EP3653941A1 - Flüssigkeitsrückführungssystem - Google Patents

Flüssigkeitsrückführungssystem Download PDF

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Publication number
EP3653941A1
EP3653941A1 EP18382805.2A EP18382805A EP3653941A1 EP 3653941 A1 EP3653941 A1 EP 3653941A1 EP 18382805 A EP18382805 A EP 18382805A EP 3653941 A1 EP3653941 A1 EP 3653941A1
Authority
EP
European Patent Office
Prior art keywords
pump
processing circuit
communication cable
drive means
pipes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18382805.2A
Other languages
English (en)
French (fr)
Other versions
EP3653941B1 (de
Inventor
Pablo Capa Monzón
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to ES18382805T priority Critical patent/ES2902043T3/es
Priority to PT183828052T priority patent/PT3653941T/pt
Priority to PL18382805T priority patent/PL3653941T3/pl
Priority to EP18382805.2A priority patent/EP3653941B1/de
Priority to ES201931079U priority patent/ES1233109Y/es
Publication of EP3653941A1 publication Critical patent/EP3653941A1/de
Application granted granted Critical
Publication of EP3653941B1 publication Critical patent/EP3653941B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/04—Domestic or like local pipe systems
    • E03B7/045—Domestic or like local pipe systems diverting initially cold water in warm water supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0207—Pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0271—Valves

Definitions

  • the object of the present invention is to register a fluid recirculation system, especially suitable for Domestic Hot Water Installations (DHWI), although not limited thereto, which incorporates notable innovations and advantages over the current state of the existing technique.
  • DHWI domestic Hot Water Installations
  • the invention proposes the development of a recirculation process on an existing Domestic Hot Water Installations (DHWI) based on a water pump, a by-pass pipeline and a valve, located at the point of consumption.
  • DHWI domestic Hot Water Installations
  • One type of these devices consists of a system whose function is to recirculate the water coming from the boiler using the current installation, until it reaches the desired temperature.
  • the characteristic of these devices is that they do not need the installation of a water storage tank near the tap.
  • An example of a device is that shown in the document EP2554919 .
  • This device consists of an apparatus that is installed between one of the tap of the Domestic Hot Water Installations (DHWI) and its water intake. It is needed to have a socket nearby, however according to safety regulations in most countries, this socket, must be outside the volume delimited by the vertical planes located 0.5 m from the faucet sink, so its installation becomes expensive or unsightly.
  • DHWI domestic Hot Water Installations
  • the intermediate faucets between the boiler and the device will also have sanitary hot water without waste if the device has been previously activated. For this reason, the device must be placed on the faucet farthest from the boiler, being a drawback if the faucet is a shower.
  • the device due to the nature of its operation, if during the water pumping process another user opens cold water from an intermediate tap, the energy used in heating the water is wasted indefinitely until the intermediate tap is closed, this characteristic makes necessary the installation of similar devices in each of the intermediate taps to avoid this waste to occur, resulting on an important incretent of the installation costs. Therefore, this device is not suitable for homes with collective boilers.
  • the user activates the system by mistake or if he changes his mind about the temperature he wishes to use, the process can not be cancelled, and the user must wait for the water heating process to finish.
  • the system consists on pressure probes, solenoid valves and a pump located in the water intake of the boiler, the latter being configured to change the direction of advance of the water through the cold water pipe to the entrance of the boiler, and on the other hand a tap adapted with a valve-piston pressure multiplier, which when operated generates an overpressure in the cold water network that exceeds that of the external network, this pressure differential is detected by the pressure probes, sending an electrical signal that closes the main water inlet solenoid valve to the general circuit and activates said pump.
  • a thermal sensor incorporated in the tap detects that the water has reached the appropriate temperature and allows the outlet of the tap, causing the pressure drop in the circuit, and when this drop is detected, the pressure probes reopen the water intake of the general network and circulate it in the usual direction.
  • the main drawback of this solution is that the pressure probes do not detect with sufficient precision when the difference in pressure is due to the opening of a tap or other reasons, resulting on an erratic operation of the system and therefore making it inefficient.
  • the thermal sensor must give the signal to the tap that it allows the water to escape, regardless of whether the user is prepared to use the water, so it is very likely that water will be wasted, anyway.
  • the system closes the general outlet, so if another tap of the same branch is opened, a vacuum effect can be generated that can cause failure in other elements of the installation and in the pump itself.
  • a system is composed with a pump and adapted tap comprising a thermostatic bypass between the hot and cold water pipes, which is kept open as long as the water is hot, and closes when it is hot, while comprising a flow switch that controls the operation of the pump.
  • the drawback is generated when the installation comprises more than one tap with this system, since one would invalidate the operation of the other tap.
  • the fluid recirculation system of the present invention is intended installations with more than one branch, in which there is a need to recirculate the fluid between two points of the installation, either to modify the existing temperature of the fluid, to filter it or to mix it with other components, an example of this are facilities with Domestic Hot Water Installations (DHWI) with recirculation, either with individual or boiler with collective boiler systems.
  • DHWI domestic Hot Water Installations
  • the present system comprises a pumping module installed in one of the branches and one or more activation modules, which can be located at any place along the system with independence of the distance with the pumping module.
  • the system can also be formed by one or more bypass ducts, which communicate the outlet of a pipe at the point of consumption with another point of the installation, this bypass duct could be within the pipe itself, or an additional return pipe or a conduit that connects the outlet of said pipe with another pipe in the system that reaches the point of consumption.
  • the pumping module (4) is formed at least, by one of each of the following components linked together:
  • the installable activation module (5) at the consumption points is of the type that at least comprises:
  • a first aspect of the invention consists in that the system comprises at least one communication cable (7) that links at least one of the driving means (52) with the processing circuit (41) of the pumping module (4) for sending signals between them.
  • the communication cable (7) is configured to move and / or lodge through the interior of the pipes and connected to the pumping module (4).
  • the communication cable (7) is part of the pipes, being integrated in the contour of these.
  • the processing circuit (41) is configured to contact each cable (7), with the purpose of providing and / or receiving the signal from each drive means (52). This signal can consist, for example, and preferably in the start-up signal of the pump when the valve allows the passage through the bypass duct (6).
  • the drive means (52) is linked to the valve (51), so that when the drive means (52) is activated, the valve 51 opens the passage of the bypass duct, while sending a signal to start the pump.
  • the valve can also assume the task of shutting the outlet at consumption point.
  • the water pump When the water pump is turned on by the valve, it generates a current that creates a closed circuit fluid and de water recirculates through the pipes until hot enough.
  • the pumping module (4) can be installed in a branch where the pump (43) must be configured to circulate the fluid downstream or, alternatively, in a branch where the pump must be configured to circulate the fluid upstream. Additionally, to prolong the life of the pump (43) or to not affect the flow, the pump can be equipped with a clutch to be free when it is not activated or the pump module can have a bypass line parallel to the pump, enabled by at least one valve, so that when the pump is not being used, water circulates through this bypass line.
  • this may consist, for example, of a button, a switch, a thermostat, a timer or any other mechanical or electrical element that can generate a signal.
  • the components of the activation module (5) can be found integrated in a tap 3), and optionally, also the bypass duct (6).
  • the drive means (52) can form part of the hot water opening control itself, said control being configured to activate the valve (51) with a rotation in the opposite direction to its conventional opening, while simultaneously sending the signal to the processing circuit (41).
  • the pumping module (4) may comprise a battery, configured to provide sufficient energy to the processing circuit (41) and to the pump (43) so that it is properly disconnected in the event of a power outage.
  • the activation module (5) and / or the pumping module (4) can comprise automatic control elements, such as for example a temperature sensor, a pressure sensor, a timer, a programmable timer or a flowmeter, connected to the processing circuit (41), either through its same communication cable (7) or through another additional cable, the processing circuit (41) being configured to activate or stop the pump (43) when the element indicates it.
  • automatic control elements such as for example a temperature sensor, a pressure sensor, a timer, a programmable timer or a flowmeter, connected to the processing circuit (41), either through its same communication cable (7) or through another additional cable, the processing circuit (41) being configured to activate or stop the pump (43) when the element indicates it.
  • one of the temperature sensors can consist of a thermostat, so that the predetermined temperature value can be selected by the user from the activation module (5) itself.
  • the processing circuit (41) and / or the activation module (5) may comprise a timer configured to send instructions previously defined by the user, such as, for example, to indicate that the pump (43) is stopped after a predetermined period of time.
  • Figure 1 It is a schematic example of a preferred embodiment of the fluid recirculation system of the present invention.
  • the preferred embodiment of the fluid recirculation system shown in FIG. 1 is configured for Domestic Hot Water Installations (DHWI), which comprise a general conduit (1) that branches to a branch of hot water (11) and a branch of cold water (12), a water heater (2) located in the hot water branch (11) and at least one point of consumption with tap (3, 3') of hot and cold water, to each of which arrives a pair of pipes (11', 12'), one of hot water (11') that comes from the branch of hot water (11) and another of cold water (12') that comes from the branch of cold water (12).
  • DHWI Domestic Hot Water Installations
  • the system comprises a pumping module (4) and an activation module (5) located at a point of consumption, such activation module (5) integrating in its interior the bypass conduit (6) that allows the return of water from the hot water pipe (11 ') to the boiler (2).
  • the pumping module (4) comprises a processing circuit (41), a power source (42) and a pump (43).
  • the activation module (5) of this example in addition to the bypass duct (6), comprises, inside it, a valve (51) linked to the corresponding bypass duct (6) and which regulates its passage from water, and an actuating means (52) configured to mechanically actuate the valve (51).
  • the actuating means (52) of this example is represented as a push button.
  • the present system comprises a communication cable (7) that links the drive means (52) with the valve (51) and with the processing circuit (41).
  • the communication cable (7) is configured to receive and send a signal through the inside of the pipe and the cold water branch (12, 12') to the processing circuit (41).
  • the actuating means (52) is connected to the valve (51) so that when the actuating means (52) is activated, the valve opens the passage through the bypass conduit (6), sending simultaneously, a signal to the processing circuit (41).
  • This signal can consist of a start-up signal of the pump (43) so that the water coming from the hot water pipe (11 ') recirculates upstream through the cold water pipe (12') towards the heater (two). In this way, all the water in the closed circuit generated by the valve (51) and the bypass line (6) can be heated before it leaves the tap (3).
  • a pump module (4) installed in the hot water branch (11) is shown, in this case being independent of the type of bypass duct used and the pump (43) must be configured to drive the water downstream of the hot water branch (11).
  • the pump (43) could be installed on the cold water branch (12) and configured for to boost the water upstream.

Landscapes

  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Pipeline Systems (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Domestic Plumbing Installations (AREA)
EP18382805.2A 2018-11-15 2018-11-15 Flüssigkeitsrückführungssystem Active EP3653941B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES18382805T ES2902043T3 (es) 2018-11-15 2018-11-15 Sistema de recirculación de fluido
PT183828052T PT3653941T (pt) 2018-11-15 2018-11-15 Sistema de recirculação de fluido
PL18382805T PL3653941T3 (pl) 2018-11-15 2018-11-15 System recyrkulacji cieczy
EP18382805.2A EP3653941B1 (de) 2018-11-15 2018-11-15 Flüssigkeitsrückführungssystem
ES201931079U ES1233109Y (es) 2018-11-15 2019-06-26 Sistema de recirculación de fluidos

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18382805.2A EP3653941B1 (de) 2018-11-15 2018-11-15 Flüssigkeitsrückführungssystem

Publications (2)

Publication Number Publication Date
EP3653941A1 true EP3653941A1 (de) 2020-05-20
EP3653941B1 EP3653941B1 (de) 2021-09-08

Family

ID=65991498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18382805.2A Active EP3653941B1 (de) 2018-11-15 2018-11-15 Flüssigkeitsrückführungssystem

Country Status (4)

Country Link
EP (1) EP3653941B1 (de)
ES (2) ES2902043T3 (de)
PL (1) PL3653941T3 (de)
PT (1) PT3653941T (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12092344B2 (en) * 2021-08-02 2024-09-17 Dale Lee Anderson Controlling hot water recirculation

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1060933U (es) 2005-08-05 2005-12-01 Alfonso Cuervo-Arango Y De Cachavera Grifo y sistema asociado para el ahorro de agua.
EP2554919A1 (de) 2010-03-29 2013-02-06 Alfonso Cuervo-Arango Y De Cachavera Modulare wassersparvorrichtung
WO2013017938A1 (pt) * 2011-07-29 2013-02-07 Correia Alves Paulo Andre Instalacão, dispositivo e método para eliminacão do desperdício de água quando é aberta a torneira de água fria
ES2409082A1 (es) 2012-07-18 2013-06-24 Francisco Javier LARDIÉS SOBREVIELA Sistema de interrupción de paso de agua en instalaciones de consumo de agua.
ES2482941A1 (es) * 2013-02-05 2014-08-05 Universidad Politécnica de Madrid Sistema automático de recirculación de agua potable y método de funcionamiento
WO2015181411A1 (es) * 2014-05-27 2015-12-03 Métrica6 Ingeniería Y Desarrollos, S.L. Sistema de ahorro de agua y método de funcionamiento del mismo

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES1060933U (es) 2005-08-05 2005-12-01 Alfonso Cuervo-Arango Y De Cachavera Grifo y sistema asociado para el ahorro de agua.
EP2554919A1 (de) 2010-03-29 2013-02-06 Alfonso Cuervo-Arango Y De Cachavera Modulare wassersparvorrichtung
WO2013017938A1 (pt) * 2011-07-29 2013-02-07 Correia Alves Paulo Andre Instalacão, dispositivo e método para eliminacão do desperdício de água quando é aberta a torneira de água fria
ES2409082A1 (es) 2012-07-18 2013-06-24 Francisco Javier LARDIÉS SOBREVIELA Sistema de interrupción de paso de agua en instalaciones de consumo de agua.
ES2482941A1 (es) * 2013-02-05 2014-08-05 Universidad Politécnica de Madrid Sistema automático de recirculación de agua potable y método de funcionamiento
WO2015181411A1 (es) * 2014-05-27 2015-12-03 Métrica6 Ingeniería Y Desarrollos, S.L. Sistema de ahorro de agua y método de funcionamiento del mismo

Also Published As

Publication number Publication date
EP3653941B1 (de) 2021-09-08
PT3653941T (pt) 2021-12-10
ES1233109U (es) 2019-07-31
PL3653941T3 (pl) 2022-01-17
ES2902043T3 (es) 2022-03-24
ES1233109Y (es) 2019-10-21

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