WO2010037887A1 - Installation et procédé permettant d'économiser l'eau - Google Patents

Installation et procédé permettant d'économiser l'eau Download PDF

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Publication number
WO2010037887A1
WO2010037887A1 PCT/ES2009/070408 ES2009070408W WO2010037887A1 WO 2010037887 A1 WO2010037887 A1 WO 2010037887A1 ES 2009070408 W ES2009070408 W ES 2009070408W WO 2010037887 A1 WO2010037887 A1 WO 2010037887A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
water circuit
hot water
cold water
circuit
Prior art date
Application number
PCT/ES2009/070408
Other languages
English (en)
Spanish (es)
Inventor
Josep Roura Alemany
Original Assignee
Disesta-Jp, S.L.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from ES200802810A external-priority patent/ES2319081B1/es
Application filed by Disesta-Jp, S.L. filed Critical Disesta-Jp, S.L.
Publication of WO2010037887A1 publication Critical patent/WO2010037887A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B1/00—Methods or layout of installations for water supply
    • E03B1/04—Methods or layout of installations for water supply for domestic or like local supply
    • E03B1/048—Systems for collecting not used fresh 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
    • F24D17/00—Domestic hot-water supply systems
    • F24D17/0078—Recirculation systems
    • 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

Definitions

  • the present invention is intended to disclose an installation, a device and a method for saving water.
  • the present invention is intended to increase water savings and comfort, especially in running water consumption facilities (both existing and newly built) that have hot and cold water circuits and common consumption points for both circuits
  • US 6098213 and US 4924536 disclose an energy saving device and a running water installation for the same purpose in which hot water that does not reach the required temperature is diverted to a specific auxiliary filling circuit of the tank of a toilet.
  • Document CA 2252350 discloses a water consumption installation in which hot water that does not reach the required temperature is diverted to an intermediate tank in the cold water circuit, which also requires the installation of long pipes from each point. consumption up to the intermediate deposit, which makes it difficult to apply to existing facilities. On the other hand, obtaining an adequate pressure in the cold water circuit requires the placement of an excessively high intermediate tank, and no energy use is made of the hot water sent to the tank.
  • the present invention has the following objectives: - to have hot water without contact with cold water, achieve significant and simultaneous water and energy savings, contribute to the current environmental policy, without presenting the aforementioned drawbacks. All this in an installation that presents the minimum variations of operation with respect to a normal installation.
  • the present invention consists of a method for saving water in installations of drinking water of the type comprising cold water and hot water circuits and at least one common consumption point, comprising a transfer of water from the hot water circuit to the cold water circuit, through the point of consumption, prior to the consumption of hot water, during a time such that, at the end of the transfer, the water of the hot water circuit at the point of consumption has the required temperature.
  • the water transferred to the cold water circuit may be recirculated to pass through the hot water generator before the consumption of hot water or subsequently used, thus achieving a significant water saving.
  • the realization of the transfer of water through the point of consumption makes the provision of specific pipes for the use of water unnecessary.
  • the of the present invention comprises a water transfer phase of an area of the hot water circuit located upstream of the hot water generator to the cold water circuit when a consumption of water from the cold water circuit is requested from the point of consumption common.
  • the subsequent use of the water transferred to the cold water circuit may comprise an intermediate storage and / or a direct transfer of the stored water to a consumption point of the installation through the installation itself.
  • the transfer of water from the cold water circuit to the hot water circuit will be carried out at a point in the installation upstream of a hot water generator located in the hot water circuit of the installation.
  • said transfer of an area of the hot water circuit located upstream from the hot water generator to the cold water circuit occurs when the cold water circuit pressure drops below a predetermined value, by opening a valve.
  • the present invention consists of a running water consumption installation, of the type comprising cold water and hot water circuits, the hot water circuit comprising a hot water generator, and at least one common consumption point for both circuits, in which the cold water circuit operates at a lower pressure than the hot water circuit, said installation having a device located at a common consumption point for hot and cold water circuits, which comprises a user-operated control that allows the passage of water from the hot water circuit to the cold water circuit through the consumption point, and located means in the cold water circuit for the evacuation of the volume of water coming from the hot water circuit.
  • the installation is characterized in that a bypass with a governed valve is arranged between the cold water circuit and an area of the hot water circuit before the hot water generator.
  • the valve is governed by a pressure switch that sends an opening order when the cold water circuit pressure drops below a certain value.
  • the cold water and hot water circuits have a common power point.
  • both the cold water circuit and the hot water circuit have two regulators located downstream of the common supply point, the pressure of the hot water circuit regulator being greater than that of the water regulator.
  • the evacuation means will comprise devices for closing the water inlet to the cold water circuit, and for opening the opening mechanism. evacuation, and pressure sensitive means in both circuits.
  • said evacuation means will comprise temperature sensitive means that regulate the opening and closing time of said opening devices of the evacuation mechanism and closing of the cold water circuit.
  • the means for evacuating the volume of water from the hot water circuit of the installation comprise means for transferring water from the cold water circuit to a point of the installation upstream of the hot water generator of the installation, without intermediate water storage.
  • said water transfer means from the cold water circuit to the hot water circuit will comprise a pump and a check valve.
  • the pressure-sensitive means that determine the operation or shutdown of said pump also send the said opening order to the bypass valve that connects the cold water circuit with an area of the water circuit. hot before the hot water generator. In this way, additional savings can be achieved in terms of the investment costs of the installation.
  • preferred embodiments of said device located at the points of consumption will be characterized by being attachable to the faucets known in the market.
  • the communication time between the hot and cold water circuit may be determined by temperature-sensitive means, or it may be fixed, being regulated during the installation of the device.
  • some drawings of a preferred embodiment of the present invention are attached by way of explanatory but not limiting example.
  • Fig. 1 is a diagram of a water consumption installation according to the present invention.
  • the present invention is based on an installation of running water consumption of known type which in the particular case of the example shown in Figure 1 corresponds to a running water installation of a housing, of known type, composed of a first common section -1 - with a stopcock -2-, a hot water circuit -3- with a pressure regulator of said circuit -5- and with boiler system -31-, a cold water circuit -4- with a regulator of the pressure of said circuit -6- and at least one consumption point -7-, in this case a tap for hot and cold water.
  • the installation object of the present invention is also characterized in that the cold water circuit -4- is, in a situation of lack of consumption, at a pressure lower than that of the hot water circuit -3-.
  • this is achieved by a pressure regulator -6- located at the beginning of the cold water circuit -4- and another pressure regulator -5- located at the beginning of the water circuit hot -3-, regulated at different pressures.
  • the circuit of cold water -4- has means to evacuate a volume of water that can come through a saving device -10- located at the point of common consumption -7-. Said means must have start-up means when the device -10- allows a volume from the hot water circuit -3- to enter the cold water circuit -4-. In the example shown, this is achieved by a solenoid valve -8-, governed by a pressure-sensitive mechanism -9-, for example a pressure switch.
  • the pressure switch -9- also governs the pump -13-, whose purpose is to transfer water from the cold water circuit to the hot water circuit prior to hot water consumption, until the water acquires the proper temperature.
  • the pump -13- is activated and the valve -8- closes when the pressure value at the pressure switch control point -9- exceeds a certain value.
  • the pressure switch -9- can also be used to activate the solenoid valve -8'-.
  • the valve -8'- is normally closed. However, when the pressure detected by the pressure switch -9- falls below a second setpoint value lower than the regulating pressure value of the regulator -6- of the cold water circuit -4-, it sends an opening order to the valve -8'-, which opens a direct bypass between the hot water circuit -3- and the cold water circuit -4-, joining a point upstream of the hot water generator -31- with a point upstream of the point of consumption -7-.
  • the hot water circuit -3- operates at a pressure greater than the cold water circuit -4-, this causes that, when an exclusively cold water consumption is required, the valve -8'- is opened and with it its bypass, so that the tap -7- reaches cold water from the hot water circuit -3- and therefore both at the same pressure as the hot water coming from the hot water circuit when a hot water consumption is requested.
  • the objective achieved is that the user does not observe a pressure difference between hot and cold water.
  • it can optionally be provided that the valve -8- of the cold water circuit is closed in the same order as the valve -8'- of the bypass is opened.
  • the pressure switch - has a higher setpoint and a lower value. If pressure switches with a single setpoint value are used, the use of two pressure switches will be necessary.
  • the operation procedure of the installation includes the water transfer steps from the hot water circuit -3- to the cold water circuit -4- prior to the consumption of hot water and a subsequent use of the volume of water transferred to the water circuit cold water -4-.
  • the installation of the example shown in Figure 1 implements the passage of water transfer from the hot water circuit -3- to the cold water circuit -4- through the use of the device savings -10- located at the points of consumption (as well as by the difference in pressures between circuits -3- and -4-), and achieves the aforementioned water transfer.
  • the user When the user requires hot water, he will activate the device -7-, for example, by pressing the -71- button.
  • the device -10- will allow the passage of water from the hot water circuit -3- to that of cold water -A- during the time marked by the temperature-sensitive mechanisms of the device -10- (for example with a mechanism sensitive to the water temperature from the hot water circuit).
  • the pressure switch also operates the pump -13- which causes a recirculation of the water partially heated but with a temperature below the required one. This causes said water to be circulated again through the boiler, with the consequent energy savings.
  • the tap opening -7- causes a pressure drop in circuit -4- below the lower setpoint value, which triggers the pressure switch -9-.
  • This second signal from the pressure switch -9- and opens the bypass valve -8'-, which causes the water to go to the point of consumption -7- through the hot water circuit, and by-pass, Without being heated.
  • the user does not notice the pressure difference between the cold water circuit -4- and the hot water circuit -3-.
  • the hot water circuits -3- and cold water circuits -4- are connected, which causes an increase in the cold water circuit pressure - 4-.
  • the pressure switch -9- sends the valve closing signal -8- and starts the pump -13-.
  • the water temperature at the point of consumption -7- is that required, the hot and cold water circuits are no longer connected.
  • the operation of the pump -13- reduces the pressure below the pressure level of the pressure switch -9-, which stops the pump -13- and opens the valve -8-.
  • both the hot water circuit -3- and the cold water circuit -4- have their own pressure regulator -5-, -6- in the vicinity of the common supply point -1- of said circuits This allows both regulators -5-, -6- to operate under the same inlet pressure conditions and, thus, a greater regularity range is allowed than with other arrangements, for example, with a regulator in the common inlet zone -1- and another in the cold water circuit -4-.
  • the circuit is completed with non-return valves -14- in those places where it is considered necessary or recommended. In the present example, two have been placed at the connection point of the first bypass -13-, -9- with the hot water circuit -3-.
  • a water receiving tank from the hot water circuit -3- could be available through the saving device -10-, said water being able to be subsequently reintegrated into the water circuit.
  • the invention is not limited to the individual installation shown in the figure, the installation being able to be applied, for example, to installations in homes that have centralized hot water, or even to installations of buildings with centralized circuits of cold water and hot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

La présente invention concerne une installation de consommation d'eau courante, du type comprenant des circuits d'eau froide et d'eau chaude, ledit circuit d'eau chaude comprenant un générateur d'eau chaude, et au moins un point de consommation commun pour les deux circuits, le circuit d'eau froide fonctionnant à une moindre pression que le circuit d'eau chaude. Cette installation est pourvue d'un dispositif situé au niveau d'un point de consommation commun pour les circuits d'eau froide et chaude et de moyens situés dans le circuit d'eau froide pour évacuer le volume d'eau provenant du circuit d'eau chaude, ladite installation étant caractérisée par le fait que, entre le circuit d'eau froide et une zone du circuit d'eau chaude située avant le générateur d'eau chaude, se trouve une dérivation équipée d'une vanne commandée.
PCT/ES2009/070408 2008-10-03 2009-09-29 Installation et procédé permettant d'économiser l'eau WO2010037887A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP200802810 2008-10-03
ES200802810A ES2319081B1 (es) 2004-06-15 2008-10-03 Instalacion y procedimiento para ahorro de agua.

Publications (1)

Publication Number Publication Date
WO2010037887A1 true WO2010037887A1 (fr) 2010-04-08

Family

ID=42074267

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ES2009/070408 WO2010037887A1 (fr) 2008-10-03 2009-09-29 Installation et procédé permettant d'économiser l'eau

Country Status (1)

Country Link
WO (1) WO2010037887A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982623A1 (fr) * 2011-11-14 2013-05-17 Electricite De France Systeme de distribution d'eau ameliore
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.
ES2722104A1 (es) * 2018-02-07 2019-08-07 Water Saver S L Conjunto sanitario y procedimiento de funcionamiento del mismo
WO2023007053A1 (fr) * 2021-07-29 2023-02-02 Universitat Politècnica De València Dispositif d'économie d'eau pour installations d'eau chaude sanitaire

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697614A (en) * 1985-09-10 1987-10-06 Powers Debora L Water conservation system
US4924536A (en) * 1989-06-05 1990-05-15 Houghton Connie H System of conserving water in a building
US5105846A (en) * 1991-03-18 1992-04-21 Britt Paul E Water conserving purge system for hot water lines
US5452740A (en) * 1993-12-16 1995-09-26 Bowman; Gerald E. Water conservation system
CA2252350A1 (fr) * 1998-11-04 2000-05-04 Israel Karmel Appareil pour economiser l'eau
ES2219198A1 (es) * 2004-06-15 2004-11-16 Josep Roura Alemany Instalacion y procedimiento para ahorro de agua.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697614A (en) * 1985-09-10 1987-10-06 Powers Debora L Water conservation system
US4924536A (en) * 1989-06-05 1990-05-15 Houghton Connie H System of conserving water in a building
US5105846A (en) * 1991-03-18 1992-04-21 Britt Paul E Water conserving purge system for hot water lines
US5452740A (en) * 1993-12-16 1995-09-26 Bowman; Gerald E. Water conservation system
CA2252350A1 (fr) * 1998-11-04 2000-05-04 Israel Karmel Appareil pour economiser l'eau
ES2219198A1 (es) * 2004-06-15 2004-11-16 Josep Roura Alemany Instalacion y procedimiento para ahorro de agua.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982623A1 (fr) * 2011-11-14 2013-05-17 Electricite De France Systeme de distribution d'eau ameliore
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.
ES2722104A1 (es) * 2018-02-07 2019-08-07 Water Saver S L Conjunto sanitario y procedimiento de funcionamiento del mismo
WO2023007053A1 (fr) * 2021-07-29 2023-02-02 Universitat Politècnica De València Dispositif d'économie d'eau pour installations d'eau chaude sanitaire

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