WO2016120508A1 - Method for regulating a circuit for the recirculation of hot sanitary water, and electronic control circuit - Google Patents

Method for regulating a circuit for the recirculation of hot sanitary water, and electronic control circuit Download PDF

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Publication number
WO2016120508A1
WO2016120508A1 PCT/ES2016/000009 ES2016000009W WO2016120508A1 WO 2016120508 A1 WO2016120508 A1 WO 2016120508A1 ES 2016000009 W ES2016000009 W ES 2016000009W WO 2016120508 A1 WO2016120508 A1 WO 2016120508A1
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Prior art keywords
hot water
circuit
water
temperature
recirculation
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PCT/ES2016/000009
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Spanish (es)
French (fr)
Inventor
Salvador CASTELLÓ CASTELLÓ
Original Assignee
Castelló Castelló Salvador
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Publication of WO2016120508A1 publication Critical patent/WO2016120508A1/en

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • 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
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/30—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature
    • G05D23/32—Automatic controllers with an auxiliary heating device affecting the sensing element, e.g. for anticipating change of temperature with provision for adjustment of the effect of the auxiliary heating device, e.g. a function of time
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present invention relates to an electronic circuit that controls the hot water recirculation pump by turning the signal of a phosphosphate and a temperature sensor and whose function is to recirculate the water under demand signal in domestic hot water installations that have a water recirculation circuit.
  • the operating schedule is programmed with a time programmer.
  • the temperature of that point is measured with a temperature sensor located at the point of consumption,
  • the recirculation pump is activated until the temperature sensor goes on to mark a value corresponding to hot water. In this way, any hot water consumption point has hot water instantly.
  • a recirculation control system is usually installed consisting of a button located in each wet area, so that when a pulse is activated, a femporizer is activated that puts the recirculation pump into operation.
  • the recirculation pump only starts when there is a real demand for hot water, not continuously or under a specific schedule.
  • the present invention can be applied to installations that are in operation with a minimum cost as it does not require any additional installation to the electronic circuit.
  • the installation is very simple and the only thing you need is access to a power source, the phytostat, the temperature sensor and of course the recirculation pump.
  • This system can make installations with solar piacs come to work and be practical, or in any case, save energy.
  • document ES24Q1719T3 proposes an apparatus for controlling the water supply above a sink platform from a cold water source and a hot water source, the apparatus comprises: a mixing valve in fluid communication with the water source cold and hot water source, the mixing valve is located under the sink platform; an electronic user interface located above the sink platform; a pipe in fluid communication with an outlet of the mixing valve; and a controller functionally coupled to the electronic user interface and the mixing valve, including the electronic user interface a first sliding user input touch element for setting the water temperature and a second sliding user input touch element for setting the flow and a plurality of elements of pre-established contributions of tasks, each preset task nickname is operative to select at least two from temperature, flow, volume dispensed and flow pattern,
  • the objective is different, and the technical complexity of this invention is very different from the proposed invention, which consists of a single electronic module to adapt it to domestic water circuits with recirculation and that provides hot water to all the sinks of the circuit, not only to a specific point.
  • ES238S540A1 proposes a sanitary installation for water saving, of the type used in residential environments for the use of circulating water through the hot water outlet until it reaches the optimum temperature of use, which comprises a non-return valve inserted in the general entrance of water, a pumper arranged at the entrance of the heating device, and a plurality of hot water request buttons connected between the cold water and hot water circuit. This is the case described that works based on sensors distributed in humid areas that are eliminated in the proposed invention,
  • Document ES2353414A1 proposes a sanitary hot water recirculation device that is constituted from an electro valve located in the vicinity of the tap, a water inlet and two switched outlets, controlled by an electric timer operated by a push button provided with a operating indicator light, installed in sight, near the tap.
  • the inlet of this electro valve is connected to the hot water outlet of the boiler.
  • One of the outlets is connected by pipe to the hot water inlet of the tap.
  • the other outlet connects with the cold water inlet pipe to the boiler, thus forming the two switched outputs of the solenoid valve bypass between the hot water inlet to the tap and the cold one.
  • an electric water pump provided with a bypass, controlled by the aforementioned timer.
  • the system in this case is very complex, there is no similarity with the proposed invention.
  • Document ES2317717A1 describes a device for saving energy and energy that comprises a pump for (re) circulation, a flow detector, a stop system; integrable in a water supply system comprising one or more faucets; one or more water accumulators; one or more heating systems; a cold water supply; a hot water outlet from the accumulator; a water return inlet to the accumulator; a closed circuit of pipes that connect the water outlet of the accumulator and the water return entrance itself.
  • the user to obtain hot water, will have to perform an opening and instantly a shutdown of g ⁇ fo to produce a flow cut, activating the recirculation. After the time necessary to heat the pipes will open the tap again obtaining hot water instantly.
  • the invention proposed in this specification resembles this previous one in that in both the operation of a water recircuation system activated by the opening and closing of a water tap occurs. But the differences are many ⁇ among which as follows:
  • the constituent elements of the proposed installation are smaller, comprising only a hot water circuit with recirculation pump of any configuration, a flusostato, a pipe contact thermostat and a control device
  • the proposed system is simpler, materializing in an electronic circuit that connects to a low-cost and easy-to-install pipe contact thermostat, a normally reusable flusostat for being present in the hot water production source and a recircuation pump , not understanding more elements, since no accumulators, hot water production systems, or other systems are needed to take advantage of the hot water left over from the recircuation system.
  • the proposed system can be installed in any hot water installation with a recircuation pump without any change in the installation. No accumulator or concrete system of hot water production is required and contemplates any combination of these.
  • the system of the previous invention is based on the detection of the demand for hot water by the water flow line, which may result in the practice difficult to control, since in small installations it is important to take into account the water hammer produced by closing any tap, either hot water or cold water, activating said water hammer momentarily the flow sensors and producing a false demand, so this incidence should be detected and taken into account in the control circuit.
  • the recirculation pump is stopped when the hot water reaches the end of the route (normally located at the entrance of the recirculation pump) or at an endpoint of services, which must be the end of the route, but it can be located next to the farthest faucet, which saves the heating of the pipe section that goes from this point to the pump inlet.
  • a pipe thermostat will be placed in one place or another.
  • the installation requires an easy-to-install and low-cost pipe contact thermostat, a phytostat, being able to take advantage of the one that carries the same boiler, heater or heat production system or in the worst case one can be purchased and add it to the system, and a control device connected to the pump. Flusosia or has a significant loss of load, so that the recirculation time varies greatly if more elements with significant load losses are added, so it is advisable to take advantage of those that exist. This use can be made with an additional circuit in which a double output relay is added, one of these outputs being connected to the current circuit and the other to the control circuit.
  • the procedure for the regulation of a domestic hot water recirculation circuit is that if the temperature of the hot water consumption point is typical of cold water, the pump is activated for a certain time. If, before reaching the time limit, the own hot water temperature is reached in the temperature sensor of the consumption point, the system is switched off because this indicates that the water in the entire circuit is hot.
  • the system is switched off as this implies that the temperature of the accumulator is low or the boiler does not work.
  • the pump is disconnected after a programmed time.
  • an electronic control circuit is used, consisting of a water temperature sensor and a phytostat.
  • a signal is taken from the water circuit flusostat, said flusostat being an element present in the boilers and thermos, being able to take advantage of the one that already exists, and in case that said fiusostat would not be installed that install one in the hot water circuit.
  • the circuit described admits the entry of 2 independent flusostatos, and may require the input of the second flusostato of an additional electronic circuit, adding in this case a relay to the circuit.
  • Figure 1 Graphical representation of the electronic circuit
  • Figure 2 Schematic representation of operation
  • a preferred embodiment of the present invention can be based on an electronic control circuit (1), a water temperature sensor (2), a flusostat (3), timers (5) and diodes (8) to control the redrawing from Hot water pump.
  • a signal of the flusostato (3) of the water circuit is taken, said flusostato (3) being an element present in the boilers and thermos, being able to take advantage of the one that already exists, in case it is not if said flusostato (3) was installed, one would have to be installed in the hot water circuit.
  • the pump (4) is activated for a certain time. If, before reaching the time limit, the own hot water temperature in the temperature sensor (2) of the consumption point is reached, the system is switched off as this indicates that the water in the entire circuit is hot.
  • the system is switched off as this implies that the accumulator temperature is low or the boiler does not work.
  • the pump (4) is disconnected after a programmed time.
  • the described circuit admits the input of two independent flusostatos (3), and may require the signal input of the second flusostato (3) of an additional electronic circuit, adding in this case a relay to the circuit.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

The invention relates to a method for regulating a circuit for the recirculation of hot sanitary water, and to an electronic control circuit. The invention consists of an electronic control circuit, a water temperature sensor, a flow switch and a timer, characterised in that a signal from the flow switch of the water circuit is acquired when a hot water tap is opened, and if the temperature of the point-of-use of hot water is equivalent to that of cold water, the pump is activated for a determined amount of time. If the suitable hot water temperature is reached at the temperature sensor of the point-of-use before the time limit is reached, the system is disconnected, and if the timer reaches the time limit and the hot water temperature is not reached, the system is disconnected.

Description

PROCEDIMIENTO PARA LA REGULACIÓN DE UN CIRCUITO DE RECIRCULACIÓN DE AGUA CALIENTE SANITARIA Y CIRCUITO ELECTRÓNICO DE CONTROL OBJETO DE LA INVENCIÓN  PROCEDURE FOR THE REGULATION OF A SANITARY HOT WATER RECIRCULATION CIRCUIT AND ELECTRONIC CONTROL CIRCUIT OBJECT OF THE INVENTION
La presente invención se refiere a un circuito electrónico que controla la bomba de recirculación de agua caliente tornando la señal de un flusosfato y de un sensor de temperatura y cuya función es la de recircuiar ei agua bajo señal de demanda en instalaciones de agua caliente sanitaria que dispongan de circuito de recirculación de agua.  The present invention relates to an electronic circuit that controls the hot water recirculation pump by turning the signal of a phosphosphate and a temperature sensor and whose function is to recirculate the water under demand signal in domestic hot water installations that have a water recirculation circuit.
Resuelve el problema de optimizar las pérdidas de calor de agua debidas a la recirculación innecesaria en una instalación de agua caliente sanitaria, por lo que su aportación al estado de la técnica comprende la optimización de dichas pérdidas de calor a bajo coste, con aprovechamiento de la instalación ya realizada,  It solves the problem of optimizing water heat losses due to unnecessary recirculation in a domestic hot water installation, so that its contribution to the state of the art includes the optimization of said heat losses at low cost, taking advantage of the installation already done,
Las ventajas sobre lo conocido se reflejan en un ahorro energético frente a la mala gestión de la recirculación de agua en muchas instalaciones, consiguiéndose dicho ahorro gracias a una simple modificación del sistema de control que no requiere ninguna modificación del sistema.  The advantages over what is known are reflected in an energy saving compared to the poor management of water recirculation in many installations, achieving this saving thanks to a simple modification of the control system that does not require any modification of the system.
Dicha mala gestión liega en muchos casos a hacer obsoletaslas instalaciones de agua caliente, puesto que ésta ilega ya fría allí donde se necesita debido a las elevadas pérdidas de calor que esta mala gestión implica. Y es que cuando el acumulador de agua caliente y ei punto de consumo están ubicados a cierta distancia, ia solución normal de hacer llegar agua caliente dicho punto de consumo es disponer de un circuito de recirculación cuyo funcionamiento habitual es el siguiente:  Said bad management in many cases leads to obsolete hot water installations, since it is already cold where it is needed due to the high heat losses that this bad management implies. And it is that when the hot water accumulator and the consumption point are located at a certain distance, the normal solution of delivering hot water said consumption point is to have a recirculation circuit whose usual operation is as follows:
- Con un programador de tiempo se programa el horario de funcionamiento.  - The operating schedule is programmed with a time programmer.
Con un sensor de temperatura ubicado en el punto de consumo se mide ia temperatura de dicho punto,  The temperature of that point is measured with a temperature sensor located at the point of consumption,
- Cuando se dan las condiciones de estar dentro de horario de funcionamiento y el sensor de temperatura marca un valor correspondiente a agua fría, se activa la bomba de recirculación hasta que el sensor de temperatura pase a marcar un valor correspondiente a agua caliente. De esta forma, cualquier punto de consumo de agua caliente dispone de agua caliente al instante. - When the conditions of being within operating hours are met and the temperature sensor marks a value corresponding to cold water, the recirculation pump is activated until the temperature sensor goes on to mark a value corresponding to hot water. In this way, any hot water consumption point has hot water instantly.
Este sistema se aplica habituaimente en instalaciones de agua caliente de placassolares en bloques de viviendas, pero el sistema así planteado resulta bastante inútil pues se pierde la mayor parte del calor del acumulador de agua caliente en la recirculación, ya que la mayor parte del tiempo se dedica a recircular el agua sin que exista consumo. This system is usually applied in hot water installations of solar panels in housing blocks, but the system thus proposed is quite useless because most of the heat of the hot water accumulator is lost in the recirculation, since most of the time dedicates to recirculating water without consumption.
En instalaciones unrfamiliares, suele instalarse un sistema de control de recirculación consistente en un botón ubicado en cada zona húmeda, de forma que al pulsarse se activa un femporizador que pone en funcionamiento la bomba de recircuíación. Esto implica una instalación cableada o inalámbrica en cada zona húmedapara activar dicho circuito de recircuíación. In single-family installations, a recirculation control system is usually installed consisting of a button located in each wet area, so that when a pulse is activated, a femporizer is activated that puts the recirculation pump into operation. This implies a wired or wireless installation in each wet area to activate said recircuation circuit.
La solución que da la presente invención a este problema consiste en un circuito electrónico, muy económico, que no requiere modificar el circuito existente de recirculación, ni requiere instalación eléctrica alguna y que resuelve el problema de la siguiente forma: The solution that the present invention gives to this problem consists of a very economical electronic circuit, which does not require modifying the existing recirculation circuit, nor does it require any electrical installation and which solves the problem as follows:
- La bomba de recirculación sólo se pone en marcha cuando haya una demanda real de agua caliente, no de forma continuada ni bajo un horario en concreto.  - The recirculation pump only starts when there is a real demand for hot water, not continuously or under a specific schedule.
- La demanda se genera abriendo cualquier grifo de agua caliente durante 2-3 segundos.  - Demand is generated by opening any hot water tap for 2-3 seconds.
- Después de generar dicha demanda de agua caliente, se espera un cierto tiempo (de 1 a varios minutos en función del tiempo de recircuíación del agua) y al volver a abrir el grifo y sin perder agua, ya sale caliente. Esto en el caso de que el agua de recirculación estuviese fría, en caso contrario no es necesaria la espera, - After generating such demand for hot water, a certain time is expected (from 1 to several minutes depending on the water recircuation time) and when the tap is reopened and without losing water, it is already hot. This in the case that the recirculation water was cold, otherwise the wait is not necessary,
- La presente invención se puede aplicar a instalaciones que están en funcionamiento con un coste mínimo pues no requiere realizar ninguna instalación adicional al circuito eiectrónico. - La instalación es muy sencilla y ia único que necesita es acceso a una fuente de corriente, el fíusostato, el sensor de temperatura y por supuesto la bomba de recirculación. - The present invention can be applied to installations that are in operation with a minimum cost as it does not require any additional installation to the electronic circuit. - The installation is very simple and the only thing you need is access to a power source, the phytostat, the temperature sensor and of course the recirculation pump.
- Este sistema puede hacer que instalaciones con piacas solares lleguen a funcionar y ser prácticas, o en cualquier caso, ahorrar energía.  - This system can make installations with solar piacs come to work and be practical, or in any case, save energy.
ANTECEDENTES DE LA INVENCIÓN BACKGROUND OF THE INVENTION
Aunque no se ha encontrado ninguna invención idéntica a la descrita, exponemos a continuación los documentos encontrados que reflejan el estado de la técnica relacionado con la misma. Although no invention identical to that described has been found, we present below the documents found that reflect the state of the art related to it.
Así el documento ES24Q1719T3 propone un aparato para controlar el abastecimiento de agua por encima de una plataforma de fregadero desde una fuente de agua fría y una fuente de agua caliente, el aparato comprende: una válvula de mezcla en comunicación de fluidos con la fuente de agua fría y la fuente de agua caliente, la válvula de mezcla se encuentra debajo de la plataforma de fregadero; una ínterfaz electrónica de usuario situada encima de la plataforma de fregadero; un caño en comunicación de fluidos con una salida de ía válvula de mezcla; y un controlador acoplado funcionalmente a la interfaz electrónica de usuario y a la válvula de mezcla, incluyendo la ínterfaz electrónica de usuario un primer elemento táctil deslizante de aporte de usuario para establecer la temperatura del agua y un segundo elemento táctil deslizante de aporte de usuario para establecer el caudal y una pluralidad de elementos de aportes preestablecidos de tareas, cada apode preestablecido de tarea es operativo para seleccionar por lo menos dos de entre temperatura, caudal, volumen dispensado y patrón de flujo, En este casoel objetivo es distinto, y la complejidad técnica de esta invención es muy diferente a la invención propuesta, la cual consiste en un ónico módulo electrónico para adaptarlo a circuitos de agua corriente sanitaria con recirculación y que proporciona agua caliente a todos los sumideros del circuito, no sólo a un punto en concreto. Por otra parte, sólo se tienen en cuenta dos variables de entrada que son la señal del fíusostato y la temperatura del conducto del agua al final del circuito o punto alejado de! acumulador de calor, sin controlar mezclas ni caudales. Thus, document ES24Q1719T3 proposes an apparatus for controlling the water supply above a sink platform from a cold water source and a hot water source, the apparatus comprises: a mixing valve in fluid communication with the water source cold and hot water source, the mixing valve is located under the sink platform; an electronic user interface located above the sink platform; a pipe in fluid communication with an outlet of the mixing valve; and a controller functionally coupled to the electronic user interface and the mixing valve, including the electronic user interface a first sliding user input touch element for setting the water temperature and a second sliding user input touch element for setting the flow and a plurality of elements of pre-established contributions of tasks, each preset task nickname is operative to select at least two from temperature, flow, volume dispensed and flow pattern, In this case the objective is different, and the technical complexity of this invention is very different from the proposed invention, which consists of a single electronic module to adapt it to domestic water circuits with recirculation and that provides hot water to all the sinks of the circuit, not only to a specific point. On the other hand, only two input variables are taken into account, which are the signal of the phytostat and the temperature of the water conduit at the end of the circuit or point away from! heat accumulator, without controlling mixtures or flow rates.
ES238S540A1 propone una instalación sanitaria para ahorro de agua, del tipo de las utilizadas en entornos residenciales para el aprovechamiento del agua circulante por la salida de agua caliente hasta que alcanza la temperatura óptima de uso, que comprende una válvula antirretorno inserta en la entrada general de agua, una autobomba dispuesta en la entrada del dispositivo calentador, y una pluralidad de pulsadores solicitadores de agua caliente conectados entre el circuito de agua fría y de agua caliente. Este es el caso descrito que funciona a base de sensores distribuidos en zonas húmedas que se eliminan en la invención propuesta,  ES238S540A1 proposes a sanitary installation for water saving, of the type used in residential environments for the use of circulating water through the hot water outlet until it reaches the optimum temperature of use, which comprises a non-return valve inserted in the general entrance of water, a pumper arranged at the entrance of the heating device, and a plurality of hot water request buttons connected between the cold water and hot water circuit. This is the case described that works based on sensors distributed in humid areas that are eliminated in the proposed invention,
El documento ES2353414A1 propone un dispositivo de recirculacfán de agua caliente sanitaria que está constituido a partir de una electro válvula situada en las proximidades del grifo, de una entrada de agua y dos salidas conmutadas, controladas por un temporizador eléctrico accionado mediante un pulsador provisto de una luz indicadora de funcionamiento, instalado a la vista, en las cercanías del grifo. La entrada de esta electro válvula está conectada a la salida del agua caliente de la caldera. Una de las salidas está unida mediante tubería a la entrada de agua caliente del grifo. La otra salida conecta con la tubería de entrada del agua fría a la caldera, formando así las dos salidas conmutadas de la electro válvula un bypass entre la entrada del agua caliente al grifo y la de la fría. En el circuito de entrada de agua fría a la caldera, existe una bomba eléctrica de agua, provista de un bypass, controlada por el temporizador antes mencionado. El sistema en este caso es muy complejo, no existiendo similitud con la invención propuesta.  Document ES2353414A1 proposes a sanitary hot water recirculation device that is constituted from an electro valve located in the vicinity of the tap, a water inlet and two switched outlets, controlled by an electric timer operated by a push button provided with a operating indicator light, installed in sight, near the tap. The inlet of this electro valve is connected to the hot water outlet of the boiler. One of the outlets is connected by pipe to the hot water inlet of the tap. The other outlet connects with the cold water inlet pipe to the boiler, thus forming the two switched outputs of the solenoid valve bypass between the hot water inlet to the tap and the cold one. In the cold water inlet circuit to the boiler, there is an electric water pump, provided with a bypass, controlled by the aforementioned timer. The system in this case is very complex, there is no similarity with the proposed invention.
El documento ES2317717A1 describe un dispositivo para ahorro h id rico y energético que comprende una bomba para la (re)circulacidn, un detector de flujo, un sistema de parada; integrable en un sistema de suministro de agua que comprenda uno o más grifos; uno o varios acumuladores de agua; uno o más sistemas de calentamiento; un suministro de agua fría; una salida de agua caliente del acumulador; una entrada de retorno de agua ai acumulador; un circuito cerrado de tuberías que conecten la salida de agua del acumulador y la entrada de retomo de agua ai mismo. Ei usuario, para obtener agua caliente, tendrá que realizar una apertura y al instante un cierre de gñfo para producir un corte de flujo, activando ia recirculación, Pasado ei tiempo necesario para caientar las tuberías abrirá nuevamente el grifo obteniendo agua caliente instantáneamente. La invención propuesta en esta memoria descriptiva se asemeja a esta anterior en que en ambas se da el funcionamiento de un sistema de recircuiación de agua activado mediante ia apertura y cierre de un grifo de agua. Pero las diferencias son muchasí entre las cuales destacan ¡as siguientes: Document ES2317717A1 describes a device for saving energy and energy that comprises a pump for (re) circulation, a flow detector, a stop system; integrable in a water supply system comprising one or more faucets; one or more water accumulators; one or more heating systems; a cold water supply; a hot water outlet from the accumulator; a water return inlet to the accumulator; a closed circuit of pipes that connect the water outlet of the accumulator and the water return entrance itself. The user, to obtain hot water, will have to perform an opening and instantly a shutdown of gñfo to produce a flow cut, activating the recirculation. After the time necessary to heat the pipes will open the tap again obtaining hot water instantly. The invention proposed in this specification resembles this previous one in that in both the operation of a water recircuation system activated by the opening and closing of a water tap occurs. But the differences are many í among which as follows:
~ Los elementos constitutivos de ia instalación propuesta son más reducidos, comprendiendo tan sólo un circuito de agua caliente con bomba de recirculación de cualquier configuración, un flusostato, un termostato de contacto de tubería y un dispositivo de control  ~ The constituent elements of the proposed installation are smaller, comprising only a hot water circuit with recirculation pump of any configuration, a flusostato, a pipe contact thermostat and a control device
- El sistema propuesto es más sencillo, materializándose en un circuito electrónico que se conecta a un termostato de contacto de tubería de bajo coste y fácil instalación, un flusostato normalmente reutilizable por estar presente en la fuente de producción de agua caliente y una bomba de recircuiación, no comprendiendo más elementos, ya que no hacen falta acumuladores, ni sistemas de producción de agua caliente, ni otros sistemas para aprovechar el agua caliente sobrante del sistema de recircuiación.  - The proposed system is simpler, materializing in an electronic circuit that connects to a low-cost and easy-to-install pipe contact thermostat, a normally reusable flusostat for being present in the hot water production source and a recircuation pump , not understanding more elements, since no accumulators, hot water production systems, or other systems are needed to take advantage of the hot water left over from the recircuation system.
- El sistema propuesto se puede instalar en cualquier instalación de agua caliente con bomba de recircuiación sin necesidad de realizar cambio alguno en la instalación. No se requiere acumulador o sistema concreto de producción de agua callente y contempla cualquier combinación de éstos.  - The proposed system can be installed in any hot water installation with a recircuation pump without any change in the installation. No accumulator or concrete system of hot water production is required and contemplates any combination of these.
~ Ei sistema de la invención anterior se basa en la detección de la demanda de agua caliente por el corle de flujo de agua, podiendo eilo resultar en la práctica difícil de controlar, pues en instalaciones pequeñas es importante tener en cuenta ei golpe de ariete producido por el cierre de cualquier grifo, ya sea de agua caliente como de agua fría, activando dicho golpe de ariete momentáneamente los sensores de flujo y produciendo una falsa demanda, por lo que habría que detectar esta incidencia y tenerla en cuenta en ei circuito de control. En la solución propuesta esto está contemplado, pues el sistema se activa cuando se detecta flujo de agua (y no corte) y además este flujo se mantiene durante un cierto tiempo (que por defecto es de 2 segundos), Al funcionar de esta forma, si no se quiere que se ponga en marcha ei circuito de recirculación, se dispone de un cierto tiempo para rectificar (esto es, se ha abierto el grifo de agua caiiente cuando en realidad se quena fría) The system of the previous invention is based on the detection of the demand for hot water by the water flow line, which may result in the practice difficult to control, since in small installations it is important to take into account the water hammer produced by closing any tap, either hot water or cold water, activating said water hammer momentarily the flow sensors and producing a false demand, so this incidence should be detected and taken into account in the control circuit. In the proposed solution this is contemplated, because the system is activated when water flow is detected (and does not cut) and also this flow is maintained for a certain time (which by default is 2 seconds), By working in this way, if you do not want the recirculation circuit to start up, there is a certain amount of time to rectify (that is, the tap of the falling water has been opened when it actually feels cold)
~ Ahorro energético; En la solución propuesta se para la bomba de recirculación cuando el agua caliente llega al final de recorrido (normalmente situado a la entrada de la bomba de recirculación) o en un punto final de servicios, que reo tiene por qué ser el final de recorrido, sino que puede estar ubicado a continuación del grifo más alejado, con lo que se ahorra el calentamiento del tramo de tubería que va desde este punto a la entrada de la bomba. Dependiendo del sistema y de la complejidad se pondrá un termostato de tubería en un sitio o en otro. ~ Energy saving; In the proposed solution, the recirculation pump is stopped when the hot water reaches the end of the route (normally located at the entrance of the recirculation pump) or at an endpoint of services, which must be the end of the route, but it can be located next to the farthest faucet, which saves the heating of the pipe section that goes from this point to the pump inlet. Depending on the system and complexity, a pipe thermostat will be placed in one place or another.
- Economía: La instalación requiere de un termostato de contacto de tubería de fácil instalación y bajo coste, un fíusostaio, pudiéndose aprovechar el que lleva ia misma caldera, calentador o sistema de producción de calor o en el peor de ios casos se puede adquirir uno y añadirlo al sistema, y un dispositivo de control conectado a la bomba. El flusosia o tiene una importante pérdida de carga, por ta que el tiempo de recirculación varía mucho si se añaden más elementos con pérdidas de carga importantes, por lo que es aconsejable aprovechar los que hay. Este aprovechamiento se puede realizar con un circuito adicional en el que se añade un relé de doble salida, conectándose una de dichas salidas al circuito actual y la otra al circuito de control. - Economy: The installation requires an easy-to-install and low-cost pipe contact thermostat, a phytostat, being able to take advantage of the one that carries the same boiler, heater or heat production system or in the worst case one can be purchased and add it to the system, and a control device connected to the pump. Flusosia or has a significant loss of load, so that the recirculation time varies greatly if more elements with significant load losses are added, so it is advisable to take advantage of those that exist. This use can be made with an additional circuit in which a double output relay is added, one of these outputs being connected to the current circuit and the other to the control circuit.
En resumen, las soluciones propuestas son muy diferentes, aunque hayan sido diseñadas para un mismo objetivo y aunque la señal de activación sea la misma.  In summary, the proposed solutions are very different, although they have been designed for the same purpose and although the activation signal is the same.
Conclusiones: Como se desprende de la investigación realizada, ninguno de los documentos encontrados soluciona los problemas planteados como lo hace la invención propuesta. Conclusions: As can be seen from the research carried out, none of the documents found solves the problems posed as the proposed invention does.
DESCRIPCIÓN DE LA INVENCION DESCRIPTION OF THE INVENTION
El procedimiento para la regulación de un circuito de recirculación de agua caliente sanitaria consiste en que si la temperatura del punto de consumo de agua caliente es propia de agua fría, se activa la bomba durante un tiempo determinado. SI antes de alcanzar el tiempo límite se alcanza la temperatura propia de agua caliente en ei sensor de temperatura del punto de consumo, se desconecta ei sistem pues esto indica que el agua en todo el circuito está caliente. The procedure for the regulation of a domestic hot water recirculation circuit is that if the temperature of the hot water consumption point is typical of cold water, the pump is activated for a certain time. If, before reaching the time limit, the own hot water temperature is reached in the temperature sensor of the consumption point, the system is switched off because this indicates that the water in the entire circuit is hot.
Sí por el contrario se llega al tiempo límite y no se alcanza la temperatura de agua caliente, se desconecta el sistema pues ello implica que la temperatura del acumulador es baja o la caldera no funciona. En cualquier caso, ia bomba se desconecta al cabo de un tiempo programado. Para la puesta en práctica de dicho procedimiento se utiliza un circuito electrónico de control, constituido por un sensor de temperatura de agua y un fiusostato. Al abrir un grifo de agua caliente, se toma una señal del flusostato del circuito de agua, siendo dicho flusostato un elemento presente en las calderas y termos, pudiéndose aprovechar el que ya existe, y en caso de que no se encontrase instalado dicho fiusostatohabria que instalar uno en el circuito de agua caliente. If, on the other hand, the time limit is reached and the hot water temperature is not reached, the system is switched off as this implies that the temperature of the accumulator is low or the boiler does not work. In any case, the pump is disconnected after a programmed time. For the implementation of this procedure an electronic control circuit is used, consisting of a water temperature sensor and a phytostat. When opening a hot water tap, a signal is taken from the water circuit flusostat, said flusostat being an element present in the boilers and thermos, being able to take advantage of the one that already exists, and in case that said fiusostat would not be installed that install one in the hot water circuit.
El circuito descrito admite la entrada de 2 flusostatosindependientes, pudiendo requerir la entrada de señal del segundo flusostato de un circuito electrónico adicional, añadiendo en tai caso un relé al circuito. The circuit described admits the entry of 2 independent flusostatos, and may require the input of the second flusostato of an additional electronic circuit, adding in this case a relay to the circuit.
BREVE DESCRIPCIÓN DE LOS DIBUJOS BRIEF DESCRIPTION OF THE DRAWINGS
Para una mejor comprensión de la descripción se acompañan unos dibujos que representan una realización preferente de la presente invención. For a better understanding of the description there are attached drawings representing a preferred embodiment of the present invention.
Figura 1 : Representación gráfica del circuito electrónico Figura 2: Representación esquemática de funcionamientoFigure 1: Graphical representation of the electronic circuit Figure 2: Schematic representation of operation
Las referencias numéricas de las figuras corresponden a los siguientes elementos constitutivos de la presente invención: The numerical references of the figures correspond to the following constituent elements of the present invention:
1. Circuito electrónico de control 1. Electronic control circuit
2. Sensor de temperatura de agua  2. Water temperature sensor
3. Flusostato  3. Flusostato
4. Bomba  4. Bomb
5. Temporizado!  5. Timed!
8. Diodo  8. Diode
DESCRiPCIÓN DE UNA REAL ZACIÓN PREFERENTE DESCRiPTION OF A PREFERRED REAL ZATION
Una realización preferente de la presente invención se puede basar en un circuito electrónico de control (1 ), un sensor de temperatura de agua (2), un flusostato (3), temporizadores (5) y diodos (8) para controlar la redrcuiaeion desde ¡a bomba de agua caliente. Ai abrir un grifo de agua caliente, se toma una señal del flusostato (3) del circuito de agua, siendo dicho flusostato (3) un elemento presente en las calderas y termos, pudiéndose aprovechar el que ya existe, en caso de que no se encontrase instalado dicho flusostato (3), habría que instaiar uno en el circuito de agua caliente. Si la temperatura del punto de consumo de agua caliente a los dos segundos de estar abierto el grifo es propia de agua fría, se activa la bomba (4) durante un tiempo determinado. Si antes de alcanzar el tiempo límite se alcanza la temperatura propia de agua caliente en el sensor de temperatura (2) del punto de consumo, se desconecta el sistema pues esto indica que el agua en todo el circuito está caliente. A preferred embodiment of the present invention can be based on an electronic control circuit (1), a water temperature sensor (2), a flusostat (3), timers (5) and diodes (8) to control the redrawing from Hot water pump. When opening a hot water tap, a signal of the flusostato (3) of the water circuit is taken, said flusostato (3) being an element present in the boilers and thermos, being able to take advantage of the one that already exists, in case it is not if said flusostato (3) was installed, one would have to be installed in the hot water circuit. If the temperature of the hot water consumption point within two seconds of being opened, the tap is typical of cold water, the pump (4) is activated for a certain time. If, before reaching the time limit, the own hot water temperature in the temperature sensor (2) of the consumption point is reached, the system is switched off as this indicates that the water in the entire circuit is hot.
Si por el contrario se ¡lega al tiempo límite y no se alcanza la temperatura de agua caliente, se desconecta el sistema pues ello implica que la temperatura del acumulador es baja o la caldera no funciona. En cualquier caso, ia bomba (4)se desconecta al cabo de un tiempo programado. Ei circuito descrito admite la entrada de dos flusostatos (3) independientes, pudiendo requerir ia entrada de señal del segundo flusostato (3) de un circuito electrónico adicional, añadiendo en tal caso un relé al circuito. If, on the other hand, the time limit is reached and the hot water temperature is not reached, the system is switched off as this implies that the accumulator temperature is low or the boiler does not work. In any case, the pump (4) is disconnected after a programmed time. The described circuit admits the input of two independent flusostatos (3), and may require the signal input of the second flusostato (3) of an additional electronic circuit, adding in this case a relay to the circuit.

Claims

REIVINDICACIONES
1 ,- Procedimiento para la regulación de un circuito de recirculaeión de agua caliente sanitaria, caracterizado por realizarse en las siguientes etapas: 1, - Procedure for the regulation of a domestic hot water recirculation circuit, characterized by being carried out in the following stages:
- a) Al abrir un grifo de agua caliente un circuito electrónico {1 } toma una señal del ftusostato (3) del circuito de agua  - a) When an hot water tap is opened an electronic circuit {1} takes a signal from the phytostat (3) of the water circuit
- b) Si a ¡os dos o tres segundos la temperatura del punto de consumo de agua caliente es propia de agua fría, se activa una bomba {4} durante un tiempo determinado.  - b) If within two or three seconds the temperature of the hot water consumption point is typical of cold water, a pump {4} is activated for a certain time.
- c) Si antes de alcanzar el tiempo límite se alcanza la temperatura propia de agua caiiente en el sensor de temperatura (2) del punto de consumo, se desconecta el sistema.  - c) If the temperature of the falling water in the temperature sensor (2) of the consumption point is reached before reaching the time limit, the system is switched off.
~ d) Si el temporizador del circuito electrónico (1 ) llega al tiempo limite y no se alcanza la temperatura de agua caliente, se desconecta el sistema, indicando mediante leds que la temperatura del acumulador es baja o que la caldera no funciona.  ~ d) If the electronic circuit timer (1) reaches the time limit and the hot water temperature is not reached, the system is switched off, indicating by LEDs that the accumulator temperature is low or that the boiler does not work.
2 - Circuito electrónico de control (1 ) para la puesta en práctica del procedimiento anteriormente reivindicado, constituido por un sensor de temperatura de agua (2) en el punto de consumo, un flusostato (3) y un temporizador (5), asi como una bomba (4) y una pantalla de leds (8), conectados en un circuito de agua caliente sanitaria para su regulación. 2 - Electronic control circuit (1) for the implementation of the previously claimed procedure, consisting of a water temperature sensor (2) at the point of consumption, a flusostat (3) and a timer (5), as well as a pump (4) and a LED display (8), connected in a domestic hot water circuit for regulation.
PCT/ES2016/000009 2015-01-30 2016-01-27 Method for regulating a circuit for the recirculation of hot sanitary water, and electronic control circuit WO2016120508A1 (en)

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ESP201500076 2015-01-30
ES201500076A ES2581061B1 (en) 2015-01-30 2015-01-30 Procedure for the regulation of a sanitary hot water recirculation circuit and electronic control circuit.

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4936289A (en) * 1989-02-21 1990-06-26 Peterson George A Usage responsive hot water recirculation system
US5042524A (en) * 1989-09-29 1991-08-27 Metlund Enterprises Demand recovery hot water system
US20090145490A1 (en) * 2007-08-07 2009-06-11 Donald Gregory Kershisnik Water conservation / hot water recirculation system utilizing timer and demand method
US20120271465A1 (en) * 2011-04-21 2012-10-25 Derek Zobrist Energy management system and method for water heater system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4936289A (en) * 1989-02-21 1990-06-26 Peterson George A Usage responsive hot water recirculation system
US5042524A (en) * 1989-09-29 1991-08-27 Metlund Enterprises Demand recovery hot water system
US20090145490A1 (en) * 2007-08-07 2009-06-11 Donald Gregory Kershisnik Water conservation / hot water recirculation system utilizing timer and demand method
US20120271465A1 (en) * 2011-04-21 2012-10-25 Derek Zobrist Energy management system and method for water heater system

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