MXPA00009661A - Thermostatic mixing valve with sequential manual control - Google Patents

Abstract

A thermostatic mixing valve (10), includes two inlet ports (20, 22) for cold water and for hot water, a mixing chamber (59), passages (30, 31) between the inlet ports and the mixing chamber, an outlet passage (33) and port (34) from the mixing chamber for the mixed water, a thermostatic element (64) arranged at least partly in the mixing chamber and a distribution slide valve (44) controlled by the thermostatic element. The two inlet passages and the outlet passage are made in a central body (28) arranged inside the distribution slide valve in which the distribution slide valve is arranged so as to modify the passages between only one of the inlet passages and the mixing chamber. A sequential manual control valve (80) is inserted so as to control the two inlet passages. The sequential manual valve comprises a fixed plate (82) and a rotatable plate (84) mounted in such a way that it can be rotated on the fixed plate.

Description

THERMOSTATIC MIXING VALVE WITH SEQUENTIAL MANUAL CONTROL Technical field This invention relates to a mixing valve for cold water and hot water of the type that includes a thermostatic mechanism and a manual control mechanism that acts on the inlet openings that pass cold and hot water to a mixing region.

BACKGROUND OF THE INVENTION According to the Italian patent No. 1,107,182 by the same inventor, a thermostatic nozzle includes a mixer with manual control that sets a mixing ratio between cold water and hot water and a thermostatic mechanism that, depending on the actual temperature, controls a valve of choke inserted in the hot water supply to the manual control mixer to modify the fixed mixing ratio, in order to maintain within a certain range the temperature of the mixed water that is actually distributed. According to the Italian patent No. 1,279,194, by the same author, a thermostatic nozzle includes a mixer with manual control that sets a mixing ratio between the water Ref: 122568 cold and hot water and a thermostatic mechanism that, depending on the actual temperature of the mixed water, controls a throttle valve inserted in the cold water supply to the manual control mixer to modify the fixed mixing ratio in order to maintain, Within a certain range, the temperature of the mixed water is actually distributed. Both of these mechanisms incorporate a certain separation material between the manually controlled mixing valve and the thermostatic mechanism, which complicates its design and installation. According to Italian Patent No. 1,227,378, a thermostatic mixing mechanism, which also can operate as a nozzle including openings for cold water and hot water, placed on the sides of a central outlet duct. A mixing chamber receives the water from the hot and cold inlet paths and a thermostatically controlled distribution valve operates to control, opening and closing in opposite directions the regulated cold and hot water inlet paths to maintain, within a true and adjustable range, the discharge temperature of the mixed water. This mechanism can be provided with a valve that controls the volume flow to manually and simultaneously change the useful opening of the hot and cold water inlet pipes.

The valve controlling the volume flow controls only the volume of flow, but has no effect on the mixing or relative proportional action of hot and cold water flow. This mechanism presents a general and particularly advantageous structure, although it brings with it the discomfort that the regulation of temperature is quite poorly sensitive and gives rise to a phenomenon of provisional overregulation (it is referred to as an 'overshoot'). Occasional overshoots occur when in motion from the temperature adjusting mechanism to a position corresponding to a given temperature, one initially achieves an effective change of discharged water temperature which is considerably more than the desired change.The desired temperature change is reached only after a period of time , after the thermostatic mechanism has a change to compensate.The temperature adjustment, controlled by the thermostatic element, is acquired by manual control of the position of the thermostatic element and the distribution valve that is operated connected to it, which directly affects the opening of the respective water inlets hot and cold BRIEF DESCRIPTION OF THE INVENTION According to one aspect of this invention, a thermostatic mixing valve can alternatively be used as a thermostatic nozzle or as a thermostatic mechanism for feeding one or more apparatuses, each of which is provided with its own nozzle, or with one or several nozzles installed downstream of the thermostatic mechanism. The thermostatic mixing valve combines the advantage of prior art mechanisms without linking the installation or inconveniences of thermostatic overdrives. In particular the invention is a structure that is easy to make and install and ensures a high degree of sensitive adjustment. Additionally this can provide a guarantee against the excessive distribution of hot water, also in the presence of abnormalities in the water supply and, when used as a thermostatic nozzle, it incorporates a manually operated sequential type control valve, mounted in series with the thermostatic valve. Preferably, the thermostatic mixing valve consists of two inlet openings for cold water and hot water, a mixing chamber, paths between the inlet openings and the mixing chamber, a discharge opening of the mixing chamber for water mixed, a thermostatic element positioned at least in some way in the mixing chamber, and an annular sliding distribution valve controlled by a thermostatic element. Both inlet openings and discharge opening are in a central body, radially inside the annular slide distribution valve. The annular slide valve is positioned to restrict the path between only one of the inlet openings and the mixing chamber. A sequential type mixing and flow control valve with manual control is mounted to control the two inlet openings. The adjustment of the discharge water temperature is manually set by the action of the manually operated sequential type control valve, for the flow and mixing action without the manual action that directly changes the position of the thermostatic element, and the valve Slip distribution, so that one can systematically eliminate the phenomenon of provisional overshoots. Furthermore, the action of adjusting the sliding distribution valve, controlled by the thermostatic element, always works in a direction that counteracts the direction of the manual action, therefore its effect is limited. The consequence of two counteracting activities is that one must make a longer movement of manual control to achieve a desired change. The adjustment degradation is prolonged and the profile of change is favored. The speed and accuracy of the thermostatic adjustment is then enhanced by the fact that the slide distribution valve works to effectively restrict or increase the flow in the cross section of only one of the inlet openings, so that mixing takes place due to to the addition or restriction of only one flow to the volume of the other flows instead of through the inverse variation of the volume of the two flows. In cases where the valve is used as a nozzle, the operated sequential valve also manually intercepts or interrupts the distributed volume, functions as a non-return valve, and adjusting the flow rate within certain limits. But the manual sequential valve inserted into the water supply lines can also be used as a thermostatic adjustment mechanism, for a water supply flow going to one or more devices, each of which is provided with its own inserted nozzles in the water levels downstream of the thermostatic valves. In these cases, the manual control valve for the thermostatic valve is adjusted only to determine the desired temperature and not to intercept an interrupted or regulated flow of water. In cases where one must ensure an upper limit of the temperature of the discharge water, the slide distribution valve is positioned to regulate, by the action of the thermostatic element, the cross-sectional area of the path through which the water passes. from the relevant entrance to the mixing chamber. On the other hand, in cases where it is not necessary to limit the discharge water temperature (for example, because the hot water supply is provided at a limited or non-hazardous temperature), the slide distribution valve can also be placed to regulate, by the action of the thermostatic element, the cross-sectional area of the path through which the cold water passes from the relevant opening to the mixing chamber. Preferably, when the valve is projected to be used as a thermostatic nozzle, the manually operated sequential valve includes a pair of valve plates, preferably made of firm material with openings therethrough. First a fixed plate and second a movable plate are in sliding contact with each other. The openings in the plates are positioned to ensure in the succession of the position of an interruption or of an interception, a range of sequential opening positions of the relevant paths for the cold water, while retaining the closure of the path for the hot water , a range of positions for the sequential opening of a path for hot water, while retaining the complete opening of the path for cold water and, finally, a sequential closing range of the path for cold water, while retaining the full opening of the path for hot water. The two plates, each one has an exit opening that is permanently open to the mixing flow.

As an alternative, the two position ranges can be repositioned for a simple range of positions in which a sequential opening of the paths for the hot water takes place and simultaneously a sequential closure of the paths for the cold water. The sequential action can be acquired, for example, with a valve plate structure, having as a first plate that is symmetric with respect to the diameter of the openings therethrough and with a second plate being constructed asymmetrically with respect to a diameter of its openings, cooperating with the first opening plate. This is immaterial if the first plate is fixed and the second plate is movable or vice versa. In a convenient particular arrangement, the sequential valve includes a fixed base plate projected to be mounted in a supply and delivery housing, and a rotating plate rotatably mounted on the base plate and operated manually. Preferably, the fixed base plate is mounted in the supply and delivery housing and the movable part is mounted on a rotating body of the valve and operable by a handle, lever or button. The valve can be provided with an adjustment to determine and adjust the maximum temperature at which the distributed water can be adjusted. The regulator adjusts the resting position of the thermostatic element and the sliding distribution valve connected to it. This mechanism may include a cap that can be rotated by manual action, mounted through a threaded operation connection to the rotating body of the valve. As the lid is rotatable relative to the rotating body, the lid also axially moves the point of support to the thermostatic element. According to a further aspect of the invention, a thermostatic mixing valve has a base having two supply openings and a rotary body mounted on the base and operably connected to a first valve surface, with a first and second inlet opening through it, which are operably positioned adjacently the two supply openings to control the volume flow into the housing. A second valve member is annular in shape and movable toward and away from an annular seat in the vicinity to restrict and control fluid only from the entry path. The first inlet passage passes through the annular seating surface within the annular extension of the annular valving surface, and having a downstream end in the fluid communication with the annular seat and the annular valving member, for providing a first annular flow path between the annular seat and the annular valving member, from radially within the annular valving member to a radial outlet of the annular valving surface to the mixing chamber. The first inlet passage is sealed within the interior of the annular valving surface, with respect to the second inlet passage from the supply openings to the mixing chamber. A thermostatic element is axially movable, disposed within the mixing chamber and operably connected to the annular valving surface to move the annular valving surface axially into and out of the annular seat to restrict controlling the flow that is formed, only the first path of entry into the mixing chamber in response to the temperature of the fluid in the mixing chamber. The mixing chamber is in communication with the fluid with an outlet that ends there. Preferably, the annular seat opposes an annular end of the annular valve member. The second inlet passage passes through the first seating surface and through the interior of the annular valving surface, into the radial extension and the valving surface and having a downstream end in the fluid communication without restriction with the mixing chamber. Alternatively, the second entry path ends below the annular valving member, to allow free flow without restriction around the annular valving member to the mixing chamber and the annular seat is positioned above the valving member and the first entry passage passes through the interior of the annular valving member. Preferably, a return biasing spring is mounted within the radial limits of the annular valving member, to an axial movement of the annular valving member in the contraction of the thermostatic element. In one embodiment the return biasing spring is mounted on the top of a central body within the rotating body.

BRIEF DESCRIPTION OF THE DRAWINGS The reference is now made to the accompanying drawings, in which: Figure 1 is a side elevational view segmented, illustrating a first embodiment of the thermostatic valve according to the invention; Figure 2 illustrates one embodiment of the fixed plate for the sequential manual operation valve for controlling the flow and mixing action, shown in Figure 1; Figure 3 illustrates a modality of the movable plate for the sequential valve of manual operation; Figure 4 to 7 illustrates the movable plate of Figure 3 rotated in various adjustment positions in the fixed plate of Figure 2; and Figure 8 illustrates a segmented view similar to that of Figure 1, displaying a second embodiment of the thermostatic valve according to the invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to Figure 1, a thermostatic mixing valve 10 includes a rotary handle body 12, which is rotatably mounted in the fitting of the pipe or other appropriate pipe fittings 14. The pipe fitting 14 includes a cold water supply 16 and a supply of hot water 18. The rotary handle body 12 is rotatably mounted to a base nozzle 17, which is glued inside the accessory 14 by protection 19 inserted in the seat 21 of the fitting . Body 12 is retained at base 17 by the threaded ring 23 inside the seat 21 of the fitting 14. The seals 13 are seated on the base 17 around a cold water inlet opening 20 and a hot water inlet opening 22. The rotating body 12, contains an inner frame 25 0 that can be mocked with an operable handle 26, preferably made of thermal insulating material, formed in this way to facilitate manual operation for rotation of the rotary body 12, within the frame 25 there is placed a central body member 28, which it is fixed to the frame 25 5 by rotation with itself. The central body 28 is projected to cooperate with an annular slide distribution valve 44. The inner body member 28 has a cold water inlet path 30 aligned with the cold water inlet opening 20, and an inlet path hot runner 31 aligned with the cold water inlet opening 22. A central mixed water outlet 33 is in communication with the discharge opening 34 and outlet 36 in the fitting 14. The path 30 has a downstream end annular shape adjacent to the seat of the valve 40. The downstream end is also adjacent to an upper discharge peak valve 42 of an annular slide valve 44. The downstream end 46 of the hot water inlet 31 is annular in the shape and is unrestricted by the wide space between the lower end 48 of the valve 44 and the opposite annular surface 50. There is also a sufficient annular void between the rotating body 25 and the void valve 44 and its ring that was mounted 57 to provide an unrestricted path to the flow opening 57 and inside the mixing chamber 59. The seat valve 40 is secured to the inner body member 28. The path 30 passes axially to through the annular valve 44 within its radial limits. The inner body member 28 has a seated intermediate seal 52 that seats a gasket 54 that seals out the path 30 from the 31 within the axial extension of the annular slide valve 44. The annular slide valve 44 sticks to the ring 56 through a threaded gear 58. The ring 56 and the slide valve 44 profile the mixing chamber 59, between the flow openings 57 and the mixed water outlet 33. A spring 60 is mounted inside the annular valve 44 and the ring 56 and sits on top of seat 40 at the top of central body 28. Spring 60 tilts valve 44 to fit seat 40 and close path 38. Ring 56 extends above of the inner body section 28 and operatively glued through a safety spring discharge ring 72 and the spring 74 to the body section 62 of the thermostatic element 64. The thermostatic element 64 has a piston extending the leg 66 which engages an embedding member 68 which is mounted on the adjusting handle 70. The adjustment handle 70 has a threaded connection 76 to the frame 25 and an appropriate seal 75 for the mechanical increase and decrease of the thermostatic assembly within the frame 25. The body section 62 may extend within the central exit passage 33 and the internal body 28. The mixing valve includes a valve that controls the flow velocity 80., which includes two ceramic disc plates 82 and 84. The fixed ceramic disc plate 82 is mounted to the base 17. The rotating (or movable) ceramic plate disc is mounted to a bottom of the central body 28. Sequential valve controlling the flow rate 80 is mounted upstream from the annular slide valve 44. The ceramic disk plate 82 has respective openings for supplying cold and hot water 86 and 88 and a localized mixed water outlet opening in the center 90. The ceramic disk plate 84 has a cold water inlet 92 and a hot water inlet 94 and an outlet opening located in the center 96. The opening 96 is in constant alignment with the outlet opening 90. of the ceramic disc plate 82 and the central outlet passage 33 of the body 28 and discharge opening 34. The rotation of the handle 26, and the frame 25 with the central body 28 rotates the ceramic disc plate 84 with respect to the p disc lacquer 82 to selectively align or misalign the inlets 92 and 94 with the inlets 86 and 88 to control the flow velocity of hot and cold water. As clearly illustrated in Figure 2, the openings 86 and 88 of the fixed plate 82 are positioned symmetrically with respect to a central diameter 96 of the fixed plate. The openings 86 and 88 are arc-shaped, forming grooves. Other forms can also be used. The openings 92 and 94 of the movable plate 84, as illustrated in Figure 3, are asymmetric with respect to a central diameter 98 of the movable plate 84. The diameter 98 of the movable plate 84, when the plate 82 and 84 are in an intercept or interrupted position, as shown in Figure 4, corresponds to the diameter 96 of the fixed plate 96. It is also possible to select other arrangements of the openings 86, 88, 92 and 94 which are equally appropriate to carry approximately correct operation (specified above). In addition, the plates 82 and 84 can change places, such that the plate 82 with its openings can become movable and the plate 84 with its openings can become fixed. The plates 82 and 84 together provide the sequential adjustment of the flow and the mixing action, cooperating as shown in Figures 4 to 7, as a function of the rotation imparted to the rotary body 12 of the thermostatic valve with respect to the fixed base 17. In Figures 4 to 7, the two plates 82 and 84 are shown with the movable plate 84 superimposed on the fixed plate 82. The openings 92 and 94 of the movable plate 84 in this manner are in view, while the openings 86 and 88 of the fixed plate 82 (marking the lines similar to graph paper) are completely or partly covered by the movable plate 84. In the position illustrated in Figure 4, the openings 92 and 94 of the movable plate 84 they are completely aligned from the openings 86 and 88 of the fixed plate 82. This is, therefore, in a position to intercept or interrupt. On the other hand, the discharge outlets 90 and 96 are permanently aligned in this position, as in all other positions of the plates 82 and 84, so that the outlet path 33 of the central body 28 of the valve permanently communicates with the discharge of outlet 36 of the accessory 14. In the position illustrated in Figure 5, the movable plate 84 has been rotated by a certain angle in a counterclockwise direction (along the arrow 100) with respect to the position in Figure 4. In the entire range of the postures, between the postures shown in Figures 4 and 5, the opening path 92 of the movable plate 84 becomes partly or totally aligned with the opening 86 of the fixed plate 83, while opening 94 of movable plate 84 retains full alignment with opening 88 of fixed plate 82. Therefore, in the rotation from the position in Figure 4 to the position in Figure 5, there is a speed of flow or progressively increasing that is offered to cold water, while the hot water remains intercepted or interrupted. In the position illustrated in Figure 6, the movable plate 24 is further rotated by a certain angle in the counter-clockwise direction (along the arrow 100) with respect to the position in Figure 5. In the entire range of the postures between the positions shown in Figures 5 and 6, the opening path 94 of the movable plate 84 becomes partly or totally aligned with the opening 88 of the fixed plate 82, while the opening 92 of the movable plate 84 continues to substantially retain complete alignment with the opening 86 of the fixed plate 82. Therefore, in the path of rotation from the position in Figure 5 to the position in Figure 6, there is one of flow rate progressively increasing that is offered to hot water, while the path offered to cold water remains completely open. In this way there is a progressive addition of hot water to cold water. The axial profile in Figure 1 shows the paths for both cold water and hot water as they open, which corresponds to the profile marked along line II shown in Figure 6. Finally, in the position shown in Figure 7, the movable plate has been rotated again by a certain angle in the counter-clockwise direction (along the arrow 100) with respect to the position in Figure 6. In the entire range of the postures between the positions shown in figures 6 and 7, the opening path 94 of the movable plate 84 continues to substantially retain full alignment with the opening of the fixed plate 82, while the opening 92 of the movable plate 84 gradually it becomes completely misaligned from the opening 86 of the fixed plate 82. Therefore in the rotation from the position in Figure 6 to the position in Figure 7, a progressively decreasing flow rate is offered to the cold water, my you enter that the path open to hot water remains completely open. In this way there is a progressive path from the mixing action to the distribution of only the hot water. As an alternative, the two ranges of the intermediate positions between the positions of Figures 5 and 7 can be replaced by a single range in which a gradual growth of the path is offered to the hot water, while the path offered to the cold water gradually decreases and simultaneously . Therefore the two plates 82 and 84, with their openings 90 and 96 provide a sequential control valve 80 for flow and mixing action, which can be manually controlled by rotating the valve body 12 using the handle 26 which operates a frame 25. With the help of this manual control valve 80, one can set a volume of cold water at a mixing ratio, which are projected to be corrected subsequently by the action of the thermostatic mechanism 64. The description refers to the case of a thermostatic mixing valve, which can be used as a nozzle with an interrupting position. In cases where, on the other hand, the valve is projected to work as a supplier for one or several devices, where the function of intercepting and adjusting the volume is downstream from this valve 10 the interception or interruption and the range of the positions they can be eliminated corresponding to a progressively increasing path offered to the cold water, while the hot water remains interrupted. The thermostatic mechanism works in the following way. The mixing chamber 59, receives the hot water through the flow openings 27, while the cold water flows from the ring-shaped chamber 38, in respective proportions which are manually set by the sequential control valve 80, previously described. The hot and cold water are mixed in the mixing chamber 59, and discharge through the outlet path 33, through the discharge opening 34 and exit 36 in the accessory 14. This mixed water surrounds the thermostatic element 64, which assumes the same temperature and expands or contracts accordingly. The expansion or contraction of the thermostatic element 64 moves the slide distribution valve 44 down or up respectively. When the water heats the thermostatic element 64, it expands, moves down the slide valve 44 and the annular seat 42 moves out of the seat surface 40, consequently the path between the annular chamber 38 and the mixing chamber 59 widens. This reduces the resistance against cold water flow and the volume of this flow increases, which reduces the temperature of the mixed water. If at that point the manual sequential control valve 80 is adjusted again to increase the temperature, then there will also be an increase in the expansion of the thermostatic element 64, and the path between the annular chamber 38, and the mixing chamber 29, it becomes even wider with even less resistance that increases further the flow velocity of the cold water. One can observe in this manner that the thermostatic mechanism 64, tends to act against manual adjustment so that the most recent one can be executed with a larger amplitude to achieve the desired temperature in the mixed water. The good adjustability for small temperature changes is improved in this way. In addition, any voluntary adjustment of the manual sequential valve to adjust the temperature does not directly cause an axial change in the slide distribution valve, an axial change that must be successively compensated by the thermostatic mechanism to achieve an equilibrium condition. Therefore, there will not be a phenomenon of provisional overshoot. The operation of the handle 70, in this thermostatic valve, axially moves the entire thermostatic element 64, and the ring 56, with the slide valve 44 up and down. However, contrary to what is usual, the movement of the handle 70 does not help to adjust the temperature but to adjust the maximum limit of the temperature that can be reached (under normal conditions of supply) in the delineated mixing chamber. It is obvious that, on the other hand, the temperature of the distributed water can rise higher than this limit, possibly up to the point where it reaches the temperature of the hot water supplied only to the supply conduit 18, if there are abnormalities or, at the most, if there is a. total lack of supply of cold water supply conduit. However, the described mode is advantageous both in cases where the temperature of the hot water supplied by the pipe 18 is not dangerous and by the fact that the hot water path inside the valve is completely free (except for the voluntary control ) and therefore is particularly favorable in cases where hot water is supplied at low pressure. If one wishes to introduce a mechanism that prevents the delivery of hot water with a high temperature, one can use the mode according to Figure 8. The above to a large extent corresponds to the previously described mode and the corresponding parts, which are labeled with the same references, therefore will not be described again. The axial cross section of this figure is also the same as that shown in Figure 1. The basic difference between the embodiment according to Figure 8, against the embodiment according to Figure 1, is in the fact that the thermostatic adjustment takes place on the path 31 of the hot water 5 instead of on the cold water path 30. The inlet path 30 for the cold water has its annular chamber 38 freely empty inside the mixing chamber 50. On the other hand, the inlet path 31 for the hot water empties into the annular chamber 46, and the annular part active 48 of the slide distribution valve 44, surrounds this annular chamber 46, and cooperates with a lower surface 50 presented by the central body 28 to controllably restrict flow within the mixing chamber 59. This valve works in an identical manner to that described above, but the thermostatic adjustment is followed by a dilation of the thermostatic element 23, involving the strangulation of the hot water path instead of widening the cold water path. It follows from this that in case of any anomaly in the supply of cold water, the volume of mixed water is reduced enough to remain within the limit temperature established by the valve, and in case of total absence of cold water supply, the cesarla valve completely distribute the water. In all its embodiments, the thermostatic valve according to the invention can be used as a thermostatic nozzle that is operated in a progressive manner, which causes the valve frame 25 to rotate by virtue of the operation of the handle 26. However, it is also it is possible to use the valve to supply one or more apparatuses, such as, for example, showers, each provided with its own volume control and interception nozzle - or with one or more nozzles inserted in the downstream conduit from the thermostatic valve. In this case, the thermostatic valve is manually adjusted only to set the desired temperature, while the volume and the shut-off valves are adjusted downstream on the nozzles in the various appliances. Like all thermostatic valves that do not act as a nozzle, which as such do not ensure a separation between the supply of the hot and cold water pipes, optional valves without return can be inserted into the lines to ensure this separation. It should be understood that the invention is not conferred to the modalities described and illustrated by way of example. Some modifications have been described and others are within the scope of the expert in the field; for example, the shape and arrangement of the opening path of the plates 82 and 84 can be modified, provided that they give rise to the succession of actions described above. The arrangement of other parts of the valve can also be modified. The lid 70 by adjusting the obtained limiting temperature can be omitted when this adjustment is predetermined by design, or this adjustment can be made by putting the members that are accessible to the action of a technician, but that the occasional user can not operate. These and other modifications and any substitution with the technical equivalents may be introduced in what was described and illustrated above without departing from the scope of the invention and the coverage of this patent.

It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present description of the invention.

Claims (20)

CLAIMS Having described the invention as above, the content of the following claims is claimed as property:

1. A thermostatic mixing valve including a base having two supply openings for the cold water and for the hot water, a mixing chamber, paths between the supply openings and the mixing chamber, an outlet opening which is conducted from the mixing chamber for the mixed water, a thermostatic element placed at least partly in the mixing chamber, a sliding distribution valve controlled by the thermostatic element, the two supply openings and the outlet which are made in a body central located inside the sliding distribution valve, the thermostatic mixing valve characterized because: the sliding distribution valve was built to restrict and control the path between one of the supply openings and the mixing chamber, and that a valve Manual control is interposed between the supply openings and the mixing valve, to control the f luxury through the two supply openings.

2. A thermostatic mixing valve as defined in claim 1, further characterized in that: the slide distribution valve was constructed to restrict the action of the thermostatic element, only the path through which the hot water passes from the relevant supply opening to the mixing chamber.

3. A thermostatic mixing valve, as defined in claim 1, further characterized in that: the sliding distribution valve is constructed to restrict the action of the thermostatic element, only the path through which the cold water passes from the opening of the thermostatic element. relevant supply to the mixing chamber.

4. A thermostatic mixing valve according to claim 1, further characterized in that: the manual control valve has a pair of valve plates, provided with an opening through which a first plate is fixed and a second plate is movable and is in contact with the first fixed plate.

5. A thermostatic mixing valve, according to claim 4, further characterized in that: the plates have their openings placed in such positions, to ensure an interruption succession position, a range of positions of progressive opening of the paths for the cold water, while the closure of the hot water path is retained, a range of positions of progressive opening of the hot water, while retaining the total opening of the cold water and, finally, a range of progressive closure of the cold water path, while retaining the opening of the hot water path, while the two plates each have a discharge opening permanently aligned to each one.

6. A thermostatic mixing valve, according to claim 4, further characterized in that: the plates have their openings placed in such positions, to ensure in succession the position of interruption, a range of positions of progressive opening of the paths for the cold water, while the closure of the hot water path is retained and a range of positions in which a progressive opening of the hot water path takes place and simultaneously, a progressive closing of the cold water path, the two plates each having a discharge opening permanently aligned to each one.

7. A thermostatic mixing valve, according to claim 4, further characterized in that: the plates have their openings placed in such positions, to ensure in succession, a range of progressive opening positions of the paths for hot water, while retaining the opening complete cold water path and a range of progressive closure, while retaining the full opening of the hot water path, the two plates each have a discharge opening permanently aligned to each.

8. A thermostatic mixing valve, according to claim 4, further characterized in that: the plates have their own openings placed in such positions, to ensure a range of positions, in which a progressive opening of the hot water path takes place and, simultaneously , a progressive closing of the cold water path, the two plates have each discharge opening permanently aligned to each one.

9. A thermostatic mixing valve, according to claim 5, further characterized in that: the openings of a first plate, are placed symmetrically with respect to a diameter, while the openings of a second plate, cooperating with the first plate, have an asymmetric arrangement with with respect to a diameter which, when the plates are in an interrupted position was aligned, with the diameter of the first plate.

10. A thermostatic mixing valve, according to claim 1, further characterized in that: the valve has a base part, fixed in a conduit of the installation, and a rotating body mounted on the base so that it can be rotated in the part of the base and assemble the operating member for the manual sequential control valve, to provide a progressive flow and mixing adjustment.

11. A thermostatic mixing valve according to claim 10, further characterized in that: the rotating body of the valve contains a frame equipped with a surrounding handle, formed to facilitate the manual rotation operation of the rotating part.

12. A thermostatic mixing valve according to claim 10, further characterized in that: the fixed plate was mounted on the base and that the movable plate was mounted on the rotary body of the valve.

13. A thermostatic mixing valve according to claim 1, further characterized in that: a means for determining the maximum temperature at which the distributed water can be adjusted.

14. A thermostatic mixing valve, according to claim 13, further characterized in that: the means for determining the maximum temperature of the water distributed, includes an adjustment mechanism, to regulate the resting position of the thermostatic element and the annular slide valve connected to this .

15. A thermostatic mixing valve according to claim 14, further characterized in that: the adjusting mechanism for regulating the resting position of the thermostatic element and the annular slide distribution valve includes a lid axially attached to the thermostatic element, which can be rotated through manual action, mounted by means of a connection of screws enhilados on the valve, and of which the axial cut, made by the rotation, is transmitted to the thermostatic element.

16. A thermostatic mixing valve characterized in that: a base having two supply openings; a rotating body mounted on the base and operably connected to a first valve surface with a first and second entry path therethrough which are operably positioned adjacent to the two supply openings, to control the volume of flow in the housing. a second valving member, being annular in shape and movable towards and away from an annular seat in the vicinity, to restrict and control the fluid, from the first entry path; the first inlet passage passes through the annular seating surface, within the radial extension of the annular valving surface and having a downstream end in fluid communication with the annular seat and the annular valving member, for providing a first annular flow path between the annular seat and the annular valving member, from radially within the annular valving member to the radially exit from the annular valving surface to a mixing chamber; the first entry path, being sealed within the interior of the annular valving surface with respect to the second entry path, from the supply openings to the mixing chamber; an axially thermostatic element, movably disposed within the mixing chamber and operably connected to the annular valving surface to axially move the annular valving surface towards and away from the annular seat, to control flow restriction, from only the first path of entering the mixing chamber in response to the temperature of the fluid in the mixing chamber; The mixing chamber is in fluid communication with an outlet outlet thereof.

17. A thermostatic mixing valve according to claim 16, further characterized in that: the annular seat opposing an axial end of the annular valving member; the second inlet passage passes through the first settling surface and through the inside of the annular valving surface within the radial extent of the annular valving surface and having a downstream end in the fluid communication without restriction with the mixing chamber.

18. A thermostatic mixing valve according to claim 16, further characterized in that: the second final entry path below the annular valving member, to allow unrestricted free flow around the annular valving member to the mixing chamber; the annular seat is positioned above the annular valving member and the first entry passage passes through the interior of the annular valving member

19. A thermostatic mixing valve according to claim 16, further characterized in that: a return biasing spring, mounted within the radial confines of the annular valving member, to an axial movement of the annular valving member, in the contraction of the thermostatic element .

20. A thermostatic mixing valve according to claim 19, further characterized in that: the return biasing spring mounted on the top of a central body within the rotating body.