• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This mixing unit (2) for a mixing valve (1) comprises: a first inlet of a first incoming flow, a second inlet (21) of a second incoming flow (C1, C2, C3); mixing means (13) of the first and second incoming flows to form an outgoing flow (M1, M2, M3, M4), - an outlet (47) for the outflow, - thermostatic means comprising a thermostatic element (73). including a thermosensitive portion (75), and - a housing (79), which communicates the outlet with the second inlet, and wherein the thermostatic element is housed so as to seal it tightly, the mixing unit ( 2) being characterized in that the outlet (47) comprises an abutment (91) designed to retain the thermosensitive portion (75) in translation along the first axis (X73), in a direction (D2) opposite to the shutter, without rupture of the tightness of the closure, especially in case of ejection of the thermosensitive element (73) of the housing (79) under the effect of accidental overpressure in the second inlet (21).
    公开号:FR3039876A1
    申请号:FR1557481
    申请日:2015-08-03
    公开日:2017-02-10
    发明作者:Pierre-Olivier Fassolette；Thierry Maraux
    申请人:Vernet SA；
    IPC主号:
    专利说明:

    Mixing unit and mixing valve comprising such a mixing unit
    The present invention relates to a mixing unit and a mixing valve comprising such a mixing unit. The invention relates to the field of sanitary taps. In particular, faucets called "mixer" allow emit a mixed flow of running water by mixing a flow of hot water and a flow of cold water within a cartridge mounted in the body tap. The respective flow rate of the cold water and hot water flows admitted into the cartridge can be adjusted by means of a control lever, in order to allow adjustment of the temperature of the mixed flow by rotation of the lever around an axis, and the flow rate of the mixed flow by lever rotation about a second axis.
    The cartridge comprises in most cases a pair of perforated ceramic discs, one being fixed and the other being movable under the action of the lever while being in plane contact, sliding and sealed with the fixed disc. Depending on the position of the mobile disc on the fixed disc, channels are formed to allow the admission of cold and hot water flows within the cartridge, with a greater or lesser flow, and thus cause their mixing to the formation of mixed flow.
    FR-B-2,876,433 discloses a ceramic disk cartridge for a mixing valve, further comprising thermostatic means including a shutter of a passage of hot water upstream of the disks, and a thermostatic element including the once a thermosensitive portion disposed in the path of the mixed flow, and a portion movable in translation relative to the thermosensitive portion, translationally connected to the shutter. The thermostatic means thus make it possible, when the temperature of the mixed flow exceeds a predetermined threshold value, to close off the hot water passage by displacement of the shutter under the action of the thermosensitive part. The temperature of the mixed flow is thus automatically limited by the thermostatic means. Nevertheless, it can happen that, in the event of accidental overpressure in the passage of hot water, for example caused by a water hammer, that is to say a pressure shock, the thermostatic means are ejected from their housing, which can cause a leak of hot water directly in the mixed flow, downstream of the discs, hot water passing directly through the housing thermostatic means thus left partially vacant. This leakage is detrimental from an economic point of view, and dangerous because of the risk of burning users.
    Accordingly, the object of the invention is to provide a new mixing unit, for a mixing valve, which is safer and more reliable. The invention relates to a mixing unit for a mixing valve, which comprises: a first inlet of a first incoming fluid flow having a first temperature; a second inlet of a second incoming fluid flow having a second temperature; temperature above the first temperature, - mixing means of the first and second incoming flows to form an outflow, - an outlet for the outgoing flow, - thermostatic means comprising: o a thermostatic element including both a thermosensitive portion disposed at least partially in the outlet, and a portion movable in translation relative to the thermosensitive portion along a first axis, o a shutter of the second input connected to the movable part in translation along the first axis, and - a housing, which sets in communication the output with the second input along the first axis, and wherein the thermostatic element is housed in a to seal the communication between the output and the second input.
    According to the invention, the outlet comprises a stop designed to retain the thermosensitive portion in translation along the first axis, in a direction opposite to the shutter, without breaking the seal of the housing.
    Thanks to the invention, the space of movement of the thermostatic element out of its housing is limited by the stop. Thus, in case of ejection of the thermosensitive element under the effect of an accidental overpressure in the second inlet, which can occur in particular in case of water hammer while the shutter is closed, the thermosensitive element cooperates with the stop so that the tightness of the housing remains guaranteed, avoiding that opens in the housing a passage that would allow the second inflow to flee to the exit.
    According to other advantageous features of the invention, taken separately or in combination: the thermosensitive part is mounted in abutment without play against the abutment; the unit comprises an attachment element through which the thermosensitive part is integral with the housing, the thermosensitive part being placed at a play distance from the abutment, and being provided with a peripheral seal ensuring sealing the closure of the housing by the thermosensitive portion, the seal being in annular contact with the wall of the housing a distance, measured parallel to the first axis, which is greater than the clearance distance; - The output is delimited by a peripheral wall, a portion forming the abutment, is substantially flat and oriented substantially orthogonal to the first axis; the shutter is arranged relative to the mobile part so that the latter can push the shutter in a second direction opposite to the direction, to a closed position of the second input, the unit of mixing further comprising a return spring adapted to bias the shutter in the direction to an open position of the second inlet; the thermosensitive part comprises, along the first axis: a cup through which the stop is designed to retain the thermosensitive part, the cup extending in the passage of the outgoing flow at the outlet, and enclosing a thermo-expandable body, - a guide of the movable part, which extends into the housing from the cup and is provided with a peripheral seal to ensure the tightness of the closure of the housing by the thermosensitive portion, including when the thermosensitive portion is retained by the stop; the unit has a generally cylindrical shape defining a main axis orthogonal to the first axis, the mixing unit comprising a lower face on the surface of which the first inlet and the second inlet open, the second inlet being extended by a baffle duct; comprising a shutter-closable portion, the closable portion extending substantially coaxially with the first axis, and which connects the second inlet to the mixing means, the stopper traversed by the first axis; the unit comprises on the one hand a cartridge containing the mixing means, and on the other hand an additional box which is mounted in abutment against the cartridge, and which includes the thermostatic means; the unit comprises a control member, the mixing means including a mixing chamber containing a set of mixing disks, which are made of ceramic, and of which at least one is actuated by the control member, for controlling the flow rate; respective flow of the first inflow and the second inflow and adjust both the temperature and the flow rate of outflow by action on the controller. The invention also relates to a mixing valve, which is equipped with a mixing unit as defined above. The invention will be better understood on reading the description which follows, given solely by way of nonlimiting and non-exhaustive example and with reference to the drawings in which: FIGS. 1 and 2 are longitudinal sections of FIG. a mixing valve comprising a mixing unit according to a first embodiment according to the invention; FIG. 3 is a partial perspective view from below of the mixing unit of FIGS. 1 and 2, in which lines I-I and II-II correspond to the respective section lines of FIGS. 1 and 2; - Figure 4 is a longitudinal section in the same plane as that of Figure 1, a mixing unit according to a second embodiment of the invention; FIG. 5 is a view similar to FIG. 4 in which thermostatic means of the mixing unit have been omitted; FIG. 6 is a bottom perspective view of a mixing unit according to a third embodiment; and FIG. 7 is a perspective view of a detail of embodiment of the mixing unit of FIG. 6.
    Figures 1 and 2 illustrate a mixing valve 1 in which is inserted a mixing unit 2. The mixing valve 1 is preferably designed to be installed on a tray of the type sink or shower, or more generally within a sanitary installation. The mixing valve 1 comprises, in a conventional manner, a nozzle 3 from which a mixed flow of water illustrated by the arrow M1 is intended to be emitted. The valve 1 also comprises a body 4, which forms a hollow cylinder defining a main axis X4 which is intended to be arranged vertically when the valve is mounted on the sanitary installation.
    For convenience, the remainder of the description is oriented with respect to the main axis X4, considering that the terms "upper" and "upper" correspond to an axial direction turned towards the upper part of FIG. the terms "lower" and "lower" correspond to an axial direction of opposite direction.
    The spout 3 forms a curved conduit extending from the body 4 obliquely to the main axis X4, upwards, the curvature of the spout 3 to guide the flow of mixed water M1 to the bottom. The mixed flow of water thus progresses obliquely upwards in the beak along the arrow M2 to the free end of the latter.
    The mixing valve 1 also comprises a cold water inlet 5 which is visible in FIG. 2, and a hot water inlet 6 which can be seen in FIG. 1, which are connected to the body 4 at a low end. of the last. The cold water inlet 5 and the hot water inlet 6 are intended to be connected to conventional water supply means of the sanitary installation, which are not detailed in the present description. The cold water progresses upwards in the inlet 5, according to the arrow F1, at a temperature Tf. The hot water progresses upwards in the inlet 6, according to the arrow C1, at a temperature Te. The streams C1 and F1 are mixed within the mixing valve 1 to form the flow M1, a temperature TM between Tf and Te, and flow added streams C1 and F1. The mixing unit 2 is housed within the body 4, being inserted into the body 4 through an upper opening 9 of the body 4 along the main axis X4. It is in this mixing unit 2 that the mixing of the incoming flows F1 and C1 is performed to form the outgoing flow M1. The mixing unit 2 has a generally cylindrical shape coaxial with the main axis X4. The mixing unit 2 comprises on the one hand a cartridge 11, which contains means 13 for mixing the first incoming flow F1 and the second incoming flow C1 to form the outgoing flow M1, and on the other hand an additional box 15 which is mounted upwardly against a lower wall 45 of the cartridge 11 along the main axis X4, so that the cartridge 11 is located in the upper part of the body 4, above the additional housing 15 which is located in the lower part of the body 4.
    The additional box 15 has a lower face 24 through which it is itself supported downwards against a bearing wall 23 of the body 4. The latter is substantially discoidal and extends radially relative to the main axis X4. The inlets 5 and 6 of the incoming flows F1 and C1 pass through the support wall 23 to supply the additional box 15 via the lower face 24. In practice, the inlets 5 and 6 are respectively connected, in a sealed manner, to a first inlet 19 of the first incoming flow 1, and a second inlet 21 of the second incoming flow C1 opening on the surface of the lower face 24.
    As illustrated in FIG. 2, the first incoming flow progresses along the arrow F1 to the first input 19 and continues its travel through the additional box 15 from bottom to top along the arrow F2 in a conduit 25 passing through the housing. additional member 15 extending parallel to the main axis X4 from the first inlet 19. The through conduit 25 guides the first incoming flow F2 to a mixing chamber 27 of the cartridge 11. The mixing chamber 27 belongs to the mixing means 13. At the same time, as shown in FIG. 1, the second incoming flow enters the additional box 15 via the second inlet 21, and flows from bottom to top along the arrow C2 through the housing additional in a baffle duct 32 which extends generally from bottom to top from the second inlet 21. In this case this baffle duct 32 comprises a first portion 31 substantially para It parallels the main axis X4 and extends from the second inlet 21. The baffle duct 32 then comprises a closable portion 29, by a shutter 87 which is described in more detail below, the closable portion 29 extending the first part 31. Finally, the baffle duct 32 comprises a third portion 35 substantially parallel to the main axis X4 leading the second inflow C2 to the cartridge 11 and extending the closable portion 29. The closable portion 29 s' extends orthogonally to the first portion 31 and the third portion 35 so that the baffle duct 32 forms an "S". The third portion 35 opens into the mixing chamber 27. Thus, the two incoming flows F2 and C2 are admitted within the mixing chamber 27 of the cartridge 11 to be mixed and form the outflow M1 and M2.
    The mixing chamber 27 comprises an inlet 39 for the first flow F1, a second inlet 41 for the second stream C1, and an outlet 43 for the outflow M1. The inputs 39, 41 and the outlet 43 open at the surface of the lower wall 45 of the cartridge 11. In this case, the bottom wall 45 is of generally discoid shape centered on the main axis X4, the inputs 39 and 41 and that the output 43 being distributed around the main axis X4.
    In the illustrated example, the mixing means 13 comprise a set of mixing discs 13A, 13B and 13C, which are contained in the mixing chamber 27. The mixing discs 13A, 13B and 13C are in surface contact with each other. the others and extend in planes orthogonal to the main axis X4. The set of mixing discs comprises an upper disc 13A, an intermediate disc 13B and a lower disc 13C, the upper discs 13A and 13B intermediate being movable relative to the disc 13C which is fixed, the intermediate disc 13B being in sliding contact and sealed with the 13C disc. Intermediate discs 13B and lower 13C comprise a system of channels and gills, not shown, which is connected to inputs 39 and 41 as well as to output 43 and which, depending on the relative position of discs 13B and 13C, regulates the respective flow rate of the incoming flows F2 and C2 admitted within the set of disks by the inputs 39 and 41. As represented by the arrows F3 and C3, the incoming flows circulate in the system of channels and gills and first pass through the lower disk 13C, then into the intermediate disk 13B where they are brought into contact to be mixed and form the outflow M3. The outgoing flow M3 is at temperature TM, the ratio of the flow rates of the incoming flows F3 and C3 for adjusting the temperature TM, and the value of the flow rates of the incoming flows F3 and C3 for adjusting the flow rate of the outflow M1. The incoming flows F3 and C3 then flow again through the lower disk 13C from top to bottom. In practice, the passage section of the incoming flows F3 and C3 varies as a function of the relative position of the disks 13B and 13C, by placing in communication the aforementioned channels and gills. Ceramic discs and their channel system are not described in more detail because they constitute well-known mixing means as such, and described for example in FR-B1-2 876 433. It is also understood that, if the it is preferred to use a ceramic disk mixing chamber, any known mixing means and usually used in mixing valve cartridges can be used instead.
    The outflow M3 formed by mixing within the mixing chamber 27 is then discharged out of the latter, and out of the cartridge 11, into an outlet chamber 37 of the additional box 15, leading the outgoing flow M3 from high to high. down to an outlet 47 formed through the support wall 23.
    As is particularly visible in Figure 3 exclusively illustrating the additional housing 15 and the bottom wall 45 of the cartridge 11, seen from below, the outlet chamber 37, the through conduit 25 connected to the first inlet 19 and the closable pipe 29 connected to the second input 21 are distributed around the main axis X4. In the same way, the arrivals 5, 6 and the exit 47 are distributed around the main axis X4.
    The outflow M3 is thus discharged into a low chamber 50 of the body 4 via the outlet 47. In practice, the cartridge 11 comprises a sealing ring 71 which is centered on the main axis X4 and which protrudes downwardly from the bottom wall 45, extending around the additional housing 15, so as to be in sealing contact with the body 4. In this case, the sealing ring 71 includes a peripheral wall 93, which extends inside the sealing ring 71, which is substantially cylindrical and centered on the main axis X4, the peripheral wall 93 encircling the additional housing 15, and delimiting a portion of the outlet chamber 37. The mixing valve 1 also comprises a bottom 49 substantially discoidal and orthogonal to the main axis X4, which closes the body 4 at the lower end thereof. The lower chamber 50 is thus delimited by the sealing ring 71, the body 4, the bottom 49 and the bearing wall 23. The outflow M3 is conducted in the lower chamber 50 along the arrow M4, and up to spout 3 through an access opening 51 formed in the wall of the body 4 radially relative to the main axis X4, placing the lower chamber 50 in communication with the spout 3. The mixing unit 2 comprises furthermore a lever 7 which is movably mounted at the top of the cartridge 11, so as to protrude from the body 4 via the upper opening 9, to allow a user to actuate the lever 7. The actuation of the lever 7 makes it possible to control the mixing means 13, and in particular to move the upper and intermediate discs 13A and 13B in rotation around an axis parallel to the main axis X4, or around the axis X4 itself, and in translation along an axis X13 which is orthogonal to the main axis X4. In general, the lever 7 forms a control member for actuating at least one of the disks 13A, 13B and 13C, and thus to control the respective flow rate of the first incoming flow F1 and the second incoming flow C1. Thus, the control member 7 makes it possible to adjust both the temperature and the flow rate of the outflow M1 by adjusting the relative position of the disks of the disk assembly 13A, 13B and 13C. The mixer tap 1 and the cartridge 11 can thus be qualified as "single-switches" insofar as the lever 7 makes it possible to control both the flow rate and the temperature of the outgoing flow M1 by adjusting the flow rates of the incoming flows F1 and C1. In practice, the lever 7 is: - pivoting about the main axis X4, which causes a rotation of the upper discs 13A and 13B around the same axis, in order to adjust the ratio between the flow rate of the first and second inflow F1 and C1 and thus the temperature of the outflow M1, and - pivoting about a second axis X7 which is orthogonal to the main axis X4 to translate the upper discs 13A and 13B along the axis X13 and to make vary the flow rate of the first and second flows equitably, to adjust the outflow flow rate.
    The lever 7 is connected to the set of disks 13A, 13B and 13C, that is to say the mixing means 13, by an operating mechanism which is not described in more detail, insofar as it is well known as such.
    In practice, the cartridge 11 comprises a cover 53, which forms its outer casing and which is of a substantially cylindrical shape with a circular base around the main axis X4. The cover 53 encloses the mixing means 13 and the base of the lever 7, and forms an upper neck 55 of substantially cylindrical shape centered on the main axis X4, and in which is rotatably mounted about the main axis X4, a rotary support 57 of the lever 7. The lever 7 passes through the rotary support 57 and is mounted on the latter by means of a pivot axis 59 of the lever 7 relative to the rotary support 57 about the axis X7. In this example, the disk assembly 13A, 13B and 13C are mounted between the rotary support 57 and the bottom wall 45 of the cartridge 11, which delimit the mixing chamber 27 with the cover 53.
    Furthermore, the cover 53 comprises, at the base of the upper neck 55, a ring 63, through which a nut 65 centered around the main axis X4 plates the mixing unit 2 against the support wall 23. In practice, the nut 65 has an external thread 67 which is screwed into an internal thread 69 of the upper opening 9 of the body 4, these threads 67 and 69 being centered on the main axis X4. The mixing unit 2 also comprises thermostatic means, particularly visible in FIG. 1. They comprise in the first place a thermostatic element 73, extending along a first axis X73 included in the plane of FIG. 1, and extending substantially perpendicular to the main axis X4. In particular, the closable portion 29 of the baffle duct 32 extends substantially coaxially with the first axis X73. Along this first axis X73, the thermostatic element 73 includes a thermosensitive portion 75 mounted in a housing 79 of the additional housing 15. The housing 79 is a conduit coaxial with the first axis X73, and which is formed in the additional housing 15 in order to connect the outlet chamber 37 and the baffle duct 32. In practice, the housing 79 thus communicates the outlet 47 with the second inlet 21.
    The thermosensitive part 75 forms a fixed part of the thermostatic element 73 and comprises in particular, along the first axis X73, a cup 81 which protrudes from the housing 79 and which extends in the passage of the outflow M3 at the level of the outlet 47. The cup 81 has a generally cylindrical shape with a circular base centered on the first axis X73, and encloses a heat-expandable body which is for example a suitable wax. The cup 81 being in contact with the outflow M3, the heat-expandable body expands and contracts as a function of the temperature TM of the outflow M3.
    The thermosensitive portion 75 also includes a guide 83, which extends the cup 81 along the first axis X73, and through which the thermosensitive portion 75 is mounted in the housing 79. The guide 83 has a shape of revolution around the first X73 axis and extends within the housing 79. The guide 83 close the housing 79 sealingly, to substantially prevent any transfer of water from the second stream C2 entering the outlet 47. In practice, the guide 83 is provided a peripheral seal 85, centered on the first axis X73, through which the thermosensitive portion is mounted in the housing 79. The seal 85 ensures the sealing of the closure of the housing 79 by the thermosensitive portion 75. A collar 86 is provided around the guide 83, against which collar 86 the seal 85 is in axial bearing, the collar 86 being disposed on the side of the cup. e 81 to retain the seal 85 in axial translation towards the cup 81. The thermostatic element 73 is thus housed in the housing 79 so as to seal off the communication between the outlet 47 and the second inlet 21. The thermostatic element 73 also comprises a movable part 77, which forms a cylindrical piston coaxial with the first axis X73. The movable portion 77 is mounted within the guide 83, so as to be translatable relative to the thermosensitive portion 75 away from the thermosensitive portion 75, towards the baffle duct 32, along the first axis X73 under the action of the thermo-expandable body contained in the cup 81.
    A shutter 87, belonging to the aforementioned thermostatic means, is provided within the closable portion 29, and is designed to be displaced in translation along the first axis X73 by the movable portion 77. The shutter 87 is arranged relative to the portion mobile 77 so that the latter can push the shutter 87 to a closed position of the second input 21. In this case, the movable portion 77 is in contact with the shutter 87 so as to push the latter away from the thermosensitive portion 75 in a direction D1 parallel to the axis X73, under the action of the thermodilatable body contained in the cup 81. The shutter 87 is in practice mounted in compression between the free end of the movable part 77 and a return spring 89. The latter is itself mounted in compression between the shutter 87 and an inner shoulder of the closable portion 29 of the baffle duct 32. A collar 88 centered on the r the first axis X73 is interposed between the return spring 89 and the inner shoulder. The return spring 89 is therefore a compression spring, designed to return the shutter 87 in a direction D2 opposite to D1, to an open position of the baffle duct 32 and thus the second inlet 21. shutter 87 thus closes the closable portion 29, and therefore the second inlet 21, according to a variable degree of closure as a function of the expansion of the heat-expandable body and therefore of the temperature TM, to vary the flow rate of the second incoming flow C2 Consequently. When the temperature TM reaches a predetermined threshold, for example 50 ° C., the stream C2 is totally, or at least partially, interrupted by closing off the second input 21.
    The second incoming flow C1 is admitted into the mixer tap 1 with a pressure allowing it to circulate within the pipes in accordance with the arrows C1, C2 and C3 defined above, so that the thermostatic element 73 is itself subjected to this pressure, which tends to push the thermosensitive element 75 out of the housing in the direction D2. The thermosensitive portion 75 is thus mounted in abutment, without play, against a stop 91 formed in the peripheral wall 93 of the sealing ring 71 of the cartridge 11. The stop 91 is designed to retain the thermosensitive portion 75 in translation according to the first axis X73, in the direction D2 opposite the shutter 87, and in particular opposite the pressure of the second incoming flow. As illustrated in Figure 1, the stop 91 is designed to retain in particular the cup 81. The stop 91 extends over only a portion of the peripheral wall 93, and is of substantially flat geometry, or at least corresponding to the shape of the cup 81. The stop 91 is oriented in an extension plane substantially orthogonal to the first axis X73 and is traversed by this axis, in order to be in the axial alignment of the housing 79 and the closable portion 29 Thus, any pressure shock does not cause rupture of the tightness of the housing 79, insofar as the stop 91 securely retains the thermosensitive portion 75.
    Figures 4 and 5 illustrate a mixing unit 102 according to a second embodiment and having similar characteristics with the mixing unit 2 illustrated in Figures 1 to 3 of the first embodiment described above. The following description is therefore centered on the differences between the first and second embodiments. In particular, the reference numbers common to FIGS. 1 to 3 and FIGS. 4 and 5 refer to the same features and objects as described above for the first embodiment.
    In particular, the mixing unit 102 comprises a cartridge 11, an additional box 115, a first input for a first incoming flow, a second input 21 for a second incoming flow C2, a baffle duct 32, mixing means for forming an outflow M3, an outlet with an outlet chamber 37, a housing 179 and a stop 191. The mixing unit 102 also comprises thermostatic means comprising on the one hand a thermostatic element 173 including both a heat-sensitive portion 175 and a moving part 77, and on the other hand a shutter 87.
    Figures 4 and 5 exclusively show the bottom wall 45 and the additional housing 115 of the mixing unit 102, the characteristics not shown and attached to the cartridge 11 and the mixing valve 1 being similar to those described above. In FIG. 4, the shutter 89 is shown in the closed position, so that the second fluid stream C2 is not actually admitted into the additional box 115. The arrow C2 is however represented as if the shutter 89 was in open position.
    In this second embodiment, the thermosensitive part is linked in translation along the first axis X73 via a stirrup 95 in the shape of a "U". The caliper 95 comprises in this case two legs 96 substantially parallel to each other, and perpendicular to the first axis X73, and comprises a connecting portion 98 of the legs 96 between them. Support notches 99 of the stirrup 95 are formed in the wall of the housing 179, so that the stirrup 95 is integral with the latter. In addition, the stirrup 95 is placed in abutment against a diameter restriction 97 of the guide 183 of the thermosensitive part 175 so as to mechanically oppose the translation of the latter in the direction D2 with respect to the housing 179. In this case the stirrup 95 is straddling the thermosensitive part 175, so that the legs 96 extend on either side thereof.
    The cup 81 of the thermosensitive part 175 is placed at a clearance distance dj from the abutment 191, and is therefore not in abutment against the latter. The clearance distance dj is measured parallel to the first axis X73. Thus, if the pressure of the second incoming flow was to ruin, or even to destroy, the stirrup 95 or the notches 99. Consequently, the stirrup 95 would no longer perform its function of maintaining the thermostatic element 173 within the 179, the thermosensitive part 175 would be displaced in the direction D2 by a distance corresponding to the clearance distance dj, after which the thermosensitive part 175 would come into abutment against the stop 191. The clearance distance dj is sufficiently short for that this displacement of the thermosensitive part 175 does not open a passage which would allow the second incoming stream C2 to leak towards the outlet chamber 37. In particular, the wall of the housing 179 and the packing 85 are in contact with each other. annular manner over a distance of, measured parallel to the first axis X73, which is greater than the clearance distance dj. Thus, the seal 85 is of sufficient thickness to guarantee sealing, even when the thermosensitive portion 75 is abutted against the abutment 191.
    Figures 6 and 7 illustrate a mixing unit 202 according to a third embodiment and which has similar characteristics with the mixing units 2 and 102 of the embodiments described above and illustrated in Figures 1 to 5. The The following description is therefore centered on the differences between the first and second embodiments. In particular, the reference numbers common to FIGS. 1 to 5 and FIGS. 6 and 7 refer to the same characteristics and objects as described above for the first and second embodiments.
    In particular, the mixing unit 202 comprises a cartridge 11, an additional box 215, a first input 19 for a first incoming flow, a second input 21 for a second incoming flow C2, a baffle duct, mixing means for forming an outflow M3, an outlet with an outlet chamber 37, a housing and a stop 191. The mixing unit 202 also comprises thermostatic means comprising on the one hand a thermostatic element 273 including both a thermosensitive part, disposed at a play distance from the stop 191, and a movable portion 77, and on the other hand a shutter. The mixing unit 202 is devoid of "U" caliper, but includes a stirrup 295 called "quarter turn" which provides a similar function of maintaining the thermostatic element 273 in translation relative to the housing 215 the along the first axis X73. In this case, the stirrup 273 is shown in a locking orientation about the first axis X73, in which it bears in the direction D2, via branches 297 on two pins 296. The branches 297 are each protruding radially relative to a main ring 298 of the stirrup 295, which surrounds a shoulder 300 of the cup 281. The shoulder 300 is in species resting on the main ring 298 in a plane orthogonal to the first axis X73. The branches 297 each extend along a portion of the circumference of the main ring 298 and are inserted within the lugs 296. By quarter turn of the stirrup 295 about the first axis X73, the branches 297 are released. pins 296, which allows a translation of the stirrup 295 and the thermostatic element 273 along the first axis X73. To the end of being able to operate this rotation using a tool not shown, the stirrup 295 is provided with notches 299 for receiving said tool.
    In the foregoing examples, water streams are used. However, other fluids may be used instead of water, preferably liquid fluid streams. In general, the arrival 5 corresponds to an arrival of a first incoming flow F1 of fluid having a first temperature Tf, whereas the arrival 6 corresponds to an arrival of a second incoming flow C1 of fluid having a second temperature. Te which is greater than the first temperature Tf. The fluids of the first incoming stream F1 and the second incoming stream C1 are preferably identical and liquid, but may however be of a different nature. The water escaping from the spout 3 thus corresponds to an outgoing flow M1 of fluid, which is formed by mixing the first and second incoming flows F1 and C1 within the mixing valve 1.
    The embodiments and variants defined above may be combined to create new embodiments.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. - Mixing unit (2; 102; 202) for a mixing valve (1), which comprises: - a first inlet (19) of a first incoming flow (F1, F2, F3) of fluid having a first temperature (Tf), a second inlet (21) of a second incoming stream (C1, C2, C3) of fluid having a second temperature (Te) greater than the first temperature, - mixing means (13) of the first and second incoming flows for forming an outflow (M1, M2, M3, M4), - an output (47) for the outflow, - thermostatic means comprising: o a thermostatic element (73; 173; 273) including both a thermosensitive portion (75; 175) disposed at least partially in the outlet, and a movable portion (77) in translation relative to the thermosensitive portion along a first axis (X73), o a shutter (87) of the second input connected to the movable part (77) in translation along the first axis, and - a housing (79; 179), which puts in communication ion the output with the second input along the first axis, and wherein the thermostatic element is housed so as to seal off the communication between the output and the second input, the mixing unit (2; 102; 202) being characterized in that the outlet (47) comprises a stop (91; 191) adapted to retain the thermosensitive portion (75) in translation along the first axis (X73), in a direction (D2) opposite to the shutter without breaking the seal of the housing (79; 179).
    [2" id="c-fr-0002]
    2. - mixing unit (2) according to claim 1, characterized in that the thermosensitive portion (75) is mounted in abutment without play against the stop (91).
    [3" id="c-fr-0003]
    3. - mixing unit (102; 202) according to claim 1, characterized in that it comprises a fastening element (95; 295) through which the thermosensitive portion (175) is integral with the housing (179; ), the thermosensitive portion being placed at a clearance distance (dj) from the abutment (191), and being provided with a peripheral seal (85) ensuring the tightness of the closure of the housing (79) by the heat-sensitive portion, the seal (85) being in annular contact with the housing wall over a distance (dc), measured parallel to the first axis (X73), which is greater than the clearance distance (dj) .
    [4" id="c-fr-0004]
    4, - mixing unit (2; 102; 202) according to any one of the preceding claims, characterized in that the outlet (47) is delimited by a peripheral wall, a portion forming the abutment (91) is substantially plane and oriented substantially orthogonal to the first axis (X73).
    [5" id="c-fr-0005]
    5. - mixing unit (2; 102; 202) according to any one of the preceding claims, characterized in that the shutter (87) is arranged relative to the movable part (77) so that the latter can push the shutter in a second direction (D1) opposite the direction (D2), to a closed position of the second inlet (21), the mixing unit further comprising a return spring (89). ) designed to recall the shutter in the direction (D2) to an open position of the second input.
    [6" id="c-fr-0006]
    6. - mixing unit (2; 102; 202) according to any one of the preceding claims, characterized in that the thermosensitive part (75) comprises, along the first axis (X73): - a cup (81) by wherein the stop (91, 191) is adapted to retain the thermosensitive portion (75), the cup extending into the outflow passage (M1, M2, M3, M4) at the outlet (47). ), and enclosing a thermally expandable body, - a guide (83) of the movable portion (77), which extends into the housing (79) from the cup (81) and is provided with a seal (85) device to ensure the tightness of the closure of the housing (79) by the thermosensitive portion, including when the thermosensitive portion is retained by the stop (91, 191).
    [7" id="c-fr-0007]
    7, - mixing unit (2; 102; 202) according to any one of the preceding claims, characterized in that it has a generally cylindrical shape defining a main axis (X4) orthogonal to the first axis (X73), the mixing unit comprising a lower face (24) on the surface of which the first inlet (19) and the second inlet (21) open, the second inlet being extended by a baffle duct (32) comprising a closable part (29) by the shutter (87), the closable portion (29) extending substantially coaxially with the first axis, and which connects the second inlet (21) to the mixing means (13), the stop (91, 191) being crossed by the first axis.
    [8" id="c-fr-0008]
    8. - mixing unit (2; 102; 202) according to any one of the preceding claims, characterized in that it comprises on the one hand a cartridge (11) containing the mixing means (13), and d ' on the other hand, an additional box (15; 115; 215) which is mounted in abutment with the cartridge and which includes the thermostatic means.
    [9" id="c-fr-0009]
    9. - mixing unit (2; 102; 202) according to any one of the preceding claims, characterized in that it comprises a control member (7), the mixing means (13) including a mixing chamber ( 27) containing a set of mixing discs (13A, 13B, 13C), which are ceramic, and at least one of which is actuated by the control member, for controlling the respective flow rate of the first incoming flow (F1, F2, F3) and the second incoming flow (C1, C2, C3) and adjust both the temperature and the flow rate of the outflow (M1, M2, M3, M4) by acting on the control member.
    [10" id="c-fr-0010]
    10. - mixing valve (1), which is equipped with a mixing unit (2; 102; 202) according to any one of the preceding claims.
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE112016003514T5|2018-04-19|
    WO2017021386A1|2017-02-09|
    US20180223508A1|2018-08-09|
    CN107924202A|2018-04-17|
    GB2557071B|2021-06-09|
    GB201801341D0|2018-03-14|
    GB2557071A|2018-06-13|
    FR3039876B1|2018-03-09|
    US10590635B2|2020-03-17|
    CN107924202B|2020-10-09|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2424459A1|1978-04-28|1979-11-23|Knapp Alfons|MIXER TAP|
    FR2876433A1|2004-10-08|2006-04-14|Vernet Sa Sa|CARTRIDGE FOR A MIXER FAUCET, FAUCET COMPRISING SUCH A CARTRIDGE AND THERMOSTATIC ASSEMBLY FOR EQUIPPING SUCH A CARTRIDGE|
    CN100359227C|2006-01-26|2008-01-02|叶国荣|Temperature controlled valve core|
    CN2906240Y|2006-04-24|2007-05-30|谢庆俊|Double-handle double-function thermostatic valve core|
    CN101893114B|2010-07-14|2011-09-07|潘兆铿|Mixing governing constant-temperature water valve with pressure balance device|FR3034162B1|2015-03-24|2018-09-21|Vernet|THERMOSTATIC DEVICE FOR CONTROLLING CIRCULATION OF A FLUID, AND THERMOSTATIC VALVE COMPRISING SUCH A DEVICE|
    FR3044782B1|2015-12-07|2018-01-12|Vernet|THERMOSTATIC MONOCOMMANDE CARTRIDGE AND MIXER FAUCET WITH SUCH A CARTRIDGE|
    FR3050512B1|2016-04-26|2018-09-28|Vernet|MIXING UNIT AND MIXER TAP COMPRISING SUCH A MIXING UNIT|
    FR3050510B1|2016-04-26|2018-09-21|Vernet|MIXING UNIT AND MIXER TAP COMPRISING SUCH A MIXING UNIT|
    FR3054282B1|2016-07-21|2018-08-31|Vernet|MIXING UNIT AND MIXER TAP COMPRISING SUCH A MIXING UNIT|
    US10648162B2|2017-12-15|2020-05-12|Hain Yo Enterprises Co., Ltd.|Swivel-type precision ceramics control balance valve|
    US10570591B2|2017-12-15|2020-02-25|Hain Yo Enterprises Co., Ltd.|Swivel-type precision ceramics control valve|
    IT201900010530A1|2019-07-01|2021-01-01|Carlo Nobili S P A Rubinetterie|Improved Faucet Mixing Cartridge.|
    DE102020104759A1|2020-02-24|2021-08-26|Grohe Ag|Sanitary fitting with a non-axial thermostatic mixer|
    法律状态:
    2016-08-24| PLFP| Fee payment|Year of fee payment: 2 |
    2017-02-10| PLSC| Publication of the preliminary search report|Effective date: 20170210 |
    2017-07-20| PLFP| Fee payment|Year of fee payment: 3 |
    2018-01-19| GC| Lien (pledge) constituted|Effective date: 20171212 |
    2018-07-25| PLFP| Fee payment|Year of fee payment: 4 |
    2019-07-22| PLFP| Fee payment|Year of fee payment: 5 |
    2019-12-27| GC| Lien (pledge) constituted|Effective date: 20191114 |
    2020-07-16| PLFP| Fee payment|Year of fee payment: 6 |
    2021-07-09| PLFP| Fee payment|Year of fee payment: 7 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1557481A|FR3039876B1|2015-08-03|2015-08-03|MIXING UNIT AND MIXER TAP COMPRISING SUCH A MIXING UNIT|
    FR1557481|2015-08-03|FR1557481A| FR3039876B1|2015-08-03|2015-08-03|MIXING UNIT AND MIXER TAP COMPRISING SUCH A MIXING UNIT|
    PCT/EP2016/068366| WO2017021386A1|2015-08-03|2016-08-02|Mixing unit and mixer tap including such a mixing unit|
    US15/750,321| US10590635B2|2015-08-03|2016-08-02|Mixing unit and mixer tap including such a mixing unit|
    DE112016003514.4T| DE112016003514T5|2015-08-03|2016-08-02|Mixing unit and mixer tap comprising such a mixing unit|
    CN201680045321.0A| CN107924202B|2015-08-03|2016-08-02|Mixing unit and mixing faucet comprising such a mixing unit|
    GB1801341.7A| GB2557071B|2015-08-03|2016-08-02|Mixing unit and mixer tap including such a mixing unit|
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