EP4121477A1 - Élément de matériau extensible pour mitigeur thermostatique - Google Patents

Élément de matériau extensible pour mitigeur thermostatique

Info

Publication number
EP4121477A1
EP4121477A1 EP21707232.1A EP21707232A EP4121477A1 EP 4121477 A1 EP4121477 A1 EP 4121477A1 EP 21707232 A EP21707232 A EP 21707232A EP 4121477 A1 EP4121477 A1 EP 4121477A1
Authority
EP
European Patent Office
Prior art keywords
expansion
mixing valve
expansion material
expansion element
thermostatic mixing
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.)
Pending
Application number
EP21707232.1A
Other languages
German (de)
English (en)
Inventor
Ole Benedikt Kostorz
Björn Riedel
Jens REUNERT
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.)
Grohe AG
Original Assignee
Grohe AG
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 Grohe AG filed Critical Grohe AG
Publication of EP4121477A1 publication Critical patent/EP4121477A1/fr
Pending legal-status Critical Current

Links

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
    • G05D23/1306—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids
    • G05D23/132—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element
    • G05D23/134—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element measuring the temperature of mixed fluid
    • G05D23/1346—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element measuring the temperature of mixed fluid with manual temperature setting means
    • G05D23/1353—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for liquids with temperature sensing element measuring the temperature of mixed fluid with manual temperature setting means combined with flow controlling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/061—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element
    • F03G7/06112—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using the thermal expansion or contraction of enclosed fluids
    • F03G7/06113—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element using the thermal expansion or contraction of enclosed fluids the fluids subjected to phase change
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
    • F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
    • F03G7/061—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element
    • F03G7/0616—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like characterised by the actuating element characterised by the material or the manufacturing process, e.g. the assembly
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths
    • E03C1/042—Arrangements on taps for wash-basins or baths for connecting to the wall

Definitions

  • the present invention relates to an expansion element for a thermostatic valve and / or thermostatic mixing valve, a thermostatic mixing valve for a sanitary fitting and a sanitary fitting with a corresponding thermostatic mixing valve.
  • the expansion element can, for example, keep a temperature of a liquid mixed by the thermostatic mixing valve (essentially) constant.
  • Sanitary fittings are used, in particular, to provide the liquid, in particular water, as required in a wash basin, a sink, a shower or a bathtub.
  • Known expansion elements have an expansion material that expands as a function of an ambient temperature of the expansion element.
  • the expansion material can, for example, be wax.
  • copper powder or expanded graphite for example, to the expansion material.
  • a thermostatic valve opens or closes a fluid line, a thermostatic mixing valve mixes two fluids or fluid flows in such a way that a mixed fluid with a target temperature is emitted.
  • the object of the invention is therefore to at least partially solve the problems described with reference to the prior art and, in particular, to provide an expansion element for a thermostatic mixing valve which has a particularly high reaction speed.
  • a thermostatic mixing valve for a sanitary fitting is to be specified, the expansion element of which has a particularly high reaction speed.
  • a Sanitary fittings are specified whose thermostatic mixing valve has an expansion element with a particularly high reaction speed.
  • thermoelectric mixing valve which has an expansion material which comprises at least one additive from the following group: synthetic graphite,
  • the expansion element is in particular an actuator and / or a final control element, by means of which a change in the ambient temperature of the expansion element can be converted into an (actuating) movement proportional to the change in the ambient temperature.
  • the expansion element has an expansion material, which can in particular be wax, hard paraffin, alcohol or oil or a mixture of the substances mentioned.
  • the expansion material is arranged in the expansion element in particular in such a way that the expansion material is at least partially separated from the surroundings of the expansion element only by an outer wall of the expansion element.
  • the outer wall of the expansion element consists in particular at least partially of metal, for example stainless steel or copper or alloys thereof, and / or has a high thermal conductivity of, for example, at least 100 W / (mx K) (Watts per meter and Kelvin) at a temperature of 20 ° C (Celsius). Furthermore, the outer wall preferably has a wall thickness of 0.2 mm (millimeters) to 2 mm. It has been shown that such wall thicknesses offer a good compromise between mechanical stability and thermal properties (thermal conductivity and thermal mass of the outer wall). When the ambient temperature changes, a volume of the expansion material changes.
  • the expansion material When the ambient temperature rises, the expansion material expands, so that its volume increases, and when the ambient temperature falls, the expansion material shrinks, so that its volume is reduced.
  • the changing volume of the expansion material leads to the (adjusting) movement of the expansion material element.
  • the expansion material includes at least one additive.
  • the additive thus increases a reaction rate of the expansion element.
  • the additive is in particular added to the expansion material during the manufacture of the expansion element.
  • the additive can in particular be designed in powder form and / or in particulate form. This enables a (essentially) uniform distribution of the additive in the expansion material.
  • the expansion material can contain other, in particular chemical, substances that “keep the additive in solution” in the expansion material and / or prevent the additive from separating out in the expansion material.
  • the additive is synthetic graphite, highly conductive graphite with a thermal conductivity of at least 350 W / (mx K) and / or boron nitride.
  • the high-conductivity graphite can be graphite, which is made from natural graphite and, in particular, is always present as graphite in the manufacturing process.
  • the highly conductive graphite can in particular not be expanded graphite or expandable graphite.
  • synthetic graphite is made from carbon-rich raw materials (artificial) that are not present in graphite form, which in particular have a graphitizable basic structure or in particular can be converted into synthetic graphite.
  • the starting materials can be, for example, petroleum coke, pitch coke or anthracite.
  • the starting materials are in the absence of air at temperatures of in particular 2,500 ° C to 3,000 ° C graphitized.
  • the synthetic graphite in particular has a purity or a mass fraction of carbon of 99.5% to 99.9995%.
  • the synthetic graphite preferably has a thermal conductivity of 1700 W / (mx K) to 1850 W / (mx K).
  • the highly conductive graphite is, in particular, very finely ground natural flake graphite with at least 98% carbon content and a particle size of d50 approx. 45 ⁇ m
  • the boron nitride is a boron-nitrogen compound.
  • the boron nitride preferably has a thermal conductivity of at least 350 W / (m ⁇ K).
  • Boron nitrite is distinguished from highly conductive and synthetic graphite, among other things, in that it is not electrically conductive. This makes it possible, especially when using a non-electrically conductive outer wall, to provide an electrically non-conductive actuator which offers increased user safety against electric shocks.
  • the synthetic graphite, the highly conductive graphite and the boron nitride have a common property of very high thermal conductivity.
  • the additive therefore improves the thermal conductivity of the expansion material and thus the reaction rate of the expansion element.
  • the expansion material can contain a lower mass fraction of the additive with the same reaction rate. This can reduce the cost of the expansion element.
  • the expansion element can be made smaller with the same change in volume of the expansion material (with a change in the ambient temperature of, for example, 1 ° C) or with the same size of the expansion element, the expansion material can have a larger change in volume (with a change in the ambient temperature of, for example, 1 ° C). sen.
  • a mass fraction of the at least one additive in the expansion material can be BO% to 80%, in particular 55% to 80%, in particular 60% to 70%.
  • the at least one additive can have an average particle size D50 of 0.4 miti (micrometers) to 550 miti.
  • the at least one additive can have a mean particle size D50 of 0.4 miti (micrometers) to 550 miti.
  • the at least one additive can have an average particle size D50 of 0.4 ⁇ m (micrometers) to 550 ⁇ m.
  • the expansion material can be arranged in a housing of the expansion element.
  • the housing consists in particular at least partially of metal and / or has a high thermal conductivity of, for example, at least 100 W / (m ⁇ K) (watts per meter and Kelvin) at a temperature of 20 ° C (Celsius).
  • the housing preferably has a wall thickness of 0.5 mm (millimeters) to 2 mm.
  • the housing can in particular be formed in a pot-shaped manner.
  • a working piston of the expansion element can be driven by the expansion material. This can mean in particular that a change in volume of the expansion material leads to a movement of the working piston, in particular a linear movement.
  • the working piston is in particular movably arranged in a guide opening of a closure element of the housing. In the event of an expansion or enlargement of the volume of the expansion material, the working piston is in particular at least partially moved out of the guide opening. In the event of a shrinkage or a reduction in the volume of the expansion material, the working piston can be moved at least partially into the guide opening, in particular by means of a return spring.
  • the working piston is in particular cylindrical and / or pin-shaped.
  • a membrane can be arranged between the expansion material and the working piston.
  • the membrane can in particular be designed to be flexible and / or clamped between the housing and the closure element of the housing.
  • the membrane can in particular prevent the expansion material from exiting the housing via the guide opening of the closure element. At the same time, the membrane enables the working piston to be adjusted by the expansion material.
  • a thermostatic mixing valve for a sanitary fitting which has at least the following:
  • a housing element with a mixing space for mixing cold water and hot water to form mixed water
  • a control element for setting a mixing ratio between the cold water and hot water in the mixing space and an expansion element according to the invention with which the control element can be actuated.
  • the thermostatic mixing valve is used in particular to mix cold water with a cold water temperature and hot water with a hot water temperature to form a mixed water with a desired mixed water temperature.
  • the thermostatic mixing valve has a mixing space in or on a housing element which is designed, for example, in the manner of a valve housing or cartridge head piece.
  • the cold water can be fed to the mixing chamber via at least one cold water regulating gap and / or the hot water can be fed to the mixing chamber via at least one hot water regulating gap.
  • the cold water temperature of the cold water is in particular a maximum of BO ° C (Celsius), preferably a maximum of 25 ° C, preferably 1 ° C to 25 ° C, particularly preferably 5 ° C to 20 ° C and / or the warm water temperature of the warm water in particular a maximum of 90 ° C, preferably 25 ° C to 90 ° C, particularly preferably 55 ° C to 65 ° C.
  • the thermostatic mixing valve has a control element, for example in the manner of a Control slide is formed. The control element is used to set a mixing ratio between the cold water and the hot water in the mixing room.
  • the Re gel element is arranged, in particular, so as to be movable in the mixing space.
  • the thermostatic mixing valve comprises an expansion element according to the invention.
  • the Re gel element can be actuated by the expansion element, in particular as a function of a mixed water temperature of the mixed water in the mixing space.
  • the mixed water can in particular at least partially flow around the expansion element.
  • a sanitary fitting which has at least one fitting housing and a thermostatic mixing valve according to the invention.
  • the sanitary fitting is used in particular to provide mixed water on a wash basin, a sink, a shower or a bathtub as required.
  • the sanitary fitting has a fitting housing and a thermostatic mixing valve according to the invention.
  • the fitting housing consists in particular at least partially of plastic and / or (cast) metal, such as brass, for example.
  • the fitting housing can be fastened to a support, for example a wall, countertop, a sink, a wash basin, a bath tub or a shower.
  • the sanitary fitting can have an operating element by means of which a setpoint mixed water temperature of the mixed water and / or a removal amount of the mixed water can be set.
  • Fig. 3 a sanitary fitting with a thermostatic mixing valve having the expansion element.
  • Fig. 1 shows an expansion element 1 at a first temperature in a longitudinal section.
  • the expansion element 1 comprises a housing 5, which here is cup-shaped.
  • an expansion material 3 which is wax here and which has an additive 4.
  • the additive 4 is powdery or particulate and mixed with the Dehn material 3.
  • the additive 4 can be synthetic graphite, highly conductive graphite with a thermal conductivity of at least X S / m and / or boron nitride.
  • the expansion element has a working piston 6, which by a flexible
  • the membrane 7 is separated from the expansion material 3.
  • the working piston 6 is guided in a guide opening 13 of a closure element 14, so that the working piston 6 can be occupied by the expansion material 3 in the guide opening 13.
  • Fig. 2 shows the expansion element 1 at a second temperature in a longitudinal section. Since the second temperature is higher than the first temperature, the expansion material 3 has expanded in comparison to the state shown in FIG. 1 and has driven the working piston 6 a little way out of the guide opening 13. As the temperature drops, the volume shrinks of the expansion material 3, so that the working piston 6, for example by a return spring, not shown here, can be reset.
  • Fig. 3 shows a sanitary fitting 8 in a longitudinal section, which can be used, for example, in a shower.
  • the sanitary fitting 8 comprises a fitting housing 12 with a thermostatic mixing valve 2 having the expansion element 1 shown in FIGS. 1 and 2 and a valve 15.
  • the fitting housing 12 can be supplied with cold water via a cold water inlet 16 and hot water via a hot water inlet 17.
  • the cold water and the hot water can be fed to the thermostatic mixing valve 2 via liquid channels formed in the fitting housing 12.
  • the thermostatic mixing valve 2 Through the thermostatic mixing valve 2, the cold water and the hot water can be mixed to form a mixed water with a mixed water temperature.
  • the thermostatic mixing valve 2 has a housing element 9 which is (essentially) tubular and extends along a longitudinal axis 18 of the thermostatic mixing valve 2 or the fitting housing 12 of the sanitary fitting 8. At least one hot water inlet 20 and at least one cold water inlet 21 are formed in a cartridge head piece 19 of the thermostatic mixing valve 2.
  • the embodiment variant of the thermostatic mixing valve 2 shown here has a plurality of hot water inlets 20 and cold water inlets 21, which are arranged distributed in a circumferential direction around the longitudinal axis 18 of the cartridge head piece 19. The hot water can be fed via the hot water inlets 20 and the cold water can be fed into a mixing space 10 of the thermostatic mixing valve 2 via the cold water inlets 21.
  • the mixing chamber 10 is arranged downstream of the hot water inlets 20 and the cold water inlets 21 in a flow direction of the water.
  • the hot water and the cold water can be mixed to form a mixed water with a mixed water temperature.
  • the mixing chamber 10 is followed by a mixed water outlet 22 in the flow direction of the water, through which the mixed water can leave the thermostatic mixing valve 2 at the mixed water temperature. From the Mischwas water outlet 22, the mixed water can be fed to the valve 15, with the valve body 23 of which a delivery of the mixed water from the sanitary fitting 8 can be controlled.
  • the mixed water temperature of the mixed water is determined by a mixing ratio between the hot water and the cold water and a hot water temperature of the hot water and a cold water temperature of the cold water.
  • the thermostatic mixing valve 2 has an operating element 24.
  • the operating element 24 comprises an operating handle 25 which is connected to a regulating nut 26 of an over load unit 27 in a rotationally fixed manner.
  • the actuating handle 25 can thus be rotated with the regulating nut 26 about an axis of rotation 28, which here corresponds to the longitudinal axis 18.
  • a spring sleeve 29 is adjusted in an axial direction 30, ie parallel to the longitudinal axis 18.
  • the movement of the spring sleeve 29 in the axial direction 30 is transmitted to the expansion element 1, which in turn moves a control element 11 in the axial direction 30 in the manner of a control slide.
  • the regulating element 11 can alternately open and close a hot water regulating gap, which cannot be seen here, and a cold water regulating gap, which cannot be recognized here.
  • a corresponding amount of hot water and cold water is passed into the thermostatic mixing valve 2 through the hot water regulating gap and the cold water regulating gap, from which the mixed water is mixed with a corresponding mixed water temperature.
  • the control element 11 can be actuated by the working piston 6 of the expansion element 1 also shown in FIGS Maintaining the mixed water temperature.
  • the expansion material 3 of the expansion material element 1 is heated and expanded, whereby it adjusts the control element 11 in the axial direction 30 in the direction of the mixed water outlet 22, so that the warm water control gap is reduced and the cold water control gap is increased.
  • the warm water control gap is reduced and the cold water control gap is increased.
  • the expansion material 3 of the expansion element 1 shrinks, whereby the expansion element 1 removes the control element 11 from the mixing valve. Water outlet 22 moved away so that the hot water control gap is enlarged and the cold water control gap is reduced.
  • the present invention enables a particularly high reaction speed of an expansion element to be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Temperature-Responsive Valves (AREA)
  • Domestic Plumbing Installations (AREA)
  • Multiple-Way Valves (AREA)
  • Accessories For Mixers (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

L'invention concerne un élément de matériau extensible (1) pour un mitigeur thermostatique (2), comprenant un matériau extensible (3) qui présente au moins un additif (4) du groupe suivant : • du graphite synthétique, • du graphite hautement conducteur ayant une conductivité thermique d'au moins 350 W/ (m x K), et • du nitrure de bore. L'invention concerne également un mitigeur thermostatique (2) comprenant un tel élément de matériau extensible (1), ainsi qu'une robinetterie sanitaire (8) pourvue d'un tel mitigeur thermostatique (2).
EP21707232.1A 2020-03-18 2021-02-19 Élément de matériau extensible pour mitigeur thermostatique Pending EP4121477A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020107422.0A DE102020107422A1 (de) 2020-03-18 2020-03-18 Dehnstoffelement für ein Thermostatmischventil
PCT/EP2021/054176 WO2021185529A1 (fr) 2020-03-18 2021-02-19 Élément de matériau extensible pour mitigeur thermostatique

Publications (1)

Publication Number Publication Date
EP4121477A1 true EP4121477A1 (fr) 2023-01-25

Family

ID=74673230

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21707232.1A Pending EP4121477A1 (fr) 2020-03-18 2021-02-19 Élément de matériau extensible pour mitigeur thermostatique

Country Status (5)

Country Link
EP (1) EP4121477A1 (fr)
JP (1) JP2023520174A (fr)
CN (1) CN115279827A (fr)
DE (1) DE102020107422A1 (fr)
WO (1) WO2021185529A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322358B4 (de) * 2003-05-09 2014-12-31 Behr Thermot-Tronik Gmbh Thermostatisches Arbeitselement
DE102004050996B4 (de) 2004-10-20 2013-07-25 Hansa Metallwerke Ag Sanitäres Thermostat-Mischventil
FR2885180B1 (fr) * 2005-04-27 2010-09-03 Vernet Element thermostatique a reponse rapide, ainsi que cartouche et robinet equipes d'un tel element
ES2562779T3 (es) * 2005-08-04 2016-03-08 Sgl Carbon Se Materiales de construcción de yeso con conductividad térmica elevada y blindaje frente a rayos electromagnéticos
FR2904063B1 (fr) 2006-07-19 2008-10-17 Vernet Sa Element thermostatique a reponse rapide,ainsi que cartouche et robinet equipes d'un tel element
DE102010008496A1 (de) * 2010-02-18 2011-08-18 Gustav Wahler GmbH u. Co. KG, 73730 Thermostatische Arbeitselement und Verfahren zum Herstellen eines thermostatischen Arbeitselements
DE102010009486B4 (de) * 2010-02-26 2013-05-29 Ivan Bystrican Doppelscheiben-Magnetgenerator mit Rechteckkurvenform der Ausgangsspannung
CN103914091B (zh) * 2013-01-05 2016-05-11 成霖企业股份有限公司 一种恒温组件及其制法
DE102014208355A1 (de) 2014-05-05 2015-11-05 Behr Thermot-Tronik Gmbh Wachsdehnstoff
DE102018103165A1 (de) 2018-02-13 2019-08-14 Otto Egelhof Gmbh & Co. Kg Thermostatisches Arbeitselement

Also Published As

Publication number Publication date
WO2021185529A1 (fr) 2021-09-23
DE102020107422A1 (de) 2021-09-23
JP2023520174A (ja) 2023-05-16
CN115279827A (zh) 2022-11-01

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