WO2010103560A1 - Système thermostatique à commande électronique pour mélanger de l'eau chaude et de l'eau froide - Google Patents

Système thermostatique à commande électronique pour mélanger de l'eau chaude et de l'eau froide Download PDF

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Publication number
WO2010103560A1
WO2010103560A1 PCT/IT2010/000105 IT2010000105W WO2010103560A1 WO 2010103560 A1 WO2010103560 A1 WO 2010103560A1 IT 2010000105 W IT2010000105 W IT 2010000105W WO 2010103560 A1 WO2010103560 A1 WO 2010103560A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
mixing chamber
solenoid valves
temperature
thermostatic system
Prior art date
Application number
PCT/IT2010/000105
Other languages
English (en)
Inventor
Giancarlo Tedoldi
Original Assignee
Nuova Galatron S.R.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
Application filed by Nuova Galatron S.R.L. filed Critical Nuova Galatron S.R.L.
Publication of WO2010103560A1 publication Critical patent/WO2010103560A1/fr

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/13—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
    • G05D23/1393—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures characterised by the use of electric means

Definitions

  • This invention relates, in general, to the faucet sector and concerns, in particular, a system x for mixing hot and cold water with adjusting the temperature and the rate of flow of the water.
  • mixing valves as devices for the mixing of at least two fluid substances is by this time well known and widespread.
  • a mixing valve is used to mix two types of water coming from two different water supply systems, typically hot and cold water, and to supply from the outlet, only cold water, or better mixed water at a given temperature, that can be pre-set.
  • These mixing valves can be both the manual type, where the user, by adjusting a control lever can set the temperature and flow as is needed from the outlet, and the thermostat type, in which a thermostatic system arranges to automatically maintain the temperature of the water flowing out to be constant independent of the two hot and cold water flows at the input, by varying the mixing ratios taking into account that the rate of flow of the water can vary according to the change in pressure of the network.
  • the adjustment of the temperature in this second type of mixing valves is controlled by devices that include a bulb sensitive to the heat which, by expanding and contracting according to the variation in temperature of the fluid flowing through a mixing chamber, varies, by the movement of a regulator, the heat ratios between the flows of the fluids entering and consequently the temperature of the mixed fluid in exit.
  • the faucet sector is moving towards, and is however looking for, systems for mixing hot and cold water by which the adjustments can also be controlled at a distance by buttons and possibly viewed on a display and which necessarily must be interfaced with electronic systems and maintaining furthermore and preferably the possibility also of adjusting manually.
  • thermostatic valves of the so called electronic type have already been proposed, that use as a means of adjustment an auger type of valve operated by a step by step motor where, however, -the latter limits its action at, the command of an obturator in the same way as what happens in manual systems.
  • the aim of this invention is, on the one hand, to adhere to the present requests of the market as regards to mixing systems of hot and cold water electronically controllable and, on the other hand, to propose a hot and cold water mixing system for faucets able in actual fact to adjust the temperature and carrying capacity of the two types of starting out water, both before and after its mixing, to maintain the temperature of the mixed water delivered stable.
  • Another aim is to propose an electronically controlled automatic system for mixing two fluids, able to instantly respond to the variations in temperature of the two types of hot and cold water also in case of a variation in the capacity or temperature of the fluid being received and also to function in the absence of electric input from the grid.
  • thermostatic mixing system of hot and cold water in the field of faucets according to claim 1 and therefore by taking advantage of temperature and capacity sensors in connection with a microprocessor configured to receive signals coming from said sensors and to control two proportional solenoid valves to control the flows of hot water to be mixed.
  • the system of the invention is controlled to maintain the temperature of the mixed water delivered stable: both in case the temperature of one or the other of the two flows of water in input varies (due for example, in the case of the hot water, to-Hi the discontinuous turning on of a heating system and- .in the case of cold water, due to the climatic conditions of the ambient), and in case there is a variation in the pressure at input of the one or the other of the two flows of water (due for example to the opening of another faucet in the hydraulic system), to find a point of balance between the two flows of water that correspond in fact to the temperature wanted and set to maintain this temperature over a period of time.
  • the system of the invention is the source of numerous advantages that can be reassumed at least as follows: easy to install and personalization in relation to its uses; easy to adjust and stabilize over a period of time in the mixing of the two fluids and in the temperature of the mixed fluid delivered; a greater volume of water delivered in less space; less wear in time, as there is no need for components made of materials subject to wear with use, like ceramics, plastic and the like; greater practicality for use for those less able; improved aesthetics; easy to manage with other electronic appliances, such as telephones, remote controls, computers, etc.; and also the possibility of using the thermostatic system both as regards to each individual faucet, and as a "centralized" device at the service of all the sanitary equipment, for example, in the bathroom.
  • Fig. 1 is a generally speaking hydraulic scheme of the mixing system including an electronic thermostatic mixer group;
  • Fig. 2 is a functional scheme of the thermostatic group in Fig.1 complete with an exit solenoid valve, bistable or not;
  • Fig. 3 Shows a view of a possible several way diverting control valve to be used in combination with the mixer group in Fig. 2; and
  • Fig. 4 is a view as in Fig. 2, but implemented for the delivery of mixed water to several uses. Detailed Description of the Invention
  • the mixing system proposed here comprises an electronic thermostatic group 11 with an input 12 connected to a hot water delivery pipe, an input 13 connected to a cold water delivery pipe and an outlet 14 for hot, cold or mixed water towards at least one application at a required temperature and delivery capacity.
  • the electronic thermostatic group 11 basically comprises two proportional solenoid valves, respectively 15, 15', connected, in the input, to the inputs of the hot water 12 and the cold water 13 and, in exit, to a mixer chamber 16 in communication in turn with a possible means of control of the delivery of the mixed water towards one or more applications.
  • a flowmeter 18, 18' and a temperature sensor 19, 19' are provided between each of the solenoid valves 15, 15' and the mixer chamber 16 a flowmeter 18, 18' and a temperature sensor 19, 19' designed to detect, respectively, the flowcapacity and temperature of the.water in exit from said solenoid valves and to emit corresponding electric signals.
  • a flowmeter 20 and a temperature sensor 21 designed to detect the capacity and temperature of the mixed water and to send corresponding signals towards an electronic management unit 22.
  • a safety solenoid valve 115 can be provided for closing the system in case of an emergency, for example should there be faults in the proportional solenoid valves.
  • This management unit 22 includes an electronic control board with conversion systems A/D and a microprocessor that controls the opening and closing, partial or total of the solenoid valves 15, 15', individually, in answer to the capacity and temperature signals sent by the flowmeters and by the temperature sensors each associated with the solenoid valves and at the exit of the mixer chamber. These units will also have means, - such as buttons and a possible display, nor shown - so as to be able to set up and present the capacity and temperature levels of the required mixed water.
  • the management unit 22 that is to say the microprocessor, quickly intervenes in answer to the signals sent by the flowmeters, correspondingly adjusting the opening/closing of one and/or the other solenoid valve so as to reset and maintain the capacity and temperature parameters of the delivered mixed water constant, by adjusting the mixer ratios of the two flows of water. ⁇ . -. •, - , -.*.
  • the management unit will intervene to adjust opening/closing of the solenoid valves also in answer to the temperature signals coming from each temperature sensor.
  • the system can be integrated in a single body to facilitate the installation in use and given its position in the shower, bathrooms or the like, it will have to be prepared to function at a low tension, 9-12 Volt, and be provided with a buffer battery 23, which, should there be a drop in the network feed, it will however provide autonomous operating, keeping the proportional solenoid valves open at least for a sufficient length of time to complete a shower for example.
  • a possible delivery control means of the water exiting from the electronic thermostatic group 11 towards the applications which could be a shower head, possible lateral hand showers, massage jets, etc, provided in a shower cabin, it could be made up of a solenoid valve 17 bistable or not as shown in Fig. 2, or of a flow deviator 17' -Fig. 3.
  • This may have a central hole, 24 to receive mixed water editing from the thermostatic group and lateral delivery holes 25 of the water and other uses by means of an internal deviator - not shown - controlled by a knob 26 and configured to put the central hole from time to time in communication selectively with each of the holes.
  • a same electronic thermostatic group 11 can be adopted to deliver the water to different sanitary equipment, such as - a bathroom 27, a shower 28, a washbasin -29, a bidet 30 as shown ⁇ in Fig. 4, connecting to the outlet 14 of the group the same number of solenoid valves on/of 31 that open when required by the user by means of push buttons, when the is sanitary equipment is used.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Domestic Plumbing Installations (AREA)
  • Control Of Temperature (AREA)

Abstract

L'invention concerne un système thermostatique à commande électronique pour mélanger au moins deux fluides, en particulier de l'eau chaude et de l'eau froide. Le système comprend une première électrovanne (15) reliée à l'entrée d'un conduit amenant de l'eau chaude, une seconde électrovanne (151) reliée à l'entrée d'un conduit amenant de l'eau froide, et une chambre de mélange (16) conçue pour recevoir en entrée l'eau provenant des électrovannes et connectable en sortie à au moins un dispositif d'utilisation. Entre chacune des électrovannes (15, 15') et la chambre de mélange (16) un capteur de débit (18, 18') et un capteur de température (19, 19") sont fournis et conçus pour détecter, respectivement, le débit et la température de l'eau s'écoulant de chacune des électrovannes et pour transmettre des signaux électriques correspondants en retour à une unité de commande électronique (22) configurée pour commander l'ouverture/la fermeture desdites vannes individuellement et pour modifier le rapport d'eau chaude et froide mélangée de façon à maintenir constante la température en sortie de la chambre de mélange.
PCT/IT2010/000105 2009-03-10 2010-03-10 Système thermostatique à commande électronique pour mélanger de l'eau chaude et de l'eau froide WO2010103560A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000041A ITBS20090041A1 (it) 2009-03-10 2009-03-10 Sistema termostatico a controllo elettronico per la miscelazione di acqua calda e fredda
ITBS2009A000041 2009-03-10

Publications (1)

Publication Number Publication Date
WO2010103560A1 true WO2010103560A1 (fr) 2010-09-16

Family

ID=41339251

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2010/000105 WO2010103560A1 (fr) 2009-03-10 2010-03-10 Système thermostatique à commande électronique pour mélanger de l'eau chaude et de l'eau froide

Country Status (2)

Country Link
IT (1) ITBS20090041A1 (fr)
WO (1) WO2010103560A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105992915A (zh) * 2014-02-12 2016-10-05 松下知识产权经营株式会社 热水和冷水混合装置
WO2020098846A1 (fr) * 2018-11-13 2020-05-22 Jaroslav Dub Régulateur, en particulier pour robinets

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756030A (en) * 1987-09-23 1988-07-12 Juliver Steven J Bathroom controller
US6286764B1 (en) * 1999-07-14 2001-09-11 Edward C. Garvey Fluid and gas supply system
DE10241303A1 (de) * 2002-09-04 2004-03-18 Grohe Water Technology Ag & Co. Kg Wassermischeinrichtung
WO2009013366A1 (fr) * 2007-07-20 2009-01-29 Lopez Rodriguez Daniel Appareil électronique compact de conditionnement d'eau utilisé au niveau d'un point de consommation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4756030A (en) * 1987-09-23 1988-07-12 Juliver Steven J Bathroom controller
US6286764B1 (en) * 1999-07-14 2001-09-11 Edward C. Garvey Fluid and gas supply system
DE10241303A1 (de) * 2002-09-04 2004-03-18 Grohe Water Technology Ag & Co. Kg Wassermischeinrichtung
WO2009013366A1 (fr) * 2007-07-20 2009-01-29 Lopez Rodriguez Daniel Appareil électronique compact de conditionnement d'eau utilisé au niveau d'un point de consommation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105992915A (zh) * 2014-02-12 2016-10-05 松下知识产权经营株式会社 热水和冷水混合装置
EP3106764A4 (fr) * 2014-02-12 2017-03-15 Panasonic Intellectual Property Management Co., Ltd. Mélangeur d'eau chaude et froide
US10191500B2 (en) 2014-02-12 2019-01-29 Panasonic Intellectual Property Management Co., Ltd. Hot and cold water mixing device
WO2020098846A1 (fr) * 2018-11-13 2020-05-22 Jaroslav Dub Régulateur, en particulier pour robinets

Also Published As

Publication number Publication date
ITBS20090041A1 (it) 2010-09-11

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