초록 ▼

According to the invention, the cartridge (1) includes a thermostatic element (72) which is thermally activated by a mixture of a cold fluid and a hot fluid, which is mechanically connected to a regulator slide (70) and which is moved by a single lever (50) for controlling the flow rate and the temp

According to the invention, the cartridge (1) includes a thermostatic element (72) which is thermally activated by a mixture of a cold fluid and a hot fluid, which is mechanically connected to a regulator slide (70) and which is moved by a single lever (50) for controlling the flow rate and the temperature of said mixture. In order to improve cartridge temperature regulation within a large flow range, the cartridge includes second (30) and third discs (40) in addition to a first disc which is stationary relative to the cartridge body (10). The second disc is translationally stationary relative to the first disc and is capable of rotation under the action of the lever actuation via a nut partially containing a thermostatic-member-moving assembly (76, 78, 80) which is rotatably connected to the control lever about the axis (X-X) and which is provided with extensions (66) that engage mechanically with the second disc for rotating same. The third disc is rotatably connected to the second disc and is capable of translation under the action of the lever actuation. The third disc defines: (a) a cold fluid passage (41A) designed to establish a communication between an inlet (21A) and a return line (22A) for cold fluid, formed through the first disc via an inlet (31A) and a return line (32A) for cold fluid extending through the second disc in order to enable a high flow rate; and (b) a hot fluid passage (41B) designed to establish a communication between an inlet (21B) and a return line (22B) for hot fluid, formed through the first disc via a hot fluid inlet (31b) and a return line (32B) also extending through the second disc in order to enable a high flow rate.

대표청구항 ▼

1. A single-control thermostatic cartridge, comprising: a body which delimits internally a chamber for mixing a cold fluid and a hot fluid,a first disk which is stationary relative to the body and which delimits through it at least one cold fluid inlet, at least one cold fluid exhaust, at least one

1. A single-control thermostatic cartridge, comprising: a body which delimits internally a chamber for mixing a cold fluid and a hot fluid,a first disk which is stationary relative to the body and which delimits through it at least one cold fluid inlet, at least one cold fluid exhaust, at least one hot fluid inlet and at least one hot fluid exhaust,fluid communication means which can move relative to the first disk and are adapted so as to bring the cold fluid inlet into communication with the cold fluid exhaust of the first disk and as to bring the hot fluid inlet into communication with the hot fluid exhaust of the first disk,a regulator slide which is arranged in the chamber, downstream of the cold fluid and hot fluid exhausts of the first disk,a thermostatic element which is at least partially arranged in the chamber and which is mechanically connected to the regulator slide, anda single control lever for controlling the flow rate and temperature of the mixture of the cold and hot fluids, which is adapted so as to drive the fluid communication means in displacement relative to the first disk and as to displace the thermostatic element inside the chamber,wherein the fluid communication means comprise:a second disk which, relative to the first disk, is both stationary in translational movement radially to a central axis of the body and able to be displaced in rotation about the central axis under the driving action of the control lever via a nut in which an assembly for displacing the thermostatic element is partially accommodated, said assembly being linked to the control lever in rotation about the central axis and provided with extensions mechanically engaging with the second disk in order to drive the latter in rotation, anda third disk which, relative to the second disk, is both linked in rotation about the central axis and able to be displaced in translation radially to the central axis under the driving action of the control lever and which delimits both a cold fluid passage adapted so as to bring the cold fluid inlet of the first disk into communication with the cold fluid exhaust of the first disk via at least one cold fluid inlet and at least one cold fluid exhaust which are delimited through the second disk, and a hot fluid passage adapted so as to bring the hot fluid inlet of the first disk into communication with the hot fluid exhaust of the first disk via at least one hot fluid inlet and at least one hot fluid exhaust which are delimited through the second disk. 2. The cartridge as claimed in claim 1, wherein the control lever comprises at least one prong which is mounted so as to pivot on the nut and one end of which mechanically engages with the third disk so as to drive the latter in translation. 3. The cartridge as claimed in claim 2, wherein the nut comprises a body with a substantially tubular shape which is centered on the central axis, to which said at least one prong of the control lever is assembled, and from which said extensions extend, distributed over the outer periphery of this body. 4. The cartridge as claimed in claim 2, wherein, between the third disk and the nut, a bearing is placed which has a face fixedly secured to the third disk, whilst its opposite face is in sliding contact against the nut, the end of said at least one prong of the control lever traversing this bearing from one side to the other, in a substantially complementary fashion. 5. The cartridge as claimed in claim 1, wherein the assembly for displacing the thermostatic element comprises a threaded bush which is linked in rotation relative to the body, is screwed inside the nut, and against which the thermostatic element or a rigid extension thereof bears. 6. The cartridge as claimed in claim 5, wherein an overtravel spring is interposed between the threaded bush and the thermostatic element or a rigid extension thereof. 7. The cartridge as claimed in claim 5, wherein the threaded bush is linked in rotation relative to the body via the first disk. 8. The cartridge as claimed in claim 5, wherein the thermostatic element or the rigid extension thereof is centered on the central axis and traverses, from one side to the other, the first disk via a substantially complementary orifice delimited through this first disk, the second disk via a substantially complementary orifice delimited through this second disk, and the third disk via an oblong orifice delimited through this third disk, this oblong orifice having, in a section transverse to the central axis, a smallest dimension which is matched to the corresponding dimension of the thermostatic element or of the rigid extension thereof, whilst its largest dimension is oriented in the direction of translational movement of the third disk. 9. The cartridge as claimed in claim 1, wherein the body, the first disk and the second disk have substantially the same external diameter which is substantially equal to the internal diameter of an accommodating casing. 10. The cartridge as claimed in claim 9, wherein said same external diameter is approximately 40 mm. 11. The cartridge as claimed in claim 1, wherein +the cold fluid inlet and hot water inlet of the second disk substantially have, in a section transverse to the central axis, the shape of an isosceles triangle with its main vertex pointing away from the central axis. 12. A mixer faucet having a single-control thermostatic cartridge as claimed in claim 1.