve [1115a] near the faucet [110b] and specifically in a place below the faucet where the two branches 109 and 130b are bridged.

Figure 16 shows the faucet body [110c] as well as the range of motion of the lever [125] after the modification and addition of the internal thermostatic recirculation valve [1115c]. The tap also acquires a new function of recirculation which is activated by a new movement that the lever can perform. This movement is downward [129] as opposed to the direction that increases the flow [128]. To perform this movement, the lever must be halfway from right to left.

Figure 17 shows the assembly of a Thermostatic Recirculation Valve [1115c] corresponding to several components. More specifically, its section A-A is illustrated. More specifically, the valve consists of a shaft [140], the upper plate [144], the bimetallic spiral plate [143], the lower plate [145], the sealing ring of the shaft [141] and finally the sealing ring of the plates [146]. The whole construction is integrated into a shell [201]. Activation of the Thermostatic Recirculation Valve [1115c] is done by the user by turning the shaft [140]. In the initial resting position, the upper plate [144] seals the holes [151] [152] located in the lower plate [145] and thus we have no leakage. When the user activates the Thermostatic Recirculation Valve [1115c], the rotation of the shaft [140] will align the holes [149] [150] of the upper plate [144], with the holes [151] [152] of the bottom plate [145] and thus there will be a bridging of the hot water pipe [109] with the cold pipe [130b]. The water will pass through the hot water pipe [109], through the hole [151], which is located in the bottom plate [145]. Due to the bridging with the upper plate [144], which has a hole [149] the water will fill the space where the bimetallic plate [143] is located and will exit through the hole [150] located in the upper plate

[144] and through the hole [152], located in the bottom plate [145] will continue to the cold water pipe [130b]. When the hot water comes into contact with the bimetallic spiral plate [143], which is properly adapted to the shaft [140], due to its properties, it will expand and thus rotate the shaft [140] resulting in a return to the original resting position. In this way and with the help of appropriate signaling (visual, audible or other) the user will be informed about the arrival of hot water at the tap. In order to avoid conditions of stress on the materials or leakage, we place a part made of an inductive material (possibility of changing its volume due to changes in pressure, i.e. a material that contains trapped gas bubbles in its mass) to absorb the contractions and expansions of the system.

Figure 18 shows the geometry of the bottom plate bearing the holes [151] and [152]

Figure 19 shows the inside of the Thermostatic Recirculation Valve [1115c] and how it works.

Figure 20 shows the bimetallic strip [143] located within 1115c of Figure 17.

Figure 21 and 22 show the Thermostatic Recirculation Valve [1 115a] as an addition to a wall faucet [110d]. Its installation can be done, as we mentioned above, on the wall and specifically on the back of the faucet [110d] . The operation of the Thermostatic Recirculation Valve [1115a] is the same as in the case of Figure 7. The main difference is its placement in a special molded part [149].

Figure 23 shows in diagram the part of the system [160] and its components which are now integrated into a specially designed pump shell which, by incorporating an impeller and fitting to an electric motor, replaces the arrangement [160]

Figure 24 shows the new type of pump impeller shell [160] containing cavities representing the branches of the loop of Figure 23 [109a].

Figures 25 and 26 show in more detail the new type of pump impeller shell [160] in various aspects. Said shell consists of cavities which represent and replace the branches of the loop of Figure 13A [109a] while containing an expansion vessel [135H] non-return valves [133a, 133b] inside its body as well as suitably placed pressure sensors [[136] and flow [137a] & [137b].

Figure 27 shows the assembly of the pump together with the specially designed shell [160], the impeller [161] and the electric motor [162] that may be used.

Figure 28 shows the system 1004 corresponding to the controller 149 which has signal inputs as well as an output for turning the pump on or off.

In this section it is appropriate to make extensive reference to the way and the logic by which the recirculation system illustrated in Figure 1 works

[0001] Initially, and as the system is at rest, the flow sensors

[137Ha],[137Hb] & [137C] , read zero flux in the piping. The pressure sensors [136] measure the pressure in the hot and cold branch and send the information to the controller [139]. Once the controller [139] reads that the pressure value of the hot [109] and cold [131b] branches are equal, it sends a signal to the pump to turn on and increase the pressure of the hot branch [109]. The operation of the pump causes an increase in pressure resulting in a volume of water entering the expansion vessel [135H], The pump stops [134] and the non-return valve [133a] & [133b] (or solenoid valve or other), seals hermetically and does not allow water leakage back to the heating source. This situation, where water in the piping is restricted between the check valves [133a] & [133b], the expansion vessel [135H], the taps [110] and the Thermostatic Recirculation Valves [1115] with a hot branch pressure greater than the cold branch , is the stand by point. Based on the state of readiness, we report the possible events that divert the network from this state.

[0002] In the case where the user activates the Thermostatic Recirculation Valve [1 115] , the expansion vessels [135H] and [135C] tend to acquire the same pressure due to the bridging and thus causes a flow of water through the Thermostatic Recirculation Valve [1115 ] from [135H] to

[135C], until pressure equalization is achieved. The pressure [136H] & [136C] and flow [137H] & [137C] sensors send signals with the corresponding values to the controller [139], which activates the pump [134] to recirculate the water. As soon as the temperature reaches the activation value of the thermostat [105] then it deactivates the short circuit and after the controller reads a hot branch pressure higher than the cold branch it deactivates the pump. Note Expansion vessel 136C has a different volume than 135H

[0003] In the event that one tap [110] (or more) is activated, only towards the hot branch, then the pressure in the expansion vessel [135H] will be relieved by water flow from the tap/s. After the expansion of the vessel is complete [135H] the pressure in the hot branch will decrease to a level less than the supply from the public network resulting in the non-return [113b] allowing flow from the network and the flow sensors of the hot branch [137Ha] & [137Hb] to send the new values to the controller. As long as the controller receives a flow indication from the flow sensors [137H] it does not activate the pump [134], When the user closes the tap/s [110], the flow will be zero and the pressure will be that of the supply network, which will return us to state [0001] .

[0004] In the event that one tap [110] (or more) is activated, only to the cold branch, then the flow will only take place in this branch [130b].

Cold branch pressure [136C] and flow [137C] sensors measure changes in values. By closing the tap, the supply is zeroed and we return to state [0001].

[0005] In the event that the flow of hot and cold water is activated simultaneously in one or more taps, then the pressure in both branches of the system decreases and we have flow. Pump operation is put on hold and branches will operate based on cases [0003] & [0004] respectively.

The software has registered solutions for all possible scenarios of changes that can occur in the networks, as well as their sequence and interaction, and can distinguish each case in order to find the optimal solution and accordingly activate or deactivate the pump and adjust its rotation speed

Claims (9)

1. Rapid hot water supply system [ 1001 ], which aims to recirculate the cold water located in the piping of the branch following the heating source [ 132 ] through the piping of the cold branch in order to achieve reheating of the water, the which includes the recirculation system [1002] which includes a pump [134], expansion vessels [135] and sensors for pressure [136], flow [137] and temperature [138], the system [1003] which includes a Thermostatic Recirculation Valve [1115] and a tap [110] and the system [1004] which includes a controller [139] which by receiving signals from the sensors of pressure [136], flow [137] and temperature [138] sends a signal to activate or deactivation of the pump [134] to increase the pressure in the hot branch to pass the cold water following the heating source [132] through the Thermostatic Recirculation Valve [1115] which is activated by the user's desire. 2. Thermostatic Recirculation Valve [1115], which is activated at the user's request either manually, remotely, or with an automation system and allows the passage and mixing of water through it, while when the temperature reaches a certain limit, the state change is activated of the thermostat or the bimetallic plate or any other such device and returns it to its original position by preventing and terminating the passage of water through it, which consists of contact plates of special geometry and the thermostat or bimetallic plate or any other system that changes the situation of during the temperature change and connection holes of the piping of the hot and cold branch. 3. Thermostatic recirculation valve according to claim 2, characterized by the fact that it consists of two contacting plates of different geometry that have a recess for the placement of a thermostat and holes of a special geometry that allow the passage and mixing of water through it and a thermostat for the purpose of resetting of the Thermostatic Recirculation Valve [1115a] in its initial position to terminate the passage and mixing of water and is activated at the user's request either manually, remotely, or with an automation system 4. Thermostatic Recirculation Valve according to claim 2, characterized in that it consists of three tangential plates of different geometry that have a recess for housing the thermostat and holes of special geometry that allow the passage and mixing of water through it and is placed inside the tap replacing the existing mixing batteries and thermostat in order to return the Thermostatic Recirculation Valve [1115b] to its original position to end the passage and mixing of water and is activated at the user's request either manually, remotely, or with an automation system. 5. Thermostatic Recirculation Valve according to claim 2, characterized by the fact that it consists of two contacting plates of different geometry that have holes for the passage and mixing of water through it and a bimetallic plate for the purpose of returning the Thermostatic Recirculation Valve [1115c] to its original position to terminate the passage and mixing of water and is activated at the user's request either manually, remotely, or with an automation system. 6. Faucet [110c] , which has the possibility of an additional downward movement apart from the known upward movement or the closed position by activating the Thermostatic Recirculation Valve [1115c] and allowing the passage and mixing of water through it without allowing the water outlet to the surrounding area and which includes a lever [125] and Thermostatic Recirculation Valve [1115c] 7. Controller [139], which receives signals from the sensors and based on its software activates or deactivates the operation of the pump [134] and which includes inputs to read signals from the sensors, power source or battery, memory and output. 8. Recirculation Mechanism [1002] , which allows the movement of water within the piping of the system to recirculate and reheat the water, which includes a pump [134], expansion vessels [135] and pressure sensors [136] , flow [ 137] and temperature [138] and is activated by the controller depending on the signals it receives. 9. Recirculation mechanism according to claim 8, characterized in that it consists of a pump with a special geometry shell [160] which performs the task of recirculating the fluid with the aim of replacing the branches [1002], which make up the loop [109a] to collapse it and which consists of cavities that represent and replace the network loop [109a], specially placed, inside it, non-return valves [133], specially placed externally or internally pressure sensors [136H] and flow sensors [137] as well as an expansion vessel [135H]. This device then incorporates a rotor [161] which is connected by means of a conventional pump to the shaft of the electric motor [162].