DE7242048U - THERMOSTATIC MIXING TAP - Google Patents

Description

SOCIETE GEFERALE DE POFDERIE CAS AU

Thermostatic ^ mixer tap.

The invention relates to a thermostatic mixer tap for "tub-shower" systems.

The invention relates in particular to one

Mixing tap for hot and cold water with links to operate and adjust the temperature of the mixture, as well as mic hand-operated links to adjust the amount of water dispensed. The mixed waaaer can feed either the spout of a bathtub or a shower, ... ·. This is the most frequent application of the faucet according to the invention, but it can of course also find other applications which require the same operating conditions.

After setting the flow rate and the temperature of the table water, two conditions must be met met no to a bofriodigunde thermostatic ^ regulation to obtain.

First and foremost, the pressure drops between the Spciselcitungon and dur iliyehkarumcr mögllchat grosa

because an internal pressure, which ifa Vferhjlini's, * zuj d * e * i "feed pressure is high, can disrupt the temperature control.

In the second place, since regulation is generally carried out by moving a slide, the Stroke of the same should be as small as possible in order to achieve fast regulation su enable. With low flow rates (use of the Shower) a reduction of this RegeXhubes is desirable.

If P is the feed pressure, Pm is the pressure of the mixture immediately downstream of the control valve and DP is a change £ ds pressure P can be the factor of imbalance of the Regulation can be expressed by the expression DP / (P-Pm). This! Factor for Pm is therefore purely certain values of P and DP proportional. A lower pressure of the compared to the feed pressure <Mixtures, or in other words a high pressure drop P-Pm, is therefore essential to ensure proper control

With the known thermostatic faucets, the amount of water dispensed is either regulated vox 'the rule sone, or behind the same *

If the regulation of the flow rate is

mungsaufwarte takes place »the total stroke of the control slide does not change as a function of the flow rate and generally remains constant. This results in an unsatisfactory temperature control

Venn the regulation of the flow rate behind

₍ As a rule, the pressure drops change in the same direction as the flow rate. When used for the tub, which requires large flow rates, the pressure drops rise and the tap works correctly. This is no longer the case when used for the shower, at which the required flow rate is significantly smaller. \ 1eaxi namely the amount of water dispensed decreases, the internal pressure of the mixture increases and the pressure drop decreases. When the cock is closed, the internal pressure is equal to the feed pressure Regulation is poor, while the greatest sensitivity to control is desirable when using the shower.

In addition, the taps remain after the closure

with a downstream solution: with water filled and become inoperative at 7rost

The regulation made downstream

the flow rate has another disadvantage. She forces Provide check valves, which reduce the manufacturing costs of the Hahns increase. These valves are designed in such a way that they allow the flow medium to pass through only in one direction and thus «Prevent the mixed water from flowing back to the feed lines. If the system is not used during winter the tap must be drained completely and the non-return valves must be removed

The thermostatic cock according to the invention is intended to remedy these disadvantages. Sr also has it peculiar parts.

The inventive thermostatic mixer tap has a body with two inlet openings, which in an entrance chamber for the cold water or an entrance hall More for the warm water open, a mixing chamber and an opening for the discharge of the mixture, means for adjusting the temperature by hand with a thermostatic cell for control the temperature of the mixture, and manually operated means for adjusting the amount of water discharged.

This faucet according to the invention with a YerecAluse member, which is controlled by the thermostatic cell and between a foot connected to the body ί · - (stan part g & d a duroh the mentioned hand-operated means actuated adjustable stop versohieblioh let, let daduroh marked that the entrance chambers for the cold and the warm water comprise annular compartments, which are arranged around the movable tersole member which is connected to the called fixed part and the adjustable stop two openings variable cross-section, which connects the mixing chamber with the intake chambers for the cold water and the warm wae-ber *

The position of the movable stop determines the amount of water by determining the sum of the cross-sections of the two openings under consideration. On the other hand, that determines Position of the union member the relationship of these two

Cross-sections for a given

The arrangement of the entrance chambers as annular compartments surrounding the closure member makes this possible Connection element practical for the fluctuations in the feed pressures to make the cold and warm water insensitive. Dieρ ^ So training ensures a perfect equilibrium of the locking member? which is a major benefit of the invention.

Furthermore, this formation keeps the iTUOkverluate constant for any amount of water dispensed. The stroke of the closing element a forming a slide decreases at the same time as the amount of water dispensed, so that the internal pressure remains completely stable. The erfindungagetiäsae ^{r <} \ hn thus ensures excellent control with any flow rate _t, especially in the "shower" position.

According to a preferred floodplain, the drove uniformly Invention, the Verachluiiaglied a seal, which the tightness between the input chamber η for then cold and Maintaining the warm water, bow! ”Ulohtun ^ an xur maintaining the tightness mwieohen <1leu "n chambers and there tiiachkammer in the base of the outer valley curve, ■

DIeBD Dloht-urifen varmeliien α in "ti" Ruh.run "swi ~ fled metals, their tightness. nUomU «o 1.1 Ιιυ.ΐίπιβπ Lat, oo dana Rüakeohlagventlle wished to overflow.

Game, · a oLn «r ami« ma before U ι l hi * rti «n Execution afortn der bJrflndur.4 be Ή« itiln ^ an ^ Hliuitimarrt for dad cold and dae warm waaaer tlurnli Lu lan Lnrptii · «ι η $> * * Λ \, * te ^ LnM *) limited. Dieee Rln ^ e "rLaIoIit 'ru Ή"AuabiMuriÄ> \ mm M. ilina uml oenkän the (J ο α _t; ^ III in ispra 1 α i1oea "lh" n, Λ »<* \ * U" t.Ul «Mill U ilet Lap tel ige BeaX" -bdlturif.ctn In ii'ort fall lirlnücju,

Uli. i'.rf iniluii /, 1 ..ι ι. u,;.: \\ a ! .nlu'iiii uritnr De κ ug would take on dl « 'IfO 1 fihni α / .; brs 1 .ei ρ ti 1 r, nn 1 bn r nrlm fcn-rt ..

Vie.- 1 If '· oLn AxLaLy ₁ hui ti a ^ a thermoetati-Bchen Miaehhahntj aylindriacher form.

Fig. 2 is an axially sectioned partial view

det Verachluesßliedea and dea stop in the closed position in grosseci hate rod.

Fig. 5 is one of the Pig. P more appropriate

Cut with the tap open. ,,;. · ,, ··, ·. ,,::

Pig. 4 is a "front view of the exterior. FIG Advisory members.

Pig. Figure 5 is a section on line V-V of Pig. 1 and shows the type of spraying of the movable stop

Pig. 6 is a pig. 1 similar cut

Partial view with parts broken away, showing an embodiment modification of the closure member.

Pig. 7 is a section similar to section V-V of pig «1 Sectional partial view of an embodiment modification of the type of guiding of the movable stop

When executing the Pig. 1 to 5, the thermostatic mixer tap has a cylindrical body 1 with an inlet opening 2 for the warm water, which in a hot water chamber formed by an annular compartment 3 opens, an inlet opening 4 for the cold water, which opens into a cold water chamber formed by an annular compartment 5, and a discharge opening 6 for the mixed water. The inlet chambers 3 and 5 are separated by a ring 7 which is glued tightly into the body 1. On the body 1 is a Screwed on cap 8, a sealing ring 9 producing the seal between these two parts.

The parts that control the flow rate of the tap are described below.

A rotatable nut 10 is in the cap 8 so

( used so that it abuts against a sleeve 11 embedded in the body 1, with a seal 12 being provided. A rotatable operating handle 13 is placed on the nut 10, which in turn is rotatable about an axial annular screw 14 through a thread 15 which allows translational shifting of the screw by rotating the operating handle 13. A sealing ring 16 is recessed in the screw 14 to create the seal with the nut 10. Openings 17 »18 formed in the screw and the cutter maintain a uniform water pressure in the tap. The screw 14 has a shoulder 14a which can strike the nut 10. The head of the screw 14 also has longitudinal grooves 19, into which an adjusting washer 20 engages, which is an axial

- -ceo

Opening with corresponding grooves ΐ> ο ait 2 Ir ,. ¹ «« Lc he: between the grooves 19 of the thrust pipe 14 »whereby a stop 21 limits the rotation of the actuating handle 13 thanks to a pin 22 attached to it. The adjusting disk is lengthened by an annular band strip 23, which slides in a groove 24 formed in the handle 13 when the screw 14 is axially displaced. Pig * 4 shows that handle 1? a rake 13a. has, which is braoed in the Sohlieesungsstteilung dos Hahns. The setting disk 20 has three zones A * B, C. DIt) Zone A corresponds to the use of "shower" and zone B to use of "tub", while the annular zone C, divided into degrees Celsius (not shown), is used to set the temperature.

(A section of the annular screw 14 slides in the socket 11 and can strike the nut 10. The Cross-section of this portion of the screw has a hexagonal cross-section 25 (Fig. 5), the edges of which 26 In in the socket trained longitudinal grooves 27 engage. The end 14b of the screw let inserted into the corresponding internally threaded end of a sleeve 28 forming a stop. The sleeve 28 has a collar 29 and an annular opening 30 and can in one in the body 1 with the interposition of one the cold one Water from the mixed water separating seal 32 glued Hing 31 slide.

Like Pig. 1 shows, the ring 31 separates the cold » water chamber 3 of one in the outlet opening 6 opening annular discharge chamber 33.

A compensating spring 34 is supported on the.

Sleeve 11 and exerts a force on the collar 29 that makes it seeks to approach the ring 31. When the boat is closed is the stop 28 in tight contact with an annular closure member 35, which is on an annular Gate 36 of the body 1 and supports the entrance departments 5, 3 (Fig. 2) for the cold or warm water closes. if When the tap is open, passages X between the stop 28 and your closing element 35 or Y between the closing element and the projection 36 allow cold water or poor water to enter a mixing chamber 37.

■ t »♦ * ·

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lit ···

sole smooth 3? trained seals 38, 39 »40 effect the Sealing between the entrance chambers on the one hand and between these chambers and the mixing chamber 37 on the other hand.

As can be seen (Fig. 1), this latter chamber 37 is with the outlet opening 6 through the annular opening 30 and the discharge chamber 33 in connection *

The following are the operating elements and described for regulating the temperature of the mixture *

An axle 41 is inserted into the axial screw 14, which is extended by a jacket 42 and carries a sealing ring 43. A rotatable handle 44 is placed on grooves 64 of this axis and fastened to it by a screw 45. The shell 42 includes a cylindrical portion 46 with a circular "threaded protrusion 47". This protrusion engages a corresponding internal thread in the shell 42 by means of this thread. The part 46 can thus slide in the casing when it rotates, this translational movement being guided by an inner hexagonal contact surface of the end 14Jb of the screw 14, in which a projection 43 of the part 46 slides.

The part 46 has an axial cylindrical

Recess 49 which is extended on one side by an opening 50 and closed on the other side by an attached ring 51 The recess 49 contains a circular, longitudinally displaceable cage 52, which serves on one side to support the end of a thermostatic cell 53 and on the other hand, is under the action of a safety spring 54 supported on the circumference of the opening 50. The thermo β tails before ropes 53 is axially inserted into an element 55 with collars 56, 57, 58 with graduated diameters. The last collar 58 is glued to the closure member 35. A reinforcing ring 59 is fastened to the closure member, and a helical spring 60 supported on the body 1 exerts a thrust on the closure member 35 which is opposite to that of the safety spring 54.

The closure member 35 »the intermediate element 55 and the thermostatic cell 53 form a one-piece arrangement.

tion, which can leave a translational movement unjudged and the exposed to opposing forces of the springs 54 and 60 1st.

The elements for regulating the flow rate work as follows:

When the tap is closed, the operating handle 13 is in Pig. 4 by the identification mark 12a indicated position, and the closure member 35 is through the stop 28 (Pig. 2) is held on the projection 36.

When the bed operation handle is rotated in the direction K (FIG. 4), the identification mark 13a is displaced. initially in zone A. This zone corresponds to the area of use for the shower, ie relatively small flow rates. For use as a room, it is namely desirable to limit the flow rate in order to avoid excessive counter pressures in the tap. When the handle is turned further, the identification mark 13a moves in zone B, which corresponds to large flow rates and normal use for the tub. At the end of this zone, the rotation is stopped when the pin 22 comes into contact with the stop 21 (Pig. 1).

The rotation of the handle 13 translates the annular screw 14 across the patterns 10 in the sense of removing the screw from the locking member. Passages X and Y are then exposed between the closure member, the body 1 and the movable stop 28 (Pig. 3). Cold water passes through passage X into the mixing chamber 37, as does the warm water through passage Y. The amount of mixed water dispensed is proportional to the distance (X + Y) by which the annular stop 28 has moved »the closure member 35 can then adjust between the stop 28 and the body 1 and thus regulate the ratio of warm water / cold water.

As a numerical example it should be stated that the entire The control stroke (X + Y) of the tap according to the invention is only a few tenths of a millimeter »

The temperature of the washing water is set and controlled as follows:

By turning the temperature handle 44

V. ,, set the desired temperature on the BeröioK Cf of 20 (Pig. 4). Rotation of the handle 44 causes the internally threaded shell 42 to rotate so that the portion 46 translates within the shell. The closure member 35 is then given a specific position in the longitudinal direction by means of the element 55 on the thermostatic cell 53. The position of the closing element regulates the ratio X / Y between the cold and warm water and thus the temperature of the mixed water. Each position of the handle 44 thus corresponds to a specific position of the closure member 35 and thus a set temperature.

After the temperature has been set, the flow rate is changed by rotating the handle 13, the stop 28 moving away from or closer to the closure member, depending on whether the flow rate is increasing or decreasing. The amount of one of the supplied types of water therefore suddenly increases, v / as the temperature of the mixture g <^ n / ^. eggs set on the dial 20. Seeks to change temperature. The regulation around this set temperature then proceeds as follows:

As the space X increases, an additional amount of cold water enters the mixing chamber 37. The thermostatic cell, which is known per se and contains an expandable wax, contracts. This contraction brings the closure member 35 closer to the stop 28 and thus narrows the passage X for the cold water, with the passage Y for the poor water being widened at the same time. The temperature of the hot water is therefore brought back to the set fourth. UmgcV -t narrows with a decrease in the flow rate at space X, and the thermostatic cell receives an excess of warm water , which expands uie. This expansion narrows the passage Y and tries to bring the temperature of the mixture back to its previous value.

When the temperature adjusts to such a value is, cUu-is aur warnnjs water enters the tap, is located ler part 46 at the end of the stroke in the jacket 42 in the direction on the temperature handle 44. The thermostatic cell 52 expands

the strongest without kornmen with denrKgfigi 52 ih.Beriuurang, and the control spring 60 holds the locking member 3 * 5 on the Stop 28. On the other hand, the safety spring 54 absorbs the expansion of the thermostatic cell. If, conversely, no warm water flows in, the safety spring holds the closure member 35 on the projection 36. The operational safety is ensured as follows:

If the tap delivers cold water and the cold water is suddenly turned off, the thermostatic cell 35 expands and closes the inlet 3 for the hot water Water. The cell expands even further and presses on the safety spring 54, which takes up this additional expansion. So the presence of this spring prevents it from getting in In this case, the thermostatic cell is caught between two fixed stops and destroyed.

If, on the other hand, the warm water is suddenly shut off, the cell contracts and the closure member 35 closes the Kaitwasserzuflues. "It is held in this position by the action of the balancing spring 60. The cell pulls together further and removes eioh from the cage 52, which, however, has no harmful effect

Experience shows that the inventive setting of the amount of water supplied, i.e. the regulation the sum of the passage sections for the cold and warm water from the edge, results in a very satisfactory thermostatic * control for any given amount of water and storage pressure. One sets feet that the regulation is special for the amount of water corresponding to area A of FIG. 4 (use as a whole brow). The result is through the simultaneous reduction in the stroke of the slide forming the closing member and the flow rate obtained, the Reducing the stroke of the slide keeps the pressure drops constant.

Furthermore, as already mentioned above, the fact that the entrance chambers 3 »5 are ring-shaped and surround the closure member 35 concentrically makes the position of the same of Fluctuations in the feed pressure of the warm and cold water independently and thus keeps the sealing member 35 in a fully

7242841 -i.e.?*

coming balance.

The advantage of the seals 38, 39, 40 in the

Closure member 35 "consists in making an excellent one Sealing between the input chambers on the one hand and between these chambers and the mixing chamber on the other hand. she avoid »namely contact between metal parts, their The tightness always leaves something to be desired. The suction valves are also superfluous, as the tap is closed at the point of the entrance chambers and not behind them. H & oh when it closes, the tap is in contact with the outside air and therefore does not accumulate water. There is therefore no risk of destruction by freezing *

The compensating spring 34ι whose force is something

is smaller than a · a of the control spring 60, reduces the actuation of the handle 13 required to adjust the flow rate and realizes an instant production the balance between pressures *

The leadership of the annular screw 14 at their translational movement improves the accuracy of the adjustment The bottom link 35. However, it is not necessary for the correct operation of the thermostatic valve according to the invention essential.

The usage zones A and B for the shower or the hot water, which can be calibrated on a non-rotatable adjustment plate, enable the flow rate to be adjusted to the correct values according to the supplied flow circle. 5 adjustable temperature range 0 let also comfortable for the user

9ig. 7 shows another possible form of the

Guide of the screw 14. In this variant embodiment, it is weathered the sleeve 11 has an inserted wedge 61, weloher in an in the portion 14b of the screw formed groove 62 slides.

An export modification of the connection

member 35 is shown in Pig * 6. The three seals 38, 39. 40 are here by a single seal molded in the Permian 63, which surrounds the locking link on three sides Execution simplifies the processing of the closure link, they make an equally complete seal

7242841-ίΛΗ

As previously shown.

The invention can of course be modified. Thus, the adjustable stop 28 and the annular screw 14 may form a single integral part, depending on the type of NAC ^v gewMten processing. Me screw U does not need to be guided even during its translational movement. Likewise, the hinge 7 and 31 can be fastened in the body of the tap in any other way than gluing, for example by welding.

Claims (11)

jinspruohe 1.)! Thermostat is a Misohhahn with a body (1) with two inlet openings (2, 4), which in an inlet chamber (5) for the cold water or in an inlet chamber (3) for the warm water mouth »a mixing chamber (37) and an opening (6) for discharging the Gemisohs, means for adjusting the Temperature by hand with a thermostatic cell (53) to control the temperature of the mixture »manually operated means for Adjustment of the amount of water exiting and with a closure element (35) »which is controlled by the thermostatic cell (53) is controlled and between a fixed part (36) firmly connected to the body and a controllable stop (28) which can be actuated by said manually operated means is characterized in that the entrance chamber for the cold and warm water, respectively, comprise annular compartments (5 »3) which are arranged around the movable closure member (35) associated with said fixed part (36) and the adjustable stop (28) defines two openings (X, Y) of variable cross-section, which the mixing chamber (37) with the Entrance chambers (3 or 5) for the cold or warm water in Set connection· 2.) Thermostatic mixer tap according to claim 1, characterized in that the inlet chambers (5 or 3) for the cold or warm water are inserted into the body (1) Rings (7> 31) are limited 3) Thermostatic mixer tap according to claim 1, characterized in that the movable closure member (35) has a seal (39) for producing the seal between the Inlet chambers (5 or 3) for the cold or warm water and Seals (33, 40) for producing the seal between these chambers (5> 3) and the mixing chamber (37) in the closed position. 4.) Thermostatic mixer tap according to claim I _9, characterized in that the movable closure member (35) has a seal (36) which seals between the input chambers (5 or 3) for the cold or warm water on the one hand and between on the other hand, produces these input chambers and the mixing chamber (37) in the closed position. 7242041-18. » 5.) Thermostatic mixer tap according to claim 1, With a spring (60) supported on the body (1) for adjustment the position of the movable locking element (35), characterized by a Ausßleiohsfeder (34) ^ which on a fixed part (11) attached to the body and on the movable stop (28) exerts a force which practically equilibrates the action of the adjusting spring (60) holds. G.) Thermos tat i shear mixer tap according to claim 1, characterized in that the movable stop by a Ring (28) is formed, which perform a translational movement can· 7.) Thermoε * atiseher mixer tap according to claim 6, characterized in that the Hing (28) fixed to an axial adjustable annular screw (U) is connected, the rotation of which is attached to an operating handle (13) Mother (10) is effected. 8.) Thermostatic mixer tap according to claim ^, characterized in that the annular screw (U) is guided in a sleeve (11) attached to the body. 9.) thermostatic mixer tap according to Anopruch 8, characterized dt-ss the screw (U) by eiixe polygonal Contact surface (25) is extended, the edges (26) of which engage in corresponding grooves (27) formed in the sleeve (11). 10 ·) Thermostatic mixer tap according to claim 8, characterized in that the screw (U) has at least one guide groove (62) into which a protruding. Part (61) of the sleeve (11) engages. 11.) Thermostatic mixer tap according to claim 1, in particular for bathtubs, characterized in that the gowns for setting the amount of water dispensed ID tags which delimit an area for the use of the shower and an area for the use of the bathtub.