EP1809932A1 - Melangeur thermostatique dote d'un dispositif de reglage dynamique d'un flux d'eau - Google Patents
Melangeur thermostatique dote d'un dispositif de reglage dynamique d'un flux d'eauInfo
- Publication number
- EP1809932A1 EP1809932A1 EP05823982A EP05823982A EP1809932A1 EP 1809932 A1 EP1809932 A1 EP 1809932A1 EP 05823982 A EP05823982 A EP 05823982A EP 05823982 A EP05823982 A EP 05823982A EP 1809932 A1 EP1809932 A1 EP 1809932A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- piston
- thermostatic mixer
- passage
- cold water
- 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.)
- Withdrawn
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000013519 translation Methods 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 3
- 230000002517 constrictor effect Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/265—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a sleeve sliding in the direction of the flow line
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86879—Reciprocating valve unit
Definitions
- the present invention relates to a thermostatic mixer containing a device for the dynamic control of the cold water flow, which supplies the mixer.
- the thermostatic mixers which are capable of handling a large flow, do not function regularly when the flow requested by them is much smaller than the maximum flow for which they are designed, as occurs, for example a thermostatic mixer suitable for supplying a single shower to supply a multi-shower system is used. Under these circumstances, the thermostatic mixers lose their stability and oscillate, so that the water flow derived from them undergoes constant changes in the ratio of the mixture between cold water and warm water and thus undergo temperature fluctuations that are uncomfortable and dangerous for the user can.
- This drawback can be overcome by countering the flow of cold water supplied to the thermostatic mixer when small flows of mixed water are to be conveyed, and suppressing or reducing this resistance when large flows of mixed water are to be promoted.
- Main object of the present invention to provide a thermostatic mixer that includes a device for the dynamic control of the cold J intake water whose structure must be so simple that its installation is possible in the thermostatic mixer, and their functioning independently in a wide range is from Must be inlet pressure so that the device may not require adjustments when performing its installation and may not function irregularly even if considerable variations in inlet pressure occur.
- a further object of the present invention is to provide such a thermostatic mixer which incorporates a dynamic flow control device which is of simple construction, inexpensive compared to a similar thermostatic mixer, which in itself is not a dynamic one Contains flow control and is equipped with a separate device for dynamic flow control, and ensures a high reliability and long life.
- a thermostatic mixer comprising, in a body provided with a cold water feed passage, a warm water feed passage and a mixed water discharge passage, a slide for axial translation translation is provided in the body and for restricting acting on the warm water supply passages and the countercurrent cold water, so that their mixing ratio is changed, an expansion thermo-element connected to the slider for operating the same, and in the drain passage for the mixed water extends, a spring acting on the thermocouple and the body of the device, means for adjusting the rest position of the thermocouple and a rod connecting the thermocouple and the means for adjusting its position, characterized in that inside the slider in Bere I formed the inlet passage of the cold water, an annular inlet chamber; in that the mixer further comprises a hollow cylinder disposed inside the slider and adapted for translation in axial translation between a first position in which it narrows the passage between the annular chamber and the space inside the slider and the piston itself, and one second position, in which the piston does not narrow this passage, is
- the piston narrows the inlet of the mixer only in cold water when it is in its first position (the rest), and allows a flow with a limited flow rate which, although much smaller than that for which the thermostatic mixer is designed, thanks to the presence of the constriction of the inlet of the cold water does not interfere with the operation of the thermostatic mixer caused.
- the pressure that forms in the intermediate chamber is determined by the pressure drop that the flow undergoes when passing from the inlet chamber through the restricted radial passages to the intermediate chamber, and the pressure prevailing in the drain chamber is smaller than the first one due to the pressure drop the flow suffers as it traverses the axial restricted passageway defined in the transverse wall of the piston.
- the effect exerted on the piston in the axial direction and in the opposite direction as that of the return spring is based essentially on the difference between the pressure prevailing in the intermediate chamber and the pressure prevailing in the discharge chamber; this pressure difference acts on the transverse portion of the piston and tends to overcome the force of the return spring to '.
- suitable dimensioning with regard to the cross-section of the restricted passages provided in the skirt of the piston, the free cross-section of the limited passage provided in the transverse wall of the piston, and the force of the return spring makes it possible to prevent the piston from reaching its first position second position shifts as long as a river is derived, the is less than the maximum flow that can cause instability in the thermostatic mixer.
- Fig. 1 shows in axial section a thermostatic mixer according to the invention, which contains a device for the dynamic control of a flow.
- Fig. 2 represents only the parts of the mixer of Fig. 1, which relate to the invention, at rest or in the state of the expiration with a reduced flow.
- Fig. 3 shows the same parts of the mixer of Fig. 2, but in the state of the flow of an increased flow.
- FIGS. 4 and 5 represent analogously to FIGS. 2 and 3 another embodiment of the device according to the invention.
- a thermostatic mixer in axial section, the invention includes a device for the dynamic control of an incoming cold water flow, which has the function to stabilize the operation of the thermostatic mixer.
- the mixer comprises a body 1, which is closed at the top in the manner of a stopper from the upper part of the body 2 of a cartridge inserted into the body 1.
- the body 1 constitutes a cold water feed port 3, a warm water feed port 4, and a mixed water discharge port 5.
- the cold water inflow port 3 and the warm water inflow port 4 extend into respective annular inflow passages 6 and 7, respectively, in the body 1, and these annular passages correspond to respective inflow passages 8 and 9, respectively, in the body of the cartridge 2 are formed.
- a slider 10 is mounted axially displaceable, which is designed to constrict the inlet passages 8 and 9 in opposite directions to modify in the opposite direction, the flows of cold water and warm water flowing into the slide 10th occur, and thus to modify the mixing ratio and the temperature of the mixed water, which is sent to the drain port 5.
- the spool 10 has a passage-penetrated transverse wall 11 to which a strain thermo-element 12 is fixed, which extends to the discharge port 5 of the mixed water and expands depending on the temperature of the mixed water, thereby displacing the spool 10.
- a spring 13 while a control and safety device 26, which is arranged on the opposite side of the spring 13 and accessible to the user for control, determines the rest position of the slider 10 via a rod 24.
- Suitable seals are arranged in a known manner where water tightness must prevail, and are not described further.
- the parts described so far represent the conventional design of a thermostatic mixer, this structure and its operation are known in the art.
- the slide 10 forms an annular inlet chamber 19 in the region of the feed channels 8 for the cold water, and inside the slide 10 a hollow cylinder 14 is axially displaceably mounted, which has a cylindrical jacket 15 which is penetrated by limited passages 16.
- the cylinder 14 is allowed to move between a first position (upwardly displaced as viewed in the drawing) in which the shell 15 narrows the passage from the annular inlet chamber 19 into the interior of the spool 10 and the hollow cylinder 14, and a second position (according to FIGS Shift drawing down) shift, in which the jacket 15 does not narrow the passage.
- the hollow cylinder 14 has a transverse wall 17 in which an axial limited passage 18 opens, which is penetrated by the rod 24, which connects the thermocouple 12 with the control means 26.
- a return spring 20 is arranged, which acts on the cylinder 14 to the first position, which is the rest position.
- the jacket 15 and the transverse wall 17 of the cylinder 14 define an intermediate chamber 21, while between the transverse wall 17 of the cylinder 14 and the transverse wall 11 of the slider 10, a drain chamber 22 is limited.
- the restricted radial passages 16 allow a limited flow to pass from the inlet chamber 19 to the intermediate chamber 21 located inside the piston and then through the axial passage 18 and the drain chamber 22 to the drain port 5 continue, whereby the whole device is traversed. If such a limited flow is present, the pressure in the inlet chamber 19 is the inlet pressure of the cold water, the pressure in the intermediate chamber 21 is less than the inlet pressure due to the pressure drop, the flow has suffered by the passage of the restricted passages 16 and the pressure in the drain chamber 22 is further reduced due to the pressure drop that the flow has suffered as it traverses the restricted axial passageway 18.
- the piston Due to the difference between the pressure prevailing in the intermediate chamber 21 and the lower pressure prevailing in the discharge chamber 22, the piston is urged to move away from the inlet chamber 19, and the return spring 20 counteracts this process.
- the piston 14 is virtually unaffected by the inlet pressure present in the inlet chamber 19, since this pressure acts on the jacket 15 of the piston 14 in the radial direction.
- the pressure drops suffered by the flow depend only on the intensity of the flow and on the resistances opposed thereto and not on the absolute value of the pressure. The behavior of the piston 14, in turn, is not significantly affected by the value of the inlet pressure and its changes.
- the restricted radial passages 16, the limited axial passage 18, and the return spring 20 must be proportioned relative to each other such that the action of the spring 20 substantially corresponds to the force tending to move the piston 14 from the first position to the second position shift when the maximum flow is discharged, which can cause instability in a thermostatic mixer.
- the piston 14, in turn, retains its first position, shown in FIG. 2, as long as the requested flow remains below said maximum value.
- the restricted radial passages 16 are formed of small recesses provided in the edge of the end of the skirt portion 15 of the piston 14. In this case, it is beneficial if the skirt portion 15 is thin to minimize a reduced and generally negligible component of the inlet pressure acting in the axial direction on the piston acting on the cross-section of the restricted radial passages 16.
- Figs. 4 and 5 show another embodiment of the device according to the invention.
- the parts which are the same as or correspond to the parts of the first embodiment are denoted by the same reference numerals.
- the second embodiment according to Figs. 4 and 5 differs from the preceding one in the fact that the restricted passages between the inlet chamber 18 and the intermediate chamber 21 consist of one or more small holes 23 provided in the skirt portion 15 and do not consist of small recesses 16 which are provided in the edge of the end of the skirt portion 15 of the piston 14.
- the negligible component of the inlet pressure which acts on the piston in the axial direction in the previous embodiment, is absent, and it has no significance that the skirt portion 15 of the piston 14 should be thin.
- the invention makes it possible to realize a thermostatic mixer which in itself contains a device for dynamically controlling the inflow of cold water, which is practically not sensitive to variations in the inlet pressure and stabilizes the operation of the thermostatic mixer. It is not necessary to adjust the load of the return spring depending on the inlet pressure present in the system, and no failure of the functioning of the device is observed even if, for some reason, this inlet pressure changes to a greater extent.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Temperature-Responsive Valves (AREA)
- Domestic Plumbing Installations (AREA)
- Multiple-Way Valves (AREA)
Abstract
L'invention concerne un mélangeur thermostatique comportant un dispositif de réglage dynamique du flux d'admission d'eau froide. Ce mélangeur comprend, dans un corps, un coulisseau qui se déplace par translation axiale dans le corps et pour un effet de rétrécissement sur les passages d'admission d'eau chaude et d'eau froide dans des directions opposées de telle façon que leur rapport de mélange puisse être modifié ; une thermopile d'expansion qui est reliée au coulisseau pour son actionnement et s'étend dans le passage de sortie de l'eau mélangée ; un ressort agissant sur la thermopile et un moyen de réglage de la position de la thermopile. Selon l'invention, le coulisseau abrite dans la zone du passage d'admission d'eau froide une chambre d'admission annulaire. Le mélangeur présente également un cylindre creux qui est logé dans le coulisseau et permet le déplacement en translation axiale entre une première position dans laquelle il rétrécit la chambre annulaire et l'espace intérieur du coulisseau et du piston lui-même, et une deuxième position dans laquelle le piston rétrécit ce passage. Le mélangeur comprend un deuxième ressort qui agit entre le coulisseau et le piston dans la direction dans laquelle il entraîne le piston dans la première position. Le piston est doté de passages radiaux limités qui le traversent et se trouvent dans la zone de la chambre d'admission annulaire lorsque le piston est dans sa première position. Le piston présente une paroi transversale qui subdivise l'espace à l'intérieur du piston en une chambre intermédiaire et une chambre de sortie et dans laquelle se trouve un passage axial limité destiné au flux. Ce dispositif demeure sensiblement insensible aux modifications de la pression d'admission.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO20040777 ITTO20040777A1 (it) | 2004-11-09 | 2004-11-09 | Miscelatore termostatico includente un dispositivo per il controllo dinamico di un flusso di acqua |
PCT/IB2005/003358 WO2006051389A1 (fr) | 2004-11-09 | 2005-11-09 | Melangeur thermostatique dote d'un dispositif de reglage dynamique d'un flux d'eau |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1809932A1 true EP1809932A1 (fr) | 2007-07-25 |
Family
ID=35951362
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05823982A Withdrawn EP1809932A1 (fr) | 2004-11-09 | 2005-11-09 | Melangeur thermostatique dote d'un dispositif de reglage dynamique d'un flux d'eau |
Country Status (7)
Country | Link |
---|---|
US (1) | US7740183B2 (fr) |
EP (1) | EP1809932A1 (fr) |
JP (1) | JP2008519226A (fr) |
CN (1) | CN100580291C (fr) |
CA (1) | CA2587154C (fr) |
IT (1) | ITTO20040777A1 (fr) |
WO (1) | WO2006051389A1 (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7717351B2 (en) | 2001-08-24 | 2010-05-18 | Margarl, LLC | Mixing valve |
EP1898195B1 (fr) * | 2006-09-06 | 2010-07-14 | Kistler Holding AG | Capteur de température doté d'une face pouvant être traitée |
WO2010019078A1 (fr) * | 2008-08-15 | 2010-02-18 | Termoventiler I Ulricehamn Ab | Robinet mélangeur thermostatique pour un système de chauffage domestique |
FR2942524B1 (fr) * | 2009-02-26 | 2011-04-15 | Watts Ind France | Vanne melangeuse thermostatique |
CN101509559B (zh) * | 2009-03-25 | 2011-01-26 | 厦门市易洁卫浴有限公司 | 恒温控制阀 |
US20110266355A1 (en) * | 2010-04-29 | 2011-11-03 | Tsai-Chen Yang | Water mixer for faucet |
CN101943275A (zh) * | 2010-09-08 | 2011-01-12 | 常州市华鹏机械电器制造有限公司 | 自动恒温混水阀 |
CN102135207B (zh) * | 2011-01-24 | 2013-03-13 | 卓旦春 | 一种地暖恒温阀 |
CN102062256B (zh) * | 2011-01-24 | 2014-06-11 | 卓旦春 | 地暖恒温阀 |
CA2792798C (fr) | 2011-10-22 | 2022-04-12 | Magarl, Llc | Methodes et appareil pour creer de la turbulence dans un mitigeur thermostatique |
ITMI20112121A1 (it) * | 2011-11-22 | 2013-05-23 | Getters Spa | Sistema per la produzione di acqua calda e distributore automatico di bevande che lo utilizza |
CN102425687B (zh) * | 2011-12-02 | 2013-07-31 | 常州有容电子有限公司 | 自动温度调节阀 |
CN103195947B (zh) * | 2013-03-14 | 2015-08-12 | 山东大学 | 无级可调恒温混水阀 |
US9709077B2 (en) * | 2015-12-17 | 2017-07-18 | ROTEX Manufacturers and Engineers Limited | Hydro pneumatic accumulator with internal leak detection |
DE102017100706A1 (de) * | 2017-01-16 | 2018-07-19 | Grohe Ag | Mischkartusche für eine Sanitärarmatur mit einem zumindest einen rohrförmigen Ansatz aufweisenden Steuerkörper |
CN110725998B (zh) * | 2019-10-17 | 2021-02-26 | 浙江锋源仪表有限公司 | 一种便于维修的温控阀 |
CN111336275B (zh) * | 2020-03-18 | 2021-12-21 | 宁波杰克龙精工有限公司 | 一种流量调节阀及其调节方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1095924A (en) * | 1965-08-24 | 1967-12-20 | Richard Harding | Improvements in or relating to thermally controlled mixing valves |
IT949211B (it) * | 1972-02-29 | 1973-06-11 | Knapp Alfons | Miscelatore termostatico per impianti idraulici |
FR2602502B1 (fr) * | 1986-08-11 | 1989-07-28 | Trubert Ets Rene | Perfectionnements aux dispositifs melangeurs thermostatiques, en particulier pour la distribution d'eau |
US5148976A (en) * | 1991-03-15 | 1992-09-22 | The Horne Engineering Co., Ltd. | Thermostatic mixing valve |
IT1277638B1 (it) * | 1995-09-21 | 1997-11-11 | Macrifin Spa | Miscelatore termostatico anticalcare |
US6471132B1 (en) * | 1999-07-06 | 2002-10-29 | Masco Corporation Of Indiana | Thermostatic mixing device with arrangement to increase mixing |
GB0016481D0 (en) * | 2000-07-05 | 2000-08-23 | Horne Engineering Co Ltd | Thermostatic mixing valve |
ITBS20020118U1 (it) * | 2002-11-07 | 2004-05-08 | Zipponi Rubinetterie Di Nember Oscar | Valvola miscelatrice termostatica allestita con corpo a cartuccia |
-
2004
- 2004-11-09 IT ITTO20040777 patent/ITTO20040777A1/it unknown
-
2005
- 2005-11-09 WO PCT/IB2005/003358 patent/WO2006051389A1/fr active Application Filing
- 2005-11-09 CN CN200580038357A patent/CN100580291C/zh not_active Expired - Fee Related
- 2005-11-09 CA CA 2587154 patent/CA2587154C/fr not_active Expired - Fee Related
- 2005-11-09 EP EP05823982A patent/EP1809932A1/fr not_active Withdrawn
- 2005-11-09 JP JP2007540739A patent/JP2008519226A/ja active Pending
-
2007
- 2007-05-07 US US11/800,758 patent/US7740183B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2006051389A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN101084392A (zh) | 2007-12-05 |
WO2006051389A1 (fr) | 2006-05-18 |
CA2587154C (fr) | 2012-05-22 |
CN100580291C (zh) | 2010-01-13 |
JP2008519226A (ja) | 2008-06-05 |
ITTO20040777A1 (it) | 2005-02-09 |
CA2587154A1 (fr) | 2006-05-18 |
US7740183B2 (en) | 2010-06-22 |
US20070290054A1 (en) | 2007-12-20 |
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