EP0000768B1 - Dispositif de mélange d'eau chaude et froide - Google Patents

Dispositif de mélange d'eau chaude et froide Download PDF

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Publication number
EP0000768B1
EP0000768B1 EP78100569A EP78100569A EP0000768B1 EP 0000768 B1 EP0000768 B1 EP 0000768B1 EP 78100569 A EP78100569 A EP 78100569A EP 78100569 A EP78100569 A EP 78100569A EP 0000768 B1 EP0000768 B1 EP 0000768B1
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EP
European Patent Office
Prior art keywords
water
slider
whereat
hot
housing
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.)
Expired
Application number
EP78100569A
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German (de)
English (en)
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EP0000768A1 (fr
Inventor
Bernhard W. Braukmann
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.)
Honeywell Braukmann GmbH
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Honeywell Braukmann GmbH
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Filing date
Publication date
Application filed by Honeywell Braukmann GmbH filed Critical Honeywell Braukmann GmbH
Publication of EP0000768A1 publication Critical patent/EP0000768A1/fr
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Publication of EP0000768B1 publication Critical patent/EP0000768B1/fr
Expired legal-status Critical Current

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    • 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

Definitions

  • the invention relates to a mixing device for connection to at least the hot water connection of a water heater, with a cold water inlet connection, a mixed water outlet connection and a thermostatically controlled, acted upon by a loading spring slide, on which one end of the loading spring is supported, and in a mixer body is displaceable, which has at least two circumferential rows of control openings arranged one behind the other on its wall in the direction of displacement of the slide, of which only one can be completely covered by the slide, at least one opening being provided on or in the region of a bottom of the slide and each row of control openings is connected to an annular channel surrounding the mixer body, one annular channel also being hydraulically connected to the cold water inlet connector and the other to the hot water connection of the water heater.
  • Such a mixing device has already become known, for example, from German Auslegeschrift 12 72 062. Since this mixing device is combined with two shut-off valves, its slide must be designed as a double-body piston slide. This construction also requires an external load spring. Each of these constructive measures, and especially all of them together, result in a disproportionately long construction in the direction of movement of the slide. This does not necessarily have a disadvantageous effect in the known mixing device, because, as said, it is combined with two shut-off valves which require a relatively large amount of space in the longitudinal direction of the slide or the mixer body itself.
  • the object of the invention is therefore to develop a mixing device of the type mentioned in such a way that a particularly simple and compact design results.
  • the mixing device is designed according to the preamble of claim 1 in accordance with the characterizing part of this claim.
  • the shaping of the annular channels on the mixer body eliminates the bushing necessary in the previously known mixing device and concentrically surrounding the mixer body. This saves not only their manufacture, but also fixing them in the housing, which simplifies the mixing device in the desired manner.
  • the load spring can move inwards, i.e. be placed in the cavity defined by the mixer body and the slide, because the mixer body is now also provided with a base and the slide is designed as a so-called single slide. Both the use of a single slide and the relocation of the load spring to the inside of the mixing element result in a particularly compact, yet simple design.
  • one medium flows around its one end in one end position, while the other medium flows past its other end in the other end position.
  • the one medium flows in one end position of a double-body spool into an annular groove located between its two bodies, into which the other medium also enters in the other end position.
  • the partial media flows enter this annular groove proportionately, while in the case of the single slide valve they flow proportionately past the two ends.
  • the length of the single spool is only about a third of the length of a double-body spool.
  • a further development of the invention provides that one of the outer frets is assigned to the bottom of the mixer body and projects above it in particular, this outer collar being supported on an inner shoulder of the mixer housing and at least at one point having a flow channel running approximately in the axial direction of the slide and the bottom hot water flows outside.
  • this outer collar being supported on an inner shoulder of the mixer housing and at least at one point having a flow channel running approximately in the axial direction of the slide and the bottom hot water flows outside.
  • Another embodiment of the invention provides that in each case on the inside of the bottoms of the slide and the mixer body, a central centering attachment for the load spring designed as a helical compression spring is attached, in particular molded on. This makes it easy to achieve good centering and secure retention of the load spring inside the mixing element.
  • Another embodiment of the device with a working element which can be adjusted in the working direction against the force of the load spring by means of an adjusting member is characterized in that the bottom of the slide has a centering hole on the outside, into which the free end of a working piston of the thermostatic working element engages. The direct coupling of the working piston to the slide leads to the desired compact design and thus to a simple construction that there is no need for intermediate transmission elements.
  • the housing of the thermostatic working elements is inserted into a sleeve-shaped holder and the holder with a surface facing the direction of ejection of the thermostatic working piston rests against an eccentric or eccentric approach of an adjusting element for the mixing temperature, the adjusting element being about an axis approximately perpendicular to the longitudinal axis of the thermostat is rotatably mounted on or in the device housing.
  • the piston of the thermostatic working element presses directly or indirectly against the piston of the mixer.
  • the sleeve-shaped holder must be designed and attached so that the thermostatic working element can feel the temperature of the mixed water without errors.
  • the mixed water must be able to flow through the relevant point of the mixing device at least without significant hindrance.
  • the holder has longitudinal inner strips or the like. Approaches which, on the one hand, center the housing of the thermostatic working element and, on the other hand, form flow channels for the mixed water flowing past. It is expedient if all of the mixed water flows through these flow channels. You must therefore be dimensioned accordingly large.
  • the housing of the conventional thermostatic working elements working with expansion material usually has an outer collar. This is often used for fastening purposes. If, in a further development of the invention, the inner strips of the holder protrude from its tubular part counter to the direction of flow, then the thermostatic working element can be pushed deep into the holder until its collar rests on the end faces of the protruding strip ends. On the one hand, this means that the final assembly position is correctly specified, and on the other hand, inflow openings for the mixed water remain between the protruding strip ends.
  • the eccentric or eccentric approach of the adjusting element is designed in the manner of a polygon, and the holder is supported with a counter surface on one of the polygonal surfaces which are at different distances from the axis of rotation of the adjusting element.
  • This polygonal surface is from the axis of rotation, the more the piston slide is pushed into the mixer body against the resistance of the loading spring. This then also increases the counterforce on the thermostatic working element, which ultimately results in an increase in the mixed water temperature.
  • the mixed water temperature is reduced by a corresponding rotation of the eccentric or eccentric approach. Since in this setting device two surfaces each abut each other and they are pressed against each other by the load spring, the set value for the mixed water is retained without any special precautions.
  • the housing of which essentially has an H-shaped shape, the one H-leg with the cold water pipe and the cold water nozzle of the water heater and the other H-leg with the hot water nozzle of the water heater and a mixed water drainage line and the H crosspiece is flowed through by cold water it consists in that the H crosspiece is telescopically extendable in the area of at least one H leg and the two telescopic parts are sealed against one another by means of at least one sealing ring.
  • Conventional water heaters usually have a connection pipe for the cold and the exiting hot water. The side spacing of these connecting pipes cannot be changed, but differs for the individual makes.
  • the design described above now enables the mixing device according to the invention to be easily adapted to the various commercially available water heaters.
  • the H crossbar has a connection for a safety valve or a safety valve, in particular a membrane safety valve, is attached directly to the H crossbar in a very expedient manner.
  • the housing of the safety valve can be made at least partially in one piece with the H crosspiece or the associated telescopic section of the H crosspiece.
  • the housing of the mixing device according to the invention has an essentially H-shaped shape, the one H-leg forming a cold water inlet connection 1 for a cold water line 2 and a cold water outlet connection 3 for connection to the cold water connection of a water heater, not shown.
  • the other H-leg forms with its upper end a hot water inlet connection 5 for connection to the hot water connection of the water heater, while its lower end serves as a mixed water outlet connection 4.
  • the latter is connected to a mixed water line 6, but the mixed water could also be taken directly from it.
  • the connections are made with the help of union screw connections 7.
  • a shut-off valve 8 can be installed in the lower part of the one H-leg.
  • connection piece 9 can also be provided in a very advantageous manner, which enables the connection of a further cold water pipe and is closed with a plug 10 when not required.
  • the two H-legs are hydraulically connected by means of the H crossbar 11. Since the mixing element 12 is located in the other H-leg, the H-crosspiece 11 is only flowed through by cold water.
  • the mixing element 12 has a thermostatically controlled slide 13 which interacts with a mixer body 14.
  • the latter has two circumferential rows of control openings 15 and 16, respectively.
  • the control openings have a rectangular cross-section and four are each arranged on a circular surface line of the mixer body 14.
  • the hot water coming from the water heater flows from the outside inwards through the control openings 15, while the control openings 16 likewise have cold water flowing through them from the outside inwards.
  • the mixer body 14 and the slide 13 designed as a piston slide each have an essentially cup-shaped shape, the free pot edges facing each other and the slide 13 being inserted into the mixer body 14.
  • a load spring 17 for a thermostatic working element 18 is inserted between the two parts. It is centered and held by peg-shaped lugs 19 and 20. Openings 21 are provided on the bottom of the slide 13, through which the mixed water emerges and which in some cases extend somewhat into the pot wall.
  • the distance between the two rows with the control openings 15 and 16, seen in the direction of displacement of the slider 13, and the dimensions of the slider 13 are now selected so that the control openings 16 are completely released when the slider completely covers the control openings 15 and vice versa. In one extreme case, only cold water enters the interior of the mixing element, while in the other extreme only hot water only flows into and out of the mixing element. Intermediate positions of the slide 13 result in more or less warm mixed water.
  • the mixer body has at its upper and lower ends and approximately in the middle three outer collars 22, 23 and 24, which together with the housing bore 25 surrounding them and the cylinder outer wall 26 of the mixer body together form two ring channels 27 and 28. Via an opening 29 in the housing wall, the ring channel 27 is in hydraulic connection with the inside of the H crosspiece and thus with the cold water line.
  • the outer collar 24 which also serves to support the mixer body 14 on a shoulder 30 of the device housing, projects beyond the bottom 31 of the mixer body.
  • this outer collar is interrupted at several points in order to create flow channels 33 for the hot water arriving in the direction of the arrow 32.
  • the path which the warm water travels to the inside of the mixing element 12 is marked with the arrow 32 a.
  • the free end of the working piston 36 extending in the direction of the arrow 55 of a thermostatic working element 37 is inserted from the outside into a centering hole 34 in the base 35 of the slide 13.
  • Its housing 39 which is provided with a collar 38, is inserted into a sleeve-shaped holder 40.
  • It has longitudinal strips 41 which on the one hand directly support the thermostatic working element and on the other hand form flow channels 42 for the water coming from the mixing element 12.
  • the wall of the sleeve-shaped holder 40 is flattened up to one of the strips 41, so that a surface 43 pointing in the direction of flow of the mixed water is created.
  • the loading spring 17 is more or less tensioned in the interior of the mixing member 12 depending on the rotational position of the adjusting member 45. In this way you can reach the Change in the setpoint.
  • the loading spring also ensures that the surface 43 bears tightly against the eccentric 44 and for a connection between the working piston 36 and the slide 13 that is free of play in the axial direction.
  • the axis of rotation 47 of the adjusting member 45 runs perpendicular to the working direction of the working piston 36 of the holder 40 protrude from the latter, their free end faces forming stops for the collar 38 of the thermostatic working element 37.
  • the necessary inflow openings 48 are also created in this way for the mixed water which is conducted exclusively past the housing of the thermostatic working element.
  • the H crosspiece 11 of the housing of the mixing device according to the invention can be telescopically extended at least at one point, preferably in the area of the mixing element 12.
  • the tubular telescopic part 49 made in one piece with the one H-leg overlaps the telescopic part 50 formed on the other H-leg.
  • the latter has an annular groove for inserting a sealing ring 51, preferably an 0-ring.
  • a sealing ring 51 preferably an 0-ring.
  • a second telescopic connection could be provided at the right end (FIG. 1) of the H crossbar, but the central telescopic part would then have to be secured against displacement after adjustment.
  • the H-crosspiece also has a connection 52 for a safety valve 53 and a drain connection 54 belonging to the safety valve.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Multiple-Way Valves (AREA)
  • Domestic Plumbing Installations (AREA)
  • Temperature-Responsive Valves (AREA)

Claims (11)

1. Dispositif mélangeur pour établir une liaison avec au moins le raccord d'eau chaude d'un préparateur d'eau chaude, avec un raccord d'arrivée d'eau froide (1), avec un raccord de décharge d'eau mélangée (4) et avec un tiroir commandé thermostatiquement, chargé par un ressort (17), et contre lequel s'appuie l'une des extrémités dudit ressort et qui est coulissable dans un corps du mélangeur (14) qui comporte au moins deux rangées périphériques d'orifices des distribution (15, 16) disposés l'un derrière l'autre dans sa paroi dans le sens de translation du tiroir et dont une seulement peut être complètement fermée par le tiroir, au moins un évidement (21) étant ménagé sur ou dans la zone d'un fond (35) du tiroir (13) et chaque rangée d'orifices de distribution étant en liaison avec un canal annulaire (27, 28) entourant le corps du mélangeur, l'un des canaux annulaires (27) étant en outre relié hydrauliquement avec le raccord d'arrivée d'eau froide (1) tandis que l'autre est relié hydrauliquement au raccord d'eau chaude du préparateur d'eau chaude, caractérisé en ce que les canaux annulaires (27, 28) sont formés par la paroi extérieure du corps de mélangeur (14) et par trois collets extérieurs (22, 23, 24) placés à une certaine distance l'un de l'autre sur cette paroi ainsi que par un trou cylindrique (25) du carter du dispositif mélangeur, et en ce que le corps de mélangeur (14) est, à son extrémité opposée au fond (35) du tiroir (13), fermé par un fond (31), l'autre extrémité du ressort de charge (17) s'appuyant contre le fond du corps de mélangeur, et en ce que le tiroir (13) est réalisé sous forme d'un tiroir simple suivant les deux extrémités duquel du fluide peut s'écouler.
2. Dispositif selon la revendication 1, caractérisé en ce qu'un des collets extérieurs (22, 23, 24) est associé au fond (31) du corps de mélangeur (14) et dépasse notamment de celui-ci, ce collet extérieur (24) s'appuyant contre un épaulement intérieur (30) du carter de mélangeur, et en ce qu'il comporte, au moins en un endroit, un canal d'écoulement (33) s'étendant suivant la direction axiale du tiroir (13) et en ce que le fond (31, 13) est balayé extérieurement par l'eau chaude.
3. Dispositif selon l'une des revendications 1 ou 2, caractérisé en ce qu'un appendice axial de centrage (20, 19) pour le ressort de charge (17) réalisé sous forme d'un ressort à boudin, est disposé, par exemple formé, sur le côté intérieur respectif des fonds (35, 31) du tiroir (13) et du corps de mélangeur (14).
4. Dispositif selon la revendication 3, comportant un élément de travail réglable par un organe de réglage dans la direction de travail contre la force du ressort de charge, caractérisé en ce que le fond (35) du tiroir (13) comporte extérieurement un trou de centrage (34) dans lequel s'engage l'extrémité libre d'un piston de travail (36) de l'élément thermostatique de travail (37).
5. Dispositif selon la revendication 4, caractérisé en ce que le carter (39) de l'élément thermostatique de travail (37) est emboîté dans un support (40) en forme de fourreau, et en ce que le support s'applique par une surface (43), dirigée en sens opposé à la direction de sortie (55) du piston de travail (36), contre un excentrique (44) ou contre un appendice en forme d'excentrique d'un organe de réglage (45) de la température d'eau mélangée, l'organe de réglage étant monté sur ou dans le carter de dispositif et à rotation autour d'un axe (47) à peu près perpendiculaire à l'axe longitudinal du thermostat.
6. Dispositif selon la revendication 5, caractérisé en ce que le support (40) comporte des voiles intérieurs (41) orientés dans la direction longitudinale et qui assurent d'une part le centrage du carter de l'élément thermostatique de travail (37) et forment d'autre part des canaux d'écoulement pour l'eau qui s'écoule.
7. Dispositif selon la revendication 6, caractérisé en ce que les voiles intérieurs (41) du support (40) dépassent de sa partie tubulaire dans une direction opposée à la direction d'écoulement (32).
8. Dispositif selon l'une quelconque des revendications 5 à 7, caractérisé en ce que l'excentrique (44) ou l'appendice en forme d'excentrique de l'organe de réglage (45) est réalisé sous forme d'un organe à pans multiples, et en ce que le support (40) s'appuie chaque fois par une surface (43) respective sur un des pans multiples qui sont éloignés de distances très différentes de l'axe de rotation (47) de l'organe de réglage.
9. Dispositif selon l'une quelconque des revendications 1 à 8, dont le carter a sensiblement une forme de H, l'une des branches du H étant reliée au tuyau d'eau froide (2) et au raccord d'eau froide du préparateur d'eau chaude tandis que l'autre branche du H est reliée au raccord d'eau chaude du préparateur d'eau chaude ainsi qu'à un tuyau de décharge d'eau mélangée tandis que la traverse du H est parcourue par de l'eau froide, caractérisé en ce que la traverse du H (11) peut être sortie de façon télescopique dans la zone d'au moins une branche du H et en ce que les deux parties télescopiques (49, 50) sont isolées entre elles de façon étanche par au moins une bague d'étanchéité (51).
10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que la traverse du H (11) comporte un raccord (52) pour une soupape de sécurité (53).
11. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'une soupape de sécurité (53), en particulier une soupape de sécurité à membrane, est fixée sur la traverse (11) du H.
EP78100569A 1977-08-10 1978-08-02 Dispositif de mélange d'eau chaude et froide Expired EP0000768B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE7724834U 1977-08-10
DE7724834U DE7724834U1 (de) 1977-08-10 1977-08-10 Mischvorrichtung fuer kalt- und warmwasser,

Publications (2)

Publication Number Publication Date
EP0000768A1 EP0000768A1 (fr) 1979-02-21
EP0000768B1 true EP0000768B1 (fr) 1982-07-28

Family

ID=6681565

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100569A Expired EP0000768B1 (fr) 1977-08-10 1978-08-02 Dispositif de mélange d'eau chaude et froide

Country Status (3)

Country Link
EP (1) EP0000768B1 (fr)
DE (1) DE7724834U1 (fr)
IT (1) IT1109180B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8921647D0 (en) * 1989-09-26 1989-11-08 Belfield Geoffrey Thermostatic temperature regulator valve system
US7744007B2 (en) 2004-11-01 2010-06-29 Honeywell International Inc. Thermostatic mixing valves and systems
US8733666B2 (en) 2008-11-18 2014-05-27 Honeywell International Inc. Thermostatic mixing valve with tamper resistant adjustment feature
US8074894B2 (en) 2008-11-18 2011-12-13 Honeywell International Inc. Secondary mixing valve hot port

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1272062B (de) * 1962-06-26 1968-07-04 Karrer Ag Thermostatische Mischbatterie
DE1288390B (de) * 1965-05-06 1969-01-30 Draeger Gc Regelungstechnik Gm Umschalt-Regelventil
US3610279A (en) * 1970-02-26 1971-10-05 Robertshaw Controls Co Mixing valve construction, system and method
DE2151785A1 (de) * 1970-12-03 1972-06-15 Notte Pier Vincenzo Thermostatventil,insbesondere fuer Kuehlkreise von endothermen Motoren
BE791003A (fr) * 1971-11-16 1973-05-07 Fonderie Soc Gen De Robinet melangeur thermostatique
IT949212B (it) * 1972-02-29 1973-06-11 Knapp Alfons Rubinetto miscelatore termostatico
DE2423374A1 (de) * 1974-05-14 1975-11-20 Grohe Armaturen Friedrich Mischventil

Also Published As

Publication number Publication date
DE7724834U1 (de) 1977-11-17
IT7826624A0 (it) 1978-08-09
IT1109180B (it) 1985-12-16
EP0000768A1 (fr) 1979-02-21

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